[Rat kidney mitochondrial damage induced by acute cadmium administration].
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi
; 28(5): 345-9, 2010 May.
Article
en Zh
| MEDLINE
| ID: mdl-20853684
ABSTRACT
OBJECTIVE:
To evaluate effect of acute cadmium administration on mitochondria from rat kidney.METHODS:
24 male Sprague-Dawley (SD) rats were randomly divided into four groups. Four groups of rats were injected with saline, 0.6, 1.2, and 1.8 mg/kg weight subcutaneously, once daily, for 5 days, respectively. Ultrastructural change of rat kidney mitochondria was observed, and respiration function, membrane potential, mitochondria swelling, and superoxide level were determined.RESULTS:
Ultrastructural changes included matrix vacuolation, swelling and condensation of mitochondria. In group of 1.8 mg/kg body weight, the oxygen consumption rate during state 3 respiration [(6.25 +/- 0.61) nmol/L O2 x min(-1) x mg(-1)] and RCR value (2.45 +/- 0.23) were significantly lower than those of control group [(9.66 +/- 1.16) nmol/L O2 x min(-1) x mg(-1)] (P < 0.05), indicating respiration inhibition. The membrane potential and superoxide level of the same group were 85.89% +/- 3.82% and 116.33% +/- 3.06% of control values (P < 0.05), respectively.CONCLUSIONS:
Acute cadmium administration can cause rat kidney mitochondrial damage in a dose-effect manner, including inhibition of respiration, dissipation of membrane potential, swelling of mitochondria matrix. Such damage might be related to the increase of mitochondrial free radical.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Cadmio
/
Mitocondrias
Límite:
Animals
Idioma:
Zh
Revista:
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi
Asunto de la revista:
MEDICINA OCUPACIONAL
Año:
2010
Tipo del documento:
Article
País de afiliación:
China