RESUMEN
Emergence of zoonotic infectious diseases represent one of the main threats to people worldwide. To properly understand and prevent zoonoses is fundamental to study their epidemiology and the possibility of spillover events, especially for commercially intensive domestic animals and humans. Here, we studied 210 wild birds from the "Ipucas" region, which consists of fragments of the Amazon Forest interspersed with fragments of the "Cerrado" that is subject to seasonal flooding and 75 domestic birds from neighboring poultry farming. Then, we molecularly diagnosed Salmonella and Chlamydia from wild birds and poultry. Among the wild birds, four were diagnosed with Chlamydia psittaci and 23 with Salmonella spp., while we detected 15 poultry infected by Salmonella spp. and no poultry with C. psittaci. We highlighted the common infections of wild and domestic birds in an anthropologically modified environment and potential spillover of Salmonella pathogens among wild and livestock birds. Those infections can harm the health of native and domestic species.
Asunto(s)
Animales Domésticos , Enfermedades de las Aves , Humanos , Animales , Brasil , Aves/microbiología , Animales Salvajes/microbiología , Zoonosis/microbiología , Salmonella , Bosques , Enfermedades de las Aves/microbiologíaRESUMEN
Salmonella Heidelberg (SH) has represented a great concern to the Brazilian poultry industry in the last years. It is known that immunosuppression in poultry is a contributing factor to increase Salmonella faecal shedding and to disturb control programmes. Not only infectious bursal disease (IBD) virus but also some live vaccines have been reported to induce immunosuppression. In the present study we assessed the effects of two live vaccines against IBD on SH-infected broiler chicks. At 7 days of age, birds of three groups (vaccinated with recombinant HVT-IBD vector, with immune complex-IBD vaccine and unvaccinated) were orally challenged with 1 x 108 CFU of SH. A group of hatchmates remained unvaccinated/unchallenged to serve as negative controls. Caecal colonization and systemic invasion were evaluated by bacterial enumeration at 1, 3, 5, 7 and 14 days post-infection (Dpi) and SH faecal shedding assessed by cloacal swabs at 3, 7, 10 and 14 Dpi. The counts of SH in caecal contents were higher in birds vaccinated with immune complex-IBD than in those that received the HVT-IBD vector vaccine at 5, 7 and 14 dpi (p 0.01). There were no statistical differences in bacterial counts in liver and spleen among birds of different groups. Cloacal swabs also indicated that the birds vaccinated with immune complex-IBD shed more SH than those vaccinated with HVT-IBD vector or those unvaccinated (p 0.01). The results of the present study suggested that the immunosuppressive effect of the immune complex-IBD vaccine helped to increase the SH-faecal shedding in the infected birds.
Asunto(s)
Animales , Factores Inmunológicos/análisis , Pollos/microbiología , Infecciones por SalmonellaRESUMEN
Salmonella Heidelberg (SH) has represented a great concern to the Brazilian poultry industry in the last years. It is known that immunosuppression in poultry is a contributing factor to increase Salmonella faecal shedding and to disturb control programmes. Not only infectious bursal disease (IBD) virus but also some live vaccines have been reported to induce immunosuppression. In the present study we assessed the effects of two live vaccines against IBD on SH-infected broiler chicks. At 7 days of age, birds of three groups (vaccinated with recombinant HVT-IBD vector, with immune complex-IBD vaccine and unvaccinated) were orally challenged with 1 x 108 CFU of SH. A group of hatchmates remained unvaccinated/unchallenged to serve as negative controls. Caecal colonization and systemic invasion were evaluated by bacterial enumeration at 1, 3, 5, 7 and 14 days post-infection (Dpi) and SH faecal shedding assessed by cloacal swabs at 3, 7, 10 and 14 Dpi. The counts of SH in caecal contents were higher in birds vaccinated with immune complex-IBD than in those that received the HVT-IBD vector vaccine at 5, 7 and 14 dpi (p 0.01). There were no statistical differences in bacterial counts in liver and spleen among birds of different groups. Cloacal swabs also indicated that the birds vaccinated with immune complex-IBD shed more SH than those vaccinated with HVT-IBD vector or those unvaccinated (p 0.01). The results of the present study suggested that the immunosuppressive effect of the immune complex-IBD vaccine helped to increase the SH-faecal shedding in the infected birds.(AU)
Asunto(s)
Animales , Pollos/microbiología , Infecciones por Salmonella , Factores Inmunológicos/análisisRESUMEN
Chlamydia psittaci was detected in 152 (72%) blue-fronted Amazon parrots (Amazona aestiva, parrot from the Psittacidae family) out of a population of 212 that died during 2009-2011 in a wildlife rescue and rehabilitation centre in Minas Gerais, Brazil, following rescue from illegal wildlife trafficking. The macroscopic changes observed in these animals were hepatomegaly with multifocal white foci visible at the serosal surfaces of the liver, and extending into the parenchyma, and splenomegaly. The microscopic lesions observed in the liver included multifocal to coalescing miliary necrosis of hepatocytes with infiltration by heterophils, lymphocytes and plasma cells. In the spleen, loss of the normal architecture and infiltration by macrophages and plasma cells were observed. Stained tissue sections (Gimenez technique) revealed small round clusters suggestive of C. psittaci (reticulate bodies) in the cytoplasm of macrophages from the liver and spleen. Nine sequences of segments of the ompA gene, obtained from different individuals, were randomly selected for sequencing. The phylogenetic analyses showed that all strains clustered with genotype A, which is the most virulent genotype for birds. This genotype is involved in mortality of psittacines, is easily transmitted in captivity and represents a problem for successful rehabilitation. The results indicate the necessity to improve biosecurity in triage and to provide individual personal protection for professionals and caretakers.
Chlamydia psittaci a été détectée chez 152 (72 %) amazones à front bleu (Amazona aestiva, perroquet de la famille des Psittacidés) sur un total de 212 individus rescapés du trafic illégal et décédés en 2009 et 2011 dans un centre de sauvetage et de réhabilitation de la faune sauvage à Minas Gerais (Brésil). Les modifications macroscopiques observées sur ces oiseaux étaient une hépatomégalie avec des foyers blancs multifocaux visibles sur les surfaces séreuses du foie et s'étendant dans le parenchyme, et une splénomégalie. Les lésions microscopiques observées dans le foie comprenaient une nécrose miliaire multifocale à coalescente des hépatocytes avec infiltration d'hétérophiles, de lymphocytes et de plasmocytes. Dans la rate, une perte de l'architecture normale et l'infiltration de macrophages et de plasmocytes ont été observées. La coloration de coupes de tissus (technique de Gimenez) a révélé de petites grappes rondes évoquant C. psittaci (corps réticulés) dans le cytoplasme des macrophages du foie et de la rate. Neuf produits segmentés d'une partie du gène ompA, obtenus de différents individus, ont été sélectionnés de manière aléatoire pour le séquençage. Les analyses phylogénétiques ont montré que toutes les souches se regroupaient dans le génotype A, qui est le plus virulent pour les oiseaux. Ce génotype est responsable de cas de mortalité chez les psittacidés et se transmet facilement en captivité, ce qui représente un risque pour la réussite des opérations de réhabilitation. Au vu de ces résultats, les auteurs soulignent la nécessité d'améliorer la biosécurité lors du tri des animaux dans les centres de soins et de fournir une protection individuelle aux professionnels et aux gardiens.
Se detectó Chlamydia psittaci en 152 (72%) amazonas frentiazules (Amazona aestiva, loro de la familia Psittacidae) de un total de 212 que murieron durante 20092011 en un centro de rescate y rehabilitación de fauna silvestre de Minas Gerais, Brasil, tras haber sido rescatadas del tráfico ilegal. Los cambios macroscópicos que se observaron en estos animales fueron hepatomegalia con focos blancos multifocales visibles en las superficies serosas del hígado y que se extendían hacia el parénquima, y esplenomegalia. Las lesiones microscópicas observadas en el hígado consistieron en necrosis miliar multifocal a coalescente de hepatocitos con infiltración de heterófilos, linfocitos y células plasmáticas. En el bazo, se observó pérdida de la arquitectura normal y infiltración de macrófagos y células plasmáticas. Cortes de tejido teñidos (con la técnica de Giménez) revelaron pequeños racimos redondos que sugerían la presencia de C. psittaci (cuerpos reticulados) en el citoplasma de macrófagos del hígado y del bazo. A partir de distintos individuos, se escogieron aleatoriamente nueve segmentos del gen ompA para ser secuenciados. Los análisis filogenéticos mostraron que todas las cepas correspondían al genotipo A, que es el más virulento para las aves. Este genotipo está involucrado en la mortalidad de psitácidas, se transmite fácilmente en cautiverio y supone un riesgo para el éxito de la rehabilitación. Los resultados indican la necesidad de mejorar la bioseguridad en el triaje y de procurar protección personal individual a profesionales y cuidadores.
Asunto(s)
Amazona/microbiología , Proteínas de la Membrana Bacteriana Externa/genética , Enfermedades de las Aves/microbiología , Chlamydophila psittaci/genética , Hepatopatías/veterinaria , Filogenia , Animales , Brasil , Hepatopatías/microbiologíaRESUMEN
Drug allergy is a type B adverse drug reaction, which is unpredictable and difficult to prevent or manage. In patients who have a previous history of drug allergy it must be confirmed by laboratorial diagnosis. However, the diagnostic test remains a major problem in clinical practice. Skin testing is validated for some drugs, such as penicillin, but not for others. Provocation test is a confirmatory test but bears the risk of severe reactions. Lymphocyte transformation test is a reliable test but is considered as a research tool. This review addresses the most recent published literature regarding the techniques which have already been developed as well as the new tests that can be promising alternatives for diagnosis of drug allergy.
Asunto(s)
Alérgenos , Usos Diagnósticos de Compuestos Químicos , Hipersensibilidad a las Drogas/diagnóstico , Preparaciones Farmacéuticas , Alérgenos/inmunología , Antígenos CD/inmunología , Antígenos de Diferenciación de Linfocitos T/inmunología , Basófilos/inmunología , Basófilos/metabolismo , Hipersensibilidad a las Drogas/inmunología , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Humanos , Inmunoglobulina E/sangre , Interleucina-5/biosíntesis , Interleucina-5/inmunología , Lectinas Tipo C , Activación de Linfocitos/inmunología , Hidrolasas Diéster Fosfóricas/inmunología , Glicoproteínas de Membrana Plaquetaria/inmunología , Pirofosfatasas/inmunología , Pruebas Cutáneas , Subgrupos de Linfocitos T/inmunología , Subgrupos de Linfocitos T/metabolismo , Tetraspanina 30RESUMEN
This paper summarizes the first year of activity of the Ceará State Pharmacovigilance System (SIFACE) as a strategy to discuss practical and methodological problems related to developing pharmacovigilance in Brazil. Siface is being structured by the Group for the Prevention of Improper Use of Pharmaceuticals (GPUIM), based on hospital pharmacies. A total of 63 reports (119 suspected adverse drug reactions, or ADRs) were processed, the majority among women (55.7%) and children (34.4%). Antibiotics were the drug group most frequently involved, and the most common reactions were dermatological. In 20% of the cases, patients had been re-exposed to drugs previously reported as producing adverse reactions, thus highlighting the importance of pharmacovigilance to prevent ADRs.
Asunto(s)
Servicios de Información sobre Medicamentos/organización & administración , Farmacoepidemiología , Vigilancia de Productos Comercializados/normas , Adolescente , Adulto , Sistemas de Registro de Reacción Adversa a Medicamentos , Brasil , Niño , Preescolar , Utilización de Medicamentos , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Calidad de la Atención de Salud/normasRESUMEN
This paper discusses the potential benefits of pharmacovigilance in promoting rational drug use and the implementation of drug policies, especially drug regulation, based on the WHO International Drug Monitoring Program. The initial development of pharmacovigilance in Brazil is presented and the need for a national pharmacovigilance system is stressed.
Asunto(s)
Vigilancia de Productos Comercializados , Brasil , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Programas de Gobierno/organización & administración , Humanos , Organización Mundial de la SaludRESUMEN
INTRODUCTION: The data presented are part of a World Health Organization (WHO) multicenter study of self-medication in Latin America. Brazilian sites included: Belo Horizonte, Fortaleza, the city of S. Paulo and outlying locations. The objective was to characterize self-medication practices by analyzing drugs sought by consumers in pharmacies without a physician's prescription. MATERIAL AND METHOD: Drugs were classified according to the Anatomic Therapeutic Classification codes, and analyzed with respect to 1) intrinsic value; 2) recognition as an essential drug (by either WHO or Brazil); 3) number of active ingredients; and 4) requirement for prescription. RESULTS: Five thousand, three hundred and thirty-two (5,332) different drugs, with 785 distinct active ingredients were sought. Of these, 49.5% were fixed dose combinations, 53.0% were of little intrinsic value, 44.1% required a physician's prescription, 71.0% were not essential drugs, and 40.0% of requests were based on prior prescriptions from the physician. The drugs most requested were analgesics (17.3%), nasal descongestants (7.0%), antirheumatic anti-inflammatory drugs (5.6%), and systemic anti-infective drugs (5.6%). CONCLUSIONS: Self-medication in Brazil reflects the needs and habits of the population. It is strongly influenced by physician's-prescribing habits and by the inadequate selectivity of the Brazilian pharmaceutical market.
Asunto(s)
Automedicación/estadística & datos numéricos , Adulto , Brasil , Femenino , Humanos , Masculino , Medicamentos sin Prescripción , Farmacias , Encuestas y CuestionariosRESUMEN
Misoprostol is used by women in Brazil in case of unwanted pregnancy to attempt abortion. This paper reports the characteristics, pattern of misoprostol use and opinions of a group of 102 women (median age 25 years, range 16-49 years), from Fortaleza, capital of Ceará state, who had used misoprostol to attempt abortion. Seventy-five percent were women of lower social class, 58% had less than 8 years of education and 46% were never married. Misoprostol was used for the first induced abortion by 65 women. Modal dose was 4 tablets--200 micrograms of misoprostol each--most frequently 2 tablets by oral route and 2 tablets by intravaginal route. This pattern of use was associated with the highest rate of abortion, mainly at 9-12 weeks of amenorrhea. Fifty-five percent of women had no pregnancy test; 41% had 8 weeks or less of amenorrhea. Curettage was performed in 49 of 84 women who reported abortion and in 41 of 43 women who entered the hospital. Infection and uterine perforation were the complications described. Seventy-two percent of women were in favor of legalization of abortion, but 52% were also in favor of the prohibition of misoprostol sales; 66% would not repeat misoprostol use and 53% would not suggest it to a friend. The poorest women were less favorable to misoprostol ban. Despite the current lack of safer alternatives, misoprostol does not seem a satisfactory solution to illegal abortion in Brazil.
Asunto(s)
Aborto Inducido , Misoprostol , Administración Oral , Adolescente , Adulto , Factores de Edad , Brasil , Escolaridad , Femenino , Humanos , Estado Civil , Persona de Mediana Edad , Misoprostol/administración & dosificación , Misoprostol/efectos adversos , Embarazo , Factores Socioeconómicos , VaginaRESUMEN
Misoprostol, a prostaglandin E1 analogue indicated for ulcer treatment, has been widely used as an abortifacient by women in Brazil, where abortion is legal only in cases of rape or incest, or to save the woman's life. Because misoprostol is an inefficient abortifacient, many women who use it have incomplete abortions and need uterine evacuation. We reviewed the records of women admitted to the main obstetric hospital of Fortaleza, capital of Ceará state, Brazil, between January, 1990, and July, 1992, for uterine evacuation after induced abortion. The number of incomplete abortions induced by misoprostol increased substantially during the first half of 1990, and declined thereafter. Of the 593 cases in 1991, 75% were related to misoprostol, 10% to the use of other specified drugs, and 6% to unspecified drugs. For the remaining 9% the procedure used was not recorded; these included 3% in whom abortion had been induced by a clandestine abortionist. The number of uterine evacuations per month fell from 89 in August, 1990, to 62 in July, 1991, when sales of misoprostol in Ceará state were suspended. The fall continued after the sale of misoprostol ceased, to about 20 cases in December, 1991; numbers remained around this level until June, 1992, sustained by clandestine sales. The lack of access to contraception is the main reason for the large numbers of unplanned pregnancies and is a major public health issue for Brazilian women. The prohibition of abortion creates a void in which misuse of medicines is one extra complication, mainly because of the poor control of drug marketing.