Biomédica: revista del Instituto Nacional de Salud (BIOMEDICA )

Publisher: Instituto Nacional de Salud (Colombia)


Impact factor 0.62

  • Hide impact factor history
    Impact factor
  • 5-year impact
  • Cited half-life
  • Immediacy index
  • Eigenfactor
  • Article influence
  • Website
    Biomedica website
  • Other titles
    Biomédica (Online)
  • ISSN
  • OCLC
  • Material type
    Document, Periodical, Internet resource
  • Document type
    Internet Resource, Computer File, Journal / Magazine / Newspaper

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Histoplasmosis is a multifaceted condition caused by the dimorphic fungi Histoplasma capsulatum whose infective spores are inhaled and reach the lungs, the primary organ of infection. The meningeal form, considered one of the most serious manifestations of this mycosis, is usually seen in individuals with impaired cellular immunity such as patients with acquired immunodeficiency syndrome, systemic lupus erythematous or solid organ transplantation, and infants given their immunological immaturity. The most common presentation is self-limited and occurs in immunocompetent individuals who have been exposed to high concentrations of conidia and mycelia fragments of the fungi. In those people, the condition is manifested by pulmonary disorders and late dissemination to other organs and systems. We report a case of central nervous system histoplasmosis in an immunocompetent child.
    Biomédica: revista del Instituto Nacional de Salud 12/2014; 34(4):506-13.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The aging of the population is a universal epidemiological phenomenon which is not unfamiliar to us and is accompanied by a marked increase of life expectancy. Age-dependent comorbidities, such as hearing disorders, are more prevalent and affect the quality of life in a noticeable manner. To estimate the prevalence of hearing disorders, of the associated factors and their impact on the quality of life of older adults in Bogota. Data was taken from the Bogotá SABE Study, which included 2,000 individuals aged =60 years in a probabilistic cross-sectional study sampled by clusters (with 81.9% coverage). We used the "hearing disorders" variable relating it to socio-demographic variables, as well as to the use of hearing aids, the self-perceived health, the comorbidities, the functionality, the cognition and the quality of life as measured with the Visual Analog Scale of the EuroQol Group (EQ-VAS). We found a prevalence of hearing disorders in 267 individuals (13.5%), of whom 15% used hearing aids. The frequency was higher in individuals aged =75 years (46.1%), in the low socioeconomic level (20.2%) and among illiterate people (19.3%, p<0.05). Regarding comorbidities, we found a higher prevalence in individuals suffering from depression (20.2%, p<0.001), and high blood pressure (15%, p<0.01). The quality of life was worse in individuals with hearing disorders, as measured with the EuroQol EQ-VAS (60.93 ± 1.38 vs. 71.75 ± 0.45, p< 0.0001), but it improved among those who used hearing aids as compared to those who did not use them (59.59 ± 1.52, p<0.01). Hearing disorders are relevant in elderly individuals and they affect their perceived quality of life in a noticeable manner. In addition, they are associated with other clinical, functional and cognitive problems. Nevertheless, the intervention with hearing aids reverses that perception.
    Biomédica: revista del Instituto Nacional de Salud 12/2014; 34(4):574-9.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The overall prevalence of Helicobacter pylori infection is high in Colombia; however, in the country´s Andean region, gastric cancer rates far surpass those in coastal areas. Helicobacter pylori genotypes cagA positive and vacA s1 and m1 are associated with an increased risk of gastric cancer. To compare the distribution of H. pylori genotypes associated with virulence in two regions in Colombia with opposing risk for gastric cancer. Four hundred and one gastric antral biopsies were obtained and analyzed from 401 individuals diagnosed with non-atrophic gastritis, atrophic gastritis and intestinal metaplasia: 256 came from the high-risk area cities of Tunja and Bogotá, and 145 from the low-risk area cities of Barranquilla, Santa Marta and Cartagena. Genotyping of virulence genes vacA and cagA was performed by PCR. No difference was observed in the frequency of H. pylori infection between the two areas (77.3% vs 77.9 %, p=non significant, ns). The presence of cagA was higher in the low-risk area (77.9% vs. 69.2 %, p=ns). The vacA s1 allele was also more prevalent in the low-risk area (61.8 % vs 72.0 %, p=ns). The vacA m1 allele was more prevalent in the high-risk area (57.2 % vs 42.8 %, p=ns). The cagA positive s1m1 combination was also more frequent in the low-risk area (48.9% vs 38.9%, p=ns). The differences in the risk of gastric cancer in these two geographic areas cannot be explained by differences in the prevalence of infection by H. pylori or by differences in the virulence of circulating strains.
    Biomédica: revista del Instituto Nacional de Salud 12/2014; 34(4):567-73.
  • Biomédica: revista del Instituto Nacional de Salud 12/2014; 34(4):503-5.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Continuous positive airway pressure (CPAP) is useful in low birth weight infants with respiratory distress, but it is not known if it is a better alternative to mechanical ventilation after early pulmonary surfactant administration. To compare the incidence of adverse events in 28 to 32-week newborns with respiratory distress managed with mechanical ventilation or CPAP after early surfactant administration. In total, 176 newborns were treated with CPAP and 147 with mechanical ventilation, all with Apgar scores >3 at five minutes and without apnea. The incidence of CPAP failure was 6.5% (95% CI: 11.3-22.8%); 29 patients died: 7 with CPAP (4.0%) and 22 with mechanical ventilation (15.0%, p<0.001). The relative risk of dying with CPAP versus mechanical ventilation was 0.27 (95% CI: 0.12-0.61), but after adjusting for confounding factors, CPAP use did not imply a higher risk of dying (RR=0.60; 95% CI: 0.29-1.24). Mechanical ventilation fatality rate was 5.70 (95% CI: 3.75-8.66) deaths/1,000 days-patient, while with CPAP it was 1.37 (95% CI: 0.65-2.88, p<0.001). Chronic lung disease incidence was lower with CPAP than with mechanical ventilation (RR=0.71; 95% CI: 0.54-0.96), as were intracranial hemorrhage (RR=0.28, 95% CI: 0.09-0.84) and sepsis (RR=0.67; 95%CI: 0.52-0.86), and it was similar for air leaks (RR=2.51; 95% CI: 0.83-7.61) and necrotizing enterocolitis (RR=1.68, 95% CI: 0.59-4.81). CPAP exposure of premature infants with respiratory distress syndrome is protective against chronic lung disease, intraventricular hemorrhage and sepsis compared to mechanical ventilation. No differences were observed regarding air leak syndrome or death.
    Biomédica: revista del Instituto Nacional de Salud 12/2014; 34(4):612-23.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Self-medication is an increasingly frequent phenomenon worldwide; some studies suggest that there is a relationship with socio-economic and cultural factors. To determine the prevalence of self-medication and its related factors in a Colombian city. Cross-sectional descriptive study, in Pereira, Colombia. We selected 414 adults using simple randomization sampling with houses used as the observational unit. The IRIS-AM instrument was used to collect the information required. Four hundred and fourteen (414) people were interviewed, 62.6% were females, and mean age was 44 years; 77.5% of the sample had self-medicated at least once in their life and 31.9% during the last month. The most commonly used medications were: analgesics and antipyretics (44.3%), non-steroidal anti-inflammatory drugs and anti-rheumatic medication (36.4%), and anti-histamine medication (8.5%). The most commonly self-medicated symptoms were: headache (55.7%), cold (16.2%) and muscular pain (13.2%). Multivariate analysis revealed an association between self-medication throughout life and storing medications at home, and between a high level of education and having a favorable opinion of self-medication. Storing medications at home and recommending them to others were associated with self-medication during the previous 30 days. Self-medication rates were found to be similar to those reported globally, but there is not an established pattern for this practice. Associations were found between social and demographic variables and self-medication, which require further characterization. Intention to self-medicate has not been well-described in other studies, and may be an important indicator which will contribute to future understanding of this phenomenon.
    Biomédica: revista del Instituto Nacional de Salud 12/2014; 34(4):580-8.
  • [Show abstract] [Hide abstract]
    ABSTRACT: In Colombia, periurban populations of Lutzomyia longipalpis , vector of the causative agent of visceral leishmaniasis in the upper and middle valley of the Magdalena River, may be exposed to insecticide applications with different purposes. Thus, it is important to begin a susceptibility surveillance of this species to insecticides. To determine indicators of susceptibility to three insecticides habitually used in public health, such as malathion, deltamethrin and lambda-cyhalothrin in an experimental strain of L. longipalpis . We used the method proposed by the Centers for Disease Control and Prevention. Groups of 10 to 15 unfed females were exposed to different concentrations of the insecticides using 250 ml glass bottles as test chambers. Mortality was registered every five minutes for an hour. Diagnostic concentrations and lethal times for each insecticide were calculated. In the evaluated L. longipalpis strain, the diagnostic concentrations and times were 75 µg/ml and 25 minutes for malathion, 10 µg/ml and 35 minutes for deltamethrin, and 15 µg/ml during 30 minutes for lambda-cyhalothrin. Baseline data over mortality response to three insecticides were established in a susceptibility strain of L. longipalpis vector. These indicators will allow establishing comparisons with populations of L. longipalpis exposed regularly or sporadically to chemical control measures to detect changes in their resistance to these insecticides.
    Biomédica: revista del Instituto Nacional de Salud 12/2014; 34(4):624-30.
  • Biomédica: revista del Instituto Nacional de Salud 12/2014; 34(4):605-11.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Tuberculosis is a relevant global public health problem. Although reports of the World Health Organization show decrease in overall mortality rates, Colombia and Medellin show no significant decline. To describe the sociodemographic, clinical, diagnosis, and treatment characteristics of patients who died due to tuberculosis in Medellin, Colombia, during 2012. A descriptive study of tuberculosis deaths reported in the city. 93 deaths were identified, of which 32 were confirmed as directly caused by tuberculosis (34.4%); in 23 deaths (24.7%) tuberculosis was an associated cause. Co-morbidities were found in 34 patients (61.7%), HIV being the most common with 18 cases important(32.7%). Social risk factors such as being homeless, drug addiction or having no fixed address were found in 32 cases (58.1%); and there were deficiencies in the healthcare system in 26 cases (47.2%). No meaningful delay in the onset of anti-tuberculosis treatment was found after the microbiological diagnosis; however, 64% of patients did not adhere to treatment. Mortality caused by tuberculosis in Medellin is a relevant problem associated with delays in diagnosis of the disease and lack of adherence to treatment.
    Biomédica: revista del Instituto Nacional de Salud 09/2014; 34(3):425-32.
  • [Show abstract] [Hide abstract]
    ABSTRACT: In Colombia, zosteriform leishmaniasis is a little-known and infrequent clinical variant of cutaneous leishmaniasis. Its clinical features include one or more plaques made up of papules and pseudo-vesicles, which conform to a lineal pattern, as well as satellite lesions that affect one or more dermatomes, without crossing the median line. We present three zosteriform cutaneous leishmaniasis cases in which Leishmania panamensis and Leishmania braziliensis were identified as the infective species. In light of the fact that the disease occurs infrequently, diagnosis was reached by taking into account epidemiological and clinical suspicion.
    Biomédica: revista del Instituto Nacional de Salud 09/2014; 34(3):340-4.
  • [Show abstract] [Hide abstract]
    ABSTRACT: An updated list of phlebotomine sand flies species in coffee growing areas in the Colombian Andean region is presented. Fifty three species were reported from 12 departments. In addition, species distribution in the region was derived from specimens obtained during intensive field work in five departments, from previously published studies and from the taxonomic revision of specimens in the entomological collection of the Programa de Estudio y Control de Enfermedades Tropicales (PECET). The list includes the genera Brumptomyia (2 species), Lutzomyia (50 species) and Warileya (1 species). The updated list contains eleven new records in the region under study, including Lutzomyia panamensis , a species of medical importance not recorded previously in this zone. Eighteen of the species are considered to be anthropophilic, and many of them have been implicated in the transmission of leishmaniasis.
    Biomédica: revista del Instituto Nacional de Salud 09/2014; 34(3):483-98.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Is necessary to develop models for the study of leptospirosis. To genotype a Colombian strain of Leptospira isolated from a human with Weil´s syndrome and to evaluate its infection dynamics in the hamster experimental model. Genotyping was performed by amplification and sequence analysis of the rrs 16S and lipL32 genes. The median lethal dose was determined in intraperitoneally inoculated hamsters. The patterns of clinical chemistry, the duration of leptospiremia, leptospiruria and pathological findings were studied and compared in the same animal model infected with L. interrogans (Fiocruz L1-130). Molecular typing revealed that the isolate corresponded to the pathogenic species L. santarosai, which was recovered from hamsters´ kidneys and lungs and detected by lipL32 PCR from day 3 post-infection in these organs. There was a marked increase of C-reactive protein in animals at day 5 post-infection (3.25 mg/dl; normal value: 0.3 mg/dl) with decreases by day 18 (2.60 mg/dl: normal value: 0.8 mg/dl). Biomarkers of urea showed changes consistent with possible renal acute failure (day 5 post-infection: 49.01 mg/dl and day 18 post-infection: 53.71 mg/dl). Histopathological changes included interstitial pneumonia with varying degrees of hemorrhage and interstitial nephritis. The pathogenic species L. santarosai was identified in Colombia. Its pathogenicity as determined by tropism to lung and kidney was comparable to that of L. interrogans Fiocruz L1-130, well known for its virulence and pulmonar tropism. The biological aspects studied here had never before been evaluated in an autochthonous isolate.
    Biomédica: revista del Instituto Nacional de Salud 09/2014; 34(3):460-72.