@conference{
author = "Lazarević, Milica and Stegnjaić, Goran and Diamantis, Dimitris and Papaemmanouil, Christina and Nikolovski, Neda and Jevtić, Bojan and Tzakos, Andreas G and Miljković, Đorđe",
year = "2021",
abstract = "Rosmarinic acid is a polyphenolic compound, abundantly presentin herbs of the Lamiaceae
family. The aim of the study was to evaluate a recently developed rosmarinic acid
derivative (RAd), with an enhanced ability of diffusion through biological membranes 1, in
preclinical settingsof the central nervous system autoimmunity. To this extent,
experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis
was used. EAE was induced in DA rats by subcutaneous injection of autologous spinal
cord homogenate 2, while treatment with RAd (30 mg/kg) started at 7 day post
immunization and lasted for 15 days. Subcutaneous RAd administration successfully
ameliorated EAE, leading to abbreviation of the disease duration and reducement of
maximal, cumulative and meanclinical score. Also, RAd effects on draining lymph node
cells (DLNC) isolated in the inductive phase of EAE and spinal cord immune cells (SCIC)
obtained at the peak of the diseasewere evaluated. In vitro treatment with RAd (5 μM)
reduced production of major encephalitogenic cytokines, i.e.interferon (IFN)-γ and
interleukin (IL)-17, both in DLNC and SCIC. The reduction of IFN-γ and IL-17
production under the influence of RAd was also detected in the CD4+ T cells purified
fromDLNC, thus suggesting that RAd had a direct effect on CD4+ T cells. Additionally,
the effects of in vitro treatment with RAd were examinedon macrophages (Mf), immune
cells with important role in EAE pathogenesis. Treatment of peritoneal Mf,obtained from
non-immunized DA rats, with RAd (25 μM) led to reduction of NO and IL-6 production,
exterted no effect on IL-1beta production, and elevated tumor necrosis factor production in
Mf. Expression of MHC II and co-stimulatory molecule CD80, the phagocytic ability and
the production of reactive oxygen species in RAd-treated Mf were also downregulated.
Our results imply that RAd possesses anti-inflammatory and antiencephalitogenicproperties. Thus, further studies on the mechanisms behind the observed
effects and their relevance for the therapy of multiple sclerosis are warranted.",
publisher = "Belgrade: Faculty of Chemistry",
journal = "Serbian Biochemical Society Tenth Conference: with international participation: Biochemical Insights into Molecular Mechanisms; 2021 Sep 24; Kragujevac, Serbia",
title = "The effect of novel rosmarinic acid derivative on the pathogenesis of experimental autoimmune encephalomyelitis in rats",
pages = "79-80",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_6297"
}
