An epidemiological study was conducted on a population attending outpatient clinics in Manaus, Amazon, Brazil to determine the prevalences of infection by the Entamoeba histolytica/E. dispar complex and by E. histolytica alone, as well as to identify the risk factors involved in transmission. The study was conducted in two phases: survey and case-control. Face-to-face interviews were carried out and faecal samples collected from 1578 individuals. Faeces were examined by optical microscopy and tested for the pathogenic E. histolytica specific antigen. Positivity to E. histolytica/E. dispar was 21.5% (340 cases). Cases were compared with 340 control samples, negative for the E. histolytica/E. dispar complex based on examination by optical microscopy. The analysis was conducted by logistic regression. The risk factors identified were: place of residence, age, ingestion of raw vegetables, quality of water consumed, number of rooms and bedrooms per house, and having other protozoan infections. Specific antigen detection tests identified 22 participants infected by E. histolytica (6.8%) among those positive for E. histolytica/E. dispar. There was a higher proportion of males among participants infected by E. histolytica than among those with E. dispar infections. The study population was asymptomatic or presented non-specific symptoms that could be attributed to amoebiasis.
RESUMOEste trabalho teve como objetivo avaliar a variação entre diferentes raças das medidas radiográficas da articulação lombossacra. Foram utilizados 20 cães da raça Pastor Alemão, 20 cães da raça Rottweiler e 20 da raça Doberman. A articulação lombossacra foi avaliada radiograficamente com os membros pélvicos em posição neutra (N), em ventroflexão (VF) e dorsoextensão (DE). Foram mensurados os ângulos entre os processos articulares de L7 e S1 (PA), entre as epífises distal de L7 e proximal de S1 (EPIF), o ângulo lombossacro (LS), a amplitude de movimento (ROM) desses ângulos, o ponto de interseção das retas que formam esses ângulos e a respectiva ROM. Os resultados mostraram que a altura do canal vertebral em L7 é menor no Pastor Alemão (9,5mm) e maior no Rottweiler (10, (Scharf et al., 2004). A estenose degenerativa do canal vertebral lombossacro é a causa mais comum de síndrome da cauda equina e ocorre mais comumente em cães pertencentes às raças de médio e grande porte, como o Pastor http://dx The lumbosacral joint was assessed radiographically with the hind limbs in neutral position (N), in ventral flexion (VF) and dorsal extension (DE). We measured the angles between the L7 and S1 articular processes (PA), between the distal L7 and S1 proximal epiphysis (EPIF), the lumbosacral angle (LS), range of motion (ROM) of these angles, the intersection point of the lines that form these angles and their ROM. The results show that the height of the spinal canal in L7 is lower in German Shepherds (9.5mm) than in Dobermans (10mm) and Rottweilers (10.5 mm). The EPIF-DE was higher in the German Shepherd (38.03°). The PA-N was lower in German Shepherd (15.98 °). The LS-VF was lower in the Doberman (170.01°), and LS did not differ statistically between German Shepherd (179.17°) and Rottweiler (176.61°). The ROM of the LS and EPIF angles were greater in the German
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