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Title Author(s) Journal Nature Retracted Citations Actions
Vitamin K2 improves femoral bone strength without altering bone mineral density…
Biology - Cellular Toxicology +1
Jun Iwamoto, Yoshihiro Sato et al.
Journal of Nutritional Science and…
Center for Academic Publ…
Retraction Jun 30, 2019
4
Effects of Vitamin K-2 Administration on Calcium Balance and Bone Mass in Young…
Biochemistry Biology - Cellular +2
Jun Iwamoto, James K Yeh et al.
Hormone Research in Paediatrics
Karger
Retraction May 24, 2019
5
Effects of Vitamin D Supplementation on Calcium Balance and Bone Growth in Youn…
Biology - Cellular Nutrition +2
Jun Iwamoto, James K Yeh et al.
Hormone Research in Paediatrics
Karger
Retraction May 24, 2019
11
Effects of combined administration of alfacalcidol and risedronate on cancellou…
Biology - Cellular Toxicology +1
Jun Iwamoto, Azusa Seki et al.
Chinese Journal of Physiology
Wolters Kluwer - Medknow
Retraction Apr 25, 2019
0
Beneficial effect of pretreatment and treatment continuation with risedronate a…
Biochemistry Toxicology +2
Jun Iwamoto, Tsuyoshi Takeda et al.
Journal of Nutritional Science and…
Center for Academic Publ…
Retraction Feb 28, 2019
3
Effects of alfacalcidol on cancellous and cortical bone mass in rats treated wi…
Biochemistry Toxicology +1
Jun Iwamoto, Azusa Seki et al.
Journal of Nutritional Science and…
Center for Academic Publ…
Retraction Feb 28, 2019
9
Comparative therapeutic effects of alendronate and alfacalcidol on cancellous a…
Biochemistry Toxicology +2
Jun Iwamoto, Azusa Seki et al.
Journal of Nutritional Science and…
Center for Academic Publ…
Retraction Feb 28, 2019
9
Effect of risedronate on the cortical and cancellous bone mass and mechanical p…
Biochemistry Toxicology +2
Jun Iwamoto, Azusa Seki et al.
Journal of Nutritional Science and…
Center for Academic Publ…
Retraction Feb 28, 2019
10
Comparative effects of vitamin K and vitamin D supplementation on calcium balan…
Biochemistry Nutrition +1
Jun Iwamoto, James K Yeh et al.
Journal of Nutritional Science and…
Center for Academic Publ…
Retraction Feb 28, 2019
1
Vitamin K Deficiency and Osteopenia in Elderly Women With Alzheimer's Disease
Medicine - Geriatric Medicine - Neurology +2
Yoshihiro Sato, Yoshiaki Honda et al.
Archives of Physical Medicine and …
Elsevier
Retraction Feb 19, 2019
51
Comparison of Effect of Treatment with Etidronate and Alendronate on Lumbar Bon…
Medicine - Geriatric Medicine - Orthoped… +2
Jun Iwamoto, Tsuyoshi Takeda et al.
Yonsei Medical Journal
Yonsei University Colleg…
Retraction Dec 13, 2018
13
Abnormal bone and calcium metabolism in immobilized Parkinson's disease patients
Biochemistry Medicine - Neurology +1
Yoshihiro Sato, Yoshiaki Honda et al.
Movement Disorders
Wiley
Retraction Dec 13, 2018
68
Differential Effect of Vitamin K and Vitamin D Supplementation on Bone Mass in …
Biochemistry Biology - Cellular +2
Jun Iwamoto, Tsuyoshi Takeda et al.
Yonsei Medical Journal
Yonsei University Colleg…
Retraction Dec 13, 2018
6
Combined treatment with vitamin k2 and bisphosphonate in postmenopausal women w…
Medicine - Geriatric Medicine - Orthoped… +1
Jun Iwamoto, Tsuyoshi Takeda et al.
Yonsei Medical Journal
Yonsei University Colleg…
Retraction Dec 13, 2018
22
Homocysteine as a predictive factor for hip fracture in stroke patients
Biochemistry Medicine - Neurology +1
Yoshihiro Sato, Yoshiaki Honda et al.
Bone
Elsevier
Retraction Sep 18, 2018
28
Abnormal calcium homeostasis in disabled stroke patients with low 25-hydroxyvit…
Biochemistry Toxicology +1
Yoshihiro Sato, Masahide Kaji et al.
Bone
Elsevier
Retraction Sep 18, 2018
15
Negative myoglobin staining in hemiplegic muscle of acute stroke patients predi…
Anatomy/Physiology Biochemistry +2
Yoshihiro Sato, Jun Iwamoto et al.
American Journal of Physical Medic…
Wolters Kluwer
Retraction Aug 30, 2018
5
Therapeutic effect of risedronate on cancellous and cortical bone in ovariectom…
Biochemistry Biology - Cellular +3
Jun Iwamoto, Azusa Seki et al.
Experimental Animals
Japanese Association for…
Retraction Jul 30, 2018
3
Effect of pre- and post-surgery treatment with risedronate on trabecular bone l…
Biochemistry Biology - Cellular +3
Jun Iwamoto, Tsuyoshi Takeda et al.
Experimental Animals
Japanese Association for…
Retraction Jul 30, 2018
2
Comparative effects of alendronate and alfacalcidol on cancellous and cortical …
Biochemistry Biology - Cellular +3
Jun Iwamoto, Azusa Seki et al.
Experimental Animals
Japanese Association for…
Retraction Jul 30, 2018
5
Vitamin K2 improves femoral bone strength without altering bone mineral density in gastrectomized rats
Retraction
Jun Iwamoto , Yoshihiro Sato , Hideo Matsumoto
Journal of Nutritional Science and Vitaminology ( Center for Academic Publicati… )
Biology - Cellular Toxicology Medicine - Orthopedics
Euphemisms for Plagiarism Plagiarism of Article
4 citations
Open Access
DOI
Retraction: Jun 30, 2019
Published: Jun 30, 2014
6.4 years years since retraction
Effects of Vitamin K-2 Administration on Calcium Balance and Bone Mass in Young Rats Fed Normal or Low Calcium Diet
Retraction
Jun Iwamoto , James K Yeh , Tsuyoshi Takeda et al.
Hormone Research in Paediatrics ( Karger )
Biochemistry Biology - Cellular Nutrition +1 more
Concerns/Issues About Data Investigation by Company/Institution +2 more
5 citations
Open Access
DOI
Retraction: May 24, 2019
Published: May 09, 2005
6.5 years years since retraction
Effects of Vitamin D Supplementation on Calcium Balance and Bone Growth in Young Rats Fed Normal or Low Calcium Diet
Retraction
Jun Iwamoto , James K Yeh , Tsuyoshi Takeda et al.
Hormone Research in Paediatrics ( Karger )
Biology - Cellular Nutrition Toxicology +1 more
Concerns/Issues About Data Misconduct - Official Investigation(s) … +1 more
11 citations
Open Access
DOI
Retraction: May 24, 2019
Published: Mar 17, 2004
6.5 years years since retraction
Effects of combined administration of alfacalcidol and risedronate on cancellous and cortical bone mass of the tibia in…
Retraction
Jun Iwamoto , Azusa Seki , Tsuyoshi Takeda et al.
Chinese Journal of Physiology ( Wolters Kluwer - Medknow )
Biology - Cellular Toxicology Medicine - Orthopedics
Concerns/Issues About Authorship/Affili… Concerns/Issues About Data +1 more
0 citations
Open Access
DOI
Retraction: Apr 25, 2019
Published: Jun 30, 2008
6.6 years years since retraction
Beneficial effect of pretreatment and treatment continuation with risedronate and vitamin K2 on cancellous bone loss af…
Retraction
Jun Iwamoto , Tsuyoshi Takeda , Yoshihiro Sato et al.
Journal of Nutritional Science and Vitaminology ( Center for Academic Publicati… )
Biochemistry Toxicology Medicine - Obstetrics/Gynecol… +1 more
Duplication of/in Article
3 citations
Open Access
DOI
Retraction: Feb 28, 2019
Published: Oct 01, 2006
6.7 years years since retraction
Effects of alfacalcidol on cancellous and cortical bone mass in rats treated with glucocorticoid: a bone histomorphomet…
Retraction
Jun Iwamoto , Azusa Seki , Tsuyoshi Takeda et al.
Journal of Nutritional Science and Vitaminology ( Center for Academic Publicati… )
Biochemistry Toxicology Medicine - Orthopedics
Duplication of/in Article
9 citations
Open Access
DOI
Retraction: Feb 28, 2019
Published: Jun 01, 2007
6.7 years years since retraction
Comparative therapeutic effects of alendronate and alfacalcidol on cancellous and cortical bone mass and mechanical pro…
Retraction
Jun Iwamoto , Azusa Seki , Tsuyoshi Takeda et al.
Journal of Nutritional Science and Vitaminology ( Center for Academic Publicati… )
Biochemistry Toxicology Medicine - Obstetrics/Gynecol… +1 more
Duplication of/in Article
9 citations
Open Access
DOI
Retraction: Feb 28, 2019
Published: Feb 01, 2006
6.7 years years since retraction
Effect of risedronate on the cortical and cancellous bone mass and mechanical properties in ovariectomized rats: a comp…
Retraction
Jun Iwamoto , Azusa Seki , Tsuyoshi Takeda et al.
Journal of Nutritional Science and Vitaminology ( Center for Academic Publicati… )
Biochemistry Toxicology Medicine - Obstetrics/Gynecol… +1 more
Duplication of/in Article
10 citations
Open Access
DOI
Retraction: Feb 28, 2019
Published: Dec 01, 2006
6.7 years years since retraction
Comparative effects of vitamin K and vitamin D supplementation on calcium balance in young rats fed normal or low calci…
Retraction
Jun Iwamoto , James K Yeh , Tsuyoshi Takeda et al.
Journal of Nutritional Science and Vitaminology ( Center for Academic Publicati… )
Biochemistry Nutrition Toxicology
Duplication of/in Article
1 citations
Open Access
DOI
Retraction: Feb 28, 2019
Published: Aug 01, 2005
6.7 years years since retraction
Vitamin K Deficiency and Osteopenia in Elderly Women With Alzheimer's Disease
Retraction
Yoshihiro Sato , Yoshiaki Honda , Norimasa Hayashida et al.
Archives of Physical Medicine and Rehabilitation ( Elsevier )
Medicine - Geriatric Medicine - Neurology Medicine - Orthopedics +1 more
Concerns/Issues About Authorship/Affili… Concerns/Issues About Data +5 more
51 citations
Open Access
DOI
Retraction: Feb 19, 2019
Published: Mar 02, 2005
6.8 years years since retraction
Comparison of Effect of Treatment with Etidronate and Alendronate on Lumbar Bone Mineral Density in Elderly Women with …
Retraction
Jun Iwamoto , Tsuyoshi Takeda , Yoshihiro Sato et al.
Yonsei Medical Journal ( Yonsei University College of … )
Medicine - Geriatric Medicine - Orthopedics Medicine - Pharmacology +1 more
Duplication of Data Investigation by Company/Institution +2 more
13 citations
Open Access
DOI
Retraction: Dec 13, 2018
Published: Dec 31, 2005
6.9 years years since retraction
Abnormal bone and calcium metabolism in immobilized Parkinson's disease patients
Retraction
Yoshihiro Sato , Yoshiaki Honda , Jun Iwamoto et al.
Movement Disorders ( Wiley )
Biochemistry Medicine - Neurology Medicine - Orthopedics
Concerns/Issues About Authorship/Affili… Concerns/Issues About Data +1 more
68 citations
Open Access
DOI
Retraction: Dec 13, 2018
Published: Aug 19, 2005
6.9 years years since retraction
Differential Effect of Vitamin K and Vitamin D Supplementation on Bone Mass in Young Rats Fed Normal or Low Calcium Diet
Retraction
Jun Iwamoto , Tsuyoshi Takeda , Shoichi Ichimura et al.
Yonsei Medical Journal ( Yonsei University College of … )
Biochemistry Biology - Cellular Nutrition +1 more
Duplication of Data Investigation by Company/Institution +2 more
6 citations
Open Access
DOI
Retraction: Dec 13, 2018
Published: Feb 17, 2009
6.9 years years since retraction
Combined treatment with vitamin k2 and bisphosphonate in postmenopausal women with osteoporosis
Retraction
Jun Iwamoto , Tsuyoshi Takeda , Shoichi Ichimura
Yonsei Medical Journal ( Yonsei University College of … )
Medicine - Geriatric Medicine - Orthopedics Medicine - Pharmacology
Duplication of Data Investigation by Company/Institution +1 more
22 citations
Open Access
DOI
Retraction: Dec 13, 2018
Published: Mar 30, 2009
6.9 years years since retraction
Homocysteine as a predictive factor for hip fracture in stroke patients
Retraction
Yoshihiro Sato , Yoshiaki Honda , Jun Iwamoto et al.
Bone ( Elsevier )
Biochemistry Medicine - Neurology Medicine - Orthopedics
Date of Article and/or Notice Unknown Falsification/Fabrication of Data +3 more
28 citations
Open Access
DOI
Retraction: Sep 18, 2018
Published: Mar 17, 2005
7.2 years years since retraction
Abnormal calcium homeostasis in disabled stroke patients with low 25-hydroxyvitamin D
Retraction
Yoshihiro Sato , Masahide Kaji , Yoshiaki Honda et al.
Bone ( Elsevier )
Biochemistry Toxicology Medicine - Neurology
Author Unresponsive Concerns/Issues About Authorship/Affili… +1 more
15 citations
Open Access
DOI
Retraction: Sep 18, 2018
Published: Feb 04, 2004
7.2 years years since retraction
Negative myoglobin staining in hemiplegic muscle of acute stroke patients predicts functional recovery
Retraction
Yoshihiro Sato , Jun Iwamoto , T Kanoko et al.
American Journal of Physical Medicine & Rehabilitation ( Wolters Kluwer )
Anatomy/Physiology Biochemistry Biology - Cellular +1 more
Concerns/Issues About Authorship/Affili… Falsification/Fabrication of Data +4 more
5 citations
Open Access
DOI
Retraction: Aug 30, 2018
Published: Sep 01, 2005
7.2 years years since retraction
Therapeutic effect of risedronate on cancellous and cortical bone in ovariectomized osteopenic rats: a comparison with …
Retraction
Jun Iwamoto , Azusa Seki , Tsuyoshi Takeda et al.
Experimental Animals ( Japanese Association for Labo… )
Biochemistry Biology - Cellular Biology - Molecular +2 more
Duplication of/in Article Investigation by Company/Institution +2 more
3 citations
Open Access
DOI
Retraction: Jul 30, 2018
Published: Aug 01, 2006
7.3 years years since retraction
Effect of pre- and post-surgery treatment with risedronate on trabecular bone loss in ovariectomized rats
Retraction
Jun Iwamoto , Tsuyoshi Takeda , Yoshihiro Sato et al.
Experimental Animals ( Japanese Association for Labo… )
Biochemistry Biology - Cellular Biology - Molecular +2 more
Duplication of/in Article Investigation by Company/Institution +2 more
2 citations
Open Access
DOI
Retraction: Jul 30, 2018
Published: Nov 08, 2006
7.3 years years since retraction
Comparative effects of alendronate and alfacalcidol on cancellous and cortical bone mass and bone mechanical properties…
Retraction
Jun Iwamoto , Azusa Seki , Tsuyoshi Takeda et al.
Experimental Animals ( Japanese Association for Labo… )
Biochemistry Biology - Cellular Biology - Molecular +2 more
Duplication of/in Article Investigation by Company/Institution +2 more
5 citations
Open Access
DOI
Retraction: Jul 30, 2018
Published: Aug 01, 2006
7.3 years years since retraction