Sato E, Ishibashi T, Iritani A
Fertil Steril. 1980 Jul;34(1):55-7. doi: 10.1016/s0015-0282(16)44840-5.
An inhibin-like substance, a follicle-stimulating hormone (FSH) inhibitor, was isolated from porcine follicular fluid and purified. Serum FSH levels of unilaterally ovariectomized mice which received injections of the inhibitor were lower than those of unilaterally ovariectomized mice which received injections of saline. The inhibitor also suppressed FSH binding to granulosa cells in vitro. These results suggest that this protein is an FSH inhibitor and that it has two modes of action: suppression of FSH levels in serum and suppression of FSH binding to granulosa cells.