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Browsing by Author "Chibnik, Lori B."
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Item Genetic architecture of age-related cognitive decline in African Americans(American Academy of Neurology, 2016-12-21) Raj, Towfique; Chibnik, Lori B.; McCabe, Cristin; Wong, Andus; Replogle, Joseph M.; Yu, Lei; Gao, Sujuan; Unverzagt, Frederick W.; Stranger, Barbara; Murrell, Jill; Barnes, Lisa; Hendrie, Hugh C.; Foroud, Tatiana; Krichevsky, Anna; Bennett, David A.; Hall, Kathleen S.; Evans, Denis A.; De Jager, Philip L.; Department of Biostatistics, Richard M. Fairbanks School of Public HealthOBJECTIVE: To identify genetic risk factors associated with susceptibility to age-related cognitive decline in African Americans (AAs). METHODS: We performed a genome-wide association study (GWAS) and an admixture-mapping scan in 3,964 older AAs from 5 longitudinal cohorts; for each participant, we calculated a slope of an individual's global cognitive change from neuropsychological evaluations. We also performed a pathway-based analysis of the age-related cognitive decline GWAS. RESULTS: We found no evidence to support the existence of a genomic region which has a strongly different contribution to age-related cognitive decline in African and European genomes. Known Alzheimer disease (AD) susceptibility variants in the ABCA7 and MS4A loci do influence this trait in AAs. Of interest, our pathway-based analyses returned statistically significant results highlighting a shared risk from lipid/metabolism and protein tyrosine signaling pathways between cognitive decline and AD, but the role of inflammatory pathways is polarized, being limited to AD susceptibility. CONCLUSIONS: The genetic architecture of aging-related cognitive in AA individuals is largely similar to that of individuals of European descent. In both populations, we note a surprising lack of enrichment for immune pathways in the genetic risk for cognitive decline, despite strong enrichment of these pathways among genetic risk factors for AD.Item Researching COVID to enhance recovery (RECOVER) pediatric study protocol: Rationale, objectives and design(Public Library of Science, 2023-06-23) Gross, Rachel; Thaweethai, Tanayott; Rosenzweig, Erika B.; Chan, James; Chibnik, Lori B.; Cicek, Mine S.; Elliott, Amy J.; Flaherman, Valerie J.; Foulkes, Andrea S.; Witvliet, Margot Gage; Gallagher, Richard; Gennaro, Maria Laura; Jernigan, Terry L.; Karlson, Elizabeth W.; Katz, Stuart D.; Kinser, Patricia A.; Kleinman, Lawrence C.; Lamendola-Essel, Michelle F.; Milner, Joshua D.; Mohandas, Sindhu; Mudumbi, Praveen C.; Newburger, Jane W.; Rhee, Kyung E.; Salisbury, Amy L.; Snowden, Jessica N.; Stein, Cheryl R.; Stockwell, Melissa S.; Tantisira, Kelan G.; Thomason, Moriah E.; Truong, Dongngan T.; Warburton, David; Wood, John C.; Ahmed, Shifa; Akerlundh, Almary; Alshawabkeh, Akram N.; Anderson, Brett R.; Aschner, Judy L.; Atz, Andrew M.; Aupperle, Robin L.; Baker, Fiona C.; Balaraman, Venkataraman; Banerjee, Dithi; Barch, Deanna M.; Baskin-Sommers, Arielle; Bhuiyan, Sultana; Bind, Marie-Abele C.; Bogie, Amanda L.; Buchbinder, Natalie C.; Bueler, Elliott; Bükülmez, Hülya; Casey, B. J.; Chang, Linda; Clark, Duncan B.; Clifton, Rebecca G.; Clouser, Katharine N.; Cottrell, Lesley; Cowan, Kelly; D'Sa, Viren; Dapretto, Mirella; Dasgupta, Soham; Dehority, Walter; Dummer, Kirsten B.; Elias, Matthew D.; Esquenazi-Karonika, Shari; Evans, Danielle N.; Faustino, E. Vincent S.; Fiks, Alexander G.; Forsha, Daniel; Foxe, John J.; Friedman, Naomi P.; Fry, Greta; Gaur, Sunanda; Gee, Dylan G.; Gray, Kevin M.; Harahsheh, Ashraf S.; Heath, Andrew C.; Heitzeg, Mary M.; Hester, Christina M.; Hill, Sophia; Hobart-Porter, Laura; Hong, Travis K. F.; Horowitz, Carol R.; Hsia, Daniel S.; Huentelman, Matthew; Hummel, Kathy D.; Iacono, William G.; Irby, Katherine; Jacobus, Joanna; Jacoby, Vanessa L.; Jone, Pei-Ni; Kaelber, David C.; Kasmarcak, Tyler J.; Kluko, Matthew J.; Kosut, Jessica S.; Laird, Angela R.; Landeo-Gutierrez, Jeremy; Lang, Sean M.; Larson, Christine L.; Lim, Peter Paul C.; Lisdahl, Krista M.; McCrindle, Brian W.; McCulloh, Russell J.; Mendelsohn, Alan L.; Metz, Torri D.; Morgan, Lerraughn M.; Müller-Oehring, Eva M.; Nahin, Erica R.; Neale, Michael C.; Ness-Cochinwala, Manette; Nolan, Sheila M.; Oliveira, Carlos R.; Oster, Matthew E.; Payne, R. Mark; Raissy, Hengameh; Randall, Isabelle G.; Rao, Suchitra; Reeder, Harrison T.; Rosas, Johana M.; Russell, Mark W.; Sabati, Arash A.; Sanil, Yamuna; Sato, Alice I.; Schechter, Michael S.; Selvarangan, Rangaraj; Shakti, Divya; Sharma, Kavita; Squeglia, Lindsay M.; Stevenson, Michelle D.; Szmuszkovicz, Jacqueline; Talavera-Barber, Maria M.; Teufel, Ronald J., II; Thacker, Deepika; Udosen, Mmekom M.; Warner, Megan R.; Watson, Sara E.; Werzberger, Alan; Weyer, Jordan C.; Wood, Marion J.; Yin, H. Shonna; Zempsky, William T.; Zimmerman, Emily; Dreyer, Benard P.; Pediatrics, School of MedicineImportance: SARS-CoV-2 infection can result in ongoing, relapsing, or new symptoms or other health effects after the acute phase of infection; termed post-acute sequelae of SARS-CoV-2 infection (PASC), or long COVID. The characteristics, prevalence, trajectory and mechanisms of PASC are ill-defined. The objectives of the Researching COVID to Enhance Recovery (RECOVER) Multi-site Observational Study of PASC in Adults (RECOVER-Adult) are to: (1) characterize PASC prevalence; (2) characterize the symptoms, organ dysfunction, natural history, and distinct phenotypes of PASC; (3) identify demographic, social and clinical risk factors for PASC onset and recovery; and (4) define the biological mechanisms underlying PASC pathogenesis. Methods: RECOVER-Adult is a combined prospective/retrospective cohort currently planned to enroll 14,880 adults aged ≥18 years. Eligible participants either must meet WHO criteria for suspected, probable, or confirmed infection; or must have evidence of no prior infection. Recruitment occurs at 86 sites in 33 U.S. states, Washington, DC and Puerto Rico, via facility- and community-based outreach. Participants complete quarterly questionnaires about symptoms, social determinants, vaccination status, and interim SARS-CoV-2 infections. In addition, participants contribute biospecimens and undergo physical and laboratory examinations at approximately 0, 90 and 180 days from infection or negative test date, and yearly thereafter. Some participants undergo additional testing based on specific criteria or random sampling. Patient representatives provide input on all study processes. The primary study outcome is onset of PASC, measured by signs and symptoms. A paradigm for identifying PASC cases will be defined and updated using supervised and unsupervised learning approaches with cross-validation. Logistic regression and proportional hazards regression will be conducted to investigate associations between risk factors, onset, and resolution of PASC symptoms. Discussion: RECOVER-Adult is the first national, prospective, longitudinal cohort of PASC among US adults. Results of this study are intended to inform public health, spur clinical trials, and expand treatment options.