Browsing Medicina, ciencias biomédicas y salud pública by Type
Now showing items 1-20 of 454
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A case-control study of breast cancer and hormonal contraception in Costa Rica
(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 detailed analysis of open-field habituation and behavioral and neurochemical antidepressant-like effects in postweaning enriched rats
(2009-01-30)Our previous work has shown that male Sprague–Dawley rats reared in social isolation, standard housing and environmental enrichment differ in their spontaneous open-field activity and in some neurobehavioral depressive-like ... -
A high performance liquid chromatography method with electrochemical detection of gamma-aminobutyric acid, glutamate and glutamine in rat brain homogenates
(2009)Determination of γ-aminobutyric acid (GABA), glutamate (Glu) and glutamine (Gln) in animal models has been important to understand the normal function and clinical aspects of some neurological diseases. Quantification of ... -
A new look at the determinants of nonnumeric response to desired family size: the case of Costa Rica
(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
(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 Population-based Serosurveillance of Syphilis in Costa Rica
(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 review of Bioinformatics training applied to research in Molecular Medicine, Agriculture and Biodiversity in Costa Rica and Central America
(Briefings in Bioinformatics, 14(5): 661-670, 2013-04-13)Today, Bioinformatics has become a scientific discipline with great relevance for the Molecular Biosciences and for the Omics sciences in general. Although developed countries have progressed with large strides in ... -
A schizophrenia gene locus on chromosome 17q21 in a new set of families of mexican and central american ancestry: evidence from the NIMH genetics of schizophrenia in latino populations study
(Am J Psychiatry 2009;166:442-449, 2009-02-02)The present study investigated a new set of families of Latin American ancestry in order to detect the location of genes predisposing to schizophrenia and related psychotic disorders. Method: A genome-wide scan was performed ... -
A Second Locus for an Axonal Form of Autosomal Recessive Charcot-Marie-Tooth Disease Maps to Chromosome 19q13.3
(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 ... -
A video image analyzing system for open-field behavior in the rat focusing on behavioral asymmetries
(1993)A video image analyzing system is presented which measures turning behavior, thigmotactic scanning and locomotion in rats. The system works by analyzing digitized video images obtained by a black/white video camera. Turning ... -
Aberraciones cromosómicas en trabajadoras expuestas a plaguicidas
(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
(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 ... -
Acción de algunos antihelmínticos sobre Angiostrongylus costaricensis
(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
(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
(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)
(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 ... -
Adjudicating Neurocognitive Endophenotypes for Schizophrenia
(American Journal of Medical Genetics Part B (Neuropsychiatric Genetics) 144B:242–249 (2007), 2007-03-05)Although genetic influences on schizophrenia are well established, localization of the genes responsible for this illness has proven extremely difficult. Given evidence that genes predisposing to schizophrenia may be ... -
Age-dependent effects of environmental enrichment on spatial memory and neurochemistry
(2015)Although aging and environmental stimulation are well-known to affect cognitive abilities, the question of whether aging effects can be distinguished in already-mature adult rats has not been fully addressed. In the ... -
Agentes virales y bacterianos en niños hospitalizados con infección respiratoria aguda: Brote epidemiológico
(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
(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. ...