RESUMO
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.
Assuntos
Amazona/microbiologia , Proteínas da Membrana Bacteriana Externa/genética , Doenças das Aves/microbiologia , Chlamydophila psittaci/genética , Hepatopatias/veterinária , Filogenia , Animais , Brasil , Hepatopatias/microbiologiaRESUMO
The incidence of the psittacine beak and feather disease virus (BFDV) was investigated in Brazilian native parrots with normal feathering arriving at rescue and triage centers for wild animals (CETAS, IBAMA) in the state of Minas Gerais, Brazil. BFDV DNA was investigated by previously described PCR technique for the partial amplification of BFDV ORF-1 in DNA extracts from blood, cloacal swab or liver of psittacines. Some birds provided more than one sample. Nine species of psittacines were sampled between January 2009 and October 2010. Blood (n=46) or cloacal swab (n=128) samples were obtained from psittacines immediately upon arrival at the triage centers. Liver samples were collected from necropsied birds dead on arrival (n=167). All swab samples were negative, except for one Ara ararauna individual (n=3) which blood presented the BFDV DNA. On the other hand, 11 liver samples were positive for BFDV DNA, with a prevalence of 7.8% in Amazona aestiva (n=140). No BFDV DNA was detected in the liver of Amazona amazonica (n=11), A. vinacea (n=5), A. rhodochorytha (n=4), Anodorhynchus hyacinthinus (n=3), Ara ararauna, (n=3), Aratinga leucophtalma (n=2), Guarouba guarouba (n=1) and Pionus maximiliani (n=1). In most cases, alopecia was not associated with BFDV detection in liver, and liver histopathology was inconclusive. Although all cloacal swab samples were negative, a few psittacines (n=19) that died at CETAS-Belo Horizonte were retested, and 21% were detected as positive in liver. A group of psittacines (n=16) was clinically evaluated, and despite showing feather dystrophy, all birds were negative in the cloacal swabs, except for one, which blood sample was positive (A. ararauna). The obtained sequences of the BFDV strains BH 215 and BH 732 were deposited in the GenBank (JQ649409 and JQ649410). A 98% similarity with strain sequences described in Australia, Japan, and New Zealand was observed. It is possible that these strains arrived in Brazil through the legal and illegal trade of parrots. However, it was not possible to associate BFDV infection with the geographical origin of birds and no local marker was detected. The rates of detection, although similar to other studies, indicate the tendency of a high incidence of the disease, possibly associated with stress, and high bird density and wide transmission in captivity conditions.
Assuntos
Animais , Papagaios/anormalidades , Papagaios/crescimento & desenvolvimentoRESUMO
The incidence of the psittacine beak and feather disease virus (BFDV) was investigated in Brazilian native parrots with normal feathering arriving at rescue and triage centers for wild animals (CETAS, IBAMA) in the state of Minas Gerais, Brazil. BFDV DNA was investigated by previously described PCR technique for the partial amplification of BFDV ORF-1 in DNA extracts from blood, cloacal swab or liver of psittacines. Some birds provided more than one sample. Nine species of psittacines were sampled between January 2009 and October 2010. Blood (n=46) or cloacal swab (n=128) samples were obtained from psittacines immediately upon arrival at the triage centers. Liver samples were collected from necropsied birds dead on arrival (n=167). All swab samples were negative, except for one Ara ararauna individual (n=3) which blood presented the BFDV DNA. On the other hand, 11 liver samples were positive for BFDV DNA, with a prevalence of 7.8% in Amazona aestiva (n=140). No BFDV DNA was detected in the liver of Amazona amazonica (n=11), A. vinacea (n=5), A. rhodochorytha (n=4), Anodorhynchus hyacinthinus (n=3), Ara ararauna, (n=3), Aratinga leucophtalma (n=2), Guarouba guarouba (n=1) and Pionus maximiliani (n=1). In most cases, alopecia was not associated with BFDV detection in liver, and liver histopathology was inconclusive. Although all cloacal swab samples were negative, a few psittacines (n=19) that died at CETAS-Belo Horizonte were retested, and 21% were detected as positive in liver. A group of psittacines (n=16) was clinically evaluated, and despite showing feather dystrophy, all birds were negative in the cloacal swabs, except for one, which blood sample was positive (A. ararauna). The obtained sequences of the BFDV strains BH 215 and BH 732 were deposited in the GenBank (JQ649409 and JQ649410). A 98% similarity with strain sequences described in Australia, Japan, and New Zealand was observed. It is possible that these strains arrived in Brazil through the legal and illegal trade of parrots. However, it was not possible to associate BFDV infection with the geographical origin of birds and no local marker was detected. The rates of detection, although similar to other studies, indicate the tendency of a high incidence of the disease, possibly associated with stress, and high bird density and wide transmission in captivity conditions.(AU)
Assuntos
Animais , Papagaios/anormalidades , Papagaios/crescimento & desenvolvimentoRESUMO
Falconiformes (n=82), Strigiformes (n=84) and Cathartiformes (n=14) at a triage center (CETAS-Belo Horizonte, IBAMA, Brazil) were examined between 2008 and 2010 . No bird was reactive at hemagglutination-inhibition (HI) for antibodies against Mycoplasma gallisepticum (Mg). Two Caracara plancus (2/68) had HI titers (16-32) against Newcastle disease virus. No Chlamydophila psittaci DNA was detected in the liver (PCR; n=95). Blood smears (Giemsa; n=89) and spleen fragments (PCR; n=82) were 13.5% and 8.5% positive, respectively, for Haemoproteus only. Necropsy of Cathartiformes (n=10), Falconiformes (n=42) and Strigiformes (n=57) showed that trauma injuries were the main cause (63.3%) of admission and death, being fractures (38.5%) of the thoracic limbs (57.1%) the most frequent. Nematode (12.8%), cestode (1.8%), trematode (0.9%), and acanthocephalan (2.7%) parasite infections were relevant. Mites (Acari) were the most frequent (17.4%) external parasites, particularly Ornithonyssus sylviarum in Asio clamator and Amblyomma cajennense in Tyto alba. Chewing lice (10.1%) and Pseudolynchia spp. (9.2%) were also found. Histomonas spp. (6.4%) was found in the ceca of Bubo virginianus, Athene cunicularia, Tyto alba, and Asio clamator, but not in Falconiformes or Cathartiformes. Trichomonas spp. (oral cavity, pharynx and upper esophagus; 9.1%) was detected in Falconiformes and Strigiformes, but not in Cathartiformes. Trichomonas spp. were found in A. cunicularia, Asio clamator, Glaucidium brasilianum and Tyto alba (Strigiformes), and in Rupornis magnirostris, Milvago chimachima, Falco femoralis, Falco sparverius and Caracara plancus (Falconiformes). Coccidia (9.1%) (Sarcocystis spp., 6.4%) and mycosis were observed in most Tyto alba (70%). The evaluated Orders may not pose risks for commercial poultry production. Habitat loss and urban adaptation may be increasingly affecting raptors.(AU)
Assuntos
Animais , Aves Predatórias/classificação , Triagem , Avaliação em SaúdeRESUMO
Falconiformes (n=82), Strigiformes (n=84) and Cathartiformes (n=14) at a triage center (CETAS-Belo Horizonte, IBAMA, Brazil) were examined between 2008 and 2010 . No bird was reactive at hemagglutination-inhibition (HI) for antibodies against Mycoplasma gallisepticum (Mg). Two Caracara plancus (2/68) had HI titers (16-32) against Newcastle disease virus. No Chlamydophila psittaci DNA was detected in the liver (PCR; n=95). Blood smears (Giemsa; n=89) and spleen fragments (PCR; n=82) were 13.5% and 8.5% positive, respectively, for Haemoproteus only. Necropsy of Cathartiformes (n=10), Falconiformes (n=42) and Strigiformes (n=57) showed that trauma injuries were the main cause (63.3%) of admission and death, being fractures (38.5%) of the thoracic limbs (57.1%) the most frequent. Nematode (12.8%), cestode (1.8%), trematode (0.9%), and acanthocephalan (2.7%) parasite infections were relevant. Mites (Acari) were the most frequent (17.4%) external parasites, particularly Ornithonyssus sylviarum in Asio clamator and Amblyomma cajennense in Tyto alba. Chewing lice (10.1%) and Pseudolynchia spp. (9.2%) were also found. Histomonas spp. (6.4%) was found in the ceca of Bubo virginianus, Athene cunicularia, Tyto alba, and Asio clamator, but not in Falconiformes or Cathartiformes. Trichomonas spp. (oral cavity, pharynx and upper esophagus; 9.1%) was detected in Falconiformes and Strigiformes, but not in Cathartiformes. Trichomonas spp. were found in A. cunicularia, Asio clamator, Glaucidium brasilianum and Tyto alba (Strigiformes), and in Rupornis magnirostris, Milvago chimachima, Falco femoralis, Falco sparverius and Caracara plancus (Falconiformes). Coccidia (9.1%) (Sarcocystis spp., 6.4%) and mycosis were observed in most Tyto alba (70%). The evaluated Orders may not pose risks for commercial poultry production. Habitat loss and urban adaptation may be increasingly affecting raptors.
Assuntos
Animais , Avaliação em Saúde , Aves Predatórias/classificação , TriagemRESUMO
Os efeitos do laser de baixa potencia parecem nao se limitar ao local da aplicacao. Eles podem, por meio dos mediadores metabolicos, chegar a areas mais distantes do corpo promovendo efeitos sistemicos. O objetivo destre trabalho foi analisar as mudancas dos niveis de proteinas sericas, como uma forma de determinar um dos efeitos sistemicos do laser de baixa potencia. Trinta e seis coelhos machos foram induzidos a um processo inflamatorio articular no joelho da pata direita com terebinthina comum (Tc). Foram divididos aleatoriamente em 3 grupos, cada um com 12 animais, e subdivididos em grupos de 6 animais para receber as densidades energeticas diferenciadas de 3.4 J.cm e 8 J.cm. O grupo exerimental agudo (GEA) iniciou o laser 48 horas apos a injecao da Tc o grupo experimental cronico (GEC) recebeu laser 5 dias depois da inducao da inflamacao e o grupo ontrole, que nao recebeu tratamento e foi subdividido, por sua vez, em 6 animais (GCA) que seguiram o mesmo esquema do GEA e outros 6 (GCC), O esquema do GEC. Tambem foi colhido o sangue de outros 30 animais normais para obter um grupo-padrao. Usou-se um laser com comprimento de onda de 830 nm e potencia de 77 mW, aplicado durante 7 dias, uma sessao a cada 24 horas. O sangue foi processado para eletroforse. O modelo experimental foi adequado, uma vez que os animais dos grupos sob inducao da inflamacao se comportaram diferentemente do grupo-padrao. Nos animais com infamacao induzida, foram observadas as seguintes alteracoes diminuicao acentuada da albumina no GCC, aumento da-globulina no GEA e da-globulina nos GCA e GCC e elevacao da y-globulina no GCC. Poucas diferencas foram encontradas quando comparadas as duas doses de laser rmpregadas (3,4 e 8 J.cm ). Os resultados indicam haver efeito sistematico sobre as proteinas plasmaticas promovido pelo laser de baixa potencia nesse modelo de infamacao articular induzida
Assuntos
Proteínas Sanguíneas , Lasers , Proteínas , CoelhosAssuntos
Fibroma/patologia , Neoplasias Ovarianas/patologia , Feminino , Humanos , Pessoa de Meia-Idade , Pós-MenopausaRESUMO
Atrial natriuretic peptide (ANP) and endothelin (ET) are endogenous vasoactive factors that exert potent diuretic and natriuretic actions. We have previously shown that ANP and ET-3 act through an NO pathway to inhibit the sodium-glucose cotransporter (SGLT) in the intestine [Gonzalez Bosc LV, Elustondo PA, Ortiz MC, Vidal NA. Effect of atrial natriuretic peptide on sodium-glucose cotransport in the rat small intestine. Peptides 1997; 18: 1491-5; Gonzalez Bosc LV, Majowicz MP, Ortiz MC, Vidal NA. Effects of endothelin-3 on intestinal ion transport. Peptides 2001; 22: 2069-75.]. Here we address the role of ANP and ET-3 on SGLT activity in renal proximal tubules. In rat renal cortical brush border membranes (BBV), fluorescein isothiocianate (FITC) labeling revealed a specific 72-kD peptide that exhibits increased FITC labeling in the presence of Na+ and D-glucose. Using alpha-14C-methylglucose active uptake, rat BBV were shown to possess SGLT activity with an affinity constant (K(0.5) approximately 2.4 mM) that is consistent with the expression of the low-affinity, high-capacity SGLT2 isoform. SGLT2 activity in these preparations is dramatically inhibited by ANP and ET-3. This inhibition is independent of changes in membrane lipids and is mimicked by the cGMP analogue, 8-Br-cGMP, suggesting the involvement of cGMP/PKG pathways. These results are the first demonstration that both ANP and ET-3 inhibit rat cortical renal SGLT2 activity, and suggest a novel mechanism by which these vasoactive substances modulate hydro-saline balance at the proximal tubular nephron level.
Assuntos
Fator Natriurético Atrial/farmacologia , Endotelina-3/farmacologia , Túbulos Renais Proximais/metabolismo , Proteínas de Transporte de Monossacarídeos/antagonistas & inibidores , Animais , Transporte Biológico/efeitos dos fármacos , Membrana Celular/efeitos dos fármacos , GMP Cíclico/metabolismo , Túbulos Renais Proximais/efeitos dos fármacos , Masculino , Microvilosidades/química , Microvilosidades/efeitos dos fármacos , Microvilosidades/metabolismo , Peso Molecular , Proteínas de Transporte de Monossacarídeos/metabolismo , Óxido Nítrico/metabolismo , Ratos , Ratos Wistar , Transportador 2 de Glucose-SódioRESUMO
The purpose of this study was to describe the aspects related with the adherence of medicine in patients with epilepsy diagnosis. The non probabilistic sample was composed by fifty-four parents or legal guardians of children/adolescents with epilepsy. A self-report instrument was utilized in this study and the design was based on Health Belief Model. Descriptive statistics were utilized (mean, median, frequencies and percents) to describe the results and crosstabs tables to describe specific relations between variables. It was found that the parents/legal guardians reported that they administered their children's medications as prescribed. However, the two aspects that most affect the adherence with the treatment were that the participant forgot the medicine administration and the time between each medical appointment. We conclude that the adherence problem is complex and involved a lot of individual, social, psychological, structural, attitudes, beliefs, type of medical services factors, among others. These factors will be studied more emphatically in futures studies.
Assuntos
Cuidadores , Epilepsia/tratamento farmacológico , Cooperação do Paciente , Adolescente , Adulto , Anticonvulsivantes/administração & dosagem , Anticonvulsivantes/uso terapêutico , Criança , Pré-Escolar , Interpretação Estatística de Dados , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Porto Rico , Fatores de TempoRESUMO
The objective of this study was to identify the knowledge about sexuality (including STD/HIV/AIDS), the sexual practices more frequents and sexuality education sources in a group of students with visual impairments. A self administered questionnaire was utilized in 50 students with visual impairment. Descriptive statistics were utilized. Seventy six percent (76.0%) of the participants presented a high knowledge about sexuality and 22.0% presented moderated knowledge. The no penetrative sexual practice more frequent was corporal caress (82.0%) and the penetrative was penis-vagina (74.0%). The source of sexuality education most common was the conferences (83.9%). Although, in general, the knowledge about sexuality was high, there are "gaps" in them. There is the need to develop educational materials adapted to the needs of the studied population.
Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Educação Sexual , Comportamento Sexual , Estudantes , Pessoas com Deficiência Visual , Adulto , Feminino , Humanos , Masculino , Porto Rico , Inquéritos e QuestionáriosRESUMO
We investigated the effects of endothelin 3 (ET-3) on electrolyte transport in rat small intestine using a voltage clamp technique in Ussing's chamber. ET-3 diminished potential difference (PD) and short circuit current (Isc). ET-3 did not affect PD or Isc in low Na(+) and/or D-glucose-free medium. Phloridzine (an inhibitor of sodium-glucose cotransporter [SGLT1]) pretreatment abolished the effect of ET-3 on Isc. Methylene blue (a soluble guanylate cyclase inhibitor) or N-nitro-L-arginine methyl ester (a NOS inhibitor) pretreatment delayed the effect of ET-3 on PD and Isc. ET-3 enhanced NOS activity on enterocytes and systemic NO production. Then, ET-3 could inhibit SGLT1 with the participation of NO.
Assuntos
Endotelina-3/farmacologia , Intestino Delgado/efeitos dos fármacos , Animais , Intestino Delgado/enzimologia , Intestino Delgado/metabolismo , Transporte de Íons , Masculino , NADPH Desidrogenase/metabolismo , Nitratos/urina , Óxido Nítrico/fisiologia , Nitritos/urina , Ratos , Ratos WistarRESUMO
The increase in the population's life expectancy, the decrease in people's physical activity and the increase in calorie intake play an important role in the onset of diabetes. Therefore, this study aims at identifying risks factors for type-2 diabetes mellitus in 99 subjects from a teaching institution in a city in the interior of São Paulo State, Brazil. The results enabled the conclusion that 51.5% of the subjects were overweight; 51.5% had hereditary antecedents, 70% did not do physical exercises regularly, 68% felt stressed at work and 6% had altered pressure levels. The results showed the need for an education program within the institution aiming at awaking in the subjects the need to look for healthy life styles in order to prevent risks factors for type-2 diabetes.
Assuntos
Diabetes Mellitus Tipo 2/epidemiologia , Adulto , Diabetes Mellitus Tipo 2/etiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Risco , UniversidadesRESUMO
OBJECTIVE: This assessment was aimed at describing the perceptions of a group of Puerto Rican pregnant adolescents regarding the susceptibility, severity, benefits and barriers of adolescents pregnancy. METHOD: A non probabilistic sample of 71 adolescents that receive prenatal services at a hospital in the greater metropolitan area of San Juan, Puerto Rico. Descriptive statistics were utilized to describe the population. RESULTS: A 50.7% of the participants had a moderated high susceptibility perception and 53.5% had a high severity perception. In general, 70.4% of the participants perceived that the prenatal care during the adolescent pregnancy is highly beneficial and 60.0% had a low barriers perceptions. CONCLUSION: The assessment specifically demonstrated the need to create permanent educational programs in hospitals and schools. It is important that the health professionals develop basic educational strategies to procure effective behavior modification in adolescents.
Assuntos
Atitude Frente a Saúde , Percepção , Gravidez na Adolescência , Adolescente , Adulto , Feminino , Humanos , Gravidez , Cuidado Pré-NatalRESUMO
This work aims at identifying the risks factors of type-2 diabetes mellitus. The results show the need of an education program in institutions aiming at making the subjects aware of the necessity to look for healthy life styles in order to prevent the risks factors of type-2 diabetes.
Assuntos
Diabetes Mellitus/epidemiologia , Educação em Enfermagem , Humanos , Fatores de Risco , Escolas para Profissionais de SaúdeRESUMO
Las reacciones reversales tardías son episodios agudos producidos por un incremento de la inmunidad celular, en pacientes de lepra que ya han concluído su períodod de tratamiento. En estas circunstancias, su diagnóstico diferencial con la recidiva de la enfermedad, es a menudo dificultoso, e implica una conducta terapéutica diferentre que llevará a la reanudación de la poliquimioterapia en el último caso. Si bien existen algunos criterios que orientan la diferenciación entre ambas, debido a la importancia del compromiso neuronal que generalmente acompaña a las reacciones reversales, se preconiza el tratamiento precoz con esteroides, no sólo como prueba terapéutica sino como un método para prevenir importantes secuelas discapacitantes
Assuntos
Humanos , Diagnóstico Diferencial , Hanseníase , RecidivaRESUMO
Las reacciones reversales tardías son episodios agudos producidos por un incremento de la inmunidad celular, en pacientes de lepra que ya han concluído su períodod de tratamiento. En estas circunstancias, su diagnóstico diferencial con la recidiva de la enfermedad, es a menudo dificultoso, e implica una conducta terapéutica diferentre que llevará a la reanudación de la poliquimioterapia en el último caso. Si bien existen algunos criterios que orientan la diferenciación entre ambas, debido a la importancia del compromiso neuronal que generalmente acompaña a las reacciones reversales, se preconiza el tratamiento precoz con esteroides, no sólo como prueba terapéutica sino como un método para prevenir importantes secuelas discapacitantes(AU)
Assuntos
Humanos , Hanseníase , Diagnóstico Diferencial , RecidivaRESUMO
Histochemical reaction of NADPH-diaphorase (NOS-NADPH-d) was used to identify NO synthesis. A 30-min 0.1 microg microg/kg/min ANP infusion led to about a 10% and 35% increase in small and large intestine enterocytes stain respectively. This increase was abolished by a bolus of 1 mg/kg L-NAME before ANP infusion in small intestine, and partially abolished it in colon. Incubation of small and large intestine with 0.5 microM ANP increased stain at about 20%. In both tissues the preincubation with 0.1 mM L-NAME abolished the ANP effect. Incubation with 0.1 mM 8-Br-cGMP enhanced staining about 70% and 30% in small and large intestine respectively. Our results show that ANP enhances NOS-NADPH-d activity, suggesting that ANP stimulates NO synthase in enterocytes by L-arginine-NO pathway. 8-Br-cGMP mimicked the effect of ANP described above. Therefore, the guanylate cyclase-coupled natriuretic receptors, NPR-A and NPR-B, probably mediate this ANP effect.
Assuntos
Fator Natriurético Atrial/farmacologia , Mucosa Intestinal/efeitos dos fármacos , NADPH Desidrogenase/análise , Óxido Nítrico/biossíntese , Animais , Colo/citologia , Colo/efeitos dos fármacos , Colo/enzimologia , GMP Cíclico/análogos & derivados , GMP Cíclico/farmacologia , Guanilato Ciclase/metabolismo , Histocitoquímica , Processamento de Imagem Assistida por Computador , Mucosa Intestinal/citologia , Mucosa Intestinal/enzimologia , Intestino Delgado/citologia , Intestino Delgado/efeitos dos fármacos , Intestino Delgado/enzimologia , Isoenzimas , Masculino , NG-Nitroarginina Metil Éster/farmacologia , Óxido Nítrico Sintase , Fotoperíodo , Ratos , Ratos Wistar , Receptores do Fator Natriurético Atrial/metabolismoRESUMO
Acute basophilic leukaemia is usually characterized by a very rapid clinical course, hyperhistaminemia, resistance to antineoplastic therapy and early death due to complications related to disease. This entity is a rare condition, accounting for less than two percent of all haematopoietic malignancies. Most of the case reports are basophilic blast crisis in patients with a previous lympho or myeloproliferative disorder. A 62-year-old woman who was diagnosed as Philadelphia positive chronic myelogenous leukaemia after four years of evolution developed a basophilic blast crisis, whose characteristics are reported. Accompanying this transformation there was also a cytogenetic change. Despite chemotherapy the patient died of disease progression.