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High prevalence of adeno-associated virus (AAV) type 2 rep DNA in cervical materials: AAV may be sexually transmitted

L Han1, T H Parmley, S Keith

  • 1Department of Obstetrics and Gynecology, University of Arkansas for Medical Sciences, Little Rock 72205, USA.

Virus Genes
|January 1, 1996
PubMed

Insights

Adeno-associated virus (AAV) DNA was detected in 50% of cervical samples. This suggests AAV is common in the genital tract and may be sexually transmitted, potentially impacting cervical cancer rates.

Area of Science:

  • Virology
  • Oncology
  • Genetics

Background:

  • Adeno-associated virus (AAV), a human parvovirus, exhibits properties that suppress oncogenic phenotypes in laboratory and animal models.
  • The AAV rep gene, specifically the Rep78 protein, is associated with these inhibitory effects.
  • Seroepidemiologic studies suggest a correlation between AAV infection and lower rates of cervical cancer in humans.

Purpose of the Study:

  • To investigate the presence of AAV rep sequences in cervical DNA samples from women.
  • To explore the potential link between AAV carriage in the genital region and its proposed role in cancer suppression.

Main Methods:

  • DNA was extracted from cervical brushings of nondiseased women.
  • Polymerase chain reaction (PCR) was employed to detect specific segments of the human beta-globin gene and the AAV rep gene.
  • Ethidium bromide staining and dot-blot hybridization were used for analyzing PCR products.

Main Results:

  • The human beta-globin gene was detected in cervical samples, confirming sample quality.
  • AAV rep DNA was identified in 50% of the samples that were positive for beta-globin DNA.
  • These findings indicate a significant prevalence of AAV in the genital tract.

Conclusions:

  • The common presence of AAV DNA in cervical samples suggests widespread carriage in the genital region.
  • The results support the hypothesis that AAV may be sexually transmitted.
  • Further research is warranted to understand the implications of AAV genital carriage for cervical cancer prevention.

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