PMID- 33307057 OWN - NLM STAT- MEDLINE DCOM- 20210308 LR - 20210308 IS - 1872-7573 (Electronic) IS - 0378-8741 (Linking) VI - 268 DP - 2021 Mar 25 TI - Chemical composition of Prunus padus L. flower extract and its anti-inflammatory activities in primary bone marrow-derived macrophages. PG - 113678 LID - S0378-8741(20)33566-2 [pii] LID - 10.1016/j.jep.2020.113678 [doi] AB - ETHNOPHARMACOLOGICAL RELEVANCE: Prunus padus L. has been traditionally used in European ethnomedicine as a treatment for internal and external purposes and is mainly used to reduce inflammation, pain and fever. The activities of P. padus flower extracts are not well characterized, and additional experimental studies at the molecular level are needed to confirm the ethnobotanical findings. AIM OF THE STUDY: To assess the potential of P. padus flower extract (PPFE) as a source of bioactive compounds through the characterization of its chemical composition and antioxidant, anti-collagenase, and anti-inflammatory activities. MATERIALS AND METHODS: The ethanolic extract (1:10 w/v in ethanol solution) from P. padus flowers was subjected to phytochemical analysis and evaluation of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity. Anti-collagenase activity was determined using a spectrophotometric method in vitro. The effect of PPFE on inflammation was evaluated by measuring specific markers using flow cytometry and assessing pro-inflammatory cytokine (IL-6) release by bone marrow-derived macrophages (BMDMs) ex vivo. RESULTS: The major components of the ethanolic extract of P. padus flowers were quercetin diglycosides, chlorogenic acid and N',N''-dicaffeoyl,N'''-coumaroyl spermidine. The total phenolic content of PPFE was 85.19 mg GAE/g extract, and the EC(50) value in the DPPH assay was 0.55 mg/ml. PPFE exhibited the ability to inhibit collagenase activity in a dose-dependent manner. Preincubation of BMDMs with PPFE reduced the population of M1 (pro-inflammatory) and increased the population of M2 (anti-inflammatory) macrophages. Furthermore, PPFE decreased pro-inflammatory cytokine IL-6 release from BMDMs. CONCLUSIONS: PPFE is a rich source of bioactive compounds and possesses considerable anti-inflammatory properties, supporting its use in ethnomedicine for the reduction of inflammatory processes. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Sile, Inga AU - Sile I AD - Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006, Riga, Latvia; Department of Dosage Form Technology, Riga Stradins University, 16 Dzirciema Str, Riga, LV-1007, Latvia. Electronic address: inga.sile@farm.osi.lv. FAU - Videja, Melita AU - Videja M AD - Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006, Riga, Latvia; Department of Pharmaceutical Chemistry, Riga Stradins University, 16 Dzirciema Str, Riga, LV-1007, Latvia. Electronic address: melita.videja@farm.osi.lv. FAU - Makrecka-Kuka, Marina AU - Makrecka-Kuka M AD - Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006, Riga, Latvia. Electronic address: makrecka@farm.osi.lv. FAU - Tirzite, Dace AU - Tirzite D AD - Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006, Riga, Latvia. Electronic address: tirzite@latnet.lv. FAU - Pajuste, Karlis AU - Pajuste K AD - Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006, Riga, Latvia. Electronic address: kpajuste@osi.lv. FAU - Shubin, Kirill AU - Shubin K AD - Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006, Riga, Latvia. Electronic address: kir101@osi.lv. FAU - Krizhanovska, Valerija AU - Krizhanovska V AD - Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006, Riga, Latvia. Electronic address: valerija@osi.lv. FAU - Grinberga, Solveiga AU - Grinberga S AD - Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006, Riga, Latvia. Electronic address: solveiga@osi.lv. FAU - Pugovics, Osvalds AU - Pugovics O AD - Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006, Riga, Latvia. Electronic address: osvalds@osi.lv. FAU - Dambrova, Maija AU - Dambrova M AD - Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006, Riga, Latvia; Department of Pharmaceutical Chemistry, Riga Stradins University, 16 Dzirciema Str, Riga, LV-1007, Latvia. Electronic address: maija.dambrova@farm.osi.lv. LA - eng PT - Journal Article DEP - 20201208 PL - Ireland TA - J Ethnopharmacol JT - Journal of ethnopharmacology JID - 7903310 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Plant Extracts) SB - IM MH - Animals MH - Anti-Inflammatory Agents/isolation & purification/*pharmacology MH - Dose-Response Relationship, Drug MH - *Flowers MH - Macrophages/*drug effects/metabolism MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Plant Extracts/isolation & purification/*pharmacology MH - *Prunus OTO - NOTNLM OT - Anti-inflammatory activity OT - Ethanolic extract OT - GC-MS OT - LC-MS OT - Prunus padus EDAT- 2020/12/12 06:00 MHDA- 2021/03/09 06:00 CRDT- 2020/12/11 20:09 PHST- 2020/10/20 00:00 [received] PHST- 2020/12/02 00:00 [revised] PHST- 2020/12/04 00:00 [accepted] PHST- 2020/12/12 06:00 [pubmed] PHST- 2021/03/09 06:00 [medline] PHST- 2020/12/11 20:09 [entrez] AID - S0378-8741(20)33566-2 [pii] AID - 10.1016/j.jep.2020.113678 [doi] PST - ppublish SO - J Ethnopharmacol. 2021 Mar 25;268:113678. doi: 10.1016/j.jep.2020.113678. Epub 2020 Dec 8.