Publications by authors named "S A Petrosyan"
Article Synopsis
- - The LASI-DAD study aims to gather high-quality, longitudinal data on cognitive decline and dementia among older adults in India, analyzing various risk factors through cognitive tests and health assessments.
- - A large sample of 4,635 participants was recruited from across 22 states and union territories of India, with a high response rate and significant involvement in blood specimen collection for studying neurodegenerative biomarkers.
- - The comprehensive data from LASI-DAD will facilitate research on cognitive aging, dementia, and their associated risk factors, allowing for a deeper understanding of these issues in a nationally representative context.
This study presents the chemical synthesis, purification, and characterization of a novel non-natural synthetic amino acid. The compound was synthesized in solution, purified, and characterized using NMR spectroscopy, polarimetry, and melting point determination. Dynamic Light Scattering (DLS) analysis demonstrated its ability to form aggregates with an average size of 391 nm, extending to the low micrometric size range.
View Article and Find Full Text PDFIntroduction: The COVID-19 pandemic had large impacts on mental health; however, most existing evidence is focused on the initial lockdown period and high-income contexts. By assessing trajectories of mental health symptoms in India over 2 years, we aim to understand the effect of later time periods and pandemic characteristics on mental health in a lower-middle income context.
Methods: We used data from the Real-Time Insights of COVID-19 in India cohort study (N=3709).
Mental Health Impacts of COVID-19: Does Prepandemic Cognition and Dementia Status Matter?
J Gerontol A Biol Sci Med Sci
April 2024
Background: The coronavirus disease 2019 (COVID-19) pandemic disrupted daily life and led to sharp shocks in trends for various health outcomes. Although substantial evidence exists linking the pandemic and mental health outcomes and linking dementia and mental health outcomes, little evidence exists on how cognitive status may alter the impact of COVID-19 on mental health.
Methods: We used prepandemic data from the Longitudinal Aging Study in India-Diagnostic Assessment of Dementia study and 9 waves of data from the Real-Time Insights of COVID-19 in India study (N = 1 182).
Introduction: The COVID-19 pandemic had large impacts on mental health; however, most existing evidence is focused on the initial lockdown period and high-income contexts. By assessing trajectories of mental health symptoms in India over two years, we aim to understand the effect of later time periods and pandemic characteristics on mental health in a lower-middle income context.
Methods: We used data from the Real-Time Insights of COVID-19 in India (RTI COVID-India) cohort study (N=3,662).