Background:Four classical Traditional Chinese Medicine prescriptions,namely Gualou Xiebai Baijiu decoction,Gualou Xiebai Banxia decoction(GLXBBX),Zhishi Xiebai Guizhi decoction(ZSXBGZ)and Danlou prescription(DL),have ...Background:Four classical Traditional Chinese Medicine prescriptions,namely Gualou Xiebai Baijiu decoction,Gualou Xiebai Banxia decoction(GLXBBX),Zhishi Xiebai Guizhi decoction(ZSXBGZ)and Danlou prescription(DL),have been frequently used for treatment of phlegm and blood stasis syndrome(PBSS)-related cardiovascular diseases.However,its therapeutic mechanism has not been clearly elucidated.This study aimed to explore PBSS and its molecular mechanism,clarify and compare the mechanisms of four prescriptions in treating PBSS-related diseases.Method:In this study,we collected four prescriptions’compounds,predicted therapeutic targets,and enriched pathways which were based on network pharmacology.Then,we analysed the commen and different mechanisms by combing the network of components,targets and pathways.Finally,molecular docking was engaged to assess the binding potential of key compounds and hub targets.Results:We showed that four prescriptions’intersection genes(VEGFA,SRC,EGFR,etc.)were commonly enriched in PI3K-AKT signaling pathway,HIF-1 signaling pathway,etc.In addition,platelet activation and cAMP signaling pathway were singly enriched from the GLXBBX through unique compounds 12,13-epoxy-9-hydroxynonadeca-7,10-dienoic acid and Cyclo(L-tyrosyl-L-phenylalanyl).These bioactive compounds may exert GLXBBX’s unique pharmacological pathways via involving in mediating PPARA,PTGER3,etc.Sphingolipid signaling pathway was singly enriched from the ZSXBGZ through unique compounds tetramethoxyluteolin,ergosterol peroxide,etc.These bioactive compounds could mediate ADORA1,ADORA3 and TNFRSF1A to regulate ZSXBGZ’s unique pharmacological pathways.AMPK signaling pathway was singly enriched from the DL through unique compounds kaempferol,evofolinb,ethyl acid and aureusidin.These bioactive compounds were involved in mediating the main targets of AMPK signaling pathway,such as TNF,TNFRSF1A,etc.Conclusions:Our research demonstrated that GLXB-prescriptions involved in almost all pathological stages of PBSS-related cardiovascular diseases by modulating high-frequency shared pathways and targets mainly through key compounds(quercetin,mandenol,sitosteryl acetate and luteolin,etc.),for example,participate in the process of atherosclerosis,lipid metabolism,inflammation,immune response,thrombosis,inhibit inflammatory factors and platelet aggregation,regulate immune function,vascular function,oxidative stress.In addition to common pharmacological efficacies,there could also be specificities among GLXB prescriptions due to different compounds.For example,GLXBBX tends to regulate the function of vascular and endothelial barrier,prevent thrombosis.ZSXBGZ tends to regulate lipid metabolism and protect the heart from lipid accumulation.DL tends to maintain energy homeostasis and improve inflammation.展开更多
[Objectives] To explore the efficacy of Danlou Tablet( DLT) in the treatment of coronary heart disease( CHD) with phlegm and blood stasis syndrome and its effects on serum inflammatory factors. [Methods]One hundred an...[Objectives] To explore the efficacy of Danlou Tablet( DLT) in the treatment of coronary heart disease( CHD) with phlegm and blood stasis syndrome and its effects on serum inflammatory factors. [Methods]One hundred and ninety-seven patients with CHD and phlegm and blood stasis syndrome in our hospital from January 2016 to January 2018 were selected and randomly divided into two groups: control group( n =98) treated with aspirin plus atorvastatin,and research group( n =99) treated with DLT and aspirin plus atorvastatin for one month. The clinical efficacy and incidence of adverse reactions were observed. Serum secretory phospholipase A2( s PLA2),lipoprotein-associated phospholipase A2( LP-PLA2),oxidized low-density lipoprotein( ox-LDL),monocyte chemoattractant protein-1( MCP-1) and World Health Organization Quality of Life( WHOQOL-100) scores were compared before and after one month of treatment. [Results] The total effective rate was93. 94% in the research group,which was higher than that in the control group( 79. 59%,P < 0. 05);the levels of serum s PLA2,LP-PLA2,ox-LDL and MCP-1 in the research group were lower than those in the control group after one month of treatment( P < 0. 05). There was no statistical significance of the difference in the total incidence of adverse reactions between the research group and the control group( P > 0. 05).After one month of treatment,WHOQOL-100 scores were higher in two groups,which were higher in the research group than that in the control group( P < 0. 05). [Conclusions]DLT can significantly reduce the level of serum inflammatory factors,improve the quality of life in patients with CHD and phlegm and blood stasis syndrome.展开更多
Objective:To observe the clinical efficacy and safety of Gualou Xiebai Banxia decoction combined with Danshen decoction on unstable angina(UA)with phlegm and blood stasis syndrome.Method:Eighty patients with UA were r...Objective:To observe the clinical efficacy and safety of Gualou Xiebai Banxia decoction combined with Danshen decoction on unstable angina(UA)with phlegm and blood stasis syndrome.Method:Eighty patients with UA were randomly divided into treatment group(40 cases)and control group(40 cases)by random number table.The control group was given conventional western medicine treatment,and the experimental group was given Gualou Xiebai Banxia decoction and Danshen decoction on the basis of the control group.Both groups were treated for 4 weeks.Before and after treatment,the angina attacks,dosage of nitroglycerin,traditional Chinese medicine syndrome score,quality of life score,blood lipid,coagulation index and clinical total efficacy were observed and recorded.Results:After 4 weeks of treatment,the attack times and duration of angina in the two groups were both decreased compared with those before treatment.And the treatment group was more significantly reduced than the control group,the difference was statistically significant(p<0.05);the consumption of nitroglycerin of the treatment group was 90.0%,which was better than 67.5%of the control group,the difference was statistically significant(p<0.05);the total effective rate of the treatment group was 90%,which was better than 65%of the control group,the difference was statistically significant(p<0.05);the traditional Chinese medicine(TCM)syndrome score of the experimental group was lower than that of the control group,the differences was significant(p<0.05).The improvement of low density lipoprotein(LDL-C),total cholesterol(TC)and prothrombin time(PT)in the experimental group was better than that in the control group(p<0.05).During the study,there were no obvious adverse reactions in both groups.Conclusion:Gualou Xiebai Banxia decoction combined with Danshen decoction can effectively relieve the attack of angina and the consumption of nitroglycerin,improve clinical symptoms,regulate blood lipid and blood flow state,and improve the quality of life of patients with UA,with good clinical efficacy and safety.展开更多
Objective:To evaluate the clinical efficacy of stone needle therapy based on blood stasis theory for different traditional Chinese medicine(TCM)syndrome types of patients with knee osteoarthritis in early and middle s...Objective:To evaluate the clinical efficacy of stone needle therapy based on blood stasis theory for different traditional Chinese medicine(TCM)syndrome types of patients with knee osteoarthritis in early and middle stage.Methods:Totally 36 patients with knee osteoarthritis were enrolled in the orthopaedic ward between March 2016 and December 2017,and diagnosed as qi stagnation and blood stasis syndrome,cold dampness and stasis syndrome,or phlegm and stasis syndrome according to TCM syndrome differentiation.After treatment,stone needle was used for ironing on the different meridian acupoints according to different syndrome.The efficacy of patients with the above three syndromes was respectively evaluated,and the visual analogue scale(VAS)score and western ontario and mcMaster universities arthritis Index(WOMAC)score of the three groups were calculated before treatment,2 weeks,and 4 weeks after treatment.Results:The effective rates of the three groups were 86.67%,81.82%,and 80.00%,respectively.After 2 weeks and 4 weeks of treatment,the VAS and WOMAC scores of the three groups decreased significantly compared to treatment before(P<0.05).Conclusion:Stone needle therapy for ironing on the acupoints around the knee joint has a good therapeutic effect on knee osteoarthritis of different syndrome types,which is worthy of further application.展开更多
Studying the essence of a syndrome has been a key challenge in the field of Chinese medicine.Until now,due to limitations of the methods available,the progress towards understanding such complicated systems has been s...Studying the essence of a syndrome has been a key challenge in the field of Chinese medicine.Until now,due to limitations of the methods available,the progress towards understanding such complicated systems has been slow.Metabonomics encompasses the dynamics,composition and analysis of metabolites,enabling the observation of changes in the metabolic network of the human body associated with disease.Being from the point of view of the whole organism,metabonomics provides an opportunity to study the essence of a syndrome to an unprecedented level.Phlegm and blood stasis syndrome is the main syndrome associated with coronary heart disease(CHD),which bring difficulties in clinical treatment due to difficulties associated with differentiation of symptoms and signs.The fundamental differences of material between the two also need to be interpreted.The authors consider that we can use the method of combining a disease(in this case CHD)with associated syndromes(phlegm and blood stasis syndrome)to select patients with phlegm and blood stasis syndrome of CHD,and utilize metabonomics to explore the essence of the syndrome by difference analysis of metabolite spectra.Meanwhile,we can study the syndrome in CM,observe the change regularity of metabolism spectra after the treatment of corresponding and non-corresponding prescription and syndrome,in order to validate the material fundament in the progress of syndrome formation and their differences.This will not only have great significance in enhancing the ability to identify syndrome of phlegm and blood stasis in CHD and to establish the clinical curative criteria,but will also offer a new approach of studying the essence for a syndrome using metabonomics.展开更多
Background Phlegm and blood stasis syndrome(PBSS) is one of the main syndromes in coronary heart disease(CHD). Syndromes of Chinese medicine(CM) are lack of quantitative and easyimplementation diagnosis standards. To ...Background Phlegm and blood stasis syndrome(PBSS) is one of the main syndromes in coronary heart disease(CHD). Syndromes of Chinese medicine(CM) are lack of quantitative and easyimplementation diagnosis standards. To quantify and standardize the diagnosis of PBSS, scales are usually applied. Objective: To evaluate the diagnostic accuracy of CM diagnosis scale of PBSS in CHD. Methods: Six hundred patients with stable angina pectoris of CHD, 300 in case group and 300 in control group, will be recruited from 5 hospitals across China. Diagnosis from 2 experts will be considered as the "gold standard". The study design consists of 2 phases: pilot test is used to evaluate the reliability and validity, and diagnostic test is used to assess the diagnostic accuracy of the scale, including sensitivity, specificity, likelihood ratio and area under the receiver operator characteristic(ROC) curve. Discussion: This study will evaluate the diagnostic accuracy of CM diagnosis scale of PBSS in CHD. The consensus of 2 experts may not be ideal as a "gold standard", and itself still requires further study.(No. ChiCTR-OOC-15006599).展开更多
背景:膝骨关节炎多发于中老年人,是一类严重影响患者的生活质量甚至有致残风险的疾病。因此,膝骨关节炎的发病机制以及治疗手段已成为研究的焦点。在祖国医学中,膝骨关节炎常以“痹”论治,并与中医“血瘀”理论中血行瘀滞、血脉阻络而...背景:膝骨关节炎多发于中老年人,是一类严重影响患者的生活质量甚至有致残风险的疾病。因此,膝骨关节炎的发病机制以及治疗手段已成为研究的焦点。在祖国医学中,膝骨关节炎常以“痹”论治,并与中医“血瘀”理论中血行瘀滞、血脉阻络而致之“痹”紧密相关。铁超载是一类因铁代谢紊乱导致的病理状态,其与中医“血瘀”理论的发病特点、临床表现等高度重合,是促进膝骨关节炎发展的危险因素。目的:基于“血瘀”理论,就铁超载对软骨代谢以及软骨下骨重建的影响展开综述,为中医药治疗膝骨关节炎奠定了全新理论基础,也为探究活血中药干预骨组织后期治疗作用的相关机制提供理论依据。方法:通过检索中国知网、万方数据、PubMed及Web of Science数据库获得文献,中文检索词为“铁死亡,铁,铁超载,骨关节炎,血瘀”以及英文检索词为“ferroptosis,iron,iron overload,osteoarthritis,TCM”,最终纳入文献76篇进行综述分析。结果与结论:①文章针对“血瘀”理论治疗膝骨关节炎的潜力进行发掘,发现“血瘀”是膝骨关节炎进展中至关重要的部分,表明“血瘀”理论是中医治疗膝骨关节炎的关键所在。②“血瘀”与铁超载在致病因素、临床表现、发病特点上有高度的相似性,提示了“血瘀”理论治疗铁超载的可能性,说明铁超载可能是“血瘀”理论治疗膝骨关节炎的重要机制基础,活血类药物的提取物有着缓解铁超载并治疗膝骨关节炎的作用,但具体机制尚不明确。③“血瘀”理论与铁超载的关系及相关机制是未来膝骨关节炎的重要研究方向,可为中医临床开发新药、创新用法等中医现代化手段提供了理论基础,对临床有一定的指导意义。展开更多
基金supportes by National Natural Science Foundation of China(Grant no.82274137,81873038)Natural Science Foundation of Anhui Province(2208085MH275)+2 种基金Natural Science Research Project of Anhui Provincial Department of Education(KJ2021A0592)Anhui University Scientific Research Project(YJS20210488)the 7th China International College Studengts“Internet+”Innovation and entrepreneurship Competition(S202110369046).
文摘Background:Four classical Traditional Chinese Medicine prescriptions,namely Gualou Xiebai Baijiu decoction,Gualou Xiebai Banxia decoction(GLXBBX),Zhishi Xiebai Guizhi decoction(ZSXBGZ)and Danlou prescription(DL),have been frequently used for treatment of phlegm and blood stasis syndrome(PBSS)-related cardiovascular diseases.However,its therapeutic mechanism has not been clearly elucidated.This study aimed to explore PBSS and its molecular mechanism,clarify and compare the mechanisms of four prescriptions in treating PBSS-related diseases.Method:In this study,we collected four prescriptions’compounds,predicted therapeutic targets,and enriched pathways which were based on network pharmacology.Then,we analysed the commen and different mechanisms by combing the network of components,targets and pathways.Finally,molecular docking was engaged to assess the binding potential of key compounds and hub targets.Results:We showed that four prescriptions’intersection genes(VEGFA,SRC,EGFR,etc.)were commonly enriched in PI3K-AKT signaling pathway,HIF-1 signaling pathway,etc.In addition,platelet activation and cAMP signaling pathway were singly enriched from the GLXBBX through unique compounds 12,13-epoxy-9-hydroxynonadeca-7,10-dienoic acid and Cyclo(L-tyrosyl-L-phenylalanyl).These bioactive compounds may exert GLXBBX’s unique pharmacological pathways via involving in mediating PPARA,PTGER3,etc.Sphingolipid signaling pathway was singly enriched from the ZSXBGZ through unique compounds tetramethoxyluteolin,ergosterol peroxide,etc.These bioactive compounds could mediate ADORA1,ADORA3 and TNFRSF1A to regulate ZSXBGZ’s unique pharmacological pathways.AMPK signaling pathway was singly enriched from the DL through unique compounds kaempferol,evofolinb,ethyl acid and aureusidin.These bioactive compounds were involved in mediating the main targets of AMPK signaling pathway,such as TNF,TNFRSF1A,etc.Conclusions:Our research demonstrated that GLXB-prescriptions involved in almost all pathological stages of PBSS-related cardiovascular diseases by modulating high-frequency shared pathways and targets mainly through key compounds(quercetin,mandenol,sitosteryl acetate and luteolin,etc.),for example,participate in the process of atherosclerosis,lipid metabolism,inflammation,immune response,thrombosis,inhibit inflammatory factors and platelet aggregation,regulate immune function,vascular function,oxidative stress.In addition to common pharmacological efficacies,there could also be specificities among GLXB prescriptions due to different compounds.For example,GLXBBX tends to regulate the function of vascular and endothelial barrier,prevent thrombosis.ZSXBGZ tends to regulate lipid metabolism and protect the heart from lipid accumulation.DL tends to maintain energy homeostasis and improve inflammation.
基金Supported by the Project of Shaanxi Provincial Science and Technology Department(2016TZC-S-14-3)
文摘[Objectives] To explore the efficacy of Danlou Tablet( DLT) in the treatment of coronary heart disease( CHD) with phlegm and blood stasis syndrome and its effects on serum inflammatory factors. [Methods]One hundred and ninety-seven patients with CHD and phlegm and blood stasis syndrome in our hospital from January 2016 to January 2018 were selected and randomly divided into two groups: control group( n =98) treated with aspirin plus atorvastatin,and research group( n =99) treated with DLT and aspirin plus atorvastatin for one month. The clinical efficacy and incidence of adverse reactions were observed. Serum secretory phospholipase A2( s PLA2),lipoprotein-associated phospholipase A2( LP-PLA2),oxidized low-density lipoprotein( ox-LDL),monocyte chemoattractant protein-1( MCP-1) and World Health Organization Quality of Life( WHOQOL-100) scores were compared before and after one month of treatment. [Results] The total effective rate was93. 94% in the research group,which was higher than that in the control group( 79. 59%,P < 0. 05);the levels of serum s PLA2,LP-PLA2,ox-LDL and MCP-1 in the research group were lower than those in the control group after one month of treatment( P < 0. 05). There was no statistical significance of the difference in the total incidence of adverse reactions between the research group and the control group( P > 0. 05).After one month of treatment,WHOQOL-100 scores were higher in two groups,which were higher in the research group than that in the control group( P < 0. 05). [Conclusions]DLT can significantly reduce the level of serum inflammatory factors,improve the quality of life in patients with CHD and phlegm and blood stasis syndrome.
基金Special Project of National Traditional Chinese Medicine Clinical Research Base of State Administration of Traditional Chinese Medicine(No.JDZX2015249)National Natural Science Foundation of China(No.81973836)。
文摘Objective:To observe the clinical efficacy and safety of Gualou Xiebai Banxia decoction combined with Danshen decoction on unstable angina(UA)with phlegm and blood stasis syndrome.Method:Eighty patients with UA were randomly divided into treatment group(40 cases)and control group(40 cases)by random number table.The control group was given conventional western medicine treatment,and the experimental group was given Gualou Xiebai Banxia decoction and Danshen decoction on the basis of the control group.Both groups were treated for 4 weeks.Before and after treatment,the angina attacks,dosage of nitroglycerin,traditional Chinese medicine syndrome score,quality of life score,blood lipid,coagulation index and clinical total efficacy were observed and recorded.Results:After 4 weeks of treatment,the attack times and duration of angina in the two groups were both decreased compared with those before treatment.And the treatment group was more significantly reduced than the control group,the difference was statistically significant(p<0.05);the consumption of nitroglycerin of the treatment group was 90.0%,which was better than 67.5%of the control group,the difference was statistically significant(p<0.05);the total effective rate of the treatment group was 90%,which was better than 65%of the control group,the difference was statistically significant(p<0.05);the traditional Chinese medicine(TCM)syndrome score of the experimental group was lower than that of the control group,the differences was significant(p<0.05).The improvement of low density lipoprotein(LDL-C),total cholesterol(TC)and prothrombin time(PT)in the experimental group was better than that in the control group(p<0.05).During the study,there were no obvious adverse reactions in both groups.Conclusion:Gualou Xiebai Banxia decoction combined with Danshen decoction can effectively relieve the attack of angina and the consumption of nitroglycerin,improve clinical symptoms,regulate blood lipid and blood flow state,and improve the quality of life of patients with UA,with good clinical efficacy and safety.
文摘Objective:To evaluate the clinical efficacy of stone needle therapy based on blood stasis theory for different traditional Chinese medicine(TCM)syndrome types of patients with knee osteoarthritis in early and middle stage.Methods:Totally 36 patients with knee osteoarthritis were enrolled in the orthopaedic ward between March 2016 and December 2017,and diagnosed as qi stagnation and blood stasis syndrome,cold dampness and stasis syndrome,or phlegm and stasis syndrome according to TCM syndrome differentiation.After treatment,stone needle was used for ironing on the different meridian acupoints according to different syndrome.The efficacy of patients with the above three syndromes was respectively evaluated,and the visual analogue scale(VAS)score and western ontario and mcMaster universities arthritis Index(WOMAC)score of the three groups were calculated before treatment,2 weeks,and 4 weeks after treatment.Results:The effective rates of the three groups were 86.67%,81.82%,and 80.00%,respectively.After 2 weeks and 4 weeks of treatment,the VAS and WOMAC scores of the three groups decreased significantly compared to treatment before(P<0.05).Conclusion:Stone needle therapy for ironing on the acupoints around the knee joint has a good therapeutic effect on knee osteoarthritis of different syndrome types,which is worthy of further application.
基金Supported by the National Natural Science Foundation of China(No.30901891)
文摘Studying the essence of a syndrome has been a key challenge in the field of Chinese medicine.Until now,due to limitations of the methods available,the progress towards understanding such complicated systems has been slow.Metabonomics encompasses the dynamics,composition and analysis of metabolites,enabling the observation of changes in the metabolic network of the human body associated with disease.Being from the point of view of the whole organism,metabonomics provides an opportunity to study the essence of a syndrome to an unprecedented level.Phlegm and blood stasis syndrome is the main syndrome associated with coronary heart disease(CHD),which bring difficulties in clinical treatment due to difficulties associated with differentiation of symptoms and signs.The fundamental differences of material between the two also need to be interpreted.The authors consider that we can use the method of combining a disease(in this case CHD)with associated syndromes(phlegm and blood stasis syndrome)to select patients with phlegm and blood stasis syndrome of CHD,and utilize metabonomics to explore the essence of the syndrome by difference analysis of metabolite spectra.Meanwhile,we can study the syndrome in CM,observe the change regularity of metabolism spectra after the treatment of corresponding and non-corresponding prescription and syndrome,in order to validate the material fundament in the progress of syndrome formation and their differences.This will not only have great significance in enhancing the ability to identify syndrome of phlegm and blood stasis in CHD and to establish the clinical curative criteria,but will also offer a new approach of studying the essence for a syndrome using metabonomics.
基金Supported by National Basic Research Program of China(973 Program,No.2014CB542901)
文摘Background Phlegm and blood stasis syndrome(PBSS) is one of the main syndromes in coronary heart disease(CHD). Syndromes of Chinese medicine(CM) are lack of quantitative and easyimplementation diagnosis standards. To quantify and standardize the diagnosis of PBSS, scales are usually applied. Objective: To evaluate the diagnostic accuracy of CM diagnosis scale of PBSS in CHD. Methods: Six hundred patients with stable angina pectoris of CHD, 300 in case group and 300 in control group, will be recruited from 5 hospitals across China. Diagnosis from 2 experts will be considered as the "gold standard". The study design consists of 2 phases: pilot test is used to evaluate the reliability and validity, and diagnostic test is used to assess the diagnostic accuracy of the scale, including sensitivity, specificity, likelihood ratio and area under the receiver operator characteristic(ROC) curve. Discussion: This study will evaluate the diagnostic accuracy of CM diagnosis scale of PBSS in CHD. The consensus of 2 experts may not be ideal as a "gold standard", and itself still requires further study.(No. ChiCTR-OOC-15006599).
文摘背景:膝骨关节炎多发于中老年人,是一类严重影响患者的生活质量甚至有致残风险的疾病。因此,膝骨关节炎的发病机制以及治疗手段已成为研究的焦点。在祖国医学中,膝骨关节炎常以“痹”论治,并与中医“血瘀”理论中血行瘀滞、血脉阻络而致之“痹”紧密相关。铁超载是一类因铁代谢紊乱导致的病理状态,其与中医“血瘀”理论的发病特点、临床表现等高度重合,是促进膝骨关节炎发展的危险因素。目的:基于“血瘀”理论,就铁超载对软骨代谢以及软骨下骨重建的影响展开综述,为中医药治疗膝骨关节炎奠定了全新理论基础,也为探究活血中药干预骨组织后期治疗作用的相关机制提供理论依据。方法:通过检索中国知网、万方数据、PubMed及Web of Science数据库获得文献,中文检索词为“铁死亡,铁,铁超载,骨关节炎,血瘀”以及英文检索词为“ferroptosis,iron,iron overload,osteoarthritis,TCM”,最终纳入文献76篇进行综述分析。结果与结论:①文章针对“血瘀”理论治疗膝骨关节炎的潜力进行发掘,发现“血瘀”是膝骨关节炎进展中至关重要的部分,表明“血瘀”理论是中医治疗膝骨关节炎的关键所在。②“血瘀”与铁超载在致病因素、临床表现、发病特点上有高度的相似性,提示了“血瘀”理论治疗铁超载的可能性,说明铁超载可能是“血瘀”理论治疗膝骨关节炎的重要机制基础,活血类药物的提取物有着缓解铁超载并治疗膝骨关节炎的作用,但具体机制尚不明确。③“血瘀”理论与铁超载的关系及相关机制是未来膝骨关节炎的重要研究方向,可为中医临床开发新药、创新用法等中医现代化手段提供了理论基础,对临床有一定的指导意义。