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

  • Daniela Impellizzeri1,
  • Emanuela Esposito1,
  • Rosanna Di Paola1,
  • Akbar Ahmad1,
  • Michela Campolo1,
  • Angelo Peli2,
  • Valeria Maria Morittu3,
  • Domenico Britti3 and
  • Salvatore Cuzzocrea1, 4Email author
Contributed equally
Arthritis Research & Therapy201618:101

Received: 20 April 2016

Accepted: 21 April 2016

Published: 5 May 2016

The original article was published in Arthritis Research & Therapy 2013 15:4055

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 % <10 μm; 80 % <5 μm; 40 % <2 μm (J Neuroinflammation 2013 10:91).



Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, 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 ( applies to the data made available in this article, unless otherwise stated.

Authors’ Affiliations

Department of Biological and Environmental Sciences, University of Messina, Messina, Italy
Clinical Veterinary Department Alma Mater Studiorum, University of Bologna, Bologna, Italy
Department of Health Sciences V. le Europa, Catanzaro, Italy
Manchester Biomedical Research Centre, Manchester Royal Infirmary, University of Manchester, Manchester, UK


  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.View ArticlePubMedPubMed CentralGoogle Scholar


© Impellizzeri et al. 2016