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Infectious Agents and Cancer

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https://www.readbyqxmd.com/read/28413436/predominance-and-association-risk-of-blastocystis-hominis-subtype-i-in-colorectal-cancer-a-case-control-study
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
https://www.readbyqxmd.com/read/28127387/clinical-and-prognostic-analysis-of-78-patients-with-human-immuno-deficiency-virus-associated-non-hodgkin-s-lymphoma-in-chinese-population
#15
Yang Shen, Renfang Zhang, Li Liu, Yinzhong Shen, Wei Song, Tangkai Qi, Yang Tang, Zhenyan Wang, Liqian Guan, Hongzhou Lu
BACKGROUND: Human Immuno-deficiency Virus (HIV) associated non-Hodgkin's lymphoma (NHL) was a special group of disease, which manifests distinct clinical features and prognosis as compared with NHLs in patients without HIV. We performed this study to describe the clinical features of the disease and investigated the potential prognostic factors. METHODS: HIV-infected patients who were newly diagnosed with NHL were enrolled in this study. The selection of anti-lymphoma treatment regimen was mainly dependent on the pathological subtypes of NHLs...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28127386/the-surgical-pathology-laboratory-in-mwanza-tanzania-a-survey-on-the-reproducibility-of-diagnoses-after-the-first-years-of-autonomous-activity
#16
R Tumino, P F Rambau, F Callea, L Leoncini, R Monaco, J Kahima, V Stracca Pansa, L Viberti, D Amadori, P Giovenali, K A Mteta
BACKGROUND: In 2000, an Italian non-governmental organisation (NGO) began a 9-year project to establish a surgical pathology laboratory at the Bugando Medical Centre (BMC) in Mwanza, Tanzania, a country with a low Human Development Index (HDI), and as of 2009, the laboratory was operating autonomously. The present survey aims to evaluate the reproducibility of histological and cytological diagnoses assigned in the laboratory's early years of autonomous activity. We selected a random sample of 196 histological and cytological diagnoses issued in 2010-2011 at the BMC surgical pathology laboratory...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28115985/human-papillomavirus-infection-in-anal-intraepithelial-lesions-from-hiv-infected-cuban-men
#17
Celia M Limia, Yudira Soto, Yanara García, Orestes Blanco, Vivian Kourí, María V López, María E Toledo, Lissette Pérez, Yoanna Baños, Yaniris Caturla, Francisco Aguayo
BACKGROUND: An association between HPV infection and progression to anal squamous intraepithelial lesions (ASIL) has been established, specifically in high-risk populations such as HIV-infected men. In this population, anal cancer is one of the most common non-AIDS-defining malignancies. METHODS: A cross-sectional study to detect anal lesions and HPV infection was performed. Anal mucosa samples were collected from 56 HIV-infected men from Cuba. The cytological diagnosis was done according to Bethesda 2001 System...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28101126/characterisation-of-microbial-communities-within-aggressive-prostate-cancer-tissues
#18
Melissa A Yow, Sepehr N Tabrizi, Gianluca Severi, Damien M Bolton, John Pedersen, Graham G Giles, Melissa C Southey
BACKGROUND: An infectious aetiology for prostate cancer has been conjectured for decades but the evidence gained from questionnaire-based and sero-epidemiological studies is weak and inconsistent, and a causal association with any infectious agent is not established. We describe and evaluate the application of new technology to detect bacterial and viral agents in high-grade prostate cancer tissues. The potential of targeted 16S rRNA gene sequencing and total RNA sequencing was evaluated in terms of its utility to characterise microbial communities within high-grade prostate tumours...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28074107/frequency-of-chlamydia-trachomatis-infection-in-cervical-intraepithelial-lesions-and-the-status-of-cytological-p16-ki-67-dual-staining
#19
R Robial, A Longatto-Filho, C M Roteli-Martins, M F Silveira, D Stauffert, G G Ribeiro, I M Linhares, M Tacla, M A Zonta, E C Baracat
BACKGROUND: Chlamydia trachomatis (Ct) is not a disease subject to mandatory reporting in Brazil, and the prevalence rate of this genital infection varies according to the region in which studies are conducted, as well as by the detection technique employed. Ct has been associated with persistence of Human papillomavirus (HPV) infection and the facilitation of cervical carcinoma development. We evaluated the Chlamydia trachomatis infection and its association with cytology, p16/Ki-67 dual-stained cytology and cervical intraepithelial lesions status in a screening cohort in Brazil...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28070215/multiple-hpv-infections-in-female-sex-workers-in-western-kenya-implications-for-prophylactic-vaccines-within-this-sub-population
#20
Sonia Menon, Davy van den Broeck, Rodolfo Rossi, Emilomo Ogbe, Hillary Mabeya
BACKGROUND: Whilst the imputed role of High Risk (HR) HPV infection in the development of cervical lesions and cancer has been established, the high number of HPV genotypes that Female Sex workers (FSW) harbour warrants that the synergistic effects of potential HR (pHR) and HR HPV genotypes be elucidated to assess the potential impact of prophylactic vaccines. This population in Kenya also harbours a number of other vaginal infections and STIs, including bacterial vaginosis (BV), trichomonas vaginalis (TV) and candida spp...
2017: Infectious Agents and Cancer
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