abstract background: cancers are the second most common cause of non-accidental deaths in iran, after cardiovascular mortality. although most cases of esophageal squamous cell carcinoma (escc) in the usa and western populations have been attributed to high levels of exposure to tobacco and alcohol, but in iranian populations the other risk factors especially infectious agents have been postulat...

Cervical cancer remains a medical and social problem for our country and requires the implementation of effective strategy for its prevention. The etiopathogenesis of precancer lesions and cervical cancer is associated with the human papillomavirus infection. The proof of the biological significance of papillomavirus infection led to the need to identify the role of individual HPV types, and th...

Human papillomavirus (HPV) is a ubiquitous human pathogen that causes cervical and other anogenital cancers as well as genital warts and recurrent respiratory papillomatosis. Human papillomavirus infection is most common among young, sexually active individuals, and it is so prevalent that approximately 75% to 80% of sexually active individuals will become infected in their lifetime. Currently,...

We present a first-order finite difference scheme for approximating solutions of mathematical model cervical cancer induced by the human papillomavirus (HPV), which consists four nonlinear partial differential equations and ordinary equation. The is analyzed used to provide an existence-uniqueness result. Numerical simulations are performed in order demonstrate rate convergence. A sensitivity a...

Objective(s):This study aims to investigate the relationship between human papillomavirus (HPV) and breast cancer using meta- analysis. Materials and Methods: Relevant studies were identified reviewing the national and international databases. We also increased the search sensitivity by investigating the references as well as interview with research centers and experts. Finally, quality assess...

We identified a conditional transcriptional enhancer in the long control region (LCR) of human papillomavirus type 16 (HPV-16). This conditional enhancer requires activation in trans by a product of the viral early-region open reading frames (ORFs). Primer extension analysis of chloramphenicol acetyltransferase RNA isolated from transiently transfected CV-1 cells demonstrated that trans-activat...

While both variants and types of human papillomavirus (HPV) are common, subtypes (2-10% sequence divergence in the L1 gene) have been considered to be rare. We searched GenBank and in-house databases using a 440 nt L1 fragment and identified 7, 30 and 10 subtypes/putative subtypes in the HPV genera Alpha, Beta and Gamma, respectively. The number of types/putative types in each genus was 54, 58 ...

This review examines the general cellular and molecular underpinnings of human papillomavirus (HPV)-related carcinogenesis in the context of head and neck squamous cell carcinoma (HNSCC) and focuses on HPV-positive oropharyngeal squamous cell carcinoma in areas for which specific data is available. It covers the major pathways dysregulated in HPV-positive HNSCC and the genome-wide changes assoc...

Two-thirds of 152 patients treated for high-grade cervical disease, free of persistence/recurrence, and followed-up both with human papillomavirus (HPV) DNA testing and HPV genotyping cleared their high-risk HPV infection within 1year. Viral clearance continued at diminishing rates during the second and the third year, at the end of which it was virtually complete.

The cervical carcinoma-derived cell line MS751 was examined for human papillomavirus (HPV) DNA and RNA. A genomic fragment containing both viral and cellular sequences was cloned. Sequence analysis showed that MS751 cells contain a partially deleted HPV-45 genome integrated at a single chromosomal site. HPV sequences from the E6-E7 region are expressed as poly(A)+ RNA.