Cited by 114Bone Metabolism and DiseasesBone health and osteoporosis researchParathyroid Disorders and Treatments

Control of Bone Anabolism in Response to Mechanical Loading and PTH by Distinct Mechanisms Downstream of the PTH Receptor

Open access
Delgado-Calle, Jesus, Tu, Xiaolin, Pacheco-Costa, Rafael, McAndrews, Kevin, Edwards, Rachel, Pellegrini, Gretel G, Kuhlenschmidt, Kali, Olivos, Naomie +4 more·2017·Journal of Bone and Mineral Research

Abstract

Osteocytes integrate the responses of bone to mechanical and hormonal stimuli by poorly understood mechanisms. We report here that mice with conditional deletion of the parathyroid hormone (PTH) receptor 1 (Pth1r) in dentin matrix protein 1 (DMP1)-8kb–expressing cells (cKO) exhibit a modest decrease in bone resorption leading to a mild increase in cancellous bone without changes in cortical bone. However, bone resorption in response to endogenous chronic elevation of PTH in growing or adult cKO mice induced by a low calcium diet remained intact, because the increased bone remodeling and bone loss was indistinguishable from that exhibited by control littermates. In contrast, the bone gain and increased bone formation in cancellous and cortical bone induced by daily injections of PTH and the periosteal bone apposition induced by axial ulna loading were markedly reduced in cKO mice compared to controls. Remarkably, however, wild-type (WT) control littermates and transgenic mice overexpressing SOST injected daily with PTH exhibit similar activation of Wnt/β-catenin signaling, increased bone formation, and cancellous and cortical bone gain. Taken together, these findings demonstrate that Pth1r in DMP1-8kb–expressing cells is required to maintain basal levels of bone resorption but is dispensable for the catabolic action of chronic PTH elevation; and it is essential for the anabolic actions of daily PTH injections and mechanical loading. However, downregulation of Sost/sclerostin, previously shown to be required for bone anabolism induced by mechanical loading, is not required for PTH-induced bone gain, showing that other mechanisms downstream of the Pth1r in DMP1-8kb–expressing cells are responsible for the hormonal effect. © 2016 American Society for Bone and Mineral Research.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1002/jbmr.3011

Cites

53 of 53 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. [32]Tu X, Edwards R, Olivos N, Conditional deletion of the parathyroid hormone (PTH) receptor 1 from osteocytes results in decreased bone resorption and a progressive increase in cancellous bone mass. J Bone Miner Res. 2011; 26: S16.
  2. [33]Tu X, Pellegrini G, Galli C, PTH receptor 1 expression in osteocytes is indispensable for the anabolic effect of mechanical loading in mice. J Bone Miner Res. 2011; 26: S24.

Cited by

Sorted by citations

Authors
Delgado-Calle, J., Tu, X., Pacheco-Costa, R., McAndrews, K., Edwards, R., Pellegrini, G. G., Kuhlenschmidt, K., Olivos, N., Robling, A., Peacock, M., Plotkin, L. I., & Bellido, T.
Affiliations
  • Roudebush Veterans Administration Medical CenterIndianapolisINUSA
  • Indiana University Indianapolis (US)
  • Department of Anatomy and Cell BiologySchool of MedicineIndiana UniversityIndianapolisINUSA
  • Richard L. Roudebush VA Medical Center (US)
Corresponding author
Bellido, Teresita
Venue
Journal of Bone and Mineral Research
Published
2016-10-05
Volume
32
Issue
3
Pages
522-535
ISSN
  • 0884-0431 (ISSN-L)
  • 1523-4681
OpenAlex
W2528107193
Cited by
114
References
53
Citations by year
2026: 10 · 2025: 6 · 2024: 8 · 2023: 7 · 2022: 9 · 2021: 9 · 2020: 20 · 2019: 18 · 2018: 10 · 2017: 14 · 2016: 2
FWCI
7.62
Type
journal article
Language
en
Open access
Locations
  • Journal of Bone and Mineral Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • IUScholarWorks (Indiana University) (submittedVersion)
Funders
  • National Institutes of Health (NIH)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases [NIAMS] (R01-AR059357)
  • National Heart, Lung, and Blood Institute [NHLBI] (T35 HL110854-01)
  • Veterans Administration (1 I01 BX002104-01)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
  • Health Sciences › Medicine › Nephrology › Parathyroid Disorders and Treatments
Keywords
parathyroid hormone type 1 receptor, PTH1R, osteocytes, bone formation, bone resorption, mechanical loading, sclerostin, Wnt/β-catenin signaling, bone remodeling, low calcium diet, cortical bone, trabecular bone
MeSH terms
Fibroblast Growth Factor-23, Animals, Bone and Bones, Bone Resorption, Glycoproteins, Mice, Inbred C57BL, Models, Biological, Organ Size, Osteocytes, Parathyroid Hormone, Signal Transduction, Down-Regulation, Extracellular Matrix Proteins, Weight-Bearing, Bone Remodeling, Gene Deletion, Mice, Knockout, Intercellular Signaling Peptides and Proteins, Receptor, Parathyroid Hormone, Type 1, Adaptor Proteins, Signal Transducing

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review