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Olsson M, Bala SV, Hagell P. Evaluating person-centered care in neurological outpatient care: a mixed-methods content validity study. BMC Nurs 2024; 23:198. [PMID: 38523274 PMCID: PMC10962160 DOI: 10.1186/s12912-024-01837-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 03/03/2024] [Indexed: 03/26/2024] Open
Abstract
BACKGROUND Person-centered care (PCC) is gaining increased attention. PCC concerns the whole person behind the disease and can improve care for people with long-term conditions such as multiple sclerosis (MS) and Parkinson's disease (PD). However, there is a lack of tools to assess PCC from the patients' perspective, particularly in outpatient care. The Person-Centered Care instrument for outpatient care (PCCoc) is an instrument under development with the intention to fill this gap. The aim of this study was to test the user-friendliness and content validity of the PCCoc as experienced by persons with MS and PD in neurological outpatient care. METHODS Twenty persons with MS or PD completed the 35-item PCCoc followed by an interview regarding the instrument's intelligibility and ease of use to assess its user-friendliness. Participants then rated the relevance of each item. These ratings were used to calculate the content validity index (CVI) for individual items (I-CVI) and for the overall scale (S-CVI). RESULTS It took a median of 5 min for participants to complete the PCCoc. Instrument instructions were found clear, items easy to understand, and response categories distinct. No important missing areas were reported. I-CVI values ranged between 0.75 and 1, and S-CVI was 0.96. CONCLUSIONS We found support for the user-friendliness and content validity of the PCCoc among persons with MS and PD, suggesting that the PCCoc can be useful for evaluating and developing PCC in neurological outpatient care. Further testing in broader contexts, including psychometric testing, is warranted to establish its usefulness.
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Affiliation(s)
- Mia Olsson
- Department of Medicine, Helsingborg Central Hospital, Helsingborg, Sweden
| | - Sidona-Valentina Bala
- Department of Medicine, Helsingborg Central Hospital, Helsingborg, Sweden
- Department of Health Sciences, Faculty of Medicine, Lund University, Lund, Sweden
| | - Peter Hagell
- The PRO-CARE Group, Faculty of Health Sciences, Kristianstad University, Kristianstad, SE-291 88, Sweden.
- Restorative Parkinson Unit, Division of Neurology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden.
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2
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Qu H, Sundberg E, Aulin C, Neog M, Palmblad K, Horne AC, Granath F, Ek A, Melén E, Olsson M, Harris HE. Immunoprofiling of active and inactive systemic juvenile idiopathic arthritis reveals distinct biomarkers: a single-center study. Pediatr Rheumatol Online J 2021; 19:173. [PMID: 34963488 PMCID: PMC8713412 DOI: 10.1186/s12969-021-00660-9] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 12/15/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND This study aimed to perform an immunoprofiling of systemic juvenile idiopathic arthritis (sJIA) in order to define biomarkers of clinical use as well as reveal new immune mechanisms. METHODS Immunoprofiling of plasma samples from a clinically well-described cohort consisting of 21 sJIA patients as well as 60 age and sex matched healthy controls, was performed by a highly sensitive proteomic immunoassay. Based on the biomarkers being significantly up- or down-regulated in cross-sectional and paired analysis, related canonical pathways and cellular functions were explored by Ingenuity Pathway Analysis (IPA). RESULTS The well-studied sJIA biomarkers, IL6, IL18 and S100A12, were confirmed to be increased during active sJIA as compared to healthy controls. IL18 was the only factor found to be increased during inactive sJIA as compared to healthy controls. Novel factors, including CASP8, CCL23, CD6, CXCL1, CXCL11, CXCL5, EIF4EBP1, KITLG, MMP1, OSM, SIRT2, SULT1A1 and TNFSF11, were found to be differentially expressed in active and/or inactive sJIA and healthy controls. No significant pathway activation could be predicted based on the limited factor input to the IPA. High Mobility Group Box 1 (HMGB1), a damage associated molecular pattern being involved in a series of inflammatory diseases, was determined to be higher in active sJIA than inactive sJIA. CONCLUSIONS We could identify a novel set of biomarkers distinguishing active sJIA from inactive sJIA or healthy controls. Our findings enable a better understanding of the immune mechanisms active in sJIA and aid the development of future diagnostic and therapeutic strategies.
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Affiliation(s)
- Heshuang Qu
- grid.4714.60000 0004 1937 0626Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden ,grid.24381.3c0000 0000 9241 5705Division of Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Erik Sundberg
- grid.24381.3c0000 0000 9241 5705Unit of Pediatric Rheumatology, Karolinska University Hospital, Stockholm, Sweden ,grid.4714.60000 0004 1937 0626Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
| | - Cecilia Aulin
- grid.4714.60000 0004 1937 0626Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden ,grid.24381.3c0000 0000 9241 5705Division of Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Manoj Neog
- grid.4714.60000 0004 1937 0626Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden ,grid.24381.3c0000 0000 9241 5705Division of Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Karin Palmblad
- grid.24381.3c0000 0000 9241 5705Unit of Pediatric Rheumatology, Karolinska University Hospital, Stockholm, Sweden ,grid.4714.60000 0004 1937 0626Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
| | - Anna Carin Horne
- grid.24381.3c0000 0000 9241 5705Unit of Pediatric Rheumatology, Karolinska University Hospital, Stockholm, Sweden ,grid.4714.60000 0004 1937 0626Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
| | - Fredrik Granath
- grid.4714.60000 0004 1937 0626Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Alexandra Ek
- Center for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Erik Melén
- grid.416452.0Sachs Children’s Hospital, Stockholm, Sweden ,Department of Clinical Sciences and Education, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden
| | - Mia Olsson
- grid.4714.60000 0004 1937 0626Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden ,grid.24381.3c0000 0000 9241 5705Division of Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Helena Erlandsson Harris
- Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden. .,Division of Rheumatology, Karolinska University Hospital, Stockholm, Sweden.
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3
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Fitzpatrick LJ, Olsson M, Pauliny A, While GM, Wapstra E. Individual telomere dynamics and their links to life history in a viviparous lizard. Proc Biol Sci 2021; 288:20210271. [PMID: 34034513 DOI: 10.1098/rspb.2021.0271] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Emerging patterns suggest telomere dynamics and life history are fundamentally linked in endotherms through life-history traits that mediate the processes underlying telomere attrition. Unlike endotherms, ectotherms maintain the ability to lengthen somatic telomeres throughout life and the link between life-history strategies and ectotherm telomere dynamics is unknown. In a well-characterized model system (Niveoscincus ocellatus), we used long-term longitudinal data to study telomere dynamics across climatically divergent populations. We found longer telomeres in individuals from the cool highlands than those from the warm lowlands at birth and as adults. The key determinant of adult telomere length across populations was telomere length at birth, with population-specific effects of age and growth on adult telomere length. The reproductive effort had no proximate effect on telomere length in either population. Maternal factors influenced telomere length at birth in the warm lowlands but not the cool highlands. Our results demonstrate that life-history traits can have pervasive and context-dependent effects on telomere dynamics in ectotherms both within and between populations. We argue that these telomere dynamics may reflect the populations' different life histories, with the slow-growing cool highland population investing more into telomere lengthening compared to the earlier-maturing warm lowland population.
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Affiliation(s)
- L J Fitzpatrick
- School of Natural Sciences, University of Tasmania, Hobart, Australia
| | - M Olsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - A Pauliny
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - G M While
- School of Natural Sciences, University of Tasmania, Hobart, Australia
| | - E Wapstra
- School of Natural Sciences, University of Tasmania, Hobart, Australia
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4
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Olsson A, Olsson M, Fedorowski A, Hagell P, Wictorin K. The Orthostatic Hypotension Questionnaire in Swedish tested in patients with parkinsonism. Brain Behav 2020; 10:e01746. [PMID: 32633094 PMCID: PMC7507031 DOI: 10.1002/brb3.1746] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 05/29/2020] [Accepted: 06/06/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Orthostatic hypotension (OH) is common among older people and in particular in conditions like Parkinson's disease (PD). The OH Questionnaire (OHQ) has been proposed as a useful patient-reported assessment tool consisting of the OH Symptom Assessment (OHSA), OH Daily Activity Scale (OHDAS), and a composite score. AIMS OF THE STUDY To translate the OHQ into Swedish and assess its psychometric properties. METHODS Following forward-backward translation, the Swedish OHQ was field-tested (n = 6) for relevance, comprehensibility, and respondent burden. It was then tested regarding scaling assumptions, targeting, reliability, and construct validity in persons with PD (n = 27) and multiple system atrophy (n = 2). RESULTS The Swedish OHQ was considered relevant and easy to use, with a mean completion time of 5.3 min. Scaling assumptions were acceptable for OHSA and OHDAS (corrected item-total correlations, .30-.67) but not for the total score (.12-.69). Floor/ceiling effects were ≤3.4% and reliability was >.64. Construct validity was supported by expected correlations with the SCOPA-AUT, RAND-36, and blood pressure measurements. CONCLUSIONS The Swedish OHQ was well received, and psychometric results suggest that the OHQ (particularly the OHDAS) is a useful tool for OH assessment in parkinsonian disorders. Further testing in larger samples is needed.
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Affiliation(s)
- Andreas Olsson
- Division of Clinical Sciences Helsingborg, Department of Clinical Sciences Lund, Faculty of Medicine, Lund University, Lund, Sweden
| | - Mia Olsson
- Division of Clinical Sciences Helsingborg, Department of Clinical Sciences Lund, Faculty of Medicine, Lund University, Lund, Sweden
| | - Artur Fedorowski
- Departments of Cardiology and Clinical Sciences, Faculty of Medicine, Lund University, Malmö, Sweden
| | - Peter Hagell
- The PRO-CARE Group, Faculty of Health Sciences, Kristianstad University, Kristianstad, Sweden
| | - Klas Wictorin
- Division of Clinical Sciences Helsingborg, Department of Clinical Sciences Lund, Faculty of Medicine, Lund University, Lund, Sweden
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5
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Tengvall K, Bergvall K, Olsson M, Ardesjö-Lundgren B, Farias FHG, Kierczak M, Hedhammar Å, Lindblad-Toh K, Andersson G. Transcriptomes from German shepherd dogs reveal differences in immune activity between atopic dermatitis affected and control skin. Immunogenetics 2020; 72:315-323. [PMID: 32556497 PMCID: PMC7320941 DOI: 10.1007/s00251-020-01169-3] [Citation(s) in RCA: 2] [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: 03/12/2020] [Accepted: 05/28/2020] [Indexed: 11/30/2022]
Abstract
Canine atopic dermatitis (CAD) is an inflammatory and pruritic allergic skin disease with both genetic and environmental risk factors described. We performed mRNA sequencing of non-lesional axillary skin biopsies from nine German shepherd dogs. Obtained RNA sequences were mapped to the dog genome (CanFam3.1) and a high-quality skin transcriptome was generated with 23,510 expressed gene transcripts. Differentially expressed genes (DEGs) were defined by comparing three controls to five treated CAD cases. Using a leave-one-out analysis, we identified seven DEGs: five known to encode proteins with functions related to an activated immune system (CD209, CLEC4G, LOC102156842 (lipopolysaccharide-binding protein-like), LOC480601 (regakine-1-like), LOC479668 (haptoglobin-like)), one (OBP) encoding an odorant-binding protein potentially connected to rhinitis, and the last (LOC607095) encoding a novel long non-coding RNA. Furthermore, high mRNA expression of inflammatory genes was found in axillary skin from an untreated mild CAD case compared with healthy skin. In conclusion, we define genes with different expression patterns in CAD case skin helping us understand post-treatment atopic skin. Further studies in larger sample sets are warranted to confirm and to transfer these results into clinical practice.
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Affiliation(s)
- K Tengvall
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.
| | - K Bergvall
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - M Olsson
- Division of Rheumatology, Department Medicine, Center for Molecular Medicine, Karolinska Institutet, Solna, Sweden
| | - B Ardesjö-Lundgren
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.,Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - F H G Farias
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - M Kierczak
- Department of Cell and Molecular Biology, Infrastructure Sweden, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Å Hedhammar
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - K Lindblad-Toh
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.,Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - G Andersson
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
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6
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Rollings N, Waye HL, Krohmer RW, Uhrig EJ, Mason RT, Olsson M, Whittington CM, Friesen CR. Sperm telomere length correlates with blood telomeres and body size in red‐sided garter snakes,
Thamnophis sirtalis parietalis. J Zool (1987) 2020. [DOI: 10.1111/jzo.12789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- N. Rollings
- School of Life and Environmental Sciences University of Sydney Sydney NSW Australia
| | - H. L. Waye
- Division of Science and Mathematics University of Minnesota Morris Morris MN USA
| | - R. W Krohmer
- Department of Biological Sciences Saint Xavier University Chicago IL USA
| | - E. J. Uhrig
- Department of Integrative Biology Oregon State University Corvallis OR USA
| | - R. T. Mason
- Department of Integrative Biology Oregon State University Corvallis OR USA
| | - M. Olsson
- Department of Biological & Environmental Sciences University of Gothenburg Gothenburg Sweden
- School of Earth, Atmospheric and Life Sciences University of Wollongong Wollongong NSW Australia
| | - C. M. Whittington
- School of Life and Environmental Sciences University of Sydney Sydney NSW Australia
| | - C. R. Friesen
- School of Earth, Atmospheric and Life Sciences University of Wollongong Wollongong NSW Australia
- Illawarra Health and Medical Research Institute (IHMRI)University of Wollongong Wollongong NSW Australia
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7
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Olsson M, Bajpai R, Wee L, Yew Y, Koh M, Thng S, Car J, Järbrink K. 儿童湿疹相关的成本. Br J Dermatol 2020. [DOI: 10.1111/bjd.19004] [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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8
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9
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Struglics A, Saleh R, Sundberg E, Olsson M, Erlandsson Harris H, Aulin C. Juvenile idiopathic arthritis patients have a distinct cartilage and bone biomarker profile that differs from healthy and knee-injured children. Clin Exp Rheumatol 2020. [DOI: 10.55563/clinexprheumatol/ck090i] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- André Struglics
- Lund University, Faculty of Medicine, Department of Clinical Sciences Lund, Orthopaedics, Lund, Sweden
| | - Raya Saleh
- Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institutet, and Division of Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Erik Sundberg
- Department of Women’s and Children’s Health, Karolinska Institutet and Unit of Paediatric Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Mia Olsson
- Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institutet, and Division of Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Helena Erlandsson Harris
- Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institutet, and Division of Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Cecilia Aulin
- Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institutet, and Division of Rheumatology, Karolinska University Hospital, Stockholm, Sweden.
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10
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Olsson M, Bajpai R, Wee L, Yew Y, Koh M, Thng S, Car J, Järbrink K. The cost of childhood atopic dermatitis in a multi‐ethnic Asian population: a cost‐of‐illness study. Br J Dermatol 2019; 182:1245-1252. [DOI: 10.1111/bjd.18442] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/12/2019] [Indexed: 11/27/2022]
Affiliation(s)
- M. Olsson
- Centre for Population Health Sciences (CePHaS) Lee Kong Chian School of Medicine Nanyang Technological University Clinical Sciences Building, 11 Mandalay Road Singapore 308232 Singapore
- Queensland University of Technology Kelvin Grove Queensland Australia
| | - R. Bajpai
- Centre for Population Health Sciences (CePHaS) Lee Kong Chian School of Medicine Nanyang Technological University Clinical Sciences Building, 11 Mandalay Road Singapore 308232 Singapore
- Research Institute for Primary Care and Health Sciences Keele University Staffordshire ST55BG U.K
| | - L.W.Y. Wee
- Dermatology Service KK Women's and Children's Hospital Singapore
| | - Y.W. Yew
- National Skin Centre 1 Mandalay Road Singapore 308205
| | - M.J.A. Koh
- Dermatology Service KK Women's and Children's Hospital Singapore
| | - S. Thng
- National Skin Centre 1 Mandalay Road Singapore 308205
- Skin Research Institute of Singapore Singapore
| | - J. Car
- Centre for Population Health Sciences (CePHaS) Lee Kong Chian School of Medicine Nanyang Technological University Clinical Sciences Building, 11 Mandalay Road Singapore 308232 Singapore
- Global eHealth Unit Department of Primary Care and Public Health School of Public Health Imperial College London 3rd floor Reynolds Building, St Dunstan's Road London W6 8RP U.K
| | - K. Järbrink
- Centre for Population Health Sciences (CePHaS) Lee Kong Chian School of Medicine Nanyang Technological University Clinical Sciences Building, 11 Mandalay Road Singapore 308232 Singapore
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11
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Fitzpatrick LJ, Olsson M, Parsley LM, Pauliny A, Pinfold TL, Pirtle T, While GM, Wapstra E. Temperature and telomeres: thermal treatment influences telomere dynamics through a complex interplay of cellular processes in a cold-climate skink. Oecologia 2019; 191:767-776. [PMID: 31620874 DOI: 10.1007/s00442-019-04530-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 11/29/2018] [Accepted: 10/04/2019] [Indexed: 12/29/2022]
Abstract
Telomere dynamics vary fundamentally between endothermic populations and species as a result of differences in life history, yet we know little about these patterns in ectotherms. In ectotherms, the relationships between climate, metabolism and life history suggest that telomere attrition should be higher at relatively high environmental temperatures compared to relatively low environmental temperatures, but these effects may vary between populations due to local adaptation. To address this hypothesis, we sampled reactive oxygen species (ROS) and telomere length of lizards from warm lowland and cool highland populations of a climatically widespread lizard species that we exposed to hot or cold basking treatments. The hot treatment increased relative telomere length compared to the cold treatment independent of climatic origin or ROS levels. Lizards from the cool highland region had lower ROS levels than those from the warm lowland region. Within the highland lizards, ROS increased more in the cold basking treatment than the hot basking treatment. These results are in the opposite direction to those predicted, suggesting that the relationships between temperature, metabolism, ROS and telomere dynamics are not straightforward. Future work incorporating detailed understanding of the thermal reaction norms of these and other linked traits is needed to fully understand these processes.
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Affiliation(s)
- L J Fitzpatrick
- School of Natural Sciences, University of Tasmania, Hobart, Australia.
| | - M Olsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - L M Parsley
- School of Natural Sciences, University of Tasmania, Hobart, Australia.,School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - A Pauliny
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - T L Pinfold
- School of Medicine, University of Tasmania, Hobart, Australia
| | - T Pirtle
- School of Natural Sciences, University of Tasmania, Hobart, Australia
| | - G M While
- School of Natural Sciences, University of Tasmania, Hobart, Australia
| | - E Wapstra
- School of Natural Sciences, University of Tasmania, Hobart, Australia
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12
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Fitzpatrick LJ, Olsson M, Parsley LM, Pauliny A, While GM, Wapstra E. Tail loss and telomeres: consequences of large-scale tissue regeneration in a terrestrial ectotherm. Biol Lett 2019; 15:20190151. [PMID: 31288685 DOI: 10.1098/rsbl.2019.0151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 12/22/2022] Open
Abstract
Large-scale tissue regeneration has potential consequences for telomere length through increases in cell division and changes in metabolism which increase the potential for oxidative stress damage to telomeres. The effects of regeneration on telomere dynamics have been studied in fish and marine invertebrates, but the literature is scarce for terrestrial species. We experimentally induced tail autotomy in a lizard ( Niveoscincus ocellatus) and assessed relative telomere length (RTL) in blood samples before and after partial tail regeneration while concurrently measuring reactive oxygen species (ROS) levels. The change in ROS levels was a significant explanatory variable for the change in RTL over the 60-day experiment. At the average value of ROS change, the mean RTL increased significantly in the control group (intact tails), but there was no such evidence in the regenerating group. By contrast, ROS levels decreased significantly in the regenerating group, but there was no such evidence in the control group. Combined, these results suggest that tail regeneration following autotomy involves a response to oxidative stress and this potentially comes at a cost to telomere repair. This change in telomere maintenance demonstrates a potential long-term cost of tail regeneration beyond the regrowth of tissue itself.
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Affiliation(s)
- L J Fitzpatrick
- 1 School of Natural Sciences, University of Tasmania , Hobart , Australia
| | - M Olsson
- 2 Department of Biological and Environmental Sciences, University of Gothenburg , Gothenburg , Sweden
| | - L M Parsley
- 1 School of Natural Sciences, University of Tasmania , Hobart , Australia.,3 School of Biological Sciences, University of Canterbury , Christchurch , New Zealand
| | - A Pauliny
- 2 Department of Biological and Environmental Sciences, University of Gothenburg , Gothenburg , Sweden
| | - G M While
- 1 School of Natural Sciences, University of Tasmania , Hobart , Australia
| | - E Wapstra
- 1 School of Natural Sciences, University of Tasmania , Hobart , Australia
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13
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Olsson M, Stanne TM, Pedersen A, Lorentzen E, Kara E, MartinezâPalacian A, RÃnnow Sand NP, Jacobsen AF, Sandset PM, Sidelmann JJ, EngstrÃm G, Melander O, Kanse SM, Jern C. Genome-wide analysis of genetic determinants of circulating factor VII-activating protease (FSAP) activity. J Thromb Haemost 2018; 16:2024-2034. [PMID: 30070759 PMCID: PMC6485504 DOI: 10.1111/jth.14258] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 02/08/2018] [Indexed: 01/17/2023]
Abstract
Essentials Knowledge of genetic regulators of plasma factor VII activating protease (FSAP) levels is limited. We performed a genome-wide analysis of variants influencing FSAP activity in Scandinavian cohorts. We replicated an association for Marburg-1 and identified an association for a HABP2 stop variant. We identified a novel locus near ADCY2 as a potential additional regulator of FSAP activity. SUMMARY Background Factor VII-activating protease (FSAP) has roles in both coagulation and fibrinolysis. Recent data indicate its involvement in several other processes, such as vascular remodeling and inflammation. Plasma FSAP activity is highly variable among healthy individuals and, apart from the low-frequency missense variant Marburg-I (rs7080536) in the FSAP-encoding gene HABP2, determinants of this variation are unclear. Objectives To identify novel genetic variants within and outside of the HABP2 locus that influence circulating FSAP activity. Patients/Methods We performed an exploratory genome-wide association study (GWAS) on plasma FSAP activity amongst 3230 Swedish subjects. Directly genotyped rare variants were also analyzed with gene-based tests. Using GWAS, we confirmed the strong association between the Marburg-I variant and FSAP activity. HABP2 was also significant in the gene-based analysis, and remained significant after exclusion of Marburg-I carriers. This was attributable to a rare HABP2 stop variant (rs41292628). Carriers of this stop variant showed a similar reduction in FSAP activity as Marburg-I carriers, and this finding was replicated. A secondary genome-wide significant locus was identified at a 5p15 locus (rs35510613), and this finding requires future replication. This common variant is located upstream of ADCY2, which encodes a protein catalyzing the formation of cAMP. Results and Conclusions This study verified the Marburg-I variant to be a strong regulator of FSAP activity, and identified an HABP2 stop variant with a similar impact on FSAP activity. A novel locus near ADCY2 was identified as a potential additional regulator of FSAP activity.
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Affiliation(s)
- M. Olsson
- Department of Pathology and GeneticsInstitute of BiomedicineThe Sahlgrenska Academy at University of GothenburgGothenburgSweden
| | - T. M. Stanne
- Department of Pathology and GeneticsInstitute of BiomedicineThe Sahlgrenska Academy at University of GothenburgGothenburgSweden
| | - A. Pedersen
- Department of Pathology and GeneticsInstitute of BiomedicineThe Sahlgrenska Academy at University of GothenburgGothenburgSweden
| | - E. Lorentzen
- Bioinformatics Core FacilityUniversity of GothenburgGothenburgSweden
| | - E. Kara
- Institute of Basic Medical SciencesFaculty of MedicineUniversity of OsloOsloNorway
| | - A. MartinezâPalacian
- Institute of Basic Medical SciencesFaculty of MedicineUniversity of OsloOsloNorway
| | - N. P. RÃnnow Sand
- Department of CardiologyHospital of South West DenmarkEsbjerg and Department of Regional Health ResearchFaculty of Health ScienceUniversity of Southern DenmarkEsbjergDenmark
| | - A. F. Jacobsen
- Department of ObstetricsOslo University Hospital and University of OsloOsloNorway
| | - P. M. Sandset
- Department of HematologyOslo University Hospital and University of OsloOsloNorway
| | - J. J. Sidelmann
- Unit for Thrombosis ResearchDepartment of Regional Health ResearchFaculty of Health ScienceUniversity of Southern DenmarkEsbjergDenmark
| | - G. EngstrÃm
- Department of Clinical Sciences, MalmÃLund UniversityLundSweden
| | - O. Melander
- Department of Clinical Sciences, MalmÃLund UniversityLundSweden
| | - S. M. Kanse
- Institute of Basic Medical SciencesFaculty of MedicineUniversity of OsloOsloNorway
| | - C. Jern
- Department of Pathology and GeneticsInstitute of BiomedicineThe Sahlgrenska Academy at University of GothenburgGothenburgSweden
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14
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Abstract
BACKGROUND/AIM Treatment of latently infected individuals at increased risk of reactivation is a cornerstone in tuberculosis control. Although asylum seekers without residence permit in Sweden are offered screening for both active tuberculosis and latent tuberculosis infection (LTBI), treatment for LTBI is often not initiated due to anticipated low rates of treatment completion. We aimed to compare completion rates for LTBI treatment between asylum seekers and other patients, and between asylum seekers with and without residence permit. METHODS Data were collected retrospectively from tuberculosis clinic registers and medical records. For comparison of treatment completion rates, relative risks (RR) and confidence intervals (CI) were calculated. Predictors of completion were assessed by logistic regression multivariate analysis. RESULTS Treatment completion was achieved in 506/606 subjects (83%). RR of non-completion for asylum seekers (n = 297) compared to other subjects (n = 309) was 1.13 (95% CI: 0.79-1.61; p = .51), and 0.91 (95% CI: 0.53-1.56; p = .72) for asylum seekers without residence permit (n = 217) compared to asylum seekers with residence permit (n = 80). Completion rates increased from 53% in 2008 to 92% in 2015-2016. The following factors were associated with completion: scheduled interpreter-assisted appointments throughout the course of therapy, shorter treatment duration (6 vs. 9 months), and being treated in connection with immunosuppressive therapy. CONCLUSION Treatment completion rates were similar between asylum seekers and other subjects, supporting initiation of latent tuberculosis treatment in immigrants with recent arrival to low-endemic countries.
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Affiliation(s)
- O Olsson
- a Department of Translational Medicine, Clinical Infection Medicine , Lund University , Sweden
| | - N Winqvist
- a Department of Translational Medicine, Clinical Infection Medicine , Lund University , Sweden.,b Skane Regional Office for Infectious Disease Control , Malmö , Sweden
| | - M Olsson
- c Department of Infectious Diseases , Skane University Hospital , Malmö , Sweden
| | - P Olsson
- c Department of Infectious Diseases , Skane University Hospital , Malmö , Sweden
| | - P Björkman
- a Department of Translational Medicine, Clinical Infection Medicine , Lund University , Sweden
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15
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Olsson M, Bremer L, Aulin C, Harris HE. Fragmented hyaluronan has no alarmin function assessed in arthritis synovial fibroblast and chondrocyte cultures. Innate Immun 2018; 24:131-141. [PMID: 29495940 PMCID: PMC6830895 DOI: 10.1177/1753425918759590] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 12/22/2017] [Revised: 01/12/2018] [Accepted: 01/19/2018] [Indexed: 12/11/2022] Open
Abstract
Hyaluronan (HA) is a large polymer and an important component of the extracellular matrix. During homeostasis, high molecular mass HA is the predominant form, but upon inflammation, degradation products of HA accumulate. These HA fragments (HA-fs) have been reported to possess pro-inflammatory activities and thus act as alarmins, notifying immune cells of danger via TLR4 and CD44. HA is found in large quantities in synovial joint fluid. In order to reveal a potential role of HA-fs in arthritis pathogenesis, the in vitro effects of HA of various molecular masses (from 1680 kDa to oligosaccharide HA) on synovial fibroblasts and chondrocytes from rheumatoid arthritis patients, and on peripheral blood mononuclear cells from healthy donors, were investigated. TLR4 and CD44 surface expression was confirmed by immunocytochemistry, and cell activation was determined based on cytokine and chemokine production. While the cell types investigated expressed TLR4 and CD44, no increased release of IL-1ß, IL-6, IL-8, IL-10, IL-12 or TNF-α was detected after HA stimulation. Similarly, HA did not enhance activation after priming cells with low doses of LPS or by forming complexes with LPS. Hence, this study does not support the common view of HA-fs being pro-inflammatory mediators and it is not likely that HA-fs generated during arthritis contribute to disease pathogenesis.
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Affiliation(s)
- Mia Olsson
- Department of Medicine, Karolinska Institutet,
Sweden
| | - Lisa Bremer
- Department of Medicine, Karolinska Institutet,
Sweden
| | - Cecilia Aulin
- Department of Medicine, Karolinska Institutet,
Sweden
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16
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Shine R, Wapstra E, Olsson M. Seasonal shifts along the oviparity–viviparity continuum in a cold‐climate lizard population. J Evol Biol 2017; 31:4-13. [DOI: 10.1111/jeb.13202] [Citation(s) in RCA: 10] [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: 09/06/2017] [Accepted: 10/22/2017] [Indexed: 11/29/2022]
Affiliation(s)
- R. Shine
- School of Life and Environmental Sciences University of Sydney Sydney NSW Australia
| | - E. Wapstra
- School of Biological Sciences University of Tasmania Hobart Tasmania Australia
| | - M. Olsson
- Department of Biological and Environmental Sciences University of Gothenburg Gothenburg Sweden
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17
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Rydberg A, Ygge J, Olsson M. Ocular Motor Function in Children with Spastic Hemiplegia Evaluated by the Ocular Motor Score. Strabismus 2017; 25:156-159. [PMID: 28771056 DOI: 10.1080/09273972.2017.1350727] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
PURPOSE To assess the ocular motor functions in children with spastic hemiplegia by using the Ocular Motor Score (OMS). MATERIAL This study included 34 children, median age 11 years. The children were divided into 3 groups according to the underlying brain lesion; group 1 malformations, group 2 white matter damage of immaturity (WMDI), and group 3 cortical/subcortical lesions. METHODS The OMS protocol consists of 15 different subtests evaluating ocular motor functions. The OMS is divided into 2 parts, a static and a dynamic. The results from each subtest are scored 0, 0.3, 0.5, or 1, according to the level of disturbance, where 0 corresponds to normal function and 1 represents the maximum disability in the certain subtest. A total OMS (tOMS) between 0 and 15 can be obtained. RESULTS The median tOMS in the whole spastic hemiplegia group was 2.5 (range 1.3-5.8). The highest median tOMS 5.2 was seen in group 1, in the children with malformations. Strabismus was found in 45% (15/34) of the children, with an equal percentage in all 3 groups. CONCLUSIONS The children with spastic hemiplegia had a median tOMS of 2.7 and the highest median tOMS was seen in children with malformations. The OMS protocol is easy to use clinically and gives a quick overview of the patient´s ocular motor functions.
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Affiliation(s)
- A Rydberg
- a Department of Clinical Neuroscience , Karolinska Institutet , Stockholm , Sweden.,c Astrid Lindgren Children's Hospital , Stockholm , Sweden
| | - J Ygge
- a Department of Clinical Neuroscience , Karolinska Institutet , Stockholm , Sweden.,b St. Erik Eye Hospital , Stockholm , Sweden
| | - M Olsson
- a Department of Clinical Neuroscience , Karolinska Institutet , Stockholm , Sweden.,b St. Erik Eye Hospital , Stockholm , Sweden
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18
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Forsberg J, Zhivotovsky B, Olsson M. Caspase-2: an orphan enzyme out of the shadows. Oncogene 2017; 36:5441-5444. [PMID: 28581521 DOI: 10.1038/onc.2017.169] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 04/18/2017] [Accepted: 04/25/2017] [Indexed: 12/20/2022]
Abstract
Caspase-2 has been embodied as an initiator or executioner protease in diverse apoptotic scenarios. However, accumulating evidence is challenging this view, pertaining to its true role. The enzyme's catalytic activity is currently implicated in various functions required for correct cell proliferation, such as counteracting genomic instability, as well as suppressing tumorigenesis. Here, apart from summarizing the latest observations in caspase-2-related research, we make an attempt to reconcile these findings and discuss their implications for future directions.
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Affiliation(s)
- J Forsberg
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - B Zhivotovsky
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Faculty of Fundamental Medicine, Lomonosov Moscow State University, Moscow, Russia
| | - M Olsson
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
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19
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McDiarmid CS, Friesen CR, Ballen C, Olsson M. Sexual coloration and sperm performance in the Australian painted dragon lizard,
Ctenophorus pictus. J Evol Biol 2017; 30:1303-1312. [DOI: 10.1111/jeb.13092] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 04/12/2017] [Indexed: 12/16/2022]
Affiliation(s)
- C. S. McDiarmid
- School of Life and Environmental Sciences University of Sydney Sydney NSW Australia
| | - C. R. Friesen
- School of Life and Environmental Sciences University of Sydney Sydney NSW Australia
| | - C. Ballen
- College of Biological Sciences University of Minnesota Minneapolis MN USA
| | - M. Olsson
- Department of Biological and Environmental Sciences Göteborg University Göteborg Sweden
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20
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Dong Y, Arif A, Olsson M, Cali V, Hardman B, Dosanjh M, Lauer M, Midura RJ, Hascall VC, Brown KL, Johnson P. Endotoxin free hyaluronan and hyaluronan fragments do not stimulate TNF-α, interleukin-12 or upregulate co-stimulatory molecules in dendritic cells or macrophages. Sci Rep 2016; 6:36928. [PMID: 27869206 PMCID: PMC5116629 DOI: 10.1038/srep36928] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [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: 08/18/2016] [Accepted: 10/24/2016] [Indexed: 12/24/2022] Open
Abstract
The extracellular matrix glycosaminoglycan, hyaluronan, has been described as a regulator of tissue inflammation, with hyaluronan fragments reported to stimulate innate immune cells. High molecular mass hyaluronan is normally present in tissues, but upon inflammation lower molecular mass fragments are generated. It is unclear if these hyaluronan fragments induce an inflammatory response or are a consequence of inflammation. In this study, mouse bone marrow derived macrophages and dendritic cells (DCs) were stimulated with various sizes of hyaluronan from different sources, fragmented hyaluronan, hyaluronidases and heavy chain modified-hyaluronan (HA-HC). Key pro-inflammatory molecules, tumour necrosis factor alpha, interleukin-1 beta, interleukin-12, CCL3, and the co-stimulatory molecules, CD40 and CD86 were measured. Only human umbilical cord hyaluronan, bovine testes and Streptomyces hyaluronlyticus hyaluronidase stimulated macrophages and DCs, however, these reagents were found to be contaminated with endotoxin, which was not fully removed by polymyxin B treatment. In contrast, pharmaceutical grade hyaluronan and hyaluronan fragments failed to stimulate in vitro-derived or ex vivo macrophages and DCs, and did not induce leukocyte recruitment after intratracheal instillation into mouse lungs. Hence, endotoxin-free pharmaceutical grade hyaluronan does not stimulate macrophages and DCs in our inflammatory models. These results emphasize the importance of ensuring hyaluronan preparations are endotoxin free.
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Affiliation(s)
- Yifei Dong
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, B.C. V6T 1Z3, Canada
| | - Arif Arif
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, B.C. V6T 1Z3, Canada
| | - Mia Olsson
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, B.C. V6T 1Z3, Canada.,Department of Pediatrics, British Columbia Children's Hospital Research Institute, Vancouver, B.C. Canada
| | - Valbona Cali
- Department of Biomedical Engineering, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio 44195, U.S.A
| | - Blair Hardman
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, B.C. V6T 1Z3, Canada
| | - Manisha Dosanjh
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, B.C. V6T 1Z3, Canada
| | - Mark Lauer
- Department of Biomedical Engineering, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio 44195, U.S.A
| | - Ronald J Midura
- Department of Biomedical Engineering, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio 44195, U.S.A
| | - Vincent C Hascall
- Department of Biomedical Engineering, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio 44195, U.S.A
| | - Kelly L Brown
- Department of Pediatrics, British Columbia Children's Hospital Research Institute, Vancouver, B.C. Canada
| | - Pauline Johnson
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, B.C. V6T 1Z3, Canada
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21
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Magnusson M, Karlsson R, Olander Å, Olsson M. Health certification of schools in north east Gothenburg, Sweden – a step towards health equity. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw175.116] [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: 11/13/2022] Open
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22
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Söderholm M, Almgren P, Jood K, Stanne TM, Olsson M, Ilinca A, Lorentzen E, Norrving B, Engström G, Melander O, Jern C, Lindgren A. Exome array analysis of ischaemic stroke: results from a southern Swedish study. Eur J Neurol 2016; 23:1722-1728. [PMID: 27469034 DOI: 10.1111/ene.13086] [Citation(s) in RCA: 13] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 06/09/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE Genome-wide association (GWA) studies have identified a few risk loci for ischaemic stroke, but these variants explain only a small part of the genetic contribution to the disease. Coding variants associated with amino acid substitutions or premature termination of protein synthesis could have a large effect on disease risk. We performed an exome array analysis for ischaemic stroke. METHODS Patients with ischaemic stroke (n = 2385) and control subjects (n = 6077) from three Swedish studies were genotyped with the Illumina HumanOmniExpressExome BeadChip. Single-variant association analysis and gene-based tests were performed of exome variants with minor allele frequency of < 5%. A separate GWA analysis was also performed, based on 700 000 genotyped common markers and subsequent imputation. RESULTS No exome variant or gene was significantly associated with all ischaemic stroke after Bonferroni correction (all P > 1.8 × 10-6 for single-variant and >4.15 × 10-6 for gene-based analysis). The strongest association in single-variant analysis was found for a missense variant in the DNAH11 gene (rs143362381; P = 5.01 × 10-6 ). In gene-based tests, the strongest association was for the ZBTB20 gene (P = 7.9 × 10-5 ). The GWA analysis showed that the sample was homogenous (median genomic inflation factor = 1.006). No genome-wide significant association with overall ischaemic stroke risk was found. However, previously reported associations for the PITX2 and ZFHX3 gene loci with cardioembolic stroke subtype were replicated (P = 7 × 10-15 and 6 × 10-3 ). CONCLUSIONS This exome array analysis did not identify any single variants or genes reaching the pre-defined significance level for association with ischaemic stroke. Further studies on exome variants should be performed in even larger, well-defined and subtyped samples.
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Affiliation(s)
- M Söderholm
- Department of Clinical Sciences, Malmö, Lund University, Lund, Sweden.,Department of Neurology and Rehabilitation Medicine, Skåne University Hospital, Lund and Malmö, Sweden
| | - P Almgren
- Department of Clinical Sciences, Malmö, Lund University, Lund, Sweden
| | - K Jood
- Department of Clinical Neuroscience and Rehabilitation, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - T M Stanne
- Department of Medical and Clinical Genetics, Institute of Biomedicine, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - M Olsson
- Department of Medical and Clinical Genetics, Institute of Biomedicine, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - A Ilinca
- Department of Neurology and Rehabilitation Medicine, Skåne University Hospital, Lund and Malmö, Sweden.,Department of Clinical Sciences Lund, Neurology, Lund University, Lund, Sweden
| | - E Lorentzen
- Bioinformatics Core Facility, University of Gothenburg, Gothenburg, Sweden
| | - B Norrving
- Department of Neurology and Rehabilitation Medicine, Skåne University Hospital, Lund and Malmö, Sweden.,Department of Clinical Sciences Lund, Neurology, Lund University, Lund, Sweden
| | - G Engström
- Department of Clinical Sciences, Malmö, Lund University, Lund, Sweden
| | - O Melander
- Department of Clinical Sciences, Malmö, Lund University, Lund, Sweden
| | - C Jern
- Department of Medical and Clinical Genetics, Institute of Biomedicine, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - A Lindgren
- Department of Neurology and Rehabilitation Medicine, Skåne University Hospital, Lund and Malmö, Sweden.,Department of Clinical Sciences Lund, Neurology, Lund University, Lund, Sweden
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23
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Bergkvist M, Olsson M, Sandberg-Wollheim M. No evidence for genetic linkage between development of multiple sclerosis and components of the IFN system and the JA K-STAT pathway. Mult Scler 2016; 10:87-8. [PMID: 14760959 DOI: 10.1191/1352458504ms976sr] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Multiple sclerosis (MS) is an inflammatory, demyelinating disease of the central nervous system (CNS). Several observations suggest that the interferon system may be of interest in the study of MS development. To investigate whether polymorphism in components of the IFN system and the JA K-STAT pathway influence susceptibility to MS, we performed a linkage analysis between polymorphic loci in or close to the IFN gamma, IFN gamma recepto r, IFN alpha/beta recepto r, JA K 1, STAT 1 and STAT 3 genes in 27 Swedish families with at least two members having MS. Tests for transmission disequilibrium and nonparametric linkage analysis gave negative results. We found no evidence for linkage between MS and any of these loci.
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Affiliation(s)
- M Bergkvist
- Department of Neurology, University Hospital, SE-221 85 Lund, Sweden.
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24
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Tengvall K, Kozyrev S, Kierczak M, Bergvall K, Farias FHG, Ardesjö-Lundgren B, Olsson M, Murén E, Hagman R, Leeb T, Pielberg G, Hedhammar Å, Andersson G, Lindblad-Toh K. Multiple regulatory variants located in cell type-specific enhancers within the PKP2 locus form major risk and protective haplotypes for canine atopic dermatitis in German shepherd dogs. BMC Genet 2016; 17:97. [PMID: 27357287 PMCID: PMC4928279 DOI: 10.1186/s12863-016-0404-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 02/08/2016] [Accepted: 06/20/2016] [Indexed: 12/30/2022] Open
Abstract
Background Canine atopic dermatitis (CAD) is a chronic inflammatory skin disease triggered by allergic reactions involving IgE antibodies directed towards environmental allergens. We previously identified a ~1.5 Mb locus on canine chromosome 27 associated with CAD in German shepherd dogs (GSDs). Fine-mapping indicated association closest to the PKP2 gene encoding plakophilin 2. Results Additional genotyping and association analyses in GSDs combined with control dogs from five breeds with low-risk for CAD revealed the top SNP 27:19,086,778 (p = 1.4 × 10−7) and a rare ~48 kb risk haplotype overlapping the PKP2 gene and shared only with other high-risk CAD breeds. We selected altogether nine SNPs (four top-associated in GSDs and five within the ~48 kb risk haplotype) that spanned ~280 kb forming one risk haplotype carried by 35 % of the GSD cases and 10 % of the GSD controls (OR = 5.1, p = 5.9 × 10−5), and another haplotype present in 85 % of the GSD cases and 98 % of the GSD controls and conferring a protective effect against CAD in GSDs (OR = 0.14, p = 0.0032). Eight of these SNPs were analyzed for transcriptional regulation using reporter assays where all tested regions exerted regulatory effects on transcription in epithelial and/or immune cell lines, and seven SNPs showed allelic differences. The DNA fragment with the top-associated SNP 27:19,086,778 displayed the highest activity in keratinocytes with 11-fold induction of transcription by the risk allele versus 8-fold by the control allele (pdifference = 0.003), and also mapped close (~3 kb) to an ENCODE skin-specific enhancer region. Conclusions Our experiments indicate that multiple CAD-associated genetic variants located in cell type-specific enhancers are involved in gene regulation in different cells and tissues. No single causative variant alone, but rather multiple variants combined in a risk haplotype likely contribute to an altered expression of the PKP2 gene, and possibly nearby genes, in immune and epithelial cells, and predispose GSDs to CAD. Electronic supplementary material The online version of this article (doi:10.1186/s12863-016-0404-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Katarina Tengvall
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.
| | - Sergey Kozyrev
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Marcin Kierczak
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Kerstin Bergvall
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Fabiana H G Farias
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Brita Ardesjö-Lundgren
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.,Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Mia Olsson
- Department of Medicine, Rheumatology Unit, Karolinska Institute, Stockholm, Sweden
| | - Eva Murén
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Ragnvi Hagman
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Tosso Leeb
- Institute of Genetics, University of Bern, Bern, Switzerland
| | - Gerli Pielberg
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Åke Hedhammar
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Göran Andersson
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Kerstin Lindblad-Toh
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.,Broad Institute of MIT and Harvard, Cambridge, MA, USA
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25
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Olsson M, Kierczak M, Karlsson Å, Jabłońska J, Leegwater P, Koltookian M, Abadie J, De Citres CD, Thomas A, Hedhammar Å, Tintle L, Lindblad-Toh K, Meadows JRS. Absolute quantification reveals the stable transmission of a high copy number variant linked to autoinflammatory disease. BMC Genomics 2016; 17:299. [PMID: 27107962 PMCID: PMC4841964 DOI: 10.1186/s12864-016-2619-0] [Citation(s) in RCA: 4] [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: 12/15/2015] [Accepted: 04/13/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Dissecting the role copy number variants (CNVs) play in disease pathogenesis is directly reliant on accurate methods for quantification. The Shar-Pei dog breed is predisposed to a complex autoinflammatory disease with numerous clinical manifestations. One such sign, recurrent fever, was previously shown to be significantly associated with a novel, but unstable CNV (CNV_16.1). Droplet digital PCR (ddPCR) offers a new mechanism for CNV detection via absolute quantification with the promise of added precision and reliability. The aim of this study was to evaluate ddPCR in relation to quantitative PCR (qPCR) and to assess the suitability of the favoured method as a genetic test for Shar-Pei Autoinflammatory Disease (SPAID). RESULTS One hundred and ninety-six individuals were assayed using both PCR methods at two CNV positions (CNV_14.3 and CNV_16.1). The digital method revealed a striking result. The CNVs did not follow a continuum of alleles as previously reported, rather the alleles were stable and pedigree analysis showed they adhered to Mendelian segregation. Subsequent analysis of ddPCR case/control data confirmed that both CNVs remained significantly associated with the subphenotype of fever, but also to the encompassing SPAID complex (p < 0.001). In addition, harbouring CNV_16.1 allele five (CNV_16.1|5) resulted in a four-fold increase in the odds for SPAID (p < 0.001). The inclusion of a genetic marker for CNV_16.1 in a genome-wide association test revealed that this variant explained 9.7 % of genetic variance and 25.8 % of the additive genetic heritability of this autoinflammatory disease. CONCLUSIONS This data shows the utility of the ddPCR method to resolve cryptic copy number inheritance patterns and so open avenues of genetic testing. In its current form, the ddPCR test presented here could be used in canine breeding to reduce the number of homozygote CNV_16.1|5 individuals and thereby to reduce the prevalence of disease in this breed.
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Affiliation(s)
- M Olsson
- Department of Medicine, Rheumatology Unit, Karolinska Institute, Stockholm, Sweden
| | - M Kierczak
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Å Karlsson
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - J Jabłońska
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - P Leegwater
- Department of Clinical Sciences of Companion Animals, Utrecht University, Utrecht, Netherlands
| | - M Koltookian
- Broad Institute of MIT and Harvard, Boston, MA, USA
| | - J Abadie
- LUNAM University, Oniris, AMaROC Unit, Nantes, F-44307, France
| | | | - A Thomas
- ANTAGENE Animal Genetics Laboratory, La Tour de Salvagny, Lyon, 69, France
| | - Å Hedhammar
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - L Tintle
- Wurtsboro Veterinary Clinic, Wurtsboro, New York, USA
| | - K Lindblad-Toh
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.,Broad Institute of MIT and Harvard, Boston, MA, USA
| | - J R S Meadows
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.
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Ljungström G, Stjernstedt M, Wapstra E, Olsson M. Selection and constraints on offspring size-number trade-offs in sand lizards (Lacerta agilis). J Evol Biol 2016; 29:979-90. [PMID: 26851437 DOI: 10.1111/jeb.12838] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [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: 08/20/2015] [Revised: 01/25/2016] [Accepted: 01/31/2016] [Indexed: 11/27/2022]
Abstract
The trade-off between offspring size and number is a central component of life-history theory, postulating that larger investment into offspring size inevitably decreases offspring number. This trade-off is generally discussed in terms of genetic, physiological or morphological constraints; however, as among-individual differences can mask individual trade-offs, the underlying mechanisms may be difficult to reveal. In this study, we use multivariate analyses to investigate whether there is a trade-off between offspring size and number in a population of sand lizards by separating among- and within-individual patterns using a 15-year data set collected in the wild. We also explore the ecological and evolutionary causes and consequences of this trade-off by investigating how a female's resource (condition)- vs. age-related size (snout-vent length) influences her investment into offspring size vs. number (OSN), whether these traits are heritable and under selection and whether the OSN trade-off has a genetic component. We found a negative correlation between offspring size and number within individual females and physical constraints (size of body cavity) appear to limit the number of eggs that a female can produce. This suggests that the OSN trade-off occurs due to resource constraints as a female continues to grow throughout life and, thus, produces larger clutches. In contrast to the assumptions of classic OSN theory, we did not detect selection on offspring size; however, there was directional selection for larger clutch sizes. The repeatabilities of both offspring size and number were low and we did not detect any additive genetic variance in either trait. This could be due to strong selection (past or current) on these life-history traits, or to insufficient statistical power to detect significant additive genetic effects. Overall, the findings of this study are an important illustration of how analyses of within-individual patterns can reveal trade-offs and their underlying causes, with potential evolutionary and ecological consequences that are otherwise hidden by among-individual variation.
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Affiliation(s)
- G Ljungström
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - M Stjernstedt
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - E Wapstra
- School of Biological Sciences, University of Tasmania, Hobart, Tas., Australia
| | - M Olsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.,School of Biological Sciences, University of Sydney, Sydney, NSW, Australia
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Tengvall K, Kierczak M, Bergvall K, Olsson M, Frankowiack M, Farias FHG, Pielberg G, Carlborg Ö, Leeb T, Andersson G, Hammarström L, Hedhammar Å, Lindblad-Toh K. Correction: Genome-Wide Analysis in German Shepherd Dogs Reveals Association of a Locus on CFA 27 with Atopic Dermatitis. PLoS Genet 2015; 11:e1005740. [PMID: 26657407 PMCID: PMC4676723 DOI: 10.1371/journal.pgen.1005740] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Olsson M, Tengvall K, Frankowiack M, Kierczak M, Bergvall K, Axelsson E, Tintle L, Marti E, Roosje P, Leeb T, Hedhammar Å, Hammarström L, Lindblad-Toh K. Correction: Genome-Wide Analyses Suggest Mechanisms Involving Early B-Cell Development in Canine IgA Deficiency. PLoS One 2015; 10:e0138405. [PMID: 26367283 PMCID: PMC4569264 DOI: 10.1371/journal.pone.0138405] [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: 12/02/2022] Open
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Olsson M, Tengvall K, Frankowiack M, Kierczak M, Bergvall K, Axelsson E, Tintle L, Marti E, Roosje P, Leeb T, Hedhammar Å, Hammarström L, Lindblad-Toh K. Genome-Wide Analyses Suggest Mechanisms Involving Early B-Cell Development in Canine IgA Deficiency. PLoS One 2015. [PMID: 26225558 PMCID: PMC4520476 DOI: 10.1371/journal.pone.0133844] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Immunoglobulin A deficiency (IgAD) is the most common primary immune deficiency disorder in both humans and dogs, characterized by recurrent mucosal tract infections and a predisposition for allergic and other immune mediated diseases. In several dog breeds, low IgA levels have been observed at a high frequency and with a clinical resemblance to human IgAD. In this study, we used genome-wide association studies (GWAS) to identify genomic regions associated with low IgA levels in dogs as a comparative model for human IgAD. We used a novel percentile groups-approach to establish breed-specific cut-offs and to perform analyses in a close to continuous manner. GWAS performed in four breeds prone to low IgA levels (German shepherd, Golden retriever, Labrador retriever and Shar-Pei) identified 35 genomic loci suggestively associated (p <0.0005) to IgA levels. In German shepherd, three genomic regions (candidate genes include KIRREL3 and SERPINA9) were genome-wide significantly associated (p <0.0002) with IgA levels. A ~20kb long haplotype on CFA28, significantly associated (p = 0.0005) to IgA levels in Shar-Pei, was positioned within the first intron of the gene SLIT1. Both KIRREL3 and SLIT1 are highly expressed in the central nervous system and in bone marrow and are potentially important during B-cell development. SERPINA9 expression is restricted to B-cells and peaks at the time-point when B-cells proliferate into antibody-producing plasma cells. The suggestively associated regions were enriched for genes in Gene Ontology gene sets involving inflammation and early immune cell development.
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Affiliation(s)
- Mia Olsson
- Department of Laboratory Medicine, Division of Clinical Immunology, Karolinska Institute at Karolinska University Hospital, Huddinge, Sweden
- * E-mail: (KT); (MO); (KLT)
| | - Katarina Tengvall
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- * E-mail: (KT); (MO); (KLT)
| | - Marcel Frankowiack
- Department of Laboratory Medicine, Division of Clinical Immunology, Karolinska Institute at Karolinska University Hospital, Huddinge, Sweden
| | - Marcin Kierczak
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Kerstin Bergvall
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Erik Axelsson
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Linda Tintle
- Wurtsboro Veterinary Clinic, Wurtsboro, New York, United States of America
| | - Eliane Marti
- Department of Clinical Veterinary Medicine, Division of Clinical Dermatology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
- Dermfocus, Vetsuisse Faculty, University of Bern, Bern Switzerland
| | - Petra Roosje
- Dermfocus, Vetsuisse Faculty, University of Bern, Bern Switzerland
- Department of Clinical Research and Veterinary Public Health, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Tosso Leeb
- Dermfocus, Vetsuisse Faculty, University of Bern, Bern Switzerland
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Åke Hedhammar
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Lennart Hammarström
- Department of Laboratory Medicine, Division of Clinical Immunology, Karolinska Institute at Karolinska University Hospital, Huddinge, Sweden
| | - Kerstin Lindblad-Toh
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
- * E-mail: (KT); (MO); (KLT)
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Frankowiack M, Olsson M, Cluff HD, Evans AL, Hellman L, Månsson J, Arnemo JM, Hammarström L. IgA deficiency in wolves from Canada and Scandinavia. Dev Comp Immunol 2015; 50:26-28. [PMID: 25530092 DOI: 10.1016/j.dci.2014.12.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 12/10/2014] [Accepted: 12/11/2014] [Indexed: 06/04/2023]
Abstract
Immunoglobulin A deficiency (IgAD) is the most common primary immunodeficiency in both humans and selected breeds of domestic dogs. In both species, IgAD is associated with recurrent infections and immune mediated diseases. Previous results imply that IgAD is also common in the wild ancestor of domestic dogs, the gray wolf. Here, we report that serum IgA concentrations are significantly different in Scandinavian and Canadian wolves (p = 3.252e-15) with an increased prevalence for IgAD in Scandinavian wolves (60%), which is as high as those found in high-risk dog breeds.
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Affiliation(s)
- Marcel Frankowiack
- Division of Clinical Immunology (F79), Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital, SE-14186 Huddinge, Sweden
| | - Mia Olsson
- Division of Clinical Immunology (F79), Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital, SE-14186 Huddinge, Sweden
| | - H Dean Cluff
- Department of Environment and Natural Resources, Government of the Northwest Territories, Yellowknife, Northwest Territories, Canada
| | - Alina L Evans
- Department of Forestry and Wildlife Management, Faculty of Applied Ecology and Agricultural Sciences, Hedmark University College, Campus Evenstad, NO-2418 Elverum, Norway
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, SE-75124 Uppsala, Sweden
| | - Johan Månsson
- Department of Ecology, Faculty of Natural Resources and Agricultural Sciences, Swedish University of Agricultural Sciences, SE-730 91 Grimsö, Riddarhyttan, Sweden
| | - Jon M Arnemo
- Department of Forestry and Wildlife Management, Faculty of Applied Ecology and Agricultural Sciences, Hedmark University College, Campus Evenstad, NO-2418 Elverum, Norway; Department of Wildlife, Fish and Environmental Studies, Faculty of Forest Sciences, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden
| | - Lennart Hammarström
- Division of Clinical Immunology (F79), Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital, SE-14186 Huddinge, Sweden.
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Lee-Sayer SSM, Dong Y, Arif AA, Olsson M, Brown KL, Johnson P. The where, when, how, and why of hyaluronan binding by immune cells. Front Immunol 2015; 6:150. [PMID: 25926830 PMCID: PMC4396519 DOI: 10.3389/fimmu.2015.00150] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [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: 01/26/2015] [Accepted: 03/20/2015] [Indexed: 01/04/2023] Open
Abstract
Hyaluronan is made and extruded from cells to form a pericellular or extracellular matrix (ECM) and is present in virtually all tissues in the body. The size and form of hyaluronan present in tissues are indicative of a healthy or inflamed tissue, and the interactions of hyaluronan with immune cells can influence their response. Thus, in order to understand how inflammation is regulated, it is necessary to understand these interactions and their consequences. Although there is a large turnover of hyaluronan in our bodies, the large molecular mass form of hyaluronan predominates in healthy tissues. Upon tissue damage and/or infection, the ECM and hyaluronan are broken down and an inflammatory response ensues. As inflammation is resolved, the ECM is restored, and high molecular mass hyaluronan predominates again. Immune cells encounter hyaluronan in the tissues and lymphoid organs and respond differently to high and low molecular mass forms. Immune cells differ in their ability to bind hyaluronan and this can vary with the cell type and their activation state. For example, peritoneal macrophages do not bind soluble hyaluronan but can be induced to bind after exposure to inflammatory stimuli. Likewise, naïve T cells, which typically express low levels of the hyaluronan receptor, CD44, do not bind hyaluronan until they undergo antigen-stimulated T cell proliferation and upregulate CD44. Despite substantial knowledge of where and when immune cells bind hyaluronan, why immune cells bind hyaluronan remains a major outstanding question. Here, we review what is currently known about the interactions of hyaluronan with immune cells in both healthy and inflamed tissues and discuss how hyaluronan binding by immune cells influences the inflammatory response.
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Affiliation(s)
- Sally S M Lee-Sayer
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia , Vancouver, BC , Canada
| | - Yifei Dong
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia , Vancouver, BC , Canada
| | - Arif A Arif
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia , Vancouver, BC , Canada
| | - Mia Olsson
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia , Vancouver, BC , Canada
| | - Kelly L Brown
- Department of Pediatrics, Child and Family Research Institute, University of British Columbia , Vancouver, BC , Canada
| | - Pauline Johnson
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia , Vancouver, BC , Canada
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Nilsson M, Petersson L, Olsson M, Wennman-Larsen A, Alexanderson K. 35 Return to work after breast cancer: women's experiences of encounters with different stakeholders. Eur J Oncol Nurs 2014. [DOI: 10.1016/s1462-3889(14)70054-7] [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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Olsson M, Forsberg J, Zhivotovsky B. Caspase-2: the reinvented enzyme. Oncogene 2014; 34:1877-82. [DOI: 10.1038/onc.2014.139] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 04/16/2014] [Accepted: 04/16/2014] [Indexed: 12/11/2022]
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Geller T, Prakash V, Batanian J, Guzman M, Duncavage E, Gershon T, Crowther A, Wu J, Liu H, Fang F, Davis I, Tripolitsioti D, Ma M, Kumar K, Grahlert J, Egli K, Fiaschetti G, Shalaby T, Grotzer M, Baumgartner M, Braoudaki M, Lambrou GI, Giannikou K, Millionis V, Papadodima SA, Settas N, Sfakianos G, Stefanaki K, Kattamis A, Spiliopoulou CA, Tzortzatou-Stathopoulou F, Kanavakis E, Gholamin S, Mitra S, Feroze A, Zhang M, Esparza R, Kahn S, Richard C, Achrol A, Volkmer A, Liu J, Volkmer J, Majeti R, Weissman I, Cheshier S, Bhatia K, Brown N, Teague J, Lo P, Challis J, Beshay V, Sullivan M, Mechinaud F, Hansford J, Arifin MZ, Dahlan RH, Sobana M, Saputra P, Tisell MT, Danielsson A, Caren H, Bhardwaj R, Chakravadhanula M, Hampton C, Ozals V, Georges J, Decker W, Kodibagkar V, Nguyen A, Legrain M, Gaub MP, Pencreach E, Chenard MP, Guenot D, Entz-Werle N, Kanemura Y, Ichimura K, Shofuda T, Nishikawa R, Yamasaki M, Shibui S, Arai H, Xia J, Brian A, Prins R, Pennell C, Moertel C, Olin M, Bie L, Zhang X, Liu H, Olsson M, Kling T, Nelander S, Biassoni V, Bongarzone I, Verderio P, Massimino M, Magni R, Pizzamiglio S, Ciniselli C, Taverna E, De Bortoli M, Luchini A, Liotta L, Barzano E, Spreafico F, Visse E, Sanden E, Darabi A, Siesjo P, Jackson S, Cohen K, Lin D, Burger P, Rodriguez F, Yao X, Liucheng R, Qin L, Na T, Meilin W, Zhengdong Z, Yongjun F, Pfeifer S, Nister M, de Stahl TD, Basmaci E, Orphanidou-Vlachou E, Brundler MA, Sun Y, Davies N, Wilson M, Pan X, Arvanitis T, Grundy R, Peet A, Eden C, Ju B, Phoenix T, Nimmervoll B, Tong Y, Ellison D, Lessman C, Taylor M, Gilbertson R, Folgiero V, del Bufalo F, Carai A, Cefalo MG, Citti A, Rutella S, Locatelli F, Mastronuzzi A, Maher O, Khatua S, Zaky W, Lourdusamy A, Meijer L, Layfield R, Grundy R, Jones DTW, Capper D, Sill M, Hovestadt V, Schweizer L, Lichter P, Zagzag D, Karajannis MA, Aldape KD, Korshunov A, von Deimling A, Pfister S, Chakrabarty A, Feltbower R, Sheridon E, Hassan H, Shires M, Picton S, Hatziagapiou K, Braoudaki M, Lambrou GI, Tsorteki F, Tzortzatou-Stathopoulou F, Bethanis K, Gemou-Engesaeth V, Chi SN, Bandopadhayay P, Janeway K, Pinches N, Malkin H, Kieran MW, Manley PE, Green A, Goumnerova L, Ramkissoon S, Harris MH, Ligon KL, Kahlert U, Suarez M, Maciaczyk J, Bar E, Eberhart C, Kenchappa R, Krishnan N, Forsyth P, McKenzie B, Pisklakova A, McFadden G, Kenchappa R, Forsyth P, Pan W, Rodriguez L, Glod J, Levy JM, Thompson J, Griesinger A, Amani V, Donson A, Birks D, Morgan M, Handler M, Foreman N, Thorburn A, Lulla RR, Laskowski J, Fangusaro J, DiPatri AJ, Alden T, Tomita T, Vanin EF, Goldman S, Soares MB, Remke M, Ramaswamy V, Wang X, Jorgensen F, Morrissy AS, Marra M, Packer R, Bouffet E, Pfister S, Jabado N, Taylor M, Cole B, Rudzinski E, Anderson M, Bloom K, Lee A, Leary S, Leprivier G, Remke M, Rotblat B, Agnihotri S, Kool M, Derry B, Pfister S, Taylor MD, Sorensen PH, Dobson T, Busschers E, Taylor H, Hatcher R, Fangusaro J, Lulla R, Goldman S, Rajaram V, Das C, Gopalakrishnan V. TUMOUR BIOLOGY. Neuro Oncol 2014; 16:i137-i145. [PMCID: PMC4046298 DOI: 10.1093/neuonc/nou082] [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: 07/22/2023] Open
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Olsson M, Frankowiack M, Tengvall K, Roosje P, Fall T, Ivansson E, Bergvall K, Hansson-Hamlin H, Sundberg K, Hedhammar A, Lindblad-Toh K, Hammarström L. The dog as a genetic model for immunoglobulin A (IgA) deficiency: identification of several breeds with low serum IgA concentrations. Vet Immunol Immunopathol 2014; 160:255-9. [PMID: 24935667 DOI: 10.1016/j.vetimm.2014.05.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 05/13/2014] [Accepted: 05/16/2014] [Indexed: 12/25/2022]
Abstract
Immunoglobulin A (IgA) serves as the basis of the secretory immune system by protecting the lining of mucosal sites from pathogens. In both humans and dogs, IgA deficiency (IgAD) is associated with recurrent infections of mucosal sites and immune-mediated diseases. Low concentrations of serum IgA have previously been reported to occur in a number of dog breeds but no generally accepted cut-off value has been established for canine IgAD. The current study represents the largest screening to date of IgA in dogs in terms of both number of dogs (n=1267) and number of breeds studied (n=22). Serum IgA concentrations were quantified by using capture ELISA and were found to vary widely between breeds. We also found IgA to be positively correlated with age (p<0.0001). Apart from the two breeds previously reported as predisposed to low IgA (Shar-Pei and German shepherd), we identified six additional breeds in which ≥ 10% of all tested dogs had very low (<0.07 g/l) IgA concentrations (Hovawart, Norwegian elkhound, Nova Scotia duck tolling retriever, Bullterrier, Golden retriever and Labrador retriever). In addition, we discovered low IgA concentrations to be significantly associated with canine atopic dermatitis (CAD, p<0.0001) and pancreatic acinar atrophy (PAA, p=0.04) in German shepherds.
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Affiliation(s)
- Mia Olsson
- Division of Clinical Immunology (F79), Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital, SE-14186 Huddinge, Sweden; Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Box 582, SE-75123 Uppsala, Sweden.
| | - Marcel Frankowiack
- Division of Clinical Immunology (F79), Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital, SE-14186 Huddinge, Sweden
| | - Katarina Tengvall
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Box 582, SE-75123 Uppsala, Sweden
| | - Petra Roosje
- Department of Clinical Veterinary Science, Vetsuisse Faculty, University of Bern, PO-Box 8466, CH-3001 Bern, Switzerland
| | - Tove Fall
- Department of Medical Sciences, Molecular Epidemiology and Science for Life Laboratory, Uppsala University, Dag Hammarskjöldsväg 14B, SE-75237 Uppsala, Sweden
| | - Emma Ivansson
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Box 582, SE-75123 Uppsala, Sweden
| | - Kerstin Bergvall
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Box 7054, SE-750 07 Uppsala, Sweden
| | - Helene Hansson-Hamlin
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Box 7054, SE-750 07 Uppsala, Sweden
| | - Katarina Sundberg
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Box 7023, SE-750 07 Uppsala, Sweden
| | - Ake Hedhammar
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Box 7054, SE-750 07 Uppsala, Sweden
| | - Kerstin Lindblad-Toh
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Box 582, SE-75123 Uppsala, Sweden; Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Lennart Hammarström
- Division of Clinical Immunology (F79), Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital, SE-14186 Huddinge, Sweden.
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Glogner S, Rosengren A, Olsson M, Gudbjörnsdottir S, Svensson AM, Lind M. The association between BMI and hospitalization for heart failure in 83,021 persons with Type 2 diabetes: a population-based study from the Swedish National Diabetes Registry. Diabet Med 2014; 31:586-94. [PMID: 24147878 DOI: 10.1111/dme.12340] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 09/12/2013] [Accepted: 10/17/2013] [Indexed: 01/25/2023]
Abstract
AIM'S The aim was to To study the relationship between BMI and hospitalization for heart failure in people with Type 2 diabetes. METHODS We identified 83 021 individuals with Type 2 diabetes from the Swedish National Diabetes Registry during 1998-2003, who were followed until hospitalization for heart failure, death or end of follow-up on 31 December 2009. Cox regression analyses were performed, adjusting for age, sex, HbA(1c), blood pressure, diabetes duration, smoking, microalbuminuria, cardiac co-morbidities, glucose-lowering and anti-hypertensive medications. RESULTS During a median follow-up of 7.2 years, 10 969 patients (13.2%) were hospitalized with heart failure. By categories of BMI, with BMI 20 to < 25 kg/m(2) as the reference, hazard ratios for patients during follow-up were 1.07 (95% CI 0.91-1.26) for a mean BMI of < 20 kg/m(2), 1.04 (95% CI 0.98-1.11) for BMI 25 to < 27.5 kg/m(2), 1.22 (95% CI 1.15-1.30) for BMI 27.5 to < 30 kg/m(2), 1.54 (95% CI 1.45-1.63) for BMI 30 to < 35 kg/m(2), 2.16 (95% CI 2.00-2.33) for BMI 35 to < 40 kg/m(2) and 3.22 (95% CI 2.88-3.60) for BMI 40 kg/m(2) or higher. There was a significant interaction between BMI and sex (P = 0.0006), with numerically higher hazard ratios for hospitalization for heart failure within each BMI category for men than for women. CONCLUSIONS Obesity is strongly related to hospitalization for heart failure in people with Type 2 diabetes, and the relationship is somewhat stronger for men than for women. Preventing weight gain and promoting weight loss may be crucial in reducing the incidence of future hospitalizations for heart failure in this population.
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Affiliation(s)
- S Glogner
- Department of Medicine, NU-Hospital Organization, Trollhättan, Sweden
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Davidsson A, Kjerstadius H, Haghighatafshar S, Fick J, Olsson M, Wachtmeister H, Eriksson E, la Cour Jansen J. Effect of anaerobic digestion at 35, 55 and 60 °C on pharmaceuticals and organic contaminants. Water Sci Technol 2014; 69:1282-1288. [PMID: 24647195 DOI: 10.2166/wst.2014.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The application of treated sewage sludge on farmland is a suggested method for recycling nutrients and reducing demand for commercial fertilizer. However, sludge needs to be safe from possible contaminants which can cause acute and long-term health and environmental problems. Residual pharmaceuticals and organic contaminants are mentioned as emerging threats since wastewater treatment plants are not designed to degrade these substances. The aim of this study was to screen and evaluate the presence, and reduction, of pharmaceuticals and polycyclic aromatic hydrocarbons (PAHs) during anaerobic digestion of mixed primary and waste-activated sludge at 35, 55 and 60 °C and during pasteurization at 70 °C. The study showed the difficulty of analysing pharmaceutical compounds in low concentrations in the sludge matrix. No general reduction of these compounds was seen during treatment, but for individual substances some reduction occurred. The PAHs were generally not reduced during digestion or pasteurization, but for three substances (indeno[1,2,3-cd]pyrene and dibenzo[a,h]anthracene (analysed together) and benzo[g,h,i]perylene) reduction (up to 60%) during digestion was seen. Digestion at 35 and 55 °C resulted in about the same order of reduction of the three individual PAHs, which was higher than for digestion at 60 °C.
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Affiliation(s)
- A Davidsson
- Water and Environmental Engineering, Department of Chemical Engineering, Lund University, P.O. Box 124, 221 00 Lund, Sweden E-mail:
| | - H Kjerstadius
- Water and Environmental Engineering, Department of Chemical Engineering, Lund University, P.O. Box 124, 221 00 Lund, Sweden E-mail:
| | - S Haghighatafshar
- Water and Environmental Engineering, Department of Chemical Engineering, Lund University, P.O. Box 124, 221 00 Lund, Sweden E-mail:
| | - J Fick
- Department of Chemistry, Umeå University, 901 87 Umeå, Sweden
| | - M Olsson
- Department of Environmental Engineering, Technical University of Denmark, Miljoevej 113, DK-2800 Kgs. Lyngby, Denmark
| | - H Wachtmeister
- Department of Environmental Engineering, Technical University of Denmark, Miljoevej 113, DK-2800 Kgs. Lyngby, Denmark
| | - E Eriksson
- Department of Environmental Engineering, Technical University of Denmark, Miljoevej 113, DK-2800 Kgs. Lyngby, Denmark
| | - J la Cour Jansen
- Water and Environmental Engineering, Department of Chemical Engineering, Lund University, P.O. Box 124, 221 00 Lund, Sweden E-mail:
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Vakifahmetoglu-Norberg H, Norberg E, Perdomo AB, Olsson M, Ciccosanti F, Orrenius S, Fimia GM, Piacentini M, Zhivotovsky B. Caspase-2 promotes cytoskeleton protein degradation during apoptotic cell death. Cell Death Dis 2013; 4:e940. [PMID: 24309927 PMCID: PMC3877538 DOI: 10.1038/cddis.2013.463] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 10/23/2013] [Accepted: 10/24/2013] [Indexed: 01/28/2023]
Abstract
The caspase family of proteases cleaves large number of proteins resulting in major morphological and biochemical changes during apoptosis. Yet, only a few of these proteins have been reported to selectively cleaved by caspase-2. Numerous observations link caspase-2 to the disruption of the cytoskeleton, although it remains elusive whether any of the cytoskeleton proteins serve as bona fide substrates for caspase-2. Here, we undertook an unbiased proteomic approach to address this question. By differential proteome analysis using two-dimensional gel electrophoresis, we identified four cytoskeleton proteins that were degraded upon treatment with active recombinant caspase-2 in vitro. These proteins were degraded in a caspase-2-dependent manner during apoptosis induced by DNA damage, cytoskeleton disruption or endoplasmic reticulum stress. Hence, degradation of these cytoskeleton proteins was blunted by siRNA targeting of caspase-2 and when caspase-2 activity was pharmacologically inhibited. However, none of these proteins was cleaved directly by caspase-2. Instead, we provide evidence that in cells exposed to apoptotic stimuli, caspase-2 probed these proteins for proteasomal degradation. Taken together, our results depict a new role for caspase-2 in the regulation of the level of cytoskeleton proteins during apoptosis.
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Affiliation(s)
- H Vakifahmetoglu-Norberg
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm 171 77, Sweden
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Olsson M, Tintle L, Kierczak M, Perloski M, Tonomura N, Lundquist A, Murén E, Fels M, Tengvall K, Pielberg G, Dufaure de Citres C, Dorso L, Abadie J, Hanson J, Thomas A, Leegwater P, Hedhammar Å, Lindblad-Toh K, Meadows JRS. Thorough investigation of a canine autoinflammatory disease (AID) confirms one main risk locus and suggests a modifier locus for amyloidosis. PLoS One 2013; 8:e75242. [PMID: 24130694 PMCID: PMC3793984 DOI: 10.1371/journal.pone.0075242] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 08/13/2013] [Indexed: 12/04/2022] Open
Abstract
Autoinflammatory disease (AID) manifests from the dysregulation of the innate immune system and is characterised by systemic and persistent inflammation. Clinical heterogeneity leads to patients presenting with one or a spectrum of phenotypic signs, leading to difficult diagnoses in the absence of a clear genetic cause. We used separate genome-wide SNP analyses to investigate five signs of AID (recurrent fever, arthritis, breed specific secondary dermatitis, otitis and systemic reactive amyloidosis) in a canine comparative model, the pure bred Chinese Shar-Pei. Analysis of 255 DNA samples revealed a shared locus on chromosome 13 spanning two peaks of association. A three-marker haplotype based on the most significant SNP (p<2.6×10−8) from each analysis showed that one haplotypic pair (H13-11) was present in the majority of AID individuals, implicating this as a shared risk factor for all phenotypes. We also noted that a genetic signature (FST) distinguishing the phenotypic extremes of the breed specific Chinese Shar-Pei thick and wrinkled skin, flanked the chromosome 13 AID locus; suggesting that breed development and differentiation has played a parallel role in the genetics of breed fitness. Intriguingly, a potential modifier locus for amyloidosis was revealed on chromosome 14, and an investigation of candidate genes from both this and the chromosome 13 regions revealed significant (p<0.05) renal differential expression in four genes previously implicated in kidney or immune health (AOAH, ELMO1, HAS2 and IL6). These results illustrate that phenotypic heterogeneity need not be a reflection of genetic heterogeneity, and that genetic modifiers of disease could be masked if syndromes were not first considered as individual clinical signs and then as a sum of their component parts.
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Affiliation(s)
- Mia Olsson
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- * E-mail: (MO); (KL-T); (JRSM)
| | - Linda Tintle
- Wurtsboro Veterinary Clinic, Wurtsboro, New York, United States of America
| | - Marcin Kierczak
- Computational Genetics Section, Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Michele Perloski
- Broad Institute of Harvard and Massachusetts Institute of Technology (MIT), Cambridge, MA, United States of America
| | - Noriko Tonomura
- Broad Institute of Harvard and Massachusetts Institute of Technology (MIT), Cambridge, MA, United States of America
- Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, Massachusetts, United States of America
| | - Andrew Lundquist
- Broad Institute of Harvard and Massachusetts Institute of Technology (MIT), Cambridge, MA, United States of America
| | - Eva Murén
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Max Fels
- Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - Katarina Tengvall
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Gerli Pielberg
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | | | - Laetitia Dorso
- LUNAM University, Oniris, AMaROC Unit, Nantes, F-44307, France
| | - Jérôme Abadie
- LUNAM University, Oniris, AMaROC Unit, Nantes, F-44307, France
| | - Jeanette Hanson
- Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Anne Thomas
- ANTAGENE Animal Genetics Laboratory, La Tour de Salvagny (69 Lyon), France
| | - Peter Leegwater
- Department of Clinical Sciences of Companion Animals, Utrecht University, Utrecht, The Netherlands
| | - Åke Hedhammar
- Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Kerstin Lindblad-Toh
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- Broad Institute of Harvard and Massachusetts Institute of Technology (MIT), Cambridge, MA, United States of America
- * E-mail: (MO); (KL-T); (JRSM)
| | - Jennifer R. S. Meadows
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- * E-mail: (MO); (KL-T); (JRSM)
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Sjöberg M, Magnuson A, Björk J, Benoni C, Almer S, Friis-Liby I, Hertervig E, Olsson M, Karlén P, Eriksson A, Midhagen G, Carlson M, Lapidus A, Halfvarson J, Tysk C. Infliximab as rescue therapy in hospitalised patients with steroid-refractory acute ulcerative colitis: a long-term follow-up of 211 Swedish patients. Aliment Pharmacol Ther 2013; 38:377-87. [PMID: 23799948 DOI: 10.1111/apt.12387] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 05/15/2013] [Accepted: 06/05/2013] [Indexed: 12/19/2022]
Abstract
BACKGROUND Rescue therapy with infliximab (IFX) has been proven effective in a steroid-refractory attack of ulcerative colitis (UC). The long-term efficacy is not well described. AIM To present a retrospective study of IFX as rescue therapy in UC. Primary end points were colectomy-free survival at 3 and 12 months. METHODS In this multicentre study, 211 adult patients hospitalised between 1999 and 2010 received IFX 5 mg/kg as rescue therapy due to a steroid-refractory, moderate-to-severe attack of UC. Exclusion criteria were duration of current flare for >12 weeks, corticosteroid treatment for >8 weeks before hospitalisation, previous IFX therapy or Crohn's disease. RESULTS Probability of colectomy-free survival at 3 months was 0.71 (95% CI, 0.64-0.77), at 12 months 0.64 (95% CI, 0.57-0.70), at 3 years 0.59 (95% CI, 0.52-0.66) and at 5 years 0.53 (95% CI, 0.44-0.61). Steroid-free, clinical remission was achieved in 105/211 (50%) and 112/209 (54%) patients at 3 and 12 months respectively. Of 75 colectomies during the first year, 48 (64%) were carried out during the first 14 days, 13 (17%) on days 15-90 and 14 (19%) between 3 and 12 months. There were three (1.4%) deaths during the first 3 months. CONCLUSIONS Infliximab is an effective rescue treatment, both short- and long-term, in a steroid-refractory attack of UC. Most IFX failures underwent surgery during the first 14 days, which calls for studies on how to optimise induction treatment with IFX. Serious complications, including mortality, were rare.
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Affiliation(s)
- M Sjöberg
- School of Health and Medical Sciences, Örebro University, Örebro, Sweden
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Hugle B, Olsson M, Fischer N, Herrmann M, Lindblad-Toh K, Haas JP. SAT0433 Hyaluronic Acid is a Marker of Active Arthritis, but not Systemic Inflammation in Systemic Juvenile Idiopathic Arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2157] [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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Tengvall K, Kierczak M, Bergvall K, Olsson M, Frankowiack M, Farias FHG, Pielberg G, Carlborg Ö, Leeb T, Andersson G, Hammarström L, Hedhammar Å, Lindblad-Toh K. Genome-wide analysis in German shepherd dogs reveals association of a locus on CFA 27 with atopic dermatitis. PLoS Genet 2013; 9:e1003475. [PMID: 23671420 PMCID: PMC3649999 DOI: 10.1371/journal.pgen.1003475] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 03/04/2013] [Indexed: 12/22/2022] Open
Abstract
Humans and dogs are both affected by the allergic skin disease atopic dermatitis (AD), caused by an interaction between genetic and environmental factors. The German shepherd dog (GSD) is a high-risk breed for canine AD (CAD). In this study, we used a Swedish cohort of GSDs as a model for human AD. Serum IgA levels are known to be lower in GSDs compared to other breeds. We detected significantly lower IgA levels in the CAD cases compared to controls (p = 1.1 × 10(-5)) in our study population. We also detected a separation within the GSD cohort, where dogs could be grouped into two different subpopulations. Disease prevalence differed significantly between the subpopulations contributing to population stratification (λ = 1.3), which was successfully corrected for using a mixed model approach. A genome-wide association analysis of CAD was performed (n cases = 91, n controls = 88). IgA levels were included in the model, due to the high correlation between CAD and low IgA levels. In addition, we detected a correlation between IgA levels and the age at the time of sampling (corr = 0.42, p = 3.0 × 10(-9)), thus age was included in the model. A genome-wide significant association was detected on chromosome 27 (praw = 3.1 × 10(-7), pgenome = 0.03). The total associated region was defined as a ~1.5-Mb-long haplotype including eight genes. Through targeted re-sequencing and additional genotyping of a subset of identified SNPs, we defined 11 smaller haplotype blocks within the associated region. Two blocks showed the strongest association to CAD. The ~209-kb region, defined by the two blocks, harbors only the PKP2 gene, encoding Plakophilin 2 expressed in the desmosomes and important for skin structure. Our results may yield further insight into the genetics behind both canine and human AD.
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Affiliation(s)
- Katarina Tengvall
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Marcin Kierczak
- Department of Clinical Sciences, Computational Genetics Section, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Kerstin Bergvall
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Mia Olsson
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Marcel Frankowiack
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Fabiana H. G. Farias
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Gerli Pielberg
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Örjan Carlborg
- Department of Clinical Sciences, Computational Genetics Section, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Tosso Leeb
- Institute of Genetics, University of Bern, Bern, Switzerland
| | - Göran Andersson
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Lennart Hammarström
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Åke Hedhammar
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Kerstin Lindblad-Toh
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
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Lind M, Olsson M, Rosengren A, Svensson AM, Bounias I, Gudbjörnsdottir S. The relationship between glycaemic control and heart failure in 83,021 patients with type 2 diabetes. Diabetologia 2012; 55:2946-53. [PMID: 22895807 DOI: 10.1007/s00125-012-2681-3] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Accepted: 06/29/2012] [Indexed: 12/24/2022]
Abstract
AIMS/HYPOTHESIS The aim of this study was to examine the relationship between glycaemic control and hospitalisation for heart failure in patients with type 2 diabetes. METHODS Patients included in the Swedish National Diabetes Register (NDR) during 1998-2003 were followed until hospitalisation for heart failure, death or 31 December 2009. Unadjusted and adjusted incidence rates for heart failure were estimated by Poisson regression and relative risk was estimated by Cox regression. RESULTS In 83,021 patients with type 2 diabetes, 10,969 (13.2%) were hospitalised with a primary or secondary diagnosis of heart failure during a mean follow-up of 7.2 years. The incidence increased by male sex (p < 0.001), older age (p < 0.001) and longer diabetes duration (p < 0.001). In Cox regression adjusting for risk factors of heart failure the HR per each percentage unit higher HbA(1c) (10 mmol/mol) for heart-failure hospitalisation was 1.12 (95% CI 1.10, 1.14). By category of HbA(1c) the HR for heart failure hospitalisation was: HbA(1c) 6.0 to <7.0% (42 to <53 mmol/mol), 0.91 (95% CI 0.84, 0.98); HbA(1c) 7.0 to <8.0% (53 to <64 mmol/mol), 0.99 (95% CI 0.91, 1.07); HbA(1c) 8.0 to <9.0% (64 to < 75 mmol/mol), 1.10 (95% CI 1.01, 1.20); HbA(1c) 9.0 to <10.0% (75 to <86 mmol/mol), 1.27 (95% CI 1.15, 1.41); HbA(1c) ≥ 10.0 % (≥ 86 mmol/mol), 1.71 (1.51, 1.93) (reference HbA(1c) <6% [42 mmol/mol]). The HR for patients with HbA(1c) 7.0 to <8.0% (53 to < 64 mmol/mol) compared with patients with HbA(1c) 6.0 to <7.0% (42 to <53 mmol/mol) was 1.09 (95% CI 1.03, 1.14). CONCLUSIONS/INTERPRETATION Poor glycaemic control (HbA(1c) >7% [53 mmol/mol]) is associated with an increased risk of hospitalisation for heart failure in patients with type 2 diabetes.
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Affiliation(s)
- M Lind
- Department of Medicine, Uddevalla Hospital, 451 80 Uddevalla, Sweden.
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Nilsson MI, Olsson M, Wennman-Larsen A, Petersson LM, Alexanderson K. Women's reflections and actions regarding working after breast cancer surgery - a focus group study. Psychooncology 2012; 22:1639-44. [PMID: 22996725 DOI: 10.1002/pon.3192] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [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: 05/26/2011] [Revised: 08/24/2012] [Accepted: 08/30/2012] [Indexed: 11/10/2022]
Abstract
BACKGROUND To better understand processes affecting return to work (RTW) after breast cancer, more knowledge from the perspective of sickness absentees is warranted. Still, research based on women's own reasoning and actions in RTW is very scarce. This study aims to elucidate how women with breast cancer reflect and act on work-related issues. MATERIAL AND METHODS Thematic analyses of data from four focus group interviews with 23 women who had had breast cancer surgery in the previous 3-13 months were carried out. RESULTS The five following themes of reflections regarding RTW were identified: 'health and functioning', 'self-esteem/integrity', 'value of work', 'relationships at work', and 'social circumstances'. These reflections were associated with the three identified themes of actions taken by the women: 'to work or to be sickness absent', 'to adjust work according to own needs or not', and 'to disclose or to hide one's cancer'. There was a distinct difference between women who experienced work as a source of well-being and those who needed a respite from work. CONCLUSION This study adds knowledge to the process of RTW after breast cancer and focuses on factors that lead the women to an active role in this process. We point to the interplay between women's own preferences, perceived competence, outer opportunities, and the actions each woman take with regard to RTW, which need to be recognized by all stakeholders involved. Furthermore, it continues to be essential to address the specific issue of disclosure in the workplace because this may be distressing for women.
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Affiliation(s)
- M I Nilsson
- Division of Insurance Medicine, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
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Anderson UD, Hansson SR, Åkerström B, Olsson M. OS089. Elevated levels of the heme scavenger alpha-1-microglobulin in maternal plasma at the end of first trimester in patients who subsequently develop preeclampsia. Pregnancy Hypertens 2012; 2:226-7. [PMID: 26105302 DOI: 10.1016/j.preghy.2012.04.090] [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: 11/28/2022]
Abstract
INTRODUCTION Resent research has revealed an increased concentration of free fetal hemoglobin (HbF) in maternal serum from patients who subsequently develops preeclampsia (PE). In a previous study of 96 patients we have shown that HbF in combination with the heme-scavenger alpha-1-microglobulin (A1M) are potential predictive biomarkers of PE. OBJECTIVES In this validating case-control study we aimed to confirm the previous findings, that A1M is elevated in the maternal circulation at the end of first trimester in patients who subsequently develops PE. In this study A1M was measured in plasma instead of serum. METHODS Patients were recruited from an ongoing prospective study of new biomarkers to predict and diagnose PE. In total we included 84 patients. 8 patients subsequently developed PE, 4 developed pregnancy induced hypertension (PIH) and 72 were controls with uncomplicated pregnancies. The plasma samples were all taken at 7+0-18+0 weeks of gestation (mean 12+1) and analyzed for concentrations of A1M with Radioimmuno Assay (RIA). This method has been previously described in details. Statistics was performed using one-way ANOVA. RESULTS The mean plasma concentration of A1M in the PE group was 8.6mg/ml, 6.0 in the PIH group and 7.1mg/ml in the controls group. The PE group differed significantly from the controls group (p=0.004), whereas the PIH group did not differ significantly from the controls. CONCLUSION Our findings in plasma confirm previous findings described for serum, i.e. A1M is significantly increased in in first trimester maternal plasma in patients who subsequently develops PE. Since A1M is the most efficient heme scavenger we suggest that A1M may be a physiological defense mechanism against the elevated levels of free HbF found in patients who subsequently develops PE or in patients with manifest PE. Furthermore, A1M did not increase in patients who develops PIH later in their pregnancies indicating its specificity for PE.
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Affiliation(s)
| | - S R Hansson
- Obstetrics and Gynecology, University Hospital of Malmö, Malmö, Sweden
| | - B Åkerström
- Division of Infection Medicine, Lund University, Lund, Sweden
| | - M Olsson
- Division of Infection Medicine, Lund University, Lund, Sweden
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Mohamad K, Olsson M, Andersson G, Purwantara B, van Tol HTA, Rodriguez-Martinez H, Colenbrander B, Lenstra JA. The origin of Indonesian cattle and conservation genetics of the Bali cattle breed. Reprod Domest Anim 2012; 47 Suppl 1:18-20. [PMID: 22212207 DOI: 10.1111/j.1439-0531.2011.01960.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Both Bos indicus (zebu) and Bos javanicus (banteng) contribute to the Indonesian indigenous livestock, which is supposedly of a mixed species origin, not by direct breeding but by secondary cross-breeding. Here, the analysis of mitochondrial, Y-chromosomal and microsatellite DNA showed banteng introgression of 10-16% in Indonesian zebu breeds with East-Javanese Madura and Galekan cattle having higher levels of autosomal banteng introgression (20-30%) and combine a zebu paternal lineage with a predominant (Madura) or even complete (Galekan) maternal banteng origin. Two Madura bulls carried taurine Y-chromosomal haplotypes, presumably of French Limousin origin. There was no evidence for zebu introgression in five populations of the Bali cattle, a domestic form of the banteng.
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Affiliation(s)
- K Mohamad
- Faculty of Veterinary Medicine, Bogor Agricultural University, Bogor, Indonesia
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Abstract
Evasion of apoptosis is considered to be one of the hallmarks of human cancers. This cell death modality is executed by caspases and several upstream regulatory factors, which direct their proteolytic activity, have been defined as either tumor suppressors or oncogenes. Often these regulatory factors, in addition to being potent apoptosis inducers, function in cell survival or repair signaling pathways in response to cellular stress. Thus, loss of function in a distinct regulatory mechanism does not necessarily mean that tumor formation is due to apoptosis malfunction resulting from insufficient caspase activation. Although each caspase has been assigned a distinct role in apoptosis, some redundancy with respect to their regulatory functions and substrate recognition is evident. Jointly, these proteases could be considered to possess solid tumor suppressor function, but what is the evidence that deregulation of specific caspases per se induces inappropriate cell survival, leading to enhanced tumorigenic potential? This question will be addressed in this review, which covers basic molecular mechanisms derived from in vitro analyses and emphasizes new insights that have emerged from in vivo and clinical studies.
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Affiliation(s)
- M Olsson
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 171 77 Stockholm, Sweden
| | - B Zhivotovsky
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 171 77 Stockholm, Sweden
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Abstract
Hox genes are recognized for their explanatory power of bilateral development. However, relatively little is known about natural variation in, and the evolutionary dynamics of, Hox genes within wild populations. Utilizing a natural population of sand lizards (Lacerta agilis), we screened HoxA13 for genetic variation and an association with incidence of offspring malformations. We found significant effects of parental genetic similarity and offspring sex, and their interaction, on risk of hatching malformed as an offspring. We also found within population genetic variation in HoxA13, and identified a significant effect of a three-way interaction among Hox genotype, parental genetic similarity, and offspring sex on the risk of hatching malformation. Since malformed offspring in this population do not survive to maturity, this study reveals complex and ongoing selection associated with Hox genes in a wild reptile population. Importantly, this demonstrates the utility of natural populations in unveiling microevolutionary processes shaping variation in highly conserved genes.
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Affiliation(s)
- T S Schwartz
- School of Biological Sciences, University of Wollongong, Wollongong, NSW, Australia.
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Abstract
BACKGROUND Allergy to laboratory animals is a well-known occupational hazard. The aim was to investigate the frequency of allergic sensitization and respiratory symptoms among pet shop staff and to document their work environment. METHODS Subjects (n = 59) from 24 pet shops were investigated with a questionnaire and lung function tests and skin prick tests against a panel of common inhalant and pet shop allergens. Blood samples were taken for immunoglobulin E (IgE) and IgE antibodies against Phadiatop and specific pet shop allergens. Personal airborne rodent allergen (n = 40) and endotoxin exposure (n = 40) was measured during work. Airborne rodent allergens were also collected using petri dishes at work (n = 40) and at home (n = 45). RESULTS Fifty-three percent reported nasal symptoms, 34% eye symptoms, and 22% had experienced symptoms indicating asthma. However, only four workers (7%) were previously diagnosed with asthma. One-third reported respiratory symptoms at work, mostly against rodents, birds, insects, and hay, and 29% were sensitized to work-related allergens, mainly rodents and fodder insects, e.g., Zophobas. Atopy and total IgE > 100 kU/l increased prevalence of pet shop sensitization [prevalence ratio (PR) 17 and 5.5, respectively], and atopy increased work-related symptoms (PR 3.2). Endotoxin levels were similar between shops with and without rodents. Exposure to animals outside of work was extensive. CONCLUSIONS A third of the pet shop workers reported airway symptoms at work or were sensitized, sometimes to unusual pet shop allergens, especially among atopics. The findings stress the importance of improving the knowledge of health risks and allergen avoidance measures among pet shop staff.
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Affiliation(s)
- A Renström
- National Institute of Environmental Medicine, Lung and Allergy Research, Karolinska Institutet, Stockholm, Sweden.
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Olaya-Contreras P, Styf J, Olsson M, Kaigle-Holm A, Hansson T. P2-462 The influence of distress on disability, physical activity and pain intensity after 7 days of acute severe low back pain. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976l.90] [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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