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Pentadecapeptide BPC 157 reduces bleedingand thrombocytopenia after amputation in rats treated with heparin, warfarin, L-NAME and L-arginine [Elektronski vir]Stupnišek, Mirjana ...Background BPC 157 is a stable gastric pentadecapeptide recently implicated with a role in hemostasis.While NO is largely implicated in hemostatic mechanisms, in tail-amputation-models underheparin- ... and warfarin-administration, both the NO-synthase (NOS)-blocker, L-NAME (pro-thrombotic) and the NOS-substrate L-arginine (antithrombotic), were little investigated. Objective. To investigate the effect of L-NAME and L-arginine on hemostatic parameters, and to reveal the effects of BPC 157 on the L-NAME- and L-arginine-induced hemostatic actionsunder different pathological condition: tail amputation without or with anticoagulants, hepa-rin or warfarin. MethodsTail amputation, and/or i.v.-heparin (10 mg/kg), i.g.-warfarin (1.5 mg/kg/day for 3 days) wereused in rats. Treatment includes BPC 157, L-NAME, L-arginine, per se and their combination.Results After (tail) amputation, with or without i.v.-heparin or i.g.-warfarin, BPC 157 (10[micro]g/kg, 10 ng/kg, i.p., i.v. (heparin), 10[micro]g/kg i.g. (warfarin)) always reduced bleeding time and/or haemorrhage and counteracted thrombocytopenia. As for L-NAME and/or L-arginine, we noted: L-arginine (100 mg/kg i.p.)-rats: more bleeding, less/no thrombocytopenia; L-NAME (5 mg/kg i.p.)-rats: less bleeding (amputation only), but present thrombocytopenia; L-NAME+L-arginine-rats also exhibited thrombocytopenia: L-NAME counteracted L-arginine-increased bleeding, L-arginine did not counteract L-NAME-thrombocytopenia. All animals receiving BPC 157 inaddition (BPC 157[micro]g+L-NAME; BPC 157[micro]g+L-arginine, BPC 157[micro]g+L-NAME+L-arginine), exhibited decreased haemorrhage and markedly counteracted thrombocytopenia. Conclusions L-NAME (thrombocytopenia), L-arginine (increased haemorrhage) counteraction and BPC157 (decreased haemorrhage, counteracted thrombocytopenia) with rescue against two different anticoagulants, implicate a BPC 157 modulatory and balancing role with rescued NO-hemostatic mechanisms.Source: PloS one [Elektronski vir]. - ISSN 1932-6203 (Vol. 10, iss. 4, Apr. 2015, str. 1-12)Type of material - e-article ; adult, seriousPublish date - 2015Language - englishCOBISS.SI-ID - 34186713
Author
Stupnišek, Mirjana |
Kokot, Antonio, farmacija |
Drmić, Domagoj |
Hrelec Patrlj, Masa |
Zenko Sever, Anita |
Kolenc, Danijela |
Radic, Bozo |
Suran, Jelena |
Bojic, Davor |
Seiwerth, Sven
Topics
pentadecapeptide |
thrombocytopenia |
amputation |
pentadekapeptid |
trombocitopenija |
amputacija
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Stupnišek, Mirjana | ![]() |
Kokot, Antonio, farmacija | ![]() |
Drmić, Domagoj | ![]() |
Hrelec Patrlj, Masa | ![]() |
Zenko Sever, Anita | ![]() |
Kolenc, Danijela | 52857 |
Radic, Bozo | ![]() |
Suran, Jelena | ![]() |
Bojic, Davor | ![]() |
Seiwerth, Sven | ![]() |
Source: Personal bibliographies
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