Binding of IgG antibodies to Entodinium spp. in the rumen of sheep (Ovis aries) was investigated by adding IgG, purified from plasma, directly into the rumen. Plasma IgG was sourced from sheep that had or had not been immunized with a vaccine containing whole fixed Entodinium spp. cells. Ruminal fluid was sampled approximately 2 h after each antibody dosing. Binding of protozoa by a specific an...

Actinobacillus actinomycetemcomitans has been closely associated with early-onset, severe periodontitis, and such patients often have serum immunoglobulin G (IgG) antibodies reactive with antigens of this gram-negative pathogen. We examined the functionality and potential importance of these antibodies. The opsonic activity against A. actinomycetemcomitans of sera from 30 patients with rapidly ...

Red Cells, Fresh Frozen Plasma (FFP) and Platelets (RDP/SDP) prepared from donors with group O may have high titers of anti-A, anti-B and/or anti-A,B antibodies. When such components given to non-group patients, this titre can result in haemolytic transfusion reactions (HTRs). Such are generally termed ‘high-titer donors. Significant amounts ABO antigen being present on the platelet surface ant...

OBJECTIVE There have been few studies concerning serum titers of anti-Helicobacter pylori immunoglobulin G (IgG) antibody >12 months after eradication of the original infection. Moreover, clinical usefulness of immunoglobulin A (IgA) antibody levels remains to be established. The purpose of this study was to investigate long-term responses of serum IgG-specific and IgA-specific antibodies to H ...

In a previous randomized Phase III trial (P. O. Livingston et al, J. Clin. Oncol., 12: 1036-1044, 1994), we demonstrated that immunization with GM2 and bacille Calmette-Guerin reduced the risk of relapse in stage III melanoma patients who were free of disease after surgical resection and who had no preexisting anti-GM2 antibodies. That vaccine formulation induced IgM anti-GM2 antibodies in 74% ...

introduction:torch infections causing via toxoplasma gondii, other microorganisms (e.g., treponema pallidum), rubella virus, cytomegalovirus (cmv) and the herpes simplex virus (hsv) types 1 and 2 during the first trimester of pregnancy can lead to severe fetal anomalies or even fetal loss. the current study determined the serological data of torch infections in women who were in their first tri...

Parasite-derived glycosylphosphatidylinositol (GPI) is believed to be a major inducer of the pathways leading to pathology and morbidity during Plasmodium falciparum infection and has been termed a malaria "toxin." The generation of neutralizing anti-GPI ("antitoxic") antibodies has therefore been hypothesized to be an important step in the acquisition of antidisease immunity to malaria; howeve...

background and objectives: association between mycoplasma pneumoniae infection and increased risk for brain stroke has been well understood. hence, the value of serologic tests for assessing causative relationship between this infection and brain stroke seems to be high. the present study aimed to determine serum level of anti- mycoplasma pneumoniae antibodies in patients with brain stroke and ...

Both immunoglobulin M (IgM) and IgG antibodies to varicella-zoster virus (VZV) were detectable in a solid-phase radioimmunoassay with 125I-labeled goat antisera to human immunoglobulins. Primary infection with VZV was associated with early production of IgM and IgG antibodies and rapid development of lymphocyte transformation to VZV antigen. Among eight subjects with varicella tested 1 to 4 day...