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Larsen TG, Samaniego Castruita JA, Worning P, Westh H, Bartels MD. Within-host genomic evolution of methicillin-resistant Staphylococcus aureus in long-term carriers. Appl Microbiol Biotechnol 2024; 108:95. [PMID: 38212970 PMCID: PMC10784349 DOI: 10.1007/s00253-023-12932-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 01/13/2024]
Abstract
Assessing the genomic evolution of Staphylococcus aureus can help us understand how the bacteria adapt to its environment. In this study, we aimed to assess the mutation rate within 144 methicillin-resistant Staphylococcus aureus (MRSA) carriers with a carriage time from 4 to 11 years, including some carriers who belonged to the same households. We found that 23 of the 144 individuals had completely different MRSA types over time and were therefore not long-term carriers of the same MRSA. From the remaining 121 individuals, we performed whole-genome sequencing (WGS) on 424 isolates and then compared these pairwise using core genome multilocus sequence typing (cgMLST) and single-nucleotide polymorphism (SNP) analyses. We found a median within-host mutation rate in long-term MRSA carriers of 4.9 (3.4-6.9) SNPs/genome/year and 2.7 (1.8-4.2) allelic differences/genome/year, when excluding presumed recombination. Furthermore, we stratified the cohort into subgroups and found no significant difference between the median mutation rate of members of households, individuals with presumed continued exposure, e.g., from travel and persons without known continued exposure. Finally, we found that SNPs occurred at random within the genes in our cohort. KEY POINTS: • Median mutation rate within long-term MRSA carriers of 4.9 (3.4-6.9) SNPs/genome/year • Similar median mutation rates in subgroups (households, travelers) • No hotspots for SNPs within the genome.
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Affiliation(s)
- Tine Graakjær Larsen
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
- Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark
| | | | - Peder Worning
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
| | - Henrik Westh
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Mette Damkjær Bartels
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark.
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
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Khatam-Lashgari A, Harving ML, Villa C, Lynnerup N, Larsen ST. Forensic age estimation of the knee by post-mortem DR, CT, and MR imaging: a comparative study. Int J Legal Med 2024; 138:971-981. [PMID: 38240840 PMCID: PMC11004047 DOI: 10.1007/s00414-024-03158-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 01/08/2024] [Indexed: 04/11/2024]
Abstract
It is believed by many that reference data for age estimation purposes must be imaging-modality specific. A study from our department has however proven otherwise. We therefore found it interesting to investigate this further by looking at the level of agreement between different imaging modalities. The aim of this study was to investigate the level of agreement between the three radiological modalities, computed tomography (CT), magnetic resonance imaging (MRI), and digital radiography (DR), in assessing the ossification of the epiphyses of the knee. A total of 34 deceased individuals of 10-25 years of age, brought in for a medicolegal autopsy at our department, were scanned by CT, MRI, and DR. The ossification stages of the three bones of the right knee, distal femoral, proximal tibial, and proximal fibular epiphysis were assessed using the established combined staging method by Schmeling et al. and Kellinghaus et al. Analysis of the results by Cohen's weighted kappa showed a good agreement between CT and DR (K = 0.61-0.70), and MRI and DR (K = 0.68-0.79) but only moderate agreement between CT and MRI (K = 0.55-0.57). This leads us to conclude that different radiological images cannot be used interchangeably for age estimation purposes, so reference material needs to be imaging-modality specific. However, to make a more general conclusion research on a larger population is needed.
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Affiliation(s)
- Apameh Khatam-Lashgari
- Department of Forensic Medicine, Section of Forensic Pathology, University of Copenhagen, Copenhagen, Denmark.
| | | | - Chiara Villa
- Department of Forensic Medicine, Section of Forensic Pathology, University of Copenhagen, Copenhagen, Denmark
| | - Niels Lynnerup
- Department of Forensic Medicine, Section of Forensic Pathology, University of Copenhagen, Copenhagen, Denmark
| | - Sara Tangmose Larsen
- Department of Forensic Medicine, Section of Forensic Pathology, University of Copenhagen, Copenhagen, Denmark
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Krommes K, Thorborg K, Clausen MB, Rathleff MS, Olesen JL, Kallemose T, Hölmich P. Self-management including exercise, education and activity modification compared to usual care for adolescents with Osgood-Schlatter (the SOGOOD trial): protocol of a randomized controlled superiority trial. BMC Sports Sci Med Rehabil 2024; 16:89. [PMID: 38643184 PMCID: PMC11032598 DOI: 10.1186/s13102-024-00870-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 03/25/2024] [Indexed: 04/22/2024]
Abstract
BACKGROUND Osgood-Schlatter is the most frequent growth-related injury affecting about 10% of physically active adolescents. It can cause long-term pain and limitations in sports and physical activity, with potential sequela well into adulthood. The management of Osgood-Schlatter is very heterogeneous. Recent systematic reviews have found low level evidence for surgical intervention and injection therapies, and an absence of studies on conservative management. Recently, a novel self-management approach with exercise, education, and activity modification, demonstrated favorable outcomes for adolescents with patellofemoral pain and Osgood-Schlatter in prospective cohort studies. AIM The aim of this trial is to assess the effectiveness of the novel self-management approach compared to usual care in improving self-reported knee-related function in sport (measured using the KOOS-child 'Sport/play' subscale) after a 5-month period. METHODS This trial is a pragmatic, assessor-blinded, randomized controlled trial with a two-group parallel arm design, including participants aged 10-16 years diagnosed with Osgood-Schlatter. Participants will receive 3 months of treatment, consisting of either usual care or the self-management approach including exercise, education, and activity modification, followed by 2 months of self-management. Primary endpoint is the KOOS-child 'Sport/play' score at 5 months. This protocol details the planned methods and procedures. DISCUSSION The novel approach has already shown promise in previous cohort studies. This trial will potentially provide much-needed level 1 evidence for the effectiveness of the self-management approach, representing a crucial step towards addressing the long-term pain and limitations associated with Osgood-Schlatter. TRIAL REGISTRATION Clinicaltrials.gov: NCT05174182. Prospectively registered December 30th 2021. Date of first recruitment: January 3rd 2022. Target sample size: 130 participants.
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Affiliation(s)
- Kasper Krommes
- Sports Orthopedic Research Center - Copenhagen (SORC-C), Department of Orthopedic Surgery, Amager-Hvidovre, Copenhagen University Hospital, Kettegaard Allé 30, Hvidovre, DK-2650, Denmark.
| | - Kristian Thorborg
- Sports Orthopedic Research Center - Copenhagen (SORC-C), Department of Orthopedic Surgery, Amager-Hvidovre, Copenhagen University Hospital, Kettegaard Allé 30, Hvidovre, DK-2650, Denmark
- Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3B, DK-2200, Copenhagen N, Denmark
| | - Mikkel Bek Clausen
- Department of Midwifery, Physiotherapy, Occupational Therapy and Psychomotor Therapy, Faculty of Health, University College Copenhagen, Sigurdsgade 26, DK-2200, Copenhagen N, Denmark
| | - Michael Skovdal Rathleff
- Center for General Practice at Aalborg University, Aalborg. Fyrkildevej 7, DK-9220, Aalborg, Denmark
- Department of Health Science and Technology, Aalborg University, Selma Lagerløfs Vej 249, DK-9220, Aalborg, Denmark
| | - Jens Lykkegaard Olesen
- Center for General Practice at Aalborg University, Aalborg. Fyrkildevej 7, DK-9220, Aalborg, Denmark
| | - Thomas Kallemose
- Department of Midwifery, Physiotherapy, Occupational Therapy and Psychomotor Therapy, Faculty of Health, University College Copenhagen, Sigurdsgade 26, DK-2200, Copenhagen N, Denmark
- Department of Clinical Research, Amager-Hvidovre, Copenhagen University Hospital, Kettegaard Alle 30, Hvidovre, DK-2610, Danmark
| | - Per Hölmich
- Sports Orthopedic Research Center - Copenhagen (SORC-C), Department of Orthopedic Surgery, Amager-Hvidovre, Copenhagen University Hospital, Kettegaard Allé 30, Hvidovre, DK-2650, Denmark
- Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3B, DK-2200, Copenhagen N, Denmark
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Gregersen R, Villumsen M, Mottlau KH, Maule CF, Nygaard H, Rasmussen JH, Christensen MB, Petersen J. Acute patients discharged without an established diagnosis: risk of mortality and readmission of nonspecific diagnoses compared to disease-specific diagnoses. Scand J Trauma Resusc Emerg Med 2024; 32:32. [PMID: 38641643 PMCID: PMC11027222 DOI: 10.1186/s13049-024-01191-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 02/27/2024] [Indexed: 04/21/2024] Open
Abstract
BACKGROUND Nonspecific discharge diagnoses after acute hospital courses represent patients discharged without an established cause of their complaints. These patients should have a low risk of adverse outcomes as serious conditions should have been ruled out. We aimed to investigate the mortality and readmissions following nonspecific discharge diagnoses compared to disease-specific diagnoses and assessed different nonspecific subgroups. METHODS Register-based cohort study including hospital courses beginning in emergency departments across 3 regions of Denmark during March 2019-February 2020. We identified nonspecific diagnoses from the R- and Z03-chapter in the ICD-10 classification and excluded injuries, among others-remaining diagnoses were considered disease-specific. Outcomes were 30-day mortality and readmission, the groups were compared by Cox regression hazard ratios (HR), unadjusted and adjusted for socioeconomics, comorbidity, administrative information and laboratory results. We stratified into short (3-<12 h) or lengthier (12-168 h) hospital courses. RESULTS We included 192,185 hospital courses where nonspecific discharge diagnoses accounted for 50.7% of short and 25.9% of lengthier discharges. The cumulative risk of mortality for nonspecific vs. disease-specific discharge diagnoses was 0.6% (0.6-0.7%) vs. 0.8% (0.7-0.9%) after short and 1.6% (1.5-1.7%) vs. 2.6% (2.5-2.7%) after lengthier courses with adjusted HRs of 0.97 (0.83-1.13) and 0.94 (0.85-1.05), respectively. The cumulative risk of readmission for nonspecific vs. disease-specific discharge diagnoses was 7.3% (7.1-7.5%) vs. 8.4% (8.2-8.6%) after short and 11.1% (10.8-11.5%) vs. 13.7% (13.4-13.9%) after lengthier courses with adjusted HRs of 0.94 (0.90-0.98) and 0.95 (0.91-0.99), respectively. We identified 50 clinical subgroups of nonspecific diagnoses, of which Abdominal pain (n = 12,462; 17.1%) and Chest pain (n = 9,599; 13.1%) were the most frequent. The subgroups described differences in characteristics with mean age 41.9 to 80.8 years and mean length of stay 7.1 to 59.5 h, and outcomes with < 0.2-8.1% risk of 30-day mortality and 3.5-22.6% risk of 30-day readmission. CONCLUSIONS In unadjusted analyses, nonspecific diagnoses had a lower risk of mortality and readmission than disease-specific diagnoses but had a similar risk after adjustments. We identified 509 clinical subgroups of nonspecific diagnoses with vastly different characteristics and prognosis.
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Affiliation(s)
- Rasmus Gregersen
- Department of Emergency Medicine, Copenhagen University Hospital- Bispebjerg and Frederiksberg, Copenhagen, Denmark.
- Center for Clinical Research and Prevention, Copenhagen University Hospital- Bispebjerg and Frederiksberg, Copenhagen, Denmark.
- Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Marie Villumsen
- Center for Clinical Research and Prevention, Copenhagen University Hospital- Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Katarina Høgh Mottlau
- Department of Emergency Medicine, Copenhagen University Hospital- Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Cathrine Fox Maule
- Center for Clinical Research and Prevention, Copenhagen University Hospital- Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Hanne Nygaard
- Department of Emergency Medicine, Copenhagen University Hospital- Bispebjerg and Frederiksberg, Copenhagen, Denmark
- Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jens Henning Rasmussen
- Department of Emergency Medicine, Copenhagen University Hospital- Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Mikkel Bring Christensen
- Copenhagen Center for Translational Research, Copenhagen University Hospital- Bispebjerg and Frederiksberg, Copenhagen, Denmark
- Department of Clinical Pharmacology, Copenhagen University Hospital- Bispebjerg and Frederiksberg, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Janne Petersen
- Center for Clinical Research and Prevention, Copenhagen University Hospital- Bispebjerg and Frederiksberg, Copenhagen, Denmark
- Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Sica P, Domingues MA, Mota LA, Pinto AU, Baptista AAS, Horii J, Abdalla AL, Baptista AS. How does active yeast supplementation reduce the deleterious effects of aflatoxins in Wistar rats? A radiolabeled assay and histopathological study. World J Microbiol Biotechnol 2024; 40:164. [PMID: 38630373 PMCID: PMC11023971 DOI: 10.1007/s11274-024-03981-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 04/03/2024] [Indexed: 04/19/2024]
Abstract
The aim of this study was to investigate the mechanisms by which yeasts (Saccharomyces cerevisiae) control the toxic effects of aflatoxins, which are not yet fully understood. Radiolabeled aflatoxin B1 (AFB13H) was administered by gavage to Wistar rats fed with aflatoxin (AflDiet) and aflatoxin supplemented with active dehydrated yeast Y904 (AflDiet + Yeast). The distribution of AFB13H and its metabolites were analyzed at 24, 48 and 72 h by tracking back of the radioactivity. No significant differences were observed between the AflDiet and AflDiet + Yeast groups in terms of the distribution of labeled aflatoxin. At 72 h, for the AflDiet group the radiolabeled aflatoxin was distributed as following: feces (79.5%), carcass (10.5%), urine (1.7%), and intestine (7.4%); in the AflDiet + Yeast the following distribution was observed: feces (76%), carcass (15%), urine (2.9%), and intestine (4.9%). These values were below 1% in other organs. These findings indicate that even after 72 h considerable amounts of aflatoxins remains in the intestines, which may play a significant role in the distribution and metabolism of aflatoxins and its metabolites over time. The presence of yeast may not significantly affect this process. Furthermore, histopathological examination of hepatic tissues showed that the presence of active yeast reduced the severity of liver damage caused by aflatoxins, indicating that yeasts control aflatoxin damage through biochemical mechanisms. These findings contribute to a better understanding of the mechanisms underlying the protective effects of yeasts against aflatoxin toxicity.
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Affiliation(s)
- Pietro Sica
- Department of Plant and Environmental Sciences, University of Copenhagen, 40 Thorvaldsenvej, Frederiksberg, 1870, Denmark.
| | - Maria Antonia Domingues
- Department of Agri-food Industry, Food and Nutrition, College of Agriculture "Luiz de Queiroz", University of Sao Paulo", Padua Dias Avenue, Piracicaba, Sao Paulo, 13418-900, Brazil
| | - Layna Amorim Mota
- Department of Agri-food Industry, Food and Nutrition, College of Agriculture "Luiz de Queiroz", University of Sao Paulo", Padua Dias Avenue, Piracicaba, Sao Paulo, 13418-900, Brazil
| | - Alana Uchôa Pinto
- Department of Agri-food Industry, Food and Nutrition, College of Agriculture "Luiz de Queiroz", University of Sao Paulo", Padua Dias Avenue, Piracicaba, Sao Paulo, 13418-900, Brazil
| | | | - Jorge Horii
- Department of Agri-food Industry, Food and Nutrition, College of Agriculture "Luiz de Queiroz", University of Sao Paulo", Padua Dias Avenue, Piracicaba, Sao Paulo, 13418-900, Brazil
| | - Adibe Luiz Abdalla
- Center for Nuclear Energy in Agriculture (CENA), University of Sao Paulo, 303, Centenario Avenue, Piracicaba, Sao Paulo, 13400-970, Brazil
| | - Antonio Sampaio Baptista
- Department of Agri-food Industry, Food and Nutrition, College of Agriculture "Luiz de Queiroz", University of Sao Paulo", Padua Dias Avenue, Piracicaba, Sao Paulo, 13418-900, Brazil
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Al-Khazali HM, Christensen RH, Chaudhry BA, Melchior AG, Ashina M, Burstein R, Ashina H. Effects of PDE-3 inhibition in persistent post-traumatic headache: evidence of cAMP-dependent signaling. J Headache Pain 2024; 25:56. [PMID: 38627631 PMCID: PMC11022386 DOI: 10.1186/s10194-024-01762-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 04/01/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Phosphodiesterase 3 (PDE-3) inhibition have been implicated in the neurobiologic underpinnings of migraine. Considering the clinical similarities between migraine and persistent post-traumatic headache (PPTH), we aimed to ascertain whether PDE-3 inhibition can elicit migraine-like headache in persons with PPTH. METHODS We tested cilostazol, which inhibits PDE-3, in a randomized, double-blind, placebo-controlled, two-way crossover study involving persons with PPTH attributed to mild traumatic brain injury. The randomized participants were allocated to receive oral administration of either 200-mg cilostazol or placebo (calcium tablet) on two separate experiment days. The primary end point was the incidence of migraine-like headache during a 12-hour observation window post-ingestion. The secondary endpoint was the area under the curve (AUC) for reported headache intensity scores during the same observation window. RESULTS Twenty-one persons underwent randomization and completed both experiment days. The mean participants' age was 41.4 years, and most (n = 17) were females. During the 12-hour observation window, 14 (67%) of 21 participants developed migraine-like headache post-cilostazol, in contrast to three (14%) participants after placebo (P =.003). The headache intensity scores were higher post-cilostazol than after placebo (P <.001). CONCLUSIONS Our results provide novel evidence showing that PDE-3 inhibition can elicit migraine-like headache in persons with PPTH. Given that PDE-3 inhibition increases intracellular cAMP levels, our findings allude to the potential therapeutic value of targeting cAMP-dependent signaling pathways in the management of PPTH. Further investigations are imperative to substantiate these insights and delineate the importance of cAMP-dependent signaling pathways in the neurobiologic mechanisms underlying PPTH. CLINICALTRIALS GOV IDENTIFIER NCT05595993.
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Affiliation(s)
- Haidar M Al-Khazali
- Harvard Medical School, Boston, MA, USA
- Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA
- Department of Neurology, Danish Headache Center, Copenhagen University Hospital- Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Rune H Christensen
- Harvard Medical School, Boston, MA, USA
- Department of Neurology, Danish Headache Center, Copenhagen University Hospital- Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Basit Ali Chaudhry
- Department of Neurology, Danish Headache Center, Copenhagen University Hospital- Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anna G Melchior
- Department of Neurology, Danish Headache Center, Copenhagen University Hospital- Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Messoud Ashina
- Department of Neurology, Danish Headache Center, Copenhagen University Hospital- Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Rami Burstein
- Harvard Medical School, Boston, MA, USA
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Håkan Ashina
- Harvard Medical School, Boston, MA, USA.
- Department of Neurology, Danish Headache Center, Copenhagen University Hospital- Rigshospitalet, Copenhagen, Denmark.
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA.
- Valdemar Hansens, Vej 5, Entrance 1A, 2600, Glostrup, Denmark.
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Gersing S, Schulze TK, Cagiada M, Stein A, Roth FP, Lindorff-Larsen K, Hartmann-Petersen R. Characterizing glucokinase variant mechanisms using a multiplexed abundance assay. Genome Biol 2024; 25:98. [PMID: 38627865 PMCID: PMC11021015 DOI: 10.1186/s13059-024-03238-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 04/04/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Amino acid substitutions can perturb protein activity in multiple ways. Understanding their mechanistic basis may pinpoint how residues contribute to protein function. Here, we characterize the mechanisms underlying variant effects in human glucokinase (GCK) variants, building on our previous comprehensive study on GCK variant activity. RESULTS Using a yeast growth-based assay, we score the abundance of 95% of GCK missense and nonsense variants. When combining the abundance scores with our previously determined activity scores, we find that 43% of hypoactive variants also decrease cellular protein abundance. The low-abundance variants are enriched in the large domain, while residues in the small domain are tolerant to mutations with respect to abundance. Instead, many variants in the small domain perturb GCK conformational dynamics which are essential for appropriate activity. CONCLUSIONS In this study, we identify residues important for GCK metabolic stability and conformational dynamics. These residues could be targeted to modulate GCK activity, and thereby affect glucose homeostasis.
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Affiliation(s)
- Sarah Gersing
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, DK-2200, Copenhagen, Denmark.
| | - Thea K Schulze
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, DK-2200, Copenhagen, Denmark
| | - Matteo Cagiada
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, DK-2200, Copenhagen, Denmark
| | - Amelie Stein
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, DK-2200, Copenhagen, Denmark
| | - Frederick P Roth
- Donnelly Centre, University of Toronto, M5S 3E1, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, M5S 1A8, Toronto, ON, Canada
- Lunenfeld-Tanenbaum Research Institute, Sinai Health, M5G 1X5, Toronto, ON, Canada
- Department of Computational and Systems Biology, University of Pittsburgh School of Medicine, 15213, Pittsburgh, USA
| | - Kresten Lindorff-Larsen
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, DK-2200, Copenhagen, Denmark.
| | - Rasmus Hartmann-Petersen
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, DK-2200, Copenhagen, Denmark.
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Musaeus CS, Kjaer TW, Lindberg U, Vestergaard MB, Bo H, Larsson W, Press DZ, Andersen BB, Høgh P, Kidmose P, Hemmsen MC, Rank ML, Hasselbalch SG, Waldemar G, Frederiksen KS. Subclinical epileptiform discharges in Alzheimer's disease are associated with increased hippocampal blood flow. Alzheimers Res Ther 2024; 16:80. [PMID: 38610005 PMCID: PMC11010418 DOI: 10.1186/s13195-024-01432-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 03/19/2024] [Indexed: 04/14/2024]
Abstract
BACKGROUND In epilepsy, the ictal phase leads to cerebral hyperperfusion while hypoperfusion is present in the interictal phases. Patients with Alzheimer's disease (AD) have an increased prevalence of epileptiform discharges and a study using intracranial electrodes have shown that these are very frequent in the hippocampus. However, it is not known whether there is an association between hippocampal hyperexcitability and regional cerebral blood flow (rCBF). The objective of the study was to investigate the association between rCBF in hippocampus and epileptiform discharges as measured with ear-EEG in patients with Alzheimer's disease. Our hypothesis was that increased spike frequency may be associated with increased rCBF in hippocampus. METHODS A total of 24 patients with AD, and 15 HC were included in the analysis. Using linear regression, we investigated the association between rCBF as measured with arterial spin-labelling MRI (ASL-MRI) in the hippocampus and the number of spikes/sharp waves per 24 h as assessed by ear-EEG. RESULTS No significant difference in hippocampal rCBF was found between AD and HC (p-value = 0.367). A significant linear association between spike frequency and normalized rCBF in the hippocampus was found for patients with AD (estimate: 0.109, t-value = 4.03, p-value < 0.001). Changes in areas that typically show group differences (temporal-parietal cortex) were found in patients with AD, compared to HC. CONCLUSIONS Increased spike frequency was accompanied by a hemodynamic response of increased blood flow in the hippocampus in patients with AD. This phenomenon has also been shown in patients with epilepsy and supports the hypothesis of hyperexcitability in patients with AD. The lack of a significant difference in hippocampal rCBF may be due to an increased frequency of epileptiform discharges in patients with AD. TRIAL REGISTRATION The study is registered at clinicaltrials.gov (NCT04436341).
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Affiliation(s)
- Christian Sandøe Musaeus
- Danish Dementia Research Centre (DDRC), Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Inge Lehmanns vej 8, Copenhagen, 2100, Denmark.
| | - Troels Wesenberg Kjaer
- Danish Dementia Research Centre (DDRC), Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Inge Lehmanns vej 8, Copenhagen, 2100, Denmark
| | - Ulrich Lindberg
- Functional Imaging Unit, Department of Clinical Physiology and Nuclear Medicine, University of Copenhagen, Valdemar Hansens Vej 13, Glostrup, 2600, Denmark
| | - Mark B Vestergaard
- Functional Imaging Unit, Department of Clinical Physiology and Nuclear Medicine, University of Copenhagen, Valdemar Hansens Vej 13, Glostrup, 2600, Denmark
| | - Henrik Bo
- Danish Dementia Research Centre (DDRC), Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Inge Lehmanns vej 8, Copenhagen, 2100, Denmark
| | - Wiberg Larsson
- Functional Imaging Unit, Department of Clinical Physiology and Nuclear Medicine, University of Copenhagen, Valdemar Hansens Vej 13, Glostrup, 2600, Denmark
| | - Daniel Zvi Press
- Berenson-Allen Center for Non-invasive Brain Stimulation, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Ave, Boston, MA, 02215, USA
| | - Birgitte Bo Andersen
- Danish Dementia Research Centre (DDRC), Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Inge Lehmanns vej 8, Copenhagen, 2100, Denmark
| | - Peter Høgh
- Regional Dementia Research Centre, Department of Neurology, Zealand University Hospital, Vestermarksvej 11, Roskilde, 4000, Denmark
- Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3B, Copenhagen, 2200, Denmark
| | - Preben Kidmose
- Department of Electrical and Computer Engineering, Aarhus University, Finlandsgade 22, Aarhus N, 8200, Denmark
| | | | | | - Steen Gregers Hasselbalch
- Danish Dementia Research Centre (DDRC), Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Inge Lehmanns vej 8, Copenhagen, 2100, Denmark
- Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3B, Copenhagen, 2200, Denmark
| | - Gunhild Waldemar
- Danish Dementia Research Centre (DDRC), Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Inge Lehmanns vej 8, Copenhagen, 2100, Denmark
- Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3B, Copenhagen, 2200, Denmark
| | - Kristian Steen Frederiksen
- Danish Dementia Research Centre (DDRC), Department of Neurology, Copenhagen University Hospital - Rigshospitalet, Inge Lehmanns vej 8, Copenhagen, 2100, Denmark
- Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3B, Copenhagen, 2200, Denmark
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9
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Kvam JM, Nybo ML, Torz L, Sustarsic RK, Jensen KHR, Nielsen JE, Frederiksen H, Gadgaard S, Spiess K, Poulsen SS, Thomsen JS, Cowin P, Blomberg Jensen M, Kurita T, Rosenkilde MM. High incidence of imperforate vagina in ADGRA3-deficient mice. BMC Biol 2024; 22:77. [PMID: 38589878 PMCID: PMC11003089 DOI: 10.1186/s12915-024-01873-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 03/25/2024] [Indexed: 04/10/2024] Open
Abstract
BACKGROUND Ten percent of the female population suffers from congenital abnormalities of the vagina, uterus, or oviducts, with severe consequences for reproductive and psychological health. Yet, the underlying causes of most of these malformations remain largely unknown. ADGRA3 (GPR125) is involved in WNT signaling and planar cell polarity, mechanisms vital to female reproductive tract development. Although ADGRA3 is a well-established spermatogonial stem cell marker, its role within the female urogenital system remains unclear. RESULTS In this study, we found Adgra3 to be expressed throughout the murine female urogenital system, with higher expression pre-puberty than after sexual maturation. We generated a global Adgra3-/- mouse line and observed imperforate vagina in 44% of Adgra3-/- females, resulting in distension of the reproductive tract and infertility. Ovarian morphology, plasma estradiol, ovarian Cyp19a1, and vaginal estrogen receptor α (Esr1) expression were unaffected. However, compared to controls, a significantly lower bone mineral density was found in Adgra3-/- mice. Whereas vaginal opening in mice is an estrogen-dependent process, 17β-estradiol treatment failed to induce vaginal canalization in Adgra3-/- mice. Furthermore, a marked reduction in vaginal and ovarian progesterone receptor expression was observed concomitant with an upregulation of apoptotic regulators Bcl2, Bid, and Bmf in adult Adgra3-/- females with a closed vagina. CONCLUSIONS Our collective results shed new insights into the complex mechanisms by which the adhesion receptor ADGRA3 regulates distal vaginal tissue remodeling during vaginal canalization via altered sex hormone responsiveness and balance in apoptotic regulators. This highlights the potential of ADGRA3 as a target in diagnostic screening and/or therapy for obstructive vaginal malformations in humans.
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Affiliation(s)
- Jone Marita Kvam
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Maja Lind Nybo
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lola Torz
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Riia Karolina Sustarsic
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Kristian Høj Reveles Jensen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - John Erik Nielsen
- Department of Growth and Reproduction and International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Hanne Frederiksen
- Department of Growth and Reproduction and International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Sarina Gadgaard
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Bainan Biotech, Copenhagen, Denmark
| | - Katja Spiess
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Steen Seier Poulsen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Pamela Cowin
- Departments of Cell Biology and Dermatology, New York University School of Medicine, New York, NY, USA
| | - Martin Blomberg Jensen
- Group of Skeletal, Mineral and Gonadal Endocrinology, Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Division of Translational Endocrinology, Department of Endocrinology and Internal Medicine, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark
| | - Takeshi Kurita
- Department of Cancer Biology and Genetics, Ohio State University, Columbus, OH, USA
| | - Mette Marie Rosenkilde
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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10
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Grønbæk-Thygesen M, Hartmann-Petersen R. Cellular and molecular mechanisms of aspartoacylase and its role in Canavan disease. Cell Biosci 2024; 14:45. [PMID: 38582917 PMCID: PMC10998430 DOI: 10.1186/s13578-024-01224-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 03/24/2024] [Indexed: 04/08/2024] Open
Abstract
Canavan disease is an autosomal recessive and lethal neurological disorder, characterized by the spongy degeneration of the white matter in the brain. The disease is caused by a deficiency of the cytosolic aspartoacylase (ASPA) enzyme, which catalyzes the hydrolysis of N-acetyl-aspartate (NAA), an abundant brain metabolite, into aspartate and acetate. On the physiological level, the mechanism of pathogenicity remains somewhat obscure, with multiple, not mutually exclusive, suggested hypotheses. At the molecular level, recent studies have shown that most disease linked ASPA gene variants lead to a structural destabilization and subsequent proteasomal degradation of the ASPA protein variants, and accordingly Canavan disease should in general be considered a protein misfolding disorder. Here, we comprehensively summarize the molecular and cell biology of ASPA, with a particular focus on disease-linked gene variants and the pathophysiology of Canavan disease. We highlight the importance of high-throughput technologies and computational prediction tools for making genotype-phenotype predictions as we await the results of ongoing trials with gene therapy for Canavan disease.
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Affiliation(s)
- Martin Grønbæk-Thygesen
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, 2200N, Copenhagen, Denmark.
| | - Rasmus Hartmann-Petersen
- The Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, 2200N, Copenhagen, Denmark.
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11
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Nørregaard LB, Wickham KA, Jeppesen JS, Rytter N, Christoffersen LC, Gliemann L, Lawrence M, Evans PA, Kruuse C, Hellsten Y. Exercise transiently increases the density of incipient blood clots in antiplatelet-treated lacunar stroke patients. Thromb J 2024; 22:35. [PMID: 38581046 PMCID: PMC10996168 DOI: 10.1186/s12959-024-00604-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 03/25/2024] [Indexed: 04/07/2024] Open
Abstract
INTRODUCTION Older individuals and, in particular, individuals at risk of recurrent stroke, may be susceptible to thrombosis when participating in exercise, however, this aspect has not been well investigated. METHODS Clot microstructure and conventional markers of thrombotic risk were determined in twenty lacunar stroke patients and fifteen healthy age-matched controls before, immediately after and 1 h after a bout of moderate intensity cycling exercise. Data were analyzed using a linear mixed model approach. RESULTS At rest, clot microstructure (1.69 ± 0.07 vs. 1.64 ± 0.05, corresponding to a difference of ~ 50% in normalized clot mass; p = 0.009) and thrombocyte count (73%; p < 0.0001) were higher, and activated partial thromboplastin time was lower (18%; p = 0.0001) in stroke patients compared to age-matched controls. Acute exercise increased thrombogenic markers similarly in the two groups: incipient clot microstructure (1.69 ± 0.07 vs. 1.74 ± 0.05; p = 0.0004 and 1.64 ± 0.05 vs. 1.71 ± 0.04; p < 0.0001, for stroke and controls respectively), plasma fibrinogen (12%; p < 0.0001 and 18%; p < 0.0001, for stroke and controls respectively) and the combined coagulation factors II, VII and X (p = 0.0001 and p < 0.0001, for stroke and controls respectively). CONCLUSION The results show that exercise transiently increases the risk of blood clot formation in both stroke patients and controls, however, due to the higher baseline thrombogenicity in stroke patients, the post exercise risk of forming blood clots may be higher in this group. TRIAL REGISTRATION Registered at ClinicalTrials.gov (NCT03635177).
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Affiliation(s)
- L B Nørregaard
- The Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - K A Wickham
- The Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
- Environmental Ergonomics Lab, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON, Canada
| | - J S Jeppesen
- The Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - N Rytter
- The Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - L C Christoffersen
- The Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - L Gliemann
- The Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - M Lawrence
- Welsh Centre for Emergency Medicine Research, Morriston Hospital, Swansea Bay University Health Board, Swansea, UK
| | - P A Evans
- Welsh Centre for Emergency Medicine Research, Morriston Hospital, Swansea Bay University Health Board, Swansea, UK
- Swansea University Medical School, Swansea, UK
| | - C Kruuse
- Neurovascular Research Unit, Department of Neurology, Herlev Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Y Hellsten
- The Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark.
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12
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Buchmann K, Kania PW. Transversotrema hafniensis n. sp. infection in Poecilia reticulata by cercariae released from Melanoides tuberculata in Denmark. Acta Vet Scand 2024; 66:15. [PMID: 38566122 PMCID: PMC10988963 DOI: 10.1186/s13028-024-00736-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 03/22/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Exotic and ornamental fish are highly popular companion animals resulting in a significant transcontinental trade of fish, invertebrates and aquatic plants. A major issue is the diseases associated with these organisms, as they have a major impact on health of the fish in both public and private household aquaria. A secondary issue is the trade with these products, which potentially may expand the distribution area and spread a range of diseases to new habitats. RESULTS We here describe how Poecilia reticulata (guppy), produced in a private household aquarium, were invaded by cercariae of an exotic trematode released by imported Melanoides tuberculata snails. The fish presented with severe clinical signs (tremor, flashing, scraping of body against objects). A standard parasitological examination and morphometric identification showed scale pocket infections with a digenean trematode species within the genus Transversotrema. Molecular identification by PCR, sequencing and phylogenetic analyses of a 2646 bp sequence encoding ribosomal RNA (partial 18 S, ITS1, 5.8 S, ITS2, partial 28 S) was performed. The 1107 bp sequence of mitochondrial DNA (cox1) showed that the parasite differed from previously described Transversotrema species in M. tuberculata. Morphometrics of adult and larval specimens of this isolate also differed from previously described freshwater species within the genus. The new species was described and is named after Copenhagen, for its geographic origin. CONCLUSIONS The genus Transversotrema comprises a range of species, adapted to a microhabitat in scalepockets of teleosts. A combination of morphological and molecular characterization techniques has been shown to provide a good differentiation between species. The fish were not purchased from a pet shop but produced in the home aquarium. This indicated that an infection pressure existed in the aquarium, where the source of infection was found to be exotic intermediate host snails M. tuberculata, which originally were imported and purchased from a pet shop. The potential spread of fish diseases associated with trade of fish and snails to new geographic regions, where climate conditions are favourable, is discussed.
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Affiliation(s)
- Kurt Buchmann
- Department of Veterinary and Animal Sciences, Section of Parasitology and Aquatic Pathobiology, Faculty of Health and Medical Sciences, Stigbøjlen 7, DK-1870, Frederiksberg C, Denmark.
| | - Per Walter Kania
- Department of Veterinary and Animal Sciences, Section of Parasitology and Aquatic Pathobiology, Faculty of Health and Medical Sciences, Stigbøjlen 7, DK-1870, Frederiksberg C, Denmark
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13
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Huang L, Kehlet H, Petersen RH. Readmission after enhanced recovery video-assisted thoracoscopic surgery wedge resection. Surg Endosc 2024; 38:1976-1985. [PMID: 38379006 PMCID: PMC10978727 DOI: 10.1007/s00464-024-10700-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 01/14/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND Despite the implementation of Enhanced Recovery After Surgery (ERAS) programs, surgical stress continues to influence postoperative rehabilitation, including the period after discharge. However, there is a lack of data available beyond the point of discharge following video-assisted thoracoscopic surgery (VATS) wedge resection. Therefore, the objective of this study is to investigate incidence and risk factors for readmissions after ERAS VATS wedge resection. METHODS A retrospective analysis was performed on data from prospectively collected consecutive VATS wedge resections from June 2019 to June 2022. We evaluated main reasons related to wedge resection leading to 90-day readmission, early (occurring within 0-30 days postoperatively) and late readmission (occurring within 31-90 days postoperatively). To identify predictors for these readmissions, we utilized a logistic regression model for both univariable and multivariable analyses. RESULTS A total of 850 patients (non-small cell lung cancer 21.5%, metastasis 44.7%, benign 31.9%, and other lung cancers 1.9%) were included for the final analysis. Median length of stay was 1 day (IQR 1-2). During the postoperative 90 days, 86 patients (10.1%) were readmitted mostly due to pneumonia and pneumothorax. Among the cohort, 66 patients (7.8%) had early readmissions primarily due to pneumothorax and pneumonia, while 27 patients (3.2%) experienced late readmissions mainly due to pneumonia, with 7 (0.8%) patients experiencing both early and late readmissions. Multivariable analysis demonstrated that male gender, pulmonary complications, and neurological complications were associated with readmission. CONCLUSIONS Readmission after VATS wedge resection remains significant despite an optimal ERAS program, with pneumonia and pneumothorax as the dominant reasons. Early readmission was primarily associated with pneumothorax and pneumonia, while late readmission correlated mainly with pneumonia.
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Affiliation(s)
- Lin Huang
- Department of Cardiothoracic Surgery, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Henrik Kehlet
- Section for Surgical Pathophysiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - René Horsleben Petersen
- Department of Cardiothoracic Surgery, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.
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14
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Jensen LR, Possfelt-Møller E, Nielsen AE, Singh UM, Svendsen LB, Penninga L. Accuracy of FAST in detecting intraabdominal bleeding in major trauma with pelvic and/or acetabular fractures: a retrospective cohort study. Eur J Orthop Surg Traumatol 2024; 34:1479-1486. [PMID: 38253932 PMCID: PMC10980602 DOI: 10.1007/s00590-023-03813-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 12/15/2023] [Indexed: 01/24/2024]
Abstract
PURPOSE The Focused Assessment with Sonography for Trauma (FAST) is a tool to rapidly detect intraabdominal and intrapericardial fluid with point-of-care ultrasound. Previous studies have questioned the role of FAST in patients with pelvic fractures. The aim of the present study was to assess the accuracy of FAST to detect clinically significant intraabdominal hemorrhage in patients with pelvic fractures. METHODS We included all consecutive patients with pelvic and/or acetabular fractures treated our Level 1 trauma center from 2009-2020. We registered patient and fracture characteristics, FAST investigations and CT descriptions, explorative laparotomy findings, and transfusion needs. We compared FAST to CT and laparotomy findings, and calculated true positive and negative findings, sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV). RESULTS We included 389 patients. FAST had a sensitivity of 75%, a specificity of 98%, a PPV of 84%, and a NPV of 96% for clinically significant intraabdominal bleeding. Patients with retroperitoneal hematomas were at increased risk for laparotomy both because of True-negative FAST and False-positive FAST. CONCLUSION FAST is accurate to identify clinically significant intraabdominal blood in patients with severe pelvic fractures and should be a standard asset in these patients. Retroperitoneal hematomas challenge the FAST interpretation and thus the decision making when applying FAST in patients with pelvic fractures.
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Affiliation(s)
- Lasse Rehné Jensen
- Department of Surgery and Transplantation, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Emma Possfelt-Møller
- Department of Surgery and Transplantation, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Allan Evald Nielsen
- Department of Orthopaedic Surgery, Trauma Section, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Upender Martin Singh
- Department of Orthopaedic Surgery, Trauma Section, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Lars Bo Svendsen
- Department of Surgery and Transplantation, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Luit Penninga
- Department of Surgery and Transplantation, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
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15
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Zetner D, Rasmussen IR, Frykman CP, Jensen LR, Jensen RJ, Possfelt-Møller E, Taudorf M, Penninga L. Risk factors for rebleeding and mortality following prophylactic transarterial embolization for patients with high-risk peptic ulcer bleeding: a single-center retrospective cohort study. Surg Endosc 2024; 38:2010-2018. [PMID: 38413471 PMCID: PMC10978705 DOI: 10.1007/s00464-024-10709-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 01/21/2024] [Indexed: 02/29/2024]
Abstract
BACKGROUND To investigate factors associated with risk for rebleeding and 30-day mortality following prophylactic transarterial embolization in patients with high-risk peptic ulcer bleeding. METHODS We retrospectively reviewed medical records and included all patients who had undergone prophylactic embolization of the gastroduodenal artery at Rigshospitalet, Denmark, following an endoscopy-verified and treated peptic Sulcer bleeding, from 2016 to 2021. Data were collected from electronic health records and imaging from the embolization procedures. Primary outcomes were rebleeding and 30-day mortality. We performed logistical regression analyses for both outcomes with possible risk factors. Risk factors included: active bleeding; visible hemoclips; Rockall-score; anatomical variants; standardized embolization procedure; and number of endoscopies prior to embolization. RESULTS We included 176 patients. Rebleeding occurred in 25% following embolization and 30-day mortality was 15%. Not undergoing a standardized embolization procedure increased the odds of both rebleeding (odds ratio 3.029, 95% confidence interval (CI) 1.395-6.579) and 30-day overall mortality by 3.262 (1.252-8.497). More than one endoscopy was associated with increased odds of rebleeding (odds ratio 2.369, 95% CI 1.088-5.158). High Rockall-score increased the odds of 30-day mortality (odds ratio 2.587, 95% CI 1.243-5.386). Active bleeding, visible hemoclips, and anatomical variants did not affect risk of rebleeding or 30-day mortality. Reasons for deviation from standard embolization procedure were anatomical variations, targeted treatment without embolizing the gastroduodenal artery, and technical failure. CONCLUSIONS Deviation from the standard embolization procedure increased the risk of rebleeding and 30-day mortality, more than one endoscopy prior to embolization was associated with higher odds of rebleeding, and a high Rockall-score increased the risk of 30-day mortality. We suggest that patients with these risk factors are monitored closely following embolization. Early detection of rebleeding may allow for proper and early re-intervention.
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Affiliation(s)
- Dennis Zetner
- Department of Radiology, North Zealand Hospital, Copenhagen University Hospital, Hilleroed, Denmark.
| | - Ida Roost Rasmussen
- Department of Surgery, Hvidovre Hospital, Copenhagen University Hospital, Hvidovre, Denmark
| | | | - Lasse Rehné Jensen
- Department of Surgery and Transplantation, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Ruben Juul Jensen
- Department of Radiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Emma Possfelt-Møller
- Department of Surgery and Transplantation, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Mikkel Taudorf
- Department of Radiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, Copenhagen University, Copenhagen, Denmark
| | - Luit Penninga
- Department of Surgery and Transplantation, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, Copenhagen University, Copenhagen, Denmark
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16
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Bossen MF, Gormsen J, Kristensen SD, Helgstrand F. Smoking Is Correlated to Internal Hernia After Gastric Bypass Surgery: a Post hoc Analysis of Data from a Randomized Clinical Trial. Obes Surg 2024; 34:1097-1101. [PMID: 38376637 PMCID: PMC11026284 DOI: 10.1007/s11695-024-07097-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/03/2024] [Accepted: 02/07/2024] [Indexed: 02/21/2024]
Abstract
PURPOSE Internal herniation is a well-known complication of laparoscopic Roux-en-Y gastric bypass (L-RYGB). The aim of this study was to evaluate smoking as an independent risk factor for internal herniation after L-RYGB. MATERIALS AND METHODS This study was performed as an exploratory post hoc analysis of data from a previous published randomized controlled trial (RCT) designed to compare closure and non-closure of mesenteric defects in patients undergoing L-RYGB. The primary outcome of this study was to assess the significance of smoking as a risk factor for internal herniation after L-RYGB. Secondary outcome was early postoperative complications defined as Clavien-Dindo grade ≥ 2. RESULTS Four hundred one patients were available for post hoc analysis. The risk of internal herniation was significantly higher among patients who were smoking preoperatively (hazard ratio (HR) 2.4, 95% confidence interval (c.i.) 1.3 to 4.5; p = 0.005). This result persisted after adjusting for other patient characteristics (HR 2.2, 1.2 to 4.2; p = 0.016). 6.0% of the patients had postoperative complications within the first 30 days. 4.9% of these patients were smoking and 6.3% were not smoking, p = 0.657. 11.0% of the patients underwent surgery due to internal herniation by 5 years after the primary procedure. CONCLUSION Smoking is a significant risk factor for internal herniation but did not increase risk for 30 days postoperative complications.
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Affiliation(s)
- Marlene F Bossen
- Department of Gastrointestinal and Hepatic Diseases, Surgical Section, Herlev Hospital, Borgmester Ib Juuls Vej 1, 2730, Herlev, Denmark.
| | - Johanne Gormsen
- Department of Surgery, Zealand University Hospital, 4600, Koege, Denmark
| | - Sara D Kristensen
- Department of Surgery, Zealand University Hospital, 4600, Koege, Denmark
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Mølgaard SN, Nielsen MØ, Roed K, Nielsen J. Clinical experiences of guided tapering of antipsychotics for patients with schizophrenia- a case series. BMC Psychiatry 2024; 24:240. [PMID: 38553687 PMCID: PMC10981298 DOI: 10.1186/s12888-024-05699-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 03/19/2024] [Indexed: 04/01/2024] Open
Abstract
BACKGROUND 80% of patients value information on treatment options as an important part of recovery, further patients with a history of psychotic episodes feel excluded from decision making about their antipsychotic treatment, and on top of that, mental health staff is prone to be reluctant to support shared decision making and medication tapering for patients with schizophrenia. This case series aims to demonstrate the tapering of antipsychotic medication and how guided tapering affects the patient's feeling of autonomy and psychiatric rehabilitation. CASE PRESENTATION We present six patients diagnosed with schizophrenia (International Classification of Mental and Behavioral Disorders- 10th Edition codes F20.0-5, F20.7-9) who underwent professionally guided tapering in our clinic. The clinic aims to guide the patients to identify the lowest possible dose of antipsychotic medication in a safe setting to minimise the risk of severe relapse. Two patients completely discontinued their antipsychotic medication, two suffered a relapse during tapering, one chose to stop the tapering at a low dose, and one patient with treatment resistant schizophrenia, which is still tapering down. CONCLUSIONS Reducing the antipsychotic dose increased emotional awareness in some patients (n = 4) helping them to develop better strategies to handle stress and increased feelings of recovery. Patients felt a greater sense of autonomy and empowerment during the tapering process, even when discontinuation was not possible. Increased awareness in patients and early intervention during relapse may prevent severe relapse. IMPACT AND IMPLICATIONS Some patients with schizophrenia might be over medicated, leading to unwanted side effects and the wish to reduce their medication. The patients in our study illustrate how guided tapering of antipsychotic medication done jointly with the patient can lead to improved emotional awareness and the development of effective symptom management strategies. This may in turn lead to a greater sense of empowerment and identity and give life more meaning, supporting the experience of personal recovery.
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Affiliation(s)
- Sofie Norlin Mølgaard
- Mental Health Center Glostrup, Copenhagen University Hospital, Unit for complicated schizophrenia, Glostrup, Denmark.
| | - Mette Ødegaard Nielsen
- Mental Health Center Glostrup, Copenhagen University Hospital, Unit for complicated schizophrenia, Glostrup, Denmark
| | - Kickan Roed
- Mental Health Centre Glostrup, Copenhagen University Hospital- Mental Health Services CPH, Centre for Applied Research in Mental Health Care, Glostrup, Denmark
| | - Jimmi Nielsen
- Mental Health Center Glostrup, Copenhagen University Hospital, Unit for complicated schizophrenia, Glostrup, Denmark
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18
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Holme S, van Wijk R, Rasmussen AØ, Petersen J, Glenthøj A. Glucose phosphate isomerase deficiency demasked by whole-genome sequencing: a case report. J Med Case Rep 2024; 18:130. [PMID: 38539245 PMCID: PMC10976829 DOI: 10.1186/s13256-024-04466-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 02/16/2024] [Indexed: 04/09/2024] Open
Abstract
BACKGROUND Glucose-6-phosphate isomerase deficiency is a rare genetic disorder causing hereditary nonspherocytic hemolytic anemia. It is the second most common glycolytic enzymopathy in red blood cells. About 90 cases are reported worldwide, with symptoms including chronic hemolytic anemia, jaundice, splenomegaly, gallstones, cholecystitis, and in severe cases, neurological impairments, hydrops fetalis, and neonatal death. CASE PRESENTATION This paper details the case of the first Danish patient diagnosed with glucose-6-phosphate isomerase deficiency. The patient, a 27-year-old white female, suffered from lifelong anemia of unknown origin for decades. Diagnosis was established through whole-genome sequencing, which identified two GPI missense variants: the previously documented variant p.(Thr224Met) and a newly discovered variant p.(Tyr341Cys). The pathogenicity of these variants was verified enzymatically. CONCLUSIONS Whole-genome sequencing stands as a potent tool for identifying hereditary anemias, ensuring optimal management strategies.
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Affiliation(s)
- Sissel Holme
- Danish Red Blood Cell Center, Department of Hematology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Richard van Wijk
- Central Diagnostic Laboratory, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Andreas Ørslev Rasmussen
- Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Jesper Petersen
- Danish Red Blood Cell Center, Department of Hematology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Andreas Glenthøj
- Danish Red Blood Cell Center, Department of Hematology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
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Liljehult J, Molsted S, Møller T, Overgaard D, Christensen T. Lifestyle counselling as secondary prevention in patients with minor stroke or transient ischemic attack: a randomized controlled pilot study. Pilot Feasibility Stud 2024; 10:50. [PMID: 38519983 PMCID: PMC10958836 DOI: 10.1186/s40814-024-01478-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 03/12/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Patients with minor stroke or transient ischemic attacks have an increased risk of future strokes. These patients are often discharged home with limited specialized follow-up, although close to half of them experience cognitive deficits. Simple encouragements to avoid smoking, be physically active, and to take preventive medication are often insufficient to ensure adherence and more comprehensive interventions are needed to support the patients in adapting healthy behaviour. The aim of this study was to test the feasibility and potential effect of an early initiated, patient-centred intervention to patients with minor stroke or transient ischemic attacks targeting smoking, physical activity, and medication adherence, in a randomized, controlled pilot trial. METHODS Hospitalized patients were randomized to usual care or an intervention consisting of health behavioural counselling based on the 5A's model, telephone follow-up (4 and 8 weeks), and monitoring of physical activity. Follow-up time was 12 weeks. Feasibility was on the following domains: eligibility, acceptance, demand and practicality, adherence, attrition, and implementation and integration. RESULTS Forty patients of 84 potentially eligible were randomized to the two treatment arms (20 intervention/20 usual care). Thirty-two completed the 12-week follow-up, while 8 were either excluded or lost to follow-up. With few changes, the intervention was feasible and possible to deliver according to the protocol. CONCLUSION It was possible to identify relevant patients who could potentially benefit from a behavioural intervention, recruit and randomize them early after admission and retain most participants in the study until follow-up and derive statistical estimates to guide the design of large-scale randomized controlled trials. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT03648957 . Registered 28 August 2018.
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Affiliation(s)
- Jacob Liljehult
- Department of Neurology, Nordsjællands Hospital, Dyrehavevej 29, Hillerød, 3400, Denmark.
- Department 9701, The University Hospitals Centre for Health Research (UCSF), Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, Copenhagen, 2100, Denmark.
- Faculty of Health and Technology, Department of Nursing and Nutrition, Copenhagen University College, Tagensvej 86, Copenhagen N, 2200, Denmark.
| | - Stig Molsted
- Department of Clinical Research, Nordsjællands Hospital, Dyrehavevej 29, Hillerød, 3400, Denmark
- Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3, Copenhagen N, 2200, Denmark
| | - Tom Møller
- Department 9701, The University Hospitals Centre for Health Research (UCSF), Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, Copenhagen, 2100, Denmark
- Department of Public Health, University of Copenhagen, Øster Farimagsgade 5, Copenhagen K, 1353, Denmark
| | - Dorthe Overgaard
- Faculty of Health and Technology, Department of Nursing and Nutrition, Copenhagen University College, Tagensvej 86, Copenhagen N, 2200, Denmark
| | - Thomas Christensen
- Department of Neurology, Nordsjællands Hospital, Dyrehavevej 29, Hillerød, 3400, Denmark
- Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3, Copenhagen N, 2200, Denmark
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20
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Pedersen SH, Waage DA, Micali N, Bentz M. Families tackling adolescent anorexia nervosa: family wellbeing in family-based treatment or other interventions. A scoping review. Eat Weight Disord 2024; 29:20. [PMID: 38504003 PMCID: PMC10951015 DOI: 10.1007/s40519-024-01641-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 01/28/2024] [Indexed: 03/21/2024] Open
Abstract
PURPOSE Family-based treatment (FBT) has contributed significantly to the treatment of anorexia nervosa (AN) in young people (YP). However, parents are concerned that FBT and the active role of parents in the task of refeeding may have a negative impact on family relations. The aim of the review is to assess whether families engaged in FBT for AN are more or less impacted in their family wellbeing and caregiver burden, compared to families with a YP diagnosed with AN, who are not undergoing treatment with FBT. METHOD Computerized searches across six databases complemented by a manual search resulted in 30 papers being included in the scoping review. RESULTS The review identified 19 longitudinal studies on change in family wellbeing in families in FBT-like treatments, and 11 longitudinal studies on change in family wellbeing in treatment where parents are not in charge of refeeding. Only three randomized controlled studies directly compare FBT to treatment without parent-led refeeding. CONCLUSION The available research suggests no difference between intervention types regarding impact on family wellbeing. Approximately half of the studies find improvements in family wellbeing in both treatment with and without parent-led refeeding, while the same proportion find neither improvement nor deterioration. As parents play a pivotal role in FBT, there is a need for good quality studies to elucidate the impact of FBT on family wellbeing. Level of evidence Level V: Opinions of authorities, based on descriptive studies, narrative reviews, clinical experience, or reports of expert committees.
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Affiliation(s)
- Signe Holm Pedersen
- Child and Adolescent Mental Health Center, Copenhagen University Hospital-Mental Health Services CPH, Copenhagen, Denmark.
| | - Dorthe Andersen Waage
- Center for Eating and Feeding Disorders Research, Mental Health Center Ballerup, Copenhagen University Hospital - Mental Health Services CPH, Denmark, Ballerup, Denmark
| | - Nadia Micali
- Center for Eating and Feeding Disorders Research, Mental Health Center Ballerup, Copenhagen University Hospital - Mental Health Services CPH, Denmark, Ballerup, Denmark
| | - Mette Bentz
- Child and Adolescent Mental Health Center, Copenhagen University Hospital-Mental Health Services CPH, Copenhagen, Denmark
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21
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Zilstorff DB, Richter MM, Hannibal J, Jørgensen HL, Sennels HP, Wewer Albrechtsen NJ. Secretion of glucagon, GLP-1 and GIP may be affected by circadian rhythm in healthy males. BMC Endocr Disord 2024; 24:38. [PMID: 38481208 PMCID: PMC10938734 DOI: 10.1186/s12902-024-01566-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 03/04/2024] [Indexed: 03/17/2024] Open
Abstract
BACKGROUND Glucagon is secreted from pancreatic alpha cells in response to low blood glucose and increases hepatic glucose production. Furthermore, glucagon enhances hepatic protein and lipid metabolism during a mixed meal. Glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) are secreted from gut endocrine cells during meals and control glucose homeostasis by potentiating insulin secretion and inhibiting food intake. Both glucose homeostasis and food intake have been reported to be affected by circadian rhythms and vice versa. In this study, we investigated whether the secretion of glucagon, GLP-1 and GIP was affected by circadian rhythms. METHODS A total of 24 healthy men with regular sleep schedules were examined for 24 h at the hospital ward with 15 h of wakefulness and 9 h of sleep. Food intake was standardized, and blood samples were obtained every third hour. Plasma concentrations of glucagon, GLP-1 and GIP were measured, and data were analyzed by rhythmometric statistical methods. Available data on plasma glucose and plasma C-peptide were also included. RESULTS Plasma concentrations of glucagon, GLP-1, GIP, C-peptide and glucose fluctuated with a diurnal 24-h rhythm, with the highest levels during the day and the lowest levels during the night: glucagon (p < 0.0001, peak time 18:26 h), GLP-1 (p < 0.0001, peak time 17:28 h), GIP (p < 0.0001, peak time 18:01 h), C-peptide (p < 0.0001, peak time 17.59 h), and glucose (p < 0.0001, peak time 23:26 h). As expected, we found significant correlations between plasma concentrations of C-peptide and GLP-1 and GIP but did not find correlations between glucose concentrations and concentrations of glucagon, GLP-1 and GIP. CONCLUSIONS Our results demonstrate that under meal conditions that are similar to that of many free-living individuals, plasma concentrations of glucagon, GLP-1 and GIP were observed to be higher during daytime and evening than overnight. These findings underpin disturbed circadian rhythm as a potential risk factor for diabetes and obesity. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT06166368. Registered 12 December 2023.
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Affiliation(s)
- Dorte B Zilstorff
- Department of Clinical Biochemistry, Copenhagen University Hospital - Bispebjerg Hospital, Copenhagen, Denmark
| | - Michael M Richter
- Department of Clinical Biochemistry, Copenhagen University Hospital - Bispebjerg Hospital, Copenhagen, Denmark
- NNF Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jens Hannibal
- Department of Clinical Biochemistry, Copenhagen University Hospital - Bispebjerg Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Henrik L Jørgensen
- Department of Clinical Biochemistry, Copenhagen University Hospital - Hvidovre, Hvidovre, Denmark
| | - Henriette P Sennels
- Department of Clinical Biochemistry, Copenhagen University Hospital - Bispebjerg Hospital, Copenhagen, Denmark
| | - Nicolai J Wewer Albrechtsen
- Department of Clinical Biochemistry, Copenhagen University Hospital - Bispebjerg Hospital, Copenhagen, Denmark.
- NNF Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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22
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Xie Z, He W, Gobbi A, Bertram HC, Nielsen DS. The effect of in vitro simulated colonic pH gradients on microbial activity and metabolite production using common prebiotics as substrates. BMC Microbiol 2024; 24:83. [PMID: 38468200 PMCID: PMC10926653 DOI: 10.1186/s12866-024-03235-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/26/2024] [Indexed: 03/13/2024] Open
Abstract
BACKGROUND The interplay between gut microbiota (GM) and the metabolization of dietary components leading to the production of short-chain fatty acids (SCFAs) is affected by a range of factors including colonic pH and carbohydrate source. However, there is still only limited knowledge on how the GM activity and metabolite production in the gastrointestinal tract could be influenced by pH and the pH gradient increases along the colon. RESULTS Here we investigate the effect of pH gradients corresponding to levels typically found in the colon on GM composition and metabolite production using substrates inulin, lactose, galactooligosaccharides (GOS), and fructooligosaccharide (FOS) in an in vitro colon setup. We investigated 3 different pH regimes (low, 5.2 increasing to 6.4; medium, 5.6 increasing to 6.8 and high, 6.0 increasing to 7.2) for each fecal inoculum and found that colonic pH gradients significantly influenced in vitro simulated GM structure, but the influence of fecal donor and substrate was more pronounced. Low pH regimes strongly influenced GM with the decreased relative abundance of Bacteroides spp. and increased Bifidobacterium spp. Higher in vitro simulated colonic pH promoted the production of SCFAs in a donor- and substrate-dependent manner. The butyrate producer Butyricimonas was enriched at higher pH conditions, where also butyrate production was increased for inulin. The relative abundance of Phascolarctobacterium, Bacteroides, and Rikenellaceae also increased at higher colonic pH, which was accompanied by increased production of propionate with GOS and FOS as substrates. CONCLUSIONS Together, our results show that colonic substrates such as dietary fibres influence GM composition and metabolite production, not only by being selectively utilized by specific microbes, but also because of their SCFA production, which in turn also influences colonic pH and overall GM composition and activity. Our work provides details about the effect of the gradients of rising pH from the proximal to distal colon on fermenting dietary substrates in vitro and highlights the importance of considering pH in GM research.
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Affiliation(s)
- Zhuqing Xie
- Department of Food Science, University of Copenhagen, Frederiksberg, Denmark.
| | - Weiwei He
- Department of Food Science, Aarhus University, Aarhus N, Denmark
- Present Address: State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Alex Gobbi
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
- Present Address: European Food and Safety Authority, Parma, Italy
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Grønkjær M, Mortensen EL, Wimmelmann CL, Flensborg-Madsen T, Osler M, Okholm GT. The Danish Aging and Cognition (DanACo) cohort. BMC Geriatr 2024; 24:238. [PMID: 38454360 PMCID: PMC10921587 DOI: 10.1186/s12877-024-04841-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 02/22/2024] [Indexed: 03/09/2024] Open
Abstract
BACKGROUND With aging populations worldwide, identification of predictors of age-related cognitive decline is becoming increasingly important. The Danish Aging and Cognition Cohort (DanACo) including more than 5000 Danish men was established to investigate predictors of age-related cognitive decline from young adulthood to late mid-life. CONSTRUCTION AND CONTENT The DanACo cohort was established through two separate data collections with identical designs involving a follow-up examination in late mid-life of men for whom intelligence test scores were available from their mandatory conscription board examination. The cohort consists of 5,183 men born from 1949 through 1961, with a mean age of 20.4 years at baseline and a mean age of 64.4 years at follow-up. The baseline measures consisted of height, weight, intelligence test score and educational level collected at the conscription board examination. The follow-up assessment consisted of a re-administration of the same intelligence test and a comprehensive questionnaire covering socio-demographic factors, lifestyle, and health-related factors. The data were collected in test sessions with up to 24 participants per session. Using the unique personal identification number assigned to all Danes, the cohort has been linked to data from national administrative and health registers for prospectively collected data on socioeconomic and health-related factors. UTILITY AND DISCUSSION The DanACo cohort has some major strengths compared to existing cognitive aging cohorts such as a large sample size (n = 5,183 men), a validated global measure of cognitive ability, a long retest interval (mean 44.0 years) and the availability of prospectively collected data from registries as well as comprehensive questionnaire data. The main weakness is the low participation rate (14.3%) and that the cohort consists of men only. CONCLUSION Cognitive decline is a result of a summary of factors across the life-course. The DanACo cohort is characterized by a long retest interval and contains data on a wealth of factors across adult life which is essential to establish evidence on predictors of cognitive decline. Moreover, the size of the cohort ensures sufficient statistical power to identify even relatively weak predictors of cognitive decline.
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Affiliation(s)
- Marie Grønkjær
- Center for Clinical Research and Prevention, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Nordre Fasanvej 57, 2000, Frederiksberg, Denmark
| | - Erik Lykke Mortensen
- Department of Public Health, Unit of Medical Psychology, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5, Copenhagen, 1353, Denmark
- Center for Healthy Aging, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Cathrine Lawaetz Wimmelmann
- Department of Public Health, Unit of Medical Psychology, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5, Copenhagen, 1353, Denmark
- Center for Healthy Aging, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
- Centre for Childhood Health, Islands Brygge 41, 2300, Copenhagen S, Denmark
| | - Trine Flensborg-Madsen
- Department of Public Health, Unit of Medical Psychology, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5, Copenhagen, 1353, Denmark
- Center for Healthy Aging, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Merete Osler
- Center for Clinical Research and Prevention, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Nordre Fasanvej 57, 2000, Frederiksberg, Denmark
- Department of Public Health, Section of Epidemiology, University of Copenhagen, Øster Farimagsgade 5, Copenhagen, 1353, Denmark
| | - Gunhild Tidemann Okholm
- Center for Clinical Research and Prevention, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Nordre Fasanvej 57, 2000, Frederiksberg, Denmark.
- Department of Public Health, Unit of Medical Psychology, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5, Copenhagen, 1353, Denmark.
- Center for Healthy Aging, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark.
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Breindahl N, Wolthers SA, Møller TP, Blomberg SNF, Steinmetz J, Christensen HC. Characteristics and critical care interventions in drowning patients treated by the Danish Air Ambulance from 2016 to 2021: a nationwide registry-based study with 30-day follow-up. Scand J Trauma Resusc Emerg Med 2024; 32:17. [PMID: 38448994 PMCID: PMC10916225 DOI: 10.1186/s13049-024-01189-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 02/26/2024] [Indexed: 03/08/2024] Open
Abstract
BACKGROUND Improving oxygenation and ventilation in drowning patients early in the field is critical and may be lifesaving. The critical care interventions performed by physicians in drowning management are poorly described. The aim was to describe patient characteristics and critical care interventions with 30-day mortality as the primary outcome in drowning patients treated by the Danish Air Ambulance. METHODS This retrospective cohort study with 30-day follow-up identified drowning patients treated by the Danish Air Ambulance from January 1, 2016, through December 31, 2021. Drowning patients were identified using a text-search algorithm (Danish Drowning Formula) followed by manual review and validation. Operational and medical data were extracted from the Danish Air Ambulance database. Descriptive analyses were performed comparing non-fatal and fatal drowning incidents with 30-day mortality as the primary outcome. RESULTS Of 16,841 dispatches resulting in a patient encounter in the six years, the Danish Drowning Formula identified 138 potential drowning patients. After manual validation, 98 drowning patients were included in the analyses, and 82 completed 30-day follow-up. The prehospital and 30-day mortality rates were 33% and 67%, respectively. The National Advisory Committee for Aeronautics severity scores from 4 to 7, indicating a critical emergency, were observed in 90% of the total population. They were significantly higher in the fatal versus non-fatal group (p < 0.01). At least one critical care intervention was performed in 68% of all drowning patients, with endotracheal intubation (60%), use of an automated chest compression device (39%), and intraosseous cannulation (38%) as the most frequently performed interventions. More interventions were generally performed in the fatal group (p = 0.01), including intraosseous cannulation and automated chest compressions. CONCLUSIONS The Danish Air Ambulance rarely treated drowning patients, but those treated were severely ill, with a 30-day mortality rate of 67% and frequently required critical care interventions. The most frequent interventions were endotracheal intubation, automated chest compressions, and intraosseous cannulation.
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Affiliation(s)
- Niklas Breindahl
- Prehospital Center Region Zealand, Ringstedgade 61, 13, 4700, Næstved, Denmark.
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
- Department of Neonatal and Paediatric Intensive Care, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark.
| | - Signe A Wolthers
- Prehospital Center Region Zealand, Ringstedgade 61, 13, 4700, Næstved, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Thea P Møller
- Prehospital Center Region Zealand, Ringstedgade 61, 13, 4700, Næstved, Denmark
- Department of Anesthesiology and Intensive Care Medicine, Holbæk Hospital, Holbæk, Region Zealand, Denmark
| | - Stig N F Blomberg
- Prehospital Center Region Zealand, Ringstedgade 61, 13, 4700, Næstved, Denmark
| | - Jacob Steinmetz
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Danish Air Ambulance, Brendstrupgårdsvej 7, 8200, Aarhus, Denmark
- Department of Anaesthesia, Centre of Head and Orthopaedics, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
- Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Helle C Christensen
- Prehospital Center Region Zealand, Ringstedgade 61, 13, 4700, Næstved, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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Reijman S, Christensen Vieira C, Wahl Haase T, Helmerhorst KOW, Pontoppidan M, Grosen SA, Egmose I, Røhder K, Skovgaard Vaever M. A randomized trial of the Caregiver Interaction Profile (CIP) training with childcare providers: the Copenhagen Daycare Project study protocol. BMC Psychol 2024; 12:127. [PMID: 38449031 PMCID: PMC10918888 DOI: 10.1186/s40359-024-01568-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 02/01/2024] [Indexed: 03/08/2024] Open
Abstract
BACKGROUND Most young children (0-3 years) attend formal childcare in Denmark, many of them fulltime. Yet recent reports of the quality of Danish childcare centers have shown that in more than one-third of nurseries, the interactions between caregivers and young children (0-3 years) are of "insufficient" quality, which constitutes a risk for affected children's well-being and development. Effective interventions to improve childcare providers' interactive skills are necessary. METHODS In this randomized controlled trial, we test the effectiveness of the Caregiver Interaction Profile training, which focuses on improving six core interactive skills: sensitive responsiveness, respecting children's autonomy, structuring and limit setting, verbal communication, developmental stimulation, and fostering positive peer interactions. We will recruit N = 200 childcare providers from nursery groups in Copenhagen (n = 100 training group, n = 100 waiting-list control group). Our primary outcomes are childcare providers' six interactive skills named above, observed from video-recorded interactions in the nursery groups. The secondary goal of our study is to test whether the training boosts children's social-emotional and linguistic development. To this end we aim to recruit N ≈ 500 children from participating childcare providers' nursery groups (n ≈ 250 training group, n ≈ 250 waiting-list control group). We measure social-emotional and linguistic development with various standardized questionnaires, filled out by parents and childcare providers. DISCUSSION If the training is effective at improving childcare providers' interactive skills, then this will be an important foundation for implementation efforts, such as offering the training as part of the educational program of childcare providers. Future research should also evaluate whether the Caregiver Interaction Profile training is effective for childcare providers of older children (3-5 years) in Danish kindergartens. TRIAL REGISTRATION This trial is registered at clinicaltrials.gov as "Testing the Effects of the Caregiver Interaction Profile Training on the Interactive Skills of Daycare Providers (CDP)" with registry ID NCT05654116. Registration date: 12/01/2022.
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Affiliation(s)
- Sophie Reijman
- Center for Early Intervention and Family Studies, University of Copenhagen, Copenhagen, Denmark.
| | | | - Tina Wahl Haase
- Center for Early Intervention and Family Studies, University of Copenhagen, Copenhagen, Denmark
| | - Katrien O W Helmerhorst
- Department of Pedagogy and Educational Sciences, Child and Family Welfare, University of Groningen, Groningen, The Netherlands
| | | | - Sofie Amalie Grosen
- Center for Early Intervention and Family Studies, University of Copenhagen, Copenhagen, Denmark
| | - Ida Egmose
- Center for Early Intervention and Family Studies, University of Copenhagen, Copenhagen, Denmark
| | - Katrine Røhder
- Center for Early Intervention and Family Studies, University of Copenhagen, Copenhagen, Denmark
| | - Mette Skovgaard Vaever
- Center for Early Intervention and Family Studies, University of Copenhagen, Copenhagen, Denmark
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Brünés N, Lindstroem MB, Ulrik CS, Andersen O, Lisby M, Godtfredsen NS, Hansen TL, Pisinger C, Graven V, Marsaa K, Thomsen LH. Opportunistic screening for COPD among socially marginalized patients. BMC Pulm Med 2024; 24:113. [PMID: 38443835 PMCID: PMC10916054 DOI: 10.1186/s12890-024-02927-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 02/22/2024] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is a common disease associated with premature death. Tobacco exposure is the main risk factor, but lower socioeconomic status, early life insults, and occupational exposures are also important risk factors. Socially marginalized people, facing homelessness, substance use disorder, and mental illness, are likely to have a higher risk of developing COPD, and, furthermore, experience barriers to healthcare access and consequently poorer outcomes. OBJECTIVE This study aims to assess COPD prevalence and the impact of opportunistic screening among hospitalized patients who are in contact with hospital social nurses. These patients constitute a group of patients with a high prevalence of psychiatric and somatic diseases, substance use, low life expectancy, and are socially marginalized. METHODS The present prospective longitudinal study includes a clinical examination at baseline. Participants will have spirometry done and be interviewed regarding risk factors, socioeconomic conditions, and respiratory symptoms. The 5-year follow-up assessment incorporates data from baseline and register data over the 5 years, including information on morbidity, use of COPD medication, hospital contacts, mortality, and socioeconomic factors. ANTICIPATED RESULTS Referral for further diagnostic work-up and management after the screening, including COPD treatment and smoking cessation support, is expected to improve survival rates. The study is still enrolling patients. TRIAL REGISTRATION The study is registered at ClinicalTrials.gov , NCT04754308 with study status: "enrolling".
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Affiliation(s)
- Nina Brünés
- Department of Quality and Patient Care, Copenhagen University Hospital - Hvidovre, Copenhagen, Denmark
| | - Mette Bendtz Lindstroem
- Department of Clinical Research, Copenhagen University Hospital - Hvidovre, Copenhagen, Denmark.
| | - Charlotte Suppli Ulrik
- Department of Respiratory Medicine, Copenhagen University Hospital - Hvidovre, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ove Andersen
- Department of Clinical Research, Copenhagen University Hospital - Hvidovre, Copenhagen, Denmark
- Emergency Department, Copenhagen University Hospital - Hvidovre, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marianne Lisby
- Research Center for Emergency Medicine, Department of Clinical Medicine, Aarhus University Health, Aarhus, Denmark
- Emergency Department, Aarhus University Hospital, Aarhus, Denmark
| | - Nina Skavlan Godtfredsen
- Department of Respiratory Medicine, Copenhagen University Hospital - Hvidovre, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Tina Leth Hansen
- Department of Quality and Patient Care, Copenhagen University Hospital - Hvidovre, Copenhagen, Denmark
| | - Charlotta Pisinger
- Center for Clinical Research and Prevention, Copenhagen University Hospital- Frederiksberg, Frederiksberg, Denmark
- Tryg Foundation, Virum, Denmark
| | - Vibeke Graven
- REHPA, The Danish Knowledge Centre for Rehabilitation and Palliative Care, Odense University Hospital, Nyborg, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Kristoffer Marsaa
- Department of Multidisease, Copenhagen University Hospital - North Zealand, Hilleroed, Denmark
| | - Laura Hohwü Thomsen
- Department of Respiratory Medicine, Copenhagen University Hospital - Hvidovre, Copenhagen, Denmark
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Zaccagni S, Sigsgaard AM, Vrangbaek K, Noermark LP. Who continues to work after retirement age? BMC Public Health 2024; 24:692. [PMID: 38438993 PMCID: PMC10913677 DOI: 10.1186/s12889-024-18161-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 02/20/2024] [Indexed: 03/06/2024] Open
Abstract
BACKGROUND Demographic changes in all industrialized countries have led to a keen interest in extending working lives for older workers. To achieve this goal, it is essential to understand the patterns of retirement and specifically what characterizes individuals who continue to work beyond retirement age. Thus, the aim of this paper was to contribute to the international body of empirical knowledge about individuals who continue in the workforce after retirement age. We present evidence from Denmark and examine what characterizes individuals who continue in the workforce after retirement age and investigate the likelihood of continued work after retirement age while controlling for a set of socio-economic and lifestyle factors. METHODS The study population consisted of 5,474 respondents to the Copenhagen Aging and Midlife Biobank (CAMB) 2021 survey, divided into two groups. The first group included subjects (n = 1,293) who stayed longer in the workforce even though they had the possibility to retire. The second group consisted of subjects who had retired full-time at the time of the survey (n = 4,181). Survey data was linked to register data to provide a broader dataset. In order to investigate the heterogeneity between the two groups in terms of important socio-economic, work-related and health-related variables, t-test, Mann-Whitney U (Wilcoxon Rank) test, and chi-square tests were employed. Further, to examine the probability of an individual working after retirement age a logit model with step-wise inclusion was utilized. RESULTS Overall, individuals who continue to work even though they could retire tend to be wealthier, healthier, and males compared to individuals who are retired full-time. Further, there are more older workers who have partners and are co-habitants than retirees. The likelihood of continuing in the workforce past retirement age is affected by several work-related factors as well as life-style factors. The likelihood of working past retirement age decreases by years spent in the workforce (marginal effect of -0.003), if you have a partner (-0.080) and if your partner is outside of the workforce (marginal effect of -0.106). The likelihood increases by health (marginal effect of -0.044 of moving from excellent/very good health to good health or to fair/poor health, physical working capability (marginal effect of -0.083 of moving from no/some problems to severe problems or cannot work at all) and income (marginal effect of 0.083 from moving from the lowest income-quantile to higher quantiles). CONCLUSION These results are in line with the previous literature and suggest the importance of designing retirement policies that tailor the transition toward retirement according to specific characteristics of both the individual and the segment of occupation.
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Affiliation(s)
- Sarah Zaccagni
- Department of Economics & Business Economics, Aarhus University, Aarhus, Denmark
| | - Anna Munk Sigsgaard
- Department of Prevention, Health Promotion and Community Care, Steno Diabetes Center Copenhagen, Herlev, Denmark
| | - Karsten Vrangbaek
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
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Muse VP, Placido D, Haue AD, Brunak S. Seasonally adjusted laboratory reference intervals to improve the performance of machine learning models for classification of cardiovascular diseases. BMC Med Inform Decis Mak 2024; 24:62. [PMID: 38438861 PMCID: PMC10910795 DOI: 10.1186/s12911-024-02467-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 02/26/2024] [Indexed: 03/06/2024] Open
Abstract
BACKGROUND Variation in laboratory healthcare data due to seasonal changes is a widely accepted phenomenon. Seasonal variation is generally not systematically accounted for in healthcare settings. This study applies a newly developed adjustment method for seasonal variation to analyze the effect seasonality has on machine learning model classification of diagnoses. METHODS Machine learning methods were trained and tested on ~ 22 million unique records from ~ 575,000 unique patients admitted to Danish hospitals. Four machine learning models (adaBoost, decision tree, neural net, and random forest) classifying 35 diseases of the circulatory system (ICD-10 diagnosis codes, chapter IX) were run before and after seasonal adjustment of 23 laboratory reference intervals (RIs). The effect of the adjustment was benchmarked via its contribution to machine learning models trained using hyperparameter optimization and assessed quantitatively using performance metrics (AUROC and AUPRC). RESULTS Seasonally adjusted RIs significantly improved cardiovascular disease classification in 24 of the 35 tested cases when using neural net models. Features with the highest average feature importance (via SHAP explainability) across all disease models were sex, C- reactive protein, and estimated glomerular filtration. Classification of diseases of the vessels, such as thrombotic diseases and other atherosclerotic diseases consistently improved after seasonal adjustment. CONCLUSIONS As data volumes increase and data-driven methods are becoming more advanced, it is essential to improve data quality at the pre-processing level. This study presents a method that makes it feasible to introduce seasonally adjusted RIs into the clinical research space in any disease domain. Seasonally adjusted RIs generally improve diagnoses classification and thus, ought to be considered and adjusted for in clinical decision support methods.
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Affiliation(s)
- Victorine P Muse
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Davide Placido
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Amalie D Haue
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark
- Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2200, Copenhagen, Denmark
| | - Søren Brunak
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark.
- Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2200, Copenhagen, Denmark.
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Spore LM, Dencker EE, Kvanner EA, Hansen CP, Burgdorf SK, Krohn PS, Kollbeck SLG, Storkholm JH, Sillesen M. Perioperative factors associated with survival following surgery for pancreatic cancer - a nationwide analysis of 473 cases from Denmark. BMC Surg 2024; 24:76. [PMID: 38431571 PMCID: PMC10908011 DOI: 10.1186/s12893-024-02369-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 02/23/2024] [Indexed: 03/05/2024] Open
Abstract
BACKGROUND Pancreatic ductal adenocarcinoma (PDAC) remains one of the most lethal cancers worldwide, with an overall 5-year survival rate of only 5%. The effect of perioperative treatment factors including duration of surgery, blood transfusions as well as choice of anesthesia and analgesia techniques on overall survival (OS) following pancreatic resections for PDAC, is currently not well known. We hypothesized that these perioperative factors might be associated with OS after pancreatic resections for PDAC. METHODS This is a retrospective study from a nationwide cohort of patients who underwent surgery for PDAC in Denmark from 2011 to 2020. Kaplan-Meier 1, 2 and 5-year survival estimates were 73%, 49% and 22%, respectively. Data were obtained by joining the national Danish Pancreatic Cancer Database (DPCD) and the Danish Anaesthesia Database (DAD). Associations between the primary endpoint (OS) and perioperative factors including duration of surgery, type of anesthesia (intravenous, inhalation or mixed), use of epidural analgesia and perioperative blood transfusions were assessed using Hazard Ratios (HRs). These were calculated by Cox regression, controlling for relevant confounders identified through an assessment of the current literature. These included demographics, comorbidities, perioperative information, pre and postoperative chemotherapy, tumor staging and free resection margins. RESULTS Overall, data from 473 resected PDAC patients were available. Multivariate Cox regression indicated that perioperative blood transfusions were associated with shorter OS (HR 2.53, p = 0.005), with survival estimates of 8.8% in transfused vs. 28.0% in non-transfused patients at 72 months after surgery. No statistically significant associations were identified for the duration of surgery or anesthesia/analgesia techniques. CONCLUSION In this study, the use of perioperative blood transfusions was associated with shorter OS.
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Affiliation(s)
- Laura Marr Spore
- Department of Organ Surgery and Transplantation, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Emilie Even Dencker
- Department of Organ Surgery and Transplantation, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Eske Aasvang Kvanner
- Department of Anesthesia, Copenhagen University Hospital, Rigshospitalet, Denmark
- Institute of Clinical Medicine, University of Copenhagen Medical School, Copenhagen, Denmark
| | - Carsten Palnaes Hansen
- Department of Organ Surgery and Transplantation, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Stefan Kobbelgaard Burgdorf
- Department of Organ Surgery and Transplantation, Copenhagen University Hospital, Rigshospitalet, Denmark
- Institute of Clinical Medicine, University of Copenhagen Medical School, Copenhagen, Denmark
| | - Paul Suno Krohn
- Department of Organ Surgery and Transplantation, Copenhagen University Hospital, Rigshospitalet, Denmark
| | | | - Jan Henrik Storkholm
- Department of Organ Surgery and Transplantation, Copenhagen University Hospital, Rigshospitalet, Denmark
- Department of Surgery, Imperial College NHS Trust, Hammersmith Hospital, London, UK
| | - Martin Sillesen
- Department of Organ Surgery and Transplantation, Copenhagen University Hospital, Rigshospitalet, Denmark.
- Institute of Clinical Medicine, University of Copenhagen Medical School, Copenhagen, Denmark.
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Alvarenga DO, Priemé A, Rousk K. The Feather Moss Hylocomium splendens Affects the Transcriptional Profile of a Symbiotic Cyanobacterium in Relation to Acquisition and Turnover of Key Nutrients. Microb Ecol 2024; 87:49. [PMID: 38427046 PMCID: PMC10907420 DOI: 10.1007/s00248-024-02363-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/21/2024] [Indexed: 03/02/2024]
Abstract
Moss-cyanobacteria symbioses were proposed to be based on nutrient exchange, with hosts providing C and S while bacteria provide N, but we still lack understanding of the underlying molecular mechanisms of their interactions. We investigated how contact between the ubiquitous moss Hylocomium splendens and its cyanobiont affects nutrient-related gene expression of both partners. We isolated a cyanobacterium from H. splendens and co-incubated it with washed H. splendens shoots. Cyanobacterium and moss were also incubated separately. After 1 week, we performed acetylene reduction assays to estimate N2 fixation and RNAseq to evaluate metatranscriptomes. Genes related to N2 fixation and the biosynthesis of several amino acids were up-regulated in the cyanobiont when hosted by the moss. However, S-uptake and the biosynthesis of the S-containing amino acids methionine and cysteine were down-regulated in the cyanobiont while the degradation of selenocysteine was up-regulated. In contrast, the number of differentially expressed genes in the moss was much lower, and almost no transcripts related to nutrient metabolism were affected. It is possible that, at least during the early stage of this symbiosis, the cyanobiont receives few if any nutrients from the host in return for N, suggesting that moss-cyanobacteria symbioses encompass relationships that are more plastic than a constant mutualist flow of nutrients.
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Affiliation(s)
- Danillo Oliveira Alvarenga
- Department of Biology, University of Copenhagen, Universitetsparken 15, 2100, Copenhagen, Denmark.
- Center for Volatile Interactions, University of Copenhagen, Universitetsparken 15, 2100, Copenhagen, Denmark.
| | - Anders Priemé
- Department of Biology, University of Copenhagen, Universitetsparken 15, 2100, Copenhagen, Denmark
- Center for Volatile Interactions, University of Copenhagen, Universitetsparken 15, 2100, Copenhagen, Denmark
| | - Kathrin Rousk
- Department of Biology, University of Copenhagen, Universitetsparken 15, 2100, Copenhagen, Denmark
- Center for Volatile Interactions, University of Copenhagen, Universitetsparken 15, 2100, Copenhagen, Denmark
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Christoffersen T, Riis T, Sonne DP, Klarskov N. Single-dose Tadalafil Reduces Opening Urethral Pressure: A Randomized, Double-blind, Placebo-controlled, Crossover Trial in Healthy Women. Int Urogynecol J 2024; 35:723-729. [PMID: 38456894 PMCID: PMC11024010 DOI: 10.1007/s00192-024-05757-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/02/2024] [Indexed: 03/09/2024]
Abstract
INTRODUCTION AND HYPOTHESIS Phosphodiesterase enzymes are widely distributed in female urogenital tissues. Yet, the understanding of their physiological roles and the impact of phosphodiesterase inhibitors on lower urinary tract symptoms in women remains limited. Current hypotheses are conflicting: one suggests that vasodilation might expand the periurethral vascular plexus, leading to increased urethral pressure, whereas the other proposes a relaxation of urethral musculature, resulting in decreased pressure. To further clarify this, we investigated the effect of tadalafil on the opening urethral pressure and voiding function in healthy women. METHODS We conducted a randomized, double-blind, placebo-controlled crossover trial involving 24 healthy women. Participants were randomly assigned to receive a single dose of tadalafil (40 mg) or placebo during their initial visit and then switched to the alternative treatment during their second visit. Opening urethral pressure was measured with urethral pressure reflectometry during both resting and squeezing conditions of the pelvic floor. Subsequently, voiding parameters were recorded. RESULTS Compared with placebo, a single dose of tadalafil significantly reduced opening urethral pressure during both resting (-6.8 cmH20; 95% confidence interval [CI], -11.8 to -1.9; p = 0.009) and squeezing conditions (-8.8 cmH20; 95% CI, -14.6 to -3.1; p = 0.005). Voiding parameters did not show significant differences (average flow rate: -0.8 ml/s [95% CI, -2.0 to 0.4; p = 0.2]; maximum flow rate: -1.7 ml/s [95% CI, -4.8 to 1.5; p = 0.3]). CONCLUSIONS A single dose of 40 mg tadalafil moderately reduced urethral pressure in healthy women, without affecting voiding parameters. The clinical implications of this are yet to be determined.
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Affiliation(s)
- Thea Christoffersen
- Department of Clinical Pharmacology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Bispebjerg Bakke 23, 2400, Copenhagen, Denmark.
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
| | - Troels Riis
- Department of Clinical Pharmacology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Bispebjerg Bakke 23, 2400, Copenhagen, Denmark
| | - David P Sonne
- Department of Clinical Pharmacology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Bispebjerg Bakke 23, 2400, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Niels Klarskov
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Department of Gynecology and Obstetrics, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
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Blum NS, Esbensen BA, Østergaard M, Bremander A, Hendricks O, Lindgren LH, Andersen L, Jensen KV, Primdahl J. Patients' experience of a novel interdisciplinary nurse-led self-management intervention (INSELMA)-a qualitative evaluation. BMC Rheumatol 2024; 8:10. [PMID: 38429851 PMCID: PMC10905856 DOI: 10.1186/s41927-024-00379-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 02/09/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND Despite continuous improvements in anti-rheumatic pharmacological treatment, people with chronic inflammatory arthritis still report substantial disease impact. Based on the framework for complex interventions, we thus developed INSELMA, a novel nurse-coordinated multidisciplinary self-management intervention for patients with rheumatoid arthritis, psoriatic arthritis or axial spondyloarthritis. Based on individual biopsychosocial assessments, a rheumatology nurse facilitated goal setting and coordinated interdisciplinary support. The aim of this study was to explore the patients' experience of participating in the six-months INSELMA intervention. METHODS Individual semi-structured interviews were conducted with 15 of the participants after their final follow-up. Thematic analysis was applied. RESULTS The analysis derived four overall themes. (1) A new opportunity at the right time. The participants' disease impacted all areas of daily life. Participation in INSELMA was experienced as an opportunity to improve symptoms and together reduce long-held challenges they had fought alone, until now. (2) The importance of person-centred goals. The participants found it meaningful to work with their individual goals, which encompassed physical, psychological, and social factors. Having time between consultations to work with goals at home was important. (3) Empathy, partnership and a little nudging from health professionals are essential. The empathic nurses' continuous support and coaching helped participants become aware of their own resources. The participants highlighted having access to support from a physiotherapist and occupational therapist with rheumatology experience as important. (4) I got more than I could have hoped for. Most of the participants experienced decreased symptom load and improvement in physical strength, mobility, sleep, and mood as well as increased energy, knowledge, and self-management ability. The participants expressed new hope for the future with an improved ability to manage their symptoms and work towards new goals. CONCLUSION The participants found the INSELMA intervention meaningful and feasible. They experienced decreased disease impact and increased activity levels, facilitated by empathy and self-management support from health professionals.
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Affiliation(s)
- Nadine Schäffer Blum
- Copenhagen Center for Arthritis Research (COPECARE), Center for Rheumatology and Spine Diseases, Copenhagen University Hospital Rigshospitalet, Glostrup, Denmark.
| | - Bente Appel Esbensen
- Copenhagen Center for Arthritis Research (COPECARE), Center for Rheumatology and Spine Diseases, Copenhagen University Hospital Rigshospitalet, Glostrup, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Mikkel Østergaard
- Copenhagen Center for Arthritis Research (COPECARE), Center for Rheumatology and Spine Diseases, Copenhagen University Hospital Rigshospitalet, Glostrup, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ann Bremander
- Danish Hospital for Rheumatic Diseases, University Hospital of Southern Denmark, Sønderborg, Denmark
- Section of Rheumatology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
- Spenshult Research and Development Centre, Halmstad, Sweden
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Oliver Hendricks
- Danish Hospital for Rheumatic Diseases, University Hospital of Southern Denmark, Sønderborg, Denmark
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Luise Holberg Lindgren
- Copenhagen Center for Arthritis Research (COPECARE), Center for Rheumatology and Spine Diseases, Copenhagen University Hospital Rigshospitalet, Glostrup, Denmark
| | - Lena Andersen
- Danish Hospital for Rheumatic Diseases, University Hospital of Southern Denmark, Sønderborg, Denmark
- Patient research partner, Nyborg, Denmark
| | - Kim Vilbaek Jensen
- Copenhagen Center for Arthritis Research (COPECARE), Center for Rheumatology and Spine Diseases, Copenhagen University Hospital Rigshospitalet, Glostrup, Denmark
- Patient research partner, Helsingør, Denmark
| | - Jette Primdahl
- Danish Hospital for Rheumatic Diseases, University Hospital of Southern Denmark, Sønderborg, Denmark
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
- University Hospital of Southern Denmark, Aabenraa, Denmark
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Groot J, Keller A, Sigsgaard T, Loft S, Nybo Andersen AM. Residential exposure to mold, dampness, and indoor air pollution and risk of respiratory tract infections: a study among children ages 11 and 12 in the Danish National Birth Cohort. Eur J Epidemiol 2024; 39:299-311. [PMID: 38393605 PMCID: PMC10994992 DOI: 10.1007/s10654-024-01101-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 01/10/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND The burden of respiratory tract infections (RTIs) is high in childhood. Several residential exposures may affect relative rates. OBJECTIVES To determine risk of RTIs in children ages 11 and 12 by residential exposures. METHODS We included children in the Danish National Birth Cohort (DNBC) at ages 11 and 12. We estimated incidence risk ratios (IRR) and 95% confidence intervals (CI) for counts of RTIs within the last year by exposure to mold/dampness, gas stove usage, summer and winter candle-burning, fireplace usage, cats and dogs indoors, and farmhouse living. We also estimated IRR and 95% CI for RTIs for predicted scores of four extracted factors ('owned house', 'mold and dampness', 'candles', and 'density') from exploratory factor analyses (EFA). RESULTS We included 42 720 children with complete data. Mold/dampness was associated with all RTIs (common cold: IRRadj 1.09[1.07, 1.12]; influenza: IRRadj 1.10 [1.05, 1.15]; tonsillitis: IRRadj 1.19 [1.10, 1.28]; conjunctivitis: IRRadj 1.16 [1.02, 1.32]; and doctor-diagnosed pneumonia: IRRadj 1.05 [0.90, 1.21]), as was the EFA factor 'mold/dampness' for several outcomes. Gas stove usage was associated with conjunctivitis (IRRadj 1.25 [1.05, 1.49]) and with doctor-diagnosed pneumonia (IRRadj 1.14 [0.93, 1.39]). Candle-burning during summer, but not winter, was associated with several RTIs, for tonsillitis in a dose-dependent fashion (increasing weekly frequencies vs. none: [IRRadj 1.06 [0.98, 1.14], IRRadj 1.16 [1.04, 1.30], IRRadj 1.23 [1.06, 1.43], IRRadj 1.29 [1.00, 1.67], and IRRadj 1.41 [1.12, 1.78]). CONCLUSION Residential exposures, in particular to mold and dampness and to a lesser degree to indoor combustion sources, are related to the occurrence of RTIs in children.
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Affiliation(s)
- Jonathan Groot
- Section of Epidemiology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark.
| | - Amélie Keller
- Section of Epidemiology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Torben Sigsgaard
- Environment, Work and Health, Department of Public Health, University of Aarhus, Aarhus, Denmark
| | - Steffen Loft
- Section of Environmental Health, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Anne-Marie Nybo Andersen
- Section of Epidemiology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
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Bräuner KB, Tsouchnika A, Mashkoor M, Williams R, Rosen AW, Hartwig MFS, Bulut M, Dohrn N, Rijnbeek P, Gögenur I. Prediction of 30-day, 90-day, and 1-year mortality after colorectal cancer surgery using a data-driven approach. Int J Colorectal Dis 2024; 39:31. [PMID: 38421482 PMCID: PMC10904562 DOI: 10.1007/s00384-024-04607-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/21/2024] [Indexed: 03/02/2024]
Abstract
PURPOSE To develop prediction models for short-term mortality risk assessment following colorectal cancer surgery. METHODS Data was harmonized from four Danish observational health databases into the Observational Medical Outcomes Partnership Common Data Model. With a data-driven approach using the Least Absolute Shrinkage and Selection Operator logistic regression on preoperative data, we developed 30-day, 90-day, and 1-year mortality prediction models. We assessed discriminative performance using the area under the receiver operating characteristic and precision-recall curve and calibration using calibration slope, intercept, and calibration-in-the-large. We additionally assessed model performance in subgroups of curative, palliative, elective, and emergency surgery. RESULTS A total of 57,521 patients were included in the study population, 51.1% male and with a median age of 72 years. The model showed good discrimination with an area under the receiver operating characteristic curve of 0.88, 0.878, and 0.861 for 30-day, 90-day, and 1-year mortality, respectively, and a calibration-in-the-large of 1.01, 0.99, and 0.99. The overall incidence of mortality were 4.48% for 30-day mortality, 6.64% for 90-day mortality, and 12.8% for 1-year mortality, respectively. Subgroup analysis showed no improvement of discrimination or calibration when separating the cohort into cohorts of elective surgery, emergency surgery, curative surgery, and palliative surgery. CONCLUSION We were able to train prediction models for the risk of short-term mortality on a data set of four combined national health databases with good discrimination and calibration. We found that one cohort including all operated patients resulted in better performing models than cohorts based on several subgroups.
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Affiliation(s)
- Karoline Bendix Bräuner
- Center for Surgical Science, Zealand University Hospital, Køge, Lykkebækvej 1, 4600, Køge, Denmark.
| | - Andi Tsouchnika
- Center for Surgical Science, Zealand University Hospital, Køge, Lykkebækvej 1, 4600, Køge, Denmark
| | - Maliha Mashkoor
- Center for Surgical Science, Zealand University Hospital, Køge, Lykkebækvej 1, 4600, Køge, Denmark
| | - Ross Williams
- Department of Medical Informatics, Erasmus University Medical Center, Doctor Molewaterplein 40, 3015 GD, Rotterdam, Holland, Netherlands
| | - Andreas Weinberger Rosen
- Center for Surgical Science, Zealand University Hospital, Køge, Lykkebækvej 1, 4600, Køge, Denmark
| | | | - Mustafa Bulut
- Center for Surgical Science, Zealand University Hospital, Køge, Lykkebækvej 1, 4600, Køge, Denmark
- University of Copenhagen, The Faculty of Health Science, Blegdamsvej 6, 2200, Copenhagen N, Denmark
| | - Niclas Dohrn
- Center for Surgical Science, Zealand University Hospital, Køge, Lykkebækvej 1, 4600, Køge, Denmark
- Department of Surgery, Copenhagen University Hospital, Herlev & Gentofte, Borgmester Ib Juuls vej 1, 2730, Herlev, Denmark
| | - Peter Rijnbeek
- Department of Medical Informatics, Erasmus University Medical Center, Doctor Molewaterplein 40, 3015 GD, Rotterdam, Holland, Netherlands
| | - Ismail Gögenur
- Center for Surgical Science, Zealand University Hospital, Køge, Lykkebækvej 1, 4600, Køge, Denmark
- University of Copenhagen, The Faculty of Health Science, Blegdamsvej 6, 2200, Copenhagen N, Denmark
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Roldgaard M, Benfield T, Tingsgård S. Blood neutrophil to lymphocyte ratio is associated with 90-day mortality and 60-day readmission in Gram negative bacteremia: a multi-center cohort study. BMC Infect Dis 2024; 24:255. [PMID: 38395788 PMCID: PMC10893647 DOI: 10.1186/s12879-024-09127-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
INTRODUCTION The Neutrophil-Lymphocyte Ratio (NLR) in blood has demonstrated its capability to predict bacteremia in emergency departments, and its association with mortality has been established in patients with sepsis in intensive care units. However, its potential concerning mortality and readmission in patients with Gram-negative bacteremia (GNB) is unexplored. METHODS This retrospective cohort study included patients with GNB between 2018 and 2022 from six hospitals in the Capital Region of Denmark. Patients who were immunosuppressed or had missing NLR values on the day of blood culture were excluded. Logistic regression models were used to analyze the association between NLR levels and 90-day all-cause mortality, while the logit link interpretation of the cumulative incidence function was used to assess the association between NLR levels and 60-day readmission. Associations were quantified as odds ratios (OR) with corresponding 95% confidence intervals (CI). RESULTS The study included 1763 patients with a median age was 76.8 years and 51.3% were female. The median NLR was 17.3 and 15.8% of patients had a quick sequential organ failure assessment score of two or three. Urinary tract infection (UTI) was the most frequent focus and Escherichia coli the most frequent pathogen. Statistically significant differences in median NLR were found by age group and pathogen, and for patients with or without hypertension, liver disease, chronic obstructive pulmonary disease, dementia, and alcohol abuse. 378 patients (21.4%) died before 90 days. 526 (29.8%) patients were readmitted to the hospital within 60 days. For each doubling of the NLR, the OR for all-cause 90-day mortality was 1.15 (95% CI, 1.04-1.27) and 1.12 (95% CI, 1.02-1.24) for 60-day readmission. Analysis of subgroups did not show statistically significant differences between groups in relation to the association between NLR and mortality. The discriminatory ability of NLR for mortality was limited and comparable to blood neutrophil or lymphocyte count, producing receiver operating characteristic curves with an area under the curve of 0.59 (95% CI, 0.56-0.63), 0.60 (95% CI, 0.56-0.65) and 0.53 (95% CI, 0.49-0.56), respectively. CONCLUSION Blood neutrophil-lymphocyte ratio was associated with 90-day all-cause mortality and 60-day readmission in patients with GNB. However, the ratio has limited ability in predicting mortality or readmission.
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Affiliation(s)
- Marcus Roldgaard
- Copenhagen University Hospital- Amager and Hvidovre Hospital, Copenhagen, Denmark.
| | - Thomas Benfield
- Copenhagen University Hospital- Amager and Hvidovre Hospital, Copenhagen, Denmark
| | - Sandra Tingsgård
- Copenhagen University Hospital- Amager and Hvidovre Hospital, Copenhagen, Denmark
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Kjær BH, Cools AM, Johannsen FE, Trøstrup J, Bieler T, Siersma V, Magnusson PS. To allow or avoid pain during shoulder rehabilitation exercises for patients with chronic rotator cuff tendinopathy-Study protocol for a randomized controlled trial (the PASE trial). Trials 2024; 25:135. [PMID: 38383459 PMCID: PMC10880378 DOI: 10.1186/s13063-024-07973-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 02/06/2024] [Indexed: 02/23/2024] Open
Abstract
BACKGROUND Rotator cuff (RC) tendinopathy is the most reported shoulder disorder in the general population with highest prevalence in overhead athletes and adult working-age population. A growing body of evidence support exercise therapy as an effective intervention, but to date there are no prospective randomized controlled trials addressing pain as an intervention variable. METHODS A single-site, prospective, pragmatic, assessor-blinded randomized controlled superiority trial. Eighty-four patients aged 18-55 years with chronic (symptom duration over 3 months) RC tendinopathy are randomized 1:1 to receive shoulder exercise during which pain is either allowed or avoided. The intervention period lasts 26 weeks. During that period, participants in both groups are offered 8 individual on-site sessions with an assigned sports physiotherapist. Participants perform home exercises and are provided with a pain and exercise logbook and asked to report completed home-based exercise sessions and reasons for not completing sessions (pain or other reasons). Patients are also asked to report load and the number of sets and repetitions per sets for each exercise session. The logbooks are collected continuously throughout the intervention period. The primary and secondary outcomes are obtained at baseline, 6 weeks, 26 weeks, and 1 year after baseline. The primary outcome is patient-reported pain and disability using the Shoulder PAin and Disability Index (SPADI). Secondary outcomes are patient-reported pain and disability using Disability Arm Shoulder and Hand short-form (Quick DASH), and shoulder pain using Numeric Pain Rating Scale. Objective outcomes are shoulder range of motion, isometric shoulder muscle strength, pain sensitivity, working ability, and structural changes in the supraspinatus tendon and muscle using ultrasound. DISCUSSION The results of this study will contribute knowledge about the treatment strategies for patients with RC tendinopathy and help physiotherapists in clinical decision-making. This is the first randomized controlled trial comparing the effects of allowing pain versus avoiding pain during shoulder exercises in patients with chronic RC tendinopathy. If tolerating pain during and after exercise proves to be effective, it will potentially expand our understanding of "exercising into pain" for this patient group, as there is currently no consensus. TRIAL REGISTRATION ClinicalTrials.gov NCT05124769. Registered on August 11, 2021.
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Affiliation(s)
- Birgitte Hougs Kjær
- Department of Physical and Occupational Therapy, University Hospital Bispebjerg Frederiksberg (BFH), Bispebjerg Bakke 23, 2400, Copenhagen, NV, Denmark.
- Institute of Sports Medicine Copenhagen, Department of Orthopaedic Surgery, University Hospital Bispebjerg Frederiksberg (BFH), Bispebjerg Bakke 23, 2400, Copenhagen, NV, Denmark.
| | - Ann M Cools
- Department of Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Ghent University, Campus UZ Gent, Corneel Heymanslaan 10, B3, Entrance 46, 9000, Gent, Belgium
| | - Finn E Johannsen
- Institute of Sports Medicine Copenhagen, Department of Orthopaedic Surgery, University Hospital Bispebjerg Frederiksberg (BFH), Bispebjerg Bakke 23, 2400, Copenhagen, NV, Denmark
| | - Jeanette Trøstrup
- The Danish Clinical Quality Program-National Clinical Registries (RKKP), Regionshuset Aarhus, Hedeager 3, 8200 Aarhus N, Aarhus, Denmark
| | - Theresa Bieler
- Department of Physical and Occupational Therapy, University Hospital Bispebjerg Frederiksberg (BFH), Bispebjerg Bakke 23, 2400, Copenhagen, NV, Denmark
| | - Volkert Siersma
- Department of Public Health, The Research Unit for General Practice and Section of General Practice, University of Copenhagen, Oster Farimagsgade 5, 1353, Copenhagen K, Denmark
| | - Peter S Magnusson
- Department of Physical and Occupational Therapy, University Hospital Bispebjerg Frederiksberg (BFH), Bispebjerg Bakke 23, 2400, Copenhagen, NV, Denmark
- Institute of Sports Medicine Copenhagen, Department of Orthopaedic Surgery, University Hospital Bispebjerg Frederiksberg (BFH), Bispebjerg Bakke 23, 2400, Copenhagen, NV, Denmark
- Department of Health and Medical Sciences, Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
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Thuraiaiyah J, Ashina H, Christensen RH, Al-Khazali HM, Ashina M. Postdromal symptoms in migraine: a REFORM study. J Headache Pain 2024; 25:25. [PMID: 38383318 PMCID: PMC10880332 DOI: 10.1186/s10194-024-01716-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 01/14/2024] [Indexed: 02/23/2024] Open
Abstract
BACKGROUND Migraine is a multiphasic neurovascular disorder, where headache can be succeeded by postdromal symptoms. However, there are limited research on postdromal symptoms. This study aimed to investigate the proportion of individuals with migraine from a tertiary care unit reporting postdromal symptoms in adherence with the ICHD-3 definition. We also aimed to examine how the means of enquiry might influence the estimated proportions. Additionally, we explored whether any clinical features might affect the likelihood of reporting postdromal symptoms. Finally, we assessed to what extend the postdromal symptoms might impact the disease burden. METHODS In a cross-sectional study, we enrolled adult participants diagnosed with migraine who were asked to report their postdromal symptoms (i.e., unprompted reporting). Subsequently, a 16-item list was used to further ascertain the occurrence of postdromal symptoms (i.e., prompted reporting). Clinical characteristics were obtained through a semi-structured interview. Moreover, electronic questionnaires were used to assess the disease burden, i.e., the Six-Item Headache Impact Test (HIT-6), Migraine Disability Assessment (MIDAS), and the World Health Organization Disability Assessment 2.0 (WHODAS 2.0). RESULTS Among 631 participants with migraine, a higher proportion experienced at least one postdromal symptom when prompted (n = 509 [80.7%]) compared with unprompted reporting (n = 421 [66.7%], P < 0.001). Furthermore, the total number of postdromal symptoms experienced was greater with prompted than unprompted reporting (medians 3 [IQR 1 - 6] versus 1 [IQR 0 - 2]; P < 0.001). Furthermore, the likelihood of reporting postdromal symptoms increased with the presence of premonitory symptoms and decreased with higher number of monthly migraine days. Weak correlations were identified between the number of postdromal symptoms reported and both HIT-6 (ρ = 0.14; P < 0.001) and WHODAS scores (ρ = 0.15; P < 0.001), whilst no correlation was observed with MIDAS score (ρ = 0.08; P = 0.054). CONCLUSIONS Postdromal symptoms are prevalent in individuals with migraine from a tertiary care unit. However, reported estimates warrant cautious interpretation as they depend on the means of enquiry, presence of premonitory symptoms, and frequency of monthly migraine days. Moreover, a weak correlation was identified between the number of postdromal symptoms and both HIT-6 and WHODAS scores, indicating only a marginal influence on the disease burden.
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Affiliation(s)
- Janu Thuraiaiyah
- Danish Headache Center, Department of Neurology, Rigshospitalet - Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, 2600, Glostrup, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Håkan Ashina
- Danish Headache Center, Department of Neurology, Rigshospitalet - Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, 2600, Glostrup, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Brain and Spinal Cord Injury, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Harvard Medical School, Boston, MA, USA
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Rune Häckert Christensen
- Danish Headache Center, Department of Neurology, Rigshospitalet - Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, 2600, Glostrup, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Harvard Medical School, Boston, MA, USA
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Haidar M Al-Khazali
- Danish Headache Center, Department of Neurology, Rigshospitalet - Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, 2600, Glostrup, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Harvard Medical School, Boston, MA, USA
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Messoud Ashina
- Danish Headache Center, Department of Neurology, Rigshospitalet - Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, 2600, Glostrup, Denmark.
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
- Danish Knowledge Center On Headache Disorders, Glostrup, Denmark.
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Jensen PM, Danielsen F, Jacobsen SK, Vikstrøm T. Fair concordance between Google Trends and Danish ornithologists in the assessment of temporal trends in Danish bird populations highlights the informational value of big data. Environ Monit Assess 2024; 196:276. [PMID: 38366261 PMCID: PMC10873222 DOI: 10.1007/s10661-024-12439-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/03/2024] [Indexed: 02/18/2024]
Abstract
The ongoing depletion of natural systems and associated biodiversity decline is of growing international concern. Climate change is expected to exacerbate anthropogenic impacts on wild populations. The scale of impact on ecosystems and ecosystem services will be determined by the impact on a multitude of species and functional groups, which due to their biology and numbers are difficult to monitor. The IPCC has argued that surveillance or monitoring is critical and proposed that monitoring systems should be developed, which not only track developments but also function as "early warning systems." Human populations are already generating large continuous datasets on multiple taxonomic groups through internet searches. These time series could in principle add substantially to current monitoring if they reflect true changes in the natural world. We here examined whether information on internet search frequencies delivered by the Danish population and captured by Google Trends (GT) appropriately informs on population trends in 106 common Danish bird species. We compared the internet search activity with independent equivalent population trend assessments from the Danish Ornithological Society (BirdLife Denmark/DOF). We find a fair concordance between the GT trends and the assessments by DOF. A substantial agreement can be obtained by omitting species without clear temporal trends. Our findings suggest that population trend proxies from internet search frequencies can be used to supplement existing wildlife population monitoring and to ask questions about an array of ecological phenomena, which potentially can be integrated into an early warning system for biodiversity under climate change.
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Affiliation(s)
- Per M Jensen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.
| | | | - Stine K Jacobsen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Thomas Vikstrøm
- DOF/BirdLife Denmark, Vesterbrogade 140A, 1620, Copenhagen V, Denmark
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Mirian C, Thastrup M, Mathiasen R, Schmiegelow K, Olsen JV, Østergaard O. Mass spectrometry-based proteomics of cerebrospinal fluid in pediatric central nervous system malignancies: a systematic review with meta-analysis of individual patient data. Fluids Barriers CNS 2024; 21:14. [PMID: 38350915 PMCID: PMC10863112 DOI: 10.1186/s12987-024-00515-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 01/26/2024] [Indexed: 02/15/2024] Open
Abstract
BACKGROUND The cerebrospinal fluid (CSF) proteome could offer important insights into central nervous system (CNS) malignancies. To advance proteomic research in pediatric CNS cancer, the current study aims to (1) evaluate past mass spectrometry-based workflows and (2) synthesize previous CSF proteomic data, focusing on both qualitative summaries and quantitative re-analysis. MAIN: In our analysis of 11 studies investigating the CSF proteome in pediatric patients with acute lymphoblastic leukemia (ALL) or primary brain tumors, we observed significant methodological variability. This variability negatively affects comparative analysis of the included studies, as per GRADE criteria for quality of evidence. The qualitative summaries covered 161 patients and 134 non-tumor controls, while the application of validation cohort varied among the studies. The quantitative re-analysis comprised 15 B-ALL vs 6 "healthy" controls and 15 medulloblastoma patients vs 22 non-tumor controls. Certain CSF proteins were identified as potential indicators of specific malignancies or stages of neurotoxicity during chemotherapy, yet definitive conclusions were impeded by inconsistent data. There were no proteins with statistically significant differences when comparing cases versus controls that were corroborated across studies where quantitative reanalysis was feasible. From a gene ontology enrichment, we observed that age disparities between unmatched case and controls may mislead to protein correlations more indicative of age-related CNS developmental stages rather than neuro-oncological disease. Despite efforts to batch correct (HarmonizR) and impute missing values, merging of dataset proved unfeasible and thereby limited meaningful data integration across different studies. CONCLUSION Infrequent publications on rare pediatric cancer entities, which often involve small sample sizes, are inherently prone to result in heterogeneous studies-particularly when conducted within a rapidly evolving field like proteomics. As a result, obtaining clear evidence, such as CSF proteome biomarkers for CNS dissemination or early-stage neurotoxicity, is currently impractical. Our general recommendations comprise the need for standardized methodologies, collaborative efforts, and improved data sharing in pediatric CNS malignancy research. We specifically emphasize the possible importance of considering natural age-related variations in CSF due to different CNS development stages when matching cases and controls in future studies.
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Affiliation(s)
- Christian Mirian
- Department of Paediatrics and Adolescent Medicine, Rigshospitalet, Copenhagen, Denmark.
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Maria Thastrup
- Department of Paediatrics and Adolescent Medicine, Rigshospitalet, Copenhagen, Denmark
| | - René Mathiasen
- Department of Paediatrics and Adolescent Medicine, Rigshospitalet, Copenhagen, Denmark
| | - Kjeld Schmiegelow
- Department of Paediatrics and Adolescent Medicine, Rigshospitalet, Copenhagen, Denmark
- Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Jesper Velgaard Olsen
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ole Østergaard
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Guerrero E, Andreasson K, Larsen L, Buus N, Skovgaard Larsen JL, Krogh J, Thastum R, Lindberg L, Lindblad K, Erlangsen A, Nordentoft M. Zero Self-Harm app: a mobile phone application to reduce non-suicidal self-injury-study protocol for a randomized controlled trial. Trials 2024; 25:116. [PMID: 38341590 PMCID: PMC10859016 DOI: 10.1186/s13063-024-07932-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/16/2024] [Indexed: 02/12/2024] Open
Abstract
BACKGROUND Non-suicidal self-injury (NSSI) is a growing healthcare problem. Individuals with NSSI have an increased risk of suicidality. Due to stigma, they may self-injure in secret, which means they might not seek help until events have escalated to include suicidal ideation or a mental disorder. Interventions delivered via mobile phone applications (apps) have been linked to reductions in self-injury. This protocol outlines a trial, which examines whether the Zero Self-Harm intervention, consisting of an app for people with NSSI, can reduce the number of NSSI episodes, suicide ideation, and depressive symptoms. METHODS The trial will be conducted as a 6-month 2-arm, parallel-group, multicentre, pragmatic, randomized clinical superiority trial. The intervention group will receive the app and instructions on how to use it, while the control group will be allocated to a waitlist and allowed to download the app after 6 months. After inclusion, participants will be asked to complete questionnaires at baseline, 3 months, and 6 months. The primary outcome is the number of NSSI episodes during the preceding month, as measured at the 6 months follow-up with the Deliberate Self-Harm Inventory. A total of 280 participants, 140 in each arm, will be included. DISCUSSION This trial will assess the effectiveness of the Zero Self-Harm intervention to reduce the number of NSSI episodes. If effective, the app will have the potential to support a large group of people with NSSI. Considering the stigma related to NSSI, the fact that the app may be used in private and anonymously might make it an appealing and acceptable option for support. The app was developed in collaboration with people with lived experiences related to current and/or previous NSSI. As a result of this, the app focuses on minimizing harm, rather than stopping NSSI. This might enhance its utilization. TRIAL REGISTRATION ClinicalTrials.gov NCT04463654 . Registered on 7 June 2020.
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Affiliation(s)
- Evelyn Guerrero
- Psychiatric Centre North Zealand, University Hospital of Hillerød, Dyrehavevej 48, 3400, Hillerød, Denmark
- Danish Research Institute for Suicide Prevention (DRISP), Mental Health Centre Copenhagen, Gentofte hospitalsvej 15, 4th floor, 2900, Hellerup, Denmark
| | - Kate Andreasson
- Psychiatric Centre North Zealand, University Hospital of Hillerød, Dyrehavevej 48, 3400, Hillerød, Denmark.
- Danish Research Institute for Suicide Prevention (DRISP), Mental Health Centre Copenhagen, Gentofte hospitalsvej 15, 4th floor, 2900, Hellerup, Denmark.
| | - Lene Larsen
- Psychiatric Centre North Zealand, University Hospital of Hillerød, Dyrehavevej 48, 3400, Hillerød, Denmark
| | - Niels Buus
- Department of Public Health, Aarhus University, Bartholins Allé 2, 8000, Aarhus C., Denmark
- Faculty of Medicine, Nursing, and Health Sciences, Monash University, Wellington Road, Clayton, 3800, Australia
| | - Jette Louise Skovgaard Larsen
- Danish Research Institute for Suicide Prevention (DRISP), Mental Health Centre Copenhagen, Gentofte hospitalsvej 15, 4th floor, 2900, Hellerup, Denmark
| | - Jesper Krogh
- Mental Health Centre Copenhagen, Gentofte hospitalsvej 15, 4th floor, 2900, Hellerup, Denmark
| | - Rasmus Thastum
- Children's Rights National Association, Trekronergade 26, 2500, Valby, Denmark
| | - Lone Lindberg
- Psykiatrisk Praksis, Arresødalsvej 79, 3300, Frederiksværk, Denmark
| | - Katrine Lindblad
- Centre of Eating Disorders and Self-Harm (VIOSS), Krumtappen 2, 2500, Valby, Denmark
| | - Annette Erlangsen
- Mental Health Centre Copenhagen, Gentofte hospitalsvej 15, 4th floor, 2900, Hellerup, Denmark
- Department of Public Health, Aarhus University, Bartholins Allé 2, 8000, Aarhus C., Denmark
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Hampton House 624 N. Broadway 8th floor, Baltimore, MD, 21205, USA
- Center of Mental Health Research, Australian National University, Building 63, Canberra, ACT, 2601, Australia
| | - Merete Nordentoft
- Mental Health Centre Copenhagen, Gentofte hospitalsvej 15, 4th floor, 2900, Hellerup, Denmark
- Danish Research Institute for Suicide Prevention (DRISP), Mental Health Centre Copenhagen, Gentofte hospitalsvej 15, 4th floor, 2900, Hellerup, Denmark
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Pedersen TR, Bach MBT, Stougaard CL, Gredal H, Rusbridge C, Finnerup NB, Berendt M. Clinical predictors of syringomyelia in Cavalier King Charles Spaniels with chiari-like malformation based on owners' observations. Acta Vet Scand 2024; 66:5. [PMID: 38331821 PMCID: PMC10851586 DOI: 10.1186/s13028-024-00725-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/17/2024] [Indexed: 02/10/2024] Open
Abstract
BACKGROUND Syringomyelia (SM) is a prevalent inherited developmental condition in Cavalier King Charles Spaniels (CKCSs) with Chiari-like malformation (CM), accompanied by a variety of clinical manifestations, including signs of neuropathic pain. Magnetic resonance imaging (MRI) is the gold standard in SM diagnosis. However, it is desirable to establish clinical predictors that can identify CKCSs with a large clinical syrinx that needs treatment, as some owners cannot afford or lack access to MRI. The aims of the study were to investigate owner-reported clinical signs of SM and clinical predictors of a large clinical syrinx, using predictive values of significant signs, individually and in combinations. Eighty-nine CKCSs participated in this retrospective study. Based on MRI diagnosis, dogs were distributed into three groups: CM without syrinx or with a maximum transverse width < 2 mm (n = 13), CM with small syrinx 2.00-3.99 mm (n = 26) and CM with large syrinx ≥4 mm (n = 50). A structured investigator-owner interview using a standardized questionnaire was used to collect data regarding clinical signs of CM and SM. The statistical tests Pearson's chi-square, Fisher's Exact and Spearman's rank order were used to assess the difference in owner-reported signs between groups. For signs with significant differences, positive and negative predictive values (PPV and NPV) were calculated. RESULTS Following clinical signs were reported significantly more frequent in dogs with a large syrinx: phantom scratching, bilateral scratching of the neck or shoulder, aversion when that area is touched, or exacerbation of clinical signs when the dog is emotionally aroused. Each individual sign had a high PPV, indicative of a large clinical syrinx. The PPV increased further when the signs phantom scratching, aversion to touch to the head, neck or shoulder, and a preferred head posture during sleep were present in combination. CONCLUSIONS Specific clinical signs can be used individually and in combination as clinical predictors of a large clinical syrinx in CKCSs with CM and SM. General practitioners can utilize this information to identify CKCSs with a large syrinx to initiate necessary treatment. This is particularly useful in cases where access to or affordability of an MRI diagnosis is limited.
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Affiliation(s)
- Tenna Remler Pedersen
- Department of Clinical Veterinary Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, C DK-1870, Frederiksberg, Denmark.
| | - Maiken Bayer Thode Bach
- Department of Clinical Veterinary Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, C DK-1870, Frederiksberg, Denmark
| | - Camilla Løkke Stougaard
- Department of Clinical Veterinary Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, C DK-1870, Frederiksberg, Denmark
| | - Hanne Gredal
- Department of Clinical Veterinary Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, C DK-1870, Frederiksberg, Denmark
| | - Clare Rusbridge
- Department of Clinical Sciences, School of Veterinary Medicine, University of Surrey, Daphne Jackson Rd, GU2 7AL, Guildford, Great Britain
| | - Nanna Brix Finnerup
- The Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 165, 8200, Aarhus N, Denmark
| | - Mette Berendt
- Department of Clinical Veterinary Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, C DK-1870, Frederiksberg, Denmark
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Eriksen EØ, Sejersen MF, Pedersen KS. The cotton swab method: an accurate and less invasive way to assess fecal consistency in weaned pigs. BMC Vet Res 2024; 20:47. [PMID: 38310282 PMCID: PMC10837864 DOI: 10.1186/s12917-024-03888-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 01/17/2024] [Indexed: 02/05/2024] Open
Abstract
BACKGROUND Researchers and pig veterinarians are interested in assessing pigs' fecal consistency. This study developed a standardized protocol and scale for the cotton swab method, which is a way of assessing the fecal consistency in pigs. The accuracy of the cotton swab method was evaluated in weaned pigs using fecal dry-matter analysis as a golden standard. The study also proposed fecal dry-matter percentage thresholds for the categorization of fecal consistency on a four-point scale. RESULTS The thresholds of 10.3%, 16.6%, and 21.9% fecal dry-matter were suggested for categorization of the consistency of fecal samples on a four-point scale. The accuracy of the cotton swab method was high. The agreement to the four-point fecal consistency score derived from the fecal dry-matter percentage was almost perfect (weighted Gwet's agreement coefficient = 0.87 [95% confidence interval: 0.84; 0.91]). The cotton swab method had a sensitivity of 85.0% (95% confidence interval: 76.5; 91.4) and a specificity of 95.2% (95% confidence interval: 92.0; 97.3) when used to diagnose whether pigs had diarrhea or not. For non-diarrheic pigs, the method almost always (n = 287/289) required less handling than the collection of a fecal sample by digital rectal manipulation. CONCLUSION The cotton swab method is an accurate way to assess fecal consistency in pigs, both on a four-point scale and as a dichotomous diarrhea score. The method is quick to perform and less invasive than methods relying on the collection of fecal samples. New fecal dry-matter thresholds between feces of different consistencies were proposed.
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Affiliation(s)
- Esben Østergaard Eriksen
- Department of Veterinary and Animal Sciences, Section for Production Nutrition and Health, University of Copenhagen, Grønnegårdsvej 2, 1870, Frederiksberg C, Denmark.
- The Faculty of Veterinary Medicine, Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, Elizabeth Stephansens vei 15, 1433, Ås, Norway.
| | - Martin Friis Sejersen
- Department of Veterinary and Animal Sciences, Section for Production Nutrition and Health, University of Copenhagen, Grønnegårdsvej 2, 1870, Frederiksberg C, Denmark
| | - Ken Steen Pedersen
- Department of Veterinary and Animal Sciences, Section for Production Nutrition and Health, University of Copenhagen, Grønnegårdsvej 2, 1870, Frederiksberg C, Denmark
- Ø-Vet, Køberupvej 33, 4700, Næstved, Denmark
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Rojas-Concha L, Hansen MB, Groenvold M. Symptoms and problems reported by patients with non-cancer diseases through open-ended questions in specialist palliative care: a national register-based study. Support Care Cancer 2024; 32:141. [PMID: 38305835 PMCID: PMC10837258 DOI: 10.1007/s00520-024-08345-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 01/25/2024] [Indexed: 02/03/2024]
Abstract
PURPOSE Since 2010, a comprehensive symptom/problem (S/P) assessment has been carried out in Danish specialist palliative care using the EORTC QLQ-C15-PAL questionnaire and the open-ended "Write In three Symptoms/Problems" (WISP) instrument. On WISP patients can report up to three S/Ps not included in the EORTC QLQ-C15-PAL. However, little is known about which S/Ps patients with non-cancer diseases report using WISP. Therefore, we investigated the prevalence and severity of S/Ps reported on WISP by non-cancer patients in specialist palliative care and compared these S/Ps with those previously reported by cancer patients. METHODS This register-based study collected data from the Danish Palliative Care Database. We included adult patients with non-cancer diseases answering the EORTC QLQ-C15-PAL at admittance to specialist palliative care between 2016 and 2021. WISP responses were qualitatively categorized, and their prevalence and severity calculated. RESULTS Of the 2323 patients with non-cancer diseases answering the EORTC QLQ-C15-PAL, 812 (34.9%) reported at least one S/P using WISP. A total of 1340 S/Ps were reported on WISP, of which 56.7% were not included in the EORTC QLQ-C15-PAL (i.e., were new). Edema, existential problems, dizziness, cough, and dysphagia were the most prevalent new S/Ps. Overall, 88.7% of the S/Ps were scored as moderate-severe. The prevalence of S/Ps reported on WISP did not significantly differ between cancer and non-cancer patients, except for existential problems, dysphagia, myoclonus, speaking problems, sweats, and vomiting. CONCLUSION The similarities and differences in the prevalence of the most common S/Ps reported on WISP confirm that WISP improves symptom assessment regardless of patient diagnosis.
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Affiliation(s)
- Leslye Rojas-Concha
- Palliative Care Research Unit, Department of Geriatrics and Palliative Medicine GP, Bispebjerg and Frederiksberg Hospitals, University of Copenhagen, Bispebjerg Bakke 23, DK-2400, Copenhagen, NV, Denmark.
| | - Maiken Bang Hansen
- Palliative Care Research Unit, Department of Geriatrics and Palliative Medicine GP, Bispebjerg and Frederiksberg Hospitals, University of Copenhagen, Bispebjerg Bakke 23, DK-2400, Copenhagen, NV, Denmark
| | - Mogens Groenvold
- Palliative Care Research Unit, Department of Geriatrics and Palliative Medicine GP, Bispebjerg and Frederiksberg Hospitals, University of Copenhagen, Bispebjerg Bakke 23, DK-2400, Copenhagen, NV, Denmark
- Section for Health Services Research, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
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Ekström K, Jensen MRJ, Holmvang L, Joshi FR, Iversen AZ, Madsen PL, Olsen NT, Pedersen F, Sørensen R, Tilsted HH, Engstrøm T, Lønborg J. Organized thrombus is a frequent underlying feature in culprit lesion morphology in non-ST-elevation myocardial infarction. A study using optical coherence tomography and magnetic resonance imaging. Int J Cardiovasc Imaging 2024; 40:441-449. [PMID: 38123868 PMCID: PMC10884357 DOI: 10.1007/s10554-023-03005-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 11/03/2023] [Indexed: 12/23/2023]
Abstract
The concept that the culprit lesion in non-ST segment elevation myocardial infarction (NSTEMI) is caused by sudden plaque rupture with acute thrombus formation has recently been challenged. While angiography is an old gold-standard for culprit identification it merely visualizes the lumen contour. Optical coherence tomography (OCT) provides a detailed view of culprit features. Combined with myocardial edema on cardiac magnetic resonance (CMR), indicating acute ischemia and thus culprit location, we aimed to characterize culprit lesions using OCT. Patients with NSTEMI referred for angiography were prospectively enrolled. OCT was performed on angiographic stenoses ≥50% and on operator-suspected culprit lesions. Hierarchical OCT-culprit identifiers were defined in case of multiple unstable lesions, including OCT-defined thrombus age. An OCT-based definition of an organizing thrombus as corresponding to histological early healing stage was introduced. Lesions were classified as OCT-culprit or non-culprit, and characteristics compared. CMR was performed in a subset of patients. We included 65 patients with 97 lesions, of which 49 patients (75%) had 53 (54%) OCT-culprit lesions. The most common OCT-culprit identifiers were the presence of acute (66%) and organizing thrombus (19%). Plaque rupture was visible in 45% of OCT-culprit lesions. CMR performed in 38 patients revealed myocardial oedema in the corresponding territories of 67% of acute thrombi and 50% of organizing thrombi. A culprit lesion was identified by OCT in 75% patients with NSTEMI. Acute thrombus was the most frequent feature followed by organizing thrombus. Applying specific OCT-criteria to identify the culprit could prove valuable in ambiguous cases.
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Affiliation(s)
- Kathrine Ekström
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, DK-2100, Denmark.
| | - Maria Radu Juul Jensen
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, DK-2100, Denmark
| | - Lene Holmvang
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, DK-2100, Denmark
| | - Francis Richard Joshi
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, DK-2100, Denmark
| | - Allan Zeeberg Iversen
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Per Lav Madsen
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Niels Thue Olsen
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Frants Pedersen
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Rikke Sørensen
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Hans-Henrik Tilsted
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Thomas Engstrøm
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, DK-2100, Denmark.
| | - Jacob Lønborg
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, DK-2100, Denmark
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45
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Nielsen OH, Pardi DS. Diagnosis and Pharmacological Management of Microscopic Colitis in Geriatric Care. Drugs Aging 2024; 41:113-123. [PMID: 38231321 PMCID: PMC10869377 DOI: 10.1007/s40266-023-01094-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/28/2023] [Indexed: 01/18/2024]
Abstract
Microscopic colitis, a diagnosis under the umbrella term of inflammatory bowel disease, is a prevalent cause of watery diarrhea, often with symptoms of urgency and bloating, typically observed in older adults aged ≥ 60 years. Its incidence has been reported to exceed those of ulcerative colitis and Crohn's disease in some geographical areas. Although nonpathognomonic endoscopic abnormalities, including changes of the vascular mucosal pattern; mucosal erythema; edema; nodularity; or mucosal defects, e.g., "cat scratches" have been reported, a colonoscopy is typically macroscopically normal. As reliable biomarkers are unavailable, colonoscopy using random biopsies from various parts of the colon is compulsory. Based on the histological examination under a microscope, the disease is divided into collagenous (with a thickened subepithelial collagenous band) and lymphocytic (with intraepithelial lymphocytosis) colitis, although incomplete forms exist. In routine clinical settings, the disease has a high risk of being misdiagnosed as irritable bowel syndrome or even overlooked. Therefore, healthcare providers should be familiar with clinical features and rational management strategies. A 6-8-week oral budesonide treatment course (9 mg/day) is considered the first-line therapy, but patients often experience relapse when discontinued, or might become intolerant, dependent, or even fail to respond. Consequently, other therapeutic options (e.g., bismuth subsalicylate, biologics, loperamide, bile acid sequestrants, and thiopurines) recommended by available guidelines may be prescribed. Herein, clinically meaningful data is provided based on the latest evidence that may aid in reaching a diagnosis and establishing rational therapy in geriatric care to control symptoms and enhance the quality of life for those affected.
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Affiliation(s)
- Ole Haagen Nielsen
- Department of Gastroenterology D112, Herlev Hospital, University of Copenhagen, Borgmester Ib Juuls Vej 1, 2730, Herlev, Denmark.
| | - Darrell S Pardi
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
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Molin J, Hartmann J, Pærregaard MM, Thygesen CB, Sillesen AS, Raja AA, Vøgg ROB, Iversen KK, Bundgaard H, Christensen AH. The Neonatal QRS Complex and Its Association with Left Ventricular Mass. Pediatr Cardiol 2024; 45:248-256. [PMID: 38151605 PMCID: PMC10822000 DOI: 10.1007/s00246-023-03361-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 11/20/2023] [Indexed: 12/29/2023]
Abstract
To evaluate QRS complex features during the first month of life and the association with echocardiographic measurements of left ventricular mass in neonates. Prospective cohort study of neonates with electrocardiography (ECG) and echocardiography performed during the first month of life. Left ventricular mass index (LVMI) was determined by echocardiography and the correlation with electrocardiographic markers of LVMI outliers (≥ 98th percentile) were analyzed. We included 17,450 neonates (52% boys; median age at examination 11 days) and found an increase in median QRS duration and LVMI during the first month of life (54 vs. 56 ms and 24.7 vs. 28.6 g/m2 at days 0-4 and 25-30, respectively; both p < 0.001). All investigated ECG features (QRS duration, QRS area in V1/V6, maximum amplitudes of S-V1/R-V6, and the Sokolow-Lyon voltage product) showed no to low correlation with LVMI, resulting in low sensitivities (0-9.0%), but high specificities (97.2-98.1%), and area under the curve values close to the identity line (0.49-0.61) for identifying LVMI outliers. Adjustment of outlier definition for LVMI and threshold for QRS features had no significant effect on sensitivity. We present reference values for QRS complex features and their association with LVMI in neonates from a large, unselected, population-based cohort. The QRS complex gradually evolved during the first month of life but had a low correlation with LVMI. Our results indicate a poor diagnostic value of using ECG features to identify LVMI outliers in neonates.Trial Registry Copenhagen Baby Heart, NCT02753348, https://clinicaltri-als.gov/ct2/show/NCT02753348?cond=Copenhagen+Baby+Heart&draw=2&rank=1 , deidentified individual participant data will not be made available.
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Affiliation(s)
- Julie Molin
- Department of Cardiology, Herlev-Gentofte Hospital, Copenhagen University Hospital, Copenhagen, Denmark
| | - Joachim Hartmann
- Department of Cardiology, Herlev-Gentofte Hospital, Copenhagen University Hospital, Copenhagen, Denmark
| | - Maria Munk Pærregaard
- Department of Cardiology, Herlev-Gentofte Hospital, Copenhagen University Hospital, Copenhagen, Denmark
| | - Caroline Boye Thygesen
- Department of Cardiology, Herlev-Gentofte Hospital, Copenhagen University Hospital, Copenhagen, Denmark
| | - Anne-Sophie Sillesen
- Department of Cardiology, Herlev-Gentofte Hospital, Copenhagen University Hospital, Copenhagen, Denmark
| | - Anna Axelsson Raja
- The Capital Regions Unit for Inherited Cardiac Diseases, Department of Cardiology, The Heart Center, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | | | - Kasper Karmark Iversen
- Department of Cardiology, Herlev-Gentofte Hospital, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Henning Bundgaard
- The Capital Regions Unit for Inherited Cardiac Diseases, Department of Cardiology, The Heart Center, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Alex Hørby Christensen
- Department of Cardiology, Herlev-Gentofte Hospital, Copenhagen University Hospital, Copenhagen, Denmark.
- The Capital Regions Unit for Inherited Cardiac Diseases, Department of Cardiology, The Heart Center, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
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47
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Bakhtiari A, Benedek K, Law I, Fagerlund B, Mortensen EL, Osler M, Lauritzen M, Larsson HBW, Vestergaard MB. Early cerebral amyloid-β accumulation and hypermetabolism are associated with subtle cognitive deficits before accelerated cerebral atrophy. GeroScience 2024; 46:769-782. [PMID: 38102439 PMCID: PMC10828321 DOI: 10.1007/s11357-023-01031-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 12/02/2023] [Indexed: 12/17/2023] Open
Abstract
AIMS Alzheimer's disease (AD) is characterized by the accumulation of amyloid beta (Aβ) in the brain. The deposition of Aβ is believed to initiate a detrimental cascade, including cerebral hypometabolism, accelerated brain atrophy, and cognitive problems-ultimately resulting in AD. However, the timing and causality of the cascade resulting in AD are not yet fully established. Therefore, we examined whether early Aβ accumulation affects cerebral glucose metabolism, atrophy rate, and age-related cognitive decline before the onset of neurodegenerative disease. METHODS Participants from the Metropolit 1953 Danish Male Birth Cohort underwent brain positron emission tomography (PET) imaging using the radiotracers [11C]Pittsburgh Compound-B (PiB) (N = 70) and [18F]Fluorodeoxyglucose (FDG) (N = 76) to assess cerebral Aβ accumulation and glucose metabolism, respectively. The atrophy rate was calculated from anatomical magnetic resonance imaging (MRI) scans conducted presently and 10 years ago. Cognitive decline was examined from neurophysiological tests conducted presently and ten or 5 years ago. RESULTS Higher Aβ accumulation in AD-critical brain regions correlated with greater visual memory decline (p = 0.023). Aβ accumulation did not correlate with brain atrophy rates. Increased cerebral glucose metabolism in AD-susceptible regions correlated with worse verbal memory performance (p = 0.040). CONCLUSIONS Aβ accumulation in known AD-related areas was associated with subtle cognitive deficits. The association was observed before hypometabolism or accelerated brain atrophy, suggesting that Aβ accumulation is involved early in age-related cognitive dysfunction. The association between hypermetabolism and worse memory performance may be due to early compensatory mechanisms adapting for malfunctioning neurons by increasing metabolism.
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Affiliation(s)
- Aftab Bakhtiari
- Functional Imaging Unit, Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet Glostrup, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
- Department of Clinical Neurophysiology, The Neuroscience Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
- Faculty of Health and Medical Sciences, Department of Neuroscience, University of Copenhagen, Copenhagen, Denmark.
- Center for Healthy Aging, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Krisztina Benedek
- Department of Neurology, Neurophysiology, Zealand University Hospital, Roskilde, Denmark
| | - Ian Law
- Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet, , University of Copenhagen, Copenhagen, Denmark
| | - Birgitte Fagerlund
- Department of Psychology, University of Copenhagen, Copenhagen, Denmark
- Child and Adolescent Mental Health Center, Copenhagen University Hospital - Mental Health Services CPH, Copenhagen, Denmark
| | | | - Merete Osler
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
- Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
| | - Martin Lauritzen
- Department of Clinical Neurophysiology, The Neuroscience Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Faculty of Health and Medical Sciences, Department of Neuroscience, University of Copenhagen, Copenhagen, Denmark
- Center for Healthy Aging, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Henrik B W Larsson
- Functional Imaging Unit, Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet Glostrup, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Mark B Vestergaard
- Functional Imaging Unit, Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet Glostrup, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
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48
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Bagger FO, Borgwardt L, Jespersen AS, Hansen AR, Bertelsen B, Kodama M, Nielsen FC. Whole genome sequencing in clinical practice. BMC Med Genomics 2024; 17:39. [PMID: 38287327 PMCID: PMC10823711 DOI: 10.1186/s12920-024-01795-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 01/01/2024] [Indexed: 01/31/2024] Open
Abstract
Whole genome sequencing (WGS) is becoming the preferred method for molecular genetic diagnosis of rare and unknown diseases and for identification of actionable cancer drivers. Compared to other molecular genetic methods, WGS captures most genomic variation and eliminates the need for sequential genetic testing. Whereas, the laboratory requirements are similar to conventional molecular genetics, the amount of data is large and WGS requires a comprehensive computational and storage infrastructure in order to facilitate data processing within a clinically relevant timeframe. The output of a single WGS analyses is roughly 5 MIO variants and data interpretation involves specialized staff collaborating with the clinical specialists in order to provide standard of care reports. Although the field is continuously refining the standards for variant classification, there are still unresolved issues associated with the clinical application. The review provides an overview of WGS in clinical practice - describing the technology and current applications as well as challenges connected with data processing, interpretation and clinical reporting.
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Affiliation(s)
- Frederik Otzen Bagger
- Center for Genomic Medicine, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Line Borgwardt
- Center for Genomic Medicine, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Andreas Sand Jespersen
- Center for Genomic Medicine, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Anna Reimer Hansen
- Center for Genomic Medicine, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Birgitte Bertelsen
- Center for Genomic Medicine, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Miyako Kodama
- Center for Genomic Medicine, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Finn Cilius Nielsen
- Center for Genomic Medicine, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
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49
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Wardman JH, Andreassen SN, Toft-Bertelsen TL, Jensen MN, Wilhjelm JE, Styrishave B, Hamann S, Heegaard S, Sinclair AJ, MacAulay N. CSF hyperdynamics in rats mimicking the obesity and androgen excess characteristic of patients with idiopathic intracranial hypertension. Fluids Barriers CNS 2024; 21:10. [PMID: 38273331 PMCID: PMC10810013 DOI: 10.1186/s12987-024-00511-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 01/05/2024] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND Idiopathic intracranial hypertension (IIH) is a syndrome exhibiting elevated intracranial pressure (ICP), visual disturbances, and severe headache. IIH primarily affects young obese women, though it can occur in individuals of any age, BMI, and sex. IIH is characterized by systemic metabolic dysregulation with a profile of increased androgen hormones. However, the contribution of obesity/hormonal perturbations to cerebrospinal fluid (CSF) dynamics remains unresolved. METHODS We employed obese female Zucker rats and adjuvant testosterone to reveal IIH causal drivers. ICP and CSF dynamics were determined with in vivo experimentation and magnetic resonance imaging, testosterone levels assessed with mass spectrometry, and choroid plexus function revealed with transcriptomics. RESULTS Obese rats had undisturbed CSF testosterone levels and no changes in ICP or CSF dynamics. Adjuvant testosterone treatment of obese rats elevated the CSF secretion rate, although with no effect on the ICP, due to elevated CSF drainage capacity of these rats. CONCLUSIONS Obesity in itself therefore does not suffice to recapitulate the IIH symptoms in rats, but modulation of CSF dynamics appears with adjuvant testosterone treatment, which mimics the androgen excess observed in female IIH patients. Obesity-induced androgen dysregulation may thus contribute to the disease mechanism of IIH and could potentially serve as a future therapeutic target.
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Affiliation(s)
- Jonathan H Wardman
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3, Copenhagen, DK-2200, Denmark
| | - Søren Norge Andreassen
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3, Copenhagen, DK-2200, Denmark
| | - Trine L Toft-Bertelsen
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3, Copenhagen, DK-2200, Denmark
| | - Mette Nyholm Jensen
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3, Copenhagen, DK-2200, Denmark
| | - Jens E Wilhjelm
- Department of Neurophysiology, Rigshospitalet, Copenhagen, Denmark
- Department of Health Technology, Technical University of Denmark, Copenhagen, Denmark
| | - Bjarne Styrishave
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Steffen Hamann
- Department of Ophthalmology, Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Steffen Heegaard
- Department of Ophthalmology, Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Alexandra J Sinclair
- Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Nanna MacAulay
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3, Copenhagen, DK-2200, Denmark.
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50
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Langthaler K, Jones CR, Saaby L, Bundgaard C, Brodin B. Application of a new MDCKII-MDR1 cell model to measure the extent of drug distribution in vitro at equilibrium for prediction of in vivo unbound brain-to-plasma drug distribution. Fluids Barriers CNS 2024; 21:11. [PMID: 38273301 PMCID: PMC10809502 DOI: 10.1186/s12987-023-00495-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/24/2023] [Indexed: 01/27/2024] Open
Abstract
INTRO Reliable estimates of drug uptake from blood to brain parenchyma are crucial in CNS drug discovery and development. While in vivo Kp,uu,brain estimates are the gold standard for investigating brain drug disposition, animal usage is a limitation to high throughput application. This study investigates an in vitro model using P-gp expressing MDCKII-MDR1 cells for predicting in vivo brain drug penetration. METHODS In vitro equilibrium distribution studies were conducted in apical and basolateral solutions with high protein content to estimate Kp,brain and Kp,uu,brain values. The correlation between in vitro and in vivo Kp,brain values for a set of compounds was examined. RESULTS We observed a good correlation between in vitro and in vivo Kp,brain values (R2 = 0.69, Slope: 1.6), indicating that the in vitro model could predict in vivo drug brain penetration. The 'unilateral (Uni-L)' in vitro setup correctly classified 5 out of 5 unrestricted compounds and 3 out of 5 restricted compounds. Possible reasons for the observed disparities for some compounds have been discussed, such as difference in transport areas between in vitro and in vivo settings and effect of pH changes. CONCLUSION The in vitro assay setup developed in this study holds promise for predicting in vivo drug brain penetration in CNS drug discovery. The correlation between in vitro and in vivo Kp,brain values, underscores that the model may have potential for early-stage screening. With minor refinements, this in vitro approach could reduce the reliance on in vivo experiments, accelerating the pace of CNS drug discovery and promoting a more ethical research approach.
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Affiliation(s)
- Kristine Langthaler
- Translational DMPK, H. Lundbeck A/S, and CNS Drug Delivery and Barrier Modelling, University of Copenhagen, Ottiliavej 9, Valby, 2500, Copenhagen, Denmark.
| | - Christopher R Jones
- PKPD Modelling & Simulation, H. Lundbeck A/S, Ottiliavej 9, Valby, 2500, Copenhagen, Denmark
| | - Lasse Saaby
- Bioneer A/S and affiliated associate professor at CNS Drug Delivery and Barrier Modelling, Universitetsparken 2, 2100, Copenhagen, Denmark
| | | | - Birger Brodin
- CNS Drug Delivery and Barrier Modelling, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark
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