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    Somat Cell Mol Genet. 1987 Jan;13(1):87-91.

    Human gastrin-releasing peptide gene is located on chromosome 18.

    Naylor SL, Sakaguchi AY, Spindel E, Chin WW.

    Gastrin-releasing peptide (GRP), a bombesin-like peptide, increases plasma levels of gastrin, pancreatic polypeptide, glucagon, gastric inhibitory peptide, and insulin. GRP is produced in large quantities by small-cell lung cancer and acts as a growth factor for these cells. To determine if chromosomal changes in small-cell lung cancer are related to the expression of GRP, we chromosomally mapped the gene using human-mouse somatic cell hybrids. Twenty hybrids, characterized for human chromosomes, were analyzed by Southern filter hybridization of DNA digested with EcoRI. Human DNA cut with EcoRI yields a major band of 6.8 kb and a minor band of 11.3 kb. The 6.8 kb band segregated concordantly with chromosome 18 and the marker peptidase A. The chromosome 3 abnormalities seen in small-cell lung cancer do not correlate with the chromosomal location of GRP, suggesting that the elevated expression of this gene may be due to mechanisms other than chromosomal rearrangement.

    PMID: 3027902 [PubMed - indexed for MEDLINE]

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      Glucagon is a hormone produced in the pancreas. Glucagon is used to raise very low blood sugar. Glucagon is also used in diagnostic testing of the stomach and other digestive organs.

    • Source: AHFS Consumer Medication Information

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