Comparison of the performance of MS enteroscope series and Japanese double-and single-balloon enteroscopes

BACKGROUND Small intestine disease endangers human health and is not easy to locate and diagnose.AIM To observe the effect of the MS series of small intestine endoscopes on the gastrointestinal tract,the changes in serum gastrin levels and intestinal tissue,and the time required for the examination.METHODS In vivo experiments in 20 Living pigs were conducted,Bowel preparation was routinely performed,Intravenous anesthesia with propofol and ketamine was applied,the condition of the small intestine was observed and the detection time of the MS series of small intestine endoscopes were recorded,The changes in intestinal tissue using the MS series of small intestine endoscopes observed and compared before and after the examination,Venous blood(3-5 mL)from pigs was collected before and after the experiment;changes in intestinal tissue after use of the MS series of small intestine endoscopes observed after examination.After completion of each type of small intestine endoscope experiment,the pigs were allowed to rest and the next type of small intestine endoscope experiment was performed after 15 days of normal feeding.The detection time data of the single-balloon small intestine endoscope and doubleballoon small intestine endoscope were collected from four hospitals.RESULTS One case of Ascarislumbricoides,one of suspected Crohn’s disease,one small intestinal diverticulum and one anesthesia accident were observed in pigs.The small intestine showed no differences in the MS series of small intestine endoscopes and there were no differences in serum gastrin between the groups(P>0.05).The time required for inspection was recorded,and the overall detection time for the Japanese small intestine endoscopes was approximately 1.68±0.16 h.CONCLUSION Intestinal ascariasis is a common disease in pigs.Some pigs have abnormal intestinal variation.After continuous upgrade and improvement,the MS-3 and MS-4 small intestine endoscope appear superior in terms of detection time.

Factors that Affect the Frequency of HIV Testing in College Men Who Have Sex with Men--Northeast China,2017-2018

Summary What is already known about this topic?Human immunodeficiency virus(HIV)testing is a critical tool in reducing HIV transmission among men who have sex with men(MSM);young MSM frequently use mobile phone applications and participate in social hook-ups.

HIV-Positive Men Are More Likely to Be Hyper Linked Within College Student Social Network-Northeast China,2017-2018

What is already known about this topic?Men who have sex with men(MSM)bear a disproportionate burden of new human immunodeficiency virus(HIV)infections and young MSM demonstrate parallel internet-driven HIV incident infection and dynamic social network.What is added by this report?The HIV positive prevalence and incidence among college MSM were 3.8%and 2.9 per 100 person-years,respectively,while these rates were 13.9%and 10.5 per 100 person-years,respectively,among their social contacts.The overall HIV positive prevalence was 7.2%in Northeast China.HIV-positive MSM have comparatively more social contacts than HIVseronegative MSM.What are the implications for public health practice?Hyper-linkages found in app-based social networks play an important role in HIV transmission via risky sexual behavior and suggest options for online intervention to promote HIV prevention.