Cell types and hormonal mechanisms associated with mid-cycle corpus luteum function.

摘要: This article reviews literature on the highly differentiated nature of luteal cell types and their regulation in mid-cycle corpus luteum ruminants. The blood vessels are composed primarily endothelial cells with few intraluteal arterioles or arteries. Blood flow to does not seem be regulated by tropic hormones, metabolic activity, autonomic nerves, but it is dependent maintenance high pressure. density capillaries lack allows an elevated, relatively unregulated flow. Steroidogenesis ruminant manifests both dependence independence from actions LH. Initial luteinization, growth, development LH action, progesterone production ruminants independent acute stimulation. apparent enigma may due distinct functional properties steroidogenic luteum. Progesterone large small respond Much produced acutely lipoproteins delivered abundant supply. Thus, cellular features produce considerable capacity.