Background The causes of pregnancy failure after intrauterine insemination (IUI) are
controversial. The purpose of this study was to investigate the influencing factors on clinical …

Objective This study aimed to evaluate the impact of adding 4 mg estradiol valerate to
progesterone for luteal support on pregnancy rates in IVF cycles following a long protocol …

Toxoplasmosis is an infection caused by the parasite Toxoplasma gondii. One-third of the
world's population has come into contact with this parasite. In Mexico, the prevalence is …

Decreased estradiol (E2) levels are associated with early miscarriage (EM), but the
relationship between decreased times of E2 and EM has not been reported. We aimed to …

摘要目的: 探讨子宫动脉血流参数[搏动指数(PI), 阻力指数(RI), 收缩期/舒张期血流速度(S/D)]
联合血清茁-人绒毛膜促性腺激素(茁-HCG), 孕酮(P), 雌二醇(E2) 预测复发性流产(RSA) …

Endogenous hydrogen sulfide (H2S) produced by cystathionine β-synthase (CBS) and
cystathionine-γ lyase (CSE) has emerged as a novel uterine vasodilator contributing to …

Background: The endometrium in a receptive status is critical for a successful embryo
implantation, but the receptivity of endometrium to embryos is only a short period of time …

Estrogen exerts its action via estrogen receptors (ERs), including ERα and ERβ, and has
effects on immunomodulation during pregnancy. It is known that there is a remodeling in …

Background Acupoint stimulation is a frequently used complementary treatment among
individuals undergoing assisted reproductive technology, however, the evidence for its …

Aim In frozen–thawed embryo transfer (FET), differences in endometrial preparation
methods affect the incidence of perinatal complications. However, the underlying causes are …