期刊
FOOD AND CHEMICAL TOXICOLOGY
卷 56, 期 -, 页码 459-466出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fct.2013.02.030
关键词
Lymphocytes; Platelets; Ectonucleotidases; Caffeic acid; Platelet aggregation
资金
- CNPq/TWAS
- FAPERGS
- CAPES
- Federal University of Santa Maria and FINEP - IBNET
- INCT for Excitotoxicity and Neuroprotection
This study evaluated the effects of caffeic acid on ectonucleotidase activities such as NTPDase (nucleoside triphosphate diphosphohydrolase), Ecto-NPP (nucleotide pyrophosphatase/phosphodiesterase), 5'-nucleotidase and adenosine deaminase (ADA) in platelets and lymphocytes of rats, as well as in the profile of platelet aggregation. Animals were divided into five groups: I (control); II (oil); III (caffeic acid 10 mg/kg); IV (caffeic acid 50 mg/kg); and V (caffeic acid 100 mg/kg). Animals were treated with caffeic acid diluted in oil for 30 days. In platelets, caffeic acid decreased the ATP hydrolysis and increased ADP hydrolysis in groups III, IV and V when compared to control (P < 0.05). The 5'-nucleotidase activity was decreased, while E-NPP and ADA activities were increased in platelets of rats of groups III, IV and V (P < 0.05). Caffeic acid reduced significantly the platelet aggregation in the animals of groups III, IV and V in relation to group I (P < 0.05). In lymphocytes, the NTPDase and ADA activities were increased in all groups treated with caffeic acid when compared to control (P < 0.05). These findings demonstrated that the enzymes were altered in tissues by caffeic acid and this compound decreased the platelet aggregation suggesting that caffeic acid should be considered a potentially therapeutic agent in disorders related to the purinergic system. (C) 2013 Elsevier Ltd. All rights reserved.
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