scholarly journals Distribution and Age-Related Changes in Somatostatin-Immunopositive Cell in the Small Intestinal of African Ostrich Chicks

2012 ◽  
Vol 11 (19) ◽  
pp. 3506-3511
Author(s):  
K.M. Peng ◽  
Chen Min ◽  
Wang Lei ◽  
T.T. Liu ◽  
Song Hui ◽  
...  
Keyword(s):  
Immunopositive Cell ◽  
Age Related ◽  
Small Intestinal ◽  
Age Related Changes

Intestinal lactase (beta-galactosidase) and other disaccharidase activities of suckling and adult common brushtail possums, Trichosurus vulpecula (Marsupialia:Phalangeridae)

1989 ◽  
Vol 1 (4) ◽  
pp. 315 ◽  
Author(s):  
EA Crisp ◽  
M Messer ◽  
PE Cowan
Keyword(s):  
Brush Border ◽  
The Other ◽  
Trichosurus Vulpecula ◽  
Galactosidase Activity ◽  
Lactase Activity ◽  
Age Related ◽  
Small Intestinal ◽  
Brush Border Enzyme ◽  
Beta Galactosidase ◽  
Age Related Changes

Small-intestinal disaccharidase activities of eight suckling T. vulpecula, aged from 34 to 150 days, and of two adult animals were investigated. Intestinal maltase, isomaltase and sucrase activities increased with age, whereas lactase activities decreased. Trehalase activities were relatively high in all animals and showed no obvious age-related changes. Three separate beta-galactosidase activities, one neutral and two acid, acted on lactose. The neutral beta-galactosidase activity appeared to be due to a brush border enzyme similar to that of eutherian mammals, whereas the acid beta-galactosidases were soluble and probably of lysosomal origin. One of these, acid beta-galactosidase-1, had similar properties to the sole intestinal beta-galactosidase of macropodid marsupials, whereas the other, acid beta-galactosidase-2, has not previously been described. Galactosyl oligosaccharides isolated from macropodid milk were readily hydrolysed by both acid beta-galactosidases but not by the neutral beta-galactosidase. The total intestinal lactase activity in animals aged up to 125 days was due mainly to acid beta-galactosidase-1, whereas in older animals it was due mostly to the neutral beta-galactosidase; this suggests that late in lactation the young T. vulpecula change from a macropodid mode of digestion of galactosyl oligosaccharides to a eutherian mechanism for the digestion of lactose. These findings may have implications for the hand-rearing of orphaned T. vulpecula.

Age-related changes of the 3′APOB-VNTR genotype pool in ageing cohorts

1998 ◽  
Vol 62 (2) ◽  
pp. 115-122 ◽  
Author(s):  
G. De BENEDICTIS ◽  
L. CAROTENUTO ◽  
G. CARRIERI ◽  
M. De LUCA ◽  
E. FALCONE ◽  
...  
Keyword(s):  
Age Related ◽  
Age Related Changes

Age-Related Changes in Flexible Listening: Studies on Meta-Audition and the False Hearing Effect

2012 ◽  
Author(s):  
Chad S. Rogers ◽  
Larry L. Jacoby ◽  
Mitchell S. Sommers ◽  
Arthur Wingfield
Keyword(s):  
Age Related ◽  
Listening Studies ◽  
Age Related Changes

Age-Related Changes in Activation of Mitogen-Activated Protein Kinase Cascades by Oxidative Stress

1998 ◽  
Vol 3 (1) ◽  
pp. 23-27 ◽  
Author(s):  
Kathryn Z Guyton ◽  
Myriani Gorospe ◽  
Xiantao Wang ◽  
Yolanda D Mock ◽  
Gertrude C Kokkonen ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Protein Kinase ◽  
Mitogen Activated Protein Kinase ◽  
Age Related ◽  
Mitogen Activated Protein ◽  
Age Related Changes
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