Background: Mycobacterium tuberculosis is a major cause of mortality and morbidity worldwide. Infection with this bacterium is known to induce the development of autoantibodies of which a few are also known to be diagnostic markers for some other diseases. Antineutrophil Cytoplasmic Antibodies (ANCA's) are among those autoantibodies used in clinical setting for diagnosing systemic vasculitic sy...

background: infections attributed to helicobacter pylori ( h. pylori ) involve almost half of the world's population. one of the effects is auto-antibody induction and cross-reaction with numerous proteins in the body. as a result of its widespread prevalence and importance, this study evaluates the associations between h. pylori and thyroid auto-antibodies. materials and methods: this study en...

background and aims: toxoplasmosis is a parasitic disease which may cause some laboratory symptoms in infected individuals. one of the main ways of transmition this organism is placenta to fetus pathway. if this transmission occurs in the 3th month of pregnancy, the abortion, central nerve system and ocular disorder will happen. because of this issue, the precise technique for detection of toxo...

background: the clinical significance of antiphospholipid antibodies in patients with chronic hepatitis c virus (hcv) and some other viral infections is controversial. objective: to study the prevalence of anticardiolipin antibody (acla) and antibeta2glycoproteini antibody (antibeta2gpi antibody) in hcv and hepatitis b virus (hbv) infected patients and its association with liver clinical parame...

The venom of South African scorpion Parabuthus transvaalicus contains a novel group of peptide toxins. These peptides resemble the long chain neurotoxins (LCN) of 60-70 residues with four disulfide bridges; however they are 58 residues long and have only three disulfide bridges constituting a new family of peptide toxins. Here we report the isolation and characterization of three new members of...

background worldwide, the incidence of inflammatory bowel disease (ibd) is increasing. this study aims to evaluate the diagnostic value of two serological markers, atypical perinuclear anti-neutrophil cytoplasmic antibodies (atypical-p-anca) and anti-saccharomyces cerevisiae antibodies (asca), with the intent to determinetheir relationship to ulcerative colitis (uc) and crohn's disease (cd), in...

Background: Human CD34 is a transmembrane glycoprotein which is expressed in human hematopoietic stem cells (HSCs) and the small- vessel endothelial cells of a variety of tissues. CD34 plays a critical role as a marker for diagnosis and classification of leukemia. Anti CD34 antibodies are used for isolation and purification of HSCs from bone marrow, peripheral blood and cord blood. Objective: ...

Background: Decay of vaccine–induced antibody titres without boosting of the wild measles virus has been well documented. Revaccination against measles has reduced the prevalence of the disease worldwide. Revaccination may cause IgE induced anaphylaxis. Objective: To study measles IgG antibody in revaccinated populations and its relation to IgE induced hypersensitivity. Methods: Blood samples w...

Background: Inhibitory antibody to exogenous Factor VIII (FVIII) is a major complication of hemophilia treatment. This study was conducted to determine the prevalence of inhibitor antibody directed against FVIII.Methods: From May 2010 to May 2011, 52 patients with severe hemophilia A admitted in Amirkola Children’s Hospital were evaluated. Those who had abnormal mixing study, antibody against F...

objective: seeking for fertility after previous vasectomy is increasing. vasectomy may break the blood testis barrier and in this way the level of antisperm antibody increases. it is suggested that increase in antisperm antibody decreases spontaneous pregnancy even after successful vasovasostomy. in this study we evaluated antisperm antibody formation 3 months after vasectomy. method: this stud...