PMID- 36580899 OWN - NLM STAT- MEDLINE DCOM- 20230605 LR - 20230605 IS - 1421-9867 (Electronic) IS - 0012-2823 (Linking) VI - 104 IP - 3 DP - 2023 TI - Proton Pump Inhibitor Treatment Has Little Effects on Secretion of Saliva in Patients with Proton Pump Inhibitor-Responsive Mild Reflux Esophagitis and Non-Erosive Reflux Disease. PG - 187-192 LID - 10.1159/000528086 [doi] AB - INTRODUCTION: The secretion of saliva, which is triggered by acid reflux into the esophagus via the esophagosalivary reflex, plays a crucial role in the defensive mechanisms of the esophagus. The volume of saliva secreted in patients with gastroesophageal reflux disease (GERD) is reduced. However, the effects of proton pump inhibitors (PPI) on the secretion of saliva have rarely been reported. Therefore, the present study investigated changes in the volume and pH of saliva after the cessation of PPI. MATERIALS AND METHODS: We retrospectively reviewed the records of consecutive patients previously diagnosed with mild reflux esophagitis (RE) or non-erosive reflux disease (NERD) controlled with PPI (including vonoprazan) who performed the salivary secretion test before and after a 2-week cessation of PPI. The volume, pH, and pH after acid loading (buffering capacity) of saliva were compared before and after the cessation of PPI. RESULTS: Thirty-two patients (25 NERD, 7 mild RE) were included. The second saliva test was performed a median interval of 14 months [12.0-15.3] after the first test. No significant differences were observed in the volume of saliva secreted before and after the cessation of PPI (before 4.0 mL [2.7-6.0] vs. after 4.0 mL [2.3-5.9], p = 0.894). No significant differences were noted in pH or changes in pH after acid loading before and after the cessation of PPI (pH: before 7.1 +/- 0.24 vs. after 7.0 +/- 0.24, p = 0.1. Delta pH after acid loading: before 1.0 [0.8-1.2] vs. after 1.0 [0.8-1.2], p = 0.844). CONCLUSION: The cessation of PPI did not appear to affect the volume, pH, or buffering capacity of saliva in patients with PPI-responsive mild RE and NERD. CI - (c) 2022 S. Karger AG, Basel. FAU - Hoshikawa, Yoshimasa AU - Hoshikawa Y AD - Department of Gastroenterology, Nippon Medical School, Graduate School of Medicine, Tokyo, Japan, y-hoshikawa@nms.ac.jp. FAU - Momma, Eri AU - Momma E AD - Department of Gastroenterology, Nippon Medical School, Graduate School of Medicine, Tokyo, Japan. FAU - Hoshino, Shintaro AU - Hoshino S AD - Department of Gastroenterology, Nippon Medical School, Graduate School of Medicine, Tokyo, Japan. FAU - Kawami, Noriyuki AU - Kawami N AD - Department of Gastroenterology, Nippon Medical School, Graduate School of Medicine, Tokyo, Japan. FAU - Kitasako, Yuichi AU - Kitasako Y AD - Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan. AD - Dental Clinic, Ministry of Foreign Affairs, Tokyo, Japan. FAU - Ikeda, Masaomi AU - Ikeda M AD - Oral Prosthetic Engineering, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan. FAU - Iwakiri, Katsuhiko AU - Iwakiri K AD - Department of Gastroenterology, Nippon Medical School, Graduate School of Medicine, Tokyo, Japan. LA - eng PT - Journal Article DEP - 20221229 PL - Switzerland TA - Digestion JT - Digestion JID - 0150472 RN - 0 (Proton Pump Inhibitors) SB - IM MH - Humans MH - *Esophagitis, Peptic/drug therapy/etiology MH - Proton Pump Inhibitors/pharmacology/therapeutic use MH - Saliva MH - Retrospective Studies MH - Treatment Outcome MH - *Gastroesophageal Reflux/drug therapy/diagnosis OTO - NOTNLM OT - Gastroesophageal reflux OT - Proton pump inhibitors OT - Salivation EDAT- 2022/12/30 06:00 MHDA- 2023/06/05 06:42 CRDT- 2022/12/29 18:22 PHST- 2022/09/03 00:00 [received] PHST- 2022/11/12 00:00 [accepted] PHST- 2023/06/05 06:42 [medline] PHST- 2022/12/30 06:00 [pubmed] PHST- 2022/12/29 18:22 [entrez] AID - 000528086 [pii] AID - 10.1159/000528086 [doi] PST - ppublish SO - Digestion. 2023;104(3):187-192. doi: 10.1159/000528086. Epub 2022 Dec 29.