TY - CHAP M1 - Book, Section TI - Chapter 292. Ureaplasma Urealyticum Infections A1 - Randis, Tara M. A1 - Ratner, Adam J. A2 - Rudolph, Colin D. A2 - Rudolph, Abraham M. A2 - Lister, George E. A2 - First, Lewis R. A2 - Gershon, Anne A. PY - 2011 T2 - Rudolph's Pediatrics, 22e AB - Shepard first described Ureaplasma urealyticum in 1954 after recovery of these organisms from male patients with nongonococcal urethritis.1 Initially referred to as T-strain (“tiny strain”) mycoplasma, these pleomorphic organisms measure less than 500 nm in diameter, lack a cell wall, and are classified as members of the family Mycoplasmatacea.2Ureaplasma differ from other Mycoplasmatacea in that they produce urease and therefore are capable of generating adenosine triphosphate from hydrolysis of urea. This activity serves as the primary energy source for Ureaplasma. Ureaplasma urealyticum has historically been subtyped into 14 serovars. However, recent molecular characterization of these serovars has resulted in a reclassification of U urealyticum into 2 distinct species: U parvum (serovars 1, 3, 6, and 14) and U urealyticum (serovars 2, 4, 5, and 7–13).3 SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/10/07 UR - accesspediatrics.mhmedical.com/content.aspx?aid=7028520 ER -