PMID- 35889810 OWN - NLM STAT- MEDLINE DCOM- 20220728 LR - 20220731 IS - 2072-6643 (Electronic) IS - 2072-6643 (Linking) VI - 14 IP - 14 DP - 2022 Jul 12 TI - Sword Bean (Canavalia gladiata) Pod Exerts Anti-Allergic and Anti-Inflammatory Effects through Modulation of Th1/Th2 Cell Differentiation. LID - 10.3390/nu14142853 [doi] LID - 2853 AB - Allergy is an immunoglobulin E (IgE)-mediated process, and its incidence and prevalence have increased worldwide in recent years. Therapeutic agents for allergic diseases are continuously being developed, but side effects follow when used for a long-term use. Therefore, treatments based on natural products that are safe for the body are urgently required. Sword bean (Canavalia gladiata) pod (SBP) has been traditionally used to treat inflammatory diseases, but there is still no scientific basis for its anti-allergic effect. Accordingly, this study investigates the anti-allergic effect and its mechanism of SBP in vitro and in vivo. SBP reduced the nitric oxide production and decreased mRNA and protein expression of inflammatory mediates (inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2)), and inhibited the phosphorylation of nuclear factor kappa B (NF-kappaB), a major signaling molecule in the inflammatory response. Additionally, SBP extract treatment inhibited phosphatidylinositol-3-kinase/mammalian target of rapamycin (PI3K/mTOR) signaling activity to further inhibit degranulation and allergy mediator generation and control the balance of Th1/Th2 cells, which can induce an allergic reaction when disrupted. Furthermore, the SBP extract exhibited anti-allergic effects in anti-dinitrophenyl IgE-induced RBL-2H3 cells and ovalbumin-treated mice. These findings have potential clinical implications for the treatment as well as prevention of allergic diseases. FAU - Hwang, Kyung-A AU - Hwang KA AD - Department of Agrofood Resources, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun 55365, Korea. FAU - Hwang, Yu Jin AU - Hwang YJ AD - Department of Agrofood Resources, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun 55365, Korea. FAU - Hwang, Hye-Jeong AU - Hwang HJ AUID- ORCID: 0000-0002-1948-4442 AD - Department of Agrofood Resources, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun 55365, Korea. AD - Department of Food and Biotechnology, Korea University, Sejong 30019, Korea. FAU - Lee, Sang Hoon AU - Lee SH AD - Department of Food and Biotechnology, Korea University, Sejong 30019, Korea. FAU - Kim, Young Jun AU - Kim YJ AD - Department of Food and Biotechnology, Korea University, Sejong 30019, Korea. LA - eng GR - PJ 01588401/Research Program for Agricultural Science & Technology Development/ GR - PJ 01588402/Research Program for Agricultural Science & Technology Development/ PT - Journal Article DEP - 20220712 PL - Switzerland TA - Nutrients JT - Nutrients JID - 101521595 RN - 0 (Anti-Allergic Agents) RN - 0 (Anti-Inflammatory Agents) RN - 0 (Plant Extracts) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Animals MH - *Anti-Allergic Agents/pharmacology MH - Anti-Inflammatory Agents/pharmacology/therapeutic use MH - Canavalia/metabolism MH - Cell Differentiation MH - *Hypersensitivity/drug therapy MH - Immunoglobulin E/metabolism MH - Mammals/metabolism MH - Mice MH - Plant Extracts/pharmacology/therapeutic use PMC - PMC9322724 OTO - NOTNLM OT - Canavalia gladiata OT - anti-allergic OT - anti-inflammatory OT - sword bean pod COIS- The authors declare no conflict of interest. EDAT- 2022/07/28 06:00 MHDA- 2022/07/29 06:00 PMCR- 2022/07/12 CRDT- 2022/07/27 01:36 PHST- 2022/06/08 00:00 [received] PHST- 2022/06/29 00:00 [revised] PHST- 2022/07/08 00:00 [accepted] PHST- 2022/07/27 01:36 [entrez] PHST- 2022/07/28 06:00 [pubmed] PHST- 2022/07/29 06:00 [medline] PHST- 2022/07/12 00:00 [pmc-release] AID - nu14142853 [pii] AID - nutrients-14-02853 [pii] AID - 10.3390/nu14142853 [doi] PST - epublish SO - Nutrients. 2022 Jul 12;14(14):2853. doi: 10.3390/nu14142853.