We sought to determine the role of ovarian vascularity and neo-angiogenesis in the development of mature follicles in polycystic ovary syndrome (PCOS) and to identify any changes induced by low-frequency electro-acupuncture (EA). Twenty-eight 21-day-old female Wistar rats were randomly divided into four groupsControl, Obesity, PCOS-like, and PCOS-like-EA (n = 7/group). Rats in the Obesity group were fed a high-fat diet throughout the experiment. Rats in the PCOS-like and PCOS-like-EA groups were implanted with a sustained-release tube containing 5-dihydrotestosterone (DHT) beneath the skin of the neck. Rats in the PCOS-like-EA group received low-frequency EA treatment starting at 70 days for 30 min five times a week for four weeks. At the end of the experiment, all rats were euthanized and perfused with hydrogel. The ovaries were collected for clarification and imaging, and ovarian vascularity and neo-angiogenesis were analyzed. Compared with Control and Obesity rats, the ovaries in DHT-induced PCOS-like rats were smaller in size and had fewer mature follicles and corpora lutea. EA increased angiogenesis in the antral follicles of PCOS-like rats, which in turn promoted follicle maturation, ovulation, and CL formation. Therefore, endogenous ovarian angiogenesis plays a very important role in follicular maturation and might be one of the peripheral and direct mechanisms of EA on PCOS.
[1]Fudan Univ, State Key Lab Med Neurobiol,Inst Acupuncture & Mo, Dept Integrat Med & Neurobiol,Brain Sci Collabora, Sch Basic Med Sci,Inst Brain Sci,Fudan Inst Integ, Shanghai 200032, Peoples R China;
[2]Shanghai Key Lab Acupuncture Mech & Acupoint Func, Shanghai 200032, Peoples R China;
[3]Univ Gothenburg, Sahlgrenska Acad, Dept Physiol Endocrinol, Inst Neurosci & Physiol, S-40530 Gothenburg, Sweden;
[4]Fudan Univ, Shanghai Med Sch, Shanghai Key Lab Female Reprod Endocrine Related, Dept Obstet & Gynecol, Shanghai 200011, Peoples R China
(8.0+极速模式)