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1.
目的探讨小檗碱对病毒性心肌炎小鼠的保护作用,并研究其对Toll样受体4(TLR4)、核因子κB(NF-κB)和肿瘤坏死因子α(TNF-α)的影响。方法将40只BALB/c小鼠按数字随机法均分为正常组、模型组、小檗碱低剂量组与高剂量组。除正常组外,其余组小鼠腹腔注射嗜心性柯萨奇病毒B3,建立病毒性心肌炎模型。小檗碱低剂量组与高剂量组分别腹腔注射小檗碱50 mg/kg与100 mg/kg。苏木素-伊红染色观察心肌组织病理学变化;用酶联免疫吸附测定试剂盒检测血清肌酸激酶同工酶(CK-MB)、心肌肌钙蛋白(cTnT)和TNF-α水平;免疫印迹法和实时荧光定量PCR分别检测心肌组织中TLR4与NF-κB的蛋白表达和mRNA表达。结果与模型组相比,小檗碱治疗组心肌组织的炎性细胞浸润与心肌细胞坏死程度显著减轻,血清CK-MB、cTnT和TNF-α水平明显降低,心肌组织TLR4与NF-κB的蛋白表达和mRNA表达显著下调。结论小檗碱可通过调控TLR4/NF-κB信号通路,从而对病毒性心肌炎小鼠的心肌组织具有保护作用。  相似文献   

2.
目的探讨低剂量长期砷暴露对人皮肤角质形成细胞系(HaCat)细胞蛋白激酶B(PKB/Akt)及其下游信号因子IKK、IκB和NF-κB的影响。方法将HaCat细胞暴露于浓度为0、0.05、0.10μmol/L的NaAsO215周后,采用Western Blot法检测细胞磷酸化Akt(p-Akt)、磷酸化IKK(p-IKK)和磷酸化IκB(p-IκB)及胞核和胞浆中核转录因子NF-κB的蛋白表达水平。结果 0.05、0.10μmol/L染砷组细胞内p-Akt、p-IKK、p-IκB及胞核NF-κB蛋白表达水平与对照组相比均显著增高(P〈0.05);胞浆NF-κB蛋白表达水平与对照组相比均显著降低(P〈0.05)。结论长期低剂量砷暴露可诱导HaCat细胞Akt蛋白磷酸化活化,激活其下游信号因子IKK,进而诱导IκB的磷酸化及核转录因子NF-κB的入核表达。  相似文献   

3.
目的 探讨单核细胞趋化蛋白1在病毒性心肌炎中的作用及黄芪甲甙干预后的变化.方法 55只雄性Bal/c小鼠随机分为正常对照组(n=10)、模型对照组(n=15)、低剂量干预组(n=15)及高剂量干预组(n=15),后3组小鼠经腹腔接种0.1mL柯萨奇病毒B3建立病毒性心肌炎模型,低剂量干预组和高剂量干预组于病毒接种后当天分别以0.01g/L、0.09g/L黄芪甲甙0.1mL灌胃,正常对照组和模型对照组均以羧甲基纤维素钠溶液灌胃,第15天处死全部存活小鼠,心脏石蜡切片HE染色计算病理积分,免疫组织化学染色检测单核细胞趋化蛋白1蛋白表达,逆转录-聚合酶链反应检测单核细胞趋化蛋白1mRNA表达.结果 正常对照组、模型对照组、低剂量干预组及高剂量干预组死亡率分别为0、46.7%、40.0%、13.3.0%,高剂量干预组死亡率明显低于模型对照组和低剂量干预组(P<0.05).模型对照组心肌单核细胞趋化蛋白1mRNA及蛋白表达水平均明显高于正常对照组(P<0.01),高剂量干预组病理积分及单核细胞趋化蛋白1mRNA、蛋白表达量较模型对照组、低剂量干预组显著降低(P<0.05或0.01).结论 单核细胞趋化蛋白1参与病毒性心肌炎发病过程,黄芪甲甙对病毒性心肌炎的治疗作用可能与其抑制单核细胞趋化蛋白1表达有关.  相似文献   

4.
[目的]探讨萎胃颗粒对慢性萎缩性胃炎(CAG)大鼠核因子(NF)-κB及其内源性抑制因子(IκBα)表达的影响,进一步明确其作用机制.[方法]采用综合法复制大鼠CAG模型,造模成功后随机分为正常组、模型组及萎胃颗粒低、中、高剂量组,每组10只,观察萎胃颗粒对CAG大鼠胃黏膜NF-κB和IκBa表达的影响.[结果]NF-κB蛋白NF-κBOD值正常组为0.116±0.033,模型组0.183±0.035,萎胃颗粒低剂量组0.158±0.031,中剂量组0.144±0.039,高剂量组0.126±0.036.与模型组比较,萎胃颗粒各治疗组NF-κBOD值均有明显下降(P<0.01),且这种作用呈剂量依赖性:低剂量组>中剂量组>高剂量组,3组比较差异有统计学意义(P<0.01).IκBα蛋白OD值正常组为4.25±1.02,模型组为2.08±0.74,萎胃颗粒低剂量组2.77±0.78,中剂量组3.46±0.84,高剂量组4.12±0.96.与模型组比较,萎胃颗粒各治疗组IκBαOD值均有明显的升高(P<0.01),且这种作用呈剂量依赖性:低剂量组<中剂量组<高剂量组,3组比较差异有统计学意义(P<0.01).[结论]萎胃颗粒可能通过增加CAG大鼠胃黏膜IκBα的表达,促进IκBα与NF-κB结合,进而抑制NF-κB的活化,降低胃黏膜炎症程度,从而有效抑制胃黏膜的增生,避免CAG进一步向胃癌转化.  相似文献   

5.
目的探讨川芎嗪对急性百草枯中毒大鼠肾损伤时核因子-κB(NF-κB)和诱导型一氧化氮合酶(iNOS)活性的影响。方法将50只SD大鼠随机分成空白组、阴性对照组、阳性对照组、川芎嗪低剂量组和川芎嗪高剂量组,对肾组织标本进行组织病理学检查,同时测定肾组织NF-κB和iNOS活性。结果与阴性对照组相比,川芎嗪低剂量组肾组织病理显示肾间质充血明显减轻,NF—κB和iNOS也降低(P〈0.01);而川芎嗪高剂量组无明显改善。结论NF-κB及iNOS在百草枯所致大鼠肾损伤中起重要作用,川芎嗪能降低肾组织NF-κB及iNOS水平,减轻百草枯中毒大鼠的肾组织损伤。  相似文献   

6.
目的观察银杏叶提取物(GBE)对高胆固醇饲料喂养大鼠NF-κB表达的影响,阐明其防治动脉粥样硬化的机制。方法 SD大鼠24只随机分为高脂组、对照组、GBE低剂量组(80mg/d)、GBE高剂量组(120mg/d)。l2周后取血标本、主动脉标本,行组织形态学检查了解动脉粥样硬化情况,检测肿瘤坏死因子(TNF-α)、白介素-1(IL-1)的含量及血管内膜细胞间黏附分子-1(ICAM-1)、核因子κB(NF-κB)表达阳性率。结果 GBE组的胆固醇(TC)、三酰甘油(TG)和低密度脂蛋白胆固醇(LDL-C)水平均低于高脂组(P〈0.05),且GBE高剂量组TG、LDL-C水平低于GBE低剂量组(P〈0.05)。高脂组的血管内皮细胞存在明显的崩解现象,可见斑块形成,而GBE组损伤轻微。与对照组比较,高脂组主动脉内膜ICAM-1、NF-κB表达阳性率、血清TNF-α、IL-1水平均显著升高,GBE组明显低于高脂组(P〈0.05),且高剂量组优于低剂量组。结论 GBE可以通过调节血脂、抑制NF-κB表达,减轻动脉粥样斑块局部的炎症反应、保护血管内皮细胞而发挥防治动脉粥样硬化的作用。  相似文献   

7.
目的 研究苦瓜蛋白对载脂蛋白E基因敲除(ApoE-/-)小鼠炎症因子核因子κB(NF-κB)蛋白核转位的影响,探讨苦瓜蛋白抗炎的分子机制.方法 40只6周龄雄性ApoE-/-小鼠,随机分为普食组、高脂高胆固醇组、高脂高胆固醇苦瓜蛋白组、普食苦瓜蛋白组.12周后眼球采血,ELISA测定血浆中炎性因子NF-κB、白细胞介素1β(IL-1β)、肿瘤坏死因子α(TNF-α)、IL-6和γ干扰素(IFN-γ)及抗炎因子IL-10的水平,免疫组织化学检测主动脉壁IκB表达,RT-PCR和Western blot检测NF-κB和IκB表达.结果 ApoE-/-小鼠经高脂高胆固醇饲料喂养12周后,血液中炎症因子NF-κB、IL-1β、TNF-α、IL-6、IFN-γ水平均显著高于普食组(P<0.01,n=5),但抗炎因子IL-10仍维持较高水平.经苦瓜蛋白干预后,血清中炎症因子水平下降,而抗炎因子IL-10水平并不上升.RT-PCR以及Western blot检测结果表明,苦瓜蛋白显著降低高脂高胆固醇饲料喂养小鼠动脉血管壁细胞核内NF-κB蛋白水平,阻止其核转位.与普食组比较,高脂高胆固醇组IκB被显著降解(0.19±0.05比0.74 +0.15,P<0.05,n=5),但其经苦瓜蛋白干预后,这种降解作用得到显著的抑制(0.19±0.05比0.36±0.07,P<0.01,n=5).结论 苦瓜蛋白通过减少IκB降解抑制NF-κB蛋白核转位而发挥抑制炎性因子生成的作用.  相似文献   

8.
目的探讨蛋白激酶C抑制剂对核因子-κB在实验性家兔脑血管痉挛中表达变化的影响机制及对脑血管痉挛的防治作用。方法中国白兔60只,体重1.5~2k,其中45只经枕大池2次(间隔72h)注入自体动脉血(1ml/kg)制成脑血管痉挛模型,再随机分为4组:(1)单纯2次注血组(15只);(2)给药组(15只),动物每次经枕大池注血前注射蛋白激酶抑制剂等渗盐水稀释液O.1m1,剂量为100μg/kg;(3)等渗盐水组(15只),每次经枕大池注血前注射等量等渗盐水代替蛋白激酶抑制剂;(4)假穿刺组(15只)。于第4、7、10天将动物分批处死,取基底动脉进行形态学观察,应用免疫组化、蛋白印迹及电泳迁移率改变分析等方法检测核因子-κB、κB抑制蛋白活性表达变化,评价不同剂量蛋白激酶抑制剂对其影响程度。结果单纯2次注血组家兔较假穿刺组在4~10d基底动脉出现明显管腔狭窄、炎性浸润等改变,7d时最明显;核因子-κB的活性于4~10d也明显增高,与炎性变化一致;抑制蛋白κB表达下降,与核因子-κB呈负相关。给药组家兔与单纯注血组相比,基底动脉痉挛程度和炎性浸润明显减轻,抑制蛋白κB表达明显上升,核因子-κB活性下降,而等渗盐水组较单纯注血组则无明显差异。结论蛋白激酶抑制剂不仅能够显著减轻脑血管痉挛的程度,而且可减轻其管壁炎性浸润程度,其作用可能是通过抑制κB抑制蛋白的磷酸化作用减弱核因子-κB的表达来实现的。  相似文献   

9.
目的 观察降糖舒心方灌胃对大鼠糖尿病心力衰竭(DHF)的治疗作用,并探讨其机制。方法 将50只SD大鼠随机分为5组各10只,低剂量组、高剂量组、西药组、模型组制备DHF模型,对照组不制备DHF模型。低剂量组灌胃给予1.0 g/(kg·d)的降糖舒心方混悬液,高剂量组灌胃给予1.5 g/(kg·d)的降糖舒心方混悬液,西药组灌胃给予格列喹酮和贝那普利,均连续灌胃2个月,高脂饲料喂养;对照组给予普通饲料喂养。比较各组大鼠空腹血糖(FBG)及血清甘油三脂(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、C反应蛋白(CRP)、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、肌酸激酶同工酶(CK-MB)、乳酸脱氢酶(LDH)和心肌组织病理形态、NF-κB p65蛋白、IκBα蛋白。结果 与对照组比较,其余4组大鼠FBG及血清TG、LDL-C、CRP、IL-6、TNF-α、CK-MB、LDH水平升高,血清HDL-C水平下降,心肌组织损伤严重,NF-κB p65蛋白表达升高,IκBα蛋白表达下降(P均<0.05)。与模型组比较,低剂量组、高剂量组、西药组...  相似文献   

10.
目的:观察曲美他嗪对M株柯萨奇病毒B3(CVB3m)感染的病毒性心肌炎小鼠的保护作用并探讨其可能作用机制。方法:以CVB3m诱导的病毒性心肌炎Balb/c小鼠模型为研究对象。201只清洁级近交系4~6周龄雄性Balb/c小鼠随机分成5组。正常对照小鼠20只(正常组);病毒性心肌炎小鼠55只(心肌炎组);喂养曲美他嗪10 mg/(kg.d)的正常小鼠20只(药物对照组);喂养曲美他嗪10 mg/(kg.d)的病毒性心肌炎小鼠53只(低剂量治疗组);喂养曲美他嗪20 mg/(kg.d)的病毒性心肌炎小鼠53只(高剂量治疗组)。观察各组血清中肌钙蛋白I(cTnI)水平、血清中超氧化物歧化酶(SOD)、丙二醛(MDA)含量的变化以及心肌组织中Fas mRNA表达水平的变化。结果:小鼠感染CVB3m后第7天及第14天,与正常组及药物对照组比较,心肌炎组、低剂量治疗组和高剂量治疗组血清cTnI水平、MDA含量显著升高,SOD含量显著降低,Fas mRNA的表达显著增加,差异有统计学意义(P<0.05)。小鼠感染CVB3m后第7天,与心肌炎组比较,低剂量治疗组和高剂量治疗组血清cTnI水平显著降低,MDA含量显著降低,差异有统计学意义(P<0.05),与心肌炎组及低剂量组比较,高剂量治疗组SOD含量显著升高,Fas mRNA的表达显著减少,差异有统计学意义(P<0.05)。感染CVB3m后第14天,与心肌炎组比较,低剂量治疗组和高剂量治疗组血清cTnI水平、MDA含量显著降低,SOD含量显著升高,Fas mRNA的表达显著减少,差异有统计学意义(P<0.05),与低剂量治疗组比较,高剂量治疗组上述指标变化更明显,差异有统计学意义(P<0.05)。结论:曲美他嗪能够减少病毒性心肌炎中心肌细胞的损害。其机制可能与其抗氧化作用以及通过下调Fas mRNA水平抑制心肌细胞凋亡有关。  相似文献   

11.
Most adenomas and carcinomas of the small intestine and extrahepatic bile ducts arise in the region of the papilla of Vater. In familial adenomatous polyposis (FAP) it is the main location for carcinomas after proctocolectomy. In many cases symptoms due to stenosis lead to diagnosis at an early tumor stage. In about 80%, curative intended resection is possible. Operability is the most relevant prognostic factor. Most ampullary carcinomas resp. carcinomas of the papilla of Vater develop from adenomatous or flat dysplastic precursor lesions. They can be sited in the ampulloduodenal part of the papilla of Vater, which is lined by intestinal mucosa. They also can develop in deeper parts of the ampulla, which are lined by pancreaticobiliary duct mucosa. Intestinal-type adenocarcinoma and pancreaticobiliary-type adenocarcinoma represent the main histological types of ampullary carcinoma. Furthermore, there exist unusual types and undifferentiated carcinomas. Many carcinomas of intestinal type express the immunohistochemical marker profile of intestinal mucosa (keratin 7?, keratin 20+, MUC2+). Carcinomas of pancreaticobiliary type usually show the immunohistochemical profile of pancreaticobiliary duct mucosa (keratin 7+, keratin 20?, MUC2?). Even poorly differentiated carcinomas, as well as unusual histological types, may conserve the marker profile of the mucosa they developed from. These findings underline the concept of histogenetically different carcinomas of the papilla of Vater which develop either from intestinal- or from pancreaticobiliary-type mucosa of the papilla of Vater. Molecular alterations in ampullary carcinomas are similar to those of colorectal as well as pancreatic carcinomas, although they appear at different frequencies. In future studies, molecular alterations in ampullary carcinomas should be correlated closely with the different histologic tumor types. Consequently, the histologic classification should reflect the histogenesis of ampullary tumors from the two different types of papillary mucosa.  相似文献   

12.
目的胰岛素瘤是最常见的胰腺神经内分泌肿瘤,因其临床表现多样,导致诊断困难。影像学诊断尤其是超声内镜(EUS)在胰岛素瘤的诊断中起着重要作用,拥有较高的敏感性和特异性。本研究拟通过明确胰岛素瘤的解剖分布特点,以期有助于提高影像学的诊断准确率和降低漏诊率,尤其是在教育和培训实践中对于EUS的学习者更具有指导价值。 方法回顾性分析解放军总医院第一医学中心病案资料数据库1993年1月至2019年11月经外科手术、病理确诊为胰岛素瘤的患者的临床资料,检索方法采取搜索术后病理诊断为"胰岛素瘤"的病例,通过查阅病例的方法,提取出胰岛素瘤的大小和解剖分布等数据,进一步分析其特点。 结果共检索到确诊为胰岛素瘤的患者116例,其中,男45例、女71例,年龄13~76岁,平均年龄(44.4±14.85)岁。胰岛素瘤单发110例(94.8%)、多发6例(5.2%)。位置分布:头颈部46例(39.7%),单发45例、多发1例;体尾部68例(58.6%),单发65例、多发3例;全胰腺多发2例(1.7%)。病变大小特点:最大径0.4~3.4 cm,平均大小(1.53±0.58)cm。≤1 cm 29例、>1 cm而≤1.5 cm41例、>1.5 cm而≤2.0 cm28例,≤3 cm 15例,>3 cm 3例。年龄与肿瘤的大小相关,≤44岁患者肿瘤平均大小为(1.36±0.51)cm、>44岁患者肿瘤平均大小为(1.70±0.60)cm,P<0.05。头颈部的肿瘤大于体尾部的肿瘤,头颈部肿瘤平均大小(1.66±0.63)cm,体尾部(1.42±0.52)cm,P<0.05。 结论胰岛素瘤在胰腺体尾部较头颈部更好发;绝大多数单发,但可以全胰腺多发;多数小于1.5 cm,肿瘤的大小与患者年龄和肿瘤的解剖分布相关。  相似文献   

13.
Summary Palmitic acid oxidation in rat diaphragm homogenate is depressed by biguanide concentrations that are still incapable of inhibiting oxidative phosphorylation. Glucose oxidation is not directly effected by the same biguanide concentrations: however, the inhibitory effect of palmitic acid on glucose oxidation is partly removed by biguanides. Inhibition of fatty acid oxidation, which accounts for most of the metabolic effects caused by these drugs, can be regarded as the fundamental mechanism of action of biguanides. There is some evidence suggesting that these drugs might interact with carnitine, thus preventing long-chain fatty acids from being transported across the mitochondrial membrane to the site of oxidation. Traduzione a cura degli AA.  相似文献   

14.
BACKGROUND AND AIM: Both the clinical presentation and the degree of mucosal damage in coeliac disease vary greatly. In view of conflicting information as to whether the mode of presentation correlates with the degree of villous atrophy, we reviewed a large cohort of patients with coeliac disease. PATIENTS AND METHODS: We correlated mode of presentation (classical, diarrhoea predominant or atypical/silent) with histology of duodenal biopsies and examined their trends over time. RESULTS: The cohort consisted of 499 adults, mean age 44.1 years, 68% females. The majority had silent coeliac disease (56%) and total villous atrophy (65%). There was no correlation of mode of presentation with the degree of villous atrophy (p=0.25). Sixty-eight percent of females and 58% of males had a severe villous atrophy (p=0.052). There was a significant trend over time for a greater proportion of patients presenting as atypical/silent coeliac disease and having partial villous atrophy, though the majority still had total villous atrophy. CONCLUSIONS: Among our patients the degree of villous atrophy in duodenal biopsies did not correlate with the mode of presentation, indicating that factors other than the degree of villous atrophy must account for diarrhoea in coeliac disease.  相似文献   

15.
氯硝柳胺悬浮剂的毒性评价   总被引:4,自引:2,他引:2  
目的评价氯硝柳胺悬浮剂的毒性,为现场大规模应用灭螺提供依据。方法按照中华人民共和国国家标准GB 15670-1995《农药登记毒理学试验方法》和鱼类毒性试验方法进行。结果经口、经皮肤的LDso雌、雄性大鼠均>5 000 mg/kg,经呼吸道的LCso雌、雄性大鼠均>5 000mg/m3,该药经口、经皮肤、经呼吸道毒性均属微毒类药物;兔眼用药后,观察期内无不良反应,对眼无刺激性;皮肤用药后对皮肤无刺激性。与氯硝柳胺原药、氯硝柳胺乙醇胺盐原药和氯硝柳胺乙醇胺盐可湿性粉剂相比,氯硝柳胺悬浮剂对鱼急性毒性最低。结论氯硝柳胺悬浮剂属微毒类药物,对鱼的毒性低于其乙醇胺盐可湿性粉剂,适合于现场应用。  相似文献   

16.
17.
血吸虫童虫是宿主免疫系统攻击的重要靶标,包括皮肤型、肺型和肝门型童虫。宿主分子对童虫生长发育具有重要作用。童虫生长发育机制包括免疫调节、信号转导、性别发育及凋亡等。肌动蛋白、组织蛋白酶、烯醇化酶和葡萄糖基转移酶等分子为血吸虫童虫生长发育的重要分子。本文对血吸虫童虫生长发育及其机制的研究进展做一综述。  相似文献   

18.
The aim of the study was to assess the quality of life (QOL) and the psychological status of parents of children with juvenile chronic arthritis (JCA). The QOL, anxiety and depression of the parents of 28 children with JCA were evaluated and compared to those of the parents of 28 healthy children. Mothers of JCA children and mothers of healthy children reported similar QOL. The reported anxiety and depression levels were similar for mothers and fathers in both groups. The parents of children with pauciarticular-type JCA reported lower QOL and higher levels of anxiety and depression than the parents of children with other types, namely polyarticular and systemic JCA. These findings may be explained by the fact that the pauciarticular patients had shorter disease duration and were less frequently seen in the outpatient clinic. The QOL of mothers of children with JCA was found to be slightly impaired in the group of children with pauciarticular JCA. Future larger studies are needed to confirm these results, as the number of subjects in the three groups was rather low. Received: 26 September 2001 / Accepted: 8 February 2002  相似文献   

19.
G. Rock 《Vox sanguinis》2011,100(2):169-178
Introduction Current methods for pathogen inactivation of plasma involve four major processes using solvent–detergent (SD), methylene blue (MB), amotosalen and riboflavin as additives. Three of these methods involve the use of visible or ultraviolet light. Methods A comparison of the four methods was made using publications in Medline, Pubmed, Embase and Biosis to obtain data on the logistics of use, the quality of the plasma proteins and the effectiveness of pathogen inactivation. Results Three of the methods, MB, amotosalen and riboflavin, are designed for use in a blood bank; the SD method is generally applied at a centralized manufacturing centre and involves large plasma pools. All methods result in a reduction in protein values with the per cent retention of FVIII activity in the range of 67–78% and fibrinogen of 65–84%. Protein S and alpha2‐antiplasmin are lower following solvent–detergent treatment. Alterations in fibrinogen structure have been reported with methylene blue. Discussion Three of the methods are designed for small volume use in a blood bank. All four methods have some effect on the coagulant proteins; however, the final concentrations are within regulated limits. While there is variability in the effectiveness against pathogens, direct comparison is difficult because of the methodologies used. Nonetheless, all are effective in inactivating HIV and other lipid‐enveloped pathogens. Clinical studies on the effectiveness of these products are surprisingly sparse, and no randomized clinical trials have yet been performed with amotosalen or riboflavin plasmas.  相似文献   

20.
目的对临床分离的耐多药结核分枝杆菌相关基因的突变特征进行分析。方法对124例耐多药结核分枝杆菌以及50株敏感株的耐药相关基因(包括异烟肼inh A、kat G、oxyR-ahp C间隔区以及利福平rpo B)进行序列测定,分析其基因突变情况。结果异烟肼耐药inh A基因突变率为14.5%;kat G基因突变率为70.2%(87/124),主要位于315位;oxyR-ahp C间隔区突变率为15.3%;inh A、kat G两种基因同时突变率75.0%,三种基因同时突变率为89.5%。利福平rpo B基因突变的检出率高达95.2%,突变主要发生在531、526、516位点。结论我省耐多药菌异烟肼耐药相关基因最常见突变为kat G 315、inh A C-T(-15)、axyR-ahp C间隔区(-10)C-T,利福平为rpo B531、526、516。结合MDR-TB耐药相关基因的特征分析,可以建立一种快速、准确、特异的适合于我省的检测结核菌耐多药性的新方法。  相似文献   

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