Somatasensory evoked potentials (SEP), sciatic nerve conduction velocity (CV), sciatic nerve Na+-K+-ATPase activity, and lipid peroxide content (LPO) were determined in 8 rats with chronic renal failure induced with 5...Somatasensory evoked potentials (SEP), sciatic nerve conduction velocity (CV), sciatic nerve Na+-K+-ATPase activity, and lipid peroxide content (LPO) were determined in 8 rats with chronic renal failure induced with 5/6 nephrectomy. Meanwhile, the histological changes were also oserved. Ten rats wtih sham operation served as the control. It was found that in the group with chronic renal failure, the mean peak latency of SEP was significantly prolonged and CV slower than those of the control. In the sciatic nerve tissue, Na+-K+-ATPase activity was loyer and LPO content higher in the tested group than in the control. No significant histological changes of the sciatic nerve were found under optical microscope. These findings suggest that the decrease of nerve conductivity after chronic renal failure might result from the insufficient activity of Na+-K+-ATPase and enhanced generation of free oxygen radicals.展开更多
The correlation of oxygen free radical items between blood and kidney of 5/6 nephrectomy-induced chronic renal failure rats was studied. It was found that oxygen free radicals played an important role in the impairmen...The correlation of oxygen free radical items between blood and kidney of 5/6 nephrectomy-induced chronic renal failure rats was studied. It was found that oxygen free radicals played an important role in the impairment of remnant kidney,and antioxidant vitamin E could protect remnant kidney from the impairment caused by oxygen free radicals,and that,both in normal and chronic renal failure conditions,plasma lipid peroxides and vitamin E concentration and superoxide dismutase activity of red blood cells correlated very well with corresponding items of remnant kidney.These results suggested that blood oxygen free radical items could reflect renal oxygen free radical metabolic status in chronic renal failure patients.展开更多
文摘Somatasensory evoked potentials (SEP), sciatic nerve conduction velocity (CV), sciatic nerve Na+-K+-ATPase activity, and lipid peroxide content (LPO) were determined in 8 rats with chronic renal failure induced with 5/6 nephrectomy. Meanwhile, the histological changes were also oserved. Ten rats wtih sham operation served as the control. It was found that in the group with chronic renal failure, the mean peak latency of SEP was significantly prolonged and CV slower than those of the control. In the sciatic nerve tissue, Na+-K+-ATPase activity was loyer and LPO content higher in the tested group than in the control. No significant histological changes of the sciatic nerve were found under optical microscope. These findings suggest that the decrease of nerve conductivity after chronic renal failure might result from the insufficient activity of Na+-K+-ATPase and enhanced generation of free oxygen radicals.
文摘The correlation of oxygen free radical items between blood and kidney of 5/6 nephrectomy-induced chronic renal failure rats was studied. It was found that oxygen free radicals played an important role in the impairment of remnant kidney,and antioxidant vitamin E could protect remnant kidney from the impairment caused by oxygen free radicals,and that,both in normal and chronic renal failure conditions,plasma lipid peroxides and vitamin E concentration and superoxide dismutase activity of red blood cells correlated very well with corresponding items of remnant kidney.These results suggested that blood oxygen free radical items could reflect renal oxygen free radical metabolic status in chronic renal failure patients.