Perinatal transmission of human papilomavirus DNA.
The purpose was to study the perinatal transmission of human papillomavirus DNA (HPV-DNA) in 63 mother-newborn pairs, besides looking at the epidemiological factors involved in the viral DNA transmission. The following sampling methods were used: (1) in the pregnant woman, when was recruited, in cervix and clinical lesions of the vagina, vulva and perineal region; (2) in the newborn, (a) buccal, axillary and inguinal regions; (b) nasopharyngeal aspirate, and (c) cord blood; (3) in the children, buccal was repeated in the 4th week and 6th and 12th month of life. HPV-DNA was identified using two methodologies: multiplex PCR (PGMY09 and MY11 primers) and nested-PCR (genotypes 6/11, 16, 18, 31, 33, 42, 52 and 58). Perinatal transmission was considered when concordance was found in type-specific HPV between mother/newborn or mother/child. HPV-DNA genital was detected in 49 pregnant women submitted to delivery. Eleven newborns (22.4%, n = 11/49) were HPV-DNA positive. In 8 cases (16.3%, n = 8/49) there was type specific HPV concordance between mother/newborn samples. At the end of the first month of life three children (6.1%, n = 3/49) became HPV-DNA positive, while two remained positive from birth. In 3 cases (100%, n = 3/3) there was type specific HPV concordance between mother/newborn samples. In the 6th month, a child (2%, n = 1/49) had become HPV-DNA positive between the 1st and 6th month of life, and there was type specific HPV concordance of mother/newborn samples. All the HPV-DNA positive children (22.4%, n = 11/49) at birth and at the end first month of life (6.1%, n = 3/49) became HPV-DNA negative at the age of 6 months. The HPV-DNA positive child (2%, n = 1/49) from 1st to the 6th month of life became HPV-DNA negative between the 6th and 12th month of life and one child had anogenital warts. In the twelfth month all (100%, n = 49/49) the children studied were HPV-DNA negative. A positive and significant correlation was observed between perinatal transmission of HPV-DNA and the immunodepression of maternal variables (HIV, p = 0.007). Finally, the study suggests that perinatal transmission of HPV-DNA occurred in 24.5% (n = 12/49) of the cases studied.
Rombaldi
Renato L
RL
Diagnosis - Molecular Laboratory, University of Caxias do Sul, Caxias do Sul, Rio Grande do Sul, Brazil. rl.rombaldi@gmail.com
Serafini
Eduardo P
EP
Mandelli
Jovana
J
Zimmermann
Edineia
E
Losquiavo
Kamille P
KP
D000293:Adolescent; D000328:Adult; D002584:Cervix Uteri / Q000821:virology; D004279:DNA, Viral / Q000235:genetics / Q000302:isolation & purification*; D005260:Female; D005838:Genotype; D006801:Humans; D007231:Infant, Newborn; D018445:Infectious Disease Transmission, Vertical; D017720:Molecular Epidemiology; D009061:Mouth Mucosa / Q000821:virology; D009305:Nasopharynx / Q000821:virology; D027383:Papillomaviridae / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D030361:Papillomavirus Infections / Q000453:epidemiology* / Q000635:transmission*; D010502:Perineum / Q000821:virology; D016133:Polymerase Chain Reaction / Q000379:methods; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000453:epidemiology* / Q000821:virology*; D014621:Vagina / Q000821:virology; D055815:Young Adult
D004279:DNA, Viral