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Naessén S, Eliasson M, Berntorp K, Kitlinski M, Trimpou P, Amundson E, Thunström S, Ekman B, Wahlberg J, Karlsson A, Isaksson M, Bergström I, Levelind C, Bryman I, Landin-Wilhelmsen K. Autoimmune Disease in Turner Syndrome in Sweden: An up to 25 Years' Controlled Follow-up Study. J Clin Endocrinol Metab 2024; 109:e602-e612. [PMID: 37758506 PMCID: PMC10795927 DOI: 10.1210/clinem/dgad566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/11/2023] [Accepted: 09/22/2023] [Indexed: 10/02/2023]
Abstract
CONTEXT Turner syndrome (TS) is the most common chromosomal aberration in women; it is the result of structural or numeric abnormalities in the X chromosome. Autoimmune hypothyroidism has been recognized as one of the more prominent disorders associated with TS. OBJECTIVE This work aimed to study the prevalence of autoimmune diseases in TS. METHODS A cross-sectional, longitudinal, 25-year follow-up study was conducted of patients from adult Turner centers at the University Hospitals, Sweden. During 1994 to 2020, a total of 503 women aged 16 to 71 years with TS were evaluated consecutively every fifth year according to national guidelines. A random population sample of women, n = 401, aged 25 to 44 years, from the World Health Organization Monitoring of Trends and Determinants for Cardiovascular Disease (MONICA) project served as controls. Serum thyrotropin, free thyroxine, vitamin B12, antithyroid peroxidase (anti-TPO), and antitransglutaminase antibodies were measured. RESULTS Mean follow-up time (years) was 16 ± 7 for patients and 13 ± 1 for controls. From study start, the prevalence increased in TS for hypothyroidism 40% to 58%, vitamin B12 deficiency 5% to 12%, celiac disease 4% to 7%, positive anti-TPO 26% to 41%, and antitransglutaminase antibodies 6% to 8% (P < .0001 vs controls). Type 1 diabetes and Addison disease were rare. The only interrelationship was between hypothyroidism and vitamin B12 deficiency, both in TS and controls. No association between autoimmune disease and karyotype, antecedent growth hormone treatment, or ongoing estrogen hormone replacement, was seen in TS. CONCLUSION In women with TS up to older than 80 years, more than half developed hypothyroidism, mainly autoimmune, during follow-up. Awareness of vitamin B12 deficiency and celiac disease throughout life is also recommended in women with TS.
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Affiliation(s)
- Sabine Naessén
- Department of Women’s and Children’s Health, Karolinska Institutet, 171 77 Stockholm, Sweden
- Academic Primary Health Care Centre, 117 63 Stockholm, Sweden
| | | | - Kerstin Berntorp
- Genomics, Diabetes and Endocrinology Research Unit, Department of Clinical Sciences Malmö, Lund University, 222 42 Malmö, Sweden
- Department of Endocrinology, Skåne University Hospital, 214 28 Malmö, Sweden
| | - Margareta Kitlinski
- Department of Reproductive Medicine, Skåne University Hospital, 214 28 Malmö, Sweden
| | - Penelope Trimpou
- Section of Endocrinology, Sahlgrenska University Hospital, 413 45 Gothenburg, Sweden
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden
| | - Emily Amundson
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden
- Department of Respiratory Medicine, Sahlgrenska University Hospital, 413 45 Gothenburg, Sweden
| | - Sofia Thunström
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden
- Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, 413 45 Gothenburg, Sweden
| | - Bertil Ekman
- Department of Endocrinology, Linköping University Hospital, 581 85 Linköping, Sweden
| | - Jeanette Wahlberg
- Department of Medicine, Örebro University Hospital, 701 85 Örebro, Sweden
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, 701 12 Örebro, Sweden
| | - Anders Karlsson
- Department of Medical Sciences, Uppsala University, Uppsala University Hospital, 751 85 Uppsala, Sweden
| | - Magnus Isaksson
- Department of Medical Sciences, Uppsala University, Uppsala University Hospital, 751 85 Uppsala, Sweden
| | - Ingrid Bergström
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, 171 77 Solna, Sweden
| | - Carina Levelind
- Department of Women’s and Children’s Health, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Inger Bryman
- Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, 413 45 Gothenburg, Sweden
| | - Kerstin Landin-Wilhelmsen
- Section of Endocrinology, Sahlgrenska University Hospital, 413 45 Gothenburg, Sweden
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 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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Sampels S, Jonsson M, Sandgren M, Karlsson A, Segerkvist KA. Sustainable Delicacy: Variation in Quality and Sensory Aspects in Wild Boar ( Sus scrofa) Meat and Comparison to Pork Meat-A Case Study. Foods 2023; 12:foods12081644. [PMID: 37107439 PMCID: PMC10137630 DOI: 10.3390/foods12081644] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/29/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
The aim of this study was to evaluate quality and sensory variation in wild boar meat in comparison to pork. Meat quality in wild boar is expected to vary more compared to pork due to different feeding environment, age and gender. In order to be able to promote wild boar meat as a sustainable high-quality product, there is a need to evaluate the variation in meat quality attributes, including technological, compositional and sensory/texture aspects. We evaluated carcass characteristics, pH, colour, lipid profile and sensory aspects of wild boar meat of different age and gender and compared them with pork. Wild boars had lower carcass weight (p = <0.0001) and higher ultimate pH (p = 0.0063) compared to domestic pigs. Intramuscular fat content had a tendency to be higher in wild boar meat (p = 0.1010), as well as the proportion of nutritional valuable n-3 FA (p = 0.0029). The colour of pork was more pink (p = 0.0276) and pale (p = <0.0001) compared to meat from wild boar. Meat from wild boar gilts received the highest sensory scores. Based on these findings, we suggest that meat from younger animals could be sold in different cuts directly while meat from older animals might be more suitable for the production of sausage.
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Affiliation(s)
- Sabine Sampels
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, 75007 Uppsala, Sweden
| | - Maja Jonsson
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, 75007 Uppsala, Sweden
| | - Mats Sandgren
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, 75007 Uppsala, Sweden
| | - Anders Karlsson
- Department of Animal Environment and Health, Swedish University of Agricultural Sciences, P.O. Box 234, 53223 Skara, Sweden
| | - Katarina Arvidsson Segerkvist
- Department of Animal Environment and Health, Swedish University of Agricultural Sciences, P.O. Box 234, 53223 Skara, Sweden
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Bankvall M, Carda-Diéguez M, Mira A, Karlsson A, Hasséus B, Karlsson R, Robledo-Sierra J. Metataxonomic and metaproteomic profiling of the oral microbiome in oral lichen planus - a pilot study. J Oral Microbiol 2022; 15:2161726. [PMID: 36605405 PMCID: PMC9809343 DOI: 10.1080/20002297.2022.2161726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Background A growing body of evidence demonstrates a different bacterial composition in the oral cavity of patients with oral lichen planus (OLP). Patients and methods Buccal swab samples were collected from affected and non-affected sites of six patients with reticular OLP and the healthy oral mucosa of six control subjects. 16S rRNA gene MiSeq sequencing and mass spectrometry-based proteomics were utilised to identify the metataxonomic and metaproteomic profiles of the oral microbiome in both groups. Results From the metataxonomic analysis, the most abundant species in the three subgroups were Streptococcus oralis and Pseudomonas aeruginosa, accounting for up to 70% of the total population. Principal Coordinates Analysis showed differential clustering of samples from the healthy and OLP groups. ANCOM-BC compositional analysis revealed multiple species (including P. aeruginosa and several species of Veillonella, Prevotella, Streptococcus and Neisseria) significantly over-represented in the control group and several (including Granulicatella elegans, Gemella haemolysans and G. parahaemolysans) in patients with OLP. The metaproteomic data were generally congruent and revealed that several Gemella haemolysans-belonging peptidases and other proteins with inflammatory and virulence potential were present in OLP lesions. Conclusion Our data suggest that several bacterial species are associated with OLP. Future studies with larger cohorts should be conducted to determine their role in the aetiology of OLP and evaluate their potential as disease biomarkers.
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Affiliation(s)
- Maria Bankvall
- Department of Dental Medicine, Karolinska Institute, Huddinge, Sweden
| | - Miguel Carda-Diéguez
- Department of Health and Genomics, Center for Advanced Research in Public Health, FISABIO Foundation, Valencia, Spain
| | - Alex Mira
- Department of Health and Genomics, Center for Advanced Research in Public Health, FISABIO Foundation, Valencia, Spain,School of Health and Welfare, Jönköping University, Jönköping, Sweden
| | | | - Bengt Hasséus
- Department of Oral Medicine and Pathology, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Roger Karlsson
- Clinical microbiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Jairo Robledo-Sierra
- Nanoxis Consulting AB, Gothenburg, Sweden,Faculty of Dentistry, CES University, Medellin, Colombia,CONTACT Jairo Robledo-Sierra Faculty of Dentistry, CES University, Medellin, Colombia
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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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Gutiérrez AW, Karlsson A. Comments on the cosmic convergence of nonexpansive maps. J Fixed Point Theory Appl 2021; 23:59. [PMID: 34803575 PMCID: PMC8591709 DOI: 10.1007/s11784-021-00896-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
This note discusses some aspects of the asymptotic behaviour of nonexpansive maps. Using metric functionals, we make a connection to the invariant subspace problem and prove a new result for nonexpansive maps of ℓ 1 . We also point out some inaccurate assertions appearing in the literature on this topic.
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Affiliation(s)
| | - Anders Karlsson
- Section de Mathématiques, Université de Genève, 2-4 Rue du Lièvre, Case Postale 64, 1211 Genève 4, Switzerland
- Matematiska Institutionen, Uppsala Universitet, Box 256, 751 05 Uppsala, Sweden
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Kondori N, Kurtovic A, Piñeiro-Iglesias B, Salvà-Serra F, Jaén-Luchoro D, Andersson B, Alves G, Ogurtsov A, Thorsell A, Fuchs J, Tunovic T, Kamenska N, Karlsson A, Yu YK, Moore ERB, Karlsson R. Mass Spectrometry Proteotyping-Based Detection and Identification of Staphylococcus aureus, Escherichia coli, and Candida albicans in Blood. Front Cell Infect Microbiol 2021; 11:634215. [PMID: 34381737 PMCID: PMC8350517 DOI: 10.3389/fcimb.2021.634215] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 07/09/2021] [Indexed: 12/12/2022] Open
Abstract
Bloodstream infections (BSIs), the presence of microorganisms in blood, are potentially serious conditions that can quickly develop into sepsis and life-threatening situations. When assessing proper treatment, rapid diagnosis is the key; besides clinical judgement performed by attending physicians, supporting microbiological tests typically are performed, often requiring microbial isolation and culturing steps, which increases the time required for confirming positive cases of BSI. The additional waiting time forces physicians to prescribe broad-spectrum antibiotics and empirically based treatments, before determining the precise cause of the disease. Thus, alternative and more rapid cultivation-independent methods are needed to improve clinical diagnostics, supporting prompt and accurate treatment and reducing the development of antibiotic resistance. In this study, a culture-independent workflow for pathogen detection and identification in blood samples was developed, using peptide biomarkers and applying bottom-up proteomics analyses, i.e., so-called "proteotyping". To demonstrate the feasibility of detection of blood infectious pathogens, using proteotyping, Escherichia coli and Staphylococcus aureus were included in the study, as the most prominent bacterial causes of bacteremia and sepsis, as well as Candida albicans, one of the most prominent causes of fungemia. Model systems including spiked negative blood samples, as well as positive blood cultures, without further culturing steps, were investigated. Furthermore, an experiment designed to determine the incubation time needed for correct identification of the infectious pathogens in blood cultures was performed. The results for the spiked negative blood samples showed that proteotyping was 100- to 1,000-fold more sensitive, in comparison with the MALDI-TOF MS-based approach. Furthermore, in the analyses of ten positive blood cultures each of E. coli and S. aureus, both the MALDI-TOF MS-based and proteotyping approaches were successful in the identification of E. coli, although only proteotyping could identify S. aureus correctly in all samples. Compared with the MALDI-TOF MS-based approaches, shotgun proteotyping demonstrated higher sensitivity and accuracy, and required significantly shorter incubation time before detection and identification of the correct pathogen could be accomplished.
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Affiliation(s)
- Nahid Kondori
- Department of Infectious Diseases, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Microbiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Amra Kurtovic
- Department of Clinical Microbiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | | | - Francisco Salvà-Serra
- Department of Infectious Diseases, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Microbiology, Sahlgrenska University Hospital, Gothenburg, Sweden
- Culture Collection University of Gothenburg (CCUG), Sahlgrenska Academy of the University of Gothenburg, Gothenburg, Sweden
- Microbiology, Department of Biology, University of the Balearic Islands, Palma de Mallorca, Spain
| | - Daniel Jaén-Luchoro
- Department of Infectious Diseases, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Culture Collection University of Gothenburg (CCUG), Sahlgrenska Academy of the University of Gothenburg, Gothenburg, Sweden
| | - Björn Andersson
- Bioinformatics Core Facility at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Gelio Alves
- National Center for Biotechnology Information (NCBI), Bethesda, MD, United States
| | - Aleksey Ogurtsov
- National Center for Biotechnology Information (NCBI), Bethesda, MD, United States
| | - Annika Thorsell
- Proteomics Core Facility at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Johannes Fuchs
- Proteomics Core Facility at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Timur Tunovic
- Department of Clinical Microbiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Nina Kamenska
- Norra-Älvsborgs-Länssjukhus (NÄL), Trollhättan, Sweden
| | | | - Yi-Kuo Yu
- National Center for Biotechnology Information (NCBI), Bethesda, MD, United States
| | - Edward R. B. Moore
- Department of Infectious Diseases, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Microbiology, Sahlgrenska University Hospital, Gothenburg, Sweden
- Culture Collection University of Gothenburg (CCUG), Sahlgrenska Academy of the University of Gothenburg, Gothenburg, Sweden
| | - Roger Karlsson
- Department of Infectious Diseases, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Microbiology, Sahlgrenska University Hospital, Gothenburg, Sweden
- Nanoxis Consulting AB, Gothenburg, Sweden
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Abstract
This article presents the beginning of a metric functional analysis. A major notion is metric functionals which extends that of horofunctions in metric geometry. Applications of the main tools are found in a wide variety of subjects such as random walks on groups, complex dynamics, surface topology, deep learning, evolution equations, and game theory, thus branching well outside of pure mathematics. In several cases, linear notions fail to describe linear phenomena that are naturally captured by metric concepts. An extension of the mean ergodic theorem testifies to this. A general metric fixed-point theorem is also proved.
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Affiliation(s)
- Anders Karlsson
- Section de Mathématiques, Université de Genève, 1211 Geneva 4, Switzerland;
- Matematiska Institutionen, Uppsala Universitet, 751 05 Uppsala, Sweden
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11
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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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12
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Trkulja CL, Jungholm O, Davidson M, Jardemark K, Marcus MM, Hägglund J, Karlsson A, Karlsson R, Bruton J, Ivarsson N, Srinivasa SP, Cavallin A, Svensson P, Jeffries GDM, Christakopoulou MN, Reymer A, Ashok A, Willman G, Papadia D, Johnsson E, Orwar O. Rational antibody design for undruggable targets using kinetically controlled biomolecular probes. Sci Adv 2021; 7:7/16/eabe6397. [PMID: 33863724 PMCID: PMC8051879 DOI: 10.1126/sciadv.abe6397] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 02/26/2021] [Indexed: 05/07/2023]
Abstract
Several important drug targets, e.g., ion channels and G protein-coupled receptors, are extremely difficult to approach with current antibody technologies. To address these targets classes, we explored kinetically controlled proteases as structural dynamics-sensitive druggability probes in native-state and disease-relevant proteins. By using low-Reynolds number flows, such that a single or a few protease incisions are made, we could identify antibody binding sites (epitopes) that were translated into short-sequence antigens for antibody production. We obtained molecular-level information of the epitope-paratope region and could produce high-affinity antibodies with programmed pharmacological function against difficult-to-drug targets. We demonstrate the first stimulus-selective monoclonal antibodies targeting the transient receptor potential vanilloid 1 (TRPV1) channel, a clinically validated pain target widely considered undruggable with antibodies, and apoptosis-inducing antibodies selectively mediating cytotoxicity in KRAS-mutated cells. It is our hope that this platform will widen the scope of antibody therapeutics for the benefit of patients.
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Affiliation(s)
| | - Oscar Jungholm
- Department of Physiology and Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Max Davidson
- Oblique Therapeutics AB, SE-41346 Gothenburg, Sweden
| | - Kent Jardemark
- Department of Physiology and Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Monica M Marcus
- Department of Physiology and Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Jessica Hägglund
- Oblique Therapeutics AB, SE-41346 Gothenburg, Sweden
- Department of Physiology and Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Anders Karlsson
- Oblique Therapeutics AB, SE-41346 Gothenburg, Sweden
- Nanoxis Consulting AB, SE-40016 Gothenburg, Sweden
| | - Roger Karlsson
- Oblique Therapeutics AB, SE-41346 Gothenburg, Sweden
- Nanoxis Consulting AB, SE-40016 Gothenburg, Sweden
| | - Joseph Bruton
- Department of Physiology and Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Niklas Ivarsson
- Department of Physiology and Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | | | - Alexandra Cavallin
- Department of Physiology and Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Peder Svensson
- Integrative Research Laboratories, SE-41346, Gothenburg, Sweden
| | | | | | - Anna Reymer
- Oblique Therapeutics AB, SE-41346 Gothenburg, Sweden
- Department of Chemistry and Molecular Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | | | | | | | - Emma Johnsson
- Oblique Therapeutics AB, SE-41346 Gothenburg, Sweden
| | - Owe Orwar
- Oblique Therapeutics AB, SE-41346 Gothenburg, Sweden.
- Department of Physiology and Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
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13
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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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14
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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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15
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Mann J, Cohen M, Abend A, Coutant C, Ashworth L, Shaw R, Reynolds G, Nir I, Shah V, Shaw S, Patel A, Lu X, Cicale V, McCallum M, Patel S, Topolski J, Prüfer S, Tomaszewska I, Kourentas A, Mueller-Zsigmondy M, Williams J, Ainge M, Berben P, Bouquelle A, Abrahamsson B, Karlsson A, Varghese R, Li F, Orce A, Nickerson B, Shao X. Stimuli to the Revision Process: The Case for Apex Vessels. DISSOLUT TECHNOL 2021. [DOI: 10.14227/dt280421p6] [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: 10/19/2022]
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16
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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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17
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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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18
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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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19
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Wolden R, Pain M, Karlsson R, Karlsson A, Aarag Fredheim EG, Cavanagh JP. Identification of surface proteins in a clinical Staphylococcus haemolyticus isolate by bacterial surface shaving. BMC Microbiol 2020; 20:80. [PMID: 32264835 PMCID: PMC7137321 DOI: 10.1186/s12866-020-01778-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 01/13/2020] [Accepted: 03/31/2020] [Indexed: 02/06/2023] Open
Abstract
Background The skin commensal Staphylococcus haemolyticus is an emerging nosocomial pathogen. Despite its clinical relevance, published information about S. haemolyticus virulence factors is scarce. In this study, the adhesive and biofilm forming properties of ten clinical and ten commensal S. haemolyticus strains were examined using standard adhesion and biofilm assays. One of the clinical strains was used to identify expressed surface proteins using bacterial surface shaving. Protein abundance was examined by a comparative analysis between bacterial protein expression after human keratinocyte (HaCaT) colonization and growth in cell culture media supplemented with serum. Relative protein quantification was performed by labeling peptides with tandem mass tags (TMT) prior to Mass Spectrometry analysis. Surface proteins can be used as novel targets for antimicrobial treatment and in diagnostics. Results Adherence to fibronectin, collagen and plastic was low in all tested strains, but with significantly higher adhesion to fibronectin (p = 0.041) and collagen (p = 0.001) in the commensal strains. There was a trend towards higher degree of biofilm formation in the clinical strains (p = 0.059). By using surface shaving, 325 proteins were detected, of which 65 were classified as surface proteins. Analyses showed that the abundance of nineteen (5.8%) proteins were significantly changed following HaCaT colonization. The bacterial Toll/interleukin-1 like (TIRs) domain containing protein (p = 0.04), the transglycosylase SceD (p = 0.01), and the bifunctional autolysin Atl (p = 0.04) showed a 1.4, 1.6- and 1.5-fold increased abundance. The staphylococcal secretory antigen (SsaA) (p = 0.04) was significantly downregulated (− 1.5 fold change) following HaCaT colonization. Among the 65 surface proteins the elastin binding protein (Ebps), LPXAG and LPXSG domain containing proteins and five LPXTG domain containing proteins were identified; three Sdr-like proteins, the extracellular matrix binding protein Embp and a SasH-like protein. Conclusions This study has provided novel knowledge about expression of S. haemolyticus surface proteins after direct contact with eukaryotic cells and in media supplemented with serum. We have identified surface proteins and immune evasive proteins previously only functionally described in other staphylococcal species. The identification of expressed proteins after host-microbe interaction offers a tool for the discovery and design of novel targets for antimicrobial treatment.
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Affiliation(s)
- Runa Wolden
- Pediatric Research group, Department of Clinical Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| | - Maria Pain
- Pediatric Research group, Department of Clinical Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| | - Roger Karlsson
- Nanoxis Consulting AB, Gothenburg, Sweden.,Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Microbiology, Sahlgrenska University Hospital, SE-413 46, Gothenburg, Region Västra Götaland, Sweden
| | | | - Elizabeth G Aarag Fredheim
- Microbial Pharmacology and Population Biology, Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| | - Jorunn Pauline Cavanagh
- Pediatric Research group, Department of Clinical Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway. .,Department of Pediatrics, The University Hospital of North Norway, Tromsø, Norway.
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20
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Karlsson R, Thorsell A, Gomila M, Salvà-Serra F, Jakobsson HE, Gonzales-Siles L, Jaén-Luchoro D, Skovbjerg S, Fuchs J, Karlsson A, Boulund F, Johnning A, Kristiansson E, Moore ERB. Discovery of Species-unique Peptide Biomarkers of Bacterial Pathogens by Tandem Mass Spectrometry-based Proteotyping. Mol Cell Proteomics 2020; 19:518-528. [PMID: 31941798 PMCID: PMC7050107 DOI: 10.1074/mcp.ra119.001667] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 01/14/2020] [Indexed: 01/11/2023] Open
Abstract
Mass spectrometry (MS) and proteomics offer comprehensive characterization and identification of microorganisms and discovery of protein biomarkers that are applicable for diagnostics of infectious diseases. The use of biomarkers for diagnostics is widely applied in the clinic and the use of peptide biomarkers is increasingly being investigated for applications in the clinical laboratory. Respiratory-tract infections are a predominant cause for medical treatment, although, clinical assessments and standard clinical laboratory protocols are time-consuming and often inadequate for reliable diagnoses. Novel methods, preferably applied directly to clinical samples, excluding cultivation steps, are needed to improve diagnostics of infectious diseases, provide adequate treatment and reduce the use of antibiotics and associated development of antibiotic resistance. This study applied nano-liquid chromatography (LC) coupled with tandem MS, with a bioinformatics pipeline and an in-house database of curated high-quality reference genome sequences to identify species-unique peptides as potential biomarkers for four bacterial pathogens commonly found in respiratory tract infections (RTIs): Staphylococcus aureus; Moraxella catarrhalis; Haemophilus influenzae and Streptococcus pneumoniae The species-unique peptides were initially identified in pure cultures of bacterial reference strains, reflecting the genomic variation in the four species and, furthermore, in clinical respiratory tract samples, without prior cultivation, elucidating proteins expressed in clinical conditions of infection. For each of the four bacterial pathogens, the peptide biomarker candidates most predominantly found in clinical samples, are presented. Data are available via ProteomeXchange with identifier PXD014522. As proof-of-principle, the most promising species-unique peptides were applied in targeted tandem MS-analyses of clinical samples and their relevance for identifications of the pathogens, i.e. proteotyping, was validated, thus demonstrating their potential as peptide biomarker candidates for diagnostics of infectious diseases.
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Affiliation(s)
- Roger Karlsson
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy of the University of Gothenburg, SE-40234 Gothenburg, Sweden; Department of Clinical Microbiology, Sahlgrenska University Hospital, SE-413 46 Gothenburg, Region Västra Götaland, Sweden; Centre for Antibiotic Resistance Research (CARe), University of Gothenburg, SE-40234 Gothenburg, Sweden; Nanoxis Consulting AB, SE-40016 Gothenburg, Sweden.
| | - Annika Thorsell
- Proteomics Core Facility at Sahlgrenska Academy, University of Gothenburg, SE- 40530 Gothenburg, Sweden
| | - Margarita Gomila
- Microbiology, Department of Biology, University of the Balearic Islands, E-07122, Palma de Mallorca, Spain
| | - Francisco Salvà-Serra
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy of the University of Gothenburg, SE-40234 Gothenburg, Sweden; Department of Clinical Microbiology, Sahlgrenska University Hospital, SE-413 46 Gothenburg, Region Västra Götaland, Sweden; Culture Collection University of Gothenburg (CCUG), Sahlgrenska Academy of the University of Gothenburg, SE-41346 Gothenburg, Sweden; Centre for Antibiotic Resistance Research (CARe), University of Gothenburg, SE-40234 Gothenburg, Sweden; Microbiology, Department of Biology, University of the Balearic Islands, E-07122, Palma de Mallorca, Spain
| | - Hedvig E Jakobsson
- Department of Clinical Microbiology, Sahlgrenska University Hospital, SE-413 46 Gothenburg, Region Västra Götaland, Sweden; Centre for Antibiotic Resistance Research (CARe), University of Gothenburg, SE-40234 Gothenburg, Sweden
| | - Lucia Gonzales-Siles
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy of the University of Gothenburg, SE-40234 Gothenburg, Sweden; Department of Clinical Microbiology, Sahlgrenska University Hospital, SE-413 46 Gothenburg, Region Västra Götaland, Sweden; Centre for Antibiotic Resistance Research (CARe), University of Gothenburg, SE-40234 Gothenburg, Sweden
| | - Daniel Jaén-Luchoro
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy of the University of Gothenburg, SE-40234 Gothenburg, Sweden; Department of Clinical Microbiology, Sahlgrenska University Hospital, SE-413 46 Gothenburg, Region Västra Götaland, Sweden; Centre for Antibiotic Resistance Research (CARe), University of Gothenburg, SE-40234 Gothenburg, Sweden
| | - Susann Skovbjerg
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy of the University of Gothenburg, SE-40234 Gothenburg, Sweden; Department of Clinical Microbiology, Sahlgrenska University Hospital, SE-413 46 Gothenburg, Region Västra Götaland, Sweden; Centre for Antibiotic Resistance Research (CARe), University of Gothenburg, SE-40234 Gothenburg, Sweden
| | - Johannes Fuchs
- Proteomics Core Facility at Sahlgrenska Academy, University of Gothenburg, SE- 40530 Gothenburg, Sweden
| | | | - Fredrik Boulund
- Center for Translational Microbiome Research (CTMR), Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, Stockholm, Sweden; Department of Mathematical Sciences, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
| | - Anna Johnning
- Centre for Antibiotic Resistance Research (CARe), University of Gothenburg, SE-40234 Gothenburg, Sweden; Department of Mathematical Sciences, Chalmers University of Technology, SE-41296 Gothenburg, Sweden; Department of Systems and Data Analysis, Fraunhofer-Chalmers Centre, Chalmers Science Park, SE-412 88 Gothenburg, Sweden
| | - Erik Kristiansson
- Centre for Antibiotic Resistance Research (CARe), University of Gothenburg, SE-40234 Gothenburg, Sweden; Department of Mathematical Sciences, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
| | - Edward R B Moore
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy of the University of Gothenburg, SE-40234 Gothenburg, Sweden; Department of Clinical Microbiology, Sahlgrenska University Hospital, SE-413 46 Gothenburg, Region Västra Götaland, Sweden; Culture Collection University of Gothenburg (CCUG), Sahlgrenska Academy of the University of Gothenburg, SE-41346 Gothenburg, Sweden; Centre for Antibiotic Resistance Research (CARe), University of Gothenburg, SE-40234 Gothenburg, Sweden
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Johansson E, Karlsson A, Ludvigsson JW. Ultra high performance liquid chromatography method development for separation of omeprazole and related substances on core‐shell columns using a Quality by Design approach. J Sep Sci 2020; 43:696-707. [DOI: 10.1002/jssc.201900726] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 11/08/2019] [Accepted: 11/11/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Emma Johansson
- Global Product DevelopmentPharmaceutical Technology and DevelopmentAstraZeneca R&D Gothenburg Mölndal Sweden
| | - Anders Karlsson
- Global Product DevelopmentPharmaceutical Technology and DevelopmentAstraZeneca R&D Gothenburg Mölndal Sweden
| | - Jufang Wu Ludvigsson
- Manufacturing Science and TechnologyPharmaceutical Technology and DevelopmentAstraZeneca R&D Gothenburg Mölndal Sweden
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Schepaschenko D, Chave J, Phillips OL, Lewis SL, Davies SJ, Réjou-Méchain M, Sist P, Scipal K, Perger C, Herault B, Labrière N, Hofhansl F, Affum-Baffoe K, Aleinikov A, Alonso A, Amani C, Araujo-Murakami A, Armston J, Arroyo L, Ascarrunz N, Azevedo C, Baker T, Bałazy R, Bedeau C, Berry N, Bilous AM, Bilous SY, Bissiengou P, Blanc L, Bobkova KS, Braslavskaya T, Brienen R, Burslem DFRP, Condit R, Cuni-Sanchez A, Danilina D, Del Castillo Torres D, Derroire G, Descroix L, Sotta ED, d'Oliveira MVN, Dresel C, Erwin T, Evdokimenko MD, Falck J, Feldpausch TR, Foli EG, Foster R, Fritz S, Garcia-Abril AD, Gornov A, Gornova M, Gothard-Bassébé E, Gourlet-Fleury S, Guedes M, Hamer KC, Susanty FH, Higuchi N, Coronado ENH, Hubau W, Hubbell S, Ilstedt U, Ivanov VV, Kanashiro M, Karlsson A, Karminov VN, Killeen T, Koffi JCK, Konovalova M, Kraxner F, Krejza J, Krisnawati H, Krivobokov LV, Kuznetsov MA, Lakyda I, Lakyda PI, Licona JC, Lucas RM, Lukina N, Lussetti D, Malhi Y, Manzanera JA, Marimon B, Junior BHM, Martinez RV, Martynenko OV, Matsala M, Matyashuk RK, Mazzei L, Memiaghe H, Mendoza C, Mendoza AM, Moroziuk OV, Mukhortova L, Musa S, Nazimova DI, Okuda T, Oliveira LC, Ontikov PV, Osipov AF, Pietsch S, Playfair M, Poulsen J, Radchenko VG, Rodney K, Rozak AH, Ruschel A, Rutishauser E, See L, Shchepashchenko M, Shevchenko N, Shvidenko A, Silveira M, Singh J, Sonké B, Souza C, Stereńczak K, Stonozhenko L, Sullivan MJP, Szatniewska J, Taedoumg H, Ter Steege H, Tikhonova E, Toledo M, Trefilova OV, Valbuena R, Gamarra LV, Vasiliev S, Vedrova EF, Verhovets SV, Vidal E, Vladimirova NA, Vleminckx J, Vos VA, Vozmitel FK, Wanek W, West TAP, Woell H, Woods JT, Wortel V, Yamada T, Nur Hajar ZS, Zo-Bi IC. The Forest Observation System, building a global reference dataset for remote sensing of forest biomass. Sci Data 2019; 6:198. [PMID: 31601817 PMCID: PMC6787017 DOI: 10.1038/s41597-019-0196-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 08/19/2019] [Indexed: 11/09/2022] Open
Abstract
Forest biomass is an essential indicator for monitoring the Earth's ecosystems and climate. It is a critical input to greenhouse gas accounting, estimation of carbon losses and forest degradation, assessment of renewable energy potential, and for developing climate change mitigation policies such as REDD+, among others. Wall-to-wall mapping of aboveground biomass (AGB) is now possible with satellite remote sensing (RS). However, RS methods require extant, up-to-date, reliable, representative and comparable in situ data for calibration and validation. Here, we present the Forest Observation System (FOS) initiative, an international cooperation to establish and maintain a global in situ forest biomass database. AGB and canopy height estimates with their associated uncertainties are derived at a 0.25 ha scale from field measurements made in permanent research plots across the world's forests. All plot estimates are geolocated and have a size that allows for direct comparison with many RS measurements. The FOS offers the potential to improve the accuracy of RS-based biomass products while developing new synergies between the RS and ground-based ecosystem research communities.
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Affiliation(s)
- Dmitry Schepaschenko
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria.
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia.
| | - Jérôme Chave
- Laboratoire Evolution et Diversité Biologique CNRS/Université Paul Sabatier, Toulouse, France
| | | | - Simon L Lewis
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
- University College London, 30 Guilford Street, London, WC1N 1EH, UK
| | - Stuart J Davies
- Forest Global Earth Observatory, Smithsonian Tropical Research Institute, P.O. Box 37012, Washington 20013, USA
| | | | - Plinio Sist
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
| | - Klaus Scipal
- European Space Agency, ESTEC, Noordwijk, The Netherlands
| | - Christoph Perger
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
- Spatial Focus GmbH, Vienna, Austria
| | - Bruno Herault
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
- Department Foresterie et Environnement (DFR FOREN), Institut National Polytechnique Félix Houphouët-Boigny, INP-HB, Yamoussoukro, BP 2661, Côte d'Ivoire
| | - Nicolas Labrière
- Laboratoire Evolution et Diversité Biologique CNRS/Université Paul Sabatier, Toulouse, France
| | - Florian Hofhansl
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Kofi Affum-Baffoe
- Mensuration Unit, Forestry Commission of Ghana, 4 Third Avenue Ridge, Kumasi, POB M434, Ghana
| | - Alexei Aleinikov
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Alfonso Alonso
- Smithsonian Conservation Biology Institute, 1100 Jefferson Dr SW, Suite 3123, Washington, DC, 20560-0705, USA
| | - Christian Amani
- Centre for International Forestry Research, CIFOR, Jalan CIFOR, Situ Gede, Bogor, 16115, Indonesia
| | | | - John Armston
- Department of Geographical Sciences, University of Maryland, 2181 Lefrak Hall, College Park, MD, 20742, USA
- Joint Remote Sensing Research Program, School of Earth and Environmental Sciences, University of Queensland, Chamberlain Building (35), Campbell Road, St Lucia Campus, Brisbane, 4072, Australia
| | - Luzmila Arroyo
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno Av. Irala 565 - casilla, 2489, Santa Cruz, Bolivia
| | - Nataly Ascarrunz
- IBIF, Instituto Boliviano de Investigacion Forestal, Av. 6 de agosto # 28, Km 14 doble via La Guardia, Santa Cruz, Casilla, 6204, Bolivia
| | - Celso Azevedo
- Embrapa, Rodovia AM 10, km 29, Manaus, AM, 69010-970, Brazil
| | - Timothy Baker
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
| | - Radomir Bałazy
- Forest Research Institute, Department of Geomatics, Braci Leśnej 3, Sękocin Stary, Raszyn, 05-090, Poland
| | - Caroline Bedeau
- ONF, ONF-Réserve de Montabo Cayenne Cedex, Cayenne, BP 7002; 97307, French Guiana
| | - Nicholas Berry
- The Landscapes and Livelihoods Group, 20 Chambers St, Edinburgh, EH1 1JZ, UK
| | - Andrii M Bilous
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Svitlana Yu Bilous
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | | | - Lilian Blanc
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
| | - Kapitolina S Bobkova
- Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Sciences, Kommunisticheskaya 28, Syktyvkar, 167982, Russia
| | - Tatyana Braslavskaya
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Roel Brienen
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
| | - David F R P Burslem
- School of Biological Sciences, University of Aberdeen, Cruickshank Building, St Machar Drive, Aberdeen, AB24 3UU, UK
| | - Richard Condit
- Morton Arboretum, 4100 Illinois Rte. 53, Lisle, 60532, IL, USA
| | - Aida Cuni-Sanchez
- Department of Environment and Geography, University of York, Heslington, York, YO10 5NG, UK
| | - Dilshad Danilina
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Dennis Del Castillo Torres
- Instituto de Investigaciones de la Amazonía Peruana, Av. Abelardo Quiñones km 2.5, Iquitos, Apartado Postal 784, Peru
| | - Géraldine Derroire
- CIRAD, UMR EcoFoG, Campus Agronomique - BP 701, Kourou, 97387, France, French Guiana
| | - Laurent Descroix
- ONF, ONF-Réserve de Montabo Cayenne Cedex, Cayenne, BP 7002; 97307, French Guiana
| | - Eleneide Doff Sotta
- Embrapa, Rodovia Juscelino Kubitscheck, Km 5, no 2.600, Macapa, Caixa Postal 10, CEP: 68903-419, Brazil
| | | | - Christopher Dresel
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
- Spatial Focus GmbH, Vienna, Austria
| | - Terry Erwin
- SI Entomology, Smithsonian Institution, PO Box 37012, MRC 187, Washington, DC, DC 20013-7012, USA
| | - Mikhail D Evdokimenko
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Jan Falck
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Ted R Feldpausch
- Geography, College of Life and Environmental Sciences, University of Exeter,Laver Building, North Park Road, Exeter, EX4 4QE, UK
| | - Ernest G Foli
- Forestry Research Institute of Ghana, UP Box 63, KNUST, Kumasi, Ghana
| | - Robin Foster
- The Field Musium, 1400S Lake Shore Dr, Chicago, IL, 60605, USA
| | - Steffen Fritz
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | | | - Aleksey Gornov
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Maria Gornova
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Ernest Gothard-Bassébé
- Institut Centrafricain de Recherche Agronomique, ICRA, BP 122, Bangui, Central African Republic
| | - Sylvie Gourlet-Fleury
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
| | - Marcelino Guedes
- Embrapa, Rodovia Juscelino Kubitscheck, Km 5, no 2.600, Macapa, Caixa Postal 10, CEP: 68903-419, Brazil
| | - Keith C Hamer
- School of Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Farida Herry Susanty
- FOERDIA, Forestry and Environment Research Development and Innovation Agency, Jalan Gunung Batu No 5, Bogor, 16610, Indonesia
| | - Niro Higuchi
- Instituto Nacional de Pesquisas da Amazônia - Coordenação de Pesquisas em Silvicultura Tropical, Manaus, 69060-001, Brazil
| | - Eurídice N Honorio Coronado
- Instituto de Investigaciones de la Amazonía Peruana, Av. Abelardo Quiñones km 2.5, Iquitos, Apartado Postal 784, Peru
| | - Wannes Hubau
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
- U Gent-Woodlab, Laboratory of Wood Technology, Department of Environment, Ghent University, Ghent, 9000, Belgium
| | - Stephen Hubbell
- Department of Ecology and Evolutionary Biology, University of California, 621 Charles E. Young Dr. South, Los Angeles, CA, 90095-1606, USA
| | - Ulrik Ilstedt
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Viktor V Ivanov
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Milton Kanashiro
- Embrapa Amazonia Oriental, Travessa Doutor Enéas Pinheiro, Belém, PA, 66095-903, Brazil
| | - Anders Karlsson
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Viktor N Karminov
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Timothy Killeen
- World Wildlife Fund, Calle Diego de Mendoza 299, Santa Cruz de la Sierra, Bolivia
| | | | - Maria Konovalova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Florian Kraxner
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Jan Krejza
- Global Change Research Institute CAS, Bělidla 986/4a, Brno, 603 00, Czech Republic
| | - Haruni Krisnawati
- FOERDIA, Forestry and Environment Research Development and Innovation Agency, Jalan Gunung Batu No 5, Bogor, 16610, Indonesia
| | - Leonid V Krivobokov
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Mikhail A Kuznetsov
- Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Sciences, Kommunisticheskaya 28, Syktyvkar, 167982, Russia
| | - Ivan Lakyda
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Petro I Lakyda
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Juan Carlos Licona
- IBIF, Instituto Boliviano de Investigacion Forestal, Av. 6 de agosto # 28, Km 14 doble via La Guardia, Santa Cruz, Casilla, 6204, Bolivia
| | - Richard M Lucas
- Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, SY23 3DB, UK
| | - Natalia Lukina
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Daniel Lussetti
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Yadvinder Malhi
- School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
| | | | - Beatriz Marimon
- Laboratório de Ecologia Vegetal, Universidade do Estado de Mato Grosso, UNEMAT, Campus de Nova Xavantina, Nova Xavantina, Mato Grosso, 78.690-000, Brazil
| | - Ben Hur Marimon Junior
- Laboratório de Ecologia Vegetal, Universidade do Estado de Mato Grosso, UNEMAT, Campus de Nova Xavantina, Nova Xavantina, Mato Grosso, 78.690-000, Brazil
| | | | - Olga V Martynenko
- Russian Institute of Continuous Education in Forestry, Institutskaya 17, Pushkino, 141200, Russia
| | - Maksym Matsala
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Raisa K Matyashuk
- Institute for Evolutionary Ecology of the National Academy of Sciences of Ukraine, Lebedev 37, Kyiv, 03143, Ukraine
| | - Lucas Mazzei
- Embrapa Amazonia Oriental, Travessa Doutor Enéas Pinheiro, Belém, PA, 66095-903, Brazil
| | - Hervé Memiaghe
- University of Oregon, 1585 E 13th Ave, Eugene, OR, 97403, USA
| | | | - Abel Monteagudo Mendoza
- Jardín Botánico de Missouri; Universidad Nacional de San Antonio Abad del Cusco, Oxapampa, Peru
| | - Olga V Moroziuk
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Liudmila Mukhortova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Samsudin Musa
- FRIM Forest Reserach Institute of Malaysia, 52109 Kepong, Selangor, Kuala Lumpur, Malaysia
| | - Dina I Nazimova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Toshinori Okuda
- Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8521, Japan
| | | | - Petr V Ontikov
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia
| | - Andrey F Osipov
- Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Sciences, Kommunisticheskaya 28, Syktyvkar, 167982, Russia
| | - Stephan Pietsch
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Maureen Playfair
- Center for Agricultural research in Suriname, CELOS, 1914, Paramaribo, Suriname
| | - John Poulsen
- Nicholas School of the Environment, Duke University, P.O. Box 90328, Durham, NC, 27708, USA
| | - Vladimir G Radchenko
- Institute for Evolutionary Ecology of the National Academy of Sciences of Ukraine, Lebedev 37, Kyiv, 03143, Ukraine
| | - Kenneth Rodney
- IIC, The Iwokrama International Centre for Rain Forest Conservation and Development, 77 High Street, Georgetown, Guyana
| | - Andes H Rozak
- Cibodas Botanic Gardens - Indonesian Institute of Sciences (LIPI), Jl. Kebun Raya Cibodas, Cipanas, Cianjur, 43253, Indonesia
| | - Ademir Ruschel
- Embrapa Amazonia Oriental, Travessa Doutor Enéas Pinheiro, Belém, PA, 66095-903, Brazil
| | - Ervan Rutishauser
- Smithsonian Tropical Research Institute, Balboa, Ancon, Panama 3092, Panama
| | - Linda See
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Maria Shchepashchenko
- Russian Institute of Continuous Education in Forestry, Institutskaya 17, Pushkino, 141200, Russia
| | - Nikolay Shevchenko
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Anatoly Shvidenko
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Marcos Silveira
- Museu Universitário, Universidade Federal do Acre, BR 364, Km 04 - Distrito Industrial, Rio Branco, 69915-559, Brazil
| | - James Singh
- Guyana Forestry Commission, 1 Water Street, Kingston Georgetown, Guyana
| | - Bonaventure Sonké
- Plant Systematic and Ecology Laboratory, University of Yaoundé I, P.O. Box 047, Yaounde, Cameroon
| | - Cintia Souza
- Embrapa, Rodovia AM 10, km 29, Manaus, AM, 69010-970, Brazil
| | - Krzysztof Stereńczak
- Forest Research Institute, Department of Geomatics, Braci Leśnej 3, Sękocin Stary, Raszyn, 05-090, Poland
| | - Leonid Stonozhenko
- Russian Institute of Continuous Education in Forestry, Institutskaya 17, Pushkino, 141200, Russia
| | | | - Justyna Szatniewska
- Global Change Research Institute CAS, Bělidla 986/4a, Brno, 603 00, Czech Republic
| | - Hermann Taedoumg
- Plant Systematic and Ecology Laboratory, University of Yaoundé I, P.O. Box 047, Yaounde, Cameroon
- Bioversity international, P.O. Box 2008, Messa, Yaoundé, Cameroun
| | | | - Elena Tikhonova
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Marisol Toledo
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno Av. Irala 565 - casilla, 2489, Santa Cruz, Bolivia
| | - Olga V Trefilova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Ruben Valbuena
- School of Natural Sciences, Bangor University, Thoday Building. Deiniol Rd, Bangor, LL57 2UW, United Kingdom
| | - Luis Valenzuela Gamarra
- Jardín Botánico de Missouri; Universidad Nacional de San Antonio Abad del Cusco, Oxapampa, Peru
| | - Sergey Vasiliev
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia
| | - Estella F Vedrova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Sergey V Verhovets
- Siberian Federal University, Svobodnyy Ave, 79, Krasnoyarsk, 660041, Russia
- Reshetnev Siberian state university of science and technology, pr. Mira 82, Krasnoyarsk, 660049, Russia
| | - Edson Vidal
- Department of Forest Sciences, Luiz de Queiroz College of Agriculture, University of Sao Paolo, PO Box 9, Av. Pádua Dias, 11, Piracicaba, São Paulo, 13418-900, Brazil
| | - Nadezhda A Vladimirova
- State Nature Reserve Denezhkin Kamen, Lenina, 6, Sverdlovsk reg, Severouralsk, 624480, Russia
| | - Jason Vleminckx
- International Center for Tropical Botany, Department of Biological Sciences, Florida International University, 11200 S.W. 8th Street, Miami, 33199, FL, USA
| | | | - Foma K Vozmitel
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia
| | - Wolfgang Wanek
- Department of Microbiology and Ecosystem Science, Division of Terrestrial Ecosystem research, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria
| | - Thales A P West
- New Zealand Forest Research Institute (Scion) Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua, 3046, New Zealand
| | - Hannsjorg Woell
- Unaffiliated (retired), Sommersbergseestrasse 291, Bad Aussee, 8990, Austria
| | - John T Woods
- W.R.T College of Agriculture and Forestry, University of Liberia, Capitol Hill, Monrovia, 9020, Liberia
| | - Verginia Wortel
- Center for Agricultural research in Suriname, CELOS, 1914, Paramaribo, Suriname
| | - Toshihiro Yamada
- Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8521, Japan
| | - Zamah Shari Nur Hajar
- FRIM Forest Research Institute of Malaysia, 52109 Kepong, Selangor, Kuala Lumpur, Malaysia
| | - Irié Casimir Zo-Bi
- Department Foresterie et Environnement (DFR FOREN), Institut National Polytechnique Félix Houphouët-Boigny, INP-HB, Yamoussoukro, BP 2661, Côte d'Ivoire
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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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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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Karlsson A, Gonzalez V, Jaraj SJ, Bottai M, Sandelin K, Arver B, Eriksson S. The accuracy of incremental pre-operative breast MRI findings – Concordance with histopathology in the Swedish randomized multicenter POMB trial. Eur J Radiol 2019; 114:185-191. [DOI: 10.1016/j.ejrad.2019.03.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 02/12/2019] [Accepted: 03/11/2019] [Indexed: 11/28/2022]
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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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Wende FJ, Gohil S, Nord LI, Karlsson A, Kenne AH, Sandström C. Insights on the reactivity of chondroitin and hyaluronan toward 1,4-butanediol diglycidyl ether. Int J Biol Macromol 2019; 131:812-820. [PMID: 30880057 DOI: 10.1016/j.ijbiomac.2019.03.020] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 02/21/2019] [Accepted: 03/02/2019] [Indexed: 02/01/2023]
Abstract
Hyaluronic acid (HA) cross-linked with 1,4-butanediol diglycidyl ether (BDDE) are hydrogels with many biomedical applications. Degree of substitution, cross-linking and substitution position of the cross-linker might influence the properties of the hydrogels. We showed earlier that the most common substitution position of the cross-linker on the hyaluronan chain was the 4-hydroxyl of N-acetylglucosamine. This result has led us to investigate unsulfated chondroitin (CN) which only differ from HA in the primary structure by the configuration at C4 of the aminoglycan. In the present study, we have investigated (i) the substitution positions of the cross-linker in CN using NMR and LC-MS and compared the results to the data obtained for HA (ii) the effect of alkali on the 13C and 1H chemical shifts in CN and HA (iii) the temperature coefficients and chemical shifts of hydroxyl protons in CN and HA. In CN, the 2-hydroxyl of glucuronic acid and 6-hydroxyl of N-acetylgalactosamine were found to be the major sites of substitution by BDDE. Moreover, while chondroitinase was not able to cleave HA tetrasaccharide substituted at the 4-hydroxyl GlcNAc reducing end by BDDE, it is able to degrade CN-BDDE down to disaccharide units.
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Affiliation(s)
- Frida J Wende
- Department of Molecular Sciences, Uppsala BioCenter, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Suresh Gohil
- Department of Molecular Sciences, Uppsala BioCenter, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Lars I Nord
- Research A&C Galderma, Seminariegatan 21, SE-752 28 Uppsala, Sweden
| | - Anders Karlsson
- Research A&C Galderma, Seminariegatan 21, SE-752 28 Uppsala, Sweden
| | | | - Corine Sandström
- Department of Molecular Sciences, Uppsala BioCenter, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden.
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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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Jing J, Bankefors J, Bonneaud C, Sawen E, Gerfaud T, Westin J, El-Bazbouz G, Kandelin L, Rousseau A, Olsson J, Karlsson A, Nord L, Bouix-Peter C, Helander Kenne A, Boiteau JG, Tomas L, Hennequin L, Harris CS. Rapid and Selective Cleavage of Amide Groups at Neutral pH: Applications from Hyaluronic Acid to Small Molecules. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jing Jing
- Research Chemistry; Nestlé Skin Health; 06902 Sophia-Antipolis France
| | - Johan Bankefors
- Research Chemistry; Nestlé Skin Health; Seminariegatan 21 752 28 Uppsala Sweden
| | - Céline Bonneaud
- Research Chemistry; Nestlé Skin Health; 06902 Sophia-Antipolis France
| | - Elin Sawen
- Research Chemistry; Nestlé Skin Health; Seminariegatan 21 752 28 Uppsala Sweden
| | - Thibaud Gerfaud
- Research Chemistry; Nestlé Skin Health; 06902 Sophia-Antipolis France
| | - Jonatan Westin
- Research Chemistry; Nestlé Skin Health; Seminariegatan 21 752 28 Uppsala Sweden
| | | | - Lina Kandelin
- Research Chemistry; Nestlé Skin Health; Seminariegatan 21 752 28 Uppsala Sweden
| | - Antoine Rousseau
- Research Chemistry; Nestlé Skin Health; 06902 Sophia-Antipolis France
| | - Johan Olsson
- Research Chemistry; Nestlé Skin Health; Seminariegatan 21 752 28 Uppsala Sweden
| | - Anders Karlsson
- Research Chemistry; Nestlé Skin Health; Seminariegatan 21 752 28 Uppsala Sweden
| | - Lars Nord
- Research Chemistry; Nestlé Skin Health; Seminariegatan 21 752 28 Uppsala Sweden
| | | | - Anne Helander Kenne
- Research Chemistry; Nestlé Skin Health; Seminariegatan 21 752 28 Uppsala Sweden
| | - Jean-Guy Boiteau
- Research Chemistry; Nestlé Skin Health; 06902 Sophia-Antipolis France
| | - Loic Tomas
- Research Chemistry; Nestlé Skin Health; 06902 Sophia-Antipolis France
| | - Laurent Hennequin
- Research Chemistry; Nestlé Skin Health; 06902 Sophia-Antipolis France
| | - Craig S. Harris
- Research Chemistry; Nestlé Skin Health; 06902 Sophia-Antipolis France
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Samuelsson J, Leśko M, Enmark M, Högblom J, Karlsson A, Kaczmarski K. Optimizing Column Length and Particle Size in Preparative Batch Chromatography Using Enantiomeric Separations of Omeprazole and Etiracetam as Models: Feasibility of Taguchi Empirical Optimization. Chromatographia 2018; 81:851-860. [PMID: 29887619 PMCID: PMC5972160 DOI: 10.1007/s10337-018-3519-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 01/23/2018] [Revised: 03/26/2018] [Accepted: 04/05/2018] [Indexed: 11/24/2022]
Abstract
The overreaching purpose of this study is to evaluate new approaches for determining the optimal operational and column conditions in chromatography laboratories, i.e., how best to select a packing material of proper particle size and how to determine the proper length of the column bed after selecting particle size. As model compounds, we chose two chiral drugs for preparative separation: omeprazole and etiracetam. In each case, two maximum allowed pressure drops were assumed: 80 and 200 bar. The processes were numerically optimized (mechanistic modeling) with a general rate model using a global optimization method. The numerical predictions were experimentally verified at both analytical and pilot scales. The lower allowed pressure drop represents the use of standard equipment, while the higher allowed drop represents more modern equipment. For both compounds, maximum productivity was achieved using short columns packed with small-particle size packing materials. Increasing the allowed backpressure in the separation leads to an increased productivity and reduced solvent consumption. As advanced numerical calculations might not be available in the laboratory, we also investigated a statistically based approach, i.e., the Taguchi method (empirical modeling), for finding the optimal decision variables and compared it with advanced mechanistic modeling. The Taguchi method predicted that shorter columns packed with smaller particles would be preferred over longer columns packed with larger particles. We conclude that the simpler optimization tool, i.e., the Taguchi method, can be used to obtain "good enough" preparative separations, though for accurate processes, optimization, and to determine optimal operational conditions, classical numerical optimization is still necessary.
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Affiliation(s)
- Jörgen Samuelsson
- 1Department of Engineering and Chemical Sciences, Karlstad University, 651 88 Karlstad, Sweden
| | - Marek Leśko
- 2Department of Chemical Engineering, Rzeszow University of Technology, 35 959 Rzeszow, Poland
| | - Martin Enmark
- 1Department of Engineering and Chemical Sciences, Karlstad University, 651 88 Karlstad, Sweden
| | - Joakim Högblom
- Akzo Nobel Pulp and Performance Chemicals AB, 445 80 Bohus, Sweden
| | | | - Krzysztof Kaczmarski
- 2Department of Chemical Engineering, Rzeszow University of Technology, 35 959 Rzeszow, Poland
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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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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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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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Gonzales-Siles L, Karlsson R, Kenny D, Karlsson A, Sjöling Å. Proteomic analysis of enterotoxigenic Escherichia coli (ETEC) in neutral and alkaline conditions. BMC Microbiol 2017; 17:11. [PMID: 28061865 PMCID: PMC5219706 DOI: 10.1186/s12866-016-0914-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 07/21/2016] [Accepted: 12/13/2016] [Indexed: 12/20/2022] Open
Abstract
Background Enterotoxigenic Escherichia coli (ETEC) is a major cause of diarrhea in children and travelers to endemic areas. Secretion of the heat labile AB5 toxin (LT) is induced by alkaline conditions. In this study, we determined the surface proteome of ETEC exposed to alkaline conditions (pH 9) as compared to neutral conditions (pH 7) using a LPI Hexalane FlowCell combined with quantitative proteomics. Relative quantitation with isobaric labeling (TMT) was used to compare peptide abundance and their corresponding proteins in multiple samples at MS/MS level. For protein identification and quantification samples were analyzed using either a 1D-LCMS or a 2D-LCMS approach. Results Strong up-regulation of the ATP synthase operon encoding F1Fo ATP synthase and down-regulation of proton pumping proteins NuoF, NuoG, Ndh and WrbA were detected among proteins involved in regulating the proton and electron transport under alkaline conditions. Reduced expression of proteins involved in osmotic stress was found at alkaline conditions while the Sec-dependent transport over the inner membrane and outer membrane protein proteins such as OmpA and the β-Barrel Assembly Machinery (BAM) complex were up-regulated. Conclusions ETEC exposed to alkaline environments express a specific proteome profile characterized by up-regulation of membrane proteins and secretion of LT toxin. Alkaline microenvironments have been reported close to the intestinal epithelium and the alkaline proteome may hence represent a better view of ETEC during infection.
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Affiliation(s)
- Lucia Gonzales-Siles
- Department of Infectious Disease, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-41346, Gothenburg, Sweden.
| | | | - Diarmuid Kenny
- Proteomics Core Facility at the University of Gothenburg, SE-43050, Gothenburg, Sweden
| | | | - Åsa Sjöling
- Department of Microbiology Tumor and Cell Biology, Karolinska Institutet, Stockholm, SE-17177, Sweden
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Affiliation(s)
- Gudrun Persson
- (Mental illness, Urinary incontinence, Disorders of
the Locomotive System, Allergy and asthma and Dental health), Centre for Epidemiology,
National Board of Health and Welfare, SE-106 30 Stockholm, Sweden,
| | - Lotti Barlow
- (Tumour Diseases), Centre for Epidemiology, National
Board of Health and Welfare, SE-106 30 Stockholm, Sweden,
| | - Anders Karlsson
- (Injuries), Centre for Epidemiology, National Board
of Health and Welfare, SE-106 30 Stockholm, Sweden,
| | - Måns Rosén
- (Cardiovascular Diseases and Diabetes), Centre for Epidemiology,
National Board of Health and Welfare, SE-106 30 Stockholm, Sweden,
| | - Claes-Göran Stefansson
- (Mental illness), Social Welfare Department, National
Board of Health and Welfare, SE-106 30 Stockholm, Sweden,
| | - Töres Theorell
- (Stress-a Disease Risk), National Institute for Psychosocial
Factors and Health (IPM), Box 230, SE-171 77 Stockholm, Sweden,
| | - Peet Tüll
- (Infectious diseases), Infectious diseases prevention,
Supervision Department, National Board of Health and Welfare, SE-106 30 Stockholm,
Sweden,
| | - Anders Åberg
- (Injuries), Centre for Epidemiology, National Board
of Health and Welfare, SE-106 30 Stockholm, Sweden
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Karlsson R, Thorell K, Hosseini S, Kenny D, Sihlbom C, Sjöling Å, Karlsson A, Nookaew I. Comparative Analysis of Two Helicobacter pylori Strains using Genomics and Mass Spectrometry-Based Proteomics. Front Microbiol 2016; 7:1757. [PMID: 27891114 PMCID: PMC5104757 DOI: 10.3389/fmicb.2016.01757] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 08/05/2016] [Accepted: 10/19/2016] [Indexed: 12/20/2022] Open
Abstract
Helicobacter pylori, a gastroenteric pathogen believed to have co-evolved with humans over 100,000 years, shows significant genetic variability. This motivates the study of different H. pylori strains and the diseases they cause in order to identify determinants for disease evolution. In this study, we used proteomics tools to compare two H. pylori strains. Nic25_A was isolated in Nicaragua from a patient with intestinal metaplasia, and P12 was isolated in Europe from a patient with duodenal ulcers. Differences in the abundance of surface proteins between the two strains were determined with two mass spectrometry-based methods, label-free quantification (MaxQuant) or the use of tandem mass tags (TMT). Each approach used a lipid-based protein immobilization (LPITM) technique to enrich peptides of surface proteins. Using the MaxQuant software, we found 52 proteins that differed significantly in abundance between the two strains (up- or downregulated by a factor of 1.5); with TMT, we found 18 proteins that differed in abundance between the strains. Strain P12 had a higher abundance of proteins encoded by the cag pathogenicity island, while levels of the acid response regulator ArsR and its regulatory targets (KatA, AmiE, and proteins involved in urease production) were higher in strain Nic25_A. Our results show that differences in protein abundance between H. pylori strains can be detected with proteomic approaches; this could have important implications for the study of disease progression.
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Affiliation(s)
- Roger Karlsson
- Nanoxis Consulting ABGothenburg, Sweden; Department of Infectious Diseases, Sahlgrenska Academy, University of GothenburgGothenburg, Sweden
| | - Kaisa Thorell
- Department of Microbiology and Immunology, University of GothenburgGothenburg, Sweden; Department of Biology and Biological Engineering, Chalmers University of TechnologyGothenburg, Sweden
| | - Shaghayegh Hosseini
- Department of Biology and Biological Engineering, Chalmers University of Technology Gothenburg, Sweden
| | - Diarmuid Kenny
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden
| | - Åsa Sjöling
- Department of Microbiology and Immunology, University of Gothenburg Gothenburg, Sweden
| | | | - Intawat Nookaew
- Department of Biology and Biological Engineering, Chalmers University of TechnologyGothenburg, Sweden; Department of Biomedical Informatics, College of Medicine, University of Arkansas for Medical Sciences, Little RockAR, USA
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Ludvigsson JW, Karlsson A, Kjellberg V. Core-shell column Tanaka characterization and additional tests using active pharmaceutical ingredients. J Sep Sci 2016; 39:4520-4532. [DOI: 10.1002/jssc.201600769] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/27/2016] [Accepted: 09/29/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Jufang Wu Ludvigsson
- Pharmaceutical Technology and Development; AstraZeneca R&D Gothenburg; Mölndal Sweden
| | - Anders Karlsson
- Pharmaceutical Technology and Development; AstraZeneca R&D Gothenburg; Mölndal Sweden
| | - Viktor Kjellberg
- Pharmaceutical Technology and Development; AstraZeneca R&D Gothenburg; Mölndal Sweden
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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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Gustafsson M, Gustafsson L, Alloysius D, Falck J, Yap S, Karlsson A, Ilstedt U. Tree traits and canopy closure data from an experiment with 34 planted species native to Sabah, Borneo. Data Brief 2016; 6:466-70. [PMID: 26900591 PMCID: PMC4716456 DOI: 10.1016/j.dib.2015.12.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 11/20/2015] [Revised: 12/18/2015] [Accepted: 12/23/2015] [Indexed: 11/08/2022] Open
Abstract
The data presented in this paper is supporting the research article “Life history traits predict the response to increased light among 33 tropical rainforest tree species” [3]. We show basic growth and survival data collected over the 6 years duration of the experiment, as well as data from traits inventories covering 12 tree traits collected prior to and after a canopy reduction treatment in 2013. Further, we also include canopy closure and forest light environment data from measurements with hemispherical photographs before and after the treatment.
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Affiliation(s)
- Malin Gustafsson
- Swedish University of Agricultural Sciences, Department of Forest Ecology and Management, 901 83 Umeå, Sweden
| | - Lena Gustafsson
- Swedish University of Agricultural Sciences, Faculty of Natural Resources, Department of Ecology, 750 07 Uppsala, Sweden
| | - David Alloysius
- Conservation & Environmental Management Division, Yayasan Sabah Group, P.O. Box 11623, 88817 Kota Kinabalu, Sabah, Malaysia
| | - Jan Falck
- Swedish University of Agricultural Sciences, Department of Forest Ecology and Management, 901 83 Umeå, Sweden
| | - Sauwai Yap
- Conservation & Environmental Management Division, Yayasan Sabah Group, P.O. Box 11623, 88817 Kota Kinabalu, Sabah, Malaysia
| | - Anders Karlsson
- Swedish University of Agricultural Sciences, Department of Forest Ecology and Management, 901 83 Umeå, Sweden
| | - Ulrik Ilstedt
- Swedish University of Agricultural Sciences, Department of Forest Ecology and Management, 901 83 Umeå, Sweden
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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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Wende FJ, Gohil S, Mojarradi H, Gerfaud T, Nord LI, Karlsson A, Boiteau JG, Kenne AH, Sandström C. Determination of substitution positions in hyaluronic acid hydrogels using NMR and MS based methods. Carbohydr Polym 2016; 136:1348-57. [DOI: 10.1016/j.carbpol.2015.09.112] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Revised: 09/25/2015] [Accepted: 09/30/2015] [Indexed: 11/30/2022]
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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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