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- Publisher Website: 10.1007/s10495-006-6315-4
- Scopus: eid_2-s2.0-33745018669
- PMID: 16763784
- WOS: WOS:000238154300009
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Article: Deficiency of the Bax gene attenuates denervation-induced apoptosis
Title | Deficiency of the Bax gene attenuates denervation-induced apoptosis |
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Authors | |
Keywords | BCL-2 Apoptosis Neuromuscular disease Muscle atrophy |
Issue Date | 2006 |
Citation | Apoptosis, 2006, v. 11, n. 6, p. 967-981 How to Cite? |
Abstract | Apoptosis has been implicated in mediating denervation-induced muscle wasting. In this study we determined the effect of interference of apoptosis on muscle wasting during denervation by using mice genetically deficient in pro-apoptotic Bax. After denervation, muscle wasting was evident in both wild-type and Bax -/- muscles but reduction of muscle weight was attenuated in Bax -/- mice. Apoptotic DNA fragmentation increased in wild-type denervated muscles whereas there was no statistical increase in DNA fragmentation in denervated muscles from Bax -/- mice. Mitochondrial AIF and Smac/DIABLO releases and Bcl-2, p53 and HSP27 increased whereas XIAP and MnSOD decreased to a similar extent in muscles from wild-type and Bax -/- mice following denervation. Mitochondrial cytochrome c release was elevated in denervated muscles from wild-type mice but the increase was suppressed in muscles from Bax -/- mice. Increases in caspase-3 and -9 activities and oxidative stress markers H 2 O 2 , MDA/4-HAE and nitrotyrosine were all evident in denervated muscles from wild-type mice but these changes were absent in muscles from Bax -/- mice. Moreover, ARC increased exclusively in denervated Bax -/- muscle. Our data indicate that under conditions of denervation, pro-apoptotic signalling is suppressed and muscle wasting is attenuated when the Bax gene is lacking. These findings suggest that interventions targeting apoptosis may be valuable in ameliorating denervation-associated pathologic muscle wasting in certain neuromuscular disorders that involve partial or full denervation. © 2006 Springer Science + Business Media, LLC. |
Persistent Identifier | http://hdl.handle.net/10722/244083 |
ISSN | 2021 Impact Factor: 5.561 2020 SCImago Journal Rankings: 1.318 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Siu, P. M. | - |
dc.contributor.author | Alway, S. E. | - |
dc.date.accessioned | 2017-08-31T08:56:00Z | - |
dc.date.available | 2017-08-31T08:56:00Z | - |
dc.date.issued | 2006 | - |
dc.identifier.citation | Apoptosis, 2006, v. 11, n. 6, p. 967-981 | - |
dc.identifier.issn | 1360-8185 | - |
dc.identifier.uri | http://hdl.handle.net/10722/244083 | - |
dc.description.abstract | Apoptosis has been implicated in mediating denervation-induced muscle wasting. In this study we determined the effect of interference of apoptosis on muscle wasting during denervation by using mice genetically deficient in pro-apoptotic Bax. After denervation, muscle wasting was evident in both wild-type and Bax -/- muscles but reduction of muscle weight was attenuated in Bax -/- mice. Apoptotic DNA fragmentation increased in wild-type denervated muscles whereas there was no statistical increase in DNA fragmentation in denervated muscles from Bax -/- mice. Mitochondrial AIF and Smac/DIABLO releases and Bcl-2, p53 and HSP27 increased whereas XIAP and MnSOD decreased to a similar extent in muscles from wild-type and Bax -/- mice following denervation. Mitochondrial cytochrome c release was elevated in denervated muscles from wild-type mice but the increase was suppressed in muscles from Bax -/- mice. Increases in caspase-3 and -9 activities and oxidative stress markers H 2 O 2 , MDA/4-HAE and nitrotyrosine were all evident in denervated muscles from wild-type mice but these changes were absent in muscles from Bax -/- mice. Moreover, ARC increased exclusively in denervated Bax -/- muscle. Our data indicate that under conditions of denervation, pro-apoptotic signalling is suppressed and muscle wasting is attenuated when the Bax gene is lacking. These findings suggest that interventions targeting apoptosis may be valuable in ameliorating denervation-associated pathologic muscle wasting in certain neuromuscular disorders that involve partial or full denervation. © 2006 Springer Science + Business Media, LLC. | - |
dc.language | eng | - |
dc.relation.ispartof | Apoptosis | - |
dc.subject | BCL-2 | - |
dc.subject | Apoptosis | - |
dc.subject | Neuromuscular disease | - |
dc.subject | Muscle atrophy | - |
dc.title | Deficiency of the Bax gene attenuates denervation-induced apoptosis | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1007/s10495-006-6315-4 | - |
dc.identifier.pmid | 16763784 | - |
dc.identifier.scopus | eid_2-s2.0-33745018669 | - |
dc.identifier.volume | 11 | - |
dc.identifier.issue | 6 | - |
dc.identifier.spage | 967 | - |
dc.identifier.epage | 981 | - |
dc.identifier.eissn | 1573-675X | - |
dc.identifier.isi | WOS:000238154300009 | - |
dc.identifier.issnl | 1360-8185 | - |