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1.
Rev. salud pública ; 19(3): 382-385, mayo-jun. 2017. tab
Article in Spanish | LILACS | ID: biblio-903120

ABSTRACT

RESUMEN En este documento se presenta una actualización referente al efecto carcinógeno del formol; inicialmente se consideran generalidades de su composición química, luego se evidencian algunos de sus usos, tanto en la industria como en las instituciones de salud, y posteriormente se muestra el riesgo al que está expuesta la población general y en particular el personal del área de la salud, como consecuencia de una exposición prolongada ante este componente químico. Se hace hincapié en la concentración del formaldehido tanto en la vida cotidiana como en el ámbito laboral y se consideran los lineamientos del decreto 1477 del 5 de agosto de 2014, emanado por el Ministerio del Trabajo de la República de Colombia, sobre la exposición ocupacional a esta sustancia química resaltando que este decreto no hace mención a los ya conocidos efectos car-cinogénicos del formol, ampliamente soportados por la evidencia científica, dejando un vacío tanto para la prevención ocupacional como para la legislación laboral.(AU)


ABSTRACT This paper presents an update on the carcinogenic effect of formaldehyde. First, generalities of its chemical composition are considered, followed by the description of some of its uses, both in the industry and in health institutions, as well as an account of the risk to which the general population is exposed, in particular health personnel, as a result of prolonged exposure to this chemical component. Emphasis is placed on the concentration of formaldehyde in everyday life and in the workplace, while the guidelines of decree 1477 of August 5, 2014, issued by the Ministry of Labor of Colombia, on occupational exposure to this chemical are analyzed to demonstrate that this decree does not consider the already known carcinogenic effects of formaldehyde, widely supported by scientific evidence, thus leaving a void for both occupational prevention and labor legislation.(AU)


Subject(s)
Humans , Leukemia, Myeloid/etiology , Occupational Exposure/adverse effects , Legislative Decree , Formaldehyde/adverse effects , Colombia
3.
Braz. j. med. biol. res ; 40(6): 749-760, June 2007. tab
Article in English | LILACS | ID: lil-452685

ABSTRACT

Acute leukemia in early childhood is biologically and clinically distinct. The particular characteristics of this malignancy diagnosed during the first months of life have provided remarkable insights into the etiology of the disease. The pro-B, CD10 negative immunophenotype is typically found in infant acute leukemia, and the most common genetic alterations are the rearrangements of the MLL gene. In addition, the TEL/AML1 fusion gene is most frequently found in children older than 24 months. A molecular study on a Brazilian cohort (age range 0-23 months) has detected TEL/AML1+ve (N = 9), E2A/PBX1+ve (N = 4), PML/RARA+ve (N = 4), and AML1/ETO+ve (N = 2) cases. Undoubtedly, the great majority of genetic events occurring in these patients arise prenatally. The environmental exposure to damaging agents that give rise to genetic changes prenatally may be accurately determined in infants since the window of exposure is limited and known. Several studies have shown maternal exposures that may give rise to leukemogenic changes. The Brazilian Collaborative Study Group of Infant Acute Leukemia has found that mothers exposed to dipyrone, pesticides and hormones had an increased chance to give birth to babies with infant acute leukemia [OR = 1.48 (95 percentCI = 1.05-2.07), OR = 2.27 (95 percentCI = 1.56-3.31) and OR = 9.08 (95 percentCI = 2.95-27.96)], respectively. This review aims to summarize recent clues that have facilitated the elucidation of the biology of early childhood leukemias, with emphasis on infant acute leukemia in the Brazilian population.


Subject(s)
Female , Humans , Infant , Infant, Newborn , Pregnancy , Gene Expression Regulation, Neoplastic , Leukemia, Myeloid/genetics , Myeloid-Lymphoid Leukemia Protein/genetics , Prenatal Exposure Delayed Effects , Precursor Cell Lymphoblastic Leukemia-Lymphoma/genetics , Leukemia, Myeloid/epidemiology , Leukemia, Myeloid/etiology , Precursor Cell Lymphoblastic Leukemia-Lymphoma/epidemiology , Precursor Cell Lymphoblastic Leukemia-Lymphoma/etiology
4.
Bol. Acad. Nac. Med. B.Aires ; 82(2): 273-284, jul.-dic. 2004. tab, graf
Article in Spanish | LILACS | ID: lil-435050

ABSTRACT

Los síndromes mielodisplásicos (SMD) comprenden un grupo heterogéneo de desordenes hematólogicos con riesgo de evolución a leucemia mieloide aguda (LMA). El Grupo Franco-Americano-Británico (FAB) los clasifica en cinco entidades morfológicas y el Sistema Pronóstico Internacional (IPSS) propone cuatro grupos de riesgo basándose en variables clínicas y citogenéticas. El objetivo del trabajo fue evaluar la aplicación del IPSS en población Argentina, analizar el valor pronóstico de sus variables y determinar si dicho sistema permite identificar subgrupos pronósticos de riesgo dentro de los subtipos FAB. Se evaluaron 234 pacientes con SMD de novo (Media de seguimiento: 28 meses), con el fin de determinar sobrevida (SV) y sobrevida libre de LMA (SLL). Se analizaron la clasificación FAB y el IPSS, así como sus variables (número de citopenias, porcentaje de blastos, grupos de riesgo citogenético). Los resultados mostraron diferencias significativas para SV y SLL. La aplicación del IPSS permitió la diferenciación de los cuatro grupos de riesgo y ayudó a identificar subclases pronósticas dentro de los subtipos FAB: 5 , 15 y 19 por ciento de pacientes con peor pronóstico dentro de los subtipos Anemia Refractaria (AR), AR con sideroblastos en anillo (ARSA) y AR con exceso de blastos (AREB), respectivamente. El IPSS no fue informativo para el subtipo AREB en transformación, ni tampoco en pacientes con leucemia mielomonocítica crónica.


Subject(s)
Humans , Male , Adolescent , Adult , Middle Aged , Female , Leukemia, Myeloid/epidemiology , Leukemia, Myeloid/etiology , Preleukemia/epidemiology , Myelodysplastic Syndromes/classification , Myelodysplastic Syndromes/epidemiology , Myelodysplastic Syndromes/genetics , Argentina/epidemiology , Blood Cell Count , Bone Marrow Examination , Cell Lineage , Chromosome Aberrations , Life Tables , Disease Progression , Risk Factors , Severity of Illness Index , Survival Analysis
5.
São Paulo med. j ; 122(6): 273-275, Nov. 4, 2004. graf
Article in English | LILACS | ID: lil-393198

ABSTRACT

CONTEXTO: O prognóstico da anemia aplástica grave melhorou com o advento do transplante de medula óssea e do tratamento imunossupressor com globulina antitimocitária. Em contraste com o sucesso destes protocolos, os estudos com seguimento a longo prazo mostraram a ocorrência de doenças clonais, tais como: hemoglobinúria paroxística noturna, síndrome mielodisplásica e leucemia aguda. RELATO DE CASO: Nós relatamos o primeiro caso descrito no Brasil de um paciente com anemia aplástica que evoluiu para síndrome mielodisplásica e leucemia mielóide aguda associada a presença de hemoglobina H e aumento da hemoglobina fetal.


Subject(s)
Humans , Male , Adult , Anemia, Aplastic/complications , Hemoglobin H , Leukemia, Myeloid/etiology , Acute Disease , Anemia, Aplastic/drug therapy , Anemia, Aplastic/surgery , Antilymphocyte Serum/administration & dosage , Antilymphocyte Serum/adverse effects , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Bone Marrow Transplantation/adverse effects , Fatal Outcome , Globins/biosynthesis , Leukemia, Myeloid/drug therapy , Myelodysplastic Syndromes/complications , Time Factors
6.
São Paulo med. j ; 116(2): 1689-91, Mar.-Apr. 1998. graf
Article in English | LILACS | ID: lil-216893

ABSTRACT

The authors report the case of a chronic myeloid leukemia (CML) patient submitted to allogenic bone marrow transplantation, who had probably never entered complete remission. The disease was reactivated as a granulocytic sarcoma, next to a platinum plate installed to correct a tibia fracture 11 years earlier. Its final event was a myeloid Ph1 + blastic crisis that was unsuccessfully treated with high doses of sc interferon and citarabine.


Subject(s)
Humans , Female , Adult , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/therapy , Leukemia, Myeloid/etiology , Bone Marrow Transplantation/adverse effects , Recurrence , Transplantation, Homologous , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/etiology , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology , Blast Crisis/drug therapy , Interferons/therapeutic use , Fatal Outcome , Cytarabine/therapeutic use , Antineoplastic Agents/therapeutic use
8.
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