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Topic Review
The Human Gut Microbiome in Autism Spectrum Disorder
Autism spectrum disorder (ASD) is a complicated neurodevelopmental disorder characterized by decreased verbal and social interactions, limited interests and activities, and repetitive behaviors. Along with these significant conditions, ASD regularly co-occurs with other clinical symptoms, including gastrointestinal disturbances (up to 70%), motor deficits (79%), sleep problems (50–80%), and intellectual disability (45%). The high prevalence of gastrointestinal (GI) disorders among autism spectrum disorder (ASD) patients has prompted scientists to look into the gut microbiota as a putative trigger in ASD pathogenesis.
  • 1.1K
  • 02 Mar 2022
Topic Review
The Gut Microbiome and Female Health
Given that females may be more likely to be affected by some ailments such as osteoarthritis, heart disease, cancer, and anxiety, it is imperative to study the effect of the gut microbiome and its role in female health. It is evident that the presence/ratio of microbial species is altered in polycystic ovarian syndrome, cancer, pregnancy, and menopause. Thus, potential probiotics should be developed and the administration of certain bacterial species should be considered, as novel independent or adjunct therapies for various female-related pathologies.
  • 412
  • 30 Nov 2022
Topic Review
The Effect of COVID-19 on Gut Microbiota
The COVID-19 pandemic caused by the SARS-CoV-2 virus has led to significant global health implications. Although the respiratory manifestations of COVID-19 are widely recognized, emerging evidence suggests that the disease may also significantly affect the gut microbiota, the intricate community of bacteria that lives within the gastrointestinal system.
  • 93
  • 22 Aug 2023
Topic Review
The Contrast-Enhanced Harmonic Endoscopic Ultrasonography Fine-Needle Aspiration Technique
Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is useful for the diagnosis of pancreatic masses. According to three meta-analyses, the sensitivity, specificity, and accuracy of EUS-FNA are 84–92%, 96–98%, and 86–91%, respectively. However, the occurrence of false-negative and false-positive results indicates that the diagnostic performance of EUS-FNA needs to be improved. Contrast-enhanced harmonic endoscopic ultrasonography (CH-EUS) is used for the characterization of pancreatic masses and can be applied to improve the performance of EUS-FNA. 
  • 235
  • 20 Apr 2023
Topic Review
The Applications of Colonic Transendoscopic Enteral Tubing
The limitation of traditional delivery methods for fecal microbiota transplantation (FMT) gave birth to colonic transendoscopic enteral tubing (TET) to address the requirement of frequent FMTs. Colonic TET as a novel endoscopic intervention has received increasing attention in practice since 2015 in China. Emerging studies from multiple centers indicate that colonic TET is a promising, safe, and practical delivery method for microbial therapy and administering medication with high patient satisfaction.
  • 505
  • 06 Feb 2023
Topic Review
TGR5
Takeda G protein-coupled receptor (TGR5) is a metabolic regulator, which is also involved in inflammatory responses. TGR5 belongs to the G protein-coupled receptor (GPCR) superfamily.
  • 460
  • 02 Aug 2021
Topic Review
TGF-β, Activin and Follistatin in Inflammatory Bowel Disease
Inflammatory bowel disease (IBD) is an immune-mediated inflammatory condition predominantly affecting the gastrointestinal (GI) tract. An increasing prevalence of IBD has been observed globally. The pathogenesis of IBD includes a complex interplay between the intestinal microbiome, diet, genetic factors and immune responses. The consequent imbalance of inflammatory mediators ultimately leads to intestinal mucosal damage and defective repair. Growth factors, given their specific roles in maintaining the homeostasis and integrity of the intestinal epithelium, are of particular interest in the setting of IBD. Furthermore, direct targeting of growth factor signalling pathways involved in the regeneration of the damaged epithelium and the regulation of inflammation could be considered as therapeutic options for individuals with IBD. Several members of the transforming growth factor (TGF)-β superfamily, particularly TGF-β, activin and follistatin, are key candidates as they exhibit various roles in inflammatory processes and contribute to maintenance and homeostasis in the GI tract. 
  • 224
  • 05 May 2023
Topic Review
Technical Challenges to TIPS and Modifications in Approach
TIPS involves creating an artificial conduit between the hepatic and portal veins to decrease the portal pressure and resolve the associated complications of portal hypertension. The procedure has traditionally been performed under fluoroscopic guidance with or without wedge portography or carbon dioxide angiography to delineate the portal venous branches. In patients with anatomically challenging scenarios such as chronic portal vein thrombosis, traditional TIPS procedure methods may not prove technically successful. 
  • 365
  • 19 Dec 2022
Topic Review
TDM optimize anti-TNF biologic treatment
The goal of therapeutic drug monitoring (TDM) is to optimize anti-TNF (tumor necrosis factor) biologic treatment in patients with inflammatory bowel disease (IBD). Although commercial assays are readily available for both ustekinumab and vedolizumab, the use of TDM with these newer biologic medications is at its infancy. 
  • 353
  • 30 Mar 2021
Topic Review
Targeting Gut in Obesity: Signals from Inner Surface
Obesity is caused by prolonged energy surplus. Current anti-obesity medications are mostly centralized around the energy input part of the energy balance equation by increasing satiety and reducing appetite. Our gastrointestinal tract is a key organ for regulation of food intake and supplies a tremendous number of circulating signals that modulate the activity of appetite-regulating areas of the brain by either direct interaction or through the vagus nerve. Intestinally derived messengers are manifold and include absorbed nutrients, microbial metabolites, gut hormones and other enterokines, collectively comprising a fine-tuned signalling system to the brain. After a meal, nutrients directly interact with appetite-inhibiting areas of the brain and induce satiety. However, overall feeding behaviour also depends on secretion of gut hormones produced by highly specialized and sensitive enteroendocrine cells. Moreover, circulating microbial metabolites and their interactions with enteroendocrine cells further contribute to the regulation of feeding patterns. Current therapies exploiting the appetite-regulating properties of the gut are based on chemically modified versions of the gut hormone, glucagon-like peptide-1 (GLP-1) or on inhibitors of the primary GLP-1 inactivating enzyme, dipeptidyl peptidase-4 (DPP-4). The effectiveness of these approaches shows that that the gut is a promising target for therapeutic interventions to achieve significant weigh loss. 
  • 512
  • 24 Jan 2022
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