Quantitative polymerase chain reaction for detection of human herpesvirus-7 infection in umbilical cord blood donors.
Transpl Infect Dis
; 17(1): 21-4, 2015 Feb.
Article
en En
| MEDLINE
| ID: mdl-25440722
ABSTRACT
OBJECTIVE:
Umbilical cord blood (UCB) has been a reasonable alternative to granulocyte colony-stimulating factor-mobilized peripheral blood or bone marrow, as a source of hematopoietic stem cells with a lower risk of graft-versus-host disease. In immunocompromised hosts after transplantation, the risk of viral infection in adults, especially with beta-herpesviruses such as human herpesvirus-7 (HHV-7), may be increased. This virus in immunocompromised patients can be reactivated from latency and converted to an active phase. Therefore, light-upon-extension real-time polymerase chain reaction (PCR) was developed to assess the prevalence and load of HHV-7 in the plasma and buffy coat of donors.METHODS:
About 825 UCB samples under standard protocol from donors were collected. Then, DNA from plasma and buffy coat was extracted and quantitative real-time PCR was performed with light-upon-extension primers.RESULTS:
Overall, HHV-7 was detected in 3.64% (30/825) of UCB donors. HHV-7 DNA was detected in 26 (3.2%) buffy coat samples (latent infection), and only 4 (0.48%) of them were positive for HHV-7 DNA in plasma samples (active infection); the mean HHV-7 viral load was 1.31 × 10(1) copies/mL in latent infection, and 1.94 × 10(5) copies/mL in active infection.CONCLUSIONS:
We suggest that real-time PCR in plasma and buffy coat could be a useful method to detect active and latent HHV-7 infection in UCB donors and determine its role in subsequent transmission events.Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Herpesvirus Humano 7
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Infecciones por Roseolovirus
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Trasplante de Células Madre de Sangre del Cordón Umbilical
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Sangre Fetal
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Reacción en Cadena en Tiempo Real de la Polimerasa
Tipo de estudio:
Diagnostic_studies
/
Prevalence_studies
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Risk_factors_studies
Límite:
Adolescent
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Adult
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Female
/
Humans
Idioma:
En
Revista:
Transpl Infect Dis
Asunto de la revista:
TRANSPLANTE
Año:
2015
Tipo del documento:
Article
País de afiliación:
Irán