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Mammalian hibernation as a model of disuse osteoporosis: the effects of physical inactivity on bone metabolism, structure, and strength.

McGee-Lawrence ME, Carey HV, Donahue SW.

Am J Physiol Regul Integr Comp Physiol. 2008 Dec;295(6):R1999-2014. doi: 10.1152/ajpregu.90648.2008. Review.


Parathyroid hormone may maintain bone formation in hibernating black bears (Ursus americanus) to prevent disuse osteoporosis.

Donahue SW, Galley SA, Vaughan MR, Patterson-Buckendahl P, Demers LM, Vance JL, McGee ME.

J Exp Biol. 2006 May;209(Pt 9):1630-8.


Black bears with longer disuse (hibernation) periods have lower femoral osteon population density and greater mineralization and intracortical porosity.

Wojda SJ, Weyland DR, Gray SK, McGee-Lawrence ME, Drummer TD, Donahue SW.

Anat Rec (Hoboken). 2013 Aug;296(8):1148-53. doi: 10.1002/ar.22720.


Suppressed bone remodeling in black bears conserves energy and bone mass during hibernation.

McGee-Lawrence M, Buckendahl P, Carpenter C, Henriksen K, Vaughan M, Donahue S.

J Exp Biol. 2015 Jul;218(Pt 13):2067-74. doi: 10.1242/jeb.120725.


Grizzly bears (Ursus arctos horribilis) and black bears (Ursus americanus) prevent trabecular bone loss during disuse (hibernation).

McGee-Lawrence ME, Wojda SJ, Barlow LN, Drummer TD, Castillo AB, Kennedy O, Condon KW, Auger J, Black HL, Nelson OL, Robbins CT, Donahue SW.

Bone. 2009 Dec;45(6):1186-91. doi: 10.1016/j.bone.2009.08.011.


Hibernating bears as a model for preventing disuse osteoporosis.

Donahue SW, McGee ME, Harvey KB, Vaughan MR, Robbins CT.

J Biomech. 2006;39(8):1480-8.


Bone formation is not impaired by hibernation (disuse) in black bears Ursus americanus.

Donahue SW, Vaughan MR, Demers LM, Donahue HJ.

J Exp Biol. 2003 Dec;206(Pt 23):4233-9.


Investigating the mechanism for maintaining eucalcemia despite immobility and anuria in the hibernating American black bear (Ursus americanus).

Seger RL, Cross RA, Rosen CJ, Causey RC, Gundberg CM, Carpenter TO, Chen TC, Halteman WA, Holick MF, Jakubas WJ, Keisler DH, Seger RM, Servello FA.

Bone. 2011 Dec;49(6):1205-12. doi: 10.1016/j.bone.2011.08.017.


Endocrine regulation of bone and energy metabolism in hibernating mammals.

Doherty AH, Florant GL, Donahue SW.

Integr Comp Biol. 2014 Sep;54(3):463-83. doi: 10.1093/icb/icu001. Review.


The effects of hibernation and forced disuse (neurectomy) on bone properties in arctic ground squirrels.

Bogren LK, Johnston EL, Barati Z, Martin PA, Wojda SJ, Van Tets IG, LeBlanc AD, Donahue SW, Drew KL.

Physiol Rep. 2016 May;4(10). pii: e12771. doi: 10.14814/phy2.12771.


Comparative functional genomics of adaptation to muscular disuse in hibernating mammals.

Fedorov VB, Goropashnaya AV, Stewart NC, Tøien Ø, Chang C, Wang H, Yan J, Showe LC, Showe MK, Barnes BM.

Mol Ecol. 2014 Nov;23(22):5524-37. doi: 10.1111/mec.12963.


Vitamin D status and bone and connective tissue turnover in brown bears (Ursus arctos) during hibernation and the active state.

Vestergaard P, Støen OG, Swenson JE, Mosekilde L, Heickendorff L, Fröbert O.

PLoS One. 2011;6(6):e21483. doi: 10.1371/journal.pone.0021483.


Six months of disuse during hibernation does not increase intracortical porosity or decrease cortical bone geometry, strength, or mineralization in black bear (Ursus americanus) femurs.

McGee-Lawrence ME, Wojda SJ, Barlow LN, Drummer TD, Bunnell K, Auger J, Black HL, Donahue SW.

J Biomech. 2009 Jul 22;42(10):1378-83. doi: 10.1016/j.jbiomech.2008.11.039.


Arctic Ground Squirrels Limit Bone Loss during the Prolonged Physical Inactivity Associated with Hibernation.

Wojda SJ, Gridley RA, McGee-Lawrence ME, Drummer TD, Hess A, Kohl F, Barnes BM, Donahue SW.

Physiol Biochem Zool. 2016 Jan-Feb;89(1):72-80. doi: 10.1086/684619.


Thirteen-lined ground squirrels (Ictidomys tridecemlineatus) show microstructural bone loss during hibernation but preserve bone macrostructural geometry and strength.

McGee-Lawrence ME, Stoll DM, Mantila ER, Fahrner BK, Carey HV, Donahue SW.

J Exp Biol. 2011 Apr 15;214(Pt 8):1240-7. doi: 10.1242/jeb053520.


Yellow-bellied marmots (Marmota flaviventris) preserve bone strength and microstructure during hibernation.

Wojda SJ, McGee-Lawrence ME, Gridley RA, Auger J, Black HL, Donahue SW.

Bone. 2012 Jan;50(1):182-8. doi: 10.1016/j.bone.2011.10.013.


Polar bears (Ursus maritimus), the most evolutionary advanced hibernators, avoid significant bone loss during hibernation.

Lennox AR, Goodship AE.

Comp Biochem Physiol A Mol Integr Physiol. 2008 Feb;149(2):203-8. doi: 10.1016/j.cbpa.2007.11.012.

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