scholarly journals Age-related changes in dentate gyrus cell numbers, neurogenesis, and associations with cognitive impairments in the rhesus monkey

2015 ◽  
Vol 9 ◽  
Author(s):  
Laura B. Ngwenya ◽  
Nadine C. Heyworth ◽  
Yamin Shwe ◽  
Tara L. Moore ◽  
Douglas L. Rosene
Keyword(s):  
Rhesus Monkey ◽  
Dentate Gyrus ◽  
Cognitive Impairments ◽  
Cell Numbers ◽  
Age Related ◽  
Age Related Changes

Age-Related Changes of Elements and Relationships Among Elements in Human Hippocampus, Dentate Gyrus, and Fornix

2010 ◽  
Vol 138 (1-3) ◽  
pp. 42-52 ◽  
Author(s):  
Yoshiyuki Tohno ◽  
Setsuko Tohno ◽  
Nutcharin Ongkana ◽  
Patipath Suwannahoy ◽  
Cho Azuma ◽  
...  
Keyword(s):  
Dentate Gyrus ◽  
Human Hippocampus ◽  
Age Related ◽  
Age Related Changes

Age-related changes in potassium-evoked overflow of dopamine in the striatum of the rhesus monkey

1995 ◽  
Vol 16 (6) ◽  
pp. 939-946 ◽  
Author(s):  
Greg A. Gerhardt ◽  
Wayne A. Cass ◽  
Michael Henson ◽  
Zhiming Zhang ◽  
Aliza Ovadia ◽  
...  
Keyword(s):  
Rhesus Monkey ◽  
Age Related ◽  
Age Related Changes

scholarly journals Age related changes in testicular histomorphometry and spermatogenic activity of bulls

2021 ◽  
Vol 72 (3) ◽  
pp. 3139
Author(s):  
Y BELKHIRI ◽  
S BENBIA ◽  
A DJAOUT
Keyword(s):  
Sexual Development ◽  
Production Capacity ◽  
Sperm Production ◽  
Reproductive State ◽  
Cell Numbers ◽  
Cell Efficiency ◽  
Age Related ◽  
The Mean ◽  
Tubular Diameter ◽  
Age Related Changes

The aim of the present study was to evaluate age related changes in testicular histomorphometry and spermatogenic activity of bulls during their sexual development. A total of 36 bulls were selected and divided into four groups (n=9 in each) according to their age. Bulls included in Groups I, II, III and IV were 10, 12, 14 and 16 months old respectively. Left testes of bulls were subjected to histomorphometry after slaughter. Statistical analysis revealed that the secondary spermatocytes, round and elongated spermatids increased significantly (P˂0.05) with the age of bulls. Likewise, both sertoli and leydig cell numbers increased significantly (P˂0.05) with the age of bulls. However, the number of spermatogonia and primary spermatocytes did not change (P>0.05) due to age. The mean tubular diameter increased from 200.70±5.45 μm (10 months of age) to 227.30±9.16 μm (16 months of age) and the total volume of seminiferous tubule per testis from 69.63±1.50 % (10 months of age) to 84.64±2.53 % (16 months of age). A positive linear relationship (P<0.05) was found between meiotic index (Y) and the age (X, in month), which was characterized by the equation 0.048X+3.135 and a coefficient of correlation (R) of 0.396. The correlation between age and sertoli cell efficiency was 0.482 with a regression equation Y= 0.141X+7.696. It is concluded that histomorphometric parameters of the bulls’ testes and spermatogenic activity are correlated with the age, so these parameters provide a reliable tool for the assessment of the reproductive state and sperm production capacity of a bull in a breeding program.

Age-related changes of γ-aminobutyric acid transaminase immunoreactivity in the hippocampus and dentate gyrus of the Mongolian gerbil

2004 ◽  
Vol 1017 (1-2) ◽  
pp. 77-84 ◽  
Author(s):  
In Koo Hwang ◽  
Dae Won Kim ◽  
Ki-Yeon Yoo ◽  
Duk Soo Kim ◽  
Kil-Soo Kim ◽  
...  
Keyword(s):  
Dentate Gyrus ◽  
Mongolian Gerbil ◽  
Aminobutyric Acid ◽  
Age Related ◽  
Age Related Changes

Mild Age-Related Changes in the Dentate Gyrus of Adult Rhesus Monkeys

1995 ◽  
Vol 153 (1) ◽  
pp. 39-48 ◽  
Author(s):  
J. Tigges ◽  
J.G. Herndon ◽  
D.L. Rosene
Keyword(s):  
Dentate Gyrus ◽  
Rhesus Monkeys ◽  
Age Related ◽  
Age Related Changes
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