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Search Results: 1 - 10 of 182454 matches for " Hamilton de;Castro "
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Hypophosphatemic rickets and osteomalacia
Menezes Filho, Hamilton de;Castro, Luiz Claudio G. de;Damiani, Durval;
Arquivos Brasileiros de Endocrinologia & Metabologia , 2006, DOI: 10.1590/S0004-27302006000400025
Abstract: the hypophosphatemic conditions that interfere in bone mineralization comprise many hereditary or acquired diseases, all of them sharing the same pathophysiologic mechanism: reduction in the phosphate reabsorption by the renal tubuli. this process leads to chronic hyperphosphaturia and hypophosphatemia, associated with inappropriately normal or low levels of calcitriol, causing osteomalacia or rickets in children and osteomalacia in adults. x-linked hypophosphatemic rickets, autosomal-dominant hypophosphatemic rickets, and tumor-induced osteomalacia are the main syndromes involved in the hypophosphatemic rickets. although these conditions exhibit different etiologies, there is a common link among them: increased activity of a phosphaturic factor, being the fibroblast growth factor 23 (fgf-23) the most studied one and to which is attributed a central role in the pathophysiology of the hyperphosphaturic disturbances. activating mutations of fgf-23 and inactivating mutations in the phex gene (a gene on the x chromosome that codes for a zn-metaloendopeptidase proteolytic enzyme which regulates the phosphate) involved in the regulation of fgf-23 have been identified and have been implicated in the pathogenesis of these disturbances. genetic studies tend to show that the phosphorus homeostasis depends on a complex osteo-renal metabolic axis, whose mechanisms of interaction have been poorly understood so far. this paper reviews the current knowledge status concerning the pathophysiology of phosphate metabolism regulation and the pathophysiologic basis of hypophosphatemic rickets. it also analyzes the clinical picture and the therapeutic aspects of these conditions as well.
Atratividade de Atta sexdens rubropilosa por plantas de eucalipto atacadas previamente ou n?o por Thyrinteina arnobia
Oliveira, Hamilton Gomes de;Lacerda, Fabrícia Gon?alves;Marinho, Cidália Gabriela Santos;Della Lucia, Terezinha Maria Castro;
Pesquisa Agropecuária Brasileira , 2004, DOI: 10.1590/S0100-204X2004000300012
Abstract: the induced defense system of plants is activated after the occurrence of damage by a herbivore. the objective of this work was to evaluate whether plants of eucalyptus grandis previously attacked by larvae of thyrinteina arnobia become resistant to cutting by the leaf-cutting ant atta sexdens rubropilosa. there was no significant difference in the lapse of time spent by the workers of this ant before they started cutting plants previously attacked or not. there was significant reduction in the size of leaf fragments cut by the ants. it was concluded that plants previously attacked were less attractive to the leaf cutter due to the activation of their induced defense system.
Encontro de Aedes albopictus no Estado do Pará, Brasil
Segura,Maria de Nazaré de Oliveira; Monteiro,Hamilton Antonio de Oliveira; Lopes,Ernani da Silva; Silva,Orlando Vaz da; Castro,Francisco Corrêa; Vasconcelos,Pedro Fernando da Costa;
Revista de Saúde Pública , 2003, DOI: 10.1590/S0034-89102003000300020
Abstract: it is first reported the detection of aedes (stg) albopictus mosquitoes in state of pará, brazil, in the urban area of medicilandia, a municipality far 90 km from altamira, where 42 adult mosquitoes were baited using human attraction. all mosquitoes were pooled and inoculated into c6/36 and suckling mice in attempts for virus isolation. no virus was isolated. the occurrence of aedes albopictus in urban areas of the amazon region is of concern since dengue and yellow fever viruses are endemic in the amazon and thus there is a potential risk for this mosquito species to become infected with both viruses.
Biological and structure-activity evaluation of chalcone derivatives against bacteria and fungi
Silva, Wender A.;Andrade, Carlos Kleber Z.;Napolitano, Hamilton B.;Vencato, Ivo;Lariucci, Carlito;Castro, Miriam. R. C. de;Camargo, Ademir J.;
Journal of the Brazilian Chemical Society , 2013, DOI: 10.1590/S0103-50532013000100018
Abstract: the present work describes the antibacterial and antifungal activities of several chalcones obtained by a straight claisen-schmidt aldol condensation determined by the minimal inhibitory concentration against different microorganisms (gram-positive and gram-negative bacteria and fungi). solid state crystal structures of seven chalcones were determined by x-ray diffraction (xrd) analysis. chemometric studies were carried out in order to identify a potential structure-activity relationship.
Programa de ensino de facoemulsifica??o CBO/ALCON: resultados do Hospital de Olhos do Paraná
Fischer, Ana Flávia de Castro;Pires, Eduardo Machado Estev?o;Klein, Fernando;Siqueira Bisneto, Otávio;Soriano, Eduardo Sone;Moreira, Hamilton;
Arquivos Brasileiros de Oftalmologia , 2010, DOI: 10.1590/S0004-27492010000600010
Abstract: purpose: to analyze the results obtained with a new phacoemulsification teaching method in the specialization course of hospital de olhos do paraná. methods: a retrospective study evaluated the results of a "reversal" method used in the cbo/alcon teaching program at the hospital de olhos do paraná. the method is based on the student progression through five checkpoints starting from the end of the surgery towards the beginning and analysis of intra- and postoperative complications at each one of the checkpoints. results: of 84 operated eyes, 77 (91.67%) presented final visual acuity of 20/40 or better. among the complications, the main one was the posterior capsular rupture and occurred in 11 (13.09%) of 13 (15.48%) eyes with complications. conclusion: the "reversal" teatching method used in the cbo/alcon teaching program is appropriate to the student, his instructor, as well as to the patient.
Efeito da concentra??o do amido de milho na libera??o de paracetamol de comprimidos
Castro, Ana Dóris de;Vicente, Joice Alessandra;Mour?o, Samanta Cardozo;Bueno, José Hamilton Ferreira;Evangelista, Raul Cesar;Gremi?o, Maria Palmira Daflon;
Revista Brasileira de Ciências Farmacêuticas , 2003, DOI: 10.1590/S1516-93322003000300008
Abstract: this paper describes the influence of maize starch concentration on the physical characteristics and on in vitro release of acetaminophen from compressed tablets. the granulates were analyzed in relation to size distribution and bulk and compacted densities, and the tablets in relation to mean weight, thickness, hardness, friability and disintegration time. the tablets were prepared from granulates made by wet granulation with 10% starch paste in three formulations. although the tablets obtained have presented characteristics in accordance with pharmacopeial limits, the results indicate that variations on starch concentration cause differences on the several physical parameters studied. higher starch concentration probably originates an interaction among the ingredients of the formulations, interfering on the in vitro drug release.this fact demonstrates the importance in optimizing the concentration of the adjutants in a tablet formulation, because, although a short variation in this concentration has no significant effect on disintegration time, the amount of released drug can be substantially modified.
Redu??o da proteína bruta com suplementa??o de aminoácidos em ra??es para alevinos de tambatinga
Alencar Araripe, Maria de Nasaré Bona de;Alencar Araripe, Hamilton Gondim de;Lopes, Jo?o Batista;Castro, Pollyanna Lima de;Braga, Tony Ewerton Amorim;Ferreira, Ant?nio Hosmylton Carvalho;Abreu, Márvio Lob?o Teixeira de;
Revista Brasileira de Zootecnia , 2011, DOI: 10.1590/S1516-35982011000900001
Abstract: this study was developed to evaluate the performance and carcass composition of tambatinga fingerlings, with initial weight of 6.521 ± 0.300 g, fed with isocaloric, isocalcic and isophosphoric diets (40, 37, 34, 31 and 28% of cp). fish were cultivated for forty days in polyethylene tanks, with water recirculation system. fishes were weighed at the beginning and at the end of the trial and the data were used for evaluation of weight gain, feed intake, apparent feed conversion, index of feed conversion, protein intake, specific growth rate and protein efficiency rate. at the beginning and end of the experiment, samples of fishes were selected for analysis of muscle composition, and the results were utilized to assess protein retention efficiency and proportion of protein and ethereal extract at weight gain. among the performance parameters, crude protein levels influenced only protein intake and protein efficiency rate, with linear effect. crude protein amount, proportion protein on weight gain and protein retention efficiency of the tambatinga fingerling's muscle, increased linearly with protein reduction in the diet, whereas ethereal extract and its proportion on weight gain decreased. it was concluded that the diet with 28% of protein can be used for tambatinga fingerlings without affecting performance.
Comparative study of suture and cyanoacrylates in skin closure of rats
Souza, Sandro Cilindro de;Oliveira, Washington Luiz de;Soares, Dario Fernando de Oliveira Santos;Briglia, Carlos Henrique;Athanázio, Paulo Roberto;Cerqueira, Martins Dias de;Guimar?es, Pedro Hamilton;Carreiro, Mário Castro;
Acta Cirurgica Brasileira , 2007, DOI: 10.1590/S0102-86502007000400013
Abstract: purpose: to compare the biocompatibility of ethyl-cyanoacrylate (eca) and octylcyanoacrylate (oca) wound closures to sutures in rat skin. methods: twenty-four male wistar rats were subjected to three incisions which were closed using eca, oca or sutures . rats were divided into four groups which received biopsies on the 3rd, 7th, 14th or 21st post-operative days. necrosis, inflammation, dermatitis, infection, dehiscence, cicatricial enlargement and costs were examined; the histopathology evaluated was epithelialization, deep openings, foreign substance reaction, residues of synthesis material, fibrosis, inflammation, dehiscence and necrosis. results: the tissue adhesives presented the largest dehiscence levels, and eca the lowest cost while the other measures were similar. regarding histopathology, deep openings were more common with oca and granulomas were most frequently obtained with eca. the two tissue adhesives produces less inflammation than the inicial suture from post-operative day 7, while eca and oca cause similar inflammatory reactions. eca did not differ significantly from oca and sutures on other measures. conclusion: eca was well tolerated in this study and did not induce necrosis, allergic reactions or infections, presenting several advantages in relation to oca and sutures, including lower costs and fewer complications.
Trends of Development of International Water Law  [PDF]
Paulo Canelas de Castro
Beijing Law Review (BLR) , 2015, DOI: 10.4236/blr.2015.64025
Abstract: International water law has been witnessing profound changes in the latter twenty years. These changes denote certain cardinal options for new goals and values that the newer international water law is seeking to embrace. Amongst these new goals and values, the ones of environmentalization, humanisation, economicisation stand out as attempts at bringing efficient response to the challenges set by the current global water crisis and the more complex expectations of the international community. They amount to an innovative normative message and even true paradigm-shifts in the understanding of international water law. These trends of development of international water law set this legal field in line with other chapters of contemporary international law and derive in part from the cross-fertilisation of normative ideas and principles between these chapters of international law.
Primeiro registro de Aedes (Stegomyia) albopictus no Estado do Ceará, Brasil
Martins,Víctor Emanuel Pessoa; Martins,Marlos Gomes; Araújo,José Maria Paz de; Silva,Luís Osvaldo Rodrigues; Monteiro,Hamilton Antonio de Oliveira; Castro,Francisco Corrêa; Vasconcelos,Pedro Fernando da Costa; Guedes,Maria Izabel Florindo;
Revista de Saúde Pública , 2006, DOI: 10.1590/S0034-89102006000500027
Abstract: for the first time, the occurrence of aedes (stegomyia) albopictus in an urban area of the city of fortaleza, northeastern, brazil, is reported. from january to july 2005, ovitraps were used to collect eggs from aedes spp., which were kept under laboratory conditions to develop into the adult phase. the resultant mosquitoes were identified and subjected to dengue virus isolation tests. thirteen specimens of aedes albopictus, all females, were identified. no dengue virus was isolated in any of the mosquito pools. even though aedes albopictus has not been incriminated in brazilian dengue outbreaks, the possibility of dengue virus transmission by these mosquitoes cannot be dismissed.
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