[Effects of ganoderma lucidum spores on mitochondrial calcium ion and cytochrome C in epididymal cells of type 2 diabetes rats].
OBJECTIVE
To observe the effects of ganoderma lucidum spores (GLS) on mitochondrial calcium ion and cytochrome C in the epididymal cells of type 2 diabetes rats.


METHODS
Fifty adolescent rats were randomly divided into a model group (n=20), a GLS group (n=20) and a control group (n=10). The animals of the former two groups were injected with 2% STZ via vena caudalis for one time to induce type 2 diabetes. Then the model group was given high-fat-sugar diet, the GLS group high-fat-sugar diet + GLS (250 mg/kg x d), and the control group normal diet + CA-citrate sodium buffer. The bilateral epididymides were obtained 10 weeks later and the contents of mitochondrial calcium and cytochrome C detected.


RESULTS
Type 2 diabetes models were successfully constructed. The content of mitochondrial calcium in the epididymal cells was significantly higher in the model group ([3.279 +/- 0.502] mg/L) than in the control group ([2.606 +/- 0.048] mg/L, P < 0.01), with no significant difference between the GLS group ([2.693 +/- 0. 196] mg/L) and the control (P > 0.05). In the model group, the content of mitochondrial cytochrome C ([3.213 +/- 1.511] micromol/L) was significantly lower (P < 0.05) while that of cytoplasm cytochrome C ([2.484 +/- 0.661] micromol/L) significantly higher (P < 0.05) than in the control ([5.688 +/- 1.679] micromol/L and [1.574 +/- 0.329] micromol/L, respectively). In the GLS group, the content of mitochondrial cytochrome C ([5.258 +/- 1.560] micromol/L) was higher, with no significant difference (P > 0.05), and that of cytoplasm cytochrome C ([1.727 +/- 0.396] micromol/L) significantly lower than in the model group (P < 0.05), but the difference between the GLS and the control group was not significant (P > 0.05).


CONCLUSIONS
With disequilibrium of calcium homeostasis and damage to mitochondria, there might be excessive apoptosis in the epididymal cells of type 2 diabetes rats. Ganoderma lucidum spores could protect epididymal cells and counteract their apoptosis in diabetic condition.
Ma
Xiao-ru
XR
Department of Pathophysiology, Basic Medical Science College, Jiamusi University, Jiamusi, Heilongjiang 154007, China.
Zhou
Cheng-fu
CF
Wang
Shu-qiu
SQ
Wang
Wei-qun
WQ
Liu
Yue-xia
YX
Wang
Shu-xiang
SX
Wang
Fang-fang
FF
Zhang
Jian-hua
JH
Li
Yong-yi
YY
D000818:Animals; D002118:Calcium / Q000378:metabolism; D045304:Cytochromes c / Q000378:metabolism; D003921:Diabetes Mellitus, Experimental / Q000628:therapy*; D003924:Diabetes Mellitus, Type 2 / Q000628:therapy*; D004822:Epididymis / Q000166:cytology / Q000473:pathology; D008297:Male; D008928:Mitochondria / Q000737:chemistry; D011897:Random Allocation; D051381:Rats; D017208:Rats, Wistar; D020940:Reishi / Q000502:physiology; D013172:Spores, Fungal
D045304:Cytochromes c; D002118:Calcium