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Search Results: 1 - 10 of 193504 matches for " Ricardo de Carvalho;Cavalcanti "
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The Use of Erythropoietin in Liver Regeneration in Pigs after Partial Hepatectomy  [PDF]
Henrique de Aguiar Wiederkehr, Caroline Arag?o de Carvalho, Julio Cesar Wiederkehr, Ricardo Ribeiro Gama, Eros Luiz de Sousa, Teresa Cristina Cavalcanti, Taíse Fuchs, Barbara de Aguiar Wiederkehr, Lucas Mansano Sarquis
Surgical Science (SS) , 2015, DOI: 10.4236/ss.2015.611074
Abstract: A partial hepatectomy is a surgical procedure performed during the living-donor liver transplantation and sometimes the only option for patients with hepatocarcinoma. However the remnant liver after the hepatectomy is still a major concern. Therefore, the process of liver regeneration has been a constant theme of study in order to optimize this process. Erythropoietin, a hormone produced by the kidney and involved in protecting organs like heart, liver and kidney itself against injuries can be one of these factors that could accelerate the liver regeneration. This study aims to observe if erythropoietin can accelerate the process of liver regeneration after partial hepatectomy in pigs. Methods: 8 pigs were classified into 2 groups of 4 pigs each: the control group and the test group. The animals in the first group underwent an application of saline solution subcutaneous on the day before the hepatectomy. Instead of saline solution, the test groups received a subcutaneous injection of 200 UI/lg of recombinant erythropoietin also on the day before the surgical procedure. After 7 days since the hepatectomy, in each animal the liver was biopsied in two regions, one next to the hepatectomy section and other far from it. The liver regeneration was analyzed using Ki-67. Results: Pigs from control group presented the following results: Control pig I: 30% of regeneration in the hepatectomy section and 10% in the region far from it; control pig II 24% and 4%; control pig III 27% and 7%. The test group presented no significant liver regeneration since Ki-67 could not identify cell proliferation in neither the biopsied areas. Conclusion: Since the number of pigs was not statistically significant, we could not conclude any further hypothesis. We strong believe that enhancing the number of pigs and testing different doses, we will be able to reach further conclusions.
Tratamento cirúrgico da coarcta??o da aorta: experiência de três décadas
Oliveira, Alline de Souza Alves;Carneiro, Breno Barbosa de Siqueira;Lima, Ricardo de Carvalho;Cavalcanti, Catarina;Villachan, Roberta;Arraes, Nadja;Lins, Ricardo de Albuquerque;Escobar, Mozart;
Revista Brasileira de Cirurgia Cardiovascular , 2007, DOI: 10.1590/S0102-76382007000300008
Abstract: objective:to make a 30-year review of the immediate results of coarctation of the aorta (coao) operation, between 1974 and 2004. all the patients underwent coao whether in isolation or associated with other congenital defects. methods: the following data was investigated: age at the time of surgery, gender, associated lesions, type of surgical technique, and immediate surgical outcome, particularly focusing the presence of systemic arterial hypertension. results: one hundred and four patients underwent coao. of the 104 enrolled patients, 75 (72%) were pediatric patients and 29 (28%) adults patients. in the pediatric group, 23 (22%) were considered neonates, 17 (16%) infants, and 35 (34%) children. the associated defects were present in 66 (63.5%) patients, 54 (51.9%) in the pediatric group and 12 (11.3%) in the adult group. seven (6.7%) deaths were observed in the immediate postoperative period. among the various surgical techniques employed, aortoplasty was used in 80 patients (76.9%); end-to-end anastomosis in 15 (14.4%); teles technique in seven (6.7%), waldhausen technique in one (1%), and it was not possible to identify the technique in one patient (1%). conclusions: despite the limitations of the present study, it may be noted that the results were good with the corrective surgery being performed safely and with a low mortality rate. medium- and long-term follow-up was impaired by the well-known structural deficiencies in brazil.
Use of MAC-ELISA for evaluation of yellow fever vaccination
Nogueira, Rita M. Ribeiro;Schatzmayr, Hermann G.;Miagostovich, Marize P.;Cavalcanti, Silvia M. B.;Carvalho, Ricardo de;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1992, DOI: 10.1590/S0036-46651992000500012
Abstract: an evaluation of the igm antibody immune response against yellow fever using strain 17d was carried out by mac-elisa and prnt. the results showed an agreement of 97% between both tests and the authors conclude that mac-elisa can be used as a specific and sensitive asssay to replace the prnt for detecting yellow fever antibodies in human sera, after vaccination programs.
Atividades de quitinase e beta-1,3-glucanase após elicia??o das defesas do tomateiro contra a mancha-bacteriana
Cavalcanti, Fábio Rossi;Resende, Mário Lúcio Vilela de;Pereira, Ricardo Borges;Costa, Jo?o de Cássia do Bonfim;Carvalho, Cristina Paiva da Silveira;
Pesquisa Agropecuária Brasileira , 2006, DOI: 10.1590/S0100-204X2006001200006
Abstract: the objective of this work was to assess the influence of foliar application of resistance inducers and the activation of plant pathogenesis-related (pr) proteins, chitinases and beta-1,3-glucanases, against xanthomonas campestris pv. vesicatoria, and evaluate the potential of these elicitors on the reduction of bacterial leaf spot. tomato plants of the cultivar santa cruz kada were sprayed with: acibenzolar-s-methyl (0.2 g l-1 asm); ecolife, a biological formulation based on citric biomass (5 ml l-1); chitosan suspension from crinipellis perniciosa mycelium (mcp; 200 g l-1); an aqueous extract from branches of lobeira (solanum lycocarpum) infected with c. perniciosa (vla; 300 g l-1). plants were challenged with a virulent bacterial strain four days after spraying. plants sprayed with the tested substances showed reduction of bacterial spot. asm provided 49.3% protection, and was equal to mcp and ecolife, and superior to vla. vla treatment did not differ statistically from mcp and ecolife. increases of beta-1,3-glucanase and chitinase activities were observed in treated plants at the first hour after spraying.
La displasia cemento ósea florida y su diagnóstico diferencial
Carvalho de Melo,Allan Ulisses; Ferreira Ribeiro,Cyntia; de Santana Santos,Thiago; Barreto Aguiar,Luciana; Azevedo Rocha,Betsabé; Almeida Júnior,Paulo; Cavalcanti Albuquerque Júnior,Ricardo Luiz;
Revista Cubana de Estomatolog?-a , 2011,
Abstract: the benign fibrous-bony lesions are a diverse group of diseases with common features: replacement of normal bone by tissue composed of collagen and fibroblasts, with variable amounts of a mineral substance that could be bone, cement or both. these lesions include the fibrous dysplasia, the periapical cement-bony dysplasia, focal or florid, familiar giant cementoma and ossifying fibroma (cement-ossifying). osteomyelitis is an acute or chronic inflammatory process of medullar or cortical spaces of bone extending beyond the onset site of development. diffuse sclerosing osteomyelitis involves to adults mainly the mandible and radiographically is a diffuse radiopaque lesion adjacent to teeth and could be multifocal. the aim of present paper is to describe an uncommon case of fibrous-bony lesion also diagnosed with maxillary osteomyelitis. we conclude that the above mentioned lesions are very similar regarding its clinical, radiographic and histological features. thus, it is fundamental the combined analysis of these informations to obtain a definite diagnosis.
Estudo comparativo entre cirurgia de revasculariza??o miocárdica com e sem circula??o extracorpórea em mulheres
, Michel Pompeu Barros de Oliveira;Lima, Leonardo Pontual;Rueda, Fábio Gon?alves de;Escobar, Rodrigo Renda de;Cavalcanti, Paulo Ernando Ferraz;Thé, Emmanuel Callou da Silva;Escobar, Mozart Augusto Soares de;Lima, Ricardo de Carvalho;
Revista Brasileira de Cirurgia Cardiovascular , 2010, DOI: 10.1590/S0102-76382010000200018
Abstract: background: it has been well documented that women have higher morbidity and mortality rates than men following coronary artery bypass graft (cabg) surgery. in view of this evidence, it is necessary to know if there is benefit to off-pump cabg surgery in women in comparison to on-pump cabg. objectives: compare outcomes between off-pump cabg and on-pump cabg in women. methods: retrospective study. our investigation analyzes comparatively clinical profile, thirteen procedure complications and mortality of a population of 941 consecutive women undergoing cabg surgery (549 off-pump and 392 on-pump) at two hospitals for the period january 2000 to december 2005. results: mortality rate for women undergoing off-pump cabg surgery is lower than for women undergoing on-pump surgery, however, not statistically significant (3.1% vs 5.3%; p=0.134). the complication rates analyzed (hemorrhagic shock, neurologic, respiratory, acute renal failure, adult respiratory distress syndrome, septicemia, pneumonia, atrial fibrillation) were lower (significant statistically difference) for women off-pump than women on-pump, with the exception of low cardiac output and wound infection. conclusions: evidence suggests that off-pump cabg surgery may be better for women than on-pump cabg surgery because it appears to reduce morbimortality rates. ten of 13 complications investigated demonstrated an advantage for women undergoing off-pump surgery relative to those receiving on-pump surgery.
Mediastinite no pós-operatório de cirurgia cardiovascular: análise de 1038 cirurgias consecutivas
, Michel Pompeu Barros de Oliveira;Silva, Débora Oliveira;Lima, érika Nibbering de Souza;Lima, Ricardo de Carvalho;Silva, Frederico Pires Vasconcelos;Rueda, Fábio Gon?alves de;Escobar, Rodrigo Renda de;Cavalcanti, Paulo Ernando Ferraz;
Revista Brasileira de Cirurgia Cardiovascular , 2010, DOI: 10.1590/S0102-76382010000100008
Abstract: objective: to report the incidence of mediastinitis in cardiovascular surgery postoperation. methods: the records of all 1038 patients who underwent cardiovascular surgical procedures between may/2007 and june/2009 were reviewed. all operations were performed in division of cardiovascular surgery of pronto socorro cardiológico de pernambuco - procape. results: the complication occurred within, on average, 13 days after operation, in total of 25 (2.4%), eight (32%) deaths occurred. several risk factors mediastinitis were identified: 56% diabetes, 56% smokers, 20% obeses, 16% with chronic obstructive pulmonary disease and 8% of chronic renal failure. mediastinitis were reported in 21 (84%) cases of patients submitted to coronary artery bypass grafting, being associated to major risk of infection development (ic 3.448.30, p=0.0001). high rates of complications were observed: respiratory insufficiency (44%), stroke (16%), cardiogenic shock (12%), acute renal failure (28%), pulmonary infection (36%), multiple organs failure (16%) and esternal deiscence (48%). bacterial cultures of exudates were positive in 84% of patients; staphylococcus aureus was the most responsible pathogen (28.8%). conclusion: mediastinitis stays a serious surgical complication and difficult management in cardiovascular surgery postoperation. the disease stays with low incidence, but still with high lethality. coronary bypass was associated to major risk of infection development.
Trypanosoma cruzi Infection in Neotropical Wild Carnivores (Mammalia: Carnivora): At the Top of the T. cruzi Transmission Chain
Fabiana Lopes Rocha, André Luiz Rodrigues Roque, Juliane Saab de Lima, Carolina Carvalho Cheida, Frederico Gemesio Lemos, Fernanda Cavalcanti de Azevedo, Ricardo Corassa Arrais, Daniele Bilac, Heitor Miraglia Herrera, Guilherme Mour?o, Ana Maria Jansen
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0067463
Abstract: Little is known on the role played by Neotropical wild carnivores in the Trypanosoma cruzi transmission cycles. We investigated T. cruzi infection in wild carnivores from three sites in Brazil through parasitological and serological tests. The seven carnivore species examined were infected by T. cruzi, but high parasitemias detectable by hemoculture were found only in two Procyonidae species. Genotyping by Mini-exon gene, PCR-RFLP (1f8/Akw21I) and kDNA genomic targets revealed that the raccoon (Procyon cancrivorus) harbored TcI and the coatis (Nasua nasua) harbored TcI, TcII, TcIII-IV and Trypanosoma rangeli, in single and mixed infections, besides four T. cruzi isolates that displayed odd band patterns in the Mini-exon assay. These findings corroborate the coati can be a bioaccumulator of T. cruzi Discrete Typing Units (DTU) and may act as a transmission hub, a connection point joining sylvatic transmission cycles within terrestrial and arboreal mammals and vectors. Also, the odd band patterns observed in coatis’ isolates reinforce that T. cruzi diversity might be much higher than currently acknowledged. Additionally, we assembled our data with T. cruzi infection on Neotropical carnivores’ literature records to provide a comprehensive analysis of the infection patterns among distinct carnivore species, especially considering their ecological traits and phylogeny. Altogether, fifteen Neotropical carnivore species were found naturally infected by T. cruzi. Species diet was associated with T. cruzi infection rates, supporting the hypothesis that predator-prey links are important mechanisms for T. cruzi maintenance and dispersion in the wild. Distinct T. cruzi infection patterns across carnivore species and study sites were notable. Musteloidea species consistently exhibit high parasitemias in different studies which indicate their high infectivity potential. Mesocarnivores that feed on both invertebrates and mammals, including the coati, a host that can be bioaccumulator of T. cruzi DTU’s, seem to take place at the top of the T. cruzi transmission chain.
Jo?o Cabral de Melo Neto e a tradi??o do romance de 30
Carvalho, Ricardo Souza de;
Estudos Avan?ados , 2009, DOI: 10.1590/S0103-40142009000300030
Abstract: this article analyses the review of the northwest brazil novel tradition in thirties in the joao cabral de melo neto's poetry and his relationship with the josé de américo de almeida, graciliano ramos and josé lins do rego's works.
Influência das altera es dopplervelocimétricas das artérias uterinas sobre as taxas de apoptose em placentas de gestantes primigestas
Cavalli Ricardo de Carvalho
Revista Brasileira de Ginecologia e Obstetrícia , 2003,
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