Evidence map›Paper›PMID 31494773›Full record

ArticleJournal of bone and mineral metabolism2020

Role of irisin in androgen-deficient muscle wasting and osteopenia in mice.

Shunki Iemura, Naoyuki Kawao, Katsumi Okumoto, Masao Akagi, Hiroshi Kaji

Abstract read
PubMed Publisher
In one paragraph

Article in Journal of bone and mineral metabolism, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
2.5field-weighted citation impact, top 10% 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

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 35 citations in OpenAlex.

  1. Protective role of irisin on bone in osteoporosis: a systematic review of rodent studies.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2025
    Pooled it
  2. Pooled it
  3. Review
  4. Bone-muscle interactions.Osteoporosis and sarcopenia · 2025
    Review
  5. Article
  6. Review
  7. Crosstalk between muscle and bone.Journal of bone and mineral metabolism · 2024
    Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Role of irisin in bone diseases.Frontiers in endocrinology · 2023
    Review
  14. Article
  15. Review
  16. Irisin improves delayed bone repair in diabetic female mice.Journal of bone and mineral metabolism · 2022
    Article
  17. Review
  18. Article
  19. Review
  20. Article
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

5 authors at 1 institution in 1 country.

Shunki IemuraDepartment of Orthopaedic Surgery, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan.
Naoyuki KawaoDepartment of Physiology and Regenerative Medicine, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan.
Katsumi OkumotoLife Science Research Institute, Kindai University, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan.
Masao AkagiDepartment of Orthopaedic Surgery, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan.
Hiroshi KajiDepartment of Physiology and Regenerative Medicine, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan. hkaji@med.kindai.ac.jp.ORCID http://orcid.org/0000-0001-7433-5135
Kindai University · JP

Funding

Ministry of Education, Culture, Sports, Science and Technology 15H05935Ministry of Education, Culture, Sports, Science and Technology C:15K08220Ministry of Education, Culture, Sports, Science and Technology C:16K08534
6 · The paper itself

Abstract

Androgen deficiency plays a crucial role in the pathogenesis of male osteoporosis and sarcopenia. Myokines have recently been identified as humoral factors that are involved in the interactions between muscle and bone; however, the influence of androgen deficiency on these interactions remains unclear. Therefore, we herein investigated the roles of humoral factors linking muscle to bone using orchidectomized mice with sarcopenia and osteopenia. Orchidectomy (ORX) significantly reduced muscle mass, grip strength, and trabecular bone mineral density (BMD) in mice. Among the myokines examined, ORX only significantly reduced fibronectin type III domain-containing 5 (Fndc5) mRNA levels in both the soleus and gastrocnemius muscles of mice. In simple regression analyses, Fndc5 mRNA levels in the soleus muscle positively correlated with trabecular BMD, but not cortical BMD. The administration of irisin, a product of Fndc5, significantly protected against the decrease induced in trabecular BMD, but not muscle mass, by androgen deficiency in mice. In conclusion, the present results demonstrated that androgen deficiency decreases the expression of irisin in the skeletal muscle of mice. Irisin may be involved in muscle/bone relationships negatively affected by androgen deficiency.

Indexed as

AndrogensAnimalsBone and BonesBone DensityBone Diseases, MetabolicBone ResorptionFemaleFibronectinsGene Expression RegulationMaleMice, Inbred C57BLMuscle, SkeletalMuscular AtrophyOrchiectomyOsteogenesisOvariectomyAndrogensFibronectinsFNDC5 protein, mouseRNA, MessengerAndrogen deficiencyIrisinMuscle wastingOsteopenia

Identifiers

PMID31494773
OpenAlexW2971809847

What OpenQuestion holds

Textmetadata
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.