Publications by authors named "Hendrix C"

End-user feedback early in product development is important for optimizing multipurpose prevention technologies for HIV and pregnancy prevention. We evaluated the acceptability of the 90-day dapivirine levonorgestrel ring (DPV-LNG ring) used for 14 days compared to a dapivirine-only ring (DVR-200mg) in MTN-030/IPM 041 (n = 23), and when used for 90 days cyclically or continuously in MTN-044/IPM 053/CCN019 (n = 25). We enrolled healthy, non-pregnant, HIV-negative women aged 18-45 in Pittsburgh, PA and Birmingham, AL (MTN-030 only).

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Background: On demand, topical PrEP is desired by those preferring episodic, nonsystemic PrEP. PC-1005 gel (MIV-150, zinc, and carrageenan) exhibits in vitro antiviral HIV-1, human papillomavirus (HPV), and herpes simplex virus type 2 (HSV-2) activity, attractive for a multipurpose prevention technology candidate. We evaluated the safety, pharmacokinetics, and antiviral effect of rectally applied PC-1005.

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Background: Tibial shaft fractures are common, causing substantial morbidity. Intramedullary nailing offers advantages but often leads to anterior knee pain and functional issues.

Methods: Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we conducted a systematic review on outcomes for different surgical approaches-suprapatellar (SP), infrapatellar (IP), medial parapatellar (MPP), and lateral parapatellar (LPP).

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This review summarizes recent findings on stress-related programming of brain development , with an emphasis on situating findings within the mothers' broader psychosocial experiences. Meta-analyses of observational studies on prenatal stress exposure indicate the direction and size of effects on child neurodevelopment are heterogeneous across studies. Inspired by lifespan and topological frameworks of adversity, we conceptualize individual variation in mothers' lived experience during and prior to pregnancy as a key determinant of these heterogeneous effects across populations.

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Article Synopsis
  • Introduction of long-acting injectable cabotegravir (CAB-LA) for HIV prevention showed effectiveness, and this study examines its safety and pharmacokinetics in pregnant women participating in the HPTN 084 trial during a blinded period.
  • In the study, pregnant participants were divided into two groups receiving either CAB-LA or TDF/FTC, with careful monitoring of pregnancy outcomes and maternal adverse events, finding that there was no significant difference in adverse event rates or poor pregnancy outcomes between the two groups.
  • The analysis revealed a total of 57 confirmed pregnancies over 3845 person-years, with 81% resulting in live births, and the study concluded that CAB-LA did not result in significantly different safety or outcomes
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Background: Pregnant women are vulnerable to HIV acquisition. Oral HIV pre-exposure prophylaxis (PrEP) is safe and effective for use during pregnancy. We describe PrEP adherence among pregnant women using multiple measures.

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Objective: Traumatic brain injuries (TBIs) are a leading cause of death and disability worldwide. Establishing TBI guidelines is crucial for prehospital management. Civilian medical practices are often influenced by military trauma guidelines.

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Multiple studies suggest that Parkinson's disease (PD) is associated with changes in neuronal activity throughout the basal ganglia-thalamocortical motor circuit. There are limited electrophysiological data, however, describing how parkinsonism impacts neuronal activity in the pre-supplementary motor area (pre-SMA), an area in medial frontal cortex involved in movement planning and motor control. In this study, single unit activity was recorded in the pre-SMA of two non-human primates during a visually cued reaching task in both the naive and parkinsonian state using the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) model of parkinsonism.

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Article Synopsis
  • The study investigates the impact of different obesity levels on complication rates for patients undergoing anterior cervical discectomy with fusion (ACDF), using a large national database from 2011 to 2020.
  • It categorizes patients into four BMI groups (nonobese and three obesity classes) and assesses various demographic and health-related risk factors for perioperative complications.
  • The analysis involved over 64,000 patients, aiming to better understand how obesity correlates to surgical outcomes in a diverse patient population.
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Introduction: Trauma remains a significantly underfunded area of medical research despite its status as a leading cause of death and substantial economic burden in the United States. This study explores the disparity in trauma research funding, focusing on Oklahoma compared to neighboring and populous states.

Methods: Using data from the Centers for Disease Control and Prevention (CDC)'s Web-based Injury Statistics Query and Reporting System (WISQARS™) and the National Institutes of Health (NIH)'s RePORT databases, we analyzed age-adjusted years of potential life lost (YPLL) due to trauma and corresponding NIH funding across different states and nationally.

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Unlabelled: HPTN 084 demonstrated the superiority of long-acting injectable cabotegravir (CAB-LA) compared with daily oral tenofovir disoproxil fumarate-emtricitabine (F/TDF) for HIV prevention in women. CAB-LA (600 mg) or placebo injections were administered 4 weeks after an initial dose (loading dose) and every 2 months (Q2M) thereafter; this is the approved regimen. Participants experienced both loading dose and Q2M delays during the trial.

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HIV prevention with pre-exposure prophylaxis (PrEP) constitutes a major pillar in fighting the ongoing epidemic. While daily oral PrEP adherence may be challenging, long-acting (LA-)PrEP in oral or implant formulations could overcome frequent dosing with convenient administration. The novel drug islatravir (ISL) may be suitable for LA-PrEP, but dose-dependent reductions in T cell and lymphocyte counts were observed at high doses.

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Introduction: Open surgical resection involves extended recovery and soft-tissue damage, prompting the development and increasing adoption of less invasive techniques. While Mast Quadrant tubular retractors have been used in spine fusion and endoscopic procedures, their application in minimally invasive tumor resections has not been widely discussed. This report showcases the use of a Mast Quadrant tubular retractor for the minimally invasive resection of a lumbar vertebral body osteoid osteoma.

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Preterm birth poses a major public health challenge, with significant and heterogeneous developmental impacts. Latent profile analysis was applied to the National Institutes of Health Toolbox performance of 1891 healthy prematurely born children from the Adolescent Brain and Cognitive Development study (970 boys, 921 girls; 10.00 ± 0.

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Background: Hip fracture is a major health concern and the use of an indwelling urinary catheter (IUC) constitutes a significant burden on elderly patients undergoing hip fracture surgery.

Local Problem: The institution had a high rate of urinary tract infection (UTI) and IUC reinsertion after hip fracture surgery.

Methods: A pre/post-implementation design was used for this quality improvement initiative.

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Adherence drives efficacy in PrEP clinical trials. We compared drug concentrations and self-reported adherence in HPTN069/ACTG5305, a double-blinded, randomized trial of the safety and tolerability of candidate PrEP regimens that included maraviroc (MVC), tenofovir (TDF), and emtricitabine (FTC). Plasma drug concentrations and self-reported adherence by computer-assisted self-interview (CASI) were assessed at study weeks 24 and 48.

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Background: Although anterior cervical discectomy and fusion (ACDF) procedures for cervical spine disease have been increasing amid a growing population of patients with kidney dysfunction, there is a scarcity of literature focusing on kidney dysfunction as a risk-factor for post-operative ACDF complications. The purpose is to evaluate the differential impact of kidney dysfunction on perioperative outcomes including surgical and medical complications, extended length of hospital stay (LOS), and death within 30 days following ACDF.

Patient Sample: This was a retrospective cohort study of prospectively collected data using the American College of Surgeons National Surgical Quality Improvement Program database to identify patients who had undergone an elective ACDF procedure between 2011-2021 using Current Procedural Terminology code 22551.

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Normal pressure hydrocephalus (NPH) is a syndrome that characteristically presents with progressive gait impairment, cognitive deficits, and urinary urgency or incontinence. We present a case of a 54-year-old male with a past medical history of alcohol use and no primary care provider with new-onset auditory hallucinations. The patient was found to have a marked enlargement of the supratentorial and infratentorial ventricles on both computed tomography (CT) and magnetic resonance imaging (MRI) and an opening pressure of 21 on the lumbar puncture, concerning for NPH.

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The annual meeting for the Intermountain Branch was held in April 2024 on the campus of Brigham Young University. There were 127 branch members from Utah, Idaho, and Nevada who attended the meeting and were composed of undergraduate students, graduate or medical students, and faculty. This report highlights the diversity of, and the emerging trends in, the research conducted by American Society for Microbiology members in the Intermountain Branch.

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We aim to investigate the relationships between the population characteristics of patients with Alzheimer's Disease (AD) and their Healthcare Utilization (HU) during the COVID-19 pandemic. Electronic health records (EHRs) were utilized. The study sample comprised those with ICD-10 codes G30.

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Background Context: Although anterior cervical discectomy and fusion (ACDF) procedures for cervical spine disease have been increasing amid a growing diabetic patient population, there is a paucity of literature focusing on insulin-dependence as a risk-factor for postoperative ACDF complications.

Purpose: To evaluate the differential impact of insulin dependence on perioperative outcomes including total length of stay, surgical, and medical complications within thirty days following ACDF.

Study Design/setting: A retrospective cohort, large multicenter database study.

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Background: Vaginal rings formulated to deliver two drugs simultaneously have potential as user-controlled, long-acting methods for dual prevention of HIV and pregnancy.

Methods: Two phase 1 randomized trials (MTN-030/IPM 041 and MTN-044/IPM 053/CCN019) respectively enrolled 24 and 25 healthy, HIV-negative participants to evaluate safety, pharmacokinetics, and vaginal bleeding associated with use of a vaginal ring containing 200mg dapivirine (DPV) and 320mg levonorgestrel (LNG) designed for 90-day use. MTN-030/IPM 041 compared the DPV/LNG ring to a DPV-only ring (200mg) over 14 days of use.

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