Objective To explore the relationship between haptoglobin gene polymorphism and disease se-verity and susceptibility in senile vascular dementia patients.Methods A total of 80 patients with senile vas-cular dementia admitted to the hospital from February 2018 to February 2023 were selected as the vascular de-mentia group,and 80 stroke patients with non-vascular dementia admitted to the hospital during the same pe-riod were selected as the control group.The genotype distribution and allele frequency of haptoglobin gene were measured using polymerase chain reaction with sequence-specific primers,and their relationship with the severity and susceptibility of vascular dementia patients was analyzed.Results The proportion of history of hyperlipidemia and diabetes mellitus and the levels of total cholesterol and triglyceride in vascular dementia group were higher than those in control group,the differences were statistically significant(P＜0.05).The distribution of genotypes was in Hardy-Weinberg equilibrium(P＞0.05).The frequency of haptoglobin 2-2 genotype and haptoglobin 2 allele in vascular dementia group were higher than those in control group,and the differences were statistically significant(P＜0.05).There were significant differences in the scores of mini-mental state examination and hachinski ischaemic score among patients with vascular dementia with different haptoglobin genotypes(P＜0.05).Multivariate Logistic regression analysis showed that the carrier of hapto-globin 2-2 genotype and the carrier of haptoglobin 2 allele were independent risk factors for vascular dementia(P＜0.05).Conclusion Haptoglobin 2-2 genotype and haptoglobin 2 allele distribution frequency are associ-ated with the occurrence of vascular dementia after stroke,and those with high frequency of haptoglobin 2-2 genotype and haptoglobin 2 allele distribution suffer a severe disease,which can provide reference for early i-dentification and assessment of vascular dementia.

Objective:To critically evaluate and summarize the methodological quality of systematic reviews(SRs)and present objective and important outcomes on the effectiveness of traditional Chinese medicine(TCM)therapies,including Chinese herbal medicine(CHM),acupuncture,and moxibustion,for diarrhea-predominant irritable bowel syndrome(IBS-D).Methods:We conducted a comprehensive literature search for SRs in 7 databases until April 16,2022.Two reviewers independently extracted data and assessed the methodological quality of the reviews according to the Assessing the Methodological Quality of Systematic Reviews 2(AMSTAR-2),the Risk of Bias in Systematic reviews(ROBIS)tool,and the Preferred Reporting Item for Systematic Review and Meta-analysis(PRISMA)statement.The Grading of Recommendations,Assessment,Development,and Evaluation(GRADE)was used to rate the quality of evidence.Results:IBS-D patients included in 12 reviews were diagnosed in accordance with the Rome criteria,9 reviews focused on CHM,2 articles observed moxibustion and heat-sensitive moxibustion,1 article studied acupuncture and CHM.The outcomes of the SRs were the effectiveness rate,the total effectiveness rate,global symptom improvement,and adverse effects.Based on AMSTAR-2,which measures the quality of methodology,all of the included studies were of low or critically low quality.According to the ROBIS tool,10 SRs(83.33％)had a high risk of bias.With the PRISMA checklist,only 3 SRs reached over 90％compliance.Based on GRADE,most evidence was of low quality,and there was a moderate quality of evidence that the effectiveness rate of modified-Tongxie Yaofang was superior to Western medicine in the treatment of IBS-D.Conclusion:Given the suboptimal reporting and methodological quality of existing SRs,more studies are needed to clarify whether TCM therapies are more effective or safe than pharmacological medicine.Future studies should combine evidence-based medicine with TCM research according to the charac-teristics of TCM.

Gastric ulcer is a common digestive system disease,and the long-term use of non-steroidal anti-inflammatory drugs(NSAIDs)is the second most important cause.NSAID-induced gastric ulcer animal models are key experimental tools for studying the pathogenesis,corresponding treatment method,and effective mechanisms of NSAID-induced gastrointestinal injury.However,there are currently a lack of reviews on NSAID-induced gastric ulcer animal models.This review summarizes and compares the relevant literature on animal research into indomethacin-and aspirin-induced gastric ulcers in the past 10 years,including the selection of experimental animals,drug solvents,and specific modeling method.The limitations of current models,such as the cumbersome modeling method,incomplete modeling details,inadequate models for clinical use,and lack of comparative drug research,are discussed.Feasible solutions are proposed with the aim of providing an effective reference for research in this field.