Evaluation of antitumour and antiinflammatory effects and acute toxicity of extracts obtained from Streptomyces spp. isolated from m Soils of Paraiba (Brazil)

Bioactive metabolites produced by Streptomyces spp. commonly exhibit a variety of pharmacological properties such as antibiotic, antitumor, enzymatic and anti-helminthic. The study evaluated the possible antitumor and anti-inflammatory effects and the degree of toxicity of extracts isolated from Streptomyces in experimental models with animals. The extracts Sp-1 and Sp-3 did not have anti-inflammatory effect. In the Sarcoma 180 model the effects of Sp-1 and Sp-3 were significant with decreased average weights of tumors at 10 mg/kg, and reduction of up to 73 % of initial weight of the implanted tumor. For tumors of Ehrlich Carcinoma, the doses showed no significant effect on the average weight of tumors. Stimulant effects, such as exophthalmia, agitation, escape reaction, irritability, tremors and dermatitis were observed after 1 h of administration, depressive reactions were also observed, such as prostration and decreased respiratory rate, and no deaths were highlighted.Colegio de Farmacéuticos de la Provincia de Buenos Aire

Spatial analysis of leptospirosis and toxoplasmosis seroprevalence in the canine population in an area of socioeconomic and environmental vulnerability

ABSTRACT Leptospirosis and toxoplasmosis are zoonoses of occupational character that are spread worldwide, mainly in tropical and socioeconomically vulnerable areas. Both diseases have vertebrate hosts, which spread the infectious agent to the environment and are potentially infectious to humans and can progress to fatal cases. The present study reinforces the importance of One Health for the control and prophylaxis of leptospirosis and toxoplasmosis using sentinel animals in areas of socioeconomic vulnerability based on a serological study. A total of 336 blood samples were obtained from the canine population of the urban district, which has high rates of poverty and sanitation. The results were analyzed based on seroreactivity animals and georeferencing by kernel spatial mapping. A total of 43.3% (52/120) of the animals were seroreagents for anti-Leptospira spp., with a predominance of Canicola (35/52 = 67.3%) and Pyrogenes (5/52 = 9.6%), while 52.97% (178/336) of the dogs were seroreactive for anti-Toxoplasma gondii. The presence of seroreagent dogs for both zoonosis alert to the inadequate hygienic-sanitary conditions of the studied region, and highlight the importance of a survey of the social, economic and environmental structure to identify factors related to the links in the epidemiological chain of pathogen transmission and necessary corrective actions