Chorionic Gonadotropin

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Related to Beta-HCG: BHCG

chorionic gonadotropin

[‚kȯr·ē′än·ik gō‚nad·ə′trō·pən]

Chorionic Gonadotropin


a hormone produced by the villi of the chorion and the placenta in some of the higher apes and in man. It is a complex protein (glycoprotein) containing the carbohydrates galactose (10.7 percent) and hexosamine (5.2 percent) and having a molecular weight of approximately 100,000. Chorionic gonadotropin has a stimulating effect on the corpus luteum, causing it to grow in size, increasing its secretory activity and prolonging its life; it converts the corpus luteum into the corpus luteum of pregnancy, which continues to secrete the hormone progesterone until the placenta is fully formed.

Chorionic gonadotropin, while similar in effect to the luteinizing hormone of the pituitary, differs from it in certain respects: it does not restore gonads atrophied after removal of the pituitary, it has no effect on avian gonads, and it causes only a slight enlargement of the ovaries in immature rodents.

References in periodicals archive ?
Makhijani and her coauthors included 398 patients whose medical histories allowed assessment of risk factors and whose record included at least two beta-HCG values taken 36-72 hours apart.
Patients with declining beta-hCG regularly followed up until their beta-hCG level was below 5 mIU/mL.
Follow-up with serial Beta-hCG is crucial in managing these cases.
Serial serum beta-hCG levels after surgery showed a significant decline to 7 mU/mL 26 days later.
Because the oopherectomy and pathology reported a benign cystic teratoma that coincided with normalization of HCG levels, it was presumed that a rare occurrence of an HCG secreting dermoid cyst was the source of production of her high beta-hCG levels that mimicked an ectopic pregnancy.
Co inside, including MSAFP, beta-HCG and uE3 that it doing with increase the inhibin- A and doing four to four.
As of July 20, 2009, his beta-HCG and alpha-fetoprotein were normal and there was no evidence of relapse on the CT scan of the chest, abdomen and pelvis (Fig.
Highlight all the amino acids in 1HRP_B to turn beta-HCG yellow.
A three-year study (1995-1998) of more than 10,000 specimens collected at nine weeks to 13 weeks of gestation indicated that first trimester screening using PAPP-A, free beta-hCG, and NT measurement significantly improved detection of DS and Trisomy 18, with detection rates of 91 percent and 97 percent respectively.
In some of Talwar's work, beta-hCG is linked to tetanus toxoid in order to increase its overall immunity-stimulating potency while also producing immunity to tetanus.
23 out of 25 patients had pre-treatment beta-HCG level < 5000 IU/L and 2 had 5000 IU/L, both cases were successfully treated with multi-dose Methotrexate.

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