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The Triple Combination of Meropenem,Avibactam,and a Metallo-b-Lactamase Inhibitor Optimizes Antibacterial Coverage Against Different b-Lactamase Producers

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Engineering 2024年第7期38卷 124-132页

作者： Zhuoren Ling Alistair James Macdonald Farley Aditya Lankapalli Yanfang Zhang Shonnette Premchand-Branker Kate Cook Andrei Baran Charlotte Gray-Hammerton claudia orbegozo rubio Edgars Suna Jordan Mathias Jürgen Brem Kirsty Sands Maria Nieto-Rosado Maria Mykolaivna Trush Nadira Naznin Rakhi Willames Martins Yuqing Zhou Christopher Joseph Schofield Timothy Walsh Department of Biology&Ineos Oxford Institute for Antimicrobial Research University of OxfordOxford OX13REUK Chemistry Research Laboratory Department of Chemistry and the Ineos Oxford Institute for Antimicrobial ResearchUniversity of OxfordOxford OX13TAUK Latvian Institute of Organic Synthesis Riga LV-1006Latvia Department of Medical Microbiology Division of Infection and ImmunitySchool of MedicineCardiff UniversityCardiff CF144XNUK Enzymology and Applied Biocatalysis Research Center Faculty of Chemistry and Chemical EngineeringBabes-Bolyai UniversityCluj-Napoca 400028Romania

This work explores the potential of a triple combination of meropenem(MEM),a novel metallo-blactamase(MBL)inhibitor(indole-2-carboxylate 58(InC58)),and a serine-b-lactamase(SBL)inhibitor(avibactam(AVI))for broad-spectrum activity against carbapenemase-producing bacteria.A diverse panel comprising MBL-and SBL-producing strains was used for susceptibility testing of the triple combination using the agar dilution *** frequency of resistance(FoR)to MEM combined with InC58 was *** were sequenced and tested for cross resistance,fitness,and the stability of the resistance *** with the double combinations of MEM plus an SBL or MBL inhibitor,the triple combination extended the spectrum of activity to most of the isolates bearing SBLs(oxacillinase-48(OXA-48)and Klebsiella pneumoniae carbapenemase-2(KPC-2))and MBLs(New Delhi metallo-blactamases(NDMs)),although it was not effective against Verona integron-encoded metallo-blactamase(VIM)-carrying Pseudomonas aeruginosa(***)and OXA-23-carrying Acinetobacter baumannii(***).The FoR to MEM plus InC58 ranged from 2.22×10^(-7)to 1.13×10^(-6).The resistance correlated with mutations to ompC and comR,affecting porin C and copper permeability,*** mutants manifested a fitness cost,a decreased level of resistance during passage without antibiotic pressure,and cross resistance to another carbapenem(imipenem)and a b-lactamase inhibitor(taniborbactam).In conclusion,compared with the dual combinations,the triple combination of MEM with InC58 and AVI showed a much wider spectrum of activity against different carbapenemaseproducing bacteria,revealing a new strategy to combat b-lactamase-mediated antimicrobial resistance.

关键词： Carbapenemase Metallo/serine-b-lactamase inhibitor Avibactam Meropenem Antimicrobial resistance

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Dissection of miRNA Pathways Using Arabidopsis Mesophyll Protoplasts

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Molecular Plant 2015年第2期8卷 261-275页

作者： claudia Martinho Ana Confraria Carlos Alexandre Elias Pierre Crozet Ignacio rubio-Somoza Detlef Weigel Elena Baena-Gonzalez Plant Stress Signaling Instituto Gulbenkian de Ciencia Rua da Quinta Grande - 6 2780-156 Oeiras Portugal Department of Molecular Biology Max Planck Institute for Developmental Biology D-72076 Tubingen Germany These authors contributed equally to this article. Present address: Sainsbury Laboratory Cambridge University Bateman Street Cambridge CB2 1LR UK

MicroRNAs （miRNAs） control gene expression mostly post-transcriptionally by guiding transcript cleavage and/or translational repression of complementary mRNA targets, thereby regulating developmental processes and stress responses. Despite the remarkable expansion of the field, the mechanisms underlying miRNA activity are not fully understood. In this article, we describe a transient expression system in Arabidopsis mesophyll protoplasts, which is highly amenable for the dissection of miRNA pathways. We show that by transiently overexpressing primary miRNAs and target mimics, we can manipulate miRNA levels and consequently impact on their targets. Furthermore, we developed a set of luciferase-based sensors for quantifying miRNA activity that respond specifically to both endogenous and overexpressed miRNAs and target mimics. We demonstrate that these miRNA sensors can be used to test the impact of putative components of the miRNA pathway on miRNA activity, as well as the impact of specific mutations, by either overexpression or the use of protoplasts from the corresponding mutants. We further show that our miRNA sensors can be used for investigating the effect of chemicals on miRNA activity. Our cell-based transient expression system is fast and easy to set up, and generates quantitative results, being a powerful tool for assaying miRNA activity in vivo.

关键词： miRNA miRNA activity miRNA sensor protoplasts Arabidopsis thaliana

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The differential genetic signatures related to climatic landscapes for jaguars and pumas on a continental scale

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Integrative Zoology 2021年第1期16卷 2-18页

作者： Marina ZANIN Noa GONZALEZ-BORRAJO Cuauhtémoc CHÁVEZ Yamel rubio Bart HARMSEN claudia KELLER Pablo VILLALVA Ana Carolina SRBEK-ARAUJO Leonora Pires COSTA Francisco PALOMARES Biology Department Federal University of MaranhãoSão LuísBrazil Departamento de Biologia de la Conservación Estación Biológica de DoñanaSevillaSpain Departamento de Ciencias Ambientales Universidad Autónoma MetropolitanaMexico CityMexico Escuela de Biologia Universidad Autónoma de SinaloaCuliacánMexico Panthera New YorkUSA Biodiversity Coordination Amazon Research InstituteManausBrazil Biology Department Vila Velha UniversityVila VelhaBrazil Biological Sciences Department Federal University of Espírito SantoVitóriaBrazil

Modern and paleoclimate changes may have altered species dynamics by shifting species’niche suitability over space and *** analyze whether the current genetic structure and isolation of the two large American felids,jaguar(Panthera onca)and puma(Puma concolor),are mediated by changes in climatic suitability and connection routes over modern and paleoclimatic *** estimate species distribution under 5 climatic landscapes(modern,Holocene,last maximum glaciations[LMG],average suitability,and climatic instability)and correlate them with individuals’genetic isolation through causal modeling on a resemblance *** species exhibit genetic isolation patterns correlated with LMG climatic suitability,suggesting that these areas may have worked as“allele refuges.”However,the jaguar showed higher vulnerability to climate changes,responding to modern climatic suitability and connection routes,whereas the puma showed a continuous and gradual transition of genetic *** differential responsiveness to climate change,both species are subjected to the climatic effects on genetic configuration,which may make them susceptible to future climatic changes,since these are progressing faster and with higher intensity than changes in the ***,the effects of climatic changes should be considered in the design of conservation strategies to ensure evolutionary and demographic processes mediated by gene flow for both species.

关键词： causal modeling climatic landscape ecological niche modeling gene flow linear mixed model

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Health 2020年第10期12卷 1360-1370页

作者： Lucas Lima de Carvalho Lucas Rodrigues Claro Amanda dos Santos Cabral Marcela Pereira da Silva Mello Bruna Liane Passos Lucas Marcelly Valadares Souza Simone Fonseca Lucas Alexandre Oliveira Tellles Ravini Fernandez dos Santos Vieira dos Santos Marcia Augusta Pereira dos Santos claudia Lima Campos Alzuguir Maria Cristina Dias da Silva Antonio Eduardo Vieira dos Santos Maria Antonieta rubio Tyrrell Eduardo Alexander Júlio César Fonseca Lucas Anna Nery School of Nursing Federal University of Rio de Janeiro Rio de Janeiro Brazil Celso Lisboa University Center Rio de Janeiro Brazil State Secretariat of Education of Rio de Janeiro Rio de Janeiro Brazil Department of Medicine in Primary Health Care Faculty of Medicine Federal University of Rio de Janeiro Rio de Janeiro Brazil Department of Maternal and Child Nursing Faculty of Nursing State University of Rio de Janeiro Rio de Janeiro Brazil Department of Maternal-Child Nursing Faculty of Nursing Fernandez Figueira Institute of the Oswaldo Cruz Foundation State University of Rio de Janeiro Rio de Janeiro Brazil

This documentary research aimed to describe the results of an epidemiological survey that sought to determine the prevalence of Infections Related to Health Care (IRHC) in newborns admitted to a Neonatal Intensive Care Unit (NICU) at the city of Rio de Janeiro. For methodology, the existing data in the original research database were used as the primary source. The method used was the case study in a quantitative approach. The data have been statistically arranged by odds ratio, which measured the possibility of IRHC development at the 102 newborns, by exposition at the risk factors. Results: IRHC prevalence with pneumonias, sepsis, navel’s infection and ocular infections predominance rises. Prematures are 4.10 more susceptible. Twelve hours after amniotic rupture there are 1.77 more chances of infections. Babies with more than 10 days of hospitalization are 4.70 more susceptible than those with 10 days. The registers examined were incipient at the IRHC’s characterization, beginning and duration, which make the IRHC’s diagnostic/notification difficult.

关键词： Neonatal Nursing Cross Infection Data Interpretation Statistical

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Pathogenesis of glomerular haematuria

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World Journal of Nephrology 2015年第2期4卷 185-195页

作者： claudia Yuste Eduardo Gutierrez Angel Manuel Sevillano Alfonso rubio-Navarro Juan Manuel Amaro-Villalobos Alberto Ortiz Jesus Egido Manuel Praga Juan Antonio Moreno Department of Nephrology Gregorio Mara?on Hospital Department of Nephrology Renal Vascular and Diabetes Research LabⅡS-Fundación Jiménez Díaz Autonoma University (UAM) Renal Vascular and Diabetes Research LabⅡS-Fundación Jiménez DíazAutonoma University (UAM)

Haematuria was known as a benign hallmark of some glomerular diseases, but over the last decade, new evidences pointed its negative implications on kidney disease progression. Cytotoxic effects of oxidative stress induced by hemoglobin, heme, or iron released from red blood cells may account for the tubular injury observed in human biopsy specimens. However, the precise mechanisms responsible for haematuria remain unclear. The presence of red blood cells(RBCs) with irregular contours and shape in the urine indicates RBCs egression from the glomerular capillary into the urinary space. Therefore glomerular haematuria may be a marker of glomerular filtration barrier dysfunction or damage. In this review we describe some key issues regarding epidemiology and pathogenesis of haematuric diseases as well as their renal morphological findings.

关键词：肾小球血红素治疗方法临床分析

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Encapsulation of Glycosides from Extract Plantago Major in ZnO Matrices by Sol-Gel

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材料科学与工程（中英文A版） 2015年第3期5卷 159-163页

作者： Javier Aguila Rosas Albino Moreno Rodriguez Alfonso D. Diaz Fonseca Alan E. Aguilar Aguilar Carmen M. Atzin Macedo Veronica Santander Vazquez claudia Santander Vazquez Efrain rubio Rosas Lilian A. Moreno Rodriguez Chemistry Department Faculty of Chemistry Science Benemerita Universidad Autonoma de Puebla C.U. Colonia San Manuel.Puebla 72570 Mexico Faculty of Chemical Engineering Benemerita Universidad Autonoma de Puebla C.U. Colonia San Manuel. Puebla 72570.Mexico Academic entailment Center and technology transfer Benemerita Universidad Autonoma de Puebla C.U. Colonia San Manuel.Puebla 72570 Mexico Physics Institute Benemerita Universidad Autonoma de Puebla C.U. Colonia San Manuel. Puebla 72570 Mexico

Today burns are one of the 20 leading causes of disease, with high incidence. Males are the most affected with 52% and the age group most often is 1-4 years [1]. Therefore is necessary to provide a good choice of dressing (healing material that is painless during application) used like an aid in burns treatment, a dressing has to be cost effective, easy to use and accessible, with minimal side effects, antimicrobial and non- toxic. This investigation is focused to synthesize structures matrices of plants with activity pharmacological like chromogenic glycosides such catapol and aucubin who are presents in plantain leaves [2]. These glycosides have shown to have anti-inflammatory effects, bacteriostatic and healing in wounds and burns treatment. An important part is the characterization of the matrices by spectrophotometric analysis using UV-Visible, FTIR, XRD, SEM and EDS, showing that ZnO has a hexagonal crystal form type, the particle size is approximately of 200 nm average.

关键词：大车前氧化锌矩阵苷类溶胶提取封装凝胶

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