Causes of Piriformis Syndrome. Piriformis syndrome is caused by overuse of the piriformis muscle in the buttocks. Tight adductor muscles on the inside of the thigh exacerbate piriformis muscle inflammation and accompanying bursitis.auses of Piriformis Syndrome. Piriformis syndrome is caused by overuse of the piriformis muscle in the buttocks. Tight adductor muscles on the inside of the thigh exacerbate piriformis muscle inflammation and accompanying bursitis.
Escherichia coli, one of the many species of bacteria present in the human gut. Gut flora (gut microbiota, or gastrointestinal microbiota) is the complex community of microorganisms that live in the digestive tracts of humans and other animals, including insects. The gut metagenome is the aggregate of all the genomes of gut microbiota. The gut is one niche that human microbiota inhabit.
On the other hand, the oral flora are the usual cause of various oral diseases in humans, including abscesses, dental caries, gingivitis, and periodontal disease. If oral bacteria can gain entrance into deeper tissues, they may cause abscesses of alveolar bone, lung, brain, or the extremities.andling and feeding of the infant after birth leads to establishment of a stable normal flora on the skin, oral cavity and intestinal tract in about 48 hours. It has been calculated that a human adult houses about 1012 bacteria on the skin, 1010 in the mouth, and 1014 in the gastrointestinal tract.