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Levofloxacin/amoxicillin-based schemes vs quadruple therapy for Helicobacter pylori eradication in second-line

World Journal of Gastroenterology 2012年第40期18卷 5669-5678页

作者： simona di caro Lucia Fini Yayha Daoud Fabio Grizzi Antonio Gasbarrini Antonino De Lorenzo Laura di Renzo Sara McCartney Stuart Bloom Department of Gastroenterology University College HospitalLondon NW1 2PGUnited Kingdom division of Human Nutrition University of Tor Vergata Department of Gastroenterology and Laboratory of Molecular Gastroenterology Humanitas Clinical and Research Center Baylor Health Care System Institute for Health Care Research and Improvement Department of Internal Medicine Gemelli HospitalCatholic University of Rome

Worldwide prevalence of Helicobacter pylori(***) infection is approximately 50%,with the highest being in developing *** compared cure rates and tolerability(SE) of second-line *** 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 *** total,10 articles and four abstracts were *** 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 dication 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 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 *** findings support the use of 10-d LA as a simple second-line treatment for *** eradication with an excellent eradication rate and *** optimal second-line alternative scheme might differ among countries depending on quinolone resistance.

关键词： Helicobacter pylori Second-line treatment Levofloxacin Quadruple regimen

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Therapeutic implications of colon cancer stem cells

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World Journal of Gastroenterology 2010年第31期16卷 3871-3877页

作者： Eros Fabrizi simona di Martino Federica Pelacchi Lucia Ricci-Vitiani Department of Hematology Oncology and Mo-lecular MedicineIstituto Superiore di SanitàViale Regina Elena 299Rome 00161Italy

Colorectal cancer is the second most common cause of cancer-related death in many industrialized countries and is characterized by a heterogenic pool of cells with distinct differentiation patterns. Recently, the concept that cancer might arise from a rare population of cells with stem cell-like properties has received support with regard to several solid tumors, including colorectal cancer. According to the cancer stem cell hypothesis, cancer can be considered a disease in which mutations either convert normal stem cells into aberrant counterparts or cause a more differentiated cell to revert toward a stem cell-like behaviour; either way these cells are thought to be responsible for tumor generation and propagation. The statement that only a subset of cells drives tumor formation has major implications for the development of new targeted therapeutic strategies aimed at eradicating the tumor stem cell population. This review will focus on the biology of normal and malignant colonic stem cells, which might contribute to our understanding of the mechanisms responsible for tumor development and resistance to therapy.

关键词： Colon cancer initiating cells Colon carcinogenesis Target therapy

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Coupling of bioelectrochemical toluene oxidation and trichloroethene reductive dechlorination for single-stage treatment of groundwater containing multiple contaminants

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Environmental Science and Ecotechnology 2022年第3期11卷 32-39页

作者： carolina Cruz Viggi Matteo Tucci Marco Resitano simona Crognale Maria Letizia di Franca simona Rossetti Federico Aulenta Water Research Institute(IRSA) National Research Council(CNR)Via Salaria Km 2930000015MonterotondoRMItaly

Bioremediation of groundwater contaminated by a mixture of aromatic hydrocarbons and chlorinated solvents is typically challenged because these contaminants are degraded via distinctive oxidative and reductive pathways,thus requiring different amendments and redox ***,we provided the proof-of-concept of a single-stage treatment of synthetic groundwater containing toluene and trichloroethene(TCE)in a tubular bioelectrochemical reactor,known as a“bioelectric well”.Toluene was degraded by a microbial bioanode(up to 150 mmol L^(-1) d^(-1))with a polarized graphite anode(t0.2 V ***)serving as the terminal electron *** electric current deriving from microbially-driven toluene oxidation resulted in(abiotic)hydrogen production(at a stainless-steel cathode),which sustained the reductive dechlorination of TCE to less-chlorinated intermediates(i.e.,cis-DCE,VC,and ETH),at a maximum rate of 500 meq L^(-1) d^(-1),in the bulk of the reactor.A phylogenetic and functional genebased analysis of the“bioelectric well”confirmed the establishment of a microbiome harboring the metabolic potential for anaerobic toluene oxidation and TCE reductive ***,Toluene degradation and current generation were found to be rate-limited by external mass transport phenomena,thus indicating the existing potential for further process optimization.

关键词： Bioelectric well Dehalococcoides mccartyi Electrobioremediation Groundwater remediation Toluene Trichloroethene

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Scaffold proteins of cancer signaling networks: The paradigm of FK506 binding protein 51 (FKBP51) supporting tumor intrinsic properties and immune escape

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Oncology Research 2023年第4期31卷 423-436页

作者： LAURA MARRONE MASSIMO D’AGOSTINO caroLINA GIORDANO VALERIA di GIACOMO simona URZINI CHIARA MALASOMMA MARIA PAOLA GAMMELLA MARTINA TUFANO simona ROMANO MARIA FIAMMETTA ROMANO Department of Molecular Medicine and Medical Biotechnology University of Naples Federico IINaples80131Italy dipartimento di diagnostica per Immagini e Neuroradiologia Fondazione Policlinico Universitario“A.Gemelli”IRCCSUniversitàCattolica S.CuoreRomeItaly

Scaffold proteins are crucial regulators of signaling networks,and their abnormal expression may favor the development of *** the scaffold proteins,immunophilin covers a unique role as‘protein-philin’(Greek‘philin’=friend)that interacts with proteins to guide their proper *** growing list of human syndromes associated with the immunophilin defect underscores the biological relevance of these proteins that are largely opportunistically exploited by cancer cells to support and enable the tumor’s intrinsic *** the members of the immunophilin family,the FKBP5 gene was the only one identified to have a splicing *** cells impose unique demands on the splicing machinery,thus acquiring a particular susceptibility to splicing *** review article aims to overview the current knowledge of the FKBP5 gene functions in human cancer,illustrating how cancer cells exploit the scaffolding function of canonical FKBP51 to foster signaling networks that support their intrinsic tumor properties and the spliced FKBP51s to gain the capacity to evade the immune system.

关键词： Immunophilin Alternative splicing Signal transduction

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Efficient hexane isomers separation in isoreticular bipyrazolate metal-organic frameworks:The role of pore functionalization

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Nano Research 2021年第2期14卷 532-540页

作者： Rebecca Vismara Corrado di Nicola Rodrigo Gil-San Millan Kostiantyn V.Domasevich Claudio Pettinari Jorge A.R.Navarro simona Galli dipartimento di Scienza e Alta Tecnologiay University delVInsubria 22100 ComoItaly School of Science and Technology University ofCamerino62032 Camerino(MC)Italy Departamento de Quimica Inorganica Universidad de Granada18071 GranadaSpain Taras Shevchenko National University of Kyiv 01601 KyivUkraine School of Pharmacy University of Camerino62032 Camerino(MC)Italy Istituto di Chimica dei Composti Organometallici(ICCOM-CNR) 50019 Sesto FiorentinoItaly Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali 50121 FirenzeItaly Department of Chemistry University of LiverpoolLiverpool L73NYUK

Hydrocarbons separation in petrochemical industries is a key,energy-consuming stage in the manufacture of high-quality added-value products—hence the need for more efficient materials and environmentally friendly methodologies to improve this *** this context,we have studied the effect of metal-organic frameworks(MOFs)pore functionalization in hexane isomers separation,isolating the robust isoreticular zinc(ll)bipyrazolates Zn(BPZ),showing no pore decoration,Zn(Me_(2)BPZ),the pores of which are decorated with apolar methyl groups,and Zn(BPZ(NH_(2))_(2)),the spacers of which possess polar Lewis-basic functions(H_(2)BPZ=1H,1'H-4,4'-bipyrazole;H_(2)Me_(2)BPZ=3,3'-dimethyl-1H,1'H-4,4'-bipyrazole;H_(2)BPZ(NH_(2))_(2)=3,5-diamino-1H,1'H-4,4'-bipyrazole;DMF=dimethylformamide).After characterizing Zn(BPZ(NH_(2))_(2))as per its crystal structure and thermal behaviour,and all the three MOFs as per their textural properties,we investigated,from the experimental and computational points of view,the impact of the square one-dimensional channels decoration on the separation of the hexane isomers,demonstrating the relevance of pore constrictions in the resolution of the title alkanes mixture.

关键词： adsorption molecular sieving nitrogen-donor ligands gas separation pow der diffraction variable-tem perature pulse gas chromatography

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Magnetic resonance imaging markers for early diagnosis of Parkinson's disease

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Neural Regeneration Research 2012年第8期7卷 611-619页

作者： Silvia Marino Rosella Ciurleo Giuseppe di Lorenzo Marina Barresi simona De Salvo Sabrina Giacoppo Alessia Bramanti Pietro Lanzafame Placido Bramanti Neurobioimaging Laboratory IRCCS Centro Neurolesi "Bonino Pulejo" Messina 98124 Italy

Parkinson＇s disease （PD） is a neurodegenerative disorder characterized by selective and progressive degeneration, as well as loss of dopaminergic neurons in the substantia nigra. In PD, approximately 60-70% of nigrostriatal neurons are degenerated and 80% of content of the striatal dopamine is reduced before the diagnosis can be established according to widely accepted clinical diagnostic criteria. This condition describes a stage of disease called ＂prodromal＂, where non-motor symptoms, such as olfactory dysfunction, constipation, rapid eye movement behaviour disorder, depression, precede motor sign of PD. Detection of prodromal phase of PD is becoming an important goal for determining the prognosis and choosing a suitable treatment strategy. In this review, we present some non-invasive instrumental approaches that could be useful to identify patients in the prodromal phase of PD or in an early clinical phase, when the first motor symptoms begin to be apparent. Conventional magnetic resonance imaging （MRI） and advanced MRI techniques, such as magnetic resonance spectroscopy imaging, diffusion-weighted and diffusion tensor imaging and functional MRI, are useful to differentiate early PD with initial motor symptoms from atypical parkinsonian disorders, thus, making easier early diagnosis. Functional MRI and diffusion tensor imaging techniques can show abnormalities in the olfactory system in prodromal PD.

关键词： Parkinson’s disease early diagnosis conventional magnetic resonance imaging magnetic resonance spectroscopy diffusion-weighted imaging diffusion tensor imaging functional magnetic resonance imaging olfactory dysfunction

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Fertility preservation in female cancer patients:a single center experience

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Chinese Journal of Cancer 2015年第1期34卷 56-60页

作者： Cristina Sigismondi Enrico Papaleo Paola Viganò simona Vailati Massimo Candiani Jessica Ottolina Valentina E. di Mattei Giorgia Mangili Gynecology Department Preservation of Fertility Unit IRCCS San Raffaele Hospital

Advances in cancer treatment allow women to be cured and live longer. However, the necessary chemotherapy and radiotherapy regimens have a negative impact on future fertility. Oncofertility has emerged as a new interdisciplinary field to address the issue of gonadotoxicity associated with cancer treatment and to facilitate fertility preservation, including oocyte and ovarian tissue cryopreservation. These fertility issues are often inadequately addressed, and referral rates to oncofertility centers are low. The aim of this study was to report the 3-year experience of the San Raffaele Oncofertility Unit. A total of 96 patients were referred to the Oncofertility Unit for evaluation after the diagnosis of cancer and before gonadotoxic treatment between April 2011 and June 2014. Of the 96 patients, 30(31.2%) were affected by breast cancers, 20(20.8%) by sarcomas, 28(29.2%) by hematologic malignancies, 13(13.5%) by central nervous system cancers, 3(3.1%) by bowel tumors, 1(1.0%) by Wilms' tumor, and 1(1.0%) by a thyroid tumor; 47(49.0%) were referred for oocyte cryopreservation before starting chemotherapy, 20(20.8%) were referred for ovarian tissue cryopreservation, and 29(30.2%) were not recruited. The mean time between the patients' counseling and oocyte retrieval was 15 days(range, 2–37 days). The mean time between the laparoscopic surgery and the beginning of treatment was 4 days(range, 2–10 days). The number of patients who were referred increased over time, whereas the rate of patients who were not recruited decreased, showing an improvement in referrals to the Oncofertility Unit and in the patients' counseling and understanding. Our results indicate that an effective multidisciplinary oncofertility team is necessary for prompt referrals and treatment.

关键词：癌症患者生育功能癌症治疗女性冷冻保存中枢神经系统平均时间卵巢组织

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Alterations of seminal and hormonal parameters:An extrahepatic manifestation of HCV infection?

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World Journal of Gastroenterology 2006年第19期12卷 3073-3076页

作者： Marilena Durazzo Alberto Premoli Cataldo di Bisceglie Angela Bertagna Emanuela Fagà Giampaolo Biroli Chiara Manieri simona Bo Gianfranco Pagano Department of Internal Medicine University of Turin Italy division of Endocrinology and Metabolic diseases A.O.S.Giovanni Battista TurinItaly

AIM： To evaluate the possible influences of HCV infection and relative antiviral treatment on seminal parameters and reproductive hormonal serum levels. METHODS： Ten male patients with HCV-related chronic hepatitis and 16 healthy male volunteers were studied. In all subjects seminal parameters （nemaspermic concentration, progressive motility, morphology） and hormonal levels were determined. Seminal parameters and inhibin B, follicle-stimulating hormone, luteinizing hormone, total and free testosterone, estradiol, prolactine in patients were measured after six and twelve months of antiviral combined （interferon ± ribavirin） treatment. RESULTS： Patients before treatment showed a significantly lower nemaspermic motility and morphology as well as lower inhibin B and free testosterone levels than controls. Inhibin B levels in cases were improved six and 12 mo after treatment in five responders （161.9 ± 52.8 pg/mL versus 101.7 ± 47.0 pg/mL and 143.4 ± 46.1 pg/ mL versus 95.4 ± 55.6 pg/mL, respectively）. Hormonal pattern of patients did not significantly change after treatment, with the exception of estradiol levels with an initial reduction and an overall subsequent increment （19.7 ± 6.4 pg/mL versus 13.6 ± 5.0 pg/mL versus 17.3 ± 5.7 pg/mL）. However in 1-year responders a significant increment of free testosterone （14.2 ± 2.54 pg/mL versus 17.1 ± 2.58 pg/mL） occurred. An impairment of nemaspermic morphology occurred, while other seminal parameters did not change significantly during antiviral treatment. CONCLUSION： Patients with HCV infection show worse spermatic parameters than controls, suggesting a possible negative influence of virus on spermatogenesis, with further mild impairment during antiviral treatment. However therapy could improve the spermatic function, as suggested by the increased inhibin B levels and improved hormonal pattern in responders. Further studies are needed to confirm these preliminary intriguing results.

关键词： HCV hepatitis Seminal parameters Antiviral treatment Extrahepatic manifestations

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High-Resolution Crystal Structure and Redox Properties of Chloroplastic Triosephosphate Isomerase from Chlamydomonas reinhardtii

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Molecular Plant 2014年第1期7卷 101-120页

作者： Mirko Zaffagnini Laure Michelet Chiara Sciabolini Nastasia di Giacinto Samuel Morisse Christophe H. Marchand Paolo Trost simona Fermani Stephane D Lemaire Laboratoire de Biologie Moleculaire et Cellulaire des Eucaryotes FRE3354 Centre National de la Recherche Scientifique Universite Pierre et Marie Curie Institut de Biologie Physico-Chimique 13 rue Pierre et Marie Curie 75005 Paris France Laboratory of Plant Redox Biology Department of Pharmacy and Biotechnology (FaBiT) University of Bologna via Irnerio 42 40126 Bologna Italy Department of Chemistry 'G. Ciamician' University of Bologna via Selmi 2 40126 Bologna Italy

Triosephosphate isomerase （TPI） catalyzes the interconversion of glyceraldehyde-3-phosphate to dihydroxyacetone phosphate. Photosynthetic organisms generally contain two isoforms of TPI located in both cytoplasm and chloroplasts. While the cytoplasmic TPI is involved in the glycolysis, the chloroplastic isoform participates in the Calvin-Benson cycle, a key photosynthetic process responsible for carbon fixation. Compared with its cytoplasmic counterpart, the functional features of chloroplastic TPI have been poorly investigated and its three-dimensional structure has not been solved. Recently, several studies proposed TPI as a potential target of different redox modifications including dithiol/disulfide interchanges, glutathionylation, and nitrosylation. However, neither the effects on protein activity nor the molecular mechanisms underlying these redox modifications have been investigated. Here, we have produced recombinantly and purified TPI from the unicellular green alga Chlamydomonas reinhardtii （Cr）. The biochemical properties of the enzyme were delineated and its crystallographic structure was determined at a resolution of 1.1 A. CrTPI is a homodimer with subunits containing the typical （β/α）8-barrel fold. Although no evidence for TRX regulation was obtained, CrTPI was found to undergo glutathionylation by oxidized glutathione and trans-nitrosylation by nitrosoglutathione, confirming its sensitivity to multiple redox modifications.

关键词： triosephosphate isomerase three-dimensional structure TIM-barrel thiol-based redox regulation transnitrosylation.

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Objective electrophysiological contrast sensitivity with monofocal and multifocal intraocular lenses:a prospective clinical study

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Annals of Eye Science 2018年第1期3卷 136-146页

作者： Salvatore Cillino Giovanni Cillino simona di Naro Aissa Iggui Viviana Firpo Girolamo Maniscalco Alessandra Casuccio Department of Experimental Biomedicine and Clinical Neuroscience Ophthalmology SectionUniversity of PalermoPalermoItaly Department of Sciences for Health Promotion and Mother-Child Care“G.D’Alessandro” University of PalermoPalermoItaly

Background:To compare objective electrophysiological contrast sensitivity function(CSF)in patients implanted with either multifocal intraocular lenses(MIOLs)or monofocal intraocular lenses(IOLs)by pattern reversal visual evoked potentials(prVEP)***:Fourty-five cataract patients were randomly allocated to receive bilaterally:apodized diffractive-refractive Alcon Acrysof MIOL(A),full diffractive AMO Tecnis MIOL(B)or monofocal Alcon Acrysof IOL(C).Primary outcomes:1-year differences in objective binocular CSF measured by prVEP with sinusoid grating stimuli of 6 decreasing contrast levels at 6 spatial *** outcomes:psychophysical CSF measured with VCTS-6500,photopic uncorrected distance(UDVA),and mesopic and photopic uncorrected near and intermediate visual acuities(UNVA and UIVA respectively).Results:Electrophysiological CSF curve had an inverted U-shaped morphology in all groups,with a biphasic pattern in Group *** A showed a lower CSF than group B at 4 and 8 cpd,and a lower value than group C at 8 *** CSF in group A exhibited a lower value at 12 cpd than group *** photopic and mesopic UNVA and UIVA were worse in monofocal group compared to the multifocal *** UNVA and UIVA were better in group ***:Electrophysiological CSF behaves differently depending on the types of multifocal or monofocal *** may be related to the visual acuity under certain conditions or to IOL *** objective method might be a potential new tool to investigate on MIOL differences and on subjective device-related quality of vision.

关键词： Electrophysiological contrast sensitivity visual evoked potentials(VEPs) multifocal intraocular lens(MIOLs) prospective clinical study

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