Publications by authors named "Weir S"

The World Health Organization recommends that all blood donations be screened for transfusion transmissible infections; these data are currently not incorporated into national disease surveillance efforts. We set out to use routinely collected data from blood donors in Blantyre district, Malawi to explore HIV and syphilis prevalence and identify sero-conversions among repeat donors. We conducted a retrospective cohort analysis of blood donation data collected by the Malawi Blood Transfusion Service from 2015 to 2021.

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Parabens are alkyl esters of p-hydroxybenzoic acid that are commonly used as preservatives in personal care products such as cosmetics. Recent studies have revealed the presence of parabens in surface and tap water because of their use as disinfection products; however, little is known about their occurrence in biological samples and their bioaccumulation potential, particularly in raptor birds known as sentinels for pollutant detection. We examined the occurrence and tissue distribution of parabens, their metabolites, and halogenated byproducts in the liver, kidney, brain, and muscle of birds of prey from Texas and North Carolina (USA).

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Background: In 2017, Blantyre district had the highest adult HIV prevalence in Malawi (17.7%) and lowest viral suppression (60%). In response, the Ministry of Health expanded prevention and treatment services.

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Advanced epithelial ovarian cancer (EOC) survival rates are dishearteningly low, with ~25% surviving beyond 5 years. Evidence suggests that cancer stem cells contribute to acquired chemoresistance and tumor recurrence. Here, we show that IRAK1 is upregulated in EOC tissues, and enhanced expression correlates with poorer overall survival.

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In this paper we investigate the effects of varying cation valency and concentration on the rheology of entangled DNA solutions. We show that monovalent cations moderately increase the viscoelasticty of the solutions mainly by stabilising linear concatenation of DNA "monomers" hybridisation of their sticky ends. On the contrary, divalent cations have a far more complex and dramatic effect on the rheology of the solution and we observe evidence of inter-molecular DNA-DNA bridging by Mg.

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Background: The HIV epidemic in Ghana is characterized as a mix of a low-level generalized epidemic with significant contributions from transmission among female sex workers (FSW) and their clients. This study seeks to identify and describe key characteristics and sexual behaviors of FSW and estimate the prevalence of HIV, syphilis, gonorrhea, chlamydia, and hepatitis B virus (HBV) among FSW in Ghana.

Method: A total of 7,000 FSW were recruited for the study using Time Location Sampling (TLS) approach with 5,990 (85.

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Cardiovascular risk factors such as hypertension are common and largely uncontrolled in Malawi. In this low-resource setting, Community Health Workers (CHWs) can increase access to home-based blood pressure (BP) monitoring. The purpose of this study is to evaluate the effectiveness of a CHW training focused on BP monitoring and referral criteria, as well as the accuracy of referral decision-making and documentation.

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A key facet of alcohol use disorder is continuing to drink alcohol despite negative consequences (so called "aversion-resistant drinking"). In this study, we sought to assess the degree to which head-fixed mice exhibit aversion-resistant drinking and to leverage behavioral analysis techniques available in head-fixture to relate non-consummatory behaviors to aversion-resistant drinking. We assessed aversion-resistant drinking in head-fixed female and male C57BL/6J mice.

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A key facet of alcohol use disorder is continuing to drink alcohol despite negative consequences (so called "aversion-resistant drinking"). In this study, we sought to assess the degree to which head-fixed mice exhibit aversion-resistant drinking and to leverage behavioral analysis techniques available in head-fixture to relate non-consummatory behaviors to aversion-resistant drinking. We assessed aversion-resistant drinking in head-fixed female and male C57BL/6 J mice.

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Objectives: Allied dental practitioners increasingly encounter demands specific to treating patients with special needs and disabilities. New standards by the Commission on Dental Accreditation require dental and allied dental graduates to have didactic and skill-based competencies to ensure awareness of and effective treatment and recommendations for these patients. This study sought to determine if adding a special needs simulation activity into allied dental students' curriculum would increase the student's awareness of and comfort level when treating patients with special needs.

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T-cell receptor stimulation triggers cytosolic Ca signaling by inositol-1,4,5-trisphosphate (IP)-mediated Ca release from the endoplasmic reticulum (ER) and Ca entry through Ca release-activated Ca (CRAC) channels gated by ER-located stromal-interacting molecules (STIM1/2). Physiologically, cytosolic Ca signaling manifests as regenerative Ca oscillations, which are critical for nuclear factor of activated T-cells-mediated transcription. In most cells, Ca oscillations are thought to originate from IP receptor-mediated Ca release, with CRAC channels indirectly sustaining them through ER refilling.

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In the Lake Victoria region of East Africa, little is known about delays between tuberculosis (TB) symptom onset and presentation at a clinic. Associations between clinic presentation delay and TB treatment outcomes are also poorly understood. In 2019, we abstracted data from routine TB treatment records for all adults (n = 776) initiating TB treatment in a 6-month period across 12 health facilities near Lake Victoria.

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Importance: While a gender pay gap in medicine has been well documented, relatively little research has addressed mechanisms that mediate gender differences in referral income for specialists.

Objective: To examine gender-based disparities in medical and surgical specialist referrals in Ontario, Canada.

Design, Setting, And Participants: This cross-sectional study included referrals for specialist care ascertained from Ontario Health Insurance Plan physician billings for fiscal year 2018 to 2019.

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Racial disparities in pain management for chronic diseases persist in the United States. However, no research exists assessing racial disparities in related pain. This study aimed to identify racial differences in hidradenitis suppurativa (HS)-related pain scores.

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We report a 5-single nucleotide polymorphism cluster of Enteriditis in England, part of a global cluster of Enteritidis ST11. Forty-seven confirmed cases have been investigated of whom 25 were linked to a restaurant. In addition, there were 18 probable cases with restaurant exposure.

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Interferons (IFNs) have demonstrated therapeutic potential in various skin cancers, specifically squamous cell carcinoma (SCC), basal cell carcinoma (BCC), and melanoma. The precise mechanism through which type I IFNs exert their antitumor effects in skin cancers is still being studied. However, intralesional type I IFN can be used as an alternative to surgery for select patient populations, and high-dose systemic IFN therapy has been shown to be promising in patients with operable high-risk or metastatic melanoma.

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Idiopathic facial aseptic granuloma (IFG) is a benign condition that typically presents as asymptomatic nodules on the cheeks of pediatric patients. The underlying etiology of IFG remains unknown; however, increasing evidence supports the theory that IFG may lie on a spectrum with childhood rosacea. Typically, biopsy and excision are deferred due to the benign nature, high spontaneous resolution rates, and cosmetically sensitive location.

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Hidradenitis suppurativa (HS), a chronic inflammatory disease characterized by painful abscesses and nodules, has limited effective treatment options. However, adjuncts to standard therapeutics such as dietary modifications have been increasingly investigated in recent years. This comprehensive review aimed to analyze the literature concerning the relationship between HS and 28 essential vitamins and minerals.

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Geographic mobility may disrupt continuity of care and contribute to poor clinical outcomes among people receiving treatment for tuberculosis (TB). This may occur especially where health services are not well coordinated across international borders, particularly in lower and middle income country settings. In this work, we describe mobility and the relationship between mobility and unfavorable TB treatment outcomes (i.

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Article Synopsis
  • The study aimed to identify high-risk social venues in Uganda that contribute to HIV transmission among young workers (ages 15-24) and assess the availability of HIV prevention services within these venues.
  • Four clusters of social venues were identified, with Cluster 1 being alcohol-serving sex work venues offering on-site sex, which showed the highest HIV vulnerability among workers.
  • The findings suggest that targeted HIV prevention interventions should focus on Cluster 1 venues, as only 37% of them reported having any HIV prevention services in the past year.
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The perinucleolar compartment (PNC) is a small nuclear body that plays important role in tumorigenesis. PNC prevalence correlates with poor prognosis and cancer metastasis. Its expression in pediatric Ewing sarcoma (EWS) has not previously been documented.

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Obesity is a risk factor for severe disease and mortality for both influenza and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. While previous studies show that individuals with obesity generate antibody responses following influenza vaccination, infection rates within the obese group were twice as high as those in the healthy-weight group. The repertoire of antibodies raised against influenza viruses following previous vaccinations and/or natural exposures is referred to here as baseline immune history (BIH).

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Pancreatic ductal adenocarcinoma (PDAC) is the primary reason for cancer-related deaths in the US. Genetic mutations, drug resistance, the involvement of multiple signaling pathways, cancer stem cells (CSCs), and desmoplastic stroma, which hinders drug penetrance, contribute to poor chemotherapeutic efficacy. Hence, there is a need to identify novel drugs with improved delivery to improve treatment outcomes.

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