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1华北克拉通岩石圈地幔置换作用和壳幔生长耦合的Re-Os同位素证据显示文摘测定了辽宁复县奥陶纪金伯利岩和河北汉诺坝与山东栖霞第三纪碱性玄武岩中产出的地幔包体的Re Os同位素组成。金伯利岩中地幔包体的Re贫化Os同位素模式年龄 (TRD)为 2 .5~ 2 .8Ga ,从Re Os同位素定年角度证明了华北克拉通确实存在太古宙岩石圈地幔。对汉诺坝二辉橄榄岩包体获得了 (1.9± 0 .18)Ga的Re Os同位素等时线年龄 ,表明现今保存在那里的地幔主要是古元古代时形成的。汉诺坝地区出露有大量新太古代岩石 ,表明曾存在太古宙地幔。由于缺乏太古宙年龄 ,说明由汉诺坝所代表的克拉通中部曾存在的太古宙地幔在古元古代时已被减薄 ,并被 1.9Ga的新生岩石圈地幔置换。该事件与华北克拉通中部广泛的古元古代碰撞造山过程导致的麻粒岩相变质作用的时代相同 ,说明有关的岩石圈置换作用可能主要与拆沉作用有关。栖霞地幔包体具有与现代对流地幔相同的Os同位素组成 ,且Os同位素组成与Re/Os比值没有明显相关性 ,表明年龄很新。结合其它地质地球化学证据 ,说明克拉通东部的太古宙岩石圈地幔的置换作用主要发生在中生代 ,且可能与三叠纪华北和扬子陆块的陆陆碰撞造山导致的岩石圈地幔和下地壳的拆沉作用有关。本研究表明华北克拉通岩石圈地幔置换作用在时空上的分布是十分不均一的。 2 .5~ 2 .8Ga与 1.9Ga不仅?高山 Roberta L.RUDNICK Richard W.CARLSON William F.McDONOUGH 刘勇胜 2003地学前缘2003,10,3:47
2Proton pump inhibitor treatment of patients with gastroesophageal reflux-related chronic cough:A comparison between two different daily doses of lansoprazole显示文摘瞄准:为了比较 lansoprazole 的二不同一日量,给 12 个星期并且到估计角色胃肠(官方补给) 是的调查为选择病人的标准。方法:从 45 ,病人们为 unexplained 提交了长期的坚持的咳嗽, 36 有至少一官方补给的调查(内视镜检查法,食道的 pH-metry 和质子的4星期的试用抽的 24-h 禁止者( PPI )治疗)积极并且随机被分配收到 30 mg lansoprazole o.d 或 30 mg 为 12 个星期的 lansoprazole b.i.d 。症状在 PPI 测试(访问 2 ) 以后并且在 12 星期的 lansoprazole 治疗经期(访问 3 ) 以后在基线(访问 1 ) 被评估。结果:35 个病人完成了学习协议。报导的 21 个病人(60.0%) 没有二个治疗组之间的差别从他们的咳嗽完成地势(58.8% 和 61.1% 没在 30 mg lansoprazole 和 60 个 mg lansoprazole 组有咳嗽,分别地) 。在治疗的结束从他们的咳嗽有完全的地势的超过 80% 病人显示出积极回答到 PPI 测试。结论:12 星期甚至在标准一日量的 lansoprazole 治疗,在有长期的坚持的咳嗽的病人是有效的。对起始的 PPI 测试的积极回答似乎是为选择对治疗作出回应的病人的最好的标准。Fabio Baldi Roberta Cappiello Carlotta Cavoli Stefania Ghersi Francesco Torresan Enrico Roda 2006World Journal of Gastroenterology2006,12,1:31
3Introducing an enhanced recovery after surgery program in colorectal surgery:A single center experience显示文摘AIM:To study the implementation of an enhanced recovery after surgery(ERAS)program at a large University Hospital from'pilot study'to'standard of care'.METHODS:The study was designed as a prospective single centre cohort study.A prospective evaluation of compliance to a protocol based on full application of all ERAS principles,through the progressive steps of its implementation,was performed.Results achieved in the initial pilot study conducted by a dedicated team(n=47)were compared to those achieved in the shared protocol phase(n=143)three years later.Outcomes were length of postoperative hospital stay,readmission rate,compliance to the protocol and morbidity.Primary endpoint was the description of the results and the identification of critical issues of large scale implementation of an ERAS program in colorectal surgery emerged in the experience of a single center.Secondary endpoint was the identification of interventions that have been proven to be effective for facilitating the transition from traditional care pathways to a multimodal management protocol according to ERAS principles in colorectal surgery at a single center.RESULTS:During the initial pilot study(March 2009 to December 2010;47 patients)conducted by a dedicated multidisciplinary team,compliance to the items of ERAS protocol was 93%,with a median length of hospital stay(LOS)of 3 d.Early anastomotic fistulas were observed in 2 cases(4.2%),which required reoperation(Clavien-Dindo gradeⅢb).None of the patients had been discharged before the onset of the complication,which could therefore receive prompt treatment.There were also four(8.5%)minor complications(ClavienDindo gradeⅡ).Thirty days readmission rate was 4%.Perioperative mortality was nil.After implementation of the protocol throughout the Hospital in unselected patients(May 2012 to December 2012;147 patients)compliance was 74%,with a median LOS of 6 d.Early anastomotic fistulas were observed in 11 cases(7.7%),5(3.5%)of which required reoperation(Clavien-Dindo gradeⅢb).Two early anastomotic fistulas were treated by radiologic/endoscopic manoeuvres and 4 were treated conservatively.There were also 36(25.2%)minor complications,21(14.7%)of which were Clavien-Dindo gradeⅡand 15(10.5%)of which were Clavien-Dindo gradeⅠ.Only two patients whose course was adversely affected by the development of an anastomotic leak had been discharged before the onset of the complication itself,requiring readmission.Readmission rate within 30 d was 4%.Perioperative mortality was 1%.CONCLUSION:Our results confirm that introduction of an ERAS protocol for colorectal surgery allows quickerpostoperative recovery and shortens the length of stay compared to historical series.Stefano Bona Mattia Molteni Riccardo Rosati Ugo Elmore Pietro Bagnoli Roberta Monzani Monica Caravaca Marco Montorsi 2014World Journal of Gastroenterology2014,20,46:30
4China's Outward FDI: An Industry-Level Analysis of Host-Country Determinants显示文摘Alessia Amighini Roberta Rabellotti Marco Sanfilippo 2013Frontiers of Economics in China-Selected Publications from Chinese Universities2013,8,3:27
5Risk factors associated with pancreatic fistula after distal pancreatectomy, which technique of pancreatic stump closure is more beneficial?显示文摘AIM: To identify risk factors related to pancreatic fistula in patients undergoing distal pancreatectomy (DP) and to determine the effectiveness of using a stapled and a sutured closed of pancreatic stump. METHODS: Sixty-four patients underwent DP during a 10-year period. Information regarding diagnosis, operative details, and perioperative morbidity or mortality was collected. Eight risk factors were examined. RESULTS: Indications for DP included primary pancreatic disease (n = 38, 59%) and non-pancreatic malignancy (n = 26, 41%). Postoperative mortality and morbidity rates were 1.5% and 37% respectively; one patient died due to sepsis and two patients required a reoperation due to postoperative bleeding. Pancreatic fistula was developed in 14 patients (22%); 4 of fistulas were classified as Grade A, 9 as Grade B and only 1 as Grade C. Incidence of pancreatic fistula rate was significantly associated with four risk factors: pathology, use of prophylactic octreotide therapy, concomitant splenectomy, and texture of pancreatic parenchyma. The role that technique (either stapler or suture) of pancreatic stump closure plays in the development of pancreatic leak remains unclear. CONCLUSION: The pancreatic fistula rate after DP is 22%. This is reduced for patients with non-pancreatic malignancy, fibrotic pancreatic tissue, postoperative prophylactic octreotide therapy and concomitant splenectomy.Marco Pericoli Ridolfini Sergio Alfieri Stavros Gourgiotis Dario Di Miceli Fabio Rotondi Giuseppe Quero Roberta Manghi Giovanni Battista Doglietto 2007World Journal of Gastroenterology2007,13,38:24
6Emerging role of IL-23/IL-17 axis in H pylori-associated pathology显示文摘Colonization of stomach by H pylori is followed by a marked infiltration of the mucosa with polymorphonuclear leukocytes, macrophages, and lymphocytes that very often remains asymptomatic, but in some circumstances can lead to the development of gastroduodenal ulceration, gastric carcinoma, and mucosa-associated lymphoid tissue lymphoma. The molecular mechanisms by which H pylori triggers and maintains the local immune response are complex, but there is evidence that cytokines produced by both immune and non-immune cells contribute to amplify the ongoing inflammation. H pylori infection is associated with a marked mucosal induction of T helper (Th) type 1 and Th17-type cytokines that is governed by specific antigen-presenting cell-derived molecules, such as interleukin (IL)-12 and IL-23. In this paper, we will review the available data on the expression and role of IL-23 and IL-17 in H pylori- related gastritis.Roberta Caruso Francesco Pallone Giovanni Monteleone 2007World Journal of Gastroenterology2007,13,42:20
7PNPLA3 I148M polymorphism and progressive liver disease显示文摘The 148 Isoleucine to Methionine protein variant(I148M)of patatin-like phospholipase domain-containing 3(PNPLA3),a protein is expressed in the liver and is involved in lipid metabolism,has recently been identified as a major determinant of liver fat content.Several studies confirmed that the I148M variant predisposes towards the full spectrum of liver damage associated with fatty liver:from simple steatosis to steatohepatitis and progressive fibrosis.Furthermore,the I148M variant represents a major determinant of progression of alcohol related steatohepatitis to cirrhosis,and to influence fibrogenesis and related clinical outcomes in chronic hepatitis C virus hepatitis,and possibly chronic hepatitis B virus hepatitis,hereditary hemochromatosis and primary sclerosing cholangitis.All in all,studies suggest that the I148M polymorphism may represent a general modifier of fibrogenesis in liver diseases.Remarkably,the effect of the I148M variant on fibrosis was independent of that on hepatic steatosis and inflammation,suggesting that it may affect both the quantity and quality of hepatic lipids and the biology of non-parenchymal liver cells besides hepatocytes,directly promoting fibrogenesis.Therefore,PNPLA3 is a key player in liver disease progression.Assessment of the I148M polymorphism will possibly inform clinical practice in the future,whereas the determination of the effect of the 148M variant will reveal mechanisms involved in hepatic fibrogenesis.Paola Dongiovanni Benedetta Donati Roberta Fares Rosa Lombardi Rosellina Margherita Mancina Stefano Romeo Luca Valenti 2013World Journal of Gastroenterology2013,19,41:17
8Current and future pharmacological therapies for managing cirrhosis and its complications显示文摘Due to the restrictions of liver transplantation,complication-guided pharmacological therapy has become the mainstay of long-term management of cirrhosis.This article aims to provide a complete overview of pharmacotherapy options that may be commenced in the outpatient setting which are available for managing cirrhosis and its complications,together with discussion of current controversies and potential future directions.PubMed/Medline/Cochrane Library were electronically searched up to December 2018 to identify studies evaluating safety,efficacy and therapeutic mechanisms of pharmacological agents in cirrhotic adults and animal models of cirrhosis.Non-selective betablockers effectively reduce variceal re-bleeding risk in cirrhotic patients with moderate/large varices,but appear ineffective for primary prevention of variceal development and may compromise renal function and haemodynamic stability in advanced decompensation.Recent observational studies suggest protective,haemodynamically-independent effects of beta-blockers relating to reduced bacterial translocation.The gut-selective antibiotic rifaximin is effective for secondary prophylaxis of hepatic encephalopathy;recent small trials also indicate its potential superiority to norfloxacin for secondary prevention of spontaneous bacterial peritonitis.Diuretics remain the mainstay of uncomplicated ascites treatment,and early trials suggest alpha-adrenergic receptor agonists may improve diuretic response in refractory ascites.Vaptans have not demonstrated clinical effectiveness in treating refractory ascites and may cause detrimental complications.Despite initial hepatotoxicity concerns,safety of statin administration has been demonstrated in compensated cirrhosis.Furthermore,statins are suggested to have protective effects upon fibrosis progression,decompensation and mortality.Evidence as to whether proton pump inhibitors cause gut-liver-brain axis dysfunction is conflicting.Emerging evidence indicates that anticoagulation therapy reduces incidence and increases recanalisation rates of non-malignant portal vein thrombosis,and may impede hepatic fibrogenesis and decompensation.Pharmacotherapy for cirrhosis should be implemented in accordance with up-to-date guidelines and in conjunction with aetiology management,nutritional optimisation and patient education.David Kockerling Rooshi Nathwani Roberta Forlano Pinelopi Manousou Benjamin H Mullish Ameet Dhar 2019World Journal of Gastroenterology2019,25,8:16
9上海26万妇女乳房自我检查随机试验显示文摘目的论证指导妇女进行乳房自我检查(BSE)是否能有效降低乳腺癌患者的死亡率。方法自1989年10月起,上海26.6万名年龄在30~64岁的妇女,随机进入指导组(132979名)和对照组(133085名)。在指导组,最初先由医务人员做规范的BSE手法演示,随后的4年中,使用BSE录像带进行二次强化教育,并定期进行BSE指导和在医务人员监察下进行BSE操作。本研究进行5年,全部活动均被记录。队列人群随访到2000年7月,乳腺癌患者的生存状况随访到2001年12月。统计分析采用Kaplan-Meier方法、Logrank检验以及Cox模型。结果指导组检出乳腺癌864例,其中死于乳腺癌133例;对照组检出乳腺癌896例,其中死于乳腺癌130例。两组乳腺癌病例的肿块大小、TNM分期和累积死亡率的差异均无统计学意义(P均>0.05)。但是指导组比对照组有较多和较小的纤维腺瘤被检出(P<0.01)。结论对人群开展BSE教育和指导,未能降低人群的乳腺癌死亡率;接受BSE教育的妇女比没有接受教育的妇女可检出较多的和较小的良性乳房肿块。高道利 David BThomas Roberta M Ray 王文婉 Charlene J Allison 陈范良 Peggy Porter 胡永伟 赵关林 潘雷达 李雯瑾 武春园 Zakia Coriaty Ilonka Evans 林明纲 Helge Stalsberg Steven Gself 2005中华肿瘤杂志2005,27,6:14
10Treatment of functional dyspepsia with sertraline:A double-blind randomized placebo-controlled pilot study显示文摘AIM:To evaluate sertraline,a selective serotonin reuptake inhibitor in the treatment of patients with functional dyspepsia.METHODS:Consecutive tertiary hospital patients with a clinical diagnosis of functional dyspepsia(FD) according to the Rome Ⅱ criteria with a Hong Kong dyspepsia index(HKDI) of greater than 16 were recruited.Patients commenced enrolment prior to the inception of the Rome Ⅲ criteria for functional dyspepsia.All patients were ethnic Chinese,had a normal upper endoscopy and were Helicobacter pylori negative prior to enrolment.Study patients were randomized to receive sertraline 50 mg or placebo daily for 8 wk.HKDI symptom scores,quality of life,hospital anxiety and depression(HAD) scale and global symptom relief were evaluated before,during and after treatment.Adverse effects were monitored during and after treatment.RESULTS:A total of 193 patients were randomized in the intention to treat(ITT),and 150 patients were included in the per protocol(PP) analysis.In both the ITT and PP,there was no difference in the primary outcome of global dyspepsia symptoms between the sertraline and placebo groups at week 8.In the ITT analysis,98 and 95 patients were randomized to the sertraline and placebo groups respectively.A total of 43 patients withdrew from the study(22.3%) by week 8,with 23 of the 24 drop-outs in the sertraline group occurring prior to week 4(95.8%).In contrast,in the placebo arm,11 of 19 patients dropped out by week 4(57.9%).Utilizing the last response carried forward to account for the drop-outs,there were no differences between the sertraline and placebo groups at baseline in terms of the HKDI,HKDI 26.08 ± 6.19 vs 26.70 ± 5.89,P = 0.433;and at week 8,HKDI 22.41 ± 6.36 vs 23.25 ± 7.30,P = 0.352 respectively.In the PP analysis,74 and 76 patients were randomized to the sertraline and placebo groups respectively.At baseline,there were no statistically significant differences between the sertraline and placebo groups,HKDI 25.83 ± 6.313 vs 27.19 ± 5.929 respectively,P = 0.233;however by week 8,patients in the sertraline group demonstrated a statistically significant difference in their Hong Kong Dyspepsia Index compared to placebo,HKDI 20.53 ± 6.917 vs 23.34 ± 7.199,P = 0.02,respectively).There was also no statistically significant difference in overall quality of life measures or the HAD scale related to treatment in either the ITT or PP analysis at week 8.CONCLUSION:This pilot study,the first to examine sertraline,a selective serotonin reuptake inhibitor,for the management of FD,did not find that it was superior to placebo.Victoria PY Tan Tin K Cheung Wai M Wong Roberta Pang Benjamin CY Wong 2012World Journal of Gastroenterology2012,18,42:14
11Effect of Lactobacillus rhamnosus HN001 and Bifidobacterium longum BB536 on the healthy gut microbiota composition at phyla and species level: A preliminary study显示文摘AIM To evaluate the ability of Lactobacillus rhamnosus HN001 and Bifidobacterium longum BB536 to colonize the intestinal environment of healthy subjects and modify the gut microbiota composition.METHODS Twenty healthy Italian volunteers, eight males and twelve females, participated in the study. Ten subjects took a sachet containing 4 × 109 colony-forming units(CFU) of Bifidobacterium longum BB536 and 109 CFU of Lactobacillus rhamnosus HN001, 30 min before breakfast(pre-prandial administration), while ten subjects took a sachet of probiotic product 30 min after breakfast(post-prandial administration). The ability ofLactobacillus rhamnosus HN001 and Bifidobacterium longum BB536 to colonize human gut microbiota was assessed by means of quantitative real-time PCR, while changes in gut microbiota composition were detected by using Ion Torrent Personal Genome Machine.RESULTS Immediately after 1-mo of probiotic administration, B. longum BB536 and L. rhamnosus HN001 load was increased in the majority of subjects in both preprandial and post-prandial groups. This increase was found also 1 mo after the end of probiotic oral intake in both groups, if compared to samples collected before probiotic consumption. At phyla level a significant decrease in Firmicutes abundance was detected immediately after 1-mo of B. longum BB536 and L. rhamnosus HN001 oral intake. This reduction persisted up to 1 mo after the end of probiotic oral intake together with a significant decrease of Proteobacteria abundance if compared to samples collected before probiotic administration. Whereas, at species level, a higher abundance of Blautia producta, Blautia wexlerae and Haemophilus ducrey was observed, together with a reduction of Holdemania filiformis, Escherichia vulneris, Gemmiger formicilis and Streptococcus sinensis abundance. In addition, during follow-up period we observed a further reduction in Escherichia vulneris and Gemmiger formicilis, together with a decrease in Roseburia faecis and Ruminococcus gnavus abundance. Conversely, the abundance of Akkermansia muciniphila was increased if compared to samples collected at the beginning of the experimental time course CONCLUSION B. longum BB536 and L. rhamnosus HN001 showed the ability to modulate the gut microbiota composition, leading to a significant reduction of potentially harmful bacteria and an increase of beneficial ones. Further studies are needed to better understand the specific mechanisms involved in gut microbiota modulation.Marco Toscano Roberta De Grandi Laura Stronati Elena De Vecchi Lorenzo Drago 2017World Journal of Gastroenterology2017,23,15:14
12S100B protein in tissue development,repair and regeneration显示文摘The Ca 2+-binding protein of the EF-hand type,S100B,exerts both intracellular and extracellular regulatory activities.As an intracellular regulator,S100B is involved in the regulation of energy metabolism,transcription,protein phosphorylation,cell proliferation,survival,differentiation and motility,and Ca 2+ homeostasis,by interacting with a wide array of proteins(i.e.,enzymes,enzyme substrates,cytoskeletal subunits,scaffold/adaptor proteins,transcription factors,ubiquitin E3 ligases,ion channels) in a restricted number of cell types.As an extracellular signal,S100B engages the pattern recognition receptor,receptor for advanced glycation end-products(RAGE),on immune cells as well as on neuronal,astrocytic and microglial cells,vascular smooth muscle cells,skeletal myoblasts and cardiomyocytes.However,RAGE may not be the sole receptor activated by S100B,the protein being able to enhance bFGF-FGFR1 signaling by interacting with FGFR1-bound bFGF in particular cell types.Moreover,extracellular effects of S100B vary depending on its local concentration.Increasing evidence suggests that at the concentration found in extracellular fluids in normal physiological conditions and locally upon acute tissue injury,which is up to a few nM levels,S100B exerts trophic effects in the central and peripheral nervous system and in skeletal muscle tissue thus participating in tissue homeostasis.The present commentary summarizes results implicating intracellular and extracellular S100B in tissue development,repair and regeneration.Guglielmo Sorci Francesca Riuzzi Cataldo Arcuri Claudia Tubaro Roberta Bianchi Ileana Giambanco Rosario Donato 2013World Journal of Biological Chemistry2013,4,1:14
13Activation of Defense Response Pathways by OGs and Fig22 Elicitors in Arabidopsis Seedlings显示文摘Carine Denoux Roberta Galletti Nicole Mammarella Suresh Gopalan Danièle Werck Giulia De Lorenzo Simone Ferrari Frederick M. Ausubel Julia Dewdney 2008Molecular Plant2008,1,3:13
14Post-endoscopic retrograde cholangio-pancreatography pancreatitis:Is time for a new preventive approach?显示文摘Acute pancreatitis is the most common serious complication of endoscopic retrograde cholangio-pancre-atography (ERCP) and its incidence may exceed 25% in some high-risk patient subsets. In some patients, pancreatitis may follow a severe course with pancreatic necrosis, multiorgan failure, permanent disability and even death. Hence, approaches which minimize both the incidence and severity of post-ERCP pancreatitis are worth pursuing. Pancreatic stents have been used with some success in the prevention of post-ERCP, while so far pharmacological trials have yielded disappointing results. A recent multicenter, randomized, placebo-controlled, double-blind trial has shown that rectally administered indomethacin is effective in reducing the incidence of post-ERCP pancreatitis, the occurrence of episodes of moderate-to-severe pancreatitis and the length of hospital stay in high-risk patients. These results together with the demonstration that rectal administration of indomethacin is not associated with en-hanced risk of bleeding strongly support the use of this drug in the prophylaxis of post-ERCP pancreatitis.Stella Tammaro Roberta Caruso Francesco Pallone Giovanni Monteleone 2012World Journal of Gastroenterology2012,18,34:13
15Human cytomegalovirus and Epstein-Barr virus infection in inflammatory bowel disease:Need for mucosal viral load measurement显示文摘AIM:To evaluate the best diagnostic technique and risk factors of the human Cytomegalovirus(HCMV)and Epstein-Barr virus(EBV)infection in inflammatory bowel disease(IBD).METHODS:A cohort of 40 IBD patients(17 refractory)and 40 controls underwent peripheral blood and endoscopic colonic mucosal sample harvest.Viral infection was assessed by quantitative real-time polymerase chain reaction and immunohistochemistry,and correlations with clinical and endoscopic indexes of activity,and risk factors were investigated.RESULTS:All refractory patients carried detectable levels of HCMV and/or EBV mucosal load as comparedto 13/23(56.5%)non-refractory and 13/40(32.5%)controls.The median DNA value was significantly higher in refractory(HCMV 286 and EBV 5.440 copies/105cells)than in non-refractory(HCMV 0 and EBV 6copies/105 cells;P<0.05 and<0.001)IBD patients and controls(HCMV and EBV 0 copies/105 cells;P<0.001 for both).Refractory patients showed DNA peak values≥103 copies/105 cells in diseased mucosa in comparison to non-diseased mucosa(P<0.0121 for HCMV and<0.0004 for EBV),while non-refractory patients and controls invariably displayed levels below this threshold,thus allowing us to differentiate viral colitis from mucosal infection.Moreover,the mucosal load positively correlated with the values found in the peripheral blood,whilst no correlation with the number of positive cells at immunohistochemistry was found.Steroid use was identified as a significant risk factor for both HCMV(P=0.018)and EBV(P=0.002)colitis.Finally,a course of specific antiviral therapy with ganciclovir was successful in all refractory patients with HCMV colitis,whilst refractory patients with EBV colitis did not show any improvement despite steroid tapering and discontinuation of the other medications.CONCLUSION:Viral colitis appeared to contribute to mucosal lesions in refractory IBD,and its correct diagnosis and management require quantitative real-time polymerase chain reaction assay of mucosal specimens.Rachele Ciccocioppo Francesca Racca Stefania Paolucci Giulia Campanini Lodovica Pozzi Elena Betti Roberta Riboni Alessandro Vanoli Fausto Baldanti Gino Roberto Corazza 2015World Journal of Gastroenterology2015,21,6:12
16Antitumor effects of the benzophenanthridine alkaloid sanguinarine: Evidence and perspectives显示文摘Historically, natural products have represented a significant source of anticancer agents, with plant-derived drugs becoming increasingly explored. In particular, sanguinarine is a benzophenanthridine alkaloid obtained from the root of Sanguinaria canadensis, and from other poppy Fumaria species, with recognized anti-microbial, anti-oxidant and anti-inflammatory properties. Recently, increasing evidence that sanguinarine exibits anticancer potential through its capability of inducing apoptosis and/or antiproliferative effects on tumor cells, has been proved. Moreover, its antitumor seems to be due not only to its pro-apoptotic and inhibitory effects on tumor growth, but also to its antiangiogenic and anti-invasive properties. Although the precise mechanisms underlying the antitumor activity of this compound remain not fully understood, in this review we will focus on the most recent findings about the cellular and molecular pathways affected by sanguinarine, together with the rationale of its potential application in clinic. The complex of data currently available suggest the potential application of sanguinarine as an adjuvant in the therapy of cancer, but further pre-clinical studies are needed before such an antitumor strategy can be effectively translated in the clinical practice.Roberta Gaziano Gabriella Moroni Cristina Buè Martino Tony Miele Paola Sinibaldi-Vallebona Francesca Pica 2016World Journal of Gastrointestinal Oncology2016,8,1:11
17关于孤立特发性中枢性性腺功能低下(ICH)遗传病因的新发现显示文摘特发性低促性腺激素性性功能减退症(IHH)是一种罕见的疾病,它的病症表现为青春期的推迟或者缺失,以及(或者)不育症。这些病症是由于促性腺激素释放激素(GnRH)的作用未能对正常的垂体.性腺轴产生足够的刺激。由于罹患该病的患者体内的促卯泡激素(FSH)和黄体生成素(LH)的水平偏低或正常,所以采用孤立特发性中枢性性腺功能低下(ICH)这一术语定义该疾病可能更为合适。该疾病应区别于伴有其它垂体缺陷的中枢性性腺功能减退。孤立特发性中枢性性腺功能低下的发病机制比较复杂,且在男性中的发病率比中枢性性腺功能减退多5倍。大部分情况下,该病的患病人群比较分散,但也曾经报道过几例家族病例。这一发现加上其它很多致病基因突变的调查,以及一些基因敲除模型的出现,证明了该疾病的发病可能有一个强大的遗传学因素存在。孤立特发性中枢性性腺功能低下可能与一些包含锇缺乏在内的形态遗传学异常有关联,而锇缺乏与孤立特发性中枢性性腺功能低下构成了卡尔曼氏综合症(KS)的主要病征。在全部的孤立特发性中枢性性腺功能低下病例中,卡尔曼氏综合症约占40%,也被视作一个特殊的患者子群体。然而,经过对患有孤立的锇缺陷或者卡尔曼氏综合症(KS)亦或孤立特发性中枢性性腺功能低下的包含亲戚在内的几个家族谱系内部的病患的调查,证明孤立特发性中枢性性腺功能低下是一种复杂的遗传性疾病,它具有复杂多样的表征以及显性。由此得出,不管是多个基因变异还是环境因素或者核外遗传的变化都有可能导致复杂多样的病征。本文综述了己知的、与孤立特发性中枢性性腺功能低下的发病机制相关的遗传机制,并且对由意大利孤立特发性中枢性性腺功能低下网络合作中心所收集的227例病例作出临床概述。Marco Bonomi Domenico Vladimiro Libri Fabiana Guizzardi Elena Guarducci Elisabetta Maiolo Elisa Pignatti Roberta Asci Luca Persani 2012Asian Journal of Andrology2012,14,1:10
18A rationale for the development of thermally stable nanostructured CeO_2-ZrO_2-containing mixed oxides显示文摘CeO2-ZeO2 solid solutions are extensively used as oxygen storage promoters in the current automotive three-way catalysts. High thermal stability of the textural properties is one of the most important requirements for practical application since temperatures up to 1273 K are easily experienced by these materials under real working conditions. In the present paper, we investigated how hydrothermal treatments applied to cakes of doped and undoped ZrO2-rich CeO2-ZrO2 precursors might improve the thermal stability of the final CeO2-ZrO2 solid so- lution. A rationale was developed that allowed to correlate the morphology of the hydrothermally treated cake with the thermal stability at 1273 K of the final product, which did not depend on the composition of the mixed oxides.Roberta Di Monte Jan Kapar Heather Bradshaw Colin Norman 2008Journal of Rare Earths2008,26,2:10
19Oral frailty and neurodegeneration in Alzheimer’s disease显示文摘Frailty is a critical intermediate status of the aging process with a multidimensional and multisystem nature and at higher risk for adverse health-related outcomes,including falls,disability,hospitalizations,institutionalization,mortality,dementia,and Alzheimer’s disease.Among different frailty phenotypes,oral frailty has been recently suggested as a novel construct defined as a decrease in oral function with a coexisting decline in cognitive and physical functions.We briefly reviewed existing evidence on operational definitions of oral frailty,assessment and screening tools,and possible relationships among oral frailty,oral microbiota,and Alzheimer’s disease neurodegeneration.Several underlying mechanism may explain the oral health-frailty links including undernutrition,sarcopenia linked to both poor nutrition and frailty,psychosocial factors,and the chronic inflammation typical of oral disease.Oral microbiota may influence Alzheimer’s disease risk through circulatory or neural access to the brain and the interplay with periodontal disease,often causing tooth loss also linked to an increased Alzheimer’s disease risk.On this bases,COR388,a bacterial protease inhibitor targeting Porphyromonas gingivalis implicated in periodontal disease,is now being tested in a double-blind,placebocontrolled Phase II/III study in mild-to-moderate Alzheimer’s disease.Therefore,oral status may be an important contributor to general health,including Alzheimer’s disease and latelife cognitive disorders,suggesting the central role of preventive strategies targeting the novel oral frailty phenotype and including maintenance and improvement of oral function and nutritional status to reduce the burden of both oral dysfunction and frailty.Vittorio Dibello Madia Lozupone Daniele Manfredini Antonio Dibello Roberta Zupo Rodolfo Sardone Antonio Daniele Frank Lobbezoo Francesco Panza 2021Neural Regeneration Research2021,16,11:10
20Extraintestinal manifestations in a large series of Italian inflammatory bowel disease patients显示文摘AIM:To investigate prevalence,type and time of onset of extraintestinal manifestations(EIMs)in a series of Italian inflammatory bowel disease(IBD)patients.METHODS:Data of 811 IBD consecutive patients,first referred to our Centre from 2000 to 2011,were retrospectively evaluated.RESULTS:Eight hundred and eleven IBD patients(437M,374 F)were studied:595 ulcerative colitis(UC)(73.4%)and 216 Crohn’s disease(CD)(26.6%).Among these,329(40.6%)showed EIMs:210 UC(35.3%)and119 CD(55.1%)(P<0.0001).Considering the time of the diagnosis of IBD,37 EIMs(11.2%)were developed before,229(69.6%)after and 63(19.2%)were simultaneous.The type of EIM were as follows:240 musculoskeletal(29.6%),in 72 CD patients and in 168 UC(P<0.0001);47 mucocutaneous(5.8%),in 26 CD and in21 UC(P=0.0049);26 ocular(3.2%),in 16 CD and in10 UC(CD 7.4%vs UC 1.7%,P=0.0093);6 hepatobiliary(0.8%);10 endocrinological(1.2%).In particular,with regards to the involvement of the musculoskeletal system,arthritis Type 1 was found in 41 CD(19%)and in 61 UC(10.2%)(P=0.0012)and Type 2 in 25 CD(11.6%)and in 100 UC(16.8%)(P=0.0012).CONCLUSION:Mucocutaneous manifestations,arthritis Type 1 and uveitis were significantly more frequent in CD than UC.The complications of the musculoskeletal system were the mostly observed ones,often with symptoms more severe than intestinal ones,confirming the need for close cooperation with rheumatologists.Maddalena Zippi Claudia Corrado Roberta Pica Eleonora Veronica Avallone Claudio Cassieri Daniela De Nitto Paolo Paoluzi Piero Vernia 2014World Journal of Gastroenterology2014,20,46:10
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