血清同型半胱氨酸及Hp感染对老年脑梗死的影响

目的探讨脑梗死与老年血管性痴呆是否受血清同型半胱氨酸及幽门螺杆菌（Hp）感染影响。方法选择我院2007年11月~2008年3月入院治疗并且符合标准,年龄≥60岁的老年患者,患有血管性痴呆及动脉硬化性、腔隙性脑梗死病例各38例为实验组的研究对象;选择我院同一时间段38例未患有以上疾病的、年龄≥60岁的老年患者为对照组。应用ELISA法检测对照组各研究对象的同型半胱氨酸水平和血清Hp-IgG水平,而载脂蛋白A、载脂蛋白B水平,三酰甘油、血清总胆固醇也需检测。检测时其他不必要因素应保持在相同水平。结果动脉硬化性脑梗死与老年血管性痴呆患者同型半胱氨酸、血清Hp-IgG、三酰甘油水平值比对照组患者明显增高,腔隙性脑梗死患者的检测值也高于对照组,各组与对照组比较差异有统计学意义（P〈0.05）。除三酰甘油水平以外,各组之间其他血脂水平和胆固醇水平均无差异（P〉0.05）。结论老年血管性痴呆及动脉硬化性脑梗死的发病率一定程度上受血清Hp-IgG与半胱氨酸水平的影响。     

含左氧氟沙星四联方案补救治疗幽门螺杆菌52伤临床分析

目的探讨含左氧氟沙星四联方案在补救治疗幽门螺杆菌中的应用价值。方法选择消化性溃疡及慢性萎缩性胃炎患者102例,分为观察组和对照组,观察组患者应用雷贝拉唑、左氧氟沙星、阿莫西林及胶体果胶铋,对照组患者应用雷贝拉唑、阿莫西林、胶体果胶铋,治疗周期为14d。结果治疗4周后,观察组中46例患者幽门螺杆菌阴性比例为88．5％。对照组中36例患者幽门螺杆菌阴性比例为72．0％,观察组患者幽门螺杆菌转阴率明显高于对照组（χ2=4．3820,P=0．0363）。两组患者不良反应发生率间差异无统计学意义（χ2=0．5725,P=0．4493）。结论含左氧氟沙星四联方案在补救治疗幽门螺杆菌中具有良好的效果。     

巢式PCR检测舌苔幽门螺杆菌临床研究

目的：幽门螺杆菌（H.pylori）是消化道疾病的常见致病菌,实验检测舌苔中是否存在H.pylori比较困难。利用巢式PCR检测舌苔幽门螺杆菌分布,并分析舌苔H.pylori与胃H.pylori的相关性。方法：用13C或14C尿素呼气试验（UBT）检测胃H.pylori;随机刮取80份舌苔样本,其中UBT阳性病人舌苔样本55份,UBT阴性病人舌苔样本25份,用巢式PCR检测舌苔H.pylori,以H.pylori的热休克蛋白HSP60基因为引物。结果 ：巢式PCR检测出44份的舌苔H.pylori感染为阳性;数据统计分析后,UBT阳性与PCR阳性的相关性较好（两组McNemar检验P=0.061〉0.05）。结论：胃H.pylori阳性的人群中,其舌苔感染H.pylori的可能性很大,舌苔是人体H.pylori的主要储存地,考虑为胃内H.pylori感染和复发的原因之一。     

幽门螺杆菌、AID、P53在胃部疾病组织中的表达及关系

目的探讨幽门螺杆菌（Hp）、胞嘧啶核苷脱氨酶（AID）、P53在胃部疾病组织中的表达及三者的关系。方法免疫组化法检测AID、P53蛋白及Hp。结果AID阳性例数在Hp感染的胃癌、慢性胃炎患者中的表达均高于未感染Hp者。在胃上皮瘤变患者中,Hp感染与未感染Hp者AID阳性例数无差异。P53在胃癌、上皮内瘤变组中表达的阳性例数均高于慢性胃炎。AID与P53在胃癌组织中表达呈正相关。结论胃黏膜Hp感染可能是AID高表达的因素之一,而AID的高表达可能会导致P53的蓄积,从而导致胃癌等胃部疾病的发生发展。幽门螺杆菌是胃癌等胃部疾病发生发展的重要原因。     

幽门螺杆菌与动脉粥样硬化

幽门螺杆菌（Helicobacter pylori,Hp）与慢性胃炎、消化性溃疡胃黏膜相关淋巴样组织淋巴瘤以及胃腺癌等胃肠疾病密切相关,近年来研究发现Hp亦可导致心脑血管疾病的发生,相应机制可能是通过促血管动脉粥样硬化形成,具体表现在促全身炎性反应、促代谢紊乱等方面,本文即从生物学特征以及致病机制两方面对Hp与动脉粥样硬化的关系作一综述。     

Determining Gastric Cancer-Related Risk Factors in Mongolian Population Using ABC(D) Method: A Matched Case-Control Study

Objective: We aimed to identify gastric cancer-related risk factors and evaluate the efficacy of screening ABC(D) method in determining high risk  gastric cancer individuals in Mongolian population. Methods: A total of 240 participants (120 gastric cancer patients and 120 healthy individuals) were included in this study. Data were collecting using a structured questionnaire consisting of 56 questions covering 5 categories. Serum Helicobacter pylori IgG (H. pylori IgG), pepsinogen I (PGI), and pepsinogen II (PGII) were tested in one third of all the participants (40 gastric cancer patients and 40 controls).  PGI, PGII, and H. pylori IgG levels were measured using GastroPanel enzyme-linked immunosorbent assay kit (Biohit, Helsinki, Finland). Results: Habits of having leftover meals (OR 2.22, 95%CI 1.27-3.86, p<0.01), daily consumption of tea with salt (OR 1.97, 95%CI 1.18-3.30, p<0.01), smoking on an empty stomach (OR 2.44, 95%CI 1.11-5.37, p<0.05), daily consumption of vegetables (OR 0.45, 95%CI 0.27-0.76, p<0.01), and daily consumption of fruit juice (OR 0.36, 95%CI 0.15-0.85, p<0.05), family history of gastric cancer (parents OR 2.88, 95%CI 1.07-7.78, p<0.05, siblings (OR 3.09, 95%CI 1.09-8.81, p<0.05), and history of gastric diseases (OR 3.65, 95%CI 2.10-6.35, p<0.0001) were identified as protective factors. A low PGI level (<35.25ng/ml) and low PGI/II ratio (<4) were associated with gastric cancer risk. According to ABC(D) method, groups C and D had higher proportion of gastric cancer cases than group A and B (group C, OR 7.50, 95%CI 1.20-47.05, p<0.05; group D, OR 8.3, 95%CI 1.33-51.26, p<0.05). Conclusion: Our findings suggested that gastric cancer risk was more closely related to eating habits, smoking, family history, and precancerous lesions. ABC(D) method seems to be a plausible alternative or supplementary method for stratifying patients at high risk of gastric cancer in this country.     

Trans-Lycopene and β-Cryptoxanthin Intake and Stomach Cancer in Vietnamese Men: A Pilot Case-Control Study

Objective: To examine the association between dietary intake of Trans-Lycopene and β-Cryptoxanthin and stomach cancer in Vietnamese men. Methods: A case-control study including 80 male incident stomach cancer cases and 146 male controls was performed in a general hospital in Viet Nam. A validated semi-quantitative food frequency (SQFFQ) and demographic lifestyle questionnaire were designed, and venous blood samples were collected to determine H. pylori status by IgG ELISA. Nutrient intake was converted using the data of SQFFQ and the Nutritive Composition Table of Vietnamese Foods, updated in 2019. The respective associations between Trans-Lycopene and β-Cryptoxanthin intake and stomach cancer were examined using unconditional logistic regression analysis with adjustments for possible cofactors. Results: Both Trans-Lycopene and β-Cryptoxanthin intake and stomach cancer showed a significantly inverse association, tertile-3 versus tertile-1, (OR = 0.15, 95%CI: 0.06–0.35, p trend = 0.00) and (OR = 0.34, 95%CI: 0.14–0.79, p trend = 0.02, respectively). For Trans-Lycopene intake stratifying by H. pylori status remained the benefit effect against stomach cancer among H. pylori-negative participants (OR = 0.15, 95%CI: 0.03–0.69, p trend = 0.02) and H. pylori-positive participants (OR = 0.13, 95%CI: 0.04–0.42, p trend = 0.00). Conclusions: Both Trans-Lycopene and β-Cryptoxanthin intake showed a strong protective effect against stomach cancer. The findings suggest that these two types of fat-soluble micronutrients would be considered as an anti-cancer therapy for both primary and secondary prevention.     

Impact of the microenvironment on the pathogenesis of mucosa-associated lymphoid tissue lymphomas

Approximately 8% of all non-Hodgkin lymphomas are extranodal marginal zone B cell lymphomas of mucosa-associated lymphoid tissue (MALT), also known as MALT lymphomas. These arise at a wide range of different extranodal sites, with most cases affecting the stomach, the lung, the ocular adnexa and the thyroid. The small intestine is involved in a lower percentage of cases. Lymphoma growth in the early stages is associated with long-lasting chronic inflammation provoked by bacterial infections (e.g., Helicobacter pylori or Chlamydia psittaci infections) or autoimmune conditions (e.g., Sjögren’s syndrome or Hashimoto thyroiditis). While these inflammatory processes trigger lymphoma cell proliferation and/or survival, they also shape the microenvironment. Thus, activated immune cells are actively recruited to the lymphoma, resulting in either direct lymphoma cell stimulation via surface receptor interactions and/or indirect lymphoma cell stimulation via secretion of soluble factors like cytokines. In addition, chronic inflammatory conditions cause the acquisition of genetic alterations resulting in autonomous lymphoma cell growth. Recently, novel agents targeting the microenvironment have been developed and clinically tested in MALT lymphomas as well as other lymphoid malignancies. In this review, we aim to describe the composition of the microenvironment of MALT lymphoma, the interaction of activated immune cells with lymphoma cells and novel therapeutic approaches in MALT lymphomas using immunomodulatory and/or microenvironment-targeting agents.     

幽门螺旋杆菌感染对症状性咽喉反流患者唾液胃蛋白酶浓度的影响

目的 探讨幽门螺旋杆菌(HP)感染对症状性咽喉反流(LPR)患者唾液胃蛋白酶浓度的影响。 方法 将咽部异物感、反复清嗓等非特异性症状为主诉的229例LPR初诊患者作为研究对象。应用¹⁴C呼气试验将所有LPR患者分为HP阳性组和HP阴性组,并分别给予HP根除治疗(三联疗法)与抑酸治疗。所有患者在初诊及治疗后复诊时均收集唾液样本(HP阳性者复诊时复查¹⁴C呼气试验),并比较治疗前后反流症状指数量表(reflux symptom index, RSI)、反流体征评分量表(reflux finding score, RFS)评分和唾液胃蛋白酶浓度变化。 结果 HP阳性的LPR患者其RSI及RFS总分与HP阴性者相比无显著差异(11.00 vs 9.00, P=0.077; 8.50 vs 9.00, P=0.415),但HP阳性者其声嘶(P=0.005)、烦人的咳嗽(P=0.016)等症状评分,声带水肿(P=0.002)体征评分及唾液胃蛋白酶浓度显著高于HP阴性者(94.90 μg/mL vs 45.28 μg/mL, P<0.001),且治疗后HP阳性的LPR患者RSI和RFS评分唾液胃蛋白酶浓度的下降程度均显著高于HP阴性者(P=0.012,P=0.019,P=0.013,P=0.027)。 结论 HP感染的LPR患者应用HP根除治疗后部分症状、体征评分和唾液胃蛋白酶浓度均显著下降,提示HP感染在LPR的发病过程中发挥重要作用。     

越南槐种子化学成分的分离与鉴定

目的:研究豆科苦参属越南槐Sophora tonkinensis种子的化学成分。方法:采用MCI树脂、正相硅胶色谱、凝胶柱色谱、半制备高效液相色谱法等方法进行分离纯化,通过理化性质、波谱数据结合参考文献鉴定化合物结构,并采用琼脂稀释法测定部分化合物的体外抗幽门螺杆菌活性。结果:从越南槐种子的甲醇提取物中共分离得到了22个化合物,分别鉴定为4′,7-二羟基-6-甲氧基异黄酮(1),黄豆苷元(2),5,7,4′三羟基-6-异戊烯基异黄酮(3),dalparvone(4),5,7-二羟基-4′-甲氧基异黄酮(5),樱黄素(6),芒柄花素(7),金雀异黄酮(8),5-methoxydaidzein(9),芒柄花苷(10),7,4′-二羟基黄酮(11),甘草素(12),bayin(13),2,4-二羟基苯甲酸甲酯(14),羟苯甲酯(15),4-hydroxyacetophenone(16),对甲氧基苯甲醛(17),吲哚-3-甲酸甲酯(18),4-[β-D-apiofuranoyl-(1→6)-O-β-D-glucopyranosyloxy]phenylacetonitrile(19),(-)-methyl dihydrophaseate(20),methyl canavaliol ester(21),vomifoliol 3′-O-β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside(22)。结论:化合物1,5,6,9,16为首次从该植物中分离得到,化合物4,14,17~22为首次从该属植物中分离得到。化合物10和13体外显示出了较好的抗幽门螺杆菌活性。