Hpv high risk infection
Virusului Papiloma Uman Alte traduceri This concerns in particular seasonal influenza, childhood vaccination and human papilloma virus HPV [financing mechanism: Call for proposals and workshops] Acestea se referă în special la gripa sezonieră, vaccinarea copiilor și virusul papiloma uman HPV [Mecanismul de finanțare: Cerere de propuneri și ateliere] Human Papilloma Virus HPV Warts are growths of skin and mucus membrane caused by the human papilloma virus HPV.
Human papillomavirus infection high risk
Negii sunt excrescenţe ale pielii şi mucoasei cauzate de papilomavirusul uman HPV. Infection by human papilloma virus plays an important role in the development of genetic changes that initiate cancer development.
HPV E6 and E7 oncoproteins are the critical molecules in the process of malignant tumour formation. Interacting with various cellular proteins, E6 and E7 influence fundamental cellular functions like cell cycle regulation, telomere maintenance, susceptibility to apoptosis, intercellular adhesion and regulation of immune responses.
Înțelesul "HPV" în dicționarul Engleză
High-risk E6 and E7 bind to p53 and pRb and inactivate their functions with dysregulation of the cell cycle. Uncontrolled cell proliferation leads to increased risk of genetic instability.
Usually, it takes decades for cancer to develop. This review presents the main mechanisms of HPV genome in the carcinogenesis of the uterine cervix.
Virusul infectează epiteliile bazale, celule de epiteliu scuamos stratificat. Proteinele celulare E6 și E7 influențează fundamental funcțiile celulare, cum ar fi reglarea ciclului celular, întreținerea telomerilor, susceptibilitatea la apoptoză, adeziunea intercelulară și reglarea răspunsurilor imune.
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Proliferarea necontrolată a celulelor conduce la un risc crescut de instabilitate genetică. De obicei, este nevoie de zeci de ani pentru a dezvolta un cancer. Acest review prezintă principalele mecanisme ale genomului HPV în carcinogeneza colului uterin. Lista principalelor căutări efectuate de utilizatori pentru accesarea dicționarului nostru online înEngleză și cele mai întrebuințate expresii cu cuvântul «HPV».
The most important risk factor in the ethiology of cervical cancer is the persistent infection with a high-risk strain of human papillomavirus. Materials and methods This general review was conducted based on the AngloSaxone literature from PubMed and Medline to tratamentul de rutină al paraziților the role of HPV genome in the development of cervical cancer.
Discussions Genital human papillomavirus HPV is the most common sexually transmitted infection.
Although the majority of infections cause no symptoms and are self-limited, persistent hpv high risk infection with high-risk types of HPV is the most important risk factor for cervical cancer precursors and invasive cervical cancer. The presence of HPV in They are also responsible for others genital neoplasias like hpv hpv high risk infection risk for cervical cancer, vulvar, anal, and penian. HPV is a non-enveloped, double-stranded DNA virus from the hpv high risk infection of Papillomaviridae, with an 8 kb circular genome composed of six early ORFs open reading frames with role in viral transcription and replication E1, E2, E4, E5, E6, E7two late ORFs L1,2-capsid proteins and a non-coding long controlled region LCR that contains a variety of cis elements, which regulate viral replication and gene expression.
Human papillomavirus infection high risk. HPV - Definiția și sinonimele HPV în dicționarul Engleză
More than HPV hpv high risk for cervical cancer have been identified, and about 40 hpv high risk infection infect the genital tract. Based on their association with cervical cancer and precursor lesions, HPVs are grouped to high-risk 16, 18, 31, 33, 34, 35, hpv high risk infection, 45, 51, 52, 56, 58, 59, 66, 68, 73, 82 and low-risk HPV types 6, 11, 42, 43, 44, 54, 61, 70, 72, Natural history Most genital HPV infections are benign, subclinical, and self-limited, and a high proportion of infections associated with low-grade cervical dysplasias also regress spontaneously 1.
Traducere "human papilloma virus" în română By contrast, persistent cervical infection infection detected more than once in an interval of 6 months or longer with an oncogenic HPV type, especially HPV 16 and HPV 18, is the most important risk factor for progression to high-grade dysplasia, a precancerous lesion that should be treated to prevent the development of invasive cancer 2. Hpv high risk infection is a necessary but not a sufficient condition for the development of cervical cancer.
Cofactors associated with cervical cancer include: cigarette smoking, increased parity, increased age, other sexually transmitted infections, immune suppression, long-term oral contraceptive use, and other host factors. Figure 1. Schematic representation of the HPV double-stranded circular DNA genome Journal of Virology Nov HPV integration into the host genome and Papillomavirus life cycle To establish infection, the virus must infect basal epithelial cells of stratified squamous epithelium, that are long lived or have stem cell-like properties.
Microtrauma of the suprabasal epidermal cells enables the virus to infect the cell within the basal layer.
Once hpv high risk infection the host cell, HPV DNA replicates as the basal cells differentiate and progress to the surface of the epithelium. The viral genome maintains itself as an episome in basal cells, where the viral genes are poorly expressed. In the differentiated keratinocytes of the suprabasal layers of the epithelium, the virus switches to a rolling-circle mode of DNA replication, amplifies its DNA to high copy number, synthesizes capsid proteins, and causes viral assembly to occur 3.
HPV needs host cell factors to regulate viral transcription and replication.
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Their function is to subvert the cell growth-regulatory pathways by binding and inactivating tumor suppressor proteins, cell cyclins, and cyclin-dependent kinases and modify the cellular environment in order to facilitate viral replication in a cell that is terminally differentiated and has exited the hpv high risk for cervical cancer cycle 4.
Cell growth is regulated by two cellular proteins: the tumor suppressor protein, p53, and the retinoblastoma gene product, pRB. Unlike in many other cancers, the p53 in cervical cancer is usually wild type and is not mutated.
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E6 binds to p53 via a cellular ubiquitin ligase named E6AP, hpv high risk infection that it becomes ubiquitinated, leading to degradation and down-regulation of pathways hpv high risk for cervical cancer in cycle arrest and apoptosis. This degradation has the same effect as an inactivating mutation. It is likely that ubiquitin ligase E6AP is a key player not only in the hpv high risk infection of p53 but also in the activation of telomerase and cell transformation by E6 5.
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The E7 binds to retinoblastoma RBphosphorylating and therefore inactivating papillomavirus et condylome 4.