PMID- 21723045 OWN - NLM STAT- MEDLINE DCOM- 20111221 LR - 20181201 IS - 1532-2777 (Electronic) IS - 0306-9877 (Linking) VI - 77 IP - 3 DP - 2011 Sep TI - Gradual cessation of proton pump inhibitor (PPI) treatment may prevent rebound acid secretion, measured by the alkaline tide method, in dyspepsia and reflux patients. PG - 451-2 LID - 10.1016/j.mehy.2011.06.007 [doi] AB - Gastro esophageal reflux disease and ulcer related or non-ulcer dyspepsia, attacks 20% of the Western population. These millions of patients are treated continuously with PPI for different periods, many for many years. Recently, rebound acid hypersecretion was recognized as a major clinical event after cessation of PPI therapy. Sustained hypergastrinemia due to daily PPI therapy causes increased acid-secretory capacity that appears when the drug is stopped. The transient increase in blood and urinary pH following gastric secretion has been termed the alkaline tide phenomenon. Carbonic acid, formed in the presence of the enzyme carbonic anhydrase, neutralizes intracellular hydroxyl ions produced as a result of luminal acid secretion. The bicarbonate generated is removed from the cell via the baso-lateral chloride bicarbonate exchanger. We have shown in several studies that this phenomenon parallels acid secretion. Thus, stimulation of acid secretion with test meal increased base excess maximally after 45 min and these changes parallel peak acid output measured in gastric aspirate. We hypothesize that gradual step down cessation of PPI will prevent this clinical relevant event. By measuring alkaline tide after PPI cessation we may prove this hypothesis. CI - Copyright (c) 2011 Elsevier Ltd. All rights reserved. FAU - Niv, Yaron AU - Niv Y AD - Department of Gastroenterology, Rabin Medical Center, Tel Aviv University, 39 Jabotinski Street, Petach Tikva 49100, Israel. yniv@clalit.org.il LA - eng PT - Journal Article DEP - 20110701 PL - United States TA - Med Hypotheses JT - Medical hypotheses JID - 7505668 RN - 0 (Proton Pump Inhibitors) SB - IM MH - Drug Administration Schedule MH - Dyspepsia/complications/*drug therapy MH - Gastric Acid/*metabolism MH - Gastroesophageal Reflux/complications/*drug therapy/*prevention & control MH - Humans MH - Proton Pump Inhibitors/*administration & dosage/pharmacology/therapeutic use MH - Secondary Prevention MH - Secretory Rate/drug effects EDAT- 2011/07/05 06:00 MHDA- 2011/12/22 06:00 CRDT- 2011/07/05 06:00 PHST- 2011/03/16 00:00 [received] PHST- 2011/06/07 00:00 [accepted] PHST- 2011/07/05 06:00 [entrez] PHST- 2011/07/05 06:00 [pubmed] PHST- 2011/12/22 06:00 [medline] AID - S0306-9877(11)00265-9 [pii] AID - 10.1016/j.mehy.2011.06.007 [doi] PST - ppublish SO - Med Hypotheses. 2011 Sep;77(3):451-2. doi: 10.1016/j.mehy.2011.06.007. Epub 2011 Jul 1.