The Prevalence Study Of Malassezia Species In Neonates

Yeasts of the genus malassezia are components of the microflora of human skin and the nosogenesis of tinea versicolor and malassezia folliculitis and relate to seborrheic dermatitis, intertrigo, atopic dermatitis, psoriasisa, and neonatal pustulosis. There are few reports of The prevalence study of Malassezia species in neonates in the overseas.Objective: To determine the rate of cultivate and which species of Malassezia is the preponderant Malassezia on the skin both mother and neonates, compared the coincidence of the Malassezia species between mother and neonates, ascertain the first time and part of discover Malassezia, and analyzed the relationship between Malassezia species to the mode of parturition(nature or paunch), sex of neonates, the work of mother, the age of mother, the time of gestation, the avoirdupois of neonates, the time in hospital and season.Methods: The skin specimens of neonates were taken by sterile adherence tape from forehead, face, chest, navel around, the upper arm, leg, groin, and back at birth and every day until left hospital; use the same method we took the skin specimens of mother form the breast and hand at the sametime; and so to took the skin specimens of nurses form hand; we took the vagina secretion form the mother who would born neonates form vagina. All of the specimens were cultured respectively on the media containing rapeseed oil. The isolated colonies were identified to species based on physiological and morphological characteristics.Results: 59(56.73%) of 104 neonates whose age are 3 to 8 days and 65(62.50%) of 104 mothers had cultures positive for Malassezia. The mode of parturition(nature or paunch), sex of neonates, the work of mother, the age of mother, the time of gestation, the avoirdupois of neonates, the time in hospital, and season; all these could not effected the rate of cultures positive for Malassezia. Three species were identified out form all specimens, including 41 M.furfur-positive neonates, 11 M.sympodialis--positive neonates, 7 M.obtusa-positive neonates, 49 M/wr/ur-positive mothers, 10 M.sympodialis-positive mothers,6 Mo&toa-positive mothers; M.furfur is the preponderant Malassezia on the skin both mother and neonates. The mode of parturition(nature or paunch), sex of neonates, the work of mother, the age of mother, the time of gestation, the avoirdupois of neonates, the time in hospital and season, all these could not effected Malassezia species on the skin of neonates. 74.19% of Malassezia- positive neonates shared the same yeast species with their mother,80( 76.92%) neonates shared the same yeast species or Malassezia species negative with their mother, all these show that the mother seems to be the first reservoir for the neonates's colonization. Malassezia is not cultured at birth but appear in the first day on the skin of neonates. Malassezia can culture positive form forehead, face, chest, navel around, the upper arm, leg, groin, and back, The proportionment andMalassezia quantity are significant preponderant on the forehead and face.Conclusion: 59(56.73%) of 104 neonates whose age are 3 to 8 days and 65(62.50%) of 104 mothers had cultures positive for Malassezia. Three species were identified out form all specimens, including M.furfur, M.sympodialis ,and M.obtuse, M.furfur is the preponderant Malassezia on the skin both mother and neonates. 74.19% of Malassezia- positive neonates shared the same yeast species with their mother, the mother seems to be the first reservoir for the neonates's colonization. Malassezia is not cultured at birth but appear in the first day on the skin of neonates. The forehead and face are the mostly place of culture positive on the skin of neonates.