@article {1606,
	title = {A molecular case-control study of the Merkel cell polyomavirus in colon cancer.},
	journal = {J Med Virol},
	volume = {83},
	year = {2011},
	month = {2011 Apr},
	pages = {721-4},
	abstract = {<p>To explore the putative role of the Merkel cell polyomavirus in human colon cancer, a prospective molecular case-control study was undertaken in patients and their relatives enrolled during a screening program. Fresh tissue samples from 64 cases of colon cancer (mean age 69.9 {\textpm} 11.0 years; 40 males) and fresh biopsies from 80 relatives (mean age 53.7 {\textpm} 8.6 years; 43 male; 55 son/daughter, 23 brother/sister, 2 parents) were analyzed by PCR and sequencing. Pre-cancerous lesions, namely adenomas and polyps, were detected in 15 (18.8\%) and 9 (11.2\%) of the controls, respectively. In addition, 144 blood samples were examined. Merkel cell polyomavirus DNA was detected in 6.3\% of cases and 8.8\% of controls. This difference was not statistically significant in the logistic regression analysis, after adjustment for age. Whereas blood samples from both cases and controls tested negative, the DNA Merkel cell polyomavirus was identified in 12.5\% of adenoma/polyp tissues. No statistically significant difference was found when prevalence rates of Merkel cell polyomavirus in normal, pre-cancerous and cancer tissues were compared. Sequence analysis of the viral LT3 and VP1 regions showed high homology (>99\%) with those of strains circulating worldwide, especially with genotypes detected in France. The findings of this survey are consistent with the hypothesis that the Merkel cell polyomavirus, in addition to other human polyomaviruses, can be recovered frequently from the gastrointestinal tract, because it is transmitted throughout the fecal-oral route. Moreover, the study does not indicate a role for Merkel cell polyomavirus in the genesis of colon cancer.</p>},
	keywords = {Aged, Aged, 80 and over, Case-Control Studies, Cluster Analysis, Colonic Neoplasms, DNA, Viral, Female, Genotype, Humans, Italy, Male, Merkel Cells, Middle Aged, Molecular Sequence Data, Polymerase Chain Reaction, Polyomavirus, Polyomavirus Infections, Prevalence, Sequence Analysis, DNA, Tumor Virus Infections},
	issn = {1096-9071},
	doi = {10.1002/jmv.22004},
	author = {Campello, Cesare and Comar, Manola and D{\textquoteright}Agaro, Pierlanfranco and Minicozzi, Anna and Rodella, Luca and Poli, Albino}
}
@article {1632,
	title = {Detection of SV40 in colon cancer: a molecular case-control study from northeast Italy.},
	journal = {J Med Virol},
	volume = {82},
	year = {2010},
	month = {2010 Jul},
	pages = {1197-200},
	abstract = {<p>To explore the involvement of the simian polyomavirus SV40 in human colon cancer, a molecular case-control study was undertaken in patients and in their relatives living in an area where the spread of SV40 has already been documented. From 2006 to 2008, 94 colon cancer patients (age: 37-90 years) and 91 subjects (age: 32-70 years) relatives of each index case were enrolled. A blood sample and a specimen of cancer tissue or biopsy were collected, from each patient or control, respectively. Samples were analyzed twice for Polyomavirus (i.e., SV40, JCV, and BKV) by PCR and by quantitative real-time PCR (RT-qPCR) with reproducible results. No BKV/JCV was detected either in normal or pathological tissues. SV40 was not present in control subjects, either normal tissue or in biopsies from adenomas or polyps. All blood samples were negative. Conversely, six adenocarcinoma specimens were positive for SV40 sequences (overall prevalence 6.4\%, P = 0.03 in comparison with controls). Nevertheless, the SV40-associated colon cancer risk proved statistically not significant (OR = 3.91; P = 0.115) when adjusted for age. Quantitation of SV40 DNA performed by RT-qPCR showed a low viral load ranging from 6.2 x 10(1) to 9 x 10(3) copies per reaction. This molecular case-control survey showed, for the first time in fresh samples and by RT-qPCR, that SV40 can be detected in colon cancer tissue. However, the finding was not statistically significant when compared with a well-structured community control group. Thus, the role of SV40 and other polyomavirus in colon cancer genesis deserves further investigation.</p>},
	keywords = {Adenocarcinoma, Adult, Aged, Aged, 80 and over, BK Virus, Case-Control Studies, Colonic Neoplasms, DNA, Viral, Female, Humans, Italy, JC Virus, Male, Middle Aged, Polymerase Chain Reaction, Polyomavirus Infections, Simian virus 40, Tumor Virus Infections},
	issn = {1096-9071},
	doi = {10.1002/jmv.21798},
	author = {Campello, Cesare and Comar, Manola and Zanotta, Nunzia and Minicozzi, Anna and Rodella, Luca and Poli, Albino}
}
