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| 1 | Is ARFI elastography reliable for predicting fibrosis severity in chronic HCV hepatitis?显示文摘AIM:To determine whether acoustic radiation force impulse(ARFI) elastography is a reliable method for predicting fibrosis severity in patients with chronic hepatitis C virus(HCV) hepatitis.METHODS:We performed a multicenter study including 274 subjects with HCV chronic hepatitis in which we compared ARFI with liver biopsy(LB).In each patient we performed LB(evaluated according to the Metavir score) and ARFI measurements(using a Siemens Acuson S2000TM ultrasound system:10 valid measurements were performed and median values were calculated and expressed in meters/second(m/s).RESULTS:A direct,strong,correlation(Spearman r = 0.707) was found between ARFI measurements and fibrosis(P < 0.0001).For predicting the presence of fibrosis(F ≥ 1 Metavir),significant fibrosis(F ≥ 2),severe fibrosis(F ≥ 3) and cirrhosis(F = 4),the cutoff values of 1.19,1.21,1.58 and 1.82 m/s were determined,respectively,liver stiffness measurements had 73%,84%,84% and 91% Se respectively;93%,91%,94%,90% Sp,respectively;with AUROCs of 0.880,0.893,0.908 and 0.937,respectively.CONCLUSION:ARFI measurement is a reliable method for predicting the severity of fibrosis in HCV | Ioan Sporea Roxana Sirli Simona Bota Carmen Fierbinteanu-Braticevici Alina Popescu Radu Badea Monica Lupsor Ana Petrisor Mirela Dnil | 2011 | World Journal of Radiology2011，3，7： | 24 |
| 2 | Role of nitric oxide in the impairment of circular muscle contractility of distended, uninflamed mid-colon in TNBS-induced acute distal colitis in rats显示文摘AIM: To evaluate the role of nitric oxide (NO) in the motor disorders of the dilated uninflamed mid-colon (DUMC)from trinitrobenzene sulfonic acid (TNBS)-induced acute distal colitis in rats.METHODS: Colitis was induced in male Sprague-Dawley rats by a single intracolonic administration of TNBS.Control rats received an enema of 0.9% saline. The rats were killed 48 h after TNBS or saline administration.Macroscopic and histologic lesions of the colon were evaluated. Myeloperoxidase (MPO) and nitric oxide synthase (NOS) activity were measured on the colonic tissue. In TNBS rats, we evaluated spontaneous and evoked contractile activity in circular muscle strips derived from DUMC in comparison to the same colonic segment of control rats, both in the presence and in the absence of a non-selective NOS isoforms inhibitor N-nitro-Larginine (L-NNA). Pharmacological characterization of electric field stimulation (EFS)-evoked contractile responses was also performed.RESULTS: In TNBS rats, the distal colon showed severe histological lesions and a high MPO activity, while the DUMC exhibited normal histology and MPO activity.Constitutive NOS activity was similar in TNBS and control rats, whereas inducible NOS activity was significantly increased only in the injured distal colon of TNBS rats.Isometrically recorded mechanical activity of circular muscle strips from DUMC of TNBS rats showed a marked reduction of the force and frequency of spontaneous contractions compared to controls, as well as of the contractile responses to a contracting stimulus. In the presence of L-NNA, the contractile activity and responses displayed a significantly greater enhancement compared to controls. The pharmacological characterization of EFS contractile responses showed that a cooperative-like interaction between cholinergic muscarinic and tachykinergic neurokinin 1 and 2 receptors mediated transmission in DUMC of TNBS rats vs a simple additive interaction in controls.CONCLUSION: The results of this study show that, during TNBS-induced acute distal colitis, circular muscle intrinsic contractile mechanisms and possible enteric neural excitatory activity are inhibited in the distended uninflamed mid-colon. Suppression of NO synthesis markedly improves spontaneous and evokes muscle contractions, in spite of any evident change in local NO activity. | Luciano Onori Annalisa Aggio Simona D'Alo' Paola Muzi Maria Grazia Cifone Gabriella Mellillo Rachele Ciccocioppo Gennaro Taddei Giuseppe Frieri Giovanni Latella | 2005 | World Journal of Gastroenterology2005，11，36： | 7 |
| 3 | Severe adverse events during antiviral therapy in hepatitis C virus cirrhotic patients: A systematic review显示文摘AIM: To identify severe adverse events (SAEs) leading to treatment discontinuation that occur during antiviral therapy in hepatitis C virus (HCV)-infected cirrhotic patients. METHODS: We identified all the articles published prior to December 2011 in the PubMed, Medline, Lilacs, Scopus, Ovid, EMBASE, Cochrane and Medscape databases that presented these data in cirrhotic patients. These studies evaluated the rate of SAEs leading to discontinuation of standard care treatment: Pegylated interferon (PegIFN) alpha 2a (135-180 μg/wk) or PegIFN alpha 2b (1 or 1.5 μg/kg per week) and ribavirin (800-1200 mg/d). Patients with genotype 1 + 4 underwent treatment for 48 wk, whereas those with genotypes 2 + 3 were treated for 24 wk.RESULTS: We included 17 papers in this review, comprising of 1133 patients. Treatment was discontinued due to SAEs in 14.5% of the patients. The most common SAEs were: severe thrombocytopenia and/or neutropenia (23.2%), psychiatric disorders (15.5%), decompensation of liver cirrhosis (12.1%) and severe anemia (11.2%). The proportion of patients who needed to discontinue their therapy due to SAEs was significantly higher in patients with Child-Pugh class B and Cvs those with Child-Pugh class A: 22%vs 11.4% (P = 0.003). A similar discontinuation rate was found in cirrhotic patients treated with PegIFN alpha 2a and those treated with PegIFN alpha 2b, in combination with ribavirin: 14.2%vs 13.7% (P = 0.96). The overall sustained virological response rate in cirrhotic patients was 37% (95%CI: 33.5-43.1) but was significantly lower in patients with genotype 1 + 4 than in those with genotype 2 + 3: 20.5% (95%CI: 17.9-24.8) vs 56.5% (95%CI: 51.5-63.2), (P < 0.0001). CONCLUSION: Fourteen point five percent of HCV cirrhotic patients treated with PegIFN and ribavirin needed early discontinuation of therapy due to SAEs, the most common cause being hematological disorders. | Simona Bota Ioan Sporea Roxana Sirli Alina Popescu Adriana Maria Neghinǎ Mirela Dǎnilǎ Mihnea Strǎin | 2013 | World Journal of Hepatology2013，5，3： | 6 |
| 4 | High-Resolution Crystal Structure and Redox Properties of Chloroplastic Triosephosphate Isomerase from Chlamydomonas reinhardtii显示文摘Triosephosphate isomerase (TPI ) 催化 glyceraldehyde-3-phosphate 的互变现象到 dihydroxyacetone 磷酸盐。光合的有机体通常包含位于细胞质和叶绿体的 TPI 的二 isoforms。当细胞质的 TPI 涉及 glycolysis 时, chloroplastic isoform 参予 CalvinBenson 周期,为碳固定负责的一个关键光合的过程。与它的细胞质的对应物相比, chloroplastic TPI 的功能的特征糟糕被调查了,它的三维的结构没被解决。最近,几研究包括 dithiol/disulfide 交换, glutathionylation,和 nitrosylation 作为不同氧化还原作用修正的一个潜在的目标建议了 TPI。然而,在蛋白质活动的既不效果也不位于这些氧化还原作用修正下面的分子的机制被调查了。这里,我们 recombinantly 生产了并且从单细胞的绿水藻 Chlamydomonas reinhardtii (Cr ) 净化了 TPI。酶的生物化学的性质被描出,它的结晶的结构在 1.1 的一个决定是坚定的 ? 。CrTPI 是有包含典型(/)8 桶褶层的子单元的 homodimer。尽管为 TRX 规定的证据都没被获得, CrTPI 被发现由 nitrosoglutathione 由氧化谷胱甘肽和 trans-nitrosylation 经历 glutathionylation,证实它到多重氧化还原作用修正的敏感。 | Mirko Zaffagnini Laure Michelet Chiara Sciabolini Nastasia Di Giacinto Samuel Morisse Christophe H. Marchand Paolo Trost Simona Fermani Stephane D Lemaire | 2014 | Molecular Plant2014，7，1： | 4 |
| 5 | Anti-inflammatory and analgesic activities with gastroprotective effect of semi-purified fractions and isolation of pure compounds from Mediterranean gorgonian Eunicella singularis显示文摘Objective: To explore anti-inflammatory activities of organic extract and its semi-purified fractions(ethanol, acetone, methanol/dichloromethane) from the Mediterranean gorgonian Eunicella singularis. Methods: The anti-inflammatory and analgesic activities were evaluated, using the carrageenan-induced rat paw edema model and the acetic acid writhing test in mice. The gastroprotective activity was determined using HCl/Et OH induced gastric ulcers in rats. The purification and structure elucidation of compound(s) from the more effective fraction were determined by chromatographic and spectroscopic methods and in comparison with data reported in the literature. Results: The fraction F-Et OH showed an important antiinflammatory activity associated with significant analgesic and gastroprotective properties. The purification and structure elucidation of compound(s) from this fraction lead to the identification of one diterpenoid and four sterols. Conclusions: These results suggested that components from the active fraction can be used to treat various anti-inflammatory diseases. | Monia Deghrigue Carmen Festa Lotfi Ghribi Maria Valeria D’Auria Simona De Marino Hichem Ben Jannet Abderrahman Bouraoui | 2015 | Asian Pacific Journal of Tropical Medicine2015，8，8： | 2 |
| 6 | Orthostatic hypotension,an often-neglected problem in community-dwelling older people:discrepancies between studies and real life显示文摘Orthostatic hypotension (OH)is a common condition in older persons.According to the 2011criteria,OH is defined by a sustained reduction of systolic blood pressure of 20 mmHg or a 10mmHg-fall of diastolic blood pressure,[1] Its prevalence increases with age and according to a recent systematic review the pooled prevalence in community dwelling older people is 22.2%.[2]Although OH is largely explained by concurrent clinical conditions (in particular, hypertension,diabetes,malnutrition,vascular encephalopa- thy,anemia,Parkinson's disease)[3],aging per se determines a series of physiological dysfunctions potentially representing its biological substratum (e.g.,reduction in barore- flex-mediated cardiovascular function,altered salt and water balance at renal level,impaired cardiac diastolic filling).It is also noteworthy that age-related changes in pharmacokinetic and pharmacodynamic mechanisms of drugs (especially in the context of polypharmacy)also increase the risk of OH. | Sarah Damanti Dario Consormi Annalisa Valentini Benedetta Cerasoli Martina Biotto Federica Conti Marta Clerici Pasqualina Iannuzzi Emanuela Manzo Paolo D Rossi Simona Ciccone Matteo Cesari | 2018 | Journal of Geriatric Cardiology2018，15，10： | 2 |
| 7 | Omega-3 fatty acid supplementation reduces one-year risk of atrial fibrillation in patients hospitalized with myocardial infarction显示文摘 | Alejandro Macchia Simona Monte Fabio Pellegrini Marilena Romero Daniel Ferrante Hernán Doval Antonio D'Ettorre Aldo Pietro Maggioni Gianni Tognoni | 2008 | European Journal of Clinical Pharmacology2008，，6： | 2 |
| 8 | Value of acoustic radiation force impulse elastography for the assessment of ascites syndrome显示文摘AIM:To assess the feasibility of performing acoustic radiation force impulse(ARFI) elastography in patients with ascites and its predictive value for the cirrhotic or non-cirrhotic etiology of ascites.METHODS:Our study included 153 patients with ascites,mean age 58.8 ± 13.1 years.One hundred and fifteen(75.2%) patients had ascites in the context of cirrhosis,29(18.9%) had non-cirrhotic ascites(diagnosed by clinical,ultrasound,endoscopic and/or laparoscopic criteria) and in 9(5.9%) cases we could not establish the etiology of ascites.We performed 10 ARFI measurements and the median value was calculated and expressed in meters/second(m/s).Among the 29 patients with non-cirrhotic ascites were included:20 laparoscopically demonstrated peritoneal carcinomatosis with histological confirmation,7 acute pancreatitis with ascites which later resolved,and one case each of lymphatic ascites and ascites in the context of a liver abscess.In 11 of the 20 patients with peritoneal carcinomatosis,the liver structure was homogenous in the ultrasound examination and in 9 patients the ultrasound exam revealed liver metastases.RESULTS:We could not obtain valid ARFI measurements in 5 patients(3.2%).The mean liver stiffness measurements by means of ARFI were statistically significantly higher in patients with cirrhotic ascites than in those with non-cirrhotic ascites:3.04 ± 0.70 vs 1.45 ± 0.59 m/s(P < 0.001).For a cut-off value of 1.8 m/s for predicting cirrhosis(and ascites in the context of cirrhosis),as obtained in a previous study,ARFI had 98.1% sensitivity,86.2% specificity,96.4% positive predictive value,92.5% negative predictive value and 95.6% accuracy for predicting cirrhotic ascites.For a cut-off value of 1.9 m/s the accuracy was 94.9% and for a 2 m/s cut-off value it was 92.8%.CONCLUSION:ARFI elastography is feasible in most patients with ascites and has a very good predictive value for the cirrhotic or non-cirrhotic etiology of ascites. | Simona Bota Ioan Sporea Roxana Sirli Alina Popescu Mirela Dǎnilǎ Mǎdǎlina Sendroiu | 2011 | World Journal of Radiology2011，3，8： | 2 |
| 9 | Comparative proteomic analysis of mammalian animal tissues and body fluids:bovine proteome database显示文摘 | Amhrosio Chiara D' Arena Simona Talamo Fabio | 2005 | Journal of Chromatography B2005，815，： | 1 |
| 10 | Proteomic analysis of tomato fruits from two ecotypes during ripening 显示文摘 | Mariapina R Chiara D Simona A | 2006 | Proteomies2006，，6： | 1 |
| 11 | Brassica juncea can improve selenite and selenate abatement in selenium contaminated soil through the aid of its rhizospheric bacterial population显示文摘 | Simona D G Silvia L Fernando M | 2006 | Plant Soil2006，285，： | 1 |
| 12 | Valsartan benefits left ventricular structure and function in heart failure: Val-HeFT echocardiographic study显示文摘 | Maylene Wong Lidia Staszewsky Roberto Latini Simona Barlera Alberto Volpi Yann-Tong Chiang Raymond L Benza Sidney O Gottlieb Thomas D Kleemann Franco Rosconi Pieter M Vandervoort Jay N Cohn | 2002 | Journal of the American College of Cardiology2002，，： | 1 |
| 13 | Proton MR spectroscopy of cerebral gliomas at 3 T: spatial heterogeneity, and tumour grade and extent显示文摘 | Alfonso Costanzo Tommaso Scarabino Francesca Trojsi Teresa Popolizio Domenico Catapano Giuseppe M. Giannatempo Simona Bonavita Maurizio Portaluri Michela Tosetti Vincenzo A. d'Angelo Ugo Salvolini Gioacchino Tedeschi | 2008 | European Radiology2008，，8： | 1 |
| 14 | Kinotics of cobalt cementation on zinc powder 显示文摘 | ANNA M P SIMONA P STELLA D | 1995 | Ind Eng Chem Res1995，34，： | 1 |
| 15 | Complex dynamical behaviours in two non-linearly coupled Chua's circuits显示文摘 | Silvano C Simona D S | 2004 | Chaos Solitons and Fractals2004，21，3： | 1 |
| 16 | Characterization of genes associated with induced resistance against Penicillium expansum in apple fruit treated with quercetin显示文摘 | SIMONA M S LEONARDO S ANNALISA D G | 2010 | Postharvest Biology and Technology2010，56，1： | 1 |
| 17 | Fluorousmaterials in microbubble engineering science and techno-logy-Design and development of new bubble preparation andsizing technologies显示文摘 | Simona R Csongor S Frédéric G | 2011 | J Fluorine Chem2011，15，2： | 1 |
| 18 | Fermentative production of superoxide dismutase with Kluyveromyces marxianus显示文摘 | Clementina D Alberto A Simona Z | 2007 | J Ind Microbiol Biotechnol2007，34，1： | 1 |
| 19 | Metabotropic Glutamate Receptors in Glial Cells显示文摘 | Simona D'Antoni Antonio Berretta Carmela Maria Bonaccorso | 2008 | Neurochem Res2008，33，： | 1 |
| 20 | Consequences of high transitory airflows generated :by segmented pulse-jet cleaning of dust collector filter bags显示文摘 | Simona X Bemera D Chazelet S | 2010 | Powder Technology2010，201，： | 1 |
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