| Full text | |
| Author(s): |
Pinke, Karen Henriette
[1]
;
Zorzella-Pezavento, Sofia Fernanda Goncalves
[1]
;
De Campos Fraga-Silva, Thais Fernanda
[1]
;
Mimura, Luiza Ayumi Nishiyama
[1]
;
De Oliveira, Larissa Ragozo Cardoso
[1]
;
Ishikawa, Larissa Lumi Watanabe
[1]
;
Fernandes, Ana Angelica Henrique
[2]
;
Lara, Vanessa Soares
[3]
;
Sartori, Alexandrina
[1]
Total Authors: 9
|
| Affiliation: | [1] Sao Paulo State Univ, Inst Biosciences, Dept MicroBiol, Immunol, UNESP, Rua . Plinio Pinto Silva, S/N, Distrito Rubiao Jr, BR-18618-691 Botucatu, SP - Brazil
[2] Sao Paulo State Univ, Inst Biosciences, Dept Chem, Biochem, UNESP, Botucatu, SP - Brazil
[3] Univ Sao Paulo, Bauru Sch Dent, Dept Surg, Stomatology, Pathology, Radiology, USP, Bauru, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | NEUROTHERAPEUTICS; v. 17, n. 1, SI, p. 218-234, JAN 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Multiple sclerosis (MS) is a chronic autoimmune disease of the central nervous system (CNS) characterized by extensive inflammation, demyelination, axonal loss and gliosis. Evidence indicates that mast cells contribute to immunopathogenesis of both MS and experimental autoimmune encephalomyelitis (EAE), which is the most employed animal model to study this disease. Considering the inflammatory potential of mast cells, their presence at the CNS and their stabilization by certain drugs, we investigated the effect of ketotifen fumarate (Ket) on EAE development. EAE was induced in C57BL/6 mice by immunization with MOG(35-55) and the animals were injected daily with Ket from the seventh to the 17th day after disease induction. This early intervention with Ket significantly reduced disease prevalence and severity. The protective effect was concomitant with less NLRP3 inflammasome activation, rebalanced oxidative stress and also reduced T cell infiltration at the CNS. Even though Ket administration did not alter mast cell percentage at the CNS, it decreased the local CPA3 and CMA1 mRNA expression that are enzymes typically produced by these cells. Evaluation of the CNS-barrier permeability indicated that Ket clearly restored the permeability levels of this barrier. Ket also triggered an evident lymphadenomegaly due to accumulation of T cells that produced higher levels of encephalitogenic cytokines in response to in vitro stimulation with MOG. Altogether these findings reinforce the concept that mast cells are particularly relevant in MS immunopathogenesis and that Ket, a known stabilizer of their activity, has the potential to be used in MS control. (AU) | |
| FAPESP's process: | 14/00239-6 - Involvement of mast cells in the protective effect of vitamin D on experimental autoimmune encephalomyelitis |
| Grantee: | Karen Henriette Pinke |
| Support Opportunities: | Scholarships in Brazil - Doctorate |