<\/span><\/h2>\nStaphylococcus saprophyticus<\/span><\/i> is a Gram-positive, coagulase-negative coccus <\/span>that is an important part of the group of microorganisms causing urinary tract infections (UTIs), particularly in young sexually active females.<\/span><\/p>\n\n- Like all Staphylococci, <\/span>S. saprophyticus<\/span><\/i> is also clustering Gram-positive cocci, nonmotile, non-spore-forming, and facultatively anaerobic.<\/span><\/li>\n
- S. saprophyticus<\/span><\/i>\u00a0is a part of the normal flora in humans that colonizes the areas like the perineum, rectum, urethra, cervix, and gastrointestinal tract.<\/span><\/li>\n
- This bacterium is also a common gastrointestinal flora in pigs and cows and may be transferred to humans by eating these respective foods.<\/span><\/li>\n
- Besides humans, it can also be isolated from other environmental sources like meat and dairy products.<\/span><\/li>\n
- It is the second most common cause of UTIs in young and middle-aged women, next to <\/span>Escherichia coli<\/span><\/i>. Less commonly, it is also responsible for complications like acute pyelonephritis, urethritis, epididymitis, and prostatitis.<\/span><\/li>\n
- Among staphylococci<\/span>, S. saprophyticus<\/span><\/i> is the only species that is typically uropathogenic which is due to its ability to adhere to uroepithelial cells and persistently grow in the urinary tract.<\/span><\/li>\n
- S. saprophyticus<\/span><\/i> is different from S. aureus in that it is coagulase-negative, meaning it lacks the enzyme coagulase. It can be differentiated from other coagulase-negative staphylococci by its resistance to Novobiocin.<\/span><\/li>\n
- It was first isolated from humans by Shaw in 1951, and Torres Pereira first identified its connection with UTIs in 1962.<\/span><\/li>\n<\/ul>\n
<\/span>Classification of <\/b>Staphylococcus saprophyticus<\/i><\/b><\/span><\/h2>\n\n- Classification of different species of the genus Staphylococci is based on various factors ranging from morphology, chemical properties, amino acid sequences, biochemical characteristics, and nucleotide sequences.<\/span><\/li>\n
- Staphylococcus spp. are primarily classified on the basis of DNA\u2013DNA hybridization where members of the same species demonstrate relative DNA-binding values of generally 70 percent or greater.<\/span><\/li>\n
- Staphylococcal subspecies, in turn, have been identified on the basis of phenotypic characters and DNA relatedness, and ribotyping.<\/span><\/li>\n<\/ul>\n
There are two known subspecies of <\/span>S. saprophyticus<\/span><\/i>; <\/span>S. s. saprophyticus<\/span><\/i> and <\/span>S. s. bovis<\/span><\/i> which are differentiated based on their colony diameter and nitrate reduction activity.<\/span><\/p>\n\n\n\nDomain:<\/strong><\/td>\nBacteria<\/td>\n<\/tr>\n | \nPhylum:<\/strong><\/td>\nFirmicutes<\/td>\n<\/tr>\n | \nClass:<\/strong><\/td>\nBacilli<\/td>\n<\/tr>\n | \nOrder:<\/strong><\/td>\nBacillales<\/td>\n<\/tr>\n | \nFamily:<\/strong><\/td>\nStaphylococcaceae<\/td>\n<\/tr>\n | \nGenus:<\/strong><\/td>\nStaphylococcus<\/em><\/td>\n<\/tr>\n\nSpecies:<\/strong><\/td>\nS. saprophyticus<\/span><\/i><\/td>\n<\/tr>\n\nSubspecies:<\/strong><\/td>\nS. saprophyticus <\/span><\/i>subsp.<\/span> saprophyticus<\/span><\/i><\/td>\n<\/tr>\n\nSubspecies:<\/strong><\/td>\nS. saprophyticus <\/span><\/i>subsp.<\/span> bovis<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/span>Habitat<\/b> of <\/b>Staphylococcus saprophyticus<\/i><\/b><\/span><\/h2>\n\n- S. saprophyticus<\/span><\/i> subsp. saprophyticus is present as the normal flora in most primates and smaller terrestrial animals in the Order Scandentia. Member of Rodentia might act as a temporary host.<\/span><\/li>\n
- S. s. bovis<\/span><\/i>, however, is found as the normal flora in domestic cattle like cows and pigs.<\/span><\/li>\n
- S. s. saprophyticus<\/span><\/i> is also present in humans as the normal flora of the <\/span>perineum, rectum, urethra, cervix, and gastrointestinal tract.<\/span><\/li>\n
- Besides being a part of the human\u00a0<\/span>microbiota<\/span>,<\/span> this species is widely distributed in the environments<\/span> and has been isolated from cheese, meat, and raw milk. Also, reports of<\/span>\u00a0S. saprophyticus<\/span><\/i>\u00a0in the marine environment and food derived from fish have been made.<\/span><\/li>\n
- Furthermore, <\/span>S. saprophyticus<\/span><\/i> has also been isolated from the marine environment, either in polluted or recreational waters.<\/span><\/li>\n
- In humans, <\/span>S. saprophyticus<\/span><\/i> is sometimes found in the inguinal and perineal area that is characterized by high humidity, a rich supply of nutrients, near-body temperature, and a higher pH than is found on the general skin surface, factors that enhance its growth.<\/span><\/li>\n
- The exact physiological role of the bacterium as the normal flora is not yet known; however, it is assumed that it may be involved in the lipid metabolism of the skin and that it may serve as a primary barrier against invading microbial pathogens.<\/span><\/li>\n<\/ul>\n
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