scholarly journals INFLUENCE OF HOMOZYGOSITY FOR ROSE COMB ON FUMARASE, ACONITASE, ISOCITRIC DEHYDROGENASE AND MALIC DEHYDROGENASE ACTIVITY IN SPERMATOZOA OF THE DOMESTIC FOWL (GALLUS DOMESTICUS)

Reproduction ◽  
1969 ◽  
Vol 18 (1) ◽  
pp. 89-95 ◽  
Author(s):  
R. B. BUCKLAND ◽  
F. H. WILCOX ◽  
C. S. SHAFFNER
Keyword(s):  
Dehydrogenase Activity ◽  
Domestic Fowl ◽  
Gallus Domesticus ◽  
Malic Dehydrogenase ◽  
Isocitric Dehydrogenase

Changes in 3β-hydroxy-Δ5-steroid dehydrogenase activity in granulosa tissue during the ovulatory cycle of the laying hen (Gallus domesticus)

1985 ◽  
Vol 106 (3) ◽  
pp. 269-273 ◽  
Author(s):  
D. G. Armstrong
Keyword(s):  
Enzyme Activity ◽  
Dehydrogenase Activity ◽  
Domestic Fowl ◽  
Ovarian Follicle ◽  
Laying Hen ◽  
Gallus Domesticus ◽  
Ovulatory Cycle ◽  
Lh Surge ◽  
Maximal Plasma ◽  
Steroid Dehydrogenase

ABSTRACT The object of this study was to examine changes in the activity of granulosa 3β-hydroxy-Δ5-steroid dehydrogenase during the ovulatory cycle of the domestic fowl. The enzyme activity in granulosa tissue from the largest follicle increased significantly during the period 8–14 h before an expected ovulation. The increase in activity occurs before the preovulatory surge of LH and near the time of lights off. During the 4–8 h period before an ovulation, i.e. the time of maximal plasma LH concentrations, 3β-hydroxy-Δ5-steroid dehydrogenase activity decreased in granulosa tissue from the largest follicle. This observation is explained by proposing that the enzyme is inhibited by the large amounts of progesterone found in the tissue at this time. The results indicate that important biochemical changes are taking place within granulosa tissue of the largest ovarian follicle before the preovulatory LH surge. J. Endocr. (1985) 106, 269–273

scholarly journals SORBITOL DEHYDROGENASE ACTIVITY IN SPERMATOZOA OF THE DOMESTIC FOWL, GALLUS DOMESTICUS

Reproduction ◽  
1972 ◽  
Vol 31 (2) ◽  
pp. 307-308
Author(s):  
G. H. GEORGIEV ◽  
V. K. DOKOV ◽  
Z. V. ANGELOVA
Keyword(s):  
Dehydrogenase Activity ◽  
Domestic Fowl ◽  
Gallus Domesticus ◽  
Sorbitol Dehydrogenase

Effect of thyrotropin and thyroxine on serum malic and isocitric dehydrogenases

1965 ◽  
Vol 208 (4) ◽  
pp. 639-641
Author(s):  
S. G. Benson ◽  
L. J. Murphy ◽  
H. M. Klitgaard
Keyword(s):  
Enzyme Activity ◽  
Dehydrogenase Activity ◽  
Malic Dehydrogenase ◽  
Isocitric Dehydrogenase ◽  
Enzyme Systems ◽  
Metabolic States

The effect of altered levels of thyrotropin and thyroxine on NAD- and NADP-linked enzyme systems in the rat was studied. Serum malic and isocitric dehydrogenases were determined in normal, iodine-deficient, thyroidectomized, thyroxine-treated, thyroxine- and TSH-treated, and hypophysectomized animals. Serum malic dehydrogenase was found to be significantly increased in those metabolic states where an elevation of TSH could be predicted. This change in enzyme activity appeared to be independent of expected circulating thyroxine levels. Serum isocitric dehydrogenase was unaffected by the above treatments. Thyrotropin did not appear to regulate directly serum malic dehydrogenase activity. The physiologic significance of these findings is not known.

3β-Hydroxy-Δ5-steroid dehydrogenase activity in the rapidly growing ovarian follicles of the domestic fowl (Gallus domesticus)

1982 ◽  
Vol 93 (3) ◽  
pp. 415-421 ◽  
Author(s):  
D. G. Armstrong
Keyword(s):  
Dehydrogenase Activity ◽  
Domestic Fowl ◽  
Specific Activity ◽  
Ovarian Follicles ◽  
Relative Increase ◽  
Gallus Domesticus ◽  
Ovulatory Cycle ◽  
The Third ◽  
Glucose 6 Phosphate Dehydrogenase ◽  
Steroid Dehydrogenase

The total and specific activity of 3β-hydroxy-Δ5-steroid dehydrogenase, isocitrate dehydrogenase (NADP+) and glucose-6-phosphate dehydrogenase were measured in ovarian follicles from the domestic fowl. The enzymes were assayed in the five largest yolk-filled follicles which were sampled twice during the ovulatory cycle, at 1 h and 16 h before an expected ovulation. The total and specific activity of granulosa enzymes increased throughout the hierarchy and reached a maximum in the largest follicle. The relative increase in 3β-hydroxy-Δ5-steroid dehydrogenase activity was greater than that of the other two enzymes examined. The total thecal 3β-hydroxy-Δ5-steroid dehydrogenase activity reached a maximum in the third and fourth largest follicles. Thereafter its activity decreased up to the time of ovulation. The activity of 3β-hydroxy-Δ5-steroid dehydrogenase and glucose-6-phosphate dehydrogenase in follicles collected 1 h before an ovulation were significantly less than the activity in corresponding follicles collected 16 h before an ovulation.

Nucleotide sequences and unusual electrophoretic behavior of the W chromosome-specific repeating DNA units of the domestic fowl, Gallus gallus domesticus

Chromosoma ◽  
1987 ◽  
Vol 96 (1) ◽  
pp. 18-25 ◽  
Author(s):  
Hiroshi Kodama ◽  
Hisato Saitoh ◽  
Masahide Tone ◽  
Satoru Kuhara ◽  
Yoshiyuki Sakaki ◽  
...  
Keyword(s):  
Domestic Fowl ◽  
Gallus Gallus ◽  
Nucleotide Sequences ◽  
Gallus Domesticus ◽  
Gallus Gallus Domesticus ◽  
W Chromosome ◽  
Electrophoretic Behavior
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