CAJ | 학술논문

目的观察维生素E(VE)对大鼠肾脏缺血再灌注(I/R)的作用.方法 18只健康雄性Wistar大鼠随机分为假手术组、I/R组、VE+ I/R组,每组6只.所有动物于I/R术24h后处死,取肾组织进行光镜检查,留取血清测定尿素氮(BUN)和肌酐(SCr)的浓度.Western印迹测定肿瘤坏死因子α(TNF-α)蛋白的表达.结果 HE、PAS染色结果显示,I/R组肾小管及间质病理损伤显著重于假手术组,VE+ I/R组小管间质损伤程度较肾脏I/R组明显减轻.与假手术组相比,I/R组以及VE+I/R组BUN和SCr均明显升高[BUN:(10.13±2.14)、(7.67±1.63)、(3.85±0.21) mmol/L,SCr:(80.33±7.15)、(63.67±5.40)、(48.67±3.61)μmol/L](P均＜0.05);VE+ I/R组较I/R组BUN和SCr水平显著降低(P均＜0.05).Western Blotting检测显示,VE+ I/R组肾组织TNF-α蛋白表达与I/R组相比显著降低(P＜0.05).结论 VE可能通过抑制TNF-α表达发挥对I/R中肾脏保护作用.
목적 관찰유생소E(VE)대대서신장결혈재관주(I/R)적작용.방법 18지건강웅성Wistar대서수궤분위가수술조、I/R조、VE+ I/R조,매조6지.소유동물우I/R술24h후처사,취신조직진행광경검사,류취혈청측정뇨소담(BUN)화기항(SCr)적농도.Western인적측정종류배사인자α(TNF-α)단백적표체.결과 HE、PAS염색결과현시,I/R조신소관급간질병리손상현저중우가수술조,VE+ I/R조소관간질손상정도교신장I/R조명현감경.여가수술조상비,I/R조이급VE+I/R조BUN화SCr균명현승고[BUN:(10.13±2.14)、(7.67±1.63)、(3.85±0.21) mmol/L,SCr:(80.33±7.15)、(63.67±5.40)、(48.67±3.61)μmol/L](P균＜0.05);VE+ I/R조교I/R조BUN화SCr수평현저강저(P균＜0.05).Western Blotting검측현시,VE+ I/R조신조직TNF-α단백표체여I/R조상비현저강저(P＜0.05).결론 VE가능통과억제TNF-α표체발휘대I/R중신장보호작용.
Objective To investigate the effects of vitamin E (VE) on renal ischemia/reperfusion (I/R) injury of rats.Methods A total of 18 male Wistar rats were randomly divided into sham-operated group,I/R group,VE + I/R group,and each group of 6 rats.All the animals were killed at the end of 24 h of reperfusion.Nephridial tissue were examined by light microscopy,and the level of blood urea nitrogen(BUN) and serum creatinine (SCr) were measured.The protein expressions of tumor necrosis factor α (TNF-α) were detected by Western blotting.Results Compared with sham-operated group,tubulointerstitial pathological injury in I/R group was significantly aggravated,which was shown by HE and PAS stain.Compared with I/R group,the degree of morphological changes as well as renal dysfunction in VE + I/R group were obviously lessened.Meanwhile,the levels of BUN,SCr in I/R group,VE + I/R group were (10.13 ± 2.14) mmol/L and (7.67 ± 1.63) mmol/L,(80.33 ±7.15) μmol/L and (63.67 ±5.40) μ mol/L,significantly higher than those in shamed-operated group ((3.85 ± 0.21) mmol/L,(48.67 ± 3.61) μmol/L;P ＜ 0.05).And the level of BUN and SCr in VE + I/R group were significant lower than those in I/R group(P ＜0.05).Western Blotting showed that the protein expressions of TNF-α in VE + I/R group were obviously lower compared with those in group of I/R without VE treatment (P ＜ 0.05).Conclusion Vitamin E can attenuate over-expressions of TNF-α in kidney following I/R,thus protect against structural damages and renal dysfunction in I/R rat models.