title: Insights into the regulation of muscle metabolism and growth in mice and hibernating grizzly bears creator: Mugahid (Megahed), Douaa (Doaa) subject: ddc-500 subject: 500 Natural sciences and mathematics subject: ddc-570 subject: 570 Life sciences description: Mechanotransduction plays an important role in the regulation of muscle growth and metabolic signalling in striated muscle. Muscle disuse reduces mechanical input to the muscle, which results in a loss of muscle mass. Here I describe how titin's mechanically activated kinase domain affects muscle growth and metabolism via p62 and Akt signalling. I also demonstrate how changes in metabolic and growth signalling in hibernating grizzly bear help maintain muscle mass under conditions that induce muscle loss in humans and mice. I validated some of these changes in murine myotubes demonstrating that increasing non-essential amino acid levels, increasing Pdk4 levels or suppressing Serpinf1 has a positive effect on growth signalling that extends to non-hibernators. date: 2015 type: Dissertation type: info:eu-repo/semantics/doctoralThesis type: NonPeerReviewed format: application/pdf identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/19027/1/step2.pdf identifier: DOI:10.11588/heidok.00019027 identifier: urn:nbn:de:bsz:16-heidok-190276 identifier: Mugahid (Megahed), Douaa (Doaa) (2015) Insights into the regulation of muscle metabolism and growth in mice and hibernating grizzly bears. [Dissertation] relation: https://archiv.ub.uni-heidelberg.de/volltextserver/19027/ rights: info:eu-repo/semantics/openAccess rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html language: eng