Serum leptin levels during the periparturient period in cows.
Serum leptin concentrations were measured in antenatal and postnatal cows housed at two different locations. The mean serum leptin concentration was 9.2 +/- 0.6 ng/m l (n=22) in one group, and was slightly lower in the other (7.4 +/- 0.4 ng/ml, n=54), probably because of the different nutritional conditions between the two groups. There was no consistent variation in relation to the menstrual cycle and the periparturient period in both groups. Moreover, serum leptin concentrations during the periparturient period were independent of the number of delivery and the incidence of mastitis and milk fever. These results are quite different from those in rodents and human, suggesting the different regulatory mechanism of circulating leptin concentration in cows.
Soliman
Mohamed
M
Laboratory of Biochemistry, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan.
Ishioka
Katsumi
K
Yoshida
Ryusuke
R
Komabayashi
Kenichi
K
Hatai
Hitoshi
H
Matsui
Yoshitaka
Y
Hirai
Tuneo
T
Katagiri
Seiji
S
Takahashi
Yoshiyuki
Y
Kawakita
Yumi
Y
Abe
Hiroyuki
H
Kitamura
Hiroshi
H
Kimura
Kazuhiro
K
Saito
Masayuki
M
D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002417:Cattle / Q000097:blood*; D030762:Estrous Cycle / Q000097:blood; D005260:Female; D007774:Lactation / Q000097:blood; D020738:Leptin / Q000097:blood*; D008414:Mastitis, Bovine / Q000097:blood; D010298:Parity; D010319:Parturient Paresis / Q000097:blood; D036801:Parturition / Q000097:blood*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000097:blood / Q000662:veterinary; D011270:Pregnancy, Animal / Q000097:blood*; D013997:Time Factors
D020738:Leptin