Search results for "FARM"

showing 10 items of 3554 documents

Cytotoxic geranylflavonoids from Bonannia graeca

2011

The analysis of the aerial parts of Bonannia graeca led to the isolation and characterization of two new polar geranylated flavonoids (6 and 7). The structure elucidation was performed by extensive spectroscopic methods (1D and 2D NMR) and comparison with literature data. All natural flavonoids isolated from B. graeca (1–7) and some synthetic derivatives (8–11) were tested for cytotoxic activity against four human tumor cell lines. Preliminary structure-activity relationship correlations are discussed.

Synthetic derivativesStereochemistryChemical structurePlant ScienceHorticultureBiochemistryArticleStructure-Activity RelationshipBonannia graecaCell Line TumorHumansCytotoxic T cellStructure–activity relationshipSettore BIO/15 - Biologia FarmaceuticaGeranylflavonoidsMolecular BiologyFlavonoidsApiaceaeMolecular StructurebiologyCytotoxic activityfungiEuphorbiaceaefood and beveragesGeneral MedicineSettore CHIM/06 - Chimica OrganicaPlant Components Aerialbiology.organism_classificationAntineoplastic Agents PhytogenicHuman tumorTwo-dimensional nuclear magnetic resonance spectroscopyApiaceae
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Soil Erosion Induced by the Introduction of New Pasture Species in a Faxinal Farm of Southern Brazil

2018

The faxinal management system is an endangered agro-silvopastoral system which forms part of the local traditional management in the Paraná federal state (Brazil). Significant changes in land management since the 1970s caused farmers to look for alternatives to increase the productivity of their farms. The introduction of new pasture species is causing land degradation problems, of which soil erosion is the most important challenge. Therefore, in this study, we assessed the environmental consequences of introducing exotic pasture species, such as Brachiaria decumbens. To achieve this goal, ten erosion plots were installed with exotic and native pastures (Paspalum notatum Flügg&e…

Sòls Erosió010504 meteorology & atmospheric sciences01 natural sciencesPastureFodderBrachiaria decumbensOrganic matterTraditional farming0105 earth and related environmental scienceschemistry.chemical_classificationgeographygeography.geographical_feature_categorybiologylcsh:QE1-996.504 agricultural and veterinary sciencesPE&RCbiology.organism_classificationPasture productionBulk densitytraditional farming; <i>Brachiaria decumbens</i>; land degradation; pasture productionlcsh:GeologychemistryAgronomy040103 agronomy & agricultureLand degradationErosion0401 agriculture forestry and fisheriesGeneral Earth and Planetary SciencesEnvironmental scienceLand degradationSoil fertilityPaspalum notatumGeosciences
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Soil Physical Quality of Citrus Orchards Under Tillage, Herbicide, and Organic Managements

2018

Abstract Soil capacity to support life and to produce economic goods and services is strongly linked to the maintenance of good soil physical quality (SPQ). In this study, the SPQ of citrus orchards was assessed under three different soil managements, namely no-tillage using herbicides, tillage under chemical farming, and no-tillage under organic farming. Commonly used indicators, such as soil bulk density, organic carbon content, and structural stability index, were considered in conjunction with capacitive indicators estimated by the Beerkan estimation of soil transfer parameter (BEST) method. The measurements taken at the L'Alcoleja Experimental Station in Spain yielded optimal values fo…

Sòls ErosióBeerkan estimation of soil transfer parameterSoil Science010501 environmental sciences01 natural sciencesstructural stability indexSoil compaction (agriculture)Soil managementorganic farmingSoil retrogression and degradationsoil quality assessmentSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliOrganic matter0105 earth and related environmental sciencesTotal organic carbonchemistry.chemical_classificationcapacitive indicator04 agricultural and veterinary sciencesPE&RCBulk densityTillageAgronomychemistry040103 agronomy & agricultureOrganic farming0401 agriculture forestry and fisheriesEnvironmental sciencesoil managementPedosphere
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Trigeminālās neiralģijas terapijas izaicinājumi Latvijā un Eiropā

2020

Šī darba mērķis bija novērtēt trigeminālās neiralģijas terapijas izacinājumus Latvijā. Lai izskaidrotu darba rezultātus, tika izmantots ne tikai zinātniskās literatūras apskats, bet darba ietvaros tika intervēti divi neirologi un viens stomatologs/ķirurgs, lai noskaidrotu kādu terapiju pielieto šie ārsti un cik bieži sastopas ar trigeminālo neiralģiju. Kā arī tika veikta, Jelgavas slimnīcas un Paula Stradiņa klīniskās universitātes slimnīcas trigeminālās neiroloģijas pacientu vēstures kartiņu analīze pa pēdējiem 3 gadiem. Darba rezultāti ir parādījuši, ka biežāk tiek diagnosticēti cilvēki vecuma grupā no 50 – 60 gadiem, un ietekmētais dzimums vairākumā ir sievietes. Latvijā tiek izmantota d…

SāpesFarmācijaFarmakoterapijaAnti - konvulsantiTrijzaru nerva neiralģija
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Role of IFN-gamma in immune responses to Candida albicans infections

2014

Candida albicans is the most frequent etiologic agent that causes opportunistic fungal infections called candidiasis, a disease whose systemic manifestation could prove fatal and whose incidence is increasing as a result of an expanding immunocompromised population. Here we review the role of interferon-gamma (IFN-γ) in host protection against invasive candidiasis. This cytokine plays an essential role in both the innate and adaptive arms of the immune response to candidiasis. We focus on recent progress on host-pathogen interactions leading to the production of IFN-γ by host cells. IFN-γ is produced by CD4 Th1, CD8, γδ T, and natural killer (NK) cells, essentially in response to both IL-12…

T-LymphocytesFarmacologíamedicine.medical_treatmentPopulationReviewDiseaseMicrobiologyIFN-gammaInterferon-gammaImmune systemCandida albicansmedicineHumansInterferon gammaeducationCandida albicanseducation.field_of_studybiologyCandidiasisbiology.organism_classificationCorpus albicansKiller Cells NaturalCytokineImmune SystemHost-Pathogen InteractionsImmunologyTh17 CellsInfectionCD8medicine.drug
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PATOGENESI MOLECOLARE DELL'EPATOCARCINOMA E TERAPIA FARMACOLOGICA.

2012

TERAPIA FARMACOLOGICA.Settore BIO/14 - FarmacologiaPATOGENESI MOLECOLARE DELL'EPATOCARCINOMA
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SYNTHESIS OF TETRACYCLIC SYSTEMS WITH POTENT ANTITUMOR ACTIVITY

2011

TETRACYCLIC SYSTEMS QUINOXALINES ANTITUMOR ACTIVITYQUINOXALINESTETRACYCLIC SYSTEMS; QUINOXALINES; ANTITUMOR ACTIVITYTETRACYCLIC SYSTEMSSettore CHIM/08 - Chimica FarmaceuticaANTITUMOR ACTIVITY
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3-CHLOROETHYL-PYRROLO[2,1-D][1,2,3,5]TETRAZINES: SYNTHESIS AND ANTITUMOR ACTIVITY

2011

TETRAZINES TEMOZOLOMIDE MITOZOLOMIDE ANTITUMOR ACTIVITYTETRAZINES; TEMOZOLOMIDE; MITOZOLOMIDE; ANTITUMOR ACTIVITYMITOZOLOMIDETEMOZOLOMIDETETRAZINESSettore CHIM/08 - Chimica FarmaceuticaANTITUMOR ACTIVITY
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Doliholu identifikācija un to līmeņu salīdzināšana žurku nierēs pēc poliprenolu un atorvastatīna ievadīšanas

2017

Latvijā poliprenoli tiek tirgoti kā uztura bagātinātāji, bet nav daudz zinātnisku pētījumu par to farmakoloģisko iedarbību. Iepriekšējie pētījumi in vivo ir apliecinājuši poliprenolu spēju samazināt statīnu izraisīto muskuļu vājumu laboratorijas dzīvniekiem. Darbojoties kā HMG-CoA reduktāzes inhibitori, statīni nobloķē mevalonskābes sintēzi un, iespējams, arī Q10, poliprenolu un doliholu sintēzi, un tiek pieļauts, ka muskuļu vājums ir tieši šo savienojumu līmeņu samazinājuma dēļ. Iespējams, ka eksogēni ievadīti poliprenoli veicina doliholu sintēzi. Darba mērķis ir ar šķidruma hromatogrāfijas masspektrometrijas (lidojuma laika (TOF)) metodi izpētīt, kāda tipa doliholi atrodas žurku nierēs, i…

TOFFarmācijaPoliprenoliDoliholiHromatogrāfija
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Azatioprīna terapijas riska izvērtēšana pacientiem ar iekaisīgām zarnu slimībām, pielietojot TPMT enzīma ekspresijas noteikšanas metodi

2017

Iekaisīgo zarnu slimību pacientu skaits arvien pieaug ne tikai pasaulē, bet arī Latvijā. Lai novērtētu medikamentu efektivitāti, ir iespējams analizēt enzīmu aktivitāti organismā. Viens no tiem ir TPMT enzīms, ko var novērtēt, lietojot tiopurīnu zāļu terapiju. Pētījuma mērķis bija veikt salīdzinošu TPMT enzīma aktivitātes novērtēšanas analīzi pacientiem ar kādu no iekaisīgām zarnu slimībām (čūlainais kolīts, Krona slimība), kuri jau lieto azatioprīna zāļu terapiju, ar pacientiem, kuri vēl nav sākuši lietot, lai izvērtētu iespējamo zāļu vielas blakņu risku. Lai noteiktu TPMT enzīma ekspresiju, tika izmantota ELISA metode. Pētījuma rezultāti liecina, ka tiem pacientiem, kuri šobrīd lieto azat…

TPMTtiopurīniFarmācijaazatioprīnsmielosupresijaiekaisīgo zarnu slimības
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