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1.
Int J Biol Macromol ; 205: 1-14, 2022 Apr 30.
Artigo em Inglês | MEDLINE | ID: mdl-35181318

RESUMO

This study proposes a simple route to obtain starch grafted copolymers from cassava and banana starches chemically modified with amphiphilic maleic anhydride-poly (ethylene glycol) methyl ether (Ma-mPEG). The starches were extracted from cassava (StC) and banana (StB) pulp and characterized by FTIR spectroscopy, amylose content, scanning electron microscope (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and average molecular weight. Starches were chemically modified with amphiphilic Ma-mPEG in three mass ratios 1:1, 1:2 and 1:3. Thermal behavior and interactions of Ma-mPEG/starch in the St-g-(Ma-mPEG) copolymers were studied by DSC and TGA. The Tg values showed a higher plasticizer effect in the copolymers obtained from StC. Films were formed from StC-g-(Ma-mPEG) and StB-g-(Ma-mPEG) copolymers, thermal and morphological properties were studied. An increase in the mass ratios of Ma-mPEG and the absence of the glycerol in the formulations formed homogeneous films. StC-g-(Ma-mPEG) 1:3 with 2% concentration showed a potential use as coating in strawberries, presenting a lower weight loss (15.5 ± 5.7%) than the control sample (18.6 ± 3.3%).


Assuntos
Manihot , Éteres Metílicos , Musa , Anidridos Maleicos , Polietilenoglicóis/química , Amido/química
2.
Biomedica ; 26(1): 61-70, 2006 Mar.
Artigo em Espanhol | MEDLINE | ID: mdl-16929904

RESUMO

INTRODUCTION: Recently, dengue hemorrhagic fever with unusual neurological and hepatic manifestations has been reported in children, with a concomitant increase in morbidity and mortality. OBJECTIVE: To describe unusual clinical manifestations of dengue hemorrhagic fever in children. MATERIALS AND METHODS: These manifestations were systematically scrutinized in dengue cases occurring between 1992-2004 in the Pediatrics Department of the University Hospital of Santander, Bucaramanga, Colombia. Case reports were examined of 913 patients with clinical symptoms of dengue hemorrhagic fever. They were classified according to standard criteria for dengue hemorrhagic fever and grouped according to the main organs or systems that were affected. Clinical presentation, laboratory results and medical evolution were summarized. RESULTS: Of the 913 cases, 168 showed abnormal clinical manifestations; these were predominant in male school age children and associated mainly with grades III and IV of dengue hemorrhagic fever. The most frequent manifestations were as follows: hepatitis--53 cases (27%), neurological alterations--49 (25%), renal impairment--14 (7%), cardiac involvement--15 (8%), pulmonary alterations--18 (9%), alithiasic cholecistitis--18 (9%), haemophagocitic syndrome--5 (2.5%), pancreatitis--2 (1%), and acute abdominal pain--21 (11%). Ten patients died. CONCLUSIONS: The results were compared with data from other endemoepidemic countries of dengue. The significance and importance of abnormal dengue were explored, as well as the difficult retrospective diagnoses. Hepatic and neurological manifestations were recognized as frequently involved in elevated morbidity and mortality. Physicians working in endemic zones should be aware of them in order to recognize them.


Assuntos
Dengue Grave/fisiopatologia , Adulto , Criança , Pré-Escolar , Colômbia/epidemiologia , Humanos , Lactente , Recém-Nascido , Masculino , Estudos Retrospectivos , Dengue Grave/complicações , Dengue Grave/diagnóstico , Dengue Grave/epidemiologia
3.
Mol Cancer Ther ; 14(10): 2401-8, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26227487

RESUMO

Circulating tumor cells (CTC) express epithelial and stem cell-like genes, though current approved detection methods mainly use epithelial markers. We optimized a CTC isolation method that could capture their molecular heterogeneity and predict overall survival (OS) in metastatic colorectal cancer (mCRC) patients receiving various chemotherapy regimens. We combined immunomagnetic enrichment of CD45-negative, EpCAM-positive circulating cancer cells with qRT-PCR amplification of CK20 and survivin expression in 88 mCRC patients and 20 healthy controls. We then evaluated the prognostic value of baseline CTC CK20 and survivin expression in mCRC patients. The presence of elevated CTC CK20 or survivin expression distinguished mCRC patients from controls with sufficient sensitivity (79.6%) and specificity (85%). In univariate analysis, patients with high CTC-CK20 expression (9 vs. 33.2+ months, log-rank P < 0.001) or high CTC-survivin expression (10 vs. 33.2+ months, log-rank P = 0.032) had a significantly worse median OS than those with low expression of either marker. In multivariable analysis, the high CTC-CK20 group had significantly shortened OS (HR, 3.11; adjusted P = 0.01), and there was a trend toward inferior OS in the high CTC-survivin group (HR, 1.76; adjusted P = 0.099). Patients with either high CTC CK20 or survivin expression had inferior OS compared with those with low expression of both markers (HR, 4.39; 95% confidence interval, 1.56-12.35; adjusted P = 0.005). Colorectal cancer CTCs can be reliably isolated using epithelial and stem cell markers. CTC CK20 and survivin expression may effectively predict OS in mCRC patients receiving chemotherapy.


Assuntos
Biomarcadores Tumorais/metabolismo , Neoplasias Colorretais/metabolismo , Proteínas Inibidoras de Apoptose/metabolismo , Neoplasias Hepáticas/metabolismo , Células Neoplásicas Circulantes/metabolismo , Antineoplásicos/uso terapêutico , Biomarcadores Tumorais/genética , Estudos de Casos e Controles , Linhagem Celular Tumoral , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/mortalidade , Neoplasias Colorretais/patologia , Feminino , Expressão Gênica , Humanos , Separação Imunomagnética , Proteínas Inibidoras de Apoptose/genética , Estimativa de Kaplan-Meier , Queratina-20/genética , Queratina-20/metabolismo , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/secundário , Masculino , Pessoa de Meia-Idade , Prognóstico , Modelos de Riscos Proporcionais , Curva ROC , Reação em Cadeia da Polimerase em Tempo Real , Survivina
4.
Biomedica ; 23(2): 180-93, 2003 Jun.
Artigo em Espanhol | MEDLINE | ID: mdl-12872557

RESUMO

In Bucaramanga, Colombia, dengue haemorrhagic fever (DHF) has become endemo-epidemic since 1992. A cross-sectional study covering a period of 10 years (February, 1992 to February, 2002) was undertaken in children under 13 years of age hospitalized at the University Hospital. Observations were recorded on the clinical features, laboratory tests and the natural development of the disease. A total of 763 patients were examined, of whom 617 were classified as having DHF according to the WHO criteria (9.1% Grade I, 61.5% Grade II, 21.7% Grade III and 7.5% Grade IV). One hundred forty six patients could not be classified. The highest incidence took place in 1997, 1998 and 2001. Seventy four per cent of patients came from the metropolitan area of Bucaramanga; 48% were males; 0.3%, newborns; 11.8%, infants; 23%, pre-school children, and 64.9%, school children. The most important clinical features were fever and haemorrhagic manifestations (100%); vomiting (60%); abdominal pain (57%); headache (50%); osteomyalgia (40.8%); hepatomegaly (33%), and macular rash (29%). Among the haemorrhagic manifestations we found petechiae (56%); positive tourniquet test (35%); gastrointestinal bleeding (34%), and epistaxis (32%). Serous effusion was found in 17.7% of cases. Alarm signs of shock were found in 29%. Fifty two per cent had leucopenia and 37.3% atypic lymphocytes. Among other unusual manifestations were hepatitis, encephalopathy, alithiasic cholecystitis, acute renal failure, haemophagocytic syndrome and coinfections. Of the 617 cases, 12 died (1.5%).


Assuntos
Vírus da Dengue/isolamento & purificação , Surtos de Doenças , Hemorragia/virologia , Dengue Grave/epidemiologia , Adolescente , Criança , Pré-Escolar , Colômbia/epidemiologia , Feminino , Hemorragia/diagnóstico , Hemorragia/epidemiologia , Humanos , Lactente , Recém-Nascido , Masculino , Estudos Retrospectivos , Dengue Grave/complicações , Dengue Grave/diagnóstico
5.
Biomedica ; 22(2): 160-6, 2002 Jun.
Artigo em Espanhol | MEDLINE | ID: mdl-12152482

RESUMO

The haemophagocytic syndrome is characterised by systemic proliferation of non-neoplastic histiocytes showing haemophagocytosis resulting in blood cytopenia. It has been described in relation to several viruses earlier. We present three patients with haemophagocytic syndrome (HFS) secondary to dengue haemorrhagic fever (DHF) confirmed by standard laboratory tests. The patients were hospitalized at the University Hospital (Hospital Universitario Ramón González Valencia-HURGV) in Bucaramanga, Colombia, during the past two years. They were all school-aged patients who presented DHF with intense abdominal pain, prolonged fever, hypotension and painful hepatomegaly. Laboratory tests showed thrombocytopenia, anaemia and leukopenia. A calculous cholecystitis was observed in the abdominal ultrasonography, and all bone marrow aspirations showed that platelets, red and white blood cells were phagocyted by histiocytes. According to the International Society of Histiocytosis, SHF is defined and classified in three major categories; the reported cases corresponded to histiocytosis class II, specifically to secondary SHF. Diverse associations of this syndrome correspond to viral infections and some other non-infectious diseases. A difference has been established between primary SHF and secondary SHF. Finally, we emphasize that these three patients had an atypical evolution of FHD, being prolonged fever and persistent abdominal pain the most important symptoms. The authors recommend that a bone marrow aspiration should be carried out as part of the differential diagnosis study in prolonged fever associated with dengue, as there is a possibility that this complication could be secondary SHF.


Assuntos
Histiocitose de Células não Langerhans/etiologia , Dengue Grave/complicações , Dor Abdominal/etiologia , Infecções Bacterianas/sangue , Exame de Medula Óssea , Criança , Pré-Escolar , Diagnóstico Diferencial , Feminino , Histiocitose de Células não Langerhans/diagnóstico , Humanos , Imunoglobulina M/sangue , Masculino , Dengue Grave/imunologia
6.
PLoS One ; 6(11): e26694, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-22073185

RESUMO

Parasitoid disturbance populations in agroecosystems can be maintained through the provision of habitat refuges with host resources. However, specialized herbivores that feed on different host plants have been shown to form host-specialized races. Parasitoids may subsequently specialize on these herbivore host races and therefore prefer parasitizing insects from the refuge, avoiding foraging on the crop. Evidence is therefore required that parasitoids are able to move between the refuge and the crop and that the refuge is a source of parasitoids, without being an important source of herbivore pests. A North-South transect trough the Chilean Central Valley was sampled, including apple orchards and surrounding Pyracantha coccinea (M. Roem) (Rosales: Rosacea) hedges that were host of Eriosoma lanigerum (Hemiptera: Aphididae), a globally important aphid pest of cultivated apples. At each orchard, aphid colonies were collected and taken back to the laboratory to sample the emerging hymenopteran parasitoid Aphelinus mali (Hymenoptera: Aphelinidae). Aphid and parasitoid individuals were genotyped using species-specific microsatellite loci and genetic variability was assessed. By studying genetic variation, natural geographic barriers of the aphid pest became evident and some evidence for incipient host-plant specialization was found. However, this had no effect on the population-genetic features of its most important parasitoid. In conclusion, the lack of genetic differentiation among the parasitoids suggests the existence of a single large and panmictic population, which could parasite aphids on apple orchards and on P. coccinea hedges. The latter could thus comprise a suitable and putative refuge for parasitoids, which could be used to increase the effectiveness of biological control. Moreover, the strong geographical differentiation of the aphid suggests local reinfestations occur mainly from other apple orchards with only low reinfestation from P. cocinnea hedges. Finally, we propose that the putative refuge could act as a source of parasitoids without being a major source of aphids.


Assuntos
Afídeos/genética , Produtos Agrícolas/parasitologia , Fluxo Gênico , Himenópteros/genética , Malus/parasitologia , Controle Biológico de Vetores , Animais , Produtos Agrícolas/genética , Malus/genética , Repetições de Microssatélites/genética
7.
Cancer ; 100(4): 710-4, 2004 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-14770425

RESUMO

BACKGROUND: Breast Imaging Reporting and Data System (BI-RADS) Category 3 represents 'probably benign' mammographic abnormalities requiring close follow-up, but biopsies sometimes are performed on Category 3 abnormalities. Controversy exists as to when these biopsies are justified. The goals of the current study were to evaluate the use of stereotactic vacuum-assisted breast biopsy (SVABB) for BI-RADS 3 lesions in a nonacademic community hospital-based practice, to evaluate the false- negative rate of Category 3 mammograms, and to determine whether any specific lesions misinterpreted as BI-RADS 3 abnormalities might commonly be associated with malignant disease. METHODS: From August 2000 to December 2002, the authors performed 947 SVABB procedures on 911 patients. They focused on 156 SVABBs of BI-RADS 3 abnormalities. RESULTS: Of 634 SVABB procedures requested by outside sources, 114 (18%) were performed for BI-RADS 3 abnormalities, compared with 42 (13%) of 313 SVABB procedures that were performed based on mammographic findings at the authors' practice (P = 0.075). After SVABB, 7 of 156 patients with BI-RADS 3 lesions were diagnosed with breast carcinoma and 1 was diagnosed with atypical ductal hyperplasia. Therefore, the false-negative rate of BI-RADS 3 mammograms was 4.5% (i.e., 7 of 156 patients). Patients with linear microcalcifications had the highest rate of cancer (4 of 14 [29%]) compared with patients without microcalcifications (1 of 64 [1.5%]) and patients with nonlinear microcalcifications (2 of 69 [2.9%]). CONCLUSIONS: The use of SVABB for BI-RADS 3 lesions reflected uncertainty regarding the potential for a diagnosis of malignant disease rather than the financial incentive of performing a biopsy. SVABB was not necessary for patients with BI-RADS 3 lesions without microcalcifications or for patients with nonlinear microcalcifications. Lesions with linear (casting or branching) microcalcifications should not be considered BI-RADS 3 abnormalities.


Assuntos
Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/patologia , Hospitais Comunitários/estatística & dados numéricos , Mamografia/métodos , Adulto , Biópsia/métodos , Doenças Mamárias/diagnóstico por imagem , Doenças Mamárias/patologia , Calcinose/diagnóstico por imagem , Calcinose/patologia , Tomada de Decisões , Diagnóstico Diferencial , Reações Falso-Negativas , Feminino , Humanos , Variações Dependentes do Observador , Sensibilidade e Especificidade , Técnicas Estereotáxicas , Vácuo
8.
Med. UIS ; 21(3): 126-135, sept.-dic. 2008. tab
Artigo em Espanhol | LILACS | ID: lil-613746

RESUMO

Bucaramanga y su área metropolitana (Santander, Colombia) es actualmente una región endemoepidémica de dengue. El dengue presenta un amplio espectro de manifestaciones clínicas entre ellas las neurológicas. Objetivos: describir las diferentes manifestaciones neurológicas de la fiebre hemorrágica dengue en niños menores de 12 años hospitalizados en el departamento de Pediatría del Hospital Universitario de Santander. Correlacionar las manifestaciones neurológicas de la fiebre hemorrágica dengue según su presentación clínica, con la fase de la enfermedad en que se presentan. Alertar al personal de salud y comunidad médica en las áreas endémicas de dengue sobre las manifestaciones neurológicas de ésta entidad. Metodología: estudio descriptivo de casos, realizado en el departamento de Pediatría del Hospital Universitario de Santander en niños menores de 12 años. Revisión retrospectiva de base de datos EpiInfo, de pacientes con diagnóstico de egreso fiebre hemorrágica dengue desde enero de 1992 a diciembre 2006. Selección de pacientes que tuvieron manifestaciones neurológicas y confirmación inmunológica (serología IgM). Las manifestaciones neurológicas se clasificaron en cuatro grupos: encefalitis, encefalopatía, síndromes convulsivos y otras. Resultados: en el período analizado, egresaron con diagnóstico de fiebre hemorrágica dengue 1246 pacientes menores de 12 años. De estos egresos 106 pacientes presentaron manifestaciones neurológicas. Clasificación por grupos: 10 encefalitis, falleció 1 paciente; 35 encefalopatía (secundaria a choque 19 y a hepatitis 16), en este grupo fallecieron 7 pacientes; 42 síndrome convulsivo (febriles 39 y diagnóstico previo de epilepsia 3) y 19 en el grupo otras. Conclusiones: 1) Pacientes que durante la fase febril de fiebre hemorrágica dengue presenten trastornos de conciencia y/o conducta, convulsiones, y/o signos de focalización, la primera posibilidad diagnóstica es encefalitis. 2) Pacientes que durante la defervescencia presenten manifestaciones clínicas neurológicas persistentes caracterizadas por convulsiones, trastornos de conciencia y/o conducta, asociadas a choque, hepatitis o insuficiencia renal aguda, debe sospecharse encefalopatía. 3) Las convulsiones aisladas en la fase febril de fiebre hemorrágica dengue, en la mayoría de los casos corresponden a crisis febriles sin compromiso neurológico. 4) En pacientes con fiebre hemorrágica dengue, las alteraciones transitorias de conciencia o conducta con pronta resolución se explican por el cuadro febril y metabólico. 5) En zonas endemoepidémicas de dengue en pacientes con manifestaciones neurológicas y fiebre, debe tenerse en cuenta ésta enfermedad dentro del diagnóstico diferencial.


Bucaramanga and its metropolitan area (Santander, Colombia) is today an endemoepidemic region of dengue. Dengue represents a great spectrum of clinical manifestations including neurological manifestations. Objectives: Describe the different neurological manifestations of Dengue Hemorrhagic Fever in children under 12 years old admitted to the Department of Pediatrics of the University Hospital of Santander. Correlate neurological manifestations of DHF according to its clinical presentation with the phases of the disease in which they present. Alert the health personal and medical community in the endemic areas of dengue about the neurological manifestations of this entity. Methods: Descriptive study of cases, realized in the department of pediatrics UIS-HUS in children under 12 years old. Retrospective review of the data base EpiInfo, of patients discarded from the hospital with diagnose of Dengue Hemorrhagic Fever since January 1992 to December 2006. Selection of patients that presented neurological manifestations and immunologic confirmation (serologic diagnosis by IgM). The neurological manifestations where classified in 4 groups: encephalitis, encephalopathy, seizures and others. Results: In the period analyzed, were discarded from the hospital with diagnose of DHF 1246 patients under 12 years old. Of this patients, 106 presented neurological manifestations. Group classification: 10 with encephalitis, died 1 patient; 35 with encephalopathy (secondary to shock 19 and to hepatitis 16), in this group 7 patients died; 42 with seizures (39 febrile and 3 with previous diagnose of epilepsy) and 19 patients with other manifestations. Conclusions: 1) Patients during the acute phase of fever of the DHF presented altered sensorium and/or behavior, seizures and/or signs of focalization, the first diagnose possibility is encephalitis. 2) Patients during the defervescence period that presents persistent neurological manifestations characterized by seizures, sensorium and/or behavior alteration, associated to shock, hepatitis or acute renal failure, encephalopathy must be suspected. 3) Isolated seizures during the acute phase of fever of DHF, in most cases correspond to febrile seizures without neurologic compromise. 4) In patients with DHF, the transitory alterations of sensorium or behavior with fast resolution are explained by fever and metabolic syndrome. 5) In endoepidemic areas of dengue in patients with neurological manifestations and fever, this disease must be consider as a differential diagnose.


Assuntos
Dengue , Dengue Grave , Dengue Grave/complicações , Colômbia , Febre , Sinais e Sintomas
9.
Biomédica (Bogotá) ; 26(1): 61-70, mar. 2006. tab
Artigo em Espanhol | LILACS | ID: lil-434553

RESUMO

Introducción. Recientemente han venido aumentando los reportes de dengue hemorrágico con manifestaciones inusuales, principalmente neurológicas y hepáticas, que aumentan la morbimortalidad. Objetivo. Describir las manifestaciones inusuales del dengue hemorrágico en niños.Materiales y métodos. En el Departamento de Pediatría del Hospital Universitario de Santander en Bucaramanga, Colombia, de 913 pacientes con diagnóstico de dengue hemorrágico entre 1992 y 2004, se seleccionaron aquéllos que presentaron manifestaciones inusuales. Se clasificaron de acuerdo con los criterios de definición de caso, se agruparon según los órganos o sistemas principalmente comprometidos y se describieron los principales hallazgos clínicos, de laboratorio y relativos a la evolución. Resultados. Se encontraron 168 pacientes que presentaron manifestaciones inusuales, con predominio del sexo masculino, edad escolar y grados III y IV de dengue hemorrágico. Las manifestaciones más frecuentes fueron hepáticas, 53 (27 por ciento), y neurológicas, 49 (25 por ciento), además de renales, 14 (7 por ciento); cardíacas, 15 (8 por ciento); pulmonares, 18 (9 por ciento); colecistitis alitiásica, 18 (9 por ciento); síndrome hemofagocítico, 5 (2,5 por ciento); pancreatitis, 2 (1 por ciento), y 21 casos de abdomen agudo (11 por ciento). Fallecieron 10 pacientes. Conclusión. Se analizan los resultados y se comparan con otros de países endemoepidémicos de dengue; se discute el significado e importancia de las manifestaciones clínicas inusuales, su difícil diagnóstico, casi siempre en forma retrospectiva, y se destaca la frecuencia de las manifestaciones hepáticas y neurológicas que pueden aumentar la morbimortalidad, ante las cuales deben estar alertas los médicos que trabajan en zonas endémicas para reconocerlas.


Assuntos
Criança , Diagnóstico Clínico , Dengue Grave , Sinais e Sintomas , Dengue
10.
Biomédica (Bogotá) ; 23(2): 180-193, jun. 2003. tab, graf
Artigo em Espanhol | LILACS | ID: lil-356766

RESUMO

En Bucaramanga, Colombia, el dengue hemorrágico se presenta en forma endemoepidémica desde 1992. Con el objetivo de mostrar nuestras propias observaciones sobre las características clínicas, de laboratorio y evolución de la enfermedad realizamos este estudio durante un período de 10 años (febrero de 1992 a febrero de 2002), en niños menores de 13 años hospitalizados en el hospital universitario. Se incluyeron 763 pacientes, de los cuales 617 fueron clasificados como dengue hemorrágico de acuerdo con los criterios de la OMS (9,2 por ciento, grado I; 61,5 por ciento, grado II; 21,7 por ciento, grado III, y 7,5 por ciento, grado IV). No se pudieron clasificar 146 pacientes. La mayor incidencia se presentó en 1997, 1998 y 2001. Del total, 74,9 por ciento procedía del rea metropolitana de Bucaramanga; 48 por ciento eran del género masculino; 0,3 por ciento eran recién nacidos; lactantes, 11,8 por ciento; preescolares, 23,1 por ciento, y escolares, 64,9 por ciento. Las principales manifestaciones clínicas fueron: fiebre, 100 por ciento; manifestaciones hemorrágicas, 100 por ciento; vómito, 60 por ciento; dolor abdominal, 57 por ciento; cefalea, 50 por ciento; dolor osteomuscular, 40,8 por ciento; hepatomegalia, 33 por ciento, y exantemas, 29,4 por ciento. Entre las manifestaciones hemorrágicas, 56 por ciento correspondió a petequias; 35 por ciento a prueba de torniquete positiva; 34 por ciento a hemorragias digestivas, y 32 por ciento a epistaxis. Presentaron derrames serosos 17,7 por ciento. Entre los signos de alarma para choque se destacó el dolor abdominal intenso. En 52 por ciento de los pacientes se encontró leucopenia y linfocitos atípicos en 37,3 por ciento. Entre otras manifestaciones inusuales se presentaron hepatitis, encefalopatía, colecistitis acalculosa, insuficiencia renal aguda, síndrome hemofagocítico, infecciones sobreagregadas y enfermedades concomitantes. La evolución fue favorable en la mayoría de los pacientes. Fallecieron 12 pacientes (1,5 por ciento).


Assuntos
Criança , Dengue
11.
Med. UIS ; 8(1): 6-12, ene.-mar. 1994.
Artigo em Espanhol | LILACS | ID: lil-232150

RESUMO

El accidente por mordedura de serpientes venenosas es una emergencia que puede presentarse en las zonas tropicales de Colombia por la gran cantidad de especies existentes. Se hace una revisión de la clasificaión, actividad de sus venenos, fisiopatología y clínica de las serpientes venenosas conocidas en Colombia. Existen tres grande familias: Viperidae, Micruridae e Hidrophidae. En la primera familia hay tres géneros, Bothrops, Crotalus y Lachesis. El accidente más frecuente se produce por Bothrops. La familia Micruridae tiene 29 especies distribuídas por todo el territorio colonmbiabo, pero gracias a su poca agresividad no ocurren accidentes con frecuencia. Las serpientes marinas corresponden a la familia Hidrophidae y, solo se encuentran en aguas marinas del litoral pacífico. Se propone un protocolo de manejo orientado a la atención de niños afectados


Assuntos
Humanos , Criança , Mordeduras de Serpentes/classificação , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/tratamento farmacológico , Mordeduras de Serpentes/fisiopatologia , Mordeduras de Serpentes/reabilitação
12.
Rev. cienc. salud (Bogotá) ; 1(2): 190-192, jul.-dic. 2003.
Artigo em Espanhol | LILACS | ID: lil-440132
13.
Rev. colomb. reumatol ; 5(3): 143-7, sept. 1998. ilus
Artigo em Espanhol | LILACS | ID: lil-293716

RESUMO

Se presenta una serie de 10 pacientes con Dermatomiositis juvenil diagnosticados en el Hospital Universitario Ramón Gonzalez Valencia (HURGV) de Bucaramanga en el periódo de 13 años, estudio retrospectivo cuyo objeto es analizar las características clínicas, de laboratorio terapéutica y evolución. Los resultados mostraron predominio de mujeres (9 casos), procedentes de áreas rurales de Santander con una edad promedio de 8.8 años (rango de 6-12), con manifestaciones clínicas múltiples: lesión en piel, debilidad muscular, artralgia, fiebre, fotosensibilidad, disfagia, fenómeno de Raynaud y epistaxis. La velocidad de sedimentación globular (VSG), creatinkinasa (CK) estuvieron elevadas en todos los pacientes; la electromiografía mostró un patrón miopático. En la mayoría de pacientes hubo buenas respuestas a esteroides y evolución clínica satisfactoria. La elaboración detallada de la historia clínica con el examen físico minucioso y la elevación de enzimas musculares son de gran ayuda para el diagnóstico de esta enfermedad


Assuntos
Humanos , Adolescente , Dermatomiosite , Polimiosite , Dermatomiosite/classificação
14.
Trib. méd. (Bogotá) ; 99(5): 203-18, mayo 19991.
Artigo em Espanhol | LILACS | ID: lil-294158

RESUMO

Las manifestaciones clínicas del dengue son muy diversas y pueden aparecer en cualquiera de los sistemas u órganos; es también frecuente la asociación con otras enfermedades.


Assuntos
Humanos , Malária/fisiopatologia , Malária/tratamento farmacológico , Malária/reabilitação
15.
Colomb. med ; 11(3): 72-4, 1980. ilus
Artigo em Espanhol | LILACS | ID: lil-81630

RESUMO

El linfoma de Burkitt es una neoplasia maligna que se origina en los linfocitos B. Es endemico en Africa pero tambien se encuentra en otras partes del mundo con una incidencia mucho mas baja. Es mas frecuente en ninos de sexo masculino entre los 5 y los 9 anos y aparece preferencialmente en la mandibula y el abdomen siendo muy rara la forma primaria de huesos largos. Este articulo informa, enun nino de 4 anos, un tumor de Burkitt primario de femur, cuyas caracteristicas radiologicas sugerian un sarcoma de Ewing, sin evidencia de lesiones en ningun otro sitio. Al revisar la literatura se aprecia la rareza de su aparicion inicial en los huesos largos


Assuntos
Pré-Escolar , Humanos , Masculino , Neoplasias Ósseas/diagnóstico , Linfoma de Burkitt/diagnóstico , Neoplasias Ósseas , Neoplasias Ósseas/tratamento farmacológico , Neoplasias Ósseas/patologia , Linfoma de Burkitt , Linfoma de Burkitt/tratamento farmacológico , Linfoma de Burkitt/patologia
16.
Med. UIS ; 10(2): 76-84, abr.-jun. 1996. tab, graf
Artigo em Espanhol | LILACS | ID: lil-232067

RESUMO

Se presenta un estudio descriptivo de casos de Paresia Infantiles Agudas (PIA) en el Hospital Universitario Ramón González Valencia (HURGV) en la década de 1985-1994 en niños menores de 12 años. Se registraron 104 casos de PIA, con diagnóstico de egreso: 39 síndromes de Guillain Barré, 21 cerebelitis, 18 hemiplejías infantiles agudas, seis poliomielitis, cinco traumas raquimedulares, cinco tumores, cuatro miositis, tres transtornos psicosomáticos, dos mielitis transversa y una neuritis postinyección intramuscular; distribuidos en grupos etáreos de diez lactantes, 38preescolares, 56 escolares; con una distribución por sexo: Masculino 60, femenino 44. El promedio de estancia fue 24.7 días, la mayoría procedentes del área metropolitana de Bucaramanga. El líquido cefalorraquídeo ayudó al diagnóstico en los casos de Guillain Barré y polio, la mielotomografía en tumores compresivos medulares y la tomografía computarizada cerebral en hemipares infantil aguda y cerebelitis. La evolución final fue buena en la mayoría de los pacientes, se presentaron complicaciones en 18 pacientes y uno falleció con diagnóstico de Guillain Barré por broncoaspiración. El objetivo general del estudio fue determinar y analizar las causas de PIS en el HURGV de Bucaramanga en la última década, permitiendo conocer estadísticas propias de nuestra región acerca de las causas de PIA y a la vez elaborar un protocolo para el enfoque del diagnóstico diferencial precoz de estas patologías


Assuntos
Lactente , Pré-Escolar , Criança , Polirradiculoneuropatia/diagnóstico , Polirradiculoneuropatia/etiologia , Polirradiculoneuropatia/fisiopatologia , Polirradiculoneuropatia/reabilitação , Mielite Transversa/diagnóstico , Mielite Transversa/etiologia , Mielite Transversa/fisiopatologia , Mielite Transversa/reabilitação
17.
Pediatría (Bogotá) ; 31(2): 40-6, jun. 1996. tab
Artigo em Espanhol | LILACS | ID: lil-237737

RESUMO

Introducción: La hipertensión porta (HTP) en niños está asociada con importante morbilidad y mortalidad. Nosotros describimos la etiología, manifestaciones y evolución de 20 niños menores de 12 años con HTP y proponemos recomendaciones para su diagnóstico y manejo. Material y Métodos: Identificamos 20 niños hospitalizados en el servicio de pediatría del Hospital Universitario "Ramón González Valencia" en 12 años. Resultados: Doce eran niñas y la edad promedio fue de 6 años. Las causas fueron: obstrucción de vena porta (OVP) en siete, hepatitis crónica activa en cuatro, atresia de vías biliares en dos, enfermedad de Caroli, enfermedad venooclusiva y necrosis hepática severa en uno, respectivamente, e idiopática en cuatro. Dieciseis tenian hepatomegalia, esplenomegalia y desnutrición, diez hematemesis y catorce anemia y pruebas de funcionamiento hepático alteradas. Nueve presentaron várices esofágicas. Seis tenían cirrosis. El manejo médico incluyó transfusiones, antibióticos, vitaminas y diuréticos. Se realizaron cinco derivaciones selectivas, seis esplenectomías y una escleroterapia. Tres tenian hemorragia varicosa recurrente. Murieron cinco. Conclusión: La frecuencia de HTP fue baja, siendo la principal causa OVP y las presentaciones mas comunes hepatomegalia, esplenomegalia, desnutrición, hematemeses, anemia y pruebas de funcionamiento hepático alteradas. Nosotros recomendamos una historia clínica completa con pruebas de laboratorio específicas que orienten un diagnóstico e inicio de un manejo oportuno y adecuado


Assuntos
Humanos , Masculino , Feminino , Hipertensão Portal
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