[Changes of subcellular calcium in hypo-themal-preserved cat kidney cortex cells detected by X-ray microanalysis of microsections].
It was pointed out by many researches that keeping the concentration of Ca2+ in cells could increase the survival rate of hypothermic preserved kidneys and the survival rate of transplants. In this study, changes of the concentration of calcium were detected within catoplasm, mitochondria, endoplasmic reticulum and nucleus in the isolated hypothermic storage cat kidney, Ca2+ be marked with calcium cytochemical probe (K2H2Sb2O7) and detected by X-ray microanalysis of microsections. After 24, 48 and 72 hours preservation, the p/b (peak/back) of calcium within cytoplasm and mitochondria increased significantly. There were no obvious changes within endoplasmic reticulum and nucleus. It demonstrates that the Ca2+ were released from calcium pool (except the endoplasmic reticulum, nucleus, mitochondria etc.) to cytoplasm during preservation; and mitochondria can uptake calcium from cytoplasm to some extent, while the calcium concentration of cytoplasm is higher than normal.
Yin
Shengyong
S
Department of Biological Science and Technology, Zhejiang University, Hangzhou 310027.
Ge
Jiguang
J
Lin
Zhifu
Z
D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002415:Cats; D015925:Cryopreservation; D005260:Female; D066298:In Vitro Techniques; D007672:Kidney Cortex / Q000166:cytology* / Q000378:metabolism; D008297:Male; D013052:Spectrometry, X-Ray Emission; D013997:Time Factors
D002118:Calcium