19 research outputs found

    First approaches in the study of cytotoxic and mutagenic damage induced by cold aqueous extract of Baccharis articulata on normal cells

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    Species of Genus Baccharis (Asteraceae) possess various bioactivities in vitro. The aim was to determine the cytogenotoxic activity of the cold aqueous extract (CAE) of Baccharis articulata. Peripheral blood lymphocytes from healthy individuals were in vitro faced to CAE (40, 78, 156, 313, 625 and 1250 ug/mL) for 18-24 h. Toxicity was evaluated by staining of trypan blue exclusion and MTT reduction. The genotoxicity was evaluated by the Micronucleus Test. Balb/c mice were injected with CAE (1800, 900 and 450 mg/kg), saline solution and cyclophosphamide as negative and positive controls respectively. Animals were sacrificed at 6 h post-injection. Bone marrow samples were fixed and stained with May- GrĂŒnwald and Giemsa. Two thousand polychromatic erythrocytes (PCE) were counted to determine number of micronuclei (MN) and normochromatic erythrocytes (NCE)/250 PCE to calculate toxicity index (TI). CAE toxicity on human lymphocytes was dose-dependent (Cytotoxic concentration 50% = 150 ug/mL). The number of MNPCE for negative control was: 5 (+1), positive control: 372 (+23) and CAE in three doses: 26 (+8), 16 (+5) and 8 (+3). TI for negative control: 1.38 (+0.35) positive control: 3.1 (+1.06) and CAE in three doses: 0.78 (+0.05), 0.82 (+0.08) and 1.21 (+0.2). CAE treatment showed no statistical difference respect to negative control. CAE of B articulata was not cytogenotoxic.Fil: Cariddi, Laura Noelia. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas; ArgentinaFil: Escobar, Franco Matias. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas; ArgentinaFil: Sabini, Maria Carola. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas; Argentina. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Torres, Cristina Vanesa. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Zygadlo, Julio Alberto. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto Multidisciplinario de BiologĂ­a Vegetal. Universidad Nacional de CĂłrdoba. Facultad de Ciencias Exactas FĂ­sicas y Naturales. Instituto Multidisciplinario de BiologĂ­a Vegetal; ArgentinaFil: Sabini, Liliana Ines. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; Argentin

    Reactive oxygen species-mediated degradation of antidiabetic compounds: Cytotoxic implications of their photodegradation products

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    Reactive oxygen species (ROS) have been described in their double physiological function, helping in the maintenance of health as well as contributing to oxidative stress. Diabetes mellitus is a chronical disease nearly related to oxidative stress, whose treatment (in type II variant) consists in the administration of antidiabetic compounds (Andb) such as Gliclazide (Gli) and Glipizide (Glip). In this context, as Andb may be exposed to high ROS concentrations in diabetic patients, we have studied the potential ROS-mediated degradation of Gli and Glip through photosensitized processes, in the presence of Riboflavin (Rf) vitamin. We found that singlet oxygen (O 2 ( 1 ∆ g )) participated in the Rf-sensitized photodegradation of both Andb, and also superoxide radical anion in the case of Gli. Two principal products derived from O 2 ( 1 ∆ g )-mediated degradation of Gli were identified and their chemical structures characterized, through HPLC mass spectrometry. O 2 ( 1 ∆ g )-mediated degradation products and their toxicity was assayed on Vero cell line. These studies demonstrated that neither Gli nor its photoproducts caused cytotoxic effect under the experimental conditions assayed. Our results show strong evidences of ROS-mediated Andb degradation, which may involve the reduction or loss of their therapeutic action, as well as potential cytotoxicity derived from their oxidation products.Fil: Challier, Cecilia. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas FisicoquĂ­micas y Naturales. Departamento de BiologĂ­a Molecular; ArgentinaFil: Laurella, Sergio Luis. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - La Plata. Centro de QuĂ­mica InorgĂĄnica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de QuĂ­mica InorgĂĄnica "Dr. Pedro J. Aymonino"; ArgentinaFil: Allegretti, Patricia Ercilia. Universidad Nacional de La Plata; ArgentinaFil: Sabini, Maria Carola. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Sabini, Liliana Ines. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Garcia, Norman Andino. Universidad Nacional de RĂ­o Cuarto; Argentina. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas FisicoquĂ­micas y Naturales. Departamento de QuĂ­mica; ArgentinaFil: Biasutti, Maria Alicia. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas FisicoquĂ­micas y Naturales. Departamento de QuĂ­mica; Argentina. Universidad Nacional de RĂ­o Cuarto; ArgentinaFil: Criado, Susana Noemi. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas FisicoquĂ­micas y Naturales. Departamento de QuĂ­mica; Argentina. Universidad Nacional de RĂ­o Cuarto; Argentin

    Minthostachys verticillata essentials oil and its major components: antiherpetic selective action in HEp-2 cells

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    The medicinal herb Minthostachys verticillata was studied in various fields of natural medicine. Numerous studies were made to evaluate its antimicrobial properties. This work emphasizes in the analysis of the antiviral capacity of its Essential Oil (EO). The aim of this study was to determine the Therapeutic Index (TI) of the EO and its main chemical components. Suid herpesvirus type 1 or Pseudorabies virus (Prv) was proliferated in HEp-2 cells in presence of non-toxic concentrations of the oily samples. Antiviral action was quantified by reducing the number of plaques of lysis. Previously, the cytotoxicity of the samples was evaluated and 50% Cytotoxic Concentration values (CC50) were determined. The TI was calculated by relating the cytotoxic concentrations of each sample vs. those concentrations active against the virus. The results showed that the major components of the EO were pulegone, menthone and limonene, with CC50 of 352, 835 and 1155 ÎŒg/mL respectively vs. the CC50 of EO: 613 ÎŒg/mL. The antiviral action was exerted by pulegone and the EO at concentrations 20 to 30 times lowers than the toxic concentrations. These IT values show the possible applicability of these compounds because they exert selective antiviral action.Fil: Vogt, Maria Veronica. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas FisicoquĂ­micas y Naturales. Departamento de BiologĂ­a Molecular; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; ArgentinaFil: Sutil, Sonia Beatriz. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Escobar, Franco Matias. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; Argentina. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Sabini, Maria Carola. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; Argentina. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Cariddi, Laura Noelia. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; Argentina. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Torres, Cristina Vanesa. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Zanon, Silvia Matilde. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Sabini, Liliana Ines. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; Argentin

    Action of extracts obtained with organic solvents from Minthostachys verticillata(Griseb.) Epling on viability of Herpes simplex Type 1 virus (HSV-1)

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    It has demonstrated “in vitro” antimicrobial activity exerted by extracts from Minthostachys verticillata (peperina). Objective: Investigate antiviral action of organic extracts of peperina against Herpes simplex virus. Experimental: Vero cells and Herpes simplex virus type 1 strain KOS were used. Aerial vegetal parts of plant were submitted to sequential extraction with n-hexane, chloroform and methanol for 48 h at room temperature. Extracts n-hexanic (N-HE), chloroformic (CE) and methanolic (ME) were obtained. They were added on cell monolayers, and incubated for 48 h at 37°C. Cell viability was determinated by Neutral Red uptake (NRU) after treatment of cells with different concentrations of extracts (10-1000 ÎŒg/ml). The same method was performed to evaluate antiviral action exerted by N-HE (100-250 ÎŒg/ml), CE (100-500 ÎŒg/ml) and ME (range 80-200 ÎŒg/ml). Results and discussion: The three extracts showed dose-dependent cytotoxic activity on Vero cells with CC50 values: 502 ÎŒg/ml for CE, 244 ÎŒg/ml for N-HE and 192 ÎŒg/ml for ME. The replication of Herpes simplex virus type 1 “in vitro” was inhibited by each extract at non cytotoxic concentrations. The extracts showed selectivity of action because all concentrations tested inhibited more than 60% of viral production. The results are promising for future natural therapy antiherpetic.Fil: Sabini, Maria Carola. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de CĂłrdoba. Instituto de Investigaciones en Ciencias de la Salud; ArgentinaFil: Cariddi, Laura Noelia. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Biotecnologia Ambiental y Salud. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Biotecnologia Ambiental y Salud.; ArgentinaFil: Escobar, Franco Matias. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Aguilar, Juan Javier. Universidad Nacional de CĂłrdoba. Facultad de Medicina. Instituto de VirologĂ­a Dr. J. M. Vanella; ArgentinaFil: Tonn, Carlos Eugenio. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - San Luis. Instituto de Investigaciones en TecnologĂ­a QuĂ­mica. Universidad Nacional de San Luis. Facultad de QuĂ­mica, BioquĂ­mica y Farmacia. Instituto de Investigaciones en TecnologĂ­a QuĂ­mica; ArgentinaFil: Contigiani de Minio, Marta Silvia. Universidad Nacional de CĂłrdoba. Facultad de Medicina. Instituto de VirologĂ­a Dr. J. M. Vanella; ArgentinaFil: Sabini, Liliana Ines. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; Argentin

    Lack of cytotoxic and genotoxic effects of Minthostachys verticillata essential oil: Studies in vitro and in vivo

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    Minthostachys verticillata (peperina) is an aromatic and medicinal plant with several uses and ethnobotanical properties. Numerous studies have demonstrated that its essential oil (Mv-EO) presents antimicrobial capacity and shows immunomodulating and anti-allergic properties in human cell lines. Thus, the goal of this study was to investigate the main chemical composition, analyzed by GC?FID, and the cyto-genotoxic effects of Mv-EO, using Vero cells, human PBMCs and mice bone marrow cells. The Mv-EO was rich in pulegone 60.5% and menthone 18.2%. Our results clearly show that Mv-EO is not cyto-genotoxic in vitro nor in vivo. It not induced cytotoxic effects, as indicated by trypan blue dye exclusion and NRU assays both in Vero cells and human PBMCs. In addition, Mv-EO (100?1000 ÎŒg/mL) not induced apoptotic effects on human PBMCs, as indicated by Hoechst staining and DNA fragmentation analysis by agarose gel electrophoresis. The in vivo assay showed that Mv-EO (25?500 mg/kg) not increased the frequency of micronucleus in bone marrow cells of mice. Further, the ratio of polychromatic/normochromatic erythrocytes was not modified. These findings suggest that Mv-EO appears to be safe as a therapeutic agent.Fil: Escobar, Franco Matias. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; Argentina. Universidad Nacional de RĂ­o Cuarto; ArgentinaFil: Cariddi, Laura Noelia. Universidad Nacional de RĂ­o Cuarto; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; ArgentinaFil: Sabini, Maria Carola. Universidad Nacional de RĂ­o Cuarto; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; ArgentinaFil: Reinoso, Elina BeatrĂ­z. Universidad Nacional de RĂ­o Cuarto; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; ArgentinaFil: Sutil, Sonia Beatriz. Universidad Nacional de RĂ­o Cuarto; ArgentinaFil: Torres, Cristina Vanesa. Universidad Nacional de RĂ­o Cuarto; ArgentinaFil: Zanon, Silvia Matilde. Universidad Nacional de RĂ­o Cuarto; ArgentinaFil: Sabini, Liliana InĂ©s. Universidad Nacional de RĂ­o Cuarto; Argentin

    Protective role of chlorogenic acid on DNA damage caused by ochratoxin A exposure

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    Chlorogenic acid (ChlA) has shown short-term protective effects against the cytogenotoxiceffects of ochratoxin A (OTA). The present study evaluated the effect of oraladministration of ChlA in male Wistar rats exposed to OTA. OTA (0.4 mg/kg bw/day), ChlA (5 mg/kg bw/day), or the combination of both, were administered orally toanimals during 28 days. No deaths, decrease in feed consumption or change in the bodyweight of animals were observed in any group. In the OTA-treated group a decrease inlocomotion as well as increased DNA damage in blood, kidney and bone marrow cellswere observed. ChlA alone was not genotoxic for animals. The combination of OTA+ChlA decreased the DNA damage by 37% in blood cells, by 55% in kidney cells andby 80% in bone marrow cells compared to OTA-treated group. In conclusion, oraltreatment with ChlA showed a good protective effect on genotoxicity produced byOTA in rats during 28 days exposure.El ĂĄcido clorogĂ© nico (ChlA) mostrĂł efectos protectores a corto plazo contra los efectos citogenotĂłxicos de ocratoxina A (OTA). En el presente estudio se evaluĂł si este polifenol mantiene su efecto protector mediante la administraciĂłn oral en ratas Wistar machos expuestas a OTA. OTA (0,4 mg/kg/dĂ­a), ChlA (5 mg/kg/dĂ­a), o la combinaciĂłn de ambos, fueron administrados a los animales por vĂ­a oral durante 28 dĂ­as. No se observaron muertes, ni disminuciĂłn en el consumo de alimento, ni cambios en el peso corporal en ningĂșn grupo de animales. En el grupo tratado con OTA se observĂł disminuciĂłn en la locomociĂłn, asĂ­ como daño en el ADN en las cĂ© lulas de sangre, riñó n y mĂ© dula Ăłsea. En los animales que solo recibieron ChlA no se observaron efectos genotĂłxicos. La combinaciĂłn de OTA + ChlA disminuyĂł el daño del ADN en un 37%en las cĂ© lulas sanguĂ­neas, en un 55% en las cĂ© lulas renales y en un 80% en las cĂ© lulas de la mĂ© dula Ăłsea con respecto al grupo tratado con OTA. En conclusiĂłn, el tratamiento oral con ChlA mostrĂł buen efecto protector sobre la genotoxicidad producida por OTA en ratas durante 28 dĂ­as de exposiciĂłn.Fil: Campra, Noelia AnahĂ­. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas FisicoquĂ­micas y Naturales. Instituto de BiotecnologĂ­a Ambiental y Salud - Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de BiotecnologĂ­a Ambiental y Salud; ArgentinaFil: Cariddi, Laura Noelia. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas FisicoquĂ­micas y Naturales. Instituto de BiotecnologĂ­a Ambiental y Salud - Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de BiotecnologĂ­a Ambiental y Salud; ArgentinaFil: Escobar, Franco Matias. Universidad Nacional de RĂ­o Cuarto; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; ArgentinaFil: Sabini, Maria Carola. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas FisicoquĂ­micas y Naturales. Instituto de BiotecnologĂ­a Ambiental y Salud - Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de BiotecnologĂ­a Ambiental y Salud; ArgentinaFil: Freire de lima, Celio Geraldo. Universidade Federal do Rio de Janeiro; BrasilFil: Decote Ricardo, Debora. Universidade Federal do Rio de Janeiro; BrasilFil: Roma, Dardo AndrĂ©s. Universidad Nacional de RĂ­o Cuarto; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; ArgentinaFil: Mañas, Fernando Javier. Universidad Nacional de RĂ­o Cuarto; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; ArgentinaFil: Dalcero, Ana Maria. Universidad Nacional de RĂ­o Cuarto; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba; Argentin

    Evaluation of cellular safety and the chemical composition of the peanut (Arachis hypogaea L.) ethanolic extracts

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    Arachis hypogaea L. (Leguminosae) is distributed in tropical and subtropical areas. Peanut has high nutritional and commercial value. Scientific research showed that peanut has biological properties such as anticancer, antioxidant, antiinflammatory. However, it is necessary to know if consumption of peanut, either as food or as a phytopharmaceutical implies a health risk. The aim was to evaluate cytotoxicity and genotoxicity of ethanolic extracts from A. hypogaea. Also, chemical characterization of these extracts was performed. Cytotoxicity was evaluated by MTT and Neutral Red Uptake (NRU) assays on Vero cells. Genotoxicity was studied by Micronuclei and comet assays on Balb/C mice. Qualitative and quantitative chemical analysis of extracts were performed. Results showed that extracts have low cytotoxicity. Tegument ethanolic extract (TEE) and Seed ethanolic extract (SEE) were not genotoxic. The treatments with TEE at 250 mg/kg and SEE at 2000 mg/kg revealed (highest concentrations evaluated) some toxicity on blood marrow cells of mice. Chemical characterization indicated that TEE had 74.33 1.10 mg GAE/g of dried extract and SEE had 15.05 0.06 mg GAE/g of dried extract of total phenolic content. Also, proanthocyanidins (O.D. at 550 nm 1.39 0.15) and caffeic acid (2.46%) were identified in TEE. While, linoleic acid (58.84%) oleic acid (11.31%) and palmitic acid (8.37%) were major compounds of SEE. In conclusion, peanut consumption is safe at concentrations recommended for healthy uses, such as nutrition, and phytomedicine.Fil: Menis Candela, Florencia. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Biotecnología Ambiental y Salud - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Biotecnología Ambiental y Salud; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología; ArgentinaFil: Giordano, Walter Fabian. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Biotecnología Ambiental y Salud - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Biotecnología Ambiental y Salud; ArgentinaFil: Quiroga, Patricia Liliana. Universidad Nacional de Córdoba. Facultad de Medicina; ArgentinaFil: Escobar, Franco Matias. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología; ArgentinaFil: Mañas, Fernando Javier. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Agronomía y Veterinaria; ArgentinaFil: Roma, Dardo Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Agronomía y Veterinaria; ArgentinaFil: Larrauri, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: Comini, Laura Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas; Argentina. Ceprocor; ArgentinaFil: Soria, Elio Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Córdoba. Facultad de Medicina; ArgentinaFil: Sabini, Maria Carola. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Biotecnología Ambiental y Salud - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Biotecnología Ambiental y Salud; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología; Argentin

    Historia de las plantas medicinales

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    Las plantas medicinales han sido utilizadas desde épocas remotas para el tratamiento de numerosas enfermedades. Desde los inicios de la civilización, han ayudado al hombre ofreciendo distintos tipos de medicinas capaces de curar ciertas dolencias gracias a sus compuestos naturales. El conocimiento sobre las plantas medicinales y sus propiedades se ha ido transmitiendo en las distintas culturas y a sus generaciones, a través del tiempo. Este conocimiento se ha mantenido de ?boca en boca?, permitiendo que no se pierda el saber adquirido con los años.Esta información ha sido la base de gran parte de la medicina tradicional y es considerada un patrimonio de la humanidad, por lo que nos compete a todos conocer y cuidar nuestras plantas medicinales.Fil: Sabini, Maria Carola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; ArgentinaFil: Menis Candela, Florencia. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología; ArgentinaFil: Beoletto, Viviana. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología; Argentin

    Antiviral effect and mode of action of methanolic extract of Verbascum thapsus L. on pseudorabies virus (strain RC/79)

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    The methanolic extract of Verbascum thapsus was evaluated for its antiviral activity against the pseudorabies virus strain RC/79 (PrV), and also for its cytotoxic activity on Vero cells. The extract showed CC50 values of 1100gmL1 and 1426gmL1 by NRU and MTT assays, respectively. The 50% inhibitory concentration of the extract for PrV plaque formation was determined at 35gmL1, and selectivity indices were 31.4 (NRU) and 40.7 (MTT). When cells were pre-treated with the extract prior to virus infection, the inhibition in plaque formation was 70%. PrV was highly inhibited when it was incubated with plant extract or when the extract was added during the adsorption phase (99%). However, no inhibitory effect was observed when the extract was added to the cells after the adsorption period. Thus, these results suggest that the methanolic extract of Verbascum thapsus may contain bioactive compound(s) that affect PrV mostly in the adsorption phase.Fil: Escobar, Franco Matias. Universidad Nacional de Rio Cuarto. Facultad de Agronomia y Veterinaria. Instituto de Ciencias Veterinarias. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Ciencias Veterinarias.; Argentina. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Sabini, Maria Carola. Universidad Nacional de CĂłrdoba; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de CĂłrdoba. Instituto de Investigaciones en Ciencias de la Salud; ArgentinaFil: Zanon, Silvia Matilde. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; ArgentinaFil: Tonn, Carlos Eugenio. Universidad Nacional de San Luis; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - San Luis. Instituto de Investigaciones en TecnologĂ­a QuĂ­mica. Universidad Nacional de San Luis. Facultad de QuĂ­mica, BioquĂ­mica y Farmacia. Instituto de Investigaciones en TecnologĂ­a QuĂ­mica; ArgentinaFil: Sabini, Liliana Ines. Universidad Nacional de RĂ­o Cuarto. Facultad de Ciencias Exactas, FisicoquĂ­micas y Naturales. Departamento de MicrobiologĂ­a e InmunologĂ­a; Argentin

    Safety assessment of essential oil from Minthostachys verticillata (Griseb.) Epling (peperina): 90-Days oral subchronic toxicity study in rats

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    Minthostachys verticillata (Lamiaceae), popularly known as peperina is largely used in popular medicine for its digestive, carminative, antispasmodic and antirheumatic properties. There are no reports of repeated exposure toxicity to guarantee their safety. The present study investigated the chemical composition, analyzed by GC-FID, and the 90-day toxicity and genotoxicity effect of M. verticillata essential oil (Mv-EO), using Wistar rats as test animals. The rats were divided into four groups (5. rats/sex/group) and Mv-EO was administered on diet at doses of 0, 1, 4 and 7. g/kg feed. The main components of Mv-EO were pulegone (64.65%) and menthone (23.92%). There was no mortality, adverse effects on general conditions or changes in body weight, food consumption and feed conversion efficiency throughout the study in male and female rats. Subchronic administration of Mv-EO did not alter the weights, morphological and histopathological analyses of liver, kidney and intestine. Genotoxicity was tested by micronucleus and comet assays. Mv-EO up to a concentration of 7 g/kg feed for 90. days did not exert a cyto-genotoxic effect on the bone marrow and cells blood of Wistar rats. These results suggest that Mv-EO appears to be safe and could be devoid of any toxic risk.Fil: Escobar, Franco Matias. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sabini, Maria Carola. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cariddi, Laura Noelia. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sabini, Maria Carola. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mañas, Fernando Javier. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cristofolini, Andrea Lorena. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Bagnis, Guillermo. Universidad Nacional de Río Cuarto; ArgentinaFil: Gallucci, Mauro Nicolas. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Santiago del Estero. Universidad Nacional de Santiago del Estero. Centro de Investigaciones y Transferencia de Santiago del Estero; ArgentinaFil: Cavaglieri, Lilia Reneé. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
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