PMID- 1818306 OWN - NLM STAT- MEDLINE DCOM- 19920715 LR - 20061115 VI - 33 IP - 6 DP - 1991 TI - Platelet surface glycoprotein changes in patients with cerebral ischemia. PG - 497-9 AB - In vitro abnormalities of platelet behaviour have been described in patients with ischemic cerebrovascular disease (ICD) suggesting that changes in platelet receptors and/or platelet a granules may occur in the circulation. We investigated the frequency of such alterations in 95 patients that were studied within a few days after acute stroke. Using specific antibodies to two intrinsic plasma membrane glycoproteins (GPs), the GPIIb-IIIa complex and GPIV, and to thrombospondin (TSP), a a-granular protein that becomes expressed on the platelet surface upon activation, we were able to distinguish two groups of patients: 16 patients presented an increased concentration of TSP on their platelets demonstrating in vivo platelet secretion. These patients could constitute a group with increased risk of thrombosis. In contrast, 20 patients presented a decreased concentration of GPIIb-IIIa and GPIV. This decrease in intrinsic plasma membrane GPs was associated with a decrease in mean platelet volume and may suggest the occurrence of platelet fragmentation in the circulation. FAU - Legrand, C AU - Legrand C AD - INSERM U 150, Hopital Lariboisiere, Paris, France. FAU - Woimant, F AU - Woimant F FAU - Haguenau, M AU - Haguenau M FAU - Caen, J AU - Caen J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Nouv Rev Fr Hematol (1978) JT - Nouvelle revue francaise d'hematologie JID - 7909092 RN - 0 (Antibodies, Monoclonal) RN - 0 (Platelet Membrane Glycoproteins) SB - IM MH - Acute Disease MH - Adolescent MH - Adult MH - Antibodies, Monoclonal MH - Brain Ischemia/*blood MH - Female MH - Humans MH - Male MH - Middle Aged MH - Platelet Membrane Glycoproteins/*metabolism EDAT- 1991/01/01 00:00 MHDA- 1991/01/01 00:01 CRDT- 1991/01/01 00:00 PHST- 1991/01/01 00:00 [pubmed] PHST- 1991/01/01 00:01 [medline] PHST- 1991/01/01 00:00 [entrez] PST - ppublish SO - Nouv Rev Fr Hematol (1978). 1991;33(6):497-9.