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Phycocyanin plus antigen-entrapped microparticles enhance IgA response.
2004 JUL 7 - (NewsRx.com & NewsRx.net) -- Phycocyanin enhances secretary IgA antibody response and suppresses allergic IgE antibody response in mice immunized with antigen-entrapped biodegradable microparticles.
According to a study from Japan, "In the present study, we have investigated the effects of phycocyanin, a biliprotein of Spirulina platensis, on mucosal and systemic immune responses and allergic inflammation in C3H/HeN and BALB/cA mice. To induce the antigen-specific antibodies in the peripheral lymphoid tissues such as Peyer's patches and mesenteric lymph nodes, biodegradable ovalbumin-entrapped poly (DL-lactide-co-glycolide) particles were used as an antigen. Two weeks after the onset of phycocyanin ingestion, mice were immunized with an aqueous ovalbumin (OVA) solution."
"Starting at 1 week after the primary immunization, the mice were subjected to oral immunization with the biodegradable OVA microparticles twice a week," said C. Nemoto-Kawamura and colleagues at Kagawa Nutrition University. "IgA, IgE, and IgG1 antibodies were determined by ELISA. The OVA microparticles of 4-micrometer diameter successfully induced antigen-specific antibodies. In the mice that received phycocyanin treatment for 6 weeks, a marked increase in the antigen-specific, as well as the total, IgA antibody level was observed in the Peyer's patches, mesenteric lymph nodes and intestinal mucosa as well as in the spleen cells."
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