Abstract
Infections by food-borne viruses such as hepatitis A virus (HAV) and norovirus are significant public health concerns worldwide. Since food-borne viruses are rarely confirmed through direct isolation from contaminated samples, highly sensitive molecular techniques remain the methods of choice for the detection of viral genetic material. Our group has previously developed a specific nested real-time PCR (NRT-PCR) assay for HAV detection that improved overall sensitivity. Furthermore in this study, we have developed a single-tube NRT-PCR approach for HAV detection in food samples that reduces the likelihood of cross contamination between tubes during sample manipulation. HAV RNA was isolated from HAV-spiked food samples and HAV-infected cell cultures. All reactions following HAV RNA isolation, including conventional reverse transcriptase PCR, nested-PCR, and RT-PCR were performed in a single tube. Our results demonstrated that all the samples tested positive by RT-PCR and nested-PCR were also positive by a single-tube NRT-PCR. The detection limits observed for HAV-infected cell cultures and HAV-spiked green onions were 0.1 and 1 PFU, respectively. This novel method retained the specificity and robustness of the original NRT-PCR method, while greatly reducing sample manipulation, turnaround time, and the risk of carry-over contamination. Single-tube NRT-PCR thus represents a promising new tool that can potentially facilitate the detection of HAV in foods thereby improving food safety and public health.
Similar content being viewed by others
Abbreviations
- HAV:
-
Hepatitis A virus
- NRT-PCR:
-
Nested real-time PCR
- PFU:
-
Plaque-forming unit
- TCID:
-
Tissue culture infective dose
References
Brooks, H. A., Gersberg, R. M., & Dhar, A. K. (2005). Detection and quantification of hepatitis A virus in seawater via real-time RT-PCR. Journal of Virological Methods, 127, 109–118.
Butot, S., Putallaz, T., & Sanchez, G. (2007). Procedure for rapid concentration and detection of enteric viruses from berries and vegetables. Applied and Environment Microbiology, 73, 186–192.
Calder, L., Simmons, G., Thornley, C., Taylor, P., Pritchard, K., Greening, G., et al. (2003). An outbreak of hepatitis A associated with consumption of raw blueberries. Epidemiology and Infection, 131, 745–751.
CDC (Center for Disease Control and Prevention). (2011). Viral Hepatitis Statistics and Surveillance. Retrieved September 24, 2013 from http://www.cdc.gov/hepatitis/Statistics/index.html.
Costafreda, M. I., Bosch, A., & Pinto, R. M. (2006). Development, evaluation, and standardization of a real-time TaqMan ® reverse transcription-PCR assay for quantification of hepatitis A virus in clinical and shellfish samples. Applied and Environment Microbiology, 72, 3846–3855.
Coudray, C., Merle, G., Martin-Latil, S., Guillier, L., & Perelle, S. (2013). Comparison of two extraction methods for the detection of hepatitis A virus in lettuces using the murine norovirus as a process control. Journal of Virological Methods, 193, 96–102.
Daemer, R. J., Feinstone, S. M., Gust, I. D., & Purcell, R. H. (1981). Propagation of human hepatitis A virus in African green monkey kidney cell culture: Primary isolation and serial passage. Infection and Immunity, 32, 388–393.
Dey, K. K., Lin, H., Borth, W. B., Melzer, M. J., & Hu, J. S. (2012). A highly sensitive single-tube nested PCR assay for the detection of pineapple mealybug wilt associated virus-2 (PMWaV-2). Journal of Virological Methods, 183, 215–218.
Dix, A. B., & Jaykus, L. A. (1998). Virion concentration method for the detection of human enteric viruses in extracts of hard-shelled clams. Journal of Food Protection, 61, 458–465.
D’Souza, D. H., & Jaykus, L. A. (2002). Zirconium hydroxide effectively immobilizes and concentrates human enteric viruses. Letters in Applied Microbiology, 35, 414–418.
Dubois, E., Hennechart, C., Deboosere, N., Merle, G., Legeay, O., Burger, C., et al. (2006). Intra-laboratory validation of a concentration method adapted for the enumeration of infectious F-specific RNA coliphage, enterovirus, and hepatitis A virus from inoculated leaves of salad vegetables. International Journal of Food Microbiology, 108, 164–171.
Fiore, A. E. (2004). Hepatitis A transmitted by food. Clinical Infectious Diseases, 38, 705–715.
Goswami, B. B. (2004). Detection and quantitation of hepatitis A virus in shellfish by the polymerase chain reaction, chap 26 Bacteriological Analytical. Manual, Food and Drug Administration.
Guevremont, E., Brassard, J., Houde, A., Simard, C., & Trottier, Y. L. (2006). Development of an extraction and concentration procedure and comparison of RT-PCR primer systems for the detection of hepatitis A virus and norovirus GII in green onions. Journal of Virological Methods, 134, 130–135.
Hartman, G., Lau, H., & Lin, A. (2005). A Rapid One-Step RT-PCR for the Detection and Screening of Hepatitis A Virus. FDA LIB, 4360, 1–10.
Hewitt, J., & Greening, G. E. (2004). Survival and persistence of norovirus, hepatitis A virus, and feline calicivirus in marinated mussels. Journal of Food Protection, 67, 1743–1750.
Hu, Y., & Arsov, I. (2009). Nested real-time PCR for hepatitis A detection. Letters in Applied Microbiology, 49, 615–619.
Jacobsen, K. H., & Wiersma, S. T. (2010). Hepatitis A virus seroprevalence by age and world region, 1990 and 2005. Vaccine, 28, 6653–6657.
Jothikumar, N., Cromeans, T. L., Sobsey, M. D., & Robertson, B. H. (2005). Development and evaluation of a broadly reactive TaqMan ® assay for rapid detection of hepatitis A virus. Applied and Environment Microbiology, 71, 3359–3363.
Kingsley, D. H., & Richards, G. P. (2001). Rapid and efficient extraction method for reverse transcription-PCR detection of hepatitis A and Norwalk-like viruses in shellfish. Applied and Environment Microbiology, 67, 4152–4157.
Llop, P., Bonaterra, A., Penalver, J., & Lopez, M. M. (2000). Development of a highly sensitive nested-PCR procedure using a single closed tube for detection of Erwinia amylovora in asymptomatic plant material. Applied and Environment Microbiology, 66, 2071–2078.
Love, D. C., Casteel, M. J., Meschke, J. S., & Sobsey, M. D. (2008). Methods for recovery of hepatitis A virus (HAV) and other viruses from processed foods and detection of HAV by nested RT-PCR and TaqMan ® RT-PCR. International Journal of Food Microbiology, 126, 221–226.
Moser, D. A., Neuberger, E. W., & Simon, P. (2012). A quick one-tube nested PCR-protocol for EPO transgene detection. Drug Testing and Analysis, 4, 870–875.
Ott, J. J., Irving, G., & Wiersma, S. T. (2012). Long-term protective effects of hepatitis A vaccines. A systematic review. Vaccine, 31, 3–11.
Rutjes, S. A., Lodder-Verschoor, F., van der Poel, W. H., van Duijnhoven, Y. T., & de Roda-Husman, A. M. (2006). Detection of noroviruses in foods: a study on virus extraction procedures in foods implicated in outbreaks of human gastroenteritis. Journal of Food Protection, 69, 1949–1956.
Sair, A. I., D’Souza, D. H., Moe, C. L., & Jaykus, L. A. (2002). Improved detection of human enteric viruses in foods by RT-PCR. Journal of Virological Methods, 100, 57–69.
Sanchez, G., Bosch, A., & Pinto, R. M. (2007). Hepatitis A virus detection in food: current and future prospects. Letters in Applied Microbiology, 45, 1–5.
Sanchez, G., Pinto, R. M., Vanaclocha, H., & Bosch, A. (2002). Molecular characterization of hepatitis a virus isolates from a transcontinental shellfish-borne outbreak. Journal of Clinical Microbiology, 40, 4148–4155.
Scallan, E., Hoekstra, R. M., Angulo, F. J., Tauxe, R. V., Widdowson, M. A., Roy, S. L., et al. (2011). Foodborne illness acquired in the United States–major pathogens. Emerging Infectious Diseases, 17, 7–15.
Shan, X. C., Wolffs, P., & Griffiths, M. W. (2005). Rapid and quantitative detection of hepatitis A virus from green onion and strawberry rinses by use of real-time reverse transcription-PCR. Applied and Environment Microbiology, 71, 5624–5626.
Shieh, Y. C., Calci, K. R., & Baric, R. S. (1999). A method to detect low levels of enteric viruses in contaminated oysters. Applied and Environment Microbiology, 65, 4709–4714.
Tanzer, L. R., Hu, Y., Cripe, L., & Moore, R. E. (1999). A hot-start reverse transcription-polymerase chain reaction protocol that initiates multiple analyses simultaneously. Analytical Biochemistry, 273, 307–310.
Vega, E., Smith, J., Garland, J., Matos, A., & Pillaii, S. D. (2005). Variability of virus attachment patterns to butterhead lettuce. Journal of Food Protection, 68, 2112–2117.
Villar, L. M., de Paula, V. S., Diniz-Mendes, L., Lampe, E., & Gaspar, A. M. (2006). Evaluation of methods used to concentrate and detect hepatitis A virus in water samples. Journal of Virological Methods, 137, 169–176.
Wheeler, C., Vogt, T. M., Armstrong, G. L., Vaughan, G., Weltman, A., Nainan, O. V., et al. (2005). An outbreak of hepatitis A associated with green onions. New England Journal of Medicine, 353, 890–897.
Acknowledgment
The authors would like to thank Dr. Paul Morin (FDA Northeast Regional Laboratory) for critically reading the manuscript.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Hu, Y., Arsov, I. A Rapid Single-Tube Protocol for HAV Detection by Nested Real-Time PCR. Food Environ Virol 6, 189–195 (2014). https://doi.org/10.1007/s12560-014-9152-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12560-014-9152-6