نتایج جستجو برای: transfusion transmitted virus ttv
تعداد نتایج: 476649 فیلتر نتایج به سال:
چکیده در سال 2005 دو ویروس تک رشته ای حلقوی در سرم بیمارانی با سندرم عفونی ویروسی حاد برای اولین بار کشف شدند و با در نظر گرفتن اندازه dna ژنومی که کوچکتر ازtorque teno virus(ttv) و بزرگتر از torque teno mini virus(ttmv) بودند، تحت عنوانsmall anellovirus1(sav1) وsmall anellovirus2(sav2) نامگذاری گردیدند و آن را در جنس طبقه بندی نشده از خانواده آنلوویریده قرار دادند. درسال 2007، ویروسtorque ten...
The residual risk of transfusion transmitted infection (TTI) had been decreased greatly since the donor screening methods, especially the nucleic acid testing (NAT), were introduced. NAT can shorten the period between infection and detection (window period) to several days after infection [1]. However, transfusion safety still faces challenges due to limitations of test sensitivity and more imp...
An infectious etiology has been proposed for many human cancers, but rarely have specific agents been identified. One difficulty has been the need to propagate cancer cells in vitro to produce the infectious agent in detectable quantity. We hypothesized that genome amplification from small numbers of cells could be adapted to circumvent this difficulty. A patient with concomitant chronic lympho...
Dear Editor, The risk of transfusion-transmitted hepatitis C virus (HCV) infection was the greatest in people with haemophilia (PWH) before identification and testing for this virus became available in 1987. After introduction of HCV screening and virucidal measures post 1987, this risk significantly reduced in the developed countries (1.8%). 1 However, in resource poor settings, the risk still...
Using PCR with primers derived from a non-coding region of the human TT virus (TTV) genome, the TTV sequence in serum samples obtained from pigs (Sus domesticus), dogs (Canis familiaris) and cats (Felis catus) was identified and the entire genomic sequence was determined for each representative isolate. Three TTV isolates (Sd-TTV31 from a pig, Cf-TTV10 from a dog and Fc-TTV4 from a cat) compris...
A spectrum of blood-borne infectious agents is transmitted through transfusion of infected blood donated by apparently healthy and asymptomatic blood donors. The diversity of infectious agents includes hepatitis B virus (HBV), hepatitis C virus (HCV), human immunodeficiency viruses (HIV-1/2), human T-cell lymphotropic viruses (HTLV-I/II), Cytomegalovirus (CMV), Parvovirus B19, West Nile Virus (...
BACKGROUND Malaria is the most important transfusion-transmitted infection (TTI) in worldwide after viral hepatitis and human immunodeficiency virus (HIV) infection. The main objective of the present study was to review and evaluate the transmission of malaria via blood transfusion in Iran. METHODS A literature search was done without time limitation in the electronic databases as follows: Pu...
The present study describes the cloning and expression of ORF-2 region of TTV genome and the use of expressed peptide in developing immunoassay for detection of anti-TTV antibodies in serum. Presence of TTV-DNA in serum was detected by PCR amplifying N-22 region of ORF-1 of TTV genome. This was followed by genotyping of TTV by RFLP using N-22 amplicon. Using genotype-1 positive serum as the sou...
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