التفاصيل البيبلوغرافية
| العنوان: |
The proinflammatory cytokine, interleukin-17A, augments mitochondrial function and neurite outgrowth of cultured adult sensory neurons derived from normal and diabetic rats. |
| المؤلفون: |
Habash, Tarek1,2, Saleh, Ali1, Roy Chowdhury, Subir K.1, Smith, Darrell R.1, Fernyhough, Paul1,2 pfernyhough@sbrc.ca |
| المصدر: |
Experimental Neurology. Nov2015, Vol. 273, p177-189. 13p. |
| مصطلحات موضوعية: |
*NERVE cell culture, *INTERLEUKIN-17, *LABORATORY rats, *SENSORY neurons, *RECEPTIVE fields (Neurology), *NEURONS, *NERVOUS system, *NEUROLOGY |
| مستخلص: |
Background Diabetic neuropathy comprises dying back of nerve endings that reflects impairment in axonal plasticity and regenerative nerve growth. Metabolic changes in diabetes can lead to a dysregulation of hormonal mediators, such as cytokines, that may constrain distal nerve fiber growth. Interleukin-17 (IL-17A), a proinflammatory and neurotropic cytokine produced by T-cells, was significantly reduced in sciatic nerve of streptozotocin (STZ)-diabetic rats. Thus we studied the effect of IL-17A on the phenotype of sensory neurons derived from age matched control or type 1 diabetic rats. The aims were to determine the ability of IL-17A to enhance neurite outgrowth in cultured sensory neurons, investigate the signaling pathways activated by IL-17A, study the role of mitochondria and mechanistically link to neurite outgrowth. Results IL-17A (10 ng/ml; p < 0.05) significantly and dose-dependently increased total neurite outgrowth in cultures of adult dorsal root ganglia (DRG) sensory neurons derived from both control and streptozotocin (STZ)-diabetic rats. This enhancement was mediated by IL-17A-dependent activation of extracellular-regulated protein kinase (ERK) and phosphoinositide-3 kinase (PI-3K) signal transduction pathways. Pharmacological blockade of one of these activated pathways triggered complete inhibition of neurite outgrowth. IL-17A augmented mitochondrial bioenergetic function of sensory neurons derived from control or diabetic rats and this was also mediated via ERK or PI-3K. IL-17A-dependent elevation of bioenergetic function was associated with augmented expression of proteins of the mitochondrial electron transport system complexes. Conclusions IL-17A enhanced axonal plasticity through activation of ERK and PI-3K pathways and was associated with augmented mitochondrial bioenergetic function in sensory neurons. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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