Bacteroides: Description, Causes and Risk Factors:Bacteroides organisms have been recognized as important infectious agents in man, although veterinary surgeons have been aware of their pathogenicity for many years.Bacteroides are genus that includes many species of obligate anaerobic, nonsporeforming bacteria containing Gram-negative rods. Both motile and nonmotile species occur; motile cells are peritrichous. Some species ferment carbohydrates and produce combinations of succinic, lactic, acetic, formic, or propionic acids, sometimes with short-chained alcohols; butyric acid is not a major product. Those species which do not ferment carbohydrates produce from peptone either trace to moderate amounts of succinic, formic, acetic, and lactic acids or major amounts of acetic and butyric acids with moderate amounts of alcohols and isovaleric, propionic, and isobutyric acids. They are part of the normal flora of the intestinal tract and to a lesser degree, the respiratory, and urogenital cavities of humans and animals; many species formerly classified as Bacteroides have been reclassified as belonging to the genus Prevotella. Many species can be pathogenic. The type species is Bacteroides fragilis.Bacteroides bacilli are anaerobic, Gram-negative, saprophytes. They are classified in two groups on a morphologic basis, Bacteroides funduliform-is and Bacteroides fragilis. These bacteria are normal residents within the human body, abundant in the mouth, the female genital tract and the intestine. In the intestine, they outnumber the more familiar Escherichia coli. Bacteroides bacilli are difficult to isolate, since they frequently occur with other anaerobic micro-organisms. They are small and grow very slowly. Therefore, they may be overlooked in stained preparations or overgrown by other bacteria on agar plates.Bacteroides account for as much as 30% of all faecal isolates and form an important part of the normal flora of the gut. They are bile resistant and the principle pathogenic species is B. fragilis. Members of the anaerobic genus fusobacterium are also important in both the normal flora and infection. Six species are common inhabitants of the oral cavity, GI tract, and the genital tract.The incubation period is usually two to six days.Symptoms:Signs & SymptomsFever.
High body temperature.
High Sed Rate.
Diagnosis:If the infection is localized without accessiblepus, the diagnosis cannot be made. Bacteroides infectionshould be considered when a septicemiafollows bowel or pelvic operations. Anaerobictechniques must be used for cultures of pus orblood.Several anaerobic culture systems are available. Normal blood agar plates can be used. Species are identified by gram stain, resistance to bile, antimicrobial susceptibility, and a battery of biochemical tests.Treatment:Surgical management includes adequate drainage of walled-off foci, excision of accessible necrotic tissue and possibly ligation of thrombosed veins. Bacteroides may be resistant to streptomycin and as well in varying degree to penicillin. In 14 cases, in vitro studies carried out with Bacteroides, using streptomycin, sulfadiazine, penicillin and tetracycline, showed that tetracycline was the most effective drug. Satisfactory clinical results with tetracycline have been reported. However, sulfathiazole has been used successfully in urinary tract infections. Some strains are sensitive to oxytetracycline. Failures in treatment have been reported although the micro-organisms in such cases were sensitive in vitro to an antibiotic.The clinical experience of several writers suggests that tetracycline may be the most effective antibiotic with which to commence treatment of a Bacteroides infection while awaiting the results of sensitivity tests.Disclaimer:The above information is just informative purpose. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition.DISCLAIMER: This information should not substitute for seeking responsible, professional medical care.
New research, conducted by the scientists from King’s College London, UK, and China Medical University in Taichung, Taiwan, suggests that taking omega-3 supplements may help improve attention in some children with attention deficit hyperactivity disorder (ADHD). The...
A new study from the University at Buffalo, US, finds that insufficient sleep, less than 5 hours per night, can be harmful to bone health of postmenopausal women. For the study, a team of researchers analyzed health data from 11,084 postmenopausal women who...
No Results Found
The page you requested could not be found. Try refining your search, or use the navigation above to locate the post.
When it is so hot outside you still can find hundreds of ways to cool yourself and drinking a mocktail is one of them. Here are few wonderful recipes for you to try. Kiwi Sour 1 oz orange juice 3 slices kiwi 0.75 oz demerara green tea syrup 0.75 oz lime juice 1 oz...
Many people are motivated for active sports in spring. However, before you buy a membership, you should check which exercises are useful to you and which ones should not be done in any way. Unfortunately, nowadays there are practically no people with an absolutely...
In childhood, many of us dreamed of learning to jump high. Now, after years, it became easier - Kangoo Jumps has appeared. This is one of the relatively new, but quickly gaining popularity types of fitness training. There are several advantages of jumpers. ...
Privacy & Cookies Policy
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.