Background
Bismuth quadruple therapy is the treatment of choice for the first‐line therapy of Helicobacter pylori infection in areas of high clarithromycin resistance. Currently, the impact of the ...promising treatment on gut microbiota remains unclear.
Aim
To investigate the short‐term and long‐term impacts of bismuth quadruple therapy on gut microbiota.
Methods
Adult patients with H. pylori‐related gastritis were treated with 14‐day bismuth quadruple therapy. Fecal samples were collected before treatment at week 2, week 8, and week 48. Nucleic acid extraction from fecal samples was performed. The V3‐V4 region of the bacterial 16S rRNA gene was amplified by polymerase chain reaction and sequenced with the MiSeq followed by data analysis using Qiime pipeline.
Results
Eleven patients received complete follow‐up. Before treatment, the most abundant phyla were Firmicutes (45.3%), Bacteroidetes (24.3%), Proteobacteria (9.9%), and Actinobacteria (5.0%). At the end of bismuth therapy, the relative abundances of Bacteroidetes and Actinobacteria decreased to 0.5% (P < .001) and 1.3% (P = .038), respectively. Additionally, the relative abundance of Verrucomicrobia also decreased from 3.2% to 1.11E−3% (P = .034). In contrast, the relative abundances of Proteobacteria and Cyanobacteria increased (P < .001 and P = .003, respectively). At week 8, the relative abundances of all phyla restored to the levels at baseline. The relative abundances of all phyla at week 48 also did not significantly differ from those at baseline. During eradication therapy, 6 patients (55%) reported at least 1 adverse event. The relative abundance of phylum Proteobacteria in patients with adverse effects was more than that in patients without adverse effects (68.7% ± 8.8% vs 43.4% ± 25.5%; P = .048).
Conclusions
Bismuth quadruple therapy for H. pylori eradication can lead to short‐term dysbiosis of gut microbiota. The increase in Proteobacteria in gut microbiota may attribute to the development of adverse effects during bismuth quadruple therapy.
ABSTRACT
Background & Aims
Non‐selective β‐blockers (NSBBs) and endoscopic variceal‐ligation (EVL) have similar efficacy preventing first variceal bleeding. Compensated and decompensated cirrhosis ...are markedly different stages, which may impact treatment outcomes. We aimed to assess the efficacy of NSBBs vs EVL on survival in patients with high‐risk varices without previous bleeding, stratifying risk according to compensated/decompensated stage of cirrhosis.
Methods
By systematic review, we identified RCTs comparing NSBBs vs EVL, in monotherapy or combined, for primary bleeding prevention. We performed a competing‐risk, time‐to‐event meta‐analysis, using individual patient data (IPD) obtained from principal investigators of RCTs. Analyses were stratified according to previous decompensation of cirrhosis.
Results
Of 25 RCTs eligible, 14 failed to provide IPD and 11 were included, comprising 1400 patients (656 compensated, 744 decompensated), treated with NSBBs (N = 625), EVL (N = 546) or NSBB+EVL (N = 229). Baseline characteristics were similar between groups. Overall, mortality risk was similar with EVL vs. NSBBs (subdistribution hazard‐ratio (sHR) = 1.05, 95% CI = 0.75–1.49) and with EVL + NSBBs vs either monotherapy, with low heterogeneity (I2 = 28.7%). In compensated patients, mortality risk was higher with EVL vs NSBBs (sHR = 1.76, 95% CI = 1.11–2.77) and not significantly lower with NSBBs+EVL vs NSBBs, without heterogeneity (I2 = 0%). In decompensated patients, mortality risk was similar with EVL vs. NSBBs and with NSBBs+EVL vs. either monotherapy.
Conclusions
In patients with compensated cirrhosis and high‐risk varices on primary prophylaxis, NSBBs significantly improved survival vs EVL, with no additional benefit noted adding EVL to NSBBs. In decompensated patients, survival was similar with both therapies. The study suggests that NSBBs are preferable when advising preventive therapy in compensated patients.
Improving primary prophylaxis of bleeding by adapting therapy to clinical stage of cirrhosis.
Background and Aim
Concomitant therapy is a recommended first‐line treatment for Helicobacter pylori infection in most national or international consensuses. Reverse hybrid therapy is a modified ...14‐day concomitant therapy without clarithromycin and metronidazole in the final 7 days. This study aims to test whether 14‐day reverse hybrid therapy is non‐inferior to 14‐day concomitant therapy in the first‐line treatment of H. pylori infection.
Methods
Helicobacter pylori‐infected adult patients were randomly assigned to receive either reverse hybrid therapy (dexlansoprazole 60 mg o.d. plus amoxicillin 1 g b.d. for 14 days, and clarithromycin 500 mg plus metronidazole 500 mg b.d. for initial 7 days) or concomitant therapy (dexlansoprazole 60 mg once o.d. plus amoxicillin 1 g, clarithromycin 500 mg, and metronidazole 500 mg b.d. for 14 days). H. pylori status was assessed 6 weeks after the end of treatment.
Results
Helicobacter pylori‐infected participants (n = 248) were randomized to receive either 14‐day reverse hybrid therapy (n = 124) or 14‐day concomitant therapy (n = 124). Intention‐to‐treat analysis demonstrated that the two therapies had comparable eradication rate (95.2% vs 93.5%; 95% confidence interval, −4.0% to 7.4%; P = 0.582). However, reverse hybrid therapy had a much lower frequency of adverse events than concomitant therapy (20.2% vs 38.7%, P = 0.001). The two therapies exhibited comparable drug adherence (93.5% vs 87.9%, P = 0.125).
Conclusions
Fourteen‐day reverse hybrid therapy and 14‐day concomitant therapy are equivalent in efficacy for the first‐line treatment of H. pylori infection. However, reverse hybrid therapy has fewer adverse events compared with concomitant therapy.
Bismuth quadruple therapy is recommended as a first-line treatment for Helicobacter pylori infection in the United States but hybrid therapy is an alternative option. Reverse hybrid therapy (proton ...pump inhibitor plus amoxicillin for 14 days, and clarithromycin plus metronidazole for the initial 7 days) is a simplified hybrid treatment. We aimed to assess the efficacies of reverse hybrid therapy vs bismuth quadruple therapy as first-line treatments for patients with H pylori infection in a randomized trial.
In a prospective study, patients with H pylori infection were randomly assigned to groups that received either reverse hybrid therapy (n = 176) or a bismuth quadruple therapy (pantoprazole, bismuth, tetracycline, and metronidazole for 14 days; n = 176). Patients were examined the end of therapy for adverse events. The study was performed from August 2015 through February 2017. The primary outcome was cure of H pylori infection, determined based on a negative result from the urea breath test, or negative results from histologic analysis, the urease test, and bacterial culture analyses.
H pylori infection was eradicated from 96.6% of patients who received reverse hybrid therapy and 96.0% who received bismuth quadruple therapy-this difference was not significant in the intention-to-treat analysis (95% CI, 8.0% ∼ 2.2%; P = .281). There were no significant differences between therapies eradication of clarithromycin-resistant strains (88.2% with reverse hybrid therapy vs 92.3% with bismuth quadruple therapy) or metronidazole-resistant strains (100% vs 96.9%). However, reverse hybrid therapy was associated with fewer adverse events (18.7% of patients) than bismuth quadruple therapy (47.7%) (P < .001).
In a randomized trial, we found 14-day reverse hybrid therapy to not be inferior to bismuth quadruple therapy as a first-line treatment for H pylori infection. Reverse hybrid therapy was associated with fewer adverse events. ClincialTrials.gov no: NCT02547038.
Background and Aim
Carvedilol has been shown to be more effective than propranolol in decreasing portal pressure. Sufficient data from controlled trials remains limited. This trial compared the ...relative safety and efficacy between carvedilol and nadolol plus isosorbide mononitrate in preventing variceal rebleeding.
Methods
After successful control of acute esophageal variceal bleeding, eligible patients were randomized to the carvedilol group, 61 patients, using carvedilol 6.25–12.5 mg daily or the N + I group, 60 patients, using nadolol 40–80 mg plus isorsorbide‐5‐mononitrate 20 mg daily. The end points were rebleeding from varices, adverse events or death.
Results
After a median follow up of 30 months, recurrent upper gastrointestinal bleeding developed in 37 patients (61%) in the carvedilol group and 37 patients (62%) in the N + I group (P = 0.90). Recurrent bleeding from esophageal varices occurred in 31 patients (51%) in the carvedilol group and in 26 patients (43%) in the N + I group (P = 0.46). Recurrent bleeding from gastric varices occurred in two patients (3%) in the carvedilol group and in eight patients (13%) in the N + I group (P = 0.05). Severe adverse events occurred in one patient in the carvedilol group and 17 patients in the N + I group (P < 0.0001). Fifteen patients of the carvedilol group and 17 patients in the N + I group died (P = 0.83). Two patients in the carvedilol group and three patients in the N + I group died of variceal bleeding.
Conclusions
Carvedilol was as effective as nadolol plus isorsorbide‐5 ‐mononitrate mononitrate in the prevention of gastroesophageal variceal rebleeding with fewer severe adverse events and similar survival.
Background
Endoscopic therapy combined with vasoconstrictor was generally recommended to treat acute variceal bleeding. However, up to 30% of patients may still encounter treatment failure.
...Objectives
This trial was to evaluate the efficacy of combination with endoscopic variceal ligation (EVL) and proton pump inhibitor (PPI) infusion in patients with acute variceal bleeding.
Methods
Cirrhotic patients presenting with acute esophageal variceal bleeding were rescued by emergency EVL. Soon after arresting of bleeding varices, eligible subjects were randomized to two groups. Vasoconstrictor group received either somatostatin or terlipressin infusion. PPI group received either omeprazole or pantoprazole. End points were initial hemostasis, very early rebleeding rate, and adverse events.
Results
Sixty patients were enrolled in vasoconstrictor group and 58 patients in PPI group. Both groups were comparable in baseline data. Initial hemostasis was achieved in 98% in vasoconstrictor group and 100% in PPI group (P = 1.0). Very early rebleeding within 48–120 h occurred in one patient (2%) in vasoconstrictor group and one patient (2%) in the PPI group (P = 1.0). Treatment failure was 4% in vasoconstrictor group and 2% in PPI group (P = 0.95). Adverse events occurred in 33 patients (55%) in vasoconstrictor group and three patients (6%) in PPI group (P < 0.001). Two patients in vasoconstrictor group and one patient in PPI group encountered esophageal ulcer bleeding.
Conclusions
After successful control of acute variceal bleeding by EVL, adjuvant therapy with PPI infusion was similar to combination with vasoconstrictor infusion in terms of initial hemostasis, very early rebleeding rate, and associated with fewer adverse events.
The percentage of and factors associated with the regression of Barrett's esophagus (BE) or its characteristic intestinal metaplasia (IM) remain unclear, and conflicting results have been reported ...because of diverse regression and sampling error definitions. Thus, we investigated the rates of IM regression, sampling error, and associated factors.
Forty-two patients with proven short-segment BE with IM who underwent two follow-up endoscopies with biopsies of Barrett's mucosa were retrospectively analyzed. Additional Alcian blue and MUC2 staining were done on the biopsy specimens without IM in hematoxylin–eosin staining. Only patients with negative hematoxylin–eosin, Alcian blue, and MUC2 staining for IM in both follow-up endoscopies were considered to have true regression. When all three stains were negative for IM in the first, but positive in the second follow-up endoscopy, we considered IM persisting and declared sampling error.
Among the 18 patients without IM at the first follow-up endoscopy, only five (11.9%) were judged to have true regression. Prolonged proton-pump inhibitor use was significantly associated with regression. Limited experience of the endoscopist, and insufficient biopsy number were significantly related to sampling error. Receiver operating characteristic (ROC) curve analysis showed the best cut-off value of the biopsy number/maximal-length (cm) ratio to predict sampling error was 2.25.
In our patients with short-segment BE, 11.9% experienced regression of IM. Prolonged proton-pump inhibitors treatment was associated with regression. An insufficient biopsy number was related to a missed IM, which may be eliminated by maintaining biopsy number/maximal-length (cm) ratio ≥2.25.
Lethal pancreatitis has been reported after treatment for common bile duct stones using small endoscopic papillary balloon dilation.
We retrospectively evaluated the safety and efficacy of using ...large balloon dilation alone without the use of sphincterotomy for the treatment of large common bile duct stones in Kaohsiung Veterans General Hospital. Success rate of stone clearance, procedure-related adverse events and incidents, frequency of mechanical lithotripsy use, and recurrent stones were recorded.
A total of 247 patients were reviewed in the current study. The mean age of the patients was 71.2 years. Most of them had comorbidities. Mean stone size was 16.4 mm. Among the patients, 132 (53.4%) had an intact gallbladder and 121 (49%) had a juxtapapillary diverticulum. The mean size of dilating balloon used was 13.2 mm. The mean duration of the dilating procedure was 4.7 min. There were 39 (15.8%) patients required the help of mechanical lithotripsy while retrieving the stones. The final success rate of complete retrieval of stones was 92.7%. The rate of pancreatic duct enhancement was 26.7% (66/247). There were 3 (1.2%) adverse events and 6 (2.4%) intra-procedure bleeding incidents. All patients recovered completely after conservative and endoscopic treatment respectively, and no procedure-related mortality was noted. 172 patients had a follow-up duration of more than 6 months and among these, 25 patients had recurrent common bile duct stones. It was significantly correlated to the common bile duct size (p = 0.036)
Endoscopic papillary large balloon dilation alone is simple, safe, and effective in dealing with large common bile duct stones in relatively aged and debilitated patients.
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