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Search Results: 1 - 10 of 33758 matches for " Renato;Costa-Neto "
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Insetos como fontes de alimentos para o homem: Valora??o de recursos considerados repugnantes
Costa-Neto,Eraldo Medeiros;
Interciencia , 2003,
Abstract: entomophagy or the use of insects as food is analyzed by taking into account the nutritive importance that insects can offer to overcome both hunger and malnutrition in many parts of the world. about 1509 species of edible insects have already been recorded in nearly 3000 ethnic groups distributed in more than 120 countries. the largest group of edible insects is comprised of coleopterans (443 species), which is followed by himenopterans (307 species), orthopterans (235 species), and lepidopterans (228 species). studies have shown that the "flesh" of insects contains satisfying amounts of proteins and fats, and they are rich in minerals and vitamins as well. however, the aversion to the edible insects is the reason why a considerable amount of animal protein becomes unavailable since the phenomenon is regarded as "primitive peoples practice". it is necessary to change the ideas we have concerning insects and include them in ordinary meals.
Biotransforma??es de insetos no povoado de Pedra Branca, Estado da Bahia, Brasil
Medeiros Costa-Neto,Eraldo;
Interciencia , 2004,
Abstract: this paper shows the way the inhabitants from the town of pedra branca, located in the state of bahia, northeastern brazil, understand the ontogeny of insects that live in the region. fieldwork was carried out from february to may 2001, by performing open-ended interviews with 34 men and 29 women, whose ages ranged from 22 to 82 years. interviews were carried out based on an ethnoscientific approach. according to the processes of biotransformations that were indicated by the interviewers, the "insects" can be grouped into three categories: insects that originate from plants, insects that originate from other insects and insects that change to other animals. the local processes of biotransformation usually include the "enchanting", in which an insect "enchants" and changes itself into another being that may or not be similar to that from which it comes. such biological transformations have significance in the way people perceive and classify these animals.
Animal-based medicines: biological prospection and the sustainable use of zootherapeutic resources
Costa-Neto, Eraldo M.;
Anais da Academia Brasileira de Ciências , 2005, DOI: 10.1590/S0001-37652005000100004
Abstract: animals have been used as medicinal resources for the treatment and relieve of a myriad of illnesses and diseases in practically every human culture. although considered by many as superstition, the pertinence of traditional medicine based on animals cannot be denied since they have been methodically tested by pharmaceutical companies as sources of drugs to the modern medical science. the phenomenon of zootherapy represents a strong evidence of the medicinal use of animal resources. indeed, drug companies and agribusiness firms have been evaluating animals for decades without paying anything to the countries from where these genetic resources are found. the use of animals' body parts as folk medicines is relevant because it implies additional pressure over critical wild populations. it is argued that many animal species have been overexploited as sources of medicines for the traditional trade. additionally, animal populations have become depleted or endangered as a result of their use as experimental subjects or animal models. research on zootherapy should be compatible with the welfare of the medicinal animals, and the use of their by-products should be done in a sustainable way. it is discussed that sustainability is now required as the guiding principle for biological conservation.
Restri??es e preferências alimentares em comunidades de pescadores do município de Conde, Estado da Bahia, Brasil
COSTA-NETO, Eraldo Medeiros;
Revista de Nutri??o , 2000, DOI: 10.1590/S1415-52732000000200006
Abstract: fishing resources avoidances and preferences of fishermen from the county of conde, in the north of the state of bahia, are analyzed. data were obtained through open-ended and semistructured interviews performed with 114 informants from five communities. fish, mollusks, crustaceans, cetaceans and sea turtles are available resources for the fishermen. they perceive remarkable aspects of these animals when considering them as edible items. "leather" fish such as rays and sharks are the most avoided during illnesses, and "white" fish such as snooks are the most preferred species. many of these resources are also used in the local folk medicine. fishermen's feeding behavior should be taken into account for the development planning and environmental assessment studies, as well as the management, conservation and monitoring procedures of fishing resources.
Restri es e preferências alimentares em comunidades de pescadores do município de Conde, Estado da Bahia, Brasil
COSTA-NETO Eraldo Medeiros
Revista de Nutri??o , 2000,
Abstract: Restri es e preferências de recursos pesqueiros por pescadores do município de Conde, Norte do estado da Bahia, s o analisadas. Dados foram obtidos através de entrevistas abertas e semiestruturadas realizadas com 114 informantes de cinco comunidades. Peixes, moluscos, crustáceos, cetáceos e tartarugas marinhas s o recursos disponíveis aos pescadores, que percebem aspectos marcantes desses animais no momento de considerá-los itens comestíveis. Peixes de "couro", como arraias e ca es, s o os mais evitados durante enfermidades, enquanto peixes "brancos", como os robalos, s o as espécies mais preferidas. Muitos desses recursos s o também usados na medicina popular local. O comportamento alimentar dos pescadores deveria ser levado em considera o no planejamento ambiental, em estudos de impacto ambiental e no manejo, conserva o e monitoramento dos recursos pesqueiros.
Animal-based medicines: biological prospection and the sustainable use of zootherapeutic resources
Costa-Neto Eraldo M.
Anais da Academia Brasileira de Ciências , 2005,
Abstract: Animals have been used as medicinal resources for the treatment and relieve of a myriad of illnesses and diseases in practically every human culture. Although considered by many as superstition, the pertinence of traditional medicine based on animals cannot be denied since they have been methodically tested by pharmaceutical companies as sources of drugs to the modern medical science. The phenomenon of zootherapy represents a strong evidence of the medicinal use of animal resources. Indeed, drug companies and agribusiness firms have been evaluating animals for decades without paying anything to the countries from where these genetic resources are found. The use of animals' body parts as folk medicines is relevant because it implies additional pressure over critical wild populations. It is argued that many animal species have been overexploited as sources of medicines for the traditional trade. Additionally, animal populations have become depleted or endangered as a result of their use as experimental subjects or animal models. Research on zootherapy should be compatible with the welfare of the medicinal animals, and the use of their by-products should be done in a sustainable way. It is discussed that sustainability is now required as the guiding principle for biological conservation.
New bioactive metabolites produced by Phomopsis cassiae, an endophytic fungus in Cassia spectabilis
Silva, Geraldo H.;Teles, Helder L.;Trevisan, Henrique C.;Bolzani, Vanderlan da S.;Young, Maria C. M.;Pfenning, Ludwig H.;Eberlin, Marcos N.;Haddad, Renato;Costa-Neto, Claudio M.;Araújo, ?ngela R.;
Journal of the Brazilian Chemical Society , 2005, DOI: 10.1590/S0103-50532005000800029
Abstract: two new metabolites, ethyl 2,4-dihydroxy-5,6-dimethylbenzoate (1) and phomopsilactone (2) were isolated from phomopsis cassiae, an endophytic fungus in cassia spectabilis. their structures were elucidated by 1d and 2d nmr, ms and ir spectral data. compounds 1 and 2 displayed strong antifungal activity against the phytopatogenic fungi cladosporium cladosporioides and c. sphaerospermum, as well as cytotoxicity against human cervical tumor cell line (hela), in in vitro assays.
Citocalasinas produzidas por Xylaria sp., um fungo endofítico de Piper aduncum (piperaceae)
Silva, Geraldo H.;Oliveira, Camila M. de;Teles, Helder L.;Bolzani, Vanderlan da S.;Araujo, Angela R.;Pfenning, Ludwig H.;Young, Maria Claudia M.;Costa-Neto, Claudio M.;Haddad, Renato;Eberlin, Marcos N.;
Química Nova , 2010, DOI: 10.1590/S0100-40422010001000006
Abstract: a chemical study on the etoac extract produced by xylaria sp., an endophytic fungus from piper aduncum, resulted in the isolation of a new cytochalasin 1, along with five known 19,20-epoxycytochalasin d (2), c (3), n (4), q (5), and r (6). the 1-6 were evaluated against the fungi c. cladosporioides and c. sphaerospermum and only 5 showed weak activity. the cytotoxicity in vitro against hela and cho cells lines were investigated and the cytochalasins 2-4, and 6 showed a strong activity against hela. the dnadamaging activity of 1-6 were also investigated against mutant strains of s. cerevisiae.
Role of endothelium on the abnormal Angiotensin-mediated vascular functions in epileptic rats  [PDF]
Carolina Restini, Rosana Reis, Claudio Costa-Neto, Norberto Garcia-Cairasco, José Cortes-de-Oliveira, Lusiane Bendhack
Journal of Biophysical Chemistry (JBPC) , 2012, DOI: 10.4236/jbpc.2012.32019
Abstract: Epidemiological studies have found that the risk for cardiovascular disease is increased in patients with epilepsy. The Renin Angiontensin System (RAS), an important player in vascular tone control, is also involved in many neurological disorders, including seizures and epilepsy. Although it has been reported that Angiotensin II (Ang II) release and Angiotensin receptors expression are altered in many cerebral areas in patients/animal models with neurological disorders, there are no data on the vascular function. We evaluated Ang I and Ang II-mediated vascular responses and to correlate their contractile responses to the pres- ence of endothelium and the protein levels of components of the RAS (AT1, AT2, Mas and ACE) in aorta isolated from genetically epileptic rats (WAR strain). The major finding was that the vascular contractile response induced by Ang I and Ang II is endothelium-dependent. Ang II induced contractions in aortas from Wistar rats either with intact endothelium (E+) (1.16 ± 0.04 g, n = 6) and endothelium-denuded (E-) (1.24 ± 0.04 g, n = 6). Maximum contractile response (ME) induced by Ang I was lower in Wistar E+ (0.45 ± 0.03 g, n = 6) compared with Wistar E- (1.13 ± 0.08 g, n = 6). Ang I and Ang II failed to induce contraction in WAR E+, whereas the ME induced by Ang I in WAR E- was lower (0.52 ± 0.04 g, n = 11) than in the Wistar. ME induced by Ang II in aortas from WAR was also lower (0.40 ± 0.03 g, n = 11) compared with Wistar. AT1 receptor expression in both E+ WAR and Wistar was lower than in both E- WAR and Wistar. AT2 and Mas receptor expression was higher in Wistar E- and E+ as compared to WAR E- and E+. ACE expression was higher in both E+ WAR and Wistar, but it was lower in both E- WAR and Wistar. Endothelium impairs the contractile response induced by Angiotensin in WAR, suggesting that endothelial relaxing factors play important role on the aorta contraction.
The ethnocategory ''insect'' in the conception of the inhabitants of Tapera County, S?o Gon?alo dos Campos, Bahia, Brazil
Costa-Neto, Eraldo M.;Magalh?es, Henrique F.;
Anais da Academia Brasileira de Ciências , 2007, DOI: 10.1590/S0001-37652007000200007
Abstract: this article deals with the construction of the "insect" ethnozoological dominium by the inhabitants of tapera county, which is located in the municipality of s?o gon?alo dos campos, bahia state. data were obtained from march to may 2005 through open-ended interviews carried out with 23 men and 8 women, whose ages ranged from 6 to 66 years old. interviewees were asked about how they perceived and defined the animals considered as "insects", which types they knew, and if they used them as food resource. most of the interviews were tape-recorded, and semi-literal transcriptions are kept at the ethnobiology laboratoty of the universidade estadual de feira de santana. considering the ethnozoological classification system of the inhabitants of tapera, the term "insect" is a broad semantic category that brings together animals of different and not systematically related taxonomic groups. apparently, these animals are culturally perceived and categorized as "insects" because they are usually considered as noxious, disgusting, and disease carrier creatures. true insects can be excluded from this ethnocategory due to the perception people have that such animals do not cause "injuries" or because they are useful. perceptions toward these animals imply ambiguous behavior and feelings, which range from more positive attitudes (conservative) to more negative (destructive).
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