1. Does combined therapy of curcumin and epigallocatechin gallate have a synergistic neuroprotective effect against spinal cord injury?
- Author
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Jana Dubisova, Meic H. Schmidt, Kristyna Zaviskova, Jiri Ruzicka, Meena Jhanwar-Uniyal, Barbora Svobodova, Lucia Machova Urdzikova, Anubhav G. Amin, Šárka Kubinová, Pavla Jendelova, and Kristyna Karova
- Subjects
0301 basic medicine ,epigallocatechin gallate ,medicine.medical_treatment ,Pharmacology ,Epigallocatechin gallate ,Neuroprotection ,lcsh:RC346-429 ,Glial scar ,Lesion ,spinal cord injury ,curcumin ,inflammatory response ,neural regeneration ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Developmental Neuroscience ,medicine ,Spinal cord injury ,Macrophage inflammatory protein ,lcsh:Neurology. Diseases of the nervous system ,Chemistry ,medicine.disease ,030104 developmental biology ,Cytokine ,Curcumin ,medicine.symptom ,030217 neurology & neurosurgery ,Research Article - Abstract
Systematic inflammatory response after spinal cord injury (SCI) is one of the factors leading to lesion development and a profound degree of functional loss. Anti-inflammatory compounds, such as curcumin and epigallocatechin gallate (EGCG) are known for their neuroprotective effects. In this study, we investigated the effect of combined therapy of curcumin and EGCG in a rat model of acute SCI induced by balloon compression. Immediately after SCI, rats received curcumin, EGCG, curcumin + EGCG or saline [daily intraperitoneal doses (curcumin, 6 mg/kg; EGCG 17 mg/kg)] and weekly intramuscular doses (curcumin, 60 mg/kg; EGCG 17 mg/kg)] for 28 days. Rats were evaluated using behavioral tests (the Basso, Beattie, and Bresnahan (BBB) open-field locomotor test, flat beam test). Spinal cord tissue was analyzed using histological methods (Luxol Blue-cresyl violet staining) and immunohistochemistry (anti-glial fibrillary acidic protein, anti-growth associated protein 43). Cytokine levels (interleukin-1β, interleukin-4, interleukin-2, interleukin-6, macrophage inflammatory protein 1-alpha, and RANTES) were measured using Luminex assay. Quantitative polymerase chain reaction was performed to determine the relative expression of genes (Sort1, Fgf2, Irf5, Mrc1, Olig2, Casp3, Gap43, Gfap, Vegf, NfκB, Cntf) related to regenerative processes in injured spinal cord. We found that all treatments displayed significant behavioral recovery, with no obvious synergistic effect after combined therapy of curcumin and ECGC. Curcumin and EGCG alone or in combination increased axonal sprouting, decreased glial scar formation, and altered the levels of macrophage inflammatory protein 1-alpha, interleukin-1β, interleukin-4 and interleukin-6 cytokines. These results imply that although the expected synergistic response of this combined therapy was less obvious, aspects of tissue regeneration and immune responses in severe SCI were evident.
- Published
- 2018
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