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국회도서관 홈으로 정보검색 소장정보 검색

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Single-channel recordings of TASK-1 and TASK-3, members of two-pore domain K+ channel family, have not yet been reported in dorsal root ganglion (DRG) neurons, even though their mRNA and activity in whole-cell currents have been detected in these neurons. Here, we report single-channel kinetics of the TASK-3-like K+ channel in DRG neurons and up-regulation of TASK-3 mRNA expression in tissues isolated from animals with spinal cord injury (SCI). In DRG neurons, the single-channel conductance of TASK-3-like K+ channel was 33.0±0.1 pS at ?60 mV, and TASK-3 activity fell by 65±5% when the extracellular pH was changed from 7.3 to 6.3, indicating that the DRG K+ channel is similar to cloned TASK-3 channel. TASK-3 mRNA and protein levels in brain, spinal cord, and DRG were significantly higher in injured animals than in sham-operated ones. These results indicate that TASK-3 channels are expressed and functional in DRG neurons and the expression level is up-regulated following SCI, and suggest that TASK-3 channel could act as a potential background K+ channel under SCI-induced acidic condition.

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참고문헌 (19건) : 자료제공( 네이버학술정보 )

참고문헌 목록에 대한 테이블로 번호, 참고문헌, 국회도서관 소장유무로 구성되어 있습니다.
번호 참고문헌 국회도서관 소장유무
1 A sensitive and reliable locomotor rating scale for open field testing in rats. 네이버 미소장
2 Effects of multi-dose methylprednisolone sodium succinate administration on injured cat spinal cord neurofilament degradation and energy metabolism. 네이버 미소장
3 Cooper BY, Johnson RD, Rau KK. Characterization and function of TWIK-related acid sensing K+ channels in a rat nociceptive cell. Neuroscience 129: 209−224, 2004 미소장
4 Effects of Methylprednisolone on Extracellular Lactic Acidosis and Amino Acids After Severe Compression Injury of Rat Spinal Cord 네이버 미소장
5 Acid-sensitive ion channels in gastrointestinal function 네이버 미소장
6 Thermosensitivity of the two-pore domain K+ channels TREK-2 and TRAAK. 네이버 미소장
7 Functional expression of TASK-1/TASK-3 heteromers in cerebellar granule cells. 네이버 미소장
8 Single-channel properties and pH sensitivity of two-pore domain K + channels of the TALK family 네이버 미소장
9 Kang D, Kim D. TREK-2 (K2P10.1) and TRESK (K2P18.1) are major background K+ channels in dorsal root ganglion neurons. Am J Physiol Cell Physiol 291: C138−146, 2006 미소장
10 Functional expression of TRESK-2, a new member of the tandem-pore K+ channel family. 네이버 미소장
11 Fatty acid-sensitive two-pore domain K + channels 네이버 미소장
12 A novel acid-sensitive K + channel in rat dorsal root ganglia neurons 네이버 미소장
13 Repair of the descending thoracic aorta: impact of open distal anastomosis technique on spinal cord perfusion, neurological outcome and spinal cord histopathology 네이버 미소장
14 Distribution analysis of human two pore domain potassium channels in tissues of the central nervous system and periphery 네이버 미소장
15 Capsaicin activates a nonselective cation channel in cultured neonatal rat dorsal root ganglion neurons. 네이버 미소장
16 Expression of TWIK-related acid sensitive K + channels in capsaicin sensitive and insensitive cells of rat dorsal root ganglia 네이버 미소장
17 Multiple sodium channels and their roles in electrogenesis within dorsal root ganglion neurons. 네이버 미소장
18 Pharmacological characterization of ionic currents that regulate high-frequency spontaneous activity of electromotor neurons in the weakly electric fish, Apteronotus leptorhynchus. 네이버 미소장
19 Modulation of action potential firing by iberiotoxin and NS1619 in rat dorsal root ganglion neurons 네이버 미소장