Gastric cancer incidence based on endoscopic Kyoto classification of gastritis

BACKGROUND Gastric cancer(GC)incidence based on the endoscopic Kyoto classification of gastritis has not been systematically investigated using time-to-event analysis.AIM To examine GC incidence in an endoscopic surveillance cohort.METHODS This study was retrospectively conducted at the Toyoshima Endoscopy Clinic.Patients who underwent two or more esophagogastroduodenoscopies were enrolled.GC incidence was based on Kyoto classification scores,such as atrophy,intestinal metaplasia(IM),enlarged folds(EFs),nodularity,diffuse redness(DR),and total Kyoto scores.Hazard ratios(HRs)adjusted for age and sex were calculated using a Cox hazard model.RESULTS A total of 6718 patients were enrolled(median age 54.0 years;men 44.2%).During the follow-up period(max 5.02 years;median 2.56 years),GC developed in 34 patients.The average frequency of GCs per year was 0.19%.Kyoto atrophy scores 1[HR with score 0 as reference:3.66,95%confidence interval(CI):1.06 to 12.61],2(11.60,3.82-35.27),IM score 2(9.92,4.37-22.54),EF score 1(4.03,1.63-9.96),DR scores 1(6.22,2.65-14.56),and 2(10.01,3.73-26.86)were associated with GC incidence,whereas nodularity scores were not.The total Kyoto scores of 4(HR with total Kyoto scores 0-1 as reference:6.23,95%CI:1.93 to 20.13,P=0.002)and 5-8(16.45,6.29-43.03,P<0.001)were more likely to develop GC,whereas the total Kyoto scores 2-3 were not.The HR of the total Kyoto score for developing GC per 1 rank was 1.75(95%CI:1.46 to 2.09,P<0.001).CONCLUSION A high total Kyoto score(≥4)was associated with GC incidence.The endoscopy-based diagnosis of gastritis can stratify GC risk.

Kyoto classification of gastritis,virtual chromoendoscopy and artificial intelligence:Where are we going?What do we need?

Chronic gastritis(CG)is a widespread and frequent disease,mainly caused by Helicobacter pylori infection,which is associated with an increased risk of gastric cancer.Virtual chromoendoscopy improves the endoscopic diagnostic efficacy,which is essential to establish the most appropriate therapy and to enable cancer prevention.Artificial intelligence provides algorithms for the diagnosis of gastritis and,in particular,early gastric cancer,but it is not yet used in practice.Thus,technological innovation,through image resolution and processing,optimizes the diagnosis and management of CG and gastric cancer.The endoscopic Kyoto classification of gastritis improves the diagnosis and management of this disease,but through the analysis of the most recent literature,new algorithms can be proposed.

Kyoto-1保存液保存的移植用肺Ⅱ型肺泡上皮细胞钠-钾泵的研究

目的 临床认为肺水肿已成为肺移植过程中的最大障碍 ,近年来资料表明 :过量肺泡液的吸收与 型肺泡上皮细胞 Na+的跨膜能力有关 ,保存中若能保持肺上皮 Na+- K+- ATPase的活性 ,对成功的肺移植是非常必要的 ,本实验研究0℃、 4℃ Kyoto- 1(New ET- K)保存液保存供体肺脏 , 型肺泡上皮细胞 Na+- K+- ATPase的活性变化 ,为 Kyoto- 1在临床上最大时限地保存供体肺提供基础理论依据。方法 取 Wistar大白鼠 ,随机分为对照组和实验组 ,对照组取新鲜肺脏 ,实验组分别灌注 0℃、 4℃的 Kyoto- 1保存液 ,分别放入 0℃、 4℃冰箱中保存 4h、 2 4h、 48h,进行光、电镜酶组织化学研究 ,使用图像分析系统进行定量测定。结果 4℃、 2 4h实验组钠泵活性可以得到较好的保存 (P>0 .0 5 )。结论 钠泵可以作为检测供肺保存质量的重要指标。

Kyoto-1保存液中移植用肺钙泵活性的研究

目的 :研究不同温度Kyoto 1(NewET K)保存液保存供体肺脏 ,不同时间内钙泵活性的变化 ,为Ky oto 1在临床上最大时限地保存供体肺提供理论依据。方法 :Wistar大鼠对照组取新鲜肺脏 ,实验组分别灌注 0℃ ,4℃的Kyoto 1保存液 ,分别放入 0℃ ,4℃冰箱中保存 4 ,2 4 ,4 8h ,进行光、电镜酶组织化学研究 ,使用图像分析系统进行定量测定。结果 :4℃ ,2 4h钙泵活性可以得到较好的保存 (P >0 .0 5 )。结论 :Kyoto 1保存供体肺 ,4℃钙泵活性可以较好的保存 2 4h。钙泵可以作为检测供肺优质保存的重要指标。

Endoscopic Kyoto classification of Helicobacter pylori infection and gastric cancer risk diagnosis

Recent advances in endoscopic technology allow detailed observation of the gastric mucosa.Today,endoscopy is used in the diagnosis of gastritis to determine the presence/absence of Helicobacter pylori(H.pylori)infection and evaluate gastric cancer risk.In 2013,the Japan Gastroenterological Endoscopy Society advocated the Kyoto classification,a new grading system for endoscopic gastritis.The Kyoto classification organized endoscopic findings related to H.pylori infection.The Kyoto classification score is the sum of scores for five endoscopic findings(atrophy,intestinal metaplasia,enlarged folds,nodularity,and diffuse redness with or without regular arrangement of collecting venules)and ranges from 0 to 8.Atrophy,intestinal metaplasia,enlarged folds,and nodularity contribute to gastric cancer risk.Diffuse redness and regular arrangement of collecting venules are related to H.pylori infection status.In subjects without a history of H.pylori eradication,the infection rates in those with Kyoto scores of 0,1,and≥2 were 1.5%,45%,and 82%,respectively.A Kyoto classification score of 0 indicates no H.pylori infection.A Kyoto classification score of 2 or more indicates H.pylori infection.Kyoto classification scores of patients with and without gastric cancer were 4.8 and 3.8,respectively.A Kyoto classification score of 4 or more might indicate gastric cancer risk.

Endoscopy-based Kyoto classification score of gastritis related to pathological topography of neutrophil activity

BACKGROUND Endoscopy-based Kyoto classification for gastritis and pathological topographic distribution of neutrophil infiltration are correlated with gastric cancer risk.AIM To investigate the association between Kyoto classification and the topographic distribution of neutrophil activity.METHODS Kyoto classification score,ranging from 0 to 8,consisted of atrophy,intestinal metaplasia,enlarged folds,nodularity,and diffuse redness.Neutrophil activity was scored according to the updated Sydney System using biopsy samples obtained from the greater curvature of the corpus and the antrum.The participants were divided into four categories,inactive stomach,antrumpredominant gastritis,pangastritis,and corpus-predominant gastritis,based on the topographic distribution of neutrophil activity.Effects of sex,age,body mass index,drinking habit,smoking habit,family history of gastric cancer,serum Helicobacter pylori(H.pylori)antibody,and Kyoto score on topography of neutrophil infiltration were analyzed.RESULTS A total of 327 patients(comprising 50.7%women,with an average age of 50.2 years)were enrolled in this study.H.pylori infection rate was 82.9%with a mean Kyoto score of 4.63.The Kyoto score was associated with the topographic distribution of neutrophil activity.Kyoto scores were significantly higher in the order of inactive stomach,antrum-predominant gastritis,pangastritis,and corpuspredominant gastritis(3.05,4.57,5.21,and 5.96,respectively).Each individual score of endoscopic findings(i.e.,atrophy,intestinal metaplasia,enlarged folds,nodularity,and diffuse redness)was correlated with the topographic distribution of neutrophil activity.On multivariate analysis,the Kyoto score,age,and serum H.pylori antibody were independently associated with the topographic distribution of neutrophil activity.CONCLUSION The Kyoto classification score was associated with the topographic distribution of neutrophil activity.

GHG emission reductions and costs to achieve Kyoto target

Emission projection and marginal abatement cost curves(MACs) are the central components of any assessment of future carbon market, such as CDM (clean development mechanism) potentials, carbon quota price etc. However, they are products of very complex, dynamic systems driven by forces like population growth, economic development, resource endowments, technology progress and so on. The modeling approaches for emission projection and MACs evaluation were summarized, and some major models and their results were compared. Accordingly, reduction and cost requirements to achieve the Kyoto target were estimated. It is concluded that Annex I Parties' total reduction requirements range from 503—1304 MtC with USA participation and decrease significantly to 140—612 MtC after USA's withdrawal. Total costs vary from 21—77 BUSD with USA and from 5—36 BUSD without USA if only domestic reduction actions are taken. The costs would sharply reduce while considering the three flexible mechanisms defined in the Kyoto Protocol with domestic actions' share in the all mitigation strategies drops to only 0—16%.

Kyoto classification in patients who developed multiple gastric carcinomas after Helicobacter pylori eradication

BACKGROUND Endoscopic Kyoto classification predicts gastric cancer risk;however,the score in the patients with primary gastric cancer after Helicobacter pylori(H.pylori)eradication therapy is unknown.AIM To elucidate the Kyoto classification score in patients with both single gastric cancer and multiple gastric cancers developed after H.pylori eradication.METHODS The endoscopist recorded the Kyoto classification at the endoscope and the Kyoto classification score at the time of the first diagnosis of gastric cancer after H.pylori eradication.The score was compared between single gastric cancer group and multiple gastric cancers group.RESULTS The Kyoto score at the time of diagnosis of 45 cases of gastric cancer after H.pylori eradication was 4.0 points in average.The score was 3.8 points in the single gastric cancer group,and 5.1 points in the multiple gastric cancers group.The multiple group had a significantly higher score than the single group(P=0.016).In the multiple gastric cancers group,all the patients(7/7)had 5 or higher Kyoto score,while in single gastric cancer group,the proportion of patients with a score of 5 or higher was less than half,or 44.7%(17/38).CONCLUSION Patients diagnosed with gastric cancer after H.pylori eradication tended to have advanced gastritis.In particular,in cases of multiple gastric cancers developed after H.pylori eradication,the endoscopic Kyoto classification score tended to be 5 or higher in patients with an open type atrophic gastritis and the intestinal metaplasia extended to the corpus.

Comparison of endoscopic gastritis based on Kyoto classification between diffuse and intestinal gastric cancer

BACKGROUND Gastric cancers can be categorized into diffuse-and intestinal-type cancers based on the Lauren histopathological classification.These two subtypes show distinct differences in metastasis frequency,treatment application,and prognosis.Therefore,accurately assessing the Lauren classification before treatment is crucial.However,studies on the gastritis endoscopy-based Kyoto classification have recently shown that endoscopic diagnosis has improved.AIM To investigate patient characteristics including endoscopic gastritis associated with diffuse-and intestinal-type gastric cancers in Helicobacter pylori(H.pylori)-infected patients.METHODS Patients who underwent esophagogastroduodenoscopy at the Toyoshima Endoscopy Clinic were enrolled.The Kyoto classification included atrophy,intestinal metaplasia,enlarged folds,nodularity,and diffuse redness.The effects of age,sex,and Kyoto classification score on gastric cancer according to the Lauren classification were analyzed.We developed the Lauren predictive background score based on the coefficients of a logistic regression model using variables independently associated with the Lauren classification.Area under the receiver operative characteristic curve and diagnostic accuracy of this score were examined.RESULTS A total of 499 H.pylori-infected patients(49.6%males;average age:54.9 years)were enrolled;132 patients with gastric cancer(39 diffuse-and 93 intestinal-type cancers)and 367 cancer-free controls were eligible.Gastric cancer was independently associated with age≥65 years,high atrophy score,high intestinal metaplasia score,and low nodularity score when compared to the control.Factors independently associated with intestinal-type cancer were age≥65 years(coefficient:1.98),male sex(coefficient:1.02),high intestinal metaplasia score(coefficient:0.68),and low enlarged folds score(coefficient:-1.31)when compared to diffuse-type cancer.The Lauren predictive background score was defined as the sum of+2(age≥65 years),+1(male sex),+1(endoscopic intestinal metaplasia),and-1(endoscopic enlarged folds)points.Area under the receiver operative characteristic curve of the Lauren predictive background score was 0.828 for predicting intestinal-type cancer.With a cut-off value of+2,the sensitivity,specificity,and accuracy of the Lauren predictive background score were 81.7%,71.8%,and 78.8%,respectively.CONCLUSION Patient backgrounds,such as age,sex,endoscopic intestinal metaplasia,and endoscopic enlarged folds are useful for predicting the Lauren type of gastric cancer.

THE THIRD WFAS GENERAL ASSEMBLY AND THIRD WORLD CONFERENCE ON ACUPUNCTURE HAVE COME TO A SUCCESSFUL CLOSE AT KYOTO

The Third WFAS General Assembly and the Third World Conference on Acupuncture were heldat Kyoto,Japan,from Nov.20 to 23,1993.80 representatives and observers from 22 countries andregions attended the assembly.Dr.Zhang Xiaorui,responsible for division programma of TraditionalMedicine was invited to this assembly.The Third WFAS Executive Committee was elected by secretballot voting.Chen Shaowu,the vice-president of Chinese Association of Acupuncture and Moxibus-tion,the President of the China-Japan Friendship Hospital,was elected as the president of WFAS^Deng Liangyue,the stating member of Chinese Association of Zhenjiu,the Director of Institute

Kyoto classification of gastritis:Advances and future perspectives in endoscopic diagnosis of gastritis

This editorial provides an update of the recent evidence on the endoscopy-based Kyoto classification of gastritis,clarifying the shortcomings of the Kyoto classification,and providing prospects for future research,with particular focus on the histological subtypes of gastric cancer(GC)and Helicobacter pylori(H.pylori)infection status.The total Kyoto score is designed to express GC risk on a score ranging from 0 to 8,based on the following five endoscopic findings:Atrophy,intestinal metaplasia(IM),enlarged folds(EF),nodularity,and diffuse redness(DR).The total Kyoto score reflects H.pylori status as follows:0,≥2,and≥4 indicate a normal stomach,H.pylori-infected gastritis,and gastritis at risk for GC,respectively.Regular arrangement of collecting venules(RAC)predicts noninfection;EF,nodularity,and DR predict current infection;map-like redness(MLR)predicts past infection;and atrophy and IM predict current or past infection.Atrophy,IM,and EF all increase the incidence of H.pylori-infected GC.MLR is a specific risk factor for H.pylori-eradicated GC,while RAC results in less GC.Diffuse-type GC can be induced by active inflammation,which presents as EF,nodularity,and atrophy on endoscopy,as well as neutrophil and mononuclear cell infiltration on histology.In contrast,intestinal-type GC develops via atrophy and IM,and is consistent between endoscopy and histology.However,this GC risk-scoring design needs to be improved.

Contribution of Forest Management Credits in Kyoto Protocol Compliance and Future Perspectives

Article 3 paragraph 3 and paragraph 4 of the Kyoto Protocol （KP） allow parties to use credits from land-based activities for offsetting their emission reduction/limitation target committed in the KP. Forest management （FM） is the dominant activity accounted by Annex I parties of the United Nation Framework Convention on Climate Change in the first commitment period of KP （2008-2012）. Data reported for 2008 and 2009 indicate that over half of the emission reduction target of 24 Annex I parties that expect to use FM removals can be offset by FM credits in the first commitment period. EspeciMly the majority of the emission reduction target of Slovenia, Sweden, Latvia, Finland, Japan, and Croatia may be achieved through FM credits. The total FM CAP as contained in decision 16/CMP.1 in the first commitment period was over-estimated significantly by 50% for all KP parties and 36% for parties that elected FM. Some parties such as Russia, Japan, Italy, Germany, and Switzerland that elected FM activity may benefit largely from the over-estimated CAP. Presuming a significant increase of the harvest rate, the FM reference level （FMRL） for 2013-2020 is only 1/5 of the historical mean value of FM removals even though most parties show an increasing or a steady trend of net removals from 1990 to 2009. As a result Annex I parties would be able to use FM credits in the future that are over 4 times of FM CAP in the first commitment period. This potentiM FM credit would account for 7.7% of total emissions by sources without land use, land-use change and forestry activities （LULUCF） in the base year or 1990, and more Annex I parties would share the ＂benefit＂ from the FMRL accounting approach.

Restructuring the Reduced Emissions from Deforestation and Forest Degradation (REDD+) Mechanism for a Post Kyoto Agreement

With the possibility of a new climate agreement being formed in 2015 at COP 21 in Paris, there is a vital need to restructure REDD+ for formal inclusion into such an agreement. There are two vital questions that need to be assessed if REDD+ is to be effective as a policy tool within the United Nations Framework Convention on Climate Change (UNFCCC). First, can REDD+ be financially self-sustaining if it remains as a fund based mechanism or will a market based system be more effective? Second, will REDD+ remain primarily a carbon offsetting mechanism or can it also deliver co-benefits (poverty alleviation, biodiversity conservation, and promoting indigenous rights protection)?

Analysis of the Causes of Australia’s Attitude towards Kyoto Protocol--From Howard to Rudd Government

As the country with the highest per capita carbon emissions in the world,Australia’s government,represented by Howard,refused to sign the Kyoto Protocol due to various factors,however,this attitude has undergone a great transformation after the government represented by Kevin Rudd took office,not only to comply with the trend of the times,but also by other factors.This paper will analyze the reasons for the Australian government’s attitude toward the Kyoto Protocol during the Howard and Rudd periods,in order to make some contributions to the environmental protection of other countries.

酒精性肝炎自噬关键基因的筛选及生物信息学分析

目的筛选酒精性肝炎(AH)的自噬关键基因,探讨AH潜在的生物标志物和治疗靶点。方法采用基因表达综合数据库(GEO)中的2个AH基因芯片和从MSigDB、GeneCards数据库中获得的自噬相关数据集,通过加权基因共表达网络分析(WGCNA)获取关键基因。对筛选的关键基因进行基因本体(GO)、京都基因和基因组百科全书(KEGG)功能富集分析,蛋白质相互作用(PPI)分析,免疫浸润分析,构建信使RNA(mRNA)-微小RNA(miRNA)网络,进行酒精性肝病不同分期的自噬相关关键基因的表达差异分析,并进一步通过实时荧光定量逆转录聚合酶链反应(RT-qPCR)在AH患者和小鼠肝脏组织中验证。结果本研究筛选得到了11个与AH自噬相关的基因(EEF1A2、CFTR、SOX4、TREM2、CTHRC1、HSPB8、TUBB3、PRKAA2、RNASE1、MTCL1、HGF),均为上调基因。在AH患者和小鼠肝脏组织中,SOX4、TREM2、HSPB8、PRKAA2在AH组中的相对表达量均高于对照组。结论SOX4、TREM2、HSPB8、PRKAA2可能是AH潜在的生物标志物和治疗靶点。

Transcriptomic and bioinformatics analysis of the mechanism by which erythropoietin promotes recovery from traumatic brain injury in mice

Recent studies have found that erythropoietin promotes the recovery of neurological function after traumatic brain injury.However,the precise mechanism of action remains unclea r.In this study,we induced moderate traumatic brain injury in mice by intrape ritoneal injection of erythro poietin for 3 consecutive days.RNA sequencing detected a total of 4065 differentially expressed RNAs,including 1059 mRNAs,92 microRNAs,799 long non-coding RNAs,and 2115circular RNAs.Kyoto Encyclopedia of Genes and Genomes and Gene Ontology analyses revealed that the coding and non-coding RNAs that were differentially expressed after traumatic brain injury and treatment with erythropoietin play roles in the axon guidance pathway,Wnt pathway,and MAPK pathway.Constructing competing endogenous RNA networks showed that regulatory relationship between the differentially expressed non-coding RNAs and mRNAs.Because the axon guidance pathway was repeatedly enriched,the expression of Wnt5a and Ephb6,key factors in the axonal guidance pathway,was assessed.Ephb6 expression decreased and Wnt5a expression increased after traumatic brain injury,and these effects were reversed by treatment with erythro poietin.These findings suggest that erythro poietin can promote recove ry of nerve function after traumatic brain injury through the axon guidance pathway.

RNA sequencing of exosomes secreted by fibroblast and Schwann cells elucidates mechanisms underlying peripheral nerve regeneration

Exosomes exhibit complex biological functions and mediate a variety of biological processes,such as promoting axonal regeneration and functional recove ry after injury.Long non-coding RNAs(IncRNAs)have been reported to play a crucial role in axonal regeneration.Howeve r,the role of the IncRNA-microRNAmessenger RNA(mRNA)-competitive endogenous RNA(ceRNA)network in exosome-mediated axonal regeneration remains unclear.In this study,we performed RNA transcriptome sequencing analysis to assess mRNA expression patterns in exosomes produced by cultured fibroblasts(FC-EXOs)and Schwann cells(SCEXOs).Diffe rential gene expression analysis,Gene Ontology analysis,Kyoto Encyclopedia of Genes and Genomes analysis,and protein-protein intera ction network analysis were used to explo re the functions and related pathways of RNAs isolated from FC-EXOs and SC-EXOs.We found that the ribosome-related central gene Rps5 was enriched in FC-EXOs and SC-EXOs,which suggests that it may promote axonal regeneration.In addition,using the miRWalk and Starbase prediction databases,we constructed a regulatory network of ceRNAs targeting Rps5,including 27 microRNAs and five IncRNAs.The ceRNA regulatory network,which included Ftx and Miat,revealed that exsosome-derived Rps5 inhibits scar formation and promotes axonal regeneration and functional recovery after nerve injury.Our findings suggest that exosomes derived from fibro blast and Schwann cells could be used to treat injuries of peripheral nervous system.

京都胃炎分类评分在胃镜下识别未分化型与分化型胃癌的价值

目的探讨京都胃炎分类评分对未分化型和分化型胃癌的区分价值,并基于此,建立内镜下区分未分化型胃癌的预测评分系统。方法回顾性分析该院第六医学中心确诊的183例胃癌患者的临床资料,根据病理分为分化组(95例)和未分化组(88例)。比较两组患者年龄、性别和京都胃炎分类评分等,通过二元Logistic回归分析筛选未分化型胃癌相关因素,并基于得到的比值比(OR),建立未分化型胃癌预测评分系统,绘制受试者操作特征曲线(ROC curve)。结果与分化组比较,未分化组萎缩评分、肠上皮化生评分、弥漫性发红评分和京都胃炎分类评分总分较低(P<0.01)。年龄<55岁(P<0.05)、女性(P<0.05)和胃黏膜C1萎缩或无萎缩(P<0.01)与未分化型胃癌独立相关。建立的未分化型胃癌预测评分系统,区分未分化型胃癌的曲线下面积(AUC)为0.881(95%CI:0.828~0.934),最佳截断值的敏感度为80.70%,特异度为90.50%。结论未分化型和分化型胃癌患者京都胃炎分类评分有差异,建立的未分化型胃癌预测评分系统,对区分未分化型胃癌有一定的价值。

Non-improvement of atrophic gastritis in cases of gastric cancer after successful Helicobacter pylori eradication therapy

BACKGROUND Helicobacter pylori(H.pylori)infection is closely related to the development of gastric cancer(GC).However,GC can develop even after H.pylori eradication.Therefore,it would be extremely useful if GC could be predicted after eradication.The Kyoto classification score for gastritis(GA)is closely related to cancer risk.However,how the score for GC changes after eradication before onset is not well understood.AIM To investigate the characteristics of the progression of Kyoto classification scores for GC after H.pylori eradication.METHODS Eradication of H.pylori was confirmed in all patients using either the urea breath test or the stool antigen test.The Kyoto classification score of GC patients was evaluated by endoscopy at the time of event onset and three years earlier.In ad-dition,the modified atrophy score was evaluated and compared between the GC group and the control GA group.RESULTS In total,30 cases of early GC and 30 cases of chronic GA were evaluated.The pathology of the cancer cases was differentiated adenocarcinoma,except for one case of undifferentiated adenocarcinoma.The total score of the Kyoto classifi-cation was significantly higher in the GC group both at the time of cancer onset and three years earlier(4.97 vs 3.73,P=0.0034;4.2 vs 3.1,P=0.0035,respectively).The modified atrophy score was significantly higher in the GC group both at the time of cancer onset and three years earlier and was significantly improved only in the GA group(5.3 vs 5.3,P=0.5;3.73 vs 3.1,P=0.0475,respectively).CONCLUSION The course of the modified atrophy score is useful for predicting the onset of GC after eradication.Patients with severe atrophy after H.pylori eradication require careful monitoring.

狩野直喜与京都学派中国俗文学研究体系的创建

作为京都学派的开山鼻祖之一,狩野直喜借鉴欧洲汉学的俗文学研究理念,深入细致地爬梳中国戏曲小说的文献资料,创建一个系统完善的中国俗文学研究体系。他在纯文学观念的基础上充分肯定小说、戏曲等俗文学的价值,运用文学史理念基本澄清中国小说、戏曲的发展源流与文类特征演变。经过狩野直喜与其后辈学者薪火相传的学术推进,形成文学史视野、版本考证、文本细读三个方面密切结合的研究格局,把中国俗文学研究提升到一个全新的高度。