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  • Title: Metabolic effects of radiation induced rat insulinoma at pancreatic, hepatic and subscapular transplantation sites.
    Author: Flatt PR, Bailey CJ, Gray C, Swanston-Flatt SK.
    Journal: Comp Biochem Physiol A Comp Physiol; 1986; 85(1):183-6. PubMed ID: 2876815.
    Abstract:
    Metabolic effects of 3 different sites of transplantation of cultured tumour cells from a radiation induced insulinoma (28 X 10(6) viable cells per rat) were examined in 15-18 weeks old male NEDH rats. Subscapular implantation consistently produced a highly vascularised encapsulated tumour associated with hyperinsulinaemia, hyperphagia and hypoglycaemia by 21 days, which progressed to fatal neuroglycopaenic coma at 37 +/- 3 days (mean +/- SEM). Implantation of tumour cells into the hepatic portal vein resulted in a multilobular hepatic tumour in two out of nine rats, with hyperinsulinaemia and fatal hypoglycaemia by 49-54 days. Irregularities of glucose homeostasis were observed in a further three rats by 62 days. Intrapancreatic implantation consistently produced a similar tumour to that observed at the subscapular site. Implantation into the pancreas produced the most rapid onset of hyperinsulinaemia, hyperphagia and hypoglycaemia, with survival for only 28 +/- 3 days. The results demonstrate an important effect of transplantation site on the function and metabolic consequences of the NEDH rat insulinoma.
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