Hepatitis A virus-specific BSC-1 cells were used for the detection of serum immunoglobulins to hepatitis A virus by indirect immunofluorescence. Of 150 serum samples tested, specific immunoglobulin M was detected only in patients with serologically confirmed acute hepatitis A, while specific immunoglobulin G was detected in patients with acute or past clinical hepatitis A as well as many patien...

The present investigation examined the specificity of the salivary immune response of axenic and conventional mice to topically administered Salmonella typhi, S. gallinarum, and S. typhimurium. Specific antibacterial antibodies were determined by passive hemagglutination and bacterial agglutination. Reciprocal antibody titers up to 320 were detected in saliva from mice immunized and assayed wit...

BackgroundModerate exercise results in a significant increase serum and salivary immunoglobulins. Maternal physical activity might therefore be an additional factor influencing antibody levels human milk. This study aims to determine the influence of on SARS-CoV-2-specific Immunoglobulin A (IgA) milk G (IgG) serum.MethodsIn this prospective cross-sectional cohort study, all lactating women Neth...

Antibodies are serum immunoglobulins with binding specificity for particular antigens. Although antibodies can be identified in the serum of individuals or patients that have been exposed to particular pathogens, the usual methods for eliciting antibodies involve immunization with purified or partially purified antigen preparations. Antigens used are most commonly proteins or peptides, but carb...

Acute-phase serum (APS) collected from Plasmodium berghei-infected rats inhibited phagocytosis of trypsinized rat erythrocytes and of erythrocytes from P. berghei-infected rats. Macrophages (M phi) incubated with APS or heat-aggregated acute-phase serum (HAAPS) for 6 h, followed by 18 h incubation in serum-free medium, exhibited significantly higher levels of phagocytosis than M phi similarly c...

INTRODUCTION We present our work of monitoring 202 different patients with markedly elevated serum index for lipemia whereby serum samples were clear. We tried to clarify the cause of occurrence of these indices which were detected in the years 2006-2010 on Siemens Dimension analyzers. MATERIALS AND METHODS In samples with unusual lipemia index we measured the concentration of lipids (total c...

Cryoglobulins are immunoglobulins that precipitate in serum at temperatures below 37°C and resolubilize upon warming. The clinical syndrome of cryoglobulinemia usually includes purpura, weakness, and arthralgia, but the underlying disease may also contribute other symptoms. Blood samples for cryoglobulin are collected, transported, clotted and spun at 37°C, before the precipitate is allowed to ...

The immunogenesis of the human fetus has been investigated by means of the formation of immunoglobulins in vitro, immunofluorescence, morphological studies, and analysis of the immunoglobulins in the serum. Twenty fetuses which were born alive but died soon after delivery, were studied; their ages ranged from 13 to 31 weeks. The results of the spleen cultures demonstrated the synthesis of IgG a...

The concentrations of serum immunoglobulins (Ig) C, A, and M were correlated with specific features in the $y region of densitometer patterns of serum protein electrophoresis on cellulose acetate membranes; visual analysis of densitometer patterns permitted semiquantitative prediction of values for lgC and lgA. Important immunoglobulin abnormalities, particularly elevations of IgA, were seen in...

INSTRUCTION There is evidence of a relationship between severity of infection and inflammatory response of the immune system. The objective is to assess serum levels of immunoglobulins and to establish its relationship with severity of community-acquired pneumonia (CAP) and clinical outcome. METHODS This was an observational and cross-sectional study in which 3 groups of patients diagnosed wi...