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1Locally advanced nasopharyngeal carcinoma:Current and emerging treatment strategies显示文摘Although nasopharyngeal carcinoma(NPC)is a widespread malignant tumor,it is particularly frequent in Southeast Asia.Although T1 tumors can be effectively controlled with exclusive radiotherapy,this treatment modality is insufficient for most NPC patients,who present with locally advanced disease at diagnosis.In fact,for stages ranging from T2b N0 to T4 N3,definitive scientific evidence supports the use of concurrent platinum-based chemotherapy with standard external beam radiotherapy.This treatment approach has shown a statistically significant advantage in terms of overall survival,with respect to radiotherapy alone.Several trials have also investigated the use of neoadjuvant and adjuvant chemotherapy in combination with radiotherapy or chemo-radiotherapy.Platinum compounds,anthracyclines and taxanes are among the chemotherapy agents employed.This review focuses on the clinical results obtained in the field of adjuvant/concurrent/neoadjuvant chemotherapy for locally advanced NPC,for which exclusive concurrent chemo-radiotherapy currently represents the standard treatment approach.Francesco Perri Davide Bosso Carlo Buonerba Giuseppe Di Lorenzo Giuseppina Della Vittoria Scarpati 2011World Journal of Clinical Oncology2011,2,12:24
2Antidiabetic therapy and increased risk of hepatocellular carcinoma in chronic liver disease显示文摘AIM:To explore the association between hepatocellular carcinoma(HCC) and type 2 diabetes mellitus, describe the temporal relations between the onset of diabetes and the development of HCC and evaluate the possible effects of antidiabetic therapy on HCC risk.METHODS:We recruited 465 HCC patients, 618 with cirrhosis and 490 control subjects.We evaluated the odds ratio(OR) for HCC by univariate and multivariate analysis.Moreover, OR for HCC in diabetic subjects treated with insulin or sulphanylureas and with metformin were calculated.RESULTS:The prevalence of diabetes mellitus was 31.2% in HCC, 23.3% in cirrhotic patients and 12.7% in the Control group.By univariate and multivariate analysis, the OR for HCC in diabetic patients were respectively 3.12(CI 2.2-4.4, P < 0.001) and 2.2(CI 1.2-4.4, P = 0.01).In 84.9% of cases, type 2 diabetes mellitus was present before the diagnosis of HCC.Moreover, we report an OR for HCC of 2.99(CI 1.34-6.65, P = 0.007) in diabetic patients treated with insulin or sulphanylureas, and an OR of 0.33(CI 0.1-0.7, P = 0.006) in diabetic patients treated with metformin.CONCLUSION:Our study confi rms that type 2 diabetes mellitus is an independent risk factor for HCC and pre-exists in the majority of HCC patients.Moreover, in male patients with type 2 diabetes mellitus, our data shows a direct association of HCC with insulin and sulphanylureas treatment and an inverse relationship with metformin therapy.Valter Donadon Massimiliano Balbi Michela Ghersetti Silvia Grazioli Antonio Perciaccante Giovanni Della Valentina Rita Gardenal Maria Dal Mas Pietro Casarin Giorgio Zanette Cesare Miranda 2009World Journal of Gastroenterology2009,15,20:23
3Combined chemo-radiotherapy in locally advanced nasopharyngeal carcinomas显示文摘AIM:To provide efficacy and safety data about the combined use of radiotherapy and chemo-radiotherapy in nasopharyngeal carcinoma(NPC).METHODS:We reviewed data of 40 patients with locally advanced NPC treated with induction chemotherapy followed by concomitant chemo-radiotherapy(CCRT)(22/40 patients)or CCRT alone(18/40)from March 2006 to March 2012.Patients underwent fiberoscopy with biopsy of the primitive tumor,and computed tomography scan of head,neck,chest and abdomen with and without contrast.Cisplatin was used both as induction and as concomitant chemotherapy,while 3D conformal radiation therapy was delivered to the nasopharynx and relevant anatomic regions(total dose,70 Gy).The treatment was performed using 6 MV photons of the linear accelerator administered in 2 Gy daily fraction for five days weekly.This retrospective analysis was approved by the review boards of the participating institutions.Patients gave their consent to treatment and to anonymous analysis of clinical data.RESULTS:Thirty-three patients were males and 7 were females.Median follow-up time was 58 mo(range,1-92 mo).In the sub-group of twenty patients with a follow-up time longer than 36 mo,the 3-year survival and disease free survival rates were 85%and 75%,respectively.Overall response rate both in patients treated with induction chemotherapy followed by CCRT and in those treated with CCRT alone was 100%.Grade 3 neutropenia was the most frequent acute side-effect and it occurred in 20 patients.Grade 2 mucositis was seen in 29 patients,while grade 2 xerostomia was seen in 30 patients.Overall toxicity was manageable and it did not cause any significant treatment delay.In the whole sample population,long term toxicity included grade 2 xerostomia in 22 patients,grade 1 dysgeusia in 17 patients and grade 1 subcutaneous fibrosis in 30 patients.CONCLUSION:Both CCRT and induction chemotherapy followed by CCRT showed excellent activity in locally advanced NPC.The role of adjuvant chemotherapy remains to be defined.Francesco Perri Giuseppina Della Vittoria Scarpati Carlo Buonerba Giuseppe Di Lorenzo Francesco Longo Paolo Muto Concetta Schiavone Fabio Sandomenico Francesco Caponigro 2013World Journal of Clinical Oncology2013,4,2:22
4Efficacy and safety of endoscopic prophylactic treatment with undiluted cyanoacrylate for gastric varices显示文摘AIM:To evaluate the efficacy and safety of undiluted N-butyl-2 cyanoacrylate plus methacryloxysulfolane(NBCM)as a prophylactic treatment for gastric varices(GV)bleeding.METHODS:This prospective study was conducted at a single tertiary-care teaching hospital between October 2009 and March 2013.Patients with portal hypertension(PH)and GV,with no active gastrointestinal bleeding,were enrolled in primary prophylactic treatment with NBCM injection without lipiodol dilution.Initial diagnosis of GV was based on endoscopy and confirmed with endosonography(EUS); the same procedure was used after treatment to confirm eradication of GV.After puncturing the GV with a regular injection needle,1 mL of undiluted NBCM was injected intranasally into GV.The injection was repeated as necessary to achieve eradication or until a maximum total volume of 3 mL of NBCM had been injected.Patients were followed clinically and evaluated with endoscopy at 3,6 and 12 mo.Later follow-ups were performed yearly.The main outcome measures were efficacy(GV eradication),safety(adverse events related to cyanoacrylate injection),recurrence,bleeding from GV and mortality related to GV treatment.RESULTS:A total of 20 patients(15 male)with PH and GV were enrolled in the study and treated with undiluted NBCM injection.Only 2(10%)patients had no esophageal varices(EV); 18(90%)patients were treated with endoscopic band ligation to eradicate EV before inclusion in the study.The patients were followed clinically and endoscopically for a median of 31 mo(range:6-40 mo).Eradication of GV was observed in all patients(13 patients were treated with 1 session and 7 patients with 2 sessions),with a maximum injected volume of 2 mL NBCM.One patient had GV recurrence,confirmed by EUS,at 6-mo follow-up,and another had late recurrence with GV bleeding after 35 mo of follow-up; overall,GV recurrence was observed in 2 patients(10%),after 6 and 35 mo of follow-up,and GV bleeding rate was 5%(1 patient).Mild epigastric pain was reported by 3 patients(15%).No mortality or major complications,including embolism,or damage to equipment were observed.CONCLUSION:Endoscopic injection with NBCM,without lipiodol,may be a safe and effective treatment for primary prophylaxis of gastric variceal bleeding.Matheus Cavalcante Franco Gustavo Flores Gomes Frank Shigeo Nakao Gustavo Andrade de Paulo Angelo Paulo Ferrari Jr Ermelindo Della Libera Jr 2014World Journal of Gastrointestinal Endoscopy2014,6,6:16
5Implication of the Hedgehog pathway in hepatocellular carcinoma显示文摘The prognosis for patients who are diagnosed with advanced stage hepatocellular carcinoma(HCC)is poor because there are few treatment options.Recent research has focused on the identification of novel molecular entities that can be targeted to inhibit oncogenic signals that are involved in the carcinogenesis,proliferation and progression of HCC.Among all of the pathways that are involved in the development of HCC,Hedgehog(HH)signalling has demonstrated a substantial role in hepatocarcinogenesis and HCC progression.HH plays a physiological role in embryogenesis,through the induction of the differentiation of hepatocytes from endodermal progenitors.The re-activation of the HH pathway in chronic damaged liver is a mechanism of fibrotic degeneration and is implicated in various stages of HCC development.HH activation sustains the subpopulation of immature liver epithelial cells that are involved in the pathogenesis of cirrhosis and HCC,and HH itself is a mediator of the alcohol-derived malignant transformation of liver cells.High levels of expression of HH protein markers in liver tumour tissues are correlated with aggressive histological and biological features and a poor clinical outcome.In vitro and in vivo inhibition models of the HH pathway confirm that HH is essential in maintaining tumour growth,metastasis and a mesenchymal phenotype.Carminia Maria Della Corte Giuseppe Viscardi Federica Papaccio Giovanna Esposito Giulia Martini Davide Ciardiello Erika Martinelli Fortunato Ciardiello Floriana Morgillo 2017World Journal of Gastroenterology2017,23,24:10
6多重血栓预防方案在髋关节置换中的应用显示文摘目的:评价多重血栓预防方案在髋关节置换运用的有效性和安全性。方法:收集从2006年1月到2010年5月在纽约特种外科医院(Hospital for Special Surgery,HSS)行全髋关节置换手术患者共993例,其中男473例,女529例。通过针对血栓形成的各种原因和不同时相,采用多重血栓预防方案。结果:13例发生血栓性疾病(VTE),发生率1.3%。确诊为DVT的10例,发生率为1%。诊断为PE的有3例,发生率为0.3%。没有一个为致命性的PE。接受阿司匹林的患者中7例发生VTE,占接受阿司匹林治疗患者的0.9%,其中下肢深静脉血栓4例,有症状的肺栓塞3例;接受华法林的患者中6个发生VTE,占接受华法林治疗患者的2%,其中下肢深静脉血栓5,有症状肺栓塞1例。结论:人工髋关节置换患者采用此多重血栓预防方案,血栓(包括深静脉血栓和肺栓塞)的发生率很低,安全可靠,抗凝药口服与此相关的并发症也很低。鲁宁 杨阳 Alejandro González Della Valle Eduardo A.Salvati 2013实用医学杂志2013,29,14:8
7Optimal management of a patient with recurrent nasopharyngeal carcinoma显示文摘Nasopharyngeal carcinoma is rare in western countries, accounting for less than 1% of all malignancies. Despite prognosis is satisfactory for newly diagnosed, non-metastatic disease, management of recurrent disease is challenging, with a survival expectancy of approximately 6 mo with the use of chemotherapy as the sole salvage treatment. We report a case of recurrent nasopharyngeal carcinoma treated with a combination of chemotherapy, radiotherapy and surgery in the context of a multidisciplinary approach. A durable complete response was achieved.Francesco Perri Italo Dell’Oca Paolo Muto Concetta Schiavone Corrado Aversa Franco Fulciniti Raffaele Solla Giuseppina Della Vittoria Scarpati Carlo Buonerba Giuseppe Di Lorenzo Francesco Caponigro 2014World Journal of Clinical Cases2014,2,7:8
8多重方法预防髋膝关节置换术后的血栓性疾病显示文摘髋、膝关节置换术后有较高的发生血栓性疾病的危险。我们研究了一种多重预防方法,于1995年在纽约特种外科医院(Hospital for Special Surgery,HSS)开始运用。它包括术前对患者患血栓性疾病(VTE)的风险进行评估,然后根据评估结果在术前、术中、术后应用一系列安全有效的预防措施,以降低术后血栓和出血的风险。这些措施包括术前停用促凝血药物及患者的自体血采集;使用硬膜外低压麻醉,在全髋关节置换手术(THA)中股骨侧处理之前,静脉给予肝素;术后使用充气加压装置,患肢穿戴弹力袜并强有力地主动背伸和跖屈踝关节,同时尽早下床活动,以降低血液淤滞。如果这些措施能够很好地实施,对于术前没有VTE诱发因素且术后能早期活动的患者,不需要术后使用强效的抗凝药物,从而减少常规使用抗凝药物导致的并发症发病率和死亡率以及医疗费用。此方法已在近万例髋、膝关节置换术患者中应用,结果显示血栓、出血发生率以及总死亡率均很低。Alejandro González Della Valle Francis Jeshira Reynoso Judith Ben Ari Eduardo Salvati 鲁宁 2011中华关节外科杂志(电子版)2011,5,2:7
9Present and future of metastatic colorectal cancer treatment: A review of new candidate targets显示文摘In the last two decades, great efforts have been made in the treatment of metastatic colorectal cancer(m CRC) due to the approval of new target agents for cytotoxic drugs. Unfortunately, a large percentage of patients present with metastasis at the time of diagnosis or relapse after a few months. The complex molecular heterogeneity of this disease is not completely understood; to date, there is a lack of predictive biomarkers that can be used to select subsets of patients who may respond to target drugs. Only the RAS-mutation status is used to predict resistance to anti-epidermal growth factor receptor agents in patients with m CRC. In this review, we describe approved targeted therapies for the management of metastatic m CRC and discuss new candidate targets on the horizon.Giulia Martini Teresa Troiani Claudia Cardone Pietropaolo Vitiello Vincenzo Sforza Davide Ciardiello Stefania Napolitano Carminia Maria Della Corte Floriana Morgillo Antonio Raucci Antonio Cuomo Francesco Selvaggi Fortunato Ciardiello Erika Martinelli 2017World Journal of Gastroenterology2017,23,26:7
10Mechanisms of resistance to anti-epidermal growth factor receptor inhibitors in metastatic colorectal cancer显示文摘The prognosis of patients with metastatic colorectal cancer(m CRC) remain poor despite the impressive improvement of treatments observed over the last 20 years that led to an increase in median overall survival from 6 mo, with the only best supportive care, to approximately 30 mo with the introduction of active chemotherapy drugs and targeted agents. The monoclonal antibodies(mo Abs) cetuximab and panitumumab, directed against the epidermal growth factor receptor(EGFR), undoubtedly represent a major step forward in the treatment of m CRC, given the relevant efficacy in terms of progression-free survival, overall survival, response rate, and quality of life observed in several phase Ⅲ clinical trials among different lines of treatment. However, the anti-EGFR mo Abs were shown only to be effective in a subset of patients. For instance, KRAS and NRAS mutations have been identified as biomarkers of resistance to these drugs, improving the selection of patients who might derive a benefit from these treatments. Nevertheless, several other alterations might affect the response to these drugs, and unfortunately, even the responders eventually become resistant by developing secondary(or acquired) resistance in approximately 13-18 mo. Several studies highlighted that the landscape of responsible alterations of both primary and acquired resistance to anti-EGFR drugs biochemically converge into MEK-ERK and PIK3CA-AKT pathways. In this review, we describe the currently known mechanisms of primary and acquired resistance to anti-EGFR mo Abs together with the various strategies evaluated to prevent, overcame or revert them.Vincenzo Sforza Erika Martinelli Fortunato Ciardiello Valentina Gambardella Stefania Napolitano Giulia Martini Carminia della Corte Claudia Cardone Marianna L Ferrara Alfonso Reginelli Giuseppina Liguori Giulio Belli Teresa Troiani 2016World Journal of Gastroenterology2016,22,28:6
11Management of cholelithiasis in Italian children:A national multicenter study显示文摘AIM:To evaluate the management of Italian children with cholelithiasis observed at Pediatric and Surgical Departments linked to Italian Society of Pediatric Gastroenterology Hepatology and Nutrition. METHODS: One-hundred-eighty children (90 males, median age at diagnosis 7.3 years; range, 0-18 years) with echographic evidence of cholelithiasis were enrolled in the study; the data were collected by an anonymous questionnaire sent to participating centers. RESULTS: One hundred seventeen patients were treated with ursodeoxycholic acid; in 8 children dissolution of gallstones was observed, but the cholelithiasis recurred in 3 of them. Sixty-five percent of symptomatic children treated became asymptomatic. Sixty-four patients were treated with cholecystectomy and in only 2 cases a postoperative complication was reported. Thirty- four children received no treatment and were followed with clinical and echographic controls; in no case thedevelopment of complications was reported. CONCLUSION: The therapeutic strategies were extremely heterogeneous. Ursodeoxycholic acid was ineffective in dissolution of gallstones but it had a positive effect on the symptoms. Laparoscopic cholecystectomy was confirmed to be an efficacy and safe treatment for pediatric gallstones.Claudia Della Corte Diego Falchetti Gabriella Nebbia Marisa Calacoci Maria Pastore Ruggiero Francavilla Matilde Marcellini Pietro Vajro Raffaele Iorio 2008World Journal of Gastroenterology2008,14,9:6
12Endoscopic mucosal resection for high-grade dysplasia and intramucosal carcinoma in Barrett's esophagus: An Italian experience显示文摘AIM: To evaluate endoscopic mucosal resection (EMR)in patients with high-grade dysplasia (HGD) and/or intramucosal cancer (IMC) in Barrett's esophagus (BE).METHODS: Between June 2000 and December 2003,39 consecutive patients with HGD (35) and/or IMC (4)underwent EMR. BE >30 mm was present in 27 patients.In three patients with short segment BE (25.0%), HGDwas detected in a normal appearing BE. Lesions had a mean diameter of 14.8±10.3 mm. Mucosal resection was carried out using the cap method.RESULTS: The average size of resections was 19.7±9.4×14.6±8.2 mm. Histopathologic assessment postresection revealed 5 low-grade dysplasia (LGD) (12.8%),27 HGD (69.2%), 2 IMC (5.1%), and 5 SMC (-12.8%).EMR changed the pre-treatment diagnosis in 10 patients (25.6%). Three patients with SMC underwehtsurgery.Histology of the surgical specimen revealed 1 T0N0 and 2 T1N0 lesions. The remaining two patients were cancer free at 32.5 and 45.6 mo, respectively. A metachronous lesion was detected after 25 mo in one patient with HGD. Intra-procedural bleeding, controlled at endoscopy,occurred in four patients (10.3%). After a median followup of 34.9 mo, all patients remained in remission.CONCLUSION: In the medium term, EMR is effective and safe to treat HGD and/or IMC within BE and is a valuable staging method. It could become an alternative to surgery.Massimo Conio Alessandro Repici Renzo Cestari Sabrina Blanchi Gabriella Lapertosa Guido Missale Domenico Della Casa Vincenzo Villanacci Pier Gigi Calandri Rosangela Filiberti 2005World Journal of Gastroenterology2005,11,42:6
13Anaplastic thyroid carcinoma:A comprehensive review of current and future therapeutic options显示文摘Anaplastic thyroid carcinoma(ATC)is the rarest,but deadliest histologic type among thyroid malignancies,with a dismal median survival of 3-9 mo.Even though ATC accounts for less than 2%of all thyroid tumors,it is responsible for 14%-39%of thyroid carcinoma-related deaths.ATC clinically presents as a rapidly growing mass in the neck,associated with dyspnoea,dysphagia and vocal cord paralysis.It is usually locally advanced and often metastatic at initial presentation.For operable diseases,the combination of radical surgery with adjuvant radiotherapy or chemotherapy,using agents such as doxorubicin and cisplatin,is the best treatment strategy.Cytotoxic drugs for advanced/metastatic ATC are poorly effective.On the other hand,targeted agents might represent a viable therapeutic option.Axitinib,combretastatin A4,sorafenib and imatinib have been tested in small clinical trials of ATC,with a promising disease control rate ranging from 33%to 75%.Other clinical trials of targeted therapy for thyroid carcinoma are currently ongoing.Biological agents that are under investigation include pazopanib,gefitinib and everolimus.With the very limited therapeutic armamentarium available at the present time,targeted therapy constitutes an exciting new horizon for ATC.In future,biological agents will probably represent the standard of care for this aggressive malignancy,in the same fashion as it has recently occurred for other chemo-refractory tumors,such as kidney and hepatic cancer.Francesco Perri Giuseppe Di Lorenzo Giuseppina Della Vittoria Scarpati Carlo Buonerba 2011World Journal of Clinical Oncology2011,2,3:5
14硬膜外低压麻醉在髋关节置换中预防血栓性疾病的作用显示文摘目的研究全髋关节置换术中使用硬膜外低压麻醉的有效性和安全性。方法对993例全髋关节置换术采用硬膜外低压麻醉(平均动脉压维持在45~55 mm Hg)。处理股骨侧髓腔之前2~3 min,静脉给予肝素10~15 U/kg。结果本组平均手术时间83 min(35~268 min),平均失血量183 ml(50~1 400 ml)。术后随访3个月,共有13例发生血栓性疾病,占总数的1.3%,其中确诊为下肢深静脉血栓(DVT)的有10例,发生率为1.0%。无心血管疾病、硬膜外血肿发生。随访期间无死亡病例。结论全髋关节置换术中使用硬膜外低压麻醉安全,术中出血少,术后血栓发生率低,术后无相关的并发症。鲁宁 杨阳 思永玉 Nigel E Sharrock Alejandro González Della Valle Eduardo A.Salvati 2012中国骨与关节损伤杂志2012,27,12:5
15Ovarian cancer standard of care: are there real alternatives?显示文摘Ovarian cancer remains a major issue for gynecological oncologists, and most patients are diagnosed when the disease is already advanced with a poor chance of survival. Debulking surgery followed by platinum-taxane chemotherapy is the current standard of care, but based on several different strategies currently under evaluation, some encouraging data have been published in the last 4 to 5 years. This review provides a state-of-the-art overview of the available alternatives to conventional treatment and the most promising new combinations. For example, neoadjuvant chemotherapy does not seem to be inferior to primary debulking. Despite its outcome improvements, intraperitoneal chemotherapy struggles for acceptance due to the heavy toxicity. Dose-dense chemotherapy, after showing an impressive efficacy in Asian populations, has not produced equal results in a European cohort, and the results of alternative platinum doublets are not superior to those of carboplatin and paclitaxel. In this setting, adherence to a maintenance therapy after first-line treatment and multiple(primarily antiangiogenic) agents appears to be effective. Although many questions, including the duration of maintenance treatment and the use of bevacizumab beyond progression, remain unanswered, new biologic agents, such as poly(ADP-ribose) polymerase(PARP) inhibitors, nintedanib, and mitogen-activated protein/extracellular signal-regulated kinase(MEK) inhibitors, have emerged as potential therapeutic options in the very near future. Based on the multiplicity of available strategies, the histological and molecular features of the tumor, in addition to patient's clinical condition and disease state, continue to gain importance in guiding treatment choices.Chiara Della Pepa Giuseppe Tonini Carmela Pisano Marilena Di Napoli Sabrina Chiara Cecere Rosa Tambaro Gaetano Facchini Sando Pignata 2015Chinese Journal of Cancer2015,34,1:5
16When sepsis affects the heart: A case report and literature review显示文摘A 59-year-old nursing home patient with Down syndrome was brought to the internal medicine department of our hospital due to fever, cough without expectorate, and dyspnea. A thoracic computed tomography revealed the presence of bilateral basal parenchymal opacities. Her condition deteriorated after admission and troponin reached a peak serum concentration of 16.9 ng/m L. The patient was in cardiogenic shock. In addition to fluid resuscitation, vaso-active amine infusion was administered to achieve hemodynamic stabilization. The differential diagnosis investigated possible pulmonary embolism, myocardial infarction, and myocarditis. Furthermore, a second transthoracic echocardiogram suggested Tako-Tsubo syndrome. This is a septic patient. The purpose of this manuscript is to review studies which formerly examined the possible association between high levels of troponin and mortality to see if it can be considered a positive predictive factor of fatal prognosis as the case of thrombocytopenia, already a positive independent predictive factor of multiple organ failure syndrome, and generally to characterize risk profile in a septic patient.Giuseppe Clemente Antonino Tuttolomondo Daniela Colomba Rosaria Pecoraro Chiara Renda Vittoriano Della Corte Carlo Maida Irene Simonetta Antonio Pinto 2015World Journal of Clinical Cases2015,3,8:5
17Geomorphosites: Concepts,methods and examples of geomorphological survey显示文摘Some fundamental concepts on geosites and particularly on geomorphological assets (geomorphosites) are reviewed and a methodology for their survey and assessment is presented and pointed out. Also, a case study in the province of Modena is presented.Mario PanizzaDipartimento di Scienze della Terra, Universita degli Studi di Modena e Reggio Emilia, Largo S. Eufemia 19-41100, Modena, Italy (e-mail: pit?unimo.it) 2001Chinese Science Bulletin2001,46,S1:4
18Individualized hepatocellular carcinoma risk: The challenges for designing successful chemoprevention strategies显示文摘Hepatocellular carcinoma (HCC) develops in the context of environmental risk factors like chronic viral hepatitis, diabetes and alcohol exposure, often associated to an increased risk of cirrhosis. Antiviral treatments that are effective to counteract hepatitis B and C may also attenuate the risk of tumor development. However, since hepatitis B-related carcinogenesis is promoted independently of the onset of cirrhosis, such antiviral treatments as nucleo(t)side analogs can promote regression of cirrhosis, prevent clinical decompensation and variceal bleeding but not HCC. This means that in successfully treated patients with cirrhosis, HCC is often the consequence of their extended survival. In hepatitis C patients, a sustained virological response to interferon-based therapies can reduce the rate of HCC development, even in patients with cirrhosis who experience histological regression of their liver disease. Future therapies aimed at this endpoint in at risk populations should take into consideration pretreatment patient stratification for host, viral and environmental risk factors. In this context the recent discovery of single nucleotide polymorphisms involved in the immune system function and tumorigenesis, might permit enrollment of populations of patients enriched with HCC risk factors for targeted chemopreventive therapies. This could finally pave the way to personalized algorithms, as already seen in the diagnosis and treatment schemes for chemoprevention.Cristina Della Corte Alessio Aghemo Massimo Colombo 2013World Journal of Gastroenterology2013,19,9:4
19英语教学词典的历史、现状及未来显示文摘调典的历史 1935年,迈克尔·韦斯特的《新方法英语词典》(New method English Dictiortary)问世,这是第一部英语教学词典。迄今已有50多年的历史,当时人们便萌生了这样一个想法,即学英语的外国学生需要一种专门的英语词典。1961年,这部诃典再版,韦斯特在引论中写了这样一番话: “这本英语词典是专为外国人编写的。Della Summers 陈忠华 1990外语教学理论与实践1990,,1:4
20Immunohistochemical expression of intrarenal renin angiotensin system components in response to tempol in rats fed a high salt diet显示文摘AIM To determine the effect of tempol in normal rats fed high salt on arterial pressure and the balance between antagonist components of the renal renin-angiotensin system.METHODS Sprague-Dawley rats were fed with 8% Na Cl highsalt(HS) or 0.4% Na Cl(normal-salt,NS) diet for 3 wk,with or without tempol(T)(1 mmol/L,administered in drinking water). Mean arterial pressure(MAP),glomerularfiltration rate(GFR),and urinary sodium excretion(UVNa) were measured. We evaluated angiotensin Ⅱ(Ang Ⅱ),angiotensin 1-7(Ang 1-7),angiotensin converting enzyme 2(ACE2),mas receptor(Mas R),angiotensin type 1 receptor(AT1R) and angiotensin type 2 receptor(AT2R) in renal tissues by immunohistochemistry.RESULTS The intake of high sodium produced a slight but significant increase in MAP and differentially regulated components of the renal renin-angiotensin system(RAS). This included an increase in Ang Ⅱ and AT1 R,and decrease in ACE-2 staining intensity using immunohistochemistry. Antioxidant supplementation with tempol increased natriuresis and GFR,prevented changes in blood pressure and reversed the imbalance of renal RAS components. This includes a decrease in Ang Ⅱ and AT1 R,as increase in AT2,ACE2,Ang(1-7) and Mas R staining intensity using immunohistochemistry. In addition,the natriuretic effects of tempol were observed in NS-T group,which showed an increased staining intensity of AT2,ACE2,Ang(1-7) and Mas R.CONCLUSION These findings suggest that a high salt diet leads to changes in the homeostasis and balance between opposing components of the renal RAS in hypertension to favour an increase in Ang Ⅱ. Chronic antioxidant supplementation can modulate the balance between the natriuretic and antinatriuretic components of the renal RAS.Gabriel Cao Silvana Lorena Della Penna Nicolas Martín Kouyoumdzian Marcelo Roberto Choi Susana Gorzalczany Belisario Enrique Fernández Jorge Eduardo Toblli María Inés Roson 2017World Journal of Nephrology2017,6,1:4
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