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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Tissue distribution and plasma clearance of heparin-binding EGF-like growth factor (HB-EGF) in adult and newborn rats.

Heparin-binding EGF-like growth factor (HB-EGF), a member of the epidermal growth factor (EGF) family, can protect intestinal epithelial cells from various forms of injury in vitro and attenuate intestinal ischemia/reperfusion damage in vivo. With the goal of eventual clinical use of HB-EGF to protect the intestines from injury in neonates, children, and adults, the pharmacokinetics and biodistribution of 125I-labeled HB-EGF were investigated. After intravenous bolus, HB-EGF had a distribution half-life of 0.8 min and an elimination half-life of 26.67 min. After gastric administration, the bioavailability was 7.8%, with a 2.38 h half-life in the absorption phase and an 11.13 h half-life in the elimination phase. After intravenous dosing, most radioactivity was found in the plasma, liver, kidneys, bile, and urine, whereas it was mainly distributed in the gastrointestinal tract after intragastric administration. The degradation of 125I-HB-EGF in plasma from newborn rats was lower than that in adult rats after gastric administration. This supports the feasibility of enteral administration of HB-EGF in the treatment of gastrointestinal diseases, including newborns afflicted with necrotizing enterocolitis.[1]


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