PMID- 7790112 OWN - NLM STAT- MEDLINE DCOM- 19950725 LR - 20190708 IS - 0020-7136 (Print) IS - 0020-7136 (Linking) VI - 61 IP - 6 DP - 1995 Jun 9 TI - Substance-P receptors in human primary neoplasms: tumoral and vascular localization. PG - 786-92 AB - Primary human neoplasms were examined for the presence of substance-P receptors by receptor autoradiography with 125I-labelled Bolton-Hunter substance P. Substance-P receptors were localized and characterized in the neoplastic cells of 9/12 astrocytomas, 10/10 glioblastomas, 10/12 medullary thyroid carcinomas, 8/16 breast carcinomas and 4/5 ganglioneuroblastomas. Conversely, substance-P receptors were not or only rarely identified on non-small-cell carcinomas of the lung (1/16), neuroblastomas (0/8), adenocarcinomas of the colon (1/21) or the pancreas (1/9), or on malignant lymphomas (3/18). However, in the great majority of the investigated tumours, substance-P receptors were found on intra- and peritumoral blood vessels. All substance-P receptors detected had the pharmacological characteristics of the neurokinin-I receptor sub-type. In addition, the expression of somatostatin receptors was examined in all the neoplastic tissues mentioned above. Both substance-P and somatostatin receptors were present in astrocytomas and in ganglioneuroblastomas, whereas little or no receptor was found in pancreatic and non-small-cell lung carcinomas. The extent of somatostatin-receptor expression was inversely correlated to that of the substance-P receptors in glioblastomas, neuroblastomas and non-Hodgkin's lymphomas. The tumoral and vascular localization of substance-P receptors in tumours may have clinical implications. The use of radiolabelled substance P for in vivo scintigraphy may supplement the current set of diagnostic tools. Substance-P antagonists might be used in the treatment of tumours, as their binding to vascular receptors may decrease tumoral blood supply and drainage. FAU - Hennig, I M AU - Hennig IM AD - Division of Cell Biology and Experimental Cancer Research, University of Berne, Switzerland. FAU - Laissue, J A AU - Laissue JA FAU - Horisberger, U AU - Horisberger U FAU - Reubi, J C AU - Reubi JC LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Int J Cancer JT - International journal of cancer JID - 0042124 RN - 0 (Receptors, Neurokinin-1) RN - 0 (Receptors, Somatostatin) SB - IM MH - Autoradiography MH - Blood Vessels/chemistry MH - Humans MH - Neoplasms/blood supply/*chemistry/pathology MH - Radioligand Assay MH - Receptors, Neurokinin-1/*analysis MH - Receptors, Somatostatin/analysis EDAT- 1995/06/09 00:00 MHDA- 1995/06/09 00:01 CRDT- 1995/06/09 00:00 PHST- 1995/06/09 00:00 [pubmed] PHST- 1995/06/09 00:01 [medline] PHST- 1995/06/09 00:00 [entrez] AID - 10.1002/ijc.2910610608 [doi] PST - ppublish SO - Int J Cancer. 1995 Jun 9;61(6):786-92. doi: 10.1002/ijc.2910610608.