Retracted: Effects of Vitamin K2 on Osteoporosis
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J, Takeda T and Sato Y.” has been retracted by the Editorial office of the journal Current Pharmaceutical Design, as the text,
data and some figures used/referred in this review article are from sources which have been retracted or under investigation on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 Some sources that have been retracted are as follows: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/.



Bentham Science apologizes to its readers for any inconvenience this may have caused. The Bentham Editorial Policy on Article. Retraction can be found at https://benthamscience.com/editorial-policies-main.php



It is a condition of publication that manuscripts submitted to this journal have not been published and will not be simultaneously submitted or published elsewhere. Furthermore, any data, illustration, structure or table that has been published elsewhere must be reported, and copyright permission for reproduction must be obtained. Plagiarism is strictly forbidden, and by submitting the article for publication the authors agree that the publishers have the legal right to take appropriate action against the authors, if plagiarism or fabricated information is discovered. By submitting a manuscript, the authors agree that the copyright of their article is transferred to the publishers if and when the article is accepted for publication.
Department of Sports Medicine, Keio University School of Medicine, Tokyo, Japan
Jun
J
Iwamoto
Department of Sports Medicine, Keio University School of Medicine, Tokyo, Japan
Tsuyoshi
T
Takeda
Department of Neurology, Mitate Hospital, Fukuoka, Japan
Yoshihiro
Y
Sato
D000818:Animals; D002118:Calcium / Q000172:deficiency; D002762:Cholecalciferol / Q000627:therapeutic use; D004359:Drug Therapy, Combination; D005260:Female; D006620:Hip Fractures / Q000188:drug therapy; D006801:Humans; D008107:Liver Diseases / Q000150:complications; D008297:Male; D015675:Osteocalcin / Q000378:metabolism; D010024:Osteoporosis / Q000139:chemically induced / Q000188:drug therapy* / Q000209:etiology; D015663:Osteoporosis, Postmenopausal / Q000188:drug therapy; D013026:Space Flight; D024482:Vitamin K 2 / Q000627:therapeutic use*; D014893:Weightlessness / Q000009:adverse effects
D015675:Osteocalcin; D024482:Vitamin K 2; D002762:Cholecalciferol; D002118:Calcium