Abstract

Receptor for advanced glycation end products (RAGE) triggers an intracellular signalling pathways of various proinflammatory ligands. Solubile form of RAGE (sRAGE) in human plasma can hinder the function of RAGE and can have the role in the pathogenesis of inflammatory diseases. In patients with multiple sclerosis (MS), altered level of sRAGE in plasma and cerebrospinal fluid has been found. In our study, we tried to identify possible association of sRAGE serum level with MS. Serum levels of sRAGE were detected by ELISA in 44 MS patients (22 patients with rapid progression of MS and 22 patients with slow progression of MS according to the MSSS score) and 32 healthy control subjects. We found significantly increased level of sRAGE in serum of MS patients when compared to controls. No significant differences in serum level of sRAGE where found between rapidly progressing and slow progressing subgroup of MS patients. Our results suggest for the role of sRAGE in MS ethiopathogenesis, but we did not find any association of sRAGE in serum with the rate of MS disability progression.

Highlights

  • Alzheimer’s disease (AD) is an incurable neurodegenerative disease characterized by progressive dementia

  • The results of the present study indicate that development of the neuronal hypoxic tolerance induced by the three-trial, in contrast to one-trial, mild hypoxic preconditioning is apparently largely associated with the activation of CREB, as well as brain-derived neurotrophic factor (BDNF) and Bcl-2 overexpression

  • No significant differences in serum level of Solubile form of RAGE (sRAGE) where found between rapidly progressing and slow progressing subgroup of multiple sclerosis (MS) patients.Our results suggest for the role of sRAGE in MS ethiopathogenesis, but we did not find any association of sRAGE in serum with the rate of MS disability progression

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Summary

Introduction

Alzheimer’s disease (AD) is an incurable neurodegenerative disease characterized by progressive dementia. The aim of the study was to characterize the effects of streptozocin (STZ)-indced diabetes on learning and memory of 5XFAD and wild-type (WT) mice in Morris water maze (MWM) at ages 2 and 6 months and on brain amyloid load. Existing evidence suggests GABAergic system is involved in pathophysiology of Alzheimer’s disease (AD) via inhibitory interneuron deficits (Verret et al, 2012) and decrease in functional GABAA receptors (Limon et al, 2012). Our concept: low doses of muscimol may prevent learning/memory deficits in intracerebroventricular (icv) streptozocin (STZ)-induced AD nontransgenic rat model. The Sigma-1 receptor is a chaperone protein that modulates intracellular calcium signalling of the endoplasmatic reticulum and is involved in learning and memory processes.The aim of the present study was to compare in vitro Ca2+ concentration modulating activity and in vivo behavioural effects of enantiomers of methylphenylpiracetam, a novel positive allosteric modulator of Sigma-1 receptors

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