Abstract
To study the effects of ingestion on antithrombin activities in different tissues of Whitmania pigra, the salivary glands, ingluvies, intestine and muscle of adult leeches were weighted on the 1st d, 3rd d, 5th d, 7th d and 11th d after feeding, respectively, and meanwhile antithrombin activity was measured by antithrombin titration method. The results showed that the antithrombin activity of salivary glands in different stages was significantly higher than that in other tissues (P<0.05). The activity of antithrombin in muscle tissue increased initially and then decreased with the prolongation of the time after feeding, and the peak was observed on the 5th day after feeding (P<0.05). The activity of antithrombin in the salivary glands, gluvies and intestine were found the highest on the 1st day after feeding(P<0.05), and then gradually decreased with the prolongation of the time of stopping the diet. The total amount of antithrombin activity on the 5th day was increased by 49.5%, 73.5%, 69.1% and 126.0% comparing with the 1st, 3rd, 7th and 11th day after feeding, respectively (P<0.05). In summary, both the feeding behavior and the food can induce the secretion of anticoagulant substances in the salivary glands and the digestive tract. The total amount of antithrombin activity was the highest on the 5th day after feeding and the 5th day after feeding was suggested as harvesting time.
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