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https://www.readbyqxmd.com/read/29286606/human-papilloma-virus-genotype-distribution-in-cervical-lesions-in-zanjan-iran
#1
Shahrzad Ahmadi, Hossein Goudarzi, Ahmad Jalilvand, Abdolreza Esmaeilzadeh
Objective: Cervical cancer is one of the most common cancers among women all over the world, and main cause is persistent infection with high risk human papillomavirus (HPV) strains. It has been reported that the distribution and prevalence of HPV types varies by geographical region, so that this is important for prevention by type-specific vaccines. The aim of current study was to determine the genotype distribution of HPV using the INNO-LiPA genotyping assay in Zanjan province, North West Iran. Methods: A total of 112 formalin-fixed paraffin embedded (FFPE) tissue samples from cases of low-grade intraepithelial lesion (LSIL), high-grade intraepithelial lesion (HSIL) and squamous cell carcinoma (SCC) were collected...
December 29, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29274250/an-exosome-based-vaccine-platform-imparts-cytotoxic-t-lymphocyte-immunity-against-viral-antigens
#2
Simona Anticoli, Francesco Manfredi, Chiara Chiozzini, Claudia Arenaccio, Eleonora Olivetta, Flavia Ferrantelli, Antonio Capocefalo, Emiliana Falcone, Anna Ruggieri, Maurizio Federico
Exosomes are 50-150 nm sized nanovesicles released by all eukaryotic cells. We very recently described a method to engineer exosomes in vivo with the E7 protein of Human Papilloma Virus (HPV). This technique consists in the intramuscular injection of a DNA vector expressing HPV-E7 fused at the C-terminus of an exosome-anchoring protein, i.e., Nefmut , we previously characterized for its high levels of incorporation in exosomes. In this configuration, the ∼11 kDa E7 protein elicited a both strong and effective antigen-specific cytotoxic T lymphocyte (CTL) immunity...
December 23, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/29228609/bacteriome-and-mycobiome-associations-in-oral-tongue-cancer
#3
Pranab K Mukherjee, Hannah Wang, Mauricio Retuerto, Huan Zhang, Brian Burkey, Mahmoud A Ghannoum, Charis Eng
Squamous cell carcinoma of the oral (mobile) tongue (OMTC), a non-human papilloma virus-associated oral cancer, is rapidly increasing without clear etiology. Poor oral hygiene has been associated with oral cancers, suggesting that oral bacteriome (bacterial community) and mycobiome (fungal community) could play a role. While the bacteriome is increasingly recognized as an active participant in health, the role of the mycobiome has not been studied in OMTC. Tissue DNA was extracted from 39 paired tumor and adjacent normal tissues from patients with OMTC...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29224043/identification-of-human-papillomavirus-hpv-subtype-in-oral-cancer-patients-through-microarray-technology
#4
Soung Min Kim, Ik Jae Kwon, Hoon Myoung, Jong Ho Lee, Suk Keun Lee
PURPOSE: Human papilloma virus (HPV) is the main source of cervical cancer. Many recent studies have revealed the prevalence and prognosis of HPV associated with oropharyngeal squamous cell carcinoma, but fewer reports have evaluated HPV in oral squamous cell carcinoma (OSCC). The purpose of this study was to determine the prevalence and prognosis of HPV associated with OSCC according to HPV and tumor types. MATERIALS AND METHODS: We used a DNA chip kit (MY-HPV chip kit ®, Mygene Co...
December 9, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29203175/impact-of-hpv-16-18-infection-on-clinical-outcomes-in-locally-advanced-cervical-cancers-treated-with-radical-radio-chemo-therapy-a-prospective-observational-study
#5
Umesh Mahantshetty, Tanuja Teni, Pushpa Naga, Chandni Hotwani, Sumuki Umesh, Sadhana Kannan, Vinod Hande, Sagar Pawar, Reena Engineer, Supriya Chopra, Kedar Deodhar, Amita Maheshwari, Lavanya Gurram, Sudeep Gupta, Shyam Kishore Shrivastava
OBJECTIVE: With an aim to investigate the impact of Human Papilloma Virus (HPV) 16/18 infection on clinical outcomes in locally advanced cervical cancers treated with radical radio (chemo) therapy, we undertook this prospective study. METHODS: Between May 2010 and April 2012, 150 histologically proven cervical cancer patients treated with radio (chemo) therapy were accrued. Cervical biopsies/brushings were collected at pre-treatment, end of treatment and at 3 monthly intervals up to 24months...
December 1, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/29176795/the-full-transcription-map-of-mouse-papillomavirus-type-1-mmupv1-in-mouse-wart-tissues
#6
Xiang-Yang Xue, Vladimir Majerciak, Aayushi Uberoi, Bong-Hyun Kim, Deanna Gotte, Xiongfong Chen, Maggie Cam, Paul F Lambert, Zhi-Ming Zheng
Mouse papillomavirus type 1 (MmuPV1) provides, for the first time, the opportunity to study infection and pathogenesis of papillomaviruses in the context of laboratory mice. In this report, we define the transcriptome of MmuPV1 genome present in papillomas arising in experimentally infected mice using a combination of RNA-seq, PacBio Iso-seq, 5' RACE, 3' RACE, primer-walking RT-PCR, RNase protection, Northern blot and in situ hybridization analyses. We demonstrate that the MmuPV1 genome is transcribed unidirectionally from five major promoters (P) or transcription start sites (TSS) and polyadenylates its transcripts at two major polyadenylation (pA) sites...
November 27, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29174677/in-vivo-electroporation-enhances-vaccine-mediated-therapeutic-control-of-human-papilloma-virus-associated-tumors-by-the-activation-of-multifunctional-and-effector-memory-cd8-t-cells
#7
Natiely S Sales, Jamile R Silva, Luana R M M Aps, Mariângela O Silva, Bruna F M M Porchia, Luís Carlos S Ferreira, Mariana O Diniz
In vivo electroporation (EP) has reignited the clinical interest on DNA vaccines as immunotherapeutic approaches to control different types of cancer. EP has been associated with increased immune response potency, but its capacity in influencing immunomodulation remains unclear. Here we evaluated the impact of in vivo EP on the induction of cellular immune responses and therapeutic effects of a DNA vaccine targeting human papillomavirus-induced tumors. Our results demonstrate that association of EP with the conventional intramuscular administration route promoted a more efficient activation of multifunctional and effector memory CD8+ T cells with enhanced cytotoxic activity...
November 22, 2017: Vaccine
https://www.readbyqxmd.com/read/29153540/prognostic-value-of-pre-treatment-human-papilloma-virus-dna-status-in-cervical-cancer
#8
Gun Oh Chong, Yoon Hee Lee, Hyung Soo Han, Hyun Jung Lee, Ji Young Park, Dae Gy Hong, Yoon Soon Lee, Young Lae Cho
OBJECTIVE: Although the relationship between human papilloma virus (HPV) and cervical cancer is well established, the prognostic value of HPV status has not been determined, largely because previous studies have yielded conflicting results. This study aimed to investigate the prognostic value of pre-treatment HPV DNA for predicting tumor recurrence in cervical cancer. METHODS: The study included 248 eligible patients who provided cervical cell specimens for HPV genotyping before surgery or concurrent chemoradiotherapy (CCRT)...
November 15, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/29143101/candidate-biomarkers-in-the-cervical-vaginal-fluid-for-the-self-diagnosis-of-cervical-precancer
#9
REVIEW
Xaveer Van Ostade, Martin Dom, Wiebren Tjalma, Geert Van Raemdonck
PURPOSE: Despite improvement in vaccines against human papilloma virus (HPV), the causative agent of cervical cancer, screening women for cervical precancer will remain indispensable in the coming 30-40 years. A simple test that could be performed at home or at a doctor's practice and that informs the woman whether she is at risk would significantly help make a broader group of patients who aware that they need medical treatment. Cervical vaginal fluid (CVF) is a body fluid that is very well suited for such a test...
November 15, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29125603/cell-cycle-arrest-through-indirect-transcriptional-repression-by-p53-i-have-a-dream
#10
REVIEW
Kurt Engeland
Activation of the p53 tumor suppressor can lead to cell cycle arrest. The key mechanism of p53-mediated arrest is transcriptional downregulation of many cell cycle genes. In recent years it has become evident that p53-dependent repression is controlled by the p53-p21-DREAM-E2F/CHR pathway (p53-DREAM pathway). DREAM is a transcriptional repressor that binds to E2F or CHR promoter sites. Gene regulation and deregulation by DREAM shares many mechanistic characteristics with the retinoblastoma pRB tumor suppressor that acts through E2F elements...
November 10, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29124395/non-invasive-detection-of-hpv-dna-in-exfoliative-samples-from-ophthalmic-pterygium-a-feasibility-study
#11
Αikaterini K Chalkia, Stavros Derdas, Georgios Bontzos, George Sourvinos, Εfstathios T Detorakis
PURPOSE: The evaluation of a non-invasive detection method for human papilloma virus (HPV) in ophthalmic pterygia. METHODS: Cotton swab samples and corresponding tissue specimens were collected from 21 ophthalmic pterygia of 21 patients. HPV detection and typing were performed by real-time PCR. Discrepancies in HPV detection between swab and tissue samples as well as clinical correlations of findings were examined. RESULTS: HPV DNA was detected in 9 (42...
November 9, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29107932/glycyrrhizin-induces-reactive-oxygen-species-dependent-apoptosis-and-cell-cycle-arrest-at-g0-g1-in-hpv18-human-cervical-cancer-hela-cell-line
#12
Arshi Farooqui, Fahad Khan, Imran Khan, Irfan A Ansari
Cervical cancer is the fourth most common cancer among women worldwide and is a major cause of morbidity and mortality. High-risk Human Papilloma Virus (mostly type 16 & 18) infection is the primary risk factor for the development of cervical carcinoma. The quest for strong, safe and cost effective natural antiproliferative agents that could reduce cervical cancer have been focussed now a day. Recently, glycyrrhizin, a triterpene glycoside (saponin) from licorice (Glycyrrhiza glabra Linn.), has been shown to exhibit potent antiproliferative and anticancer properties in a few preliminary studies...
November 3, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28993274/in-situ-hybridization-detection-methods-for-hpv16-e6-e7-mrna-in-identifying-transcriptionally-active-hpv-infection-of-oropharyngeal-carcinoma-an-updating
#13
Chiara C Volpi, Chiara M Ciniselli, Ambra V Gualeni, Maddalena Plebani, Salvatore Alfieri, Paolo Verderio, Laura Locati, Federica Perrone, Pasquale Quattrone, Antonino Carbone, Silvana Pilotti, Annunziata Gloghini
The aim of this study is comparing two in situ hybridization (ISH) detection methods for human papilloma virus (HPV) 16 E6/E7 mRNA, i.e. the RNAscope® 2.0 High Definition (HD) and the upgraded RNAscope® 2.5 HD version. The RNAscope® 2.5 HD has recently replaced the RNAscope® 2.0 HD detection kit. Therefore, this investigation starts from the need to analytically validate the new mRNA ISH assay and, possibly, to refine the current algorithm for HPV detection in oropharyngeal squamous cell carcinoma (OSCC) with the final goal to apply it to daily laboratory practice...
October 6, 2017: Human Pathology
https://www.readbyqxmd.com/read/28977944/utility-of-gene-methylation-analysis-cytological-examination-and-hpv-16-18-genotyping-in-triage-of-high-risk-human-papilloma-virus-positive-women
#14
Yan Tian, Na-Yi Yuan Wu, Yu-Ligh Liou, Ching-Tung Yeh, Lanqin Cao, Ya-Nan Kang, Huei-Jen Wang, Yichen Li, Tang-Yuan Chu, Wei Li, Xiang Liu, Yi Zhang, Honghao Zhou, Yu Zhang
In 2015, the American Society for Colposcopy and Cervical Pathology and the Society of Gynecologic Oncology issued interim guidance for the use of a human papillomavirus (HPV) test for primary screening, suggesting triage of women positive for high-risk human papillomavirus (hrHPV) by HPV-16/18 genotyping and cytology for women positive for non-16/18 hrHPV. The design of the present study was based on this interim guidance and analysis of the methylation status of specific candidate genes, which has been proposed as a tool to reduce unnecessary referral following primary HPV screening for cervical cancer...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28977491/p53-controls-expression-of-the-dna-deaminase-apobec3b-to-limit-its-potential-mutagenic-activity-in-cancer-cells
#15
Manikandan Periyasamy, Anup K Singh, Carolina Gemma, Christian Kranjec, Raed Farzan, Damien A Leach, Naveenan Navaratnam, Hajnalka L Pálinkás, Beata G Vértessy, Tim R Fenton, John Doorbar, Frances Fuller-Pace, David W Meek, R Charles Coombes, Laki Buluwela, Simak Ali
Cancer genome sequencing has implicated the cytosine deaminase activity of apolipoprotein B mRNA editing enzyme catalytic polypeptide-like (APOBEC) genes as an important source of mutations in diverse cancers, with APOBEC3B (A3B) expression especially correlated with such cancer mutations. To better understand the processes directing A3B over-expression in cancer, and possible therapeutic avenues for targeting A3B, we have investigated the regulation of A3B gene expression. Here, we show that A3B expression is inversely related to p53 status in different cancer types and demonstrate that this is due to a direct and pivotal role for p53 in repressing A3B expression...
August 16, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28975630/herpes-simplex-and-human-papilloma-virus-coinfections-in-oral-mucosa-of-men-a-6-year-follow-up-study
#16
Johanna Mäki, Henrik Paavilainen, Katja Kero, Veijo Hukkanen, Stina Syrjänen
Herpes simplex virus (HSV) establishes latency in neurons and recurrent infections in oral mucosa. This prospective study analyzes HSV prevalence in oral mucosal brush samples from men with known human papillomavirus (HPV) status. We hypothesized that HSV-1-infection could facilitate HPV persistence as a cofactor. This study was a part of the Finnish Family HPV study accomplished at the University of Turku/Turku University Hospital, Finland. A total of 139 men (mean age 28.6 ± 4.9 years) were enrolled at 36+-weeks of their partner's pregnancy and thereafter followed-up for 6 years...
October 3, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28954487/occurrence-of-bk-virus-and-human-papilloma-virus-in-colorectal-cancer
#17
Adrian Jarzyński, Przemysław Zając, Remigiusz Żebrowski, Anastazja Boguszewska, Małgorzata Polz-Dacewicz
INTRODUCTION AND OBJECTIVE: Colorectal cancer is one of the most common cancers worldwide. In Poland, it is the second most common cancer, regardless of gender. The aim of study was to analyze the incidence of HPV and BKV in the tissue of colorectal cancer and to determine the relationship between the presence of these viruses and the development of this cancer. MATERIAL AND METHODS: The experiments were conducted using 50 colorectal cancer tissues collected from histological sections...
September 21, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28952562/human-papillomavirus-investigation-in-head-and-neck-squamous-cell-carcinoma-initial-report-from-the-low-risk-hpv-types-associations
#18
Mohammad Hadi Karbalaie Niya, Fahimeh Safarnezhad Tameshkel, Mahshid Panahi, Farah Bokharaei Salim, Seyed Hamid Reza Monavari, Hossein Keyvani
Background: Head and neck squamous cell carcinomas (HNSCC) are a major health issue in many parts of the world. Recently, attention has focused on the human papilloma virus (HPV) as a potential causative agent for HNSCC. This study aimed to survey HPV occurrence in HNSCCs as part of a comprehensive molecular epidemiology approach. Methods: In this retrospective study, patients were recruited from hospitals affiliated to the Iran University of Medical Sciences, Tehran, Iran. Formalin-fixed paraffin-embedded (FFPE) blocks were subjected to DNA isolation by QIAamp® DNA FFPE Tissue Kit and nested PCR, HPV-16 specific conventional PCR, and extra INNO-LiPA HPV genotyping assays were subsequently performed...
September 27, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28940341/the-case-for-resource-sensitivity-why-it-is-ethical-to-provide-cheaper-less-effective-treatments-in-global-health
#19
Govind C Persad, Ezekiel J Emanuel
When Dr. Hortense screens her patients in Chicago for cervical dysplasia and cancer, she conducts a pelvic exam, takes a sample of cervical cells, and sends them for Pap cytology and human papilloma virus DNA co-testing. But when she conducts cervical cancer screening in Botswana, she employs a much simpler diagnostic strategy. She applies acetic acid to highlight precancerous lesions and visually inspects the cervix-a technique known as the VIA (visual inspection with acetic acid) method. She treats suspicious lesions with cryotherapy...
September 2017: Hastings Center Report
https://www.readbyqxmd.com/read/28926591/no-evidence-for-the-presence-of-epstein-barr-virus-in-squamous-cell-carcinoma-of-the-mobile-tongue
#20
Torben Wilms, Gulfaraz Khan, Philip J Coates, Nicola Sgaramella, Robin Fåhraeus, Asma Hassani, Pretty S Philip, Lena Norberg Spaak, Luigi Califano, Giuseppe Colella, Katarina Olofsson, Christos Loizou, Renato Franco, Karin Nylander
Squamous cell carcinoma of the head and neck (SCCHN) comprises a large group of cancers in the oral cavity and nasopharyngeal area that typically arise in older males in association with alcohol/tobacco usage. Within the oral cavity, the mobile tongue is the most common site for tumour development. The incidence of tongue squamous cell carcinoma (TSCC) is increasing in younger people, which has been suggested to associate with a viral aetiology. Two common human oncogenic viruses, human papilloma virus (HPV) and Epstein-Barr virus (EBV) are known causes of certain types of SCCHN, namely the oropharynx and nasopharynx, respectively...
2017: PloS One
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