Intestinal Flora

(redirected from Gut flora)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Gut flora: intestinal flora

Intestinal Flora


microorganisms inhabiting the intestine of healthy animals and man, generally without harm to the host.

The presence of microbes in the intestine is a symbiotic relationship that developed during the course of evolution. Microbes start to colonize the intestine within hours of the birth of the host, entering primarily with the food. The intestinal flora changes until the host reaches adulthood, when the flora becomes more or less stable. This normal intestinal flora consists of two groups of microorganisms: (1) commensal forms and saprophytes and (2) potentially pathogenic forms.

There are comparatively few microbes in the upper section of the small intestine, since most are destroyed in the stomach by the hydrochloric acid in the gastric juice. Aerobic streptococci (enterococci), lactobacilli, and yeasts are dominant in this section. In the lower sections of the intestine there are more gram-negative bacteria (primarily of Bacillus coli ) and spore-forming bacilli. A gram of feces contains 3–5 X 1011 microbes. There are about 1015 microorganisms in the total intestinal content. Disruption of the species composition and microbe ratios of the intestinal flora by, for example, antibiotics is called dysbacteriosis (dysbiosis). The progress of the digestive processes and the formation of a number of enzymes (for example, cellulase, which decomposes cellulose) and other physiologically active substances not synthesized by the host (certain amino acids, nucleo-tides, and vitamins) depend on the composition and condition of the intestinal flora.


References in periodicals archive ?
21] Researches on the effects and risks presented by sucralose on humans after long-term consumption are still insufficient, especially on the gut flora.
Evasio Pasini, of the Medical Center of Lumezzane, Brescia, Italy, was to measure the presence of pathogenic (disease-causing) gut flora and intestinal permeability (sometimes called "leaky gut") and their association with disease severity, venous blood congestion, and inflammation in patients with CHF.
Good gut flora is an important part of a healthy digestive ecosystem, but one must feed the good gut microbes with prebiotics such as PreticX in order to receive the maximum health benefit," Dr.
Saldman how washing your hands helps your mood; why hitting snooze on your alarm makes you tired; how pistachios are more effective than Viagra; simple acupressure tricks to relieve cramps, congestion, and other acute conditions; how dark chocolate helps you lose weight; which sleep position increases your risk of cancer; the role of gut flora and probiotics in alleviating asthma; how kissing boosts the immune system and helps wounds heal faster; the importance of replacing your pillow regularly; and so much, more .
Here's how to translate gut flora research into practice.
Gut flora and gastric pH play a role in maintaining the integrity of the gastrointestinal (GI) tract.
The composition of gut flora fluctuates in accordance with the food we eat.
One of the best ways to protect your gut when you travel is to take care of your gut flora (good bacteria) by taking probiotics before and during the trip.
This book is an important resource for fisheries, fish veterinary scientists, aquaculture nutritionists, students and researchers wishing to gain a fundamental understanding of the gut flora of farmed fish and crustaceans.