Gut microbiota dysbiosis in Chinese children with type 1 diabetes mellitus:An observational study

BACKGROUND Gut microbiota dysbiosis is reportedly actively involved in autoimmune diseases such as type 1 diabetes mellitus(T1DM).However,the alterations in the gut microbiota and their correlation with fasting blood glucose(FBG)in Chinese children with T1DM remain unclear.AIM To investigate alterations in the gut microbiota in Chinese children with T1DM and their associations with clinical indicators.METHODS Samples from 51 children with T1DM and 47 age-matched and gender-matched healthy controls were obtained,to explore the structural and functional alterations in the fecal microbiota.The V3-V4 regions of the 16S rRNA gene were sequenced on a MiSeq instrument,and the association with FBG were analyzed.RESULTS We found that the bacterial diversity was significantly increased in the T1DMassociated fecal microbiota,and changes in the microbial composition were observed at different taxonomic levels.The T1DM-reduced differential taxa,such as Bacteroides vulgatus ATCC8482,Bacteroides ovatus,Bacteroides xylanisolvens,and Flavonifractor plautii,were negatively correlated with FBG,while the T1DMenriched taxa,such as Blautia,Eubacterium hallii group,Anaerostipes hadrus,and Dorea longicatena,were positively correlated with FBG.Bacteroides vulgatus ATCC8482,Bacteroides ovatus,the Eubacterium hallii group,and Anaerostipes hadrus,either alone or in combination,could be used as noninvasive diagnostic biomarkers to discriminate children with T1DM from healthy controls.In addition,the functional changes in the T1DM-associated fecal microbiota also suggest that these fecal microbes were associated with altered functions and metabolic activities,such as glycan biosynthesis and metabolism and lipid metabolism,which might play vital roles in the pathogenesis and development of T1DM.CONCLUSION Our present comprehensive investigation of the T1DM-associated fecal microbiota provides novel insights into the pathogenesis of the disease and sheds light on the diagnosis and treatment of T1DM.

Successful opening in-stent chronic total occlusion lesion of coronary artery by excimer laser coronary angioplasty

In percutaneous coronary intervention (PCI), chronic total occlusion (CTO) coronary artery disease still remains difficult to treat. One of the reasons for the failure is the hard of the CTO lesions that balloon is difficult to pass through or expand. Previous methods to deal with CTO lesions that cannot be passed by balloon, include selecting reinforced catheter (such as 5 in 6 guiding catheter, Guidzilla catheter, or Tornus microcatheter), guidewire extrusion or rotary grinding technology. In recent years, excimer laser coronary angioplasty (ELCA) has been gradually applied to CTO lesions. Using inert halide as the laser medium, ELCA emits a 308 nm high-intensity unidirectional light wave with absorption depth of only 50 μmL, resulting in less thermal effect and less damage to non-target lesions. In this paper, we will describe a successful PCI case of an in-stent CTO lesion using ELCA with long term coronary angiography follow-up.

Correction to“Gut microbiota dysbiosis in Chinese children with type 1 diabetes mellitus:An observational study”

Liu X,Cheng YW,Shao L,Sun SH,Wu J,Song QH,Zou HS,Ling ZX.Gut microbiota dysbiosis in Chinese children with type 1 diabetes mellitus:An observational study.World J Gastroenterol 2021;27(19):2394-2414[PMID:34040330 DOI:10.3748/wjg.v27.i19.2394].In this article,the affiliation of the first author was wrong.Xia Liu,the first author,belonged to Department of Intensive Care Unit,The First Affiliated Hospital,School of Medicine,Zhejiang University,Hangzhou,310003,China.