Morphometric and hormonal changes during the Chimpanzee menstrual cycle

摘要: Background  Sex steroids affect many peripheral tissue sites in female mammals. Receptors for these hormones have been found skin, fat, and bone. In women, tissues can show morphological changes during the menstrual cycle that may be directly related to steroid secretion. Methods The present study was done on chimpanzees document morphometric markers associated with (anogenital swelling volume, skin fold thickness as indicator of subcutaneous bony diameters mandible, wrist, elbow) compare them cyclic patterns estradiol, progesterone, testosterone, gonadotropins, prolactin. Results  Swelling volume changed significantly over cycle. All other parameters showed variation without statistical significance. Skin folds were thickest luteal phase. Bony displayed similar but less distinctive changes. Testosterone correlated positively diameter sites, inversely fat. No relationships either estradiol or progesterone found. We assume fat bone exhibit cycle-dependent caused by secretion.