Latest Articles
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Yonsei medical journal · Apr 2004
Retracted PublicationDifferential effect of vitamin K and vitamin D supplementation on bone mass in young rats fed normal or low calcium diet.
The purpose of this study was to clarify the differential effect of vitamin K and vitamin D supplementation on bone mass in young rats fed a normal or low calcium diet. Ninety female Sprague-Dawley rats, 6 weeks of age, were randomized by stratified weight method into nine groups with 10 rats in each group: baseline control, and 0.5% (normal) or 0.1% (low) calcium diet, either alone, or with vitamin K (30 mg/100g, food intake), vitamin D (25 micro g/100 g, food intake), or vitamin K + vitamin D. After 10 weeks of feeding, bone histomorphometric analyses were performed on cortical bone of the tibial shaft and cancellous bone of the proximal tibia. ⋯ Vitamin D supplementation reduced the maturation-related cancellous bone gain, prevented the reduction in periosteal bone gain, and enhanced the enlargement of the marrow cavity, with no significant effect on the reduction in the maturation-related cortical bone gain in rats fed a low calcium diet, and increased the maturation- related cancellous and cortical bone gains with increased periosteal bone gain in rats fed a normal calcium diet. An additive effect of vitamin K and vitamin D on the maturation- related cortical bone gain was found in rats fed a normal calcium diet. This study shows the differential effects of vitamin K and vitamin D supplementation on cancellous and cortical bone mass in young rats fed a normal or low calcium diet, as well as the additive effect on cortical bone under calcium sufficient condition.
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Retracted Publication
The influence of resection and aneuploidy on mortality in oral leukoplakia.
Although the standard treatment of oral leukoplakia ranges from watchful waiting to complete resection, the value of these approaches is unknown. ⋯ Complete resection of aneuploid leukoplakia does not reduce the high risk of aggressive carcinoma and death from oral cancer.
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AJNR Am J Neuroradiol · Mar 2004
Retraction Of PublicationRe: Retraction request: AJNR 23: 868-870, May 2002.
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Cochrane Db Syst Rev · Jan 2004
Retraction Of PublicationInteractive Health Communication Applications for people with chronic disease.