We characterised IGFI and IGFII receptors and located them in bovine muscle during foetal growth. Semitendinosus muscle samples were taken from foetuses ranging from 80 to 270 days post-conception. The relative affinities of 125I-IGFII and 125I-IGFI mark the presence of typical type II and type I receptors in foetal muscle membranes. IGFII-specific binding is consistently five times greater tha...

PURPOSE The endothelins are a family of structurally similar vasoactive peptides. It has been shown recently that cultured retinal microvascular endothelial cells secrete endothelin-1 (ET-1) and that corresponding pericytes bear receptors and are responsive to this peptide. These findings suggest a role for ET-1 in the autoregulation of retinal blood flow. There are at least two known subtypes ...

Insulin-like growth factors (IGFs) and insulin are known to be mitogenic to a variety of cell types, although a growth-regulatory role of IGFs on human breast cancer cells has not yet been fully investigated. In the present study, we examined the receptor binding and the effect on growth of IGFs and insulin in a human breast cancer cell line (T-47D). Specific binding of 125I-basic somatomedin (...

PURPOSE This study sought to identify and characterize subtypes of alpha 2-adrenoceptors in rabbit ciliary body. METHODS Radioligand binding assays were performed with the alpha 2-agonist ligand [125I]-p-iodoclonidine ([125I]PIC) and the antagonist ligand [3H]rauwolscine. RESULTS Both [125I]PIC and [3H]rauwolscine bound to a single population of receptors in membrane preparations of rabbit ...

L-cell colony-stimulating factor (CSF) is identical to macrophage growth factor and stimulates macrophage proliferation (Stanley et al., 1976, J. Exp. Med. 143: 631-647). The nature of the interaction of iodinated L-cell CSF (125I-CSF) with murine peritoneal exudate macrophages was studied. On incubation with 10 pM 125I-CSF at 0 degrees C, cellular binding of 125I-CSF reaches a stable maximum w...

© Translational Andrology and Urology. All rights reserved. Transl Androl Urol, 2017;6(S3) tau.amegroups.com amount of 125I, reaction time, pH, and reaction volume on the labeling rate of the 125I-RSOAds-hTERT/PSA oncolytic adenovirus marker were measured. Radioactive oncolytic adenoviruses were isolated and purified by column chromatography; the radiochemical purities of the 125I-RSOAds-hTERT/...

Neuropeptide Y (NPY) receptor binding sites have been localized in the rat brain by in vitro autoradiography using picomolar concentrations of both 125I-NPY and 125I-peptide YY (PYY) and new evidence provided for differentially localized receptor subtypes. Equilibrium binding studies using membranes indicate that rat brain contains a small population of high-affinity binding sites and a large p...

Endothelial dysfunction, or activation, elicited by oxidized low density lipoprotein (Ox-LDL) and its lipid constituents has been shown to play a key role in the pathogenesis of atherosclerosis. We recently have identified a novel receptor for Ox-LDL-designated lectin-like Ox-LDL receptor (LOX-1) in vascular endothelial cells. To examine ligand specificity of LOX-1, we established CHO cell line...

The present study aimed to evaluate the effects of iodine‑125 (125I) seeds on the proliferation of primary esophageal fibroblasts in dogs, and to assess the safety and preventive efficacy of 125I seed‑pre‑loaded esophageal stents in benign restenosis following implantation. Primary fibroblasts were cultured with various 125I seed activities, which were then evaluated using cell proliferation an...