2019
Cathepsin K-deficient osteocytes prevent lactation-induced bone loss and parathyroid hormone suppression
Lotinun S, Ishihara Y, Nagano K, Kiviranta R, Carpentier VT, Neff L, Parkman V, Ide N, Hu D, Dann P, Brooks D, Bouxsein ML, Wysolmerski J, Gori F, Baron R. Cathepsin K-deficient osteocytes prevent lactation-induced bone loss and parathyroid hormone suppression. Journal Of Clinical Investigation 2019, 129: 3058-3071. PMID: 31112135, PMCID: PMC6668688, DOI: 10.1172/jci122936.Peer-Reviewed Original ResearchConceptsLactation-induced bone lossParathyroid hormoneBone lossBone resorptionCathepsin KMilk calcium levelsParathyroid hormone suppressionSerum parathyroid hormoneRegulation of PTHOsteoclastic bone resorptionTrabecular bone volumeOsteocyte lacunar areaHormone suppressionHigh calcium demandOsteoclast numberCortical thicknessEffect of lactationCalcium levelsNormal rangeBone volumeCalcium demandExact mechanismLacunar areaResorptionSufficient calcium
2005
Continuous PTH and PTHrP Infusion Causes Suppression of Bone Formation and Discordant Effects on 1,25(OH)2Vitamin D
Horwitz MJ, Tedesco MB, Sereika SM, Syed MA, Garcia‐Ocaña A, Bisello A, Hollis BW, Rosen CJ, Wysolmerski JJ, Dann P, Gundberg C, Stewart AF. Continuous PTH and PTHrP Infusion Causes Suppression of Bone Formation and Discordant Effects on 1,25(OH)2Vitamin D. Journal Of Bone And Mineral Research 2005, 20: 1792-1803. PMID: 16160737, DOI: 10.1359/jbmr.050602.Peer-Reviewed Original ResearchConceptsContinuous infusionVitamin DBone formationPhosphorus handlingRenal calciumIGF-1Anabolic skeletal responseDoses of PTHVitamin D homeostasisVitamin D metabolismPlasma IGF-1Vitamin D productionVitamin D synthesisOsteoblastic bone formationHealthy young adultsRenal PTH receptorsContinuous PTHCalcemic responseD homeostasisPrimary hyperparathyroidismHumoral hypercalcemiaSerum calciumD metabolismBone turnoverBone resorption