著者
鈴木 洋一 坂本 修 真下 陽一 羽田 明
出版者
公益社団法人 日本ビタミン学会
雑誌
ビタミン (ISSN:0006386X)
巻号頁・発行日
vol.86, no.9, pp.499-507, 2012-09-25 (Released:2017-10-10)
参考文献数
31

Biotin is a water-soluble vitamin and a cofactor of several types of carboxylases. Insufficient intake of biotin and a congenital deficiency of enzymes requiring biotin as a cofactor in cells cause clinical symptoms called multiple carboxylase deficiency (MCD). In recent years, several reports have shown that infants with food allergy and/or atopic eczema have developed MCD after being fed with peptide formulas. Peptide formulas available in Japan contain very little biotin because biotin has not been permitted to be added to regular foods as an additive. This, however, may lead to nutritional biotin deficiency in some infants fed with such a peptide milk. We investigated the incidence of nutritional biotin deficiency and congenital enzyme deficiency in Japan. We sent a questionnaire to 921 hospitals with a pediatric department to cover all areas of Japan. The response rate was 64%. The rate of hospitals that use peptide milk in the therapy of allergic diseases was 49%. The estimated incidence of biotin deficiency was at least 70 cases in the last 10 years. Since the first diagnosis of holocarboxylase synthetase deficiency (HCSD) in 1982, HCSD and biotinidase deficiency have been confirmed in 28 and 2 cases, respectively. These data suggest that the incidence of congenital enzyme deficiency is about 1 case per year. Supplementation of biotin is highly recommended when infants are fed with peptide milk in Japan.
著者
矢野 友啓
出版者
公益社団法人 日本ビタミン学会
雑誌
ビタミン (ISSN:0006386X)
巻号頁・発行日
vol.89, no.12, pp.561-572, 2015-12-25 (Released:2017-08-10)

It is well known that vitamin E acts as a useful preventive agent against several types of cancers and stroke. However, there are conflicting results on a role of vitamin E in the prevention of these diseases. In order to clarify the conflicting results, meta-analysis of current results obtained from randomized controlled trials (RCTs) was conducted. Meta-analysis of 7 RCTs on cancer identified showed no significant difference on the effect of vitamin E supplementation on incidence and mortality in cancers tested. However, there was heterogeneity in the meta-analysis of prostate cancer incidence, indicating the possibility that vitamin E supplementation has a suppressive effect against the cancer in some cases. With respect to incidence and mortality in stroke, meta-analysis of 6 RCTs identified was conducted, and vitamin E supplementation significantly reduced the incidence of ischemic stroke, but not hemorrhagic stroke. Thus, it is suggested that vitamin E supplementation has a preventive effect on ischemic stroke.
著者
久保寺 登
出版者
公益社団法人 日本ビタミン学会
雑誌
ビタミン (ISSN:0006386X)
巻号頁・発行日
vol.87, no.2, pp.95-103, 2013-02-25 (Released:2017-08-10)
参考文献数
35

In vitamin D research, there are three milestones from the perspective of pharmaceutical studies. The first represents the early stage of vitamin D research and involves the discovery of vitamin D and its physiological significance as an anti-rickets factor. The second is the elucidation of the vitamin D activation pathway in the body and the discovery of the biologically active metabolites of vitamin D. The clinical application of active vitamin D or its prodrug was also attempted to make up for the deficiency caused by poor vitamin D activation. The third is characterized by the discovery of the differentiation-inducing properties of active vitamin D. This showed the diversity of the physiological actions of active vitamin D, which initially had been thought only to contribute to bone and calcium metabolism. Because these physiological actions were clinically useful, the third discovery revealed opportunities for the development of drugs appropriate to specific purposes by synthesizing analogs to separate biological effects. Active vitamin D analogs based on the findings during the third milestone are now commercially available and are contributing to current clinical practice. This article discusses the various milestones outlining vitamin D and analogs in terms of clinical applications and pharmaceutical studies.
著者
小嶋 良種 吉川 豊 飯倉 奈美 上田 理恵 市村 彰男 土江 松美 桜井 弘
出版者
公益社団法人 日本ビタミン学会
雑誌
ビタミン (ISSN:0006386X)
巻号頁・発行日
vol.77, no.10, pp.571-576, 2003-10-25 (Released:2017-12-26)
参考文献数
26
被引用文献数
1

Insuhnomimetic activities of Zn(II) complexes (ZnCl(Vc) and Zn(Vc)_2) with vitamin C (VcH) were found in isolated rat adipocytes treated with epinephrme in terms of inhibition of free fatty acid release. Furthermore, the improvement of glucose tolerance for KK-A^y mice model with type 2 diabetes melhtus was observed when ZnCl(Vc) was orally administered for 4 weeks
著者
青山 みさ子 四童子 好廣 山口 義彦 貞森 直樹
出版者
公益社団法人 日本ビタミン学会
雑誌
ビタミン (ISSN:0006386X)
巻号頁・発行日
vol.82, no.3, pp.179-185, 2008
参考文献数
11

Single-nucleotide polymorphisms (SNPs) of the mitochondrial NADH dehydrogenase subunit-2 (ND2) andβ3-adrenergic receptor (BAR3) genes are well established to be associated with life style-related diseases. The ND2 gene variant (Mt5178A) is associated with longevity or less susceptibility to adult-onset diseases. The BAR3 gene allelic variant (Trp64Arg and Arg64Arg) is linked with obesity or non-insulin-dependent diabetes mellitus. We investigated whether the combination of these 2 genes affect eating behavior, and found that the BAR3-normal (Trp64Trp)+ND2-variant (Mt5178A) group preferred much carbohydrate and less animal protein, Vitamin B_2 (B_<2)>, calcium in comparison with the other genetic groups. Less intake of B_2 was principally associated with Mt5178A in this group. Taking account that flavin adenine dinucleotide is a coenzyme of the NADH dehydrogenase which composes the proton-pumping complex I of the mitochondrial electron transport system, the association between Mt5178A variant and less B_2 intake is tremendously interesting. In this paper, we discuss a possible association between genetic polymorphism and eating behavior by summarizing our own research data.
著者
美濃 眞
出版者
公益社団法人 日本ビタミン学会
雑誌
ビタミン (ISSN:0006386X)
巻号頁・発行日
vol.74, no.10, pp.501-515, 2000-10-25 (Released:2017-12-26)
参考文献数
29
被引用文献数
4

現在, 臨床検査企業の数社でビタミンの測定が行われているが, 測定ビタミン値に関しては精度管理機構もなく, また各社の測定法の実態も不明である. したがって, 依頼者に報告されるビタミンの測定値の信頼性もまったく企業各社に依存した状態であるので, それらのビタミン測定値の正確さと信頼性を確立して貰うために, 日本ビタミン学会では本学会において臨床検体の測定にかかわっている, 各ビタミンの研究者による臨床検査検体試料のビタミン測定法を掲載することとした.