Identification of insulin and insulin-like growth factor I (IGF I) receptors in ovarian cancer tissue.
The objective of this study was to test if specific insulin and insulin-like growth factor I (IGF I) receptors are expressed in ovarian cancer tissue. Thirteen tissue specimens from primary ovarian cancers, 1 specimen from a primary peritoneal carcinoma, 10 specimens from metastatic lesions of ovarian carcinomas, and 4 specimens from recurrent ovarian cancers together with 13 normal ovaries were tested for their content of insulin and IGF-I receptors, by the application of specific insulin and IGF-I receptor radioimmunoassays. The insulin receptor (IR) and IGF-I receptor (IGF R) content in the primary tumors varied between 23.8-321.4 and 16.4-554.2 ng/0.1 mg DNA, respectively. Metastatic lesions contained between 12.3 and 226.7 ng IR/0.1 mg DNA and between 7.5 and 459.4 ng IGF R/0.1 mg DNA. In recurrent tumors the receptor concentrations were in the range of 41.5-79.8 and 48.9-160.9 ng/0.1 mg DNA for insulin and IGF-I receptors, respectively. Normal ovarian tissue contained between 12.2 and 150.1 ng IR and between 21.4 and 420.1 ng IGF R per 0.1 mg DNA, respectively. As both insulin and IGF-I receptors are present in ovarian cancer tissue, the effects of insulin and IGF-I as potential growth factors in ovarian cancer should be further investigated.
Beck
E P
EP
Department of Obstetrics & Gynecology, University of Erlangen-Nuremberg, Germany.
Russo
P
P
Gliozzo
B
B
Jaeger
W
W
Papa
V
V
Wildt
L
L
Pezzino
V
V
Lang
N
N
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000737:chemistry*; D010053:Ovary / Q000737:chemistry; D011863:Radioimmunoassay; D017526:Receptor, IGF Type 1 / Q000032:analysis*; D011972:Receptor, Insulin / Q000032:analysis*; D012016:Reference Values
D017526:Receptor, IGF Type 1; D011972:Receptor, Insulin