Articles

Colonization of Mycoplasma hominis and Ureaplasma urealyticum in pregnant women and their transmission to offspring

Abstract

Background and Objectives: Mycoplasma hominis and Ureaplasma urealyticum are important opportunistic pathogens that cause urogenital infections and accelerated newborn delivery in pregnant women. Moreover genital mycoplasmas have been implicated in different neonatal diseases such as pneumonia, sepsis and meningitis. This study was conducted to find out the prevalence and transmission rate of these two organisms in pregnant women and their neonates.
Materials and Methods: Nasotracheal and pharyngeal specimens of 165 newborns hospitalized at Neonatal Intensive Care Unit (NICU) of Rasoul Akram Hospital (during 2010 – 2011) were assessed by PCR to detect M. hominis and U. urealyticum. Moreover, PCR of vaginal specimens from their mothers were obtained to determine the prevalence of these organisms in pregnant women and rate of transmission to their newborns. Data were analyzed using SPSS software.
Results: Totally, the results of PCR were positive in 33 newborns (20%). Vaginal colonization among the mothers was found to be 15% (25/165) for U. urealyticum and 15% (25/165) for M. hominis. The transmission rate to their infants was 72% and 60% for U. urealyticum and M. hominis, respectively.
Conclusion: These data indicate that vertical transmission of mycoplasma and ureaplasma are prevalent in newborns. Since these organisms cause serious infections in neonates, it would be better to perform screening tests in pregnant women before the delivery in order to prevent transmission to neonates and consequent infections and morbidities among them.

Larsen B, Monif GR. Understanding the bacterial flora of the female genital tract. Clin Infect Dis 2001; 32:69-77.

Patil M. Assessing tubal damage. J Hum Reprod Sci 2009; 2:2-11.

Cedillo-Ramírez L, Gil C, Zago I, Yáñez A, Giono S.Association of Mycoplasma hominis and Ureaplasma urealyticum with some indicators of nonspecific vaginitis. Rev Latinoam Microbiol 2000; 42:1-6.

Waites KB, Schelonka RL, Xiao L, Grigsby PL, Novy MJ. Congenital and opportunistic infections: Ureaplasma species and Mycoplasma hominis. Semin Fetal Neonatal Med 2009; 14:190-199.

Razin S, Yogev D, Naot Y. Molecular biology and pathogenicity of mycoplasmas. Microbiol Mol Biol Rev 1998; 62:1094-1156.

Taylor-Robinson D, Lamont RF. Mycoplasmas in pregnancy. BJOG 2011; 118:164-174.

Larsen B, Hwang J. Mycoplasma, Ureaplasma, and adverse pregnancy outcomes: a fresh look. Infect Dis Obstet Gynecol 2010; pii: 521921. doi:10.1155/2010/521921. 2010 Jul 12

Cassell GH, Waites KB, Watson HL, Crouse DT, Harasawa R. Ureaplasma urealyticum intrauterine infection: role in prematurity and disease in newborns. Clin Microbiol Rev 1993; 6:69-87.

Waites KB, Katz B, Schelonka RL. Mycoplasmas and Ureaplasmas as Neonatal Pathogens. Clin Microbiol Rev 2005; 18:757-789.

van Kuppeveld FJ, van der Logt JT, Angulo AF, van Zoest MJ, Quint WG, Niesters HG, et al. Genus and species-specific identification of Mycoplasmas by 16S rRNA amplification. Appl Environ Microbiol 1992;52:2606-2615.

Blanchard A, Hentschel J, Duffy L, Baldus K, Cassell GH. Detection of Ureaplasma urealyticum by polymerase chain reaction in the urogenital tract of adults, in amniotic fluid, and in the respiratory tract of newborns. Clin Infect Dis 1993; 17: 48-53.

Jeffery HE, MPH, Lahra MM (2007). The impact of infection during pregnancy on the mother and baby. In: Fetal and Neonatal Pathology Ed, Jean W. Keeling, T. Yee Khong. Springerl Verlag, London , UK, pp. 379-423.

Chua KB, Ngeow YF, Lim CT, Ng KB, Chye JK.Colonization and transmission of Ureaplasma Urealyticum and Mycoplasma hominis from mothers to full and preterm babies by normal vaginal delivery. Med J Malaysia 1999; 54:242-246.

Pandey A, Dhawan B, Gupta V, Chaudhry R, Deorari AK. Clinical significance of airways colonization with Ureaplasma urealyticum in premature (<34 wk) neonates. Indian J Med Res 2007; 125:679-684.

Najar Peerayeh S, Sattari M. Detection of Ureaplasma urealyticum and Mycoplasma hominis in endocervical specimens from infertile women by polymerase chain reaction. Middle East Fertility Society Jjournal 2006;11:104-108.

Da Silva O, Gregson D, Hammerberg O. Role of Ureaplasma urealyticum and Chlamydia trachomatis in development of bronchopulmonary dysplasia in very low birth weight infants. Pediatr Infect Dis J 1997; 16:364-369.

Chua KB, Ngeow YF, Ng KB, Chye JK, Lim CT.Ureaplasma urealyticum and Mycoplasma hominis isolation from cervical secretions of pregnant women and nasopharyngeal secretions of their babies at delivery. Singapore Med J 1998; 39:300-302.

Waites KB, Crouse DT, Cassell GH. Systemic neonatal infection due to Ureaplasma urealyticum. Clin Infect Dis 1993; 17:131-135.

Cassell GH, Davis RO, Waites KB, Brown MB, Marriott PA, Stagno S, Davis JK. Isolation of Mycoplasma hominis and Ureaplasma urealyticum from amniotic fluid at 16-20 weeks of gestation: potential effect on outcome of pregnancy. Sex Transm Dis 1983; 10:294-302.

Cassell GH, Waites KB, Crouse DT, Rudd PT, Canupp KC, Stagno S, Cutter GR. Association of Ureaplasma urealyticum infection of the lower respiratory tract with chronic lung disease and death in very-low-birth- weight infants. Lancet 1988; 2(8605):240-245.

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IssueVol 6 No 4 (2014) QRcode
SectionArticles
Keywords
Mycoplasma hominis Pregnant women Transmission Rate Ureaplasma urealyticum

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How to Cite
1.
Sobouti B, Fallah S, Mobayen M, Noorbakhsh S, Ghavami Y. Colonization of Mycoplasma hominis and Ureaplasma urealyticum in pregnant women and their transmission to offspring. Iran J Microbiol. 1;6(4):219-224.