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| 1 | Efficacy of rituximab in gastric diffuse large B cell lymphoma patients显示文摘AIM:To evaluate retrospectively the efficacy of rituximab plus chemotherapy in gastric diffuse large B cell lymphoma(DLBCL).METHODS:Sixty patients(median age:58 years)with histologically confirmed gastric DLBCL treated at four Italian institutions between 2000 and 2007,were included in this analysis.Patients were selected by stage (Ⅰ-Ⅳ,Lugano staging system),European Cooperative Oncology Group performance status(0-2)and treatment strategies.Treatment strategies were chemotherapy alone(group A,n=30)[scheduled as cyclophosphamide,doxorubicin,vincristine and prednisone (CHOP)and CHOP-like],and chemotherapy combined with rituximab(group B,n=30).The primary end point of the study was complete response(CR)rate;the secondary end points were disease-free survival (DFS)at 5 years and overall survival(OS).RESULTS:Median follow-up was 62 mo(range:31102 mo).We observed a significant difference between the two groups(A vs B)in terms of CR[76.6%(23/30) vs 100%,P=0.04)and DFS at 5 years[73.3%(22/30) vs 100%,P=0.03).To date,19 group A(63.3%) patients are alive and 11 have died,while all group B patients are alive.No significant differences in toxicity were observed between the two groups.CONCLUSION:Rituximab in combination with chemotherapy improves CR rate,DFS and OS.Further prospective trials are needed to confirm our results. | Davide Leopardo Giuseppe Di Lorenzo Amalia De Renzo Piera Federico Serena Luponio Carlo Buonerba Elide Matano Gerardina Merola Martina Imbimbo Enzo Montesarchio Antonio Rea Maria Carmela Merola Sabino De Placido Giovannella Palmieri | 2010 | World Journal of Gastroenterology2010，16，20： | 19 |
| 2 | Metabolic aspects of adult patients with nonalcoholic fatty liver disease显示文摘Nonalcoholic fatty liver disease(NAFLD) is a major cause of chronic liver disease and it encompasses a spectrum from simple steatosis to steatohepatitis, fibrosis, or cirrhosis. The mechanisms involved in the occurrence of NAFLD and its progression are probably due to a metabolic profile expressed within the context of a genetic predisposition and is associated with a higher energy intake. The metabolic syndrome(MS) is a cluster of metabolic alterations associated with an increased risk for the development of cardiovascular diseases and diabetes. NAFLD patients have more than one feature of the MS, and now they are considered the hepatic components of the MS. Several scientific advances in understanding the association between NAFLD and MS have identified insulin resistance(IR) as the key aspect in the pathophysiology of both diseases. In the multi parallel hits theory of NAFLD pathogenesis, IR was described to be central in the predisposition of hepatocytes to be susceptible to other multiple pathogenetic factors. The recent knowledge gained from these advances can be applied clinically in the prevention and management of NAFLD and its associated metabolic changes. The present review analyses the current literature and highlights the new evidence on the metabolic aspects in the adult patients with NAFLD. | Ludovico Abenavoli Natasa Milic Laura Di Renzo Tomislav Preveden Milica Medi?-Stojanoska Antonino De Lorenzo | 2016 | World Journal of Gastroenterology2016，22，31： | 17 |
| 3 | Reconfigurable intelligent surfaces for smart wireless environments:channel estimation,system design and applications in 6G networks显示文摘Reconfigurable intelligent surface(RIS),one of the key enablers for the sixth-generation(6G)mobile communication networks,is considered by designers to smartly reconfigure the wireless propagation environment in a controllable and programmable manner.Specifically,an RIS consists of a large number of low-cost and passive reflective elements(REs)without radio frequency chains.The system gain of RIS wireless systems can be achieved by adjusting the phase shifts and amplitudes of the REs so that the desired signals can be added constructively at the receiver.However,an RIS typically has limited signal processing capability and cannot perform active transmitting/receiving in general,which leads to new challenges in the physical layer design of RIS wireless systems.In this paper,we provide an overview of the RIS-aided wireless systems,including the reflection principle,channel estimation,and system design.In particular,two types of emerging RIS systems are considered:RIS-aided wireless communications(RAWC)and RISbased information transmission(RBIT),where the RIS plays the role of the reflector and the transmitter,respectively.We also envision the potential applications of RIS in 6G networks. | Ying-Chang LIANG Jie CHEN Ruizhe LONG Zhen-Qing HE Xianqi LIN Chenlu HUANG Shilin LIU Xuemin(Sherman)SHEN Marco DI RENZO | 2021 | Science China(Information Sciences)2021，64，10： | 12 |
| 4 | Sonographic markers for early diagnosis of fetal malformations显示文摘Fetal malformations are very frequent in industrialized countries.Although advanced maternal age may affect pregnancy outcome adversely,80%-90%of fetal malformations occur in the absence of a specific risk factor for parents.The only effective approach for prenatal screening is currently represented by an ultrasound scan.However,ultrasound methods present two important limitations:the substantial absence of quantitative parameters and the dependence on the sonographer experience.In recent years,together with the improvement in transducer technology,quantitative and objective sonographic markers highly predictive of fetal malformations have been developed.These markers can be detected at early gestation(11-14 wk)and generally are not pathological in themselves but have an increased incidence in abnormal fetuses.Thus,prenatal ultrasonography during the second trimester of gestation provides a'genetic sonogram',including,for instance,nuchal translucency,short humeral length,echogenic bowel,echogenic intracardiac focus and choroid plexus cyst,that is used to identify morphological features of fetal Down’s syndrome with a potential sensitivity of more than 90%.Other specific and sensitive markers can be seen in the case of cardiac defects and skeletal anomalies.In the future,sonographic markers could limit even more the use of invasive and dangerous techniques of prenatal diagnosis(amniocentesis,etc.). | Maria Daniela Renna Paola Pisani Francesco Conversano Emanuele Perrone Ernesto Casciaro Gian Carlo Di Renzo Marco Di Paola Antonio Perrone Sergio Casciaro | 2013 | World Journal of Radiology2013，5，10： | 12 |
| 5 | Acute hepatitis C virus infection in a nurse trainee following a needlestick injury显示文摘Hepatitis C virus(HCV) infection after biological accident(needlestick injury) is a rare event.This report describes the first case of acute HCV infection after a needlestick injury in a female nursing student at Padua University Hospital.The student nurse was injured on the second finger of the right hand when recapping a 23-gauge needle after taking a blood sample.The patient who was the source was a 72-year-old female with weakly positive anti-HCV test results.Three months after the injury,at the second step of followup,a relevant increase in transaminases with a low viral replication activity(350 IU/mL) was observed in the student,indicating HCV infection.The patient tested positive for the same genotype(1b) of HCV as the injured student.A rapid decline in transaminases,which was not accompanied by viral clearance,and persistently positive HCV-RNA was described 1 mo later.Six months after testing positive for HCV,the student was treated with pegylated interferon plus ribavirin for 24 wk.A rapid virological response was observed after 4 wk of treatment,and a sustained virological response(SVR) was evident 6 mo after therapy withdrawal,confirming that the patient was definitively cured.Despite the favourable IL28B gene(rs12979860) CC-polymorphism observed in the patient,which is usually predictive of a spontaneous clearance and SVR,spontaneous viral clearance did not take place;however,infection with this genotype was promising for a sustained virological response after therapy. | Renzo Scaggiante Liliana Chemello Roberto Rinaldi Giovanni Battista Bartolucci Andrea Trevisan | 2013 | World Journal of Gastroenterology2013，19，4： | 11 |
| 6 | Prognostic factors for recurrence of gastrointestinal bleeding due to Dieulafoy's lesion显示文摘AIM:To analyze the effectiveness of the endoscopic therapy and to identify prognostic factors for recurrent bleeding.METHODS:Retrospective study of patients with gastrointestinal bleeding secondary to Dieulafoy's lesion(DL) from 2005 to 2011.We analyzed the demographic characteristics of the patients,risk factors for gastrointestinal bleeding,endoscopic findings,characteristics of the endoscopic treatment,and the recurrence of bleeding.We included cases in which endoscopy described a lesion compatible with Dieulafoy.We excluded patients who had potentially bleeding lesions such as angiodysplasia in other areas or had undergone other gastrointestinal endoscopic procedures.RESULTS:Twenty-nine patients with DL were identified.Most of them were men with an average age of 71.5 years.Fifty-five percent of the patients received antiaggregatory or anticoagulant therapy.The most common location for DL was the stomach(51.7%).The main type of bleeding was oozing in 65.5% of cases.In 27.6% of cases,there was arterial(spurting) bleeding,and 6.9% of the patients presented with an adherent clot.A single endoscopic treatment was applied to nine patients(31%);eight of them with adrenaline and one with argon,while 69% of the patients received combined treatment.Six patients(20.7%) presented with recurrent bleeding at a median of 4 d after endoscopy(interquartile range = 97.75).Within these six patients,the new endoscopic treatment obtained a therapeutic success of 100%.The presence of arterial bleeding at endoscopy was associated with a higher recurrence rate for bleeding(50% vs 33.3% for other type of bleeding) [P = 0.024,odds ratio(OR) = 8.5,95% CI = 1.13-63.87].The use of combined endoscopic treatment prevented the recurrence of bleeding(10% vs 44.4% of single treatment)(P = 0.034,OR = 0.14,95% CI = 0.19-0.99).CONCLUSION:Endoscopic treatment of DL is safe and effective.Adrenaline monotherapy and arterial(spurting) bleeding are associated with a high rate of bleeding recurrence. | Yuliana Jamanca-Poma Antonio Velasco-Guardado Concepción Piero-Pérez Renzo Calderón-Begazo Josue Umaa-Mejía Fernando Geijo-Martínez Antonio Rodríguez-Pérez | 2012 | World Journal of Gastroenterology2012，18，40： | 11 |
| 7 | Effect of perioperative blood transfusion on clinical outcomes in hepatic surgery for cancer显示文摘Allogeneic blood transfusion during liver resection for malignancies has been associated with an increased incidence of different types of complications: infectious complications, tumor recurrence, decreased survival. Even if there is clear evidence of transfusion-induced immunosuppression, it is difficult to demonstrate that transfusion is the only determinant factor that decisively affects the outcome. In any case there are several motivations to reduce the practice of blood transfusion. The advantages and drawbacks of different transfusion alternatives are reviewed here, emphasizing that surgeons and anesthetists who practice in centers with a high volume of liver resections, should be familiar with all the possible alternatives. | Gianlorenzo Dionigi Luigi Boni Francesca Rovera Stefano Rausei Salvatore Cuffari Giovanni Cantone Alessandro Bacuzzi Renzo Dionigi | 2009 | World Journal of Gastroenterology2009，15，32： | 10 |
| 8 | Levofloxacin/amoxicillin-based schemes vs quadruple therapy for Helicobacter pylori eradication in second-line显示文摘Worldwide prevalence of Helicobacter pylori(H.pylori) infection is approximately 50%,with the highest being in developing countries.We compared cure rates and tolerability(SE) of second-line anti-H.pylori levofloxacin/amoxicillin(LA)-based triple regimens vs standard quadruple therapy(QT).An English language literature search was performed up to October 2010.A meta-analysis was performed including randomized clinical trials comparing 7-or 10-d LA with 7-d QT.In total,10 articles and four abstracts were identified.Overall eradication rate in LA was 76.5%(95% CI:64.4%-97.6%).When only 7-d regimens were included,cure rate was 70.6%(95% CI:40.2%-99.1%),whereas for 10-d combinations,cure rate was significantly higher(88.7%;95% CI:56.1%-109.9%;P < 0.05).Main eradication rate for QT was 67.4%(95% CI:49.7%-67.9%).The 7-d LA and QT showed comparable efficacy [odds ratio(OR):1.09;95% CI:0.63-1.87],whereas the 10-d LA regimen was significantly more effective than QT(OR:5.05;95% CI:2.74-9.31;P < 0.001;I 2 = 75%).No differences were reported in QT eradication rates among Asian and European studies,whereas LA regimens were more effective in European populations(78.3% vs 67.7%;P = 0.05).Incidence of SE was lower in LA therapy than QT(OR:0.39;95% CI:0.18-0.85;P = 0.02).A higher rate of side effects was reported in Asian patients who received QT.Our findings support the use of 10-d LA as a simple second-line treatment for H.pylori eradication with an excellent eradication rate and tolerability.The optimal second-line alternative scheme might differ among countries depending on quinolone resistance. | Simona Di Caro Lucia Fini Yayha Daoud Fabio Grizzi Antonio Gasbarrini Antonino De Lorenzo Laura Di Renzo Sara McCartney Stuart Bloom | 2012 | World Journal of Gastroenterology2012，18，40： | 9 |
| 9 | Cardiac rehabilitation and mid-term follow-up after transcatheter aortic valve implantation显示文摘跟随大动脉的阀门培植(TAVI ) 通常基于的 transcatheter 的耐心的结果的 BackgroundEvaluation 幸存和临床的改进。生活的质量上的研究被限制,并且从在过程以后的全面评价的数据是在 TAVI 经历了在里面医院和在分泌物以后以后,病人们为心脏的康复提交了的 lacking.MethodsSixty 评估临床、功能、营养的地位的多维的评价,自治的度,认知缺陷,到康复的 life.ResultsOn 承认的消沉和质量,近似,病人的一半有严重功能的缺陷和依赖为在他们的医院停留期间,三分之一个个病人承受了重要临床的复杂并发症,二不得不被转移到培植中心。尽管有这,全面结果很好。所有留下的病人在分泌物是临床上稳定的,生活的功能的地位,自治和质量在大多数被改进。在 540 天的吝啬的后续期间(变化:192-738 天) ,五个病人从 noncardiac 原因死了,三为心脏的事件被就医,并且九为非心脏的原因。功能的地位和自治在病人的多数仍然保持令人满意,大多数继续到在 TAVI 经常是很脆弱的以后,为康复提交的实时 independently.ConclusionsPatients,与功能的缺陷,其它上的依赖和临床的复杂并发症的高风险的一个高等级。在一个康复计划期间,基于一个多维的评价和干预,大多数病人在功能的地位,生活的质量,和自治显示出重要改进,它在中间的后续期间在题目的多数仍然保持稳定。 | Renzo Zanettini Gemma Gatto Ileana Mori Maria Beatrice Pozzoni Stefano Pelenghi Luigi Martinelli Silvio Klugmann | 2014 | Journal of Geriatric Cardiology2014，11，4： | 8 |
| 10 | Effect of a counseling-supported treatment with the Mediterranean diet and physical activity on the severity of the non-alcoholic fatty liver disease显示文摘AIM To determine the clinical effectiveness of nutritional counseling on reduction of non-alcoholic fatty liver disease(NAFLD) severity, weight loss, metabolic and anthropometric indexes and liver enzymes.METHODS Forty-six adults with NAFLD received a 6-mo clinical and a dietary intervention(based on Mediterranean diet) carried out respectively by a gastroenterologist and a nutritionist with counseling license. The counseling process consisted of monthly meeting(about 45 min each). The effect of the treatment was evaluated monitoring liver enzymes, metabolic parameters, cardiovascular risk indexes, NAFLD severity [assessed by ultrasound(US)] and related indexes. All parameters were assessed at baseline. Biochemistry was also assessed at mid-and end-interventions and US was repeated at end-intervention.RESULTS The percentage of patients with steatosis grade equal or higher than 2 was reduced from 93% to 48% and steatosis regressed in 9 patients(20%). At the end of the treatment the end-point concerning the weight(i.e., a 7% weight reduction or achievement/maintenance of normal weight) was accomplished by 25 out of 46 patients(i.e., 54.3%). As far as the liver enzymes is concerned, all three liver enzymes significantly decrease during the treatment the normalization was particularly evident for the ALT enzyme(altered values reduced from 67% down to 11%). Several parameters, i.e., BMI, waist circumference, waist-to-hip ratio, AST, ALT, GGT, HDL, serum glucose, Tot-Chol/HDL, LDL/HDL, TG/HDL, AIP, HOMA, FLI, Kotronen index, VAI, NAFLD liver fat score and LAP, showed a significant improvement(P < 0.01) between baseline and end-treatment.CONCLUSION Outcomes of this study further strengthen the hypothesis that Med Diet and more active lifestyle can be considered a safe therapeutic approach for reducing risk and severity of NAFLD and related disease states. The proposed approach may be proposed as a valid and recommended approach for improving the clinical profile of NAFLD patients. | Chiara Gelli Mirko Tarocchi Ludovico Abenavoli Laura Di Renzo Andrea Galli Antonino De Lorenzo | 2017 | World Journal of Gastroenterology2017，23，17： | 8 |
| 11 | Endoscopic 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 | 2005 | World Journal of Gastroenterology2005，11，42： | 6 |
| 12 | Mesenteric adenitis caused by Yersinia pseudotubercolosis in a patient subsequently diagnosed with Crohn's disease of the terminal ileum显示文摘尽管在煽动性的肠疾病和胃肠的感染之间的协会被建议了,涉及 Crohn 的疾病(CD ) 的致病的机制仍然是未经决定的。我们报导以后与 Crohn 的疾病被诊断的一个人,开始由于 Yersinia pseudotubercolosis 感染与 mes 伤寒淋巴腺炎介绍了,的案例。这个案例遵守在建议那 CD 是在遗传上易受影响的个人连接到对伤寒细菌的反常有免疫力的回答的疾病的文学的最近的证据。 | Maddalena Zippi Maria Chiara Colaiacomo Adriana Marcheggiano Roberta Pica Paolo Paoluzi Giancarlo Iaiani Renzo Caprilli Francesca Maccioni | 2006 | World Journal of Gastroenterology2006，12，24： | 5 |
| 13 | From bariatric to metabolic surgery:Looking for a'diseasemodifier'surgery for type 2 diabetes显示文摘In this review the recent evolution of the comprehension of clinical and metabolic consequences of bariatric surgery is depicted. At the beginning bariatric surgery aim was a significant and durable weight loss. Later on, it became evident that bariatric surgery was associated with metabolic changes, activated by unknown pathways, partially or totally independent of weight loss. Paradigm of this 'metabolic' surgery is its effects on type 2 diabetes mellitus(T2DM). In morbid obese subjects it was observed a dramatic metabolic response leading to decrease blood glucose, till diabetes remission, before the achievement of clinically significant weight loss, opening the avenue to search for putative antidiabetic 'intestinal' factors. Both proximal duodenal(still unknown) and distal(GLP1) signals have been suggested as hormonal effectors of surgery on blood glucose decrease. Despite these findings T2 DM remission was never considered a primary indication for bariatric surgery but only a secondary one. Recently T2 DM remission in obese subjects with body mass index(BMI) greater than 35 has become a primary aim for surgery. This change supports the idea that 'metabolic surgery' definition could more appropriate than bariatric, allowing to explore the possibility that metabolic surgery could represent a 'disease modifier' for T2 DM. Therefore, several patients have undergone surgery with a primary aim of a definitive cure of T2 DM and today this surgery can be proposed as an alternative therapy. How much surgery can be considered truly metabolic is still unknown. To be truly 'metabolic' it should be demonstrated that surgery could cause T2 DM remission not only in subjects with BMI > 35 but also with BMI < 35 or even < 30. Available evidence on this topic is discussed in this mini-review. | Renzo Cordera Gian Franco Adami | 2016 | World Journal of Diabetes2016，7，2： | 3 |
| 14 | Smad3 knock-out mice as a useful model to study intestinal fibrogenesis显示文摘瞄准:为了在形态学和免疫评估可能的差别, CD3,转变生长因素 beta1 (TGF-beta1 ) , Smad7, alpha 光滑的肌肉肌动朊(alpha-Sma ) ,和骨胶原的组织化学的表示打 I-VII 小并且在 Smad3 空、野类型的老鼠的大肠。方法:十 0 和十只野类型的成年老鼠在年龄和机关的 4 瞬间被牺牲(食管,小、大的肠,输尿管) 为组织学被收集(苏木精和曙红,马森 thrichrome,染色的银) ,形态测定法和免疫组织化学分析。肠的织物 homogenates 的 TGF-beta1 层次被 ELISA 估计。结果:没有宏观的肠的损害在空、野类型的老鼠两个都被检测。组织学并且 morphometric 评估在肌肉层厚度揭示了重要减小小并且在空老鼠的大肠同样与野类型的老鼠相比。Immunohistochemistry 评估显示出染色在的 CD3+ T 房间, TGF-beta1 和 Smad7 的重要增加小并且 Smad3 空老鼠的大肠粘膜同样与野类型的老鼠相比。染色的 Alpha-Sma 和骨胶原 I-VII 小并且大肠没在二组老鼠之间不同。结肠的织物 homogenates 的 TGF-beta1 层次比在野类型的老鼠在空老鼠是显著地更高的。在初步的实验,导致 TNBS 的肠的纤维变性的重要减小作为与野类型的老鼠相比在空老鼠被观察。结论:Smad3 空老鼠是一个有用模型调查在肠的发炎和纤维变性表明小径的 TGF-beta/Smad 的在活体内角色。 | Giuliana Zanninelli Antonella Vetuschi Roberta Sferra Angela D'Angelo Amato Fratticci Maria Adelaide Continenza Maria Chiaramonte Eugenio Gaudio Renzo Caprilli Giovanni Latella | 2006 | World Journal of Gastroenterology2006，12，8： | 3 |
| 15 | Cardiovascular Function and Treatment in β-Thalassemia Major: A Consensus Statement From the American Heart Association显示文摘 | Dudley J. Pennell James E. Udelson Andrew E. Arai Biykem Bozkurt Alan R. Cohen Renzo Galanello Timothy M. Hoffman Michael S. Kiernan Stamatios Lerakis Antonio Piga John B. Porter John Malcolm Walker John Wood | 2013 | Circulation2013，，3： | 3 |
| 16 | New obesity classification criteria as a tool for bariatricsurgery indication显示文摘Obesity plays relevant pathophysiological role in the development of health problems, arising as result of complex interaction of genetic, nutritional, and metabolic factors. Due to the role of adipose tissue in lipid and glucose metabolism, and low grade inflammation, it is necessary to classify obesity on the basis of body fat composition and distribution, rather than the simply increase of body weight, and the Body Mass Index. The new term of adiposopathy(‘‘sick fat'') clearly defines the pathogenic role of adipose tissue. Four phenotypes of obese individuals have been described:(1) normal weight obese(NWO);(2) metabolically obese normal weight;(3) metabolically healthy obese; and(4) metabolically unhealthy obese or 'at risk' obese. Moreover, sarcopenic obesity has been related to all the phenotypes. The category of normal weight lean, represented by metabolically healthy normal weight has been classified to distinguish from NWO. It is crucial to recommend a bariatric surgery taking into account adiposopathy and sick fat that occurs with the expansion of fat mass, changing the inflammatory and metabolic profile of the patient. Body fat percentage and genetic polymorphism have to be evaluated to personalize the best bariatric surgery intervention. | Antonino De Lorenzo Laura Soldati Francesca Sarlo Menotti Calvani Nicola Di Lorenzo Laura Di Renzo | 2016 | World Journal of Gastroenterology2016，22，2： | 3 |
| 17 | Reconfiguring wireless environments via intelligent surfaces for 6G:reflection,modulation,and security显示文摘The reconfigurable intelligent surface(RIS)has been recognized as an essential enabling technology for sixth-generation(6G)mobile communication networks.An RIS comprises a large number of small and low-cost reflecting elements whose parameters can be dynamically adjusted with a programmable controller.Each of these elements can effectively reflect a phase-shifted version of the incident electromagnetic wave.By configuring the wave phases in real time,the propagation environment of the information-bearing signals can be dynamically manipulated to enhance communication reliability,boost transmission rate,expand cellular coverage,and strengthen communication security.In this study,we provide an overview on RIS-assisted wireless communications.Specifically,we elaborate on the state-of-the-art enabling techniques for the RIS technology as well as their corresponding substantial benefits from the perspectives of RIS reflection and RIS modulation.With these benefits,we envision the integration of RISs into emerging applications for 6G.In addition,communication security is of unprecedented importance in future 6G networks with ubiquitous wireless services in multifarious verticals and areas.We highlight potential contributions of RISs to physical-layer security,in terms of secrecy rate and secrecy outage probability,exemplified by a typical case study from both theoretical and numerical aspects.Finally,we discuss challenges and opportunities on the deployment of RISs in practice to motivate future research. | Jindan XU Chau YUEN Chongwen HUANG Naveed UL HASSAN George CALEXANDROPOULOS Marco DI RENZO Mérouane DEBBAH | 2023 | Science China(Information Sciences)2023，66，3： | 3 |
| 18 | Intensified intensity-modulated radiotherapy in anal cancer with prevalent HPV p16 positivity显示文摘AIM: To investigate the toxicity and response of intensity-modulated radiotherapy schedule intensified with a simultaneous integrated boost in anal canal cancer.METHODS: From March 2009 to March 2014, we retrospectively analyzed 41 consecutive patients treated with intensity-modulated radiotherapy(IMRT) and concurrent chemotherapy for anal canal squamous cell carcinoma at our center. Radiotherapy was delivered via simultaneous integrated boost(SIB) technique by helical tomotherapy, and doses were adapted to two clinical target volumes according to the tumor-nodemetastasis(TNM) stage: 50.6 Gy and 41.4 Gy in 23 fractions in T1N0, 52.8 Gy and 43.2 Gy in 24 fractionsin T2N0, and 55 Gy and 45 Gy in 25 fractions in all patients with N positive and/or ≥ T3, respectively, to planning target volumes 1 and 2. The most common chemotherapy regimen was 5-fluorouracil and mitomycin-based. Human papilloma virus(HPV) p16 expression was performed by immunohistochemistry and evaluated in the majority of patients. Acute and late toxicity was scored according to CTCAe v 3.0 and RTOG scales.RESULTS: The median follow-up was 30 mo(range:12-71). Median age was 63 years(range 32-84). The stage of disease was: stage Ⅰ in 2 patients, stage Ⅱin 13 patients, stage ⅢA in 12 patients, and stage ⅢB in 14 patients, respectively. Two patients were known to be HIV positive(4.9%). HPV p16 expression status was positive in 29/34(85.3%) patients. The 4-year progression-free survival and overall survival in HPVpositive patients were 78% and 92%, respectively.Acute grade 3 skin and gastrointestinal toxicities were reported in 5% and 7.3% of patients, respectively;patients' compliance to the treatment was good due to a low occurrence of severe acute toxicity, although treatment interruptions due to toxicity were required in 7.3% of patients. At 6 mo from end of treatment,36/40(90%) patients obtained complete response;during follow-up, 5(13.8%) patients presented with disease progression(local or systemic).CONCLUSION: In our experience, intensified SIBIMRT with chemotherapy is very feasible in clinical practice, with excellent results in terms of overall survival and local control. | Liliana Belgioia Stefano Vagge Dario Agnese Stefania Garelli Roberto Murialdo Giuseppe Fornarini Silvana Chiara Fabio Gallo Almalina Bacigalupo Renzo Corvò | 2015 | World Journal of Gastroenterology2015，21，37： | 2 |
| 19 | Size, trend, and policy implications of the underground economy显示文摘 | Renzo Orsi Davide Raggi Francesco Turino | 2012 | Review of Economic Dynamics2012，，： | 2 |
| 20 | Effect of epidural analgesia on labor and delivery: a retrospective study显示文摘 | Sandro Gerli Alessandro Favilli Marta M Acanfora Vittorio Bini Carla Giorgini Gian Carlo Di Renzo | 2011 | Journal of Maternal-Fetal and Neonatal Medicine2011，，3： | 2 |
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