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1钢渣沥青混合料应用现状显示文摘总结了钢渣的物理性质、化学成分及矿物相组成,分析了影响钢渣体积安定性的因素及其改善措施,探讨了钢渣沥青混合料的配合比设计方法,分析了钢渣沥青混合料的路用性能(高温稳定性、低温抗裂性、水稳定性、抗疲劳性、体积安定性、抗滑性)及其功能特性(导电性与微波加热),研究了钢渣沥青混合料的生态、社会及经济效益,介绍了国内外的工程应用。研究结果表明:钢渣可用于沥青混合料,且应为陈化半年以上的转炉钢渣或电炉钢渣,钢渣的物理力学性能优良,而化学成分及矿物相组成受炼钢工艺影响有所区别,钢渣体积安定性的不足可通过预处理或陈化处理得到较好的改善,钢渣沥青混合料的配合比设计要点包括钢渣替代传统集料的方式和比例、沥青混合料级配修正、有效相对密度测定以及最佳油石比的确定,钢渣沥青混合料的路用性能及功能特性优于天然集料沥青混合料,具有较好的环境影响性且综合经济效益更高,关于钢渣沥青混合料路用性能的研究较多,而作用机理方面相对缺乏,关键性的限制因素如密度较高、体积安定性不良、混合料沥青用量增加等仍未得到根本性解决,未来应重点研究钢渣沥青路面的长期性能及质量控制体系,并开展全寿命周期研究,以加快钢渣沥青路面的应用与推广。何亮 詹程阳 吕松涛 GRENFELL James 高杰 KOWALSKI Karol J VALENTIN Jan 谢君 REKLidija 凌天清 2020交通运输工程学报2020,20,2:68
22018加拿大心境障碍与焦虑障碍治疗协作组/国际双相障碍学会指南:双相障碍的管理显示文摘加拿大心境障碍与焦虑障碍治疗协作组(Canadian Network for Mood and Anxiety Treatments,CANMAT)曾于2005年发布了第1版双相障碍管理指南,并分别于2007、2009和2013年对该指南进行了更新,其中最近的2次更新是与国际双相障碍学会(International Society for Bipolar Disorders,ISBD)合作完成。2018版CANMAT/ISBD双相障碍治疗指南(以下简称指南)反映了自2005年首版指南发表以来本领域取得的重大进展,包括疾病诊断与疾病管理的更新以及药物治疗与心理治疗的近期研究进展。这些前沿进展中综合考虑了循证证据的级别,并基于治疗疗效、临床实践经验、安全性、耐受性和药物导致的转相风险等,对一线、二线及三线治疗方案进行了简明而清晰的推荐。本指南中新增内容涵盖了双相Ⅰ型障碍(BD-Ⅰ)的躁狂发作急性期、抑郁发作急性期和双相障碍维持期的一线及二线治疗推荐等级划分。这种对治疗推荐等级的划分综合考虑了治疗方法对双相障碍不同时相的影响,将进一步帮助临床医生做出基于循证证据的治疗决策。锂盐、喹硫平、双丙戊酸盐、阿塞那平、阿立哌唑、帕利哌酮、利培酮和卡利拉嗪单药或联合使用被推荐为躁狂发作急性期的一线治疗选择。BD-Ⅰ抑郁期的一线治疗选择包括喹硫平、鲁拉西酮、锂盐、拉莫三嗪单药,鲁拉西酮联合锂盐或双丙戊酸盐或拉莫三嗪辅助治疗。尽管急性期治疗有效的药物通常应继续用于BD-Ⅰ的维持期治疗,但也存在一些特殊情况(例如抗抑郁药)。现有数据表明,锂盐、喹硫平、双丙戊酸盐、拉莫三嗪、阿塞那平和阿立哌唑单药或联合治疗应被视为维持治疗的初始或更换治疗方案时的一线选择。除了探讨BD-Ⅰ的相关问题外,本指南中还对双相Ⅱ型障碍(BD-Ⅱ)的临床管理进行了系统回顾并给予治疗推荐,同时针对特殊人群也有相关推荐,如处于各个生殖周期的女性、儿童、青少年和老年人。此外,本指南中还讨论了特定精神疾病及共病(如物质滥用、焦虑障碍和代谢性疾病)的影响。最后,本指南中概述了安全性和药物监测的相关问题。CANMAT/ISBD工作组希望本指南能够成为全球临床医生的实用工具。Lakshmi N Yatham Sidney H Kennedy Sagar V Parikh Ayal Sehaffer David J Bond Benicio N Frey Verinder Sharma Benjamin I Goldstein Soham Rej Serge Beaulieu Martin Alda Glenda MaeQueen Roumen V Milev Arun Ravindran Claire O'Donovan Diane Mclntosh Raymond W Lam Gustavo Vazquez Flavio Kapczinski Roger S Melntyre Jan Kozicky Shigenobu Kanba Beny Lafer Trisha Suppes Joseph R Calabrese Eduard Vieta Gin Malhi Robert M Post Michael Berk 胡晨(译) 王刚(译) 2019中华精神科杂志2019,52,1:25
3Current status of laparoscopic and robotic ventral mesh rectopexy for external and internal rectal prolapse显示文摘External and internal rectal prolapse with their affiliated rectocele and enterocele, are associated with debilitating symptoms such as obstructed defecation, pelvic pain and faecal incontinence. Since perineal procedures are associated with a higher recurrence rate, an abdominal approach is commonly preferred. Despite the description of greater than three hundred different procedures, thus far no clear superiority of one surgical technique has been demonstrated. Ventral mesh rectopexy(VMR) is a relatively new and promising technique to correct rectal prolapse. In contrast to the abdominal procedures of past decades, VMR avoids posterolateral rectal mobilisation and thereby minimizes the risk of postoperative constipation. Because of a perceived acceptable recurrence rate, good functional results and low mesh-related morbidity in the short to medium term, VMR has been popularized in the past decade. Laparoscopic or robotic-assisted VMR is now being progressively performed internationally and several articles and guidelines propose the procedure as the treatment of choice for rectal prolapse. In this article, an outline of the current status of laparoscopic and robotic ventral mesh rectopexy for the treatment of internal and external rectal prolapse is presented.Jan J van Iersel Tim JC Paulides Paul M Verheijen John W Lumley Ivo AMJ Broeders Esther CJ Consten 2016World Journal of Gastroenterology2016,22,21:20
4Management of recurrent rectal cancer:A population based study in greater Amsterdam显示文摘AIM: To analyze,retrospectively in a population-based study,the management and survival of patients with recurrent rectal cancer initially treated with a macroscopically radical resection obtained with total mesorectal excision (TME). METHODS: All rectal carcinomas diagnosed during 1998 to 2000 and initially treated with a macroscopically radical resection (632 patients) were selected from the Amsterdam Cancer Registry. For patients with recurrent disease,information on treatment of the recurrence was collected from the medical records. RESULTS: Local recurrence with or without clinically apparent distant dissemination occurred in 62 patients (10%). Thirty-two patients had an isolated local recurrence. Ten of these 32 patients (31%) underwent radical re-resection and experienced the highest survival (three quarters survived for at least 3 years). Eight patients (25%) underwent non-radical surgery (median survival 24 mo),seven patients (22%) were treated with radio-and/or chemotherapy without surgery (median survival 15 mo) and seven patients (22%) only received best supportive care (median survival 5 mo). Distant dissemination occurred in 124 patients (20%) of whom 30 patients also had a local recurrence. The majority (54%) of these patients were treated with radio-and/or chemotherapy without surgery (median survival 15 mo). Twenty-seven percent of these patients only received best supportive care (median survival 6 mo),while 16% underwent surgery for their recurrence. Survival was best in the latter group (median survival 32 mo). CONCLUSION: Although treatment options and survival are limited in case of recurrent rectal cancer after radical local resection obtained with TME,patients can benefit from additional treatment,especially if a radical resection is feasible.Roel Bakx Otto Visser Judith Josso Sybren Meijer J Frederik M Slors J Jan B van Lanschot 2008World Journal of Gastroenterology2008,14,39:17
5加强流行病学中观察性研究报告质量(STROBE)声明:观察性研究报告规范显示文摘很多生物医学研究都是观察性的。但对这类研究的报告却通常不完整,从而限制了对其优缺点及普适性的评价。“加强流行病学中观察性研究报告质量(STROBE)”工作组针对一篇完整明确的观察性研究报告应包括的内容提供了一套建议。建议涵盖了流行病学研究的三种主要设计类型:队列设计、病例对照设计和横断面设计。2004年9月,我们召开了为期2天的研讨会,与会的方法学专家、研究人员和期刊编辑共同起草了一份观察性研究报告应纳入的条目清单草案。此后,又通过协调小组数次会议及与有关人员电子邮件讨论等对该草案进行了修改,纳入了经验性证据和方法学方面的意见。通过研讨会及之后反复的咨询和修订,我们制定出了一个包含22个条目的清单(STROBE声明),分为论文的题目、摘要、引言、方法、结果和讨论等部分。其中18个条目适用于所有三种主要的观察性研究设计,其余4个条目则专门用于队列、病例一对照或横断面设计。详细的解释和示范文件已另行发表,在《公共科学图书馆一医学》(PLoS Medicine)、《内科学年报》(Annalsof Internal Medicine)和《流行病学》(Epidemiology)的网站可以免费获得。我们希望STROBE声明能有助于改善观察性研究报告的质量。Erikvon Elm Douglas G Altman Matthias Egger Stuart J Pocock Peter C G tzsche Jan P Vandenbroucke 赵乐(译) 邹光勇(审) 杜怀东(审) 2008世界临床医学2008,2,1:12
6EUS-guided drainage is more successful in pancreatic pseudocysts compared with abscesses显示文摘AIM: To compare the results for endoscopic ultrasound (EUS)-guided drainage of clear fluid pancreatic pseudocysts with the results for abscess drainage. METHODS: All patients referred for endoscopic drainage of a fluid collection were prospectively included. The outcome was recorded. RESULTS: Altogether 26 pseudocysts or abscesses were treated in 25 (6 female) patients. One endoscopist performed the procedures. Non-infected pseudocysts were present in 15 patients and 10 patients had infected fluid collections. The cyst size ranged between 28 cm × 13 cm and 5 cm × 5 cm. The EUS drainage was successful in 94% of the pseudocysts and in 80% of the abscesses (P = 0.04). The complication rate in pseudocysts was 6% and in abscesses was 30% (P = 0.02). Recurrence of a pseudocyst occurred in one patient (4%) after 6 mo; the patient was successfully retreated. CONCLUSION: EUS-guided drainage of pseudocysts is associated with a higher success rate and a lower complication rate compared with abscess drainage.Riadh Sadik Evangelos Kalaitzakis Anders Thune Jan Hansen Claes Jnson 2011World Journal of Gastroenterology2011,17,4:12
7Role of human epidermal growth factor receptor 2 in gastric cancer:Biological and pharmacological aspects显示文摘Amplification of the human epidermal growth factor receptor 2(HER2)gene and overexpression of the HER2protein is found in 15%-20%of patients with gastric and gastroesophageal junction cancer.The degree of HER2 overexpression and amplification varies with the location of the carcinoma,with higher expression in the gastroesophageal and proximal parts compared to the distal parts of the stomach.Further,HER2 overexpression and amplification also seems to be related to the Lauren histological classification,with higher levels found in the intestinal phenotype compared to the diffuse and mixed types.The prognostic properties of HER2 overexpression and amplification are still under debate,but a large number of studies seem to indicate that HER2 is a negative prognostic factor.The usefulness of HER2 targeted therapy in gastric cancer was demonstrated in the ToGA trial,where HER2-positive patients with advanced gastric and gastroesophageal junction adenocarcinoma were randomized to receive5-FU/capecitabine and cisplatin,either alone or in combination with trastuzumab.A statically significant gain in overall survival was seen in patients who received the combined treatment of trastuzumab and chemotherapy.Patients with a strong overexpression of the HER2 protein(IHC3+)specifically benefited from the treatment,with a median overall survival of 17.9 mo.As a consequence of the positive results of the ToGA trial,patients with advanced gastric or gastroesophageal junction adenocarcinoma are now routinely tested for HER2.The ToGA trial must be characterized as a landmark in the treatment of gastric cancer and it has paved the way for a number of new HER2 targeted compounds such as pertuzumab,ado-trastuzumab emtansine,lapatinib,afatinib,and dacomitinib,which are currently undergoing phaseⅡandⅢclinical testing.Overall,this review will discuss the current status of HER2 in gastric and gastroesophageal junction cancer and the future direction in relation to HER2 target therapy.Jan Tr?st J?rgensen 2014World Journal of Gastroenterology2014,20,16:11
8Cyclooxygenase-2 polymorphisms and the risk of esophageal adeno-or squamous cell carcinoma显示文摘AIM:To determine whether-1195 A→G and/or-765 G→C polymorphisms in Cyclooxygenase-2(COX-2 ) may have a risk modifying effect on the development of esophageal carcinoma in a Dutch Caucasian population.METHODS:Two study groups were recruited, 252 patients with esophageal carcinoma and 240 healthy controls, matched for race, age, gender and recruiting area.DNA was isolated from whole blood and used for genotyping.PCR products were digested with restriction enzymes and products were analyzed by agarose gel electrophoresis.Odds ratios(OR) and 95% confldence intervals(CI) were estimated.RESULTS:The distribution of the-1195 A→G polymorphism was signif icantly different in esophageal cancer patients compared to controls.The-1195 GG genotype resulted in a higher risk of developing esophageal adenocarcinoma(OR = 3.85, 95% CI:1.45-10.3) compared with the-1195 AA genotype as a reference.The-765 G→C genotype distribution was not different between the two groups.The GG/ GG haplotype was present more often in esophageal adenocarcinoma patients than in controls(OR = 3.45, 95% CI:1.24-9.58;with AG/AG as a reference).The same trends were observed in patients with squamous cell carcinomas, however, the results did not reach statistical signif icance.CONCLUSION:Presence of the COX-2-1195 GG genotype and of the GG/GG haplotype may result in a higher risk of developing esophageal carcinoma.Jón O Kristinsson Paul van Westerveld Rene HM te Morsche Hennie MJ Roelofs T Wobbes Ben JM Witteman Adriaan CITL Tan Martijn GH van Oijen Jan BMJ Jansen Wilbert HM Peters 2009World Journal of Gastroenterology2009,15,28:11
9沥青体系的分子动力学研究进展及展望显示文摘随着我国道路工程的飞速发展,沥青混凝土在路面工程中有越来越广泛的应用。近年来,沥青材料的研究已不仅局限于宏观性能试验,还拓展到介观与微观层面对沥青材料进行多尺度研究。分子动力学方法属于微观研究方法的一种,它是通过积分算法模拟研究对象在不同条件下的分子运动轨迹与体系能量变化,并分析模拟数据得出结论。该方法已被广泛应用于分子尺度下路面沥青材料设计与微观机理研究,其优势在于从分子运动的角度解释沥青体系的各种现象与性质。因此,许多学者采用宏观试验和分子动力学模拟相结合的多尺度方法研究沥青体系,这将推动沥青材料的进一步发展。本文对沥青体系的分子动力学进行了全面的分析,构建了沥青体系分子动力学模型的一般平衡步骤,提出采用密度、玻璃态转变温度、黏度、溶解度参数等对沥青体系分子动力学模型的有效性进行验证。综合分析了分子动力学方法对沥青纳米聚集、自修复、改性、老化、界面黏附等行为机理的研究进展,提出采用耗散粒子动力学与粗粒化分子动力学对现阶段沥青体系分子动力学的研究尺度进行扩展。研究结果表明,沥青类材料的分子动力学方法还处于早期探索阶段,但其发展潜力极大,利用分子动力学方法研究沥青体系各组分分子的动力学行为,可揭示常规试验无法观察到的分子含时运动规律,预测沥青材料的宏观性能并针对沥青的分子结构提出其路用性能改善措施,从分子尺度上推动沥青路面多尺度试验仿真方法的发展与完善,为沥青材料基因组的开发研究奠定基础。何亮 李冠男 郑雨丰 Alessio Alexiadis Jan Valentin Karol J Kowalski 2020材料导报2020,34,19:10
10Diagnostic yield of small bowel capsule endoscopy depends on the small bowel transit time显示文摘AIM:To investigate whether the small bowel transit time(SBTT)influences the diagnostic yield of capsule endoscopy(CE).METHODS:Six hundred and ninety-one consecutive CE procedures collected in a database were analyzed.SBTT and CE findings were recorded.A running mean for the SBTT was calculated and correlated to the diagnostic yield with a Spearman's correlation test.Subgroup analyses were performed for the various indications for the procedure.RESULTS:There was a positive correlation between the diagnostic yield and SBTT(Spearman's rho 0.58,P <0.01).Positive correlations between diagnostic yield and SBTT were found for the indication obscure gastrointestinal bleeding(r=0.54,P<0.01),for polyposis and carcinoid combined(r=0.56,P<0.01)and for the other indications(r=0.90,P<0.01),but not for suspected Crohn's disease(r=-0.40).CONCLUSION:The diagnostic yield in small bowel capsule endoscopy is positively correlated with the small bowel transit time.This is true for all indications except for suspected Crohn's disease.Jessie Westerhof Jan J Koornstra Reinier A Hoedemaker Wim J Sluiter Jan H Kleibeuker Rinse K Weersma 2012World Journal of Gastroenterology2012,18,13:10
11Secretion of melatonin and 6-sulfatoxymelatonin urinary excretion in functional dyspepsia显示文摘AIM:To evaluate blood concentration of melatonin and urinary excretion of its metabolite,6-sulfatoxymelatonin(6-OHMS),in functional dyspepsia(FD).METHODS:Ninety individuals were enrolled in the study:30 in each study group:patients with postprandial distress syndrome(PDS),epigastric pain syndrome(EPS),and controls.Blood samples were drawn at 02:00 and 09:00 h and 24-h urine collection was performed.Serum melatonin and urinary 6-OHMS concentrations were measured by enzyme-linked immunosorbent assay.RESULTS:Serum melatonin concentration at night and in the morning was significantly(P < 0.001) higher in PDS patients [at 02:00 h-93.3 pg/mL,quartile range(QR):79.8-116.2;at 09.00 h-14.3 pg/mL,QR:7.06-19.0] than in EPS(57.2 pg/mL,QR:42.6-73.1;8.1 pg/mL,QR:4.1-9.3) and control patients(57.7 pg/mL,QR:51.2-62.5;8.1 pg/mL,QR:5.4-10.3).A similar relationship was observed for urinary 6-OHMS excretion.Patients with severe PDS symptoms had a higher melatonin concentration than these with moderate syndromes,whereas patients with severe EPS had a lower urinary 6-OHMS excretion than patients with moderate symptoms.CONCLUSION:Evaluation of melatonin serum concentrations and 24-h urinary 6-OHMS excretion are useful methods for differential diagnosis of various clinical forms of FD.Cezary Chojnacki Tomasz Poplawski Grazyna Klupinska Janusz Blasiak Jan Chojnacki Russel J Reiter 2011World Journal of Gastroenterology2011,17,21:8
12羧甲基木薯淀粉的取代方式研究显示文摘采用高效液相色谱(HPLC)和核磁共振波谱(1HNMR)分析了混水/有机介质中合成羧甲基木薯淀 粉的取代方式。发现HPLC是一种测定不同条件下合成的羧甲基木薯淀粉取代度(DS)的可靠方法。在测量 的范围内,未取代、一取代、二取代和三取代无水葡萄糖单元的摩尔分数分布和Spurlin模型非常吻合。用高 分辨率500MHz1HNMR分析了木薯淀粉羧甲基过程的取代度和反应顺序。依据淀粉和羧甲基淀粉(CMS) 的结构确定了各个峰位置。比较所得数据发现:依据HPLC计算的DSHPLC小于从500MHz1HNMR计算所得 的DS。无水葡萄糖单元中C2、C3和C6的羧甲基化反应顺序为C6>C2>C3。姚杰 尤宏 包正 沈晋 Klaassien J Ganzeveld Jan Henk Marsman Hero J Heeres 陈文仁 2005分析化学2005,33,2:8
13Neutrophil engagement and septic challenge in acute experimental pancreatitis in rats显示文摘AIM: To investigate the influence of neutrophil adhesion molecule blockade with monoclonal antibody (MoAb CD11b) and E. coli lipopolysaccharide (LPS)administration on experimental acute pancreatitis (AP).METHODS: AP was induced by four ip injections of cerulein (Cn) at 1-h intervals. MoAb CD 11b and LPS were administered at the beginning of the experiment.RESULTS: The neutrophil count and chemiluminescence were diminished at the beginning of AP. The oxidative stress parameters were found within the pancreatic gland. MoAb CD 11b used for AP resulted in a significant reduction of pancreatic infiltration and pancreatitis oxidative stress parameters. Serum interleukin-6 (IL-6)was not detected in AP animals, whereas high serum IL-6 concentration was noted only in animals receiving LPS.CONCLUSION: Neutrophils are involved in pancreatic damage in the early stage of AP. Neutrophil infiltration reduction protects the pancreatic gland from destruction during AP. LPS does not change the early course of Cn pancreatitis in rats.Stanisiaw Ha Marek Dobosz Jan J Kaczor Robert Rzepko Ewa Aleksandrowicz-Wrona Zdzislaw Wajda Zbigniew ledzi■ski Jacek Krajewski 2005World Journal of Gastroenterology2005,11,41:7
14诊断性试验和策略的证据质量和推荐强度的分级显示文摘GRADE系统能对诊断性试验或策略的证据质量和推荐强度进行分级。本文旨在阐释在此过程中如何考虑患者的重要结局,Holger J Schünemann Andrew D Oxman Jan Brozek Paul Glasziou Roman Jaeschke Gunn E Vist John W Williams Jr Regina Kunz Jonathan Craig Victor M Montori Patrick Bossuyt Gordon H Guyatt 李晓 黄程 陈耀龙 李幼平 2009中国循证医学杂志2009,9,5:7
15固定低剂量三联抗高血压药物与常规治疗对斯里兰卡轻度至中度高血压患者血压控制的疗效差异:一项随机临床试验显示文摘控制不良的高血压是全球领先的公共卫生问题,需要新的治疗策略。该研究评估低剂量三联抗高血压药物治疗是否能达到比常规治疗更好的血压控制。研究者纳入2016年2月至2017年5月在斯里兰卡11所城市医院诊所就诊的需要开始抗高血压治疗(未治疗的患者)或接受单药治疗的患者,进行低剂量三联降压与常规治疗比较的随机、开放性试验,随访至2017年10月。Web-ster R Salam A de Silva HA Selak V Stepien S Rajapakse S Amarasekara S Amarasena N Billot L de Silva AP Fernando M Guggilla R Jan S Jayawardena J Maulik PK Mendis S Munasinghe J Naik N Prabhakaran D Ranasinghe G Thom S Tisserra N Senaratne V Wijekoon S Wijeyasingam S Rodgers A Patel A 刘莉 叶鹏 2018中华高血压杂志2018,26,12:7
16大气二氧化氮与每日总死亡率、心血管和呼吸系统疾病死亡率的短期关联:398个城市的多中心分析显示文摘目的:采用统一的分析方案,评估全球多个国家/地区的二氧化氮(NO_(2))与总死亡率、心血管和呼吸系统疾病死亡率之间的短期关联。研究设计:采用两阶段的时间序列分析方法、过度离散的广义线性模型和多水平meta分析。研究地点:22个低到高收入国家/地区的398个城市。主要结局指标:1973—2018年逐日总死亡人数(6280万人)、心血管疾病死亡人数(1970万人)和呼吸系统疾病死亡人数(550万人)。结果:平均而言,NO_(2)浓度在滞后1天(前1天)每增加10μg/m^(3),会导致总死亡率、心血管和呼吸系统疾病死亡率分别增加0.46%(95%可信区间0.36%~0.57%)、0.37%(0.22%~0.51%)、0.47%(0.21%~0.72%)。在对共污染物(PM_(10)、PM_(2.5)、臭氧、二氧化硫和一氧化碳)进行调整后,这些关联仍然很稳定。所有3种死因的暴露-反应曲线几乎是线性的,没有明显的阈值。在398个城市中,可归因于高过假定零水平的NO_(2)浓度造成的死亡比例为1.23%(95%可信区间0.96%~1.51%)。结论:这项多中心研究提供了关于NO_(2)短期暴露与总死亡率、心血管和呼吸系统死亡风险之间的独立和线性关联的关键证据,说明通过加强NO_(2)的控制和监管限制标准,可获得人群水平的健康收益。孟夏 刘聪(校) 陈仁杰 郑湃(译) 阚海东(校) Francesco Sera Ana Vicedo-Cabrera Ai Milojevic Maria Guo Yuming Tong Shilu Micheline de Sousa Zanotti Stagliorio Coelh Paulo Hilario Nascimento Saldiva Eric Lavigne Patricia Matus Correa Nicolas Valdes Ortega Samuel Osorio Garcia Jan Kysely Ales Urban Hans Orru Marek Maasikmets Jouni J K Jaakkola Niilo Ryti Veronika Huber Alexandra Schneider Klea Katsouyanni Antonis Analitis Masahiro Hashizume Yasushi Honda Chris Fook Sheng Ng Baltazar Nunes João Paulo Teixeira Iulian Horia Holobaca Simona Fratianni Ho Kim Aurelio Tobias Carmeníniguez Bertil Forsberg ChristoferÅström Martina S Ragettli Yue-Liang Leon Guo Shih-Chun Pan Shanshan Li Michelle L Bell Antonella Zanobetti Joel Schwartz Tangchun Wu Antonio Gasparrini 2021英国医学杂志中文版2021,24,8:7
17The IL-1R/TLR signaling pathway is essential for efficient CD8+ T-cell responses against hepatitis B virus in the hydrodynamic injection mouse model显示文摘The outcome of hepatitis B viral(HBV)infection is determined by the complex interactions between replicating HBV and the immune system.While the role of the adaptive immune system in the resolution of HBV infection has been studied extensively,the contribution of innate immune mechanisms remains to be defined.Here we examined the role of the interleukin-1 receptor/Toll-like receptor(IL-1R/TLR)signaling pathway in adaptive immune responses and viral clearance by exploring the HBV mouse model.Hydrodynamic injection with a replication-competent HBV genome was performed in wild-type mice(WT)and a panel of mouse strains lacking specific innate immunity component expression.We found higher levels of HBV protein production and replication in Tlr2^(−/−),Tlr23479^(−/−),3d/Tlr24^(−/−),Myd88/Trif^(−/−)and Irak4^(−/−)mice,which was associated with reduced HBV-specific CD8+T-cell responses in these mice.Importantly,HBV clearance was delayed for more than 2 weeks in 3d/Tlr24^(−/−),Myd88/Trif^(−/−)and Irak4^(−/−)mice compared to WT mice.HBV-specific CD8+T-cell responses were functionally impaired for producing the cytokines IFN-γ,TNF-αand IL-2 in TLR signaling-deficient mice compared to WT mice.In conclusion,the IL-1R/TLR signaling pathway might contribute to controlling HBV infection by augmenting HBV-specific CD8+T-cell responses.Zhiyong Ma Jia Liu Weimin Wu Ejuan Zhang Xiaoyong Zhang Qian Li Gennadiy Zelinskyy Jan Buer Ulf Dittmer Carsten J Kirschning Mengji Lu 2017Cellular & Molecular Immunology2017,14,12:6
18Management and outcome of hepatocellular adenoma with massive bleeding at presentation显示文摘AIM To evaluate outcome of acute management and risk of rebleeding in patients with massive hemorrhage due to hepatocellular adenoma(HCA). METHODS This retrospective cohort study included all consecutive patients who presented to our hospital with massive hemorrhage(grade Ⅱ or Ⅲ) due to ruptured HCA and were admitted for observation and/or intervention between 1999-2016. The diagnosis of HCA was based on radiological findings from contrastenhanced magnetic resonance imaging(MRI) or pathological findings from biopsy or resection of the HCA. Hemorrhage was diagnosed based on findings from computed tomography or MRI. Medical records were reviewed for demographic features, clinical presentation, tumor features, initial and subsequent management, short-and long-term complications and patient and lesion follow-up. RESULTS All patients were female(n = 23). Treatment in the acute phase consisted of embolization(n = 9, 39.1%), conservative therapy(n = 13, 56.5%), andother intervention(n = 1, 4.3%). Median hemoglobin level decreased significantly more on days 0-3 in the intervention group than in the patients initially treated conservatively(0.9 mmol/L vs 2.4 mmol/L respectively, P = 0.006). In total, 4 patients suffered severe shortterm complications, which included hypovolemic shock, acute liver failure and abscess formation. After a median follow-up of 36 mo, tumor regression in nonsurgically treated patients occurred with a median reduction of 76 mm down to 25 mm. Four patients underwent secondary(elective) treatment(i.e., tumor resection) to address HCA size of > 5 cm and/or desire for future pregnancy. One case of rebleeding was documented(4.3%). None of the patients experienced long-term complication(mean follow-up time: 36 mo). CONCLUSION With a 4.3% risk of rebleeding, secondary(elective) treatment of HCA after massive hemorrhage may only be considered in patients with persistent HCA > 5 cm.Anne J Klompenhouwer Robert A de Man Maarten GJ Thomeer Jan NM Ijzermans 2017World Journal of Gastroenterology2017,23,25:5
19Evaluation of enterochromaffin cells and melatonin secretion exponents in ulcerative colitis显示文摘AIM: To study an assessment of the number of enterochromaffin cells and expression of hydroxyindole-Omethyltransferase in colonic mucosa and urine excretion of 6-sulfatoxymelatonin in patients with ulcerative colitis. METHODS: The study included 30 healthy subjects (groupⅠ-C), 30 patients with ulcerative proctitis [group Ⅱ-ulcerative proctitis (UP)] and 30 patients with ulcerative colitis [group Ⅲ-ulcerative colitis (UC)] in acute phases of these diseases. The number of enterochromaffin cells (EC) was estimated in rectal and colonic mucosa. Bioptates were assembled from many different parts of the large intestine. Immunorective cells collected from various parts of the colon were counted according to the Eurovision DAKO (Dako A/S, Copenhagen, Denmark) System in the range of 10 fields in each bioptate at × 200 magnification. The level of mRNA expression of hydroxyindole-O-methyltransferase (HIOMT) in colonic mucosa was estimated with RT-PCR. Urine 6-sulfatoxymelatonin (6-HMS) excretion was determined immunoenzymatically using an IBL (IBL International GmbH, Hamburg, Germany) kit (RE 54031). RESULTS: The number of EC cells in healthy subjects (C) was 132.40 ± 31.26. In patients of group Ⅱ (UP) and group Ⅲ (UC) the number of these cells was higher 225.40 ± 37.35 (P < 0.001) and 225.24 ± 40.50 (P < 0.001) respectively. Similar differences were related to HIOMT expression, which was 1.04 ± 0.36 in group C, 1.56 ± 0.56 (P < 0.01) in group UP and 2.00 ± 0.35 (P < 0.001) in group UC. Twenty-four hour 6-HMS urinary excretion was as follows: C 16.32 ± 4.95 μg/24 h, UP 26.30 ± 7.29 μg/24 h (P < 0.01), UC 42.30 ± 12.56 μg/24h (P < 0.001). A correlation between number of EC cells and 6-HMS excretion was noted in all groups: r = 0.766 in patients with UP, r = 0.703 with UC and r = 0.8551 in the control group; the correlation between the results is statistically significant. CONCLUSION: In the acute phases of both UP and UC, proliferation of EC cells and high expression of HIOMT and urine excretion of 6-HMS is noted. These changes may represent a beneficial response in the anti-inflammatory and defense mechanism.Cezary Chojnacki Maria Wisniewska-Jarosińska Grazyna Kulig Ireneusz Majsterek Russel J Reiter Jan Chojnacki 2013World Journal of Gastroenterology2013,19,23:5
20Management of rectal foreign bodies: Description of a new technique and clinical practice guidelines显示文摘A number of techniques have been described to remove rectal foreign bodies. In this report, a novel endoscopic technique using a pneumatic dilatation balloon normally used in achalasia patients is presented. In addition, a systematic review of the literature was performed for non-operative methods to remove foreign bodies from the rectum. These results are summarised, presented as a practical at-a- glance overview and a flow chart is offered to guide the clinician in treatment decisions. The design of the flow chart was based on the aims to treat the patient preferably on an outpatient basis with minimally invasive techniques and if possible under conscious sedation rather than general anaesthesia.Jan J Koornstra Rinse K Weersma 2008World Journal of Gastroenterology2008,14,27:5
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