Help
Subscribe


All of GastroHep is now free access! - Click here to register 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

 28 November 2014

Advanced search
 28 November 2014 
C. diff and pediatric IBD
 28 November 2014 
Fruit and vegetable consumption and esophageal cancer
 28 November 2014 
IBD and students' adjustment to college
 27 November 2014 
Prediction of functional GI disorders later in life
 27 November 2014 
Differences in the incidence of esophageal adenocarcinoma
 27 November 2014 
End points of outcomes in primary biliary cirrhosis
 26 November 2014 
Detection of gastric precancerous conditions
 26 November 2014 
Vegetables and garlic and colorectal cancer risk
 26 November 2014 
Fertility in women with celiac disease
 25 November 2014 
Esophagogastric junction of children with GERD
 25 November 2014 
Symptom activity index for eosinophilic esophagitis
 25 November 2014 
Placebo response rate in fistulizing Crohn's
 24 November 2014 
Nasoenteric tube feeding in acute pancreatitis
 24 November 2014 
Corticosteroids and infections in elderly-onset IBD
 24 November 2014 
Adhesions in abdominal and pelvic surgery
 21 November 2014 
Hepatic involvement in IgG4-related disease
 21 November 2014 
Mortality of chemoembolization in hepatocellular carcinoma
 21 November 2014 
Skin cancer in ulcerative colitis patients
 20 November 2014 
Global measures in chronic idiopathic constipation
 20 November 2014 
Macrophage activation in alcoholic hepatitis
 20 November 2014 
Covert hepatic encephalopathy and survival
 19 November 2014 
Thiopurine withdrawal in IBD
 19 November 2014 
Esophageal narrowing in esophageal eosinophilia
 19 November 2014 
Second intestinal resection in Crohn's
 18 November 2014 
Colorectal neoplasia and vitamin D
 18 November 2014 
Food-associated changes in the intestinal mucosa in IBS
 18 November 2014 
Alternative medicine use by US adults
 17 November 2014 
Allergy-related diseases and abdominal pain in childhood
 17 November 2014 
Treatment of obesity in primary care settings
 17 November 2014 
Diagnosis of monogenic very early onset IBD
 14 November 2014 
Second intestinal resection in Crohn's
 14 November 2014 
HCC risk in active stage Hep B
 14 November 2014 
Thiopurine and clinical remission in IBD
 13 November 2014 
Antibiotics and risk of new-onset Crohn’s
 13 November 2014 
Chronic Hep C genotype 1 treatment after relapse
 13 November 2014 
Chemoembolization for hepatocellular carcinoma
 12 November 2014 
Risk of hepatocellular carcinoma
 12 November 2014 
Abdominal symptom severity in chronic idiopathic constipation
 12 November 2014 
Screening colonoscopy
 11 November 2014 
Hepatocellular carcinoma in Hep B with nucleotide analogue
 11 November 2014 
Familial colorectal cancer screening
 11 November 2014 
Fecal microbiota transplant for C. diff
 10 November 2014 
STaples IPAA for ulcerative colitis
 10 November 2014 
Blood stream infections in acute liver failure
 10 November 2014 
Ig4-related disease
 07 November 2014 
Host and viral factors in chronic Hep C
 07 November 2014 
Celiac diagnosis without biopsy
 07 November 2014 
Pricing practices of gastroenterologists
 06 November 2014 

Colorectal surgery postdischarge occurrences and readmissions

 06 November 2014 
Thromboprophylaxis in IBD
 06 November 2014 
Steatosis biomarkers in NAFLD
 05 November 2014 
Readmission risk factors for patients with IBD
 05 November 2014 
Hysterectomy and colonoscopy completion
 05 November 2014 
Adalimumab in Crohn's disease
 04 November 2014 
Gut barrier dysfunction and CNS disorders
 04 November 2014 
Hemospray for nonvariceal upper GI bleeding
 04 November 2014 
Sleep duration and ulcerative colitis
 03 November 2014 
Mucosal pathophysiology in HIV and IBD
 03 November 2014 
Managing bleeding gastroduodenal ulcers
 03 November 2014 
Identifying inflammation in ulcerative colitis

Blackwell Publishing


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