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1.
Farm. comunitarios (Internet) ; 14(Supl 1): 1, junio 2022. graf
Article in Spanish | IBECS | ID: ibc-209383

ABSTRACT

INTRODUCCIÓN: el síndrome de ojo seco (SOS) es una enfermedad multifactorial de las lágrimas y la superficie ocular, diversos factores de riesgo predisponen a padecerlo, entre ellos el consumo de ciertos medicamentos. El test OSDI (Ocular Surface Disease Index) validado al castellano, ha demostrado ser una herramienta fiable y sencilla para el diagnóstico del SOS.OBJETIVO: determinar si existe relación entre el SOS y el consumo de fármacos cuya RAM incluyen SOS.Establecer cuál es la influencia de los FR para el SOS en los pacientes estudiados y el SOS.MATERIAL Y MÉTODO: se realizó un estudio observacional descriptivo transversal en dos farmacias comunitarias de Salamanca entre octubre-2020 a enero-2021, utilizando un muestreo consecutivo simple que incluyo a 75 pacientes mayores de edad que acudan a las FC participantes a retirar medicación, sin dificultad de comprensión y que acepten participar firmando el consentimiento informado. Se recogieron los siguientes datos: edad, sexo, situación laboral, tiempo visión de pantallas consumo de alcohol y tabaco, enfermedad ocular, patologías, tratamiento farmacológico, además se realizó el test OSDI. Para las variables cuantitativas se realizó un estudio de tendencia central, media y desviación estándar, análisis de frecuencias para las cualitativas. Un análisis bivariante para comparar los grupos de ojo seco normal-leve, moderado y severo respecto del resto de variables. Se utilizó el test chi-cuadrado, Pearson para variables cualitativas y t-Student para la cuantitativas. Se realizó un análisis de regresión logística multinomial cuando se trataron los resultados del OSDI como variable continua. (AU)


Subject(s)
Humans , Pharmaceutical Preparations , Pharmacies , Tears , Diagnosis , Patients
2.
Plant Dis ; 81(9): 1095, 1997 Sep.
Article in English | MEDLINE | ID: mdl-30861977

ABSTRACT

Geminiviruses have become the most important virus group affecting tomatoes (Lycopersicon lycopersicum (L.) Karsten) in Cuba since they have been detected in all tomato-producing areas, causing serious losses. Recently, a whitefly-transmitted, monopartite geminivirus was detected in Cuba and identified as tomato yellow leaf curl virus-Israel (TYLCV-Is) (1). Samples collected from the main tomato-producing areas during the period 1995 to1996 were further analyzed by polymerase chain reaction (PCR) with degenerate primers (PAL1v1978 and PAR1c496) (2). Whereas in samples from most areas only TYLCV was detected, in some samples from the Havana area, two DNA fragments (approximately 1.4 and 1.1 kb) were amplified by PCR. The larger fragment was identified as part of the TYLCV-Is genome, confirming the previous report (1). The 1.1-kb fragment was cloned and its nucleotide sequence suggested that a new bipartite geminivirus was also present in those tomato samples. To clone the entire genome, tomato plants were inoculated by biolistics with DNA extract from field samples. After symptom expression, a viral DNA-enriched preparation from the inoculated tomatoes was independently digested with several restriction enzymes and the products were ligated into pZero plasmid (Invitrogen, San Diego, CA). Several clones in the 2.6-kb size range were characterized by restriction mapping and hybridization against component A and B heterologous probes. Two clones were selected as containing putative A and B components and their infectivity was tested by biolistic inoculation of tomato and pepper plants. The inoculated tomatoes developed a mild mottle in the younger leaves, whereas no symptoms were visible on the inoculated pepper plants. However, the presence of viral DNA was confirmed in both tomatoes and peppers by Southern blot hybridization analysis with A- and B-specific probes. Partial sequences of both components were obtained and their analysis showed that both components shared a 170-bases common region with a 95% identity. In addition, the nucleotide sequences of two open reading frames, one in each component (AC1 and BC1), were determined and compared with geminivirus sequences deposited in Gen-Bank. A dendogram generated with the CLUSTAL program and obtained with the AC1 and BC1 amino acid sequences, placed the new geminivirus in a cluster with tomato mottle virus (ToMoV; accession nos. L14460, L14461), Abutilon mosaic virus (AbMV; X15983, X15984), potato yellow mosaic virus (PYMV; D00940, D00941), and bean dwarf mosaic virus (BDMV; M88179, M88180). The percentages of identity obtained with the amino acid sequences were as follows. For AC1: ToMoV, 87%; PYMV, 79.5%; BDMV, 78.7%; and AbMV, 78%. For BC1 protein: BDMV, 92.8%; ToMoV, 89.1%; PYMV, 88.1%; and AbMV, 67.5%. In addition, the sequences were compared with partial nucleotide sequences (AC1, coat protein [CP], and common region) of a bipartite geminivirus affecting tomatoes in Jamaica (accession nos. U83855, U83854, and U83850). Interestingly, the common regions showed a higher percentage of identity (88%) than the CP and AC1 partial nucleotide sequences (86 and 74%, respectively). These data suggest that the virus reported here is a new geminivirus and the first bipartite geminivirus reported in Cuba. Thus, the name of Taino tomato mottle virus is proposed. (Taino refers to the name of the inhabitants of Cuba at the time of Columbus's arrival in the Caribbean). References: (1) P. L. Ramos et al. Plant Dis. 80:1208, 1996. (2) M. R. Rojas et al. Plant Dis. 77:340, 1993.

3.
Virus Genes ; 9(1): 77-83, 1994 Sep.
Article in English | MEDLINE | ID: mdl-7871764

ABSTRACT

Total RNA from infected Physalis floridana was isolated to generate complementary DNA corresponding to the coat protein (GP) gene of a Cuban isolate of potato leaf roll virus (PLRV). This cDNA was amplified by the polymerase chain reaction (PCR) and cloned into the bacterial expression vectors pEX(1-3) for fusion protein expression in E. coli. The product was detected by antibodies specific for the PLRV CP. The coding sequence of the CP gene was determined, and the predicted length of the CP was 208 amino acids (23 kD). The nucleotide sequences and deduced amino acid sequences were compared with the other PLRV isolates and found to be 97-99.5% identical at both the nucleotide and amino acid sequence level of other isolates. Comparison of the deduced amino acid sequences of the PLRVcub CP revealed considerable homology to other luteoviruses. We believe that the protocol described could be applicable to other plant viruses of low abundance or of cumbersome isolation, since this method is less time consuming than the traditional methods of cloning coat protein genes of plant viruses with known sequences.


Subject(s)
Capsid/genetics , Genes, Viral , Luteovirus/genetics , Viral Structural Proteins/genetics , Amino Acid Sequence , Base Sequence , Capsid/immunology , Cloning, Molecular , Cuba , DNA, Complementary/genetics , DNA, Viral/genetics , Escherichia coli/genetics , Luteovirus/classification , Luteovirus/isolation & purification , Molecular Sequence Data , Recombinant Fusion Proteins/genetics , Recombinant Fusion Proteins/immunology , Sequence Homology, Amino Acid , Sequence Homology, Nucleic Acid , Solanum tuberosum/virology
6.
Interferón biotecnol ; 6(3): 234-41, sept.-dic. 1989. ilus
Article in Spanish | CUMED | ID: cum-8500

ABSTRACT

El Bacillus thuringiensis (Bt.) vars. berliner y kurstaki, se han usado ampliamente como pesticidas. Estas bacterias producen durante la fase de esporulación una toxina con fuerte actividad lepidoptericida. Los genes que codifican para esas toxinas han sido clonados y expresados recientemente en plantas. Estas plantas transgénicas han mostrado toxicidad por ellas mismas contra los insectos. La metodología conocida como Reacción en Cadena de la Polimerasa (P.C.R.), muy recientemente desarrollada, permite la amplificación de un gen, usando la extensión del ADN por la ADN polimerasa a partir de iniciadores específicos. Un gen truncado conteniendo las 2/3 partes del terminal NH2 del gen original, fue aislado de una preparación de ADN total de esta bacteria usando P.C.R. Este gen quimérico fue acoplado directamente a un promotor inducible de E. coli. El producto del gen sintetizado en E. coli fue identificado por anticuerpos antitoxina y su actividad biológica fue testada usando larvas de Heliothis virescens. El análisis de la secuencia parcial del ADN muestra una alta homología con la secuencia reportada en la región 5', pero tiene una divergencia muy alta en la 3'.


Subject(s)
Bacillus thuringiensis/genetics , Gene Amplification , Toxins, Biological/genetics , Escherichia coli , Cloning, Molecular , Gene Expression
7.
Interferón biotecnol ; 6(3): 234-41, sept.-dic. 1989. ilus
Article in Spanish | LILACS | ID: lil-93467

ABSTRACT

El Bacillus thuringiensis (Bt.) vars. berliner y kurstaki, se han usado ampliamente como pesticidas. Estas bacterias producen durante la fase de esporulación una toxina con fuerte actividad lepidoptericida. Los genes que codifican para esas toxinas han sido clonados y expresados recientemente en plantas. Estas plantas transgénicas han mostrado toxicidad por ellas mismas contra los insectos. La metodología conocida como Reacción en Cadena de la Polimerasa (P.C.R.), muy recientemente desarrollada, permite la amplificación de un gen, usando la extensión del ADN por la ADN polimerasa a partir de iniciadores específicos. Un gen truncado conteniendo las 2/3 partes del terminal NH2 del gen original, fue aislado de una preparación de ADN total de esta bacteria usando P.C.R. Este gen quimérico fue acoplado directamente a un promotor inducible de E. coli. El producto del gen sintetizado en E. coli fue identificado por anticuerpos antitoxina y su actividad biológica fue testada usando larvas de Heliothis virescens. El análisis de la secuencia parcial del ADN muestra una alta homología con la secuencia reportada en la región 5', pero tiene una divergencia muy alta en la 3'.


Subject(s)
Bacillus thuringiensis/genetics , Cloning, Molecular , Escherichia coli , Gene Amplification , Gene Expression , Toxins, Biological/genetics
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