Objective:To dynamically observe the progression of chronic gastritis to gastric cancer(GC)in diseasetraditional Chinese medicine(TCM)pattern rats to provide data for understanding the disease progression and effectiv...Objective:To dynamically observe the progression of chronic gastritis to gastric cancer(GC)in diseasetraditional Chinese medicine(TCM)pattern rats to provide data for understanding the disease progression and effective approaches for drug screening and mechanism exploration.Methods:Wistar rats were randomly divided into control(n=96,half female and half male)and model(n=336,half female and half male)groups.Model rats received free access to N-methyl-N0-nitro-Nnitrosoguanidine(120 mg/mL),sodium deoxycholate(20 mmol/L),and alcohol(45%),and were subjected to intermittent fasting.Mortality rate,body weight,water consumption,food intake,gastric pathology,blood content analysis,and liver and kidney function of model rats were dynamically monitored over 30 weeks.In the 30th week,pattern characteristics were assessed.Gastric pathology and pattern characteristics were observed for an additional 8 weeks to evaluate stability.Results:The overall mortality of the model group was 34.82%(33.10%for females and 36.55%for males)at 30 weeks post-intervention.Inflammatory cell infiltration,glandular atrophy,atypical hyperplasia,and GC manifested successively in the gastric mucosa of rats.In model rats,N-methyl-N0-nitro-N-nitrosoguanidine intake was lower in males than in females,whereas pathological changes in the gastric mucosa occurred earlier in females than in males.Notably,gastric mucosal lesions were more severe in males than in females.Our modeling methods maintained stable gastric mucosal lesions for at least 8 weeks after final intervention.The pattern characteristics observed in model rats at the 30th and 38th week were consistent with those of spleen deficiency,blood stasis,and yin deficiency pattern.Blood content and indexes of liver and kidney function in the model group were normal.Conclusion:Our findings provide evidence for the pathological stages underscoring the progression of chronic gastritis to GC in disease-TCM pattern rats,which may facilitate development of relevant pharmacotherapies.展开更多
中医药在胃癌前病变(precancerous lesions of gastric cancer,PLGC)诊疗中发挥着重要作用,病证结合动物模型是进行PLGC相关实验研究的前提。文章从模型动物选择、胃癌前病变疾病模型和病证结合模型三方面,对近年来PLGC病证结合模型的...中医药在胃癌前病变(precancerous lesions of gastric cancer,PLGC)诊疗中发挥着重要作用,病证结合动物模型是进行PLGC相关实验研究的前提。文章从模型动物选择、胃癌前病变疾病模型和病证结合模型三方面,对近年来PLGC病证结合模型的制备方法进行了归纳分析,介绍了脾胃虚弱、胃阴不足、肝胃气滞、脾胃湿热和胃络瘀血5个常见PLGC病证结合模型的造模方法,并对当前模型制备中存在的问题提出了思考与展望。展开更多
对近10年来有关中医辨治胃癌前病变(precancerous lesions of gastric cancer,PLGC)的研究进行综述。PLGC是指在慢性萎缩性胃炎基础上出现的胃黏膜肠上皮化生和异型增生,作为慢性萎缩性胃炎与胃癌的中间阶段,PLGC的病程较缓慢。中医辨治...对近10年来有关中医辨治胃癌前病变(precancerous lesions of gastric cancer,PLGC)的研究进行综述。PLGC是指在慢性萎缩性胃炎基础上出现的胃黏膜肠上皮化生和异型增生,作为慢性萎缩性胃炎与胃癌的中间阶段,PLGC的病程较缓慢。中医辨治PLGC具有一定的优势。PLGC主要可分为脾胃虚弱证、脾胃湿热证、肝胃气滞证、胃络瘀阻证、胃阴不足证5种证型。胃镜技术的普及促进了胃病微观辨证的发展,微观辨证与宏观辨证的结合为PLGC的中医辨证论治提供了更加丰富的理论支持。PLGC根本病机为脾胃虚弱,脾胃气机不畅,兼有湿热、瘀毒、痰湿等病理因素蕴结,日久胃阴亏耗。中药治疗PLGC的临床研究开展较多,治疗主要采用以益气健脾为主,兼以疏肝活血、化湿消瘀、化瘀解毒、养阴益胃,从而防止PLGC向胃癌进一步发展。针灸治疗胃癌前病变的研究开展较少。今后需开展更多严格且规范的多中心、大样本的临床随机对照试验,深入研究针灸治疗胃癌前病变机制,以期为中医辨治PLGC提供更多高级别的循证依据。展开更多
N-甲基-N'-硝基-N-亚硝基胍(N-methyl-N'-nitro-N-nitrosoguanidine,MNNG)是一种化学诱变剂及致癌剂,人类在长期摄入MNNG后易致慢性萎缩性胃炎甚至胃癌,许多学者将MNNG作为诱发胃癌癌前病变(precancerous lesions of gastric ca...N-甲基-N'-硝基-N-亚硝基胍(N-methyl-N'-nitro-N-nitrosoguanidine,MNNG)是一种化学诱变剂及致癌剂,人类在长期摄入MNNG后易致慢性萎缩性胃炎甚至胃癌,许多学者将MNNG作为诱发胃癌癌前病变(precancerous lesions of gastric cancer,PLGC)动物模型造模制剂,以制备出符合实验要求的PLGC动物模型。本文通过搜索近年来使用MNNG复制PLGC动物模型的相关研究,根据使用MNNG造模过程中所涉及到的造模方式分类,比较构建PLGC大鼠模型的多种方法,探寻更为简单易行的PLGC动物模型造模方式,为深入开展该病的相关研究提供更符合科研与临床实际要求的模型支撑。展开更多
基金This study was supported by the Major Innovative Drug Development Project from the Ministry of Science and Technology of the People's Republic of China(2017ZX09301011).
文摘Objective:To dynamically observe the progression of chronic gastritis to gastric cancer(GC)in diseasetraditional Chinese medicine(TCM)pattern rats to provide data for understanding the disease progression and effective approaches for drug screening and mechanism exploration.Methods:Wistar rats were randomly divided into control(n=96,half female and half male)and model(n=336,half female and half male)groups.Model rats received free access to N-methyl-N0-nitro-Nnitrosoguanidine(120 mg/mL),sodium deoxycholate(20 mmol/L),and alcohol(45%),and were subjected to intermittent fasting.Mortality rate,body weight,water consumption,food intake,gastric pathology,blood content analysis,and liver and kidney function of model rats were dynamically monitored over 30 weeks.In the 30th week,pattern characteristics were assessed.Gastric pathology and pattern characteristics were observed for an additional 8 weeks to evaluate stability.Results:The overall mortality of the model group was 34.82%(33.10%for females and 36.55%for males)at 30 weeks post-intervention.Inflammatory cell infiltration,glandular atrophy,atypical hyperplasia,and GC manifested successively in the gastric mucosa of rats.In model rats,N-methyl-N0-nitro-N-nitrosoguanidine intake was lower in males than in females,whereas pathological changes in the gastric mucosa occurred earlier in females than in males.Notably,gastric mucosal lesions were more severe in males than in females.Our modeling methods maintained stable gastric mucosal lesions for at least 8 weeks after final intervention.The pattern characteristics observed in model rats at the 30th and 38th week were consistent with those of spleen deficiency,blood stasis,and yin deficiency pattern.Blood content and indexes of liver and kidney function in the model group were normal.Conclusion:Our findings provide evidence for the pathological stages underscoring the progression of chronic gastritis to GC in disease-TCM pattern rats,which may facilitate development of relevant pharmacotherapies.
文摘中医药在胃癌前病变(precancerous lesions of gastric cancer,PLGC)诊疗中发挥着重要作用,病证结合动物模型是进行PLGC相关实验研究的前提。文章从模型动物选择、胃癌前病变疾病模型和病证结合模型三方面,对近年来PLGC病证结合模型的制备方法进行了归纳分析,介绍了脾胃虚弱、胃阴不足、肝胃气滞、脾胃湿热和胃络瘀血5个常见PLGC病证结合模型的造模方法,并对当前模型制备中存在的问题提出了思考与展望。
文摘对近10年来有关中医辨治胃癌前病变(precancerous lesions of gastric cancer,PLGC)的研究进行综述。PLGC是指在慢性萎缩性胃炎基础上出现的胃黏膜肠上皮化生和异型增生,作为慢性萎缩性胃炎与胃癌的中间阶段,PLGC的病程较缓慢。中医辨治PLGC具有一定的优势。PLGC主要可分为脾胃虚弱证、脾胃湿热证、肝胃气滞证、胃络瘀阻证、胃阴不足证5种证型。胃镜技术的普及促进了胃病微观辨证的发展,微观辨证与宏观辨证的结合为PLGC的中医辨证论治提供了更加丰富的理论支持。PLGC根本病机为脾胃虚弱,脾胃气机不畅,兼有湿热、瘀毒、痰湿等病理因素蕴结,日久胃阴亏耗。中药治疗PLGC的临床研究开展较多,治疗主要采用以益气健脾为主,兼以疏肝活血、化湿消瘀、化瘀解毒、养阴益胃,从而防止PLGC向胃癌进一步发展。针灸治疗胃癌前病变的研究开展较少。今后需开展更多严格且规范的多中心、大样本的临床随机对照试验,深入研究针灸治疗胃癌前病变机制,以期为中医辨治PLGC提供更多高级别的循证依据。
文摘N-甲基-N'-硝基-N-亚硝基胍(N-methyl-N'-nitro-N-nitrosoguanidine,MNNG)是一种化学诱变剂及致癌剂,人类在长期摄入MNNG后易致慢性萎缩性胃炎甚至胃癌,许多学者将MNNG作为诱发胃癌癌前病变(precancerous lesions of gastric cancer,PLGC)动物模型造模制剂,以制备出符合实验要求的PLGC动物模型。本文通过搜索近年来使用MNNG复制PLGC动物模型的相关研究,根据使用MNNG造模过程中所涉及到的造模方式分类,比较构建PLGC大鼠模型的多种方法,探寻更为简单易行的PLGC动物模型造模方式,为深入开展该病的相关研究提供更符合科研与临床实际要求的模型支撑。
