Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0012739 (disseminated intravascular coagulation)
 8,673 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Green pit viper (Trimeresurus albolabris) is the most common venomous snake responsible for bites in Bangkok. It causes local edema and systemic hypofibrinogenemia resulted from the thrombin-like, as well as the fibrinolytic effects of the venom. However, the amino acid sequences of these venom proteins have never been reported. In this study, we have cloned five novel serine proteases from the Thai T. albolabris venom gland cDNA library. They were all closely homologous to the corresponding serine proteases from Chinese green viper (Trimeresurus stejnegeri), suggesting the evolutionary proximity of the two species. In addition, their functional activities could be deduced. There were predicted to be two thrombin-like enzymes (GPV-TL1 and GPV-TL-2), two isoforms of a fibrinogenolytic enzyme (albofibrase) and a plasminogen activator (GPV-PA), suggesting that defibrination syndrome in patients is a combination of these enzymatic effects. By multiple sequence alignment, no conserved residue or motif responsible for distinct functions of snake venom serine proteases could be observed. Moreover, one Lys 49 and one Asn 49 phospholipase A2 (PLA2) genes were cloned. Lys 49 PLA2 was predicted to devoid of catalytic activity, but showed a carboxy terminal cytotoxic region. No Asp 49 PLA2 was found in 150 clones screened. This explains the marked limb edema but no hemolysis in patients. These novel serine proteases have potentials to be therapeutic anti-thrombotic and thrombolytic agents in the future.
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PMID:Molecular cloning of novel serine proteases and phospholipases A2 from green pit viper (Trimeresurus albolabris) venom gland cDNA library. 1637 75

Thrombocytopenia frequently appear in severe malaria. The reasons of low blood platelets count are different and its results of hypersplenism, subclinical course of intravascular coagulation (DIC). Thrombocytopenia from "consumption" is consequence of sequestration of blood platelets in blood vessels of lungs and cerebral. We examination 29 years old men, who was as forest worker in islands on Indonesia. He was treated with recurrent, poliethiological malaria (Plasmodium falciparum, Plasmodium vivar) and severe thrombocytopenia (17.0 G/L) without hepatosplenomegalia. Antiplatelet antibody was examined in blood serum by ELISA methods (GTI - PAKPLUS. In blood serum was detected IgG antibody agai nstglicoprotein receptors on surface of blood platelets GPIIb/IIIa, GPIV, GPIb/IX, GPV, GPIa/IIa. Chronic infections of Plasmodium may conduct to autoimmune destruction of blood platelets.
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PMID:[Autoimmune thrombocytopenia in recurrent polietiological malaria (Plasmodium falciparum, Plasmodium vivax)]. 1688 56