Eradication of H pylori infection in a rural population: One-day quadruple therapy versus 7-day triple therapy

瞄准：比较有标准 7-d 的四倍的治疗增加两倍的一天为在中国的一张农村人口的 H pylori 根除的治疗。方法：396 个病人与的一个总数(13 ) pylori 被分配进二的为 H 阳性的 C 脲呼吸测试组织：239 个病人收到了一天四倍的治疗(amoxicillin 2000 mg qid；灭滴灵 500 mg qid；枸橼酸铋 900 mg qid 和 lansoprazole 60 mg 从前每日) 并且 157 个病人收到了 7-d 标准三元组治疗(amoxicillin 1000 mg 出价；clarithromycin 500 mg 出价和 lansoprazole 30 mg 出价) 。所有病人经历了一(13 ) 六个星期估计 H pylori 感染的根除的 C-UBT 术后疗法。结果：229 个病人完成了一天治疗(95.8%) ， 148 个病人完成了 7-d 治疗(94.2%) 。一天治疗根除了在 64 个病人(27.95%) 的 H pylori 感染。相反， 103 个病人(69.59%) 是在 7-d 治疗以后否定的 H pylori (P 【 0.01 ) 。结论：这个预研项目建议与 7-d 标准治疗相比没有在 H pylori 感染的治疗的一天治疗的有益的效果。

Helicobacter pylori antibody responses in association with eradication outcome and recurrence： a population-based intervention trial with 7.3-year follow-up in China

Objective： To identify serum biomarkers that may predict the short or long term outcomes of anti-Helicobacter gylori （H. pylori） treatment, a follow-up study was performed based on an intervention trial in Linqu County, China. Methods： A total of 529 subjects were selected randomly from 1,803 participants to evaluate total anti-H, pylori immunoglobulin G （IgG） and 10 specific antibody levels before and after treatment at 1-, 2- and 7.3-year. The outcomes of anti-H, pylori treatment were also parallelly assessed by 13C-urea breath test at 45-d after treatment and 7.3-year at the end of follow-up. Results： We found the medians of anti-H, pylori IgG titers were consistently below cut-off value through 7.3 years in eradicated group, however, the medians declined in recurrence group to 1.2 at 1-year after treatment and slightly increased to 2.0 at 7.3-year. While the medians were significantly higher （〉3.0 at 2- and 7.3-year） among subjects who failed the eradication or received placebo. For specific antibody responses, baseline seropositivities of FliD and HpaA were reversely associated with eradication failure [for FIiD, odds ratio （OR）=0.44, 95% confidence interval （95% CI）： 0.27-0.73; for HpaA, OR=0.32, 95% Ch 0.I7-0.60]. The subjects with multiple positive specific antibodies at baseline were more likely to be successfully eradicated in a linear fashion （Ptrend=0.006）. Conclusions： Our study suggested that total anti-H, pylori IgG level may serve as a potential monitor of long- term impact on anti-H, pylori treatment, and priority for H. pylori treatment may be endowed to the subjects with multiple seropositive antibodies at baseline, especially for FliD and HapA.

Genetic Polymorphism of PSCA and Risk of Advanced Precancerous Gastric Lesions in a Chinese Population

Objective： To evaluate the relationship between the genetic polymorphism of prostate stem cell antigen （PSCA） and the risk of advanced precancerous gastric lesions including intestinal metaplasia（IM） and dysplasia（Dys）, a population-based study was conducted in Linqu County, a high-risk area of gastric cancer （GC） in China. Methods： The prevalence of gastric lesions including superficial gastritis（SG）, chronic atrophic gastritis（CAG）, IM and Dys was determined by histopathologic examination. The genotypes were determined by polymerase chain reaction-restriction fragment length polymorphism （PCR-RFLP） technique. The effects of PSCA genetic variant on the risks of IM and Dys were calculated by unconditional logistic regression. Results： Multivariate analysis revealed subjects carrying PSCA rs2294008 CT/TT genotype were associated with an increased risk of IM （OR=1.38, 95% CI=1.11-1.71） and Dys （OR=1.75, 95% CI=1.36-2.26）, especially for subjects with H.pylori infection （IM： OR=1.34, 95% CI=1.05-1.71; Dys： OR=1.82, 95% CI=1.37-2.42）. Furthermore, H. pylori infection and PSCA rs2294008 CT/TT genotype were observed to jointly elevate the risk of IM （OR=3.32, 95% CI=2.33-4.71） and Dys （OR=4.58, 95% CI=2.99-7.04）. Conclusion： This study suggested that PSCA rs2294008 might have an impact on the risk of IM or Dys among the high risk population of GC.

A STUDY OF PRECANCEROUS GASTRIC LESIONS IN A HIGH RISK POPULATION

A study of precancerous gastric lesion was conducted in a randomly selected high risk population in Linqu, Shandong Province of China. 849 subjects aged from 30-64 were examined bioptically. There were 8 cases of gastric cancer, the prevalence rate was 0.9%. 169 subjects were diagnosed to be dysplasia, the prevalence rate of dysplasia was increased significantly with age. The regression equation was Y=0.47X-0.25. The prevalence of CAG was found in 36 per cent of the studied subjects and both dysplasia and CAG were more serious in the antrum than the. fundus. The results showed a natural history of precancerous gastric lesions in a high risk population in a high risk area.

Effects of Helicobacter pylori eradication on the profiles of blood metabolites and their associations with the progression of gastric lesions: a prospective follow-up study

Objective:This study aimed at examining the alterations in metabolomic profiles caused by treatment of H.pylori infection,and the associations between key plasma metabolites and the risk of gastric lesion progression during follow-up after treatment.Methods:An intervention trial was performed in 183 participants,117 of whom were H.pylori positive participants receiving treatment for H.pylori infection.H.pylori positive participants were prospectively followed for 182 to 1,289 days.Untargeted metabolomics assays were conducted on plasma samples collected at baseline,6 months after treatment,and during continued follow-up.Results:We identified 59 metabolites with differential posttreatment changes between participants with successful and failed H.pylori eradication,17 metabolites significantly distinguished participants with successful vs.failed eradication.Two metabolites[PC(18:1(11Z)/14:1(9Z))and(2S)-6-amino-2-formamidohexanamide]showed posttreatment changes positively associated with successful H.pylori eradication,and were inversely associated with the risk of gastric lesion progression among participants with successful eradication.In contrast,9-decenoic acid showed posttreatment changes inversely associated with successful eradication:its level was positively associated with the risk of gastric lesion progression among participants with successful eradication.Although the identified metabolites showed a temporary but significant decline after treatment,the trend generally reversed during continued follow-up,and pretreatment levels were restored.Conclusions:Treatment of H.pylori infection significantly altered plasma metabolic profiles in the short term,and key metabolites were capable of distinguishing participants with successful vs.failed eradication,but might not substantially affect metabolic regulation in the long term.Several plasma metabolites were differentially associated with the risk of gastric lesion progression among participants with successful or failed eradication.

FACTORS INFLUENCING SERUM PEPSINOGEN LEVELS IN A CHINESE POPULATION AT HIGH RISK OF STOMACH CANCER

The relationships between serum pepsinogen (PG) levels and age, sex, ABO blood type, cigarette smoking and diet were studied among over 3, 000 residents selected at random in an area with high risk of stomach cancer in Shandong Province, China. Males had significantly higher median PG Ⅰ and Ⅱ levels than feamles. PG Ⅰ tended to decrease and PG Ⅱ to rise with age. Subjects with blood type A had a higher PG Ⅱ level than subjects with other blood types. Both PG Ⅰ and Ⅱ levels rose with dally consumption of cigarettes. Alcohol consumption was not related to PG levels. The PG Ⅰ/Ⅱ ratio declined with increasing consumption of sour pancakes, a fermented staple food found to contain N-nitroso compounds and to be a risk factor for stomach cancer in this population.

AGE AND SITES-SPECIFIC PREVALENCE RATES OF PRECANCEROUS GASTRIC LESIONS AT A HIGH-RISK POPULATION OF STOMACH CANCER

A population-based screening for stomach cancer (SC) and its precancerous lesions was conducted in Linqu County, Shandong, China, one of the highest SC rates found in China and the world. An analysis of precancerous stomach lesions revealed that chronic atrophic gastritis (CAG) was a universal common among people aged 35-64 (96-98%). For 52% and 20% of the residents in this age group had Intestinal metaplasia (IM) or dysplssia (DYS). These more advanced lesions were more pronounced in the antrum for both males and females. Age-specific prevalence rates in different anatomic locations sshowed that CAG, developed in the antrum, particularly along the lesser curvature earter than other sites and spread to fundus. IM and DYS accrued under the background of CAG with a leading time in the antrum than the other part of the stomach. Although CAG, IM and DYS prevalence rates were higher in the antrum than In the fundus, the prevalence rates showed a similar smoothly slope, a result of accumulated somatic geneticdamage, suggesting a similar biological response to the stimulation of initiator of carcinogenesis, promoter leading to progression to SC.

血清环状RNA表达与胃癌关系的探索性研究

目的分析血清中候选环状RNA表达与胃癌的关系,初步探索其是否具有胃癌早期诊断标志物的潜在应用价值。方法从山东省临朐县人民医院选取48例胃癌病例,并在同期胃镜筛查队列中选择年龄、性别匹配的48例对照。采用实时荧光定量PCR方法对血清中3个候选环状RNA(hsa_circ_002059、hsa_circ_0000096、hsa_circ_0001895)表达水平进行定量检测,并对胃癌组与对照组进行比较。结果胃癌病例中血清hsa_circ_002059、hsa_circ_0000096、hsa_circ_0001895表达阳性率分别为70.8%、47.9%、75.0%,略高于对照组(58.3%、31.3%、60.4%),差异均无统计学意义(均P>0.05)。血清中上述3个候选环状RNA表达水平M(P25~P75)在胃癌组中分别为1.60%(0~5.64%)、0(0~0.61%)、0.91%(0.06%~1.88%),在对照组中分别为0.05%(0~6.07%)、0(0~0.34%)、0.42%(0~1.39%)。多因素分析调整幽门螺杆菌感染、吸烟和饮酒状况后,3种候选环状RNA高表达与胃癌之间的关联强度呈上升趋势,差异无统计学意义(均P>0.05)。进一步将上述3种环状RNA进行组合,对其与胃癌的关系进行联合分析发现,与3种环状RNA均为阴性者相比,随着表达阳性环状RNA个数增加,与胃癌的关联强度呈上升趋势,趋势检验P=0.040。结论本研究初步提示hsa_circ_002059、hsa_circ_0000096、hsa_circ_0001895表达水平可能与胃癌相关。

2012-2018年山东临朐胃癌高发区胃癌早诊率及胃黏膜病变进展规律分析

目的胃癌是我国常见的恶性肿瘤之一,实施胃癌早诊早治项目被认为是提高胃癌早诊率、识别胃癌前病变的有效方式。本研究基于2012-2018年山东省临朐县早诊早治项目,分析胃癌早诊情况及随访人群胃黏膜病变进展规律,以期为胃癌高发区开展上消化道癌早诊早治项目提供参考。方法采用临朐县上消化道癌早诊早治项目筛查资料,将高级别上皮内瘤变及以上定义为胃癌,描述胃癌检出率和早诊率;首次筛检胃黏膜病变定义为基线胃黏膜病变,分析基线至末次随访胃黏膜病变进展至胃癌的人群分布特征,并通过Kaplan-Meier曲线描绘其进展规律。结果2012-2018年共筛检临朐胃癌高发区18 201人,胃癌检出率1.48%(95%CI为1.31~1.66),早诊率84.01%。筛检胃癌早诊率有逐年升高趋势。胃镜随访人群随访过程中胃癌检出率(2.40%,95%CI为1.88~3.06)和早诊率(100.00%)高于首次筛检时的胃癌检出率(1.32%,95%CI为1.15~1.51)和早诊率(79.13%),χ^2=15.65,P<0.001。临朐县胃癌好发部位依次为胃窦、胃角及胃体。对胃黏膜病变进展规律进行研究发现,男性进展至胃癌的风险是女性的4.70倍,χ^2=12.84,P<0.001。不同基线胃黏膜病变进展至胃癌的风险差异有统计学意义,χ^2=19.27,P=0.002。Kaplan-Meier曲线显示,低级别上皮内瘤变进展至胃癌的速度和累积风险要高于其他胃黏膜病变。结论临朐县开展的上消化道癌早诊早治项目显著提高了胃癌的早诊率。本研究揭示了高发区胃癌筛查效果、好发部位及胃黏膜病变进展规律,为高发区内镜筛查和人群随访提供了重要证据。