ニコチン酸アミドのリボース

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Warning

• 危険有害性情報

  H302：飲み込むと有害

  H315：皮膚刺激

  H319：強い眼刺激

  H335：呼吸器への刺激のおそれ

• 注意書き

  P261：粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。

  P264：取扱い後は皮膚をよく洗うこと。

  P264：取扱い後は手や顔をよく洗うこと。

  P270：この製品を使用する時に、飲食または喫煙をしないこ と。

  P271：屋外または換気の良い場所でのみ使用すること。

  P280：保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。

  P301+P312：飲み込んだ場合：気分が悪い時は医師に連絡する こと。

  P302+P352：皮膚に付着した場合：多量の水と石鹸で洗うこと。

  P304+P340：吸入した場合：空気の新鮮な場所に移し、呼吸しやすい 姿勢で休息させること。

  P305+P351+P338：眼に入った場合：水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。

  P321：特別な処置が必要である（このラベルの．．． を見よ）。

  P330：口をすすぐこと。

  P332+P313：皮膚刺激が生じた場合：医師の診断/手当てを受けるこ と。

  P337+P313：眼の刺激が続く場合：医師の診断/手当てを受けること。

  P403+P233：換気の良い場所で保管すること。容器を密閉 しておくこと。

  P405：施錠して保管すること。

  P501：内容物/容器を．．．に廃棄すること。

ニコチン酸アミドのリボース 化学特性,用途語,生産方法

• 説明

  Nicotinamide Riboside (NR) is a next-generation vitamin B3 that has been found to be naturally-occurring in milk in trace amounts. The metabolism of NR is unique from that of other more commonly known forms of vitamin B3 , nicotinamide and nicotinic acid. Specifically, NR has been shown in a pre-clinical study to be the most effective form of vitamin B3 at increasing nicotinamide adenine dinucleotide (NAD+)2 .
  Nicotinic acid (also known as niacin) and nicotinamide (also known as niacinamide) were discovered in the 1930’s to be the factors that cured pellagra . Niacin is known to cause severe flushing . In 2004, nicotinamide riboside emerged as a newly discovered NAD+ precursor and does not bind to the receptor responsible for flushing.
  NR has pre-clinically demonstrated that it is superior to both niacin and nicotinamide, both of which are standard forms of vitamin B3 commonly used in vitamin supplements and foods, at boosting NAD+2 . This is due to the fact that NR is not reliant upon a conversion step requiring the enzyme “NAMPT” , see Figure below. The activity level of NAMPT determines the amount of nicotinamide that is converted into NAD+ , which is why this particular step in the process is often referred to as the “rate limiting step”. As normal aging occurs, the activity of NAMPT is thought to decrease. NR can be used by the cell to make NAD+ without this enzymatic step.
  
  NAD+ synthesis from nicotinic acid, nicotinamide, and nicotinamide riboside

• 化学的特性

  Nicotinamide riboside (NR) is part of the B3 vitamin family. Like other forms of vitamin B3, nicotinamide riboside gets converted into nicotinamide adenine dinucleotide (NAD+), a coenzyme essential for life. For this reason, it is often called a NAD+ precursor because it is part of the series of chemical steps that are required to create NAD+.
  Different biosynthetic pathways are responsible for converting the different B3 vitamins into NAD+. The enzyme nicotinamide phosphoribosyltransferase (Nampt) catalyzes the rate-limiting step of the two-step pathway converting nicotinamide to NAD+. NR kinase enzymes can also function as a salvage pathway for NAD+, but this pathway is not essential.

• 使用

  Nicotinamide Riboside can be used in biological study of gene circadian reprogramming transcriptome in liver identified metabolic pathways of aging in mouse. It also increases NAD+ in the cerebral cortex and reduces cognitive deterioration in a transgenic mouse model of Alzheimer’s disease.

• 定義

  ChEBI: Nicotinamide riboside is a pyridine nucleoside consisting of nicotinamide with a beta-D-ribofuranosyl moiety at the 1-position. It is a metabolite found in or produced by Saccharomyces cerevisiae. It is an orally available form of vitamin B3 and precursor of nicotinamide adenine dinucleotide (NAD+) with potential use in the treatment of chemotherapy induced peripheral neuropathy (CIPN).

• 利点

  Nicotinamide riboside (NR) is one of the viable natural precursors for the biosynthesis of NAD+ via two alternative pathways involving the purine nucleoside phosphorylase or the nicotinamide riboside kinase enzymes. Therapeutic benefits of nicotinamide riboside supplementation:
  Constant dietary supplementation of nicotinamide riboside has been shown to increase the NAD+ levels in middle aged to elderly people.
  It may support mitochondrial function.
  It may enhance memory and combat cognitive decline.
  It might lengthen your life.
  It might promote muscle quality and strength.
  It might counter the effects of a high-fat diet.
  In 2016 NR received the GRAS (Generally Recognized As Safe) status from the FDA. NR also demonstrated the potential to slow aging processes in mice models.

• 生物学の機能

  Nicotinamide adenine dinucleotide (NAD+) is a critical coenzyme that, when reduced to NADH, serves as a reducing agent to donate electrons for oxidative phosphorylation and ATP synthesis in mitochondria. NAD+ is a critical cofactor for enzymes such as sirtuins, ADP-ribosyltransferases (ARTs), and Poly [ADP- ribose] polymerases (PARPs) and is continuously consumed by these enzymes. The NAD+/NADH ratio is a critical component of the redox state of the cell. (Verdin 2015). By some counts, NAD or the related NADP participates in a quarter of all cellular reactions (Opitz Heiland 2015). There are separate compartments of NAD+ in the nucleus, mitochondria, and cytoplasm (Verdin 2015).
  Nicotinamide riboside (NR) can be converted into NAD+ through an intermediate step in which it is converted into nicotinamide mononucleotide (NMN) by NR kinase (Nrk) and then to NAD+ by NMNATs. NR is naturally found in some foods but at very low quantities (e.g. low micromolar range). Historically, NR was difficult to obtain in large purified amounts, but thanks to advances in synthesis methods (Yang 2007), as of June 2013, it is sold as a dietary supplement.

• 臨床応用

  Nicotinamide riboside is important because it is a potent and bioavailable pre-cursor to NAD+. NAD+ is essential to life and is known to be vital to functions that ensure proper cellular and energy metabolism. The most well-known function of NAD+ is the transferring of electrons to the machinery in the cell that produces ATP, the energy currency of all cells.
  NAD+ is increasingly being shown to have important functions beyond electron transfer. One of the most promising potential roles for NR as a pre-cursor to NAD+ is activation of sirtuins, enzymes associated with a wide variety of functions related to metabolism and longevity.

• 副作用

  No serious adverse effects have been reported in human studies, though most of the studies so far have been short in duration and low in participant numbers. The need for larger scale and more robust human studies is critical if NR is to be properly evaluated.
  To date, some people have reported mild to moderate side effects, including nausea, fatigue, headaches, diarrhea, stomach upset and indigestion. While that seems to suggest NR is likely safe, the lack of large scale long-term studies means that this cannot be confirmed.
  As always, if you do decide to take a NR supplement and experience any adverse effects, you should cease taking it immediately and consult your doctor.

• 安全性

  Nicotinamide riboside has a successful New Dietary Ingredient Notification with FDA (NDIN 882) for daily recommended intake of not more than 180 mg/d.
  Nicotinamide riboside is generally recognized as safe (FDA GRAS Notice No. 635) for use in vitamin waters, protein shakes, nutrition bars, gum, chews, and powdered beverages. Maximum use level 0.0057% by weight.

ニコチン酸アミドのリボース 上流と下流の製品情報

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ニコチン酸アミドのリボース スペクトルデータ(¹HNMR)

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