Fig. 4From: Neuropeptide Y directly reduced apoptosis of granulosa cells, and the expression of NPY and its receptors in PCOS subjectsNPY concentration in human follicular fluid of women without PCOS was weakly tended to correlate with BMI. Follicular fluid was collected from single leading follicle at egg-retrieval process and assessed NPY level using a specific ELISA kit. Recruited IVF patients were under 40 years old and had normal body weight (BMI 18.5–24.9). NPY level in follicular fluid of non-PCOS had a significant weak correlation with BMI positively, while those of PCOS did not. Each dot indicates an individual result (non-PCOS, n = 42; PCOS, n = 23) (A, B, C, D), bars indicate mean and SD (A) and regression curve (B, C, D). Data were analyzed by unpaired t test (A) and Pearson’s test (B, C, D)Back to article page