2,698 results match your criteria: " Brown University[Affiliation]"

The Impact of Ageing on Diaphragm Function and Maximal Inspiratory Pressure: A Cross-Sectional Ultrasound Study.

Diagnostics (Basel)

January 2025

Department of General Medicine, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo, Bunkyo-ku, Tokyo 113-8510, Japan.

: The effects of ageing on the diaphragm are unclear. This study examined the association between ageing and diaphragm thickness, thickening fraction (TF), and diaphragm excursion (DE) as assessed by ultrasonography after adjusting for other factors. The relationship between these parameters and maximal inspiratory pressure (MIP) was also investigated.

View Article and Find Full Text PDF

Aims: We evaluated the safety, efficacy, and patient adherence to oral ANS-6637, a selective, reversible inhibitor of aldehyde dehydrogenase 2 (ALDH2), for treating alcohol use disorder (AUD).

Methods: A 3-arm, double-blind, randomized, proof-of-concept human laboratory study embedded in a 5-week multisite clinical trial tested 200 mg and 600 mg daily doses of ANS-6637 compared to placebo in treatment-seeking adults with AUD. After 1 week of medication, participants completed an alcohol cue reactivity session.

View Article and Find Full Text PDF
Article Synopsis
  • Alzheimer's disease (AD) is characterized by various pathological features including amyloid-β deposition and tau hyperphosphorylation, with cerebral microvascular dysfunction likely playing a role in its progression.
  • Researchers investigated the microvascular responses and potassium channel activity in an AD mouse model induced by streptozotocin (STZ), using behavioral tests and cellular assays.
  • The study found that STZ-AD mice showed poorer performance on behavioral tests and had impaired microvascular responses, which were further deteriorated by exposure to soluble Aβ, indicating a potential link between microvascular dysfunction and AD pathology.
View Article and Find Full Text PDF

Background: HIV continues to disproportionately impact men who have sex with men (MSM) in the United States (US). Pre-exposure prophylaxis (PrEP) is effective, but disparities persist. Limited studies have conducted systematic evaluations of social determinants of health (SDOH) and their effects on PrEP persistence among MSM.

View Article and Find Full Text PDF

Purpose: To compare the odds of patellofemoral instability events requiring subsequent surgery and revision surgical intervention in patients with joint hypermobility syndromes (JHS) to that of a matched cohort.

Methods: This is a retrospective cohort study using the PearlDiver Mariner Database. Records were queried between 2010 and 2021 with a diagnosis of JHS, including Ehlers-Danlos syndrome (EDS) and Marfan syndrome.

View Article and Find Full Text PDF

Introduction: Medication regimen complexity may be an important risk factor for adverse outcomes in older adults with heart failure. However, increasing complexity is often necessary when prescribing guideline-directed medical therapy at the time of a heart failure hospitalization. We sought to determine whether increased medication regimen complexity following a heart failure hospitalization was associated with worse post-hospitalization outcomes.

View Article and Find Full Text PDF

Introduction: Early-onset Alzheimer's disease (EOAD) manifests prior to the age of 65, and affects 4%-8% of patients with Alzheimer's disease (AD). The current analyses sought to examine longitudinal cognitive trajectories of participants with early-onset dementia.

Methods: Data from 307 cognitively normal (CN) volunteer participants and those with amyloid-positive EOAD or amyloid-negative cognitive impairment (EOnonAD) were compared.

View Article and Find Full Text PDF

Introduction: Early-onset Alzheimer's disease (EOAD) and late-onset Alzheimer's disease (LOAD) share similar amyloid etiology, but evidence from smaller-scale studies suggests that they manifest differently clinically. Current analyses sought to contrast the cognitive profiles of EOAD and LOAD.

Methods: Z-score cognitive-domain composites for 311 amyloid-positive sporadic EOAD and 314 amyloid-positive LOAD participants were calculated from baseline data from age-appropriate control cohorts.

View Article and Find Full Text PDF

Inequities in Access to Mental Health Services Among Asian American, Native Hawaiian, and Pacific Islander Medicaid Enrollees.

Psychiatr Serv

December 2024

Department of Health Law, Policy, and Management, Boston University School of Public Health, Boston (Nguyen); Department of Health Services, Policy, and Practice (Nguyen) and Department of Epidemiology (Choy), Brown University School of Public Health, Providence, Rhode Island; Medicare Payment Advisory Commission, Washington, D.C. (Oh); Department of Population Health, Section for Health Equity, New York University Grossman School of Medicine, New York City (Ðoàn); Asian American Research Center on Health, San Francisco (Chu); Department of Health Policy and Management, Fielding School of Public Health (Banawa), Center for Health Policy Research (Banawa), and Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine (Oronce), University of California, Los Angeles, Los Angeles; Department of Medicine, VA Greater Los Angeles Healthcare System, Los Angeles (Oronce); Department of Chronic Disease Epidemiology, Yale School of Public Health, New Haven, Connecticut (Choy); Department of Public Health, Wayne State University, Detroit (Zhou).

Asian American (AA) and Native Hawaiian and Pacific Islander (NHPI) people are often aggregated into a monolithic group, but when they are disaggregated into ethnic groups (e.g., Chinese), inequities can be identified.

View Article and Find Full Text PDF
Article Synopsis
  • The study explores the biological differences linked to PTSD by examining DNA methylation changes in blood, suggesting they could indicate susceptibility or effects of trauma.
  • Conducted by the Psychiatric Genomics Consortium, the research included nearly 5,100 participants to identify specific genetic markers associated with PTSD.
  • Results showed 11 significant CpG sites related to PTSD, with some also showing correlations between blood and brain tissue methylation, highlighting their potential role in understanding PTSD biology.
View Article and Find Full Text PDF

The immune system is a key player in the onset and progression of neurodegenerative disorders. While brain resident immune cell-mediated neuroinflammation and peripheral immune cell (eg, T cell) infiltration into the brain have been shown to significantly contribute to Alzheimer's disease (AD) pathology, the nature and extent of immune responses in the brain in the context of AD and related dementias (ADRD) remain unclear. Furthermore, the roles of the peripheral immune system in driving ADRD pathology remain incompletely elucidated.

View Article and Find Full Text PDF

Emotion dysregulation is a core feature of borderline personality disorder (BPD). However, there is a dearth of literature examining the association between the dysregulation of positive emotions and BPD. The present study assesses the reciprocal and longitudinal associations between positive emotion dysregulation and BPD features.

View Article and Find Full Text PDF

Effects of optimism and stage of change on alcohol use and problems among sexual minority men with HIV participating in a brief motivational interviewing intervention.

J Subst Use Addict Treat

February 2025

Alcohol Research Center on HIV, Brown University School of Public Health, Providence, RI, United States of America; Center for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI, United States of America. Electronic address:

Introduction: Disseminating effective alcohol interventions for sexual minority men (SMM) with HIV remains a crucial public health endeavor. Motivational interviewing (MI) interventions are an established approach to reducing alcohol use, yet more research is needed to determine predictors of MI treatment outcomes and underlying mechanisms related to sustained behavior change among SMM with HIV. This pre-registered secondary analysis tested whether action-related stage of change mediated effects of a MI intervention on future alcohol use and problems among SMM with HIV, and whether individual differences in trait optimism moderated these associations.

View Article and Find Full Text PDF

Bystanders can play an important role in preventing alcohol-related harm (e.g., unintentional injury) or sexual aggression.

View Article and Find Full Text PDF

Background: Heavy drinking, smoking, and depression are common among men who have sex with men (MSM). The association of co-occurring longitudinal patterns of these conditions and mortality among MSM were tested, applying a syndemic framework - the interaction of two or more conditions that contribute to poor health outcomes.

Methods: Longitudinal data from 1999 to 2018 from the Multicenter AIDS Cohort Study of 3046 MSM were analyzed.

View Article and Find Full Text PDF

Background: In the ESCAPE-NA1 trial (Efficacy and Safety of Nerinetide for the Treatment of Acute Ischemic Stroke), treatment with nerinetide was associated with a smaller infarct volume among patients who did not receive intravenous alteplase. We assessed the effect of nerinetide on the surrogate imaging outcome of final infarct volume in patients who did not receive intravenous alteplase and explored predictors of outcome and modifiers of nerinetide's effect on infarct volume.

Methods: ESCAPE-NA1 was a multicenter, randomized trial in which patients with acute stroke with a baseline Alberta Stroke Program Early CT Score >4, undergoing endovascular thrombectomy, were randomized to receive intravenous nerinetide or placebo.

View Article and Find Full Text PDF

: Drinking prototypes (i.e., images of the type of individual who engages in specific alcohol use behaviors) are associated with alcohol use, with self-identified similarity to the prototype possibly driving this connection more than one's favorability of the prototype.

View Article and Find Full Text PDF

Background: Over the past several years, there have been several changes affecting the available options for oral HIV preexposure prophylaxis, including approvals for tenofovir alafenamide with emtricitabine in 2019 and a generic formulation of tenofovir disoproxil fumarate with emtricitabine in 2020.

Methods: In order to better understand providers' decision-making processes when deciding between these two drugs for pre-exposure prophylaxis, we conducted semi-structured in-depth interviews with resident, fellow and attending physicians in internal medicine and infectious diseases between May 2020 and March 2021. These interviews were analyzed to identify emergent codes, which were utilized in an inductive thematic analysis to identify major themes pertinent to pre-exposure prophylaxis decision-making.

View Article and Find Full Text PDF
Article Synopsis
  • Oxytocin is being studied as a potential treatment for psychostimulant use disorders, particularly its effects on dopamine signaling in the striatum, a brain region linked to natural rewards.
  • In a study involving male rhesus macaques, oxytocin was administered both intranasally and intravenously before administering methylphenidate, a stimulant similar to cocaine, and the impacts on dopamine release were monitored.
  • Results showed that oxytocin significantly decreased dopamine release in the dorsal striatum when stimulated by methylphenidate, suggesting oxytocin may be useful in treating addictions to psychostimulants.
View Article and Find Full Text PDF

Minority stress is the leading explanation for sexual minority women's (SMW) higher rates of, and heavier, alcohol use compared to heterosexual women. Little is known about how both partners' sexual minority stressors impact alcohol consumption in a dyadic context, and even less research has considered these effects at the day-level. This study utilizes dyadic daily diary data to test associations of each partner's sexual minority stress events with drinking outcomes (day-level alcohol use, heavy episodic drinking [HED], and estimated blood alcohol content [eBAC]) among women in same-gender relationships ( 159 couples).

View Article and Find Full Text PDF
Article Synopsis
  • The study examines pediatric opioid prescribing trends from 2005 to 2016, revealing notable changes and disparities across different age and sociodemographic groups.
  • Prescription rates initially increased by 35%, then decreased by 14% and 22% in subsequent periods, with significant variations tied to age, ethnicity, and payer type, indicating the complexity of opioid prescribing patterns.
  • The findings underscore the need to consider age and sociodemographic factors in understanding opioid prescriptions, highlighting potential inequities in pain management during the opioid epidemic, and suggesting further research post-2016.
View Article and Find Full Text PDF

Prolonged Venous Transit on Perfusion Imaging is Associated with Longer Lengths of Stay in Acute Large Vessel Occlusions.

AJNR Am J Neuroradiol

November 2024

From the Department of Radiology (M.K.), Cooper Medical School of Rowan University, Camden, NJ, USA; Department of Radiology (J.Y.M., H.A.S., M.S., H.L., V.S.Y), Department of Neurosurgery (R.X.), and Department of Neurology (V.C.U., E.B.M., R.L., M.B., R.H.L, A.E.H), Johns Hopkins Hospital, Baltimore, MD, USA; Department of Radiology (D.A.L.), West Virginia University Medicine, Morgantown, WV, USA; Department of Neuroradiology (A.A.D.), Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA; Department of Radiology (A.G.), Universite Libre De Bruxelles Hospital, Erasme, Belgium; Department of Radiology (J.J.H., B.P.), Department of Neurology (G.W.A.), Stanford University School of Medicine, Stanford, CA, USA; Department of Radiology (D.W.), Brown University/Rhode Island Hospital, Providence, RI, USA; Department of Radiology (T.D.F.), University Medical Center Munster, Munster, Germany; Department of Radiology (V.V.), Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA; Department of Radiology (A.S.), Department of Neurology (Y.A.), University of Cincinnati, Cincinnati, OH, USA; Department of Radiology and Biomedical Imaging (K.N.), University of California San Francisco, San Francisco, CA, USA.

Background And Purpose: Prolonged venous transit (PVT+) is a marker of venous outflow; it is defined as the presence or absence of time-to-maximum ≥10 seconds timing in either the superior sagittal sinus or torcula. This novel perfusion imaging-based metric has been associated with higher odds of mortality and lower odds of functional recovery. This study aims to assess the relationship between PVT on admission perfusion imaging and length of hospital stay in large vessel occlusion strokes successfully reperfused with mechanical thrombectomy.

View Article and Find Full Text PDF

Background: Attending clinic appointments supports HIV viral suppression, yet racial disparities are documented. We assessed whether multilevel resilience resources were associated with appointment attendance among African American/Black (AA/B) adults living with HIV in the United States.

Methods: We ascertained data from 291 AA/B clinical cohort participants from 2018 to 2021.

View Article and Find Full Text PDF