@article {7758, title = {MBL2 polymorphisms in women with atypical squamous cells of undetermined significance.}, journal = {J Med Virol}, volume = {87}, year = {2015}, month = {2015 May}, pages = {851-9}, abstract = {

Infection with high risk Human papillomavirus (HPV) is the main known cause of cervical cancer. HPV induces different grades of lesions: among them, Atypical squamous cells of undetermined significance are abnormal lesions that could evolve in pre-cancer lesions or spontaneously regress. The mannose binding lectin (MBL) is an innate immunity serum protein also found in cervico-vaginal mucosa, whose expression is known to be affected by polymorphisms in exon 1 and promoter of the MBL2 gene. In the present study the possible association between MBL2 functional polymorphisms and susceptibility to develop atypical squamous cells of undetermined significance was investigated in a group of women from North-East of Italy, stratified for HPV infection status. The MBL2 D and O alleles and the deficient producer combined genotypes, responsible for low MBL production, were more represented among atypical squamous cells of undetermined significance positive women than healthy controls and the results were confirmed when only HPV negative samples were considered. These results suggest a possible involvement of MBL2 functional polymorphisms in atypical squamous cells of undetermined significance susceptibility.

}, keywords = {Adolescent, Adult, Atypical Squamous Cells of the Cervix, Female, Gene Frequency, Genetic Predisposition to Disease, Humans, Italy, Mannose-Binding Lectin, Polymorphism, Single Nucleotide, Young Adult}, issn = {1096-9071}, doi = {10.1002/jmv.24080}, author = {Zupin, Luisa and Polesello, Vania and Casalicchio, Giorgia and Freato, Nadia and Maestri, Iva and Comar, Manola and Crovella, Sergio and Segat, Ludovica} } @article {7712, title = {The mediating role of interpersonal conflict at work in the relationship between negative affectivity and biomarkers of stress.}, journal = {J Behav Med}, volume = {38}, year = {2015}, month = {2015 Dec}, pages = {922-31}, abstract = {

This study examined the association between interpersonal conflict at work (ICW) and serum levels of three possible biomarkers of stress, namely the pro-inflammatory cytokines Interleukin 1 beta (IL-1β), Interleukin 12 (IL-12), and Interleukin 17 (IL-17). Additionally, this study investigated the role of negative affectivity (NA) in the relationship between ICW and the pro-inflammatory cytokines. Data from 121 employees in an Italian healthcare organization were analyzed using structural equation modeling. Results showed that ICW was positively associated with IL-1β, IL-12, and IL-17, after controlling for the effect of gender. Moreover, ICW completely mediated the relationship between NA and the pro-inflammatory cytokines IL-1β, IL-12, and IL-17. This mediating effect was significant after controlling for the effect of gender. Overall, this study suggests that work-related stress may be associated with biomarkers of inflammation, and that negative affectivity may influence the stress process affecting the exposure to psychosocial stressors.

}, issn = {1573-3521}, doi = {10.1007/s10865-015-9658-x}, author = {Girardi, Damiano and Falco, Alessandra and De Carlo, Alessandro and Benevene, Paula and Comar, Manola and Tongiorgi, Enrico and Bartolucci, Giovanni Battista} } @article {1975, title = {Merkel-cell polyomavirus (MCPyV) is rarely associated to B-chronic lymphocytic leukemia (1 out of 50) samples and occurs late in the natural history of the disease.}, journal = {J Clin Virol}, volume = {55}, year = {2012}, month = {2012 Dec}, pages = {367-9}, abstract = {

BACKGROUND: Previous studies have reported conflicting results on the frequency and potential pathogenetic role of Merkel-cell polyomavirus (MCPyV) in B-chronic lymphocytic leukemia (B-CLL).

OBJECTIVES: To evaluate the association of MCPyV to B-CLL and to investigate the occurrence of MCPyV infection in relationship to the natural history of B-CLL.

STUDY DESIGN: Samples of primary B-CLL peripheral blood mononuclear cells were obtained from two distinct University Hospitals of Italy from January 2010. For one B-CLL patient, it was possible to retrospectively examine the blood sample at diagnosis of B-CLL (March 2004) and several pathological tissues of cutaneous tumors occurring during the course of the disease.

RESULTS: Only one out of 50 B-CLL blood samples examined was positive for MCPyV DNA. Retrospective analysis revealed that MCPyV DNA was absent in peripheral blood sample at diagnosis, becoming present only in advanced disease stages also in tonsil tissue as well as in a biopsy of differentiated squamous cell carcinoma.

CONCLUSIONS: The association with MCPyV seems to represent a rare and late event during the natural history of B-CLL.

}, keywords = {Aged, Aged, 80 and over, Blood, Female, Humans, Italy, Leukemia, Lymphocytic, Chronic, B-Cell, Male, Merkel cell polyomavirus, Middle Aged, Palatine Tonsil, Polyomavirus Infections, Prevalence, Skin, Tumor Virus Infections}, issn = {1873-5967}, doi = {10.1016/j.jcv.2012.08.011}, author = {Comar, Manola and Cuneo, Antonio and Maestri, Iva and Melloni, Elisabetta and Pozzato, Gabriele and Soffritti, Olga and Secchiero, Paola and Zauli, Giorgio} } @article {1743, title = {Merkel cell polyomavirus DNA sequences in the buffy coats of healthy blood donors.}, journal = {Blood}, volume = {117}, year = {2011}, month = {2011 Jun 30}, pages = {7099-101}, abstract = {

Merkel cell polyomavirus (MCPyV), a DNA tumor virus, has been found to be associated with Merkel cell carcinoma and chronic lymphocytic leukemia. MCPyV sequences have also been detected in various normal tissues in tumor-affected patients. Immunologic studies have detected MCPyV antibodies in as many as 80\% of healthy blood donors. This high seroprevalence suggests that MCPyV infection is widespread in humans. In our study, buffy coats, which were examined for MCPyV DNA Tag sequences, showed a prevalence of 22\%. Viral DNA load was revealed in blood samples from 10 to 100 molecules/100 000 cells. DNA sequencing confirmed that polymerase chain reaction amplicons belong to the MCPyV strain, MKL-1. To interpret the putative role of MCPyV in chronic lymphocytic leukemia, we may infer that, during a long period of viral persistence in blood cells, this DNA tumor virus may generate mutants, which are able to participate as cofactors in the multistep process of cell transformation.

}, keywords = {Adult, Aged, Base Sequence, Blood Buffy Coat, Carcinoma, Merkel Cell, Databases, Nucleic Acid, DNA, Viral, Expressed Sequence Tags, Humans, Italy, Middle Aged, Molecular Sequence Data, Polymerase Chain Reaction, Polyomavirus, Polyomavirus Infections, Prevalence, Reverse Transcriptase Polymerase Chain Reaction, Sequence Alignment, Sequence Analysis, DNA, Tumor Virus Infections, Viral Load, Young Adult}, issn = {1528-0020}, doi = {10.1182/blood-2010-09-310557}, author = {Pancaldi, Cecilia and Corazzari, Valentina and Maniero, Stefania and Mazzoni, Elisa and Comar, Manola and Martini, Fernanda and Tognon, Mauro} } @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 = {

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.

}, 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} }