Evidence map›Paper›PMID 22792258›Full record

ArticlePloS one2012

Calcitonin inhibits SDCP-induced osteoclast apoptosis and increases its efficacy in a rat model of osteoporosis.

Yi-Jie Kuo, Fon-Yih Tsuang, Jui-Sheng Sun, Chi-Hung Lin, Chia-Hsien Chen, Jia-Ying Li, Yi-Chian Huang, Wei-Yu Chen, Chin-Bin Yeh, Jia-Fwu Shyu

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
0.9field-weighted citation impact, top 26% 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

16 citing papers in PubMed, 26 citations in OpenAlex.

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  10. Calcitonin alleviates hyperalgesia in osteoporotic rats by modulating serotonin transporter activity.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2016
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  14. Preventive effects of collagen Peptide from deer sinew on bone loss in ovariectomized rats.Evidence-based complementary and alternative medicine : eCAM · 2014
    Article
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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

10 authors at 6 institutions in 2 countries.

Yi-Jie KuoDepartment of Orthopaedic, Taipei Medical University Hospital, Taipei, Taiwan, Republic of China.
Fon-Yih Tsuang
Jui-Sheng Sun
Chi-Hung Lin
Chia-Hsien Chen
Jia-Ying Li
Yi-Chian Huang
Wei-Yu Chen
Chin-Bin Yeh
Jia-Fwu Shyu
National Defense Medical Center · TWNational Taiwan University Hospital · TWNational Yang Ming Chiao Tung University · TWTri-Service General Hospital · TWBeijing Chao-Yang Hospital · CNTaipei Medical University Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionTreatment for osteoporosis commonly includes the use of bisphosphonates. Serious side effects of these drugs are caused by the inhibition of bone resorption as a result of osteoclast apoptosis. Treatment using calcitonin along with bisphosphonates overcomes these side-effects in some patients. Calcitonin is known to inhibit bone resorption without reducing the number of osteoclasts and is thought to prolong osteoclast survival through the inhibition of apoptosis. Further understanding of how calcitonin inhibits apoptosis could prove useful to the development of alternative treatment regimens for osteoporosis. This study aimed to analyze the mechanism by which calcitonin influences osteoclast apoptosis induced by a bisphosphate analog, sintered dicalcium pyrophosphate (SDCP), and to determine the effects of co-treatment with calcitonin and SDCP on apoptotic signaling in osteoclasts.

methodsIsolated osteoclasts were treated with CT, SDCP or both for 48 h. Osteoclast apoptosis assays, pit formation assays, and tartrate-resistant acid phosphatase (TRAP) staining were performed. Using an osteoporosis rat model, ovariectomized (OVX) rats received calcitonin, SDCP, or calcitonin + SDCP. The microarchitecture of the fifth lumbar trabecular bone was investigated, and histomorphometric and biochemical analyses were performed.

resultsCalcitonin inhibited SDCP-induced apoptosis in primary osteoclast cultures, increased Bcl-2 and Erk activity, and decreased Mcl-1 activity. Calcitonin prevented decreased osteoclast survival but not resorption induced by SDCP. Histomorphometric analysis of the tibia revealed increased bone formation, and microcomputed tomography of the fifth lumbar vertebrate showed an additive effect of calcitonin and SDCP on bone volume. Finally, analysis of the serum bone markers CTX-I and P1NP suggests that the increased bone volume induced by co-treatment with calcitonin and SDCP may be due to decreased bone resorption and increased bone formation.

conclusionsCalcitonin reduces SDCP-induced osteoclast apoptosis and increases its efficacy in an in vivo model of osteoporosis.

Indexed as

AnimalsApoptosisBone Density Conservation AgentsCalcitoninCalcium PyrophosphateCaspase 3Cells, CulturedCell SurvivalDisease Models, AnimalExtracellular Signal-Regulated MAP KinasesFemaleLumbar VertebraeMAP Kinase Signaling SystemOsteoclastsOsteoporosisProto-Oncogene Proteins c-bcl-2Bone Density Conservation AgentsCalcitoninCalcium PyrophosphateCasp3 protein, ratCaspase 3Extracellular Signal-Regulated MAP KinasesProto-Oncogene Proteins c-bcl-2sintered beta-dicalcium pyrophosphate

Identifiers

PMID22792258
PMCPMC3391248
OpenAlexW2047556851

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LicenceCC BY
Read underepoch 390

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.