Search results for "RESISTANCE"

showing 10 items of 3641 documents

2021

Proteins play a crucial role in metabolism, in maintaining fluid and acid-base balance and antibody synthesis. Dietary proteins are important nutrients and are classified into: 1) animal proteins (meat, fish, poultry, eggs and dairy), and, 2) plant proteins (legumes, nuts and soy). Dietary modification is one of the most important lifestyle changes that has been shown to significantly decrease the risk of cardiovascular (CV) disease (CVD) by attenuating related risk factors. The CVD burden is reduced by optimum diet through replacement of unprocessed meat with low saturated fat, animal proteins and plant proteins. In view of the available evidence, it has become acceptable to emphasize the …

0301 basic medicine030109 nutrition & dieteticsNutrition and DieteticsCholesterolbusiness.industrySaturated fatfood and beverages030209 endocrinology & metabolismCritical Care and Intensive Care Medicinemedicine.diseaseLower riskObesity03 medical and health scienceschemistry.chemical_compound0302 clinical medicineInsulin resistancechemistryWeight lossmedicineRed meatFood scienceMetabolic syndromemedicine.symptombusinessClinical Nutrition
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Lepidopteran species have a variety of defence strategies against bacterial infections

2017

The insect immune system has versatile ways of coping with microbial insults. Currently, innate immune priming has been described in several invertebrates, and the first insights into its mechanistic basis have been described. Here we studied infections with two different strains of Serratia marcescens bacteria in two different Lepidopteran hosts. The results reveal fundamental differences between the two hosts, a well-known model organism Galleria mellonella and a non-model species Arctia plantaginis. They differ in their strategies for resisting oral infections; priming their defences against a recurring sepsis; and upregulating immunity related genes as a response to the specific pathoge…

0301 basic medicine6-Toximmune priming030106 microbiologyVirulenceMicrobiologyresistance03 medical and health sciencesImmune systemSpecies SpecificityImmunityisovahakoisaAnimalsimmuniteettigeeniekspressioArctia plantaginisPathogenDefensinEcology Evolution Behavior and SystematicsSerratia marcescensCecropinInnate immune systemtolerancebiologyfungibacterial infectionvirulenssibiology.organism_classificationimmunityextracellular proteaseLepidopteravirulenceGalleria mellonella030104 developmental biologyGalleria mellonellaDefensinHost-Pathogen InteractionsSerratia marcescensgene expressionta1181
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Melatonin Targets Metabolism in Head and Neck Cancer Cells by Regulating Mitochondrial Structure and Function.

2021

This study was funded by grants from the Ministerio de Economia, Industria y Competitividad y por el Fondo de Desarrollo Regional FEDER, Spain nº SAF2013-49019, SAF2017-85903-P, and from the Consejería de Innovación, Ciencia y Empresa, Junta de Andalucía (P07- CTS- 03135, P10- CTS- 5784, and CTS- 101), Spain. J.F. and L.M. have FPU fellowships from the Ministerio de Educación Cultura y Deporte, Spain. C.R.S. was a schorlarship holder from the Plan Propio de Investigación of the University of Granada.

0301 basic medicine:Phenomena and Processes::Chemical Phenomena::Biochemical Phenomena::Biochemical Processes::Phosphorylation::Oxidative Phosphorylation [Medical Subject Headings]PhysiologyClinical BiochemistrymelatoninMitochondrionBiochemistryMelatonina:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings]0302 clinical medicine:Anatomy::Cells::Cells Cultured::Cell Line [Medical Subject Headings]head and neck cancer cells:Phenomena and Processes::Physiological Phenomena::Pharmacological Phenomena::Drug Resistance::Drug Resistance Neoplasm [Medical Subject Headings]MitophagyMitocondriasChemistryapoptosisglycolysisOXPHOSmitochondria030220 oncology & carcinogenesishormones hormone substitutes and hormone antagonistsmedicine.drug:Phenomena and Processes::Chemical Phenomena::Biochemical Phenomena::Biochemical Processes::Carbohydrate Metabolism::Glycolysis [Medical Subject Headings]Neoplasias de cabeza y cuello:Diseases::Neoplasms::Neoplasms by Site::Head and Neck Neoplasms [Medical Subject Headings]:Chemicals and Drugs::Inorganic Chemicals::Free Radicals::Reactive Oxygen Species [Medical Subject Headings]Mitofagiafree radicalsOxidative phosphorylationArticleMelatonin03 medical and health sciencesmedicine:Phenomena and Processes::Cell Physiological Phenomena::Cell Physiological Processes::Cell Growth Processes::Cell Proliferation [Medical Subject Headings]Molecular BiologyRadicales libresCell growth:Chemicals and Drugs::Amino Acids Peptides and Proteins::Proteins::DNA-Binding Proteins::Receptors Cytoplasmic and Nuclear::Receptors Melatonin [Medical Subject Headings]:Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Therapeutic Uses::Antineoplastic Agents [Medical Subject Headings]lcsh:RM1-950:Anatomy::Cells::Cellular Structures::Subcellular Fractions::Mitochondria [Medical Subject Headings]Cell Biologymedicine.diseaseHead and neck squamous-cell carcinoma:Phenomena and Processes::Cell Physiological Phenomena::Cell Physiological Processes::Cell Death::Apoptosis [Medical Subject Headings]Glucólisis030104 developmental biologylcsh:Therapeutics. PharmacologymitophagyApoptosisCancer cellCancer research:Chemicals and Drugs::Hormones Hormone Substitutes and Hormone Antagonists::Hormones::Melatonin [Medical Subject Headings]
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Ceftolozane-Tazobactam Combination Therapy Compared to Ceftolozane-Tazobactam Monotherapy for the Treatment of Severe Infections: A Systematic Review…

2021

Ceftolozane-tazobactam (C/T) is a combination of an advanced-generation cephalosporin (ceftolozane) with a &beta

0301 basic medicine<i>pseudomonas aeruginosa</i>Biochemistrypseudomonas aeruginosasepsis0302 clinical medicinesystematic reviewceftolozanepolycyclic compoundsPharmacology (medical)030212 general & internal medicineGeneral Pharmacology Toxicology and Pharmaceuticsceftolozane-tazobactamAnti-infective agentInfectious DiseasesMeta-analysisCeftolozanemedicine.drugMicrobiology (medical)medicine.medical_specialtyCombination therapySepsiβ-lactamase inhibitors030106 microbiologyMicrobiologyTazobactamArticleSepsis03 medical and health sciencesmultidrug resistanceInternal medicinemedicineMeta-analysibacteremiabusiness.industryorganic chemicalslcsh:RM1-950Retrospective cohort studybiochemical phenomena metabolism and nutritionmedicine.diseasebacterial infections and mycosesinfectionmeta-analysisPneumonialcsh:Therapeutics. PharmacologyESBLESBLsBacteremiabacteriaanti-infective agentsbusiness
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Epimagnolin A, a tetrahydrofurofuranoid lignan from Magnolia fargesii, reverses ABCB1-mediated drug resistance.

2018

Abstract Background Epimagnolin A is an ingredient of the Chinese crude drug Shin-i, derived from the dried flower buds of Magnolia fargesii and Magnolia flos, which has been traditionally used for the treatment of allergic rhinitis and nasal congestion, empyema, and sinusitis. The pharmacokinetic activity of epimagnolin A remains to be evaluated. Purpose In this study, we examined the possible interactions of epimagnolin A with human ATP-binding cassette (ABC) transporter ABCB1, a membrane protein vital in regulating the pharmacokinetics of drugs and xenobiotics. Study design/methods The interaction of epimagnolin A with ABCB1 was evaluated in calcein, ATPase, and MTT assays by using Flp-I…

0301 basic medicineATP Binding Cassette Transporter Subfamily BATPasePharmaceutical ScienceATP-binding cassette transporterPharmacologyCrude drugLignans03 medical and health scienceschemistry.chemical_compound0302 clinical medicinePharmacokineticsCell Line TumorDrug DiscoverymedicineHumansEnzyme kineticsP-glycoproteinPharmacologyAdenosine TriphosphatasesbiologyAntineoplastic Agents PhytogenicDrug Resistance MultipleCalceinMolecular Docking Simulation030104 developmental biologyComplementary and alternative medicinechemistryVerapamilDrug Resistance NeoplasmMagnolia030220 oncology & carcinogenesisbiology.proteinMolecular MedicineVerapamilmedicine.drugPhytomedicine : international journal of phytotherapy and phytopharmacology
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Genomic and transcriptomic profiling of resistant CEM/ADR-5000 and sensitive CCRF-CEM leukaemia cells for unravelling the full complexity of multi-fa…

2016

AbstractWe systematically characterised multifactorial multidrug resistance (MDR) in CEM/ADR5000 cells, a doxorubicin-resistant sub-line derived from drug-sensitive, parental CCRF-CEM cells developed in vitro. RNA sequencing and network analyses (Ingenuity Pathway Analysis) were performed. Chromosomal aberrations were identified by array-comparative genomic hybridisation (aCGH) and multicolour fluorescence in situ hybridisation (mFISH). Fifteen ATP-binding cassette transporters and numerous new genes were overexpressed in CEM/ADR5000 cells. The basic karyotype in CCRF-CEM cells consisted of 47, XX, der(5)t(5;14) (q35.33;q32.3), del(9) (p14.1), +20. CEM/ADR5000 cells acquired additional aber…

0301 basic medicineATP Binding Cassette Transporter Subfamily BDNA RepairDown-RegulationChromosomal translocationABCC5ArticleTranslocation GeneticTranscriptome03 medical and health sciences0302 clinical medicineATP Binding Cassette Transporter Subfamily G Member 2HumansGeneIn Situ Hybridization FluorescenceChromosome 7 (human)GeneticsComparative Genomic HybridizationGenomeLeukemiaMultidisciplinarybiologySequence Analysis RNAGene Expression ProfilingGenomicsNeoplasm ProteinsMultiple drug resistanceGene expression profiling030104 developmental biologyDrug Resistance Neoplasm030220 oncology & carcinogenesisbiology.proteinTranscriptomeComparative genomic hybridizationScientific Reports
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Cytotoxicity of sesquiterpene alkaloids from Nuphar plants toward sensitive and drug-resistant cell lines.

2018

Multi-drug resistance (MDR) is a critical problem in cancer chemotherapy. MDR causes the overexpression of ATP-binding cassette (ABC) transporters and mutations in tumor suppressor genes and oncogenes. To tackle this issue, in this study, we focused on Nuphar plants, which have been traditionally used as food. Sesquiterpene alkaloids (1–3) were isolated from N. japonicum and dimeric sesquiterpene thioalkaloids (4–10) were isolated from N. pumilum. P-glycoprotein-overexpressing CEM/ADR5000 cells were cross-resistant to 6,6′-dihydroxythiobinupharidine (10). Using in silico molecular docking, we calculated the binding energies and simulated the interactions of these compounds with the correspo…

0301 basic medicineATP Binding Cassette Transporter Subfamily BTumor suppressor geneCell SurvivalATP-binding cassette transporterNuphar03 medical and health sciences0302 clinical medicineAlkaloidsCell Line TumorNeoplasmsATP Binding Cassette Transporter Subfamily G Member 2HumansATP Binding Cassette Transporter Subfamily B Member 1Binding siteCytotoxicityGeneOncogeneChemistryPlant ExtractsABCB5General MedicineMolecular biologyAntineoplastic Agents PhytogenicNeoplasm ProteinsGene Expression Regulation NeoplasticMolecular Docking Simulation030104 developmental biologyCell cultureDrug Resistance Neoplasm030220 oncology & carcinogenesisSesquiterpenesFood ScienceFoodfunction
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Molecular Determinants of Sensitivity or Resistance of Cancer Cells Toward Sanguinarine.

2018

For decades, natural products represented a significant source of diverse and unique bioactive lead compounds in drug discovery field. In Clinical oncology, complete tumors remission is hampered by the development of drug-resistance. Therefore, development of cytotoxic agents that may overcome drug resistance is urgently needed. Here, the natural benzophenanthridine alkaloid sanguinarine has been studied for its cytotoxic activity against multidrug resistance (MDR) cancer cells. We investigated the role of the ATP-binding cassette (ABC) transporters BCRP/ABCG2, P-glycoprotein/ABCB1 and its close relative ABCB5 in drug resistance. Further drug resistance mechanisms analyzed in this study wer…

0301 basic medicineAbcg2Drug resistance03 medical and health scienceschemistry.chemical_compound0302 clinical medicineCytotoxic T cellcancerPharmacology (medical)SanguinarineEpidermal growth factor receptorOriginal ResearchPharmacologypharmacogenomicsdrug resistancebiologyChemistrylcsh:RM1-950ABCB5phytotherapybioinformaticsMultiple drug resistancelcsh:Therapeutics. Pharmacology030104 developmental biology030220 oncology & carcinogenesisCancer cellCancer researchbiology.proteinmicroarrayFrontiers in pharmacology
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Role of AxyZ Transcriptional Regulator in Overproduction of AxyXY-OprZ Multidrug Efflux System in Achromobacter Species Mutants Selected by Tobramycin

2017

ABSTRACT AxyXY-OprZ is an RND-type efflux system that confers innate aminoglycoside resistance to Achromobacter spp. We investigated here a putative TetR family transcriptional regulator encoded by the axyZ gene located upstream of axyXY-oprZ . An in-frame axyZ gene deletion assay led to increased MICs of antibiotic substrates of the efflux system, including aminoglycosides, cefepime, fluoroquinolones, tetracyclines, and erythromycin, indicating that the product of axyZ negatively regulates expression of axyXY-oprZ . Moreover, we identified an amino acid substitution at position 29 of AxyZ (V29G) in a clinical Achromobacter strain that occurred during the course of chronic respiratory tract…

0301 basic medicineAchromobacterCefepime030106 microbiologyPopulationAchromobacterMicrobial Sensitivity TestsBiologymedicine.disease_causeMicrobiology03 medical and health scienceschemistry.chemical_compoundAntibiotic resistanceBacterial ProteinsMechanisms of ResistanceDrug Resistance Multiple BacterialTobramycinmedicineHumansPharmacology (medical)TetRAmino Acid Sequence[SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biochemistry [q-bio.BM]educationComputingMilieux_MISCELLANEOUSPharmacologyeducation.field_of_studyPseudomonas aeruginosaMembrane Transport Proteins[SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry Molecular Biology/Molecular biologyGene Expression Regulation Bacterialbiology.organism_classification[SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/BacteriologyAnti-Bacterial Agents3. Good healthInfectious DiseasesAmino Acid SubstitutionchemistryPseudomonas aeruginosaTobramycinTrans-ActivatorsEffluxGene DeletionBacterial Outer Membrane Proteinsmedicine.drugAntimicrobial Agents and Chemotherapy
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Antibiotic treatment of infections caused by carbapenem-resistant Gram-negative bacilli: an international ESCMID cross-sectional survey among infecti…

2018

ESGAP, ESGBIS, ESGIE and the CRGNB treatment survey study group.

0301 basic medicineAcinetobacter baumanniiCarbapenemAntibioticsDrug ResistanceDrug resistanceTigecyclineAcinetobacter baumannii; Carbapenem; Carbapenem-resistant Gram-negative bacilli; Combination therapy; Enterobacteriaceae; Polymyxin; Pseudomonas aeruginosa; SurveyPolymyxin0302 clinical medicineSurveys and Questionnairespolycyclic compounds030212 general & internal medicineAcinetobacter baumannii; Carbapenem; Carbapenem-resistant Gram-negative bacilli; Combination therapy; Enterobacteriaceae; Polymyxin; Pseudomonas aeruginosa; Survey; Anti-Bacterial Agents; Carbapenems; Cross Infection; Cross-Sectional Studies; Drug Resistance Bacterial; Gram-Negative Bacteria; Gram-Negative Bacterial Infections; Hospitals; Humans; Microbial Sensitivity Tests; Surveys and QuestionnairesSurveyCarbapenemAcinetobacter baumannii; Carbapenem; Carbapenem-resistant Gram-negative bacilli; Combination therapy; Enterobacteriaceae; Polymyxin; Pseudomonas aeruginosa; Survey; Anti-Bacterial Agents; Carbapenems; Cross Infection; Cross-Sectional Studies; Drug Resistance Bacterial; Gram-Negative Bacteria; Gram-Negative Bacterial Infections; Hospitals; Humans; Microbial Sensitivity Tests; Surveys and Questionnaires; Microbiology (medical); Infectious DiseasesCross InfectionbiologyMicrobial Sensitivity TestCarbapenem-resistant Gram-negative bacilliBacterialantibiotic management carbapenem-resistant Gram-negative bacteriaGeneral MedicineHospitals3. Good healthAcinetobacter baumanniiAnti-Bacterial AgentsInfectious DiseasesPseudomonas aeruginosamedicine.drugHumanMicrobiology (medical)medicine.medical_specialtymedicine.drug_class030106 microbiologyMicrobial Sensitivity TestsFosfomycincarbapenem-resistant Gram-negative bacteria03 medical and health sciencesHospitalEnterobacteriaceaeInternal medicineAnti-Bacterial AgentDrug Resistance BacterialGram-Negative BacteriamedicineGram-Negative Bacterial InfectionHumansCombination therapyCross-Sectional Studiebusiness.industrybiochemical phenomena metabolism and nutritionbiology.organism_classificationbacterial infections and mycosesCross-Sectional StudiesCarbapenemsInfectious disease (medical specialty)Carbapenem-resistant gram-negative bacilli[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologieantibiotic managementbusinessGram-Negative Bacterial InfectionsRifampicin
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