Help
Subscribe


Submit Videos to GastroHep Read For FREE - Our full range of review articles
GastroHep.com - the global online resource for all aspects of gastroenterology, hepatology and endoscopy
GastroHep.com - the global online resource for all aspects of gastroenterology, hepatology and endoscopy Profile of Guido Tytgat Profile of Pete Peterson Profile of Peter Cotton Profile of Roy Pounder

Home

News  
Journals
Review Articles
Slide Atlas
Video Clips
Online Books
Advanced Digestive Endoscopy
Classical Cases
Conference Diary
PubMed
International GH Links
USA GH Links
National GH Links
National GI Societies
Other Useful Links




Emails on Gastroenterology and Hepatology
the National AIDS Treatment Advocacy Project
Visit the gastroenterology section of the EUMS

News

Gut microbiota disturbance during antibiotic therapy

November's issue of Gut provides an extensive description of gut microbiota responses to follow-up β-lactam therapy.

News image

Antibiotic usage strongly affects microbial intestinal metabolism and thereby impacts human health.

Understanding this process and the underlying mechanisms remains a major research goal.

Dr Ana Elena Pérez-Cobas and colleagues from Spain conducted the first comparative omic investigation of gut microbial communities in faecal samples taken at multiple time points from an individual subjected to β-lactam therapy.

The total (16S rDNA) and active (16S rRNA) microbiota, metagenome, metatranscriptome (mRNAs), metametabolome, and metaproteome of a patient undergoing antibiotic therapy for 14 days were evaluated.

Major metabolic changes occurred at day 6
Gut

Apparently oscillatory population dynamics were observed, with an early reduction in Gram-negative organisms (day 6) and an overall collapse in diversity and possible further colonisation by ‘presumptive’ naturally resistant bacteria (day 11), followed by the re-growth of Gram-positive species (day 14).

During this process, the maximum imbalance in the active microbial fraction occurred later (day 14) than the greatest change in the total microbial fraction, which reached a minimum biodiversity and richness on day 11.

Additionally, the team noted that major metabolic changes occurred at day 6.

The research team found that gut bacteria respond to antibiotics early by activating systems to avoid the antimicrobial effects of the drugs, while ‘presumptively’ attenuating their overall energetic metabolic status, and the capacity to transport and metabolise bile acid, cholesterol, hormones and vitamins.

The team observed that host–microbial interactions significantly improved after treatment cessation.

Dr Pérez-Cobas' team concludes, "This proof-of-concept study provides an extensive description of gut microbiota responses to follow-up β-lactam therapy."

"The results demonstrate that antibiotics targeting specific pathogenic infections and diseases may alter gut microbial ecology and interactions with host metabolism at a much higher level than previously assumed."

Gut 2013; 62: 1591-1601  
16 October 2013

Go to top of page Email this page Email this page to a colleague

 03 September 2014

Advanced search
 03 September 2014 
Predictors of response in Crohn's disease
 03 September 2014 
Diagnosis of atrophic gastritis
 03 September 2014 
Safety of reinitiation of infliximab therapy
 02 September 2014 
SSRIs and depression in Hep C
 02 September 2014 
Bariatric surgery for obesity
 02 September 2014 
Eosinophilic esophagitis in adults
 01 September 2014 
Risks with anti-TNF in pediatric IBD
 01 September 2014 
Genetic variants in alcoholic liver disease
 01 September 2014 
Fecal hemoglobin and colorectal cancer screening
 29 August 2014 
Gluten-free diet for asymptomatic celiac disease
 29 August 2014 
NSAID-induced small intestinal injury and diaphragm disease
 29 August 2014 
Symptom evaluation in functional dyspepsia
 28 August 2014 
Predictoris of C. diff in out-patients
 28 August 2014 
Detection of gastroesophageal reflux symptoms
 28 August 2014 
Colorectal-cancer mortality after adenoma removal
 27 August 2014 
Endoscopy outcomes in community hospital vs tertiary academic centers
 27 August 2014 
UV exposure and IBD hospitalizations
 27 August 2014 
Hepatocellular carcinoma screening in liver disease
 26 August 2014 
NAFLD and gastroesophageal reflux symptoms
 26 August 2014 
Adalimumab-treated patients with ulcerative colitis
 26 August 2014 
Wound healing after abdominoperineal resection
 25 August 2014 
Surgical management of rectourethral fistulas
 25 August 2014 
Biomarker analysis in biopsies for ulcerative colitis
 25 August 2014 
Ileocolic resection in Crohn's disease
 22 August 2014 
Outlier identification in colorectal surgery
 22 August 2014 
Endoscopic submucosal dissection for squamous esophageal cancer
 22 August 2014 
Adherence to Rome criteria in functional dyspepsia trials
 21 August 2014 
Screening for Barrett’s esophagus
 21 August 2014 
Colorectal cancer mortality in Brazil
 21 August 2014 
Eosinophilic esophagitis
 20 August 2014 
Rectal surgery mortality
 20 August 2014 
Chemotherapy-induced gastrointestinal mucositis
 20 August 2014 
Stool methylated DNA markers and colorectal cancer resection
 19 August 2014 
Recurrent C. difficile infection in out-patients
 19 August 2014 
Racial disparities and colon cancer
 19 August 2014 
Variability of colonoscopy preparation instructions
 18 August 2014 
The evolution of urban C. difficile
 18 August 2014 
Metabolomic analysis in IBD
 18 August 2014 
Enhanced T-cell response in acute-on-chronic Hep B
 15 August 2014 
Abdominal pain in IBS
 15 August 2014 
Gene expression biomarker in ulcerative colitis
 15 August 2014 
Population-based fecal immunochemical test screening
 14 August 2014 
Transnasal vs transoral endoscopy
 14 August 2014 
Radiation exposure in gastroenterology
 14 August 2014 
Dietary fibre and diverticular disease
 13 August 2014 
Fecal immunochemical test screening
 13 August 2014 
Adherence to Rome criteria in functional dyspepsia
 13 August 2014 
Flexible sigmoidoscopy screening
 12 August 2014 
Eosinophilic esophagitis and celiac disease
 12 August 2014 
Management of Lynch syndrome
 12 August 2014 
Risk of cancer under immunosuppressive therapy in IBD
 11 August 2014 
Gut microbiota in chemotherapy-induced GI mucositis
 11 August 2014 
Risk of GI bleeds with anticoagulants
 11 August 2014 
Social media in health-care
 08 August 2014 
Endoscopy nurse-administered propofol sedation performance
 08 August 2014 
Therapy for biliary tract cancer
 08 August 2014 
Surgeon volume and esophagectomy survival
 07 August 2014 
Global consensus on perianal fistulizing Crohn's disease
 07 August 2014 
Smoking cessation and age of onset of ulcerative colitis
 07 August 2014 
Colonoscopy length and training duration

Blackwell Publishing


GastroHep.com is a Blackwell Publishing registered trademark
© 2014 Wiley-Blackwell and GastroHep.com and contributors
Privacy Statement
Disclaimer
About Us