scholarly journals Influence of Cytochrome P450 2C19 Genotype on Helicobacter pylori Proton Pump Inhibitor-Amoxicillin-Clarithromycin Eradication Therapy: A Meta-Analysis

2021 ◽  
Vol 12 ◽  
Author(s):  
Yuko Morino ◽  
Mitsushige Sugimoto ◽  
Naoyoshi Nagata ◽  
Ryota Niikiura ◽  
Eri Iwata ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Cytochrome P450 ◽  
Proton Pump ◽  
Fixed Effects ◽  
Meta Analysis ◽  
Eradication Therapy ◽  
Fixed Effects Model ◽  
Cure Rate ◽  
Cytochrome P450 2C19 ◽  
Cure Rates

Background: Proton pump inhibitors (PPIs) are the first-line treatment for acid-related diseases. The pharmacokinetics and therapeutic efficacy of PPIs, however, are influenced by genetic factors such as variants in genes encoding drug-metabolizing enzymes (e.g., cytochrome P450 2C19 [CYP2C19]) and drug transporters. We performed a meta-analysis to evaluate the influence of CYP2C19 genotype and PPI class, PPI dose, treatment duration and clarithromycin dose on the cure rate of PPI-containing Helicobacter pylori eradication therapy.Methods: Randomized control trials (RCTs) investigating cure rates using a PPI-amoxicillin-clarithromycin regimen among different CYP2C19 genotypes through May 2021 were included.Results: A total of 25 studies (5,318 patients) were included. The overall eradication rate in the intention-to-treat analysis was 79.0% (3,689/4,669, 95% confidence interval [CI]: 77.8–80.2%), and that in CYP2C19 extensive metabolizers (EMs), intermediate metabolizer (IMs) and poor metabolizers (PMs) was 77.7% (1,137/1,464, 95% CI: 75.3–79.6%), 81.2% (1,498/1,844, 95% CI: 79.3–83.0%) and 86.8% (644/742, 95% CI: 83.9–88.9%), respectively. Meta-analysis showed that the relaTakashitive risk of failed eradication in CYP2C19 EMs compared with IMs and PMs was 1.21 (95% CI: 1.06–1.39, P = 0.006) and 1.57 (95% CI: 1.27–1.94, P < 0.001), respectively, in the fixed-effects model. The cure rate of omeprazole and lansoprazole-containing eradication regimens differed among CYP2C19 genotypes (P < 0.05), while that of rabeprazole and esomeprazole-containing regimens was similar.Conclusion: The cure rates of PPI-amoxicillin-clarithromycin H. pylori eradication regimen, especially those containing omeprazole and lansoprazole, differ among CYP2C19 genotypes. Therefore, selection of a second-generation PPI or tailored treatment may achieve higher eradication rates than first-generation PPI-amoxicillin-clarithromycin triple regimen.

Cytochrome P450 2C19 (CYP2C19) genotype status is not associated with cure rates of dual therapy with rabeprazole and amoxicillin for Helicobacter pylori

2001 ◽  
Vol 120 (5) ◽  
pp. A587 ◽  
Author(s):  
Masakatsu Uchihara ◽  
Namiki Izumi ◽  
Osamu Noguchi ◽  
Yasuhiro Asahina ◽  
Nobuhiko Kanazawa ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Cytochrome P450 ◽  
Dual Therapy ◽  
Cyp2c19 Genotype ◽  
Cytochrome P450 2C19 ◽  
Cure Rates

scholarly journals The Current Strategy of Helicobacter pylori Eradication

2021 ◽  
Vol 96 (1) ◽  
pp. 13-21
Author(s):  
Yong Hwan Kwon
Keyword(s):  
Helicobacter Pylori ◽  
Clinical Practice ◽  
Antimicrobial Resistance ◽  
Proton Pump Inhibitor ◽  
Proton Pump ◽  
Eradication Rate ◽  
Meta Analysis ◽  
Cure Rate ◽  
Helicobacter Pylori Eradication ◽  
H Pylori

Helicobacter pylori (H. pylori) is the main cause of most gastroduodenal diseases. Triple therapy including two antibiotics, amoxicillin and clarithromycin, and a proton pump inhibitor given for a week has been recommended as the treatment of choice since the revision of the Korean H. pylori Clinical Practice Guidelines in 2013. However, antimicrobial resistance significantly decreased the cure rate of H. pylori eradication to 63.9%. Thus, the new H. pylori treatment regimen would be needed to increase the eradication rate in Korea. Recently, the update of clinical practice guideline for treatment of H. pylori was developed by conducting a meta-analysis. In this review, the recommended H. pylori eradication regimen in current 2020 guideline will be discussed.

scholarly journals Effect of Drug Combination on Omeprazole Metabolism by Cytochrome P450 2C19 in Helicobacter pylori Eradication Therapy

2019 ◽  
Vol 67 (8) ◽  
pp. 810-815
Author(s):  
Tamer Z. Attia ◽  
Taku Yamashita ◽  
Hirofumi Tsujino ◽  
Sayed M. Derayea ◽  
Yasuo Tsutsumi ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Cytochrome P450 ◽  
Drug Combination ◽  
Eradication Therapy ◽  
Cytochrome P450 2C19

scholarly journals Role of Probiotics in Helicobacter pylori Eradication: Lessons from a Study of Lactobacillus reuteri Strains DSM 17938 and ATCC PTA 6475 (Gastrus®) and a Proton-Pump Inhibitor

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Maria Pina Dore ◽  
Stefano Bibbò ◽  
Giovanni Mario Pes ◽  
Ruggero Francavilla ◽  
David Y. Graham
Keyword(s):  
Helicobacter Pylori ◽  
Lactobacillus Reuteri ◽  
Eradication Therapy ◽  
Cure Rate ◽  
Double Blind ◽  
Antibiotics Use ◽  
Incremental Improvement ◽  
H Pylori ◽  
Meta Analyses ◽  
Cure Rates

Background. Meta-analyses involving >4000 subjects with probiotics added to antimicrobial Helicobacter pylori eradication therapy have reported a mean increase in the eradication rate of 12 to 14%. It is unclear how to translate that result into clinical practice. Aim. To evaluate whether administration of Lactobacillus reuteri plus a PPI without antibiotics would eradicate H. pylori infections. Methods. This was a double-blind placebo-controlled randomized 2-site study of L. reuteri (Gastrus®) at a dose of 2 × 108 CFU, 7 times per day, or matching placebo plus 20 mg pantoprazole b.i.d. for 4 weeks. Cure was defined by negative 13C-UBT, 4 weeks after therapy. Sample size required ≥50% cure rates for using probiotics as a clinically useful monotherapy. Results. Recruitment was halted after 56 subjects because of the low cure rate; there were 8 dropouts; 48 subjects completed therapy (71% women, average age 49 years). The cure rates per protocol were 3/24 (12.5%; 95% CI 2.6–32%) with L. reuteri vs. 1/24 (4.1%) with placebo. Side effects (most often diarrhea) occurred infrequently (in 5/28 vs. 3/28; active vs. placebo therapy) (P=0.53). Conclusion. L. reuteri plus a PPI therapy was unable to provide a clinically important rate of H. pylori eradication. The cure rate albeit low (12.5%) was essentially identical to that achieved when probiotics were added to antibiotic therapy. The incremental improvement was additive and independent of antimicrobial resistance or antibiotics use. Probiotics can reliably increase the cure rate to ≥90% only in regimens achieving cure rates of ∼80%. This trial is registered with NCT03404440.

scholarly journals Eradication Therapy Should Be Different for Dyspeptic Patients than for Ulcer Patients

2003 ◽  
Vol 17 (suppl b) ◽  
pp. 41B-45B ◽  
Author(s):  
Wink A de Boer
Keyword(s):  
Helicobacter Pylori ◽  
Peptic Ulcer ◽  
Eradication Therapy ◽  
Cure Rate ◽  
Ulcer Disease ◽  
Biological Explanation ◽  
Choice Of Treatment ◽  
H Pylori ◽  
Different Strains ◽  
Cure Rates

Physicians should try to achieve an optimal cure rate with their initialHelicobacter pylorieradication therapy. Most physicians use the same treatment in all their patients.H pyloriinfection in patients with peptic ulcer disease (PUD) is more likely to be cured than that in patients with functional dyspepsia (FD). Differences in cure rates of 5% to 15% are usually reported, which is considered to be clinically relevant. A plausible biological explanation for this finding suggests that different strains (virulent [cagA+,vacAtype s1] compared with nonvirulent strains [cagA–,vacAtype s2]) in PUD and FD induce different changes in the gastric mucosa, and this facilitates or impairs antimicrobial efficacy. Physicians should be aware that most published treatment studies have included only PUD patients. This means that in clinical practice cure rates obtained in patients with FD or perhaps uninvestigated dyspepsia are usually lower than those reported in the literature. This has implications for the choice of treatment. Physicians should consider prolonging the duration of initialHelicobactereradication therapy from seven to 10 to 14 days in patients without ulcers.

scholarly journals Association of Helicobacter pylori vacA genotypes and peptic ulcer in Iranian population: a systematic review and meta-analysis

2020 ◽  
Author(s):  
Masoud Keikha ◽  
Mohammad Ali-Hassanzadeh ◽  
Mohsen Karbalaei
Keyword(s):  
Helicobacter Pylori ◽  
Peptic Ulcer ◽  
Fixed Effects ◽  
Meta Analysis ◽  
Etiologic Agent ◽  
Iranian Population ◽  
Fixed Effects Model ◽  
Version 2.0 ◽  
Digestive Disorders ◽  
Q Statistic

Abstract Background Helicobacter pylori is accounted as the most etiologic agent for digestive disorders, in particular, the most important of them i.e. peptic ulcer and gastric cancer. In the recent years, association of vacA genotypes and gastrointestinal disorders has attracted a lot of attention. In present study, we assessed the correlation between vacA genotypes (s1, s2, m1, m2, s1m1, s1m2, s2m1 and s2m2) and development to peptic ulcer in Iranian population. Methods In our study, first, 23 original articles containing of information of 3328 patients were evaluated. Statistical analysis was done by Comprehensive Meta-Analysis version 2.0 software (Biostat, Englewood, NJ, USA). In this regards, we used from fixed-effects model for analysis of data with low heterogeneity, while for analysis of data with high heterogeneity (I2 statistic index > 25%, Cochrane Q statistic p value < 0.05), random-effects model was used. Results Abundance of each of s1, s2, m1, m2, s1m1, s1m2, s2m1, and s2m2 was estimated 36.24%, 28.32%, 42.90% 29.86%, 27.88%, 32.34%, 15.70%, and 25.94%, respectively. According to the results, the m1, s1, and s1m2 genotypes were among the most prevalent genotypes among the Iranian patients, whereas, s2m1 genotype had the lowest frequency. Conclusions Finally, we demonstrated that there is a significant relationship between infection of stomach with m1, s1m1, and s2m1 genotypes and development to peptic ulcer.

scholarly journals Effectiveness and Safety of Vonoprazan versus Proton Pump Inhibitors for Second-Line Helicobacter pylori Eradication Therapy: Systematic Review and Meta-Analysis

Digestion ◽  
2020 ◽  
pp. 1-7 ◽  
Author(s):  
Satoshi Shinozaki ◽  
Yasutoshi Kobayashi ◽  
Hiroyuki Osawa ◽  
Hirotsugu Sakamoto ◽  
Yoshikazu Hayashi ◽  
...  
Keyword(s):  
Systematic Review ◽  
Helicobacter Pylori ◽  
Proton Pump Inhibitors ◽  
Proton Pump ◽  
Meta Analysis ◽  
Eradication Therapy ◽  
Second Line

A Systematic Review and Meta-Analysis about the Effect of Bisphosphonates on the Risk of Skeletal-Related Event in Men with Prostate Cancer

2020 ◽  
Vol 20 (13) ◽  
pp. 1604-1612
Author(s):  
Congcong Wu ◽  
Hua Jiang ◽  
Jianghua Chen
Keyword(s):  
Prostate Cancer ◽  
Fixed Effects ◽  
Data Extraction ◽  
Controlled Trial ◽  
Meta Analysis ◽  
Control Group ◽  
Fixed Effects Model ◽  
Related Event ◽  
Mineral Density ◽  
Skeletal Related Event

Background: Although the adjuvant therapy of bisphosphonates in prostate cancer is effective in improving bone mineral density, it is still uncertain whether bisphosphonates could decrease the risk of Skeletal- Related Event (SRE) in patients with prostate cancer. We reviewed and analyzed the effect of different types of bisphosphonates on the risk of SRE, defined as pathological fracture, spinal cord compression, radiation therapy to the bone, surgery to bone, hypercalcemia, bone pain, or death as a result of prostate cancer. Methods: A systemic literature search was conducted on PubMed and related bibliographies. The emphasis during data extraction was laid on the Hazard Ratio (HR) and the corresponding 95% Confidence Interval (CI) from every eligible Randomized Controlled Trial (RCT). HR was pooled with the fixed effects model, and preplanned subgroup analyses were performed. Results: 5 RCTs (n = 4651) were included and analyzed finally after screening 51 articles. The meta-analysis of all participants showed no significant decrease in the risk of SRE when adding bisphosphonates to control group (HR = 0.968, 95% CI = 0.874 - 1.072, p = 0.536) with low heterogeneity (I2 = 0.0% (d.f. = 4) p = 0.679). There was no significant improvement on SRE neither in the subgroups with Metastases (M1) or Castration-Sensitive Prostate Cancer (CSPC) (respectively HR = 0.968, 95% CI = 0.874 - 1.072, p = 0.536, I2 = 0.0% (d.f. = 4) p = 0.679; HR = 0.954, 95% CI = 0.837 - 1.088, p = 0.484, I2 = 0.0% (d.f. = 3) p = 0.534). Conclusion: Our study demonstrated that bisphosphonates could not statistically significantly reduce the risk of SRE in patients with prostate cancer, neither in the subgroups with M1 or CSPC.

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