Osteoclasts Lacking Rac2 Have Defective Chemotaxis and Resorptive Activity
Itokowa T, Zhu ML, Troiano N, Bian J, Kawano T, Insogna K. Osteoclasts Lacking Rac2 Have Defective Chemotaxis and Resorptive Activity. Calcified Tissue International 2010, 88: 75-86. PMID: 21110188, PMCID: PMC3155765, DOI: 10.1007/s00223-010-9435-3.Peer-Reviewed Original ResearchConceptsTrabecular bone massBone massMature osteoclastsFemoral cortical thicknessTotal bone areaNumber of osteoclastsWild-type miceNormal tooth eruptionNumber of osteoblastsWild-type animalsBone resorptionCortical porosityActin ring formationCortical thicknessTooth eruptionOsteoclast functionResorptive activityDefective chemotaxisBone areaFemale animalsMiceOsteoclastsMigratory rateNormal sizeSignificant differencesTargeted overexpression of Dkk1 in osteoblasts reduces bone mass but does not impair the anabolic response to intermittent PTH treatment in mice
Yao GQ, Wu JJ, Troiano N, Insogna K. Targeted overexpression of Dkk1 in osteoblasts reduces bone mass but does not impair the anabolic response to intermittent PTH treatment in mice. Journal Of Bone And Mineral Metabolism 2010, 29: 141-148. PMID: 20602130, PMCID: PMC3457021, DOI: 10.1007/s00774-010-0202-3.Peer-Reviewed Original ResearchConceptsParathyroid hormonePTH treatmentBone massTg miceAnabolic responseDKK1 expressionSingle daily subcutaneous doseDaily subcutaneous doseBone formationIntermittent PTH treatmentPotent anabolic agentOverexpression of DKK1Number of osteoblastsSubcutaneous doseWT miceReal-time PCRSkeletal sitesDickkopf-1Anabolic agentsBody weightTransgenic miceHistomorphometric parametersHistomorphometric analysisTargeted overexpressionPrimary murine osteoblasts