Papers by Rodolfo Salas-Auvert
Pharmaceutical Biology, Oct 1, 2000
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Pharmaceutical Biology, Oct 1, 2000
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El cadmio es un contaminante potencial para la biota acuatica cuya presencia en el ambiente provi... more El cadmio es un contaminante potencial para la biota acuatica cuya presencia en el ambiente proviene de los procesos industriales. Se determino la concentracion de cadmio, calcio y magnesio en muestras de tejido de tilapia roja (Oerochromis sp. Pisces: Cichlidae) despues de una exposicion sub letal por 6 meses a diversas concentraciones de cadmio. Se analizaron muestras de organos de 300 individuos con diferentes grados de alteracion. Los niveles de cadmio en muestras de rinon fueron significativamente mas altos que en higado, branquias, cerebro y columna vertebral (trunca1 y caudal). En peces con deformaciones visibles este incremento fue mayor. Los peces tratados con 50 y 100 ug/L de cadmio desarrollaron deformaciones vertebrales y de otras estructuras oseas. Las concentraciones de calcio y magnesio disminuyeron. en relacion a los peces controles y su decrecimiento se establecio proporcional a las concentraciones de exposicion del cadmio. Se analizaron, cortes histologicos de colu...
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Blood, 2010
5101 We report a 23 yr female patient which relates beginning of current illness three months pri... more 5101 We report a 23 yr female patient which relates beginning of current illness three months prior diagnosis; characterized with increased abdominal volume, concomitant active hemorrhagic manifestations consisting of ecchymosis and petechiae. Upon clinical, bone marrow biopsy, immunohistochemistry and subsequent surgery, case corresponded to Diffuse Large B-Cells Lymphoma(DLBCL) of splenic intravascular origin. Organ weight and size after splenectomy 2.53 Kg size 30×22×10 cm). Microscopic diagnosis description corresponds with presence of monomorphic lymphoid cells with predominance of small neoplasic lymphoid cells with small round nucleus, granular chromatin and small nucleolus accompanied with eventual cytoplasmic membrane irregularities. Presence of reactive plasmocytes and sever splenic congestion. The unusual case reported corresponds to an invasive lymphoma of splenic vascular origin. By our knowledge this is the first case register in Venezuela. Disclosures: No relevant con...
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Boletin Del Centro De Investigaciones Biologicas, 1998
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Bulletin of Experimental Biology and Medicine, 1989
... Vo Natochin, LV Reznik, Vo K. Brovtsyn, VB Ivanov, EM Myazina, PA Chel'tsov, and EI Shak... more ... Vo Natochin, LV Reznik, Vo K. Brovtsyn, VB Ivanov, EM Myazina, PA Chel'tsov, and EI Shakhmatova ... On the 5th day after injection, water was introduced into the stomach through a tube in a volume of 5 ml/100 g body weight, after which the urine was collected for 2 h. After the ...
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REVECITEC …, 2010
The effects of weak static and low-frequency magnetic fields on the growth rate of S. aureus are ... more The effects of weak static and low-frequency magnetic fields on the growth rate of S. aureus are investigated. The measurements were performed at incubator cabinet with static magnetic fields with magnitude in range 0.0 Oe ≤ Ho ≤ 14.0 Oe, and low-frequency magnetic fields with ...
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Chemistry & Biodiversity, 2014
The chemical composition of the essential oils of Origanum vulgare ssp. hirtum, growing wild in t... more The chemical composition of the essential oils of Origanum vulgare ssp. hirtum, growing wild in three different localities in the Southern Apennines, was studied by GC-FID and GC/MS analyses. In total, 103 compounds were identified. The oils were mainly composed of phenolic compounds and all oils belonged to the chemotype carvacrol/thymol. The three essential oils were evaluated for their in vitro phytotoxic activity by determining their influence on the germination and initial radicle elongation of Sinapis arvensis L., Phalaris canariensis L., Lepidium sativum L., and Raphanus sativus L. The seed germination and radicle growth were affected in various degrees. Moreover, the antifungal activity of the three essential oils was assayed against three species causing pre- and postharvest fruit decay (Monilinia laxa, M. fructigena, and M. fructicola). At 1000 ppm, the three oils completely inhibited fungal growth. The hemolytic activity of the oils was assayed and showed no effect on the cell membranes of bovine erythrocytes.
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El zamuro sobrevive al constante ataque infeccioso dado por su alimentacion. Determinaciones biol... more El zamuro sobrevive al constante ataque infeccioso dado por su alimentacion. Determinaciones biologicas en esta especie son escasas. Se caracterizo el contenido proteico serico y se realizo el serodiagnostico para determinar anticuerpos contra agentes patogenos de interes medico, veterinario y epidemiologico. La concentracion de Proteinas Totales (PT) se determino por refractometria. En la obtencion del patron proteico se utilizo la tecnica de EPAC. Los electroforegramas se obtuvieron por densimetria. Se utilizo pruebas de aglutinacion en placa, M. gallisepticum, S. pullurum y B. abortus. Inhibicion de la hemoaglutinacion, enfermedad de New Castle (EN) y hemoaglutinacion indirecta, T. gondii. El nivel de PT fue 4.8 f 0.9 g/dL.n=35, valor superior al reportado por Coleman, 1988, n=45,4 4.2 f 0.07 g/dL. El patron general consta de 4 bandas. ALB. G. ci 2, G & y G. V con elevacion de 2. La G.l esta ausente. Alta positividad, n=45, se observo para micoplasma, 71.1% (32%,1 : l o ) y toxop...
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The Auk, 1997
... DIAMOND, JM 1986. Why do disused proteins be-come genetically lost or repressed? Nature 351: ... more ... DIAMOND, JM 1986. Why do disused proteins be-come genetically lost or repressed? Nature 351: 565-566. ELLIOT, O., NJ YESS, AND DM HEGSTED. 1966. ... PAULING, L. 1970. Vitamin C and the common cold. WH Freeman and Company, San Francisco. PIANKA, ER 1994. ...
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Ciencia, 2011
... Oreochromis sp) Isabel Rengel-Zambrano*, Rodolfo Salas-Auvert, Magaly Chávez, Angel González,... more ... Oreochromis sp) Isabel Rengel-Zambrano*, Rodolfo Salas-Auvert, Magaly Chávez, Angel González, Belkis Borges y Eleuteria Bonalde Departamento de Biología, Facultad Experimental de Ciencias, Universidad del Zulia, Maracaibo, Venezuela, Apartado Postal 526. ...
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REVECITEC URBE, 2010
The effects of weak static and low-frequency magnetic fields on the growth rate of S. aureus are ... more The effects of weak static and low-frequency magnetic fields on the growth rate of S. aureus are investigated. The measurements were performed at incubator cabinet with static magnetic fields with magnitude in range 0.0 Oe ≤ Ho ≤ 14.0 Oe, and low-frequency magnetic fields with ...
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Plastic and …, 1998
... Jorge Bogarin, DDS. Rodolfo Salas-Auvert, MD. Julio M. Alvarado, MD. Service of Plastic and R... more ... Jorge Bogarin, DDS. Rodolfo Salas-Auvert, MD. Julio M. Alvarado, MD. Service of Plastic and Reconstructive Surgery; Hospital Universitario de Maracaibo; Av. ... Gooding, JM, Weng, JT, Kirby, RR, and Smith, RA Methylmethacrylate seeks an appeal. South. Med. J. 74: 1209, 1981. ...
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Pharmaceutical …, 2000
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Rev. Científ. FCV-LUZ. I (2), 1991
... some immunoserologycs determination Diana C. Ocando Ocando* Sergio E. Rivera Pirela**Eduardo ... more ... some immunoserologycs determination Diana C. Ocando Ocando* Sergio E. Rivera Pirela**Eduardo Ajjam* Rodolfo ... MATERIALES Y MÉTODOS Trabajo con et ave para su estudio y obtención de ... placas de acetato de celulosa (EPAC), inicialmente descrita por Kohm J. (1957 ...
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Journal of Chromatography A, 1995
An important factor contributing to the development of ion chromatography (IC) has been the need ... more An important factor contributing to the development of ion chromatography (IC) has been the need for repetitive analyses of samples with high ionic contents and samples available in microvolumes. IC was selected for the determination of Cl−, NO3−, SO42− and PO43− anions in tear fluid and serum from ten human volunteers of both sexes, seven young-adult black vultures (Coragyps atratus) and three young-adult chickens (Gallus gallus domesticus). The samples were analysed on a Dionex Model 2000i/SP ion-exchange chromatograph equipped with an anion guard column (Dionex IonPac AG4A), anion separator column (Dionex IonPac AS4A), suppressor column (Dionex AMMS-II) and a conductivity detector. The flow-rate of the mobile phase, 1.7 mM NaHCO3-1.8 mM Na2CO3 was set at 2.0 ml/min. The R.S.D. was calculated to be less than 1.5% for all anions. In the human, black vulture and chicken serum samples, the NO3−, PO43− and SO42− anion contents were higher than in tears; for Cl− the reverse was found. No correlation was found amongst the anion concentrations present in the tear fluid and blood serum in all samples (p > 0.05). With no sample treatment, column maintenance was required.
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Papers by Rodolfo Salas-Auvert