泌乳期山羊在饥饿及重新喂食期间羊奶中微量成分浓度的变化及其与乳腺代谢的关系。

Changes in the concentrations of the minor constituents of goat's milk during starvation and on refeeding of the lactating animal and their relationship to mammary gland metabolism.

Chaiyabutr N, Faulkner A, Peaker M

Br J Nutr. 1981 Jan;45(1):149-57. doi: 10.1079/bjn19810087.

Abstract

Changes in the concentrations of the minor constituents of goat's milk were observed during 48 h starvation and on refeeding. 2. The concentrations of hexose phosphate and UDP-hexoses increased during starvation and decreased on refeeding. 3. The concentrations of phosphoenolpyruvate and glycerate 3-phosphate decreased during starvation and increased on refeeding. 4. Isocitrate:2-oxoglutarate increased during starvation and decreased on refeeding. 5. Changes in the minor constituents of milk can be explained in terms of the metabolic changes occurring in the mammary gland during starvation. It is proposed that changes in the concentrations of these metabolites in milk reflect changes in their concentrations in the cytosol or Golgi vesicles of the mammary gland.

摘要

在48小时饥饿期间及重新喂食时，观察了山羊奶中微量成分浓度的变化。2. 磷酸己糖和尿苷二磷酸己糖的浓度在饥饿期间增加，重新喂食时降低。3. 磷酸烯醇丙酮酸和3-磷酸甘油酸的浓度在饥饿期间降低，重新喂食时增加。4. 异柠檬酸:2-氧代戊二酸在饥饿期间增加，重新喂食时降低。5. 牛奶微量成分的变化可以用饥饿期间乳腺中发生的代谢变化来解释。有人提出，牛奶中这些代谢物浓度的变化反映了乳腺细胞质或高尔基体小泡中它们浓度的变化。