摘要目的:探讨羔羊胃提取物维B12胶囊治疗慢性萎缩性胃炎的疗效和相关影响因素。方法:回顾性分析2016年10月1日至2021年4月30日空军军医大学西京医院消化内科就诊的240例慢性萎缩性胃炎患者，所有患者均使用羔羊胃提取物维B12胶囊规律治疗(110 U/次，3次/d)半年，并于治疗结束后行内镜检查和胃黏膜活体组织检查。通过比较治疗前后的胃炎评价系统(OLGA)和基于肠化生的胃炎评价系统(OLGIM)分期变化来评估治疗效果，分析影响药物疗效的相关因素。统计学方法采用多因素logistic回归分析。结果:治疗半年后，萎缩和肠化生的逆转有效率分别为45.4%(109/240)和37.9%(91/240)，总有效率为62.9%(151/240)；OLGA和OLGIM分期从高分期(Ⅲ~Ⅳ期)逆转为低分期(0~Ⅱ期)的有效率分别为53.4%(63/118)和54.5%(36/66)。多因素分析结果显示，女性、补充维生素(≥3次/周)、幽门螺杆菌阴性或根除成功和轻度炎症状态(炎症评分为1~2分)与羔羊胃提取物维B12胶囊疗效的提高相关(比值比＝1.798、3.730、2.817、4.631，95%可信区间1.055~3.064、1.197~11.627、1.171~6.779、1.480~14.493； P均<0.05)，大量食用腌制食品(≥3次/周)与羔羊胃提取物维B12胶囊疗效的降低相关(比值比＝0.384，95%可信区间0.200~0.740)。 结论:羔羊胃提取物维B12胶囊治疗对萎缩和肠化生具有较好的逆转作用，并可能降低慢性萎缩性胃炎患者的胃癌发病风险。

abstractsObjective:To investigate the efficacy and related factors of lamb′s tripe extract and vitamin B12 capsule (LTEVB12) in the treatment of chronic atrophic gastritis.Methods:From October 1st 2016 to April 30th 2021, 240 patients with chronic atrophic gastritis visited the Department of Gastroenterology at Xijing Hospital, Air Force Medical University were retrospectively analyzed. All patients regularly took LTEVB12 (110 U/day, 3 times/day) for six months. At the end of treatment, endoscopy and gastric mucosal biopsy were conducted. The therapeutic effects were evaluated by comparing the changes of operative link on gastritis assessment (OLGA) and operative link on gastritis assessment based on intestinal metaplasia (OLGIM) staging before and after treatment. The related factors affecting the efficacy of the drug were analyzed. Multivariate logistic regression analysis was used for statistical analysis.Results:After half a year of treatment, the reversal efficiency of atrophy and intestinal metaplasia was 45.4% (109/240) and 37.9% (91/240), respectively, and the total efficiency was 62.9% (151/240). The reversal efficiency of OLGA and OLGIM staging reversed from high stage (stage Ⅲ to Ⅳ) to low stage (stage 0 to Ⅱ) was 53.4% (63/118) and 54.5% (36/66), respectively. The results of multivariate analysis showed that female, vitamin supplementation (≥3 times/week), negative or successful eradication of Helicobacter pylori and mild inflammatory status (inflammation score: 1 to 2) were associated with improving the efficacy of LTEVB12 (odds ratio=1.798, 3.730, 2.817 and 4.631, 95% confidence interval 1.055 to 3.064, 1.197 to 11.627, 1.171 to 6.779, 1.480 to 14.493; all P<0.05). High consumption of pickled food (≥3 times/week) was associated with reducing efficacy of LTEVB12 (odds ratio=0.384, 95%confidence interval 0.200 to 0.740). Conclusion:LTEVB12 has better reversal therapeutic effect on atrophy and intestinal metaplasia, and may reduce the risk of gastric cancer in patients with chronic atrophic gastritis.