Publications by authors named "Topper E"

Background: Aging-related comorbidities are more common in people with human immunodeficiency virus (HIV) compared to people without HIV. The gut microbiome may play a role in healthy aging; however, this relationship remains unexplored in the context of HIV.

Methods: 16S rRNA gene sequencing was conducted on stool from 1409 women (69% with HIV; 2304 samples) and 990 men (54% with HIV; 1008 samples) in the MACS/WIHS Combined Cohort Study.

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Background: Interpersonal violence (IPV) affects half of women living with HIV (WLHIV) in the United States and has important consequences for mental health and HIV outcomes. Although different types of stigmas (eg, HIV- or sexual identity-related) are associated with increased risk of IPV, the relationship between poverty-related stigma and IPV is unclear, even though poverty frequently co-occurs with IPV.

Methods: Data from up to 4 annual visits (2016-2020) were collected from 374 WLHIV enrolled in a substudy of the Women's Interagency HIV Study (now known as Multicenter AIDS Cohort Study/Women's Interagency HIV Study Combined Cohort Study) at 4 sites across the United States.

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Background: In the US, Women, especially Black and Latina women living in disadvantaged environments, are disproportionally affected by HIV. Women living with HIV (WLHIV) have higher rates of suboptimal antiretroviral therapy (ART) adherence, and detectable viral load (VL). Experiences of intersectional poverty, HIV, gender, and racial stigmas may increase the rates of detectable VL through suboptimal ART adherence.

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In Brief: Bovine sperm and seminal plasma (SP) proteoform atlas was characterized using top-down proteomics. Specific post-translational modifications and protein truncations correlated with semen freezability, with potential links to sperm functional processes.

Abstract: Top-down proteomics was employed to construct a proteoform atlas of sperm and SP from bulls with low semen freezability (LF) and high semen freezability (HF).

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Background: Integrase strand transfer inhibitors (INSTIs) and the menopausal transition have separately been associated with body composition changes in women with HIV (WWH), but their interaction is unknown.

Methods: From 2006-2019, 1131 non-pregnant WWH with viral suppression [(419 who switched to INSTI (INSTI+); 712 who did not switch (INSTI-)] and 887 women without HIV (WWOH) from the Women's Interagency HIV Study were included. Mixed effect models were used to evaluate change in waist circumference (WC) and BMI by menopausal phase defined using anti-Müllerian hormone, a biomarker of ovarian reserve.

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Article Synopsis
  • A study investigated long-term body weight changes in people with HIV (PWH) who switched to antiretroviral therapies containing integrase strand-transfer inhibitors (INSTIs), comparing them with those on non-INSTI therapies and people without HIV (PWOH).
  • The analysis included 3464 participants and revealed that women experienced significantly greater weight gain and increases in hip and thigh circumference after switching to INSTIs compared to men, with women gaining +3.0 kg and men +1.8 kg over 5 years.
  • The findings suggest a 2-fold higher weight change in women versus men following the switch to INSTIs, although the long-term health implications of this difference are still uncertain.
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  • The study investigates how substance use impacts menopausal symptoms in people living with and without HIV in the US over a 12-year period.
  • Data from the Women’s Interagency HIV Study involved self-reported information on menopausal symptoms, substance use, and demographic data analyzed using logistic regression.
  • Findings reveal that current heavy alcohol, cumulative tobacco, and marijuana use are linked to increased frequency of vasomotor symptoms, while heavy alcohol and opioid use are associated with mood symptoms, highlighting the need for targeted interventions during menopause.
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Background: Women living with HIV (WLHIV) are particularly vulnerable to poor employment outcomes, impacting their socioeconomic independence and personal sense of empowerment.

Objective: This article presents the results of a mixed methods study, which examined the personal, clinical, and socioeconomic contexts associated with employment and occupational productivity among employed WLHIV (n = 164) in the Southern United States.

Methods: The Stanford Presenteeism Scale-6 was used to assess the perceived impact of HIV disease on the ability to maintain focus and complete tasks at work.

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  • A survey of 103 reproductive-aged women with HIV in the U.S. South was conducted after the approval of long-acting injectable (LAI) cabotegravir/rilpivirine.
  • About two-thirds of the participants indicated they were open to trying LAI antiretroviral therapy (ART).
  • Most women preferred LAI over daily oral ART and had few concerns about how using LAI-ART might affect their reproductive health.
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  • Estrogens might help protect the gut barrier and lower immune activation in women with HIV, especially during the menopausal transition.
  • A study measured gut-related biomarkers in 77 women, with 43 having HIV, over approximately 13 years to understand the effects of menopause and estradiol levels.
  • Results showed that HIV-positive women had increased immune activation during menopause, with a decrease in activation after the transition, suggesting that lower estrogen levels could contribute to this heightened immune response.
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Background: Steatohepatitis is common in persons living with HIV and may be associated with gut microbial translocation (MT). However, few studies have evaluated the gut-liver axis in persons living with HIV. In the Women's Interagency HIV Study, we examined the associations of HIV and circulating biomarkers linked to MT and gut damage using the FibroScan-aspartate aminotransferase (FAST) score, a noninvasive surrogate for steatohepatitis with advanced fibrosis.

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Objective: This study aimed to identify menopause-related gut microbial features, as well as their related metabolites and inflammatory protein markers, and link with cardiometabolic risk factors in women with and without HIV.

Methods: In the Women's Interagency HIV Study, we performed shotgun metagenomic sequencing on 696 stool samples from 446 participants (67% women with HIV), and quantified plasma metabolomics and serum proteomics in a subset (~86%). We examined the associations of menopause (postmenopausal vs premenopausal) with gut microbial features in a cross-sectional repeated-measures design and further evaluated those features in relation to metabolites, proteins, and cardiometabolic risk factors.

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Article Synopsis
  • - The study examines how menopause affects cardiovascular risk in women with HIV, focusing on changes in carotid artery intima-media thickness (CIMT) over time.
  • - Among the 979 women studied from 2004 to 2019, those with HIV who went through menopause showed a significant increase in CIMT, particularly during the menopausal transition phase.
  • - The findings suggest that menopause may speed up the development of subclinical atherosclerosis in women with HIV, highlighting a need for increased awareness and monitoring during this period.
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  • The study examined the relationship between sex hormones, gut microbiome, and cardiovascular risk in postmenopausal women, particularly those with HIV.
  • Researchers measured 15 sex hormones and analyzed stool samples from 197 women, highlighting associations between hormone levels and microbiome diversity and composition.
  • Findings suggest that certain hormones, especially estrogens, may enhance microbiome diversity and are linked to lower risks of carotid artery plaque, indicating the gut microbiome's potential role in cardiovascular protection related to estrogen.
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Importance: Despite aging-related comorbidities representing a growing threat to quality-of-life and mortality among persons with HIV (PWH), clinical guidance for comorbidity screening and prevention is lacking. Understanding comorbidity distribution and severity by sex and gender is essential to informing guidelines for promoting healthy aging in adults with HIV.

Objective: To assess the association of human immunodeficiency virus on the burden of aging-related comorbidities among US adults in the modern treatment era.

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  • The study investigates the relationship between tryptophan (TRP) metabolism, gut bacteria, and carotid artery plaque in women, both with and without HIV infection.
  • It assesses various plasma TRP metabolites and their associations with plaque formation, discovering that higher levels of kynurenic acid (KYNA) are linked to increased plaque, while indole-3-propionate (IPA) shows a protective effect.
  • Key gut bacteria associated with IPA were identified, indicating that certain gut microbiome profiles may play a beneficial role in cardiovascular health, particularly in the context of HIV.
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  • This study examined the cardiovascular health of women with HIV compared to those without, focusing on various heart conditions using echocardiography in the Women's Interagency HIV Study.
  • Of the 1,654 participants, about 70% had HIV, with findings revealing a higher risk of left ventricular systolic dysfunction (LVSD) in women with HIV, particularly as their CD4+ count decreased.
  • The results suggest that while women with HIV do have an increased risk for certain heart issues, especially at lower immune cell counts, it emphasizes the need for both heart health monitoring and HIV management in this population.
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  • Many women living with HIV face challenges in sticking to their daily oral medications, prompting the need for accessible alternatives like long-acting injectable therapies.
  • A new web-based decision aid called i.ART+support (i.ARTs) is being developed to help these women and their healthcare providers make informed choices between oral and injectable treatments.
  • The study will take place in three phases, including data collection, focus groups for content refinement, and a randomized trial to assess the effectiveness and user-friendliness of the i.ARTs tool among 180 women in Miami.
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  • The study investigates the differences in CD4 + T-cell glucose metabolism between HIV-positive women with diabetes and those without, focusing on how diabetes impacts immune dysfunction related to HIV.* -
  • Using various techniques like flow cytometry and gene expression analysis, researchers found that HIV-positive women with diabetes had significantly higher levels of a metabolic marker (GLUT1) and elevated gene expression related to glucose metabolism.* -
  • The findings suggest that treating diabetes in HIV-positive women may help improve the metabolic dysfunction of CD4 + T cells, highlighting the interconnectedness of these two diseases.*
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Low fertility is the single most important factor limiting livestock reproductive performance, adversely affecting the cattle industry and causing millions of dollars of economic loss. In the livestock industry, male fertility is of crucial importance for the reproductive performance of livestock. However, there is a lack of reliable biomarkers to predict bull fertility in artificial insemination service.

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Facilitated contemplation of artwork has been found to be a valuable tool in the spiritual care encounter with adult patients. No reports were found on art-contemplation as a tool in the spiritual care of the pediatric population. This article is a preliminary report of facilitated art-contemplation as a portal to spiritual care encounters with hospitalized children and adolescents, their families and the staff.

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The objective of the current study was to determine the fatty acid composition of sperm from Holstein bulls with different freezability (Good and Poor; n = 12). Fatty acids were extracted from frozen sperm in 1:2 (v/v) chloroform-methanol solvent, fractionated into neutral and polar fractions, and composition determined by gas chromatography-mass spectrometry. Thirty-four fatty acids were quantified and their concentrations and percentages within each lipid fraction were calculated.

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The objective of this study was to ascertain the cellular and functional parameters as well as ROS related changes in sperm from bulls with varied sperm freezability phenotypes. Using principal component analysis (PCA), the variables were reduced to two principal components, of which PC1 explained 48% of the variance, and PC2 explained 24% of the variance, and clustered animals into two distinct groups of good freezability (GF) and poor freezability (PF). In ROS associated pathophysiology, there were more dead superoxide anion positive (Dead SO+) sperm in GF bulls than those in PF (15.

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The present study investigated the seminal plasma proteome of Holstein bulls with low (LF; n = 6) and high (HF; n = 8) sperm freezability. The percentage of viable frozen-thawed sperm (%ViableSperm) determined by flow cytometry varied from -2.2 in LF to + 7.

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Sperm cryopreservation is an important technique for fertility management, but post-thaw viability of sperm differs among breeding bulls. With metabolites being the end products of various metabolic pathways, the contributions of seminal plasma metabolites to sperm cryopreservation are still unknown. These gaps in the knowledge base are concerning because they prevent advances in the fundamental science of cryobiology and improvement of bull fertility.

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