中西医结合治疗初治继发性肺结核方案的临床与实验研究
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摘要
目的客观评价中西医结合治疗初治继发性肺结核方案的疗效及安全性,部分阐明中西医结合疗法治疗初治继发性肺结核的基础药效,初步探索其相关作用机制,为中医药在肺结核防治领域的临床应用提供科学依据。
     方法临床试验研究.研究设计:采用多中心、大样本、随机对照研究方案。研究对象:采用计算机中央随机系统将310例初治继发性肺结核患者随机分配到对照组和试验组,并根据痰涂片结果(涂阴/涂阳=1:1)施行分层随机。干预措施:对照组采用2HRZE/4HR化疗方案治疗;试验组采用2HRZE/4HR化疗方案联合辨证中药治疗。观测指标:中医症状积分、痰菌涂片、胸部X片、SF-36生活质量评分、药物不良反应症状、血常规、肝肾功、空腹葡萄糖、血尿酸。基础实验研究采用流式细胞技术检测初治继发性肺结核患者治疗前后T细胞亚群(CD3、CD4、CD8)及Th1/Th2相关细胞因子(IL-2、IFN-γ、IL-4、IL-6、IL-10、TNF-a)的含量变化;采用病理形态学方法观察中药双百口服液与HR联合应用对BCG所致小鼠肺损伤的病理形态学影响;采用小鼠负重游泳试验评价中药双百口服液的抗疲劳作用;采用异烟肼联合利福平致大鼠肝损伤模型观察中药双百口服液对大鼠血清中ALT、AST以及肝组织中CYP2E1、MDA、SOD、GSH-Px含量的影响。
     结果临床试验研究患者中医证候疗效判定结果显示,对照组总有效率为90.5%,治愈率为13.8%;试验组总有效率为99.3%,治愈率为51.1%。对照组1月痰菌转阴率为59.3%,试验组1月痰菌转阴率为87.8%,两组患者2月累计痰菌转阴率差异无统计学意义。治疗1月后,对照组胸部X片病灶出现吸收的患者比例为52.6%,试验组为85.6%;治疗6月后,对照组胸部X片病灶明显吸收的患者比例为60.3%,试验组为82.0%。SF-36生活质量评分结果显示,试验组在改善患者生理功能、生理职能、一般健康状况、精力、情感职能、精神健康方面优于对照组。治疗期间,对照组患者持续胃肠道反应发生率为48.3%,试验组为7.9%。抗结核化疗药物对血常规的影响主要表现为PLT和WBC的降低,对照组PLT低于正常值的患者比例为12.38±3.85%,试验组为6.35±4.16%;对照组WBC低于正常值的患者比例为12.93±2.44%,试验组为4.45±1.78%。对照组ALT大于正常值的患者比例最高为29.3%,试验组为16.5%;对照组AST大于正常值的患者比例最高为17.2%,试验组为11.5%。两种治疗方案对患者肾功能指标的影响并不显著,对空腹血糖值的影响也较小。两组患者在接受治疗后,血尿酸均明显升高,此后随着强化期的结束,患者血尿酸含量逐渐降至正常范围。
     基础实验研究初治继发性肺结核患者治疗前后T淋巴细胞亚群的整体变化较小,治疗前CD4+、CD8+T淋巴细胞数量小于正常值的患者比例相对较高,治疗6月后CD4+、CD8+T淋巴细胞数量小于正常值的患者比例相对减少,试验组与对照组相比较,差异无统计学意义。治疗前,患者Thl细胞功能是降低的,表现为IL-2及IFN-γ的血清含量较治疗后低;经治疗后,两组患者血清IL-2水平出现先升高后降低的变化,试验组患者升高程度明显大于对照组;试验组患者血清IFN-γ水平也同样出现先升高后降低的变化,而对照组血清IFN-γ水平无明显变化;两组患者血清TNF-a水平在治疗过程中逐渐下降,试验组下降幅度大于对照组。治疗前,Th2细胞功能处于增高状态,其表现为血清IL-4、IL-6、IL-10水平较治疗结束时高;经治疗后,两组患者血清IL-4、IL-6、IL-10含量明显降低,两组比较,差异无统计学意义。中药双百口服液与异烟肼、利福平联合应用可减轻BCG肺损伤模型小鼠的肺部炎症损伤,减少上皮样细胞肉芽肿形成,促进肺组织损伤修复。中药双百口服液可明显延长小鼠负重游泳时间,具有抗疲劳作用。中药双百口服液与异姻肼、利福平联合应用可对抗异烟肼和利福平导致的大鼠血清ALT、AST升高,可降低大鼠肝组织中CYP2E1、MDA的含量,稳定SOD的含量,提高GSH-Px的含量。
     结论中西医结合治疗初治继发性肺结核方案疗效确切,安全性较高,其作用优势表现为辨证中药治疗与抗结核化疗药物的联合应用可有效减轻抗结核化疗药物的毒副作用,增强化疗药物的抗痨效果。中西医结合治疗方案的减毒增效作用可能与其增强人体免疫功能,激活与抗结核杆菌相关的细胞免疫,减轻肺组织炎症,减少上皮样细胞肉芽肿的形成,促进肺组织损伤修复,提高机体运动耐力及抗疲劳能力,抑制细胞色素酶CYP2E1及增强肝组织抗氧化能力有关。
Objective
     To objectively evaluate the therapeutic effect and safety of regimen of integrated traditional Chinese and western medicine in treating untreated secondary pulmonary tuberculosis; partially expound the basic efficacy of integration of traditional Chinese and western medicine in treating untreated secondary pulmonary tuberculosis, and initially explore its correlated mechanism of action, and provide scientific evidences for clinical application of TCM in preventing and treating pulmonary tuberculosis.
     Methods
     Clinical trial
     Study design:applied research design of multicenter, large sample, and randomized controlled. Object of study:randomly assigned310cases of untreated secondary pulmonary tuberculosis to control group and experimental group by applying computer central stochastic system, and carried out stratified random based on results of sputum smear (smear-negative/smear-positive=1:1). Interventions:the control group was treated by chemotherapy with2HRZE/4HR; while the experimental group was treated by integrated chemotherapy with2HRZE/4HR and herbal treatment on the basis of syndrome differentiation.Observation index:TCM symptoms integral, sputum smears, chest X-rays, SF-36scales in measuring QOL, and symptoms of adverse drug reactions, Routine blood indexes, liver and kidney function indexes, fasting plasma glucose (FPG), and blood uric acid (BUA).
     Experimental study
     Changes of T-cell subsets (CD3, CD4. CD8) and Th1/Th2(IL-2,IFN-γ, IL-4, IL-6, IL-10, TNF-α) of untreated secondary tuberculosis pulmonary patients before and after the treatment were tested by flow cytometry. The effect of combined application of Shuang Bai Kou Fu Ye (Shuangbai Oral Liquid,双百口服液) and HR on BCG induced lung injury mice was observed by pathological morphology method. The anti-fatigue effect of Shuang Bai Kou Fu Ye was evaluated by mice weight loading swimming test. The effect of Shuang Bai Kou Fu Ye on ALT, AST in serum, and content of CYP2E1, MDA, SOD, and GSH-Px in hepatic tissue was observed by rat liver injury model induced by combination of Isoniazid and Rifampicin.
     Results
     Clinical trial
     The determination results of global clinical efficacy assessment of TCM syndromes shown that total effective rate of control group is90.5%, cure rate is13.8%; and those of experimental group is99.3%and51.1%respectively.1month later, the negative-inverted rate of sputum bacteria of control group was59.3%, and that of experimental group was87.8%; while for that of2month later, the deffrence was not statistical significant between two groups.1month treatment later, the patients' proportion of control group with lesion obsorption shown by chest-X rays was52.6%, and that of experimental group was85.6%. While6months later, that of control group and experimental group was52.6%and85.6%respectively. The results of SF-36 scales shown that physical functioning, role-physical, general health, vitality, role-emotional, mental health of patients in experimental group were better than control group. During the treatment, the incidence of continuous gastrointestinal reaction of patients in control patients was48.3%, and that of experimental group was7.9%. The main influence of antituberculous chemotherapy drugs on blood routine test was PLT and WBC reduction. The portion of patients in control group with PLT lower than normal value was12.38±3.85%, and that of experimental group was6.35±4.16%; while for WBC, the rate of two groups were12.93±2.44%and4.45±1.78%respectively. The highest portion of patients in control group with ALT higher than normal value was29.3%, and that of experimental group was16.5%; while that of AST was17.2%and11.5%respectively. Both regimens had no significant effect on kidney function index, and minor effect on FPG. Afer the treatment, the BUA of both groups increased significantly, however, as ending of the intensive treatment, the BUA gradually reduced to normal range.
     Experimental study
     There were minor changes of T-cell subsets of untreated secondary pulmonary tuberculosis before and after the treatment. Before the treatment, the portion of patients with less counts than normal value of CD4+, CD8+T-lymphocyte was relatively higher, while6months after the treatment, the portion was relatively reduced. Compared the experimental group with control group, the defference was not statistical significant. Before the treatment, the function of Thl was reduced, manifested by lower content of IL-2and IFN-y in blood serum than post-treatment. After the treatment, IL-2of both groups increased first and decreased then, and the increasing range of experimental group was larger than control group. IFN-y of experimental group also increased first and decreased then, but no significant change for control group. The content of TNF-a in both groups were reducing gradually during the treatment, and the range of experimental group was larger than control group. Before the treatment, the function of Th2cells was hyperactive, manifested by higher level of IL-4, IL-6, and IL-10in blood serum than post-treatment. After the treatment, the content of IL-4, IL-6, IL-10in blood serum reduced significantly, but compared two groups, the difference was not statistical significant. Combined application of Shuang Bai Kou Fu Ye, Isoniazid, and Rifampicin could relieve lung inflammatory injury of BCG induced lung injury model mice, reduce the generation of epithelioid cell granuloma, and promote the repair of lung tissue injury. Shuang Bai Kou Fu Ye could significantly prolong the swimming time of wight loading mice, and had effect of anti-fatigue. Combined application of Shuang Bai Kou Fu Ye, Isoniazid, and Rifampicin could resist rising of ALT and AST caused by Isoniazid, and Rifampicin, reduce content of CYP2E1and MDA in hepatic tissue, stabilize content of SOD, and increase content of GSH-Px.
     Conclusion
     The regimen of integrated traditional Chinese and western medicine treatment for untreated secondary pulmonary tuberculosis is effective and safe. The advantages manifest in effectively reducing toxicity and side effects, and reinforcing anti-tuberculosis effect of chemotherapy drugs with combined application of herbal treatment on basis of syndrome differentiation and anti-tuberculosis chemotherapy drugs. The action of toxicity-reducing and effect-reiforcing of regimen of integrated traditional Chinese and western medicine treatment may be related with reinforcing immune function, activating cytoimmunity related to anti-tubercle bacillus, relieving the inflammation of lung tissue, reducing the generation of epithelioid cell granuloma, promoting the repair of lung tissue injury, improving exercise tolerance and effect of anti-fatigue, inhibiting cytochrome CYP2E1, and enhancing antioxidant capacity of hepatic tissue.
引文
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