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        A randomized double-blind placebo-controlled trial on the effect of magnesium oxide in patients with chronic constipation

        Sumire Mori,Toshihiko Tomita,Kazuki Fujimura,Haruki Asano,Tomohiro Ogawa,Takahisa Yamasaki,Takashi Kondo,Tomoaki Kono,Katsuyuki Tozawa,Tadayuki Oshima,Hirokazu Fukui,Takeshi Kimura,Jiro Watari,Hiroto 대한소화기 기능성질환∙운동학회 2019 Journal of Neurogastroenterology and Motility (JNM Vol.25 No.4

        Background/Aims Magnesium oxide (MgO) has been frequently used as a treatment for chronic constipation (CC) since the 1980s in Japan. The aim of this study is to evaluate its therapeutic effects of MgO in Japanese CC patients. Methods We conducted a randomized, double-blind placebo-controlled study. Thirty-four female patients with mild to moderate constipation were randomly assigned to either placebo (n = 17) or MgO group (n = 17) 0.5 g × 3/day for 28 days. Primary endpoint was overall improvement over the 4-week study period. Secondary endpoints were changes from baseline in spontaneous bowel movement (SBM), response rates of complete spontaneous bowel movement (CSBM), stool form, colonic transit time (CTT), abdominal symptom, and quality of life. Results One patient failed to complete the medication regimen and was omitted from analysis: data from 16 placebo and 17 MgO patients were analyzed. The primary endpoint was met by 25.0% of placebo vs 70.6% of MgO group (P = 0.015). MgO significantly improved SBM changes compared to placebo (P = 0.002). However, MgO did not significantly improved response rates of CSBM compared to placebo (P = 0.76). In addition, MgO significantly improved Bristol stool form scale changes (P < 0.001) and significantly improved CTT compared to the placebo group (P < 0.001). MgO significantly improved the Japanese version of the patient assessment of constipation quality of life (P = 0.003). Conclusion Our placebo-controlled study demonstrated that MgO was effective treatment for improving defecation status and shortened CTT in Japanese CC patients with mild to moderate symptoms. Background/Aims Magnesium oxide (MgO) has been frequently used as a treatment for chronic constipation (CC) since the 1980s in Japan. The aim of this study is to evaluate its therapeutic effects of MgO in Japanese CC patients. Methods We conducted a randomized, double-blind placebo-controlled study. Thirty-four female patients with mild to moderate constipation were randomly assigned to either placebo (n = 17) or MgO group (n = 17) 0.5 g × 3/day for 28 days. Primary endpoint was overall improvement over the 4-week study period. Secondary endpoints were changes from baseline in spontaneous bowel movement (SBM), response rates of complete spontaneous bowel movement (CSBM), stool form, colonic transit time (CTT), abdominal symptom, and quality of life. Results One patient failed to complete the medication regimen and was omitted from analysis: data from 16 placebo and 17 MgO patients were analyzed. The primary endpoint was met by 25.0% of placebo vs 70.6% of MgO group (P = 0.015). MgO significantly improved SBM changes compared to placebo (P = 0.002). However, MgO did not significantly improved response rates of CSBM compared to placebo (P = 0.76). In addition, MgO significantly improved Bristol stool form scale changes (P < 0.001) and significantly improved CTT compared to the placebo group (P < 0.001). MgO significantly improved the Japanese version of the patient assessment of constipation quality of life (P = 0.003). Conclusion Our placebo-controlled study demonstrated that MgO was effective treatment for improving defecation status and shortened CTT in Japanese CC patients with mild to moderate symptoms.

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        Esophagography in Patients With Esophageal Achalasia Diagnosed With High-resolution Esophageal Manometry

        ( Takahisa Yamasaki ),( Toshihiko Tomita ),( Sumire Mori ),( Mayu Takimoto ),( Akio Tamura ),( Ken Hara ),( Takashi Kondo ),( Tomoaki Kono ),( Katsuyuki Tozawa ),( Yoshio Ohda ),( Tadayuki Oshima ),( 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2018 Journal of Neurogastroenterology and Motility (JNM Vol.24 No.3

        Background/Aims High-resolution esophageal manometry (HREM) is considered to be the gold standard for the diagnosis of achalasia. However, the Japan Esophageal Society recommends that esophagography is also accurate in either diagnosing or excluding the disorder. Accordingly, we compared the efficacy of esophagography and HREM in diagnosing achalasia patients with upper gastrointestinal symptoms. Methods HREM was performed in 126 patients with dysphagia. The final diagnosis of achalasia was done using HREM. Demographic data, symptoms, quality of life (QOL) were also obtained. We assessed the patients who were not able to be diagnosed by esophagography and compared the diagnostic values for esophagography with HREM-based achalasia diagnosis as the gold standard. Results A total of 48 cases of patients with achalasia, including 21 men and 27 women (mean age, 48.4 ± 19.6 years), were included in the study. Two patients were excluded. Of the remaining 46 patients, 36 (78.3%) patients were diagnosed as having achalasia by esophagography. The diagnostic sensitivity, specificity, and accuracy of esophagography were 78.3%, 88.0%, and 83.0%, respectively. Patients with type III achalasia had significantly lower physical QOL score than those with type I or II achalasia. Although the mental QOL score in patients with type III achalasia tended to decrease compared with that in patients with type I and II achalasia, the difference was not statistically significant. Conclusions Diagnosing esophageal achalasia by using esophagography alone has limited yield. Therefore, HREM should be used in patients with dysphagia and in whom achalasia cannot be diagnosed using EGD or esophagography. (J Neurogastroenterol Motil 2018;24:403-409)

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