Publications by authors named "Sudarshan Krishnamurthy"

Importance: A lack of transparent reporting of race and ethnicity in clinical research limits the ability to identify health inequities and evaluate to what extent clinical research includes diverse populations.

Objective: To identify study characteristics associated with reporting race and ethnicity of clinical study participants and to document temporal trends in race and ethnicity reporting on clinicaltrials.gov.

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Importance: Among older women (aged ≥50 years) with ERBB2 (formerly HER2 or HER2/neu)-positive breast cancer, research has shown racial and ethnic disparities in access to ERBB2-targeted therapies, with Black women receiving treatment at lower rates than their White counterparts.

Objective: To examine racial and ethnic disparities in receipt of ERBB2-targeted therapies and changes in receipt over time.

Design, Setting, And Participants: This retrospective cohort study used Surveillance, Epidemiology, and End Results-Medicare linked data from January 1, 2010, to December 31, 2020.

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Introduction: This study aimed to describe medical students' perceptions and experiences with health policy and advocacy training and practice and define motivations and barriers for engagement.

Methods: This was a mixed-methods study of medical students from May to October 2022. Students were invited to participate in a web-based survey and optional follow-up phone interview.

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Introduction: Neighborhood disadvantage may be an important determinant of cardiometabolic health and cognitive aging. However, less is known about relationships among individuals with mild cognitive impairment (MCI).

Methods: The objective of this study is to investigate the relationship between neighborhood disadvantage measured by national Area Deprivation Index (ADI) rank with measures of cardiometabolic health and cognition among Wake Forest (WF) Alzheimer's Disease Research Center (ADRC) participants, with and without MCI.

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Article Synopsis
  • Adverse psychosocial factors like stress and loneliness can affect gene expression related to inflammation and cognitive decline, suggesting that people facing these challenges may experience higher levels of CTRA gene expression.
  • In participants with normal cognition and mild cognitive impairment (MCI), a sense of eudaimonic well-being (EWB) was linked to lower levels of CTRA gene expression, indicating its potential protective role against stress.
  • Coping strategies varied based on cognitive status, influencing the relationship with CTRA gene expression, while loneliness did not significantly affect gene expression in this low-loneliness group.
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  • The study investigates racial and ethnic disparities in Veterans' experiences with VA-funded community care from 2016 to 2021, revealing that Black and Hispanic Veterans generally rated their care lower than White and non-Hispanic Veterans in several areas.
  • Using data from over 230,000 respondents, the research specifically looked at ratings across nine domains, finding significant gaps in areas such as provider communication, appointment scheduling, and billing.
  • Interestingly, Black Veterans rated eligibility determination and care coordination higher than other groups, highlighting mixed experiences within the community care system.
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Background: Undernutrition is related to numerous childhood outcomes. However, little research has investigated the relationship between food insecurity and family dynamics. This systematic review seeks to validate the evidence for a relationship between these 2 factors.

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Biomedical research has advanced medicine but also contributed to widening racial and ethnic health inequities. Despite a growing acknowledgment of the need to incorporate anti-racist objectives into research, there remains a need for practical guidance for recognizing and addressing the influence of ingrained practices perpetuating racial harms, particularly for general internists. Through a review of the literature, and informed by the Research Lifecycle Framework, this position statement from the Society of General Internal Medicine presents a conceptual framework suggesting multi-level systemic changes and strategies for researchers to incorporate an anti-racist perspective throughout the research lifecycle.

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Alzheimer's Disease (AD) is the most common cause of dementia, although multiple pathologies are found in nearly half of the cases with clinically diagnosed AD. Prion diseases, such as Creutzfeldt-Jakob disease (CJD), are rare causes of dementia and typically manifest as a rapidly progressive dementia, where symptom onset to dementia most often occurs over the course of months. In this brief report, we describe a patient's typically progressive dementia with a precipitous decline at the end of their life who, on neuropathological evaluation, was found to have multiple neurodegenerative proteinopathies as well as spongiform encephalopathy due to CJD.

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Building expertise in climate and planetary health among healthcare professionals cannot come with greater urgency as the threats from climate change become increasingly apparent. Current and future healthcare professionals-particularly internists-will increasingly need to understand the interconnectedness of natural systems and human health to better serve their patients longitudinally. Despite this, few national medical societies and accreditation bodies espouse frameworks for climate change and planetary health-related education at the undergraduate (UME), graduate (GME), and continuing (CME) medical education level.

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Physicians serve as crucial advocates for their patients. Undergraduate medical education (UME) must move beyond the biomedical model, built upon the perception that health is defined purely in the absence of illness, to also incorporate population health through health policy, advocacy, and community engagement to account for structural and social determinants of health. Currently, the US guidelines for UME lack structured training in health policy or advocacy, leaving trainees ill-equipped to assume their role as physician-advocates or to engage with communities.

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Introduction: Adverse psychosocial exposure is associated with increased proinflammatory gene expression and reduced type-1 interferon gene expression, a profile known as the conserved transcriptional response to adversity (CTRA). Little is known about CTRA activity in the context of cognitive impairment, although chronic inflammatory activation has been posited as one mechanism contributing to late-life cognitive decline.

Methods: We studied 171 community-dwelling older adults from the Wake Forest Alzheimer's Disease Research Center who answered questions via a telephone questionnaire battery about their perceived stress, loneliness, well-being, and impact of COVID-19 on their life, and who provided a self-collected dried blood spot sample.

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Idiopathic pulmonary fibrosis (IPF) is characterized by mitochondrial dysfunction. However, details about the non-mitochondrial enzymes that sustain the proliferative nature of IPF are unclear. Aconitases are a family of enzymes that sustain metabolism inside and outside mitochondria.

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The United States pays more for medical care than any other nation in the world, including for prescription drugs. These costs are inequitably distributed, as individuals from underrepresented racial and ethnic groups in the United States experience the highest costs of care and unequal access to high-quality, evidence-based medication therapy. Pharmacoequity refers to equity in access to pharmacotherapies or ensuring that all patients, regardless of race and ethnicity, socioeconomic status, or availability of resources, have access to the highest quality of pharmacotherapy required to manage their health conditions.

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Article Synopsis
  • Mutant mice develop pulmonary fibrosis after exposure to high oxygen levels, showing changes in their airway and lung tissue.
  • Analysis reveals that genes related to the formation of cilia are downregulated in older mutant mice compared to normal mice, leading to abnormal cell structures in the lungs.
  • The enzyme MMP7, which is linked to ciliogenesis and is a marker for human idiopathic pulmonary fibrosis (IPF), is found to be increased in both the lungs and lung fluid of these mutant mice, making them a potential model for studying IPF.
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The pathogenic processes driving Alzheimer's disease (AD) are complex. An incomplete understanding of underlying disease mechanisms has presented insurmountable obstacles for developing effective disease-modifying therapies. Advanced chronological age is the greatest risk factor for developing AD.

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Fracture of the angioplasty balloon is a known complication during endovascular procedures in arteriovenous (AV) fistulas and grafts. We describe a case of a patient with end-stage renal disease (ESRD) on dialysis with a brachiocephalic AV fistula that had become dysfunctional. After a percutaneous angioplasty procedure during balloon withdrawal, a portion of the balloon fractured and separated due to the balloon being caught in the struts of a previously placed bare metal stent.

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In 1960, Rita Levi-Montalcini and Barbara Booker made an observation that transformed neuroscience: as neurons mature, they become apoptosis resistant. The following year Leonard Hayflick and Paul Moorhead described a stable replicative arrest of cells in vitro, termed "senescence". For nearly 60 years, the cell biology fields of neuroscience and senescence ran in parallel, each separately defining phenotypes and uncovering molecular mediators to explain the 1960s observations of their founding mothers and fathers, respectively.

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Senescence phenotypes and mitochondrial dysfunction are implicated in aging and in premature aging diseases, including ataxia telangiectasia (A-T). Loss of mitochondrial function can drive age-related decline in the brain, but little is known about whether improving mitochondrial homeostasis alleviates senescence phenotypes. We demonstrate here that mitochondrial dysfunction and cellular senescence with a senescence-associated secretory phenotype (SASP) occur in A-T patient fibroblasts, and in ATM-deficient cells and mice.

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Cellular stress responses influence cell fate decisions. Apoptosis and proliferation represent opposing reactions to cellular stress or damage and may influence distinct health outcomes. Clinical and epidemiological studies consistently report inverse comorbidities between age-associated neurodegenerative diseases and cancer.

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