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Alkahtani SA, Alshammari GM, Alzuwaydi A, Alfuhaid A, Al-Masri AA, Qaisar R, Habib SS. Association between handgrip strength and metabolic syndrome in relation to gender and adiposity among middle aged and older Saudi populations. Aging Male 2024; 27:2325146. [PMID: 38468373 DOI: 10.1080/13685538.2024.2325146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 02/26/2024] [Indexed: 03/13/2024] Open
Abstract
AIM This cross-sectional study investigated the association between metabolic syndrome (MetS) and handgrip strength (HGS) with respect to sex and adiposity in Saudi men (n = 287) and women (n = 268). MATERIAL AND METHODS Anthropometry, body composition, HGS, and blood biochemistry were measured. The average age of the study population was 57.65 ± 9.3 years (men = 55.1 ± 9.3 years, women = 60.4 ± 9.3 years). We report that HGS/body mass index (BMI), HGS/weight, and HGS/fat (%) were significantly higher in controls than in patients with MetS in men but not in women. According to the ROC analysis, relative HGS (RHGS) was higher than HGS alone in the association with MetS, which was significant for men (p < 0.01). At lower quartiles of HGS, the probability of MetS was higher in women, and the same was found in men in the lower quartiles of HGS/%Fat. Multinomial regression revealed significant associations between age and adiposity and MetS in men and HGS in women. Additionally, the linear regression of age, HGS, and weight exhibited significant associations between HGS with WC in both sexes. CONCLUSION A higher risk of MetS in the lower quartiles of HGS was found in women, and adiposity moderated the relationship between HGS and MetS in men.
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Affiliation(s)
- Shaea A Alkahtani
- Exercise Physiology Department, College of Sport Sciences and Physical Activity, King Saud University, Riyadh, Saudi Arabia
| | - Ghedeir M Alshammari
- Department of Nutrition, College of Agriculture and Nutrition, King Saud University, Riyadh, Saudi Arabia
| | - Aishah Alzuwaydi
- Department of Nutrition, College of Agriculture and Nutrition, King Saud University, Riyadh, Saudi Arabia
| | - Abdulaziz Alfuhaid
- Exercise Physiology Department, College of Sport Sciences and Physical Activity, King Saud University, Riyadh, Saudi Arabia
| | - Abeer A Al-Masri
- Department of Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Rizwan Qaisar
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab of Emirates
| | - Syed Shahid Habib
- Department of Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
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2
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Aggouras AN, Stowe EJ, Mlawer SJ, Connizzo BK. Aged Tendons Exhibit Altered Mechanisms of Strain-Dependent Extracellular Matrix Remodeling. J Biomech Eng 2024; 146:071009. [PMID: 38584416 DOI: 10.1115/1.4065270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 04/03/2024] [Indexed: 04/09/2024]
Abstract
Aging is a primary risk factor for degenerative tendon injuries, yet the etiology and progression of this degeneration are poorly understood. While aged tendons have innate cellular differences that support a reduced ability to maintain mechanical tissue homeostasis, the response of aged tendons to altered levels of mechanical loading has not yet been studied. To address this question, we subjected young and aged murine flexor tendon explants to various levels of in vitro tensile strain. We first compared the effect of static and cyclic strain on matrix remodeling in young tendons, finding that cyclic strain is optimal for studying remodeling in vitro. We then investigated the remodeling response of young and aged tendon explants after 7 days of varied mechanical stimulus (stress deprivation, 1%, 3%, 5%, or 7% cyclic strain) via assessment of tissue composition, biosynthetic capacity, and degradation profiles. We hypothesized that aged tendons would show muted adaptive responses to changes in tensile strain and exhibit a shifted mechanical setpoint, at which the remodeling balance is optimal. Interestingly, we found that 1% cyclic strain best maintains native physiology while promoting extracellular matrix (ECM) turnover for both age groups. However, aged tendons display fewer strain-dependent changes, suggesting a reduced ability to adapt to altered levels of mechanical loading. This work has a significant impact on understanding the regulation of tissue homeostasis in aged tendons, which can inform clinical rehabilitation strategies for treating elderly patients.
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Affiliation(s)
- Anthony N Aggouras
- Department of Biomedical Engineering, Boston University, 44 Cummington Mall, Boston, MA 02115
- Boston University
| | - Emma J Stowe
- Department of Biomedical Engineering, Boston University, 44 Cummington Mall, Boston, MA 02115
| | - Samuel J Mlawer
- Department of Biomedical Engineering, Boston University, 44 Cummington Mall, Boston, MA 02115
- Boston University
| | - Brianne K Connizzo
- Department of Biomedical Engineering, Boston University, 44 Cummington Mall, Boston, MA 02115
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3
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Witt NJ, Woessner AE, Herrmann J, Quinn KP, Sander EA. Mechanical Models of Collagen Networks for Understanding Changes in the Failure Properties of Aging Skin. J Biomech Eng 2024; 146:071002. [PMID: 38183223 PMCID: PMC10983714 DOI: 10.1115/1.4064406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 12/19/2023] [Accepted: 12/27/2023] [Indexed: 01/07/2024]
Abstract
Skin undergoes mechanical alterations due to changes in the composition and structure of the collagenous dermis with aging. Previous studies have conflicting findings, with both increased and decreased stiffness reported for aging skin. The underlying structure-function relationships that drive age-related changes are complex and difficult to study individually. One potential contributor to these variations is the accumulation of nonenzymatic crosslinks within collagen fibers, which affect dermal collagen remodeling and mechanical properties. Specifically, these crosslinks make individual fibers stiffer in their plastic loading region and lead to increased fragmentation of the collagenous network. To better understand the influence of these changes, we investigated the impact of nonenzymatic crosslink changes on the dermal microstructure using discrete fiber networks representative of the dermal microstructure. Our findings suggest that stiffening the plastic region of collagen's mechanical response has minimal effects on network-level stiffness and failure stresses. Conversely, simulating fragmentation through a loss of connectivity substantially reduces network stiffness and failure stress, while increasing stretch ratios at failure.
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Affiliation(s)
- Nathan J. Witt
- Roy J. Carver Department of Biomedical Engineering, College of Engineering, University of Iowa, Iowa City, IA 52240
| | - Alan E. Woessner
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR 72701
| | - Jacob Herrmann
- Roy J. Carver Department of Biomedical Engineering, College of Engineering, University of Iowa, Iowa City, IA 52242
| | - Kyle P. Quinn
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR 72701
| | - Edward A. Sander
- Roy J. Carver Department of Biomedical Engineering, College of Engineering, University of Iowa, 5629 Seamans Center, Iowa City, IA 52242; Department of Orthopedics and Rehabilitation, Carver College of Medicine, University of Iowa, Iowa City, IA 52242
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4
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Tuomola EM, Keskinen KE, Viljanen A, Rantanen T, Portegijs E. Neighborhood Walkability, Walking Difficulties, and Participation in Leisure Activities Among Older People: A Cross-Sectional Study and 4-Year Follow-Up of a Subsample. J Aging Health 2024; 36:367-378. [PMID: 37482698 PMCID: PMC11025300 DOI: 10.1177/08982643231191444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Objectives: To study cross-sectional and longitudinal associations between objectively assessed neighborhood walkability, walking difficulties, and participation in leisure activities among older people. Methods: Self-reported 2 km walking difficulty (intact, modifications, difficulties) at baseline and participating in organized group, outdoor recreation and cultural activities at baseline and follow-up were studied in community-dwelling persons (N = 848) aged 75-90. A walkability index, calculated using a geographic information system, was categorized into tertiles (lowest, middle, highest). Results: Residence in the highest walkability areas was associated with higher participation in cultural activities and lower participation in outdoor recreation, while the latter was most frequently reported by residents in the lowest walkability areas. Those reporting no difficulties were more likely than those reporting difficulties to participate in all studied activities. Residence in the middle or highest walkability areas predicted higher participation in cultural activities at follow-up. Discussion: Older persons activity profiles associate with neighborhood walkability and walking difficulties.
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Affiliation(s)
- Essi-Mari Tuomola
- Faculty of Sport and Health Sciences and Gerontology Research Center, University of Jyvaskyla, Jyväskylä, Finland
| | - Kirsi E. Keskinen
- Faculty of Sport and Health Sciences and Gerontology Research Center, University of Jyvaskyla, Jyväskylä, Finland
| | - Anne Viljanen
- Faculty of Sport and Health Sciences and Gerontology Research Center, University of Jyvaskyla, Jyväskylä, Finland
| | - Taina Rantanen
- Faculty of Sport and Health Sciences and Gerontology Research Center, University of Jyvaskyla, Jyväskylä, Finland
| | - Erja Portegijs
- University Medical Center Groningen, Center for Human Movement Sciences, University of Groningen, Groningen, The Netherlands
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5
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Tian X, Zhao Z, Zhao J, Su D, He B, Shi C, Shi Y. Transcriptomic analysis to identify genes associated with hypothalamus vulnerability in aging mice with cognitive decline. Behav Brain Res 2024; 465:114943. [PMID: 38452974 DOI: 10.1016/j.bbr.2024.114943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
The normal aging process is accompanied by cognitive decline, and previous studies have indicated the crucial role of the hypothalamus in regulating both aging and cognition. However, the precise molecular mechanism underlying this relationship remains unclear. Therefore, this present study aimed to identify potential predictors of cognitive decline associated with aging specifically within the hypothalamus. To achieve this, we employed Morris water maze (MWM) testing to assess learning and memory differences between young and aged mice. Additionally, transcriptome sequencing was conducted on the hypothalamus of young and aged mice to identify potential genes. Subsequently, GO and KEGG analyses were performed to investigate the functions of differentially expressed genes (DEGs) and their associated biological pathways. Finally, the results obtained from sequencing analysis were further validated using qRT-PCR. Notably, MWM testing revealed a significant decrease in spatial learning and memory ability among aged mice. According to KEGG analysis, the DEGs primarily encompassed various biochemical signaling pathways related to immune system (e.g., C3; C4b; Ccl2; Ccl7; Cebpb; Clec7a; Col3a1; Cxcl10; Cxcl2; Fosb; Fosl1; Gbp5; H2-Ab1; Hspa1a; Hspa1b; Icam1; Il1b; Itga5; Itgax; Lilrb4a; Plaur; Ptprc; Serpine1; Tnfrsf10b; Tnfsf10), neurodegenerative disease (e.g., Atp2a1; Creb5; Fzd10; Hspa1a; Hspa1b; Il1b; Kcnj10; Nxf3; Slc6a3; Tubb6; Uba1y; Wnt9b), nervous system function (e.g., Chrna4; Chrna6; Creb5; Slc6a3),and aging (e.g., Creb5; Hspa1a; Hspa1b) among others. These identified genes may serve as potential predictors for cognitive function in elderly individuals and will provide a crucial foundation for further exploration into the underlying molecular mechanisms.
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Affiliation(s)
- Xiaofeng Tian
- Department of clinical laboratory, the Third Affiliated Hospital of Zhengzhou University. Zhengzhou, China
| | - Zhixing Zhao
- Department of clinical laboratory, the Third Affiliated Hospital of Zhengzhou University. Zhengzhou, China
| | - Jing Zhao
- Department of clinical laboratory, the Third Affiliated Hospital of Zhengzhou University. Zhengzhou, China
| | - Dongmei Su
- NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Bin He
- NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Cuige Shi
- NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China.
| | - Ying Shi
- Department of clinical laboratory, the Third Affiliated Hospital of Zhengzhou University. Zhengzhou, China.
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6
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Kodesh E, Navot-Mintzer D, Livshitz L, Shub I, Or T. The effects of a multi-day cross-country mountain bike race on myocardial function, stress, inflammation and cardiac biomarkers in amateur master athletes. Res Sports Med 2024; 32:425-442. [PMID: 36134901 DOI: 10.1080/15438627.2022.2125316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 09/13/2022] [Indexed: 10/14/2022]
Abstract
This study aimed to examine the effects of a multi-day mountain bike race on amateur master athlete cyclists (AMA). AMA (50±5 years) completed 2 stages of a mountain bike race. Six weeks before racing, echocardiography, blood and maximal cardiopulmonary exercise tests (CPET) were performed. One hour after completion of each race stage, echocardiography measurements were taken and blood was sampled for stress, inflammatory and cardiac biomarkers. Main outcomes of the CPET were maximal oxygen consumption (VO2max) 50.7±6.5 ml/kg/min; maximal power 328±45 Watt and ventilatory threshold of 86%VO2max. Participants completed 95.7km with an elevation of 1650m on the first day, and 92.5km with an elevation of 1410m on the second day, with completion times of 357±42 and 390 ±43 minutes, respectively. After racing, increases in Creatine Phosphokinase and C-reactive protein (3-6 fold) (p<0.001), Troponin I (4-fold) (p<0.001) and N-terminal pro-brain natriuretic peptide (NT-Pro BNP) (4-7-fold) (p<0.001) were noted, with a reduction in the myocardial global work index of 17-24% (p<0.001). No correlations were found between Troponin I or NT-Pro BNP and myocardial global work index. Highly aerobically fit AMA participating in demanding endurance events demonstrated elevated stress, inflammatory, muscle damage and cardiac biomarkers. However, these changes did not significantly correlate with altered cardiac function. In addition, consecutive days of demanding prolonged cycling exercise did not have cumulative effects on the measured myocardial parameters.
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Affiliation(s)
- Einat Kodesh
- Physical Therapy department, University of Haifa, Haifa, Israel
| | - Dalya Navot-Mintzer
- The Ribstein Center for Sports Medicine and Research, Wingate Institute, Netanya, Israel
| | - Liora Livshitz
- Cardiology Department, Galilee Medical Center, Nahariya, Israel
| | - Idit Shub
- The Ribstein Center for Sports Medicine and Research, Wingate Institute, Netanya, Israel
| | - Tsafrir Or
- Cardiology Department, Galilee Medical Center, Nahariya, Israel
- Azrieli Faculty of Medicine, Bar Ilan University, Israel
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7
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Duchesneau ED, Stürmer T, Kim DH, Reeder-Hayes K, Edwards JK, Faurot KR, Lund JL. Performance of a Claims-Based Frailty Proxy Using Varying Frailty Ascertainment Lookback Windows. Med Care 2024; 62:305-313. [PMID: 38498870 PMCID: PMC10997449 DOI: 10.1097/mlr.0000000000001994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
BACKGROUND Frailty is an aging-related syndrome of reduced physiological reserve to maintain homeostasis. The Faurot frailty index has been validated as a Medicare claims-based proxy for predicting frailty using billing information from a user-specified ascertainment window. OBJECTIVES We assessed the validity of the Faurot frailty index as a predictor of the frailty phenotype and 1-year mortality using varying frailty ascertainment windows. RESEARCH DESIGN We identified older adults (66+ y) in Round 5 (2015) of the National Health and Aging Trends Study with Medicare claims linkage. Gold standard frailty was assessed using the frailty phenotype. We calculated the Faurot frailty index using 3, 6, 8, and 12 months of claims prior to the survey or all-available lookback. Model performance for each window in predicting the frailty phenotype was assessed by quantifying calibration and discrimination. Predictive performance for 1-year mortality was assessed by estimating risk differences across claims-based frailty strata. RESULTS Among 4253 older adults, the 6 and 8-month windows had the best frailty phenotype calibration (calibration slopes: 0.88 and 0.87). All-available lookback had the best discrimination (C-statistic=0.780), but poor calibration. Mortality associations were strongest using a 3-month window and monotonically decreased with longer windows. Subgroup analyses revealed worse performance in Black and Hispanic individuals than counterparts. CONCLUSIONS The optimal ascertainment window for the Faurot frailty index may depend on the clinical context, and researchers should consider tradeoffs between discrimination, calibration, and mortality. Sensitivity analyses using different durations can enhance the robustness of inferences. Research is needed to improve prediction across racial and ethnic groups.
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Affiliation(s)
- Emilie D Duchesneau
- Department of Epidemiology and Prevention, Division of Public Health Sciences, Wake Forest University School of Medicine, Winston-Salem, NC
| | - Til Stürmer
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Dae Hyun Kim
- Marcus Institute for Aging Research, Hebrew SeniorLife, Harvard Medical School, Roslindale, MA
- Department of Medicine, Division of Gerontology, Beth Israel Deaconess Medical Center, Brookline, MA
| | - Katherine Reeder-Hayes
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC
- Department of Medicine, Division of Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Jessie K Edwards
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Keturah R Faurot
- Department of Physical Medicine and Rehabilitation, School of Medicine, University of North Carolina, Chapel Hill, NC
| | - Jennifer L Lund
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC
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8
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Mlawer SJ, Frank EH, Connizzo BK. Aged tendons lack adaptive response to acute compressive injury. J Orthop Res 2024; 42:973-984. [PMID: 38041209 PMCID: PMC11009076 DOI: 10.1002/jor.25752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 10/24/2023] [Accepted: 11/29/2023] [Indexed: 12/03/2023]
Abstract
Rotator cuff tendinopathy has a multifactorial etiology, with both aging and external compression found to influence disease progression. However, tendon's response to these factors is still poorly understood and in vivo animal models make it difficult to decouple these effects. Therefore, we developed an explant culture model that allows us to directly apply compression to tendons and then observe their biological responses. Using this model, we applied a single acute compressive injury to C57BL/6J flexor digitorum longus tendon explants and observed changes in viability, metabolic activity, matrix composition, matrix biosynthesis, matrix structure, gene expression, and mechanical properties. We hypothesized that a single acute compressive load would result in an injury response in tendon and that this effect would be amplified in aged tendons. We found that young tendons had increased matrix turnover with a decrease in small leucine-rich proteoglycans, increase in compression-resistant proteoglycan aggrecan, increase in collagen synthesis, and an upregulation of collagen-degrading MMP-9. Aged tendons lacked any of these adaptive responses and instead had decreased metabolic activity and collagen synthesis. This implies that aged tendons lack the adaptation mechanisms required to return to homeostasis, and therefore are at greater risk for compression-induced injury. Overall, we present a novel compressive injury model that demonstrates lasting age-dependent changes and has the potential to examine the long-term response of tendon to a variety of compressive loading conditions.
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Affiliation(s)
- Samuel J. Mlawer
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, United States
| | - Eliot H. Frank
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - Brianne K. Connizzo
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, United States
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9
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Jäggi M, Karlin S, Zitzmann NU, Rohr N. Shear bond strength of universal adhesives to human enamel and dentin. J ESTHET RESTOR DENT 2024; 36:804-812. [PMID: 38308570 DOI: 10.1111/jerd.13204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/22/2024] [Accepted: 01/25/2024] [Indexed: 02/05/2024]
Abstract
OBJECTIVE The composition of universal adhesives is highly diverse. The purpose of this in vitro study was to compare the shear bond strength of a composite with five different universal adhesives to human enamel and dentin. MATERIALS AND METHODS The shear bond strength of a composite (G-aenial Universal Injectable) to human enamel and dentin was tested in selective enamel etching mode before and after thermocyclic aging (10,000 cycles) using five different universal adhesive systems (Adhese Universal VivaPen, Clearfil Universal Bond Quick, G-Premio Bond, Prime&Bond active, and Scotchbond Universal Plus). Two-bottle systems (OptiBond FL and G2-Bond Universal) were used as control. Scanning electron microscopy was conducted of the bonding interface. RESULTS Significant differences in shear bond strength values were found among the five evaluated universal adhesives. Lowest shear bond strength values were observed for 2-hydroxyethylmethacrylate (HEMA)-free systems. Thermocyclic aging did not significantly reduce shear bond strength values indicating that the initial bond remains stable. CONCLUSIONS The clinical use of universal adhesives Adhese Universal VivaPen, Clearfil Universal Bond Quick, and Scotchbond Universal Plus can be encouraged as they provided comparable or even better shear bond strength values than the two-bottle controls. CLINICAL SIGNIFICANCE Universal adhesives that were developed for the same indication and approved for clinical use demonstrated variety in shear bond strength values. When applied in the selective enamel etching mode, a stable bond can be expected from adhesives containing HEMA and monomers with phosphate groups.
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Affiliation(s)
- Marco Jäggi
- Biomaterials and Technology, Department of Reconstructive Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, Basel, Switzerland
| | - Sabrina Karlin
- Biomaterials and Technology, Department of Reconstructive Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, Basel, Switzerland
| | - Nicola U Zitzmann
- Biomaterials and Technology, Department of Reconstructive Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, Basel, Switzerland
| | - Nadja Rohr
- Biomaterials and Technology, Department of Reconstructive Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, Basel, Switzerland
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10
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Guerra LHA, Campos SGP, Taboga SR, Vilamaior PSL. Prostatic morphological changes throughout life: Cytochemistry as a tool to reveal tissue aging markers. Microsc Res Tech 2024; 87:1020-1030. [PMID: 38186358 DOI: 10.1002/jemt.24489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/29/2023] [Accepted: 12/20/2023] [Indexed: 01/09/2024]
Abstract
The prostate undergoes normal or pathological morphological changes throughout life. An understanding of these changes is fundamental for the comprehension of aging-related pathological processes such as benign prostatic hyperplasia (BPH) and cancer. In the present study, we show some of these morphological changes, as well as histochemical techniques like Weigert's resorcin-fuchsin method, Picrosirius Red, and Gömöri's reticulin for use as tools in the study of prostate tissue under light microscopy. For this purpose, prostates of the Mongolian gerbil (n = 9), an experimental model that develops BPH spontaneously, were analyzed at three life stages: young (1 month old), adult (3 months old), and old (15 months old). The results showed that fibrillar components such as collagen, and reticular and elastic fibers, change throughout life. In young animals, the prostate has cuboidal epithelium surrounded by thin layers of smooth muscle, continuous collagen fibers, winding reticular fibers, and sporadic elastic fibers. With adulthood, the epithelium becomes columnar, encircled by compacted muscle cells among slender collagen fibers, elongated reticular fibers, and linear elastic fibers. In aging individuals, the prostate's epithelium stratifies, surrounded by thick muscle layers among dense collagen fibers, disordered reticular fibers, and elastic fibers in different planes. We also identified a few accumulations of lipid droplets and lipofuscin granules in adult animals and high accumulation in old animals evidenced by Oil red O and Gömöri-Halmi techniques, respectively. The histochemical techniques presented here have been demonstrated to be useful and accessible tools in prostate studies. RESEARCH HIGHLIGHTS: Cytochemical techniques to study prostate morphology. The prostate changes with age.
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Affiliation(s)
- Luiz Henrique Alves Guerra
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University - UNESP, São José do Rio Preto, São Paulo, Brazil
| | - Silvana Gisele Pegorin Campos
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University - UNESP, São José do Rio Preto, São Paulo, Brazil
| | - Sebastião Roberto Taboga
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University - UNESP, São José do Rio Preto, São Paulo, Brazil
- Department of Functional and Structural Biology, Institute of Biology, University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | - Patricia Simone Leite Vilamaior
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University - UNESP, São José do Rio Preto, São Paulo, Brazil
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11
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Fastame MC, Brandas B, Pau M. Cognitive Reserve, Physical Reserve, and Cognitive Efficiency of Older People Living in the Sardinian Blue Zone. An Exploratory Study. J Appl Gerontol 2024; 43:481-489. [PMID: 38095150 DOI: 10.1177/07334648231217651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024] Open
Abstract
This study mainly intended to disentangle the role played by physical reserve as a mediator of the relationship between cognitive reserve and global cognitive functioning in older people aging well. A sample of 120 67-101-year-old community-dwellers was recruited in the Sardinian Blue Zone, an area characterized by the extreme longevity of its inhabitants. Each respondent completed a battery of tests examining cognitive functioning, perceived physical health, cognitive reserve, and physical reserve (objectively assessed through accelerometric-derived measures). Significant associations were found among measures of cognitive reserve, physical reserve, perceived physical health, and cognition. Besides, two mediational analyses pointed out that physical reserve and distinct indexes of cognitive reserve explained 18% and 32% of the variance associated with global cognitive functioning. In conclusion, the combination of high cognitive reserve and more preserved motor functioning seems to contribute to the maintenance of healthy cognition in older people aging well.
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12
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Yang L, Wang S, Chen Y, Liang Y, Chen T, Wang Y, Fu X, Wang S. Effects of Age on the Auditory Cortex During Speech Perception in Noise: Evidence From Functional Near-Infrared Spectroscopy. Ear Hear 2024; 45:742-752. [PMID: 38268081 PMCID: PMC11008455 DOI: 10.1097/aud.0000000000001460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/23/2023] [Indexed: 01/26/2024]
Abstract
OBJECTIVES Age-related speech perception difficulties may be related to a decline in central auditory processing abilities, particularly in noisy or challenging environments. However, how the activation patterns related to speech stimulation in different noise situations change with normal aging has yet to be elucidated. In this study, we aimed to investigate the effects of noisy environments and aging on patterns of auditory cortical activation. DESIGN We analyzed the functional near-infrared spectroscopy signals of 20 young adults, 21 middle-aged adults, and 21 elderly adults, and evaluated their cortical response patterns to speech stimuli under five different signal to noise ratios (SNRs). In addition, we analyzed the behavior score, activation intensity, oxyhemoglobin variability, and dominant hemisphere, to investigate the effects of aging and noisy environments on auditory cortical activation. RESULTS Activation intensity and oxyhemoglobin variability both showed a decreasing trend with aging at an SNR of 0 dB; we also identified a strong correlation between activation intensity and age under this condition. However, we observed an inconsistent activation pattern when the SNR was 5 dB. Furthermore, our analysis revealed that the left hemisphere may be more susceptible to aging than the right hemisphere. Activation in the right hemisphere was more evident in older adults than in the left hemisphere; in contrast, younger adults showed leftward lateralization. CONCLUSIONS Our analysis showed that with aging, auditory cortical regions gradually become inflexible in noisy environments. Furthermore, changes in cortical activation patterns with aging may be related to SNR conditions, and that understandable speech with a low SNR ratio but still understandable may induce the highest level of activation. We also found that the left hemisphere was more affected by aging than the right hemisphere in speech perception tasks; the left-sided dominance observed in younger individuals gradually shifted to the right hemisphere with aging.
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Affiliation(s)
- Liu Yang
- Beijing Institute of Otolaryngology, Otolaryngology-Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- These authors contributed equally to this work
| | - Songjian Wang
- Beijing Institute of Otolaryngology, Otolaryngology-Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- These authors contributed equally to this work
| | - Younuo Chen
- Beijing Institute of Otolaryngology, Otolaryngology-Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Ying Liang
- School of Biomedical Engineering, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing, China
| | - Ting Chen
- School of Biomedical Engineering, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing, China
| | - Yuan Wang
- Beijing Institute of Otolaryngology, Otolaryngology-Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Xinxing Fu
- Beijing Institute of Otolaryngology, Otolaryngology-Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Shuo Wang
- Beijing Institute of Otolaryngology, Otolaryngology-Head and Neck Surgery, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Tongren Hospital, Capital Medical University, Beijing, China
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13
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Suchy Y, Gereau Mora M, Brothers SL, DesRuisseaux LA. Six elements test vs D-KEFS: what does "Ecological Validity" tell us? J Int Neuropsychol Soc 2024; 30:350-359. [PMID: 38465734 DOI: 10.1017/s1355617723000723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
OBJECTIVE Extensive research shows that tests of executive functioning (EF) predict instrumental activities of daily living (IADLs) but are nevertheless often criticized for having poor ecological validity. The Modified Six Elements Test (MSET) is a pencil-and-paper test that was developed to mimic the demands of daily life, with the assumption that this would result in a more ecologically valid test. Although the MSET has been extensively validated in its ability to capture cognitive deficits in various populations, support for its ability to predict functioning in daily life is mixed. This study aimed to examine the MSET's ability to predict IADLs assessed via three different modalities relative to traditional EF measures. METHOD Participants (93 adults aged 60 - 85) completed the MSET, traditional measures of EF (Delis-Kaplan Executive Function System; D-KEFS), and self-reported and performance-based IADLs in the lab. Participants then completed three weeks of IADL tasks at home, using the Daily Assessment of Independent Living and Executive Skills (DAILIES) protocol. RESULTS The MSET predicted only IADLs completed at home, while the D-KEFS predicted IADLs across all three modalities. Further, the D-KEFS predicted home-based IADLs beyond the MSET when pitted against each other, whereas the MSET did not contribute beyond the D-KEFS. CONCLUSIONS Traditional EF tests (D-KEFS) appear to be superior to the MSET in predicting IADLs in community-dwelling older adults. The present results argue against replacing traditional measures with the MSET when addressing functional independence of generally high-functioning and cognitive healthy older adult patients.
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Affiliation(s)
- Yana Suchy
- Department of Psychology, University of Utah, Salt Lake City, UT, USA
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14
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Boccardi V, Orr ME, Polidori MC, Ruggiero C, Mecocci P. Focus on senescence: Clinical significance and practical applications. J Intern Med 2024; 295:599-619. [PMID: 38446642 DOI: 10.1111/joim.13775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
The older population is increasing worldwide, and life expectancy is continuously rising, predominantly thanks to medical and technological progress. Healthspan refers to the number of years an individual can live in good health. From a gerontological viewpoint, the mission is to extend the life spent in good health, promoting well-being and minimizing the impact of aging-related diseases to slow the aging process. Biologically, aging is a malleable process characterized by an intra- and inter-individual heterogeneous and dynamic balance between accumulating damage and repair mechanisms. Cellular senescence is a key component of this process, with senescent cells accumulating in different tissues and organs, leading to aging and age-related disease susceptibility over time. Removing senescent cells from the body or slowing down the burden rate has been proposed as an efficient way to reduce age-dependent deterioration. In animal models, senotherapeutic molecules can extend life expectancy and lifespan by either senolytic or senomorphic activity. Much research shows that dietary and physical activity-driven lifestyle interventions protect against senescence. This narrative review aims to summarize the current knowledge on targeting senescent cells to reduce the risk of age-related disease in animal models and their translational potential for humans. We focused on studies that have examined the potential role of senotherapeutics in slowing the aging process and modifying age-related disease burdens. The review concludes with a general discussion of the mechanisms underlying this unique trajectory and its implications for future research.
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Affiliation(s)
- Virginia Boccardi
- Division of Gerontology and Geriatrics, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Miranda Ethel Orr
- Department of Internal Medicine, Section on Gerontology and Geriatric Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
- Salisbury VA Medical Center, Salisbury, North Carolina, USA
| | - M Cristina Polidori
- Ageing Clinical Research, Department II of Internal Medicine and Center for Molecular Medicine Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress-Responses in Aging-Associated Diseases (CECAD), Faculty of Medicine, University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Carmelinda Ruggiero
- Division of Gerontology and Geriatrics, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Patrizia Mecocci
- Division of Gerontology and Geriatrics, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
- Division of Clinical Geriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
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15
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Dremin V, Zharkikh E, Lopushenko I, Marcinkevics Z, Bykov A, Meglinski I. Incremental residual polarization caused by aging in human skin. J Biomed Opt 2024; 29:052912. [PMID: 38077500 PMCID: PMC10704186 DOI: 10.1117/1.jbo.29.5.052912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 09/01/2023] [Accepted: 10/19/2023] [Indexed: 12/18/2023]
Abstract
Significance The study of the effect of aging on the optical properties of biological tissues, in particular polarization, is important in the development of new diagnostic approaches. Aim This work aims to provide a comprehensive analysis of the factors and mechanisms that contribute to the alteration of skin polarization properties caused by aging, using polarization-sensitive hyperspectral imaging measurements and Monte Carlo simulation. Approach Our investigation involved both experimental studies of in vivo human skin of volunteers of different ages and computational modeling that accounted for changes in the absorption and scattering properties of the skin model. Specifically, we analyzed alterations in the degree of linear polarization (DOLP) to better understand the impact of aging on skin polarization properties. Results A statistically significant increase in the DOLP was found for the elderly group. At the same time, there was no correlation between changes in polarization and the calculated blood volume fraction parameter for different ages. According to the simulation results, it was also found that a change in the scattering properties of biological tissues has a more significant effect on the change in polarizing light compared to the change in absorption. Conclusions The results of the work prove that the sensitivity of polarization imaging to age- or pathological-related skin changes may be primarily due to changes in scattering, which in turn is associated with changes in the collagen fibers of the dermis. The proposed technique shows promise for in vivo non-invasive real-time assessment of age-associated skin changes and can also be extended to monitor changes associated with the development of age-related pathologies.
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Affiliation(s)
- Viktor Dremin
- University of Oulu, Opto-Electronics and Measurement Techniques Unit, Faculty of Information Technology and Electrical Engineering, Oulu, Finland
- Aston University, College of Engineering and Physical Sciences, Birmingham, United Kingdom
| | - Elena Zharkikh
- University of Oulu, Opto-Electronics and Measurement Techniques Unit, Faculty of Information Technology and Electrical Engineering, Oulu, Finland
| | - Ivan Lopushenko
- University of Oulu, Opto-Electronics and Measurement Techniques Unit, Faculty of Information Technology and Electrical Engineering, Oulu, Finland
| | | | - Alexander Bykov
- University of Oulu, Opto-Electronics and Measurement Techniques Unit, Faculty of Information Technology and Electrical Engineering, Oulu, Finland
| | - Igor Meglinski
- University of Oulu, Opto-Electronics and Measurement Techniques Unit, Faculty of Information Technology and Electrical Engineering, Oulu, Finland
- Aston University, College of Engineering and Physical Sciences, Birmingham, United Kingdom
- I.M. Sechenov First Moscow State Medical University, Human Anatomy and Histology Department, N.V. Sklifosovsky Institute of Clinical Medicine, Moscow, Russia
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16
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Hamilton LJ, Krendl AC. Evidence for the role of affective theory of mind in face-name associative memory. Neuropsychol Dev Cogn B Aging Neuropsychol Cogn 2024; 31:417-437. [PMID: 36999681 PMCID: PMC10544671 DOI: 10.1080/13825585.2023.2194607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 03/20/2023] [Indexed: 04/01/2023]
Abstract
Poor face-name recall has been associated with age-related impairments in cognitive functioning, namely declines in episodic memory and executive control. However, the role of social cognitive function - the ability to remember, process, and store information about others - has been largely overlooked in this work. Extensive work has shown that social and nonsocial cognitive processes rely on unique, albeit overlapping, mechanisms. In the current study, we explored whether social cognitive functioning - specifically the ability to infer other people's mental states (i.e., theory of mind) - facilitates better face-name learning. To do this, a sample of 289 older and young adults completed a face-name learning paradigm along with standard assessments of episodic memory and executive control alongside two theory of mind measures, one static and one dynamic. In addition to expected age differences, several key effects emerged. Age-related differences in recognition were explained by episodic memory, not social cognition. However, age effects in recall were explained by both episodic memory and social cognition, specifically affective theory of mind in the dynamic task. Altogether, we contend that face-name recall can be supported by social cognitive functioning, namely understanding emotions. While acknowledging the influence of task characteristics (i.e., lures, target ages), we interpret these findings in light of existing accounts of age differences in face-name associative memory.
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Affiliation(s)
- Lucas J Hamilton
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - Anne C Krendl
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
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17
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Schnitter JM, Hauser J. The Value of Screening for a History of Incarceration in the Palliative Care Setting. Am J Hosp Palliat Care 2024; 41:468-470. [PMID: 38556759 DOI: 10.1177/10499091231186400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024] Open
Abstract
The United States (US) has one of the highest rates of incarceration in the world. Due to the aging of the US population as a whole and limited opportunities for early release, the proportion of older people in prison continues to rise. Some correctional health systems have adopted geriatric and palliative care principles to better care for this aging population, many of whom die in prison. However, not everyone who grows old in prison will die behind bars. In this article, we explore existing literature that highlights the unique physical, cognitive, and psychosocial challenges that formerly incarcerated patients face. We proceed to argue that palliative care providers should screen for a history of incarceration to identify and address the needs of this patient population. We also offer strategies to create a safe, welcoming environment to discuss past traumas related to these patients' time in prison.
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Affiliation(s)
| | - Joshua Hauser
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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18
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Haustein M, Thomas EBK, Scheer K, Denburg NL. Interoception, Affect, and Cognition in Older Adults. Exp Aging Res 2024; 50:279-295. [PMID: 36871576 PMCID: PMC10477322 DOI: 10.1080/0361073x.2023.2183704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 02/20/2023] [Indexed: 03/07/2023]
Abstract
Interoception is the detection of signals that arise from within the body. Interoceptive sensitivity has been found to be associated with affect and cognition among younger adults, and examination of these relationships in older adult samples is beginning to emerge. Here, we take an exploratory approach to determine how demographic, affective, and cognitive variables relate to interoceptive sensitivity in neurologically normal older adults, aged 60-91 years old. Ninety-one participants completed a comprehensive neuropsychological battery, self-report questionnaires, and a heartbeat counting task to measure interoceptive sensitivity. Our findings revealed several relationships: 1) interoceptive sensitivity was inversely correlated with measures of positive emotionality: participants with higher interoceptive sensitivity tended to have lower levels of positive affect and trait extraversion; 2) interoceptive sensitivity was found to positively correlate with cognition: participants who performed better on the heartbeat-counting task also tended to perform better on a measure of delayed verbal memory; and 3) when examining the predictors of interoceptive sensitivity in a single hierarchical regression model, higher interoceptive sensitivity was related to: higher time estimation, lower positive affect, lower extraversion, and higher verbal memory. In total, the model accounted for 38% of the variability in interoceptive sensitivity (R2 = .38). These results suggest that, among older adults, interoceptive sensitivity is facilitative for aspects of cognition but perhaps disruptive for certain aspects of emotional experience.
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Affiliation(s)
- Marcus Haustein
- Department of Neurology, Division of Cognitive Neuroscience, University of Iowa Carver College of Medicine, Iowa, USA
- Department of Emergency Medicine, Great River Health System, West Burlington, Iowa, USA
| | - Emily B K Thomas
- Department of Psychological and Brain Sciences, University of Iowa College of Liberal Arts and Sciences, Iowa, USA
| | - Kodi Scheer
- Department of Neurology, Division of Cognitive Neuroscience, University of Iowa Carver College of Medicine, Iowa, USA
| | - Natalie L Denburg
- Department of Neurology, Division of Cognitive Neuroscience, University of Iowa Carver College of Medicine, Iowa, USA
- Department of Psychological and Brain Sciences, University of Iowa College of Liberal Arts and Sciences, Iowa, USA
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19
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Tran SHN, Fernandes MA. Age differences in effectiveness of encoding techniques on memory. Neuropsychol Dev Cogn B Aging Neuropsychol Cogn 2024; 31:479-495. [PMID: 37067161 DOI: 10.1080/13825585.2023.2202377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 04/06/2023] [Indexed: 04/18/2023]
Abstract
We compared the effectiveness of different encoding techniques across the adult age range. Three hundred participants: 100 younger, 100 middle-aged, and 100 older adults, were asked to encode a set of visually presented concrete and abstract words. Participants were shown target words one at a time, along with prompts (randomly and intermixed, within-subject) to either silently read, read aloud, write, or draw a picture of the target, for a duration of 10-seconds each. On a later free recall test, participants were given 2-minutes to type all the words they could remember from the encoding phase. Across age groups, we showed that drawing, writing, and reading aloud as encoding techniques yielded better memory than silently reading words, with drawing leading to the largest boost. While memory performance did decrease as age increased, it interacted with the encoding technique. Of note, there were no differences in memory performance in middle-aged compared to young adults. Importantly, age differences in memory emerged only when drawing was used as the encoding strategy, in line with previously reported age-related deficits in generating imagery, or integrating it with motoric processes. Despite this, concrete relative to abstract words that were drawn or written during encoding were better retained, regardless of age, suggesting these techniques facilitate formation of age-invariant visuo-spatial representations. Our findings suggest that whether age differences in memory emerge depends on the strategy used at encoding, and the type of information being encoded.
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Affiliation(s)
- Sophia H N Tran
- Department of Psychology, University of Waterloo, Waterloo, Canada
| | - Myra A Fernandes
- Department of Psychology, University of Waterloo, Waterloo, Canada
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20
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Stein AL, Tolle KA, Stover AN, Shidler MD, Krikorian R. Detecting mild cognitive impairment remotely with the modified memory impairment screen by telephone. Neuropsychol Dev Cogn B Aging Neuropsychol Cogn 2024; 31:404-416. [PMID: 36951391 DOI: 10.1080/13825585.2023.2189688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 03/07/2023] [Indexed: 03/24/2023]
Abstract
The original Memory Impairment Screen by Telephone (MIST) was designed to identify individuals with dementia but was relatively ineffective for identification of less severe impairment observed in mild cognitive impairment (MCI). We expanded the original MIST to create a modified instrument (mMIST) with greater sensitivity to less severe memory impairment. Older men and women with subjective cognitive decline were assessed by phone with the mMIST and subsequently classified independently with MCI or non-pathological cognitive decline. Participants with MCI produced lower scores on the mMIST than did participants without MCI, 10.8 ± 2.7 vs 13.3 ± 1.3, t = 5.68, p < 0.001, and performance on the mMIST predicted performances on the California Verbal Learning Test (CVLT), Verbal Paired Associate Learning Test (VPAL), Montreal Cognitive Assessment (MoCA) total score, and MoCA memory index score, p < 0.001. Receiver operating characteristic (ROC) analyses identified the optimal cut score on the mMIST to distinguish participants with and without MCI with Sensitivity = 73.1%, Specificity = 79.1%, and AUC = 0.79. Predictive values for distinguishing the amnestic form of MCI (aMCI) from non-amnestic MCI were Sensitivity = 81.8%, Specificity = 30%, and AUC = 0.82. These findings indicate that the mMIST is a valid screening instrument for identifying MCI. It can be administered remotely at low cost and low participant burden. Also, the mMIST has potential utility for remote cross-sectional and longitudinal evaluation in research and clinical contexts. Further investigation is indicated to corroborate its utility for assessment of aging patients and research participants.
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Affiliation(s)
- Amanda L Stein
- Department of Psychiatry & Behavioral Neuroscience, University of Cincinnati Academic Health Center, Cincinnati, OH, US
| | - Kathryn A Tolle
- Department of Psychiatry & Behavioral Neuroscience, University of Cincinnati Academic Health Center, Cincinnati, OH, US
- Neurobehavioral Consultants LLC, Indianapolis, IN, US Current affiliation
| | - Amanda N Stover
- Department of Psychiatry & Behavioral Neuroscience, University of Cincinnati Academic Health Center, Cincinnati, OH, US
- Department of Public Health Sciences, Clemson University, Clemson, SC, US Current affiliation
| | - Marcelle D Shidler
- Department of Psychiatry & Behavioral Neuroscience, University of Cincinnati Academic Health Center, Cincinnati, OH, US
| | - Robert Krikorian
- Department of Psychiatry & Behavioral Neuroscience, University of Cincinnati Academic Health Center, Cincinnati, OH, US
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Vincent G, Adachi JD, Schemitsch E, Tarride JE, Ho N, Wani RJ, Brown JP. Postfracture survival in a population-based study of adults aged ≥66 yr: a call to action at hospital discharge. JBMR Plus 2024; 8:ziae002. [PMID: 38596507 PMCID: PMC11001756 DOI: 10.1093/jbmrpl/ziae002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 11/11/2023] [Accepted: 11/17/2023] [Indexed: 04/11/2024] Open
Abstract
Postfracture survival rates provide prognostic information but are rarely reported along with other mortality outcomes in adults aged ≥50 yr. The timing of survival change following a fracture also needs to be further elucidated. This population-based, matched-cohort, retrospective database study examined 98 474 patients (73% women) aged ≥66 yr with an index fracture occurring at an osteoporotic site (hip, clinical vertebral, proximal non-hip non-vertebral [pNHNV], and distal non-hip non-vertebral [dNHNV]) from 2011 to 2015, who were matched (1:1) to nonfracture individuals based on sex, age, and comorbidities. All-cause 1- and 5-yr overall survival and relative survival ratios (RSRs) were assessed, and time trends in survival changes were characterized starting immediately after a fracture. In both sexes, overall survival was markedly decreased over 6 yr of follow-up after hip, vertebral, and pNHNV fractures, and as expected, worse survival rates were observed in older patients and males. The lowest 5-yr RSRs were observed after hip fractures in males (66-85 yr, 51.9%-63.9%; ≥86 yr, 34.5%), followed by vertebral fractures in males (66-85 yr, 53.2%-69.4%; ≥86 yr, 35.5%), and hip fractures in females (66-85 yr, 69.8%-79.0%; ≥86 yr, 52.8%). Although RSRs did not decrease as markedly after dNHNV fractures in younger patients, relatively low 5-yr RSRs were observed in females (75.9%) and males (69.5%) aged ≥86 yr. The greatest reduction in survival occurred within the initial month after hip, vertebral, and pNHNV fractures, indicating a high relative impact of short-term factors, with survival-reduction effects persisting over time. Therefore, the most critical period for implementing interventions aimed at improving post-fracture prognosis appears to be immediately after a fracture; however, considering the immediate need for introducing such interventions, primary fracture prevention is also crucial to prevent the occurrence of the initial fracture in high-risk patients.
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Affiliation(s)
- Geneviève Vincent
- Medical Affairs Division, Amgen Canada Inc., Mississauga, ON L5N 0A4, Canada
| | - Jonathan D Adachi
- Department of Medicine, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Emil Schemitsch
- Division of Orthopaedic Surgery, Western University, London, ON N6A 3K7, Canada
| | - Jean-Eric Tarride
- McMaster Chair in Health Technology Management, Department of Health Research Methods, Evidence and Impact (HEI), McMaster University, Hamilton, ON L8S 4L8, Canada
- Center for Health Economics and Policy Analysis (CHEPA), McMaster University, Hamilton, ON L8S 4L8, Canada
- Programs for Assessment of Technology in Health (PATH), The Research Institute of St. Joe's Hamilton, St. Joseph's Healthcare Hamilton, Hamilton, ON L8N 4A6, Canada
| | - Nathan Ho
- Medical Affairs Division, Amgen Canada Inc., Mississauga, ON L5N 0A4, Canada
| | - Rajvi J Wani
- Research Division, Amgen Canada Inc., Mississauga, ON L5N 0A4, Canada
| | - Jacques P Brown
- CHU de Québec Research Centre and Laval University, 2705 Boulevard Laurier, TR-83, Québec, QC L5N 0A4, Canada
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Zheng Q, Wang F, Nie C, Zhang K, Sun Y, Al-Ansi W, Wu Q, Wang L, Du J, Li Y. Elevating the significance of legume intake: A novel strategy to counter aging-related mitochondrial dysfunction and physical decline. Compr Rev Food Sci Food Saf 2024; 23:e13342. [PMID: 38634173 DOI: 10.1111/1541-4337.13342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/11/2024] [Accepted: 03/19/2024] [Indexed: 04/19/2024]
Abstract
Mitochondrial dysfunction increasingly becomes a target for promoting healthy aging and longevity. The dysfunction of mitochondria with age ultimately leads to a decline in physical functions. Among them, biogenesis dysfunction and the imbalances in the metabolism of reactive oxygen species and mitochondria as signaling organelles in the aging process have aroused our attention. Dietary intervention in mitochondrial dysfunction and physical decline during aging processes is essential, and greater attention should be directed toward healthful legume intake. Legumes are constantly under investigation for their nutritional and bioactive properties, and their consumption may yield antiaging and mitochondria-protecting benefits. This review summarizes mitochondrial dysfunction with age, discusses the benefits of legumes on mitochondrial function, and introduces the potential role of legumes in managing aging-related physical decline. Additionally, it reveals the benefits of legume intake for the elderly and offers a viable approach to developing legume-based functional food.
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Affiliation(s)
- Qingwei Zheng
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Feijie Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Chenzhipeng Nie
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Kuiliang Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Yujie Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Waleed Al-Ansi
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Qiming Wu
- Nutrilite Health Institute, Shanghai, China
| | - Li Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Jun Du
- Nutrilite Health Institute, Shanghai, China
| | - Yan Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
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Bernal N, Olivera J, Suhrcke M. The effects of social pensions on nutrition-related health outcomes of the poor: Quasi-experimental evidence from Peru. Health Econ 2024; 33:971-991. [PMID: 38282052 DOI: 10.1002/hec.4806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 12/04/2023] [Accepted: 12/19/2023] [Indexed: 01/30/2024]
Abstract
This paper exploits the discontinuity around a welfare index of eligibility to assess the impact of Peru's social pension program Pension 65 on nutrition-related health outcomes among elderly poor individuals. Overall, we find evidence of how a relatively inexpensive program can produce improvements in anemia and nutrition-related mortality risk markers. The effects appear to be driven by plausible underlying mechanisms, including via improved nutritional quality as well as greater food expenditures and healthcare utilization. These positive effects are only modestly countered by tentative signs of an increased obesity risk among women in the short term (<2 years), but not beyond this term. As the program evolves further, policymakers need to confront the challenge of continuing to ensure the health benefits in terms of reducing nutritional deficits while avoiding potential undesirable side effects in terms of over-nutrition in Peru. The findings may serve to highlight the wider benefits of similar pension policies for the poor also in other middle income countries, well beyond the immediate economic welfare effects that the policies have primarily been designed for.
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Affiliation(s)
- Noelia Bernal
- Department of Economics, Universidad del Pacífico, Lima, Peru
- Netspar, Tilburg, Netherlands
| | - Javier Olivera
- Luxembourg Institute of Socio-Economic Research (LISER), Esch-sur-Alzette, Luxembourg
- Department of Economics, Pontificia Universidad Católica del Perú (PUCP), San Miguel, Peru
| | - Marc Suhrcke
- Luxembourg Institute of Socio-Economic Research (LISER), Esch-sur-Alzette, Luxembourg
- Centre for Health Economics, University of York, York, UK
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24
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Kilanowski-Doroh IM, McNally AB, Wong T, Visniauskas B, Blessinger SA, Sugi AI, Richard C, Diaz Z, Horton A, Natale CA, Ogola BO, Lindsey SH. Ovariectomy-Induced Arterial Stiffening Differs From Vascular Aging and Is Reversed by GPER Activation. Hypertension 2024; 81:e51-e62. [PMID: 38445498 PMCID: PMC11023783 DOI: 10.1161/hypertensionaha.123.22024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 02/16/2024] [Indexed: 03/07/2024]
Abstract
BACKGROUND Arterial stiffness is a cardiovascular risk factor and dramatically increases as women transition through menopause. The current study assessed whether a mouse model of menopause increases arterial stiffness in a similar manner to aging and whether activation of the G-protein-coupled estrogen receptor could reverse stiffness. METHODS Female C57Bl/6J mice were ovariectomized at 10 weeks of age or aged to 52 weeks, and some mice were treated with G-protein-coupled estrogen receptor agonists. RESULTS Ovariectomy and aging increased pulse wave velocity to a similar extent independent of changes in blood pressure. Aging increased carotid wall thickness, while ovariectomy increased material stiffness without altering vascular geometry. RNA-sequencing analysis revealed that ovariectomy downregulated smooth muscle contractile genes. The enantiomerically pure G-protein-coupled estrogen receptor agonist, LNS8801, reversed stiffness in ovariectomy mice to a greater degree than the racemic agonist G-1. In summary, ovariectomy and aging induced arterial stiffening via potentially different mechanisms. Aging was associated with inward remodeling, while ovariectomy-induced material stiffness independent of geometry and a loss of the contractile phenotype. CONCLUSIONS This study enhances our understanding of the impact of estrogen loss on vascular health in a murine model and warrants further studies to examine the ability of LNS8801 to improve vascular health in menopausal women.
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Affiliation(s)
| | | | - Tristen Wong
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
| | - Bruna Visniauskas
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
| | | | | | - Chase Richard
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
- Tulane Brain Institute, Tulane University, New Orleans, LA
| | - Zaidmara Diaz
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
| | - Alec Horton
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
| | | | - Benard O. Ogola
- Vascular Biology Center and Department of Medicine, Medical College of Georgia at Augusta University, Augusta, GA
| | - Sarah H. Lindsey
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
- Tulane Brain Institute, Tulane University, New Orleans, LA
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Oursler KK, Briggs BC, Lozano AJ, Harris NM, Parashar A, Ryan AS, Marconi VC. Association of chronotropic incompetence with reduced cardiorespiratory fitness in older adults with HIV. AIDS 2024; 38:825-833. [PMID: 38578959 PMCID: PMC11003719 DOI: 10.1097/qad.0000000000003840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2024]
Abstract
OBJECTIVE Understanding the physiological drivers of reduced cardiorespiratory fitness in people with HIV (PWH) will inform strategies to optimize healthspan. Chronotropic incompetence is common in heart failure and associated with low cardiorespiratory fitness yet is understudied in PWH. The objective was to determine the prevalence of chronotropic incompetence and its relationship with cardiorespiratory fitness. DESIGN Participants were PWH at least 50 years of age with no prior history of heart failure or coronary heart disease who were enrolled in a randomized exercise trial. Baseline cardiopulmonary exercise testing (CPET) was used to measure cardiorespiratory fitness as peak oxygen consumption (VO2peak) and calculate the chronotropic index from heart rate values. Chronotropic incompetence was defined as an index less than 80%. RESULTS The 74 participants were on average 61 years old, 80% Black or African American, and 93% men. Chronotropic incompetence was present in 31.1%. VO2peak was significantly lower among participants with chronotropic incompetence compared with participants without chronotropic incompetence [mean (SD) ml/min/kg: 20.9 (5.1) vs. 25.0 (4.5), P = 0.001]. Linear regression showed that chronotropic incompetence and age were independent predictors of VO2peak, but smoking and comorbidity were not. The chronotropic index correlated with VO2peak (r = 0.48, P < 0.001). CONCLUSION Among older PWH without heart failure or coronary heart disease, chronotropic incompetence was present in approximately one-third of individuals and was associated with clinically relevant impaired cardiorespiratory fitness. Investigation of chronotropic incompetence in large cohorts which includes PWH and heart failure may contribute to strategies that promote healthy aging with HIV infection and offer a preclinical window for intervention.
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Affiliation(s)
- Krisann K Oursler
- Department of Medicine, Virginia Tech Carilion School of Medicine, Roanoke
- Geriatrics Extended Care, Salem Veterans Affairs Healthcare System, Salem, VA
| | - Brandon C Briggs
- Geriatrics Extended Care, Salem Veterans Affairs Healthcare System, Salem, VA
- Department of Health and Human Performance, Concordia University Chicago, Chicago, IL
| | - Alicia J Lozano
- Department of Statistics, Virginia Polytechnic Institute and State University, Roanoke, VA
| | - Nadine M Harris
- Department of Medicine, Emory University School of Medicine, Atlanta
- Infectious Diseases, VA Atlanta Healthcare System, Decatur, GA
| | - Amitabh Parashar
- Department of Medicine, Virginia Tech Carilion School of Medicine, Roanoke
- Geriatrics Extended Care, Salem Veterans Affairs Healthcare System, Salem, VA
| | - Alice S Ryan
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD
- Baltimore Veterans Affairs Medical Center Geriatric Research, Education, and Clinical Center at the Veterans Affairs Maryland Healthcare System, Baltimore, MD
| | - Vincent C Marconi
- Department of Medicine, Emory University School of Medicine, Atlanta
- Infectious Diseases, VA Atlanta Healthcare System, Decatur, GA
- Department of Global Health, Emory University Rollins School of Public Health, Atlanta, GA, USA
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26
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Mak SS, Alessi CA, Kaufmann CN, Martin JL, Mitchell MN, Ulmer C, Lum HD, McCarthy MS, Smith JP, Fung CH. Pilot RCT Testing A Mailing About Sleeping Pills and Cognitive Behavioral Therapy for Insomnia: Impact on Benzodiazepines and Z-Drugs. Clin Gerontol 2024; 47:452-463. [PMID: 36200403 PMCID: PMC10076445 DOI: 10.1080/07317115.2022.2130849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVES The aim is to pilot a low-touch program for reducing benzodiazepine receptor agonist (BZRA; benzodiazepines, z-drugs) prescriptions among older veterans. METHODS Pilot randomized controlled trial consists of 2,009 veterans aged ≥ 65 years who received BZRA prescriptions from a Veterans Health Administration pharmacy (Colorado or Montana) during the prior 18 months. Active: Arm 1 was a mailed brochure about BZRA risks that also included information about a free, online cognitive behavioral therapy for the insomnia (CBTI) program. Arm 2 was a mailed brochure (same as arm 1) and telephone reinforcement call. Control: Arm 3 was a mailed brochure without insomnia treatment information. Active BZRA prescriptions at follow-up (6 and 12 months) were measured. RESULTS In logistic regression analyses, the odds of BZRA prescription at 6- and 12-month follow-ups were not significantly different for arm 1 or 2 (active) versus arm 3 (control), including models adjusted for demographics and prescription characteristics (p-values >0.36). CONCLUSIONS Although we observed no differences in active BZRA prescriptions, this pilot study provides guidance for conducting a future study, indicating a need for a more potent intervention. A full-scale trial testing an optimized program would provide conclusive results. CLINICAL IMPLICATIONS Mailing information about BZRA risks and CBTI did not affect BZRA prescriptions.
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Affiliation(s)
- Selene S Mak
- Geriatric Research, Education, and Clinical Center, VA Greater Los Angeles Healthcare System, North Hills, California, USA
| | - Cathy A Alessi
- Geriatric Research, Education, and Clinical Center, VA Greater Los Angeles Healthcare System, North Hills, California, USA
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Christopher N Kaufmann
- Department of Health Outcomes and Biomedical Informatics, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Jennifer L Martin
- Geriatric Research, Education, and Clinical Center, VA Greater Los Angeles Healthcare System, North Hills, California, USA
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Michael N Mitchell
- Geriatric Research, Education, and Clinical Center, VA Greater Los Angeles Healthcare System, North Hills, California, USA
| | - Christi Ulmer
- Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, North Carolina, USA
- Durham VA Center of Innovation to Accelerate Discovery and Practice Transformation (ADAPT), Durham, North Carolina, USA
| | - Hillary D Lum
- Division of Geriatric Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, California, USA
| | - Michaela S McCarthy
- Denver-Seattle Center of Innovation for Veteran-Centered and Value-Driven Care (COIN), VA Eastern Colorado Health Care System, Denver, California, USA
| | - Jason P Smith
- VA Pharmacy Benefits Management, VA Rocky Mountain Network, Glendale, California, USA
| | - Constance H Fung
- Geriatric Research, Education, and Clinical Center, VA Greater Los Angeles Healthcare System, North Hills, California, USA
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
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Camarda ND, Ibarrola J, Biwer LA, Jaffe IZ. Mineralocorticoid Receptors in Vascular Smooth Muscle: Blood Pressure and Beyond. Hypertension 2024; 81:1008-1020. [PMID: 38426347 PMCID: PMC11023801 DOI: 10.1161/hypertensionaha.123.21358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
After half a century of evidence suggesting the existence of mineralocorticoid receptors (MR) in the vasculature, the advent of technology to specifically knockout the MR from smooth muscle cells (SMCs) in mice has elucidated contributions of SMC-MR to cardiovascular function and disease, independent of the kidney. This review summarizes the latest understanding of the molecular mechanisms by which SMC-MR contributes to (1) regulation of vasomotor function and blood pressure to contribute to systemic and pulmonary hypertension; (2) vascular remodeling in response to hypertension, vascular injury, obesity, and aging, and the impact on vascular calcification; and (3) cardiovascular pathologies including aortic aneurysm, heart valve dysfunction, and heart failure. Data are reviewed from in vitro studies using SMCs and in vivo findings from SMC-specific MR-knockout mice that implicate target genes and signaling pathways downstream of SMC-MR. By regulating expression of the L-type calcium channel subunit Cav1.2 and angiotensin II type-1 receptor, SMC-MR contributes to myogenic tone and vasoconstriction, thereby contributing to systemic blood pressure. MR activation also promotes SMC proliferation, migration, production and degradation of extracellular matrix, and osteogenic differentiation by regulating target genes including connective tissue growth factor, osteopontin, bone morphogenetic protein 2, galectin-3, and matrix metallopeptidase-2. By these mechanisms, SMC-MR promotes disease progression in models of aging-associated vascular stiffness, vascular calcification, mitral and aortic valve disease, pulmonary hypertension, and heart failure. While rarely tested, when sexes were compared, the mechanisms of SMC-MR-mediated disease were sexually dimorphic. These advances support targeting SMC-MR-mediated mechanisms to prevent and treat diverse cardiovascular disorders.
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Affiliation(s)
- Nicholas D. Camarda
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA, USA
| | - Jaime Ibarrola
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA, USA
| | - Lauren A. Biwer
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA, USA
- Vascular Biology and Therapeutics Program, Yale School of Medicine, New Haven, CT, USA
| | - Iris Z. Jaffe
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA, USA
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Dai K, Geng Z, Zhang W, Wei X, Wang J, Nie G, Liu C. Biomaterial design for regenerating aged bone: materiobiological advances and paradigmatic shifts. Natl Sci Rev 2024; 11:nwae076. [PMID: 38577669 PMCID: PMC10989671 DOI: 10.1093/nsr/nwae076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 01/04/2024] [Accepted: 02/26/2024] [Indexed: 04/06/2024] Open
Abstract
China's aging demographic poses a challenge for treating prevalent bone diseases impacting life quality. As bone regeneration capacity diminishes with age due to cellular dysfunction and inflammation, advanced biomaterials-based approaches offer hope for aged bone regeneration. This review synthesizes materiobiology principles, focusing on biomaterials that target specific biological functions to restore tissue integrity. It covers strategies for stem cell manipulation, regulation of the inflammatory microenvironment, blood vessel regeneration, intervention in bone anabolism and catabolism, and nerve regulation. The review also explores molecular and cellular mechanisms underlying aged bone regeneration and proposes a database-driven design process for future biomaterial development. These insights may also guide therapies for other age-related conditions, contributing to the pursuit of 'healthy aging'.
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Affiliation(s)
- Kai Dai
- Engineering Research Center for Biomedical Materials of the Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology; Shanghai 200237, China
- Key Laboratory for Ultrafine Materials of the Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
| | - Zhen Geng
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
- National Center for Translational Medicine (Shanghai) SHU Branch, Shanghai University, Shanghai 200444, China
| | - Wenchao Zhang
- Engineering Research Center for Biomedical Materials of the Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology; Shanghai 200237, China
| | - Xue Wei
- Engineering Research Center for Biomedical Materials of the Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology; Shanghai 200237, China
| | - Jing Wang
- Engineering Research Center for Biomedical Materials of the Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology; Shanghai 200237, China
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Centre for Excellence in Nanoscience, National Centre for Nanoscience and Technology, Beijing 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Changsheng Liu
- Engineering Research Center for Biomedical Materials of the Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology; Shanghai 200237, China
- Key Laboratory for Ultrafine Materials of the Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
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Garcia JM, Sehgal J, Thompson JL, Woods SP, Medina LD. The Relationship Between Apathy and Cognitive Impairment Among Hispanic/Latin Americans: A Preferred Reporting Items for Systematic Reviews and Meta-Analyses Systematic Review. J Geriatr Psychiatry Neurol 2024; 37:175-193. [PMID: 37855134 DOI: 10.1177/08919887231207640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
OBJECTIVES The primary aim was to evaluate apathy assessment measures in relation to cognitive impairment among Hispanic/Latin Americans. METHODS A systematic review on the relationship between apathy and cognitive impairment among Hispanic/Latin Americans across normal aging and neurocognitive disorders was conducted according to preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines and using APA PsycInfo, Embase, and PubMed databases. Inclusion criteria required (1) a sample of English or Spanish-speaking adults ages 18 years and older, (2) with measures of apathy, (3) assessment of cognitive functioning or diagnosis of neurocognitive disorder, (4) with at least 18.5% Hispanic/Latin American represented in the sample. RESULTS Only 14 papers met criteria to be included in this review. Of the 12 cross-sectional studies, 9 demonstrated significant associations between increased apathy and cognitive impairment, 1 demonstrated a descriptive difference between apathy and cognitive status (ie, no hypothesis test conducted), while 2 demonstrated null effects. These cross-sectional studies consisted of community and clinic samples of participants across North and South America. Two longitudinal studies conducted in North America demonstrated non-significant associations of apathy with cognitive status. CONCLUSIONS The Neuropsychiatric Inventory (NPI) and Neuropsychiatric Inventory Questionnaire (NPI-Q) apathy subscales were the most used measures for apathy in this review (85.7% of included studies). However, validity evidence from a review of apathy measures has warranted caution against the use of the NPI outside the context of screening for apathy. This potential measurement bias with Hispanic/Latin Americans apathy research limits conclusions drawn from the present review.
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Affiliation(s)
- Joshua M Garcia
- Department of Psychology, University of Houston, Houston, TX, USA
| | - Jai Sehgal
- Department of Psychology, University of Houston, Houston, TX, USA
| | | | | | - Luis D Medina
- Department of Psychology, University of Houston, Houston, TX, USA
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
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30
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Omic H, Eder M. Effect of increasing age and ureteral stent implantation on urinary tract infections after kidney transplantation - update of recent literature. Curr Opin Urol 2024; 34:146-153. [PMID: 38426237 PMCID: PMC10990026 DOI: 10.1097/mou.0000000000001163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
PURPOSE OF REVIEW This review aims to present the recent literature regarding effects of aging and ureteral stent implantation (UrS) on the risk of urinary tract infections (UTIs) in kidney transplant (KTX) recipients. RECENT FINDINGS UTIs in kidney transplant recipients remain a clinical challenge and represent a leading cause of morbidity, hospitalization rates, and mortality. Higher age was described as a significant risk factor for UTIs in several studies including a recent Brazilian analysis, indicating a 3.6%/years of age increase in UTI risk. Subsequently, a large meta-analysis, published in 2023, confirmed the correlation between older age and elevated UTI risk. The Swiss Transplant Cohort Study in 2022, largest of its kind, similarly confirmed a link between advanced age and heightened risk of recurrent UTIs in KTX. A recent prospective study highlighted UrS placement as a modifiable risk factor, emphasizing the need for careful consideration and antibiotic prophylaxis. Additionally, the type of stents played a crucial role, with external stents associated with a 1.69 times higher UTI risk. The challenge of determining optimal UrS removal timing further complicates posttransplant care, with insufficient evidence to guide practices. SUMMARY The aging population of KTX recipients requires a personalized approach to effectively reduce and manage UTIs as one of the most important complications following KTX. Prophylactic stent implantation is successful in lowering ureteral complications, however, is associated with an increased incidence of UTIs. To reduce the increased risk of UTIs, the length of stent insertion requires strict supervision and maintenance.
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Affiliation(s)
- Haris Omic
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
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31
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Molitoris KH, Balu AR, Huang M, Baht GS. The impact of age and sex on the inflammatory response during bone fracture healing. JBMR Plus 2024; 8:ziae023. [PMID: 38560342 PMCID: PMC10978063 DOI: 10.1093/jbmrpl/ziae023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 12/29/2023] [Accepted: 02/12/2024] [Indexed: 04/04/2024] Open
Abstract
Inflammation is thought to be dysregulated with age leading to impaired bone fracture healing. However, broad analyses of inflammatory processes during homeostatic bone aging and during repair are lacking. Here, we assessed changes in inflammatory cell and cytokine profiles in circulation and in bone tissue to identify age- and sex-dependent differences during homeostasis and repair. During homeostatic aging, male mice demonstrated accumulation of CD4+ helper T cells and CD8+ cytotoxic T cells within bone while both pro-inflammatory "M1" and anti-inflammatory "M2" macrophage numbers decreased. Female mice saw no age-associated changes in immune-cell population in homeostatic bone. Concentrations of IL-1β, IL-9, IFNγ, and CCL3/MIP-1α increased with age in both male and female mice, whereas concentrations of IL-2, TNFα, TNFR1, IL-4, and IL-10 increased only in female mice - thus we termed these "age-accumulated" cytokines. There were no notable changes in immune cell populations nor cytokines within circulation during aging. Sex-dependent analysis demonstrated slight changes in immune cell and cytokine levels within bone and circulation, which were lost upon fracture injury. Fracture in young male mice caused a sharp decrease in number of M1 macrophages; however, this was not seen in aged male mice nor in female mice of any age. Injury itself induced a decrease in the number of CD8+ T cells within the local tissue of aged male and of female mice but not of young mice. Cytokine analysis of fractured mice revealed that age-accumulated cytokines quickly dissipated after fracture injury, and did not re-accumulate in newly regenerated tissue. Conversely, CXCL1/KC-GRO, CXCL2/MIP-2, IL-6, and CCL2/MCP-1 acted as "fracture response" cytokines: increasing sharply after fracture, eventually returning to baseline. Collectively, we classify measured cytokines into three groups: (1) age-accumulated cytokines, (2) female-specific age-accumulated cytokines, and (3) fracture response cytokines. These inflammatory molecules represent potential points of intervention to improve fracture healing outcome.
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Affiliation(s)
- Kristin Happ Molitoris
- Department of Orthopaedic Surgery, Duke Molecular Physiology Institute, Department of Pathology, Duke University, Durham, NC 27701, United States
| | - Abhinav Reddy Balu
- Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, United States
| | - Mingjian Huang
- Department of Orthopaedic Surgery, Duke Molecular Physiology Institute, Department of Pathology, Duke University, Durham, NC 27701, United States
| | - Gurpreet Singh Baht
- Department of Orthopaedic Surgery, Duke Molecular Physiology Institute, Department of Pathology, Duke University, Durham, NC 27701, United States
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MacPherson SE, Gilmour VAW. The influence of interruptions and planning on serial everyday multitasking in older adults. Neuropsychol Dev Cogn B Aging Neuropsychol Cogn 2024; 31:496-523. [PMID: 37184382 DOI: 10.1080/13825585.2023.2210814] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 05/02/2023] [Indexed: 05/16/2023]
Abstract
Cognitive aging research has studied the influence of healthy aging on the ability to multitask. Yet, little is known about the factors that might improve or impair serial multitasking performance in older adults. Three experiments involving younger and older adults assessed the impact of interruptions and planning on a prop-based test of multitasking. In Experiment 1, 26 younger adults and 25 older adults' multitasking abilities were assessed; older adults performed significantly more poorly than younger adults. In Experiment 2, 19 younger and 22 older adults were randomly allocated to a group who experienced a one minute unexpected interruption while multitasking or a group with no interruption. The results showed that, when there was an interruption, the age difference disappeared. In Experiment 3, 32 younger and 30 older adults were randomly allocated to a group who were given 3 minutes to write an outline describing how they intended to approach the multitasking task, and another group who were given 3 minutes to label pictures of everyday objects prior to multitasking. Again, when participants were encouraged to plan, no age difference was found. These results highlight the advantage that interruptions and planning might have on serial everyday multitasking performance in older adults.
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Affiliation(s)
- Sarah E MacPherson
- Human Cognitive Neuroscience, Department of Psychology, University of Edinburgh, Edinburgh, UK
| | - Vairi A W Gilmour
- Human Cognitive Neuroscience, Department of Psychology, University of Edinburgh, Edinburgh, UK
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Coyne M, Dellafaille J, Riede T. Postnatal changes in thyroid cartilage shape and cartilage matrix composition are not synchronized in Mus musculus. J Anat 2024; 244:739-748. [PMID: 38303104 PMCID: PMC11021632 DOI: 10.1111/joa.14006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 11/29/2023] [Accepted: 12/29/2023] [Indexed: 02/03/2024] Open
Abstract
The study was conducted to quantify laryngeal cartilage matrix composition and to investigate its relationship with cartilage shape in a mouse model. A sample of 30 mice (CD-1 mouse, Mus musculus) from five age groups (postnatal Days 2, 21, 90, 365, and 720) were used. Three-dimensional mouse laryngeal thyroid cartilage reconstructions were generated from contrast-enhanced micro-computed tomography (CT) image stacks. Cartilage matrix composition was estimated as Hounsfield units (HU). HU were determined by overlaying 3D reconstructions as masks on micro-CT image stacks and then measuring the attenuation. Cartilage shape was quantified with landmarks placed on the surface of the thyroid cartilage. Shape differences between the five age groups were analyzed using geometric morphometrics and multiparametric analysis of landmarks. The relationship between HU and shape was investigated with correlational analyses. Among five age groups, HU became higher in older animals. The shape of the thyroid cartilage changes with age throughout the entire life of a mouse. The changes in shape were not synchronized with changes in cartilage matrix composition. The thyroid cartilage of young and old M. musculus larynx showed a homogenous mineralization pattern. High-resolution contrast-enhanced micro-CT imaging makes the mouse larynx accessible for analysis of genetic and environmental factors affecting shape and matrix composition.
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Affiliation(s)
- Megan Coyne
- College of Veterinary Medicine, Midwestern University, Glendale, Arizona, USA
| | | | - Tobias Riede
- College of Veterinary Medicine, Midwestern University, Glendale, Arizona, USA
- College of Graduate Studies, Department of Physiology, Midwestern University, Glendale, Arizona, USA
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Tyagi O, Mehta RK. Sex-specific Neural Strategies During Fatiguing Work in Older Adults. Hum Factors 2024; 66:1490-1503. [PMID: 36898850 DOI: 10.1177/00187208231159526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
BACKGROUND Historical biases in ergonomics-related studies have been attributed to lack of participant diversity and sensitivity of measurements to capture variability between diverse groups. We posit that a neuroergonomics approach, that is, study of brain-behavior relationships during fatiguing work, allows for unique insights on sex differences in fatigue mechanisms that are not available via traditional "neck down" measurement approaches. OBJECTIVE This study examined the supraspinal mechanisms of exercise performance under fatigue and determined if there were any sex differences in these mechanisms. METHODS Fifty-nine older adults performed submaximal handgrip contractions until voluntary fatigue. Traditional ergonomics measures, namely, force variability, electromyography (EMG) of arm muscles, and strength and endurance times, and prefrontal and motor cortex hemodynamic responses were recorded. RESULTS There were no significant differences observed between older males and females in fatigability outcomes (i.e., endurance times, strength loss, and EMG activity) and brain activation. Effective connectivity from prefrontal to motor areas was significant for both sexes throughout the task, but during fatigue, males had higher interregional connectivity than females. DISCUSSION While traditional metrics of fatigue were comparable between the sexes, we observed distinct sex-specific neuromotor strategies (i.e., information flow between frontal-motor regions) that were adopted by older adults to maintain motor performance. APPLICATION The findings from this study offer insights into the capabilities and adaptation strategies of older men and women under fatiguing conditions. This knowledge can facilitate in the development of effective and targeted ergonomic strategies that accommodate for the varying physical capacities of diverse worker demographics.
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Affiliation(s)
- Oshin Tyagi
- Department of Industrial and Systems Engineering, Texas A&M University, College Station, TX, USA
| | - Ranjana K Mehta
- Department of Industrial and Systems Engineering, Texas A&M University, College Station, TX, USA
- Department of Mechanical Engineering, Texas A&M University, College Station, TX, USA
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Wasserman JS, Holtzer R. Depressive Symptoms are Associated with Decline Over Time in Verbal Fluency Performance in Female but Not Male Community-Dwelling Older Adults. Exp Aging Res 2024; 50:360-375. [PMID: 36989442 PMCID: PMC10539484 DOI: 10.1080/0361073x.2023.2195295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 03/16/2023] [Indexed: 03/31/2023]
Abstract
OBJECTIVE The current study was designed to examine associations between depressive symptoms and longitudinal declines in category and letter fluency performance in a gender-stratified sample of older adults. METHOD Participants were community-residing older adults (females: n = 289; males: n = 233) followed annually (2011-2018) as part of a cohort study conducted at Albert Einstein College of Medicine in New York. Depressive symptoms were assessed using the Geriatric Depression Scale (GDS). Standard forms assessed category and letter fluency performance. Participants were dementia-free during study enrollment. RESULTS The presence of baseline depressive symptoms suggestive of subclinical depression was associated with a worse longitudinal decline in category fluency performance in female but not male participants. These associations remained significant when excluding participants with prevalent and incident mild cognitive impairment and incident dementia. Irrespective of gender, letter fluency performance did not decline over time and was not influenced by the presence of depressive symptoms. DISCUSSION The present study's results can aid in identification of older adults who may be at greater risk for cognitive decline, and add to the limited literature examining the influence of gender on longitudinal associations between depressive symptoms and verbal fluency performance.
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Affiliation(s)
| | - Roee Holtzer
- Ferkauf Graduate School of Psychology, Yeshiva University, Bronx, New York, USA
- Department of Neurology, Albert Einstein College of Medicine, Bronx, New York, USA
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Coverdale NS, Champagne AA, Allen MD, Tremblay JC, Ethier TS, Fernandez-Ruiz J, Marshall RA, MacPherson REK, Pyke KE, Cook DJ, Olver TD. Brain atrophy, reduced cerebral perfusion, arterial stiffening, and wall thickening with aging coincide with stimulus-specific changes in fMRI-BOLD responses. Am J Physiol Regul Integr Comp Physiol 2024; 326:R346-R356. [PMID: 38406844 DOI: 10.1152/ajpregu.00270.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/07/2024] [Accepted: 02/16/2024] [Indexed: 02/27/2024]
Abstract
The aim of this study was to investigate how aging affects blood flow and structure of the brain. It was hypothesized older individuals would have lower gray matter volume (GMV), resting cerebral blood flow (CBF0), and depressed responses to isometabolic and neurometabolic stimuli. In addition, increased carotid-femoral pulse-wave velocity (PWV), carotid intima-media thickness (IMT), and decreased brachial flow-mediated dilation (FMD) would be associated with lower CBF0, cerebrovascular reactivity (CVR), and GMV. Brain scans (magnetic resonance imaging) and cardiovascular examinations were conducted in young (age = 24 ± 3 yr, range = 22-28 yr; n = 13) and old (age = 71 ± 4 yr; range = 67-82 yr, n = 14) participants, and CBF0, CVR [isometabolic % blood oxygen level-dependent (BOLD) in response to a breath hold (BH)], brain activation patterns during a working memory task (neurometabolic %BOLD response to N-back trial), GMV, PWV, IMT, and FMD were measured. CBF0 and to a lesser extent CVRBH were lower in the old group (P ≤ 0.050); however, the increase in the %BOLD response to the memory task was not blunted (P ≥ 0.2867). Age-related differential activation patterns during the working memory task were characterized by disinhibition of the default mode network in the old group (P < 0.0001). Linear regression analyses revealed PWV, and IMT were negatively correlated with CBF0, CVRBH, and GMV across age groups, but within the old group alone only the relationships between PWV-CVRBH and IMT-GMV remained significant (P ≤ 0.0183). These findings suggest the impacts of age on cerebral %BOLD responses are stimulus specific, brain aging involves alterations in cerebrovascular and possibly neurocognitive control, and arterial stiffening and wall thickening may serve a role in cerebrovascular aging.NEW & NOTEWORTHY Cerebral perfusion was lower in old versus young adults. %Blood oxygen level-dependent (BOLD) responses to an isometabolic stimulus and gray matter volume were decreased in old versus young adults and associated with arterial stiffening and wall thickening. The increased %BOLD response to a neurometabolic stimulus appeared unaffected by age; however, the old group displayed disinhibition of the default mode network during the stimulus. Thus, age-related alterations in cerebral %BOLD responses were stimulus specific and related to arterial remodeling.
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Affiliation(s)
- Nicole S Coverdale
- Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada
| | - Allen A Champagne
- Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada
- School of Medicine, Queen's University, Kingston, Ontario, Canada
| | - Matti D Allen
- Department of Physical Medicine and Rehabilitation, Queen's University, Kingston, Ontario, Canada
| | - Joshua C Tremblay
- School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom
| | - Tarrah S Ethier
- School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada
| | - Juan Fernandez-Ruiz
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, México
| | - Rory A Marshall
- Health and Exercise Sciences, University of British Columbia Okanagan, Kelowna, British Columbia, Canada
- Department of Biomedical Sciences, Western College of Veterinary Medicine, the University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Rebecca E K MacPherson
- Department of Health Sciences, Faculty of Applied Health Sciences, Brock University, St. Catharines, Ontario, Canada
| | - Kyra E Pyke
- School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada
| | - Douglas J Cook
- Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada
- Department of Surgery, Queen's University, Kingston, Ontario, Canada
| | - T Dylan Olver
- Department of Biomedical Sciences, Western College of Veterinary Medicine, the University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Aminirakan D, Losekamm B, Wollesen B. Effects of combined cognitive and resistance training on physical and cognitive performance and psychosocial well-being of older adults ≥65: study protocol for a randomised controlled trial. BMJ Open 2024; 14:e082192. [PMID: 38643006 DOI: 10.1136/bmjopen-2023-082192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/22/2024] Open
Abstract
INTRODUCTION With increasing life expectancy of older adult population, maintaining independence and well-being in later years is of paramount importance. This study aims to investigate the impact of three distinct interventions: cognitive training, resistance training and a combination of both, compared with an inactive control group, on cognitive performance, mobility and quality of life in adults aged ≥65 years. METHODS AND ANALYSIS This trial will investigate healthy older adults aged ≥65 years living independently without cognitive impairments. Participants will be randomly assigned to one of four groups: (1) cognitive training, (2) resistance training, (3) combined cognitive and resistance training, and (4) control group (n=136 participants with 34 participants per group). The interventions will be conducted over 12 weeks. The cognitive training group will receive group-based activities for 45-60 min two times a week. The resistance training group exercises will target six muscle groups and the combined group will integrate cognitive tasks into the resistance training sessions. Primary outcomes are: Short Physical Performance Battery, Sit-to-Stand Test, Montreal Cognitive Assessment, Trail Making Test and Stroop Test combined with gait on a treadmill (dual task). Life satisfaction will be measured by the Satisfaction With Life Scale. Secondary outcomes encompass hand grip strength and the Functional Independence Measure. ETHICS AND DISSEMINATION Ethical approval was provided by the local Ethics Committee at the University of Hamburg (no. 2023_009). Informed consent will be obtained from all study participants. The results of the study will be distributed for review and discussion in academic journals and conferences. TRIAL REGISTRATION NUMBER DRKS00032587.
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Affiliation(s)
- Deniz Aminirakan
- Department of Human Movement Science, Universität Hamburg, Hamburg, Germany
| | - Björn Losekamm
- Department of Human Movement Science, Universität Hamburg, Hamburg, Germany
| | - Bettina Wollesen
- Department of Human Movement Science, Universität Hamburg, Hamburg, Germany
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Pizzo E, Cervantes DO, Ketkar H, Ripa V, Nassal DM, Buck B, Parambath SP, Di Stefano V, Singh K, Thompson CI, Mohler PJ, Hund TJ, Jacobson JT, Jain S, Rota M. Phosphorylation of Cardiac Sodium Channel at Ser571 Anticipates Manifestations of the Aging Myopathy. Am J Physiol Heart Circ Physiol 2024. [PMID: 38639742 DOI: 10.1152/ajpheart.00325.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 04/02/2024] [Indexed: 04/20/2024]
Abstract
Diastolic dysfunction and delayed ventricular repolarization are typically observed in the elderly, but whether these defects are intimately associated in the progressive manifestation of the aging myopathy remains to be determined. In this regard, aging in experimental animals is coupled with increased late Na+ current (INaL) in cardiomyocytes, raising the possibility that INaL conditions the modality of electrical recovery and myocardial relaxation of the aged heart. For this purpose, aging male and female wild-type (WT) C57Bl/6 mice were studied together with genetically engineered mice with phosphomimetic (gain-of-function, GoF) or ablated (loss-of-function, LoF) mutations of the sodium channel Nav1.5 at Ser571 associated with, respectively, increased and stabilized INaL. At ~18 months (m) of age, WT mice developed prolonged duration of the QT interval of the electrocardiogram and impaired diastolic left ventricular (LV) filling, defects that were reversed by INaL inhibition. Prolonged repolarization and impaired LV filling occurred prematurely in adult (~5 m) GoF mutant mice, whereas these alterations were largely attenuated in aging LoF mutant animals. Ca2+ transient decay and kinetics of myocyte shortening/relengthening were delayed in aged (~24 m) WT myocytes, with respect to adult cells. In contrast, delayed Ca2+ transients and contractile dynamics occurred at adult stage in GoF myocytes and further deteriorated at old age. Conversely, myocyte mechanics were minimally affected in aging LoF cells. Collectively, these results document that Nav1.5 phosphorylation at Ser571 and the late Na+ current modulates the modality of myocyte relaxation, constituting the mechanism linking delayed ventricular repolarization and diastolic dysfunction.
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Affiliation(s)
- Emanuele Pizzo
- Department of Physiology, New York Medical College, Valhalla, NY, United States
| | - Daniel O Cervantes
- Department of Physiology, New York Medical College, Valhalla, NY, United States
| | - Harshada Ketkar
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY, United States
| | | | - Drew M Nassal
- Biomedical Engineering, The Ohio State University, United States
| | | | - Sreema P Parambath
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY, United States
| | | | - Kanwardeep Singh
- Physiology, New York Medical College, Valhalla, NY, United States
| | - Carl I Thompson
- Department of Physiology, New York Medical College, Valhalla,, New York, United States
| | - Peter J Mohler
- Internal Medicine and of Physiology & Cell Biology, The Ohio State University, Columbus, OH, United States
| | - Thomas J Hund
- Dorothy M. Davis Heart and Lung Research Institute, Departments of Internal Medicine23 and Biomedical Engineering, The Ohio State University, Columbus, OH, United States
| | - Jason T Jacobson
- Department of Physiology, New York Medical College; Department of Cardiology, Westchester Medical Center, Valhalla, NY, United States
| | - Sudhir Jain
- PATHOLOGY MICROBIOLOGY IMMUNOLOGY, Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY, United States
| | - Marcello Rota
- Physiology, New York Medical College, Valhalla, NY, United States
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Thor KB, Marson L, Katofiasc MA, Ricca DJ, Burgard EC. Recent developments in on-demand voiding therapies. J Pharmacol Exp Ther 2024:JPET-MR-2023-002073. [PMID: 38641354 DOI: 10.1124/jpet.123.002073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/21/2024] Open
Abstract
One cannot survive without regularly urinating and defecating. People with neurological injury (spinal cord injury, traumatic brain injury, stroke) or disease (multiple sclerosis, Parkinson's disease, spina bifida) and many elderly are unable to voluntarily initiate voiding. The great majority of them require bladder catheters to void urine and "manual bowel programs" with digital rectal stimulation and manual extraction to void stool. Catheter-associated urinary tract infections frequently require hospitalization, while manual bowel programs are time-consuming (1-2 hours), stigmatizing, and cause rectal pain and discomfort. Laxatives and enemas produce defecation, but onset and duration are unpredictable, prolonged, and difficult to control, which can produce involuntary defecation and fecal incontinence. Patients with spinal cord injury (SCI) consider recovery of bladder and bowel function a higher priority than recovery of walking. Bladder and bowel dysfunction are a top reason for institutionalization of elderly. Surveys indicate that convenience, rapid onset and short duration, reliability and predictability, and efficient voiding are priorities of SCI individuals. Despite the severe, unmet, medical need; there is no literature regarding on-demand, rapid-onset, short-duration, drug-induced, voiding therapies. This article provides in depth discussion of recent discovery and development of two candidates for on-demand voiding therapies. The first, DTI-117, a neurokinin2 receptor agonist, induces both urination and defecation after systemic administration. The second, DTI-301, is a TRPV1 receptor agonist that induces defecation after intrarectal administration. The review also presents clinical studies of a combination drug therapy administered via iontophoresis and preclinical studies of neuromodulation devices that induce urination and defecation. Significance Statement Safe, effective, on-demand, rapid-onset, short-duration, drug-induced, voiding therapy could eliminate or reduce need for bladder catheters, manual bowel programs, and colostomies in patient populations that are unable to voluntarily initiate voiding. People with spinal injury place more importance on restoring bladder and bowel control than restoring their ability to walk. This paradigm-changing therapy would reduce stigmatism and healthcare costs while increasing convenience and quality of life.
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Imawari Y, Nakanishi M. Senescence and senolysis in cancer: The latest findings. Cancer Sci 2024. [PMID: 38641866 DOI: 10.1111/cas.16184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 03/21/2024] [Accepted: 04/01/2024] [Indexed: 04/21/2024] Open
Abstract
Aging is a life phenomenon that occurs in most living organisms and is a major risk factor for many diseases, including cancer. Cellular senescence is a cellular trait induced by various genomic and epigenetic stresses. Senescent cells are characterized by irreversible cell growth arrest and excessive secretion of inflammatory cytokines (senescence-associated secretory phenotypes, SASP). Chronic tissue microinflammation induced by SASP contributes to the pathogenesis of a variety of age-related diseases, including cancer. Senolysis is a promising new strategy to selectively eliminate senescent cells in order to suppress chronic inflammation, suggesting its potential use as an anticancer therapy. This review summarizes recent findings on the molecular basis of senescence in cancer cells and senolysis.
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Affiliation(s)
- Yoshimi Imawari
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- Department of Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
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Roberts MD, Ruple BA, Godwin JS, McIntosh MC, Chen SY, Kontos NJ, Agyin-Birikorang A, Michel M, Plotkin DL, Mattingly ML, Mobley B, Ziegenfuss TN, Fruge AD, Kavazis AN. A novel deep proteomic approach in human skeletal muscle unveils distinct molecular signatures affected by aging and resistance training. Aging (Albany NY) 2024; 16:205751. [PMID: 38643460 DOI: 10.18632/aging.205751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 03/18/2024] [Indexed: 04/22/2024]
Abstract
The skeletal muscle proteome alterations to aging and resistance training have been reported in prior studies. However, conventional proteomics in skeletal muscle typically yields wide protein abundance ranges that mask the detection of lowly expressed proteins. Thus, we adopted a novel deep proteomics approach whereby myofibril (MyoF) and non-MyoF fractions were separately subjected to protein corona nanoparticle complex formation prior to digestion and Liquid Chromatography Mass Spectrometry (LC-MS). Specifically, we investigated MyoF and non-MyoF proteomic profiles of the vastus lateralis muscle of younger (Y, 22±2 years old; n=5) and middle-aged participants (MA, 56±8 years old; n=6). Additionally, MA muscle was analyzed following eight weeks of resistance training (RT, 2d/week). Across all participants, the number of non-MyoF proteins detected averaged to be 5,645±266 (range: 4,888-5,987) and the number of MyoF proteins detected averaged to be 2,611±326 (range: 1,944-3,101). Differences in the non-MyoF (8.4%) and MyoF (2.5%) proteomes were evident between age cohorts, and most differentially expressed non-MyoF proteins (447/543) were more enriched in MA versus Y. Biological processes in the non-MyoF fraction were predicted to be operative in MA versus Y including increased cellular stress, mRNA splicing, translation elongation, and ubiquitin-mediated proteolysis. RT in MA participants only altered ~0.3% of MyoF and ~1.0% of non-MyoF proteomes. In summary, aging and RT predominantly affect non-contractile proteins in skeletal muscle. Additionally, marginal proteome adaptations with RT suggest more rigorous training may stimulate more robust effects or that RT, regardless of age, subtly alters basal state skeletal muscle protein abundances.
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Affiliation(s)
| | - Bradley A Ruple
- School of Kinesiology, Auburn University, Auburn, AL 36849, USA
| | - Joshua S Godwin
- School of Kinesiology, Auburn University, Auburn, AL 36849, USA
| | | | | | | | | | - Max Michel
- School of Kinesiology, Auburn University, Auburn, AL 36849, USA
| | | | | | - Brooks Mobley
- School of Kinesiology, Auburn University, Auburn, AL 36849, USA
| | | | - Andrew D Fruge
- College of Nursing, Auburn University, Auburn, AL 36849, USA
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Austin ME, Ingram LA, McCollum Q, Levkoff SE, Friedman DB. A dual approach to addressing gaps in scholar diversity in aging research. Gerontol Geriatr Educ 2024:1-10. [PMID: 38639550 DOI: 10.1080/02701960.2024.2343876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
The number of people with Alzheimer's disease and related dementias (ADRD) in the United States is steadily increasing, with minoritized populations having a disproportionate burden of disease. One strategy to address the racial and ethnic disparities in aging is to diversify scholars in the field of aging, to increase dynamic solution development and create cultural congruence among researchers and participants. The National Institute on Aging has a committed effort to increase and diversify the number of scientists who conduct aging and ADRD research, placing a call for Centers to focus on this effort. In response to the National Institute on Aging call, the Carolina Center for Alzheimer's Disease and Minority Research, housed at the University of South Carolina, proposed a dual approach to addressing these gaps through a joint national conference and mentorship program for underrepresented minoritized faculty. After one year of the program, the participating scholars were surveyed, and successes and growth points of the program were identified to help guide the improvement of this dual approach to addressing gaps in scholar diversity in aging research.
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Affiliation(s)
- Megan E Austin
- Arnold School of Public Health, Department of Health Promotion, Education, and Behavior, University of South Carolina, Columbia, South Carolina, USA
| | - Lucy A Ingram
- College of Public Health, Department of Health Promotion & Behavior, University of Georgia, Athens, Georgia, USA
| | - Quentin McCollum
- College of Social Work, University of South Carolina, Columbia, South Carolina, USA
| | - Sue E Levkoff
- College of Social Work, University of South Carolina, Columbia, South Carolina, USA
| | - Daniela B Friedman
- Arnold School of Public Health, Department of Health Promotion, Education, and Behavior, University of South Carolina, Columbia, South Carolina, USA
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Lau CHE, Manou M, Markozannes G, Ala-Korpela M, Ben-Shlomo Y, Chaturvedi N, Engmann J, Gentry-Maharaj A, Herzig KH, Hingorani A, Järvelin MR, Kähönen M, Kivimäki M, Lehtimäki T, Marttila S, Menon U, Munroe PB, Palaniswamy S, Providencia R, Raitakari O, Schmidt AF, Sebert S, Wong A, Vineis P, Tzoulaki I, Robinson O. NMR metabolomic modeling of age and lifespan: A multicohort analysis. Aging Cell 2024:e14164. [PMID: 38637937 DOI: 10.1111/acel.14164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 03/05/2024] [Accepted: 03/19/2024] [Indexed: 04/20/2024] Open
Abstract
Metabolomic age models have been proposed for the study of biological aging, however, they have not been widely validated. We aimed to assess the performance of newly developed and existing nuclear magnetic resonance spectroscopy (NMR) metabolomic age models for prediction of chronological age (CA), mortality, and age-related disease. Ninety-eight metabolic variables were measured in blood from nine UK and Finnish cohort studies (N ≈31,000 individuals, age range 24-86 years). We used nonlinear and penalized regression to model CA and time to all-cause mortality. We examined associations of four new and two previously published metabolomic age models, with aging risk factors and phenotypes. Within the UK Biobank (N ≈102,000), we tested prediction of CA, incident disease (cardiovascular disease (CVD), type-2 diabetes mellitus, cancer, dementia, and chronic obstructive pulmonary disease), and all-cause mortality. Seven-fold cross-validated Pearson's r between metabolomic age models and CA ranged between 0.47 and 0.65 in the training cohort set (mean absolute error: 8-9 years). Metabolomic age models, adjusted for CA, were associated with C-reactive protein, and inversely associated with glomerular filtration rate. Positively associated risk factors included obesity, diabetes, smoking, and physical inactivity. In UK Biobank, correlations of metabolomic age with CA were modest (r = 0.29-0.33), yet all metabolomic model scores predicted mortality (hazard ratios of 1.01 to 1.06/metabolomic age year) and CVD, after adjustment for CA. While metabolomic age models were only moderately associated with CA in an independent population, they provided additional prediction of morbidity and mortality over CA itself, suggesting their wider applicability.
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Affiliation(s)
- Chung-Ho E Lau
- MRC Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, UK
| | - Maria Manou
- Department of Hygiene and Epidemiology, University of Ioannina Medical School, Ioannina, Greece
| | - Georgios Markozannes
- MRC Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, UK
- Department of Hygiene and Epidemiology, University of Ioannina Medical School, Ioannina, Greece
| | - Mika Ala-Korpela
- Systems Epidemiology, Faculty of Medicine, University of Oulu, Oulu, Finland
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
- NMR Metabolomics Laboratory, School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Yoav Ben-Shlomo
- Population Health Sciences, University of Bristol, Bristol, UK
| | - Nish Chaturvedi
- MRC Unit for Lifelong Health and Ageing at UCL, University College London, London, UK
| | - Jorgen Engmann
- UCL Institute of Cardiovascular Science, Population Science and Experimental Medicine, Centre for Translational Genomics, London, UK
| | - Aleksandra Gentry-Maharaj
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, University College London, London, UK
- Department of Women's Cancer, Elizabeth Garrett Anderson Institute for Women's Health, University College London, London, UK
| | - Karl-Heinz Herzig
- Institute of Biomedicine and Internal Medicine, Biocenter of Oulu, Medical Research Center Oulu, Oulu University Hospital, Faculty of Medicine, Oulu University, Oulu, Finland
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, Poznan, Poland
| | - Aroon Hingorani
- UCL Institute of Cardiovascular Science, Population Science and Experimental Medicine, Centre for Translational Genomics, London, UK
| | - Marjo-Riitta Järvelin
- MRC Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, UK
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland
- Department of Life Sciences, College of Health and Life Sciences, Brunel University London, London, UK
| | - Mika Kähönen
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Mika Kivimäki
- Brain Sciences, University College London, London, UK
| | - Terho Lehtimäki
- Faculty of Medicine and Health Technology and Finnish Cardiovascular Research Center Tampere, Tampere University, Tampere, Finland
- Department of Clinical Chemistry Fimlab Laboratories, Tampere, Finland
| | - Saara Marttila
- Molecular Epidemiology, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Gerontology Research Center (GEREC), Tampere University, Tampere, Finland
| | - Usha Menon
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, University College London, London, UK
| | - Patricia B Munroe
- William Harvey Research Institute, Barts and the London Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
- National Institute of Health and Care Research, Barts Cardiovascular Biomedical Research Centre, Queen Mary University of London, London, UK
| | - Saranya Palaniswamy
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Rui Providencia
- Institute of Health Informatics Research, University College London, London, UK
- Barts Heart Centre, Barts Health NHS Trust, London, UK
| | - Olli Raitakari
- Centre for Population Health Research, University of Turku and Turku University Hospital, Turku, Finland
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland
| | - Amand Floriaan Schmidt
- Institute of Cardiovascular Science, Faculty of Population Health Sciences, University College London, London, UK
- Department of Cardiology, Amsterdam Cardiovascular Science, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
- UCL BHF Research Accelerator Centre, London, UK
| | - Sylvain Sebert
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Andrew Wong
- MRC Unit for Lifelong Health and Ageing at UCL, University College London, London, UK
| | - Paolo Vineis
- MRC Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, UK
| | - Ioanna Tzoulaki
- MRC Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, UK
- Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Oliver Robinson
- MRC Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, UK
- Ageing Epidemiology (AGE) Research Unit, School of Public Health, Imperial College London, London, UK
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44
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Raffin J, Rolland Y, Aubertin-Leheudre M, Aragoni da Silva J, Guyonnet S, Pillard F, Vellas B, de Souto Barreto P. Cross-sectional interactive associations of physical activity and sedentary behaviour with physical capacity across adulthood. J Cachexia Sarcopenia Muscle 2024. [PMID: 38638004 DOI: 10.1002/jcsm.13457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 01/22/2024] [Accepted: 02/16/2024] [Indexed: 04/20/2024] Open
Abstract
BACKGROUND The way physical activity (PA) and sedentary behaviour (SB) independently and interactively modify the age-related decline in physical capacity remains poorly understood. This cross-sectional study investigated the independent and interactive associations of PA and SB with physical function and performance throughout the adult life course. METHODS Data from 499 community-dwelling adults (63% female) aged 20-92 years, involved in the INSPIRE Human Translational Cohort, were used in this cross-sectional study. Daily time spent on moderate-to-vigorous PA (MVPA, min/day) and SB (h/day) was measured with activPAL triaxial accelerometers. Physical function and performance were assessed through the measurement of the 4-m usual gait speed (m/s), handgrip strength (kg), lower-limb strength (isokinetic knee extension torque, N·m), estimated lower-limb power (five-time chair-rise test performance, s) and cardiorespiratory fitness (V̇O2max, mL/kg/min). Confounder-adjusted multiple linear and curvilinear regressions were performed to investigate how MVPA, SB and their interactions were associated with the physical outcomes (all square root-transformed except gait speed) throughout the adulthood spectrum. RESULTS Interaction analyses revealed that the combination of higher levels of MVPA with lower levels of SB favourably reshaped the negative relationship between handgrip strength and age (age2 × SB × MVPA: B = -7E-08, SE = 3E-08, P < 0.05). In addition, higher levels of MVPA were independently associated with an improved age-related profile in gait speed (age2 × MVPA: B = 3E-06, SE = 1E-06, P < 0.05), chair-rise performance (age × MVPA: B = -9E-05, SE = 4E-05, P < 0.05) and V̇O2max (MVPA at 21 years: B = 3E-02, SE = 7E-03, P < 0.05; age × MVPA: B = -5E-04, SE = 2E-04, P < 0.05). Conversely, the detrimental association of age with lower-limb muscle strength (age × SB: B = -1E-04, SE = 6E-05, P < 0.05) and chair-rise performance (age × SB: B = 1E-05, SE = 7E-06, P < 0.05) was exacerbated with increasing duration of SB, independently of MVPA. Supplementary analyses further revealed that some of these associations were age and sex specific. CONCLUSIONS This cross-sectional study demonstrated that reduced sedentary time and increased activity duration were independently and synergistically associated with an attenuated age-related loss in physical capacity. These findings need to be confirmed with longitudinal data but encourage both adopting an active lifestyle and reducing sedentary time as preventive measures against physical aging.
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Affiliation(s)
- Jérémy Raffin
- Institut Hospitalo-Universitaire (IHU) HealthAge, Toulouse, France
- Institut du Vieillissement, Gérontopôle de Toulouse, Centre Hospitalo-Universitaire de Toulouse, Toulouse, France
| | - Yves Rolland
- Institut Hospitalo-Universitaire (IHU) HealthAge, Toulouse, France
- Institut du Vieillissement, Gérontopôle de Toulouse, Centre Hospitalo-Universitaire de Toulouse, Toulouse, France
- CERPOP UMR 1295, University of Toulouse III, Inserm, UPS, Toulouse, France
| | - Mylène Aubertin-Leheudre
- Département des Sciences de l'activité physique, Faculté des sciences, Université du Québec à Montréal, Montréal, Canada
- Centre de recherche, Institut universitaire de gériatrie de Montréal (IUGM), CIUSSS du Centre-Sud-de-l'Île-de-Montréal, Montréal, Canada
| | - Jaqueline Aragoni da Silva
- Institut Hospitalo-Universitaire (IHU) HealthAge, Toulouse, France
- Institut du Vieillissement, Gérontopôle de Toulouse, Centre Hospitalo-Universitaire de Toulouse, Toulouse, France
| | - Sophie Guyonnet
- Institut Hospitalo-Universitaire (IHU) HealthAge, Toulouse, France
- Institut du Vieillissement, Gérontopôle de Toulouse, Centre Hospitalo-Universitaire de Toulouse, Toulouse, France
- CERPOP UMR 1295, University of Toulouse III, Inserm, UPS, Toulouse, France
| | - Fabien Pillard
- Unité de Médecine du Sport, Clinique Universitaire du Sport, Hôpital Pierre Paul RIQUET (Centre Hospitalo-Universitaire), Toulouse, France
- Centre RESTORE (Geroscience and Rejuvenation Center), UMR 1301 (INSERM)/UMR 5070 (CNRS), Toulouse, France
| | - Bruno Vellas
- Institut Hospitalo-Universitaire (IHU) HealthAge, Toulouse, France
- Institut du Vieillissement, Gérontopôle de Toulouse, Centre Hospitalo-Universitaire de Toulouse, Toulouse, France
- CERPOP UMR 1295, University of Toulouse III, Inserm, UPS, Toulouse, France
| | - Philipe de Souto Barreto
- Institut Hospitalo-Universitaire (IHU) HealthAge, Toulouse, France
- Institut du Vieillissement, Gérontopôle de Toulouse, Centre Hospitalo-Universitaire de Toulouse, Toulouse, France
- CERPOP UMR 1295, University of Toulouse III, Inserm, UPS, Toulouse, France
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André C, Martineau-Dussault MÈ, Baril AA, Marchi NA, Daneault V, Lorrain D, Hudon C, Bastien CH, Petit D, Thompson C, Poirier J, Montplaisir J, Gosselin N, Carrier J. REM sleep is reduced in late middle-aged and older APOE4 allele carriers. Sleep 2024:zsae094. [PMID: 38634644 DOI: 10.1093/sleep/zsae094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Indexed: 04/19/2024] Open
Abstract
STUDY OBJECTIVES Apolipoprotein E ɛ4 (APOE4) is the strongest genetic risk factor for Alzheimer's disease (AD). In addition, APOE4 carriers may exhibit sleep disturbances, but conflicting results have been reported, such that there is no clear consensus regarding which aspects of sleep are impacted. Our objective was to compare objective sleep architecture between APOE4 carriers and non-carriers, and to investigate the modulating impact of age, sex, cognitive status and obstructive sleep apnea. METHODS 198 dementia-free participants aged >55 years old (mean age: 68.7 ± 8.08 years old, 40.91% women, 41 APOE4 carriers) were recruited in this cross-sectional study. They underwent polysomnography, APOE4 genotyping and a neuropsychological evaluation. ANCOVAs assessed the effect of APOE4 status on sleep architecture, controlling for age, sex, cognitive status and the apnea-hypopnea index. Interaction terms were added between APOE4 status and covariates. RESULTS REM sleep percentage (F=9.95, p=0.002, ηp2=0.049) and duration (F=9.23, p=0.003, ηp2=0.047) were lower in APOE4 carriers. The results were replicated in a subsample of 112 participants without moderate-to-severe obstructive sleep apnea. There were no significant interactions between APOE4 status and age, sex, cognitive status and obstructive sleep apnea in the whole sample. CONCLUSIONS Our results show that APOE4 carriers exhibit lower REM sleep duration, including in cognitively unimpaired individuals, possibly resulting from early neurodegenerative processes in regions involved in REM sleep generation and maintenance.
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Affiliation(s)
- Claire André
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Recherche CIUSSS NIM, Montreal, QC H4J 1C5, Canada
- Department of Psychology, Université de Montréal, Montreal, QC H2V 2S9, Canada
| | - Marie-Ève Martineau-Dussault
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Recherche CIUSSS NIM, Montreal, QC H4J 1C5, Canada
- Department of Psychology, Université de Montréal, Montreal, QC H2V 2S9, Canada
| | - Andrée-Ann Baril
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Recherche CIUSSS NIM, Montreal, QC H4J 1C5, Canada
- Department of Medicine, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Nicola Andrea Marchi
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Recherche CIUSSS NIM, Montreal, QC H4J 1C5, Canada
- Department of Psychology, Université de Montréal, Montreal, QC H2V 2S9, Canada
- Center for Investigation and Research in Sleep, Department of Medicine, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Vaud, Switzerland
- Laboratory for Research in Neuroimaging, Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Vaud, Switzerland
| | - Véronique Daneault
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Recherche CIUSSS NIM, Montreal, QC H4J 1C5, Canada
- Department of Psychology, Université de Montréal, Montreal, QC H2V 2S9, Canada
| | - Dominique Lorrain
- Research Centre on Aging, University Institute of Geriatrics of Sherbrooke, CIUSSS de l'Estrie-CHUS, Sherbrooke, QC J1H 4C4, Canada
- Department of Psychology, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Carol Hudon
- CERVO Brain Research Centre, Québec City, QC G1E 1T2, Canada
- School of Psychology, Université Laval, Québec City, QC G1V 0A6, Canada
| | - Célyne H Bastien
- CERVO Brain Research Centre, Québec City, QC G1E 1T2, Canada
- School of Psychology, Université Laval, Québec City, QC G1V 0A6, Canada
| | - Dominique Petit
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Recherche CIUSSS NIM, Montreal, QC H4J 1C5, Canada
- Department of Psychiatry, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Cynthia Thompson
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Recherche CIUSSS NIM, Montreal, QC H4J 1C5, Canada
| | - Judes Poirier
- Department of Psychiatry, McGill University, Montreal, QC H3A 1A1, Canada
- Douglas Mental Health University Institute, CIUSSS de l'Ouest-de-l'Ile-de-Montréal, Verdun, QC H4H 1R3, Canada
| | - Jacques Montplaisir
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Recherche CIUSSS NIM, Montreal, QC H4J 1C5, Canada
- Department of Psychiatry, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Nadia Gosselin
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Recherche CIUSSS NIM, Montreal, QC H4J 1C5, Canada
- Department of Psychology, Université de Montréal, Montreal, QC H2V 2S9, Canada
| | - Julie Carrier
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Recherche CIUSSS NIM, Montreal, QC H4J 1C5, Canada
- Department of Psychology, Université de Montréal, Montreal, QC H2V 2S9, Canada
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Sirozh O, Saez-Mas A, Jung B, Sanchez-Burgos L, Zarzuela E, Rodrigo-Perez S, Ventoso I, Lafarga V, Fernandez-Capetillo O. Nucleolar stress caused by arginine-rich peptides triggers a ribosomopathy and accelerates aging in mice. Mol Cell 2024; 84:1527-1540.e7. [PMID: 38521064 DOI: 10.1016/j.molcel.2024.02.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 01/11/2024] [Accepted: 02/26/2024] [Indexed: 03/25/2024]
Abstract
Nucleolar stress (NS) has been associated with age-related diseases such as cancer or neurodegeneration. To investigate how NS triggers toxicity, we used (PR)n arginine-rich peptides present in some neurodegenerative diseases as inducers of this perturbation. We here reveal that whereas (PR)n expression leads to a decrease in translation, this occurs concomitant with an accumulation of free ribosomal (r) proteins. Conversely, (PR)n-resistant cells have lower rates of r-protein synthesis, and targeting ribosome biogenesis by mTOR inhibition or MYC depletion alleviates (PR)n toxicity in vitro. In mice, systemic expression of (PR)97 drives widespread NS and accelerated aging, which is alleviated by rapamycin. Notably, the generalized accumulation of orphan r-proteins is a common outcome of chemical or genetic perturbations that induce NS. Together, our study presents a general model to explain how NS induces cellular toxicity and provides in vivo evidence supporting a role for NS as a driver of aging in mammals.
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Affiliation(s)
- Oleksandra Sirozh
- Genomic Instability Group, Spanish National Cancer Research Centre (CNIO), Madrid 28029, Spain
| | - Anabel Saez-Mas
- Genomic Instability Group, Spanish National Cancer Research Centre (CNIO), Madrid 28029, Spain
| | - Bomi Jung
- Science for Life Laboratory, Division of Genome Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, 171 21 Stockholm, Sweden
| | - Laura Sanchez-Burgos
- Genomic Instability Group, Spanish National Cancer Research Centre (CNIO), Madrid 28029, Spain
| | - Eduardo Zarzuela
- Proteomics Unit, Spanish National Cancer Research Centre (CNIO), Madrid 28029, Spain
| | - Sara Rodrigo-Perez
- Genomic Instability Group, Spanish National Cancer Research Centre (CNIO), Madrid 28029, Spain
| | - Ivan Ventoso
- Centro de Biologia Molecular Severo Ochoa (CSIC-UAM), Departamento de Biologia Molecular, Universidad Autonoma de Madrid (UAM), Madrid, Spain
| | - Vanesa Lafarga
- Genomic Instability Group, Spanish National Cancer Research Centre (CNIO), Madrid 28029, Spain.
| | - Oscar Fernandez-Capetillo
- Genomic Instability Group, Spanish National Cancer Research Centre (CNIO), Madrid 28029, Spain; Science for Life Laboratory, Division of Genome Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, 171 21 Stockholm, Sweden.
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47
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Guan H, Wang W. Factors Impacting Chinese Older Adults' Intention to Prevent COVID-19 in the Post-COVID-19 Pandemic Era: Survey Study. JMIR Form Res 2024; 8:e53608. [PMID: 38630517 PMCID: PMC11025601 DOI: 10.2196/53608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 12/21/2023] [Accepted: 01/14/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Understanding the factors influencing individuals' health decisions is a dynamic research question. Particularly, after China announced the deregulation of the COVID-19 epidemic, health risks escalated rapidly. The convergence of "no longer controlled" viruses and the infodemic has created a distinctive social period during which multiple factors may have influenced people's decision-making. Among these factors, the precautionary intentions of older individuals, as a susceptible health group, deserve special attention. OBJECTIVE This study aims to examine the intention of older adults to engage in preventive behaviors and the influencing factors, including social, media, and individual factors, within the context of the postepidemic era. Drawing upon the structural influence model of communication, this study tests the potential mediating roles of 3 different types of media exposure between cognitive and structural social capital and protective behavior intention, as well as the moderating role of negative emotions between social capital and media exposure. METHODS In this study, a web survey was used to collect self-reported quantitative data on social capital, media exposure, negative emotions, and the intention to prevent COVID-19 among older adults aged ≥60 years (N=399) in China. RESULTS The results indicate that cognitive social capital significantly influenced protective behavior intention (P<.001), with cell phone exposure playing an additional impactful role (P<.001). By contrast, newspaper and radio exposure and television exposure mediated the influence of structural social capital on protective behavior intention (P<.001). Furthermore, negative emotions played a moderating role in the relationship between cognitive social capital and cell phone exposure (P<.001). CONCLUSIONS This study suggests that using tailored communication strategies across various media channels can effectively raise health awareness among older adults dealing with major pandemics in China, considering their diverse social capital characteristics and emotional states.
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Affiliation(s)
- Huixin Guan
- USC-SJTU Institute of Cultural and Creative Industry, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Wang
- USC-SJTU Institute of Cultural and Creative Industry, Shanghai Jiao Tong University, Shanghai, China
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48
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Maboudian SA, Willbrand EH, Kelly JP, Jagust WJ, Weiner KS. Defining Overlooked Structures Reveals New Associations between the Cortex and Cognition in Aging and Alzheimer's Disease. J Neurosci 2024; 44:e1714232024. [PMID: 38383497 PMCID: PMC11026365 DOI: 10.1523/jneurosci.1714-23.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 01/05/2024] [Accepted: 01/27/2024] [Indexed: 02/23/2024] Open
Abstract
Recent work suggests that indentations of the cerebral cortex, or sulci, may be uniquely vulnerable to atrophy in aging and Alzheimer's disease (AD) and that the posteromedial cortex (PMC) is particularly vulnerable to atrophy and pathology accumulation. However, these studies did not consider small, shallow, and variable tertiary sulci that are located in association cortices and are often associated with human-specific aspects of cognition. Here, we manually defined 4,362 PMC sulci in 432 hemispheres in 216 human participants (50.5% female) and found that these smaller putative tertiary sulci showed more age- and AD-related thinning than larger, more consistent sulci, with the strongest effects for two newly uncovered sulci. A model-based approach relating sulcal morphology to cognition identified that a subset of these sulci was most associated with memory and executive function scores in older adults. These findings lend support to the retrogenesis hypothesis linking brain development and aging and provide new neuroanatomical targets for future studies of aging and AD.
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Affiliation(s)
- Samira A Maboudian
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
- Department of Neuroscience, University of California Berkeley, Berkeley, California 94720
| | - Ethan H Willbrand
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin 53726
| | - Joseph P Kelly
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
- Department of Neuroscience, University of California Berkeley, Berkeley, California 94720
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Kevin S Weiner
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
- Department of Neuroscience, University of California Berkeley, Berkeley, California 94720
- Department of Psychology, University of California Berkeley, Berkeley, California 94720
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49
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Ehrlich I, Ortiz-Tudela J, Tan YY, Muckli L, Shing YL. Mnemonic But Not Contextual Feedback Signals Defy Dedifferentiation in the Aging Early Visual Cortex. J Neurosci 2024; 44:e0607232023. [PMID: 38395614 PMCID: PMC11026335 DOI: 10.1523/jneurosci.0607-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 11/18/2023] [Accepted: 12/18/2023] [Indexed: 02/25/2024] Open
Abstract
Perception is an intricate interplay between feedforward visual input and internally generated feedback signals that comprise concurrent contextual and time-distant mnemonic (episodic and semantic) information. Yet, an unresolved question is how the composition of feedback signals changes across the lifespan and to what extent feedback signals undergo age-related dedifferentiation, that is, a decline in neural specificity. Previous research on this topic has focused on feedforward perceptual representation and episodic memory reinstatement, suggesting reduced fidelity of neural representations at the item and category levels. In this fMRI study, we combined an occlusion paradigm that filters feedforward input to the visual cortex and multivariate analysis techniques to investigate the information content in cortical feedback, focusing on age-related differences in its composition. We further asked to what extent differentiation in feedback signals (in the occluded region) is correlated to differentiation in feedforward signals. Comparing younger (18-30 years) and older female and male adults (65-75 years), we found that contextual but not mnemonic feedback was prone to age-related dedifferentiation. Semantic feedback signals were even better differentiated in older adults, highlighting the growing importance of generalized knowledge across ages. We also found that differentiation in feedforward signals was correlated with differentiation in episodic but not semantic feedback signals. Our results provide evidence for age-related adjustments in the composition of feedback signals and underscore the importance of examining dedifferentiation in aging for both feedforward and feedback processing.
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Affiliation(s)
- Isabelle Ehrlich
- Department of Psychology, Goethe University Frankfurt, Frankfurt Am Main 60323, Germany
| | - Javier Ortiz-Tudela
- Department of Psychology, Goethe University Frankfurt, Frankfurt Am Main 60323, Germany
- Department of Experimental Psychology, Mind, Brain, and Behavior Research Center, University of Granada, Granada 18013, Spain
| | - Yi You Tan
- Department of Psychology, Goethe University Frankfurt, Frankfurt Am Main 60323, Germany
| | - Lars Muckli
- School of Psychology and of Neuroscience, University of Glasgow, Glasgow G12 8QB, United Kingdom
| | - Yee Lee Shing
- Department of Psychology, Goethe University Frankfurt, Frankfurt Am Main 60323, Germany
- IDeA Center for Individual Development and Adaptive Education, Frankfurt am Main 60323, Germany
- Brain Imaging Center, Goethe University Frankfurt, Frankfurt am Main 60528, Germany
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50
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Ellison V, Berlin KS, Longoria J, Potter B, Raches D, Hankins JS, Takemoto C, Heitzer AM. Empirically derived profiles of neurocognitive functioning in youth and young adults with sickle cell disease. J Pediatr Psychol 2024:jsae029. [PMID: 38623054 DOI: 10.1093/jpepsy/jsae029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/17/2024] Open
Abstract
OBJECTIVE Sickle cell disease (SCD) is an inherited blood disorder associated with neurocognitive deficits. In contrast to variable-centered approaches, no known research has utilized person-centered strategies to identify multidimensional patterns of neurocognitive functioning of an individual with SCD. The purpose of the present study was to create empirically derived profiles and identify predictors of neurocognitive functioning subgroups among youth and young adults with SCD. METHODS Individuals with SCD (N = 393, mean age 14.05 years, age range 8-24, 50.4% female/49.6% male) completed neurocognitive assessments. Latent profile analysis derived subgroups/classes of neurocognitive functioning and determined relations with demographic and medical variables. RESULTS Three latent classes emerged: average functioning (n = 102, 27%), low average functioning (n = 225, 60%), and exceptionally low functioning (n = 46, 12%). Older age was associated with membership in the low average and exceptionally low functioning groups (relative to the average group). Being prescribed hydroxyurea was associated with membership in the average functioning group (relative to the low average group) and absence of hydroxyurea use was associated with membership in the exceptionally low group (relative to the low average group). Lower social vulnerability was associated with membership in the average functioning group compared to the low average and exceptionally low groups. CONCLUSIONS Clinicians can help reduce disparities in cognitive development for individuals with SCD by promoting early treatment with hydroxyurea and implementing methods to reduce social vulnerabilities that can interfere with access to evidence-based care.
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Affiliation(s)
- Vinkrya Ellison
- Department of Psychology and Biobehavioral Sciences, St Jude Children's Research Hospital, Memphis, TN, United States
- The Department of Psychology, The University of Memphis, Memphis, TN, United States
- The Department of Pediatrics, University of Tennessee Health Sciences Center, Memphis, TN, United States
| | - Kristoffer S Berlin
- The Department of Psychology, The University of Memphis, Memphis, TN, United States
- The Department of Pediatrics, University of Tennessee Health Sciences Center, Memphis, TN, United States
| | - Jennifer Longoria
- Department of Psychology and Biobehavioral Sciences, St Jude Children's Research Hospital, Memphis, TN, United States
| | - Brian Potter
- Department of Psychology and Biobehavioral Sciences, St Jude Children's Research Hospital, Memphis, TN, United States
| | - Darcy Raches
- Department of Psychology and Biobehavioral Sciences, St Jude Children's Research Hospital, Memphis, TN, United States
| | - Jane S Hankins
- Department of Hematology, St Jude Children's Research Hospital, Memphis, TN, United States
- Department of Global Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN, United States
| | - Clifford Takemoto
- Department of Hematology, St Jude Children's Research Hospital, Memphis, TN, United States
| | - Andrew M Heitzer
- Department of Psychology and Biobehavioral Sciences, St Jude Children's Research Hospital, Memphis, TN, United States
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