プロトン-カリウムATPアーゼ阻害薬
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- 1. プロトンポンプ阻害薬:胃酸分泌が関与する疾患への使用と副作用の概要proton pump inhibitors overview of use and adverse effects in the treatment of acid related disorders [show details]
… Proton pump inhibitors (PPIs) effectively block gastric acid secretion by irreversibly binding to and inhibiting the hydrogen-potassium ATPase pump that resides on the luminal surface of the parietal …
- 2. 腎尿細管性アシドーシスの概要と病態生理、およびカリウムバランスへの影響overview and pathophysiology of renal tubular acidosis and the effect on potassium balance [show details]
… Untreated patients with a proton pump defect tend to waste potassium and become hypokalemic . The potassium wasting is generated by the reduction… tubules via a luminal H-ATPase pump and, to a lesser degree, via an H-K-ATPase pump that secretes hydrogen ions and reabsorbs potassium By contrast, potassium secretion occurs… Metabolic acidosis inhibits a component of proximal tubule sodium reabsorption . This delivers more sodium to the distal tubule sites where aldosterone acts. Potassium wasting by these…
- 3. 低マグネシウム血症の原因causes of hypomagnesemia [show details]
… gamma subunit of Na-K-ATPase and the potassium channel Kir5.1 . These findings suggest that some inactivating mutations of HNF-1-beta can inhibit the Na-K-ATPase and Kir5.1,… omeprazole (usually for more than one year) and other proton pump inhibitors (PPIs) .…
- 4. COX-2選択的阻害剤の概要overview of selective cox 2 inhibitors [show details]
… an NSAID with a proton pump inhibitor, an NSAID with misoprostol, or a selective cyclooxygenase (COX)-2 inhibitor (with or without a proton pump inhibitor).… and/or concurrent use of medications that impair renal potassium excretion. After discontinuation of selective COX-2 inhibitors and suspect agents in combination with…
- 5. 抗潰瘍薬:作用機序、薬理作用、副作用antiulcer medications mechanism of action pharmacology and side effects [show details]
… secretion by irreversibly binding to and inhibiting the hydrogen-potassium ATPase pump that resides on the luminal surface of…antagonists (H2RAs) inhibit acid secretion by blocking H2 receptors on the parietal cell Proton pump inhibitors (PPIs) effectively block acid secretion by irreversibly binding to and inhibiting the hydrogen-potassium…
English Journal
- The effects of manganese (II) but not nickel (II) ions on Enterococcus hirae cell growth, redox potential decrease, and proton-coupled membrane transport.
- Vardanyan Z, Trchounian A.
- Cell biochemistry and biophysics. 2013 ;67(3)1301-6.
- Enterococcus hirae grow well under anaerobic conditions by fermenting glucose, accompanied with the decrease of oxidation-reduction potential (Eh) from positive values to negative ones. It was shown that heavy metals-copper and iron ions-affect E. hirae growth and alter Eh and proton-potassium ions
- PMID 23712873
- Fe(III) and Fe(II) ions different effects on Enterococcus hirae cell growth and membrane-associated ATPase activity.
- Vardanyan Z, Trchounian A.
- Biochemical and biophysical research communications. 2012 Jan;417(1)541-5.
- Enterococcus hirae is able to grow under anaerobic conditions during glucose fermentation (pH 8.0) which is accompanied by acidification of the medium and drop in its oxidation-reduction potential (E(h)) from positive values to negative ones (down to ∼-200 mV). In this study, iron (III) ions (Fe(3
- PMID 22166211
- The effects of copper (II) ions on Enterococcus hirae cell growth and the proton-translocating FoF1 ATPase activity.
- Vardanyan Z, Trchounian A.
- Cell biochemistry and biophysics. 2010 May;57(1)19-26.
- Enterococcus hirae grow well under anaerobic conditions at alkaline pH (pH 8.0) producing acids by glucose fermentation. Bacterial growth was shown to be accompanied by decrease of redox potential from positive values (approximately +35 mV) to negative ones (approximately -220 mV). An oxidizer coppe
- PMID 20352375
Related Links
- The postulated displacement of hydronium from site H2 by Lys791 is strongly supported by the effects of mutating the homologous lysine (Lys800) in the toad bladder H,K-ATPase []. This electroneutral proton pump can ...
- 製品コード 製品説明 文献中Selleckの製品使用例 お客様のフィードバック S1478 新 Oligomycin A Oligomycin A is an inhibitor of ATP synthase ... S7046 Brefeldin A Brefeldin A is a lactone antibiotic and ATPase inhibitor for protein ...
- Santa Cruz Biotechnology now offers a broad range of ATPase Inhibitors. ATPases are enzymes which catalyze the hydrolysis of ATP to form ADP, thus releasing energy which can be used to drive other reactions and ...
★リンクテーブル★
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- 英
- proton pump inhibitor PPI
- 同
- プロトン-カリウムATPアーゼ阻害薬 proton-potassium ATPase inhibitor、H+ポンプ阻害薬
- 胃潰瘍の治癒率を向上する (⇔H2受容体拮抗薬)
プロトンポンプ阻害薬
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相互作用
プロトンポンプ
H+/K+ ATPase ・・・これはNa+/K+ ATPaseと60%相同性を持つ
2,4のαサブユニットと同数のβサブユニットを含む。
αサブユニット10回膜貫通, 120-150kDa, glycoprotein
αは管腔側、原形質膜まで。細胞内輸送に必要。
βサブユニットは管腔側に突き出ており、反対側は膜内に埋もれている。
休止期には小胞体内内腔へのH+,K+,Cl-の移動、分泌期には小胞は管腔の細胞膜と癒合してK+, Cl-を管腔側に排出する一方でH+を排出でしてK+を取り込む。
PPIは弱塩基性
PPIはH+と反応してPPIaとなりS-S-活性体となり、H+,K+-ATPaseのSH基と結合して不可逆的に阻害する。
比較
PPI:胃潰瘍の治癒率↑
H2R阻害薬:十二指腸潰瘍の治癒率↑
PPI問題
胃潰瘍8
十二指腸6
逆流性食道炎8
副作用
血中ガストリン↑→ECL cell↑→リバウンドが激しい
week end therapy: 週末3日だけ投与後休薬
ピレンゼピン(Mi R blocker), PG(プロスタグランジン) → ガストリン↑を軽減
ラベプラゾール:ガストリン濃度を上げず酸分泌↓
→リバウンドが少ない。
PPI抵抗性潰瘍:PPIによる酸分泌抑制不十分
①個人差によるPPIの用量不足
②胃内でのPPIの不活性化→
胃内容の排泄遅延。PPIが不活化、アルカリに晒される。
副作用
- http://www.uptodate.com/contents/overview-and-comparison-of-the-proton-pump-inhibitors-for-the-treatment-of-acid-related-disorders?source=search_result&search=%EF%BC%B0%EF%BC%B0%EF%BC%A9&selectedTitle=1~150#H59974871
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- 英
- proton-potassium ATPase inhibitor
- 関
- プロトンポンプ阻害薬
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- 関
- abrogate、block、depress、depression、deter、inhibition、interdict、prevent、prevention、repress、repression、restrain、restraint、suppress、suppression
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- 関
- blocker、depressant、suppressant
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アデノシントリホスファターゼ阻害薬。ATPase阻害薬
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- 同
- ATP hydrolase
- 関
- アデノシン三リン酸
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