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Hydrogen sulfide protects against the development of experimental cerebral malaria in a C57BL/6 mouse model

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Hydrogen sulfide (H2S) has anti-inflammatory and neuroprotective properties, particularly during pathological processes. Experimental cerebral malaria (ECM), which is caused by vascular leakage into the brain, is characterized by inflammation, neurological… Click to show full abstract

Hydrogen sulfide (H2S) has anti-inflammatory and neuroprotective properties, particularly during pathological processes. Experimental cerebral malaria (ECM), which is caused by vascular leakage into the brain, is characterized by inflammation, neurological deficits and cerebral hemorrhage. The present study investigated the correlation between ECM genesis and the levels of H2S. The results indicated that the levels of H2S derived from the brain decreased over time following ECM infection, and that the low H2S bioavailability was partially caused by decreased expression of the H2S generating enzyme, cystathionine-β-synthase. Administration of NaHS (an exogenous donor of H2S) provided protection against ECM. NaHS inhibited the destruction of the blood brain barrier and the secretion of proinflammatory biomarkers, including interluekin-18, matrix metalloproteinase-9 and serum cluster of differentiation 40 into the brain during ECM. In conclusion, these results suggested that low levels of H2S in brain contributed to the progression of ECM, and that H2S donor administration may represent a potential protective therapy against ECM.

Keywords: experimental cerebral; cerebral malaria; ecm; hydrogen sulfide; brain; h2s

Journal Title: Molecular Medicine Reports
Year Published: 2017

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