PMID- 12686761 OWN - NLM STAT- MEDLINE DCOM- 20030508 LR - 20190910 IS - 1347-8613 (Print) IS - 1347-8613 (Linking) VI - 91 IP - 2 DP - 2003 Feb TI - Augmentation by Bursaphelenchus xylophilus, a pine wood nematode, of polyclonal IgE production induced by lipopolysaccharide plus interleukin-4 in murine splenocytes. PG - 158-62 AB - Bursaphelenchus xylophilus (B. xylophilus) is a pine wood nematode that is known to cause pine wilt disease. We report here that B. xylophilus extracts augmented the polyclonal immunoglobulin E (IgE) production induced by lipopolysaccharide (LPS) plus interleukin-4 (IL-4) both in murine splenocytes and purified B cells as determined by ELISA and ELIspot assays, but they did not cause such a promotion in the absence of either LPS or IL-4. We also observed that the antigen-nonspecific IgE levels were increased in sera of mice treated with B. xylophilus extracts, which were comparable to those of Ascaris suum extracts. These findings suggest that administration of B. xylophilus extracts could suppress allergic diseases via a saturation of mast cell Fcepsilon receptors or/and an inhibition of antigen-specific IgE synthesis to the allergen by a polyclonal response. FAU - Kaji, Hiroaki AU - Kaji H AD - Department of Immunochemistry, Faculty of Pharmaceutical Sciences, Okayama University, Okayama, Japan. FAU - Kawada, Masahiko AU - Kawada M FAU - Tai, Akihiro AU - Tai A FAU - Kanzaki, Hiroshi AU - Kanzaki H FAU - Yamamoto, Itaru AU - Yamamoto I LA - eng PT - Comparative Study PT - Journal Article PL - Japan TA - J Pharmacol Sci JT - Journal of pharmacological sciences JID - 101167001 RN - 0 (Adjuvants, Immunologic) RN - 0 (Lipopolysaccharides) RN - 0 (Receptors, Fc) RN - 0 (Tissue Extracts) RN - 207137-56-2 (Interleukin-4) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - *Adjuvants, Immunologic MH - Animals MH - Ascaris suum/chemistry MH - B-Lymphocytes/drug effects/metabolism MH - Dose-Response Relationship, Drug MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Immunoglobulin E/*biosynthesis MH - In Vitro Techniques MH - Interleukin-4/*pharmacology MH - Lipopolysaccharides/*pharmacology MH - Mast Cells/drug effects/metabolism MH - Mice MH - Mice, Inbred BALB C MH - Nematoda/*physiology MH - Receptors, Fc/antagonists & inhibitors MH - Spleen/cytology/drug effects/*metabolism MH - Stimulation, Chemical MH - Tissue Extracts/*pharmacology EDAT- 2003/04/11 05:00 MHDA- 2003/05/09 05:00 CRDT- 2003/04/11 05:00 PHST- 2003/04/11 05:00 [pubmed] PHST- 2003/05/09 05:00 [medline] PHST- 2003/04/11 05:00 [entrez] AID - 10.1254/jphs.91.158 [doi] PST - ppublish SO - J Pharmacol Sci. 2003 Feb;91(2):158-62. doi: 10.1254/jphs.91.158.