Hormones human chorionic

Indrapichate, K., Meehan, D., Lane, T. A., et al. (1992) Biological actions of monoclonal luteinizing hormone/human chorionic gonadotropin receptor antibodies. Biol. Reprod. 46, 265-278. 

If fertilisation does not occur, the corpus luteum regresses and the levels of oestrogen and progesterone fall. However, if fertilisation does occur, the corpus luteum is maintained. Regression of the corpus luteum is prevented by the implanting blastocyst which secretes a hormone, human chorionic gonadotrophin (hCG). This occurs about a week after fertilisation. The structure of this hormone is similar to that of LH and it takes on the role of LH in maintenance of the corpus luteum. To do this, it binds to the LH receptor... 

Hormones Human chorionic gonadotropin (HCG), placental extracts Novarel NA... 

THE GONADOTROPINS (FOLLICLE-STIMULATING HORMONE LUTEINIZING HORMONE) HUMAN CHORIONIC GONADOTROPIN... 

Human pituitary GH (somatotropin) is a 191-amino-acid peptide with two sulfhydryl bridges. Its structure closely resembles that of prolactin and the placental hormone human chorionic somatomammotropin. Pituitary-derived GH is no longer used (see below). Animal GH is not completely homologous to human GH and is ineffective in humans. 

R21. Rosen, S. W., Sohlaff, S., and Roth, J., Anti-human follicle stimulating hormone complete cross reactivity with three other human glycoprotein trophic hormones, luteinising hormone, human chorionic gonadotropin and thyrotropin. In Protein and Polypeptide Hormones, Proc. Int. Symp. (M. Margoulies, ed.), Part 2, pp. 396-397. Exoerpta Med. Found., Amsterdam, 1968. 

One of the most common home pregnancy tests is an immunoassay that detects the hormone human chorionic gonadotropin (hcG) in urine. HcG is a protein consisting of 244 amino acids in two subunits called a and p. The P subunit is unique to hcG, but the a subunit is found in some other proteins. The hormone begins to be secreted shortly after conception. 

See also follicle-stimulating hormone, human chorionic gonadotrophin, luteinizing hormone... 

Ramirez-Llanelis, R., Llop, E., Ventura, R., et aL (2008) Can glycans unveil the origin of glycoprotein hormones —human chorionic gonadotrophin as an example. Journal of Mass Spectrometry, 43,936-948. 

Chorionic Somatomammotropin. Three genes encode human chorionic somatomammotropin [11085-36-2] (hCS). These are located within a cluster of genes on human chromosome 17 which code for pituitary growth hormone [12629-01 -5] (GH-N), placental GH [109675-94-7J (GH-V), and three hCS molecules, ie, hCS-A, hCS-B, and hCS-V (1 3), also referred to as human placental lactogens. All of these molecules ate closely related to GH in stmcture (Fig. 1). Placental lactogens also exist in rodents and mminants however, these hormones are more closely related to prolactin than GH. 

Periodate Oxidation, Acid Hydrolysis, and Structure-Activity Relationships of Human Pituitary, Follicle-Stimulating Hormone, and Human Chorionic Gonadotrophin, J. F. Kennedy, M. F. Chaplin, and M. Stacey, Carbohydr. Res. 36 (1974) 369-377. 

Adapted, with permission. hCG, human chorionic gonadotropin TSH, thyroid-stimulating hormone. 

Human chorionic gonadotropin A hormone secreted by the placenta that is used to aid in the determination of pregnancy. 

Follicle-stimulating hormone, luteinizing hormone and human chorionic gonadotrophin... 

Rao, C. and Sanfilippo, J. 1997. New understanding in the biochemistry of implantation - potential direct roles of luteinizing hormone and human chorionic gonadotropin. Endocrinologist 7(2), 107-111. 

Morphologically, this is demonstrated by the development of a multinuclear syncytium with apical microvilli [49], while functional differentiation is associated with induction and synthesis of hormones, such as human chorionic gonadotropin (hCG) and human placental lactogen (hPL) [50, 51]. Cultures of primary cytotrophoblasts have been used to study functional expression of P-gp, amino acid uptake, and hormonal stimulation of amino acid uptake and... 

VA) per frog once a day is adequate (Yao et ah, 2000). An additional consideration may be the need to induce ovulation by injection of human chorionic gonadotropin hormone (hCG, see Goldin, 1992). 

Table 1.10. Some pharmaceutical substances originally isolated from animal sources. While some are still produced by direct extraction from the native source, others are now also produced by direct chemical synthesis (e.g. peptides and some steroids), or by recombinant DNA technology (most of the pol5 peptide products). Abbreviations hGH = human growth hormone FSH=follicle stimulating hormone hCG=human chorionic gonadotrophin HSA=human serum albumin HBsAg=hepatitis B surface antigen...

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