background: recurrent spontaneous abortion (rsa) is defined as three or more se-quential abortions before the twentieth week of gestation. there are evidences to sup-port an allo-immunologic mechanism for rsa. one of the methods for treatment of rsa is leukocyte therapy; however there is still controversy about effectiveness of this method. objectives: to evaluate the effectiveness of leukocyte...

Background: Recurrent spontaneous abortion (RSA) is defined as three or more se-quential abortions before the twentieth week of gestation. There are evidences to sup-port an allo-immunologic mechanism for RSA. One of the methods for treatment of RSA is leukocyte therapy; however there is still controversy about effectiveness of this method. Objectives: To evaluate the effectiveness of leukocyte...

HLA immunization is a common complication of transfusion therapy in 30% to 60% of oncohematologic patients. Evidence shows that leukocytes present in cellular blood products are the main component involved in the occurrence of HLA immunization, and several studies showed that leukocyte-poor blood products are less able to induce it. However, leukocyte-poor platelet concentrates obtained by conv...

To simplify the construction of monoclonal antibody (MAb) libraries to complex biological systems, the use of a cascade procedure has been investigated. The procedure continually restricts MAb production to those antigens previously so unidentified. Murine macrophage membranes were detergent-solubilized and purified by Lens culinaris lectin affinity chromatography. Prior to immunization of rats...

As previously reported, inflammatory activity initiated by intradermal injection of multiple growing feather (GF)-pulps a chicken with lipopolysaccharide, and the subsequent periodic sampling GFs blood, enables longitudinal evaluation in vivo tissue- systemic-inflammatory activities ex laboratory analyses. To demonstrate suitability this two-window approach to monitor assess vaccine responses, ...

Chemokine-directed leukocyte migration is a critical component of all innate and adaptive immune responses. The atypical chemokine receptor ACKR2 is expressed by lymphatic endothelial cells and scavenges pro-inflammatory CC chemokines to indirectly subdue leukocyte migration. This contributes to the resolution of acute inflammatory responses in vivo. ACKR2 is also universally expressed by innat...

Streptococcus pneumoniae is an important cause of morbitity and mortality worldwide. Capsule-specific IgG1 and IgG2 Abs are induced upon vaccination with polysaccharide-based vaccines that mediate host protection. We compared the protective capacity of human recombinant serogroup 6-specific IgG1 and IgG2 Abs in mice deficient for either leukocyte FcR or complement factors. Human IgG1 was found ...

Chemokines play a profound role in leukocyte trafficking and the development of adaptive immune responses. Perhaps due to their importance in host defense, viruses have adopted many of the hallmarks displayed by chemokines. In particular, viral MIP-II (vMIP-II) is a human chemokine homologue that is encoded by human herpes virus 8. vMIP-II is angiogenic, selectively chemotactic for Th2 lymphocy...

The incidence and consequences of HLA and non-HLA immunization were evaluated in 229 patients with aplastic thrombocytopenia. All patients were transfused with prestorage filtered red blood cells and platelets. On admission, 29 patients presented with HLA antibodies due to prior immunization by pregnancy and/or blood transfusions. Of the 200 patients showing no detectable HLA antibodies on admi...

The hypothesis that atherosclerotic processes are mostly caused by immune (autoimmune) mechanisms has recently been gaining attraction. At the same time, autoimmune of atherogenesis not become generally accepted and requires additional evidence. Previously, we were able to induce changes in aortic wall similar those observed early stages human atherosclerosis, also produce visceral obesity norm...