Title: Retracted: Effects of Vitamin K2 on Osteoporosis
Volume: 10
Issue: 21
Author(s): Jun Iwamoto*, Tsuyoshi Takeda and Yoshihiro Sato
Affiliation:
- Department of Sports Medicine, Keio University School of Medicine, Tokyo,Japan
Abstract: The article entitled “Effects of Vitamin K2 on Osteoporosis, published in Curr Pharm Des 2004; 10(21): 2557-76, by Iwamoto
J, Takeda T and Sato Y.” has been retracted by the Editorial office of the journal Current Pharmaceutical Design, as the text,
data and some figures used/referred in this review article are from sources which have been retracted or under investigation on
the basis of data fabrication and falsification, authorship misconduct, duplicate publication, unethical research practices, text
recycling/self-plagiarism, and unresolved concerns about data integrity and research conduct. The authors were informed of
this complaint and were requested to give justification on the matter in their defense. However, no reply was received from
their side in this regard. Some sources that have been retracted are as follows:
1. Iwamoto J, Takeda T, Ichimura S. Combined treatment with vitamin K2 and bisphosphonate in postmenopausal women with osteoporosis.
Yonsei Med J 2003; 44: 751-6. Available at: https://eymj.org/DOIx.php?id=10.3349/ymj.2019.60.1.115.
2. Sato Y, Honda Y, Kuno H, Oizumi K. Menatetrenone ameliorates osteopenia in disuse-affected limbs of vitamin D- and K-deficient
stroke patients. Bone 1998; 23: 291-6. Available at: https://www.sciencedirect.com/science/article/pii/S8756328298001082.
3. Sato Y, Honda Y, Kaji M, Asoh T, Hosokawa K, Kondo I, et al. Amelioration of osteoporosis by menatetrenone in elderly female
Parkinson's disease patients with vitamin D deficiency. Bone 2002; 31: 114-8. Available at: https://pubmed.ncbi.nlm.nih.gov/
12110423/.
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Retraction can be found at https://benthamscience.com/editorial-policies-main.php
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