Karen Sherwood

ORCID: 0000-0002-3191-7263
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About
Contact & Profiles
Research Areas
  • Renal Transplantation Outcomes and Treatments
  • Cytomegalovirus and herpesvirus research
  • Organ Donation and Transplantation
  • Organ Transplantation Techniques and Outcomes
  • Renal Diseases and Glomerulopathies
  • Complement system in diseases
  • RNA Research and Splicing
  • Mosquito-borne diseases and control
  • Molecular Biology Techniques and Applications
  • Intraperitoneal and Appendiceal Malignancies
  • Appendicitis Diagnosis and Management
  • Transplantation: Methods and Outcomes
  • Cancer Genomics and Diagnostics
  • SARS-CoV-2 and COVID-19 Research
  • Hematopoietic Stem Cell Transplantation
  • Blood groups and transfusion
  • COVID-19 Clinical Research Studies
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Renal and Vascular Pathologies
  • Minimally Invasive Surgical Techniques
  • Prenatal Screening and Diagnostics
  • Immunotherapy and Immune Responses
  • Long-Term Effects of COVID-19
  • Metabolism and Genetic Disorders
  • T-cell and B-cell Immunology

University of British Columbia
2014-2025

Vancouver Coastal Health
2023-2024

Vancouver General Hospital
2020

Roslin Institute
2011-2015

University of Edinburgh
2015

St. Paul's Hospital
2014

Royal Veterinary College
2014

University of Cape Town
2013

Leeds General Infirmary
2006

Brunel University of London
2006

Thirty-five children, three months to 14 years of age, with disfiguring port-wine stains were treated a flashlamp-pulsed tunable dye laser. All had complete clearing the after an average 6.5 laser treatments each lesional area; skin over bony prominences required approximately half as many sessions on cheek. Children less than seven old fewer (mean ±SD, 5.8±1.1) older children (7.1±1.1; P<0.05). Treated was identical in texture and color adjacent normal 33 (94.3 percent) whereas 2 (5.7...

10.1056/nejm198902163200702 article EN New England Journal of Medicine 1989-02-16

Background Despite advances in clinical management, cytomegalovirus (CMV) infection remains a serious complication and an important cause of morbidity mortality following kidney transplantation. Here, we explore the importance viral load kinetics as predictors risk potential guides to therapy reduce transplant failure large longitudinal Genome Canada Transplant Consortium (GCTC) cohort. Methods We examined relationship between CMV rates characteristics, kinetics, graft patient outcomes 2510...

10.3389/fimmu.2023.1302627 article EN cc-by Frontiers in Immunology 2024-01-31

How often does out-of-pocket payment (OPP) for assisted reproduction techniques (ART) with conventional ovarian stimulation result in catastrophic expenditure households? Catastrophic cost was a frequent event affecting 51% of the poorest study participants and one five couples total. There is increasing concern about spending on health by households low resource settings, but to date no has evaluated OPP ART. We conducted prospective observational comprising 135 undergoing ART between March...

10.1093/humrep/det290 article EN Human Reproduction 2013-07-21

Background The use of cardiac biomarkers to assist in the diagnosis occult and symptomatic hypertrophic cardiomyopathy ( HCM ) cats has been established. There is limited data describing their prognostic utility with . Hypothesis Circulating concentrations N‐terminal B‐type natriuretic peptide (NTproBNP) troponin I cTnI predict death Animals Forty‐one diagnosed at a veterinary teaching hospital, between February 2010 May 2011. Methods Prospective investigational study. Plasma samples were...

10.1111/jvim.12459 article EN Journal of Veterinary Internal Medicine 2014-10-15

Semliki Forest virus (SFV) provides a well-characterized model system to study the pathogenesis of encephalitis. Several studies have used derived from molecular clone SFV4. SFV4 does not same phenotype as closely related L10 or prototype which its was derived. In mice, generates high-titer plasma viremia, is efficiently neuroinvasive, and produces fatal panencephalitis, whereas low-dose low-titer rarely enters brain, generally avirulent. To determine genetic differences responsible,...

10.1128/jvi.03645-14 article EN cc-by Journal of Virology 2015-05-14

Next-Generation Sequencing (NGS) has transformed clinical histocompatibility laboratories through its capacity to provide accurate, high-throughput, high-resolution typing of Human Leukocyte Antigen (HLA) genes, which is critical for transplant safety and success. As this technology becomes widely used genotyping, now have an increased capability identify novel HLA alleles that previously would not be detected using traditional genotyping methods. Standard guidelines the verification...

10.3389/fgene.2023.1282834 article EN cc-by Frontiers in Genetics 2023-10-13

A bstract : Recent evidence suggests that cell‐free plasma DNA has potential use as a prognostic marker in many clinical settings. The aim of the present study was to evaluate role prediction outcome intensive treatment unit (ITU) patients. Cell‐free measured by real‐time polymerase chain reaction assay for β‐globin gene and SOFA score, APACHE II CRP concentrations, (duration stay, ventilation time, mortality) were noted 94 patients on admission ITU. median concentration ITU 5493 GE/mL this...

10.1196/annals.1318.036 article EN Annals of the New York Academy of Sciences 2004-06-01

<h3>Background</h3> COPD is a complex chronic disease with poorly understood pathogenesis. Integrative genomic approaches have the potential to elucidate biological networks underlying and lung function. We recently combined genome-wide genotyping gene expression in 1111 human specimens map quantitative trait loci (eQTL). <h3>Objective</h3> To determine causal associations between function-associated single nucleotide polymorphisms (SNPs) tissue changes our eQTL dataset. <h3>Methods</h3>...

10.1136/thoraxjnl-2014-205630 article EN Thorax 2014-09-02

The A7(74) strain of Semliki Forest virus (SFV; genus Alphavirus) is avirulent in adult mice, while the L10 virulent mice all ages. It has been previously demonstrated that this phenotypic difference associated with nonstructural protein 3 (nsP3). Consensus clones (designated SFV6) and A774wt) were used to construct a panel recombinant viruses. insertion nsP3 from A774wt into SFV6 backbone had minor effect on virulence resulting virus. Conversely, or replacement two copies resulted...

10.1128/jvi.01186-15 article EN Journal of Virology 2015-08-27

Abstract Background There is a need to improve personalized immunosuppression in organ transplantation reduce premature graft loss. More efficient biomarkers are needed better detect rejection, asymptomatic injury, and under-immunosuppression. Assessment of minimal necessary exposure guide tapering prevent immune activation also important. Donor-derived cell-free DNA (dd-cfDNA) has become available for comprehensive monitoring allograft integrity. A value proposition concept was applied...

10.1093/jalm/jfaa062 article EN The Journal of Applied Laboratory Medicine 2020-04-02

Advances in immunology support the understanding that precise structural epitopes on antibody-accessible region of HLA molecule determine antigenicity and challenge need for identity across full to minimize graft immunogenicity. Retrospective studies confirm quantitative measurement epitope-level mismatching between donor recipient is an informative marker rejection survival suggest prospective allocation organs based this principle may improve survival. Here we describe process rigorous...

10.1016/j.humimm.2022.01.002 article EN cc-by-nc-nd Human Immunology 2022-01-31

The optimal immunosuppression management in patients with a failed kidney transplant remains uncertain. This study analyzed the association of class II HLA eplet mismatches and maintenance allosensitization after graft failure well characterized cohort 21 who first transplant. A clinically meaningful increase cPRA this was defined as that resulted 50% reduction compatible donor pool measured from time until repeat transplantation, death, or end study. median at 12.13% (interquartile ranges =...

10.3389/fgene.2024.1383220 article EN cc-by Frontiers in Genetics 2024-04-04

K. R. Sherwood, M. W. Head, Walker, C. Smith, J. Ironside and Fazakerley (2011) Neuropathology Applied Neurobiology37, 633–642 RNA integrity in post mortem human variant Creutzfeldt–Jakob disease (vCJD) control brain tissue Aims: To determine premortem factors affecting quality yield of isolated from the unique archived material UK National Disease Surveillance Unit Brain Tissue Bank to compare this with no neurological disease. Methods: In parallel replicate, was prepared frontal...

10.1111/j.1365-2990.2011.01162.x article EN Neuropathology and Applied Neurobiology 2011-01-20

Once touted as the future of hip arthroplasty, metal-on-metal (MoM) bearing surfaces have fallen sharply from favor with emergence a strong body evidence demonstrating unacceptably high premature implant failure rates. The previously unpredictable development adverse local tissue reactions (ALTRs) has been substantive contributor to this. Although underlying pathophysiology these so-called "pseudotumors" is now well understood, fundamental predisposing patient risk factors remained...

10.1007/s11999.0000000000000028 article EN Clinical Orthopaedics and Related Research 2018-01-17

Abstract Compatibility for human leukocyte antigen (HLA) genes between transplant donors and recipients improves graft survival but prospective matching is rarely performed due to the vast heterogeneity of this gene complex. To reduce complexity, we have combined next-generation sequencing in silico mapping determine population frequencies probabilities 150 antibody-binding eplets across all 11 classical HLA 2000 ethnically heterogeneous renal patients donors. We show that are more common...

10.1038/s42003-021-01989-3 article EN cc-by Communications Biology 2021-05-14

Allogenic hematopoietic stem cell transplantation (allo-HSCT) is a life-saving treatment for various hematological disorders. The success of allo-HSCT depends on the engraftment donor cells and elimination recipient monitored through chimerism testing. We aimed to validate next-generation sequencing (NGS)-based assay monitoring emphasize importance including most prevalent subsets in proficiency testing (PT) programs. evaluated analytical performance NGS-based (AlloSeq-HCT CareDx) with panel...

10.3389/fgene.2023.1282947 article EN cc-by Frontiers in Genetics 2023-10-23

Background Recent advances in hardware and software enabled the use of artificial intelligence (AI) algorithms for analysis complex data a wide range daily-life cases. We aim to explore benefits applying AI specific case transplant nephrology: risk prediction severe posttransplant events. For first time, we combine multinational real-world data, which require legal technical protection measures. Objective The German-Canadian NephroCAGE consortium aims develop evaluate processes, tools,...

10.2196/48892 article EN cc-by JMIR Research Protocols 2023-12-22

To date there is limited data on the immune profile and outcomes of solid organ transplant recipients who encounter COVID-19 infection early post-transplant. Here we present a unique case where kidney recipient’s surgery coincided with positive SARS-CoV-2 test patient subsequently developed symptomatic perioperatively. We performed comprehensive immunological monitoring cellular, proteomic, serological changes during first 4 critical months post-infection. showed that continuation...

10.3389/fimmu.2021.753558 article EN cc-by Frontiers in Immunology 2021-09-22
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