In this study, a localized surface plasmon resonance (LSPR) nanobiosensor was designed to quantify anti-Brucella antibodies in the human sera. Smooth Lipopolysaccharide (LPS) extracted from Brucella melitensis via modified hot phenol water method and fixed on of gold nanoparticles by covalent interactions with functionalized nanoparticles. To obtain best performance probe, ratio LPS nanoparticl...

rhd antigen is the most immunogenic and clinically significant antigen of red blood cells after abo system. it has historically been associated with hemolytic disease of the newborn (hdn) which is now routinely prevented by the administration of polyclonal anti-d immunoglobulin. this management of hdn has proven to be one of the most successful cases of prophylactic treatment based on antibody ...

It was demonstrated previously that the cytolysis of murine viral lymphoma cells by anti-murine sarcoma virus (MSV) syngeneic T-killer lymphocytes was restricted by some products of the H-2 complex. The respective role of the products of different regions of the H-2 complex were studied with six H-2(b) and three H-2(d) lymphomas induced by five different type C viruses. They were tested in a cl...

background: allergens are mostly composed of glycoprotein structures. it is believed that glycan-specific antibodies may lead to false-positive reactions in immunoassays. in this study we investigated the glycosylation state of grape allergens as well as the presence of antibodies to cross-reactive carbohydrate determinants (anti-ccds) in sera from grape-sensitive individuals. methods: grape ex...

OBJECTIVE Anti-Tr is among the better described autoantibodies in paraneoplastic cerebellar degeneration (PCD) combined with Hodgkin lymphoma (HL); however, the Tr antigen remains unidentified. METHODS We used immunoprecipitation of total rat brain extract followed by mass spectrometry to identify the antigen recognized by anti-Tr-positive sera. By Western blotting and cell-based assays, we t...

BACKGROUND Nontyphoidal strains of Salmonella are a leading cause of death among HIV-infected Africans. Antibody-induced complement-mediated killing protects healthy Africans against Salmonella, but increased levels of anti-lipopolysaccharide (LPS) antibodies in some HIV-infected African adults block this killing. The objective was to understand how these high levels of anti-LPS antibodies inte...

Studies were performed to investigate the separation of Lpb (lipoprotein B) species present in plasma of heterozygous swine bearing the Lpb2 and Lpb3 apoB mutant genes. Low density lipoprotein (LDL) fractions from Lpb2/2 and Lpb3/3 homozygotes were coupled to a matrix and used to isolate affinity-purified antibodies anti-Lpb2 and anti-Lpb3 from swine alloimmune sera, one with specificity for th...

BACKGROUND: Antibodies to a cytosolic soluble liver antigen (SLA) are specifically detected in patients with autoimmune hepatitis (AIH). The target of anti-SLA has been identified as a ~50 kDa UGA serine tRNA-associated protein complex (tRNP(Ser)Sec), through the screening of cDNA libraries. A recent report questioned the identity of tRNP(Ser)Sec as the real SLA antigen. The latter study identi...

We examined alternative and classical complement activation induced by whole bacilli of Mycobacterium bovis BCG and Mycobacterium tuberculosis products. After exposure to BCG, there were higher levels of the terminal complement complex in sera from Indian tuberculosis patients than in sera from healthy controls. The addition of BCG with or without EGTA to these sera indicated that approximately...