Thromb Haemost 1985; 54(04): 739-743
DOI: 10.1055/s-0038-1660122
Original Article
Schattauer GmbH Stuttgart

Platelet Suruival and Function in Rats with Enhanced Thrombotic Tendency

Federica Delaini
The Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy
,
Elisabetta Dejana
The Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy
,
Ine Reyers
The Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy
,
Elisa Vicenzi
The Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy
,
Germana De Bellis Vitti
The Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy
,
Andreina Poggi
The Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy
,
Maria Benedetta Donati
The Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy
› Author Affiliations
Further Information

Publication History

Received 28 May 1985

Accepted 02 July 1985

Publication Date:
26 July 2018 (online)

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Summary

We have investigated the relevance of some laboratory tests of platelet function in predicting conditions of thrombotic tendency. For this purpose, we studied platelet survival, platelet aggregation in response to different stimuli, TxB2 and 6-keto-PGFlα production in serum of rats bearing a nephrotic syndrome induced by adriamycin. These animals show a heavy predisposition to the development of both arterial and venous thrombosis. The mean survival time was normal in nephrotic rats in comparison to controls. As to aggregation tests, a lower aggregating response was found in ADR-treated rats using ADP or collagen as stimulating agents. With arachidonic acid (AA) we observed similar aggregating responses at lower A A concentrations, whereas at higher AA concentrations a significantly lower response was found in nephrotic rats, despite their higher TxB2 production. Also TxB2 and 6-keto-PGFlα levels in serum of nephrotic rats were significantly higher than in controls. No consistent differences were found in PGI2-activity generated by vessels of control or nephrotic rats.

These data show that platelet function may appear normal or even impaired in rats with a markedly increased thrombotic tendency. On the other hand, the significance of high TxB2 levels in connection with mechanisms leading to thrombus formation remains a controversial issue.