The aim of this study was to evaluate the efficiency of low-dose hCG (human chorionic gonadotropin) (500 IU/week for 3 weeks) in the treatment of cryptorchidism and in the assessment of Leydig cell functions. We include 35 male patients who had been diagnosed with cryptorchidism by the pediatric endocrinology specialist in the study. Twenty-one cases (Group I) received 500 IU/week of hCG while ...

Objective Currently, there is no agreement on the optimal urinary derived human chorionic gonadotropin (u-hCG) dose requirement for initiating final oocyte maturation prior to oocyte collection in in vitro fertilization (IVF), but doses that range from 2500- 15000 IU have been used. We intended to determine whether low dose u-hCG was effective for oocyte maturation in IVF/intracytoplasmic sperm...

BACKGROUND Currently, the likely success of single-dose methotrexate (MTX) (50 mg/m(2)) for the treatment of ectopic pregnancy is indicated by a >15% decrease in hCG from days 4-7 after administration. The aim of this study was to assess this protocol and to develop new rules that could be used to predict the outcome at an earlier stage. METHODS Data were collected prospectively. Women receiv...

BACKGROUND Captive breeding programs for endangered amphibian species often utilize exogenous hormones for species that are difficult to breed. The purpose of our study was to compare the efficacy of two different hormones at various concentrations on sperm production, quantity and quality over time in order to optimize assisted breeding. METHODS Male American toads (Anaxyrus americanus) were...

Methotrexate (MTX) is an accepted regimen for conservative treatment of unruptured ectopic pregnancy. However ,gestational sac greater than 3.5 cm, existence of cardiac activity and high titers of serum beta human chorionic gonadotrophin ( B-HCG) levels are relative contraindications of Mtx treatment. A 29-year-old, gravida 3, parity 1 and a 34-year-old nulliparous women presented with a compla...

in circumstances such as in vitro fertilization (ivf) or in patients with luteal phase defect, one needs to ensure the establishment of pregnancy as soon as possible. at the same time, a question arises: how can a physician make sure that the β-hcg is of an endogenous source and not the residue of the prescribed drugs (hcg)? in this article we have studied the elimination time of 1m injection o...

introduction: considering the high incidence of preterm labor and its known complications, and that human myometrium contains receptors for human chronic gonadotropin (hcg) and that hcg can inhibit myometrial contractions on vitro, made me study treating effects of hcg on preterm labor. this clinical trial study was carried out to compare the effect of hcg, and magnesium sulfate (mgso4) on prev...

The chromatographic separation of gonadotropin-inhibiting substance in the extract obtained from adult male urine according to the method of Johnsen was attempted on a Sephadex G-100 column. The ovulation assay was employed to detect the inhibitor in the fractions using female mice, 19-20 days old, which received PMS and HCG to obtain a minimum constant ovulation. In the chromatography of the e...