RESUMO
Background: There is an association between arsenic exposure and prostatic cancer mortality. Aim: To analyze and to compare the serum levels of total prostatic specific antigen (TPSA) in asymptomatic men of a rural zone, exposed and not exposed to high concentrations of arsenic (As) in drinking water. Material and Methods: The study included 161 men that were subjected to a clinical evaluation, serum TPSA determination and a trans rectal ultrasonography. Exposed and non-exposed subjects were divided in groups GA, GB and GC according to TPSA levels (<4 ng/ml, 4.1-10 ng/ml and >10.1 ng/ml respectively). Results: Exposed and non-exposed subjects had similar TPSA levels. Among exposed subjects, 88.2, 8,8 and 3% were ascribed to groups GA, GB and GC respectively. The figures for non-exposed subjects were 90. 6, 6,3 and 3,1%. The area under the receiver operating characteristic (ROC) curve for TPSA in exposed and non-exposed subjects was 0.64 (95% confidence intervals (CI) 0.40-0.9) and 0.71 (95% CI 0.6-0.8) respectively. Conclusions: No differences in TPSA levels between subjects exposed and non-exposed to arsenic were observed in this study.
Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Intoxicação por Arsênico/sangue , Água Potável/química , Exposição Ambiental/estatística & dados numéricos , Antígeno Prostático Específico/sangue , Neoplasias da Próstata/diagnóstico , Argentina , Exposição Ambiental/efeitos adversos , Exposição Ambiental/análise , Métodos Epidemiológicos , População Rural/estatística & dados numéricos , Biomarcadores Tumorais/sangueRESUMO
El objetivo de esta investigación fue evaluar los niveles del ácido siálico (S) y enzimas hepáticas en individuos que consumieron agua con arsénico (As) relacionándolos con la presencia ("I con H") o no de hepatomegalia ("I sin H"). Se incluyeron 200 individuos, 85 correspondieron al Grupo Control (GC), 32 "I con H" y 83 "I sin H" quienes habían consumido agua con niveles mayores a 0,01 mg/L. Se les tomó una muestra de sangre venosa y se les realizó el dosaje del S y de las enzimas alaninaninotransferasa (ALT), aspartatoaminotransferasa (AST), fosfatasa alcalina (FAL), gamma glutamil transferasa (GGT), bilirrubina directa (BD) y total (BT), lactato deshidrogenasa (LDH) y 5' nucleotidasa (5'Nu). En los individuos que consumieron agua contaminada se encontró un aumento de los niveles del S. En el grupo "I con H", la FAL, la GGT y la LDH se encontraron aumentadas. En el grupo "I sin H", la GGT y la LDH tuvieron niveles elevados. En los individuos expuestos al As, no se encontraron alteraciones en los otros parámetros bioquímicos estudiados y la prevalencia de hepatomegalia no fue significativa. Los cambios bioquímicos encontrados fueron compatibles con la presencia de un patrón colestásico. Estos datos muestran que la concentración del S sérico podría servir como un indicador de exposición al arsénico que podría ser utilizado en forma conjunta con otros marcadores.
The aim of this study was to investígate the relationship between the levels of serum sialic acid (S) and hepatic enzymes in individuáis who drink As contaminated water. Two hundred individuáis were selected: 85 were the control group, 32 presented hepatomegaly (I with H) and 83 did not present hepatomegaly (I without H) who had consumed drinking water containing As levels higher than O.Ol mg/L. Blood samples were collected for the determination of S and hepatic enzymes in serum: alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (FAL), gamma glutamil transpeptidase (GGT), direct (BD) and total bilirrubin (BT), lactate deshydrogenase (LDH) and 5'nucleotldase (5'Nu). The populatlon exposed to As in drinking water presented high levels of S, FAL, GGT, LDH and GGT, LDH were increased in I with H and I without H respectively. No significant changes were observed in the other parameters studied. Prevalence of hepatomegaly was not significantly higher and the hepatic biochemical changes were related with the presence of cholestasis in As-exposed people. These data show that people with high As level intake would have an increased sialoprotein replacement which could be an marker with other one of the alterations caused by arsenic.
Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Intoxicação por Água , Ácido N-Acetilneuramínico/toxicidade , Intoxicação por Arsênico/complicações , Argentina , Arsênio/toxicidade , Microbiologia da Água , HepatomegaliaRESUMO
Se determinó la contaminación con Arsénico (As) en agua de bebida en Leales (L) y Graneros (G) (Tucumán), y se relacionó el nivel de contaminación con la profundidad de los pozos y la presencia de signos dermatológicos. La determinación de As fue realizada por el método cuantitativo de Gutzei modificado. Se entrevistaron 122 individuos, se evaluaron los signos dermatológicos de arsenicismo. El 9,3% y 34,7% de 140 muestras de L y 95 de G respectivamente tienen niveles permitidos. Las concentraciones promedios en L fueron 0,112; 0,087 y 0,096 mg/L para la profundidad menor a 10; 11 a 25 y mayor a 25 metros respectivamente. No se encontró diferencia entre las distintas profundidades. Las concentraciones promedios en Graneros fueron 0,163; 0,045; 0,405; 0,056 mg/L para los pozos menor a 10; 11 a 25 con concentraciones moderadamente y marcadamente elevadas, y mayor a 25 metros respectivamente. Se encontraron diferencias entre las concentraciones de As y la profundidad de los pozos. El 12,4% de los 89 individuos examinados de L y el 39,4% de los 33 individuos de G presentaron signos dermatológicos. Es una patología de alta prevalencia en áreas deprimidas del noroeste argentino, se vincula a una inadecuada provisión de agua, es un problema de alta importancia socio-sanitaria por su magnitud; su severidad real y potencial y su evitabilidad.
The aim of this work was to investigate the contamination with Arsenic (As) in drinking water in Leales (L) and Graneros (G) (Tucumán), the relationship between the level of pollution and the depth of the wells, and the presence of cutaneous signs. The determination of As was made by the quantitative method of modified Gutzei. A hundred and twenty-two individuals were selected. A total of 9.3% and 34.7% of 140 samples of L and 95 of G respectively have allowed levels.The average concentrations in L were 0.112; 0.087 and 0.096 mg/L for depths lower than 10; 11 to 25 meters, and higher than 25 meters respectively. No difference was found between the different depths. The average concentrations in G were 0.163; 0.045; 0.405; 0.056 mg/L for the wells lower than 10; 11 to 25: meters with concentrations moderately and markedly raised, and higher than 25 meters respectively. Differences were found between the concentrations of As and the depth of the wells. A total of 12.4% of 89 of L and 39.4% of 33 individuals examined of G showed cutaneous signs. This pathology is of high importance in depressed areas of the Argentina, is linked to an inadequate provision of water.