573 results match your criteria: "University of Calgary and ‡Calgary Laboratory Services[Affiliation]"

A Novel HLA Class I Allele, HLA-C*12:424, Identified Using Next-Generation Sequencing.

HLA

November 2024

Histocompatibility Laboratory Services, American Red Cross, Philadelphia, Pennsylvania, USA.

Discovery of a novel HLA class I allele, HLA-C*12:424, identified using two NGS methods.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to evaluate whether higher scores on a knowledge test about blood transfusions are linked to more appropriate transfusion orders among healthcare providers.
  • Participants included postgraduate trainees and faculty who had recently prescribed transfusions, and their knowledge was assessed using an online questionnaire.
  • Results showed that while transfusion order appropriateness was high at 90.7%, there was a very weak correlation between knowledge test scores and order appropriateness, suggesting that other factors influence effective transfusion practices.*
View Article and Find Full Text PDF

Correction to: Pancreatic Adenosquamous Carcinoma Presenting as a Gastric Lesion.

ACG Case Rep J

September 2024

Division of Gastroenterology and Hepatology, University of Calgary, Calgary, Alberta, Canada.

[This corrects the article DOI: 10.14309/crj.0000000000001319.

View Article and Find Full Text PDF

The WHO research agenda for antimicrobial resistance (AMR) in human health has identified 40 research priorities to be addressed by the year 2030. These priorities focus on bacterial and fungal pathogens of crucial importance in addressing AMR, including drug-resistant pathogens causing tuberculosis. These research priorities encompass the entire people-centred journey, covering prevention, diagnosis, and treatment of antimicrobial-resistant infections, in addition to addressing the overarching knowledge gaps in AMR epidemiology, burden and drivers, policies and regulations, and awareness and education.

View Article and Find Full Text PDF

The extraction and processing of bitumen from the oil sands in northern Alberta, Canada generates large volumes of oil sands process-affected water (OSPW). OSPW contains a complex mixture of inorganic and organic compounds, including naphthenic acid fraction compounds (NAFCs) that are of particular concern due to their toxicity to aquatic organisms. Phytoremediation is a cost-effective, scalable approach that has the potential to remove NAFCs from OSPW and reduce OSPW toxicity.

View Article and Find Full Text PDF

Objective: Dedifferentiated endometrial carcinoma (DDEC) characterized by SWItch/Sucrose Non-Fermentable (SWI/SNF) complex inactivation is a highly aggressive type of endometrial cancer without effective systemic therapy options. Its uncommon nature and aggressive disease trajectory pose significant challenges for therapeutic progress. To address this obstacle, we focused on developing preclinical models tailored to this tumor type and established patient tumor-derived three-dimensional (3D) spheroid models of DDEC.

View Article and Find Full Text PDF

Pancreatic Adenosquamous Carcinoma Presenting as a Gastric Lesion.

ACG Case Rep J

March 2024

Division of Gastroenterology and Hepatology, University of Calgary, Calgary, Alberta, Canada.

Pancreatic adenosquamous carcinoma, an uncommon subtype of pancreatic adenocarcinoma, is characterized by an aggressive course and poor prognosis, with the only method of cure being surgical resection at the time of diagnosis. It is a complex condition, as it presents nonspecifically and remains indistinguishable from pancreatic adenocarcinoma without imaging techniques despite its aggressive nature. We report an atypical case of pancreatic adenosquamous carcinoma, presenting with marked anemia, found on endoscopy to have a gastric mass.

View Article and Find Full Text PDF

A recurrent missense variant in the E3 ubiquitin ligase substrate recognition subunit FEM1B causes a rare syndromic neurodevelopmental disorder.

Genet Med

June 2024

UMR1231 GAD, Inserm, Université Bourgogne-Franche Comté, Dijon, France; Unité Fonctionnelle Innovation en Diagnostic Génomique des Maladies Rares, Fédération Hospitalo-Universitaire-TRANSLAD, CHU Dijon Bourgogne, Dijon, France.

Article Synopsis
  • FEM1B is a key protein related to ubiquitin ligase complexes that influences various biological functions, including mitochondrial activity as a redox sensor, but its role in human disease is not well understood.
  • Researchers identified individuals with a specific genetic variant in FEM1B and conducted clinical evaluations, along with experiments using model systems to analyze the variant's effects.
  • The findings reveal that a recurrent mutation in FEM1B (p.(Arg126Gln)) leads to severe neurodevelopmental disorders and related physical abnormalities, suggesting that this variant causes dysfunctional activation of FEM1B that results in developmental issues.
View Article and Find Full Text PDF

Global guideline for the diagnosis and management of cryptococcosis: an initiative of the ECMM and ISHAM in cooperation with the ASM.

Lancet Infect Dis

August 2024

Division of Infectious Diseases, Department of Medicine, Duke University Medical Center, Durham, NC, USA; Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC, USA. Electronic address:

Cryptococcosis is a major worldwide disseminated invasive fungal infection. Cryptococcosis, particularly in its most lethal manifestation of cryptococcal meningitis, accounts for substantial mortality and morbidity. The breadth of the clinical cryptococcosis syndromes, the different patient types at-risk and affected, and the vastly disparate resource settings where clinicians practice pose a complex array of challenges.

View Article and Find Full Text PDF

Branchioma is an uncommon benign neoplasm with an adult male predominance, typically occurring in the lower neck region. Different names have been used for this entity in the past (ectopic hamartomatous thymoma, branchial anlage mixed tumor, thymic anlage tumor, biphenotypic branchioma), but currently, the term branchioma has been widely accepted. Branchioma is composed of endodermal and mesodermal lineage derivatives, in particular epithelial islands, spindle cells, and mature adipose tissue without preexistent thymic tissue or evidence of thymic differentiation.

View Article and Find Full Text PDF

Establishment and validation of preclinical models of SMARCA4-inactivated and ARID1A/ARID1B co-inactivated dedifferentiated endometrial carcinoma.

Gynecol Oncol

September 2023

Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada; Department of Laboratory Medicine and Pathology, Royal Alexandra Hospital, Edmonton, Alberta, Canada. Electronic address:

Objective: Dedifferentiated endometrial cancer (DDEC) is an uncommon and clinically highly aggressive subtype of endometrial cancer characterized by genomic inactivation of SWItch/Sucrose Non-Fermentable (SWI/SNF) complex protein. It responds poorly to conventional systemic treatment and its rapidly progressive clinical course limits the therapeutic windows to trial additional lines of therapies. This underscores a pressing need for biologically accurate preclinical tumor models to accelerate therapeutic development.

View Article and Find Full Text PDF

Salivary gland secretory carcinoma (SC), previously mammary analog SC, is a low-grade malignancy characterized by well-defined morphology and an immunohistochemical and genetic profile identical to SC of the breast. Translocation t(12;15)(p13;q25) resulting in the ETV6 :: NTRK3 gene fusion is a characteristic feature of SC along with S100 protein and mammaglobin immunopositivity. The spectrum of genetic alterations for SC continues to evolve.

View Article and Find Full Text PDF

Background: Candidemia is increasing in frequency and is associated with high mortality. We sought to determine the burden of illness, the population it affects and its resistance profile in our region.

Methods: The Calgary Zone (CZ) provides all care for residents of Calgary and surrounding communities (~ 1.

View Article and Find Full Text PDF
Article Synopsis
  • Serological assays for detecting SARS-CoV-2 antibodies are crucial for surveys and need thorough evaluations to ensure quality and accuracy in testing.
  • The study involved distributing plasma/serum samples from confirmed SARS-CoV-2 infections to various laboratories in Canada and the U.S. to assess their performance while keeping the results blinded.
  • Results showed that most high-throughput assays had excellent sensitivity, with Roche, Ortho, and Siemens achieving 100%, and overall, the serological tests used in public health settings displayed acceptable sensitivity and excellent specificity.
View Article and Find Full Text PDF

Multi-year comparison of VITEK® MS and 16S rRNA gene sequencing performance for the identification of rarely encountered anaerobes causing invasive human infections in a large Canadian region: can our laboratory abandon 16S rRNA gene sequencing?

Anaerobe

December 2022

Department of Pathology and Laboratory Medicine, Cummings School of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary Alta. T2N 4B1, Canada; Department of Medicine, Cummings School of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary Alta. T2N 4B1, Canada; Calgary Laboratory Services (now Alberta Precision Laboratories), Research Rd NW, Calgary Alberta T2L 2K8, 9-3535, Canada.

Background: Our large regional laboratory routinely provides a definitive identification (ID) for 800-1,200 anaerobic bacteria per annum that cause invasive human infections. An increasing number of isolates (i.e.

View Article and Find Full Text PDF

Enterococci are commensal bacteria of the gastrointestinal tract of humans, animals, and insects. They are also found in soil, water, and plant ecosystems. The presence of enterococci in human, animal, and environmental settings makes these bacteria ideal candidates to study antimicrobial resistance in the One-Health continuum.

View Article and Find Full Text PDF

Background: This study evaluated the performance of a novel fast broad range PCR and sequencing (FBR-PCR/S) assay for the improved diagnosis of invasive fungal disease (IFD) in high-risk patients in a large Canadian healthcare region.

Methods: A total of 114 clinical specimens (CS) including bronchoalveolar lavages (BALs) were prospectively tested from 107 patients over a 2-year period. Contrived BALs (n = 33) inoculated with known fungi pathogens were also tested to increase diversity.

View Article and Find Full Text PDF

Introduction: The reported ROM within TBSRTC categories varies widely and depends on several factors in the clinical care pathway for thyroid nodules, including sonographic risk stratification, cytology expertise, selection criteria for surgical resection, and definitions of malignancy used.

Methods: We present 5,867 consecutive thyroid FNAC and corresponding surgical pathology in the context of a comprehensive, single-payer health care system with centralized cytology and surgical pathology services for over 1.5 million inhabitants.

View Article and Find Full Text PDF

To study the predictors of mortality from nine major pathogens causing approximately 70% of cases over a 7-year period. A population-based surveillance cohort of all adult and pediatric patients in the Calgary Zone with an initial episode of bloodstream infections (BSI). The 1-year mortality was 29.

View Article and Find Full Text PDF
Article Synopsis
  • A collaborative study involving 25 laboratories assessed the effectiveness of a nontarget data acquisition (nDATA) workflow for screening pesticides in high moisture produce using advanced liquid chromatography-high-resolution mass spectrometry techniques.* -
  • The study employed a quick and efficient sample extraction method (QuEChERS) and focused on identifying 51 pesticides, ensuring accuracy through strict criteria for retention time and mass errors.* -
  • Results showed high consistency in pesticide elution profiles among laboratories and low false positive/negative rates (1.1%, 0.7%, and 0.1% respectively), indicating the potential for reliable routine analysis after further evaluations.*
View Article and Find Full Text PDF

The life of a laboratory requisition form: Patient compliance with clinical laboratory testing in a Canadian primary care health region.

Clin Biochem

January 2022

Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Canada; Alberta Precision Laboratories (formerly Calgary Laboratory Services), Calgary, Alberta, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Canada; Department of Family Medicine, Cumming School of Medicine, University of Calgary, Canada; Office of Undergraduate Medical Education, Cumming School of Medicine, University of Calgary, Canada. Electronic address:

Objective: To examine patient laboratory testing compliance by tracking time to submission of laboratory requisitions in Southern Alberta, Canada as part of a quality improvement initiative.

Methods: Data was collected retrospectively from patients from the Chinook Primary Care Network in Alberta, Canada, who received a laboratory requisition consisting of a complete blood count (CBC) test order between September 1, 2016 and August 31, 2017. To allow for all laboratory requisitions created to be submitted within one year, the study collection period was from September 1, 2016 to August 31, 2018.

View Article and Find Full Text PDF

Canadian ROS proto-oncogene 1 study (CROS) for multi-institutional implementation of ROS1 testing in non-small cell lung cancer.

Lung Cancer

October 2021

Laboratory Medicine Program, University Health Network, Toronto, ON, Canada; Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada.

Patients with non-small cell lung cancer (NSCLC) harboring ROS proto-oncogene 1 (ROS1) gene rearrangements show dramatic response to the tyrosine kinase inhibitor (TKI) crizotinib. Current best practice guidelines recommend that all advanced stage non-squamous NSCLC patients be also tested for ROS1 gene rearrangements. Several studies have suggested that ROS1 immunohistochemistry (IHC) using the D4D6 antibody may be used to screen for ROS1 fusion positive lung cancers, with assays showing high sensitivity but moderate to high specificity.

View Article and Find Full Text PDF

Bitumen extraction from surface-mined oil sands deposits results in the accumulation of large volumes of oil sands process-affected water (OSPW). Naphthenic acids (NAs) are primary contributors to OSPW toxicity and have been a focal point for the development of OSPW remediation strategies. Phytoremediation is an approach that utilizes plants and their associated microbes to remediate contaminants from soil and groundwater.

View Article and Find Full Text PDF

Factors Associated with Hyponatremia in Patients Newly Prescribed Citalopram: A Retrospective Observational Study.

Drugs Real World Outcomes

December 2021

Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, Canada.

Background: Hyponatremia is a common and under-recognized adverse drug reaction of selective serotonin re-uptake inhibitor (SSRI) antidepressants. Despite its clinical importance, there are few large-scale studies on the factors associated with hyponatremia.

Objective: The aim of this study was to determine the incidence of hyponatremia and to identify patient factors associated with hyponatremia in a large, population-based cohort initiating new prescriptions for citalopram.

View Article and Find Full Text PDF

The importance of Escherichia coli clonal complex 10 and ST131 among Tanzanian patients on antimicrobial resistance surveillance programs.

Eur J Clin Microbiol Infect Dis

May 2021

Department of Microbiology, Immunology and Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.

The objective of this study was to characterize antimicrobial resistance (AMR) of WHO priority 1 critical pathogen (extrapathogenic Escherichia coli (ExPEC), sequence types (STs), and ST131 clades from patients in Tanzania so as to guide specific antimicrobial therapies and preventive measures. A total of 143 ExPEC strains (128 from pregnant women with urinary tract infections and 15 from children with blood stream infections) were collected between March 2016 and October 2017. These were characterized into ST-fimH clones by a 7-single nucleotide polymorphism quantitative polymerase chain reaction (7-SNP qPCR) and gene sequencing, and to ST131 clades by multiplex PCR.

View Article and Find Full Text PDF