Sarah Y Bessen, Wuyang Zhang, Alison R Huang, Michelle Arnold, Sheila Burgard, Theresa H Chisolm, David Couper, Jennifer A Deal, Sarah P Faucette, Adele M Goman, Nancy W Glynn, Theresa Gmelin, Lisa Gravens-Mueller, Kathleen M Hayden, Christine M Mitchell, James S Pankow, James R Pike, Nicholas S Reed, Victoria A Sanchez, Jennifer A Schrack, Kevin J Sullivan, Josef Coresh, Frank R Lin, Pablo Martinez-Amezcua
{"title":"Effect of Hearing Intervention Versus Health Education Control on Fatigue: A Secondary Analysis of the ACHIEVE Study.","authors":"Sarah Y Bessen, Wuyang Zhang, Alison R Huang, Michelle Arnold, Sheila Burgard, Theresa H Chisolm, David Couper, Jennifer A Deal, Sarah P Faucette, Adele M Goman, Nancy W Glynn, Theresa Gmelin, Lisa Gravens-Mueller, Kathleen M Hayden, Christine M Mitchell, James S Pankow, James R Pike, Nicholas S Reed, Victoria A Sanchez, Jennifer A Schrack, Kevin J Sullivan, Josef Coresh, Frank R Lin, Pablo Martinez-Amezcua","doi":"10.1093/gerona/glae193","DOIUrl":"10.1093/gerona/glae193","url":null,"abstract":"<p><strong>Background: </strong>Fatigue is a common complaint among older adults with hearing loss. The impact of addressing hearing loss on fatigue symptoms has not been studied in a randomized controlled trial. In a secondary analysis of the Aging and Cognitive Health Evaluation in Elders (ACHIEVE) study, we investigated the effect of hearing intervention versus health education control on 3-year change in fatigue in community-dwelling older adults with hearing loss.</p><p><strong>Methods: </strong>Participants aged 70-84 years old with untreated hearing loss recruited across 4 study sites in the United States (Forsyth County, North Carolina; Jackson, Mississippi; Minneapolis, Minnesota; Washington County, Maryland) were randomized (1:1) to hearing intervention or health education control and followed for 3 years. Three-year change in fatigue symptoms was measured by 2 instruments (RAND-36 and PROMIS). We estimated the intervention effect as the difference in the 3-year change in fatigue between intervention and control groups using a linear mixed-effects model under the intention-to-treat principle.</p><p><strong>Results: </strong>Participants (n = 977) had a mean age (SD) of 76.8 (4.0) years, were 53.5% female and 87.8% White. Over 3 years, a beneficial effect of the hearing intervention versus health education control on fatigue was observed using the RAND-fatigue score (β = -0.12 [95% CI: -0.22, -0.02]). Estimates also suggested beneficial effect of hearing intervention on fatigue when measured by the PROMIS-fatigue score (β = -0.32 [95% CI: -1.15, 0.51]).</p><p><strong>Conclusions: </strong>Our findings suggest that hearing intervention may reduce fatigue over 3 years among older adults with hearing loss.</p>","PeriodicalId":94243,"journal":{"name":"The journals of gerontology. Series A, Biological sciences and medical sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11402025/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141879959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kristine E Ensrud, John T Schousboe, Allyson M Kats, Brent C Taylor, Wei Duan-Porter, Kerry M Sheets, Cynthia M Boyd, Peggy M Cawthon, Lisa Langsetmo
{"title":"Functional Impairments, Phenotypic Frailty, and Sector-Specific Incremental Healthcare Costs in Older Adults.","authors":"Kristine E Ensrud, John T Schousboe, Allyson M Kats, Brent C Taylor, Wei Duan-Porter, Kerry M Sheets, Cynthia M Boyd, Peggy M Cawthon, Lisa Langsetmo","doi":"10.1093/gerona/glae245","DOIUrl":"10.1093/gerona/glae245","url":null,"abstract":"<p><strong>Background: </strong>This study quantifies incremental healthcare expenditures of functional impairments and phenotypic frailty in specific healthcare sectors.</p><p><strong>Methods: </strong>Pooled 2023 analysis of 4 prospective cohort studies linked with Medicare claims including 4 318 women and 3 847 men attending an index examination (2002-2011). Annualized inpatient, skilled nursing facility (SNF), home healthcare (HHC), and outpatient costs (2023 dollars) ascertained for 36 months following index examination. Functional impairments (difficulty performing 4 activities of daily living) and frailty phenotype (operationalized using 5 components) derived from cohort data. Weighted multimorbidity index including demographics derived from claims.</p><p><strong>Results: </strong>Mean age at index examination was 79.2 years. After accounting for multimorbidity and each other, average annualized incremental costs of 3-4 functional impairments versus no impairment in women (men) were $2 838 ($5 516) in inpatient, $1 572 ($1 446) in SNF, and $1 349 ($1 060) in HHC sectors; average incremental costs of phenotypic frailty versus robust in women (men) was $4 100 (not significant for men) in inpatient, $1 579 ($1 254) in SNF, and $645 ($526) in HHC sectors. Incremental inpatient costs were primarily due to a higher hospitalization risk, while incremental SNF and HHC costs were related to both increased risks of utilization and higher costs among individuals with utilization. Neither geriatric domain was associated with outpatient costs.</p><p><strong>Conclusions: </strong>In this study of community-dwelling beneficiaries, functional impairments were independently associated with higher subsequent expenditures in inpatient, SNF, and HHC sectors among both sexes. Phenotypic frailty was independently associated with higher subsequent inpatient costs in women, and higher SNF and HHC costs in both sexes.</p>","PeriodicalId":94243,"journal":{"name":"The journals of gerontology. Series A, Biological sciences and medical sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11543992/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142396487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yitong Ling, Shiqi Yuan, Xiaxuan Huang, Anding Xu, Jun Lyu
{"title":"Response to the Comment on \"Associations of Folate/Folic Acid Supplementation Alone and in Combination With Other B Vitamins on Dementia Risk and Brain Structure: Evidence From 466,224 UK Biobank Participants\".","authors":"Yitong Ling, Shiqi Yuan, Xiaxuan Huang, Anding Xu, Jun Lyu","doi":"10.1093/gerona/glae124","DOIUrl":"10.1093/gerona/glae124","url":null,"abstract":"","PeriodicalId":94243,"journal":{"name":"The journals of gerontology. Series A, Biological sciences and medical sciences","volume":"79 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jinoh Kim, Rochelle Buffenstein, Anne M Bronikowski, Natalia-Del Pilar Vanegas, Lorena Rosas, Paula Agudelo-Garcia, Ana L Mora, Mauricio Rojas, Davis A Englund, Nathan K LeBrasseur, Allancer Nunes, Paul D Robbins, Marian L Kohut, Siddhant Kothadiya, Rizia Bardhan, Christina D Camell, Ines Sturmlechner, Jörg J Goronzy, Chung-Yang Yeh, Dudley W Lamming, Shijiao Huang, Scott F Leiser, Wilber Escorcia, Matthew S Gill, Jackson R Taylor, Stephen L Helfand, Sovannarith Korm, Kristin E Gribble, Mariana Pehar, Magdalena Blaszkiewicz, Kristy L Townsend, Eric R McGregor, Rozalyn M Anderson, Lukas Stilgenbauer, Marianna Sadagurski, Alicia Taylor, Elizabeth McNeill, Thomas Stoeger, Hua Bai
{"title":"The Fourth Annual Symposium of the Midwest Aging Consortium.","authors":"Jinoh Kim, Rochelle Buffenstein, Anne M Bronikowski, Natalia-Del Pilar Vanegas, Lorena Rosas, Paula Agudelo-Garcia, Ana L Mora, Mauricio Rojas, Davis A Englund, Nathan K LeBrasseur, Allancer Nunes, Paul D Robbins, Marian L Kohut, Siddhant Kothadiya, Rizia Bardhan, Christina D Camell, Ines Sturmlechner, Jörg J Goronzy, Chung-Yang Yeh, Dudley W Lamming, Shijiao Huang, Scott F Leiser, Wilber Escorcia, Matthew S Gill, Jackson R Taylor, Stephen L Helfand, Sovannarith Korm, Kristin E Gribble, Mariana Pehar, Magdalena Blaszkiewicz, Kristy L Townsend, Eric R McGregor, Rozalyn M Anderson, Lukas Stilgenbauer, Marianna Sadagurski, Alicia Taylor, Elizabeth McNeill, Thomas Stoeger, Hua Bai","doi":"10.1093/gerona/glae236","DOIUrl":"10.1093/gerona/glae236","url":null,"abstract":"<p><p>The Midwest Aging Consortium (MAC) has emerged as a critical collaborative initiative aimed at advancing our understanding of aging and developing strategies to combat the rising prevalence of age-related diseases. Founded in 2019, MAC brings together researchers from various disciplines and institutions across the Midwestern United States to foster interdisciplinary geroscience research. This report summarizes the highlights of the Fourth Annual Symposium of MAC, which was held at Iowa State University in May 2023. The symposium featured presentations on a wide array of topics, including studies on slow-aging animals, cellular senescence and senotherapeutics, the role of the immune system in aging, metabolic changes in aging, neuronal health in aging, and biomarkers for measuring the aging process. Speakers shared findings from studies involving a variety of animals, ranging from commonly used species such as mice, rats, worms, yeast, and fruit flies, to less-common ones like naked mole-rats, painted turtles, and rotifers. MAC continues to emphasize the importance of supporting emerging researchers and fostering a collaborative environment, positioning itself as a leader in aging research. This symposium not only showcased the current state of aging biology research but also highlighted the consortium's role in training the next generation of scientists dedicated to improving the healthspan and well-being of the aging population.</p>","PeriodicalId":94243,"journal":{"name":"The journals of gerontology. Series A, Biological sciences and medical sciences","volume":"79 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11536180/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142585324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daniel Clayton-Chubb, Ammar Majeed, Stuart K Roberts, Hans G Schneider, Isabella Commins, Jessica Fitzpatrick, Robyn L Woods, Joanne Ryan, Sultana Monira Hussain, Natassia Tan, John S Lubel, Cammie Tran, Alexander D Hodge, John J McNeil, William W Kemp
{"title":"Serum Transaminases and Older Adults: Distribution and Associations With All-Cause Mortality.","authors":"Daniel Clayton-Chubb, Ammar Majeed, Stuart K Roberts, Hans G Schneider, Isabella Commins, Jessica Fitzpatrick, Robyn L Woods, Joanne Ryan, Sultana Monira Hussain, Natassia Tan, John S Lubel, Cammie Tran, Alexander D Hodge, John J McNeil, William W Kemp","doi":"10.1093/gerona/glae203","DOIUrl":"10.1093/gerona/glae203","url":null,"abstract":"<p><strong>Background: </strong>Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) are commonly ordered tests in general medical practice. However, their distribution and significance in older adults are understudied. As such, we aimed to evaluate sex-stratified distribution of both ALT and AST in older adults (≥70 years) and assess for associations with mortality.</p><p><strong>Methods: </strong>Post-hoc analysis of the ASPirin in Reducing Events in the Elderly (ASPREE) randomized, placebo-controlled trial of daily low-dose aspirin for initially relatively healthy older persons. Univariate analysis and multiple logistic regression were used to explore baseline characteristics. Cox regression and restricted cubic splines were used to examine links between transaminase levels and mortality.</p><p><strong>Results: </strong>Of the 11 853 participants with ALT and AST levels, 1 054 (8.9%) deaths were recorded over a median of 6.4 (interquartile range [IQR] 5.4-7.6) years. For ALT, the lowest quintiles for males and females were 6-15 and 5-13 U/L, respectively; for AST, the lowest quintiles were 8-18 and 7-17 U/L, respectively. On both univariate and models adjusted for covariates including age, body mass index, frailty, diabetes, and kidney disease, males and females in the lowest quintile of ALT had an increased hazard of mortality (aHR 1.51 [95% confidence interval {CI} 1.14-1.99] and aHR 1.39 [95% CI 1.03-1.88], respectively). For the lowest quintile of AST, only males were at increased risk (aHR 1.33 [95% CI 1.04-1.70]). Associations remained significant when removing outliers.</p><p><strong>Conclusions: </strong>Low ALT levels independently confer an increased hazard of mortality for older males and females; low AST only affected older male survival. Further evaluation of mechanisms would be worthwhile, and re-evaluating the lower limit of normal for ALT in older adults should be considered.</p>","PeriodicalId":94243,"journal":{"name":"The journals of gerontology. Series A, Biological sciences and medical sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11491531/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142001669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W James Deardorff, Bocheng Jing, Matthew E Growdon, Leah J Blank, Tasce Bongiovanni, Kristine Yaffe, W John Boscardin, Kenneth S Boockvar, Michael A Steinman
{"title":"Impact of Hospitalizations on Problematic Medication Use Among Community-Dwelling Persons With Dementia.","authors":"W James Deardorff, Bocheng Jing, Matthew E Growdon, Leah J Blank, Tasce Bongiovanni, Kristine Yaffe, W John Boscardin, Kenneth S Boockvar, Michael A Steinman","doi":"10.1093/gerona/glae207","DOIUrl":"10.1093/gerona/glae207","url":null,"abstract":"<p><strong>Background: </strong>Hospitalizations are frequently disruptive for persons with dementia (PWD) in part due to the use of potentially problematic medications for complications such as delirium, pain, and insomnia. We sought to determine the impact of hospitalizations on problematic medication prescribing in the months following hospitalization.</p><p><strong>Methods: </strong>We included community-dwelling PWD in the Health and Retirement Study aged ≥66 with a hospitalization from 2008 to 2018. We characterized problematic medications as medications that negatively affect cognition (strongly anticholinergics/sedative-hypnotics), medications from the 2019 Beers criteria, and medications from STOPP-V2. To capture durable changes, we compared problematic medications 4 weeks prehospitalization (baseline) to 4 months posthospitalization period. We used a generalized linear mixed model with Poisson distribution adjusting for age, sex, comorbidity count, prehospital chronic medications, and timepoint.</p><p><strong>Results: </strong>Among 1 475 PWD, 504 had a qualifying hospitalization (median age 84 (IQR = 79-90), 66% female, 17% Black). There was a small increase in problematic medications from the baseline to posthospitalization timepoint that did not reach statistical significance (adjusted mean 1.28 vs 1.40, difference 0.12 (95% CI -0.03, 0.26), p = .12). Results were consistent across medication domains and certain subgroups. In one prespecified subgroup, individuals on <5 prehospital chronic medications showed a greater increase in posthospital problematic medications compared with those on ≥5 medications (p = .04 for interaction, mean increase from baseline to posthospitalization of 0.25 for those with <5 medications (95% CI 0.05, 0.44) vs. 0.06 (95% CI -0.12, 0.25) for those with ≥5 medications).</p><p><strong>Conclusions: </strong>Hospitalizations had a small, nonstatistically significant effect on longer-term problematic medication use among PWD.</p>","PeriodicalId":94243,"journal":{"name":"The journals of gerontology. Series A, Biological sciences and medical sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11419320/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142001667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tyler R Bell, Carol E Franz, Kelsey R Thomas, McKenna E Williams, Lisa T Eyler, Imanuel Lerman, Christine Fennema-Notestine, Olivia K Puckett, Stephen M Dorros, Matthew S Panizzon, Rahul C Pearce, Donald J Hagler, Michael J Lyons, Jeremy A Elman, William S Kremen
{"title":"Elevated C-Reactive Protein in Older Men With Chronic Pain: Association With Plasma Amyloid Levels and Hippocampal Volume.","authors":"Tyler R Bell, Carol E Franz, Kelsey R Thomas, McKenna E Williams, Lisa T Eyler, Imanuel Lerman, Christine Fennema-Notestine, Olivia K Puckett, Stephen M Dorros, Matthew S Panizzon, Rahul C Pearce, Donald J Hagler, Michael J Lyons, Jeremy A Elman, William S Kremen","doi":"10.1093/gerona/glae206","DOIUrl":"10.1093/gerona/glae206","url":null,"abstract":"<p><strong>Background: </strong>Chronic pain leads to tau accumulation and hippocampal atrophy, which may be moderated through inflammation. In older men, we examined associations of chronic pain with Alzheimer's disease (AD)-related plasma biomarkers and hippocampal volume as moderated by systemic inflammation.</p><p><strong>Methods: </strong>Participants were men without dementia. Chronic pain was defined as moderate-to-severe pain in 2+ study waves at average ages 56, 62, and 68. At age 68, we measured plasma amyloid-beta (Aβ42, n = 871), Aβ40 (n = 887), total tau (t-tau, n = 841), and neurofilament light chain (NfL, n = 915), and serum high-sensitivity C-reactive protein (hs-CRP, n = 968), a marker of systemic inflammation. A subgroup underwent structural MRI to measure hippocampal volume (n = 385). Analyses adjusted for medical morbidities, depressive symptoms, and opioid use.</p><p><strong>Results: </strong>Chronic pain was related to higher Aβ40 (β = 0.25, p = .009), but hs-CRP was unrelated to AD-related biomarkers (ps > .05). There was a significant interaction such that older men with both chronic pain and higher levels of hs-CRP had higher levels of Aβ42 (β = 0.36, p = .001) and Aβ40 (β = 0.29, p = .003). Chronic pain and hs-CRP did not interact to predict levels of Aβ42/Aβ40, t-tau, or NfL. Furthermore, there were significant interactions such that Aβ42 and Aβ40 were associated with lower hippocampal volume, particularly when levels of hs-CRP were elevated (hs-CRP × Aβ42: β = -0.19, p = .002; hs-CRP × Aβ40: β = -0.21, p = .001), regardless of chronic pain status.</p><p><strong>Conclusions: </strong>Chronic pain was associated with higher plasma Aβ, especially when hs-CRP was also elevated. Higher hs-CRP and Aβ levels were both related to smaller hippocampal volumes. Chronic pain, when accompanied by systemic inflammation, may elevate the risk of neurodegeneration in AD-vulnerable regions.</p>","PeriodicalId":94243,"journal":{"name":"The journals of gerontology. Series A, Biological sciences and medical sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11439493/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142020051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Doctor/Daughter/Caregiver: Would I Do It Again?","authors":"Suzanne Salamon","doi":"10.1093/gerona/glae247","DOIUrl":"https://doi.org/10.1093/gerona/glae247","url":null,"abstract":"","PeriodicalId":94243,"journal":{"name":"The journals of gerontology. Series A, Biological sciences and medical sciences","volume":"79 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142820544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Silvia Bombelli, Chiara Grasselli, Paolo Mazzola, Valentina Veronesi, Ivana Morabito, Nicola Zucchini, Chiara M Scollo, Salvatore I Blanco, Sofia De Marco, Barbara Torsello, Federica Vitarelli, Laura Antolini, Cristina Bianchi, Valerio Leoni, Giuseppe Bellelli, Roberto A Perego
{"title":"Impairment of Renal and Hematopoietic Stem/Progenitor Cell Compartments in Frailty Syndrome: Link With Oxidative Stress, Plasma Cytokine Profiles, and Nuclear DNA Damage.","authors":"Silvia Bombelli, Chiara Grasselli, Paolo Mazzola, Valentina Veronesi, Ivana Morabito, Nicola Zucchini, Chiara M Scollo, Salvatore I Blanco, Sofia De Marco, Barbara Torsello, Federica Vitarelli, Laura Antolini, Cristina Bianchi, Valerio Leoni, Giuseppe Bellelli, Roberto A Perego","doi":"10.1093/gerona/glae188","DOIUrl":"10.1093/gerona/glae188","url":null,"abstract":"<p><p>Frailty is an age-related syndrome that drives multiple physiological system impairments in some older adults, and its pathophysiological mechanisms remain unclear. We evaluated whether frailty-related biological processes could impair stem cell compartments, specifically the renal stem compartment, given that kidney dysfunctions are frequent in frailty. A well-characterized in vitro nephrosphere model of human adult renal stem/progenitor cells has been instrumental to and was appropriate for verifying this hypothesis in our current research. Evaluating the effects of plasma from older individuals with frailty (frail plasma) on allogeneic renal stem/progenitor cells, we showed significant functional impairment and nuclear DNA damage in the treated cells of the renal stem compartment. The analysis of the frail plasma revealed mitochondrial functional impairment associated with the activation of oxidative stress and a unique inflammatory mediator profile in frail individuals. In addition, the plasma of frail subjects also contained the highest percentage of DNA-damaged autologous circulating hematopoietic progenitor/stem cells. The integration of both molecular and functional data obtained allowed us to discern patterns associated with frailty status, irrespective of the comorbidities present in the frail individuals. The data obtained converged toward biological conditions that in frailty caused renal and hematopoietic impairment of stem cells, highlighting the possibility of concomitant exhaustion of several stem compartments.</p>","PeriodicalId":94243,"journal":{"name":"The journals of gerontology. Series A, Biological sciences and medical sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11439494/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141768343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Johanna Drewelies, Jan Homann, Valentin Max Vetter, Sandra Duezel, Simone Kühn, Laura Deecke, Elisabeth Steinhagen-Thiessen, Philippe Jawinski, Sebastian Markett, Ulman Lindenberger, Christina M Lill, Lars Bertram, Ilja Demuth, Denis Gerstorf
{"title":"There are multiple clocks that time us: Cross-sectional and longitudinal associations among 14 alternative indicators of age and aging.","authors":"Johanna Drewelies, Jan Homann, Valentin Max Vetter, Sandra Duezel, Simone Kühn, Laura Deecke, Elisabeth Steinhagen-Thiessen, Philippe Jawinski, Sebastian Markett, Ulman Lindenberger, Christina M Lill, Lars Bertram, Ilja Demuth, Denis Gerstorf","doi":"10.1093/gerona/glae244","DOIUrl":"https://doi.org/10.1093/gerona/glae244","url":null,"abstract":"<p><p>Aging is a complex process influenced by mechanisms operating at numerous levels of functioning. Multiple biomarkers of age have been identified, yet we know little about how the different alternative age indicators are intertwined. In the Berlin Aging Study II (nmin= 328; nmax= 1,517, women = 51%; 14.27 years of education), we examined how levels and seven-year changes in indicators derived from blood assays, MRI brain scans, other-ratings, and self-reports converge among older adults. We included eight epigenetic biomarkers (incl. five epigenetic \"clocks\"), a BioAge composite from clinical laboratory parameters, brain age, skin age, subjective age, subjective life expectancy, and future health horizon. We found moderate associations within aging domains, both cross-sectionally and longitudinally over seven years. However, associations across different domains were infrequent and modest. Notably, participants with older BioAge had correspondingly older epigenetic ages. Our results suggest that different aging clocks are only loosely interconnected and that more specific measures are needed to differentiate healthy from unhealthy aging.</p>","PeriodicalId":94243,"journal":{"name":"The journals of gerontology. Series A, Biological sciences and medical sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142396488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}