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Infectious Agents and Cancer

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https://www.readbyqxmd.com/read/28529542/frequency-and-geographic-distribution-of-tert-promoter-mutations-in-primary-hepatocellular-carcinoma
#1
REVIEW
Francesca Pezzuto, Luigi Buonaguro, Franco M Buonaguro, Maria Lina Tornesello
Primary hepatocellular carcinoma (HCC) mainly develops in subjects chronically infected with hepatitis B (HBV) and C (HCV) viruses through a multistep process characterized by the accumulation of genetic alterations in the human genome. Nucleotide changes in coding regions (i.e. TP53, CTNNB1, ARID1A and ARID2) as well as in non-coding regions (i.e. TERT promoter) are considered cancer drivers for HCC development with variable frequencies in different geographic regions depending on the etiology and environmental factors...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28529541/differences-in-age-specific-hpv-prevalence-between-self-collected-and-health-personnel-collected-specimen-in-a-cross-sectional-study-in-ghana
#2
Adolf K Awua, Richard M K Adanu, Edwin K Wiredu, Edwin A Afari, Alberto Severini
BACKGROUND: HPV infections are ubiquitous and particularly common among sexually active young women. However, there are regional and national variations in age-specific HPV prevalence, which have implications for cervical cancer control. Data on age-specific HPV prevalences for Ghana and most sub-Saharan countries are scanty. Therefore, this study primarily sought to determine the age-specific HPV prevalence among women in a Ghanaian community and to determine whether these prevalences determined with health-personnel and self-collected specimens were comparable...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28529540/the-potential-role-of-infectious-agents-and-pelvic-inflammatory-disease-in-ovarian-carcinogenesis
#3
REVIEW
Kasper Ingerslev, Estrid Hogdall, Tine Henrichsen Schnack, Wojciech Skovrider-Ruminski, Claus Hogdall, Jan Blaakaer
BACKGROUND: The etiological cause of ovarian cancer is poorly understood. It has been theorized that bacterial or viral infection as well as pelvic inflammatory disease could play a role in ovarian carcinogenesis. AIM: To review the literature on studies examining the association between ovarian cancer and bacterial or viral infection or pelvic inflammatory disease. METHODS: Database search through MEDLINE, applying the medical subject headings: "Ovarian neoplasms", AND "Chlamydia infections", "Neisseria gonorrhoeae", "Mycoplasma genitalium", "Papillomaviridae", or "pelvic inflammatory disease"...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28523075/mouse-mammary-tumour-virus-mmtv-and-human-breast-cancer-with-neuroendocrine-differentiation
#4
Lawson Js, Ngan Cc, Glenn Wk, Tran Dd
BACKGROUND: Mouse mammary tumour viruses (MMTVs) may have a role in a subset of human breast cancers. MMTV positive human breast cancers have similar histological characteristics to neuroendocrine breast cancers and to MMTV positive mouse mammary tumours. The purpose of this study was to investigate the expression of neuroendocrine biomarkers - synaptophysin and chromogranin, to determine if these histological characteristics and biomarker expression were due to the influences of MMTV...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28465718/major-and-ancillary-magnetic-resonance-features-of-li-rads-to-assess-hcc-an-overview-and-update
#5
REVIEW
Vincenza Granata, Roberta Fusco, Antonio Avallone, Orlando Catalano, Francesco Filice, Maddalena Leongito, Raffaele Palaia, Francesco Izzo, Antonella Petrillo
Liver Imaging Reporting and Data System (LI-RADS) is a system for interpreting and reporting of imaging features on multidetector computed tomography (MDCT) and magnetic resonance (MR) studies in patients at risk for hepatocellular carcinoma (HCC). American College of Radiology (ACR) sustained the spread of LI-RADS to homogenizing the interpreting and reporting data of HCC patients. Diagnosis of HCC is due to the presence of major imaging features. Major features are imaging data used to categorize LI-RADS-3, LI-RADS-4, and LI-RADS-5 and include arterial-phase hyperenhancement, tumor diameter, washout appearance, capsule appearance and threshold growth...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28465717/protein-signature-characterizing-helicobacter-pylori-strains-of-patients-with-autoimmune-atrophic-gastritis-duodenal-ulcer-and-gastric-cancer
#6
Valli De Re, Ombretta Repetto, Stefania Zanussi, Mariateresa Casarotto, Laura Caggiari, Vincenzo Canzonieri, Renato Cannizzaro
BACKGROUND: Helicobacter pylori (H. pylori) represents a key factor in the etiology of autoimmune atrophic gastritis (AAG), duodenal ulcer (DU) and gastric cancer (GC). The aim of this study was to characterize the differential protein expression of H. pylori isolated from gastric biopsies of patients affected by either AAG, DU or GC. METHODS: The H. pylori strains were isolated from endoscopic biopsies from the stomach of patients with gastric disease. Protein profiles of H...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28413436/predominance-and-association-risk-of-blastocystis-hominis-subtype-i-in-colorectal-cancer-a-case-control-study
#7
Amr Mohamed Mohamed, Mona Abdelfattah Ahmed, Sabah Abdelghany Ahmed, Sherif Ahmed Al-Semany, Saad Saed Alghamdi, Dina Abdulla Zaglool
BACKGROUND: Blastocystis, a genetically diverse intestinal parasite with controversial pathogenic potential, has increasingly been incriminated for diarrheal illness in immunocompromised individuals including colorectal cancer (CRC) patients. The aim of the current study was to assess the possible association between Blastocystis infection and CRC condition in Makkah, Saudi Arabia (KSA). METHODS: Stool samples were collected from 80 non-cancer (NC) and 138 cancer subjects including 74 CRC patients and 64 patients with other cancers outside gastrointestinal tract (COGT)...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28413435/low-prevalence-of-human-mammary-tumor-virus-hmtv-in-breast-cancer-patients-from-myanmar
#8
Thar Htet San, Masayoshi Fujisawa, Soichiro Fushimi, Teizo Yoshimura, Toshiaki Ohara, Lamin Soe, Ngu Wah Min, Ohnmar Kyaw, Xu Yang, Akihiro Matsukawa
BACKGROUND: Human mammary tumor virus (HMTV) is 90-95% homologous to mouse mammary tumor virus (MMTV), one of the causal agents of murine mammary tumors. HMTV (MMTV-like) sequences were reported to be present in human breast cancers from several populations with a prevalence range of 0-78%; however, the prevalence of HMTV in breast cancers from Myanmar remains unknown. METHODS: Fifty-eight breast cancer samples from Myanmar women were examined in this study. DNA was isolated from formalin-fixed paraffin-embedded specimens, and HMTV envelope sequences were detected by semi-nested PCR...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28400857/estimation-of-the-overall-burden-of-cancers-precancerous-lesions-and-genital-warts-attributable-to-9-valent-hpv-vaccine-types-in-women-and-men-in-europe
#9
Susanne Hartwig, Jean Lacau St Guily, Géraldine Dominiak-Felden, Laia Alemany, Silvia de Sanjosé
BACKGROUND: In addition to cervical cancer, human papillomavirus (HPV) is responsible for a significant proportion of cancers and precancerous lesions of the vulva, vagina, anus, penis, head and neck, as well as genital warts. We estimated the annual number of new cases of these diseases attributable to 9-valent HPV vaccine types in women and men in Europe. METHODS: The annual number of new cancers of the cervix, vulva, vagina, anus, penis, and selected head and neck sites in the population of the European Medicines Agency territory was estimated based on age-specific incidence rates extracted from Cancer Incidence in 5 Continents, Volume X and Eurostat population data for 2015...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28344640/the-effects-of-antiviral-treatment-on-breast-cancer-cell-line
#10
Madina Shaimerdenova, Orynbassar Karapina, Damel Mektepbayeva, Kenneth Alibek, Dana Akilbekova
BACKGROUND: Recent studies have revealed the positive antiproliferative and cytotoxic effects of antiviral agents in cancer treatment. The real effect of adjuvant antiviral therapy is still controversial due to the lack of studies in biochemical mechanisms. Here, we studied the effect of the antiviral agent acyclovir on morphometric and migratory features of the MCF7 breast cancer cell line. Molecular levels of various proteins have also been examined. METHODS: To evaluate and assess the effect of antiviral treatment on morphometric, migratory and other cellular characteristics of MCF7 breast cancer cells, the following experiments were performed: (i) MTT assay to measure the viability of MCF7 cells; (ii) Colony formation ability by soft agar assay; (iii) Morphometric characterization by immunofluorescent analysis using confocal microscopy; (iv) wound healing and transwell membrane assays to evaluate migration and invasion capacity of the cells; (v) ELISA colorimetric assays to assess expression levels of caspase-3, E-cadherin and enzymatic activity of aldehyde dehydrogenase (ALDH)...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28344639/aflatoxin-b1-inhibits-the-type-1-interferon-response-pathway-via-stat1-suggesting-another-mechanism-of-hepatocellular-carcinoma
#11
Patrick W Narkwa, David J Blackbourn, Mohamed Mutocheluh
BACKGROUND: Aflatoxin B1 (AFB1) contamination of food is very high in most sub-Saharan African countries. AFB1 is known to cause hepatocellular carcinoma (HCC) by inducing mutation in the tumour suppressor gene TP53. The number of new HCC cases is high in West Africa with an accompanying high mortality. The type I interferon (IFN) pathway of the innate immune system limits viral infections and exerts its anti-cancer property by up-regulating tumour suppressor activities and pro-apoptotic pathways...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28316641/erratum-to-mouse-mammary-tumor-like-virus-mmtv-is-present-in-human-breast-tissue-before-development-of-virally-associated-breast-cancer
#12
Teiko Nartey, Chiara M Mazzanti, Stella Melana, Wendy K Glenn, Generoso Bevilacqua, James F Holland, Noel J Whitaker, James S Lawson, Beatriz G T Pogo
[This corrects the article DOI: 10.1186/s13027-016-0113-6.].
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28270859/genetic-variability-in-e6-e7-and-l1-genes-of-human-papillomavirus-62-and-its-prevalence-in-mexico
#13
Cristina Artaza-Irigaray, María Guadalupe Flores-Miramontes, Dominik Olszewski, María Teresa Magaña-Torres, María Guadalupe López-Cardona, Yelda Aurora Leal-Herrera, Patricia Piña-Sánchez, Luis Felipe Jave-Suárez, Adriana Aguilar-Lemarroy
BACKGROUND: Human papillomavirus (HPV) is the main etiological agent of cervical cancer, the third most common cancer among women globally and the second most frequent in Mexico. Persistent infection with high-risk HPV genotypes is associated with premalignant lesions and cervical cancer development. HPVs considered as low risk or not yet classified, are often found in coinfection with different HPV genotypes. Indeed, HPV62 is one of the most prevalent HPV detected in some countries, but there is limited information about its prevalence in other regions and there are no HPV62 variants currently described...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28228842/worldwide-malaria-incidence-and-cancer-mortality-are-inversely-associated
#14
Li Qin, Changzhong Chen, Lili Chen, Ran Xue, Ming Ou-Yang, Chengzhi Zhou, Siting Zhao, Zhengxiang He, Yu Xia, Jianxing He, Pinghua Liu, Nanshan Zhong, Xiaoping Chen
BACKGROUND: Investigations on the effects of malaria infection on cancer mortality are limited except for the incidence of Burkitt's lymphoma (BL) in African children. Our previous murine lung cancer model study demonstrated that malaria infection significantly inhibited tumor growth and prolonged the life span of tumor-bearing mice. This study aims to assess the possible associations between malaria incidence and human cancer mortality. METHODS: We compiled data on worldwide malaria incidence and age-standardized mortality related to 30 types of cancer in 56 countries for the period 1955-2008, and analyzed their longitudinal correlations by a generalized additive mixed model (GAMM), adjusted for a nonlinear year effect and potential confounders such as country's income levels, life expectancies and geographical locations...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28228841/an-update-on-the-management-of-breast-cancer-in-africa
#15
REVIEW
V Vanderpuye, S Grover, N Hammad, PoojaPrabhakar, H Simonds, F Olopade, D C Stefan
BACKGROUND: There is limited information about the challenges of cancer management and attempts at improving outcomes in Africa. Even though South and North Africa are better resourceds to tackle the burden of breast cancer, similar poor prognostic factors are common to all countries. The five-year overall Survival rate for breast cancer patients does not exceed 60% for any low and middle-income country (LMIC) in Africa. In spite of the gains achieved over the past decade, certain characteristics remain the same such as limited availability of breast conservation therapies, inadequate access to drugs, few oncology specialists and adherence to harmful socio-cultural practices...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28191032/safety-of-new-daas-for-chronic-hcv-infection-in-a-real-life-experience-role-of-a-surveillance-network-based-on-clinician-and-hospital-pharmacist
#16
A Nappi, A Perrella, P Bellopede, A Lanza, A Izzi, M Spatarella, C Sbreglia
BACKGROUND: Direct Antiviral Agents (DAAs) for HCV therapy represents a step ahead in the cure of chronic hepatitis C. Notwithstanding the promising results in several clinical trials, few data are available on adverse effects in real life settings. METHODS: We have evaluated 170 patients with persistent infection and on those eligible to treatment we have followed up them through a network managed by clinician and hospital pharmacist. RESULTS: According to our data we have found that 41% (32 out of 78) of enrolled patients experienced adverse reactions, of these 40% were in those under 65 years while 60% was in patients older than 65 years, SVR was achieved in 88% of the patients (including drop-out)...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28184239/randomized-trial-evaluating-self-sampling-for-hpv-dna-based-tests-for-cervical-cancer-screening-in-nigeria
#17
Fatima Modibbo, K C Iregbu, James Okuma, Annemiek Leeman, Annemieke Kasius, Maurits de Koning, Wim Quint, Clement Adebamowo
BACKGROUND: Cervical cancer incidence and mortality rates in Sub-Saharan Africa (SSA) remain high due to several factors including low levels of uptake of cervical cancer screening. Self-collection of cervicovaginal samples for HPV DNA testing may be an effective modality that can increase uptake of cervical cancer screening in SSA and hard to reach populations in developed countries. We investigated whether self-collection of cervicovaginal samples for HPV DNA tests would be associated with increased uptake of screening compared with clinic based collection of samples...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28174598/review-on-the-role-of-the-human-polyomavirus-jc-in-the-development-of-tumors
#18
REVIEW
Serena Delbue, Manola Comar, Pasquale Ferrante
Almost one fifth of human cancers worldwide are associated with infectious agents, either bacteria or viruses, and this makes the possible association between infections and tumors a relevant research issue. We focused our attention on the human Polyomavirus JC (JCPyV), that is a small, naked DNA virus, belonging to the Polyomaviridae family. It is the recognized etiological agent of the Progressive Multifocal Leukoencephalopathy (PML), a fatal demyelinating disease, occurring in immunosuppressed individuals...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28168002/hepatitis-c-virus-seroprevalence-in-the-general-female-population-of-9-countries-in-europe-asia-and-africa
#19
Gary M Clifford, Tim Waterboer, Bolormaa Dondog, You Lin Qiao, Dimitri Kordzaia, Doudja Hammouda, Namory Keita, Nahid Khodakarami, Syed Ahsan Raza, Ang Tshering Sherpa, Witold Zatonski, Michael Pawlita, Martyn Plummer, Silvia Franceschi
BACKGROUND: New oral treatments with very high cure rates have the potential to revolutionize global management of hepatitis C virus (HCV), but population-based data on HCV infection are missing in many low and middle-income countries (LMIC). METHODS: Between 2004 and 2009, dried blood spots were collected from age-stratified female population samples of 9 countries: China, Mongolia, Poland, Guinea, Nepal, Pakistan, Algeria, Georgia and Iran. HCV antibodies were detected by a multiplex serology assay using bead-based technology...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28138337/human-papillomavirus-genotypes-associated-with-cervical-precancerous-lesions-and-cancer-in-the-highest-area-of-cervical-cancer-mortality-longnan-china
#20
Jin Zhao, Zhong Guo, Qiang Wang, Tianbin Si, Shuyan Pei, Chenjing Wang, Hongmei Qu, Jianbin Zhong, Ying Ma, Cong Nie, Dan Zhang
BACKGROUND: The mortality of cervical cancer in Longnan is as high as 39/10 million, ranking first in China. METHODS: Between 2012 to 2016, 329 samples with cervicitis, cervical intraepithelial neoplasia grade 1 to 3 (CINI to III), and invasive squamous cell carcinoma (SCC) were collected. HPV genotypes were examined with a validated kit for 23 different HPV subtypes. RESULTS: Compared to cervicitis, the HPV positivity is significantly higher in CINI, CIN II/III, and SCC (38...
2017: Infectious Agents and Cancer
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