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| 1 | OPTICAL PROPERTIES OF GeO_2 AND Ge NANOCRYSTALS显示文摘he co m pound m aterial of n m size particles Ge O2 Si O2 w as synthesied through hydrolysis of Si( O C2 H4) and Ge Cl4 . A heat treatm ent w as carried out for the sa m ples at 100 ~1200 ℃in air . Its optical property w as deter mined by U V Vis spectur m . We have found that theabsorption edge of spectru m shifted progressively to longer w avelengths . The quantu m size ef fect of nanocrystals appears because crystals gro w and energy of optical band gap reduces d ueto the influence of te m perature . By the analysis of X ray diffraction w e have observed theprocess in w hich the structure of particles changed fro m disorder into order . | Y.H.Zhou 1) ,Y.Y.Feng 2) and H.Y.Lu 2) 1)Department of Physics Nanjing Normal University, Nanjing 210097,China 2)Physics and Ch寁O P T I C A L P R O P E R T I E S O F Ge O2 A N D Ge N A N O C R Y S T A L S Y. H. Zhou1) , Y. Y. Feng2) | 1999 | Acta Metallurgica Sinica(English Letters)1999，12，5： | 22 |
| 2 | 世界卫生组织(WHO)造血与淋巴组织肿瘤分类方案:临床顾问委员会会议报告显示文摘引言 :从 1995年开始 ,欧洲病理学工作者协会和血液病理学会一直致力于制定一个新的世界卫生组织 (WHO)血液恶性肿瘤分类方案 ,该分类方案包括淋巴系肿瘤、髓系肿瘤、组织细胞肿瘤和肥大细胞肿瘤。 材料与方法 :此项 WHO计划共组成十个病理学工作者委员会 ,负责确定病种和作出定义。另外还成立一个由国际血液学家和肿瘤学家组成的临床顾问委员会 (CAC)以保证该分类的临床实用性。 1997年 11月召开会议讨论了与该分类有关的临床问题。 结果 :WHO采纳了 1994年国际淋巴瘤研究组 (IL SG)报告的修订欧美淋巴系肿瘤分类 (REAL)方案作为淋巴系肿瘤的分类方案。该方案的分类方法遵循以下原则 :分类应是联合应用形态学、免疫表型、遗传特征及临床特征能够清楚界定的“真实存在”(“real”)病种的名录 ,上述各项特征的相对重要性因病种不同而异 ,不存在任何“金标准”。 WHO将 REAL分类原则延用于髓系肿瘤和组织细胞肿瘤 ,髓系肿瘤的分类包括联合应用细胞形态学和细胞遗传学异常能够界定的各个病种。围绕一系列临床问题召集的这次 CAC会议 ,就提交的大多数问题达成共识 ,这些问题及共识将详述于下。对于另外一些问题 ,CAC认为淋巴系肿瘤临床分组既无必要也不必需 ,患者的治疗取决于淋巴瘤的具体类型 ,如有? | N L Harris E S Jaffe J Diebold G Flandrin H K Muller-Hermelink J Vardiman T A Lister C D Bloomfield 张凤奎 郝玉书 | 2001 | 白血病.淋巴瘤2001，10，3： | 20 |
| 3 | 涡轮叶栅前缘上游端壁气膜冷却的流场实验研究显示文摘对前缘上游端壁有单排和双排孔冷却的大尺寸低速涡轮导向叶栅进行了气动测量、热示踪和端壁流场显示 ,在吹风比 1~ 3范围获得了叶栅内的详细流场、冷气的空间分布和端壁上的流动图案。结合先前测得的没有冷却时的流场数据 ,这些结果表明端壁气膜冷却对叶栅流场结构有重大影响 ,吹风比是主宰射流与二次流间相互作用的主要因素 ,双排孔喷射使冷气比单排孔喷射更贴近端壁。低吹风比喷射冷气不能到达压力面并被二次流逐渐卷离端壁 ;中吹风比喷射有效的抑制了二次流的形成 ,并使端壁流线偏向于无粘流流线 ,冷气很均匀的覆盖在端壁上 ;高吹风比喷射可将冷气抛射到压力面上 ,双排孔情况下甚至使二次流反向 。 | 刘高文 刘松龄 许都纯 Lapw orth B L Forest A E | 2001 | 航空动力学报2001，16，2： | 20 |
| 4 | 不同品种蓝莓提取物抗氧化作用的研究显示文摘本实验以蓝莓甲醇提取物为研究对象,在测定其提取物中总酚酸含量的基础上,利用体外法研究了蓝莓提取物的对DPPH自由基的抑制作用以及对超氧阴离子自由基的清除作用。结果表明,四个品种的蓝莓甲醇提取物均有显著的抗氧化性,呈剂量效应关系,酚酸含量、抗氧化能力之间呈正相关。 | 孙波 BEKHIT A E D 王坤波 MSAON S L | 2007 | 食品科学2007，28，10： | 19 |
| 5 | 下肢浅静脉治疗术后的加压疗法:美国静脉论坛血管、外科学会、美国静脉学会、血管医学学会和国际静脉联盟的临床实践指南显示文摘一、指南的由来下肢浅静脉治疗术后应用压力治疗的方式是几代血管外科医师多年临床经验积累所得,现主要应用于大隐静脉剥脱术、下肢静脉点状剥脱术及静脉硬化治疗等。目前单就静脉硬化治疗而言,术后压力治疗的推荐也是基于相关文献及实验验证[1],但对于其他术式,尤其是对于大隐静脉的热消融术,目前还没有形成规范统一的建议,这也使得当前的压力治疗具有很大的临床差异性。 | Lurie F Lal BK Antignani PL Blebea J Bush R Caprini J Davies A Forrestal M Jacobowitz G Kalodiki E Killewich L Lohr J Ma H Mosti G Partsch H Rooke T Wakefield T 李丹(译) 陈程浩(译) 牛传强(译) 张靖(译) 黄建忠(译) | 2020 | 中华介入放射学电子杂志2020，8，4： | 16 |
| 6 | Design of 16S rRNA gene primers for 454 pyrosequencing of the human foregut microbiome显示文摘AIM:To design and validate broad-range 16S rRNA primers for use in high throughput sequencing to classify bacteria isolated from the human foregut microbiome.METHODS:A foregut microbiome dataset was constructed using 16S rRNA gene sequences obtained from oral,esophageal,and gastric microbiomes produced by Sanger sequencing in previous studies represented by 219 bacterial species.Candidate primers evaluated were from the European rRNA database.To assess the effect of sequence length on accuracy of classification,16S rRNA genes of various lengths were created by trimming the full length sequences.Sequences spanning various hypervariable regions were selected to simulate the amplicons that would be obtained using possible primer pairs.The sequences were compared with full length 16S rRNA genes for accuracy in taxonomic classification using online software at the Ribosomal Database Project (RDP).The universality of the primer set was evaluated using the RDP 16S rRNA database which is comprised of 433 306 16S rRNA genes,represented by 36 phyla.RESULTS:Truncation to 100 nucleotides(nt)downstream from the position corresponding to base 28 in the Escherichia coli 16S rRNA gene caused misclassification of 87(39.7%)of the 219 sequences,compared with misclassification of only 29(13.2%)sequences with truncation to 350 nt.Among 350-nt sequence reads within various regions of the 16S rRNA gene,the reverse read of an amplicon generated using the 343F/798R primers had the least(8.2%)effect on classification.In comparison,truncation to 900 nt mimicking single pass Sanger reads misclassified 5.0%of the 219 sequences.The 343F/798R amplicon accurately assigned 91.8%of the 219 sequences at the species level.Weighted by abundance of the species in the esophageal dataset,the 343F/798R amplicon yielded similar classification accuracy without a significant loss in species coverage(92%).Modification of the 343F/798R primers to 347F/803R increased their universality among foregut species.Assuming that a typicalpolymerase chain reaction can tolerate 2 mismatches between a primer and a template,the modified 347F and 803R primers should be able to anneal 98%and 99.6%of all 16S rRNA genes in the RDP database.CONCLUSION:347F/803R is the most suitable pair of primers for classification of foregut 16S rRNA genes but also possess universality suitable for analyses of other complex microbiomes. | Carlos W Nossa William E Oberdorf Jφrn A Aas Bruce J Paster Todd Z DeSantis Eoin L Brodie Daniel Malamud Michael A Poles Zhiheng Pei | 2010 | World Journal of Gastroenterology2010，16，33： | 16 |
| 7 | 涡轮叶栅前缘上游端壁气膜冷却的传热实验研究显示文摘对前缘上游有单排和双排孔冷却的涡轮导向叶栅端壁进行了详细的传热实验 ,在吹风比 1 ,2 ,3下获得了当地气膜冷却效率和换热系数 ,结合流场测量结果分析了端壁冷却和换热规律。结果表明端壁气膜冷却在很大程度上受二次流的影响 ,冷却效果主要由吹风比决定 ,低吹风比喷射时 ,压力面附近的一个三角形区域没有冷气的覆盖 ,中、高吹风比喷射可以大幅度提高平均冷却效率并使冷气很均匀的覆盖在端壁上 ,双排孔喷射比单排孔喷射平均效率提高 1倍左右。结果还表明尽管冷气喷射使端壁换热系数随吹风比的增大而显著增大 ,气膜冷却还是能有效的降低端壁的热负荷 ,其中以中吹风比双排孔喷射的效果最为显著。 | 刘高文 刘松龄 朱惠人 Lapworth B L Forest A E | 2001 | 航空动力学报2001，16，3： | 15 |
| 8 | Chronic constipation in hemiplegic patients显示文摘AIM: To assess the prevalence of bowel dysfunction in hemiplegic patients, and its relationship with the site of neurological lesion, physical immobilization and pharmacotherapy. METHODS: Ninety consecutive hemiplegic patients and 81 consecutive orthopedic patients were investigated during physical motor rehabilitation in the same period, in the same center and on the same diet. All subjects were interviewed ≥ 3 mo after injury using a questionnaire inquiring about bowel habits before injury and at the time of the interview. Patients’ mobility was evaluated by the Adapted Patient Evaluation Conference System. Drugs considered for the analysis were nitrates, angiogenic converting enzyme (ACE) inhibitors, calcium antagonists, anticoagulants, antithrombotics, antidepressants, anti-epileptics. RESULTS: Mobility scores were similar in the two groups. De novo constipation (OR = 5.36) was a frequent outcome of the neurological accident. Hemiplegics showed an increased risk of straining at stool (OR: 4.33), reduced call to evacuate (OR: 4.13), sensation of incomplete evacuation (OR: 3.69), use of laxatives (OR: 3.75). Logistic regression model showed that constipation was significantly and independently associated with hemiplegia. A positive association was found between constipation and use of nitrates and antithrombotics in both groups. Constipation was not related to the site of brain injury. CONCLUSION: Chronic constipation is a possible outcome of cerebrovascular accidents occurring in 30% of neurologically stabilized hemiplegic patients. Its onset after a cerebrovascular accident appears to be independent from the injured brain hemisphere, and unrelated to physical inactivity. Pharmacological treatment with nitrates and antithrombotics may represent an independent risk factor for developing chronic constipation. | F Bracci D Badiali P Pezzotti G Scivoletto U Fuoco L Di Lucente A Petrelli E Corazziari | 2007 | World Journal of Gastroenterology2007，13，29： | 15 |
| 9 | 癌胚蛋白Glypican-3鉴别卵黄囊瘤与卵巢透明细胞癌显示文摘 | Esheba G E Pate L L Longacre T A 郎志强(摘译) | 2008 | 临床与实验病理学杂志2008，24，5： | 13 |
| 10 | 长期食用含糖和人工甜味剂的饮料与美国成年人死亡风险的关系显示文摘摄入含糖饮料(sugar-sweetened beverages,SSB)或含人工甜味剂饮料(artificially sweetened beverages,ASB)是否与死亡风险相关,这关乎公共卫生利益。研究者分析了卫生专业人员随访研究(1986-2014年)中男性37 716人和护士健康研究(1980-2014年)中女性80 647人(基线无慢性病)的SSB和ASB的消费与总死亡率和病因特异性死亡率之间的关系。应用Cox比例风险回归估计风险比和95%CI。结果显示,在随访3415564人年期间,研究者记录了36436例死亡,其中心血管病死亡7896例,癌症死亡12380例。 | 刘青(译) 叶鹏(摘、审校) Malik VS Li Y Pan A De Koning L Schernhammer E Willett WC Hu FB | 2019 | 中华高血压杂志2019，27，5： | 9 |
| 11 | 酒精摄入、心脏生物标志物和心房颤动风险与不良结局显示文摘酒精摄入和新发心房颤动相关性证据不一,尤其是在低剂量下。该研究评估欧洲队列在整个饮酒范围内酒精摄入、生物标志物和新发心房颤动的关系。方法和结果:在一个以社区为基础的汇集队列中,研究者随访107845人,以评估酒精摄入(酒精种类和饮酒方式)与新发心房颤动的关系。研究者收集经典心血管病危险因素和新发心力衰竭的信息,并检测生物标记物氨基末端脑钠肽前体和高敏肌钙蛋白I。 | 陈嘉睿(译) 练桂丽((审校) Csengeri D Sprünker NA Di Castelnuovo A Niiranen T Vishram-Nielsen JK Costanzo S S derberg S Jensen SM Vartiainen E Donati MB Magnussen C Camen S Gianfagna F L chen ML Kee F Kontto J Mathiesen EB Koenig W Stefan B de Gaetano G J rgensen T Kuulasmaa K Zeller T Salomaa V Iacoviello L Schnabel RB | 2021 | 中华高血压杂志2021，29，2： | 9 |
| 12 | Leukemia:研究鉴定出与34种AML白血病亚群相关联的基因突变显示文摘针对成年急性髓细胞白血病(acute myeloid leukemia,AML)患者的一项新的大型研究将80种癌症相关基因突变与5种AML亚型相关联。这5种AML亚型可通过特异性的染色体异常加以确定。在未来,这些发现可能有助指导基因突变测试和治疗决策。 | A-K Eisfeld K Mrózek J Kohlschmidt D Nicolet S Orwick C J Walker K W Kroll J S Blachly A J Carroll J E Kolitz B L Powell E S Wang R M Stone A de la Chapelle J C Byrd C D Bloomfield | 2017 | 现代生物医学进展2017，17，15： | 7 |
| 13 | Cardiometabolic health among gastric bypass surgery patients with polycystic ovarian syndrome显示文摘AIM:To examine the effect of gastric bypass surgery on cardiometabolic health among women with polycystic ovarian syndrome(PCOS).METHODS:Retrospective medical chart review identified women(n = 389) with PCOS who underwent Roux-en-Y gastric bypass surgery from 2001-2009 in one surgical practice.Separate repeated measures linear mixed models were fit using the MIXED procedureto assess mean change in cardiometabolic disease risk factors from before to 1-year after surgery and were evaluated by ethnicity [Hispanic,non-Hispanic black(NHB) and white(NHW)].RESULTS:The majority of the sample was Hispanic(66%,25% NHB,9% NHW).Mean body mass index significantly improved 1 year post-surgery for all ethnic groups(45.5 to 35.5 kg/m2 for Hispanics,46.8 to 37.7 kg/m2 for NHB and 45.7 to 36.7 kg/m2 for NHW,P < 0.001).Among Hispanic women mean total cholesterol(198.1 to 160.2 mg/dL),low-density lipoproteins(LDL) cholesterol(120.9 to 91.0 mg/dL),triglycerides(148.6 to 104.8 mg/dL),hemoglobin A1c(6.2% to 5.6%),alanine aminotransferase(28.1 to 23.0 U/L) and aspartate aminotransferase(23.5 to 21.6 U/L) decreased significantly(P < 0.001).Among NHB,mean total cholesterol(184.5 to 154.7 mg/dL),LDL cholesterol(111.7 to 88.9 mg/dL) and triglycerides(99.7 to 70.0 mg/dL) decreased significantly(P < 0.05).Among NHW,mean total cholesterol(200.9 to 172.8 mg/dL) and LDL cholesterol(124.2 to 96.6 mg/dL),decreased significantly(P < 0.05).Pairwise ethnic group comparisons of all cardiometabolic outcomes adjusted for age and type of surgery before and 1 year after surgery showed no statistical difference between the three groups for any outcome.CONCLUSION:Cardiometabolic disease risk improvements vary by ethnicity and obesity may impact glucose tolerance and liver function changes more in Hispanic women with PCOS vs non-Hispanic women. | Carley A Gomez-Meade Adriana Carrillo Gabriela Lopez-Mitnik Sarah E Messiah Kristopher L Arheart Nestor de la Cruz-Muoz | 2013 | World Journal of Diabetes2013，4，3： | 6 |
| 14 | Osteoprotegerin: A Novel Secreted Protein Involved in the Regulation of Bone Density显示文摘 | W.S Simonet D.L Lacey C.R Dunstan M Kelley M.-S Chang R Lüthy H.Q Nguyen S Wooden L Bennett T Boone G Shimamoto M DeRose R Elliott A Colombero H.-L Tan G Trail J Sullivan E Davy N Bucay L Renshaw-Gegg T.M Hughes D Hill W Pattison P Campbell S Sander G Van | 1997 | Cell1997，，2： | 6 |
| 15 | 急性冠状动脉综合征发生1个月后的生长分化因子15水平与主要出血风险增加相关显示文摘用双重抗血小板治疗的急性冠状动脉综合征(acutecoronarysyndromes,ACS)患者在初次就诊测量的生长分化因子15(growthdifferentiationfactor-15,GDF-15)与大出血相关。 | Lindholm D Hagstrm E James SK Becker RC Cannon CP Himmelmann A Katus HA Maurer G López-Sendón JL Steg PG Storey RF Siegbahn A Wallentin L 刘莉 叶鹏 | 2017 | 中华高血压杂志2017，25，5： | 5 |
| 16 | Selective sphincteroplasty of the papilla in cases at risk due to atypical anatomy显示文摘AIM: To analyze the indications, effi cacy and safety of sphincteroplasty in our centre. METHODS: A retrospective study of sphincteroplasty in 53 cases of papilla at high risk was performed in 2004-2006. The procedure consisted of duodenoscopy with Olympus TJF 145 Videoduodenoscope, approach to the biliary tract using a catheter with a guidewire, and dilatation of the papilla with a dilatation balloon catheter using a syringe with a manometer for control of the fi lling pressure. RESULTS: The indications included intradiverticular papilla in 26 patients (49/), stenosis of a previous sphincterotomy in 19 patients (35.8/), small size of the papilla in 4 patients (7.5/), Billroth Ⅱ gastrectomy in 3 patients (5.6/), and coagulopathy in one patient (1.9/). The efficacy was 97.8/, with all the calculi extracted from the common bile duct in 84.4/ of the patients, even though 21 of the patients (39.6/) had calculi with a diameter equal to or greater than 10 mm. Seven patients (13.2/) presented complications: haemorrhage in 1 patient (1.9/) and mild pancreatitis in 6 patients (11.3/). The mean hospital stay in case of complications was of 3 ± 0.63 d. CONCLUSION: Sphincteroplasty is highly effective, with a complication rate similar to that of sphincterotomy, furthermore, the complications are of low clinical importance. The use of the 10 mm balloon makes it possible to extract calculi with a diameter of over 15 mm and to extract more than 3 calculi without increasing the rate of complications and reduces the need to resort tolithotripsy or rescue sphincterotomy. | F Mugica G Urdapilleta A Castiella A Berbiela F Alzate E Zapata L Zubiaurre P Lopez JI Arenas | 2007 | World Journal of Gastroenterology2007，13，22： | 5 |
| 17 | Colonoscopy surveillance for high risk polyps does not always prevent colorectal cancer显示文摘AIM To determine the frequency and risk factors for colorectal cancer(CRC) development among individuals with resected advanced adenoma(AA)/traditional serrated adenoma(TSA)/advanced sessile serrated adenoma(ASSA). METHODS Data was collected from medical records of 14663 subjects found to have AA, TSA, or ASSA at screening or surveillance colonoscopy. Patients with inflammatory bowel disease or known genetic predisposition for CRC were excluded from the study. Factors associated with CRC developing after endoscopic management of high risk polyps were calculated in 4610 such patients who had at least one surveillance colonoscopy within 10 years following the original polypectomy of the incident advanced polyp. RESULTS84/4610(1.8%) patients developed CRC at the polypectomy site within a median of 4.2 years(mean 4.89 years), and 1.2%(54/4610) developed CRC in a region distinct from the AA/TSA/ASSA resection site within a median of 5.1 years(mean 6.67 years). Approximately, 30%(25/84) of patients who developed CRC at the AA/TSA/ASSA site and 27.8%(15/54) of patients who developed CRC at another site had colonoscopy at recommended surveillance intervals. Increasing age; polyp size; male sex; right-sided location; high degree of dysplasia; higher number of polyps resected; and piecemeal removal were associated with an increased risk for CRC developmentat the same site as the index polyp. Increasing age; right-sided location; higher number of polyps resected and sessile endoscopic appearance of the index AA/TSA/ASSA were significantly associated with an increased risk for CRC development at a different site. CONCLUSION Recognition that CRC may develop following AA/TSA/ASSA removal is one step toward improving our practice efficiency and preventing a portion of CRC related morbidity and mortality. | Mohamad A Mouchli Lidia Ouk Marianne R Scheitel Alisha P Chaudhry Donna Felmlee-Devine Diane E Grill Shahrooz Rashtak Panwen Wang Junwen Wang Rajeev Chaudhry Thomas C Smyrk Ann L Oberg Brooke R Druliner Lisa A Boardman | 2018 | World Journal of Gastroenterology2018，24，8： | 5 |
| 18 | Cementomimetics——constructing a cementum-like biomineralized microlayer via amelogenin-derived peptides显示文摘Cementum is the outer-,mineralized-tissue covering the tooth root and an essential part of the system of periodontal tissue that anchors the tooth to the bone. Periodontal disease results from the destructive behavior of the host elicited by an infectious biofilm adhering to the tooth root and left untreated,may lead to tooth loss. We describe a novel protocol for identifying peptide sequences from native proteins with the potential to repair damaged dental tissues by controlling hydroxyapatite biomineralization. Using amelogenin as a case study and a bioinformatics scoring matrix,we identified regions within amelogenin that are shared with a set of hydroxyapatite-binding peptides (HABPs) previously selected by phage display. One 22-amino acid long peptide regions referred to as amelogenin-derived peptide 5 (ADP5) was shown to facilitate cell-free formation of a cementum-like hydroxyapatite mineral layer on demineralized human root dentin that,in turn,supported attachment of periodontal ligament cells in vitro. Our findings have several implications in peptide-assisted mineral formation that mimic biomineralization. By further elaborating the mechanism for protein control over the biomineral formed,we afford new insights into the evolution of protein-mineral interactions. By exploiting small peptide domains of native proteins,our understanding of structure-function relationships of biomineralizing proteins can be extended and these peptides can be utilized to engineer mineral formation. Finally,the cementomimetic layer formed by ADP5 has the potential clinical application to repair diseased root surfaces so as to promote the regeneration of periodontal tissues and thereby reduce the morbidity associated with tooth loss. | Mustafa Gungormus Ersin E Oren Jeremy A Horst Hanson Fong Marketa Hnilova Martha J Somerman Malcolm L Snead Ram Samudrala Candan Tamerler Mehmet Sarikaya | 2012 | International Journal of Oral Science2012，4，2： | 5 |
| 19 | Prevalence of vacA, cagA and babA2 genes in Cuban Helicobacter pylori isolates显示文摘AIM: To investigate the prevalence of vacuolating cytotoxin (vacA), cytotoxin associated gene A (cagA) and blood adhesion binding antigen (babA2) genotypes of Helicobacter pylori (H pylori) isolates from Cuban dyspeptic patients. METHODS: DNA was extracted from H pylori-positive cultures taken from 130 dyspeptic patients. Genotyping was performed by PCR, using specifi c primers for vacA (s1, s2, m1, m2), cagA and babA2 genes. Endoscopic observations and histological examinations were used to determine patient pathologies. RESULTS: vacA alleles s1 , s2 , m1 and m2 were detected in 96 (73.8%), 34 (26.2%), 75 (57.7%) and 52 isolates (40%), respectively, while the cagA gene was detected in 95 isolates (73.2%). One hundred and seven isolates (82.3%) were babA2-positive. A signif icant correlation was observed between vacAs1m1 and cagA and between vacAs1m1 and babA2 genotypes (P < 0.001 and P < 0.05, respectively) and between babA2 genotype and cagA status (P < 0.05); but, no correlation was observed between vacAs1 and babA2 genotypes. Eighty fi ve (65.4%) and 73 (56.2%) strains were type 1 (vacAs1-cagA-positive) and 'triple- positive' (vacAs1-cagA-babA2-positive), respectively, and their presence was significantly associated with duodenal ulcer (P < 0.01 and P < 0.001, respectively). CONCLUSION: The distribution of the main virulence factors in the Cuban strains in this study resembled that of the Western-type strains, and the more virulent H pylori isolates were signifi cantly associated with duodenal ulcer, ulcer disease being the worst pathology observed in the group studied. | Lino E Torres Karelia Melián Arlenis Moreno Jordis Alonso Carlos A Sabatier Mayrín Hernández Ludisleydis Bermúdez Boris L Rodríguez | 2009 | World Journal of Gastroenterology2009，15，2： | 4 |
| 20 | Ursodeoxycholic acid improves gastrointestinal motility defects in gallstone patients显示文摘AIM: To simultaneously evaluate the presence of defects in gallbladder and gastric emptying, as well as in intestinal transit in gallstone patients (GS) and the effect of chronic ursodeoxycholic acid (UDCA) administration on these parameters and on serum bile acids and clinical outcome in GS and controls (CTR). METHODS: After a standard liquid test meal, gallbla-dder and gastric emptying (by ultrasound), oroileal transit time (OITT) (by an immunoenzymatic technique) and serum bile acids (by HPLC) were evaluated before and after 3 mo of UDCA (12 mg/kg bw/d) or placebo administration in 10 symptomatic GS and 10 matched healthy CTR. RESULTS: OITT was longer in GS than in CTR (P < 0.0001); UDCA significantly reduced OITT in GS (P < 0.0001), but not in CTR. GS had longer gastric half-emptying time (t1/2) than CTR (P < 0.0044) at baseline; after UDCA, t1/2 significantly decreased (P < 0.006) in GS but not in CTR. Placebo administration had no effect on gastric emptying and intestinal transit in both GS and CTR. CONCLUSION: The gallstone patient has simultaneous multiple impairments of gallbladder and gastric emptying, as well as of intestinal transit. UDCA administration restores these defects in GS, without any effect in CTR. These results confirm the pathogenetic role of gastrointestinal motility in gallstone disease and suggest an additional mechanism of action for UDCA in reducing bile cholesterol supersaturation. | A Colecchia G Mazzella L Sandri F Azzaroli M Magliuolo P Simoni ML Bacchi-Reggiani E Roda D Festi | 2006 | World Journal of Gastroenterology2006，12，33： | 4 |
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