PMID- 9072383 OWN - NLM STAT- MEDLINE DCOM- 19970325 LR - 20191101 IS - 0143-9294 (Print) IS - 0143-9294 (Linking) VI - 22 IP - 1 DP - 1995 Dec TI - Increased immunoreactivities for the basic fibroblast growth factor and its receptor in astrocytes at the site of cerebral lesions and oedematous change in SHR. PG - S262-4 AB - 1. To obtain information about changes of basic fibroblast growth factor (bFGF) in the brain in chronic hypertension, we immunohistochemically studied the distribution and level of bFGF and its receptor in the brain of stroke-prone spontaneously hypertensive rats (SHRSP). 2. In the control normotensive rats, immunoreactivity for bFGF was demonstrated in nerve cells, while there was almost no reactivity in astrocytes. 3. In SHRSP, there was a marked immunoreactivity in the densely accumulated reactive cells, particularly astrocytes, in and around cerebral cortical lesions. Slightly increased reaction for bFGF was found in the nerve cells around lesions. Astrocytes in the subcortical white matter on both ipsi- and contralateral sides of the cortical lesion also showed immunoreactivity for bFGF. The location of increased bFGF expression in SHRSP corresponded very well with the site of extravasated plasma fluid demonstrated by anti-fibrinogen antibody. Electron microscopically, bFGF was shown in astrocytes along the rough endoplasmic reticulum suggesting the growth factor to be produced in the cells and not to be taken up from the surroundings. Expression of FGF-receptor was also demonstrated in reactive astrocytes in the oedematous cortical portion around lesion and in the oedematous subcortical white matter. 4. These findings indicate the possibility that oedema and the simultaneously generated free radicals or some extravasated plasma components express bFGF in astrocytes and probably in nerve cells as well as FGF-receptor in astrocytes, and that the thus expressed bFGF and its receptor play some role in the sequence of developmental events of hypertensive cerebral lesions. FAU - Kataoka, H AU - Kataoka H AD - Department of Pathology, Shiga University of Medical Science, Otsu, Japan. FAU - Yamada, E AU - Yamada E FAU - Hayase, Y AU - Hayase Y FAU - Hazama, F AU - Hazama F LA - eng PT - Journal Article PL - Australia TA - Clin Exp Pharmacol Physiol Suppl JT - Clinical and experimental pharmacology & physiology. Supplement JID - 7611484 RN - 0 (Glial Fibrillary Acidic Protein) RN - 0 (Receptors, Fibroblast Growth Factor) RN - 103107-01-3 (Fibroblast Growth Factor 2) SB - IM MH - Animals MH - Astrocytes/*metabolism MH - Brain/*pathology MH - Brain Edema/*pathology MH - Cerebrovascular Disorders/genetics/physiopathology MH - Fibroblast Growth Factor 2/*metabolism MH - Glial Fibrillary Acidic Protein/metabolism MH - Immunohistochemistry MH - Male MH - Rats MH - Rats, Inbred SHR MH - Rats, Inbred WKY MH - Receptors, Fibroblast Growth Factor/*metabolism EDAT- 1995/01/01 00:00 MHDA- 1995/01/01 00:01 CRDT- 1995/01/01 00:00 PHST- 1995/01/01 00:00 [pubmed] PHST- 1995/01/01 00:01 [medline] PHST- 1995/01/01 00:00 [entrez] AID - 10.1111/j.1440-1681.1995.tb02909.x [doi] PST - ppublish SO - Clin Exp Pharmacol Physiol Suppl. 1995 Dec;22(1):S262-4. doi: 10.1111/j.1440-1681.1995.tb02909.x.