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- Title
LC-ESI-IT-MS/MS and MALDI-TOF Approach: Identification of Natural Polymers from Rhizophora mangle Barks and Determination of Their Analgesic and Anti-inflammatory Properties.
- Authors
de Souza Mesquita, Leonardo Mendes; Rodrigues, Caroline Fabri Bittencourt; da Rocha, Cláudia Quintino; Bianchim, Mayara Silveira; Rodrigues, Clenilson Martins; de Oliveira, Vanda Maria; Gaeta, Henrique Hessel; Belchor, Mariana Novo; Toyama, Marcos Hikari; Vilegas, Wagner
- Abstract
Abstract: We recognize the chemical composition of the acetonic extract of Rhizophora mangle barks (AERM) using mass spectrometry analysis [liquid chromatography (LC)-ESI-IT-MS/MS and matrix-assisted laser desorption/ionization-time of flight-MS (MALDI-TOF)]. Analgesic activity was evaluated by formalin and tail-flick experimental assays. Anti-inflammatory activity was performed by paw edema test induced by carrageenan and 48/80 compounds. The first series of experiments involved [LC]-FIA-IT-MS/MS with 11 separated catechins derivatives until degree of polymerization 3 (DP3). The spectra obtained by MALDI-TOF analysis of the AERM presented two homologous series: one based on polymers of m/z 288 Da increments (up to DP12) and another series based on polymers of m/z [288 + 162] Da increments (up to DP11). In addition to these series of flavan-3-ol, each DP had a subset of masses with a variation of − 16 Da (homologous series of afzelechins—m/z 873-3465 Da) and + 16 Da (homologous series of gallocatechins—m/z 905-3497 Da). A similar pattern with homologous series of gallocatechins and afzelechins could also be observed for a fifth and a sixth monohexoside series: glucogallocatechins (m/z 779-3371) and glucoafzelechins (m/z 747-3339). The intraperitoneal administration of different doses of AERM (50, 150 and 300 µg mL−1) have a morphine-like effect and intense anti-inflammatory activity. Graphical Abstract:
- Subjects
LIQUID chromatography; MASS spectrometry; BIOPOLYMERS; RED mangrove; ANALGESICS; ANTI-inflammatory agents
- Publication
Natural Products & Bioprospecting, 2019, Vol 9, Issue 1, p23
- ISSN
2192-2209
- Publication type
Article
- DOI
10.1007/s13659-018-0192-8