白藜芦醇调控癫痫持续状态大鼠大脑皮质内源性巯醇抗氧化剂(酶)的作用研究

目的:探讨白藜芦醇(resveratrol,Res)在氯化锂(LiCl)-重复低剂量匹罗卡品(pilocarpine,Pilo)诱导癫痫持续状态(status epilepticus,SE)大鼠模型中的抗氧化作用及其机制。方法:54只SD大鼠随机分为3组:对照组、癫痫模型组和Res治疗组。采用重复低剂量氯化锂-联合皮罗卡品腹腔注射制备癫痫持续状态SD大鼠模型,并同时给予Res预防性治疗,对实验动物按痫性分级标准进行行为学观测,采用化学比色法检测痫性发作90min后模型动物大脑皮质过氧化氢酶(catalase,CAT)、谷胱甘肽(glutathion,GSH)、超氧化物歧化酶(superoxidedismutase,SOD)和谷胱甘肽还原酶(glutathion reductase,GR)含量变化。采用免疫组织化学法和免疫印迹法(Western blot)检测痫性发作90 min后模型动物大脑皮质中凋亡相关蛋白Bcl-2、Caspase-3和Bax的表达变化。结果:癫痫大鼠大脑皮质CAT、GR、SOD和GSH的含量较对照组显著减少(P<0.05),凋亡相关蛋白Bcl-2表达下调,该蛋白阳性细胞数减少,而caspase-3和Bax表达显著上调(P<0.05),两种蛋白阳性细胞数增多(P<0.05);Res预防性治疗后,治疗组动物痫性发作潜伏期较模型组显著延长(P<0.05);药物治疗明显上调模型动物大脑皮质中巯醇抗氧化剂(酶)CAT、GR、SOD和GSH的含量(P<0.05),增加抗凋亡蛋白Bcl-2表达(P<0.05)和阳性细胞数(P<0.05),同时抑制促凋亡因子Caspase-3和Bax的表达(P<0.05)和减少两种蛋白阳性细胞数(P<0.05)。结论:Res能通过上调癫痫模型大鼠皮质内源性巯基抗氧化物(酶)CAT、GR、SOD和GSH的含量,调控凋亡相关蛋白Bcl-2、caspase-3和Bax的表达变化,对抗SE诱导的神经细胞氧化损伤,发挥神经保护作用。     

17-β雌二醇提高巯醇抗氧化物(酶)治疗脊髓损伤的作用

目的探讨17-β雌二醇治疗脊髓损伤的分子机制,为临床应用雌激素治疗脊髓损伤提供理论依据。方法成年雄性SD大鼠180只,采用改良的Allen法构建大鼠急性脊髓挫伤模型后经17-β雌二醇治疗,采用化学比色法测定脊髓组织中丙二醛(MDA)和内源性巯醇抗氧化物(酶):还原型谷胱甘肽(GSH)、超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)含量;免疫组织化学分析凋亡相关因子Caspase-3、Bcl-2和Bax蛋白的表达变化。结果17-β雌二醇治疗组与脊髓损伤组比较,BBB评分明显增加;在多个时间点MDA含量明显降低;巯醇抗氧化物(酶)GSH、SOD和GSH-Px含量显著增加;Caspase-3和Bax表达的阳性细胞数明显减少;Bcl-2表达的阳性细胞数明显增加(P0.05)。结论大剂量的17-β雌二醇治疗可能通过调控内源性巯醇抗氧化物(酶),提高肢体运动功能,抑制细胞凋亡,从而减轻脊髓损伤程度。     

17-β雌二醇提高巯醇抗氧化物（酶）治疗脊髓损伤的作用 

目的 探讨17-β雌二醇治疗脊髓损伤的分子机制,为临床应用雌激素治疗脊髓损伤提供理论依据。 方法 成年雄性SD大鼠180只,采用改良的Allen法构建大鼠急性脊髓挫伤模型后经17-β雌二醇治疗,采用化学比色法测定脊髓组织中丙二醛（MDA）和内源性巯醇抗氧化物（酶）：还原型谷胱甘肽（GSH）、超氧化物歧化酶（SOD）和谷胱甘肽过氧化物酶（GSH-Px）含量;免疫组织化学分析凋亡相关因子Caspase-3、Bcl2和Bax蛋白的表达变化。 结果 17-β雌二醇治疗组与脊髓损伤组比较,BBB评分明显增加;在多个时间点MDA含量明显降低;巯醇抗氧化物（酶）GSH、SOD和GSH-Px含量显著增加;Caspase-3和Bax表达的阳性细胞数明显减少;Bcl2表达的阳性细胞数明显增加（P<0.05）。 结论 大剂量的17-β雌二醇治疗可能通过调控内源性巯醇抗氧化物（酶）,提高肢体运动功能,抑制细胞凋亡,从而减轻脊髓损伤程度。     

三七皂苷Rg1上调SD大鼠大脑皮质巯醇抗氧化物(酶)发挥抗衰老作用

目的探讨三七皂苷Rg1抗衰老的分子机制。方法90只SD大鼠随机分为假手术组、模型组和治疗组。采用侧脑室注射β淀粉样蛋白1-42(Aβ1-42)联合腹腔注射D-半乳糖(D-gal)构建SD大鼠衰老模型,并同时给予三七皂苷Rg1预防性治疗,采用Morris水迷宫实验(MWM)进行行为学检测,用化学比色法检测大脑皮质谷胱甘肽还原酶(GR)和谷胱甘肽过氧化物酶(GSH-Px)的含量。用免疫组织化学法和免疫印迹法检测大脑皮质中Caspase-3前体蛋白和Bcl-2的含量。结果衰老模型组与假手术组比较:逃避潜伏期明显延长(P0.05),在第Ⅲ象限逗留的时间明显减少(P0.05),跨越平台次数明显减少(P0.05),皮质GR和GSH-Px的含量降低(P0.05),Caspase-3前体蛋白阳性神经元数明显减少(P0.05),Caspase-3前体蛋白活化切割增加(P0.05);而三七皂苷Rg1治疗后:大鼠逃避潜伏期明显缩短(P0.05),在第Ⅲ象限逗留的时间明显增加(P0.05),跨越平台次数明显增加(P0.05),皮质GR和GSH-Px的含量升高(P0.05),Caspase-3前体蛋白阳性神经元数明显增加(P0.05),Caspase-3前体蛋白活化切割减少(P0.05)。而Bcl-2阳性神经元数及表达在3组之间没有显著差异(P0.05)。结论三七皂苷Rg1能通过上调衰老模型大鼠皮质内源性巯基抗氧化物(酶)GR和GSH-Px的含量,抑制凋亡相关蛋白Caspase-3前体蛋白的活化切割而改善学习记忆能力,对抗大鼠神经系统衰老。     

托吡酯对癫痫持续状态大鼠海马神经元损伤的保护作用

为探讨托吡酯(topiramate,TPM)对癫痫持续状态(status epilepticus,SE)大鼠海马神经元损伤的保护作用,将大鼠随机分为正常对照组、海人酸(kanic acid,KA)组和TPM预处理组,观察海马神经元超微结构和bcl-2表达的变化。先将TPM组大鼠用TPM预处理,然后采用KA(10mg/kg)腹膜腔注射制作SE模型,在痫性发作终止后6、24和48h取海马进行研究。结果显示:KA组神经元呈凋亡特征;TPM组神经元结构大致正常,但出现核仁边聚和细胞器增多现象,亦观察到少量凋亡神经元。KA组于SE后6h观察到bcl-2表达增高,与对照组相比差异显著,(P<0.05);24h时开始减弱,48h仅有微弱表达;TPM组在24h时bcl-2呈强表达(P<0.001),并持续至48h。以上结果提示:托吡酯预处理能减轻癫痫大鼠神经元的损伤,其机制可能与上调bcl-2的表达有关。     

P> 三七皂苷Rg1上调SD大鼠大脑皮质巯醇抗氧化物（酶）发挥抗衰老作用/P>

目的 探讨三七皂苷Rg1抗衰老的分子机制。 方法 90只SD大鼠随机分为假手术组、模型组和治疗组。采用侧脑室注射β淀粉样蛋白1-42（Aβ_1-42）联合腹腔注射D半乳糖（D-gal）构建SD大鼠衰老模型,并同时给予三七皂苷Rg1预防性治疗,采用Morris水迷宫实验（MWM）进行行为学检测,用化学比色法检测大脑皮质谷胱甘肽还原酶(GR)和谷胱甘肽过氧化物酶(GSH-Px)的含量。用免疫组织化学法和免疫印迹法检测大脑皮质中Caspase-3前体蛋白和Bcl-2的含量。 结果 衰老模型组与假手术组比较：逃避潜伏期明显延长(P<0.05),在第Ⅲ象限逗留的时间明显减少(P<0.05),跨越平台次数明显减少(P<0.05),皮质GR和GSH-Px的含量降低(P<0.05),Caspase-3前体蛋白阳性神经元数明显减少(P<0.05),Caspase-3前体蛋白活化切割增加(P<0.05);而三七皂苷Rg1治疗后：大鼠逃避潜伏期明显缩短(P<0.05),在第Ⅲ象限逗留的时间明显增加(P<0.05),跨越平台次数明显增加(P<0.05),皮质GR 和GSH-Px的含量升高(P<0.05),Caspase-3前体蛋白阳性神经元数明显增加(P<0.05),Caspase-3前体蛋白活化切割减少(P<0.05)。而Bcl-2阳性神经元数及表达在3组之间没有显著差异(P>0.05)。 结论 三七皂苷Rg1能通过上调衰老模型大鼠皮质内源性巯基抗氧化物（酶）GR 和GSH-Px的含量,抑制凋亡相关蛋白Caspase-3前体蛋白的活化切割而改善学习记忆能力,对抗大鼠神经系统衰老。     

外源性硫化氢保护实验性癫痫持续状态大鼠海马神经元作用的研究

目的:为研究外源性硫化氢(H_2S)对实验性癫痫持续状态(status of epilepticus,SE)大鼠海马神经元的保护作用,我们用供体Na HS对氯化锂-匹罗卡品所致幼鼠SE海马神经元的影响,并对SE引起的脑损伤进行靶点干预。方法:用氯化锂-匹罗卡品建立大鼠SE模型,并分为正常+Na HS组,癫痫组,癫痫+Na HS组和癫痫+羟胺组,另设正常组(对照组),每组6只。用比色法测定血浆和海马H_2S浓度,用Real-Time PCR检测海马胱硫醚-β合酶(CBS)基因mRNA表达,用HE染色和Nissl染色观察海马神经元形态。结果:癫痫组血浆和海马组织H_2S浓度和CBS mRNA表达明显低于正常组(P0.01),癫痫+Na HS组血浆和海马组织H_2S浓度和CBS mRNA表达明显高于癫痫组(P0.01),癫痫+羟胺组血浆和海马组织H_2S浓度和CBS mRNA表达显著低于癫痫组(P0.05)。HE染色显示,癫痫组海马CA3区锥体细胞明显减少,细胞层次紊乱,形态不规则;尼氏染色显示,癫痫组海马CA3区尼氏体明显减少,锥体细胞排列紊乱;与癫痫组比较,癫痫+Na HS组海马尼氏体缺失和锥体细胞排列紊乱明显改善。结论:外源性H_2S对实验性癫痫持续状态大鼠海马组织CBS mRNA表达具有上调作用,并提高血浆和海马组织H_2S含量。同时,外源性H_2S对实验性癫痫大鼠海马组织神经元具有保护作用。     

癫痫持续状态大鼠海马Bim与Caspase-3的表达

目的:探讨在匹罗卡品致痫的癫痫持续状态(Status epilepticus,SE)大鼠模型中,Bcl-2-相互作用细胞死亡介导因子(Bim)与Caspase-3在大鼠海马组织中的表达。方法:雄性成年Sprague-Dawley(SD)大鼠,应用匹罗卡品产生SE 60 min后终止发作,24 h后取材,行HE染色及TUNEL染色,观察海马神经元的损伤及凋亡情况,Western Blot测定海马组织中Bim的表达,免疫组化检测Caspase-3的表达。采用Pearson相关分析法分析Bim与Caspase-3表达的相关性。结果:SE后24 h,海马组织HE染色见神经元数量减少,TUNEL染色阳性细胞数明显增加,Western Blot中Bim出现相对分子量26kD的条带,免疫组化染色可见大量Caspase-3阳性神经元。结论:大鼠SE后24 h,Bim与Caspase-3在海马组织神经元表达增加,且二者的表达呈正相关(r=0.901,P=0.001),海马神经元出现凋亡。     

D-半乳糖调控SD大鼠大脑皮质巯醇抗氧化物(酶)致衰老的作用研究

构建D-半乳糖(D-gal)致衰老模型,探讨D-gal诱导衰老的分子机制,为临床治疗阿尔茨海默病(AD)提供理论依据。腹腔注射D-gal构建SD大鼠衰老模型,采用Morris水迷宫实验(MWM)进行行为学检测,采用化学比色法检测大脑皮质一氧化氮合酶(NOS)、一氧化氮(NO)、铜锌-过氧化物岐化酶(Cu,Zn-SOD)、总超氧化物歧化酶(T-SOD)、谷胱甘肽还原酶(GR)、谷胱甘肽s-转移酶(GSH-ST)、谷胱甘肽过氧化酶(GSH-PX)、谷胱甘肽(GSH)、丙二醛(MDA),总抗氧化能力(T-AOC)和过氧化氢(H2O2)的含量。结果显示:衰老模型组与正常对照组比较:逃避潜伏期明显延长(P<0.05),在第III象限逗留的时间明显减少(P<0.05),跨越平台次数明显减少(P<0.05);皮质MDA、H2O2和NO的含量增加(P<0.05),SOD、GSH、GSH-ST、GSH-Px和T-AOC的含量降低(P<0.05),而NOS的含量没有明显变化(P>0.05)。结果提示,D-gal能通过调控内源性巯基抗氧化物(酶)和NO的表达,减退学习记忆能力,而诱导SD大鼠神经系统的衰老。     

白藜芦醇对胰岛素抵抗模型中同型半胱氨酸代谢关键酶的调控

目的 探讨在胰岛素抵抗动物模型中白藜芦醇（RES）对同型半胱氨酸(Hcy)代谢关键酶调控的分子机制。方法 6周健康SD大鼠利用高脂高糖饮食加高脂灌胃3个月制造胰岛素抵抗模型。确定胰岛素抵抗模型建立成功后,随机分为胰岛素抵抗组和白藜芦醇干预组,每组10只。胰岛素抵抗组继续高脂高糖饮食,白藜芦醇干预组高脂高糖饮食加30mg/(kg·d)白藜芦醇灌胃。8周后,空腹状态下测定每组体重和血浆中Hcy、葡萄糖(GLU)、胰岛素(INS)、甘油三酯(TG)和总胆固醇(TC)的浓度,计算胰岛素抵抗指数（IRI）;免疫组织化学、RT-PCR和Western blotting检测肝脏组织亚甲基四氢叶酸还原酶（MTHFR）、胱硫醚合成酶（CBS）、蛋氨酸合成酶（MTR)表达的变化。 结果 白藜芦醇干预组和胰岛素抵抗组比较,空腹GLU、INS、TG的浓度降低（P<0.05）, IRI降低（P<0.05）,Hcy浓度降低（P<0.05）,体重和TC差异无统计学意义（P>0.05）。MTHFR和CBS的mRNA及蛋白表达水平升高（P<0.05）,MTR的mRNA及蛋白表达差异无统计学意义（P>0.05）。 结论 胰岛素抵抗条件下,白藜芦醇可能通过上调MTHFR和CBS的表达,促进同型半胱氨酸的转化,可能在减轻胰岛素抵抗中具有关键的作用。     

Cellular hybridization for BDNF. trkB, and NGF mRNAs and BDNF-immunoreactivity in rat forebrain after pilocarpine-induced status epilepticus

The messenger RNAs (mRNAs) for the neurotrophins, brain-derived neurotrophic factor (BDNF), and nerve growth factor (NGF), are upregulated during epileptic seizure activity, as visualized by in situ hybridization techniques. Neurotrophins might be protective against excitotoxic cell stress, and the upregulation during seizures might provide such cell protection. In this study, a high dose of pilocarpine (300 mg/kg) was used to induce long-lasting, limbic motor status epilepticus and a selective pattern of brain damage. The regulation of BDNF, trkB, and NGF mRNA was studied by in situ hybridization at 1, 3, 6, and 24 h after induction of limbic motor status epilepticus. BDNF immunoreactivity was examined with an anti-peptide antibody and the neuropathological process studied in parallel. BDNF mRNA increased in hippocampus, neocortex, piriform cortex, striatum, and thalamus with a maximum at 3–6 h. Hybridization levels increased earlier in the resistant granule and CA1 cells as compared to the vulnerable CA3 neurons. BDNF immunoreactivity was elevated in dentate gyrus at 3–6 h. trKB mRNA increased in the entire hippocampus. NGF mRNA in hippocampus appeared in dentate gyrus at 3–6 h and declined in hilar neurons at 6–24 h. Cell damage was found in the CA3 area, entire basal cortex, and layers II/III of neocortex. Endogenous neurotrophins are upregulated during status epilepticus caused by pilocarpine, which is related to the coupling between neuronal excitation and trophic factor expression. This upregulation of neurotrophic factors may serve endogenous protective effects; however, the excessive levels of neuronal hyperexcitation resulting from pilocarpine seizures lead to cell damage which cannot be prevented by endogenous neurotrophins.     

Suppression of pilocarpine-induced status epilepticus and the late development of epilepsy in rats

Status epilepticus (SE) has been related to subsequent development of epilepsy. The present work was aimed at elucidating the relationship between the duration of pilocarpine- (PILO)-induced SE and the subsequent development of epilepsy in rats. The latency for the appearance of the first spontaneous seizure, the frequency of spontaneous seizures, the cell density in the hippocampal formation and the density of supragranular neo-Timmstaining were monitored. At 30 min, 1, 2 and 6 h after the beginning of SE, animals were treated with diazepam plus pentobarbital. In non-treated rats, SE remitted spontaneously. Animals exhibiting 30 min of PILO-induced SE did not develop spontaneous seizures. Hippocampal cell counts and the density of neo-Timm staining in these animals were similar to those observed in control rats. In the other groups longer SE durations were related to: shorter latency for the appearance of the first spontaneous seizure, increased number of the spontaneous recurrent seizures, severe cell loss in the hippocampal formation, or increased supragranular neo-Timm staining. These data suggest that more than 30 min of SE is required to produce hippocampal damage with subsequent synaptic reorganization of the mossy fibre pathway that could account for SRSs observed in the PILO model of epilepsy.     

Damage of substantia nigra pars reticulata during pilocarpine-induced status epilepticus in the rat: immunohistochemical study of neurons,astrocytes and serum-protein extravasation

Summary The substantia nigra has a gating function controlling the spread of epileptic seizure activity. Additionally, in models of prolonged status epilepticus the pars reticulata of substantia nigra (SNR) suffers from a massive lesion which may arise from a massive metabolic derangement and hyperexcitation developing in the activated SNR. In this study, status epilepticus was induced by systemic injection of pilocarpine in rats. The neuropathology of SNR was investigated using immunohistochemical techniques with the major emphasis on the time-course of changes in neurons and astrocytes. Animals surviving 20, 30, 40, 60 min, 2, 3, 6 hours, 1, 2, and 3 days after induction of status epilepticus were perfusion-fixed, and brains processed for immunohistochemical staining of SNR. Nissl-staining and antibodies against the neuron-specific calcium-binding protein, parvalbumin, served to detect neuronal damage in SNR. Antibodies against the astroglia-specific cytoskeletal protein, glial fibrillary acidic protein (GFAP), and against the glial calcium-binding protein, S-100 protein, were used to assess the status of astrocytes. Immunohistochemical staining for serum-albumin and immunoglobulins in brain tissue was taken as indicator of blood-brain barrier disturbances and vasogenic edema formation. Immunohistochemical staining indicated loss of GFAP-staining already at 30 min after induction of seizures in an oval focus situated in the center of SNR while sparing medial and lateral aspects. At 1 h there was additional vacuolation in S-100 protein staining. By 2 hours, parvalbumin-staining changed in the central SNR indicating neuronal damage, and Nissl-staining visualized some neuronal distortion. Staining for serum-proteins occurred in a patchy manner throughout the forebrain during the first hours. By 6 h, vasogenic edema covered the lesioned SNR. By 24 h, glial and neuronal markers indicated a massive lesion in the center of SNR. By 48–72 h, astrocytes surrounding the lesion increased in size, and polymorphic phagocytotic cells invaded the damaged area. In a further group of animals surviving 1 to 5 days, conventional paraffin-sections confirmed the neuronal and glial damage of SNR. Additional pathology of similar quality was found in the globus pallidus. Since astrocytes were always damaged in parallel with neurons in SNR it is proposed that the anatomical and functional interrelationship between neurons and astrocytes is particularly tight in SNR. Both cell elements may suffer in common from metabolic disturbance and neurotransmitter dysfunction as occur during massive status epilepticus.     

Elevated cerebral blood flow and vascular density in the amygdala after status epilepticus in rats

Cerebrovascular changes following status epilepticus (SE) are not well understood, yet they may contribute to epileptogenesis. We studied hemodynamic changes in the cerebral cortex and amygdala by arterial spin labeling (ASL) and dynamic susceptibility contrast (DSC) MRI at 2 days and 14 days after pilocarpine-induced SE in rats. There were no cortical hemodynamic changes, yet in the amygdala we found prolonged elevation in cerebral blood flow (CBF, 129% of control mean, day 14, p < 0.01). There was a trend towards increased cerebral blood volume (CBV) during the same imaging sessions. Through immunohistochemistry, we observed increased vessel density in the amygdala (127% of control mean, day 14, p < 0.05). In conclusion, epileptogenesis may involve hemodynamic changes that are associated with vascular reorganization during post-SE remodeling in the amygdaloid complex.     

Age-dependent mortality in the pilocarpine model of status epilepticus

Status epilepticus (SE) is an acute neurological emergency associated with significant morbidity and mortality. Age has been shown to be a critical factor in determining outcome after SE. Understanding the causes of this increased mortality with aging by developing an animal model to study this condition would play a major role in studying mechanisms to limit the mortality due to SE. Here we employed pilocarpine to induce SE in rats aged between 5 and 28 weeks. Similar to clinical studies in man, we observed that age was a significant predictor of mortality following SE. While no deaths were observed in 5-week-old animals, mortality due to SE increased progressively with age and reached 90% in 28-week-old animals. There was no correlation between the age of animals and severity of SE. With increasing age mortality occurred earlier after the onset of SE. These results indicate that pilocarpine-induced SE in the rat provides a useful model to study age-dependent SE-induced mortality and indicates the importance of using animal models to elucidate the mechanisms contributing to SE-induced mortality and the development of novel therapeutic interventions to prevent SE-induced death.     

Up-regulation of parvalbumin expression in newborn and adult rat heart

Parvalbumin (PV), a cytoplasmic calcium-binding protein, functions as a relaxing factor and has recently been detected in rat heart. Developmental changes in PV localization and expression were investigated in the heart of Wistar rats at different ages. Ten hearts from newborn, 3-month-old (young), 6-month-old (young adult), and 12-month-old (adult) rats were processed for immunohistochemistry and Western blot assay. PV was detected in hearts of all the age groups of the rats from newborn to 12-month-old by both immunohistochemistry and Western blotting. A variable distribution of PV immunoreactivity was present in newborn cardiac myocytes. In the 3-, 6-, and 12-month-old rat hearts, identical PV immunoreactivity was found in all cardiac myocytes and the intensity of PV immunoreactivity increased with increasing age. By using Western blotting, it was found that the expression of PV was low in the newborn rat heart and increased with increasing age. The presence of PV may correlate with the physiological age, and possibly serves to maintain proper relaxation of the cardiac myocytes to cope with an increasing workload of the heart during body growth.     

贵州某白酒对大鼠睾丸间质细胞内类固醇激素急性调节蛋白表达及血清睾酮水平的影响

目的探讨摄入贵州某54°白酒后,不同时程及不同剂量对大鼠睾丸间质细胞内类固醇激素急性调节蛋白(St AR)表达及血清睾酮水平的变化,以期为科学饮酒提供基础资料。方法正常成年雄性SD大鼠69只,随机分为正常对照组(n=15)及实验组(n=54)。实验组分为低剂量组0.8ml/(kg·d)、中剂量组1.6ml/(kg·d)及高剂量组2.4ml/(kg·d),实验组大鼠每日灌胃2次。分别于第4周末、第8周末、第12周末采血清,取睾丸组织。采用免疫组织化学SABC法、图像分析、Western blotting检测睾丸组织St AR的表达,采用化学发光法检测大鼠血清睾酮水平。结果各实验组的血清睾酮水平与正常对照组比较未见明显异常,差异无统计学意义(P0.05)。St AR免疫组织化学阳性产物存在于睾丸间质细胞胞质内;与正常对照组比较,4周、8周、12周各剂量组St AR免疫染色及平均吸光度均有所增强(P0.05);Western blotting检测,4周、8周、12周各剂量组St AR蛋白表达水平增强(P0.05)。结论在本实验设定的剂量和时程内用该白酒灌胃后,大鼠睾丸间质细胞内St AR表达水平有所增强,血清睾酮水平并无明显变化。