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Inflammation Research

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Open Access 01-09-2018 | Original Research Paper

Leptin stimulates tissue rat mast cell pro-inflammatory activity and migratory response

Authors: Paulina Żelechowska, Justyna Agier, Sylwia Różalska, Magdalena Wiktorska, Ewa Brzezińska-Błaszczyk

Published in: Inflammation Research | Issue 9/2018

Abstract

Objective

The aim of this study was to determine whether leptin, a member of the adipocytokines involved in immune and inflammatory response regulation, may influence some aspects of mast cell biology.

Materials and methods

Experiments were done in vitro on fully mature tissue rat mast cells isolated from the peritoneal cavity, and leptin was used at concentrations 0.001–100 ng/ml. The effect of leptin on mast cell degranulation (histamine release assay), intracellular Ca²⁺ level (fluorimetry), pro-inflammatory mediator release (ELISA technique), surface receptor expression (flow cytometry and confocal microscopy), and migration (Boyden microchamber assay) was estimated.

Results

Leptin was found to stimulate mast cells to degranulation and histamine release. It induced the intracellular Ca²⁺ increase, as well. In response to leptin stimulation, mast cells generated and released cysLTs and chemokine CCL3. Leptin-induced upregulation of CYSLTR1 and CYSLTR2 surface expression was observed. Moreover, this adipocytokine stimulated mast cells to migratory response, even in the absence of extracellular matrix (ECM) proteins.

Conclusions

Our observations clearly documented that leptin promotes the pro-inflammatory activity of mast cells, and it thereby engages these cells in the inflammatory processes.

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Title: Leptin stimulates tissue rat mast cell pro-inflammatory activity and migratory response
Authors: Paulina Żelechowska
Justyna Agier
Sylwia Różalska
Magdalena Wiktorska
Ewa Brzezińska-Błaszczyk
Publication date: 01-09-2018
Publisher: Springer International Publishing
Published in: Inflammation Research / Issue 9/2018
Print ISSN: 1023-3830
Electronic ISSN: 1420-908X
DOI: https://doi.org/10.1007/s00011-018-1171-6

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Leptin stimulates tissue rat mast cell pro-inflammatory activity and migratory response

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Materials and methods

Results

Conclusions

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