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Karlsson A, Jood K, Björkman-Burtscher IM, Rentzos A. Extended treatment in cerebral ischemia score 2c or 3 as goal of successful endovascular treatment is associated with clinical benefit. J Neuroradiol 2024; 51:190-195. [PMID: 37532125 DOI: 10.1016/j.neurad.2023.07.005] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/28/2023] [Accepted: 07/30/2023] [Indexed: 08/04/2023]
Abstract
BACKGROUND AND PURPOSE Successful reperfusion, defined as a modified treatment in cerebral ischemia (mTICI) score 2b or 3, is an important goal for endovascular treatment (EVT) of stroke. Recently, an extension of the mTICI score with an additional grade 2c indicating near-complete reperfusion (expanded TICI, eTICI) and a revised definition of success as eTICI 2c or 3 were proposed. We evaluate whether eTICI 2c translates into improved clinical outcome compared to eTICI 2b. MATERIAL AND METHODS Consecutive patients with large vessel occlusion in the anterior circulation who underwent EVT between December 2013 and December 2020 were included. Clinical outcome measures were favorable functional outcome at 90 days (modified Rankin Scale [mRS] scores 0 to 2 or return to pre-stroke mRS) and early neurological improvement (National Institutes of Health Stroke Scale [NIHSS] improvement ≥4 points or a score of 0-1 at 24 h). RESULTS Of 1282 included patients (median age 76, median NIHSS 16), reperfusion was classified as eTICI 2b in 410 (32%), eTICI 2c in 242 (19%) and eTICI 3 in 464 (36%). eTICI 2c differed significally from 2b with respect to early neurological improvement (aOR = 1.49, 95% CI = 1.01-2.19). No statistically significant difference in favorable functional outcome at 90 days was found (eTICI 2c vs 2b, aOR = 1.31, 95% CI = 0.88-2.00). CONCLUSION Our study indicates early clinical benefit at 24 h of achieving eTICI 2c compared to eTICI 2b, but no significant difference was seen in favorable functional outcome at 90 days. Our results support eTICI 2c and 3 as the goal of a successful thrombectomy but do not exclude eTICI 2b as an acceptable result.
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Affiliation(s)
- Adrian Karlsson
- Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden; Department of Radiology, Sahlgrenska University Hospital, Västra Götalandsregionen, Gothenburg, Sweden.
| | - Katarina Jood
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden; Department of Neurology, Sahlgrenska University Hospital, Västra Götalandsregionen, Gothenburg, Sweden
| | - Isabella M Björkman-Burtscher
- Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden; Department of Radiology, Sahlgrenska University Hospital, Västra Götalandsregionen, Gothenburg, Sweden
| | - Alexandros Rentzos
- Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden; Department of Radiology, Section of diagnostic and interventional neuroradiology, Sahlgrenska University Hospital, Västra Götalandsregionen, Gothenburg, Sweden
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Hjalmarsson E, Hellkvist L, Karlsson A, Winquist O, Kumlien Georén S, Westin U, Cardell LO. A 5-Year Open-Label Follow-up of a Randomized Double-Blind Placebo-Controlled Trial of Intralymphatic Immunotherapy for Birch and Grass Allergy Reveals Long-term Beneficial Effects. J Investig Allergol Clin Immunol 2023; 33:362-372. [PMID: 37843385 DOI: 10.18176/jiaci.0832] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Intralymphatic immunotherapy (ILIT) is a novel, faster alternative to conventional allergen immunotherapy (AIT). Few previous studies have evaluated its long-term effects. The objective of the present study was to complete a 5-year follow-up of a randomized double-blind placebo-controlled trial of ILIT for a combination of birch and grass allergens. METHODS Fifty-eight patients with allergic rhinitis were treated with either placebo or a combination of ALK Alutard Birch and Grass 1000 SQ-U administered in 3 intralymphatic injections at 1-month intervals. A year after the vaccination, the symptoms induced by nasal provocation were significantly reduced. After 5-6 years, 20 out of 26 actively treated patients were followed up with a nasal provocation test (NPT) and seasonal registration of the combined symptom and medications score (CSMS), IgE and IgG4 levels in blood, and immunological markers in blood and lymph nodes and compared with 13 unvaccinated controls. RESULTS The reduction in the NPT response with ILIT at year 1 could not be convincingly reproduced at year 5. The new CSMS scores were markedly lower among the previously treated patients than among the control group. Furthermore, grass-specific IgG4 was increased, grass-specific IgE decreased, FcεR1 on basophils was reduced, and the fraction of memory T-cells in lymph nodes increased. CONCLUSION The combination of seasonal clinical data and immunological parameters supports the notion of a long-lasting effect of ILIT. These data support the concept of ILIT as a good alternative to traditional AIT in pollen-induced allergic rhinitis.
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Affiliation(s)
- E Hjalmarsson
- Division of ENT Diseases, Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - L Hellkvist
- Division of ENT Diseases, Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of ENT Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - A Karlsson
- Division of ENT Diseases, Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of ENT Diseases, Karolinska University Hospital, Stockholm, Sweden
| | | | - S Kumlien Georén
- Division of ENT Diseases, Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - U Westin
- Department of Otorhinolaryngology, Institute of Clinical Sciences, Skåne University Hospital, Lund, Sweden
| | - L O Cardell
- Division of ENT Diseases, Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of ENT Diseases, Karolinska University Hospital, Stockholm, Sweden
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3
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Samuelsson J, Rentzos A, Rawshani A, Karlsson A, Ståleby M, Nilsson D. Risk of de novo aneurysm formation in patients previously diagnosed with a ruptured or unruptured aneurysm: 18-year follow-up. Clin Neurol Neurosurg 2023; 233:107980. [PMID: 37717358 DOI: 10.1016/j.clineuro.2023.107980] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/19/2023]
Abstract
BACKGROUND Data on de novo aneurysm formation after treatment for intracranial aneurysms remains scarce. We studied the incidence of de novo aneurysm formation in patients who had undergone aneurysm treatment more than 18 years prior to follow-up. As it is a disease affecting a younger patient population more specific guidelines are needed when planning a follow-up regime. METHODS The rate of de novo aneurysm formation was assessed with Magnetic Resonance Angiography (MRA) follow-up >18 years after endovascular or microsurgical treatment for an intracranial aneurysm. Variables associated with de novo aneurysm formation were studied using logistic regression. Missing data were imputed using chained random forests. A data-driven model for the prediction of de novo aneurysm was created to calculate the relative variable importance of ten clinical features. RESULTS De novo aneurysms were identified in 11/81 (13.6 %) patients, of whom 1 was male, over a median follow-up of 20 years. Sex was the most important variable associated with de novo aneurysm formation. Regarding the development of de novo aneurysm, men displayed an odds ratio (OR) of 0.16 (0.01-0.97), compared with women. OR for mRS score 2 or more was 0.20 (95 % CI 0.01-1.34), and OR for smokers was 3.70 (0.54-31.18). Six out of 11 patients (54.5 %) needed treatment; 1 underwent endovascular treatment (EVT) and 5 underwent microsurgical treatment (MST). The overall annual de novo aneurysm formation rate was 0.92 %. CONCLUSIONS This study highlights the need for a longer follow-up imaging monitoring of patients that have previously undergone treatment for an intracranial aneurysm. These data are useful to take into consideration when planning a follow-up strategy.
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Affiliation(s)
- Jennifer Samuelsson
- Department of Clinical Neuroscience, Institute of Neurosciences and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Neurosurgery, Sahlgrenska University Hospital, Gothenburg, Sweden.
| | - Alexandros Rentzos
- Department of Radiology, Section of diagnostic and interventional neuroradiology, Sahlgrenska University Hospital, Region Vastra Gotaland, Gothenburg, Sweden; Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Araz Rawshani
- Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Adrian Karlsson
- Department of Radiology, Section of diagnostic and interventional neuroradiology, Sahlgrenska University Hospital, Region Vastra Gotaland, Gothenburg, Sweden; Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Marcus Ståleby
- Department of Radiology, Section of diagnostic and interventional neuroradiology, Sahlgrenska University Hospital, Region Vastra Gotaland, Gothenburg, Sweden; Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Daniel Nilsson
- Department of Clinical Neuroscience, Institute of Neurosciences and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Neurosurgery, Sahlgrenska University Hospital, Gothenburg, Sweden
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Ledderer L, Karlsson A, Stage C. Continuity of care in Danish peer-led patient online communities on social media. A survey study. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac131.294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Patients in the Danish healthcare system and other Western countries experience a lack of ‘continuity of care’ due to inadequate communication and sharing of clinical information. ‘Continuity of care’ is often defined as informational, managerial and relational failures. A lack of continuity is particularly problematic for patients with chronic conditions as they are often highly dependent on longitudinal and complex treatment processes. Some of these patients have formed self-organised groups on social media in order to share their personal experiences with the health care system and discuss health related problem with peers. The aim of this paper is to understand the role peer-led online communities (PLOC) play for patients with chronic conditions experiences of continuity of care.
Methods
The material consists of survey data from patients with chronic conditions participating in peer-led online communities on the experience of continuity of care in the Danish healthcare system. A link to the survey was posted in the public online community “Chronic Influencers” (Instagram 10,000 followers), and in the closed Facebook group “Chronic pain patients” (Facebook, 2,200 members). The questionnaire was posted three times between 10 and 30 March 2022.
Results
207 respondents answered all questions in the survey of which 95% were women. Most of them (62 %) were between 36 and 55 years. 37 % live with chronic conditions for more that 20 years. 72 % of the respondent experience lack of continuity with the healthcare system, often with regard to information or communication with health professionals and they look for peers’ advices or experiences in the online groups. 68 % felt recognized by the peers in the online community in another way than in the meeting with the healthcare system.
Conclusions
Patients use PLOC to find and exchange experiences from other patients with chronic conditions about their treatment and especially daily life with chronic conditions.
Key messages
• Patients participating in peer-led online communities provide online support and recognition to each other than that provided by the healthcare system.
• Patients use peer-led online communities to read about other patients’ experiences with chronic conditions and learn about their treatment and daily life.
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Affiliation(s)
- L Ledderer
- Institute of Public Health, Aarhus University , Aarhus, Denmark
| | - A Karlsson
- School of Communication and Culture, Aarhus University , Aarhus, Denmark
| | - C Stage
- School of Communication and Culture, Aarhus University , Aarhus, Denmark
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Broman N, Rantasärkkä K, Feuth T, Valtonen M, Waris M, Hohenthal U, Rintala E, Karlsson A, Marttila H, Peltola V, Vuorinen T, Oksi J. IL-6 and other biomarkers as predictors of severity in COVID-19. Ann Med 2021; 53:410-412. [PMID: 33305624 PMCID: PMC7935117 DOI: 10.1080/07853890.2020.1840621] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/05/2020] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE Cytokine release syndrome is suggested to be the most important mechanism triggering acute respiratory distress syndrome and end organ damage in COVID-19. The severity of disease may be measured by different biomarkers. METHODS We studied markers of inflammation and coagulation as recorded in 29 patients on admission to the hospital in order to identify markers of severe COVID-19 and need of ICU. RESULTS Patients who were eventually admitted to ICU displayed significantly higher serum levels of interleukin-6 (IL-6), C-reactive protein (CRP), and procalcitonin. No statistical differences were found between the groups in median levels of lymphocytes, D-dimer or ferritin. CONCLUSIONS IL-6 and CRP were the strongest predictors of severity in hospitalized patients with COVID-19.
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Affiliation(s)
- N. Broman
- Department of Infectious Diseases, Turku University Hospital, Turku, Finland
| | - K. Rantasärkkä
- Department of Clinical Microbiology, Turku University Hospital and Institute of Biomedicine, University of Turku, Turku, Finland
| | - T. Feuth
- Department of Pulmonary Diseases, Turku University Hospital and Department of Pulmonary Diseases and Clinical Allergology, University of Turku, Turku, Finland
| | - M. Valtonen
- Department of Anaesthesia and Intensive Care, Turku University Hospital, Turku, Finland
| | - M. Waris
- Department of Clinical Microbiology, Turku University Hospital and Institute of Biomedicine, University of Turku, Turku, Finland
| | - U. Hohenthal
- Department of Infectious Diseases, Turku University Hospital and University of Turku, Turku, Finland
| | - E. Rintala
- Department of Hospital Hygiene and Infection Control, Turku University Hospital, Turku, Finland
| | - A. Karlsson
- Auria Biobank, Turku University Hospital and University of Turku, Turku, Finland
| | - H. Marttila
- Department of Hospital Hygiene and Infection Control, Turku University Hospital, Turku, Finland
| | - V. Peltola
- Department of Paediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, Turku, Finland
| | - T. Vuorinen
- Department of Clinical Microbiology, Turku University Hospital and Institute of Biomedicine, University of Turku, Turku, Finland
| | - J. Oksi
- Department of Infectious Diseases, Turku University Hospital and University of Turku, Turku, Finland
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Knuutila J, Riihilä P, Karlsson A, Tukiainen M, Talve L, Nissinen L, Kähäri V. 266 Identification of metastatic primary cutaneous squamous cell carcinoma using artificial intelligence analysis of whole slide images. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Karlsson A, Ellonen A, Irjala H, Väliaho V, Mattila K, Nissi L, Kytö E, Kurki S, Ristamäki R, Vihinen P, Laitinen T, Ålgars A, Jyrkkiö S, Minn H, Heervä E. Impact of deep learning-determined smoking status on mortality of cancer patients: never too late to quit. ESMO Open 2021; 6:100175. [PMID: 34091262 PMCID: PMC8182259 DOI: 10.1016/j.esmoop.2021.100175] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 12/22/2022] Open
Abstract
Background Persistent smoking after cancer diagnosis is associated with increased overall mortality (OM) and cancer mortality (CM). According to the 2020 Surgeon General's report, smoking cessation may reduce CM but supporting evidence is not wide. Use of deep learning-based modeling that enables universal natural language processing of medical narratives to acquire population-based real-life smoking data may help overcome the challenge. We assessed the effect of smoking status and within-1-year smoking cessation on CM by an in-house adapted freely available language processing algorithm. Materials and methods This cross-sectional real-world study included 29 823 patients diagnosed with cancer in 2009-2018 in Southwest Finland. The medical narrative, International Classification of Diseases-10th edition codes, histology, cancer treatment records, and death certificates were combined. Over 162 000 sentences describing tobacco smoking behavior were analyzed with ULMFiT and BERT algorithms. Results The language model classified the smoking status of 23 031 patients. Recent quitters had reduced CM [hazard ratio (HR) 0.80 (0.74-0.87)] and OM [HR 0.78 (0.72-0.84)] compared to persistent smokers. Compared to never smokers, persistent smokers had increased CM in head and neck, gastro-esophageal, pancreatic, lung, prostate, and breast cancer and Hodgkin's lymphoma, irrespective of age, comorbidities, performance status, or presence of metastatic disease. Increased CM was also observed in smokers with colorectal cancer, men with melanoma or bladder cancer, and lymphoid and myeloid leukemia, but no longer independently of the abovementioned covariates. Specificity and sensitivity were 96%/96%, 98%/68%, and 88%/99% for never, former, and current smokers, respectively, being essentially the same with both models. Conclusions Deep learning can be used to classify large amounts of smoking data from the medical narrative with good accuracy. The results highlight the detrimental effects of persistent smoking in oncologic patients and emphasize that smoking cessation should always be an essential element of patient counseling. Deep learning/universal language modeling was used to extract smoking status of cancer patients. Good accuracy was observed. Those who continue smoking after cancer diagnosis had increased CM compared to never smokers. Recent within-1-year cessation reduced this mortality. Detrimental effects of smoking were observed in multiple types of early- and advanced-stage cancers, including the elderly. We conclude that smoking cessation support should always be included in cancer care.
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Affiliation(s)
- A Karlsson
- Auria Biobank, University of Turku and Turku University Hospital, Turku, Finland
| | - A Ellonen
- University of Turku, Turku, Finland; Department of Oncology, Turku University Hospital, Turku, Finland; FICAN West Cancer Centre, Turku, Finland
| | - H Irjala
- University of Turku, Turku, Finland; FICAN West Cancer Centre, Turku, Finland; Department of Otorhinolaryngology-Head and Neck Surgery, Turku University Hospital, Turku, Finland
| | - V Väliaho
- Department of Oncology, Turku University Hospital, Turku, Finland; FICAN West Cancer Centre, Turku, Finland
| | - K Mattila
- Department of Oncology, Turku University Hospital, Turku, Finland; FICAN West Cancer Centre, Turku, Finland
| | - L Nissi
- University of Turku, Turku, Finland; Department of Oncology, Turku University Hospital, Turku, Finland
| | - E Kytö
- University of Turku, Turku, Finland; FICAN West Cancer Centre, Turku, Finland; Department of Otorhinolaryngology-Head and Neck Surgery, Turku University Hospital, Turku, Finland
| | - S Kurki
- Auria Biobank, University of Turku and Turku University Hospital, Turku, Finland; University of Turku, Turku, Finland
| | - R Ristamäki
- Department of Oncology, Turku University Hospital, Turku, Finland; FICAN West Cancer Centre, Turku, Finland
| | - P Vihinen
- FICAN West Cancer Centre, Turku, Finland
| | - T Laitinen
- Hospital Administration, Tampere University Hospital, Tampere, Finland
| | - A Ålgars
- University of Turku, Turku, Finland; Department of Oncology, Turku University Hospital, Turku, Finland; FICAN West Cancer Centre, Turku, Finland
| | - S Jyrkkiö
- Department of Oncology, Turku University Hospital, Turku, Finland; FICAN West Cancer Centre, Turku, Finland
| | - H Minn
- University of Turku, Turku, Finland; Department of Oncology, Turku University Hospital, Turku, Finland; FICAN West Cancer Centre, Turku, Finland
| | - E Heervä
- University of Turku, Turku, Finland; Department of Oncology, Turku University Hospital, Turku, Finland; FICAN West Cancer Centre, Turku, Finland.
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Bunik VI, Aleshin VA, Zhou X, Krishnan S, Karlsson A. Regulation of Thiamine (Vitamin B1)-Dependent Metabolism in Mammals by p53. Biochemistry (Mosc) 2021; 85:801-807. [PMID: 33040724 DOI: 10.1134/s0006297920070081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Transcriptional factor p53 is a master regulator of energy metabolism. Energy metabolism strongly depends on thiamine (vitamin B1) and/or its natural derivatives. Thiamine diphosphate (ThDP), which is a major thiamine derivative, affects p53 binding to DNA. In order to elucidate the mechanism of regulation of thiamine-dependent metabolism by p53, we assessed putative p53-binding sites near transcription starting points in genes coding for transporters and enzymes, whose function is associated with thiamine and/or its derivatives. The predictions were validated by studying cell metabolic response to the p53 inducer cisplatin. Expression of p53 and its known target, p21, has been evaluated in cisplatin-treated and control human lung adenocarcinoma A549 cells that possess functional p53 pathway. We also investigated the activity of enzymes involved in the thiamine-dependent energy metabolism. Along with upregulating the expression of p53 and p21, cisplatin affected the activities of metabolic enzymes, whose genes were predicted as carrying the p53-binding sites. The activity of glutamate dehydrogenase GDH2 isoenzyme strongly decreased, while the activities of NADP+-dependent isocitrate dehydrogenase (IDH) and malic enzymes, as well as the activity of 2-oxoglutarate dehydrogenase complex at its endogenous ThDP level, were elevated. Simultaneously, the activities of NAD+-dependent IDH, mitochondrial aspartate aminotransferase, and two malate dehydrogenase isoenzymes, whose genes were not predicted to have the p53-binding sequences near the transcription starting points, were upregulated by cisplatin. The p53-dependent regulation of the assayed metabolic enzymes correlated with induction of p21 by p53 rather than induction of p53 itself.
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Affiliation(s)
- V I Bunik
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia. .,Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, 119991, Russia.,Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, 119991, Russia
| | - V A Aleshin
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia.,Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - X Zhou
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, 141 86, Sweden
| | - S Krishnan
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, 141 86, Sweden
| | - A Karlsson
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, 141 86, Sweden
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Sampels S, Pickova J, Gatchell S, Karlsson A, Yngvesson J, Arvidsson Segerkvist K. Effect of genetic background, pen size and outdoor access on meat quality in two slow growing broiler hybrids. ACTA AGR SCAND A-AN 2021. [DOI: 10.1080/09064702.2020.1866061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- S. Sampels
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - J. Pickova
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - S. Gatchell
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - A. Karlsson
- Department of Animal Environment and Health, Swedish University of Agricultural Sciences, Skara, Sweden
| | - J. Yngvesson
- Department of Animal Environment and Health, Swedish University of Agricultural Sciences, Skara, Sweden
| | - K. Arvidsson Segerkvist
- Department of Animal Environment and Health, Swedish University of Agricultural Sciences, Skara, Sweden
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10
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Karlsson A, Persson M, Mjörnheim AC, Gudnadottir G, Hellgren J. Total nasal airway resistance while sitting predicts airway collapse when lying down. J Laryngol Otol 2020; 134:1-8. [PMID: 33106191 DOI: 10.1017/s0022215120002194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Nasal obstruction when lying down is a common complaint in patients with chronic nasal obstruction, but rhinomanometry is typically performed in the sitting position. This study aimed to analyse whether adding rhinomanometry in a supine position is a useful examination. METHOD A total of 41 patients with chronic nasal obstruction underwent rhinomanometry and acoustic rhinometry, sitting and supine, before and after decongestion, as well as an over-night polygraphy. RESULTS Total airway resistance was measurable in a supine position in 48 per cent (14 of 29) of the patients with total airway resistance of equal to or less than 0.3 Pa/cm3/second when sitting and in none (0 of 12) of the patients with total nasal airway resistance of more than 0.3 Pa/cm3/second when sitting. After decongestion, this increased to 83 per cent and 58 per cent, respectively. CONCLUSION Increased nasal resistance when sitting predicts nasal breathing problems when supine. Rhinomanometry in a supine position should be performed to diagnose upper airway collapse when supine.
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Affiliation(s)
- A Karlsson
- Department of Otorhinolaryngology, Head & Neck Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
| | - M Persson
- Department of Otorhinolaryngology, Head & Neck Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
| | - A-C Mjörnheim
- Department of Otorhinolaryngology, Head & Neck Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
| | - G Gudnadottir
- Department of Otorhinolaryngology, Head & Neck Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
| | - J Hellgren
- Department of Otorhinolaryngology, Head & Neck Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sweden
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Ellonen A, Heinolainen K, Saarinen S, Karlsson A, Carlqvist P, Mandelin J, Utriainen M, Vertuani S, Holm B. 251P Characteristics and overall survival of an advanced breast cancer cohort in Finland. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Madekivi V, Boström P, Karlsson A, Aaltonen R, Salminen E. Can a machine-learning model improve the prediction of nodal stage after a positive sentinel lymph node biopsy in breast cancer? Acta Oncol 2020; 59:689-695. [PMID: 32148141 DOI: 10.1080/0284186x.2020.1736332] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Background: The current standard for evaluating axillary nodal burden in clinically node negative breast cancer is sentinel lymph node biopsy (SLNB). However, the accuracy of SLNB to detect nodal stage N2-3 remains debatable. Nomograms can help the decision-making process between axillary treatment options. The aim of this study was to create a new model to predict the nodal stage N2-3 after a positive SLNB using machine learning methods that are rarely seen in nomogram development.Material and methods: Primary breast cancer patients who underwent SLNB and axillary lymph node dissection (ALND) between 2012 and 2017 formed cohorts for nomogram development (training cohort, N = 460) and for nomogram validation (validation cohort, N = 70). A machine learning method known as the gradient boosted trees model (XGBoost) was used to determine the variables associated with nodal stage N2-3 and to create a predictive model. Multivariate logistic regression analysis was used for comparison.Results: The best combination of variables associated with nodal stage N2-3 in XGBoost modeling included tumor size, histological type, multifocality, lymphovascular invasion, percentage of ER positive cells, number of positive sentinel lymph nodes (SLN) and number of positive SLNs multiplied by tumor size. Indicating discrimination, AUC values for the training cohort and the validation cohort were 0.80 (95%CI 0.71-0.89) and 0.80 (95%CI 0.65-0.92) in the XGBoost model and 0.85 (95%CI 0.77-0.93) and 0.75 (95%CI 0.58-0.89) in the logistic regression model, respectively.Conclusions: This machine learning model was able to maintain its discrimination in the validation cohort better than the logistic regression model. This indicates advantages in employing modern artificial intelligence techniques into nomogram development. The nomogram could be used to help identify nodal stage N2-3 in early breast cancer and to select appropriate treatments for patients.
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Affiliation(s)
- V. Madekivi
- Department of Oncology, Turku University Hospital, Turku, Finland
- Faculty of Medicine, University of Turku, Turku, Finland
| | - P. Boström
- Faculty of Medicine, University of Turku, Turku, Finland
- Department of Pathology, Turku University Hospital, Turku, Finland
| | - A. Karlsson
- Faculty of Medicine, University of Turku, Turku, Finland
- Auria Clinical Informatics, Turku, Finland
| | - R. Aaltonen
- Faculty of Medicine, University of Turku, Turku, Finland
- Department of Surgery, Turku University Hospital, Turku, Finland
| | - E. Salminen
- Department of Oncology, Turku University Hospital, Turku, Finland
- Faculty of Medicine, University of Turku, Turku, Finland
- Finnish Nuclear and Radiation Safety, Helsinki, Finland
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Karlsson A, Cirenajwis H, Planck M, Staaf J. P2.03-02 A Single Sample Predictor of Transcriptional Lung Adenocarcinoma Subtypes: Predicting Biology and Prognosis. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Viinanen A, Lassenius MI, Toppila I, Karlsson A, Veijalainen L, Idänpään-Heikkilä JJ, Laitinen T. The burden of adult asthma in Finland: impact of disease severity and eosinophil count on health care resource utilization. J Asthma 2019; 57:1092-1102. [PMID: 31267775 DOI: 10.1080/02770903.2019.1633664] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Objective: To describe health care resource utilization (HCRU) and associated costs in adult patients referred for specialist asthma care in Southwest Finland, by disease severity and blood eosinophil count (BEC).Methods: This non-interventional, retrospective registry study (GSK ID: HO-17-17558) utilized data from patients >18 years of age on the hospital register of the Hospital District of Southwest Finland. Data extraction was from January 1, 2004 to December 31, 2015; the index date was the first hospital visit within this period with an International Classification of Diseases-10 diagnosis code for asthma or acute severe asthma. Patients were categorized by asthma severity (based on medication use) and BEC (<300 or ≥300 cells/μL). Total and asthma-related HCRU and estimated costs were recorded the year following index and for calendar years 2004-2015.Results: Overall, 14,398 patients were included; 388 had severe asthma at index. BEC was available for 3781 patients; 1434 had a BEC ≥300 cells/μL and 2347 had a BEC <300 cells/μL. A total of 1241 patients had severe asthma; 270 patients had severe eosinophilic asthma (severe asthma and a BEC ≥300 cells/μL). Patients with severe versus non-severe asthma had higher total- and asthma-related outpatient visits, inpatient days, emergency room visits and costs per patient year; those with BEC ≥300 cells/μL versus <300 cells/μL had more outpatient visits. All recorded HCRU and associated costs were highest in patients with severe eosinophilic asthma.Conclusion: This study demonstrated a substantial burden associated with severe and/or eosinophilic asthma for adults in Finland.
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Affiliation(s)
- A Viinanen
- Division of Medicine, Department of Pulmonary Diseases, Turku University Hospital, Turku, Finland.,Department of Pulmonary Diseases and Clinical Allergology, University of Turku, Turku, Finland
| | | | | | - A Karlsson
- Auria Biobank, Turku University Hospital, Turku, Finland.,University of Turku, Turku, Finland
| | | | | | - T Laitinen
- Division of Medicine, Department of Pulmonary Diseases, Turku University Hospital, Turku, Finland.,Department of Pulmonary Diseases and Clinical Allergology, University of Turku, Turku, Finland.,Tampere University Hospital, Tampere, Finland
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15
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Sparud-Lundin C, Berg S, Fasth A, Karlsson A, Wekell P. From uncertainty to gradually managing and awaiting recovery of a periodic condition- a qualitative study of parents´ experiences of PFAPA syndrome. BMC Pediatr 2019; 19:99. [PMID: 30961562 PMCID: PMC6454720 DOI: 10.1186/s12887-019-1458-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 03/13/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The prevalence of periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis (PFAPA) syndrome is unknown. Although an uncommon condition, it is considered to be the most common autoinflammatory disease among children in many parts of the world. The knowledge of the consequences of the recurrent fever episodes for the child and its family are limited. This study explores the experiences of parents regarding the impact of the disease on the child's general well-being, the family's situation and how the family handles the associated challenges. METHODS A qualitative approach was used, applying a modified version of Grounded theory for design, data collection and analysis. Data was collected from two different sources: communication between parents of children with PFAPA in a closed Facebook group and face-to face interviews with one of the parents of children diagnosed with PFAPA (6 mothers and 2 fathers). RESULTS Parents described a lengthy process of how everyday life becomes affected by their child's recurrent fever episodes. This process is depicted in the following Grounded Theory core category: From uncertainty to gradually managing and awaiting recovery. The categories Uncertainty, Assurance, Gradually managing and Recovery describe the experienced illness trajectory. The illness representation illustrates the experiences/impacts of the periodic condition in the subcategories: Harmlessness-Severity, Disclosure of diagnosis, Impact on daily life and Regularity-Unpredictability. The children's well-being was highly affected by the symptoms during episodes. Parents experienced increased stress with constant fatigue, social constraints of family life and restricted career opportunities. Nevertheless, hope of recovery was constantly present. CONCLUSIONS PFAPA is associated with a considerable burden on the child and the parents in daily life. Obtaining a diagnosis enables parents to move from a state of uncertainty towards a sense of coherence while awaiting recovery. Because of limited general knowledge of the condition and its impact on daily life, health care professionals need to become aware of the parents' efforts to mitigate the consequences of the recurrent episodes for the child and for the family as a whole.
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Affiliation(s)
- C Sparud-Lundin
- Institute of Health and Care Sciences, Sahlgrenska Academy, University of Gothenburg, Box 457, SE-, 405 30, Gothenburg, Sweden.
| | - S Berg
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - A Fasth
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - A Karlsson
- Department of Rheumatology and Inflammation Research, Institute of Medicine Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - P Wekell
- Department of Pediatrics, NU-Hospital Group, Uddevalla, Sweden.,Department of Pediatrics, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden
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Palmér E, Karlsson A, Nordström F, Petruson K, Ljungberg M, Sohlin M. EP-2046 Patient setup verification using synthetic DRRs in an MR only workflow for head and neck cancer. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32466-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Hybert E, Karlsson A, Wassbjer D, So M, Kloutschek A, Knutsson K, Freitag C, Karlsteen M. Development of system for collection of positional based data for horses. J Vet Behav 2019. [DOI: 10.1016/j.jveb.2018.06.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Gonzalez V, Karlsson A, Jonmarker Jaraj S, Eriksson S, Sandelin K, Arver B. The accuracy of incremental pre-operative breast MRI findings – concordance with histopathology in the Swedish randomized multicenter POMB trial. Eur J Cancer 2018. [DOI: 10.1016/s0959-8049(18)30668-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Ometto F, Berg A, Björn A, Safaric L, Svensson BH, Karlsson A, Ejlertsson J. Inclusion of Saccharina latissima in conventional anaerobic digestion systems. Environ Technol 2018; 39:628-639. [PMID: 28317451 DOI: 10.1080/09593330.2017.1309075] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 03/14/2017] [Indexed: 06/06/2023]
Abstract
Loading macroalgae into existing anaerobic digestion (AD) plants allows us to overcome challenges such as low digestion efficiencies, trace elements limitation, excessive salinity levels and accumulation of volatile fatty acids (VFAs), observed while digesting algae as a single substrate. In this work, the co-digestion of the brown macroalgae Saccharina latissima with mixed municipal wastewater sludge (WWS) was investigated in mesophilic and thermophilic conditions. The hydraulic retention time (HRT) and the organic loading rate (OLR) were fixed at 19 days and 2.1 g l-1 d-1 of volatile solids (VS), respectively. Initially, WWS was digested alone. Subsequently, a percentage of the total OLR (20%, 50% and finally 80%) was replaced by S. latissima biomass. Optimal digestion conditions were observed at medium-low algae loading (≤50% of total OLR) with an average methane yield close to [Formula: see text] and [Formula: see text] in mesophilic and thermophilic conditions, respectively. The conductivity values increased with the algae loading without inhibiting the digestion process. The viscosities of the reactor sludges revealed decreasing values with reduced WWS loading at both temperatures, enhancing mixing properties.
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Affiliation(s)
- F Ometto
- a Research and Development Department , Scandinavian Biogas Fuels AB , Stockholm , Sweden
| | - A Berg
- a Research and Development Department , Scandinavian Biogas Fuels AB , Stockholm , Sweden
| | - A Björn
- b Department of Thematic Studies - Environmental Changes , Linköping University , Linköping , Sweden
| | - L Safaric
- b Department of Thematic Studies - Environmental Changes , Linköping University , Linköping , Sweden
| | - B H Svensson
- b Department of Thematic Studies - Environmental Changes , Linköping University , Linköping , Sweden
| | - A Karlsson
- a Research and Development Department , Scandinavian Biogas Fuels AB , Stockholm , Sweden
| | - J Ejlertsson
- a Research and Development Department , Scandinavian Biogas Fuels AB , Stockholm , Sweden
- b Department of Thematic Studies - Environmental Changes , Linköping University , Linköping , Sweden
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Synnot A, Karlsson A, Brichko L, Chee M, Fitzgerald M, Misra MC, Howard T, Mathew J, Rotter T, Fiander M, Gruen RL, Gupta A, Dharap S, Fahey M, Stephenson M, O'Reilly G, Cameron P, Mitra B. Prehospital notification for major trauma patients requiring emergency hospital transport: A systematic review. J Evid Based Med 2017; 10:212-221. [PMID: 28467026 DOI: 10.1111/jebm.12256] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 03/01/2017] [Indexed: 01/11/2023]
Abstract
OBJECTIVE This systematic review aimed to determine the effect of prehospital notification systems for major trauma patients on overall (<30 days) and early (<24 hours) mortality, hospital reception, and trauma team presence (or equivalent) on arrival, time to critical interventions, and length of hospital stay. METHODS Experimental and observational studies of prehospital notification compared with no notification or another type of notification in major trauma patients requiring emergency transport were included. Risk of bias was assessed using the Cochrane ACROBAT-NRSI tool. A narrative synthesis was conducted and evidence quality rated using the GRADE criteria. RESULTS Three observational studies of 72,423 major trauma patients were included. All were conducted in high-income countries in hospitals with established trauma services, with two studies undertaking retrospective analysis of registry data. Two studies reported overall mortality, one demonstrating a reduction in mortality; (adjusted odds ratio (OR) 0.61, 95% confidence interval (CI) 0.39 to 0.94, 72,073 participants); and the other demonstrating a nonsignificant change (OR 0.61, 95% CI 0.23 to 1.64, 81 participants). The quality of this evidence was rated as very low. CONCLUSION Limited research on the topic constrains conclusive evidence on the effect of prehospital notification on patient-centered outcomes after severe trauma. Composite interventions that combine prehospital notification with effective actions on arrival to hospital such as trauma bay availability, trauma team presence, and early access to definitive management may provide more robust evidence towards benefits of early interventions during trauma reception and resuscitation.
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Affiliation(s)
- Anneliese Synnot
- Australian and New Zealand Intensive Care Research Centre (ANZIC-RC), School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
- Cochrane Consumers and Communication, Centre for Health Communication and Participation, School of Psychology and Public Health, La Trobe University, Melbourne, Australia
- National Trauma Research Institute, Melbourne, Australia
- Central Clinical School, Monash University, Melbourne, Australia
| | | | | | - Melissa Chee
- National Trauma Research Institute, Melbourne, Australia
| | - Mark Fitzgerald
- National Trauma Research Institute, Melbourne, Australia
- The Alfred Hospital, Melbourne, Australia
| | - Mahesh C Misra
- JPN Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Teresa Howard
- National Trauma Research Institute, Melbourne, Australia
| | - Joseph Mathew
- National Trauma Research Institute, Melbourne, Australia
- The Alfred Hospital, Melbourne, Australia
| | - Thomas Rotter
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Canada
| | | | - Russell L Gruen
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Amit Gupta
- The Alfred Hospital, Melbourne, Australia
- JPN Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Satish Dharap
- Lokmanya Tilak Municipal General Hospital, Mumbai, India
| | - Madonna Fahey
- National Trauma Research Institute, Melbourne, Australia
| | - Michael Stephenson
- Australian and New Zealand Intensive Care Research Centre (ANZIC-RC), School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
- Ambulance Victoria, Melbourne, Australia
| | - Gerard O'Reilly
- National Trauma Research Institute, Melbourne, Australia
- The Alfred Hospital, Melbourne, Australia
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Peter Cameron
- National Trauma Research Institute, Melbourne, Australia
- The Alfred Hospital, Melbourne, Australia
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Biswadev Mitra
- National Trauma Research Institute, Melbourne, Australia
- The Alfred Hospital, Melbourne, Australia
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
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Langenskiöld M, Smidfelt K, Karlsson A, Bohm C, Herlitz J, Nordanstig J. Weak Links in the Early Chain of Care of Acute Lower Limb Ischaemia in Terms of Recognition and Emergency Management. Eur J Vasc Endovasc Surg 2017; 54:235-240. [PMID: 28583719 DOI: 10.1016/j.ejvs.2017.04.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 04/15/2017] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Acute lower limb ischaemia (ALLI) is a potentially fatal, limb threatening medical emergency. Early treatment is essential for a good outcome. The aim was to describe the early chain of care in ALLI focusing on lead times and emergency management in order to identify weak links for improvement. METHODS This was a retrospective, descriptive case study. This study analysed the medical records of all patients with a main discharge diagnosis of ALLI between January 2009 and December 2014. Predetermined emergency care data on lead times, diagnosis recognition, presenting symptoms, emergency care treatment and outcome were collected for patients who were transported by the Emergency Medical Service (EMS) and those who were not. RESULTS In total, 552 medical records were audited of which 195 patients fulfilled the inclusion criteria and were analysed. Among them were 117 (60%) transported by the EMS. The median time from symptom onset to revascularisation was 23 (interquartile range [IQR] 10-55; EMS transported) and 93 (IQR 42-152, not EMS transported) hours (p < .01). The time from symptom onset to arrival in hospital was 5 (IQR 2-26; EMS transported) and 48 (IQR 6-108; not EMS transported) hours. After arrival in hospital, the median time to first doctor evaluation was 51 (IQR 28-90; EMS transported) and 80 (IQR 44-169; not EMS transported) minutes, p = .01. Low molecular weight heparin (LMWH) was given to 72% of patients in the emergency department (ED) and a multivariate analysis showed that the use of LMWH was associated with a more favourable outcome. CONCLUSIONS Both the time spent in the ED and the time from the onset of symptoms to revascularisation were considerably longer than optimal. Time delays in the early treatment chain can mainly be attributed to "patient delay" and a considerable time spent in hospital before revascularisation. The use of LMWH as an integral part of ED management was associated with a better outcome.
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Affiliation(s)
- M Langenskiöld
- Department of Vascular Surgery, Sahlgrenska University Hospital and Institute of Medicine, Department for Molecular and Clinical Medicine, The Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
| | - K Smidfelt
- Department of Vascular Surgery, Sahlgrenska University Hospital and Institute of Medicine, Department for Molecular and Clinical Medicine, The Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
| | - A Karlsson
- Department of Vascular Surgery, Sahlgrenska University Hospital and Institute of Medicine, Department for Molecular and Clinical Medicine, The Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
| | - C Bohm
- Department of Vascular Surgery, Sahlgrenska University Hospital and Institute of Medicine, Department for Molecular and Clinical Medicine, The Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
| | - J Herlitz
- The Centre for Pre-Hospital Research, University of Borås, Borås, Sweden
| | - J Nordanstig
- Department of Vascular Surgery, Sahlgrenska University Hospital and Institute of Medicine, Department for Molecular and Clinical Medicine, The Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden.
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Teuho J, Tuisku J, Karlsson A, Linden J, Teras M. Effect of Brain Tissue and Continuous Template-Based Skull in MR-Based Attenuation Correction for Brain PET/MR. IEEE Trans Radiat Plasma Med Sci 2017. [DOI: 10.1109/tns.2017.2692306] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
The energy imparted to the children in diagnosing and hydrostatic reduction of intussusception was measured in 45 children by means of an area-dose measurement device and the mean absorbed dose was estimated. The device was provided with data on tube kVp, mAs and shutter positions and the results were presented as dGy × cm2. The device had been calibrated against a 30 cm3 ionisation chamber at the relevant kVp range. The median energy imparted and mean absorbed dose were 10.8 mJ and 0.94 mGy, respectively. 70% of the total dose was delivered during fluoroscopy. The complex irradiation situation with varying field collimation, tube voltage and amount of photon absorbing barium sulphate in the intestines renders organ dose and hazards estimations less reliable. However, even leaving the radiation shielding effect of the barium sulphate out, the radiation load is justifiable for a combined diagnostic and interventional procedure.
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Rosenborg M, Karlsson A, Hirsch G, Mortensson W. Contrast Medium Injected into Juvenile Bone Cysts to Analyze Interior Morphology and Guide Intracavity Corticosteroid Treatment. Acta Radiol 2016. [DOI: 10.1177/028418519203300305] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In connection with treating juvenile bone cysts with intracavital corticosteroid injections, the interior cyst anatomy was analyzed at cystography in 13 children aged 4 to 15 years. Only 4 children had a true unicameral cyst; the others had 2 or more cysts or had compartments with free or restricted communication to the main cyst. Cysts and compartments which had not been reached by steroids may continue to grow. Optimum treatment may therefore require injections at different sites guided by cystography. Neither conventional criteria of cyst activity nor repeated bone scintigraphy 3 months after treatment could predict whether the treatment would lead to final healing.
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Balzarini J, Jonckheere H, Harrison W, Dao D, Anné J, De Clercq E, Karlsson A. Oxathiin Carboxanilide Derivatives: A Class of Non-Nucleoside HIV-1-Specific Reverse Transcriptase Inhibitors (NNRTIs) that are Active against Mutant HIV-1 Strains Resistant to other NNRTIs. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/095632029500600306] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The HIV-1-specific oxathiin carboxanilide derivative 1-methylethyl 2-chloro-5-[[(5,6-dihydro-2-methyl-1,4-oxathiin-3-yl)carbonyl]amino]benzoate (NSC 615985) (designated UC84) has potent activity against HIV-1(IIIB) (50% effective concentration: 0.015 μg ml−1). UC84 was found to select for a 138-Lys mutant virus strain in HIV-1-infected CEM cell cultures. When the 138-Lys mutation was introduced solely in the p51 subunit of the p51/p66 reverse transcriptase (RT) heterodimer by site-directed mutagenesis, the enzyme proved 10-fold more resistant to UC84 than when the amino acid mutation was introduced solely in the p66 subunit of the p51/p66 RT heterodimer. These data provided clear evidence for a structural and functional role of the p51 subunit in the sensitivity/resistance of the enzyme to UC84. UC84 also proved to be virtually inactive against mutant HIV-1 strains containing the 100-lle, 106-Ala, 138-Lys or 181-Cys mutation in their RT. However, minor structural changes in the molecule, such as replacement of the oxygen of the amide moiety by sulfur, or the isopropyl ester moiety by cyclopentyl or a secondary butyl, or the methyl group of the oxathiin part by ethyl, made the compound markedly more inhibitory to one or several HIV-1 mutant strains. For example, compound 131 (1-methylethyl 2-chloro-5-[[(5,6-dihydro-2-methyl-1,4-oxathiin-3-yl)thioxomethyl]amino]benzoate was only 2-fold more active than the parent compound UC84 against wild-type HIV-1, but 30- to 100-fold more inhibitory to HIV-1 mutant strains that contained the 100-11e, 106-A1a, 138-Lys or 181-Cys in their RT. These findings should be taken into account when selecting suitable drug candidates for the treatment of HIV-1 infections, particularly those that have developed resistance to other non-nucleoside RT inhibitors (NNRTIs).
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Affiliation(s)
| | - H. Jonckheere
- Rega Institute for Medical Research, K. U. Leuven, B-3000 Leuven, Belgium
| | - W.A. Harrison
- Uniroyal Chemical Company, Ltd., Guelph, Ontario, N1E 5L7, Canada
| | - D.C. Dao
- Uniroyal Chemical Company, Ltd., Guelph, Ontario, N1E 5L7, Canada
| | - J. Anné
- Rega Institute for Medical Research, K. U. Leuven, B-3000 Leuven, Belgium
| | - E. De Clercq
- Rega Institute for Medical Research, K. U. Leuven, B-3000 Leuven, Belgium
| | - A. Karlsson
- Karolinska Institute, S-17177 Stockholm, Sweden
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Kisten Y, af Klint E, Levitsky A, Rezaei H, Györi N, Karlsson A, van Vollenhoven R, Arnaud L. SAT0093 Hand Joint Inflammation on Fluorescence Optical Imaging Reveal Distinct Patterns in Seropositive and Seronegative Early Rheumatoid Arthritis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.4502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kisten Y, af Klint E, Györi N, Karlsson A, Levitsky A, Rezaei H, Arnaud L, van Vollenhoven R. AB0981 Hand Joint Inflammation in Early Ra: Clinical Ultrasound and Fluorescence Optical Imaging Diagnostics. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.1946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kisten Y, Klint EA, Györi N, Rezaei H, Levitsky A, Karlsson A, van Vollenhoven RF. A5.02 Fluorescence optical imaging coupled with ultrasound radiography for detecting subtle hand inflammation in early rheumatoid arthritis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-209124.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Berg S, Wekell P, Óskarsdóttir S, Martinell J, Rupröder R, Fridh E, Karlsson A, Backteman T, Fasth A. Pediatric chronic non-bacterial osteomyelitis in Goteborg, Sweden. Pediatr Rheumatol Online J 2015. [PMCID: PMC4599932 DOI: 10.1186/1546-0096-13-s1-p180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Wekell P, Björnsdottir H, Björkman L, Sundqvist M, Christenson K, Osla V, Berg S, Fasth A, Welin A, Bylund J, Karlsson A. Challenging the opinion that SAPHO syndrome is associated with low intracellular ROS production in neutrophils. Pediatr Rheumatol Online J 2015. [PMCID: PMC4596968 DOI: 10.1186/1546-0096-13-s1-p16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Berg S, Björnsdottir H, Sundqvist M, Wekell P, Christenson K, Osla V, Welin A, Bylund J, Karlsson A. MPO deficiency confers impaired processing of neutrophil reactive oxygen species in a patient with severe CRMO. Pediatr Rheumatol Online J 2015. [PMCID: PMC4599949 DOI: 10.1186/1546-0096-13-s1-p191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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Hofstra LM, Sauvageot N, Albert J, Alexiev I, Garcia F, Struck D, Van de Vijver DAMC, Åsjö B, Beshkov D, Coughlan S, Descamps D, Griskevicius A, Hamouda O, Horban A, Van Kasteren M, Kolupajeva T, Kostrikis LG, Liitsola K, Linka M, Mor O, Nielsen C, Otelea D, Paraskevis D, Paredes R, Poljak M, Puchhammer-Stöckl E, Sönnerborg A, Staneková D, Stanojevic M, Van Laethem K, Zazzi M, Zidovec Lepej S, Boucher CAB, Schmit JC, Wensing AMJ, Puchhammer-Stockl E, Sarcletti M, Schmied B, Geit M, Balluch G, Vandamme AM, Vercauteren J, Derdelinckx I, Sasse A, Bogaert M, Ceunen H, De Roo A, De Wit S, Echahidi F, Fransen K, Goffard JC, Goubau P, Goudeseune E, Yombi JC, Lacor P, Liesnard C, Moutschen M, Pierard D, Rens R, Schrooten Y, Vaira D, Vandekerckhove LPR, Van den Heuvel A, Van Der Gucht B, Van Ranst M, Van Wijngaerden E, Vandercam B, Vekemans M, Verhofstede C, Clumeck N, Van Laethem K, Beshkov D, Alexiev I, Lepej SZ, Begovac J, Kostrikis L, Demetriades I, Kousiappa I, Demetriou V, Hezka J, Linka M, Maly M, Machala L, Nielsen C, Jørgensen LB, Gerstoft J, Mathiesen L, Pedersen C, Nielsen H, Laursen A, Kvinesdal B, Liitsola K, Ristola M, Suni J, Sutinen J, Descamps D, Assoumou L, Castor G, Grude M, Flandre P, Storto A, Hamouda O, Kücherer C, Berg T, Braun P, Poggensee G, Däumer M, Eberle J, Heiken H, Kaiser R, Knechten H, Korn K, Müller H, Neifer S, Schmidt B, Walter H, Gunsenheimer-Bartmeyer B, Harrer T, Paraskevis D, Hatzakis A, Zavitsanou A, Vassilakis A, Lazanas M, Chini M, Lioni A, Sakka V, Kourkounti S, Paparizos V, Antoniadou A, Papadopoulos A, Poulakou G, Katsarolis I, Protopapas K, Chryssos G, Drimis S, Gargalianos P, Xylomenos G, Lourida G, Psichogiou M, Daikos GL, Sipsas NV, Kontos A, Gamaletsou MN, Koratzanis G, Sambatakou H, Mariolis H, Skoutelis A, Papastamopoulos V, Georgiou O, Panagopoulos P, Maltezos E, Coughlan S, De Gascun C, Byrne C, Duffy M, Bergin C, Reidy D, Farrell G, Lambert J, O'Connor E, Rochford A, Low J, Coakely P, O'Dea S, Hall W, Mor O, Levi I, Chemtob D, Grossman Z, Zazzi M, de Luca A, Balotta C, Riva C, Mussini C, Caramma I, Capetti A, Colombo MC, Rossi C, Prati F, Tramuto F, Vitale F, Ciccozzi M, Angarano G, Rezza G, Kolupajeva T, Vasins O, Griskevicius A, Lipnickiene V, Schmit JC, Struck D, Sauvageot N, Hemmer R, Arendt V, Michaux C, Staub T, Sequin-Devaux C, Wensing AMJ, Boucher CAB, van de Vijver DAMC, van Kessel A, van Bentum PHM, Brinkman K, Connell BJ, van der Ende ME, Hoepelman IM, van Kasteren M, Kuipers M, Langebeek N, Richter C, Santegoets RMWJ, Schrijnders-Gudde L, Schuurman R, van de Ven BJM, Åsjö B, Kran AMB, Ormaasen V, Aavitsland P, Horban A, Stanczak JJ, Stanczak GP, Firlag-Burkacka E, Wiercinska-Drapalo A, Jablonowska E, Maolepsza E, Leszczyszyn-Pynka M, Szata W, Camacho R, Palma C, Borges F, Paixão T, Duque V, Araújo F, Otelea D, Paraschiv S, Tudor AM, Cernat R, Chiriac C, Dumitrescu F, Prisecariu LJ, Stanojevic M, Jevtovic D, Salemovic D, Stanekova D, Habekova M, Chabadová Z, Drobkova T, Bukovinova P, Shunnar A, Truska P, Poljak M, Lunar M, Babic D, Tomazic J, Vidmar L, Vovko T, Karner P, Garcia F, Paredes R, Monge S, Moreno S, Del Amo J, Asensi V, Sirvent JL, de Mendoza C, Delgado R, Gutiérrez F, Berenguer J, Garcia-Bujalance S, Stella N, de Los Santos I, Blanco JR, Dalmau D, Rivero M, Segura F, Elías MJP, Alvarez M, Chueca N, Rodríguez-Martín C, Vidal C, Palomares JC, Viciana I, Viciana P, Cordoba J, Aguilera A, Domingo P, Galindo MJ, Miralles C, Del Pozo MA, Ribera E, Iribarren JA, Ruiz L, de la Torre J, Vidal F, Clotet B, Albert J, Heidarian A, Aperia-Peipke K, Axelsson M, Mild M, Karlsson A, Sönnerborg A, Thalme A, Navér L, Bratt G, Karlsson A, Blaxhult A, Gisslén M, Svennerholm B, Bergbrant I, Björkman P, Säll C, Mellgren Å, Lindholm A, Kuylenstierna N, Montelius R, Azimi F, Johansson B, Carlsson M, Johansson E, Ljungberg B, Ekvall H, Strand A, Mäkitalo S, Öberg S, Holmblad P, Höfer M, Holmberg H, Josefson P, Ryding U. Transmission of HIV Drug Resistance and the Predicted Effect on Current First-line Regimens in Europe. Clin Infect Dis 2015; 62:655-663. [PMID: 26620652 PMCID: PMC4741360 DOI: 10.1093/cid/civ963] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 11/06/2015] [Indexed: 11/13/2022] Open
Abstract
Transmitted human immunodeficiency virus drug resistance in Europe is stable at around 8%. The impact of baseline mutation patterns on susceptibility to antiretroviral drugs should be addressed using clinical guidelines. The impact on baseline susceptibility is largest for nonnucleoside reverse transcriptase inhibitors. Background. Numerous studies have shown that baseline drug resistance patterns may influence the outcome of antiretroviral therapy. Therefore, guidelines recommend drug resistance testing to guide the choice of initial regimen. In addition to optimizing individual patient management, these baseline resistance data enable transmitted drug resistance (TDR) to be surveyed for public health purposes. The SPREAD program systematically collects data to gain insight into TDR occurring in Europe since 2001. Methods. Demographic, clinical, and virological data from 4140 antiretroviral-naive human immunodeficiency virus (HIV)–infected individuals from 26 countries who were newly diagnosed between 2008 and 2010 were analyzed. Evidence of TDR was defined using the WHO list for surveillance of drug resistance mutations. Prevalence of TDR was assessed over time by comparing the results to SPREAD data from 2002 to 2007. Baseline susceptibility to antiretroviral drugs was predicted using the Stanford HIVdb program version 7.0. Results. The overall prevalence of TDR did not change significantly over time and was 8.3% (95% confidence interval, 7.2%–9.5%) in 2008–2010. The most frequent indicators of TDR were nucleoside reverse transcriptase inhibitor (NRTI) mutations (4.5%), followed by nonnucleoside reverse transcriptase inhibitor (NNRTI) mutations (2.9%) and protease inhibitor mutations (2.0%). Baseline mutations were most predictive of reduced susceptibility to initial NNRTI-based regimens: 4.5% and 6.5% of patient isolates were predicted to have resistance to regimens containing efavirenz or rilpivirine, respectively, independent of current NRTI backbones. Conclusions. Although TDR was highest for NRTIs, the impact of baseline drug resistance patterns on susceptibility was largest for NNRTIs. The prevalence of TDR assessed by epidemiological surveys does not clearly indicate to what degree susceptibility to different drug classes is affected.
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Affiliation(s)
- L Marije Hofstra
- Luxembourg Institute of Health, Luxembourg.,Department of Virology, University Medical Center Utrecht, The Netherlands
| | | | - Jan Albert
- Karolinska Institute, Solna.,Karolinska University Hospital, Stockholm, Sweden
| | - Ivailo Alexiev
- National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | - Federico Garcia
- Complejo Hospitalario Universitario de Granada, Instituto de Investigación IBS Granada; on behalf of Cohorte de Adultos de la Red de Investigación en SIDA, Spain
| | | | | | | | - Danail Beshkov
- National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | | | - Diane Descamps
- AP-HP Groupe hospitalier Bichat-Claude Bernard, IAME INSERM UMR 1137, Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | | | | | | | | | | | | | - Kirsi Liitsola
- Department of Infectious Diseases, National Institute for Health and Welfare, Helsinki, Finland
| | - Marek Linka
- National Reference Laboratory for HIV/AIDS, National Institute of Public Health, Prague, Czech Republic
| | - Orna Mor
- National HIV Reference Laboratory, Chaim Sheba Medical Center, Tel-Hashomer, Israel
| | | | - Dan Otelea
- National Institute for Infectious Diseases "Prof. dr. Matei Bals", Bucharest, Romania
| | | | | | - Mario Poljak
- Faculty of Medicine, Slovenian HIV/AIDS Reference Centre, University of Ljubljana, Slovenia
| | | | - Anders Sönnerborg
- Karolinska Institute, Solna.,Karolinska University Hospital, Stockholm, Sweden
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Kisten Y, Györi N, af Klint E, Rezaei H, Levitsky A, Karlsson A, van Vollenhoven R. SAT0632 Quantification of Hand and Wrist Synovitis Using Digital Activity Fluorescence Optical Imaging. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Fenyö EM, Fiore J, Karlsson A, Albert J, Scarlatti G. Biological phenotypes of HIV-1 in pathogenesis and transmission. Antibiot Chemother (1971) 2015; 46:18-24. [PMID: 7826036 DOI: 10.1159/000423630] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- E M Fenyö
- Department of Microbiology and Tumor Biology, Karolinska Institute, Stockholm, Sweden
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Morgan-Sagastume F, Hjort M, Cirne D, Gérardin F, Lacroix S, Gaval G, Karabegovic L, Alexandersson T, Johansson P, Karlsson A, Bengtsson S, Arcos-Hernández MV, Magnusson P, Werker A. Integrated production of polyhydroxyalkanoates (PHAs) with municipal wastewater and sludge treatment at pilot scale. Bioresour Technol 2015; 181:78-89. [PMID: 25638407 DOI: 10.1016/j.biortech.2015.01.046] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 01/08/2015] [Accepted: 01/09/2015] [Indexed: 05/11/2023]
Abstract
A pilot-scale process was operated over 22 months at the Brussels North Wastewater Treatment Plant (WWTP) in order to evaluate polyhydroxyalkanoate (PHA) production integration with services of municipal wastewater and sludge management. Activated sludge was produced with PHA accumulation potential (PAP) by applying feast-famine selection while treating the readily biodegradable COD from influent wastewater (average removals of 70% COD, 60% CODsol, 24% nitrogen, and 46% phosphorus). The biomass PAP was evaluated to be in excess of 0.4gPHA/gVSS. Batch fermentation of full-scale WWTP sludge at selected temperatures (35, 42 and 55 °C) produced centrate (6-9.4 gCODVFA/L) of consistent VFA composition, with optimal fermentation performance at 42 °C. Centrate was used to accumulate PHA up to 0.39 gPHA/gVSS. The centrate nutrients are a challenge to the accumulation process but producing a biomass with 0.5 gPHA/gVSS is considered to be realistically achievable within the typically available carbon flows at municipal waste management facilities.
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Affiliation(s)
- F Morgan-Sagastume
- AnoxKaldnes, Veolia Water Technologies, Klosterängsvägen 11A, 226 47 Lund, Sweden.
| | - M Hjort
- AnoxKaldnes, Veolia Water Technologies, Klosterängsvägen 11A, 226 47 Lund, Sweden
| | - D Cirne
- Dept. of Biotechnology and Biosystems, Veolia Recherche et Innovation (VERI) - Centre de Recherche de Maisons Laffitte, Chemin de la Digue - BP 76, 78603 Maisons-Laffitte, France
| | - F Gérardin
- Dept. of Biotechnology and Biosystems, Veolia Recherche et Innovation (VERI) - Centre de Recherche de Maisons Laffitte, Chemin de la Digue - BP 76, 78603 Maisons-Laffitte, France
| | - S Lacroix
- Dept. of Biotechnology and Biosystems, Veolia Recherche et Innovation (VERI) - Centre de Recherche de Maisons Laffitte, Chemin de la Digue - BP 76, 78603 Maisons-Laffitte, France
| | - G Gaval
- Dept. of Biotechnology and Biosystems, Veolia Recherche et Innovation (VERI) - Centre de Recherche de Maisons Laffitte, Chemin de la Digue - BP 76, 78603 Maisons-Laffitte, France
| | - L Karabegovic
- AnoxKaldnes, Veolia Water Technologies, Klosterängsvägen 11A, 226 47 Lund, Sweden
| | - T Alexandersson
- AnoxKaldnes, Veolia Water Technologies, Klosterängsvägen 11A, 226 47 Lund, Sweden
| | - P Johansson
- AnoxKaldnes, Veolia Water Technologies, Klosterängsvägen 11A, 226 47 Lund, Sweden
| | - A Karlsson
- AnoxKaldnes, Veolia Water Technologies, Klosterängsvägen 11A, 226 47 Lund, Sweden
| | - S Bengtsson
- AnoxKaldnes, Veolia Water Technologies, Klosterängsvägen 11A, 226 47 Lund, Sweden
| | - M V Arcos-Hernández
- AnoxKaldnes, Veolia Water Technologies, Klosterängsvägen 11A, 226 47 Lund, Sweden
| | - P Magnusson
- AnoxKaldnes, Veolia Water Technologies, Klosterängsvägen 11A, 226 47 Lund, Sweden
| | - A Werker
- AnoxKaldnes, Veolia Water Technologies, Klosterängsvägen 11A, 226 47 Lund, Sweden
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Kisten Y, Györi N, af Klint E, Rezaei H, Levitsky A, Karlsson A, van Vollenhoven R. A4.19 The quantification of digital activity fluorescence optical imaging of hand and wrist inflammation in rheumatic diseases. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-207259.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Liu BH, Wißmann S, Hu XM, Zhang C, Huang YF, Li CF, Guo GC, Karlsson A, Piilo J, Breuer HP. Locality and universality of quantum memory effects. Sci Rep 2014; 4:6327. [PMID: 25209643 PMCID: PMC4160715 DOI: 10.1038/srep06327] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 08/14/2014] [Indexed: 11/24/2022] Open
Abstract
The modeling and analysis of the dynamics of complex systems often requires to employ non-Markovian stochastic processes. While there is a clear and well-established mathematical definition for non-Markovianity in the case of classical systems, the extension to the quantum regime recently caused a vivid debate, leading to many different proposals for the characterization and quantification of memory effects in the dynamics of open quantum systems. Here, we derive a mathematical representation for the non-Markovianity measure based on the exchange of information between the open system and its environment, which reveals the locality and universality of non-Markovianity in the quantum state space and substantially simplifies its numerical and experimental determination. We further illustrate the application of this representation by means of an all-optical experiment which allows the measurement of the degree of memory effects in a photonic quantum process with high accuracy.
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Affiliation(s)
- B-H Liu
- 1] Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, China [2]
| | - S Wißmann
- 1] Physikalisches Institut, Universität Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany [2]
| | - X-M Hu
- Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, China
| | - C Zhang
- Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, China
| | - Y-F Huang
- Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, China
| | - C-F Li
- Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, China
| | - G-C Guo
- Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, China
| | - A Karlsson
- Turku Centre for Quantum Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turun yliopisto, Finland
| | - J Piilo
- Turku Centre for Quantum Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turun yliopisto, Finland
| | - H-P Breuer
- Physikalisches Institut, Universität Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany
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Győri N, Kisten Y, Rezaei H, Karlsson A, Romanus C, af Klint E, van Vollenhoven R. SAT0223 The Diagnostic Utility of Fluorescence Optical Imaging in Evaluating Synovitis of the Hands and Wrists. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kisten Y, Györi N, Rezaei H, Karlsson A, Romanus C, af Klint E, van Vollenhoven R. AB1024 Clinically “Silent” Synovitis: Detected by Fluorescence Optical Imaging of the Hands & Wrists. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Morgan-Sagastume F, Valentino F, Hjort M, Cirne D, Karabegovic L, Gerardin F, Johansson P, Karlsson A, Magnusson P, Alexandersson T, Bengtsson S, Majone M, Werker A. Polyhydroxyalkanoate (PHA) production from sludge and municipal wastewater treatment. Water Sci Technol 2014; 69:177-184. [PMID: 24434985 DOI: 10.2166/wst.2013.643] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Polyhydroxyalkanoates (PHAs) are biodegradable polyesters with comparable properties to some petroleum-based polyolefins. PHA production can be achieved in open, mixed microbial cultures and thereby coupled to wastewater and solid residual treatment. In this context, waste organic matter is utilised as a carbon source in activated sludge biological treatment for biopolymer synthesis. Within the EU project Routes, the feasibility of PHA production has been evaluated in processes for sludge treatment and volatile fatty acid (VFA) production and municipal wastewater treatment. This PHA production process is being investigated in four units: (i) wastewater treatment with enrichment and production of a functional biomass sustaining PHA storage capacity, (ii) acidogenic fermentation of sludge for VFA production, (iii) PHA accumulation from VFA-rich streams, and (iv) PHA recovery and characterisation. Laboratory- and pilot-scale studies demonstrated the feasibility of municipal wastewater and solid waste treatment alongside production of PHA-rich biomass. The PHA storage capacity of biomass selected under feast-famine with municipal wastewater has been increased up to 34% (g PHA g VSS(-1)) in batch accumulations with acetate during 20 h. VFAs obtained from waste activated sludge fermentation were found to be a suitable feedstock for PHA production.
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Affiliation(s)
| | - F Valentino
- Department of Chemistry, 'Sapienza' University of Rome, P.le Aldo Moro 5, 00185, Rome, Italy
| | - M Hjort
- AnoxKaldnes AB, Klosterängsvägen 11A, 226 47, Lund, Sweden E-mail:
| | - D Cirne
- Department of Biotechnology and Biosystems, Veolia Environnement Recherche et Innovation (VERI), Chemin de la Digue - BP 76, 78603, Maisons-Laffitte, France
| | - L Karabegovic
- AnoxKaldnes AB, Klosterängsvägen 11A, 226 47, Lund, Sweden E-mail:
| | - F Gerardin
- Department of Biotechnology and Biosystems, Veolia Environnement Recherche et Innovation (VERI), Chemin de la Digue - BP 76, 78603, Maisons-Laffitte, France
| | - P Johansson
- AnoxKaldnes AB, Klosterängsvägen 11A, 226 47, Lund, Sweden E-mail:
| | - A Karlsson
- AnoxKaldnes AB, Klosterängsvägen 11A, 226 47, Lund, Sweden E-mail:
| | - P Magnusson
- AnoxKaldnes AB, Klosterängsvägen 11A, 226 47, Lund, Sweden E-mail:
| | - T Alexandersson
- AnoxKaldnes AB, Klosterängsvägen 11A, 226 47, Lund, Sweden E-mail:
| | - S Bengtsson
- AnoxKaldnes AB, Klosterängsvägen 11A, 226 47, Lund, Sweden E-mail:
| | - M Majone
- Department of Chemistry, 'Sapienza' University of Rome, P.le Aldo Moro 5, 00185, Rome, Italy
| | - A Werker
- AnoxKaldnes AB, Klosterängsvägen 11A, 226 47, Lund, Sweden E-mail:
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Berg S, Sundqvist M, Christenson K, Welin A, Björnsdottir H, Bylund J, Wekell P, Söderkvist P, Karlsson A. P02-025 - Homozygous Q705K sequence variant in NLRP3. Pediatr Rheumatol Online J 2013. [PMCID: PMC3953098 DOI: 10.1186/1546-0096-11-s1-a132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Gerdle B, Forsgren MF, Bengtsson A, Leinhard OD, Sören B, Karlsson A, Brandejsky V, Lund E, Lundberg P. Decreased muscle concentrations of ATP and PCR in the quadriceps muscle of fibromyalgia patients--a 31P-MRS study. Eur J Pain 2013; 17:1205-15. [PMID: 23364928 DOI: 10.1002/j.1532-2149.2013.00284.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2012] [Indexed: 01/10/2023]
Abstract
BACKGROUND AND METHODS Fibromyalgia (FMS) has a prevalence of approximately 2% in the population. Central alterations have been described in FMS, but there is not consensus with respect to the role of peripheral factors for the maintenance of FMS. 31P magnetic resonance spectroscopy (31P-MRS) has been used to investigate the metabolism of phosphagens in muscles of FMS patients, but the results in the literature are not in consensus. The aim was to investigate the quantitative content of phosphagens and pH in resting quadriceps muscle of patients with FMS (n = 19) and in healthy controls (CONTROLS; n = 14) using (31) P-MRS. It was also investigated whether the concentrations of these substances correlated with measures of pain and/or physical capacity. RESULTS Significantly lower concentrations of adenosine triphosphate (ATP) and phosphocreatinine (PCr; 28-29% lower) were found in FMS. No significant group differences existed with respect to inorganic phosphate (Pi), Pi/PCr and pH. The quadriceps muscle fat content was significantly higher in FMS than in CONTROLS [FMS: 9.0 ± 0.5% vs. CONTROLS 6.6 ± 0.6%; (mean ± standard error); P = 0.005]. FMS had significantly lower hand and leg capacity according to specific physical test, but there were no group differences in body mass index, subjective activity level and in aerobic fitness. In FMS, the specific physical capacity in the leg and the hand correlated positively with the concentrations of ATP and PCr; no significant correlations were found with pain intensities. CONCLUSIONS Alterations in intramuscular ATP, PCr and fat content in FMS probably reflect a combination of inactivity related to pain and dysfunction of muscle mitochondria.
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Affiliation(s)
- B Gerdle
- Rehabilitation Medicine, Department of Medicine and Health Sciences (IMH), Faculty of Health Sciences, Linköping University, Sweden.
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Bergenheim A, Karlsson A, Stahl A, Sandstrom J, Hartman M, Henriksson R. Prognostic implication of estramustine-binding protein in astrocytoma. Int J Oncol 2012; 7:349-52. [PMID: 21552846 DOI: 10.3892/ijo.7.2.349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Estramustine-binding protein (EMBP) is a glycoprotein shown to be expressed in the cytoplasm of astrocytoma cells. Originally, it was found in rat prostatic tissue and described as a secretory protein. Its expression has been demonstrated to positively correlate with the degree of neoplastic transformation in astrocytoma tissue. EMBP has been proposed to be responsible for a specific and high affinity binding of estramustine in astrocytoma tumor tissue. In this study the expression of EMBP was evaluated by immunohistochemistry and radioimmunoassay in a series of astrocytoma of different grades. Staining intensity and the number of stained cells increased with the degree of malignancy. The levels of EMBP were 1.3-6.2 ng/g tumor tissue with higher levels in tumors of grade III to IV compared to grade I and II. It was found that a high expression of EMBP always implied a short survival of the patients. On the other hand, a low expression of EMBP did not always assure a favorable prognosis. It is proposed that EMBP might have a value to predict survival in patients with astrocytoma, especially if estramustine is to be included in the treatment schedule. However, further extended studies are needed before final conclusions can be made.
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Affiliation(s)
- A Bergenheim
- UMEA UNIV HOSP, DEPT ONCOL, S-90185 UMEA, SWEDEN. AKAD SJUKHUSET, DEPT NEUROPATHOL, UPPSALA, SWEDEN
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Karlsson A, Essen-Gustavsson B, Lundström K. Muscle glycogen depletion pattern in halothane-gene-free pigs at slaughter and its relation to meat quality. Meat Sci 2012; 38:91-101. [PMID: 22059611 DOI: 10.1016/0309-1740(94)90098-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/1993] [Revised: 05/10/1993] [Accepted: 05/17/1993] [Indexed: 11/19/2022]
Abstract
Muscle fibre type composition and glycogen depletion pattern at slaughter as related to meat quality, were studied in M. longissimus dorsi of halothane-gene-free Swedish Yorkshire pigs fed a high (n=19; 10 entire males and 9 gilts) or a low (n=18; 10 entire males and 8 gilts) protein diet. The muscle consisted of, on average, 8% type I, 9% type IIA and 83% type IIB fibres. Muscle fibre areas were significantly smaller in entire male pigs than in gilts irrespective of fibre type. There were no marked differences in muscle characteristics between pigs fed the low and high protein diets. Low glycogen concentrations were found in most type I and type IIA muscle fibres, while a greater variation in glycogen content was evident in type IIB fibres. The pigs were divided into two groups according to the proportion of glycogen depleted IIB fibres (more or less than 30% depleted IIB fibres). In the group where 30% or more of the type IIB fibres were glycogen depleted, a tendency toward DFD meat (dry, firm, dark) was seen, as the meat had higher ultimate pH (5·62 vs 5·52; p=0·02), lower drip loss (2·7% vs 4·4%; p=0·007) and lower reflectance value (darker meat; 16·5 vs 20·6 EEL units; p=0·0005), compared with the group with less than 30% depleted IIB fibres. No difference in total glycogen content was found between these two groups. This indicates that the distribution of glycogen in different fibre types seems to be of importance for the ultimate meat quality.
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Affiliation(s)
- A Karlsson
- Department of Food Science, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden
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Bertrand T, Marquette JP, Karlsson A, Michot N, Virone-Oddos A, Halley F. A structure-based approach to selective PI3Kbeta inihibition. Acta Crystallogr A 2012. [DOI: 10.1107/s0108767312099503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Loman N, Saal LH, Häkkinen J, Vallon-Christersson J, Ringnér M, Hegardt C, Jönsson G, Gruvberger-Saal SK, Kvist A, Reuterswärd C, Schulz R, Karlsson A, Jönsson M, Grabau D, Manjer J, Carlson J, Malina J, Larsson C, Rydén L, Borg A. P3-06-08: SCAN-B: An Accelerated Translational Pipeline from Profile to Prognosis and Prediction for Individual Breast Cancer Patients. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p3-06-08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The South Sweden Cancerome Analysis Network - Breast (SCAN-B) Initiative is a multidisciplinary network of clinical providers of breast cancer (BC) treatment and pre-clinical scientists whose multiyear purpose is to 1) prospectively collect and analyze the “-omes” of a very large, consecutive, and population-based sample of BCs for translational research; 2) utilize this genomic data to develop new clinically-relevant biomarker assays; and 3) to build the infrastructure for future real-time clinical implementation of resultant biomarkers for individualized treatment. Patient enrollment began in the Fall of 2010 at the seven BC surgical units of the South Sweden Healthcare Region, where approximately 1500 new breast cancer diagnoses are treated yearly following the guidelines of the South Sweden Breast Cancer Group. Currently, tumor and blood samples are being collected at the rate of 80–100 patients per month, which represents approximately 75% of the catchment population. SCAN-B will initially focus on tumor transcriptome analysis using mRNA-sequencing on Illumina HiSeq 2000 instruments, and in the future multimodal data generated from other genomic platforms will also be integrated. Here we present initial experiences from this multidisciplinary collaboration including descriptions of the clinical routines, specimen handling, laboratory processing, mRNA-seq data quality control, short- and long-term projects and future directions. We believe large initiatives like SCAN-B could significantly reduce the time to discovery, validation, and clinical implementation of more powerful diagnostic, prognostic, and treatment-predictive tests for breast cancer.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P3-06-08.
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Affiliation(s)
- N Loman
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - LH Saal
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - J Häkkinen
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - J Vallon-Christersson
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - M Ringnér
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - C Hegardt
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - G Jönsson
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - SK Gruvberger-Saal
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - A Kvist
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - C Reuterswärd
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - R Schulz
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - A Karlsson
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - M Jönsson
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - D Grabau
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - J Manjer
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - J Carlson
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - J Malina
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - C Larsson
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - L Rydén
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
| | - Å Borg
- 1Lund University, Lund, Sweden; Skåne University Hospital, Lund, Sweden; Skåne University Hospital, Malmö, Sweden
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Karlsson A, Rosseland BO, Thorarensen H, Kiessling A. Changes in arterial oxygen tension and physiological status in resting, unrestrained Arctic charr Salvelinus alpinus (L.) exposed to mild hypoxia and hyperoxia. J Fish Biol 2011; 78:962-966. [PMID: 21366587 DOI: 10.1111/j.1095-8649.2011.02916.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In arctic charr Salvelinus alpinus, arterial blood partial pressures of oxygen (PaO2) and carbon dioxide increased with increasing water oxygen tension (PwO2), while the water to arterial PO2 difference (PwO2-PaO2) did not change in relation to PwO2.
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Affiliation(s)
- A Karlsson
- Norwegian University of Life Sciences, Department of Plant and Environmental Sciences, P. O. Box 5003, 1432 Ås, Norway.
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Morgan-Sagastume F, Pratt S, Karlsson A, Cirne D, Lant P, Werker A. Production of volatile fatty acids by fermentation of waste activated sludge pre-treated in full-scale thermal hydrolysis plants. Bioresour Technol 2011; 102:3089-97. [PMID: 21075621 DOI: 10.1016/j.biortech.2010.10.054] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 10/11/2010] [Accepted: 10/11/2010] [Indexed: 05/22/2023]
Abstract
This work focuses on fermentation of pre-treated waste activated sludge (WAS) to generate volatile fatty acids (VFAs). Pre-treatment by high-pressure thermal hydrolysis (HPTH) was shown to aid WAS fermentation. Compared to fermentation of raw WAS, pre-treatment enabled a 2-5x increase in VFA yield (gVFA(COD)gTCOD(-1)) and 4-6x increase in VFA production rate (gVFA(COD) L(-1) d(-1)). Three sludges, pre-treated in full-scale HPTH plants, were fermented. One was from a plant processing a mix of primary sludge and WAS and the other two from plants processing solely WAS. The HPTH plants solubilised suspended matter, evidenced by a 20-30% decrease in suspended solids and an increase of soluble COD : total COD from 0.04 to 0.4. Fermentation of the three sludges yielded similar VFA concentrations (15-20gVFA(COD) L(-1)). The yields were largely independent of retention time (1 d-6 d) and temperature (42°C, 55°C). Also, the product spectrum depended mostly on the composition of the sludge rather than on operating conditions.
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Gustavsson J, Svensson BH, Karlsson A. The feasibility of trace element supplementation for stable operation of wheat stillage-fed biogas tank reactors. Water Sci Technol 2011; 64:320-5. [PMID: 22097002 DOI: 10.2166/wst.2011.633] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The aim of this study was to investigate the effect of trace element supplementation on operation of wheat stillage-fed biogas tank reactors. The stillage used was a residue from bio-ethanol production, containing high levels of sulfate. In biogas production, high sulfate content has been associated with poor process stability in terms of low methane production and accumulation of process intermediates. However, the results of the present study show that this problem can be overcome by trace element supplementations. Four lab-scale wheat stillage-fed biogas tank reactors were operated for 345 days at a hydraulic retention time of 20 days (37 degrees C). It was concluded that daily supplementation with Co (0.5 mg L(-1)), Ni (0.2 mg L(-1)) and Fe (0.5 g L(-1)) were required for maintaining process stability at the organic loading rate of 4.0 g volatile solids L(-1) day(-1).
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Affiliation(s)
- J Gustavsson
- Department of Thematic Studies - Water and Environmental Studies, Linköping University, 58183 Linköping, Sweden.
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Virone-Oddos A, Halley F, Delorme C, Bonnevaux H, Nicolas J, Karlsson A, Abecassis P, Vincent L, Lengauer C. 115 Discovery and characterization of PI3Kbeta isoform-selective inhibitors. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71820-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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