Now showing items 1-20 of 426

    • A case-control study of breast cancer and hormonal contraception in Costa Rica 

      Rosero Bixby, Luis; Grimaldo Vásquez, Carmen; Rovira, Elizabeth; Lee, Nancy C.; Oberle, Mark W.; Watley, Anne S. (1987)
      By 1981, 11% of married women in Costa Rica ages 20-49 years had used depot-medroxyprogesterone acetate (DMPA) and 58% had used oral contraceptives (OCs). Since 1977, the Costa Rican Ministry of Health has maintained a ...
    • A DNA pooling based system to detect Escherichia coli virulence factors in fecal and wastewater samples 

      Cortés Bratti, Ximena; Chacón Jiménez, Luz María; Taylor Castillo, Mayra Lizeth; Valiente Álvarez, Carmen Isabel; Alvarado Pérez, Irene (2012)
      The availability of a useful tool for simple and timely detection of the most important virulent varieties of Escherichia coli is indispensable. To this end, bacterial DNA pools which had previously been categorized were ...
    • A new look at the determinants of nonnumeric response to desired family size: the case of Costa Rica 

      Riley, Ann P.; Hermalin, Albert I.; Rosero Bixby, Luis (1993)
      High levels of nonresponse or inappropriate response to items are a persistent concern in survey research because those who do not answer may not be representative of the study population. Thus nonresponse introduces ...
    • A novel myosin heavy chain gene in human chromosome 19q13.3 

      Leal Esquivel, Alejandro; Endele, Sabine; Stengel, Corinna; Huehe, Kartrin; Loetterle, Joachim; Barrantes Mesén, Ramiro; Winterpacht, Andreas; Rautenstrauss, Bernd (Gene: 312 p. 165-171, 2003-07)
      A human myosin heavy chain gene was identified in chromosome 19q13 by computational sequence analysis, RT-PCR and DNA sequencing of the cDNA. The complete cDNA has a length of 6786 bp and comprises 41 exons (40 coding) ...
    • A polymorphism in the MSH3 mismatch repair gene is associated with the levels of somatic instability of the expanded CTG repeat in the blood DNA of myotonic dystrophy type 1 patients 

      Morales Montero, Fernando; Vásquez Cerdas, Melissa; Santamaría Ulloa, Carolina; Cuenca Berger, Patricia; Corrales Acuña, Eyleen Vanessa; Monckton, Darren G. (2016-04)
      Somatic mosaicism of the expanded CTG repeat in myotonic dystrophy type 1 is age-dependent, tissuespecific and expansion-biased, contributing toward the tissue-specificity and progressive nature of the symptoms. Previously, ...
    • A Population-based Serosurveillance of Syphilis in Costa Rica 

      Larsen, Sandra A.; Oberle, Mark W.; Sánchez Braverman, Juana M.; Rosero Bixby, Luis; Vetter, Kathleen M. (1991-04)
      As part of a case-control study to investigate the high incidence of cervical cancer in Costa Rican women, the seroprevalence of the treponematoses, in particular, syphilis was determined. In each age group, women with a ...
    • A public health approach to the “Food-Malnutrition-Economic Recession” complex 

      Mata Jiménez, Leonardo (1988)
      The authors in this volume disagree as to whether the current economic world recession and its accompanying adjustment policies affect nutrition and health. Based on the data presented throughout this volume and the ...
    • A Second Locus for an Axonal Form of Autosomal Recessive Charcot-Marie-Tooth Disease Maps to Chromosome 19q13.3 

      Leal Esquivel, Alejandro; Morera Brenes, Bernal; del Valle Carazo, Gerardo; Heuss, Dieter; Kayser, Corinna; Berghoff, Martin; Villegas Palma, Ramón; Hernández, Erick; Méndez, María; Hennies, Hans Christian; Bernhard, Neundörfer; Barrantes Mesén, Ramiro; Reis, André; Rautenstrauss, Bernd (American Journal Human Genetic ; 68 (1 p. 269-274, 2001)
      Autosomal recessive Charcot-Marie-Tooth disease (CMT) represents a heterogeneous group of disorders affecting the peripheral nervous system. The axonal form of the disease is designated as "CMT type 2" (CMT2), and one locus ...
    • Abdominal angiostrongylosis 

      Morera Villalobos, Pedro (1995)
      Abdominal angiostrongylosis, caused by Atigiostrongylus costaricensis (Morera and Cespedes, 1971) or Morerastrongylus rostaricensis (Chabaud, 1972), is a parasitic disease characterized by a granulomatous inflammatory ...
    • Aberraciones cromosómicas en trabajadoras expuestas a plaguicidas 

      Cuenca Berger, Patricia; Ramírez Mayorga, Vanessa (Revista de Biología Tropical 52(3) p.623-628, 2004-12-15)
      The purpose of this work was to determine if the occupational exposure to those pesticides used at banana plantations’ packaging plants produces genetic damage to somatic cells of female workers. Chromosomal aberrations ...
    • Ablactación y alimentación de niños en una zona rural de Costa Rica 

      Ulate Castro, Emilce; Murillo González, Sandra; Mata Jiménez, Leonardo; Sánchez Montero, Francisco (1986-09)
      En nutrición y salud infantil existen diversos aspectos de estudio sobre lactancia natural y prácticas de ablactación (1-8). Uno de ellos se refiere al conocimiento de la respuesta biológica del niño a la calidad y cantidad ...
    • Abordaje integral de pacientes costarricenses afectados con la enfermedad de Huntington y sus familiares 

      Vásquez Cerdas, Melissa; Campos Ramírez, Domingo; Gutiérrez Doña, Benicio; Fernández Morales, Húberth; Morales Montero, Fernando; Cuenca Berger, Patricia (2011)
      Objetivo: Realizar el diagnóstico molecular a personas afectadas con la enfermedad de Huntington y familiares con el 50% de riesgo, y brindarles asesoramiento genético, seguimiento y evaluación psicológica y clínica, con ...
    • Acción de algunos antihelmínticos sobre Angiostrongylus costaricensis 

      Bontempo García, Ileana; Morera Villalobos, Pedro (1985)
      Cotton rats (Sigmodon hispidus) infected with 50L3 of Angiostrongylus costaricensis were treated with thiabendazole, levamisole and diethylcarbamazine; the administration of the drugs was started 40 days after the infection. ...
    • Acrylamide: dermal exposure produces genetic damage in male mouse germ cells 

      Gutiérrez Espeleta, Gustavo A.; Hughes, Lori A.; Piegorsch, Walter W.; Shelby, Michael D.; Generoso, Walderico M. (1992)
      Acrylamide Is used extensively in sewage and wastewater treatment plants, in the paper and pulp industry, in treatment of potable water, and in research laboratories for chromatography, eltetrophoresis. and electron ...
    • Actividad sexual prematrimonial en Costa Rica: incidencia, tendencias y determinantes 

      Rosero Bixby, Luis (1991)
      Según un modelo de riesgo en que se utilizaron datos retrospectivos de una muestra nacional de mujeres costarricenses de entre 15 y 24 años entrevistadas en 1986, cada año aproximadamente el 10 por ciento de las mujeres ...
    • Acute diarrhoea with Cryptosporidium sp. in Belém, Brazil (preliminary report) 

      Brito-Loureiro, Edvaldo Carlos; da Costa-Linhares, Alexandre; Mata Jiménez, Leonardo (1986-03)
      Cryptosporidium sp was detected in faeces from three children suffering from acute diarrhoea. In two cases no other concomitant agents were detected and in a 3rd. this agent was associated with Entamoeba histolytic, Entamoeba ...
    • Agentes etiológicos infecciosos de la diarrea 

      Mata Jiménez, Leonardo (1985)
      En los últimos años, se ha logrado comprender mejor la epidemiología de la diarrea, aunque todavía muchos sectores, incluso profesionales, persisten en La creencia popular de que el síndrome es causado por "indigestión" ...
    • Agentes virales y bacterianos en niños hospitalizados con infección respiratoria aguda: Brote epidemiológico 

      Salas Chaves, Pilar; Achí Araya, María Rosario; Mata Jiménez, Leonardo; Chavarría Milanés, José Fernando (1985)
      Nasopharyngeal aspirates were recollected from 76 hospitalized children with acute respiratory infection (ARI). Plastic disposable collectors provided with a sterile feeding probe were used to obtain secretions. Aspirates ...
    • AIDS and HIV infection in Costa Rica – a country in transition 

      Herrera, Gisela; Mata Jiménez, Leonardo (1988)
      Costa Rica, located in the Central American Isthmus about 10' north of the Equator, is bordered by Nicaragua and the Caribbean Sea in the north and east, Panama in the east, and the Pacific Ocean in the south and west. ...
    • AIDS in Costa Rica: Estimates for 1990-1994 by the quadratic and other simple equations 

      Mata Jiménez, Leonardo; Albertazzi, Constantino; Marranghello, Leonardo (1990)
      The 1990-1994 projections of the AIDS epidemic in Costa Rica were calculated using five equations: linear, exponential, logarithmic, power and quadratic. The quadratic and power equations gave he best fit. The quadratic ...