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Abstract Title:

Bromelain reversed electrolyte imbalance in the chronically constricted sciatic nerve of Wistar rats.

Abstract Source:

Naunyn Schmiedebergs Arch Pharmacol. 2019 Oct 26. Epub 2019 Oct 26. PMID: 31655851

Abstract Author(s):

Ahmed Olalekan Bakare, Bamidele Victor Owoyele

Article Affiliation:

Ahmed Olalekan Bakare

Abstract:

Derangement of electrolyte in the sensory nervous system has been attributed to the development and maintenance of hyperalgesic and allodynic symptoms in painful neuropathy. This study investigated the effect of bromelain on electrolyte imbalance in chronically constricted sciatic nerve of rats (a model of neuropathic pain). Forty Wistar rats, divided into five groups of eight animals each were used for this study. von Frey filaments, tail immersion and acetone spray tests were used to assessed allodynic and thermal hyperalgesic symptoms in the Wistar rats. Sodium ion (Na), potassium ion (K), calcium ion (Ca) and chloride ion (Cl) concentrations as well as sodium-potassium and calcium electrogenic pump (Na-K ATPase and Ca ATPase, respectively) activities were estimated using spectrophotometry techniques. Bromelain significantly (p<0.05) reversed elevation of Naand Caconcentration compared with sciatic nerve chronic constriction injury (snCCI) group (35.68± 1.71 vs 44.46 ± 1.24 mg/ml/mg protein and 1.06 ± 0.19 vs 6.66 ± 0.03 mg/ml/mg protein, respectively). There were also significant (p<0.05) increases in the level of K(0.84± 0.02 vs 0.36 ± 0.05 mg/ml/mg protein) and Cl(18.51± 0.29 vs 15.82 ± 0.21 mg/ml/mg protein). Bromelain reduced the activities of Caelectrogenic pumps significantly compared with snCCI. This study therefore suggests that bromelain mitigated electrolyte imbalance in chronic constricted injury of the sciatic nerve implying that this may be an important mechanism for the anti-nociceptive effect of bromelain.

Study Type : Animal Study

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