4.5 Article

Heritability and genetic association analysis of neuroimaging measures in the Diabetes Heart Study

Journal

NEUROBIOLOGY OF AGING
Volume 36, Issue 3, Pages -

Publisher

ELSEVIER SCIENCE INC
DOI: 10.1016/j.neurobiolaging.2014.11.008

Keywords

Magnetic resonance imaging; Type 2 diabetes; Genetics; Heritability

Funding

  1. National Institutes of Health [R01 HL67348, R01 HL092301, R01 NS058700, R01 NS075107, F32 DK083214-01, F31 AG044879]
  2. General Clinical Research Centre of the Wake Forest School of Medicine [M01 RR07122, F32 HL085989]

Ask authors/readers for more resources

Patients with type 2 diabetes are at increased risk of age-related cognitive decline and dementia. Neuroimaging measures such as white matter lesion volume, brain volume, and fractional anisotropy may reflect the pathogenesis of these cognitive declines, and genetic factors may contribute to variability in these measures. This study examined multiple neuroimaging measures in 465 participants from 238 families with extensive genotype data in the type 2 diabetes enriched Diabetes Heart Study-Mind cohort. Heritability of these phenotypes and their association with candidate single-nucleotide polymorphisms (SNPs), and SNP data from genome-and exome-wide arrays were explored. All neuroimaging measures analyzed were significantly heritable ((h) over cap (2) = 0.55-0.99 in unadjusted models). Seventeen candidate SNPs (from 16 genes/regions) associated with neuroimaging phenotypes in prior studies showed no significant evidence of association. A missense variant (rs150706952, A432V) in PLEKHG4B from the exome-wide array was significantly associated with white matter mean diffusivity (p = 3.66 x 10(-7)) and gray matter mean diffusivity (p = 2.14 x 10(-7)). This analysis suggests genetic factors contribute to variation in neuroimaging measures in a population enriched for metabolic disease and other associated comorbidities. (C) 2015 Elsevier Inc. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Biochemistry & Molecular Biology

Malaria is a cause of iron deficiency in African children

John Muthii Muriuki, Alexander J. Mentzer, Ruth Mitchell, Emily L. Webb, Anthony O. Etyang, Catherine Kyobutungi, Alireza Morovat, Wandia Kimita, Francis M. Ndungu, Alex W. Macharia, Caroline J. Ngetsa, Johnstone Makale, Swaib A. Lule, Solomon K. Musani, Laura M. Raffield, Clare L. Cutland, Sodiomon B. Sirima, Amidou Diarra, Alfred B. Tiono, Michal Fried, Moses Gwamaka, Seth Adu-Afarwuah, James P. Wirth, Rita Wegmueller, Shabir A. Madhi, Robert W. Snow, Adrian V. S. Hill, Kirk A. Rockett, Manjinder S. Sandhu, Dominic P. Kwiatkowski, Andrew M. Prentice, Kendra A. Byrd, Alex Ndjebayi, Christine P. Stewart, Reina Engle-Stone, Tim J. Green, Crystal D. Karakochuk, Parminder S. Suchdev, Philip Bejon, Patrick E. Duffy, George Davey Smith, Alison M. Elliott, Thomas N. Williams, Sarah H. Atkinson

Summary: The study found a significant association between genetically predicted malaria risk and the prevalence of iron deficiency in African children, with a potential 49% reduction in ID if malaria episodes are halved as an intervention. Using HbAS as an instrumental variable in Mendelian randomization analyses, a 30% reduction in ID risk was observed in children living in malaria-endemic areas.

NATURE MEDICINE (2021)

Article Endocrinology & Metabolism

Optimism and telomere length among African American adults in the Jackson Heart Study

Harold H. Lee, Sakurako S. Okuzono, Eric S. Kim, Immaculata De Vivo, Laura M. Raffield, LaShaunta Glover, Mario Sims, Francine Grodstein, Laura D. Kubzansky

Summary: This study found that optimism was not associated with leukocyte telomere length among African American adults, and there was no evidence of effect modification by sex, age, body mass index, income, or chronic conditions. Future studies should explore alternate biological and behavioral mechanisms that may explain the association between optimism and health.

PSYCHONEUROENDOCRINOLOGY (2021)

Article Public, Environmental & Occupational Health

A System for Phenotype Harmonization in the National Heart, Lung, and Blood Institute Trans-Omics for Precision Medicine (TOPMed) Program

Adrienne M. Stilp, Leslie S. Emery, Jai G. Broome, Erin J. Buth, Alyna T. Khan, Cecelia A. Laurie, Fei Fei Wang, Quenna Wong, Dongquan Chen, Catherine M. D'Augustine, Nancy L. Heard-Costa, Chancellor R. Hohensee, William Craig Johnson, Lucia D. Juarez, Jingmin Liu, Karen M. Mutalik, Laura M. Raffield, Kerri L. Wiggins, Paul S. de Vries, Tanika N. Kelly, Charles Kooperberg, Pradeep Natarajan, Gina M. Peloso, Patricia A. Peyser, Alex P. Reiner, Donna K. Arnett, Stella Aslibekyan, Kathleen C. Barnes, Lawrence F. Bielak, Joshua C. Bis, Brian E. Cade, Ming-Huei Chen, Adolfo Correa, L. Adrienne Cupples, Mariza de Andrade, Patrick T. Ellinor, Myriam Fornage, Nora Franceschini, Weiniu Gan, Santhi K. Ganesh, Jan Graffelman, Megan L. Grove, Xiuqing Guo, Nicola L. Hawley, Wan-Ling Hsu, Rebecca D. Jackson, Cashell E. Jaquish, Andrew D. Johnson, Sharon L. R. Kardia, Shannon Kelly, Jiwon Lee, Rasika A. Mathias, Stephen T. McGarvey, Braxton D. Mitchell, May E. Montasser, Alanna C. Morrison, Kari E. North, Seyed Mehdi Nouraie, Elizabeth C. Oelsner, Nathan Pankratz, Stephen S. Rich, Jerome Rotter, Jennifer A. Smith, Kent D. Taylor, Ramachandran S. Vasan, Daniel E. Weeks, Scott T. Weiss, Carla G. Wilson, Lisa R. Yanek, Bruce M. Psaty, Susan R. Heckbert, Cathy C. Laurie

Summary: Genotype-phenotype association studies often require harmonization of data from multiple sources, which can be challenging due to data heterogeneity. A centralized system for phenotype harmonization was developed and successfully used to harmonize 63 phenotypes in the TOPMed program. The harmonized data and associated documentation have been made available for controlled access by the scientific community.

AMERICAN JOURNAL OF EPIDEMIOLOGY (2021)

Article Biochemistry & Molecular Biology

Whole genome sequence analysis of platelet traits in the NHLBI Trans-Omics for Precision Medicine (TOPMed) initiative

Amarise Little, Yao Hu, Quan Sun, Deepti Jain, Jai Broome, Ming-Huei Chen, Florian Thibord, Caitlin McHugh, Praveen Surendran, Thomas W. Blackwell, Jennifer A. Brody, Arunoday Bhan, Nathalie Chami, Paul S. de Vries, Lynette Ekunwe, Nancy Heard-Costa, Brian D. Hobbs, Ani Manichaikul, Jee-Young Moon, Michael H. Preuss, Kathleen Ryan, Zhe Wang, Marsha Wheeler, Lisa R. Yanek, Goncalo R. Abecasis, Laura Almasy, Terri H. Beaty, Lewis C. Becker, John Blangero, Eric Boerwinkle, Adam S. Butterworth, Helene Choquet, Adolfo Correa, Joanne E. Curran, Nauder Faraday, Myriam Fornage, David C. Glahn, Lifang Hou, Eric Jorgenson, Charles Kooperberg, Joshua P. Lewis, Donald M. Lloyd-Jones, Ruth J. F. Loos, Yuan- Min, Braxton D. Mitchell, Alanna C. Morrison, Deborah A. Nickerson, Kari E. North, Jeffrey R. O'Connell, Nathan Pankratz, Bruce M. Psaty, Ramachandran S. Vasan, Stephen S. Rich, Jerome Rotter, Albert Smith, Nicholas L. Smith, Hua Tang, Russell P. Tracy, Matthew P. Conomos, Cecelia A. Laurie, Rasika A. Mathias, Yun Li, Paul L. Auer, Timothy Thornton, Alexander P. Reiner, Andrew D. Johnson, Laura M. Raffield

Summary: This study utilized WGS data from TOPMed project to analyze genetic variation contributing to platelet count and volume in a multi-ethnic sample. Secondary signals at MPL and PECAM1 were identified and replicated in African ancestry populations, along with rare variation in Mendelian platelet-related disorder genes influencing platelet traits.

HUMAN MOLECULAR GENETICS (2022)

Article Genetics & Heredity

Analyses of biomarker traits in diverse UK biobank participants identify associations missed by European-centric analysis strategies

Quan Sun, Misa Graff, Bryce Rowland, Jia Wen, Le Huang, Tyne W. Miller-Fleming, Jeffrey Haessler, Michael H. Preuss, Jin-Fang Chai, Moa P. Lee, Christy L. Avery, Ching-Yu Cheng, Nora Franceschini, Xueling Sim, Nancy J. Cox, Charles Kooperberg, Kari E. North, Yun Li, Laura M. Raffield

Summary: Despite the underrepresentation of non-European populations in human genetics studies, this study conducted genome-wide association studies on diverse populations and identified novel genetic signals in African and South Asian participants, emphasizing the importance of utilizing existing genetic data for potential new discoveries even in modest sample sizes.

JOURNAL OF HUMAN GENETICS (2022)

Article Multidisciplinary Sciences

Genetic underpinnings of regional adiposity distribution in African Americans: Assessments from the Jackson Heart Study

Mohammad Y. Anwar, Laura M. Raffield, Leslie A. Lange, Adolfo Correa, Kira C. Taylor

Summary: The study suggests that genetic factors influence adiposity patterns in African Americans, with genetic risk scores being associated with different adiposity measures. Increases in body fat percentage are strongly linked to subcutaneous adiposity rather than visceral adiposity.

PLOS ONE (2021)

Article Oncology

DNAm-based signatures of accelerated aging and mortality in blood are associated with low renal function

Pamela R. Matias-Garcia, Cavin K. Ward-Caviness, Laura M. Raffield, Xu Gao, Yan Zhang, Rory Wilson, Xin Gao, Jana Nano, Andrew Bostom, Elena Colicino, Adolfo Correa, Brent Coull, Charles Eaton, Lifang Hou, Allan C. Just, Sonja Kunze, Leslie Lange, Ethan Lange, Xihong Lin, Simin Liu, Jamaji C. Nwanaji-Enwerem, Alex Reiner, Jincheng Shen, Ben Schottker, Pantel Vokonas, Yinan Zheng, Bessie Young, Joel Schwartz, Steve Horvath, Ake Lu, Eric A. Whitsel, Wolfgang Koenig, Jerzy Adamski, Juliane Winkelmann, Hermann Brenner, Andrea A. Baccarelli, Christian Gieger, Annette Peters, Nora Franceschini, Melanie Waldenberger

Summary: This study found significant associations between DNAmAge acceleration and DNAm mortality predictors with various kidney traits, including eGFR and CKD. The findings suggest that epigenetic biomarkers reflecting age-related mechanisms may play important roles in kidney disease prognosis and risk stratification. Further investigation into DNA methylation biomarkers for kidney disease is warranted based on these new findings.

CLINICAL EPIGENETICS (2021)

Article Endocrinology & Metabolism

Multi-ethnic GWAS and fine-mapping of glycaemic traits identify novel loci in the PAGE Study

Carolina G. Downie, Sofia F. Dimos, Stephanie A. Bien, Yao Hu, Burcu F. Darst, Linda M. Polfus, Yujie Wang, Genevieve L. Wojcik, Ran Tao, Laura M. Raffield, Nicole D. Armstrong, Hannah G. Polikowsky, Jennifer E. Below, Adolfo Correa, Marguerite R. Irvin, Laura J. F. Rasmussen-Torvik, Christopher S. Carlson, Lawrence S. Phillips, Simin Liu, James S. Pankow, Stephen S. Rich, Jerome Rotter, Steven Buyske, Tara C. Matise, Kari E. North, Christy L. Avery, Christopher A. Haiman, Ruth J. F. Loos, Charles Kooperberg, Mariaelisa Graff, Heather M. Highland

Summary: The study investigated the genetic basis of fasting glucose, fasting insulin, and HbA(1c) in participants from diverse backgrounds, identifying novel associations and highlighting the importance of conducting genetic studies in diverse populations.

DIABETOLOGIA (2022)

Article Clinical Neurology

Whole-Genome Sequencing Association Analyses of Stroke and Its Subtypes in Ancestrally Diverse Populations From Trans-Omics for Precision Medicine Project

Yao Hu, Jeffrey W. Haessler, Regina Manansala, Kerri L. Wiggins, Arden Moscati, Alexa Beiser, Nancy L. Heard-Costa, Chloe Sarnowski, Laura M. Raffield, Jaeyoon Chung, Sandro Marini, Christopher D. Anderson, Jonathan Rosand, Huichun Xu, Xiao Sun, Tanika N. Kelly, Quenna Wong, Leslie A. Lange, Jerome Rotter, Adolfo Correa, Ramachandran S. Vasan, Sudha Seshadri, Stephen S. Rich, Ron Do, Ruth J. F. Loos, William T. Longstreth, Joshua C. Bis, Bruce M. Psaty, David L. Tirschwell, Themistocles L. Assimes, Brian Silver, Simin Liu, Rebecca Jackson, Sylvia Wassertheil-Smoller, Braxton D. Mitchell, Myriam Fornage, Paul L. Auer, Alex P. Reiner, Charles Kooperberg

Summary: In this study, whole-genome sequencing data from ancestrally diverse populations were used to identify novel loci associated with stroke and its subtypes. The findings suggest the potential benefits of combining whole-genome sequencing data with populations of diverse genetic backgrounds, but also highlight the need to increase genome coverage and sample sizes.

STROKE (2022)

Article Clinical Neurology

Clonal Hematopoiesis Is Associated With Higher Risk of Stroke

Romit Bhattacharya, Seyedeh M. Zekavat, Jeffrey Haessler, Myriam Fornage, Laura Raffield, Md Mesbah Uddin, Alexander G. Bick, Abhishek Niroula, Bing Yu, Christopher Gibson, Gabriel Griffin, Alanna C. Morrison, Bruce M. Psaty, William T. Longstreth, Joshua C. Bis, Stephen S. Rich, Jerome Rotter, Russell P. Tracy, Adolfo Correa, Sudha Seshadri, Andrew Johnson, Jason M. Collins, Kathleen M. Hayden, Tracy E. Madsen, Christie M. Ballantyne, Siddhartha Jaiswal, Benjamin L. Ebert, Charles Kooperberg, JoAnn E. Manson, Eric A. Whitsel, Pradeep Natarajan, Alexander P. Reiner

Summary: Clonal hematopoiesis of indeterminate potential (CHIP) is associated with an increased risk of stroke, particularly with hemorrhagic and small vessel ischemic stroke.

STROKE (2022)

Article Genetics & Heredity

Super interactive promoters provide insight into cell type-specific regulatory networks in blood lineage cell types

Jia Wen, Taylor M. Lagler, Quan Sun, Yuchen Yang, Jiawen Chen, Yuriko Harigaya, Vijay G. Sankaran, Ming Hu, Alexander P. Reiner, Laura M. Raffield, Yun Li

Summary: This study uses promoter capture Hi-C data to identify and characterize cell type-specific super-interactive promoters (SIPs) in blood lineage cell types. The study finds that the interaction regions of SIPs are more likely to overlap with cell type-specific ATAC-seq peaks and GWAS variants for relevant blood cell traits. Furthermore, SIP genes tend to express at a higher level in the corresponding cell type and SIP subnetworks help interpret GWAS variants. The study highlights the potential of using promoter-centric analyses to identify important genes and their regulatory regions.

PLOS GENETICS (2022)

Article Biology

Whole genome sequence association analysis of fasting glucose and fasting insulin levels in diverse cohorts from the NHLBI TOPMed program

Daniel DiCorpo, Sheila M. Gaynor, Emily M. Russell, Kenneth E. Westerman, Laura M. Raffield, Timothy D. Majarian, Peitao Wu, Chloe Sarnowski, Heather M. Highland, Anne Jackson, Natalie R. Hasbani, Paul S. de Vries, Jennifer A. Brody, Bertha Hidalgo, Xiuqing Guo, James A. Perry, Jeffrey R. O'Connell, Samantha Lent, May E. Montasser, Brian E. Cade, Deepti Jain, Heming Wang, Ricardo D'Oliveira Albanus, Arushi Varshney, Lisa R. Yanek, Leslie Lange, Nicholette D. Palmer, Marcio Almeida, Juan M. Peralta, Stella Aslibekyan, Abigail S. Baldridge, Alain G. Bertoni, Lawrence F. Bielak, Chung-Shiuan Chen, Yii-Der Ida Chen, Won Jung Choi, Mark O. Goodarzi, James S. Floyd, Marguerite R. Irvin, Rita R. Kalyani, Tanika N. Kelly, Seonwook Lee, Ching-Ti Liu, Douglas Loesch, JoAnn E. Manson, Ryan L. Minster, Take Naseri, James S. Pankow, Laura J. Rasmussen-Torvik, Alexander P. Reiner, Muagututi'a Sefuiva Reupena, Elizabeth Selvin, Jennifer A. Smith, Daniel E. Weeks, Huichun Xu, Jie Yao, Wei Zhao, Stephen Parker, Alvaro Alonso, Donna K. Arnett, John Blangero, Eric Boerwinkle, Adolfo Correa, L. Adrienne Cupples, Joanne E. Curran, Ravindranath Duggirala, Jiang He, Susan R. Heckbert, Sharon L. R. Kardia, Ryan W. Kim, Charles Kooperberg, Simin Liu, Rasika A. Mathias, Stephen T. McGarvey, Braxton D. Mitchell, Alanna C. Morrison, Patricia A. Peyser, Bruce M. Psaty, Susan Redline, Alan R. Shuldiner, Kent D. Taylor, Ramachandran S. Vasan, Karine A. Viaud-Martinez, Jose C. Florez, James G. Wilson, Robert Sladek, Stephen S. Rich, Jerome Rotter, Xihong Lin, Josee Dupuis, James B. Meigs, Jennifer Wessel, Alisa K. Manning

Summary: This study utilized high-coverage whole genome sequencing on over 23,000 non-diabetic individuals from diverse populations, identifying multiple genetic loci associated with fasting glucose and insulin levels. The findings provide a foundation for future sequencing-based investigations of glycemic traits.

COMMUNICATIONS BIOLOGY (2022)

Article Cardiac & Cardiovascular Systems

Circulating Soluble CD163, Associations With Cardiovascular Outcomes and Mortality, and Identification of Genetic Variants in Older Individuals: The Cardiovascular Health Study

Peter Durda, Laura M. Raffield, Ethan M. Lange, Nels C. Olson, Nancy Swords Jenny, Mary Cushman, Pia Deichgraeber, Niels Grarup, Anna Jonsson, Torben Hansen, Josyf C. Mychaleckyj, Bruce M. Psaty, Alex P. Reiner, Russell P. Tracy, Leslie A. Lange

Summary: The study found an association between sCD163 and cardiovascular disease events and conducted a genome-wide association study to identify variants related to sCD163. Variants were identified in different ethnic groups.

JOURNAL OF THE AMERICAN HEART ASSOCIATION (2022)

Article Biology

Non-linear machine learning models incorporating SNPs and PRS improve polygenic prediction in diverse human populations

Michael Elgart, Genevieve Lyons, Santiago Romero-Brufau, Nuzulul Kurniansyah, Jennifer A. Brody, Xiuqing Guo, Henry J. Lin, Laura Raffield, Yan Gao, Han Chen, Paul de Vries, Donald M. Lloyd-Jones, Leslie A. Lange, Gina M. Peloso, Myriam Fornage, Jerome Rotter, Stephen S. Rich, Alanna C. Morrison, Bruce M. Psaty, Daniel Levy, Susan Redline, Tamar Sofer

Summary: Incorporating a standard polygenic risk score (PRS) as a feature in a machine learning model increases the percentage variance explained for genetic traits by taking into account non-linearities and interaction effects. This approach proved effective in predicting nine complex phenotypes in a multi-ancestry population, outperforming standard linear PRS models.

COMMUNICATIONS BIOLOGY (2022)

Article Cardiac & Cardiovascular Systems

Association Between Whole Blood-Derived Mitochondrial DNA Copy Number, Low-Density Lipoprotein Cholesterol, and Cardiovascular Disease Risk

Xue Liu, Xianbang Sun, Yuankai Zhang, Wenqing Jiang, Meng Lai, Kerri L. Wiggins, Laura M. Raffield, Lawrence F. Bielak, Wei Zhao, Achilleas Pitsillides, Jeffrey Haessler, Yinan Zheng, Thomas W. Blackwell, Jie Yao, Xiuqing Guo, Yong Qian, Bharat Thyagarajan, Nathan Pankratz, Stephen S. Rich, Kent D. Taylor, Patricia A. Peyser, Susan R. Heckbert, Sudha Seshadri, Eric Boerwinkle, Megan L. Grove, Nicholas B. Larson, Jennifer A. Smith, Ramachandran S. Vasan, Annette L. Fitzpatrick, Myriam Fornage, Jun Ding, April P. Carson, Goncalo Abecasis, Josee Dupuis, Alexander Reiner, Charles Kooperberg, Lifang Hou, Bruce M. Psaty, James G. Wilson, Daniel Levy, Jerome I. Rotter, Joshua C. Bis, Claudia L. Satizabal, Dan E. Arking, Chunyu Liu

Summary: This study found that high low-density lipoprotein cholesterol may underlie the complex relationships between mtDNA CN and vascular atherosclerosis.

JOURNAL OF THE AMERICAN HEART ASSOCIATION (2023)

Article Geriatrics & Gerontology

Frontoparietal function and underlying structure reflect capacity for motor skill acquisition during healthy aging

Sarah N. Kraeutner, Cristina Rubino, Jennifer K. Ferris, Shie Rinat, Lauren Penko, Larissa Chiu, Brian Greeley, Christina B. Jones, Beverley C. Larssen, Lara A. Boyd

Summary: This study examined the age-related changes in brain function and baseline brain structure that support motor skill acquisition. The findings showed that older adults experienced decreases in functional connectivity during motor skill acquisition, while younger adults experienced increases. Additionally, regardless of age group, lower baseline microstructure in a frontoparietal tract was associated with slower motor skill acquisition.

NEUROBIOLOGY OF AGING (2024)

Article Geriatrics & Gerontology

Genetic analyses in multiplex families confirms chromosome 5q35 as a risk locus for Alzheimer's Disease in individuals of African Ancestry

Karen Nuytemans, Farid Rajabli, Melissa Jean-Francois, Jiji Thulaseedhara Kurup, Larry D. Adams, Takiyah D. Starks, Patrice L. Whitehead, Brian W. Kunkle, Allison Caban-Holt, Jonathan L. Haines, Michael L. Cuccaro, Jeffery M. Vance, Goldie S. Byrd, Gary W. Beecham, Christiane Reitz, Margaret A. Pericak-Vance

Summary: This study conducted genetic research on African American AD families and identified a significant linkage signal associated with AD, highlighting the importance of diverse population-level genetic data in understanding the genetic determinants of AD.

NEUROBIOLOGY OF AGING (2024)

Article Geriatrics & Gerontology

Improvement of mnemonic discrimination with acute light exercise is mediated by pupil-linked arousal in healthy older adults

Kazuya Suwabe, Ryuta Kuwamizu, Kazuki Hyodo, Toru Yoshikawa, Takeshi Otsuki, Asako Zempo-Miyaki, Michael A. Yassa, Hideaki Soya

Summary: Physical exercise has a positive impact on hippocampal memory decline with aging. Recent studies have shown that even light exercise can improve memory and this improvement is mediated by the ascending arousal system. This study aimed to investigate the effects of light-intensity exercise on hippocampal memory function in healthy older adults and found that pupil dilation during exercise played a role in the memory improvement.

NEUROBIOLOGY OF AGING (2024)

Article Geriatrics & Gerontology

Metformin, age-related cognitive decline, and brain pathology

Ajay Sood, Ana Werneck Capuano, Robert Smith Wilson, Lisa Laverne Barnes, Alifiya Kapasi, David Alan Bennett, Zoe Arvanitakis

Summary: The objective of this study was to explore the impact of metformin on cognition and brain pathology. The results showed that metformin users had slower decline in global cognition, episodic memory, and semantic memory compared to non-users. However, the relationship between metformin use and certain brain pathology remains uncertain.

NEUROBIOLOGY OF AGING (2024)

Article Geriatrics & Gerontology

Sex modifies effects of imaging and CSF biomarkers on cognitive and functional outcomes: a study of Alzheimer's disease

Brian N. Lee, Junwen Wang, Molly A. Hall, Dokyoon Kim, Shana D. Stites, Li Shen

Summary: Alzheimer's disease (AD) is a neurodegenerative disorder characterized by memory and functional impairments. This study analyzed participants from the Alzheimer's Disease Neuroimaging Initiative and found differential associations between cerebral spinal fluid (CSF)/neuroimaging biomarkers and cognitive/functional outcomes, as well as variations between sexes. These findings suggest that sex differences may play a role in the development of AD.

NEUROBIOLOGY OF AGING (2024)

Article Geriatrics & Gerontology

Associations between recall of proper names in story recall and CSF amyloid and tau in adults without cognitive impairment

Madeline R. Hale, Rebecca Langhough, Lianlian Du, Bruce P. Hermann, Carol A. Van Hulle, Margherita Carboni, Gwendlyn Kollmorgenj, Kristin E. Basche, Davide Bruno, Leah Sanson-Miles, Erin M. Jonaitis, Nathaniel A. Chin, Ozioma C. Okonkwo, Barbara B. Bendlin, Cynthia M. Carlsson, Henrik Zetterberg, Kaj Blennow, Tobey J. Betthauser, Sterling C. Johnson, Kimberly D. Mueller

Summary: This study demonstrates a relationship between cerebrospinal fluid biomarkers and the ability to recall proper names in the preclinical phase of Alzheimer's disease.

NEUROBIOLOGY OF AGING (2024)

Article Geriatrics & Gerontology

Auditory robustness and resilience in the aging auditory system of the desert locust

Thomas T. Austin, Christian L. Thomas, Ben Warren

Summary: This study investigated the effects of age on the robustness and resilience of auditory system using the desert locust. The researchers found that gene expression changes were mainly influenced by age rather than noise exposure. Both young and aged locusts were able to recover their auditory nerve function within 48 hours of noise exposure, but the recovery of transduction current magnitude was impaired in aged locusts. Key genes responsible for robustness to noise exposure in young locusts and potential candidates for compensatory mechanisms in auditory neurons of aged locusts were identified.

NEUROBIOLOGY OF AGING (2024)