PMID- 33518676 OWN - NLM STAT- MEDLINE DCOM- 20210927 LR - 20210927 IS - 1347-5215 (Electronic) IS - 0918-6158 (Linking) VI - 44 IP - 2 DP - 2021 TI - Anti-allergic Inflammatory Components from the Leaves of Piper crocatum Ruiz & Pav. PG - 245-250 LID - 10.1248/bpb.b20-00726 [doi] AB - Piper crocatum Ruiz & Pav. (P. crocatum), a traditional medicinal plant, has been shown to possess various pharmacological activities, including anticancer activity, antioxidant activity, antibacterial activity, anti-hyperglycemic activity, anti-allergic inflammatory activity and others. To identify the potential anti-allergic inflammatory effective constituents of P. crocatum, 13 single compounds were isolated from the methanol extract of P. crocatum leaves, and their structures were identified by contrasting their NMR spectroscopic data and previously published papers. First, the anti-allergic inflammatory activities of these single compounds were examined by accessing immune function related biomarkers such as nitric oxide (NO) and beta-hexosaminidase. We found that the methanol extract and catechaldehyde (compound 1) potently suppressed NO production. Additionally, Western blot analysis showed that P. crocatum methanol extract and compound 1 suppressed the production of NO by reducing inducible nitric oxide synthase (iNOS) expression in lipopolysaccharide (LPS)-induced RAW264.7 macrophages. Consistent with these observations, P. crocatum methanol extract and compound 1 remarkably decreased beta-hexosaminidase release from RBL-2H3 cells stimulated with 2,4-dinitrophenylated bovine serum albumin (DNP-BSA)-specific immunoglobulin E (IgE) antibodies. Furthermore, 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay indicated that P. crocatum methanol extract and compound 1 exhibited no cytotoxicity to RAW264.7 and RBL-2H3 cells. Based on these findings, compound 1 is suggested as an active anti-allergic inflammatory component of P. crocatum. FAU - Gong, Yue AU - Gong Y AD - College of Pharmacy and Research Institute of Drug Development, Chonnam National University. FAU - Li, Hong Xu AU - Li HX AD - College of Pharmacy, Chungnam National University. FAU - Guo, Rui Hong AU - Guo RH AD - College of Pharmacy and Research Institute of Drug Development, Chonnam National University. FAU - Widowati, Wahyu AU - Widowati W AD - Medical Research Centre, Faculty of Medicine, Maranatha Christian University. FAU - Kim, Young Ho AU - Kim YH AD - College of Pharmacy, Chungnam National University. FAU - Yang, Seo Young AU - Yang SY AD - College of Pharmacy, Chungnam National University. FAU - Kim, Young Ran AU - Kim YR AD - College of Pharmacy and Research Institute of Drug Development, Chonnam National University. LA - eng PT - Journal Article PL - Japan TA - Biol Pharm Bull JT - Biological & pharmaceutical bulletin JID - 9311984 RN - 0 (Anti-Allergic Agents) RN - 0 (Anti-Inflammatory Agents) RN - 0 (Plant Extracts) RN - Y4S76JWI15 (Methanol) SB - IM MH - Animals MH - Anti-Allergic Agents/isolation & purification/*pharmacology MH - Anti-Inflammatory Agents/isolation & purification/*pharmacology MH - Cell Line, Tumor MH - Drug Evaluation, Preclinical MH - Methanol/chemistry MH - Mice MH - Piper/*chemistry MH - Plant Extracts/isolation & purification/*pharmacology MH - Plant Leaves/chemistry MH - RAW 264.7 Cells MH - Rats OTO - NOTNLM OT - Piper crocatum Ruiz & Pav. OT - allergic inflammation OT - catechaldehyde OT - inducible nitric oxide synthase OT - nitric oxide OT - beta-hexosaminidase EDAT- 2021/02/02 06:00 MHDA- 2021/09/28 06:00 CRDT- 2021/02/01 05:50 PHST- 2021/02/01 05:50 [entrez] PHST- 2021/02/02 06:00 [pubmed] PHST- 2021/09/28 06:00 [medline] AID - 10.1248/bpb.b20-00726 [doi] PST - ppublish SO - Biol Pharm Bull. 2021;44(2):245-250. doi: 10.1248/bpb.b20-00726.