Resumo Introdução O uso e a prescrição inadequados de antimicrobianos e a pressão da indústria farmacêutica para a sua utilização transformaram a resistência bacteriana a esses medicamentos em um problema mundial de saúde pública. Objetivo O objetivo do estudo foi analisar o processo de implantação da Resolução da Diretoria Colegiada (RDC) da Agência Nacional de Vigilância Sanitária (Anvisa) de nº 20/2011, que dispõe sobre o controle dos antimicrobianos. Método Utilizou-se o Modelo de Múltiplos Fluxos de Kingdon para examinar a inserção do tema do controle dos antimicrobianos na agenda governamental e sua posterior conformação em política pública. Foram empregadas diversas estratégias metodológicas, como a revisão bibliográfica, a análise de documentos, a busca de notícias veiculadas na mídia e informações advindas de entrevistas com informantes-chave. Conclusão Apesar da existência de legislações e regulamentações sobre o uso e a prescrição de antimicrobianos, além da ampliação do acesso da população aos profissionais de saúde para evitar a automedicação e promover o uso correto, esforços como a educação sanitária para profissionais e a população e o reforço da fiscalização sanitária devem ser efetivamente implementados, não apenas para alcançar o uso racional, mas também para diminuir a resistência aos antimicrobianos.

Abstract Introduction Inappropriate use and prescription of antimicrobials and the pressure from the pharmaceutical industry for their use have turned bacterial resistance into a global public health problem. Objective This study aimed to analyze the implementation process of ANVISA’s Board of Directors Resolution (RDC) 20/2011 for antimicrobials control. Method Kingdon’s Multiple Streams Model was used to examine the inclusion of antimicrobial control into the government agenda and its subsequent shaping into public policy. Several methodological strategies were employed, such as bibliographic review, document analysis, the search for stories in the media and information from interviews with key informants. Conclusion In addition to legislation and regulations of the use and prescription of antimicrobials, easier population’s access to health professionals to avoid self-medication and promote correct use, it is necessary to implement efforts such as education of professionals and the general population, not only to achieve rational use, but also to reduce antimicrobial resistance.

ABSTRACT PURPOSE: To investigate the protective effect of L-arginine on the prostate (nonneoplasic) of rats with radiation-induced injury. METHODS: Twenty-nine Wistar rats, male adult, allocated into three groups: Control group (C) was not exposed to irradiation (n=10); Radiated group (R) had undergone pelvic irradiation (n=10); Supplemented and radiated group (R+S) had undergone pelvic irradiation plus L-arginine supplementation (n=9). The animals were observed for signs of toxicity. After euthanization, the prostate was dissected under magnification and stained by hematoxylin and eosin to study acinar structures and stained with Picrosirius red for collagen analysis. RESULTS: After radiation exposure, all animals presented diarrhea, but supplementation with L-arginine reduced this effect. The weight gain in the R+S group was significantly higher than in the C and R groups. In the R+S group the collagen density and the prostate acinar area was similar to the R and C groups. Epithelial height was significantly reduced in group R compared with group C (p<0.0001). When comparing the group R+S with R, a statistical difference was observed to be present (p<0.0001). CONCLUSIONS: Pelvic radiation promotes systemic effects and some structural modifications in the ventral prostate of rats. These modifications can be prevented by oral supplementation with L-arginine.

PURPOSE:To investigate the structural and functional changes induced by corticosterone (CORT) in the ventral prostrate (VP) of rats in order to study chronic stress effects in the prepubertal phase.METHODS:Wistar rats received daily saline or CORT injections during the pubertal period from the 5th to 25th day of postnatal life. The animals were distributed into four groups: 1 - Control (n=5); 2 - Control 99mTc-P (n=5); 3 - Treated with CORT (n=14); 4 - Treated with CORT and 99mTc-P (n=10). All rats were sacrificed at two months of age. Technical tissue uptakes of 99mTc-P were used to evaluate the functional and stereological methods for morphological analysis.RESULTS:Acini distribution in the group treated with CORT differed significantly (p<0.0001) from the control. The control group's epithelial average height (10.01±0.24 microns) was statistically significant (p<0.0001) from rats treated with CORT (19.27±0.73microns). The collagen distribution was lower in the treated group (2.79%) when compared to control (3.97%). The radioactivity percentage in the groups marked with 99mTc-P (%Ati/g) did not demonstrate a statistically significant difference (p=0.285897).CONCLUSION:Chronic administration of corticosterone in prepubertal rats causes changes in their acinar structure and their ventral prostate stroma, indicating possible deleterious effects of this hormone.