Search results for "Preneoplastic lesion"

showing 3 items of 3 documents

Early miR-223 Upregulation in Gastroesophageal Carcinogenesis

2017

Objectives: To test miR-223 upregulation during gastric (intestinal-type) and Barrett esophageal carcinogenesis. Methods: miR-223 expression was assessed by quantitative reverse transcription polymerase chain reaction in a series of 280 gastroesophageal biopsy samples representative of the whole spectrum of phenotypic changes involved in both carcinogenetic cascades. The results were further validated by in situ hybridization on multiple tissue specimens obtained from six surgically treated gastroesophageal adenocarcinomas. miR-223 expression was also assessed in plasma samples from 30 patients with early stage (ie, stages I and II) gastroesophageal adenocarcinoma and relative controls. Res…

0301 basic medicineMalePathologyEsophageal NeoplasmsAtrophic gastritisCarcinogenesisPreneoplastic lesionsBarrett carcinogenesisGastroenterology0302 clinical medicineEarly Detection of CancerIn Situ HybridizationBarrett carcinogenesis; Gastric adenocarcinoma; Preneoplastic lesions; microRNA; Adenocarcinoma; Aged; Barrett Esophagus; Biomarkers Tumor; Carcinogenesis; Early Detection of Cancer; Esophageal Neoplasms; Esophagogastric Junction; Female; Humans; In Situ Hybridization; Male; MicroRNAs; Middle Aged; Retrospective Studies; Reverse Transcriptase Polymerase Chain Reaction; Stomach Neoplasms; Up-RegulationTumormedicine.diagnostic_testmicroRNAReverse Transcriptase Polymerase Chain ReactionBarrett carcinogenesiIntestinal metaplasiaGeneral MedicineMiddle AgedUp-RegulationReverse transcription polymerase chain reactionmedicine.anatomical_structure030220 oncology & carcinogenesisAdenocarcinomaBiomarker (medicine)FemaleEsophagogastric Junctionmedicine.medical_specialty2734BiologyAdenocarcinoma03 medical and health sciencesBarrett EsophagusStomach NeoplasmsInternal medicineBiopsyBiomarkers TumormedicineHumansEsophagusAgedRetrospective StudiesGastric adenocarcinomaCancermedicine.diseasedigestive system diseasesBarrett carcinogenesis; Gastric adenocarcinoma; microRNA; Preneoplastic lesions; Adenocarcinoma; Aged; Barrett Esophagus; Biomarkers Tumor; Carcinogenesis; Early Detection of Cancer; Esophageal Neoplasms; Esophagogastric Junction; Female; Humans; In Situ Hybridization; Male; MicroRNAs; Middle Aged; Retrospective Studies; Reverse Transcriptase Polymerase Chain Reaction; Stomach Neoplasms; Up-Regulation; 2734MicroRNAs030104 developmental biologyBiomarkers
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Increased endocannabinoid levels reduce the development of precancerous lesions in the mouse colon

2007

Colorectal cancer is an increasingly important cause of death in Western countries. Endocannabinoids inhibit colorectal carcinoma cell proliferation in vitro. In this paper, we investigated the involvement of endocannabinoids on the formation of aberrant crypt foci (ACF, earliest preneoplastic lesions) in the colon mouse in vivo. ACF were induced by azoxymethane (AOM); fatty acid amide hydrolase (FAAH) and cannabinoid receptor messenger ribonucleic acid (mRNA) levels were analyzed by the quantitative reverse transcription polymerase chain reaction (RT-PCR); endocannabinoid levels were measured by liquid chromatography-mass spectrometry; caspase-3 and caspase-9 expressions were measured by W…

Cannabinoid receptormedicine.medical_treatment2-Arachidonoylglycerolpreneoplastic lesionsMass Spectrometrychemistry.chemical_compoundMice0302 clinical medicineFatty acid amide hydrolaseDrug DiscoveryFatty acid amide hydrolase (FAAH)Aberrant crypt fociGenetics(clinical)ReceptorReceptors CannabinoidGenetics (clinical)Medicine(all)0303 health sciencesCaspase 3Reverse Transcriptase Polymerase Chain ReactionEndocannabinoid systemCaspase 93. Good health2-arachidonoylglycerolColon cancer030220 oncology & carcinogenesisColonic NeoplasmsMolecular Medicinelipids (amino acids peptides and proteins)psychological phenomena and processesRapid CommunicationAberrant crypt focimedicine.medical_specialtyColonAzoxymethaneBiologydigestive systemAmidohydrolases03 medical and health sciencesInternal medicineCannabinoid Receptor ModulatorsmedicineAnimalsRNA MessengerCannabinoid receptors030304 developmental biologyAzoxymethaneendocannabinoiddigestive system diseasesEndocrinologychemistrynervous systemCancer researchCannabinoidcancer pharmacologyPrecancerous ConditionsEndocannabinoids
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Biological tolerance of different materials in bulk and nanoparticulate form in a rat model: sarcoma development by nanoparticles

2006

In order to study the pathobiological impact of the nanometre-scale of materials, we evaluated the effects of five different materials as nanoparticulate biomaterials in comparison with bulk samples in contact with living tissues. Five groups out of 10 rats were implanted bilaterally for up to 12 months with materials of the same type, namely TiO 2 , SiO 2 , Ni, Co and polyvinyl chloride (PVC), subcutaneously with bulk material on one side of the vertebral column and intramuscularly with nanoparticulate material on the contralateral side. At the end of each implantation time, the site was macroscopically examined, followed by histological processing according to standard techniques. Malign…

Skin NeoplasmsSilicon dioxideBiological; tolerance; different; materials; bulk; nanoparticulate; rat model; sarcoma; development; nanoparticlesRat modelBiomedical EngineeringBiophysicsNanoparticleMetal NanoparticlesBioengineeringBiocompatible MaterialsBiochemistryPreneoplastic lesionBiomaterialschemistry.chemical_compoundNickelBulk samplesMaterials TestingmedicineAnimalsPolyvinyl ChlorideTitaniumSarcomaCobaltmedicine.diseaseSilicon DioxideRatsPolyvinyl chloridechemistrySarcomaImplantation timeBiotechnologyBiomedical engineeringResearch Article
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