Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

IBS study shows that targeted antibiotics lead to long-lasting improvement in symptoms

10.11.2005


Findings support theory that ibs is caused by bacterial overgrowth in the gut



Researchers at Cedars-Sinai Medical Center have found that a nonabsorbable antibiotic – one that stays in the gut – may be an effective long-term treatment for irritable bowel syndrome (IBS), a disease affecting more than an estimated 20 percent of Americans. The findings, which showed that participants benefited from the antibiotic use even after the course of treatment ended, support previously published research identifying small intestine bacterial overgrowth (SIBO) as a possible cause of the disease. The research was presented at the recent American College of Gastroenterology’s annual meeting in Honolulu, HI.

"This study is important as it is the first to show that the use of targeted antibiotics results in a more significant and long-lasting improvement in IBS symptoms," said Mark Pimentel, M.D., first author on the study and director of the GI Motility Program at Cedars-Sinai. "These results clearly show that antibiotics offer a new treatment approach – and a new hope – for people with IBS."


The randomized, double blind study involved 87 patients. Those on the rifaximin experienced a 37 percent overall improvement of their IBS symptoms as compared to 23 percent on the placebo. Among study subjects whose primary symptom was diarrhea, those on the antibiotic showed more than twice the improvement of those on the placebo (49 percent vs. 23 percent). Patients received the drug (or placebo) for 10 days and were then followed for a total of 10 weeks. Participants kept a stool diary, took a questionnaire and were given methane breath tests. The positive effects of the drug were shown to continue throughout most of the 10-week study, not just during the actual antibiotic course.

Because the cause of IBS has been elusive, treatments for the disease have historically focused on reducing its symptoms – diarrhea and constipation – by giving medications that either slow or speed up the digestive process. In 2000, Pimentel linked bloating, the most common symptom of IBS, to bacterial fermentation, showing that small intestine bacteria overgrowth (SIBO) may be the causative factor in IBS (The American Journal of Gastroenterology, Dec. 2000).

To show evidence of small intestine bacterial overgrowth, participants in both studies were given a lactulose breath test, which monitors the level of hydrogen and methane (the gases emitted by fermented bacteria) on the breath. In the first study, an abnormal breath methane profile was shown to be 100 percent predictive of constipation-predominant IBS. In the current study, the correlation between the amount of methane and the amount of constipation was confirmed, another key finding.

"We were pleased – but not surprised – with the results of this study," said Pimentel. "The next step is to start larger, multi-centered studies to confirm the positive results of this study, which suggest that people can benefit from targeted antibiotic treatment for their IBS."

Irritable Bowel Syndrome is an intestinal disorder that causes abdominal pain or discomfort, cramping or bloating and diarrhea and constipation. It is a long-term condition that usually begins in adolescence or in early adult life. Episodes may be mild or severe and may be exacerbated by stress. It is one of the top ten most frequently diagnosed conditions among U.S. physicians and affects women more often than men.

Simi Singer | EurekAlert!
Further information:
http://www.cedars-sinai.edu

More articles from Studies and Analyses:

nachricht The personality factor: How to foster the sharing of research data
06.09.2017 | ZBW – Leibniz-Informationszentrum Wirtschaft

nachricht Europe’s Demographic Future. Where the Regions Are Heading after a Decade of Crises
10.08.2017 | Berlin-Institut für Bevölkerung und Entwicklung

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: The fastest light-driven current source

Controlling electronic current is essential to modern electronics, as data and signals are transferred by streams of electrons which are controlled at high speed. Demands on transmission speeds are also increasing as technology develops. Scientists from the Chair of Laser Physics and the Chair of Applied Physics at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) have succeeded in switching on a current with a desired direction in graphene using a single laser pulse within a femtosecond ¬¬ – a femtosecond corresponds to the millionth part of a billionth of a second. This is more than a thousand times faster compared to the most efficient transistors today.

Graphene is up to the job

Im Focus: LaserTAB: More efficient and precise contacts thanks to human-robot collaboration

At the productronica trade fair in Munich this November, the Fraunhofer Institute for Laser Technology ILT will be presenting Laser-Based Tape-Automated Bonding, LaserTAB for short. The experts from Aachen will be demonstrating how new battery cells and power electronics can be micro-welded more efficiently and precisely than ever before thanks to new optics and robot support.

Fraunhofer ILT from Aachen relies on a clever combination of robotics and a laser scanner with new optics as well as process monitoring, which it has developed...

Im Focus: The pyrenoid is a carbon-fixing liquid droplet

Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.

A warming planet

Im Focus: Highly precise wiring in the Cerebral Cortex

Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.

The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...

Im Focus: Tiny lasers from a gallery of whispers

New technique promises tunable laser devices

Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

“Lasers in Composites Symposium” in Aachen – from Science to Application

19.09.2017 | Event News

I-ESA 2018 – Call for Papers

12.09.2017 | Event News

EMBO at Basel Life, a new conference on current and emerging life science research

06.09.2017 | Event News

 
Latest News

Nerves control the body’s bacterial community

26.09.2017 | Life Sciences

Four elements make 2-D optical platform

26.09.2017 | Physics and Astronomy

Goodbye, login. Hello, heart scan

26.09.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>