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Infectious Agents and Cancer

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https://www.readbyqxmd.com/read/29760767/survival-after-cancer-diagnosis-in-a-cohort-of-hiv-positive-individuals-in-latin-america
#1
Valeria I Fink, Cathy A Jenkins, Jessica L Castilho, Anna K Person, Bryan E Shepherd, Beatriz Grinsztejn, Juliana Netto, Brenda Crabtree-Ramirez, Claudia P Cortés, Denis Padgett, Karu Jayathilake, Catherine McGowan, Pedro Cahn
Background: This study aimed to evaluate trends and predictors of survival after cancer diagnosis in persons living with HIV in the Caribbean, Central, and South America network for HIV epidemiology cohort. Methods: Demographic, cancer, and HIV-related data from HIV-positive adults diagnosed with cancer ≤ 1 year before or any time after HIV diagnosis from January 1, 2000-June 30, 2015 were retrospectively collected. Cancer cases were classified as AIDS-defining cancers (ADC) and non-AIDS-defining cancers (NADC)...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29743937/epidemiologic-and-economic-burden-of-hpv-diseases-in-spain-implication-of-additional-5-types-from-the-9-valent-vaccine
#2
Noelia López, Aureli Torné, Agustín Franco, María San-Martin, Elisabet Viayna, Carmen Barrull, Nuria Perulero
Background: A new nonavalent human papillomavirus (HPV) vaccine that includes genotypes 6/11/16/18/31/33/45/52/58 has been recently approved in Spain. A previous study has shown that attributable fraction of HPV related diseases in Spain is consistent with that reported in European and global studies. The aim of the present study was to estimate the annual direct costs associated to the following HPV-related diseases: genital warts, high grade precancerous lesions and cancer of cervix, vulva, vagina, anus and penis and head and neck cancer, caused by genotypes included in the nonavalent (9vHPV) and quadrivalent vaccines (4vHPV), in Spanish men and women...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29643934/extra-telomeric-functions-of-telomerase-in-the-pathogenesis-of-epstein-barr-virus-driven-b-cell-malignancies-and-potential-therapeutic-implications
#3
REVIEW
Silvia Giunco, Maria Raffaella Petrara, Manuela Zangrossi, Andrea Celeghin, Anita De Rossi
The Epstein-Barr virus (EBV) is a ubiquitous human γ-herpesvirus causally linked to a broad spectrum of both lymphoid and epithelial malignancies. In order to maintain its persistence in host cells and promote tumorigenesis, EBV must restrict its lytic cycle, which would ultimately lead to cell death, selectively express latent viral proteins, and establish an unlimited proliferative potential. The latter step depends on the maintenance of telomere length provided by telomerase. The viral oncoprotein LMP-1 activates TERT, the catalytic component of telomerase...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29643933/human-papillomavirus-genome-variants-and-head-and-neck-cancers-a-perspective
#4
REVIEW
Jean-Damien Combes, Silvia Franceschi
Human papillomaviruses (HPV) cause infections that are responsible for diverse clinical manifestations from benign conditions to invasive cancer. As different HPV types are associated with variable pathogenic potential, minor genetic variations within a given high-risk HPV type might also be associated with distinct oncogenic capacities, through variable ability of persistence or risk of progression to precancer/cancer. Most recent HPV variant studies in the cervix using latest sequencing technology confirmed that minor changes in the HPV genome can have a major influence on carcinogenesis and have revealed key data that help better understand the carcinogenicity of HPV at a molecular level...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29632550/role-of-bk-human-polyomavirus-in-cancer
#5
REVIEW
Jorge Levican, Mónica Acevedo, Oscar León, Aldo Gaggero, Francisco Aguayo
Human polyomaviruses (HPyV), which are small DNA viruses classified into the polyomaviridae family, are widely distributed in human populations. Thirteen distinct HPyVs have been described to date. Some of these viruses have been found in human tumors, suggesting an etiological relationship with cancer. In particular, convincing evidence of an oncogenic role has emerged for a specific HPyV, the Merkel cell polyomavirus (MCPyV). This HPyV has been linked to rare skin cancer, Merkel cell carcinoma (MCC). This finding may be just the tip of the iceberg, as HPyV infections are ubiquitous in humans...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29619076/immunogenicity-of-a-fap2-peptide-mimotope-of-fusobacterium-nucleatum-and-its-potential-use-in-the-diagnosis-of-colorectal-cancer
#6
Leonardo A Guevarra, Andrea Claudine F Afable, Patricia Joyce O Belza, Karen Joy S Dy, Scott Justin Q Lee, Teresa T Sy-Ortin, Pia Marie S P Albano
Background: The role of Fusobacterium nucleatum Fap2 protein in the development of colorectal cancer has recently been explained. Fap2, when bound to the human inhibitory receptor, TIGIT, inhibits the cytotoxic activity of natural killer (NK) cells against cancer cells, thus, allowing proliferation of the latter eventually leading to tumor growth. The aim of the study was to identify the immunogenicity of a peptide mimotope of the Fap2 protein and to determine the reactivity of colorectal cancer patients' sera against the mimotope...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29599818/cellular-prognostic-markers-in-hepatitis-related-hepatocellular-carcinoma
#7
REVIEW
A Petrizzo, A Mauriello, M L Tornesello, F M Buonaguro, M Tagliamonte, L Buonaguro
Hepatocellular carcinoma (HCC) is the most common primary liver malignancy and accounts for about 6% of all new cancers diagnosed worldwide. Moreover, it is the third and the fifth leading cause of death from cancer in men and women, respectively. HBV and HCV chronic infection is the main risk factor for HCC. A range of therapies are used in the management of HCC according to the extent and severity of liver disease. In this perspective, evaluation of prognosis represents a crucial step for proper management of HCC patients...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29568324/the-role-of-bacteria-in-cancer-therapy-enemies-in-the-past-but-allies-at-present
#8
REVIEW
Shiyu Song, Miza S Vuai, Mintao Zhong
In recent decades, bacteria's therapeutic role has aroused attention in medicinal and pharmaceutical research. While bacteria are considered among the primary agents for causing cancer, recent research has shown intriguing results suggesting that bacteria can be effective agents for cancer treatment - they are the perfect vessels for targeted cancer therapy. Several bacterial strains/species have been discovered to possess inherent oncolytic potentials to invade and colonize solid tumors in vivo. The therapeutic strategy of using bacteria for treating cancer is considered to be effective; however, the severe side effects encountered during the treatment resulted in the abandonment of the therapy...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29563964/comparative-assessment-of-hpv-alcohol-and-tobacco-etiological-fractions-in-algerian-patients-with-laryngeal-squamous-cell-carcinoma
#9
Nora Kariche, Montserrat Torres Hortal, Samir Benyahia, Laia Alemany, Nabila Moulaï, Omar Clavero, Marleny Muñoz, Wahiba Ouahioune, Djamel Djennaoui, Chafia Touil-Boukoffa, Silvia de Sanjosé, Mehdi Bourouba
Background: Despite the increasing incidence of laryngeal squamous cell carcinoma (LSCC) in Algeria, scarce information is available on the importance of the preventable etiological factors which may drive the disease. Remarkably, a significant number of cases occur in nonsmoker and nondrinker patients; hence, suggesting that alternative risk factors, like Human papillomavirus (HPV), might be etiologically involved. To gain more insight on the risk factors associated with the disease in the country, we evaluated the etiological fraction of HPV in comparison to tobacco and alcohol intake in LSCC patients...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29434654/quasispecies-variant-of-pre-s-s-gene-in-hbv-related-hepatocellular-carcinoma-with-hbs-antigen-positive-and-occult-infection
#10
Yuri Hatazawa, Yoshihiko Yano, Rina Okada, Toshihito Tanahashi, Hiroki Hayashi, Hirotaka Hirano, Akihiro Minami, Yuki Kawano, Motofumi Tanaka, Takumi Fukumoto, Yoshiki Murakami, Masaru Yoshida, Yoshitake Hayashi
Background: Hepatocellular carcinoma (HCC) can develop in patients who are negative for the hepatitis B surface antigen (HBsAg) in serum but positive for hepatitis B virus (HBV) DNA in the liver, referred to as occult HBV infection (OBI). Previous reports showed that HBV variants in OBI-related HCC are different from those in HBsAg-positive HCC. In the present study, HBV quasispecies based on the pre-S/S gene in OBI-related HCC patients were examined by high throughput sequencing and compared with those in HBsAg-positive HCC...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29416557/prevalence-of-human-papillomavirus-infection-among-iranian-women-using-cobas-hpv-dna-testing
#11
Farzane Jamdar, Farah Farzaneh, Fariba Navidpour, Sarang Younesi, Payam Balvayeh, Maryamsadat Hosseini, Robabeh Ghodssi-Ghasemabadi
Background: Persistent infection with High Risk Human Papillomavirus (HR HPV) typesplaysamajor role in the development of cervical cancer. Therefore, the detection of HR HPV types is an essential part of cervical cancer screening. The aim of this study was to estimate the prevalence of HR HPV infection among healthy women undergoing routine cervical cancer screening in Iran. Methods: In this cross-sectional study,the results of HPV DNA typing in 2453 normal Iranian womenwhowere referred for routine cervical cancer screening from September 2015 to March 2017 were analyzed...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29387144/hiv-associated-kaposi-s-sarcoma-in-maputo-mozambique-outcomes-in-a-specialized-treatment-center-2010-2015
#12
Vini Fardhdiani, Lucas Molfino, Ana Gabriela Zamudio, Rolanda Manuel, Gilda Luciano, Iza Ciglenecki, Barbara Rusch, Laurence Toutous Trellu, Matthew E Coldiron
Background: Kaposi's sarcoma (KS) is a common HIV-associated malignancy associated with disability, pain and poor outcomes. The cornerstone of its treatment is antiretroviral therapy, but advanced disease necessitates the addition of chemotherapy. In high-income settings, this often consists of liposomal anthracyclines, but in Mozambique, the first line includes conventional doxorubicin, bleomycin and vincristine, which is poorly-tolerated. Médecins Sans Frontières supports the Ministry of Health (MOH) in a specialized HIV and KS treatment center at the Centro de Referencia de Alto Maé in Maputo...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29375654/human-papillomavirus-genotype-distribution-in-cervical-cancer-biopsies-from-nepalese-women
#13
Sunil Kumar Sah, Joaquin V González, Sadina Shrestha, Anurag Adhikari, Krishna Das Manandhar, Shyam Babu Yadav, David A Stein, Birendra Prasad Gupta, María Alejandra Picconi
Background: Cervical cancer (CC) is the leading cause of morbidity and mortality from cancer in Nepalese women. Nearly all cases of CC are caused by infection with certain genotypes of human papillomavirus (HPV). Data on HPV genotype distribution in Nepalese CC patients is sparse. We aimed to determine the distribution of HPV genotypes in biopsies of CC tissue from Nepalese women. Methods: This study examined 248 archived paraffin-embedded tissue specimens from CC cases from patients of B...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29371880/dissecting-the-mechanisms-and-molecules-underlying-the-potential-carcinogenicity-of-red-and-processed-meat-in-colorectal-cancer-crc-an-overview-on-the-current-state-of-knowledge
#14
REVIEW
Marco Cascella, Sabrina Bimonte, Antonio Barbieri, Vitale Del Vecchio, Domenico Caliendo, Vincenzo Schiavone, Roberta Fusco, Vincenza Granata, Claudio Arra, Arturo Cuomo
Meat is a crucial nutrient for human health since it represents a giant supply of proteins, minerals, and vitamins. On the opposite hand, the intake of red and processed meat is taken into account dangerous due to its potential of carcinogenesis and cancer risk improvement, particularly for colorectal cancer (CRC), although it has been reported that also the contaminations of beef infected by oncogenic bovine viruses could increase colorectal cancer's risk. Regarding the mechanisms underlying the potential carcinogenicity of red and processed meat, different hypotheses have been proposed...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29344081/hpv-infection-and-p16-expression-in-oral-and-oropharyngeal-cancer-in-kazakhstan
#15
Dauren Adilbay, Galim Adilbayev, Gulzhan Kidirbayeva, Viktoria Shipilova, Zhanat Sadyk, Gulsum Koyanbekova, Ekaterina Sokolenko, Jan Klozar
Background: Human papillomavirus (HPV) is an important etiologic factor in different cancers of anogenital region and also in a fraction of head and neck cancers (HNC) particularly oropharyngeal tumors. The HPV16 genotype associated with the majority of HPV-related head and neck carcinomas. Th incidence of oropharyngeal cancer is increasing in many countries, and the rate of HPV positive tumors is about 70% in Europe and North America. Little known about the prevalence of HPV in HNC in Central Asia...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29308085/could-mycobacterium-avium-subspecies-paratuberculosis-cause-crohn-s-disease-ulcerative-colitis%C3%A2-and-colorectal-cancer
#16
Ellen S Pierce
Infectious agents are known causes of human cancers. Schistosoma japonicum and Schistosoma mansoni cause a percentage of colorectal cancers in countries where the respective Schistosoma species are prevalent. Colorectal cancer is a complication of ulcerative colitis and colonic Crohn's disease, the two main forms of idiopathic inflammatory bowel disease (IIBD). Mycobacterium avium subspecies paratuberculosis (MAP), the cause of a chronic intestinal disease in domestic and wild ruminants, is one suspected cause of IIBD...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29299053/association-of-epstein-barr-virus-and-breast-cancer-in-eritrea
#17
Ghimja Fessahaye, Ahmed M Elhassan, Elwaleed M Elamin, Ameera A M Adam, Anghesom Ghebremedhin, Muntaser E Ibrahim
Background: The oncogenic potential of Epstein-Barr virus (EBV) in breast cancer is being increasingly recognized. Despite some controversies regarding such role, new evidence is suggesting a culpability of EBV in breast cancer, particularly in Africa where the virus has been originally associated with causation of several solid and hematological malignancies. One example is a report from Sudan implicating EBV as a prime etiologic agent for an aggressive type of breast cancer, where nearly 100% of tumor tissues were shown to carry viral signatures...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29213299/cervical-cancer-patients-presentation-and-survival-in-the-only-oncology-referral-hospital-ethiopia-a-retrospective-cohort-study
#18
Muluken Gizaw, Adamu Addissie, Sefonias Getachew, Wondimu Ayele, Israel Mitiku, Ulrike Moelle, Tigist Yusuf, Mathias Begoihn, Mathewos Assefa, Ahmedin Jemal, Eva Johanna Kantelhardt
Background: Women infected with Human Immune Deficiency Virus (HIV) are assumed to be at higher risk of developing Cervical Cancer (CC). This is due to a rapid progression of pre-invasive to invasive lesions. However, evidences suggest, due to the availability of antiretroviral therapy (ART) and care services; an improved survival and treatment outcome of CC patients (CCPs) with HIV infection is expected. Objective: The aim of this study is to examine the clinical characteristics and survival of of CCPs registered at the radiotherapy center of Tikur Anbessa Specialized Hospital (TASH), Addis Ababa University, Ethiopia...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29142588/characterization-of-hormonal-receptors-and-human-epidermal-growth-factor-receptor-2-in-tissues-of-women-with-breast-cancer-at-muhimbili-national-hospital-dar-es-salaam-tanzania
#19
Amos Rodger Mwakigonja, Nyanda Elias Lushina, Ally Mwanga
Background: Breast cancer is a leading cause of morbidity and deaths among women worldwide. In Tanzania there is no published data on human epidermal growth receptor-2 (HER2/neu) expression in breast carcinoma. Hormonal receptors and HER2/neu status reportedly influence post-mastectomy adjuvant therapy and predict treatment outcome and prognosis. Here we evaluate hormonal receptors and HER-2 status in biopsies of women with breast cancer at Muhimbili National Hospital (MNH). Methods: A cross-sectional study of female breast post-modified radical mastectomy (MRM)/incisional biopsies confirmed to be carcinoma at the Histopathology Unit (January-December 2013)...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29142587/factors-associated-with-the-high-prevalence-of-oesophageal-cancer-in-western-kenya-a-review
#20
REVIEW
Gabriel Kigen, Naftali Busakhala, Zipporah Kamuren, Hillary Rono, Wilfred Kimalat, Evangeline Njiru
Oesophageal carcinoma (OC) is highly prevalent in Western Kenya especially among the members of the Kalenjin community who reside in the Northern and Southern areas of the Rift Valley. Previous authors have suggested potential association of environmental and genetic risk factors with this high prevalence. The environmental factors that have been suggested include contamination of food by mycotoxins and/or pesticides, consumption of traditional alcohol (locally referred to "Busaa" and "Chan'gaa" ), use of fermented milk ("Mursik") , poor diet, tobacco use and genetic predisposition...
2017: Infectious Agents and Cancer
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