HCG


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gonadotropin

 [go´nah-do-tro″pin]
any hormone having a stimulating effect on the gonads. Two such hormones are secreted by the anterior pituitary gland: follicle-stimulating hormone and luteinizing hormone, both of which are active, but with differing effects, in the two sexes. Called also gonadotropic hormone.
chorionic gonadotropin (human chorionic gonadotropin (HCG) (hCG))
1. a glycopeptide hormone that is produced by cells of the fetal placenta and maintains the function of the corpus luteum during the first few weeks of pregnancy. It is thought to promote steroidogenesis in the fetoplacental unit and to stimulate fetal testicular secretion of testosterone. It can be detected by immunoassay in the maternal urine within days after fertilization; this provides the basis for the most commonly used pregnancy test.
2. the same principle obtained from the urine of pregnant women, used in treatment of certain cases of cryptorchidism and male hypogonadism, to induce ovulation and pregnancy in certain infertile, anovulatory women, and to increase the numbers of oocytes for patients attempting conception using assisted reproductive technologies such as gamete intrafallopian transfer or in vitro fertilization; administered intramuscularly. See also choriogonadotropin alfa.

HCG

, hCG

HCG

,

hCG

human chorionic gonadotropin.

HCG

abbr.
human chorionic gonadotropin

HCG

abbreviation for human chorionic gonadotropin. See chorionic gonadotropin.

hCG

Human choriogonadotropic hormone A dimeric glycoprotein hormone synthesized and secreted by the placenta composed of a 92 amino acid α subunit similar to pituitary hormones–TSH, FSH and LH, and a unique 145 amino acid β-subunit linked to lactose and hexosamine that is produced by the syncytiotrophoblast; the β subunit is an early marker for pregnancy; in the fetal liver and kidney, and certain tumors; hCG is released in a pulsatile fashion in normal pregnancy, peaks at the 10th gestational wk with serum levels of 50-140 000 IU/L, later falling to 10-50 000 IU/L2; hCG may be low to undetectable in ectopic pregnancy or ↑↑ ↑ in multiple gestation, polyhydramnios, eclampsia, erythroblastosis fetalis or trophoblastic disease–eg, hydatidiform mole, choriocarcinoma and placental site trophoblastic tumor; hCG levels may be ↑↑↑ in tumors producing either the β subunit or both α & β subunits, measured by ELISA or RIA

hCG

Abbreviation for human chorionic gonadotropin.

HCG (human chorionic gonadotrophin)

a HORMONE secreted by the TROPHOBLAST of the developing foetal tissues. It maintains the CORPUS LUTEUM during the first three to four months in pregnancy, thus ensuring a supply of PROGESTERONE for maintaining the uterus lining and preventing MENSTRUATION. HCG begins to be secreted as soon as the trophoblast implants in the uterine wall and it is at its highest concentration between the 7th and 10th weeks of pregnancy. The urine of women in the first month of pregnancy contains enough HCG for this to be easily detected by chemical means (the ‘pregnancy test’). After reaching its peak, HCG falls to low concentrations and its only known function is to stimulate the production of TESTOSTERONE by the testes of the male foetus. HCG has almost the same combined properties as LH and LUTEOTROPIC HORMONES.

Human chorionic gonadotropin (hCG)

A hormone excreted during the development of an embryo or fetus.

HCG, hCG

human chorionic gonadotropin.

HCG, hCG

human chorionic gonadotropin.

Patient discussion about HCG

Q. Does a slow rise in HCG hormone during pregnancy a condition to worry? My wife is in second trimester of pregnancy and had a HCG test, which shows fewer levels as compared to previous results. Does a slow rise in HCG hormone during pregnancy a condition to worry?

A. When you have a hCG test in the start of pregnancy, the level of hCG in your blood must increase to double in 2-3 days. While the hCG doubling time will slow down from the mid of the first trimester and hCG level also begin to slowly reduce from 4th month onwards. Thus at this stage there is nothing to worry about, it is normal.

More discussions about HCG
References in periodicals archive ?
Our Partnership with HCG, India's largest cancer Care Network ensures that we can offer the highest quality of cancer care with employing a multi-disciplinary team of oncologists and further investment in advanced technologies.
Since women have been reported to find dramatic relief from endometriosis using HCG, it might seem as if eliminating gluten is unnecessary; but for the best total body health results, anyone with endometriosis should always use HCG and go gluten-free.
During the 21 to 40 days of this phase, you must stick to a diet of just 500 calories a day, supplemented by HCG in controlled doses.
Approximately one percent of dermoid cysts contain malignant cells that develop into squamous cell carcinoma later in life and the patient's extremely high HCG level warranted serious concern.
If you have someone who happens to have a 2,000 level of HCG, despite the fact that they have [ectopic] cardiac activity, they should still have a very good success level" with methotrexate, he told this newspaper.
Above the Lion's tail is HCG 57, better known as Copeland's Septet.
In the very last two paragraphs of the nine-page report, the researchers wrote: "We have started a clinical trial on patients with total paraplegia using 20,000 units of HCG intramuscularly on the first day, followed by 10,000 units every day for the first week, and then 10,000 units every alternate day for five weeks.
Conclusion: Ratio of blood/curettage material HCG can be used as a reliable method for differentiating ectopic pregnancy and miscarriage.
US HCG Injections, a company that provides HCG Shots online, has launched a new lipotropic injection, Lipo 7, it was reported yesterday.
This is because HCG is the majority owner of Medi-Surge, with a shareholding of 90.
Sensitivity analysis confirmed that the strategy of HCG followed by US was the most favorable, provided the sensitivity of the US for diagnosing intrauterine pregnancy was above 93%.