Coagulation abnormalities, including an increased platelet turnover, are frequently found in patients with cancer. Because platelets secrete angiogenic factors on activation, this study tested the hypothesis that platelets contribute to angiogenesis. Stimulation with vascular endothelial growth factor (VEGF, 25 ng/mL) of human umbilical vein endothelial cells (HUVECs) promoted adhesion of nonac...

BACKGROUND There is strong evidence that exercise affects platelet haemostasis factors, but this potential effect on growth factor concentrations in platelet-rich plasma (PRP) has never been studied. In addition, there is a paucity of studies focusing on the effects of activating agents used in conjunction with PRP. The first aim of this study was to evaluate the effect of exercise on platelet ...

background: effects of platelet-derived growth factor b (pdgf-b) on peripheral nerve regeneration was studied using a rat sciatic nerve transection model. materials and methods: forty‑five male, white wistar rats were divided into three experimental groups (n = 15), randomly: normal control group (nc), silicon group (sil), and pdgf‑b treated group (sil/pdgf). in nc group, left sciatic nerve was...

Recognition that the sis gene codes for a protein homologous with at least one of the two chains of platelet-derived growth factor has made it possible to directly assess transcriptional expression of platelet-derived growth factor both in cultured cells and in tissue obtained in vivo. We have found that a 3.7-kilobase RNA homologous to the sis gene is expressed at moderate levels in cultured h...

BACKGROUND Vascular smooth muscle cell proliferation is the key event of coronary artery disease. Mechanical forces, in particular, pulsatile stretch and platelet-derived growth factor, may play an important role. METHODS AND RESULTS Vascular smooth muscle cells were cultured from the media of human left descending coronary arteries obtained from organ donors using the explant method. To stud...

Cell-free plasma-derived serum (PDS) is deficient in the platelet-derived growth factor and will not support the growth of 3T3 cells, fibroblasts, or smooth muscle cells. However, when PDS-containing medium is preincubated with endothelial cells, the medium becomes modified so that it will support growth. The activity produced by the endothelial cells results from a polypeptide of 10,000 to 30,...

introduction intra-articular injections of platelet rich plasma (prp) for the treatment of knee osteoarthritis have been shown to reduce pain and improve joint function. the aim of this study is to examine the joint function by adding intra-articular growth hormone to platelet rich plasma. this study was performed on the individuals with knee osteoarthritis and under ultrasound guidance. conclu...

Abbreviations: 1,2-dimyristyloxypropyl-3-dimethyl-hydroxyl ethyl ammonium bromide, (DMRIE); activation protein-1, (AP-1); Basement membranes, (BM); colony stimulating factor (CSF), dioleoylphosphatidyl ethanolamine, (DOPE); fibroblast growth factor, (FGF); growth hormone, (GH); Hepatocyte growth factor, (HGF); insulin-like growth factor-I, (IGF-I); interleukin-1, (IL-1); interleukin-6, (IL-6); ...

BACKGROUND AND PURPOSE Thrombophilia represents a risk factor both for idiopathic and secondary osteonecrosis (ON). We evaluated whether clotting changes in idiopathic ON were different from corticosteroid-associated ON. As platelet-rich plasma has been proposed as an adjuvant in surgery, we also assessed whether platelet and serum growth factors were similar to those in healthy subjects. MET...

We have examined the phosphorylation and the serine/threonine-specific kinase activity of the protooncogene product Raf-1 (formerly c-raf) in response to oncogenic transformation or growth-factor treatment of mouse 3T3 cells. Expression of the membrane-bound oncogene products encoded by v-fms, v-src, v-sis, polyoma virus middle-sized tumor antigen, and Ha-ras increased the apparent molecular we...