Immunofunctional assay of human growth hormone (hGH) in serum: a possible consensus for quantitative hGH measurement.

Immunofunctional assay of human growth hormone (hGH) in serum: a possible consensus for quantitative hGH measurement.

Confirmation of the diagnosis of GH deficiency in adults and children involves provocative testing for human (h) GH. Different commercially available immunoassays yield largely discrepant results in the measurement of GH levels in human serum. These discrepancies result in doubtful relevance of cut-off levels proposed for GH provocative testing. We have developed an immunofunctional assay metho...

Antibodies to Human Growth Hormone (hgh) in Human Subjects Treated with Hgh.

Human growth hormone (HGH) (1, 2) has been used experimentally and therapeutically in man since 1957 (3-5). The metabolic and growth-promoting effects of the parenterally administered hormone in humans (3-5) and the antigenicity of various HGH preparations in rabbits and in guinea pigs (6, 7) are well documented. This paper describes the appearance of specific antibodiesto HGH in the plasma of ...

Cloning of Human Growth Hormone (hgh) in Ta Cloning Vector

The 22-KDa is the protein product of human growth hormone (hGH) gene isoform 1 of the pituitary hormone (Ahmed et. al., 1993). hGH gene was amplified with PCR from human growth hormone cDNA clone by specific designed primers containing extraterminals having Nco I and Bam HI restriction sites. The PCR product obtained was analyzed by enzyme digestion and DNA sequencing. The product was cloned in...

Using L-arabinose for Production of Human Growth Hormone in Escherichia coli, Studying the Processing of gIII::hGH Precursor

The 20-kilodalton (kDa) human growth hormone (hGH) differs from the 22-kDa hGH in the complex formation with cell surface hGH receptor and hGH-binding protein circulating in human plasma.

In spite of recent advance in understanding of the stoichiometry of 22-kDa human GH (22K-hGH) with cell surface hGH receptor (hGHR) and hGH-binding protein (hGH-BP) circulating in human plasma, that of 20-kDa hGH (20K-hGH) is poorly understood. To clarify this, mouse pro-B Ba/F3 cells stably expressing the full-length hGHR (Ba/F3-hGHR) and both recombinant and native hGH-BP were used in this st...