CHARACTERISTICS OF HUMAN FETAL HEPATIC RECEPTORS FOR INSULIN (INS) AND SOMATOMEDIN-C (SM-C)
نویسندگان
چکیده
منابع مشابه
Low somatomedin-C (Sm-C) concentrations measured by direct radioimmunoassay in patients with chronic renal failure.
Ten patients suffering from chronic renal failure and undergoing regular hemodialysis were tested immediately before and immediately after a 3-hour dialysis. Serum levels of immunoreactive Sm-C, estimated on unextracted non acidified serum at non equilibrium, were significantly lower than in normal controls and no consistent modifications were observed after dialysis.
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Somatomedin-C (SM-C) is a growth hormone-dependent polypeptide with potent mitogenic activity in vivo and in vitro. In the present study, we show that four human breast cell lines maintained in long-term tissue culture (MCF-7, T47-D, MDA-MB-231, and HBL-100) have type I somatomedin receptors and that SM-C stimulates DNA synthesis in these cells. The concentration of SM-C required for half-maxim...
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To select the best tracer for use in a competitive immunoassay, we conjugated human somatomedin C (SmC) to various chemiluminescent compounds via two different synthetic pathways. Naphthylhydrazides and arylhydrazides, used as the labels, were incorporated via their imidate or their succinimide esters. Conjugating the carboxy terminal of (amino ethyl)ethyl-isoluminol to SmC via a succinimide li...
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The effect of biosynthetic recombinant insulin-like growth factor I/somatomedin C (IGF-I/Sm-C) and human growth hormone (hGH) on the in vitro growth and maturation of human marrow myeloid progenitors was investigated. Myeloid colony formation was maximally enhanced by 60 ng/ml IGF-I/Sm-C and by 250 ng/ml hGH, resulting in an increase in colony numbers of 41 +/- 7 and 38 +/- 4%, respectively (P ...
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In fetal rat liver in utero, an increase in glycogen and the glycogen synthetic enzyme glycogen synthetase (EC 2.4.1.11) occurs between gestational days 17 and 19. We used an organ culture system for finding the stimulus for increased enzyme activity and defining the relationship of this increase to glycogen synthesis. In fetal-liver explants from an earlier period (gestational day 16), hydroco...
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ژورنال
عنوان ژورنال: Pediatric Research
سال: 1984
ISSN: 0031-3998,1530-0447
DOI: 10.1203/00006450-198404001-00259