Whole blood lactate and serum concentrations of leptin, free fatty acids, and glucose were assessed at rest and immediately after exercise.
Concentrations of leptin, insulin, IGF-1, and glucose in plasma were reduced (P<0.05) by 24, 10, 24, and 48 h of fasting, respectively.
We hypothesized that women with small-for-gestational-age (SGA) neonates would have lower concentrations of leptin compared to women with appropriately grown infants (AGA).
There were no significant differences in the respiratory exchange ratio, whole blood lactate concentration, serum concentrations of leptin, free fatty acids, or blood glucose between the feeding trials (P >.05).
In all subjects, serum concentrations of leptin, insulin, testosterone, progesterone, and estradiol and body mass index and waist-to-hip ratio were measured before and after 4, 8, and 12 weeks of treatment with goserelin (3.6 mg every 4 weeks).
The high-BCS group had the lowest postpartum energy balance and the greatest plasma concentrations of leptin prepartum, nonesterified fatty acids and β-hydroxybutyrate postpartum, insulin-like growth factor 1, and milk fat content.
We determined the effects of short-term fasting and refeeding on temporal changes in plasma concentrations of leptin, insulin, insulin-like growth factor- 1 (IGF-1), growth hormone (GH), glucose, and nonesterified fatty acids (NEFA), in early lactating cows, non-lactating pregnant cows, and postpubertal heifers.
For male progeny, exposure to maternal diets low in protein during the first trimester of gestation resulted in greater FT4 at birth (P < 0.05) which was subsequent to lower concentrations of leptin in maternal plasma at 271 days of gestation compared with their high-protein exposed counterparts.
The current experiment was designed to compare the reproductive characteristics of high BCS mares with hyperleptinemia to those with normal (low) plasma concentrations of leptin during the winter and the first estrous cycle (or the first full cycle encountered for those already cycling).
Concentrations of leptin, cholesterol, ceruloplasmin, reactive oxygen metabolites, myeloperoxidase, retinol, tocopherol, IgG, and total protein, as well as expression of SOD2 and SELL increased markedly by 2 d in both groups; whereas, cortisol, albumin, acid-soluble protein, NEFA, insulin, as well as expression of IL6, TLR4, IL1R2, LTC4S, and ALOX5 decreased by 2 d.
These concentrations of leptin can activate leptin receptor [35], [36].
