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Saelee R, April-Sanders AK, Bird HR, Canino GJ, Duarte CS, Lugo-Candelas C, Suglia SF. Self-reported neighborhood stressors and sleep quality among Puerto Rican young adults. Sleep Health 2024:S2352-7218(24)00010-X. [PMID: 38570224 DOI: 10.1016/j.sleh.2024.01.008] [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: 04/24/2023] [Revised: 01/15/2024] [Accepted: 01/23/2024] [Indexed: 04/05/2024]
Abstract
OBJECTIVE To examine the association between changes in self-reported neighborhood stressors and sleep quality and determine whether this varied by sociocultural context among Puerto Rican young adults. METHODS Data come from the Boricua Youth Study Health Assessment, a sample of Puerto Rican young adults from San Juan, Puerto Rico, and South Bronx, New York (n = 818; mean age=22.9years). Sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI). Neighborhood social stressors (disorder, social cohesion, and safety) were parent-reported in childhood and self-reported in young adulthood and categorized into: low in childhood/young adulthood (reference group), high in childhood/low in young adulthood, low in childhood/high in young adulthood, and high in childhood/young adulthood. Sociocultural context was based on participant residence during childhood (San Juan vs. South Bronx). RESULTS Adjusting for sociodemographic factors, living with high neighborhood stressors in both childhood and young adulthood (prevalence ratios=1.30, 95% CI: 1.01, 1.66) was associated with overall poor sleep (PSQI score >5). Among PSQI components, living with high neighborhood stressors in young adulthood only or in both time periods was associated with worse subjective sleep quality and daytime dysfunction. Additionally, there were various associations between the neighborhood stressor measures and PSQI components. Results did not differ by sociocultural context. CONCLUSION Findings suggest that living with high levels of neighborhood stressors during childhood and young adulthood may have a cumulative adverse impact on sleep quality in young adulthood.
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Affiliation(s)
- Ryan Saelee
- Department of Epidemiology, Emory University, Atlanta, Georgia, USA.
| | - Ayana K April-Sanders
- Department of Statistics and Epidemiology, Rutgers School of Public Health, Piscataway, NJ
| | - Hector R Bird
- Department of Psychiatry, New York State Psychiatric Institute, Columbia University Medical Center, New York City, New York, USA
| | - Glorisa J Canino
- Behavioral Sciences Research Institute, University of Puerto Rico Medical School, San Juan, Puerto Rico
| | - Cristiane S Duarte
- Department of Psychiatry, New York State Psychiatric Institute, Columbia University Medical Center, New York City, New York, USA
| | - Claudia Lugo-Candelas
- Department of Psychiatry, New York State Psychiatric Institute, Columbia University Medical Center, New York City, New York, USA
| | - Shakira F Suglia
- Department of Epidemiology, Emory University, Atlanta, Georgia, USA
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Goodman ZT, Nomi JS, Kornfeld S, Bolt T, Saumure RA, Romero C, Bainter SA, Uddin LQ. Brain signal variability and executive functions across the life span. Netw Neurosci 2024; 8:226-240. [PMID: 38562287 PMCID: PMC10918754 DOI: 10.1162/netn_a_00347] [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: 04/21/2023] [Accepted: 10/23/2023] [Indexed: 04/04/2024] Open
Abstract
Neural variability is thought to facilitate survival through flexible adaptation to changing environmental demands. In humans, such capacity for flexible adaptation may manifest as fluid reasoning, inhibition of automatic responses, and mental set-switching-skills falling under the broad domain of executive functions that fluctuate over the life span. Neural variability can be quantified via the BOLD signal in resting-state fMRI. Variability of large-scale brain networks is posited to underpin complex cognitive activities requiring interactions between multiple brain regions. Few studies have examined the extent to which network-level brain signal variability across the life span maps onto high-level processes under the umbrella of executive functions. The present study leveraged a large publicly available neuroimaging dataset to investigate the relationship between signal variability and executive functions across the life span. Associations between brain signal variability and executive functions shifted as a function of age. Limbic-specific variability was consistently associated with greater performance across subcomponents of executive functions. Associations between executive function subcomponents and network-level variability of the default mode and central executive networks, as well as whole-brain variability, varied across the life span. Findings suggest that brain signal variability may help to explain to age-related differences in executive functions across the life span.
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Affiliation(s)
| | - Jason S. Nomi
- Semel Institute for Neuroscience and Human Behavior, Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, CA, USA
| | - Salome Kornfeld
- Department of Psychology, University of Miami, Coral Gables, FL, USA
- REHAB Basel, Klinik für Neurorehabilitation und Paraplegiologie, Basel, Switzerland
| | - Taylor Bolt
- Semel Institute for Neuroscience and Human Behavior, Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, CA, USA
| | - Roger A. Saumure
- Department of Psychology, University of Miami, Coral Gables, FL, USA
| | - Celia Romero
- Department of Psychology, University of Miami, Coral Gables, FL, USA
| | - Sierra A. Bainter
- Department of Psychology, University of Miami, Coral Gables, FL, USA
| | - Lucina Q. Uddin
- Semel Institute for Neuroscience and Human Behavior, Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, CA, USA
- Department of Psychology, University of California Los Angeles, Los Angeles, CA, USA
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Willems YE, deSteiguer A, Tanksley PT, Vinnik L, Fraemke D, Okbay A, Richter D, Wagner GG, Hertwig R, Koellinger P, Tucker-Drob EM, Harden KP, Raffington L. Self-control is associated with health-relevant disparities in buccal DNA-methylation measures of biological aging in older adults. Clin Epigenetics 2024; 16:22. [PMID: 38331797 PMCID: PMC10854186 DOI: 10.1186/s13148-024-01637-7] [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: 09/08/2023] [Accepted: 01/29/2024] [Indexed: 02/10/2024] Open
Abstract
Self-control is a personality dimension that is associated with better physical health and a longer lifespan. Here, we examined (1) whether self-control is associated with buccal and saliva DNA-methylation (DNAm) measures of biological aging quantified in children, adolescents, and adults, and (2) whether biological aging measured in buccal DNAm is associated with self-reported health. Following preregistered analyses, we computed two DNAm measures of advanced biological age (principal-component PhenoAge and GrimAge Acceleration) and a DNAm measure of pace of aging (DunedinPACE) in buccal samples from the German Socioeconomic Panel Study (SOEP-G[ene], n = 1058, age range 0-72, Mage = 42.65) and saliva samples from the Texas Twin Project (TTP, n = 1327, age range 8-20, Mage = 13.50). We found that lower self-control was associated with advanced biological age in older adults (PhenoAge Acceleration β = - .34, [- .51, - .17], p < .001; GrimAge Acceleration β = - .34, [- .49, - .19], p < .001), but not young adults, adolescents or children. These associations remained statistically robust even after correcting for possible confounders such as socioeconomic contexts, BMI, or genetic correlates of low self-control. Moreover, a faster pace of aging and advanced biological age measured in buccal DNAm were associated with self-reported disease (PhenoAge Acceleration: β = .13 [.06, .19], p < .001; GrimAge Acceleration: β = .19 [.12, .26], p < .001; DunedinPACE: β = .09 [.02, .17], p = .01). However, effect sizes were weaker than observations in blood, suggesting that customization of DNAm aging measures to buccal and saliva tissues may be necessary. Our findings are consistent with the hypothesis that self-control is associated with health via pathways that accelerate biological aging in older adults.
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Affiliation(s)
- Y E Willems
- Max Planck Research Group Biosocial - Biology, Social Disparities, and Development, Max Planck Institute for Human Development, Lentzeallee 94, 14195, Berlin, Germany
| | - A deSteiguer
- Population Research Center, The University of Texas, Austin, USA
| | - P T Tanksley
- Population Research Center, The University of Texas, Austin, USA
| | - L Vinnik
- Max Planck Research Group Biosocial - Biology, Social Disparities, and Development, Max Planck Institute for Human Development, Lentzeallee 94, 14195, Berlin, Germany
| | - D Fraemke
- Max Planck Research Group Biosocial - Biology, Social Disparities, and Development, Max Planck Institute for Human Development, Lentzeallee 94, 14195, Berlin, Germany
| | - A Okbay
- School of Business and Economics, Economics Fellow, Tinbergen Institute, Amsterdam, The Netherlands
- Amsterdam Neuroscience, Complex Trait Genetics, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Department of Economics, School of Business and Economics, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - D Richter
- SHARE Berlin Institute GmbH, Berlin, Germany
- Department of Education and Psychology, Freie Universität Berlin, Berlin, Germany
| | - G G Wagner
- Max Planck Institute for Human Development, Berlin, Germany
- German Socio Economic Panel Study (SOEP), Berlin, Germany
| | - R Hertwig
- Max Planck Institute for Human Development, Berlin, Germany
| | - P Koellinger
- School of Business and Economics, Economics Fellow, Tinbergen Institute, Amsterdam, The Netherlands
- Amsterdam Neuroscience, Complex Trait Genetics, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Department of Economics, School of Business and Economics, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - E M Tucker-Drob
- Population Research Center, The University of Texas, Austin, USA
| | - K P Harden
- Population Research Center, The University of Texas, Austin, USA
| | - Laurel Raffington
- Max Planck Research Group Biosocial - Biology, Social Disparities, and Development, Max Planck Institute for Human Development, Lentzeallee 94, 14195, Berlin, Germany.
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Almirón M, Gomez FH, Sambucetti P, Norry FM. Heat-induced hormesis in longevity is linked to heat-stress sensitivity across laboratory populations from diverse altitude of origin in Drosophila buzzatii. Biogerontology 2024; 25:183-190. [PMID: 37725295 DOI: 10.1007/s10522-023-10066-7] [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: 08/02/2023] [Accepted: 08/28/2023] [Indexed: 09/21/2023]
Abstract
Heat-induced hormesis in longevity is the increase in life span resulting from the previous exposure to a mild heat stress early in life. Here we examined heat-induced hormesis of Drosophila buzzatii in five mass-mating populations, which were derived from five wild populations along an elevation gradient from 202 to 1855 m above sea level in North-Western Argentina. Five day old flies were exposed to 37.5 °C for 90 min to induce hormesis and its possible variation across altitudinal populations. This heat treatment strongly extended longevity in lowland-derived flies from the most heat-resistant population only. Both heat-induced effects on longevity and heat-knockdown time (heat-stress sensitivity) were negatively correlated to altitude of population of origin. Hormesis was positively correlated to heat-knockdown time across populations. These results indicate that variation in heat-induced hormesis can not be considered as independent of heat-stress sensitivity (or heat-knockdown time) in populations of insects.
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Affiliation(s)
- Mariano Almirón
- Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA)-CONICET, Universidad de Buenos Aires, C-1428-EHA, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires, C-1428-EHA, Buenos Aires, Argentina
| | - Federico H Gomez
- Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA)-CONICET, Universidad de Buenos Aires, C-1428-EHA, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires, C-1428-EHA, Buenos Aires, Argentina
| | - Pablo Sambucetti
- Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA)-CONICET, Universidad de Buenos Aires, C-1428-EHA, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires, C-1428-EHA, Buenos Aires, Argentina
| | - Fabian M Norry
- Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA)-CONICET, Universidad de Buenos Aires, C-1428-EHA, Buenos Aires, Argentina.
- Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires, C-1428-EHA, Buenos Aires, Argentina.
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Ghosn ZA, Sparks KM, Spaulding JL, Vutukuri S, Ahmed MJJ, VanBerkum MFA. Divalent metal content in diet affects severity of manganese toxicity in Drosophila. Biol Open 2024; 13:bio060204. [PMID: 38117005 PMCID: PMC10810561 DOI: 10.1242/bio.060204] [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: 10/23/2023] [Accepted: 12/05/2023] [Indexed: 12/21/2023] Open
Abstract
Dysregulation of manganese (Mn) homeostasis is a contributing factor in many neuro-degenerative diseases. Adult Drosophila are sensitive to excessive levels of dietary Mn, dying relatively early, and exhibiting biochemical and mobility changes reminiscent of Parkinsonian conditions. To further study Mn homeostasis in Drosophila, we sought to test lower levels of dietary Mn (5 mM) and noted a striking difference in Canton-S adult survivorship on different food. On a cornmeal diet, Mn-treated flies live only about half as long as untreated siblings. Yet, with the same Mn concentration in a molasses diet, adults survive about 80% as long as untreated siblings, and adults raised on a sucrose-yeast diet are completely insensitive to this low dose of dietary Mn. By manipulating metal ion content in the cornmeal diet, and measuring the metal content in each diet, we traced the difference in lifespan to the levels of calcium and magnesium in the food, suggesting that these ions are involved in Mn uptake and/or use. Based on these findings, it is recommended that the total dietary load of metal ions be considered when assessing Mn toxicity.
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Affiliation(s)
- Zahraa A. Ghosn
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, USA
| | - Kailynn M. Sparks
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, USA
| | - Jacob L. Spaulding
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, USA
| | - Sanjana Vutukuri
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, USA
| | - Mirza J. J. Ahmed
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, USA
| | - Mark F. A. VanBerkum
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, USA
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6
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Saelee R, Haardörfer R, Johnson DA, Gazmararian JA, Suglia SF. Neighborhood and Household Environment as Contributors to Racial Disparities in Sleep Duration among U.S. Adolescents. Sleep Epidemiol 2023; 3:100065. [PMID: 38188485 PMCID: PMC10769009 DOI: 10.1016/j.sleepe.2023.100065] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Objective Racial disparities in adolescent sleep duration have been documented, but pathways driving these disparities are not well understood. This study examined whether neighborhood and household environments explained racial disparities in adolescent sleep duration. Methods Participants came from Waves I and II of Add Health (n=13,019). Self-reported short sleep duration was defined as less than the recommended amount for age (<9 hours for 6-12 years, <8 hours for 13-18 years, and <7 hours for 18-64 years). Neighborhood factors included neighborhood socioeconomic disadvantage, perceived safety and social cohesion. Household factors included living in a single parent household and household socioeconomic status (HSES). Structural equation modeling was used to assess mediation of the neighborhood and household environment in the association between race/ethnicity and short sleep duration. Results Only HSES mediated racial disparities, explaining non-Hispanic (NH) African American-NH White (11.6%), NH American Indian-NH White (9.9%), and Latinx-NH White (42.4%) differences. Unexpectedly, higher HSES was positively associated with short sleep duration. Conclusion Household SES may be an important pathway explaining racial disparities in adolescent sleep duration. Future studies should examine mechanisms linking household SES to sleep and identify buffers for racial/ethnic minority adolescents against the detrimental impacts that living in a higher household SES may have on sleep.
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Affiliation(s)
- Ryan Saelee
- Department of Epidemiology, Rollins School of Public Health, Emory University
| | - Regine Haardörfer
- Department of Behavioral, Social, and Health Education Sciences, Rollins School of Public Health, Emory University
| | - Dayna A. Johnson
- Department of Epidemiology, Rollins School of Public Health, Emory University
| | | | - Shakira F. Suglia
- Department of Epidemiology, Rollins School of Public Health, Emory University
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Klinger J, Berens EM, Schaeffer D. Health literacy and the role of social support in different age groups: results of a German cross-sectional survey. BMC Public Health 2023; 23:2259. [PMID: 37974154 PMCID: PMC10652531 DOI: 10.1186/s12889-023-17145-x] [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: 05/24/2023] [Accepted: 11/03/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND Scholars demand more focus on context-related factors of health literacy as the management of health information is seen as a social practice. One prominent factor is social support that is expected to be particularly relevant for persons vulnerable for low health literacy. It was shown that health literacy can differ across the life span and especially older people have been demonstrated to be vulnerable for low health literacy. Therefore, health literacy and the relation of social support on health literacy in different age groups should be investigated. METHODS In a German nationwide survey 2,151 adults were interviewed face-to-face. General comprehensive health literacy was measured with the HLS19-Q47 which differentiates single steps of health information management - access, understand, appraise, and apply. Social support was measured with the Oslo 3 Social Support Scale. Bivariate and multivariate analyses were performed for all respondents and for five age groups. RESULTS Health literacy is relatively low in all age groups but particularly low among old-old people (76 + years). Also, the youngest adults (18-29 years) have slightly lower health literacy than middle-aged adults. On average, health literacy is higher among people with higher social support but this association varies between age groups. It tends to be quite strong among younger adults (18-45 years) and young-old persons (65-75 years) but is weak among older middle-aged (46-64 years) and old-old persons. The association also differs between steps of information management. It is stronger for accessing and applying information but there are differences in age groups as well. CONCLUSIONS Social support is a relevant aspect to improve individuals' health literacy and therefore should be addressed in interventions. However, it is necessary to differentiate between age groups. While both young adults and particularly old-old persons are challenged by health information management, young adults can strongly profit from social support whereas it can barely compensate the low health literacy of old-old persons. In addition, different challenges in information management steps in different age groups need to be considered when designing health literacy interventions. Thus, target group specific services and programs are needed.
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Affiliation(s)
- Julia Klinger
- Institute of Sociology and Social Psychology, University of Cologne, 50931, Cologne, Germany
| | - Eva-Maria Berens
- Ethics Committee, Bielefeld University, 33501, Bielefeld, Germany
| | - Doris Schaeffer
- School of Public Health, Bielefeld University, 33501, Bielefeld, Germany.
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Sieng V, Szabó Á. Exploring the place attachments of older migrants in Aotearoa: A life course history approach. Adv Life Course Res 2023; 57:100560. [PMID: 38054865 DOI: 10.1016/j.alcr.2023.100560] [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: 12/13/2022] [Revised: 06/21/2023] [Accepted: 06/28/2023] [Indexed: 12/07/2023]
Abstract
Migrants are faced with the task of creating a sense of home in a new context. As migrants grow older in their host countries, they are also making important decisions on where to live out the rest of their lives, making salient the places they attach themselves to. Place attachment, and its subcomponents of place identity and place dependence, are concepts that have been explored in the ageing and migration literature, demonstrating that positive, emotional attachments to places are positively correlated with better health outcomes. Although it has been established that individuals' attachments to places are dynamic, multidimensional and change over the life course, there is a paucity of research exploring the place attachments of migrants as they age using a life course approach. This study adopted a life course approach to investigate how the components of place attachment shifted over time for migrant people in Aotearoa New Zealand as they aged, and to better understand the mechanisms and barriers to establishing a sense of home in a foreign land. We examined the narratives of ten older migrants (65 years or older) who migrated to Aotearoa before the age of 50. Key findings illustrated that all participants had strong place identities (i.e., explicit self-identification and sense of belonging) to their countries of origin before migrating to Aotearoa, all participants developed strong place dependence (i.e., fulfilment of functional needs) to Aotearoa over their life course, but not everyone was able to develop place identity to Aotearoa. Mechanisms such as language, cultural attitudes, and values can both facilitate and prevent attachments to either home or host country. These results uncover how Aotearoa's ageing migrants negotiate their attachments to places over the life course.
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Affiliation(s)
- Vanessa Sieng
- School of Health, Victoria University of Wellington, New Zealand
| | - Ágnes Szabó
- School of Health, Victoria University of Wellington, New Zealand.
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Hu HH, Li F, Mu T, Han LY, Feng XF, Ma YF, Jiang Y, Xue XS, Du BQ, Li RR, Ma Y. Genetic analysis of longevity and their associations with fertility traits in Holstein cattle. Animal 2023; 17:100851. [PMID: 37263130 DOI: 10.1016/j.animal.2023.100851] [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: 12/05/2022] [Revised: 04/28/2023] [Accepted: 05/02/2023] [Indexed: 06/03/2023] Open
Abstract
The increase of longevity is intended to reduce involuntary culling rates, not extend the life span, and it reflects the ability of animals to successfully cope with the environment and disease during production. Sire model, animal model and repeatability animal models were used to estimate the (co) variance components of longevity and fertility traits. Six longevity and thirteen fertility traits were analysed, including herd life (HL), productive life (PL), number of days between first calving and the end of first lactation or culling (L1); number of days between first calving and the end of the second lactation or culling (L2); number of days between first calving and the end of the third lactation or culling (L3); number of days between first calving and the end of the fourth lactation or culling (L4); age at first service, age at first calving (AFC), the interval from first to last inseminations in heifer (IFLh), conception rate of first insemination in heifer, days open (DO), calving interval, gestation length, interval from calving to first insemination (ICF), interval from first to last inseminations in cow (IFLc), conception rate of first insemination in cow, calving ease (CE), birth weight, and calf survival. The estimated heritabilities (±SE) were 0.018 (±0.003), 0.015 (±0.003), 0.049 (±0.004), 0.025 (±0.003), 0.009 (±0.002) and 0.011 (±0.002) for HL, PL, L1, L2, L3 and L4, respectively. Strong correlations were appeared in HL and PL; the genetic and phenotypic correlation coefficients were 0.998 and 0.985, respectively. There were high genetic and phenotypic correlations which were observed in L1 and L2, L2 and L3, L3 and L4, respectively. All fertility traits of heifer showed medium to high heritability, while the cow showed low heritability. All heifer fertility traits had low genetic associations with longevity traits, ranging from -0.018 (L2 and IFLh) to 0.257 (L3 and AFC). Most of the fertility traits showed negative correlations with longevity traits in different parities, and we recommend DO, ICF, IFLc and CE as indirect indicators of longevity traits in dairy cows, but we also need to take into account the differences between parities.
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Affiliation(s)
- H H Hu
- College of Animal Science and Technology, Ningxia Key Laboratory of Ruminant Molecular and Cellular Breeding, Ningxia University, Yinchuan 750021, China
| | - F Li
- College of Animal Science and Technology, Ningxia Key Laboratory of Ruminant Molecular and Cellular Breeding, Ningxia University, Yinchuan 750021, China
| | - T Mu
- College of Animal Science and Technology, Ningxia Key Laboratory of Ruminant Molecular and Cellular Breeding, Ningxia University, Yinchuan 750021, China
| | - L Y Han
- Ningxia Agriculture Reclamation Helanshan Dairy Co. Ltd, Yinchuan 750021, China
| | - X F Feng
- College of Animal Science and Technology, Ningxia Key Laboratory of Ruminant Molecular and Cellular Breeding, Ningxia University, Yinchuan 750021, China
| | - Y F Ma
- College of Animal Science and Technology, Ningxia Key Laboratory of Ruminant Molecular and Cellular Breeding, Ningxia University, Yinchuan 750021, China
| | - Y Jiang
- Key Laboratory of Animal Genetics, Breeding and Reproduction Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - X S Xue
- College of Animal Science and Technology, Ningxia Key Laboratory of Ruminant Molecular and Cellular Breeding, Ningxia University, Yinchuan 750021, China
| | - B Q Du
- College of Animal Science and Technology, Ningxia Key Laboratory of Ruminant Molecular and Cellular Breeding, Ningxia University, Yinchuan 750021, China
| | - R R Li
- College of Animal Science and Technology, Ningxia Key Laboratory of Ruminant Molecular and Cellular Breeding, Ningxia University, Yinchuan 750021, China
| | - Y Ma
- College of Animal Science and Technology, Ningxia Key Laboratory of Ruminant Molecular and Cellular Breeding, Ningxia University, Yinchuan 750021, China.
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Li H, Yu Z, Niu Z, Cheng Y, Wei Z, Cai Y, Ma F, Hu L, Zhu J, Zhang W. A neuroprotective role of Ufmylation through Atg9 in the aging brain of Drosophila. Cell Mol Life Sci 2023; 80:129. [PMID: 37086384 DOI: 10.1007/s00018-023-04778-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 02/28/2023] [Revised: 04/09/2023] [Accepted: 04/11/2023] [Indexed: 04/23/2023]
Abstract
Ufmylation is a recently identified small ubiquitin-like modification, whose biological function and relevant cellular targets are poorly understood. Here we present evidence of a neuroprotective role for Ufmylation involving Autophagy-related gene 9 (Atg9) during Drosophila aging. The Ufm1 system ensures the health of aged neurons via Atg9 by coordinating autophagy and mTORC1, and maintaining mitochondrial homeostasis and JNK (c-Jun N-terminal kinase) activity. Neuron-specific expression of Atg9 suppresses the age-associated movement defect and lethality caused by loss of Ufmylation. Furthermore, Atg9 is identified as a conserved target of Ufm1 conjugation mediated by Ddrgk1, a critical regulator of Ufmylation. Mammalian Ddrgk1 was shown to be indispensable for the stability of endogenous Atg9A protein in mouse embryonic fibroblast (MEF) cells. Taken together, our findings might have important implications for neurodegenerative diseases in mammals.
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Affiliation(s)
- Huifang Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhenghong Yu
- Department of Rheumatology and Immunology, Jinling Hospital, Affiliated Hosptial of Medical School, Nanjing University, Nanjing, 210002, China
| | - Zikang Niu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yun Cheng
- Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, 210009, China
| | - Zhenhao Wei
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yafei Cai
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Fei Ma
- College of Life Science, Nanjing Normal University, Nanjing, 210023, China
| | - Lanxin Hu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jiejie Zhu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wei Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
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11
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Kazarina A, Kuzmicka J, Bortkevica S, Zayakin P, Kimsis J, Igumnova V, Sadovska D, Freimane L, Kivrane A, Namina A, Capligina V, Poksane A, Ranka R. Oral microbiome variations related to ageing: possible implications beyond oral health. Arch Microbiol 2023; 205:116. [PMID: 36920536 PMCID: PMC10016173 DOI: 10.1007/s00203-023-03464-5] [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] [Accepted: 03/02/2023] [Indexed: 03/16/2023]
Abstract
The global population is getting older due to a combination of longer life expectancy and declining birth rates. Growing evidence suggests that the oral microbiota composition and distribution may have a profound effect on how well we age. The purpose of this study was to investigate age-related oral microbiome variations of supragingival plaque and buccal mucosa samples in the general population in Latvia. Our results indicated significant difference between supragingival plaque bacterial profiles of three age groups (20-40; 40-60; 60 + years). Within supragingival plaque samples, age group 20-40 showed the highest bacterial diversity with a decline during the 40-60 age period and uprise again after the age of 60. Among other differences, the important oral commensal Neisseria had declined after the age of 40. Additionally, prevalence of two well-documented opportunistic pathogens Streptococcus anginosus and Gemella sanguinis gradually rose with age within our samples. Furthermore, supragingival plaque and buccal mucosa samples significantly differed in overall bacterial composition.
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Affiliation(s)
- Alisa Kazarina
- Laboratory of Molecular Biology, Latvian Biomedical Research and Study Centre, 1 Ratsupites Str., Riga, LV-1067, Latvia.
| | | | - Santa Bortkevica
- Riga Stradins University, 16 Dzirciema Str., Riga, LV-1007, Latvia
| | - Pawel Zayakin
- Laboratory of Molecular Biology, Latvian Biomedical Research and Study Centre, 1 Ratsupites Str., Riga, LV-1067, Latvia
| | - Janis Kimsis
- Laboratory of Molecular Biology, Latvian Biomedical Research and Study Centre, 1 Ratsupites Str., Riga, LV-1067, Latvia
| | - Viktorija Igumnova
- Laboratory of Molecular Biology, Latvian Biomedical Research and Study Centre, 1 Ratsupites Str., Riga, LV-1067, Latvia
| | - Darja Sadovska
- Laboratory of Molecular Biology, Latvian Biomedical Research and Study Centre, 1 Ratsupites Str., Riga, LV-1067, Latvia
| | - Lauma Freimane
- Laboratory of Molecular Biology, Latvian Biomedical Research and Study Centre, 1 Ratsupites Str., Riga, LV-1067, Latvia
| | - Agnija Kivrane
- Laboratory of Molecular Biology, Latvian Biomedical Research and Study Centre, 1 Ratsupites Str., Riga, LV-1067, Latvia
| | - Agne Namina
- Laboratory of Molecular Biology, Latvian Biomedical Research and Study Centre, 1 Ratsupites Str., Riga, LV-1067, Latvia
| | - Valentina Capligina
- Laboratory of Molecular Biology, Latvian Biomedical Research and Study Centre, 1 Ratsupites Str., Riga, LV-1067, Latvia
| | - Alise Poksane
- Laboratory of Molecular Biology, Latvian Biomedical Research and Study Centre, 1 Ratsupites Str., Riga, LV-1067, Latvia
| | - Renate Ranka
- Laboratory of Molecular Biology, Latvian Biomedical Research and Study Centre, 1 Ratsupites Str., Riga, LV-1067, Latvia
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12
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Fredriksen-Goldsen K. Blueprint for Future Research Advancing the Study of Sexuality, Gender, and Equity in Later Life: Lessons Learned From Aging With Pride, The National Health, Aging, and Sexuality/Gender Study (NHAS). Gerontologist 2023; 63:373-381. [PMID: 36254775 PMCID: PMC9960017 DOI: 10.1093/geront/gnac146] [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: 05/03/2022] [Indexed: 11/12/2022] Open
Abstract
While interest in sexuality\research is growing, in the past, it has been largely invisible in gerontology. By exploring the full range and dimensions of sexuality and their interrelationships with multiple factors, this article presents conceptual, substantive, and methodological advances for the field of sexuality in later life. Based on the Sexual Equity Framework, an extension of the Health Equity Promotion Model, this article highlights the heterogeneity and intersectionality of sexuality across the life course, examining how historical and contemporary contexts frame key dimensions of sexuality at multiple levels (intrapersonal, interpersonal, sociocultural, and structural) and their relationship with sexual quality of life. Utilizing findings from Aging with Pride: National Health, Aging and Sexuality/Gender Study, the heterogeneity and intersectionality of age, gender, race, and ethnicity are critical to understanding sexuality and its dimensions in later life. Many adults experience changes in sexual and gender identities over time. Affirming sexual and gender identities, social connections, and health-promoting behaviors are positively associated with sexual quality of life, while sexual stigma and marginalization have adverse consequences. The study of sexuality needs to be fully integrated into gerontology. The Sexual Equity Framework explicates the potential deleterious effect of historical and contemporary structures on sexuality as well the important roles of affirmation, agency, and resilience among older adults, and recognizes the important role of human rights to advance sexual quality of life. Important directions for future research, practices, and policies are outlined.
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13
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Sabini E, O'Mahony A, Caturegli P. MyMD-1 Improves Health Span and Prolongs Life Span in Old Mice: A Noninferiority Study to Rapamycin. J Gerontol A Biol Sci Med Sci 2023; 78:227-235. [PMID: 35914953 DOI: 10.1093/gerona/glac142] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 11/19/2021] [Indexed: 11/13/2022] Open
Abstract
Aging and age-related diseases represent a compelling therapeutic goal for senolytics and drugs targeting inflammatory or metabolic pathways. We compared MyMD-1, a synthetic derivative of the alkaloid myosmine capable of suppressing TNF-α production, to rapamycin, the best characterized drug endowed with antiaging properties. In vivo, a longitudinal cohort of 54 C57BL/6 mice, 19-month-old at the start, was randomized to receive MyMD-1, high-dose (126 ppm) rapamycin, or low-dose (14 ppm) rapamycin plus metformin. Each treatment arm included 18 mice (10 females and 8 males) and was followed for 16 months or until death. Life span was significantly longer in MyMD-1 than rapamycin (p = .019 vs high-dose and .01 vs low-dose) in a Cox survival model that accounted for sex and serum levels of IL-6, TNF-α, and IL-17A. MyMD-1 also improved several health span characteristics, resulting in milder body weight loss, greater muscle strength, and slower progression to frailty. In vitro, MyMD-1 and rapamycin were compared using a panel of 12 human primary cell systems (BioMAP Diversity PLUS), where a total of 148 biomarkers were measured. MyMD-1 possessed antiproliferative, anti-inflammatory, and antifibrotic properties. Many were shared with rapamycin, but MyMD-1 was more active in the inhibition of proinflammatory and profibrotic biomarkers. Overall, MyMD-1 emerges as a new compound that, even when begun at an advanced age, induces beneficial effects on health and life span by modulating inflammation and tissue remodeling.
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Affiliation(s)
- Elena Sabini
- Johns Hopkins Hospital, School of Medicine, Department of Pathology, Baltimore, Maryland, USA
| | - Alison O'Mahony
- Eurofins Discovery, Phenotypic Services, St. Charles, Missouri, USA
| | - Patrizio Caturegli
- Johns Hopkins Hospital, School of Medicine, Department of Pathology, Baltimore, Maryland, USA
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14
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Kumari P, Ain U, Firdaus H. A Reliable and Consistent Method to Quantify Percent Lethality and Life Span in Drosophila melanogaster. Bio Protoc 2023; 13:e4598. [PMID: 36789168 PMCID: PMC9901450 DOI: 10.21769/bioprotoc.4598] [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: 08/22/2022] [Revised: 10/17/2022] [Accepted: 01/03/2023] [Indexed: 01/20/2023] Open
Abstract
Drosophila melanogaster is a classic model organism to study gene function as well as toxicological effects. To study gene function, the expression of a particular gene of interest is disrupted by using the widely explorable Drosophila genetic toolkit, whereas to study toxicological effects the flies are exposed to a particular toxicant through diet. These experiments often require the quantification of lethality from embryonic to adult stages, as well as the assessment of the life span in order to check the role of the gene/toxicant of interest in Drosophila. Here, we propose an experimental protocol that enables a consistent and rigorous assessment of lethality and life span of cadmium chloride (CdCl2)-exposed or genetically perturbed flies [downregulation and overexpression of the cytosolic Cu, Zn superoxide dismutase (SOD1) gene], consecutively. The protocol insists upon the requirement of one single experimental setup that is unique, distinctive, and cost-effective as it engages minimal laboratory equipment and resources. The described methods lead to the smooth observation of the embryos, their successive stagewise transition, and life span of the adult flies post eclosion. Additionally, these methods also facilitate the assessment of crawling and climbing behavioral parameters of the larvae and adults, respectively, and allow the calculation of lethal concentration (LC50) for the mentioned toxicant as well as median survival of the flies, which can be a determining factor in proceeding with further stages of experiments. Graphical abstract.
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Affiliation(s)
- Priyanka Kumari
- Department of Life Sciences, Central University of Jharkhand, CTI Campus, Ratu-Lohardaga Road, Ranchi-835205, India
| | - Ushashi Ain
- Department of Life Sciences, Central University of Jharkhand, CTI Campus, Ratu-Lohardaga Road, Ranchi-835205, India
| | - Hena Firdaus
- Department of Life Sciences, Central University of Jharkhand, CTI Campus, Ratu-Lohardaga Road, Ranchi-835205, India; ,*For correspondence:
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15
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Zöngür A, Sari M. Herbicides widely used in the world: an investigation of toxic effects on Caenorhabditis elegans. Biol Futur 2023. [PMID: 36639591 DOI: 10.1007/s42977-023-00152-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 01/06/2023] [Indexed: 01/15/2023]
Abstract
Dicamba, paraquat, picloram, clopyralid and linuron are herbicides widely used in agriculture. The aim of the present study is to evaluate the toxicity effects of the herbicides used on survival, fertility and length of Caenorhabditis elegans. Kaplan-Meier Survival Analysis method was used to identify the toxicity effect of herbicides on survival, and ANOVA and Post Hoc tests were used to determine the toxicity effects on fertility and length. In the study, C. elegans was exposed to 5 different concentrations (62.5, 125, 250, 500, 1000 µM) of each herbicide. When the results were evaluated, it was observed that survival (life span) and length (physical growth) were more affected, respectively, by paraquat, dicamba, linuron, picloram and clopyralid herbicides, fertility (egg productivity) were more affected, respectively, by paraquat, linuron, dicamba, picloram and clopyralid herbicides. As a result, it was determined that increasing the dose amounts of herbicides caused many toxic reactions on C. elegans, affecting survival, egg productivity and length.
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16
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Bi J, Wen M, Guo X, Dai H, He Y, Shu Z. Ozone reduces lifespan and alters gene expression profiles in Rhyzopertha dominica (Fabricius). 3 Biotech 2022; 12:345. [PMID: 36386568 PMCID: PMC9646687 DOI: 10.1007/s13205-022-03397-8] [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: 07/28/2022] [Accepted: 10/12/2022] [Indexed: 11/11/2022] Open
Abstract
Rhyzopertha dominica is one of the most important stored grain pests that seriously damage rice and wheat. At present, the method of controlling stored grain pests mainly relies on insecticide fumigation. However, the excessive use of pesticides not only leaves pesticide residues, with harmful effects on human health and the environment, but also induces insect resistance. Ozone is a strong oxidant with the characteristics of easy decomposition and without residue. Although ozone has been widely used in the food industry in recent years, research on the control of stored grain pests is limited. In this research, we used ozone treatment to control R. dominica adults and explore the molecular mechanisms that affect them. Here, we found that ozone treatment on R. dominica adults could decrease life span and increase malondialdehyde (MDA) content, as well as reduce activity of total superoxide dismutase (SOD) and catalase (CAT). Using RNA-seq technology, we identified 641 genes that were differentially expressed between ozone-treated and control R. dominica adults [fold-change of ≥ 2 (q-value < 5%)]. When comparing ozone treatment with control R. dominica adults, 330 genes were significantly upregulated and 311 were downregulated. RT-qPCR confirmed that 11 genes were differentially expressed in ozone-treated and control R. dominica adults. These genes were involved in insect cuticle protein and antioxidant system. This research showed that ozone treatment could reduce the lifespan of R. dominica through antioxidant system. It is an environmentally benign method for the control of stored grain pests and has great development potential.
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Affiliation(s)
- Jie Bi
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023 People’s Republic of China
| | - Mingming Wen
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023 People’s Republic of China
| | - Xuguang Guo
- The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Huang Dai
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023 People’s Republic of China
| | - Yanping He
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023 People’s Republic of China
| | - Zaixi Shu
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023 People’s Republic of China
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17
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Wang M, Zhang Y, Bakhshipour AE, Liu M, Rao Q, Lu Z. Designing coupled LID-GREI urban drainage systems: Resilience assessment and decision-making framework. Sci Total Environ 2022; 834:155267. [PMID: 35447181 DOI: 10.1016/j.scitotenv.2022.155267] [Citation(s) in RCA: 2] [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: 02/18/2022] [Revised: 04/09/2022] [Accepted: 04/10/2022] [Indexed: 06/14/2023]
Abstract
As flooding risks rise in urban areas, research suggests combining low impact development (LID) and grey infrastructure (GREI) in urban drainage systems. Several frameworks have been proposed to plan such coupled systems, but there is not a comprehensive framework to assess their resilience under diverse failure scenarios and sources of uncertainty. This study proposes a framework which considers both technological and operational resilience. Technological resilience has to do with the performance of the system under extreme loads. Operational resilience has to do with the performance and long-term efficiency of the system after structural damage or degradation, using appropriate probability distributions to quantify the likelihood of failures. The proposed framework is based on an optimization and multi-criteria decision-making platform. It improves on previous research, which lacked consideration of uncertainty in resilience over the life span. We also apply the proposed framework to a real-world test case, and find that in a high-density urban area, a coupled system is more cost-effective than GREI alone. Furthermore, decentralized systems with greater flexibility show significantly better technological and operational resilience. The proposed framework can better support decision-making for planning robust and cost-effective urban drainage systems, particularly in highly urbanized areas.
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Affiliation(s)
- Mo Wang
- College of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, China.
| | - Yu Zhang
- College of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, China.
| | - Amin E Bakhshipour
- Civil Engineering, Institute of Urban Water Management, University of Kaiserslautern, Kaiserslautern 67663, Germany.
| | - Ming Liu
- College of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, China.
| | - Qiuyi Rao
- College of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, China.
| | - Zhongming Lu
- Division of Environment and Sustainability, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
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18
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Orsholits D, Cullati S, Ghisletta P, Aartsen MJ, Oris M, Studer M, Maurer J, Perna L, Gouveia ÉR, Gouveia BR, Marques A, Peralta M, Marconcin P, Kliegel M, Ihle A. How Welfare Regimes Moderate the Associations Between Cognitive Aging, Education, and Occupation. J Gerontol B Psychol Sci Soc Sci 2022; 77:1615-1624. [PMID: 35090001 PMCID: PMC9757157 DOI: 10.1093/geronb/gbac013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 09/28/2021] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVES Previous studies have shown the importance of individual markers of cognitive reserve, such as education and occupation, for cognitive health in old age. However, there has been only little investigation so far on how this relationship varies across contexts. METHODS We analyzed data from the Survey of Health, Ageing, and Retirement in Europe, using second-order latent growth models, to assess the moderating role of welfare regimes on the relationship between education and occupation skill level in explaining overall cognitive functioning and decline in old age. Our sample includes 13 European countries using data from 5 regular waves of the survey (2004-2007 and 2011-2015) and 2 retrospective ones (2008-2009 and 2017). Cognitive functioning was modeled as a latent variable measured by immediate and delayed recall, verbal fluency, and numeracy. RESULTS 74,193 participants were included from the survey. Our analysis showed that the association of education with cognition was weaker overall in Scandinavian countries, but stronger in Southern European countries, relative to Bismarckian ones. However, educational differences in the decline of cognition were more pronounced only in Scandinavian compared to Bismarckian countries. Additionally, higher-skilled occupations in Scandinavian countries had better overall functioning compared to the same occupations in Bismarckian countries, but there was no difference in the decline in cognitive functioning. DISCUSSION Our findings indicate that the associations of cognitive functioning and its decline with individuals' cognitive reserve markers (education and occupational skill level) vary according to welfare regimes, showing the importance of contextual factors in cognitive aging processes.
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Affiliation(s)
- Dan Orsholits
- Address correspondence to: Dan Orsholits, PhD, Centre for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, 1205 Geneva, Switzerland. E-mail:
| | - Stéphane Cullati
- Population Health Laboratory, Department of Community Health, University of Fribourg, Fribourg, Switzerland,Department of Readaptation and Geriatrics, University of Geneva, Geneva, Switzerland
| | - Paolo Ghisletta
- Swiss National Centre of Competence in Research LIVES—Overcoming vulnerability: Life Course Perspectives, Lausanne and Geneva, Switzerland,Department of Psychology, University of Geneva, Geneva, Switzerland,UniDistance Suisse, Brig, Switzerland
| | - Marja J Aartsen
- NOVA, Norwegian Social Research, Oslo Metropolitan University, Oslo, Norway
| | - Michel Oris
- Centre for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, Geneva, Switzerland,Swiss National Centre of Competence in Research LIVES—Overcoming vulnerability: Life Course Perspectives, Lausanne and Geneva, Switzerland
| | - Matthias Studer
- Swiss National Centre of Competence in Research LIVES—Overcoming vulnerability: Life Course Perspectives, Lausanne and Geneva, Switzerland,Institute of Demography and Socioeconomics, University of Geneva, Geneva, Switzerland
| | - Jürgen Maurer
- Swiss National Centre of Competence in Research LIVES—Overcoming vulnerability: Life Course Perspectives, Lausanne and Geneva, Switzerland,Department of Economics, University of Lausanne, Lausanne, Switzerland
| | - Laura Perna
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany,Division of Mental Health of Older Adults, Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Élvio R Gouveia
- Centre for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, Geneva, Switzerland,Department of Physical Education and Sport, University of Madeira, Funchal, Portugal,LARSyS, Interactive Technologies Institute, Funchal, Portugal
| | - Bruna R Gouveia
- Centre for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, Geneva, Switzerland,LARSyS, Interactive Technologies Institute, Funchal, Portugal,Health Administration Institute, Secretary of Health of the Autonomous Region of Madeira, Funchal, Portugal,Saint Joseph of Cluny Higher School of Nursing, Funchal, Portugal
| | - Adilson Marques
- CIPER, Faculty of Human Kinetics, University of Lisbon, Lisbon, Portugal,ISAMB, University of Lisbon, Lisbon, Portugal
| | - Miguel Peralta
- CIPER, Faculty of Human Kinetics, University of Lisbon, Lisbon, Portugal,ISAMB, University of Lisbon, Lisbon, Portugal
| | - Priscila Marconcin
- CIPER, Faculty of Human Kinetics, University of Lisbon, Lisbon, Portugal
| | - Matthias Kliegel
- Centre for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, Geneva, Switzerland,Swiss National Centre of Competence in Research LIVES—Overcoming vulnerability: Life Course Perspectives, Lausanne and Geneva, Switzerland,Department of Psychology, University of Geneva, Geneva, Switzerland
| | - Andreas Ihle
- Centre for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, Geneva, Switzerland,Swiss National Centre of Competence in Research LIVES—Overcoming vulnerability: Life Course Perspectives, Lausanne and Geneva, Switzerland,Department of Psychology, University of Geneva, Geneva, Switzerland
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19
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Bartholomew CL, Muhlestein JB, Anderson JL, May HT, Knowlton KU, Bair TL, Le VT, Bailey BW, Horne BD. Association of periodic fasting lifestyles with survival and incident major adverse cardiovascular events in patients undergoing cardiac catheterization. Eur J Prev Cardiol 2022; 28:1774-1781. [PMID: 33624026 DOI: 10.1093/eurjpc/zwaa050] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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] [Received: 05/29/2020] [Revised: 06/26/2020] [Accepted: 08/10/2020] [Indexed: 12/12/2022]
Abstract
AIMS Animal models repeatedly show fasting increases longevity. Human data, though, are limited to anecdotal claims. This study evaluated the association of routine fasting with survival and, secondarily, with incident major adverse cardiovascular events. METHODS AND RESULTS Cardiac catheterization patients enrolled in the Intermountain INSPIRE longitudinal cohort (n = 2785) during 2013-2015 were followed through March 2019. A fasting survey was completed in n = 2025 (73%) of this cohort and 1957 were included in the final data analysis after 68 participants were removed (24 for data issues and 44 for fasting less than 5 years). Self-reported routine fasting behaviour, years of participation in fasting, and other fasting characteristics were surveyed. Mortality was the primary outcome and incident myocardial infarction (MI), stroke, and heart failure (HF) were secondary. Routine fasters (n = 389, mean age 64 ± 14 years, 34% female) averaged 42 ± 18 years of routine fasting (minimum 5 years). Non-fasters (n = 1568, aged 63 ± 14 years, 36% female) included never fasters (n = 1120 with 0 years of fasting) and previous fasters (n = 448 who averaged 32 ± 21 years of prior fasting but had stopped prior to enrolment). Routine fasters had greater survival vs. non-fasters [adjusted hazard ratio (HR) = 0.54, 95% confidence interval (CI) = 0.36-0.80; P = 0.002] and lower incidence of HF (adjusted HR = 0.31, CI = 0.12-0.78; P = 0.013), but not MI or stroke after adjustment. CONCLUSIONS Routine fasting followed during two-thirds of the lifespan was associated with higher survival after cardiac catheterization. This may in part be explained by an association of routine fasting with a lower incidence of HF. CLINICAL STUDY REGISTRATION The Intermountain INSPIRE registry https://clinicaltrials.gov/, NCT02450006.
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Affiliation(s)
- Ciera L Bartholomew
- Department of Exercise Sciences, 106 SFH, Brigham Young University, Provo, UT 84602, USA
| | - Joseph B Muhlestein
- Intermountain Medical Center Heart Institute, 5121 S. Cottonwood St., Salt Lake City, UT 84107, USA.,Cardiology Division, Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA
| | - Jeffrey L Anderson
- Intermountain Medical Center Heart Institute, 5121 S. Cottonwood St., Salt Lake City, UT 84107, USA.,Cardiology Division, Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA
| | - Heidi T May
- Intermountain Medical Center Heart Institute, 5121 S. Cottonwood St., Salt Lake City, UT 84107, USA
| | - Kirk U Knowlton
- Intermountain Medical Center Heart Institute, 5121 S. Cottonwood St., Salt Lake City, UT 84107, USA.,Division of Cardiovascular Medicine, Department of Medicine, University of California San Diego, 9500 Gilman Drive, Mail Code 7411, La Jolla, CA 92037-7411 USA
| | - Tami L Bair
- Intermountain Medical Center Heart Institute, 5121 S. Cottonwood St., Salt Lake City, UT 84107, USA
| | - Viet T Le
- Intermountain Medical Center Heart Institute, 5121 S. Cottonwood St., Salt Lake City, UT 84107, USA.,Principle PA Faculty, Rocky Mountain University of Health Professions, 122 E 1700 S building 3, Provo, UT 84606, USA
| | - Bruce W Bailey
- Department of Exercise Sciences, 106 SFH, Brigham Young University, Provo, UT 84602, USA
| | - Benjamin D Horne
- Intermountain Medical Center Heart Institute, 5121 S. Cottonwood St., Salt Lake City, UT 84107, USA.,Division of Cardiovascular Medicine, Department of Medicine, Stanford University, 870 Quarry Road, Stanford, CA 94305, USA
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20
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André C, Bibeault JF, Gagné F. Identifying physiological traits of species resilience against environmental stress in freshwater mussels. Ecotoxicology 2021; 30:1862-1871. [PMID: 34379242 DOI: 10.1007/s10646-021-02457-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
The advent of global warming events on already stressed organisms by pollution and loss of habitats raised concerns on the sustainability of local mussel populations. The purpose of this study was to study the physiology 6 commonly found species of freshwater mussels in the attempt to identify species at risk from global warming and pollution. The following species were examined for mass/length, energy metabolism, air survival and lipid peroxidation (LPO): Elliptio complanata (EC), Eurynia dilatata (ED), Pyganodon cataracta (PC), Pyganodon species (Psp), Lasmigona costata (LC) and Dreissena bugenis (DB). The data revealed that the estimated longevity of each species was associated with mussel mass, mitochondria electron transport (MET), temperature-dependent MET but negatively related with mitochondria levels in LPO and the colonization potential. The colonization potential was derived from the scaling of MET activity and mass, which confirmed that DB mussels are more invasive than the other species followed by Psp. Resistance to air emersion was significantly associated with longevity, mass and length and mitochondria LPO. Hence, organisms with low lifetimes, mass or length with high LPO are less able to survive for longer periods in air. In conclusion, longevity and air survival was positively associated with mass and energy metabolism but negatively with oxidative damage. This study proposes key markers in identifying species more at risk to contaminant stress, decreased water levels and global warming.
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Affiliation(s)
- C André
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, 105 McGill, Montréal, QC, Canada
| | - J F Bibeault
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, 105 McGill, Montréal, QC, Canada
| | - F Gagné
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, 105 McGill, Montréal, QC, Canada.
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21
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Abstract
Understanding the molecular mechanisms of normal aging is a prerequisite to significantly improving human health span. Caloric restriction (CR) can delay aging and has served as a yardstick to evaluate interventions extending life span. However, mice given unlimited access to food suffer severe obesity. Health gains from CR depend on control mice being sufficiently overweight and less obese mouse strains benefit far less from CR. Pharmacologic interventions that increase life span, including resveratrol, rapamycin, nicotinamide mononucleotide and metformin, also reduce body weight. In primates, CR does not delay aging unless the control group is eating enough to suffer from obesity-related disease. Human survival is optimal at a body mass index achievable without CR, and the above interventions are merely diet aids that shouldn't slow aging in healthy weight individuals. CR in humans of optimal weight can safely be declared useless, since there is overwhelming evidence that hunger, underweight and starvation reduce fitness, survival, and quality of life. Against an obese control, CR does, however, truly delay aging through a mechanism laid out in the following tumor suppression theory of aging.
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Affiliation(s)
- Alexander M Wolf
- Laboratory for Morphological and Biomolecular Imaging, Faculty of Medicine, Nippon Medical School, Japan.
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22
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Abstract
OBJECTIVES Older age has been found to relate to a higher level of empathic concern and prosocial tendencies in many studies, but there are also studies that found contradictory results. To fully understand the phenomenon, we propose that socioeconomic status (SES) is an important factor to consider when examining differences in empathic concern and prosocial tendencies. METHOD Two studies with Hong Kong Chinese participants were conducted to test the moderating effect of SES on the relationship between age and empathic concern. Both studies assessed participants' age, SES, empathic concern, and background information, while Study 2 also examined different indicators of prosocial tendencies. RESULTS SES consistently moderated age differences in empathic concern in the two studies. The positive association between age and empathic concern was only significant for individuals with low SES, but not for those with high SES. Study 2 further revealed that the positive indirect effects from age to prosocial tendencies through a higher level of empathic concern were only significant for individuals with low SES as well. DISCUSSION The results highlighted the importance to consider contextual factors when studying age-related differences.
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Affiliation(s)
- Tianyuan Li
- Department of Psychology and Centre for Psychosocial Health, Education University of Hong Kong, China
| | - Pok-Man Siu
- Department of Psychology and Centre for Psychosocial Health, Education University of Hong Kong, China
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23
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Abstract
Attention-deficit/hyperactivity disorder (ADHD), characterized by inattention, impulsivity and hyperactivity is a major health problem. This paper discusses ADHD across the life span and looks at the impact of debilitating symptoms, diagnosis, and treatment in athletes. Psychosocial interventions, with or without psychopharmacology including stimulants and nonstimulants, are discussed to help athletes achieve their highest level of symptom abatement and functioning. The age of the patient, the sport played, the athlete's overall health, and the regulations of the sport-governing body play a role in determining the most appropriate treatment.
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Affiliation(s)
- Lisa MacLean
- Henry Ford Health System, One Ford Place, 1C, Detroit, MI 48202, USA
| | - Deepak Prabhakar
- Sheppard Pratt, 6501 North Charles Street, Baltimore, MD 21204, USA.
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24
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Takashi Y, Sawatsubashi S, Endo I, Ohnishi Y, Abe M, Matsuhisa M, Kawanami D, Matsumoto T, Fukumoto S. Skeletal FGFR1 signaling is necessary for regulation of serum phosphate level by FGF23 and normal life span. Biochem Biophys Rep 2021; 27:101107. [PMID: 34458594 PMCID: PMC8379418 DOI: 10.1016/j.bbrep.2021.101107] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 12/02/2022] Open
Abstract
Fibroblast growth factor (FGF) 23 produced by the bone is the principal hormone to regulate serum phosphate level. Serum FGF23 needs to be tightly regulated to maintain serum phosphate in a narrow range. Thus, we hypothesized that the bone has some phosphate-sensing mechanism to regulate the production of FGF23. Previously we showed that extracellular phosphate induces the phosphorylation of FGF receptor 1 (FGFR1) and FGFR1 signaling regulates the expression of Galnt3, whose product works to increase FGF23 production in vitro. In this study, we show the significance of FGFR1 in the regulated FGF23 production and serum phosphate level in vivo. We generated late-osteoblast/osteocyte-specific Fgfr1-knockout mice (Fgfr1fl/fl; OcnCre/+) by crossing the Ocn-Cre and the floxed Fgfr1 mouse lines. We evaluated serum phosphate and FGF23 levels, the expression of Galnt3 in the bone, the body weight and life span. A selective ablation of Fgfr1 aborted the increase of serum active full-length FGF23 and the enhanced expression of Galnt3 in the bone by a high phosphate diet. These mice showed more pronounced hyperphosphatemia compared with control mice. In addition, these mice fed with a control diet showed body weight loss after 23 weeks of age and shorter life span. These results reveal a novel significance of FGFR1 signaling in the phosphate metabolism and normal life span.
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Affiliation(s)
- Yuichi Takashi
- Department of Endocrinology and Diabetes Mellitus, Fukuoka University School of Medicine, Fukuoka, Japan.,Department of Molecular Endocrinology, Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan.,Department of Hematology, Endocrinology and Metabolism, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan.,Diabetes Therapeutics and Research Center, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Shun Sawatsubashi
- Department of Molecular Endocrinology, Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Itsuro Endo
- Department of Hematology, Endocrinology and Metabolism, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Yukiyo Ohnishi
- Department of Hematology, Endocrinology and Metabolism, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Masahiro Abe
- Department of Hematology, Endocrinology and Metabolism, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Munehide Matsuhisa
- Diabetes Therapeutics and Research Center, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Daiji Kawanami
- Department of Endocrinology and Diabetes Mellitus, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Toshio Matsumoto
- Department of Molecular Endocrinology, Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Seiji Fukumoto
- Department of Molecular Endocrinology, Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
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25
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Wahl D, Cavalier AN, Smith M, Seals DR, LaRocca TJ. Healthy Aging Interventions Reduce Repetitive Element Transcripts. J Gerontol A Biol Sci Med Sci 2021; 76:805-810. [PMID: 33257951 DOI: 10.1093/gerona/glaa302] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 09/16/2020] [Indexed: 12/28/2022] Open
Abstract
Transcripts from noncoding repetitive elements (REs) in the genome may be involved in aging. However, they are often ignored in transcriptome studies on healthspan and lifespan, and their role in healthy aging interventions has not been characterized. Here, we analyze REs in RNA-seq datasets from mice subjected to robust healthspan- and lifespan-increasing interventions including calorie restriction, rapamycin, acarbose, 17-α-estradiol, and Protandim. We also examine RE transcripts in long-lived transgenic mice, and in mice subjected to a high-fat diet, and we use RNA-seq to investigate the influence of aerobic exercise on RE transcripts with aging in humans. We find that (a) healthy aging interventions/behaviors globally reduce RE transcripts, whereas aging and high-fat diet (an age-accelerating treatment) increase RE expression; and (b) reduced RE expression with healthy aging interventions is associated with biological/physiological processes mechanistically linked with aging. Our results suggest that RE transcript dysregulation and suppression are likely novel mechanisms underlying aging and healthy aging interventions, respectively.
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Affiliation(s)
- Devin Wahl
- Department of Health and Exercise Science, Colorado State University, Fort Collins.,Center for Healthy Aging, Colorado State University, Fort Collins
| | - Alyssa N Cavalier
- Department of Health and Exercise Science, Colorado State University, Fort Collins.,Center for Healthy Aging, Colorado State University, Fort Collins
| | - Meghan Smith
- Department of Health and Exercise Science, Colorado State University, Fort Collins.,Center for Healthy Aging, Colorado State University, Fort Collins
| | - Douglas R Seals
- Department of Integrative Physiology, University of Colorado Boulder
| | - Thomas J LaRocca
- Department of Health and Exercise Science, Colorado State University, Fort Collins.,Center for Healthy Aging, Colorado State University, Fort Collins
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26
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De Spiegeleer A, Van Migerode J, Bronselaer A, Wynendaele E, Peelman M, Vandaele F, Byttebier G, De Tré G, Belmans L, Van De Wiele C, Sathekge M, Van Dijck D, Saxberg B, Alexander M, Fedson D, Elewaut D, Van Den Noortgate N, De Spiegeleer B. Statin Intake and All-Cause Mortality among Older Nursing Home Residents. Gerontology 2021; 68:407-411. [PMID: 34134106 DOI: 10.1159/000516862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 01/08/2021] [Accepted: 04/27/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Statins are progressively accepted as being associated with reduced mortality. However, few real-world statin studies have been conducted on statin use in older people and especially the most frail, that is, the nursing home residents. OBJECTIVE The aim of this study was to evaluate the impact of statin intake in nursing home residents on all-cause mortality. METHOD This is a cross-sectional study of 1,094 older people residing in 6 nursing homes in Flanders (Belgium) between March 1, 2020 and May 30, 2020. We considered all residents who were taking statins for at least 5 days as statin users. All-cause mortality during the 3 months of data collection was the primary outcome. Propensity score overlap-weighted logistic regression models were applied with age, sex, functional status, diabetes, and cardiac failure/ischemia as potential confounders. RESULTS 185 out of 1,094 residents were on statin therapy (17%). The statin intake was associated with decreased all-cause mortality: 4% absolute risk reduction; adjusted odds ratio 0.50; CI 0.31-0.81, p = 0.005. CONCLUSIONS The statin intake was associated with decreased all-cause mortality in older people residing in nursing homes. More in-depth studies investigating the potential geroprotector effect of statins in this population are needed.
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Affiliation(s)
- Anton De Spiegeleer
- Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium, .,Faculty of Medicine and Health Sciences, Ghent University Hospital, Ghent, Belgium, .,VIB-Center for Inflammation Research, Ghent, Belgium,
| | | | - Antoon Bronselaer
- Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
| | | | - Milan Peelman
- Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
| | | | | | - Guy De Tré
- Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
| | - Luc Belmans
- Faculty of Medicine and Health Sciences, Ghent University Hospital, Ghent, Belgium
| | | | - Mike Sathekge
- Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | | | - Bo Saxberg
- DDO Strategic Services, Oro Valley, Arizona, USA
| | | | | | - Dirk Elewaut
- VIB-Center for Inflammation Research, Ghent, Belgium
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27
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Torrejón-Magallanes J, Morales-Bojórquez E, Arreguín-Sánchez F. Improving the gnomonic approach with the gnomonicM R-package to estimate natural mortality throughout different life stages. PeerJ 2021; 9:e11229. [PMID: 33976973 PMCID: PMC8061571 DOI: 10.7717/peerj.11229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 03/16/2021] [Indexed: 11/29/2022] Open
Abstract
Natural mortality (M) is defined as the rate of loss that occurs in a fish stock due to natural (non-fishing) causes and can be influenced by density-dependent or density-independent factors. Different methods have been used to estimate M, one of these is the gnomonic approach. This method estimates M rates by dividing the life cycle of a species into subunits of time that increase as a constant proportion of the time elapsed from birth up to the initiation of each subdivision. In this study, an improved gnomonic approach is proposed to estimate natural mortality throughout different life stages in marine stocks using the gnomonicM package written in R software. This package was built to require data about (i) the number of gnomonic intervals, (ii) egg stage duration, (iii) longevity, and (iv) fecundity. With this information, it is possible to estimate the duration and natural mortality (Mi) of each gnomonic interval. The gnomonicM package uses a deterministic or stochastic approach, the latter of which assesses variability in M by assuming that the mean lifetime fecundity (MLF) is the main source of uncertainty. Additionally, the gnomonicM package allows the incorporation of auxiliary information related to the observed temporal durations of specific gnomonic intervals, which is useful for calibrating estimates of M vectors. The gnomonicM package, tested via deterministic and stochastic functions, was supported by the reproducibility and verification of the results obtained from different reports, thus guaranteeing its functionality, applicability, and performance in estimating M for different ontogenetic developmental stages. Based on the biological information of Pacific chub mackerel (Scomber japonicus), we presented a new case study to provide a comprehensive guide to data collection to obtain results and explain the details of the application of the gnomonicM package and avoid its misuse. This package could provide an alternative approach for estimating M and provide basic input data for ecological models, allowing the option of using estimates of variable natural mortality across different ages, mainly for life stages affected by fishing. The inputs for the gnomonicM packages are composed of numbers, vectors, or characters depending on whether the deterministic or stochastic approach is used, making the package quick, flexible, and easy to use; this allows users to focus on obtaining and interpreting results rather than the calculation process.
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Affiliation(s)
- Josymar Torrejón-Magallanes
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, La Paz, Baja California Sur, México
| | | | - Francisco Arreguín-Sánchez
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, La Paz, Baja California Sur, México
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28
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Jiang D, Chiu MM, Liu S. Daily Positive Support and Perceived Stress During COVID-19 Outbreak: The Role of Daily Gratitude Within Couples. J Happiness Stud 2021; 23:65-79. [PMID: 33897277 PMCID: PMC8053415 DOI: 10.1007/s10902-021-00387-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/25/2021] [Indexed: 05/25/2023]
Abstract
UNLABELLED Coronavirus disease 2019 (COVID-19) has induced stress and anxiety. According to past studies, positive support within married couples reduces stress during diseases and disasters, but their mechanisms are unclear. To address this gap and help individuals better cope with COVID-19-related psychological distress, this study examined the relationships among daily positive support, daily gratitude, and daily stress within married couples. In this 14-day daily diary study, 54 heterosexually married couples (N = 108) aged 28 to 71 years participated. After reporting their demographic information at the start of the study, they reported their perceived positive support from their partner, daily stress, and feelings of gratitude at the end of each day of the study for 14 consecutive days. Using a multivariate outcome, multilevel cross-classification, we found that daily positive support was negatively associated with daily stress, mediated by daily feelings of gratitude. On a day when a person reported more perceived positive support than others, this person also reported a higher level of feelings of gratitude and a lower level of stress, regardless of age. We found only an actor effect, no partner effect. These findings show how greater daily positive support is linked to greater daily feelings of gratitude, which in turn is linked to less daily stress during an emergent public health crisis. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10902-021-00387-0.
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Affiliation(s)
- Da Jiang
- Department of Special Education and Counselling, The Education University of Hong Kong, 10 Lo Ping Rd, Tai Po, Hong Kong China
| | - Ming Ming Chiu
- Department of Special Education and Counselling, The Education University of Hong Kong, 10 Lo Ping Rd, Tai Po, Hong Kong China
| | - Shuang Liu
- Department of Special Education and Counselling, The Education University of Hong Kong, 10 Lo Ping Rd, Tai Po, Hong Kong China
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29
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Ullah A, Ahmad S, Rahman GU, Alqarni MM, Mahmoud EE. Impact of pangolin bootleg market on the dynamics of COVID-19 model. Results Phys 2021; 23:103913. [PMID: 33623730 PMCID: PMC7892304 DOI: 10.1016/j.rinp.2021.103913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 01/27/2021] [Accepted: 01/28/2021] [Indexed: 06/12/2023]
Abstract
In this paper we consider ant-eating pangolin as a possible source of the novel corona virus (COVID-19) and propose a new mathematical model describing the dynamics of COVID-19 pandemic. Our new model is based on the hypotheses that the pangolin and human populations are divided into measurable partitions and also incorporates pangolin bootleg market or reservoir. First we study the important mathematical properties like existence, boundedness and positivity of solution of the proposed model. After finding the threshold quantity for the underlying model, the possible stationary states are explored. We exploit linearization as well as Lyapanuv function theory to exhibit local stability analysis of the model in terms of the threshold quantity. We then discuss the global stability analyses of the newly introduced model and found conditions for its stability in terms of the basic reproduction number. It is also shown that for certain values of R 0 , our model exhibits a backward bifurcation. Numerical simulations are performed to verify and support our analytical findings.
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Affiliation(s)
- Abd Ullah
- Department of Mathematics, University of Malakand Chakdara, Dir (L), Pakhtunkhwa, Pakistan
| | - Saeed Ahmad
- Department of Mathematics, University of Malakand Chakdara, Dir (L), Pakhtunkhwa, Pakistan
| | - Ghaus Ur Rahman
- Department of Mathematics and Statistics, University of Swat, District Swat, Pakistan
| | - M M Alqarni
- Department of Mathematics, College of Sciences, King Khalid University, Abha 61413, Saudi Arabia
| | - Emad E Mahmoud
- Department of Mathematics and Statistics, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
- Department of Mathematics, Faculty of Science, Sohag University, Sohag 82524, Egypt
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30
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Hoog Antink C, Braczynski AK, Kleerekoper A, Degens H, Ganse B. Longitudinal Master Track and Field Performance Decline Rates Are Lower and Performance Is Better Compared to Athletes Competing Only Once. J Gerontol A Biol Sci Med Sci 2021; 76:1376-1381. [PMID: 33606016 DOI: 10.1093/gerona/glab049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 11/18/2020] [Indexed: 11/14/2022] Open
Abstract
In master athletics research, cross-sectional data are easier to obtain than longitudinal data. While cross-sectional data give the age-related performance decline for a population, longitudinal data show individual trajectories. It is not known whether athletes who repeatedly compete have (a) a better performance and (b) a slower age-related decline in performance than that obtained from cross-sectional data from athletes competing only once. To investigate this, we analyzed 33 254 results of 14 118 male athletes from 8 disciplines in the database of "Swedish Veteran Athletics." For each discipline and for the pooled data of all disciplines, quadratic models of the evolution of performance over time were analyzed by ANCOVA/ANOCOVA using MATLAB. The performance was higher in athletes with 2 or more data points compared to those with only n = 1 (p < .001), with further increases in performance with an increasing number of data points per athlete. The estimated performance decline was lower in people with 2 or more results (sprint, 10 km, jumps; p < .001). In conclusion, we showed that longitudinal data are associated with higher performance and lower performance decline rates.
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Affiliation(s)
- Christoph Hoog Antink
- Medical Information Technology (MedIT), Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Germany.,Biomedical Engineering, TU Darmstadt, Darmstadt, Germany
| | - Anne K Braczynski
- Department of Neurology, RWTH Aachen University Hospital, Germany.,Institut für Physikalische Biologie, Heinrich Heine University Düsseldorf, Germany
| | - Anthony Kleerekoper
- Department of Computing and Mathematics, Faculty of Science and Engineering, Manchester Metropolitan University, UK
| | - Hans Degens
- Research Centre for Musculoskeletal Science & Sports Medicine, Faculty of Science and Engineering, Manchester Metropolitan University, UK.,Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
| | - Bergita Ganse
- Research Centre for Musculoskeletal Science & Sports Medicine, Faculty of Science and Engineering, Manchester Metropolitan University, UK.,Innovative Implant Development, Orthopaedic Trauma Surgery, Saarland University, Homburg, Germany
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31
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Palliyaguru DL, Minor RK, Mitchell SJ, Palacios HH, Licata JJ, Ward TM, Abulwerdi G, Elliott P, Westphal C, Ellis JL, Sinclair DA, Price NL, Bernier M, de Cabo R. Combining a High Dose of Metformin With the SIRT1 Activator, SRT1720, Reduces Life Span in Aged Mice Fed a High-Fat Diet. J Gerontol A Biol Sci Med Sci 2021; 75:2037-2041. [PMID: 32556267 DOI: 10.1093/gerona/glaa148] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 03/13/2020] [Indexed: 12/14/2022] Open
Abstract
SRT1720, a sirtuin1-activator, and metformin (MET), an antidiabetic drug, confer health and life-span benefits when administered individually. It is unclear whether combination of the two compounds could lead to additional benefits. Groups of 56-week-old C57BL/6J male mice were fed a high-fat diet (HFD) alone or supplemented with either SRT1720 (2 g/kg food), a high dose of MET (1% wt/wt food), or a combination of both. Animals were monitored for survival, body weight, food consumption, body composition, and rotarod performance. Mice treated with MET alone did not have improved longevity, and life span was dramatically reduced by combination of MET with SRT1720. Although all groups of animals were consuming similar amounts of food, mice on MET or MET + SRT1720 showed a sharp reduction in body weight. SRT1720 + MET mice also had lower percent body fat combined with better performance on the rotarod compared to controls. These data suggest that co-treatment of SRT1720 with MET is detrimental to survival at the doses used and, therefore, risk-benefits of combining life-span-extending drugs especially in older populations needs to be systematically evaluated.
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Affiliation(s)
- Dushani L Palliyaguru
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - Robin K Minor
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - Sarah J Mitchell
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - Hector H Palacios
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - Jordan J Licata
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - Theresa M Ward
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - Gelareh Abulwerdi
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - Peter Elliott
- Sirtris Pharmaceuticals, a GSK Company, Cambridge, Massachusetts
| | | | - James L Ellis
- Sirtris Pharmaceuticals, a GSK Company, Cambridge, Massachusetts
| | - David A Sinclair
- Glenn Labs for the Biological Mechanisms of Aging, Harvard Medical School, Boston, Massachusetts
| | - Nathan L Price
- Integrative Cell Signaling and Neurobiology of Metabolism Program, Department of Comparative Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Michel Bernier
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - Rafael de Cabo
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
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32
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Wongchum N, Dechakhamphu A. Ethanol extract of Cassia siamea L. increases life span in Drosophila melanogaster. Biochem Biophys Rep 2021; 25:100925. [PMID: 33553687 PMCID: PMC7844133 DOI: 10.1016/j.bbrep.2021.100925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 01/09/2021] [Accepted: 01/19/2021] [Indexed: 11/18/2022] Open
Abstract
The stem of Cassia siamea L. (Fabaceae) has been used in traditional Thai medicine as a longevity remedy. The objective of this study was to investigate the effect of ethanolic stem extract of C. siamea (CSE) on the life span of Drosophila melanogaster. The results showed that a diet containing 10 mg/mL CSE could significantly extend the mean life span of D. melanogaster by 14% compared with the control diet (P < 0.01). The maximum life span was 74, 78, and 84 days in control, CSE (5 mg/mL) and CSE (10 mg/mL) groups, respectively. Supplementation of CSE at 10 mg/mL also significantly increases the activity of superoxide dismutase (SOD) and catalase (CAT) at days 25 and 40 compared with the control diet. Treatment of CSE at 5 and 10 mg/mL significantly increased the climbing ability of D. melanogaster both on days 25 and 40 compared with the control flies. Paraquat and H2O2 challenge test showed that flies fed with CSE at 10 mg/mL had a longer survival time than the control flies (P < 0.01). This study provides supportive evidence that supplementation with CSE prolonged life span and reduced oxidative stress in D. melanogaster. Supplementation with Cassia siamea extract extended the lifespan and improved the fly's locomotor activity C. siamea extract supplementation increased SOD and CAT activities in the fly. C. siamea extract supplementation improved survival after exposure to free radicals in the fly.
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Affiliation(s)
- Nattapong Wongchum
- Biology Program, Faculty of Science, Ubon Ratchathani Rajabhat University, Ubonratchathani, 34000, Thailand
| | - Ananya Dechakhamphu
- Thai Traditional Medicine Program, Faculty of Thai Traditional and Alternative Medicine, Ubon Ratchathani Rajabhat University, Ubonratchathani, 34000, Thailand
- Corresponding author.
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33
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Zhang L, Yi X, Wang S, Liang P, Zhou H, Fu J, Jia Q, Gao J, Lv Y, Han S. Construction of graphene quantum dots-decorated EGFR cell membrane chromatography for screening active components from Peucedanum praeruptorum Dunn. Anal Bioanal Chem 2021; 413:1917-1927. [PMID: 33506335 DOI: 10.1007/s00216-021-03161-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/08/2020] [Accepted: 01/06/2021] [Indexed: 10/22/2022]
Abstract
A novel stability-enhanced graphene quantum dot (GQD)-decorated epidermal growth factor receptor (EGFR) cell membrane chromatography was constructed to study the potential application of GQDs in bioaffinity chromatography, and to screen active components acting on EGFR from traditional Chinese medicine (TCM). The carboxyl groups on the surface of GQDs reacted with the amino groups of the amino-silica gel (SiO2-NH2) to form a covalent bond, thereby preparing the GQD-decorated silica gel (SiO2-GQDs). The EGFR cell membrane was further immobilized on the SiO2-GQDs through the same covalent binding method to obtain the GQD-decorated cell membrane stationary phase (SiO2-GQDs-CMSP). In this way, the cell membrane was firmly immobilized on the decorated silica carrier. The life span and stability of the GQD-decorated cell membrane chromatographic (SiO2-GQDs-CMC) column were both enhanced, and the optimal immobilization conditions of the EGFR cell membrane were also determined. This model was then verified by establishing a SiO2-GQDs-CMC online liquid chromatography-ion trap-time-of-flight (LC-IT-TOF) system to screen possible active components in Peucedanum praeruptorum Dunn. As a result, praeruptorin B (Pra-B) was screened out, and its inhibitory effect against EGFR cell growth was evaluated by the cell counting kit-8 (CCK-8) assay. Molecular docking assay was also conducted to further estimate the interaction between Pra-B and EGFR. Overall, this research indicated that GQDs may be a promising nanomaterial to be used in prolonging the life span of the CMC column, and Pra-B could be a potential EGFR inhibitor so as to treat cancer.
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Affiliation(s)
- Liyang Zhang
- School of Pharmacy, Xi'an Jiaotong University, 76# Yanta West Road, Xi'an, 710061, Shaanxi, China.,Institute of Pharmaceutical Science and Technology, Western China Science & Technology Innovation Harbour, Xi'an, 710115, Shaanxi, China
| | - Xinyao Yi
- School of Basic Medical Science, Xi'an Jiaotong University, 76# Yanta West Road, Xi'an, 710061, Shaanxi, China
| | - Saisai Wang
- School of Pharmacy, Xi'an Jiaotong University, 76# Yanta West Road, Xi'an, 710061, Shaanxi, China.,Institute of Pharmaceutical Science and Technology, Western China Science & Technology Innovation Harbour, Xi'an, 710115, Shaanxi, China
| | - Peida Liang
- School of Pharmacy, Xi'an Jiaotong University, 76# Yanta West Road, Xi'an, 710061, Shaanxi, China.,Institute of Pharmaceutical Science and Technology, Western China Science & Technology Innovation Harbour, Xi'an, 710115, Shaanxi, China
| | - Huaxin Zhou
- School of Pharmacy, Xi'an Jiaotong University, 76# Yanta West Road, Xi'an, 710061, Shaanxi, China.,Institute of Pharmaceutical Science and Technology, Western China Science & Technology Innovation Harbour, Xi'an, 710115, Shaanxi, China
| | - Jia Fu
- School of Pharmacy, Xi'an Jiaotong University, 76# Yanta West Road, Xi'an, 710061, Shaanxi, China.,Institute of Pharmaceutical Science and Technology, Western China Science & Technology Innovation Harbour, Xi'an, 710115, Shaanxi, China
| | - Qianqian Jia
- School of Pharmacy, Xi'an Jiaotong University, 76# Yanta West Road, Xi'an, 710061, Shaanxi, China.,Institute of Pharmaceutical Science and Technology, Western China Science & Technology Innovation Harbour, Xi'an, 710115, Shaanxi, China
| | - Jiapan Gao
- School of Pharmacy, Xi'an Jiaotong University, 76# Yanta West Road, Xi'an, 710061, Shaanxi, China.,Institute of Pharmaceutical Science and Technology, Western China Science & Technology Innovation Harbour, Xi'an, 710115, Shaanxi, China
| | - Yanni Lv
- School of Pharmacy, Xi'an Jiaotong University, 76# Yanta West Road, Xi'an, 710061, Shaanxi, China.,Institute of Pharmaceutical Science and Technology, Western China Science & Technology Innovation Harbour, Xi'an, 710115, Shaanxi, China
| | - Shengli Han
- School of Pharmacy, Xi'an Jiaotong University, 76# Yanta West Road, Xi'an, 710061, Shaanxi, China. .,Institute of Pharmaceutical Science and Technology, Western China Science & Technology Innovation Harbour, Xi'an, 710115, Shaanxi, China.
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Brandts L, van Tilburg TG, Bosma H, Huisman M, van den Brandt PA. Loneliness in Later Life and Reaching Longevity: Findings From the Longitudinal Aging Study Amsterdam. J Gerontol B Psychol Sci Soc Sci 2021; 76:415-424. [PMID: 32880641 PMCID: PMC7813181 DOI: 10.1093/geronb/gbaa145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Indexed: 11/14/2022] Open
Abstract
Objectives There is an increasing research interest in factors that characterize those who reach exceptionally old ages. Although loneliness is often associated with an increased risk for premature mortality, its relationship with reaching longevity is still unclear. We aimed to quantify the association between (social/emotional) loneliness and the likelihood of reaching the age of 90 years in men and women separately. Methods For these analyses, data from the Longitudinal Aging Study Amsterdam (LASA) were used. Loneliness, social loneliness, and emotional loneliness were assessed at baseline using the 11-item De Jong-Gierveld scale in 1992–1993 (at age 64–85 years). Follow-up for vital status information until the age of 90 years was 99.5% completed. Multivariable-adjusted Cox regression analyses with a fixed follow-up time were based on 1,032 men and 1,078 women to calculate risk ratios (RR) of reaching 90 years. Results No significant associations were observed between loneliness and reaching 90 years in both men (RR, 0.90; 95% confidence interval [CI], 0.70–1.14) and women (RR, 0.98; 95% CI, 0.83–1.14). Social loneliness was significantly associated with a reduced chance of reaching 90 years in women (RR, 0.82; 95% CI, 0.67–0.99). Discussion The current analyses did not show support for the existence of a meaningful effect of loneliness on reaching longevity in both sexes. When investigating specific dimensions of loneliness, we observed that reporting social loneliness was associated with reaching 90 years in women. This indicates that, for women, a large and diverse personal network at an older age could increase the probability of reaching longevity. However, replication of our findings in other cohorts is needed.
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Affiliation(s)
- Lloyd Brandts
- Department of Epidemiology, GROW - School for Oncology and Developmental Biology, Maastricht University Medical Centre, the Netherlands
| | | | - Hans Bosma
- Department of Social Medicine, CAPHRI - School for Public Health and Primary Care, Maastricht, the Netherlands
| | - Martijn Huisman
- Department of Sociology, Vrije Universiteit, Amsterdam, the Netherlands.,Department of Epidemiology and Biostatistics, Amsterdam Public Health Research Institute, VU University Medical Center, the Netherlands
| | - Piet A van den Brandt
- Department of Epidemiology, GROW - School for Oncology and Developmental Biology, Maastricht University Medical Centre, the Netherlands.,Department of Epidemiology, CAPHRI - School for Public Health and Primary Care, Maastricht, the Netherlands
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Kumar Patel A, Rajput S. Thermodynamic life cycle assessment of humans with considering food habits and energy intake. Saudi J Biol Sci 2021; 28:531-540. [PMID: 33424336 PMCID: PMC7785455 DOI: 10.1016/j.sjbs.2020.10.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/17/2020] [Accepted: 10/19/2020] [Indexed: 12/03/2022] Open
Abstract
All biotic species, including humans, requires energy for their survival and obtained from the process of metabolism. Present work deals with the thermodynamic analysis of the metabolic process of humans and establishes the relation for entropy generation. Further, this entropy generation is linked with the thermodynamics life cycle assessment of humans. Data used in this work is provided by the National sample survey office (NSSO), Government of India. Entropy generation is determined on the bases of per kg of carbohydrate, palmitic acid and 20 amino acids. Finally, the life span of humans has been determined on the grounds of the entropy generation. Entropy generated by Haryana people is maximum in all states, and Tamilnadu people have the minimum among all the states. Total entropy production for Haryana is 23.59 kJ/K-kg-food and for Tamilnadu 19.71 kJ/K-kg-food. People living in Haryana has a life span of 66 years, and Tamilnadu people have a life span of 79 years. The life span for other states ranging in 66-79 years. Variation of ±3% is recorded in the life span of people when compared with the NITI Aayog report. There is a minor difference of 1.22 years in case of life expectancy of Kerla when compared to the NITI Aayog report. In current research work effect of water and air, inhalation is not considered. So one can think these parameters and analyze the variation of the result.
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Affiliation(s)
| | - S.P.S. Rajput
- Department of Mechanical Engineering MANIT, Bhopal, India
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36
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Bowen CE, Spuling SM, Kornadt AE, Wiest M. Young people feel wise and older people feel energetic: comparing age stereotypes and self-evaluations across adulthood. Eur J Ageing 2020; 17:435-444. [PMID: 33380997 PMCID: PMC7752929 DOI: 10.1007/s10433-019-00548-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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] [Indexed: 10/25/2022] Open
Abstract
We use questionnaire data from the MIDUS study (N = 6325 and a subsample n = 2120) to examine the extent to which people in their late 20s, late 40s and late 60s think that positive characteristics apply to themselves, their age peers and other age groups. Results based on factor analysis confirmed the existence of age stereotypes, such that one constellation of characteristics (wise, caring, calm, knowledgeable, generative; "wise") was seen as more descriptive of older adults, while another constellation of characteristics (energetic, healthy, willing to learn; "energetic") was seen as more descriptive of younger adults. Self-evaluations were, however, highly positive and largely independent of age. As a group, younger adults saw themselves as being as "energetic" but "wiser" than their age peers, while older adults saw themselves as being more "energetic" but less "wise" than their age peers. In sum, the results suggest that self-views are relatively independent of existing age stereotypes but also indicate that the "better-than-average effect" depends on age and whether the considered characteristics represent a relative strength or weakness of one's own age group. The results also indicate that, at the aggregate level, older adults' tendency to use stereotypes about their age group's weaknesses as a frame of reference for making flattering self-evaluations seems to outweigh the effects of stereotype internalization.
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Affiliation(s)
| | - Svenja M. Spuling
- German Centre of Gerontology (DZA), Manfred-von-Richthofen-Str. 2, 12101 Berlin, Germany
| | - Anna E. Kornadt
- Fakultät für Psychologie und Sportwissenschaft, Differentielle Psychologie und Psychologische Diagnostik, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Maja Wiest
- Free University Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany
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Utyro O, Perła-Kaján J, Kubalska J, Graban A, Jakubowski H. Telomere length and mtDNA copy number in human cystathionine β-synthase deficiency. Free Radic Biol Med 2020; 160:219-226. [PMID: 32768567 DOI: 10.1016/j.freeradbiomed.2020.07.036] [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: 06/18/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 10/23/2022]
Abstract
Telomere shortening and mitochondrial DNA (mtDNA) copy number are associated with human disease and a reduced life span. Cystathionine β-synthase (CBS) is a housekeeping enzyme that catalyzes the first step in metabolic conversion of homocysteine (Hcy) to cysteine. Mutations in the CBS gene cause CBS deficiency, a rare recessive metabolic disease, manifested by severe hyperhomocysteinemia (HHcy) and thromboembolism, which ultimately reduces the life span. However, it was not known whether telomere shortening or mtDNA is involved in the pathology of human CBS deficiency. We quantified leukocyte telomere length (TL), mtDNA copy number, and plasma Hcy levels in CBS-/- patients (n = 23) and in sex- and age-matched unaffected CBS+/+ control individuals (n = 28) 0.08-57 years old. We found that TL was significantly increased in severely HHcy CBS-/- female patients but unaffected in severely HHcy CBS-/- male patients, relative to the corresponding CBS+/+ controls who had normal plasma Hcy levels. In multiple regression analysis TL was associated with CBS genotype in women but not in men. MtDNA copy number was not significantly affected by the CBS-/- genotype. Taken together, these findings identify the CBS gene as a new locus in human DNA that affects TL in women and illustrate a concept that a housekeeping metabolic gene can be involved in telomere biology. Our findings suggest that neither telomere shortening nor reduced mtDNA copy number contribute to the reduced life span in CBS-/- patients.
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Affiliation(s)
- Olga Utyro
- Department of Biochemistry and Biotechnology, Poznań University of Life Sciences, 60-632, Poznań, Poland; Institute of Bioorganic Chemistry, Polish Academy of Sciences, 61-704, Poznań, Poland
| | - Joanna Perła-Kaján
- Department of Biochemistry and Biotechnology, Poznań University of Life Sciences, 60-632, Poznań, Poland
| | - Jolanta Kubalska
- Department of Genetics, Institute of Psychiatry and Neurology, 02-957, Warsaw, Poland
| | - Ałła Graban
- Department of Genetics, Institute of Psychiatry and Neurology, 02-957, Warsaw, Poland
| | - Hieronim Jakubowski
- Department of Biochemistry and Biotechnology, Poznań University of Life Sciences, 60-632, Poznań, Poland; Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers University-New Jersey Medical School, International Center for Public Health, Newark, NJ, 07103, USA.
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38
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Kulminski AM, Loika Y, Nazarian A, Culminskaya I. Quantitative and Qualitative Role of Antagonistic Heterogeneity in Genetics of Blood Lipids. J Gerontol A Biol Sci Med Sci 2020; 75:1811-1819. [PMID: 31566214 DOI: 10.1093/gerona/glz225] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 06/14/2019] [Indexed: 12/18/2022] Open
Abstract
Prevailing strategies in genome-wide association studies (GWAS) mostly rely on principles of medical genetics emphasizing one gene, one function, one phenotype concept. Here, we performed GWAS of blood lipids leveraging a new systemic concept emphasizing complexity of genetic predisposition to such phenotypes. We focused on total cholesterol, low- and high-density lipoprotein cholesterols, and triglycerides available for 29,902 individuals of European ancestry from seven independent studies, men and women combined. To implement the new concept, we leveraged the inherent heterogeneity in genetic predisposition to such complex phenotypes and emphasized a new counter intuitive phenomenon of antagonistic genetic heterogeneity, which is characterized by misalignment of the directions of genetic effects and the phenotype correlation. This analysis identified 37 loci associated with blood lipids but only one locus, FBXO33, was not reported in previous top GWAS. We, however, found strong effect of antagonistic heterogeneity that leaded to profound (quantitative and qualitative) changes in the associations with blood lipids in most, 25 of 37 or 68%, loci. These changes suggested new roles for some genes, which functions were considered as well established such as GCKR, SIK3 (APOA1 locus), LIPC, LIPG, among the others. The antagonistic heterogeneity highlighted a new class of genetic associations emphasizing beneficial and adverse trade-offs in predisposition to lipids. Our results argue that rigorous analyses dissecting heterogeneity in genetic predisposition to complex traits such as lipids beyond those implemented in current GWAS are required to facilitate translation of genetic discoveries into health care.
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Affiliation(s)
- Alexander M Kulminski
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, North Carolina
| | - Yury Loika
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, North Carolina
| | - Alireza Nazarian
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, North Carolina
| | - Irina Culminskaya
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, North Carolina
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Abstract
Sleep deprivation has been shown to negatively impact health outcomes, leading to decreased immune responses, memory loss, increased activity of stress and inflammatory pathways, weight gain, and even behavioral changes. These observations suggest that sleep deprivation substantially interferes with important physiological functions, including metabolic pathways of energy utilization. Many of those phenotypes are correlated with age, suggesting that disrupted sleep may interfere with the aging process. However, little is known about how sleep disruption affects aging and longevity. Here, we investigate this relationship using eight representative fruit fly lines from the Sleep Inbred Panel (SIP). The SIP consists of 39 inbred lines that display extreme short- and long-sleep patterns, and constitutes a crucial Drosophila community resource for investigating the mechanisms of sleep regulation. Our data show that flies with short-sleep periods have ∼16% longer life span, as well as reduced aging rate, compared to flies with long-sleep. In contrast, disrupting normal circadian rhythm reduces fly longevity. Short-sleep SIP flies moreover show slight metabolic differences to long-sleep lines, and to flies with disrupted circadian rhythm. These data suggest that the inbred SIP lines engage sleep mechanisms that are distinct from the circadian clock system.
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Affiliation(s)
- Jacqueline B Thompson
- Department of Chemistry, California State University, Sacramento, 6000 J Street, Sacramento, CA 95819, USA
| | - Oanh Oanh Su
- Department of Chemistry, California State University, Sacramento, 6000 J Street, Sacramento, CA 95819, USA
| | - Nou Yang
- Department of Chemistry, California State University, Sacramento, 6000 J Street, Sacramento, CA 95819, USA
| | - Johannes H Bauer
- Department of Chemistry, California State University, Sacramento, 6000 J Street, Sacramento, CA 95819, USA
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40
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de Souza FC. Relationships between best-practice and greatest possible life expectancies. Eur J Ageing 2020; 17:331-339. [PMID: 32904848 DOI: 10.1007/s10433-019-00549-3] [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] [Indexed: 11/26/2022] Open
Abstract
This paper investigated the relationships between the best-practice and the greatest possible life expectancies by means of gaps, lags and decomposition analyses, from 1950-1955 up to 2095-2100. The data were gathered from the United Nations' World Population Prospects (2017), containing abridged period life tables, for both sexes combined, for 201 countries or areas, which allowed the identification of low-mortality regions that are sometimes omitted in previous studies. It was observed that both best-practice and greatest possible life expectancies rose and are expected to continue to rise linearly in a very similar way. Moreover, the average gap between the best-practice and the greatest possible life expectancies was of about 1.14 years and the average lag was 7.59 years. Finally, it was found that major contributions to the gap are typically due to age groups beyond 65 years.
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Affiliation(s)
- Filipe Costa de Souza
- Departamento de Ciências Contábeis e Atuariais, Centro de Ciências Sociais Aplicadas, Universidade Federal de Pernambuco, Cidade Universitária, Avenida dos Funcionários, S/N, Recife, PE CEP 50670-901 Brazil
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41
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Watada M, Hayashi Y, Watanabe K, Mizutani S, Mure A, Hattori Y, Uemura T. Divergence of Drosophila species: Longevity and reproduction under different nutrient balances. Genes Cells 2020; 25:626-636. [PMID: 32594638 DOI: 10.1111/gtc.12798] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 05/22/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 02/04/2023]
Abstract
How nutrition impacts growth, reproduction and longevity is complex because relationships between these life events are difficult to disentangle. As a first step in sorting out these processes, we carried out a comparative analysis of related species of Drosophila with distinct feeding habits. In particular, we examined life spans and egg laying of two generalists and three specialists on diets with distinct protein-to-carbohydrate ratios. In contrast to the generalist D. melanogaster, adult males of two specialists, D. sechellia and D. elegans, lived longer on a protein-rich diet. These results and our previous studies collectively show that the diet to which larvae of each specialist species have adapted ensures a longer life span of adult males of that same species. We also found a species-specific sexual dimorphism of life span in the above two specialists regardless of the diets, which was in sharp contrast to D. melanogaster. In D. melanogaster, males lived longer than females, whereas females of D. sechellia and D. elegans were longer-lived than males, and those specialist females were exceedingly low in egg production, relative to the other species. We discuss our findings from perspectives of mechanisms, including a possible contribution of egg production to life span.
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Affiliation(s)
- Masayoshi Watada
- Graduate School of Science and Engineering, Ehime University, Matsuyama, Japan
| | - Yusaku Hayashi
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Kaori Watanabe
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Shoko Mizutani
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Ayumi Mure
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Yukako Hattori
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Tadashi Uemura
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan.,Research Center for Dynamic Living Systems, Kyoto University, Kyoto, Japan.,AMED-CREST, AMED, Tokyo, Japan
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Curtsinger JW. Terminal life history: late-life fecundity and survival in experimental populations of Drosophila melanogaster. Biogerontology 2020; 21:721-730. [PMID: 32638261 DOI: 10.1007/s10522-020-09889-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 04/30/2020] [Accepted: 06/23/2020] [Indexed: 11/24/2022]
Abstract
There are two life history landmarks that can be used to define the terminal period in individual Drosophila melanogaster females: the cessation of daily oviposition, which defines the start of the retired stage, and final oviposition, which defines the start of post-ovipository survival. The terminal period is a substantial component of D. melanogaster life history. Analysis of published data on the daily fecundity and survival of 3971 individually maintained, mated female flies reveals that the terminal period is far more variable within populations than other life history components, including total adult life span. It has been reported that there is a negative correlation between fecundity and duration of the terminal state in recently collected wild stocks. Here I show that the negative correlation occurs in multiple inbred and outbred lab-adapted populations as well. In terms of proportion of adult life, lower fecundity flies spend on average twice as much time in the terminal stage as higher fecundity flies from the same population. Both high and low fecundity flies experience end-of-life plateaus in mortality, with the former exhibiting higher plateau levels. The negative correlation between fecundity and terminal survival is of sufficient magnitude to create heterogeneity among the oldest old: the final 10% of survivors are predominately flies with a history of high fecundity, but about one in five is a low fecundity fly with long terminal stage.
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Affiliation(s)
- James W Curtsinger
- Department of Ecology, Evolution, & Behavior, University of Minnesota - Twin Cities, 1987 Upper Buford Circle, St. Paul, MN, 55108, USA.
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43
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Camilleri-Carter TL, Dowling DK, L Robker R, Piper MDW. Transgenerational Obesity and Healthy Aging in Drosophila. J Gerontol A Biol Sci Med Sci 2020; 74:1582-1589. [PMID: 31231757 DOI: 10.1093/gerona/glz154] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 01/02/2019] [Indexed: 12/11/2022] Open
Abstract
Substantial evidence suggests that individuals born to overweight and obese parents suffer detrimental health consequences that dramatically decrease healthy aging. The number of obese individuals worldwide now exceeds the number of under- and malnourished individuals. This obesity epidemic is responsible for approximately 4 million deaths worldwide each year, and predisposes sufferers to a range of age-related diseases such as cardiovascular diseases, and metabolic syndrome. Additionally, obesity is associated with an accelerated onset of age-related ailments, such as cancers and inflammation. The importance of dietary interventions to reduce the incidence of obesity is magnified by emerging evidence that parental physiology can predispose future generations to poor health outcomes. Characterizing and understanding these effects, and how they are mediated, is important if we are to continue to drive improvements to population health. In this article, we synthesize evidence for the intergenerational and transgenerational phenotypic effects of parental obesity. We concentrate on how the fruit fly Drosophila melanogaster can be used as a model to study these effects. Fruit flies are highly tractable, and their conserved nutrient signaling and metabolic pathways make them an ideal model for studying nutritional effects on metabolic, reproductive, and aging phenotypes.
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Affiliation(s)
| | - Damian K Dowling
- School of Biological Sciences, Monash University, Clayton, Victoria, Australia
| | - Rebecca L Robker
- School of Paediatrics and Reproductive Health, Robinson Research Institute, The University of Adelaide, Australia.,School of Biomedical Sciences, Monash University, Clayton, Victoria, Australia
| | - Matthew D W Piper
- School of Biological Sciences, Monash University, Clayton, Victoria, Australia
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44
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Bajracharya R, Bustamante S, O Ballard JW. Stearic Acid Supplementation in High Protein to Carbohydrate (P:C) Ratio Diet Improves Physiological and Mitochondrial Functions of Drosophila melanogaster parkin Null Mutants. J Gerontol A Biol Sci Med Sci 2020; 74:1564-1572. [PMID: 29236963 DOI: 10.1093/gerona/glx246] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 07/17/2017] [Accepted: 12/11/2017] [Indexed: 12/31/2022] Open
Abstract
Optimizing dietary macronutrients benefits the prevention and management of many human diseases but there is conflicting dietary advice for Parkinson's disease (PD), and no single strategy is universally recommended. Recently, it was shown that dietary stearic acid (C18:0) improves survival and mitochondrial functions in the parkin null Drosophila model of PD. Here, we incorporate stearic acid into high protein and high carbohydrate diets and study survival, climbing ability, mitochondrial membrane potential, respiration, basal reactive oxygen species, and conduct lipidomics assays. We observed that parkin null flies showed improvement in all assays tested when stearic acid was added to the high protein diet but not to the high carbohydrate diet. When lipid proportion was examined, we observed higher levels in flies fed the high protein diet with stearic acid diet and the high carbohydrate diet. Unexpectedly, free levels of fatty acids exhibited opposite trend. Combined, these data suggest that dietary Protein: Carbohydrate ratio and stearic acid influences levels of bound fatty acids. The mechanisms that influence free and bound fatty-acid levels remain to be explored, but one possible explanation is that breakdown products can bind to membranes and improve the mitochondrial functions of parkin null flies.
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Affiliation(s)
- Rijan Bajracharya
- School of Biotechnology and Biomolecular Sciences, Sydney, Australia
| | - Sonia Bustamante
- Bioanalytical Mass Spectrometry Facility, Mark Wainwright Analytical Center, University of New South Wales, Sydney, Australia
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Tumwesigye NM, Mutungi G, Bahendeka S, Wesonga R, Katureebe A, Biribawa C, Guwatudde D. Alcohol consumption, hypertension and obesity: Relationship patterns along different age groups in Uganda. Prev Med Rep 2020; 19:101141. [PMID: 32685360 PMCID: PMC7358719 DOI: 10.1016/j.pmedr.2020.101141] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 06/02/2020] [Accepted: 06/04/2020] [Indexed: 12/29/2022] Open
Abstract
Hypertension prevalence ratios don’t rise with age groups among frequent drinkers. Alcohol consumption pattern partly modifies the age-hypertension relationship. Alcohol consumption pattern does not modify obesity-age relationship.
The prevalence of non-communicable diseases including hypertension and obesity is rising and alcohol consumption is a predisposing factor. This study explored the effect of alcohol consumption patterns on the hypertension-age group and obesity-age group relationships. The data were extracted from the 2014 National NCD Survey of adults aged 18–69 years. Hypertension was defined as a condition of having systolic blood pressure ≥140 mmHg or diastolic blood pressure ≥90 mmHg while obesity was defined as having a body mass index ≥30 kg/m2. Frequent alcohol consumption was measured as alcohol use ≥3 times a week. Multivariable log binomial regression analysis was used to assess independent relationship between the outcomes and alcohol consumption. The prevalences of hypertension, frequent alcohol consumption and obesity increased across age groups but were divergent towards last age group. Hypertension prevalence ratios were higher with higher age groups among moderate and nondrinkers but not among frequent drinkers. Alcohol drinking pattern modified the age hypertension relationship in a model with ungrouped age. The drinking pattern did not modify obesity-age relationship. Alcohol consumption pattern appeared to modify the hypertension-age group relationship. However, more research is needed to explain why prevalence ratios are higher with higher age groups among moderate drinkers and abstainers while they stagnate among the frequent drinkers. There was no evidence to show the effect of alcohol consumption on obesity-age group relationship.
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Affiliation(s)
| | - Gerald Mutungi
- Control of Non-communicable Diseases Desk, Ministry of Health, Kampala, Uganda
| | - Silver Bahendeka
- Department of Internal Medicine St. Francis Hospital Nsambya, Kampala, Uganda
| | - Ronald Wesonga
- School of Statistics and Planning, Makerere University, Kampala, Uganda
| | - Agaba Katureebe
- Department of Epidemiology and Biostatistics, Makerere University School of Public Health, Uganda
| | - Claire Biribawa
- Department of Epidemiology and Biostatistics, Makerere University School of Public Health, Uganda
| | - David Guwatudde
- Department of Epidemiology and Biostatistics, Makerere University School of Public Health, Uganda
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Klusmann V, Sproesser G, Wolff JK, Renner B. Positive Self-perceptions of Aging Promote Healthy Eating Behavior Across the Life Span via Social-Cognitive Processes. J Gerontol B Psychol Sci Soc Sci 2020; 74:735-744. [PMID: 29186555 DOI: 10.1093/geronb/gbx139] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [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: 05/18/2017] [Accepted: 10/19/2017] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES Negative self-perceptions of aging (SPA) have been shown to result in lower levels of preventive behavior, health, and longevity. This study focuses on the understudied SPA effects on healthy eating across the life span. Moreover, it aims to provide longitudinal evidence of the psychological mechanisms behind this relationship. METHOD We investigated whether SPA (T1) can predict changes in eating behavior (T3) over 1 year in 1,321 participants (T1), aged 18-92 years. The explanatory role of social-cognitive processes (T1, T2) was tested via a two-step mediation analysis with multigroup modeling for different age and education levels. RESULTS Baseline positive SPA predicted more healthy eating at T3 (b = 0.68, SE = 0.24, p = .01), controlling for baseline eating (T1), age, education, gender, BMI, and illnesses. Self-efficacy (T1) and intention to eat healthily (T2) serially mediated this effect, indirect effect: b = 0.04, p = .02, 95% CI (0.02, 0.08). SPA had stronger effects in older and less educated participants. DISCUSSION This study provides important insights into the mechanisms behind positive SPA fueling successful health behavior change dynamics. Fostering more positive SPA through interventions might be especially important for vulnerable groups. Addressing SPA already in younger ages might help establish health-promoting life-span dynamics.
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Affiliation(s)
| | | | - Julia K Wolff
- Institute of Psychogerontology, Friedrich-Alexander-University Erlangen-Nuremberg, Germany.,IGES Institute, Berlin, Germany
| | - Britta Renner
- Department of Psychology, University of Konstanz, Germany
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Karlsson IK, Lehto K, Gatz M, Reynolds CA, Dahl Aslan AK. Age-dependent effects of body mass index across the adult life span on the risk of dementia: a cohort study with a genetic approach. BMC Med 2020; 18:131. [PMID: 32513281 PMCID: PMC7282125 DOI: 10.1186/s12916-020-01600-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 04/20/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND While a high body mass index (BMI) in midlife is associated with higher risk of dementia, high BMI in late-life may be associated with lower risk. This study combined genetic designs with longitudinal data to achieve a better understanding of this paradox. METHODS We used longitudinal data from 22,156 individuals in the Swedish Twin Registry (STR) and 25,698 from the Health and Retirement Study (HRS). The STR sample had information about BMI from early adulthood through late-life, and the HRS sample from age 50 through late-life. Survival analysis was applied to investigate age-specific associations between BMI and dementia risk. To examine if the associations are influenced by genetic susceptibility to higher BMI, an interaction between BMI and a polygenic score for BMI (PGSBMI) was included in the models and results stratified into those with genetic predisposition to low, medium, and higher BMI. In the STR, co-twin control models were applied to adjust for familial factors beyond those captured by the PGSBMI. RESULTS At age 35-49, 5 units higher BMI was associated with 15% (95% CI 7-24%) higher risk of dementia in the STR. There was a significant interaction (p = 0.04) between BMI and the PGSBMI, and the association present only among those with genetic predisposition to low BMI (HR 1.38, 95% CI 1.08-1.78). Co-twin control analyses indicated genetic influences. After age 80, 5 units higher BMI was associated with 10-11% lower risk of dementia in both samples. There was a significant interaction between late-life BMI and the PGSBMI in the STR (p = 0.01), but not the HRS, with the inverse association present only among those with a high PGSBMI (HR 0.70, 95% CI 0.52-0.94). No genetic influences were evident from co-twin control models of late-life BMI. CONCLUSIONS Not only does the association between BMI and dementia differ depending on age at BMI measurement, but also the effect of genetic influences. In STR, the associations were only present among those with a BMI in opposite direction of their genetic predisposition, indicating that the association between BMI and dementia across the life course might be driven by environmental factors and hence likely modifiable.
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Affiliation(s)
- Ida K Karlsson
- Institute of Gerontology and Aging Research Network - Jönköping (ARN-J), School of Health and Welfare, Jönköping University, Box 1026, SE-551 11, Jönköping, Sweden. .,Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
| | - Kelli Lehto
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,National Institute for Health Development, Tallinn, Estonia
| | - Margaret Gatz
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Department of Psychology, University of Southern California, Los Angeles, CA, USA
| | | | - Anna K Dahl Aslan
- Institute of Gerontology and Aging Research Network - Jönköping (ARN-J), School of Health and Welfare, Jönköping University, Box 1026, SE-551 11, Jönköping, Sweden.,Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
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Loika Y, Irincheeva I, Culminskaya I, Nazarian A, Kulminski AM. Polygenic risk scores: pleiotropy and the effect of environment. GeroScience 2020; 42:1635-1647. [PMID: 32488673 DOI: 10.1007/s11357-020-00203-2] [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: 01/08/2020] [Accepted: 05/08/2020] [Indexed: 10/24/2022] Open
Abstract
Polygenic risk scores (PRSs) discriminate trait risks better than single genetic markers because they aggregate the effects of risk alleles from multiple genetic loci. Constructing pleiotropic PRSs and understanding heterogeneity, and the replication of PRS-trait associations can strengthen its applications. By using variational Bayesian multivariate high-dimensional regression, we constructed pleiotropic PRSs jointly associated with body mass index, systolic and diastolic blood pressure, total and high-density lipoprotein cholesterol in a sample of 18,108 Caucasians from three independent cohorts. We found that dissecting heterogeneity associated with birth year, which is a proxy of exogenous exposures, improved the replication of significant PRS-trait associations from 37.5% (6 of 16) in the entire sample to 90% (18 of 20) in the more homogeneous sample of individuals born before the year 1925. Our findings suggest that secular changes in exogenous exposures may substantially modify pleiotropic risk profiles affecting translation of genetic discoveries into health care.
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Affiliation(s)
- Yury Loika
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, NC, 27708-0408, USA.
| | - Irina Irincheeva
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, NC, 27708-0408, USA.
| | - Irina Culminskaya
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, NC, 27708-0408, USA
| | - Alireza Nazarian
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, NC, 27708-0408, USA
| | - Alexander M Kulminski
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, NC, 27708-0408, USA.
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Sharma K, Pooranachithra M, Balamurugan K, Goel G. Multivariate Analysis of Increase in Life Span of Caenorhabditis elegans Through Intestinal Colonization by Indigenous Probiotic Strains. Probiotics Antimicrob Proteins 2020; 11:865-873. [PMID: 29717419 DOI: 10.1007/s12602-018-9420-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The present study aimed to analyze the colonization potential of indigenous probiotic strains and to assess their effects on physiology of Caenorhabditis elegans. The protective effect of probiotics was evaluated in terms of increase in life span of the worm through colonization in the intestine. A total of 15 probiotic cultures were evaluated for their effect on mean life span, pharyngeal pumping, and normal reproduction behavior in the worms. The chemotactic behavior in terms of binary choice index was also evaluated. The adherence and colonization of the intestine of the worm by probiotics were monitored at different time intervals by enumerating the microbial population and fluorescent microscopic observations. The survival analysis-based Kaplan-Meier method indicated that the probiotic cultures increased the survival probability as compared to control strain E. coli OP50. There was no effect of feeding probiotics on physiological responses of the worm such as pharyngeal pumping and reproduction. The principal component analysis (PCA) of the results indicated Lactobacillus plantarum K90 and L. paracasei CD4 as potential probiotics with binary choice index of 0.8 as food preference of C. elegans. The strains exhibit higher adherence and colonization in the gut of worms and increased the life span by 5 days as compared to control E. coli OP50. In conclusion, feeding with probiotic cultures is effective in extending the lifespan of C. elegans; however, the colonization ability differs among the strains.
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Affiliation(s)
- Kavita Sharma
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, 173234, India
| | | | | | - Gunjan Goel
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, 173234, India.
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Fastame MC, Penna MP, Hitchcott PK. SODA: a new questionnaire for the assessment of life satisfaction in late life span. Aging Clin Exp Res 2020; 32:515-533. [PMID: 31119698 DOI: 10.1007/s40520-019-01211-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 03/05/2019] [Accepted: 04/27/2019] [Indexed: 11/24/2022]
Abstract
BACKGROUND Established measures of well-being rarely examine active lifestyle or religious behaviors. Though these could be assessed using individual measures, in older populations, the availability of a brief composite instrument with adequate psychometric properties would be desirable. AIMS Two studies were conducted to assess the psychometric properties (i.e., item adequacy, factorial structure, reliability and validity) of a new tool that was developed to self-rate personal satisfaction among Italian elders, the SODdisfazione dell'Anziano (SODA) Questionnaire. METHODS 135 young adults (mean age = 29.5 years, SD = 7.4) took part in Study 1, whereas Study 2 was carried out with 474 cognitively healthy 60-98-year-old people, that were asked to complete a battery of well-known well-being measures including the SODA one. RESULTS Study 1 showed that the SODA questionnaire is a reliable and valid self-report tool defined by three factors, assessing satisfaction about physical and cognitive health, religious well-being, and satisfaction about time spent for leisure activities, respectively. Study 2 replicated the outcomes of Study 1, highlighting the factor structure of the SODA inventory. Moreover, a series of stepwise linear regression analyses pointed out what factors (i.e., education, physical health, social desirability, participation to outdoor leisure activities, gender, and age) predicted the variance relative to the SODA indexes. DISCUSSION Current findings show the solid psychometric properties of SODA. CONCLUSIONS SODA represents a brief, but reliable and valid, instrument for the assessment of satisfaction (focused on the state level) in late adult span.
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Affiliation(s)
- Maria Chiara Fastame
- Department of Pedagogy, Psychology, Philosophy, University of Cagliari, Via Is Mirrionis 1, 09123, Cagliari, Italy.
| | - Maria Pietronilla Penna
- Department of Pedagogy, Psychology, Philosophy, University of Cagliari, Via Is Mirrionis 1, 09123, Cagliari, Italy
| | - Paul Kenneth Hitchcott
- Department of Surgery, Medical, Molecular, and Critical Area Pathology, University of Pisa, Pisa, Italy
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