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Fa yi xue za zhi 2013-Oct

[Pathological changes in rats with acute Dysosma versipellis poisoning].

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Xiang Xu
Mao-sheng Xu
Jian-hua Zhu
Guang-zhao Huang

キーワード

概要

OBJECTIVE

To observe the pathological changes of major organs in rats with acute Dysosma versipellis poisoning and investigate the toxic mechanism and the injuries of target tissues and organs.

METHODS

Forty Sprague-Dawley (SD) rats were randomly divided into three experimental groups, which were given the gavage with 0.5, 1.0 and 2.0 LDo doses of Dysosma versipellis decoction, and one control group, which was given the gavage with 1.0 LD0 dose of normal saline. The rats were sacrificed 14 days after Dysosma versipellis poisoning and samples including brain, heart, liver, lung, and kidney were taken. After pathological process, the pathological changes of the major organs and tissues were observed by light microscope and electron microscope. The experimental data were statistical analyzed by chi2 test.

RESULTS

The observations of light microscopy: loose cytoplasm of neurons with loss of most Nissl bodies; swelling of myocardial cells with disappearance of intercalated disk and striations; hepatocellular edema with ballooning degeneration; and swelling epithelial cells of renal proximal convoluted tubule with red light coloring protein-like substances in the tube. The observations of electron microscopy: the structures of cell membrane and nuclear membrane of neurons were destroyed; cytoplasm of neurons, obvious edema; and most organelles, destroyed and disappeared. The mortalities of rats after acute poisoning of the four groups increased with doses (P < 0.05).

CONCLUSIONS

Acute Dysosma versipellis poisoning can cause multi-organ pathological changes. There is a positive correlation between the toxic effect and the dosage. The target tissues and organs are brain (neurons), heart, liver and kidney.

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