background: pan-igg specific monoclonal antibodies (mabs) are essential tools for assessment of humoral immunity, immune deficiency and gammopathy. in this study, four hybridoma clones producing mabs with different specificities for human igg isotypes were established. methods: splenocytes from balb/c mice immunized with fc fractions of human igg were fused with sp2/0 myeloma cells. hybridoma c...

hepatitis b vaccination is safe and effective, although breakthrough infection occasionally occurs in those who receive the vaccine and hepatitis b immunoglobulin (hbig) prophylaxis. sequence variation in their antigenic regions is one of the most powerful strategies that are used by viruses to escape recognition by b and t cell-mediated immune responses. the aim of this study was to explore th...

introduction and aims: in order to prevent liver cirrhosis and hepatocellular carcinoma in later life, it is essential to prevent hepatitis b virus (hbv) infection in infants. despite the availability of an effective vaccine, hepatitis b still continues to be a significant health problem. the aim of this study is to reveal the efficacy of passive and active immunoprophylaxis for preventing peri...

host genetic factors play a central role in determining the clinical phenotype of human diseases. association between two polymorphic loci in human genome, human leukocyte antigen (hla) and killer cell immunoglobulin-like receptors (kirs), and genetically complex infectious disease, particularly those of viral etiology, have been historically elusive. hence, defining the influence of genetic di...

background: intravenous immunoglobulin (ivig) is an established treatment of immune mediated demyelinating neuropathy including guillain-barré syndrome and chronic inflammatory demyelinating polyneuropathy. recent trials suggest its efficacy in treating relapsing- remitting multiple sclerosis. ivig exerts a number of effects, which may be beneficial in treating multiple sclerosis (ms): reductio...

human parvovirus b19 is a very common viral infection especially in school-aged children. the infection during pregnancy can affect the fetus due to lack of mother's immunity. although, there is still no evidence of fetal teratogenic effects with parvovirus b19, but non-immune fetal hydrops and abortion may be caused by vertical transmission of the virus during pregnancy. this study was aimed t...

the diagnosis of celiac disease (cd) relies on the concordance of pathological, serological, genetic and clinical features. for this reason, the diagnosis of cd is often a challenge. seronegative celiac disease (sncd) is defined by the negativity of anti-tissue transglutaminase antibodies in the presence of a positive histology on duodenal biopsy samples, i. e. inflammatory infiltrate of intra-...

background: the infection in the neonatal period is a significant cause of mortality in the preterm neonates. the transfer of the immunoglobulin from mother to fetus occurs mainly after 32 to 34 weeks of gestation. therefore, preterm neonates are relatively immune compromised. the aim of the study was to evaluate the impact of intravenous immunoglobulin on mortality rates reduction in preterm n...

As IgM and IgA-enriched preparations are needed to complete the immunotherapeutic spectrum, a simple procedure is described for the preparation of IgM and IgA enriched immunoglobulins. Fraction III which was prepared by cold ethanol fractionation was treated by octanoic acid followed by ethanol precipitation and ion-exchange chromatography using Sephadex DEAE A-50 and 0.1 M tris-D.35M NaCI ...

autoimmune pancreatitis is a fibro-inflammatory form of chronic pancreatitis. it is diagnosed by the combination of imaging studies such as a ct scan and pancreatography, laboratory analyses that include igg4 and/or autoantibodies, histopathological evaluations and positive response to corticosteroid therapy. we report the case of a 41-year-old female with a history of jaundice and increasing a...