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1.
J Med Econ ; 27(sup1): 1-11, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38468478

RESUMO

AIMS: Our cost-of-illness (COI) model adopted payer and societal perspectives over five years to measure the economic burden of Systemic Lupus Erythematosus (SLE) in Colombia. MATERIALS AND METHODS: A prevalence-based model was constructed to estimate costs and economic consequences for SLE patients in Colombia. The model included four health states: three phenotypes of SLE representing mild, moderate, and severe states and death. The clinical inputs were captured from the published literature and validated by the Delphi panel. Our model measured direct medical and indirect costs, including disease management, transient events, and indirect costs. One-way sensitivity analysis was also performed. RESULTS: The number of Colombian SLE patients was 37,498. The number of SLE patients with mild, moderate, and severe phenotypes was 5343, 28757 and 3,397, respectively. SLE-patients with moderate (Colombian pesos; COP 146 billion) and severe phenotypes (COP276 billion) incurred higher costs than those with mild phenotypes (COP2 billion), over 5 years. The total SLE cost in Colombia over five years from the payer and societal perspectives was estimated to be COP 915 billion and 8 trillion, respectively. The costs per patient per year from the payer and societal perspectives were COP 4,881,902 ($3,510) and COP 46,637,054 ($33,528), respectively. CONCLUSION: The burden of SLE in Colombia over five years is substantially high, mainly due to the consequences of economic loss because it affects women and men of working age, in addition to the costs of SLE management and its consequences, such as flares, infection, and organ damage. Our COI indicated that disease management costs among patients with moderate and severe SLE were substantially higher than those among patients with a mild phenotype. Therefore, more attention should be paid to limiting the progression of SLE and the occurrence of flares, with the need for further economic evaluation of novel treatment strategies that help in disease control.


Assuntos
Custos de Cuidados de Saúde , Lúpus Eritematoso Sistêmico , Masculino , Humanos , Feminino , Colômbia/epidemiologia , Estresse Financeiro , Efeitos Psicossociais da Doença
2.
ACS Omega ; 6(27): 17203-17216, 2021 Jul 13.
Artigo em Inglês | MEDLINE | ID: mdl-34278107

RESUMO

Studying the oxygen reduction reaction (ORR) in the alkaline electrolyte has proven to promote better catalytic responses and accessibility to commercialization. Ni-nanowires (NWs) were synthesized via the solvothermal method and modified with Pt using the spontaneous galvanic displacement method to obtain PtNi-NWs. Carbon Vulcan XC-72R (V) was used as the catalyst support, and they were doped with NH3 to obtain PtNi-NWs/V and PtNi-NWs/V-NH3. Their electrocatalytic response for the ORR was tested and PtNi-NWs/V provided the highest specific activity with logarithmic values of 0.707 and 1.01 (mA/cm2 Pt) at 0.90 and 0.85 V versus reversible hydrogen electrode (RHE), respectively. PtNi-NWs showed the highest half-wave potential (E 1/2 = 0.89 V) at 1600 rpm and 12 µgPt/cm2 in 0.1 M KOH at 25.00 ± 0.01 °C. Additionally, the catalysts followed a four-electron pathway according to the Koutecký-Levich analysis. Moreover, durability experiments demonstrated that the PtNi-NW/V performance loss was like that of commercial Pt/V along 10,000 cycles. Electrochemical ORR in situ X-ray absorption spectroscopy results showed that the Pt L3 edge white line in the PtNi-NW catalysts changed while the electrochemical potential was lowered to negatives values, from 1.0 to 0.3 V versus RHE. The Pt/O region in the in situ Fourier transforms remained the same as the potentials were applied, suggesting an alloy formation between Pt and Ni, and Pt/Pt contracted in the presence of Ni. These results provide a better understanding of PtNi-NWs in alkaline electrolytes, suggesting that they are active catalysts for ORR and can be tuned for fuel cell studies.

3.
Rev. colomb. reumatol ; 27(4): 262-268, oct.-dic. 2020. tab, graf
Artigo em Espanhol | LILACS | ID: biblio-1289330

RESUMO

RESUMEN Introducción: La percepción global de la salud (PGA) es una parte de los instrumentos compuestos utilizados para determinar la actividad de la artritis reumatoide (AR). Por lo general, se mide por medio de la escala visual análoga (EVA). En nuestra práctica clínica y en la literatura se han observado dificultades en la aplicación de la EVA. Este estudio se llevó a cabo luego de considerar la necesidad de definir el desempeño de las diferentes escalas usadas para evaluar la PGA, determinar la facilidad de su uso y proponer una nueva escala. Métodos: Se trata de un estudio basado en desenlace de pacientes con diagnóstico de AR a los que se aplicaron cuatro tipos de escalas para evaluar la PGA: escala 1 (EVA), escala 2 (escala de rostros) y una propuesta de escala visual en dos versiones: escala 3 (escala visual compuesta en orientación horizontal) y escala 4 (similar a la escala 3, pero en orientación vertical). Se analizó su correlación y la frecuencia con la que los pacientes las entendieron. Resultados: Se incluyeron 198 pacientes, 169 mujeres (85,3%) y 29 hombres (14,6%), y la edad media fue de 54,2 anos. El 59,6% de los pacientes no entendió la escala 1. La mayoría de los pacientes entendió las escalas 2, 3 y 4. Aproximadamente el 80% de los pacientes prefirió las escalas 2 (43,4%) y 3 (36,3%) (p < 0,00). Ninguna variable clínica predijo la selección de la escala. Se observó una buena correlación y una aceptable reproducibilidad de las escalas 2, 3 y 4. Conclusiones: La mayoría de los pacientes no entendió la EVA; la mayoría de nuestros pacientes entendió y prefirió las escalas propuestas, que podrían ser útiles en la práctica clínica de los pacientes con AR.


ABSTRACT Introduction: The overall perceived health (OPH) is part of the composite tools used to determine the activity of Rheumatoid Arthritis (RA). It is usually measured using a Visual Analogue Scale (VAS). Difficulties in applying the VAS have been observed in clinical practice and in the literature. This study was carried out after considering the need to define the performance of the different scales used to evaluate OPH, and determine their ease of use, as well as to propose a new scale. Methods: The study based on the outcome of patients, subjects diagnosed with RA, to whom 4 types of scales were applied to evaluate OPH: Scale 1 (VAS), Scale 2 (face scale), a proposal of a visual scale in two versions: Scale 3 (composite visual scale in horizontal orientation), and Scale 4, similar to 3 in vertical orientation. Results: Of the 198 patients included, 169 (85.3%) were women, and 29 (14.6%) were men. The mean age was 54.2 years, and 59.6% of the patients did not understand the Scale 1. The majority of the patients understood the Scales 2,3, and 4. Approximately 80% of the patients preferred the Scales 2 (43.4%) and 3 (36.3%) (P< .00), but no clinical variable predicted the selection of the scale. A good correlation and an acceptable reproducibility were observed for scales 2, 3, and 4. Conclusions: Although the majority of patients did not understand the VAS, the majority of our patients understood and preferred the proposed scales that could be useful in the clinical practice of RA patients.


Assuntos
Humanos , Percepção , Artrite Reumatoide , Pesos e Medidas , Medição da Dor , Saúde , Diagnóstico
4.
Rev. colomb. reumatol ; 27(supl.2): 152-157, oct.-dic. 2020. tab, graf
Artigo em Espanhol | LILACS | ID: biblio-1341349

RESUMO

RESUMEN La neumonía intersticial linfocítica es una complicación, poco frecuente, asociada con el lupus eritematoso sistémico, sin embargo, con gran impacto en la calidad de vida. Se asocia con la presencia de anti Ro/SSA, anti La/SSB y con el diagnóstico de síndrome de Sjögren secundario. No es clara la estrategia terapéutica y la información existente está basada en reportes de caso sin disponibilidad de estudios adecuadamente diseñados. En el presente documento se expone el caso de una paciente con lupus eritematoso sistémico y síndrome de Sjögren secundario, que presentó una enfermedad pulmonar intersticial con características de neumonía intersticial linfocítica.


ABSTRACT Lymphocytic interstitial pneumonia is an infrequent complication associated with systemic lupus erythematosus and has a great impact on quality of life. It is associated with the presence of anti-Ro/SSA, anti-La/SSB, and the diagnosis of secondary Sjögren Syndrome. Its therapeutic strategy is not clear, and the existing information is based on case reports, with there being no properly designed studies available. The case is presented here of a patient with systemic lupus erythematosus and secondary Sjögren's syndrome, who also presented with interstitial lung disease with characteristics of lymphocytic interstitial pneumonia.


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Síndrome de Sjogren , Doenças Pulmonares Intersticiais , Lúpus Eritematoso Sistêmico , Qualidade de Vida , Sinais e Sintomas , Diagnóstico
5.
Int J Dermatol ; 58 Suppl 1: 4-28, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31282026

RESUMO

This Clinical Practice Guideline on the systemic treatment of Psoriasis includes the recommendations elaborated by a panel of experts from the Latin American Psoriasis Society SOLAPSO, who assessed the quality of the available evidence using the GRADE system and the PICO process to guide the literature search. To answer each question, the experts discussed the results of randomized controlled trials, observational studies and metanalysis evaluating the interventions identified (non-biologics, biologics and phototherapy) in different populations of patients with moderate to severe plaque-psoriasis, which was summarized in Tables ad-hoc. The main end-points considered to assess efficacy were PASI 50, 75, 90 and 100, PGA 0-1 and significant improvement of health-related quality of life. Specific adverse events, either severe or leading to treatment interruption, were also evaluated. The 31 recommendations included in this CPG follow the structure proposed by GRADE: direction (for or against) and strength (strong or weak). The goal of this CPG is to improve the management of patients with psoriasis by recommending interventions of proved benefit and providing a reference standard for the treating physician. Adhering to the contents of this CPG does not guarantee therapeutic success. The final decision on the specific treatment is the responsibility of the physician based on the individual circumstances and considering the values, the preferences and the opinions of the patient or caregivers.


Assuntos
Produtos Biológicos/uso terapêutico , Fármacos Dermatológicos/uso terapêutico , Dermatologia/normas , Fototerapia/normas , Psoríase/terapia , Administração Oral , Dermatologia/métodos , Humanos , Injeções Subcutâneas , América Latina , Fototerapia/métodos , Psoríase/diagnóstico , Índice de Gravidade de Doença , Sociedades Médicas/normas
6.
Rev. colomb. reumatol ; 26(2): 118-128, ene.-jun. 2019. graf
Artigo em Espanhol | LILACS | ID: biblio-1115669

RESUMO

RESUMEN La proliferación del tejido sinovial, que es llamada pannus, se ha considerado como una manifestación tardía, inactiva e irreversible de la artritis reumatoide (AR), contrario a lo que históricamente se ha estudiado. Se realizó una búsqueda de la literatura para realizar una revisión narrativa e histórica respecto al surgimiento del término pannus y su papel en la artritis reumatoide. Estudios de microscopia de luz han mostrado el carácter destructivo de este tejido con hallazgos característicos de la AR, corroborados con microscopia electrónica arios más tarde. Estos hallazgos llevaron a caracterizar el componente celular del pannus con gran número de células inmunológicas y de líneas celulares específicas con propiedades especiales como los sinoviocitos similares a fibroblastos. Este componente celular es el origen de una gran cantidad de citoquinas y proteinasas que perpetúan y causan el daño óseo y del cartílago. Este componente inflamatorio ha sido evidente también con el desarrollo de técnicas de imágenes, como la resonancia magnética y la ultrasonografía, que muestran un papel activo del tejido sinovial engrosado, junto a la hipervascularización en el daño articular y la reversibilidad de estos cambios tras el tratamiento. Las evidencias contempladas permiten concluir que el pannus como evidencia histológica (más que clínica) se refiere a la proliferación del tejido sinovial e incluye un gran componente celular activo que genera y perpetúa la inflamación y, por tanto, la enfermedad.


ABSTRACT Pannus refers to synovial tissue proliferation, and has been considered a late, inactive and irreversible manifestation of rheumatoid arthritis (RA), contrary to historical findings. A literature search was performed on terminology about pannus and its historical role in the pathophysiology of RA. Light microscopy studies have shown the destructive impact of pannus tissue with very specific abnormalities, corroborated a year later with electronic microscopy. Some of these findings are the isolation of the immunological cells inside the tissue, especially one cell line with particular capacities, called synoviocytes similar to fibroblasts. This cellular component is the source a large quantity of cytokines and proteinases that perpetuate and cause bone and cartilage damage. Inflammation has been seen in many image techniques, such as magnetic resonance and ultrasound. These show the role of tissue widening and hyper-vascularization in tissue damage, and some reversibility after treatment of RA. With the evidence presented it is possible to conclude that pannus refers to a histological (more than clinical) term for synovial hypertrophy, and includes a large component of cell activity that generates and perpetuates inflammation and thus the disease.


Assuntos
Humanos , Artrite Reumatoide , Sinovite , Microscopia Eletrônica , Espectroscopia de Ressonância Magnética , Ultrassonografia
7.
Rev. colomb. reumatol ; 26(1): 63-67, Jan.-Mar. 2019. graf
Artigo em Inglês | LILACS | ID: biblio-1098967

RESUMO

ABSTRACT Polyarteritis nodosa is part of the primary systemic vasculitis that specifically compromises vessels of medium caliber, and can affect virtually any organ. The diagnosis of this disease is based on clinical criteria, such as pain and weakness in the lower limbs, as well as laboratory results and the histology report that shows necrotizing, segmental and focal inflammation of the vessels involved. The case is presented of a 42 year-old woman with a previous diagnosis of polyarteritis nodosa, who, 12 years later, presented with an episode of activation of the disease associated with venous thrombosis and multifocal myopathy in the lower limbs. This is a rare presentation that should be suspected in this type of patients.


RESUMEN La poliarteritis nodosa hace parte de las vasculitis sistémicas primarias, específicamente compromete vasos de mediano calibre pudiendo afectar virtualmente a cualquier órgano. El diagnóstico de esta enfermedad se basa en criterios clínicos, como el dolor y la debilidad en los miembros inferiores, además de reportes paraclínicos y el compromiso histológico, que evidencia inflamación necrosante, segmentaria y focal de los vasos involucrados. A continuación, presentamos el caso clínico de una mujer de 42 arios, con diagnóstico previo de poliarteritis nodosa, que presenta, 12 años después, un episodio de activación de la enfermedad asociado a trombosis venosa y miopatía multifocal en miembros inferiores, una presentación poco frecuente pero que debe sospecharse en este tipo de pacientes.


Assuntos
Humanos , Feminino , Adulto , Poliarterite Nodosa , Vasculite , Espectroscopia de Ressonância Magnética , Diagnóstico , Histologia , Doenças Musculares , Miosite
8.
Rev. colomb. reumatol ; 25(2): 136-140, abr.-jun. 2018. tab, graf
Artigo em Espanhol | LILACS | ID: biblio-990939

RESUMO

RESUMEN El lupus eritematoso sistémico se puede presentar con un amplio espectro de síntomas que en algunas ocasiones pueden enmascarar complicaciones graves asociadas a la misma enfermedad. Dentro de estas la pancreatitis es una causa poco común, y sin embargo de alta mortalidad, especialmente en pacientes con un tratamiento no oportuno. Reportamos el caso de una paciente que cursa con lupus eritematoso sistémico con compromiso renal y de sistema nervioso central, de reciente aparición, que se asocia a la aparición de pancreatitis y tiroiditis, presentando evolución satisfactoria con esquema terapéutico de ciclofosfamida y prednisolona.


ABSTRACT Systemic lupus erythematosus can present with a broad spectrum of symptoms that on some occasions may mask serious complications associated with the same disease. Within these, pancreatitis is an uncommon but high-mortality cause, especially in patients with non-oportune treatment. We report the case of a patient with systemic lupus eryt-hematosus with recent renal and central nervous system involvement that is associated with the onset of pancreatitis and thyroiditis. A satisfactory outcome was obtained with a cyclophosphamide and prednisolone therapeutic regimen.


Assuntos
Humanos , Feminino , Adolescente , Pancreatite , Tireoidite , Nefrite Lúpica , Prednisolona , Ciclofosfamida
9.
Rev. colomb. reumatol ; 22(2): 90-103, jun. 2015. graf, tab
Artigo em Espanhol | LILACS | ID: lil-770780

RESUMO

Utilizar modelos de inteligencia computacional para la clasificación e identificaciónde endofenotipos (relación entre fenotipo y marcadores genéticos) en pacientes con artritisreumatoide y controles sanos, a partir de información genética, principalmente el HLA DRB1(antígeno leucocitario humano) y la teoría del epítope compartido.Métodos: Desarrollamos modelos computacionales para clasificación, utilizando técnicasde inteligencia computacional como son las redes neuronales, redes bayesianas y métodoscomo k-means. Como datos de entrada se utilizaron variables como: factor reumatoide,anticuerpos contra péptido citrulinado, proteína C reactiva, número de articulaciones inflamadasy dolorosas, rigidez matinal, edad, género, antecedentes de comorbilidades y lainformación del alelo HLA DRB1.Resultados: Se obtuvieron resultados importantes para el diagnóstico de la enfermedad,así como también para su categorización y como potencial aplicación en la medicinapersonalizada de los individuos afectados por esta enfermedad. Conclusión: Los métodos utilizados permiten una mejor estratificación de la enfermedad enrelación con la predicción de fenotipos y posibles desenlaces de la enfermedad, así comopara la potencial prevención primaria de la enfermedad...


Assuntos
Humanos , Artrite Reumatoide , Inteligência , Reumatologia
10.
Springerplus ; 4: 172, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25977887

RESUMO

INTRODUCTION: Adult-onset Still's disease is a rare systemic inflammatory disorder of unknown aetiology characterized by the classic triad of persistent high spiking fevers, joint pain and a distinctive salmon-colored bumpy rash however, the multiorgan involvement can be present. CASE DESCRIPTION: A 40-year-old woman previously healthy was referred to our hospital with 7 days of high fever and generalized arthralgia, The physical exam revealed angioneurotic edema detected on soles, palms and tongue and widespread red, urticated plaques in a symmetrical distribution affecting the arms, dorsal hands, upper and lower chest and back. Followed 5 days later by fever, the patient presented dyspnea, cough and hypoxemia, the imaging studies showed unilateral consolidation and pleural effusion. The bronchoscopy with bronchoalveolar lavage and skin biopsy were consistent with neutrophilic urticarial. The hematological disorders, infections and other autoimmune diseases were excluded. DISCUSSION AND EVALUATION: The diagnosis of adult-onset Still's disease can be very difficult. There are no specific tests and reliance is usually placed on a symptom complex and the well described typical rash seen in most patients. In recent years, however, other cutaneous manifestations of Adult-onset Still's disease have been reported but these are not so well known. CONCLUSIONS: The evidence of rare manifestations is growing and the early clinical presentation of Adult-onset Still's is extremely variable, making diagnosis difficult. For this reason, data on early clinical presentation of the disease are of interest. We reported the first case of acute Adult-onset Still's disease with the association of pulmonary hemorrhage, urticaria and angioedema including a rare systemic manifestation as leukemoid reaction.

11.
Bogotá; IETS; oct. 2014.
Não convencional em Espanhol | LILACS, BRISA/RedTESA | ID: biblio-875826

RESUMO

INTRODUCCIÓN: La enfermedad de Behcet (EB) es una vasculitis sistémica de etiología desconocida, caracterizada por ulceraciones orales y genitales recurrentes asociadas y compromiso ocular. En la actualidad, el diagnóstico se realiza por medio de grupos de criterios diagnósticos. Aunque existe una asociación entre HLA-B51 y EB, no se ha considerado aún el uso de los HLA como prueba diagnóstica. OBJETIVO: Evaluar si existe un papel para los antígenos leucocitarios humanos, en particular los denominados HLA 15, 108, 105, 109 y 119, en el diagnóstico de pacientes con EB. MÉTODOS: Se realizó una búsqueda de revisiones sistemáticas de estudios de validez diagnóstica publicadas en los últimos cinco años en Cochrane Database of Systematic Reviews, DARE y MEDLINE, así como una búsqueda de estudios primarios sobre validez diagnóstica en MEDLINE (1966 a la fecha), EMBASE (1982 a la fecha), LILACS (1982 a la fecha), de referencias entre los estudios encontrados y consulta a expertos temáticos, productores y comercializadores de la tecnología; la tecnología de interés fue el uso de HLA para el diagnóstico de EB; como estándar de referencia se consideraron diferentes criterios clínicos (International Study Group (ISG), International Criteria For Behcet Disease (ICBD), entre otros). Dos evaluadores de manera independiente, tamizaron las referencias obtenidas, resolviendo las discrepancias por medio de un tercer autor. RESULTADOS: No es posible establecer conclusiones acerca del papel de los antígenos leucocitarios humanos en el diagnóstico de EB dado que, hasta la fecha, no se han publicado estudios sobre sus características operativas. En Colombia se requieren estimaciones de la frecuencia de alelos HLA y su asociación con EB que puedan sugerir su posible valor diagnóstico.(AU)


Assuntos
Humanos , Síndrome de Behçet/diagnóstico , Vasculite Sistêmica/etiologia , Antígenos HLA/análise , Análise Custo-Benefício , Colômbia
12.
Rev. colomb. reumatol ; 20(3): 128-140, jul.-set. 2013. ilus, tab
Artigo em Espanhol | LILACS | ID: lil-696634

RESUMO

Resumen Para el desarrollo de políticas sanitarias y económicas en el sector salud, es necesario que la toma de decisiones esté basada en la evidencia. El desarrollo de nuevas tecnologías para el cuidado de la salud se ha incrementado en las últimas décadas permitiendo la aparición, cada vez más rápida, de múltiples alternativas farmacológicas para el manejo de una misma patología; dada la cantidad de intervenciones se hace indispensable comparar las relevantes, en especial, mediante la realización de ensayos clínicos controlados, con el fin de evaluar y determinar la mejor alternativa en términos de beneficios, menores efectos adversos y costos. Sin embargo, debido a la ausencia de este tipo de estudios dado su alto costo, las comparaciones indirectas de tratamientos como las redes de meta-análisis y las comparaciones mixtas de tratamientos, son una herramienta útil para la selección de la mejor opción. Esta revisión, proporciona una orientación sobre la interpretación de las comparaciones indirectas, los métodos, supuestos, validez, métodos de análisis, beneficios y limitaciones, con el fin de proporcionar herramientas suficientes para la adecuada toma de decisiones en salud.


Abstract For the development of health and economic policies in the health system, it is necessary for decision making is based on evidence. The development of new technologies for health care has increased in recent decades, allowing the appearance, fastest growing, multi-drug alternatives for handling the same pathology, given the number of interventions is essential to compare all relevant specially through controlled clinical trials, to evaluate and determine the best alternative in terms of benefits, fewer side effects and costs. However, due to the absence of this type of study due to its high cost, indirect comparisons of treatments such as networks of meta-analysis and mixed treatment comparisons provide a useful tool for selecting the best treatment option. This review provides guidance on the interpretation of indirect comparisons, methods, assumptions, validity, analysis methods, benefits and limitations in order to provide sufficient tools for proper decision-making in health.


Assuntos
Humanos , Reumatologia , Colômbia
13.
Rev. colomb. reumatol ; 20(3): 155-170, jul.-set. 2013. ilus, tab
Artigo em Espanhol | LILACS | ID: lil-696635

RESUMO

Resumen La esclerosis sistémica (escleroderma) es una enfermedad autoinmune del tejido conectivo cuya causa no ha sido definida, con gran morbilidad y mortalidad, dadas sus múltiples complicaciones tanto cutáneas como sistémicas. A pesar de ser reconocida desde hace siglos, aún no se cuenta con intervenciones óptimas para controlar definitivamente su progresión y evitar la aparición de lesiones en órganos diferentes a la piel. Teniendo como características clínicas sobresalientes el fenómeno de Raynaud y los cambios fibróticos cutáneos, el objetivo de esta investigación histórica es presentar las descripciones clínicas y patológicas históricas, mostrando la evolución en el enfoque y manejo de estos pacientes, desde siglos atrás hasta la actualidad. Objetivos: Hacer una aproximación a las primeras descripciones históricas de los aspectos clínicos relacionados con las manifestaciones cutáneas y de anexos de la esclerosis sistémica progresiva, resaltando a los individuos que por siglos han aportado al entendimiento de la enfermedad. Materiales y métodos: Investigación de corte histórico, con revisión de la literatura desde el siglo xvii hasta el año 2013, en especial, de textos que impactan en el entendimiento de la evolución clínica de los aspectos cutáneos de la enfermedad. Se realiza una búsqueda sistémica de la información disponible en medios virtuales y físicos, en bibliotecas de América y Europa, teniendo acceso a textos originales en diferentes idiomas y realizando la traducción de los mismos, con miras a enmarcar los resultados de las descripciones en una línea de tiempo.


Abstract Systemic sclerosis (scleroderma) is a connective tissue autoimmune disease with an unknown etiology, with a wide range of skin and cutaneous complications wich explains the morbility and mortality of this entity. Recognized since centuries, there are not optimal interventions yet to control its progression and avoid lesions in different organs besides skin. The most characteristic clinical pictures are Raynaud phenomenon and cutaneous fibrosis, this is why the first objective of this historical investigation is to present the clinical and pathological historical descriptions of these disease, showing the evolution in the approach and management of patients with this malady in an historical view. Objectives: To make an approximation to the first historical descriptions of the clinical aspects related with de cutaneous commitment in patients with progressive systemic sclerosis, highlighting some persons who have made seminal contributions to the understanding of this disease. Material and methods: Historical investigation with an extensive literature review from century xvii to xxi, we include electronic and physical information from different libraries from America and Europe. We describe all the information in a time line.


Assuntos
Humanos , Calcinose , Doença de Raynaud , Escleroderma Sistêmico
15.
Clin Exp Rheumatol ; 31(1): 40-6, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-22935200

RESUMO

OBJECTIVES: Elderly-onset rheumatoid arthritis (EORA) is considered to have different features in relation to young-onset rheumatoid arthritis (YORA). However, results from different evaluated populations worldwide have been inconsistent and in Colombia there are no known descriptions of the differences between these pathologies. The aim of this paper is to compare the clinical, laboratory and immunogenetic features in a Colombian population suffering with EORA and YORA. METHODS: EORA (≥65, n=104) and YORA (<65, n=96) patients were compared regarding clinical, laboratory and HLA-DRB1 alleles features. A control group without rheumatoid arthritis over 65 (n=179) was used to compare the HLA-DRB1 alleles. All patients met the ACR/1987 criteria for rheumatoid arthritis and the clinimetric index was calculated. RESULTS: The gender ratio (female/male) was 1.8:1 in EORA. In both groups, the main onset pattern of disease was an insidious polyarticular onset (p=0.35). EORA was characterised by more distal-proximal joint involvement in comparison to YORA (p=0.0007). In EORA, the rheumatoid factor and anti-cyclic citrullinated peptide (anti-CCP) antibodies frequency was close to 50%, lower than in YORA (63%). In both groups, the DAS28 and HAQ-DI score was higher than 6 and 1, respectively. The HLA-DRB1*0403 and *1402 frequency was significantly higher in EORA than in YORA. Also, the shared epitope (p=0.0392), HLA-DRB1*01 (p=0.0068) and *0101 (p=0.0151) were associated with an anti-CCP positivity and the HLA-DRB1*0403 is protective for the anti-CCP presence in EORA (p=0.0201). CONCLUSIONS: EORA is characterised by a different clinical presentation and HLA-DRB1 alleles with respect to YORA. HLA-DRB1*0403 and *1402 are significantly more frequent in EORA compared to YORA.


Assuntos
Artrite Reumatoide/epidemiologia , Artrite Reumatoide/genética , Cadeias HLA-DRB1/genética , Adulto , Idade de Início , Idoso , Análise de Variância , Artrite Reumatoide/diagnóstico , Artrite Reumatoide/imunologia , Biomarcadores/sangue , Estudos de Casos e Controles , Distribuição de Qui-Quadrado , Colômbia/epidemiologia , Estudos Transversais , Avaliação da Deficiência , Feminino , Frequência do Gene , Humanos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Peptídeos Cíclicos/imunologia , Prevalência , Fator Reumatoide/sangue , Fatores de Risco , Índice de Gravidade de Doença
16.
Clin Exp Rheumatol ; 30(4): 520-4, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22704547

RESUMO

OBJECTIVES: C1858T single nucleotide polymorphism in PTPN22 encoding the R620W allele variant of Lyp-PTPN22 (a protein phosphatase negatively regulating T-cell activation) has been associated with autoimmunity. This work has investigated the possible association between PTPN22 C1858T (rs2476601) polymorphism and rheumatoid arthritis (RA), systemic lupus erythematosus (SLE) and systemic sclerosis (SSc) in a Colombian population. METHODS: A case-control study included 1,042 samples from 413 RA, 94 SLE and 101 SSc patients and 434 healthy controls. The TaqMan allele discrimination assay was used for genotyping. RESULTS: The case-control study provided robust evidence of association between allele 1858T and RA (p=5E-05), as well as between 1858T and SLE (p=0.004). These observations were confirmed for both diseases by meta-analysis (p=2E-04, pooled OR 1.9; 1.3-2.7 95% CI for RA; p<0.0001, pooled OR 2.8, 1.8-4.5 95% CI for SLE). No significant association was observed between 1858T and SSc (p=0.98, OR 1.11, 0.46-2.65 95% CI). CONCLUSIONS: The study suggested that the PTPN22 1858T variant influences RA and SLE genetic background but not that of SSc in the Colombian population.


Assuntos
Artrite Reumatoide/genética , Predisposição Genética para Doença/genética , Lúpus Eritematoso Sistêmico/genética , Proteína Tirosina Fosfatase não Receptora Tipo 22/genética , Escleroderma Sistêmico/genética , Adulto , Artrite Reumatoide/epidemiologia , Estudos de Casos e Controles , Colômbia/epidemiologia , Feminino , Frequência do Gene , Predisposição Genética para Doença/epidemiologia , Variação Genética/genética , Genótipo , Humanos , Lúpus Eritematoso Sistêmico/epidemiologia , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único/genética , Fatores de Risco , Escleroderma Sistêmico/epidemiologia
17.
Rev. colomb. reumatol ; 18(3): 234-246, jul.-sep. 2011. ilus, tab
Artigo em Espanhol | LILACS | ID: lil-636867

RESUMO

Las enfermedades osteocondensantes son un grupo de patologías poco frecuentes que se caracterizan por aumento de la masa ósea, comprometiendo tanto a huesos largos como a huesos planos. Tradicionalmente, la radiología simple ha permitido su diagnóstico al identificar patrones de afectación ósea característicos de cada enfermedad. Actualmente, la caracterización molecular y genética ha facilitado la comprensión del sustrato fisiopatológico y la expresión fenotípica de estás patologías, sin embargo, la radiología simple continua teniendo un valor inconmesurable en el reconocimiento de las enfermedades osteocondensantes.


Sclerosing bone disorders are a rare group of diseases characterized by increased bone mass in both long and flat bones. Traditionally, plain radiography has allowed the diagnosis of these diseases identifying characteristic patterns of bone involvement. At present, the molecular and genetic characterization of these diseases has provided a better understand of their pathophysiology and phenotypic expression, however plain radiography continues to have an important role in the recognition of sclerosing bone disorders.


Assuntos
Humanos , Feminino , Adulto , Osso e Ossos , Radiologia , Diagnóstico , Patologia Molecular , Genes
18.
Rev. colomb. reumatol ; 18(2): 96-108, abr.-jun. 2011. ilus, tab
Artigo em Espanhol | LILACS | ID: lil-636854

RESUMO

El test de respiración única ha probado por si mismo ser una parte esencial del tamizaje de rutina de la función pulmonar, y de igual valor que la espirometría. A pesar de 100 años de investigación, aún no existe certeza sobre la relativa importancia de las membranas alveolo-capilares vs los eritrocitos como los pasos que sean delimitantes en el transporte global del monóxido de carbono del gas hacia la sangre, pero esto es solo un problema cuantitativo. La naturaleza esencial del test de DLCO ya ha sido elucidada, siendo F.J.W. Roughton y R.E. Forster los mayores protagonistas en esta descripción. La interpretación de la DLCO, en conjunto con la espirometría y los volúmenes pulmonares, pueden contribuir en la evaluación de enfermedades pulmonares subyacentes y, en el campo reumatológico es esencial su conocimiento puesto que ofrece la posibilidad de establecer un diagnóstico diferencial y un seguimiento cercano de los pacientes con enfermedades autoinmunes con manifestaciones pulmonares. El test de espiración única para la capacidad de difusión de monóxido de carbono, la espirometría y los gases arteriales son los test de función pulmonar más ampliamente utilizados para la evaluación y tratamiento de pacientes.


The single breath DLCO (TLCO) has proved as an essential part of the routine pulmonary function screen, similar to spirometry. In spite of nearly 100 years research, there is still concern over the relative importance of the alveolarcapillary membranes versus the red cells as rate limiting steps in the overall transfer of carbon monoxide from gas to blood, but this is only a quantitative problem. The essential nature of the DLCO has already been elucidated by F.J.W. Roughton and R.E. Forster having played the major roles. Interpreting the DLCO, in conjunction with spirometry and lung volumes assessment, may assist in diagnosing the underlying disease and in the Rheumatology field it is essential it's knowledge because it offers the possibility of establish the differential diagnosis and a close follow-up of the patients with pulmonary manifestations in autoimmune diseases.


Assuntos
Humanos , Testes de Função Respiratória , Doenças Autoimunes , Monóxido de Carbono , Alvéolos Pulmonares , Espirometria , Capilares , Conhecimento , Diagnóstico Diferencial , Pneumopatias , Membranas
19.
Acta méd. colomb ; 36(1): 24-29, ene.-mar. 2011. ilus, tab
Artigo em Espanhol | LILACS | ID: lil-635326

RESUMO

Introducción: la artritis reumatoide (AR) es una enfermedad crónica de alto costo para el sistema de salud, en particular cuando se requiere terapia biológica. Objetivos: diseñar un modelo económico para la toma de decisiones entre adalimumab (ADA), etanercept (ETA) e infliximab (INF) en el contexto colombiano. Metodología: se diseñó un modelo de Markov, con un horizonte temporal de dos años, una perspectiva de un tercero pagador, que midiera efectividad clínica (en proporción de pacientes con respuesta ACR50 o mayor), abandono de terapia, eventos adversos, calidad de vida en AVAC (años de vida ajustados por calidad) y costos directos de tratamiento en pesos colombianos. Resultados: la suspensión de la terapia fue mayor para INF y menor para ETA. La ganancia en AVAC fue ligeramente más alta para ETA y para ADA que para INF. Los costos anuales promedio de la terapia con INF fueron $44.8 millones, para ADA $41.0 millones, y $39.0 millones para ETA. El costo promedio por mes logrado en ACR50 o superior fue de $9.37; $8.83 y $13.5 millones, respectivamente, para ADA, ETA e INF. Conclusiones: dadas las limitaciones y los supuestos del modelo, se podría concluir que, en el paciente colombiano "caso tipo" con AR, ETA es dominante sobre ADA e INF al tener un costo global total menor, y una efectividad superior a INF y por lo menos igual a la de ADA (Acta Med Colomb 2011; 36: 24-29).


Introduction: rheumatoid arthritis (RA) is a chronic illness that implies high direct and indirect costs for the health system, in particular when biological therapy is prescribed. Objectives: the aim of this study was to design an economic model for decision-making between adalimumab (ADA), etanercept (ETA) and infliximab (INF) in the Colombian context. Methods: we designed a Markov model with a time horizon of two years and a third party payer perspective, measuring the effectiveness (as proportion of patients with ACR50 response or better) discontinuation of therapy, adverse events, quality of life in QALY (quality adjusted life years) and direct cost represented in Colombian pesos (1 US$ = Col$1800 pesos, aprox). Results: discontinuation of therapy was highest for INF, and lowest for ETA. The gain in QALYs was somewhat higher for ETA and ADA, compared with INF. The total annual costs of the therapy with INF was $44.8 million, $41.0 million for ADA, and $39.0 for ETA. The cost per month with ACR50 or higher was $9.37; $8.83 and $13.5 million, respectively for ADA, ETA and INF. Conclusion: given the limitations and given the assumptions of this model, we conclude that in the average Colombian patient with AR, ETA is dominant over ADA and INF, by having a lower total cost and at least the same effectiveness as ADA and higher than INF (Acta Med Colomb 2011; 36: 24-29).

20.
Rev. colomb. reumatol ; 18(1): 55-67, ene.-mar. 2011. ilus, graf
Artigo em Espanhol | LILACS | ID: lil-636850

RESUMO

El test de respiración única para la capacidad de difusión de monóxido de carbono (DLCO) tiene una larga historia desde su nacimiento por Krogh y Krogh en 1909 hasta la primera publicación, describiendo una técnica estandarizada para la medición de la capacidad de difusión (DLCO) por Ogilvie en 1957. El test de DLCO fue inicialmente ideado como una herramienta fisiológica para evaluar el concepto (ahora abandonado) de que el pulmón, al igual que la vejiga natatoria de algún pez marino de agua profunda, podía secretar oxígeno en contra del gradiente normal de tensión provisto por el aire inspirado. El test de DLCO fue introducido como una prueba clínica por Marie Krogh en 1915, pero la medida nunca engranó debido a que los métodos de medición del monóxido de carbono eran muy engorrosos. En los años cincuenta con la introducción del medidor infrarrojo de monóxido de carbono (CO) (desarrollado en Alemania en la Segunda Guerra Mundial), el interés en el test de DLCO revivió y varios métodos para realizar el test de DLCO en pacientes con enfermedades pulmonares se aplicaron, usándose étodos en estado estable, la respiración única y las técnicas de reinhalación.


The single breath test of carbon monoxide (CO) uptake has a long history /from its birth by Krogh and Krogh in 1909 to the first publication describing a standardized technique for the diffusing capacity measurement (DLCO) by Ogilvie in 1957. The DLCO was devised originally as a physiological tool to test the notion (now abandoned) that the lung, like the swim bladder of some deep-sea fish, could secrete oxygen against the normal tension gradient provided by inspired air. The DLCO was introduced as a clinical test by Marie Krogh in 1915, but the measurement never caught on because methods of measuring carbon monoxide were so cumbersome. In the 1950s, with the introduction of the infra-red CO meter (developed in Germany, in World War II) interest in the DLCO revived, and several different methods for measuring DLCO in patients with pulmonary diseases were in use various steady state methods, the single breath and rebreathing techniques.


Assuntos
Humanos , Doenças Autoimunes , Monóxido de Carbono , Respiração , Testes de Função Respiratória , Métodos , Ar , Difusão , História , Pneumopatias
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