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Mohn SF, Reimer R, Mar N, Katelieva A, Paquette V, Albert AYK, Roberts A, Tilley P, McClymont E, Ting J, Boucoiran I, Elwood C. Empiric antibiotics for peripartum bacteremia: A chart review from a quaternary Canadian centre. Int J Gynaecol Obstet 2024; 164:786-792. [PMID: 37658607 DOI: 10.1002/ijgo.15048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 07/18/2023] [Accepted: 08/01/2023] [Indexed: 09/03/2023]
Abstract
OBJECTIVE To evaluate the effectiveness of empiric antibiotic protocols for peripartum bacteremia at a quaternary institution by describing incidence, microbial epidemiology, clinical source of infection, susceptibility patterns, and maternal and neonatal outcomes. METHODS Retrospective chart review of peripartum patients with positive blood cultures between 2010 and 2018. RESULTS The incidence of peripartum bacteremia was 0.3%. The most cultured organisms were Escherichia coli (51, 26.7%), Streptococcus spp. (52, 27.2%), and anaerobic spp. (35, 18.3%). Of the E. coli cases, 54.9% (28), 19.6% (10), and 19.6% (10) were resistant to ampicillin, first- and third-generation cephalosporins, respectively. Clinical sources of infection included intra-amniotic infection/endometritis (115, 67.6%), upper and/or lower urinary tract infection (23, 13.5%), and soft tissue infection (8, 4.7%). Appropriate empiric antibiotics were prescribed in 137 (83.0%) cases. There were 7 ICU admissions (4.2%), 18 pregnancy losses (9.9%), 9 neonatal deaths (5.5%), and 6 cases of neonatal bacteremia (3.7%). CONCLUSION Peripartum bacteremia remains uncommon but associated with maternal morbidity and neonatal morbidity and mortality. Current empiric antimicrobial protocols at our site remain appropriate, but continuous monitoring of antimicrobial resistance patterns is critical given the presence of pathogens resistant to first-line antibiotics.
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Affiliation(s)
- Sarah F Mohn
- UBC Faculty of Medicine, Vancouver, British Columbia, Canada
| | - Renee Reimer
- UBC Faculty of Medicine, Vancouver, British Columbia, Canada
| | - Nicole Mar
- UBC Faculty of Medicine, Vancouver, British Columbia, Canada
| | | | - Vanessa Paquette
- BC Women's Hospital and Health Centre, Vancouver, British Columbia, Canada
| | | | - Ashley Roberts
- BC Children's Hospital Research Institute, Vancouver, British Columbia, Canada
| | - Peter Tilley
- BC Children's Hospital Research Institute, Vancouver, British Columbia, Canada
| | - Elisabeth McClymont
- Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Joseph Ting
- UBC Faculty of Medicine, Vancouver, British Columbia, Canada
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Isabelle Boucoiran
- Mother and Child Infectious Disease Centre, CHU Sainte, Justine, Montreal, Quebec, Canada
- Department of Obstetrics and Gynecology and School of Public Health, Université de Montréal, Montreal, Quebec, Canada
| | - Chelsea Elwood
- UBC Faculty of Medicine, Vancouver, British Columbia, Canada
- Women's Health Research Institute, Vancouver, British Columbia, Canada
- Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, British Columbia, Canada
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2
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Dos Santos SJ, Pakzad Z, Albert AYK, Elwood CN, Grabowska K, Links MG, Hutcheon JA, Maan EJ, Manges AR, Dumonceaux TJ, Hodgson ZG, Lyons J, Mitchell-Foster SM, Gantt S, Joseph K, Van Schalkwyk JE, Hill JE, Money DM. Maternal vaginal microbiome composition does not affect development of the infant gut microbiome in early life. Front Cell Infect Microbiol 2023; 13:1144254. [PMID: 37065202 PMCID: PMC10097898 DOI: 10.3389/fcimb.2023.1144254] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 03/07/2023] [Indexed: 04/01/2023] Open
Abstract
Birth mode has been implicated as a major factor influencing neonatal gut microbiome development, and it has been assumed that lack of exposure to the maternal vaginal microbiome is responsible for gut dysbiosis among caesarean-delivered infants. Consequently, practices to correct dysbiotic gut microbiomes, such as vaginal seeding, have arisen while the effect of the maternal vaginal microbiome on that of the infant gut remains unknown. We conducted a longitudinal, prospective cohort study of 621 Canadian pregnant women and their newborn infants and collected pre-delivery maternal vaginal swabs and infant stool samples at 10-days and 3-months of life. Using cpn60-based amplicon sequencing, we defined vaginal and stool microbiome profiles and evaluated the effect of maternal vaginal microbiome composition and various clinical variables on the development of the infant stool microbiome. Infant stool microbiomes showed significant differences in composition by delivery mode at 10-days postpartum; however, this effect could not be explained by maternal vaginal microbiome composition and was vastly reduced by 3 months. Vaginal microbiome clusters were distributed across infant stool clusters in proportion to their frequency in the overall maternal population, indicating independence of the two communities. Intrapartum antibiotic administration was identified as a confounder of infant stool microbiome differences and was associated with lower abundances of Escherichia coli, Bacteroides vulgatus, Bifidobacterium longum and Parabacteroides distasonis. Our findings demonstrate that maternal vaginal microbiome composition at delivery does not affect infant stool microbiome composition and development, suggesting that practices to amend infant stool microbiome composition focus factors other than maternal vaginal microbes.
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Affiliation(s)
- Scott J. Dos Santos
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Zahra Pakzad
- Department of Microbiology and Immunology, Faculty of Science, University of British Columbia, Vancouver, BC, Canada
- Women’s Health Research Institute, B.C. Women's Hopsital, Vancouver, BC, Canada
| | | | - Chelsea N. Elwood
- Women’s Health Research Institute, B.C. Women's Hopsital, Vancouver, BC, Canada
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Kirsten Grabowska
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Matthew G. Links
- Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, SK, Canada
- Department of Computer Science, University of Saskatchewan, Saskatoon, SK, Canada
| | - Jennifer A. Hutcheon
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Evelyn J. Maan
- Women’s Health Research Institute, B.C. Women's Hopsital, Vancouver, BC, Canada
| | - Amee R. Manges
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada
- British Columbia Centre for Disease Control, Vancouver, BC, Canada
| | | | - Zoë G. Hodgson
- Midwifery Program, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Janet Lyons
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Sheona M. Mitchell-Foster
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Soren Gantt
- Centre de Recherche du CHU Sainte-Justine, Montréal, QC, Canada
| | - K.S. Joseph
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Julie E. Van Schalkwyk
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Janet E. Hill
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
- *Correspondence: Deborah M. Money, ; Janet E. Hill,
| | - Deborah M. Money
- Department of Microbiology and Immunology, Faculty of Science, University of British Columbia, Vancouver, BC, Canada
- Women’s Health Research Institute, B.C. Women's Hopsital, Vancouver, BC, Canada
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- *Correspondence: Deborah M. Money, ; Janet E. Hill,
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3
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Renner RM, Hu V, Guilbert ÉR, Albert AYK, White KO, Jones HE, Guan X, Norman WV. First-trimester surgical abortion practice in Canada in 2012. Can Fam Physician 2023; 69:36-44. [PMID: 36693753 PMCID: PMC9873287 DOI: 10.46747/cfp.690136] [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] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To evaluate practices among first-trimester surgical abortion facilities and providers in Canada in 2012 and examine the characteristics of the surgical abortion work force. DESIGN Self-administered paper or electronic survey adapted from a survey previously fielded in the United States. SETTING Canada. PARTICIPANTS Facility administrators and physicians. MAIN OUTCOMES MEASURES Descriptive statistics on reported first-trimester surgical abortion practice and provider demographic characteristics. RESULTS Eighty-three percent of identified facilities (78 of 94) and 178 physicians responded. Of the respondents, 99% of facilities and 96% of physicians provided first-trimester surgical abortions. Responding facilities provided 68,154 first-trimester surgical abortions in 2012. This represented 96% of their reported total (combined medical and surgical) first-trimester abortions. More than half (55%) of responding facilities were community based, while 45% were hospital affiliated. Most physician providers were female (68%) and were family doctors (59%). Preoperatively, 96% of physicians routinely used ultrasound and 89% gave perioperative antibiotics. Almost half (48%) used manual vacuum aspiration, but less than 35% did so beyond 9 weeks after the last menstrual period. At most facilities, most procedures were performed under combined local anesthesia and intravenous sedation (73%); only 7% indicated deep sedation or general anesthesia were used exclusively. Postoperatively, 81% of physicians performed immediate tissue examination and 96% offered postabortion contraception on the same day as the abortion. Other assessed outcomes included medication regimens and cervical preparation, with a high degree of consistency among facilities and physicians. CONCLUSION First-trimester surgical abortion providers are mostly family physicians and most are female. Practices across Canada were mostly uniform and followed evidence-based guidelines. Uptake of the most recent Canadian practice guidelines may help further standardize patient care and improve routine perioperative antibiotic use and immediate tissue examination.
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Affiliation(s)
- Regina-Maria Renner
- Clinical Associate Professor of Obstetrics and Gynaecology at the University of British Columbia in Vancouver and a co-investigator in the Contraception and Abortion Research Team in the Women’s Health Research Institute at BC Women’s Hospital and Health Centre
| | - Vivien Hu
- Medical student in the Faculty of Medicine at the University of British Columbia and a research assistant in the Contraception and Abortion Research Team in the Women's Health Research Institute at the time of the study
| | - Édith R Guilbert
- Senior Medical Adviser in the Direction des individus et des communautés at the Institut national de santé publique du Québec in Québec, QC, and Outgoing Director of the Contraception and Abortion Research Team in the Women's Health Research Institute
| | - Arianne Y K Albert
- Biostatistician in the Contraception and Abortion Research Team in the Women's Health Research Institute
| | - Katharine O'Connell White
- Vice Chair of Academics, Associate Director of the Complex Family Planning Fellowship, and Director of BEACON Research at Boston Medical Center in Massachusetts
| | - Heidi E Jones
- Assistant Professor in the School of Public Health at City University of New York in New York, NY
| | - Xiaoning Guan
- Medical student in the Faculty of Medicine at the University of British Columbia and a research assistant in the Contraception and Abortion Research Team in the Women's Health Research Institute at the time of the study
| | - Wendy V Norman
- Family physician researcher, Professor, and Director of the Clinician Scholar Program in the Department of Family Practice at the University of British Columbia, Honorary Associate Professor in the Faculty of Public Health and Policy at the London School of Hygiene and Tropical Medicine in the United Kingdom, and Co-Director of the Contraception and Abortion Research Team in the Women's Health Research Institute.
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4
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Thompson KA, Peichel CL, Rennison DJ, McGee MD, Albert AYK, Vines TH, Greenwood AK, Wark AR, Brandvain Y, Schumer M, Schluter D. Analysis of ancestry heterozygosity suggests that hybrid incompatibilities in threespine stickleback are environment dependent. PLoS Biol 2022; 20:e3001469. [PMID: 35007278 PMCID: PMC8746713 DOI: 10.1371/journal.pbio.3001469] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 11/04/2021] [Indexed: 12/25/2022] Open
Abstract
Hybrid incompatibilities occur when interactions between opposite ancestry alleles at different loci reduce the fitness of hybrids. Most work on incompatibilities has focused on those that are "intrinsic," meaning they affect viability and sterility in the laboratory. Theory predicts that ecological selection can also underlie hybrid incompatibilities, but tests of this hypothesis using sequence data are scarce. In this article, we compiled genetic data for F2 hybrid crosses between divergent populations of threespine stickleback fish (Gasterosteus aculeatus L.) that were born and raised in either the field (seminatural experimental ponds) or the laboratory (aquaria). Because selection against incompatibilities results in elevated ancestry heterozygosity, we tested the prediction that ancestry heterozygosity will be higher in pond-raised fish compared to those raised in aquaria. We found that ancestry heterozygosity was elevated by approximately 3% in crosses raised in ponds compared to those raised in aquaria. Additional analyses support a phenotypic basis for incompatibility and suggest that environment-specific single-locus heterozygote advantage is not the cause of selection on ancestry heterozygosity. Our study provides evidence that, in stickleback, a coarse-albeit indirect-signal of environment-dependent hybrid incompatibility is reliably detectable and suggests that extrinsic incompatibilities can evolve before intrinsic incompatibilities.
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Affiliation(s)
- Ken A. Thompson
- Department of Zoology & Biodiversity Research Centre, University of British Columbia, Canada
| | - Catherine L. Peichel
- Division of Evolutionary Ecology, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland
| | - Diana J. Rennison
- Division of Biological Sciences, University of California San Diego, San Diego, California, United States of America
| | - Matthew D. McGee
- School of Biological Sciences, Monash University, Melbourne, Victoria, Australia
| | | | - Timothy H. Vines
- DataSeer Research Data Services, Vancouver, British Columbia, Canada
| | | | - Abigail R. Wark
- Harvard Medical School, Cambridge, Massachusetts, United States of America
| | - Yaniv Brandvain
- Department of Plant and Microbial Biology, University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Molly Schumer
- Department of Biology, Stanford University, Stanford, California, United States of America
- Howard Hughes Medical Institute, Maryland, United States of America
| | - Dolph Schluter
- Department of Zoology & Biodiversity Research Centre, University of British Columbia, Canada
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5
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Fairbrother N, Collardeau F, Albert AYK, Challacombe FL, Thordarson DS, Woody SR, Janssen PA. High Prevalence and Incidence of Obsessive-Compulsive Disorder Among Women Across Pregnancy and the Postpartum. J Clin Psychiatry 2021; 82. [PMID: 34033273 DOI: 10.4088/jcp.20m13398] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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] [Indexed: 10/21/2022]
Abstract
Objective: During the perinatal period, women are at an increased risk for the onset/exacerbation of obsessive-compulsive disorder (OCD) and may experience perinatal-specific obsessions and/or compulsions. Past research has provided preliminary findings regarding the prevalence of OCD in the perinatal period but has often reported limited metrics and ignored perinatal specific symptoms. This research aimed to assess the prevalence and incidence of maternal OCD between the third trimester in pregnancy and 6 months postpartum. Methods: An unselected sample of 763 English-speaking pregnant women and new mothers participated in a longitudinal, province-wide study between their third trimester in pregnancy and 9 months postpartum. They completed 3 online questionnaires and interviews (data collected between February 9, 2014, and February 14, 2017) and were administered a diagnostic interview to determine OCD status based on DSM-5 diagnostic criteria. Results: A weighted prenatal period prevalence of 7.8% and a postpartum period prevalence of 16.9% were found. The average, prenatal, point prevalence estimate was 2.9%, and the average, postpartum, point prevalence estimate was 7.0%. Point prevalence gradually increased over the course of pregnancy and the early postpartum, attaining a peak of close to 9% at approximately 8 weeks postpartum, with a gradual decline thereafter. The cumulative incidence of new OCD diagnoses was estimated at 9% by 6 months postpartum. Conclusions: Our study suggests that when women are encouraged to report their perinatal-specific symptoms, and current diagnostic criteria are applied, estimates for perinatal OCD may be higher than previously believed.
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Affiliation(s)
- Nichole Fairbrother
- Department of Psychiatry/Island Medical Program, University of British Columbia, Victoria, Canada.,Corresponding author: Nichole Fairbrother, PhD, Room 002, Pearkes Bldg, Queen Alexandra Centre for Children's Health, 2400 Arbutus Rd, Victoria, BC V8N 1V7, Canada
| | - Fanie Collardeau
- Department of Psychology, University of Victoria, Victoria, Canada
| | - Arianne Y K Albert
- Women's Health Research Institute, BC Women's Hospital & Health Centre, Vancouver, Canada
| | - Fiona L Challacombe
- Department of Health Service and Population Research, King's College London, London, United Kingdom
| | - Dana S Thordarson
- Department of Family Practice, University of British Columbia, Vancouver, Canada
| | - Sheila R Woody
- Department of Psychology, University of British Columbia, Vancouver, Canada
| | - Patricia A Janssen
- School of Population and Public Health, University of British Columbia, Vancouver, Canada
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6
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Christians JK, Shergill HK, Albert AYK. Sex-dependent effects of prenatal food and protein restriction on offspring physiology in rats and mice: systematic review and meta-analyses. Biol Sex Differ 2021; 12:21. [PMID: 33563335 PMCID: PMC7871651 DOI: 10.1186/s13293-021-00365-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 09/10/2020] [Accepted: 01/31/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Males and females may experience different effects of early-life adversity on life-long health. One hypothesis is that male foetuses invest more in foetal growth and relatively less in placental growth, and that this makes them susceptible to poor nutrition in utero, particularly if nutrition is reduced part-way through gestation. OBJECTIVES Our objectives were to examine whether (1) food and/ or protein restriction in rats and mice has consistent sex-dependent effects, (2) sex-dependency differs between types of outcomes, and (3) males are more severely affected when restriction starts part-way through gestation. DATA SOURCES PubMed and Web of Science were searched to identify eligible studies. STUDY ELIGIBILITY CRITERIA Eligible studies described controlled experiments that restricted protein or food during gestation in rats or mice, examined physiological traits in offspring from manipulated pregnancies, and tested whether effects differed between males and females. RESULTS Our search identified 292 articles, of which the full texts of 72 were assessed, and 65 were included for further synthesis. A majority (50) used Wistar or Sprague-Dawley rats and so these were the primary focus. Among studies in which maternal diet was restricted for the duration of gestation, no type of trait was consistently more severely affected in one particular sex, although blood pressure was generally increased in both sexes. Meta-analysis found no difference between sexes in the effect of protein restriction throughout gestation on blood pressure. Among studies restricting food in the latter half of gestation only, there were again few consistent sex-dependent effects, although three studies found blood pressure was increased in males only. Meta-analysis found that food restriction in the second half of gestation increased adult blood pressure in both sexes, with a significantly greater effect in males. Birthweight was consistently reduced in both sexes, a result confirmed by meta-analysis. CONCLUSIONS We found little support for the hypotheses that males are more affected by food and protein restriction, or that effects are particularly severe if nutrition is reduced part-way through gestation. However, less than half of the studies tested for sex by maternal diet interactions to identify sex-dependent effects. As a result, many reported sex-specific effects may be false positives.
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Affiliation(s)
- Julian K Christians
- Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada. .,Centre for Cell Biology, Development and Disease, Simon Fraser University, Burnaby, Canada. .,British Columbia Children's Hospital Research Institute, Vancouver, BC, Canada. .,Women's Health Research Institute, BC Women's Hospital and Health Centre, Vancouver, British Columbia, Canada.
| | - Haroop K Shergill
- Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada
| | - Arianne Y K Albert
- Women's Health Research Institute, BC Women's Hospital and Health Centre, Vancouver, British Columbia, Canada
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7
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Ajaykumar A, Zhu M, Kakkar F, Brophy J, Bitnun A, Alimenti A, Soudeyns H, Saberi S, Albert AYK, Money DM, Côté HCF. Elevated Blood Mitochondrial DNA in Early Life Among Uninfected Children Exposed to Human Immunodeficiency Virus and Combination Antiretroviral Therapy in utero. J Infect Dis 2020; 223:621-631. [PMID: 32638023 DOI: 10.1093/infdis/jiaa410] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/03/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Combination antiretroviral therapy (cART) during pregnancy prevents vertical transmission, but many antiretrovirals cross the placenta and several can affect mitochondria. Exposure to maternal human immunodeficiency virus (HIV) and/or cART could have long-term effects on children who are HIV exposed and uninfected (CHEU). Our objective was to compare blood mitochondrial DNA (mtDNA) content in CHEU and children who are HIV unexposed and uninfected (CHUU), at birth and in early life. METHODS Whole-blood mtDNA content at birth and in early life (age 0-3 years) was compared cross-sectionally between CHEU and CHUU. Longitudinal changes in mtDNA content among CHEU was also evaluated. RESULTS At birth, CHEU status and younger gestational age were associated with higher mtDNA content. These remained independently associated with mtDNA content in multivariable analyses, whether considering all infants, or only those born at term. Longitudinally, CHEU mtDNA levels remained unchanged during the first 6 months of life, and gradually declined thereafter. A separate age- and sex-matched cross-sectional analysis (in 214 CHEU and 214 CHUU) illustrates that the difference in mtDNA between the groups remains detectable throughout the first 3 years of life. CONCLUSION The persistently elevated blood mtDNA content observed among CHEU represents a long-term effect, possibly resulting from in utero stresses related to maternal HIV and/or cART. The clinical impact of altered mtDNA levels is unclear.
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Affiliation(s)
- Abhinav Ajaykumar
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada
| | - Mayanne Zhu
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Fatima Kakkar
- Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, Quebec, Canada
| | - Jason Brophy
- Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
| | - Ari Bitnun
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Ariane Alimenti
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada.,BC Women's Hospital and Health Centre, Vancouver, British Columbia, Canada
| | - Hugo Soudeyns
- Unité d'Immunopathologie Virale, Centre de Recherche du CHU Sainte-Justine, Montreal, Quebec, Canada.,Department of Microbiology, Infectiology & Immunology, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Sara Saberi
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada
| | | | - Deborah M Money
- BC Women's Hospital and Health Centre, Vancouver, British Columbia, Canada.,Women's Health Research Institute, Vancouver, British Columbia, Canada.,Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Hélène C F Côté
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada.,Women's Health Research Institute, Vancouver, British Columbia, Canada
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8
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Abrar A, Fairbrother N, Smith AP, Skoll A, Albert AYK. Anxiety among women experiencing medically complicated pregnancy: A systematic review and meta-analysis. Birth 2020; 47:13-20. [PMID: 31222840 DOI: 10.1111/birt.12443] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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] [Received: 02/17/2019] [Revised: 05/22/2019] [Accepted: 05/22/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Symptoms of anxiety are common among pregnant and postpartum women, and 15%-20% of pregnancies are affected by medical complications. Despite this, little is known about the relationship of medical complications in pregnancy and women's experience of anxiety. The purpose of this research was to conduct a systematic review and meta-analysis of differences in anxiety symptom severity among women experiencing a medically complicated versus a medically uncomplicated pregnancy. METHODS This work was guided by the PRISMA reporting process. Electronic databases MEDLINE and PsycINFO were searched to identify studies that met the inclusion criteria. An adaptation of the Newcastle-Ottawa Quality Assessment Scale for case-control studies was used to perform a quality assessment review. A random-effects meta-analysis was used to calculate the estimated average standardized mean differences. RESULTS Based on the five studies which met our inclusion criteria, findings provide evidence of higher levels of anxiety symptoms among pregnant women experiencing a medically complicated versus a medically uncomplicated pregnancy. Despite considerable heterogeneity, all mean difference estimates are in the direction of greater anxiety in the high-risk groups. CONCLUSIONS Women experiencing a medically complex pregnancy report higher levels of anxiety symptoms compared to women experiencing a medically uncomplicated pregnancy.
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Affiliation(s)
- Ambar Abrar
- Social Dimensions of Health Program, The University of Victoria, Victoria, British Columbia, Canada
| | - Nichole Fairbrother
- Department of Psychiatry and Island Medical Program, The University of British Columbia, Vancouver, British Columbia, Canada
| | - André P Smith
- Department of Sociology, The University of Victoria, Victoria, British Columbia, Canada
| | - Amanda Skoll
- Department of Obstetrics and Gynaecology, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Arianne Y K Albert
- Women's Health Research Institute, British Columbia's Women's Hospital and Health Centre and Department of Obstetrics and Gynaecology, The University of British Columbia, Vancouver, British Columbia, Canada
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9
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Abstract
Funding agencies in North America and Europe are recognizing the importance of the integration of sex differences into basic and clinical research. Although these mandates are in place to improve our knowledge of health for both men and women, there have been a number of implementation issues that require vigilance on the part of funders and the research community. Here we discuss issues on simple inclusion of both sexes in studies to specialisation of sex differences with attention paid to statistics and the need for sex-specific treatments. We suggest differing mandates need to be considered regarding simple integration versus the need for studies in the specialisation of sex differences and/or the need for research that recognises the importance of male-specific or female-specific factors that influence subsequent health such as menstruation, menopause or pregnancy.
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Affiliation(s)
- Liisa A M Galea
- Department of Psychology, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC V6T1Z3, Canada.
| | - Elena Choleris
- Department of Psychology and Neuroscience Program, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Arianne Y K Albert
- Women's Health Research Institute of British Columbia, Vancouver, BC, Canada
| | - Margaret M McCarthy
- James and Carolyn Frenkil Dean's Professor and Chair, Dept of Pharmacology, Univ of Maryland School of Medicine, Baltimore, MD, United States
| | - Farida Sohrabji
- Women's Health in Neuroscience Program, Department of Neuroscience and Experimental Therapeutics, Texas A&M HSC College of Medicine, Bryan, TX 77807, United States
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10
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Van Ommen CE, Albert AYK, Piske M, Money DM, Cote HCF, Lima VD, Maan EJ, Alimenti A, van Schalkwyk J, Pick N, Murray MCM. Exploring the live birth rates of women living with HIV in British Columbia, Canada. PLoS One 2019; 14:e0211434. [PMID: 30726263 PMCID: PMC6364910 DOI: 10.1371/journal.pone.0211434] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 01/14/2019] [Indexed: 11/19/2022] Open
Abstract
Objective To evaluate the birth rates of women living with HIV (WLWH) compared to the general population in British Columbia (BC), Canada. Methods We retrospectively reviewed clinical and population level surveillance data from 1997 to 2015. Live birth rates from 1997 to 2015 among WLWH aged 15–49 years were compared with those of all BC women. Next, the number of live births among WLWH with a live birth between 1997–2012 and HIV-negative controls matched 1:3 by geocode were compared. Results WLWH had a lower birth rate compared to all BC women [31.4 (95%CI, 28.6–34.3) vs. 40.0 (39.3–40.1)/1000 person years]. Stratified by age, WLWH aged 15–24 years had a higher birth rate while WLWH aged 25–49 years had a lower birth rate than BC women (p<0.01). Between 1997 and 2015, birth rates for both populations decreased among women aged 15–24 years, and increased among women aged 25–49 years, most strikingly among WLWH 35–49 years (p<0.01). When comparing WLWH with a live birth to HIV-negative geocode matched controls, WLWH aged 15–24 years (p = 0.03) and aged 25–34 years (p<0.01) had more live births than controls while WLWH aged 35–49 years did not (p = 0.06). Conclusions On a population level, WLWH have lower birth rates than the general population. However, this is not observed among WLWH who have ever given birth compared with matched controls, suggesting that sociodemographic factors may play an important role. WLWH are increasingly giving birth in their later reproductive years. Taken together, our data supports the integration of reproductive health and HIV care.
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Affiliation(s)
- Clara E. Van Ommen
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Arianne Y. K. Albert
- Women’s Health Research Institute, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
- Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Micah Piske
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Deborah M. Money
- Women’s Health Research Institute, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
- Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, British Columbia, Canada
- Oak Tree Clinic, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
| | - Hélène C. F. Cote
- Women’s Health Research Institute, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Viviane D. Lima
- British Columbia Centre for Excellence in HIV/AIDS, Vancouver, British Columbia, Canada
- Division of AIDS, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Evelyn J. Maan
- Women’s Health Research Institute, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
- Oak Tree Clinic, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
| | - Ariane Alimenti
- Oak Tree Clinic, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
- Division of Infectious and Immunologic Diseases, Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Julianne van Schalkwyk
- Women’s Health Research Institute, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
- Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, British Columbia, Canada
- Oak Tree Clinic, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
| | - Neora Pick
- Women’s Health Research Institute, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
- Oak Tree Clinic, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
- Division of Infectious Disease, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Melanie C. M. Murray
- Women’s Health Research Institute, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
- Oak Tree Clinic, British Columbia Women’s Hospital, Vancouver, British Columbia, Canada
- Division of Infectious Disease, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- * E-mail:
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11
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Workman M, Albert AYK, Norman WV. Training family physicians as researchers: Outcomes over 15 years for Canada's first clinician scholar program. Can Fam Physician 2019; 65:45-51. [PMID: 30674515 PMCID: PMC6347302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
OBJECTIVE To examine characteristics at admission and subsequent academic achievements among the graduates of the first 15 years of the clinician scholar program (CSP), Canada's longest-running such program, housed at the University of British Columbia in Vancouver. DESIGN Cross-sectional study with data gathered from program files, personal correspondence, and public sources. SETTING Vancouver. PARTICIPANTS Graduates of the University of British Columbia CSP from 2001 to 2015. MAIN OUTCOME MEASURES Characteristics at admission (years since medical school graduation, previous graduate degrees) and measures of scholarly success (peer-reviewed publications, subsequent graduate degrees, and academic faculty appointments). RESULTS We obtained data for all 40 CSP graduates. The median years since medical school graduation at admission to the CSP was 12 years (interquartile range of 8 to 19); 60% of entrants held no previous graduate degree. After CSP completion, 15% of graduates attained an academic faculty appointment and 23% published more than 2 peer-reviewed articles per year. Subsequent success was not diminished with increasing years since medical school graduation, nor was it diminished among those without a previous graduate degree. Clinician scholar program graduates who subsequently completed a graduate degree were significantly more likely (P = .01) to publish frequently. We noted a weak negative relationship between getting a subsequent degree and number of years since medical school graduation (odds ratio of 0.89, 95% CI 0.78 to 0.99, P = .04). CONCLUSION We found family physicians interested in becoming researchers were usually highly experienced, with physicians entering the CSP a median of 12 years (interquartile range 8 to 19 years) after medical school graduation. Most went on to publish several papers and more than 20% maintained a productivity of more than 2 peer-reviewed papers per year. The mentorship program model during this first 15 years has been effective in training family physicians to begin clinician scholar careers, and has been built upon, with the introduction from 2013 to 2015 of an enhanced curriculum. Future quantitative and qualitative analysis of this program and others is important to better articulate the success of clinician scholars striving to understand and improve primary care and health for Canadians.
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Affiliation(s)
- Melissa Workman
- Medical student at the University of British Columbia in Vancouver
| | - Arianne Y K Albert
- Biostatistician in the Women's Health Research Institute at the BC Women's Hospital and Health Centre in Vancouver
| | - Wendy V Norman
- Family physician researcher, Associate Professor, and Director of the Clinician Scholar Program in the Department of Family Practice at the University of British Columbia.
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12
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Kalyan S, Pick N, Mai A, Murray MCM, Kidson K, Chu J, Albert AYK, Côté HCF, Maan EJ, Goshtasebi A, Money DM, Prior JC. Premature Spinal Bone Loss in Women Living with HIV is Associated with Shorter Leukocyte Telomere Length. Int J Environ Res Public Health 2018; 15:ijerph15051018. [PMID: 29783641 PMCID: PMC5982057 DOI: 10.3390/ijerph15051018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 12/14/2022]
Abstract
With advances in combination antiretroviral therapy (cART), people living with HIV are now surviving to experience aging. Evidence suggests that individuals living with HIV are at greater risk for low bone mineral density (BMD), osteoporosis, and fractures. Better understanding of the pathophysiology of bone health in women living with HIV (WLWH) is important for treatment strategies. The goal of this study was to explore new biological factors linked to low BMD in WLWH. Standardized BMD measures of WLWH were compared to reference values from an unselected population of women from the same geographical region of the same age range. Linear regression analysis was used to assess relationships among health-related characteristics, cellular aging (measured by leukocyte telomere length; LTL), cART, and BMD of WLWH. WLWH (n = 73; mean age 43 ± 9 years) had lower BMD Z-scores at the lumbar spine (LS) (mean difference = -0.39, p < 0.001) and total hip (TH) (-0.29, p = 0.012) relative to controls (n = 290). WLWH between 50 and 60 years (n = 17) had lower Z-scores at the LS (p = 0.008) and TH (p = 0.027) compared to controls (n = 167). Among WLWH, LS BMD was significantly associated with LTL (R² = 0.09, p = 0.009) and BMI (R² = 0.06, p = 0.042). Spinal BMD was adversely affected in WLWH. Reduction of LTL was strongly associated with lower BMD and may relate to its pathophysiology and premature aging in WLWH.
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Affiliation(s)
- Shirin Kalyan
- Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9 Canada.
- Division of Endocrinology; Centre for Menstrual Cycle and Ovulation Research, BC Centre for the Canadian Multicentre Osteoporosis Study, University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
| | - Neora Pick
- Oak Tree Clinic, British Columbia Women's Hospital, Vancouver, BC, V6H 3N1, Canada.
- Department of Medicine, Division of Infectious Disease, University of British Columbia, Vancouver, BC V6Z 1Y6, Canada.
- BC Women's Health Research Institute, British Columbia Women's Hospital, Vancouver, BC V6H 3N1, Canada.
| | - Alice Mai
- Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9 Canada.
| | - Melanie C M Murray
- Oak Tree Clinic, British Columbia Women's Hospital, Vancouver, BC, V6H 3N1, Canada.
- Department of Medicine, Division of Infectious Disease, University of British Columbia, Vancouver, BC V6Z 1Y6, Canada.
- BC Women's Health Research Institute, British Columbia Women's Hospital, Vancouver, BC V6H 3N1, Canada.
| | - Kristen Kidson
- Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9 Canada.
| | - Jackson Chu
- Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9 Canada.
| | - Arianne Y K Albert
- BC Women's Health Research Institute, British Columbia Women's Hospital, Vancouver, BC V6H 3N1, Canada.
| | - Hélène C F Côté
- BC Women's Health Research Institute, British Columbia Women's Hospital, Vancouver, BC V6H 3N1, Canada.
- Department of Pathology & Laboratory Medicine, University of British Columbia, Vancouver, BC V6T 2B5, Canada.
| | - Evelyn J Maan
- Oak Tree Clinic, British Columbia Women's Hospital, Vancouver, BC, V6H 3N1, Canada.
| | - Azita Goshtasebi
- Division of Endocrinology; Centre for Menstrual Cycle and Ovulation Research, BC Centre for the Canadian Multicentre Osteoporosis Study, University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
| | - Deborah M Money
- Oak Tree Clinic, British Columbia Women's Hospital, Vancouver, BC, V6H 3N1, Canada.
- BC Women's Health Research Institute, British Columbia Women's Hospital, Vancouver, BC V6H 3N1, Canada.
- Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, BC V6Z 2K8, Canada.
| | - Jerilynn C Prior
- Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9 Canada.
- Division of Endocrinology; Centre for Menstrual Cycle and Ovulation Research, BC Centre for the Canadian Multicentre Osteoporosis Study, University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
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13
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Ajaykumar A, Soudeyns H, Kakkar F, Brophy J, Bitnun A, Alimenti A, Albert AYK, Money DM, Côté HCF. Leukocyte Telomere Length at Birth and During the Early Life of Children Exposed to but Uninfected With HIV After In Utero Exposure to Antiretrovirals. J Infect Dis 2018; 217:710-720. [PMID: 29228317 PMCID: PMC5853286 DOI: 10.1093/infdis/jix618] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 12/04/2017] [Indexed: 12/20/2022] Open
Abstract
Background Maternal combination antiretroviral therapy (cART) during pregnancy could impact the health of human immunodeficiency virus (HIV)-exposed, HIV-uninfected (HEU) children, because some antiretrovirals cross the placenta and can inhibit telomerase. Our objective was to compare leukocyte telomere length (LTL) in HEU children and HIV-unexposed, HIV-uninfected (HUU) children at birth and in early life and to investigate any relationship with cART exposure. Methods HEU and HUU children's blood LTL was compared cross-sectionally at birth, and during the first three years of life. Longitudinal HEU LTL dynamics was evaluated over that same period. Results At birth, the LTL in HEU children (n = 114) was not shorter than that in HUU children (n = 86), but female infants had longer LTL than male infants. Maternal cART (duration or type) showed no association with shorter infant LTL. Among 214 HEU children age- and sex-matched at a 1:1 ratio to HUU children, LTL declined similarly in both groups. In a longitudinal analysis, LTL attrition in HEU children was rapid from birth to 1 year of age and gradual thereafter. Zidovudine prophylaxis did not significantly alter LTL. Conclusions Our results indicate that from birth to 3 years of age, the LTL in HEU children is not negatively affected by exposure to maternal HIV infection and cART, at least not to the regimens used within this Canadian cohort, a reassuring finding.
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Affiliation(s)
- Abhinav Ajaykumar
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
- Centre for Blood Research, University of British Columbia, Vancouver, Canada
| | - Hugo Soudeyns
- Unité d’immunopathologie virale, Centre de Recherche du CHU Sainte-Justine, Montreal, Canada
- Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université de Montréal, Montreal, Canada
| | - Fatima Kakkar
- Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, Canada
| | - Jason Brophy
- Department of Pediatrics, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Canada
| | - Ari Bitnun
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Ariane Alimenti
- Department of Pediatrics, University of British Columbia, Vancouver, Canada
- BC Women’s Hospital and Health Centre, Vancouver, Canada
| | - Arianne Y K Albert
- BC Women’s Hospital and Health Centre, Vancouver, Canada
- Women’s Health Research Institute, Vancouver, Canada
| | - Deborah M Money
- Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, Canada
- BC Women’s Hospital and Health Centre, Vancouver, Canada
- Women’s Health Research Institute, Vancouver, Canada
| | - Hélène C F Côté
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
- Centre for Blood Research, University of British Columbia, Vancouver, Canada
- Women’s Health Research Institute, Vancouver, Canada
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14
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Hippman C, Moshrefzadeh A, Lohn Z, Hodgson ZG, Dewar K, Lam M, Albert AYK, Kwong J. Breast Cancer and Mammography Screening: Knowledge, Beliefs and Predictors for Asian Immigrant Women Attending a Specialized Clinic in British Columbia, Canada. J Immigr Minor Health 2018; 18:1441-1448. [PMID: 26706472 DOI: 10.1007/s10903-015-0332-8] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Screening mammography (MMG) reduces breast cancer mortality; however, Asian immigrant women underutilize MMG. The Asian Women's Health Clinic (AWHC) was established to promote women's cancer screening amongst this population. This study evaluated the rate, and predictors, of MMG amongst women attending the AWHC. Women (N = 98) attending the AWHC completed a questionnaire. Descriptive statistics and multivariable logistic regression evaluated rate and predictors of MMG. Most participants (87 %, n = 85) reported having had a mammogram. Significant MMG predictors were: lower perceived MMG barriers [lifetime: OR (CI) 1.19 (1.01-1.49); past 2 years: OR (CI) 1.11 (1.01-1.25)], and knowing someone with breast cancer [past year: OR (CI) 3.42 (1.25-9.85); past 2 years: OR (CI) 4.91 (1.32-2.13)]. Even amongst women using preventive medicine, 13 % report never having had a mammogram. More research is needed into innovative interventions, e.g. the AWHC, and breast cancer-related outcomes amongst Asian immigrant women.
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Affiliation(s)
- Catriona Hippman
- Women's Health Research Institute, Women's Hospital and Health Centre, Vancouver, BC, Canada. .,Department of Psychiatry, University of British Columbia, Translational Research Building, 3rd Floor-938 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada. .,BC Mental Health and Addictions Research Institute, BC Mental Health and Substance Use Services, Vancouver, BC, Canada.
| | - Arezu Moshrefzadeh
- Women's Health Research Institute, Women's Hospital and Health Centre, Vancouver, BC, Canada
| | - Zoe Lohn
- Women's Health Research Institute, Women's Hospital and Health Centre, Vancouver, BC, Canada
| | - Zoë G Hodgson
- Women's Health Research Institute, Women's Hospital and Health Centre, Vancouver, BC, Canada
| | - Kathryn Dewar
- Women's Health Research Institute, Women's Hospital and Health Centre, Vancouver, BC, Canada
| | - Melanie Lam
- Women's Health Research Institute, Women's Hospital and Health Centre, Vancouver, BC, Canada.,Asian Women's Health Clinic, Women's Hospital and Health Centre, Vancouver, BC, Canada
| | - Arianne Y K Albert
- Women's Health Research Institute, Women's Hospital and Health Centre, Vancouver, BC, Canada
| | - Juliet Kwong
- Asian Women's Health Clinic, Women's Hospital and Health Centre, Vancouver, BC, Canada
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15
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Janssen PA, Korchinski M, Desmarais SL, Albert AYK, Condello LL, Buchanan M, Granger-Brown A, Ramsden VR, Fels L, Buxton JA, Leggo C, Martin RE. Factors that support successful transition to the community among women leaving prison in British Columbia: a prospective cohort study using participatory action research. CMAJ Open 2017; 5:E717-E723. [PMID: 28928168 PMCID: PMC5621961 DOI: 10.9778/cmajo.20160165] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND In Canada, the number of women sentenced to prison has almost doubled since 1995. In British Columbia, the rate of reincarceration is 70% within 2 years. Our aim was to identify factors associated with recidivism among women in British Columbia. METHODS We prospectively followed women after discharge from provincial corrections centres in British Columbia. We defined recidivism as participation in criminal activity disclosed by participants during the year following release. To identify predictive factors, we carried out a repeated-measures analysis using a logistic mixed-effect model. RESULTS Four hundred women completed a baseline interview, of whom 207 completed additional interviews during the subsequent year, contributing 395 interviews in total. Factors significantly associated in univariate analysis with recidivism included not having a family doctor or dentist, depression, not having children, less than high school education, index charge of drug offense or theft under $5000, poor general health, hepatitis C treatment, poor nutritional or spiritual health, and use of cannabis or cocaine. In multivariate analysis, good nutritional health (odds ratio [OR] 0.52 [95% confidence interval (CI) 0.35-0.76]), good spiritual health (OR 0.61 [95% CI 0.44-0.83]), high school education (OR 0.44 [95% CI 0.22-0.87]) and incarceration for a drug offence versus other crimes (OR 0.30 [95% CI 0.12-0.79]) were protective against recidivism. INTERPRETATION Our findings emphasize the relevance of health-related strategies as drivers of recidivism among women released from prison. Health assessment on admission followed by treatment for trauma and associated psychiatric disorders and for chronic medical and dental problems deserve consideration as priority approaches to reduce rates of reincarceration.
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Affiliation(s)
- Patricia A Janssen
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
| | - Mo Korchinski
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
| | - Sarah L Desmarais
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
| | - Arianne Y K Albert
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
| | - Lara-Lisa Condello
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
| | - Marla Buchanan
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
| | - Alison Granger-Brown
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
| | - Vivian R Ramsden
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
| | - Lynn Fels
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
| | - Jane A Buxton
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
| | - Carl Leggo
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
| | - Ruth Elwood Martin
- Affiliations: Child & Family Research Institute (Janssen); School of Population and Public Health (Janssen, Buxton, Elwood Martin); Collaborating Centre for Prison Health and Education (Korchinski, Condello, Elwood Martin), University of British Columbia, Vancouver, BC; Department of Psychology (Desmarais), North Carolina State University, Raleigh, NC; Women's Health Research Institute (Albert), BC Women's Hospital and Health Centre, Vancouver, BC; Nicola Valley Institute of Technology (Condello), Burnaby, BC; Counselling Psychology Program (Buchanan), Faculty of Education, and Centre for Group Counselling and Trauma, University of British Columbia, Vancouver, BC; Fielding Graduate University (Granger-Brown), Santa Barbara, Calif.; Academic Family Medicine (Ramsden), University of Saskatchewan, Saskatoon, Sask.; Arts Education (Fels) and International Centre of Arts for Social Change (Fels), Simon Fraser University; BC Centre for Disease Control (Buxton); Department of Language & Literacy Education (Leggo), University of British Columbia, Vancouver, BC
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16
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Boucoiran I, Albert AYK, Tulloch K, Wagner EC, Pick N, van Schalkwyk J, Harrigan PR, Money D. Human Immunodeficiency Virus Viral Load Rebound Near Delivery in Previously Suppressed, Combination Antiretroviral Therapy-Treated Pregnant Women. Obstet Gynecol 2017; 130:497-501. [PMID: 28796673 DOI: 10.1097/aog.0000000000002133] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To assess the stability of human immunodeficiency virus (HIV) viral load suppression within 1 month before birth in pregnant women receiving antenatal combination antiretroviral therapy (CART). METHODS This is a retrospective cohort study of a Canadian provincial perinatal HIV database from 1997 to 2015. Inclusion criteria were live birth and CART received for at least 4 weeks. Viral load rebound, defined as viral load greater than 50 copies/mL (or greater than 400 copies/mL for 1997-1998) and measured within 1 month before delivery, was identified in women who had at least one previous undetectable viral load during pregnancy. Logistic regressions were conducted to identify the risk factors for viral load rebound. RESULTS Among the 470 women in the database, 318 met inclusion criteria. Viral load rebound was experienced by 19 women (6.0%, 95% CI 3.7-9.3%) with a mean log10 viral load near delivery of 2.71 copies/mL (=513 copies/mL). Six (32%) had a viral load above 1,000 copies/mL. The rebound was detected within 1 day before delivery in 50% of the women. Aboriginal ethnicity, cocaine use, and hepatitis C virus polymerase chain reaction positivity were significantly associated with viral load rebound. There were no HIV vertical transmissions. CONCLUSION Even women attending for HIV care and achieving viral suppression in pregnancy can experience viral load rebound predelivery.
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Affiliation(s)
- Isabelle Boucoiran
- Departments of Obstetrics and Gynaecology and Medicine, University of British Columbia, the Women's Health Research Institute, BC Women's Hospital and Health Centre, and the British Columbia Centre for Excellence for HIV/AIDS, Vancouver, British Columbia, Canada
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17
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Wang L, Albert AYK, Jung B, Hadad K, Lyon ME, Basso M. Limitations and opportunities of whole blood bilirubin measurements by GEM premier 4000®. BMC Pediatr 2017; 17:92. [PMID: 28356083 PMCID: PMC5372304 DOI: 10.1186/s12887-017-0842-8] [Citation(s) in RCA: 5] [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: 11/07/2016] [Accepted: 03/21/2017] [Indexed: 11/23/2022] Open
Abstract
Background Neonatal hyperbilirubinemia has traditionally been screened by either total serum bilirubin or transcutaneous bilirubin. Whole blood bilirubin (TwB) by the GEM Premier 4000® blood gas analyzer (GEM) is a relatively new technology and it provides fast bilirubin results with a small sample volume and can measure co-oximetry and other analytes. Our clinical study was to evaluate the reliability of TwB measured by the GEM and identify analytical and clinical factors that may contribute to possible bias. Methods 440 consecutive healthy newborn samples that had plasma bilirubin ordered for neonatal hyperbilirubinemia screening were included. TwB was first measured using the GEM, after which the remainder of the blood was spun and plasma neonatal bilirubin was measured using the VITROS 5600® (VITROS). Results 62 samples (14%) were excluded from analysis due to failure in obtaining GEM results. Passing-Bablok regression suggested that the GEM results were negatively biased at low concentrations of bilirubin and positively biased at higher concentrations relative to the VITROS results (y = 1.43x-61.13). Bland-Altman plots showed an overall negative bias of the GEM bilirubin with a wide range of differences compared to VITROS. Both hemoglobin concentration and hemolysis affected the accuracy of the GEM results. Clinically, male infants had higher mean bilirubin levels, and infants delivered by caesarean section had lower hemoglobin levels. When comparing the number of results below the 40th percentile and above the 95th percentile cut-offs in the Bhutani nomogram which would trigger discharge or treatment, GEM bilirubin exhibited poor sensitivity and poor specificity in contrast to VITROS bilirubin. Conclusions An imperfect correlation was observed between whole blood bilirubin measured on the GEM4000® and plasma bilirubin on the VITROS 5600®. The contributors to the observed differences between the two instruments were specimen hemolysis and the accuracy of hemoglobin measurements, the latter of which affects the calculation of plasma-equivalent bilirubin. Additionally, the lack of standardization of total bilirubin calibration particularly in newborn specimens, may also account for some of the disagreement in results.
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Affiliation(s)
- Li Wang
- BC Children's & Women's Hospital, University of British Columbia, 4500 Oak Street, Room 2J9, Vancouver, BC, V6H 3 N1, Canada. .,BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada.
| | - Arianne Y K Albert
- Women's Health Research Institute, Children's and Women's Health Centre of British Columbia, University of British Columbia, Vancouver, Canada
| | - Benjamin Jung
- BC Children's & Women's Hospital, University of British Columbia, 4500 Oak Street, Room 2J9, Vancouver, BC, V6H 3 N1, Canada.,BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Keyvan Hadad
- Department of Pediatrics, Children's and Women's Health Centre of British Columbia, University of British Columbia, Vancouver, Canada
| | - Martha E Lyon
- Department of Pathology and Laboratory Medicine, Royal University Hospital, Saskatoon Health Region, University of Saskatchewan, Saskatoon, Canada
| | - Melanie Basso
- Perinatal Health Program, Department of Obstetrics and Gynecology, Children's and Women's Health Centre of British Columbia, University of British Columbia, Vancouver, Canada.,BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
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18
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Fox CW, Albert AYK, Vines TH. Recruitment of reviewers is becoming harder at some journals: a test of the influence of reviewer fatigue at six journals in ecology and evolution. Res Integr Peer Rev 2017; 2:3. [PMID: 29451533 PMCID: PMC5803623 DOI: 10.1186/s41073-017-0027-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 02/04/2017] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND It is commonly reported by editors that it has become harder to recruit reviewers for peer review and that this is because individuals are being asked to review too often and are experiencing reviewer fatigue. However, evidence supporting these arguments is largely anecdotal. MAIN BODY We examine responses of individuals to review invitations for six journals in ecology and evolution. The proportion of invitations that lead to a submitted review has been decreasing steadily over 13 years (2003-2015) for four of the six journals examined, with a cumulative effect that has been quite substantial (average decline from 56% of review invitations generating a review in 2003 to just 37% in 2015). The likelihood that an invitee agrees to review declines significantly with the number of invitations they receive in a year. However, the average number of invitations being sent to prospective reviewers and the proportion of individuals being invited more than once per year has not changed much over these 13 years, despite substantial increases in the total number of review invitations being sent by these journals-the reviewer base has expanded concomitant with this growth in review requests. CONCLUSIONS The proportion of review invitations that lead to a review being submitted has been declining steadily for four of the six journals examined here, but reviewer fatigue is not likely the primary explanation for this decline.
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Affiliation(s)
- Charles W. Fox
- Department of Entomology, University of Kentucky, Lexington, KY 40546-0091 USA
| | - Arianne Y. K. Albert
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, British Columbia V6H 3N1 Canada
| | - Timothy H. Vines
- Axios Review Editorial Office, 4521 John Street, Vancouver, British Columbia V5V 3X3 Canada
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19
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Kwon JS, Albert AYK, Gill S, Hutcheon JA. Diabetic Pharmacotherapy and Endometrial Cancer Risk Within a Publicly Funded Health Care System. J Obstet Gynaecol Can 2017; 39:42-48. [PMID: 28062022 DOI: 10.1016/j.jogc.2016.09.078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 09/19/2016] [Indexed: 11/17/2022]
Abstract
OBJECTIVE There is conflicting evidence regarding the association between metformin and endometrial cancer risk. The objective of this study was to evaluate the association between type of diabetic pharmacotherapy and endometrial cancer risk within a population-based study. The hypothesis was that metformin was associated with the lowest risk. METHODS This was a nested case-control study using data from the BC Cancer Registry (2000-2009) and from a province-wide prescription network (PharmaNet) since 1996. Patients were classified by drug exposure (metformin, thiazolidinediones, secretagogues, with or without insulin). The primary analysis was a conditional logistic regression to estimate the odds ratios for endometrial cancer in the drug exposure groups. Sensitivity analysis was carried out to account for uncertainty regarding various parameters. The secondary analysis evaluated the effect of dosage using a principal components analysis. RESULTS The study cohort comprised 492 cases and 4404 controls. The primary analysis revealed no difference in endometrial cancer risk between those using metformin and those prescribed other classes of medications (OR 1.5, 95% CI 0.9 to 2.4). Women receiving all classes of medications had almost a two-fold increase in risk (OR 1.9, 95% CI 1.1 to 3.3). The secondary analysis revealed an increased risk associated with a greater duration of treatment and number of prescriptions (OR 1.3, 95% CI 1.2 to 1.4). CONCLUSION In this population-based study, metformin was not associated with a decreased endometrial cancer risk. Women receiving multiple types of medications over a long time had the highest risk, implying that the extent of insulin resistance, rather than the effect of any specific medication, drives endometrial cancer risk.
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Affiliation(s)
- Janice S Kwon
- Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver BC
| | - Arianne Y K Albert
- Women's Health Research Institute, BC Women's Hospital and Health Centre, Vancouver BC
| | - Sabrina Gill
- Division of Endocrinology, Department of Medicine, University of British Columbia, Vancouver BC
| | - Jennifer A Hutcheon
- Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver BC
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20
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Paramel Jayaprakash T, Wagner EC, van Schalkwyk J, Albert AYK, Hill JE, Money DM. High Diversity and Variability in the Vaginal Microbiome in Women following Preterm Premature Rupture of Membranes (PPROM): A Prospective Cohort Study. PLoS One 2016; 11:e0166794. [PMID: 27861554 PMCID: PMC5115810 DOI: 10.1371/journal.pone.0166794] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 11/03/2016] [Indexed: 11/18/2022] Open
Abstract
Objective To characterize the vaginal microbiota of women following preterm premature rupture of membranes (PPROM), and determine if microbiome composition predicts latency duration and perinatal outcomes. Design A prospective cohort study Setting Canada Population Women with PPROM between 24+0 and 33+6 weeks gestational age (GA). Methods Microbiome profiles, based on pyrosequencing of the cpn60 universal target, were generated from vaginal samples at time of presentation with PPROM, weekly thereafter, and at delivery. Main Outcome Measures Vaginal microbiome composition, latency duration, gestational age at delivery, perinatal outcomes. Results Microbiome profiles were generated from 70 samples from 36 women. Mean GA at PPROM was 28.8 wk (mean latency 2.7 wk). Microbiome profiles were highly diverse but sequences representing Megasphaera type 1 and Prevotella spp. were detected in all vaginal samples. Only 13/70 samples were dominated by Lactobacillus spp. Microbiome profiles at the time of membrane rupture did not cluster by gestational age at PPROM, latency duration, presence of chorioamnionitis or by infant outcomes. Mycoplasma and/or Ureaplasma were detected by PCR in 81% (29/36) of women, and these women had significantly lower GA at delivery and correspondingly lower birth weight infants than Mycoplasma and/or Ureaplasma negative women. Conclusion Women with PPROM had mixed, abnormal vaginal microbiota but the microbiome profile at PPROM did not correlate with latency duration. Prevotella spp. and Megasphaera type I were ubiquitous. The presence of Mollicutes in the vaginal microbiome was associated with lower GA at delivery. The microbiome was remarkably unstable during the latency period.
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Affiliation(s)
| | - Emily C. Wagner
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
| | - Julie van Schalkwyk
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
- Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, BC, Canada
| | - Arianne Y. K. Albert
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
| | - Janet E. Hill
- Department of Veterinary Microbiology, University of Saskatchewan, Saskatoon, SK, Canada
| | - Deborah M. Money
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
- Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, BC, Canada
- * E-mail:
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21
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Albert AYK, Gow JL, Cobra A, Vines TH. Is it becoming harder to secure reviewers for peer review? A test with data from five ecology journals. Res Integr Peer Rev 2016; 1:14. [PMID: 29451554 PMCID: PMC5803631 DOI: 10.1186/s41073-016-0022-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 09/28/2016] [Indexed: 11/10/2022] Open
Abstract
Background There is concern in the academic publishing community that it is becoming more difficult to secure reviews for peer-reviewed manuscripts, but much of this concern stems from anecdotal and rhetorical evidence. Methods We examined the proportion of review requests that led to a completed review over a 6-year period (2009–2015) in a mid-tier biology journal (Molecular Ecology). We also re-analyzed previously published data from four other mid-tier ecology journals (Functional Ecology, Journal of Ecology, Journal of Animal Ecology, and Journal of Applied Ecology), looking at the same proportion over the period 2003 to 2010. Results The data from Molecular Ecology showed no significant decrease through time in the proportion of requests that led to a review (proportion in 2009 = 0.47 (95 % CI = 0.43 to 0.52), proportion in 2015 = 0.44 (95 % CI = 0.40 to 0.48)). This proportion did decrease for three of the other ecology journals (changes in proportions from 2003 to 2010 = −0.10, −0.18, and −0.09), while the proportion for the fourth (Functional Ecology) stayed roughly constant (change in proportion = −0.04). Conclusions Overall, our data suggest that reviewer agreement rates have probably declined slightly but not to the extent suggested by the anecdotal and rhetorical evidence.
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Affiliation(s)
- Arianne Y K Albert
- 1Women's Health Research Institute, 4500 Oak Street, Vancouver, BC Canada V6H 3N1
| | - Jennifer L Gow
- Molecular Ecology Editorial Office, 6270 University Blvd, Vancouver, BC Canada V6T 1Z4.,Current address: Axios Review Editorial Office, 4521 John Street, Vancouver, BC Canada V5V 3X3
| | - Alison Cobra
- Molecular Ecology Editorial Office, 6270 University Blvd, Vancouver, BC Canada V6T 1Z4.,Current address: Axios Review Editorial Office, 4521 John Street, Vancouver, BC Canada V5V 3X3
| | - Timothy H Vines
- Molecular Ecology Editorial Office, 6270 University Blvd, Vancouver, BC Canada V6T 1Z4.,Current address: Axios Review Editorial Office, 4521 John Street, Vancouver, BC Canada V5V 3X3
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22
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Vines TH, Dalziel AC, Albert AYK, Veen T, Schulte PM, Schluter D. Cline coupling and uncoupling in a stickleback hybrid zone. Evolution 2016; 70:1023-38. [DOI: 10.1111/evo.12917] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 02/23/2016] [Accepted: 03/18/2016] [Indexed: 01/19/2023]
Affiliation(s)
- Timothy H. Vines
- Biodiversity Research Centre; University of British Columbia; Vancouver British Columbia V6T 1Z4 Canada
- Axios Review Editorial Office; Vancouver British Columbia V5V 3X3 Canada
| | - Anne C. Dalziel
- Department of Biology; Saint Mary's University; Nova Scotia B3H 3C3 Canada
| | | | - Thor Veen
- Integrative Biology, University of Texas at Austin; Austin Texas 78712
| | - Patricia M. Schulte
- Biodiversity Research Centre; University of British Columbia; Vancouver British Columbia V6T 1Z4 Canada
| | - Dolph Schluter
- Biodiversity Research Centre; University of British Columbia; Vancouver British Columbia V6T 1Z4 Canada
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23
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Sokalski KM, Chu J, Mai AY, Qiu AQ, Albert AYK, Zanet DL, Côté HCF, Maan EJ, Pick N, Prior JC, Money DM, Murray MCM. Endocrine abnormalities in HIV-infected women are associated with peak viral load - the Children and Women: AntiRetrovirals and Markers of Aging (CARMA) Cohort. Clin Endocrinol (Oxf) 2016; 84:452-62. [PMID: 26300027 DOI: 10.1111/cen.12881] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 07/31/2015] [Accepted: 08/14/2015] [Indexed: 12/17/2022]
Abstract
OBJECTIVES To investigate the prevalence of endocrine disturbances in a group of HIV-positive (HIV+) women and to identify factors affecting presence of these disorders. To examine specifically whether cellular ageing, as measured by leukocyte telomere length (LTL), is correlated with the presence of endocrine disturbance. DESIGN A cross-sectional retrospective substudy of an ongoing prospective cohort study. PATIENTS Adult HIV+ (≥19 years) women enrolled in the CARMA (Children and Women: AntiRetrovirals and Markers of Aging) cohort study (N = 192). Prevalences of T2DM, glucose intolerance, dyslipidaemia, thyroid disorders, adrenal insufficiency, hypogonadism, primary ovarian insufficiency (POI), demographics, HIV and hepatitis C virus (HCV) infection status, baseline LTL, combined antiRetroviral therapy (cART) and substance exposures were collected. Statistical analysis included univariable followed by multivariable Poisson regression and step-wise reduction to refine the multivariable model. RESULTS Prevalence of any endocrine abnormality was 58% (dyslipidaemia 43%, glucose intolerance/T2DM 13%, thyroid disorders 15%). In multivariable analysis, age was associated with number and type (any, glucose, lipid) of abnormality, while increasing body mass index (BMI) was associated with number of diagnoses and with glucose metabolism disorders. Interestingly, peak HIV pVL ≥100 000 copies/ml was associated with any abnormality, total number of disorders and presence of a thyroid disorder, while any disorder, glucose abnormalities and dyslipidaemia were negatively associated with alcohol use. LTL was not associated with number or type of endocrine abnormalities in this study. CONCLUSION Further studies examining the relationship between duration and extent of exposure to HIV viraemia in relation to developing abnormal endocrine function are warranted.
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Affiliation(s)
- Kristen M Sokalski
- Department of Medicine, University of British Columbia (UBC), Vancouver, BC, Canada
| | - Jackson Chu
- Department of Medicine, University of British Columbia (UBC), Vancouver, BC, Canada
| | - Alice Y Mai
- Department of Medicine, University of British Columbia (UBC), Vancouver, BC, Canada
| | - Annie Q Qiu
- Department of Biochemistry and Molecular Biology, UBC, Vancouver, BC, Canada
- Oak Tree Clinic, BC Women's Hospital, Vancouver, BC, Canada
| | | | - DeAnna L Zanet
- Department of Pathology & Laboratory Medicine, UBC, Vancouver, BC, Canada
| | - Hélène C F Côté
- Women's Health Research Institute, Vancouver, BC, Canada
- Department of Pathology & Laboratory Medicine, UBC, Vancouver, BC, Canada
| | - Evelyn J Maan
- Oak Tree Clinic, BC Women's Hospital, Vancouver, BC, Canada
| | - Neora Pick
- Oak Tree Clinic, BC Women's Hospital, Vancouver, BC, Canada
- Women's Health Research Institute, Vancouver, BC, Canada
- Department of Medicine, Division of Infectious Disease, UBC, Vancouver, BC, Canada
| | - Jerilynn C Prior
- Department of Medicine, Division of Endocrinology, Centre for Menstrual Cycle and Ovulation Research, UBC, Vancouver, BC, Canada
| | - Deborah M Money
- Oak Tree Clinic, BC Women's Hospital, Vancouver, BC, Canada
- Women's Health Research Institute, Vancouver, BC, Canada
- Department of Obstetrics and Gynecology, UBC, Vancouver, BC, Canada
| | - Melanie C M Murray
- Oak Tree Clinic, BC Women's Hospital, Vancouver, BC, Canada
- Women's Health Research Institute, Vancouver, BC, Canada
- Department of Medicine, Division of Infectious Disease, UBC, Vancouver, BC, Canada
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Hippman C, Ringrose A, Inglis A, Cheek J, Albert AYK, Remick R, Honer WG, Austin JC. A pilot randomized clinical trial evaluating the impact of genetic counseling for serious mental illnesses. J Clin Psychiatry 2016; 77:e190-8. [PMID: 26930535 PMCID: PMC4864025 DOI: 10.4088/jcp.14m09710] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 04/08/2015] [Indexed: 01/02/2023]
Abstract
OBJECTIVE The serious mental illnesses schizophrenia, schizoaffective disorder, and bipolar disorder are complex conditions affecting 1% to 4% of the population. Individuals with serious mental illnesses express interest in genetic counseling, an intervention showing promise for increasing patient knowledge and adaptation. This trial aimed to evaluate the effects of genetic counseling for people with serious mental illnesses as compared to an educational intervention or wait list. METHOD A pilot 3-arm (each n = 40; genetic counseling, a control intervention involving an educational booklet, or wait list), parallel-group, randomized clinical trial was conducted from September 2008 through November 2011 in Vancouver, Canada. Participants with schizophrenia, bipolar disorder, or schizoaffective disorder (DSM-IV) completed outcome measures assessing knowledge, risk perception, internalized stigma, and perceived control over illness at baseline and 1-month follow-up. The Brief Symptom Inventory was administered to control for current symptoms. Analyses included linear mixed-effects models and χ(2) tests. RESULTS Knowledge increased for genetic counseling/educational booklet compared to wait list at follow-up (LRT1 = 19.33, Holm-adjusted P = .0003, R(2)LMM(m) = 0.17). Risk perception accuracy increased at follow-up for genetic counseling compared to wait list (Yates continuity corrected χ(2)1 = 9.1, Bonferroni P = .003) and educational booklet (Yates continuity corrected χ(2)1 = 8.2, Bonferroni P = .004). There were no significant differences between groups for stigma or perceived control scores. CONCLUSIONS Genetic counseling and the educational booklet improved knowledge, and genetic counseling, but not the educational booklet, improved risk perception accuracy for this population. The impact of genetic counseling on internalized stigma and perceived control is worth further investigation. Genetic counseling should be considered for patients with serious mental illnesses. TRIAL REGISTRATION ClinicalTrials.gov identifier: NCT00713804.
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Affiliation(s)
- Catriona Hippman
- University of British Columbia, Department of Psychiatry, Vancouver, Canada
- Women's Health Research Institute, Vancouver, Canada
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Money DM, Wagner EC, Maan EJ, Chaworth-Musters T, Gadawski I, van Schalkwyk JE, Forbes JC, Burdge DR, Albert AYK, Lohn Z, Côté HCF. Evidence of Subclinical mtDNA Alterations in HIV-Infected Pregnant Women Receiving Combination Antiretroviral Therapy Compared to HIV-Negative Pregnant Women. PLoS One 2015; 10:e0135041. [PMID: 26247211 PMCID: PMC4527775 DOI: 10.1371/journal.pone.0135041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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] [Received: 03/26/2015] [Accepted: 07/16/2015] [Indexed: 01/16/2023] Open
Abstract
Introduction Combination antiretroviral therapy (cART) can effectively prevent vertical transmission of HIV but there is potential risk of adverse maternal, foetal or infant effects. Specifically, the effect of cART use during pregnancy on mitochondrial DNA (mtDNA) content in HIV-positive (HIV+) women is unclear. We sought to characterize subclinical alterations in peripheral blood mtDNA levels in cART-treated HIV+ women during pregnancy and the postpartum period. Methods This prospective longitudinal observational cohort study enrolled both HIV+ and HIV-negative (HIV-) pregnant women. Clinical data and blood samples were collected at three time points in pregnancy (13-<23 weeks, 23-<30 weeks, 30–40 weeks), and at delivery and six weeks post-partum in HIV+ women. Peripheral blood mtDNA to nuclear DNA (nDNA) ratio was measured by qPCR. Results Over a four year period, 63 HIV+ and 42 HIV- women were enrolled. HIV+ women showed significantly lower mtDNA/nDNA ratios compared to HIV- women during pregnancy (p = 0.003), after controlling for platelet count and repeated measurements using a multivariable mixed-effects model. Ethnicity, gestational age (GA) and substance use were also significantly associated with mtDNA/nDNA ratio (p≤0.02). Among HIV+ women, higher CD4 nadir was associated with higher mtDNA/nDNA ratios (p<0.0001), and these ratio were significantly lower during pregnancy compared to the postpartum period (p<0.0001). Conclusions In the context of this study, it was not possible to distinguish between mtDNA effects related to HIV infection versus cART therapy. Nevertheless, while mtDNA levels were relatively stable over time in both groups during pregnancy, they were significantly lower in HIV+ women compared to HIV- women. Although no immediate clinical impact was observed on maternal or infant health, lower maternal mtDNA levels may exert long-term effects on women and children and remain a concern. Improved knowledge of such subclinical alterations is another step toward optimizing the safety and efficacy of cART regimens during pregnancy.
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Affiliation(s)
- Deborah M. Money
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
- Oak Tree Clinic, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
- * E-mail:
| | - Emily C. Wagner
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
| | - Evelyn J. Maan
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
- Oak Tree Clinic, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
| | - Tessa Chaworth-Musters
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Izabelle Gadawski
- Department of Pathology and Laboratory Medicine, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Julie E. van Schalkwyk
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
| | - John C. Forbes
- Department of Paediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - David R. Burdge
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
| | - Arianne Y. K. Albert
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
| | - Zoe Lohn
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
| | - Hélène C. F. Côté
- Women’s Health Research Institute, BC Women’s Hospital and Health Centre, Vancouver, BC, Canada
- Department of Pathology and Laboratory Medicine, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
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Andrew RL, Albert AYK, Renaut S, Rennison DJ, Bock DG, Vines T. Assessing the reproducibility of discriminant function analyses. PeerJ 2015; 3:e1137. [PMID: 26290793 PMCID: PMC4540019 DOI: 10.7717/peerj.1137] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 02/13/2015] [Accepted: 07/08/2015] [Indexed: 11/20/2022] Open
Abstract
Data are the foundation of empirical research, yet all too often the datasets underlying published papers are unavailable, incorrect, or poorly curated. This is a serious issue, because future researchers are then unable to validate published results or reuse data to explore new ideas and hypotheses. Even if data files are securely stored and accessible, they must also be accompanied by accurate labels and identifiers. To assess how often problems with metadata or data curation affect the reproducibility of published results, we attempted to reproduce Discriminant Function Analyses (DFAs) from the field of organismal biology. DFA is a commonly used statistical analysis that has changed little since its inception almost eight decades ago, and therefore provides an opportunity to test reproducibility among datasets of varying ages. Out of 100 papers we initially surveyed, fourteen were excluded because they did not present the common types of quantitative result from their DFA or gave insufficient details of their DFA. Of the remaining 86 datasets, there were 15 cases for which we were unable to confidently relate the dataset we received to the one used in the published analysis. The reasons ranged from incomprehensible or absent variable labels, the DFA being performed on an unspecified subset of the data, or the dataset we received being incomplete. We focused on reproducing three common summary statistics from DFAs: the percent variance explained, the percentage correctly assigned and the largest discriminant function coefficient. The reproducibility of the first two was fairly high (20 of 26, and 44 of 60 datasets, respectively), whereas our success rate with the discriminant function coefficients was lower (15 of 26 datasets). When considering all three summary statistics, we were able to completely reproduce 46 (65%) of 71 datasets. While our results show that a majority of studies are reproducible, they highlight the fact that many studies still are not the carefully curated research that the scientific community and public expects.
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Affiliation(s)
- Rose L Andrew
- School of Environmental and Rural Science, University of New England , Armidale, NSW , Australia ; Biodiversity Research Centre, University of British Columbia , Vancouver, BC , Canada
| | - Arianne Y K Albert
- Women's Health Research Institute, BC Women's Hospital and Health Centre , Vancouver, BC , Canada
| | - Sebastien Renaut
- Biodiversity Research Centre, University of British Columbia , Vancouver, BC , Canada ; Institut de recherche en biologie végétale, Département de sciences biologiques, Université de Montréal , Montreal, QC , Canada
| | - Diana J Rennison
- Biodiversity Research Centre, University of British Columbia , Vancouver, BC , Canada
| | - Dan G Bock
- Biodiversity Research Centre, University of British Columbia , Vancouver, BC , Canada
| | - Tim Vines
- Biodiversity Research Centre, University of British Columbia , Vancouver, BC , Canada ; Molecular Ecology Editorial Office , Vancouver, BC , Canada
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Sebbag I, Massey SR, Albert AYK, Dube A, Gunka V, Douglas MJ. A Prospective Observational Comparison Between Arm and Wrist Blood Pressure During Scheduled Cesarean Delivery. Anesth Analg 2015; 121:767-775. [PMID: 26097985 DOI: 10.1213/ane.0000000000000817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Shivering is common during cesarean delivery (CD) under neuraxial anesthesia and may disrupt the measurement of noninvasive blood pressure (BP). BP measured at the wrist may be less affected by shivering. There have been no studies comparing trends in BP measured on the upper arm and wrist. We hypothesized that wrist systolic blood pressure (sBP) would accurately trend with upper arm sBP measurements (agree within a limit of ±10%) in parturients undergoing elective CD under spinal anesthesia or combined spinal-epidural anesthesia. METHODS After initiation of spinal anesthesia, BP measurements were obtained simultaneously from the upper arm and wrist on opposite arms. The interval between measurements was 1 to 2 minutes, and data were collected for 20 minutes or until delivery. The primary outcome was agreement in dynamic changes in sBP measurements between the upper arm and the wrist. Bland-Altman plots indicating the levels of agreement between the methods were drawn for baseline measurements, over multiple measurements, and over multiple measurements on percentage change from baseline. RESULTS Forty-nine patients were recruited and completed the study. The wrist sBP tended to overestimate the upper sBP for both baseline data (sBP bias = 13.4 mm Hg; 95% confidence interval = +10.4 to +16.4 mm Hg) and data obtained over multiple measurements (sBP bias = 12.8 mm Hg; 95% confidence interval = +9.3 to +16.3 mm Hg). For change in sBP from baseline over multiple measurements, the mean difference between the wrist and the arm sBP was -0.2 percentage points (99% limits of agreement -25 to +25 percentage points). CONCLUSIONS The wrist measurement overestimated the reading relative to the upper arm measurement for multiple measurements over time. However, when the time series for each subject was examined for percentage change from baseline, the 2 methods mirrored each other in most cases. Nevertheless, our hypothesis was rejected as the limits of agreement were higher than ±10%. This finding suggests that wrist BP may not be an accurate method of detecting hypotension or hypertension during spinal or combined spinal-epidural anesthesia for CD.
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Affiliation(s)
- Ilana Sebbag
- From the Department of Anesthesia & Perioperative Medicine, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada; Department of Anesthesia, BC Women's Hospital, Vancouver, British Columbia, Canada; Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada; and Women's Health Research Institute, BC Women's Hospital, Vancouver, British Columbia, Canada
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Vines TH, Albert AYK, Andrew RL, Débarre F, Bock DG, Franklin MT, Gilbert KJ, Moore JS, Renaut S, Rennison DJ. The availability of research data declines rapidly with article age. Curr Biol 2014; 24:94-97. [PMID: 24361065 DOI: 10.1016/j.cub.2013.11.014] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 11/05/2013] [Accepted: 11/05/2013] [Indexed: 11/28/2022]
Abstract
Policies ensuring that research data are available on public archives are increasingly being implemented at the government [1], funding agency [2-4], and journal [5, 6] level. These policies are predicated on the idea that authors are poor stewards of their data, particularly over the long term [7], and indeed many studies have found that authors are often unable or unwilling to share their data [8-11]. However, there are no systematic estimates of how the availability of research data changes with time since publication. We therefore requested data sets from a relatively homogenous set of 516 articles published between 2 and 22 years ago, and found that availability of the data was strongly affected by article age. For papers where the authors gave the status of their data, the odds of a data set being extant fell by 17% per year. In addition, the odds that we could find a working e-mail address for the first, last, or corresponding author fell by 7% per year. Our results reinforce the notion that, in the long term, research data cannot be reliably preserved by individual researchers, and further demonstrate the urgent need for policies mandating data sharing via public archives.
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Affiliation(s)
- Timothy H Vines
- Biodiversity Research Centre, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada; Molecular Ecology Editorial Office, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada.
| | - Arianne Y K Albert
- Women's Health Research Institute, 4500 Oak Street, Vancouver, BC V6H 3N1, Canada
| | - Rose L Andrew
- Biodiversity Research Centre, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
| | - Florence Débarre
- Biodiversity Research Centre, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada; Centre for Ecology & Conservation Biosciences, University of Exeter, Cornwall Campus, Tremough, Penryn TR10 9EZ, UK
| | - Dan G Bock
- Biodiversity Research Centre, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
| | - Michelle T Franklin
- Biodiversity Research Centre, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada; Institute for Sustainable Horticulture, Kwantlen Polytechnic University, 12666 72(nd) Avenue, Surrey, BC V3W 2M8, Canada
| | - Kimberly J Gilbert
- Biodiversity Research Centre, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
| | - Jean-Sébastien Moore
- Biodiversity Research Centre, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada; Department of Biology, Université Laval, 1030 Avenue de la Médecine, Laval, QC G1V 0A6, Canada
| | - Sébastien Renaut
- Biodiversity Research Centre, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
| | - Diana J Rennison
- Biodiversity Research Centre, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
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Abstract
Sex ratio adjustment (SRA) of broods has received widespread interest as a means for optimizing parental investment in offspring. Classical explanations for the evolution of SRA focus on improving offspring fitness in light of resource availability or mate attractiveness. Here, we use genetic models to demonstrate that SRA can evolve to alleviate sexual antagonism by improving the chance that the alleles of a sexually antagonistic trait are transmitted to the sex they benefit. In cases where the trait is autosomally inherited, this result is obtained regardless of whether SRA is based on the mother's or the father's genotype and irrespective of the recombination rate between the trait and SRA loci. SRA also evolves in this manner when the trait is sex-linked, provided that SRA decisions are based on the homogametic genotype (XX mothers or ZZ fathers). By contrast, when based on traits in the heterogametic sex, SRA promotes fixation of the allele that is detrimental to that sex, preventing the evolution of substantial levels of SRA. Our models indicate that the evolution of SRA in nature should be strongly influenced by the genetic architecture of the traits on which it is based and the form of selection affecting them.
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Affiliation(s)
- Gwylim S Blackburn
- Department of Zoology and Biodiversity Research Centre, University of British Columbia, Vancouver, Canada
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Albert AYK, Sawaya S, Vines TH, Knecht AK, Miller CT, Summers BR, Balabhadra S, Kingsley DM, Schluter D. The genetics of adaptive shape shift in stickleback: pleiotropy and effect size. Evolution 2007; 62:76-85. [PMID: 18005154 DOI: 10.1111/j.1558-5646.2007.00259.x] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The distribution of effect sizes of genes underlying adaptation is unknown (Orr 2005). Are suites of traits that diverged under natural selection controlled by a few pleiotropic genes of large effect (major genes model), by many independently acting genes of small effect (infinitesimal model), or by a combination, with frequency inversely related to effect size (geometric model)? To address this we carried out a quantitative trait loci (QTL) study of a suite of 54 position traits describing body shapes of two threespine stickleback species: an ancestral Pacific marine form and a highly derived benthic species inhabiting a geologically young lake. About half of the 26 detected QTL affected just one coordinate and had small net effects, but several genomic regions affected multiple aspects of shape and had large net effects. The distribution of effect sizes followed the gamma distribution, as predicted by the geometric model of adaptation when detection limits are taken into account. The sex-determining chromosome region had the largest effect of any QTL. Ancestral sexual dimorphism was similar to the direction of divergence, and was largely eliminated during freshwater adaptation, suggesting that sex differences may provide variation upon which selection can act. Several shape QTL are linked to Eda, a major gene responsible for reduction of lateral body armor in freshwater. Our results are consistent with predictions of the geometric model of adaptation. Shape evolution in stickleback results from a few genes with large and possibly widespread effects and multiple genes of smaller effect.
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Affiliation(s)
- Arianne Y K Albert
- Department of Zoology and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada.
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Abstract
Sexual selection is a potent evolutionary force. However, very few models have considered the evolution of female preferences for traits expressed in both sexes. Here we explore how female preferences coevolve with sexually antagonistic traits, which involve alleles that are beneficial to one sex but harmful to the other. We show that with a sexually antagonistic trait on the X chromosome (males XY, females XX), females evolve to prefer mates carrying alleles beneficial to daughters. In contrast, with a Z-linked trait (males ZZ, females ZW), females more often evolve mating preferences for mates carrying alleles beneficial to sons (that is, flashy displays).
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Affiliation(s)
- Arianne Y K Albert
- Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.
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Affiliation(s)
- Arianne Y K Albert
- Zoology Department and Biodiversity Research Centre, University of British Columbia, Vancouver, Canada.
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Albert AYK. Mate choice, sexual imprinting, and speciation: a test of a one-allele isolating mechanism in sympatric sticklebacks. Evolution 2005; 59:927-31. [PMID: 15926703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
One-allele isolating mechanisms should make the evolution of reproductive isolation between potentially hybridizing taxa easier than two-allele mechanisms, but the generality of one-allele mechanisms in nature has yet to be established. A potentially important one-allele mechanism is sexual imprinting, where the mate preferences of individuals are based on the phenotype of their parents. Here I test the possibility that sexual imprinting promotes reproductive isolation using sympatric species of threespine sticklebacks (Gasterosteus aculeatus). Sympatric species of sticklebacks consist of large benthic species and small limnetic species that are reproductively isolated and adapted to feeding in different environments. I fostered families of F1 hybrids between the species to males of both species. Preferences of these fostered females for males of either type revealed little or no effect of sexual imprinting on assortative mating. However, F1 females showed preferences for males that were similar to themselves in length, suggesting that size-assortative mating may be more important than sexual imprinting for promoting reproductive isolation between species pairs of threespine sticklebacks.
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Affiliation(s)
- Arianne Y K Albert
- Department of Zoology and Centre for Biodiversity Research, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.
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Albert AYK. MATE CHOICE, SEXUAL IMPRINTING, AND SPECIATION: A TEST OF A ONE-ALLELE ISOLATING MECHANISM IN SYMPATRIC STICKLEBACKS. Evolution 2005. [DOI: 10.1554/04-609] [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: 11/16/2022]
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Abstract
Reproductive isolation can evolve between species as a byproduct of adaptation to different niches, through reinforcement, and by direct selection on mating preferences. We investigated the potential role of direct selection in the reproductive isolation between sympatric species of threespine sticklebacks. Each sympatric pair consists of a small-bodied limnetic species and large-bodied benthic species. We compared the mate preferences and courtship behavior of males from one sympatric limnetic population and two allopatric populations. We used limnetic-like allopatric populations to control for the effects of ecological character displacement and adaptation to different niches on mate preferences. The sympatric limnetic males preferred the small limnetic females, whereas the allopatric limnetic-like males preferred the large benthic females, suggesting that adaptation to the limnetic niche does not automatically confer a preference for small limnetic females. This reproductive character displacement of male preference is consistent with the predictions of both reinforcement and direct selection on mate preferences. To test for direct selection, we assessed a prediction of one proposed mechanism: predation by benthic females on eggs guarded by limnetic males. The allopatric males come from populations in which there is no egg predation. Sympatric limnetic males were more aggressive toward benthic females than toward limnetic females, whereas the allopatric limnetic-like males did not treat the two types of females differently. The contrast in male behavior suggests that egg predation has shaped male preferences. Direct selection is potentially more effective than indirect selection via reinforcement, and it is likely that it has been important in building up reproductive isolation between limnetic and benthic sticklebacks.
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Affiliation(s)
- A Y K Albert
- Department of Zoology and Centre for Biodiversity Research, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada.
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