Evidence map›Paper›PMID 24722767›Full record

ArticleOsteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA2014

Effects of sequential osteoporosis treatments on trabecular bone in adult rats with low bone mass.

S K Amugongo, W Yao, J Jia, Y-A E Lay, W Dai, L Jiang, D Walsh, C-S Li, N K N Dave, D Olivera and 3 more

Open access · greenAbstract read
In one paragraph

Article in Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.3field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
  2. Article
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  5. Article
  6. Intermittent Parathyroid Hormone After Prolonged Alendronate Treatment Induces Substantial New Bone Formation and Increases Bone Tissue Heterogeneity in Ovariectomized Rats.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2017
    Article
  7. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 4 institutions in 1 country.

S K AmugongoCenter for Musculoskeletal Health and Department of Medicine, University of California Davis Medical Center, 4625 2nd Avenue, Suite 1002, Sacramento, CA, 95817, USA.
W Yao
J Jia
Y-A E Lay
W Dai
L Jiang
D Walsh
C-S Li
N K N Dave
D Olivera
B Panganiban
R O Ritchie
N E Lane
University of California Davis Medical Center · USLawrence Berkeley National Laboratory · USUniversity of California, Berkeley · USUniversity of California, Davis · US

Funding

UC DAVIS CLINICAL AND TRANSLATIONAL SCIENCE CENTER: BPCAUL1RR024146 · NCRR · UNIVERSITY OF CALIFORNIA AT DAVIS · PI BERGLUND, LARS F · 2006 to 2011
$27.0M
Building Interdisciplinary Research Careers in Womens Health at UC Davis - Administrative SupplementK12HD051958 · NICHD · UNIVERSITY OF CALIFORNIA DAVIS · PI LANE, NANCY E · 2005 to 2023
$9.6M
Complex Nanocomposites for Bone RegenerationR01DE015633 · NIDCR · UNIVERSITY OF CALIF-LAWRENC BERKELEY LAB · PI TOMSIA, ANTONI P · 2003 to 2013
$9.2M
3D IN VIVO MORPHOMETRY OF TRABECULAR MICROSTRUCTURER01AR043052 · NIAMS · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI LANE, NANCY E · 1995 to 2014
$5.0M
Midcareer Investigator Award Patient-Oriented ResearchK24AR048841 · NIAMS · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI LANE, NANCY E · 2002 to 2013
$1.4M
Directing mesenchymal stem cells to bone to augment bone formationR01AR061366 · NIAMS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI YAO, WEI · 2012 to 2015
$1.1M
NCRR NIH HHS UL1 RR024146NIAMS NIH HHS 5K24AR048841-09NIAMS NIH HHS K24 AR048841NIAMS NIH HHS R01 AR043052NIAMS NIH HHS R01 AR061366NICHD NIH HHS 1K12HD05195801NICHD NIH HHS K12 HD051958NIDCR NIH HHS 5R01 DE015633NIDCR NIH HHS R01 DE015633
6 · The paper itself

Abstract

unlabelledWe used an osteopenic adult ovariectomized (OVX) rat model to evaluate various sequential treatments for osteoporosis, using FDA-approved agents with complementary tissue-level mechanisms of action. Sequential treatment for 3 months each with alendronate (Aln), followed by PTH, followed by resumption of Aln, created the highest trabecular bone mass, best microarchitecture, and highest bone strength.

introductionIndividual agents used to treat human osteoporosis reduce fracture risk by ∼ 50-60%. As agents that act with complementary mechanisms are available, sequential therapies that mix antiresorptive and anabolic agents could improve fracture risk reduction, when compared with monotherapies.

methodsWe evaluated bone mass, bone microarchitecture, and bone strength in adult OVX, osteopenic rats, during different sequences of vehicle (Veh), parathyroid hormone (PTH), Aln, or raloxifene (Ral) in three 90-day treatment periods, over 9 months. Differences among groups were evaluated. The interrelationships of bone mass and microarchitecture endpoints and their relationship to bone strength were studied.

resultsEstrogen deficiency caused bone loss. OVX rats treated with Aln monotherapy had significantly better bone mass, microarchitecture, and bone strength than untreated OVX rats. Rats treated with an Aln drug holiday had bone mass and microarchitecture similar to the Aln monotherapy group but with significantly lower bone strength. PTH-treated rats had markedly higher bone endpoints, but all were lost after PTH withdrawal without follow-up treatment. Rats treated with PTH followed by Aln had better bone endpoints than those treated with Aln monotherapy, PTH monotherapy, or an Aln holiday. Rats treated initially with Aln or Ral, then switched to PTH, also had better bone endpoints, than monotherapy treatment. Rats treated with Aln, then PTH, and returned to Aln had the highest values for all endpoints.

conclusionOur data indicate that antiresorptive therapy can be coupled with an anabolic agent, to produce and maintain better bone mass, microarchitecture, and strength than can be achieved with any monotherapy.

Indexed as

AlendronateAnimalsBone DensityBone Density Conservation AgentsDisease Models, AnimalDrug Evaluation, PreclinicalDrug Therapy, CombinationFemaleFemurHormone Replacement TherapyLumbar VertebraeOsteoporosisOsteoporotic FracturesOvariectomyParathyroid HormoneRaloxifene HydrochlorideAlendronateBone Density Conservation AgentsParathyroid HormoneRaloxifene Hydrochloride

Identifiers

PMID24722767
PMCPMC4394748
OpenAlexW2151141151

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.