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Com a finalidade de avaliar o grau de exposição ao monóxido de carbono da população da cidade de São Paulo (Brasil), foram coletadas 327 amostras de sangue de adultos, procedendo-se à determinação do ...conteúdo de carboxiemoglobina pela técnica espectrofotométrica. Trinta das amostras obtidas de residentes de uma cidade (Embú-Guaçu) considerada, por suas características, como local de baixas concentrações de monóxido de carbono, foram tomadas como grupo-controle. Os valores de carboxiemoglobina encontrados foram os seguintes: policiais de trânsito: fumantes 6,3 ± 2,07, não fumantes 2,1 ± 0,68; motoristas de ônibus: fumantes 4,6 ± 1,94, não fumantes 1,6 ± 0,46; grupo-controle: fumantes 3,8 ± 1,74, não fumantes 0,8 ± 0,21.In order to evaluate the degree of exposure of the S. Paulo city (Brazil) population to carbon monoxide, 327 blood samples from adults were collected and the carboxihemoglobin content determined by the spectrophotometric method. Thirty of these samples (control group) were taken from residents of a city (Embú-Guaçu) considered by its characteristics to be an area of low environmental carbon monoxide concentration. The following results were obtained: traffic policemen: smokers 6.3 ± 2.07, non-smokers 2.1 ± 0.68; bus drivers: smokers 4.6 ± 1.94, non-smokers 1.6 ± 0.46; control: smokers 3.8 ± 1.74, non-smokers 0.8 ± 0.21.
Com a finalidade de avaliar o grau de exposição ao monóxido de carbono da população da cidade de São Paulo (Brasil), foram coletadas 327 amostras de sangue de adultos, procedendo-se à determinação do ...conteúdo de carboxiemoglobina pela técnica espectrofotométrica. Trinta das amostras obtidas de residentes de uma cidade (Embú-Guaçu) considerada, por suas características, como local de baixas concentrações de monóxido de carbono, foram tomadas como grupo-controle. Os valores de carboxiemoglobina encontrados foram os seguintes: policiais de trânsito: fumantes 6,3 ± 2,07, não fumantes 2,1 ± 0,68; motoristas de ônibus: fumantes 4,6 ± 1,94, não fumantes 1,6 ± 0,46; grupo-controle: fumantes 3,8 ± 1,74, não fumantes 0,8 ± 0,21.
In order to evaluate the degree of exposure of the S. Paulo city (Brazil) population to carbon monoxide, 327 blood samples from adults were collected and the carboxihemoglobin content determined by the spectrophotometric method. Thirty of these samples (control group) were taken from residents of a city (Embú-Guaçu) considered by its characteristics to be an area of low environmental carbon monoxide concentration. The following results were obtained: traffic policemen: smokers 6.3 ± 2.07, non-smokers 2.1 ± 0.68; bus drivers: smokers 4.6 ± 1.94, non-smokers 1.6 ± 0.46; control: smokers 3.8 ± 1.74, non-smokers 0.8 ± 0.21.
Hen egg white lysozyme injected intracutaneously into mice inhibits the intradermal diffusion of India Ink. The effect of lysozyme persists in presence of hyaluronidase. Lysozyme injected i.p. into ...mice inhibits acetic acid (i.p.) induced leakage of Pontamine Sky Blue into the abdominal cavity. The data suggest that lysozyme might be tried for applications outside the microbiological field.
This paper reports the pharmacological assessment of beta-blocking properties of new benzisothiazole and benzisoxazole derivatives, substituted in position 3-, 5- or 7- with the oxypropanolaminic ...side chain (I-VI), to of which contain the -OCH3 group in position 3- (III, V) in comparison with propranolol. The results, obtained on isoprenaline-induced chronotropic response of rat isolated atria and on isoprenaline-induced relaxation of guinea-pig tracheal strips precontracted by carbachol, suggest that the compounds (I, II, IV, VI), at variance with the methoxy-substituted (III, V), possess a beta 1-blocking activity 4-300 times lower than propranolol. pA2 values drop from 8.36 to 7.56 and 7.04 from the relative compounds substituted in position 7- (IV), 3- (I) and 5- (II), thus indicating that the position of the oxypropanolaminic chain in the benzisothiazole ring affects the ability of the molecules to interact with the beta 1-adrenoceptor. Furthermore, benzisothiazole rather than benzisoxazole ring seems to facilitate the drug-beta 1 adrenoceptor interaction, the compound (I) displaying a 10-fold higher affinity than compound (VI).
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