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Träfflista för sökning "WFRF:(Bakalkin Georgy) ;pers:(Artemenko Konstantin)"

Sökning: WFRF:(Bakalkin Georgy) > Artemenko Konstantin

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2.
  • Bakalkin, Georgy, et al. (författare)
  • Prodynorphin mutations cause the neurodegenerative disorder spinocerebellar ataxia type 23.
  • 2010
  • Ingår i: American Journal of Human Genetics. - : Elsevier BV. - 0002-9297 .- 1537-6605. ; 87:5, s. 593-603
  • Tidskriftsartikel (refereegranskat)abstract
    • Spinocerebellar ataxias (SCAs) are dominantly inherited neurodegenerative disorders characterized by progressive cerebellar ataxia and dysarthria. We have identified missense mutations in prodynorphin (PDYN) that cause SCA23 in four Dutch families displaying progressive gait and limb ataxia. PDYN is the precursor protein for the opioid neuropeptides, α-neoendorphin, and dynorphins A and B (Dyn A and B). Dynorphins regulate pain processing and modulate the rewarding effects of addictive substances. Three mutations were located in Dyn A, a peptide with both opioid activities and nonopioid neurodegenerative actions. Two of these mutations resulted in excessive generation of Dyn A in a cellular model system. In addition, two of the mutant Dyn A peptides induced toxicity above that of wild-type Dyn A in cultured striatal neurons. The fourth mutation was located in the nonopioid PDYN domain and was associated with altered expression of components of the opioid and glutamate system, as evident from analysis of SCA23 autopsy tissue. Thus, alterations in Dyn A activities and/or impairment of secretory pathways by mutant PDYN may lead to glutamate neurotoxicity, which underlies Purkinje cell degeneration and ataxia. PDYN mutations are identified in a small subset of ataxia families, indicating that SCA23 is an infrequent SCA type (~0.5%) in the Netherlands and suggesting further genetic SCA heterogeneity.
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3.
  • Sui, Ping, et al. (författare)
  • Dimethyl-Labeling-Based Protein Quantification and Pathway Search : A Novel Method of Spinal Cord Analysis Applicable for Neurological Studies
  • 2013
  • Ingår i: Journal of Proteome Research. - : American Chemical Society (ACS). - 1535-3893 .- 1535-3907. ; 12:5, s. 2245-2252
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper we describe a simple, fast, and inexpensive approach for quantitative analysis of proteins originated from small central nervous system (CNS) samples, i.e., rat spinal cord. The presented sample preparation protocol and quantification results from isotope dimethyl labeling were statistically evaluated and approved as a reliable and robust method for animal model studies of neurological disorders. Combined with the biopathway analysis tool IPA, the method was applied for comparative analysis of proteins in the dorsal and ventral segments of the rat spinal cord. The results are in agreement with the previously published protein patterns in these tissues. A majority (73%) of proteins identified as “related with CNS development and functions” were found to be overexpressed in the dorsal section compared to the ventral segment. The pathway related to neuropathic pain was overrepresented in the dorsal tissue samples. The developed novel approach may be applied for analyses of the spinal cord mediated neurological dysfunctions and pathological pain.
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4.
  • Sui, Ping, 1985-, et al. (författare)
  • Neuropeptide imaging in rat spinal cord with MALDI-TOF MS : Method development for the application in pain-related disease studies
  • 2017
  • Ingår i: European journal of mass spectrometry. - : SAGE Publications. - 1469-0667 .- 1751-6838. ; 23:3, s. 105-115
  • Tidskriftsartikel (refereegranskat)abstract
    • Spinal cord as a connection between brain and peripheral nervous system is an essential material for studying neural transmission, especially in pain-related research. This study was the first to investigate pain-related neuropeptide distribution in rat spinal cord using a matrix-assisted laser desorption ionization-time of flight imaging mass spectrometry (MALDI TOF MS) approach. The imaging workflow was evaluated and showed that MALDI TOF MS provides efficient resolution and robustness for neuropeptide imaging in rat spinal cord tissue. The imaging result showed that in naive rat spinal cord the molecular distribution of haeme, phosphatidylcholine, substance P and thymosin beta 4 were well in line with histological features. Three groups of pain-related neuropeptides, which are cleaved from prodynorphin, proenkephalin and protachykinin-1 proteins were detected. All these neuropeptides were found predominantly localized in the dorsal spinal cord and each group had unique distribution pattern. This study set the stage for future MALDI TOF MS application to elucidate signalling mechanism of pain-related diseases in small animal models.
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6.
  • Sui, Ping, et al. (författare)
  • Proteomics of Neuropathic Pain : Proteins and Signaling Pathways Affected in a Rat Model
  • 2014
  • Ingår i: Journal of Proteome Research. - : American Chemical Society (ACS). - 1535-3893 .- 1535-3907. ; 13:9, s. 3957-3965
  • Tidskriftsartikel (refereegranskat)abstract
    • The myriad proteins may be involved in the mechanisms underlying the development and maintenance of neuropathic pain, an extremely disabling condition that originates from pathology of the nervous system. To address the mechanisms, we here analyzed proteins and cellular networks in the dorsal spinal cord mediating pain processing in a well-established rat model of neuropathic pain induced by spinal nerve ligation (SNL). Labeling-based proteomic methods together with high-resolution mass spectrometry for proteome analysis were applied. 38 proteins including synapsin 1 and microtubule-associated protein 2 were identified as differently expressed in the SNL group. Pathway analysis suggests that maladaptive changes in the levels of these proteins may contribute to abnormal synaptic transmission and neuronal intracellular signaling underlying the onset and development of neuropathic pain.
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  • Resultat 1-6 av 6

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