scholarly journals Mitochondrial aconitase 1 regulates age‐related memory impairment via autophagy/mitophagy‐mediated neural plasticity in middle‐aged flies

Aging Cell ◽  
2021 ◽  
Author(s):  
Yun‐Ho Cho ◽  
Gye‐Hyeong Kim ◽  
Joong‐Jean Park
Keyword(s):  
Neural Plasticity ◽  
Memory Impairment ◽  
Middle Aged ◽  
Age Related ◽  
Mitochondrial Aconitase

scholarly journals Inflamm-Aging Is Associated with Lower Plasma PTX3 Concentrations and an Impaired Capacity of PBMCs to Express hTERT following LPS Stimulation

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Aaron L. Slusher ◽  
Tiffany M. Zúñiga ◽  
Edmund O. Acevedo
Keyword(s):  
Gene Expression ◽  
Young Adults ◽  
Telomere Length ◽  
Immune Cell ◽  
Ex Vivo ◽  
Middle Aged ◽  
Human Telomerase Reverse Transcriptase ◽  
Negatively Associated ◽  
Htert Gene ◽  
Age Related

Age-related elevations in proinflammatory cytokines, known as inflamm-aging, are associated with shorter immune cell telomere lengths. Purpose. This study examined the relationship of plasma PTX3 concentrations, a biomarker of appropriate immune function, with telomere length in 15 middle-aged (40-64 years) and 15 young adults (20-31 years). In addition, PBMCs were isolated from middle-aged and young adults to examine their capacity to express a key mechanistic component of telomere length maintenance, human telomerase reverse transcriptase (hTERT), following ex vivo cellular stimulation. Methods. Plasma PTX3 and inflammatory cytokines (i.e., IL-6, IL-10, TGF-β, and TNF-α), PBMC telomere lengths, and PBMC hTERT gene expression and inflammatory protein secretion following exposure to LPS, PTX3, and PTX3+LPS were measured. Results. Aging was accompanied by the accumulation of centrally located visceral adipose tissue, without changes in body weight and BMI, and alterations in the systemic inflammatory milieu (decreased plasma PTX3 and TGF-β; increased TNF-α (p≤0.050)). In addition, shorter telomere lengths in middle-aged compared to young adults (p=0.011) were negatively associated with age, body fat percentages, and plasma TNF-α (r=−0.404, p=0.027; r=−0.427, p=0.019; and r=−0.323, p=0.041, respectively). Finally, the capacity of PBMCs to increase hTERT gene expression following ex vivo stimulation was impaired in middle-aged compared to young adults (p=0.033) and negatively associated with telomere lengths (r=0.353, p=0.028). Conclusions. Proinflammation and the impaired hTERT gene expression capacity of PBMCs may contribute to age-related telomere attrition and disease.

Perceptions of Sex Roles of Young and Middle-Aged Women and Men

1982 ◽  
Vol 55 (2) ◽  
pp. 559-562
Author(s):  
Claire Etaugh ◽  
Sharon Weber
Keyword(s):  
College Students ◽  
Sex Roles ◽  
Sex Role ◽  
Middle Aged ◽  
Age Related ◽  
Aged Woman ◽  
Male College ◽  
Middle Aged Woman ◽  
Age Related Changes ◽  
Female Subjects

48 female and 48 male college students used the Bern Sex-role Inventory to describe either a young or middle-aged woman or man. Female subjects perceived that women become increasingly feminine and less androgynous with age. No age-related changes were perceived in men's sex-role behaviors.

Midlife Aerobic Exercise and Dynamic Cerebral Autoregulation: Associations with Baroreflex Sensitivity and Central Arterial Stiffness

2021 ◽  
Author(s):  
Tsubasa Tomoto ◽  
Justin Repshas ◽  
Rong Zhang ◽  
Takashi Tarumi
Keyword(s):  
Arterial Stiffness ◽  
Aerobic Exercise ◽  
Cerebral Autoregulation ◽  
Baroreflex Sensitivity ◽  
Function Analysis ◽  
Middle Aged ◽  
Age Related ◽  
Transfer Function Analysis ◽  
Carotid Distensibility ◽  
Dynamic Cerebral Autoregulation

Midlife aerobic exercise may significantly impact age-related changes in the cerebro- and cardiovascular regulations. This study investigated the associations of midlife aerobic exercise with dynamic cerebral autoregulation (dCA), cardiovagal baroreflex sensitivity (BRS), and central arterial stiffness. Twenty middle-aged athletes (MA) who had aerobic training for >10 years were compared with 20 young (YS) and 20 middle-aged sedentary (MS) adults. Beat-to-beat cerebral blood flow velocity, blood pressure (BP), and heart rate were measured at rest and during forced BP oscillations induced by repeated sit-stand maneuvers at 0.05 Hz. Transfer function analysis was used to calculate dCA and BRS parameters. Carotid distensibility was measured by ultrasonography. MA had the highest peak oxygen uptake (VO2peak) among all groups. During forced BP oscillations, MS showed lower BRS gain than YS, but this age-related reduction was absent in MA. Conversely, dCA was similar among all groups. At rest, BRS and dCA gains at low frequency (~0.1 Hz) were higher in the MA compared with MS and YS groups. Carotid distensibility was similar between MA and YS groups, but it was lower in the MS. Across all subjects, VO2peak was positively associated with BRS gains at rest and during forced BP oscillations (r=0.257~0.382, p=0.003~0.050) and carotid distensibility (r=0.428~0.490, p=0.001). Furthermore, dCA gain at rest and carotid distensibility were positively correlated with BRS gain at rest in YS and MA groups (all p<0.05). These findings suggest that midlife aerobic exercise improves central arterial elasticity and BRS which may contribute to CBF regulation through dCA.

Older Parents’ and Middle-Aged Children’s Communication as Predictors of Children’s Successful Aging

2018 ◽  
Vol 38 (3) ◽  
pp. 305-328 ◽  
Author(s):  
Quinten S. Bernhold
Keyword(s):  
Path Analysis ◽  
Successful Aging ◽  
Aging Process ◽  
Family Members ◽  
Middle Aged ◽  
Older Parents ◽  
Subjective Perceptions ◽  
Age Related ◽  
Language And Communication

The communicative ecology model of successful aging (CEMSA) examines how people’s language and communication surrounding the aging process (e.g., making age-related excuses) predicts successful aging. Using the CEMSA, this study examined how middle-aged U.S. American children’s and their parents’ age-related communication predicts children’s subjective perceptions of their own successful aging, via children’s aging efficacy. Three communication profiles emerged for children and their parents, namely engaged, bantering, and disengaged agers. Path analysis revealed that parents’ age-related communication predicted children’s successful aging, via children’s aging efficacy. Relative to children with disengaged parents, children with bantering parents were more likely to be efficacious with respect to their aging, which in turn positively predicted successful aging. The language and communication people observe from older family members may be consequential in shaping their aging trajectories for the better or worse.

scholarly journals Selective Loss of Thin Spines in Area 7a of the Primate Intraparietal Sulcus Predicts Age-Related Working Memory Impairment

2018 ◽  
Vol 38 (49) ◽  
pp. 10467-10478 ◽  
Author(s):  
Sarah E. Motley ◽  
Yael S. Grossman ◽  
William G.M. Janssen ◽  
Mark G. Baxter ◽  
Peter R. Rapp ◽  
...  
Keyword(s):  
Working Memory ◽  
Memory Impairment ◽  
Intraparietal Sulcus ◽  
Selective Loss ◽  
Age Related ◽  
Area 7A
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