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Erratum to: Palmitoylethanolamide and luteolin ameliorate development of arthritis caused by injection of collagen type II in mice.

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ERRATUM

Open Access

Erratum to: Palmitoylethanolamide and

luteolin ameliorate development of arthritis

caused by injection of collagen type II in

mice

Daniela Impellizzeri

1†

, Emanuela Esposito

1†

, Rosanna Di Paola

1

, Akbar Ahmad

1

, Michela Campolo

1

, Angelo Peli

2

,

Valeria Maria Morittu

3

, Domenico Britti

3

and Salvatore Cuzzocrea

1,4*

The authors would like to issue an erratum for this article [1], and would like to declare the following competing interests which we inadvertently failed to include in our original publication. The authors would like to apologise for this omission.

In addition, a detailed method for co-ultramicronization process is reported:

Co-ultramicronization process was performed in a jet-mill equipment endowed with a chamber of 300 mm in diameter which operates with“spiral technology” and was driven by compressed air at 10-12 bars. The crashing is determined by the high number of collisions that occurs among particles, as a result of the high level of kinetic– not mechanical - energy. This process was effective not only in reducing the products particle size, but also in modifying their crystalline structure. Observations by scanning electron microscopy (SEM) shows an intimate intermixing of the two components of the composite, while analysis throw differential scanning calorimetry (DSC) and X-ray diffraction (XRD) have documented the transformation in a new crystalline form different from the original two, definable with“a higher energy content form.” The composite shows the following particle size distribution: 96 % <10μm; 80 % <5 μm; 40 % <2μm (J Neuroinflammation 2013 10:91).

Competing interests

Prof. Salvatore Cuzzocrea, researcher on the study team, is a co-inventor on a patent (Application number: 20150057269) with Epitech, along with academic investigators from different institutions and not studied in the above-referenced manuscript. In particular, this patent deals with compositions and methods for the modulation of amidases capable of hydrolysing N-acylethanolamines useable in the therapy of inflammatory diseases. No other authors have competing interests.

Author details

1Department of Biological and Environmental Sciences, University of Messina,

Messina, Italy.2Clinical Veterinary Department Alma Mater Studiorum,

University of Bologna, Bologna, Italy.3Department of Health Sciences V. le Europa, Campus S. Venuta, Germaneto, Catanzaro 88100, Italy.4Manchester

Biomedical Research Centre, Manchester Royal Infirmary, University of Manchester, Manchester, UK.

Received: 20 April 2016 Accepted: 21 April 2016

References

1. Impellizzeri D, Esposito E, Di Paola R, Ahmad A, Campolo M, Peli A, et al. Palmitoylethanolamide and luteolin ameliorate development of arthritis caused by injection of collagen type II in mice. Arthritis Res Ther. 2013;15:R192.

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* Correspondence:salvator@unime.it

Equal contributors 1

Department of Biological and Environmental Sciences, University of Messina, Messina, Italy

4

Manchester Biomedical Research Centre, Manchester Royal Infirmary, University of Manchester, Manchester, UK

© 2016 Impellizzeri et al. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

Impellizzeriet al. Arthritis Research & Therapy (2016) 18:101 DOI 10.1186/s13075-016-0999-9

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