Streptococcus Pyogenes: Necrotising Fasciitis

Streptococcus pyogenes, a microorganism from the bacterial community, is considered to be a unique and extremely complex opportunistic pathogen. This bacteria is particularly unique, as it can cause various diseases from mild to severe consequences. Streptococcus pyogenes refers to Streptococcus, which is used as a staphylococcus pyogenes because it is used to represent cocci, and Streptococcus pyogenes are used to represent pusogenic organisms. "Streptococcus pyogenes are considered to be one of the most common pathogens in humans and can be found in the skin or respiratory tract of 5 to 15% of people without causing disease" (Todar, 2002).

When returning to Sweden, Charpentier kept colonies of S. pyogenes in the biohazard chamber. There are few people who want to approach S. pyogenes. It can cause strep throat sore throat and necrotizing fasciitis - carnivorous disease. But this is a Charpentier collaborative research worm, and in S. pyogenes, she discovered a strange and powerful protein and is now renamed Cas 9. Charpentier wiped her colony, purified its DNA, and FedEx provided samples to Doudna. Charpentier worked with the team of Doudna to discover that Crispr made two short strand RNAs and Cas 9 locked them. The sequence of the RNA strand corresponds to fragments of viral DNA and may be present in these fragments as gene GPS. When the Crispr - Cas 9 complex reaches the destination, Cas 9 works almost like a magic. Change the shape, grab the DNA and cut with an accurate molecular scalpel.

Streptococcus pyogenes are Gram-positive bacteria present in Firmicutes (Figure 38.1). Prior to the development of molecular typing technology, streptococci were divided into four major categories (purulent, grass green, lactic acid and enterococcus) according to their physiological properties. The sepsis division includes species related to human and animal infections, including group A streptococci (GAS). In modern taxonomy, GAS is contained in the genus Streptococcus and is contained in purulent and most species contained in the genus. Lactic acid and Enterococcus species were subsequently reclassified as Lactococcus and Enterococcus. Although there is a historically close relationship between these three genera, the strains of Enterococcus, Streptococcus and Lactococcus are well separated, all of which belong to the Streptococcus family.

Streptococci contain a variety of species, some of which cause disease in humans and animals, others are important for the production of certain fermented products. Streptococcus pyogenes, commonly referred to as group A streptococci, may cause rheumatic fever, im rash, scar red fever, puerperal fever, streptococcal toxic shock syndrome, streptococcal pharyngitis, tonsillitis and other upper respiratory tract infections there is. Necrotic fasciitis is an infection that rapidly spreads the skin caused by S. pyogenes and its underlying tissue and is commonly referred to as "carnivorous disease". Streptococcus agalactiae or group B streptococci may cause infections of the bladder and uterus in pregnant women; in newborns, the bacterial infection is sepsis (blood poisoning), meningitis (membrane inflammation covering the brain and spinal cord) or It leads to pneumonia. Streptococcus mutans, a grass green species, live in the mouth and contribute to caries