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Search Results: 1 - 10 of 546662 matches for " Nágila M.;Siqueira "
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Nymph developmental time and survivorship, adult longevity, reproduction and body weight of Dichelops melacanthus (Dallas) feeding on natural and artificial diets
Panizzi, Ant?nio R.;Duo, Leandro J. S.;Bortolato, Nágila M.;Siqueira, Fábio;
Revista Brasileira de Entomologia , 2007, DOI: 10.1590/S0085-56262007000400013
Abstract: the biology of nymphs and adults of the neotropical pentatomid, dichelops melacanthus (dallas), feeding on the natural foods, soybean, glycine max (l.) merrill immature pods, and corn, zea mays l. immature seeds, and on an artificial dry diet, was studied in the laboratory. nymph developmental time was shorter on the natural foods (ca. 21-22 days) than on the artificial diet (28 days), and most nymphs reached adulthood on the food plants (55% on soybean and 73% on corn) than on the artificial diet (40%). fresh body weight at adult emergence was similar and higher for females raised as nymphs on the natural foods, compared to females from nymphs raised on the artificial diet; for males, weights were similar on all foods. mean (female and male) survivorship up to day 20, decreased from 55% on soybean to 40% on corn, down to 0% on the artificial diet. total longevity for females was higher on soybean, while for males was similar on all foods. about three times more females oviposited on soybean than on corn, but fecundity/female was similar on both foods. on the artificial diet, only one out of 30 females oviposited. fresh body weight of adults increased significantly during the first week of adult life, and at the end of the 3rd week, weight gain was similar on all foods.
Pseudobloqueo de conducción en vasculitis aislada del sistema nervioso periférico
Pabón,R.M.; Gila,L.; Urriza,J.; Imirizaldu,L.; Arrechea,M.; Lacruz,F.;
Anales del Sistema Sanitario de Navarra , 2009, DOI: 10.4321/S1137-66272009000300015
Abstract: introduction. nonsystemic vasculitic neuropathy (nsvn) is an inflammatory disorder of the vasa nervorum which usually is expressed as a mononeuritis multiplex. we present a patient with nsvn with histological confirmination focused on the neurophysiological findings at the early stages. case report. a 36 years-old woman presented with paresthesia and weakness in her right hand followed by left footdrop. the first neurophysiologic examination showed low amplitude of the right median nerve (rmn) cmap with proximal stimulation. a second examination showed signs of axonal damage in several nerves, including the rmn. conclusions. the acute ischemic damage of a nerve can give a pattern of conduction block in the electroneurographic study as in the rmn of the presented case. this phenomenon is referred as "pseudo-conduction block", since it is transient and evolves towards a definite pattern of axonal neuropathy. when a vasculitic neuropathy is suspected, repeated neurophysiologic studies are necessary in order to ensure a proper (appropriate) characterization of the lesional patterns.
Ecological parameters of the endohelminths in relation to size and sex of Prochilodus argenteus (Actinopterygii: Prochilodontidae) from the Upper S?o Francisco River, Minas Gerais, Brazil
Monteiro, Cassandra M.;Santos, Michelle D.;Zuchi, Nágila A.;Brasil-Sato, Marilia C.;
Zoologia (Curitiba) , 2009, DOI: 10.1590/S1984-46702009000400021
Abstract: this research aimed to investigate the ecological indexes of the helminths of the digestive system and coelom of prochilodus argenteus spix & agassiz, 1829. a total of 150 specimens (53 males and 97 females) taken from the upper reaches of the s?o francisco river in the municipality of três marias (18o12'32"s, 45o15'41"w), state of minas gerais, brazil, were examined. the specimens were collected in july, 2003 and january, 2004. ninety-eight fish (65.3%) were infected by at least one species of helminth. five helminth species were found: one digenean, saccocoelioides nanii szidat, 1954; two eucestoda, valipora sp., and one undetermined metacestode; one nematode, spinitectus asperus travassos, artigas & pereira, 1928; and one acanthocephalan, neoechinorhynchus prochilodorum nickol & thatcher, 1971. the sex of the host did not influence parasite indexes. the total length of the hosts influenced the abundance of s. nanii (rs = -0.21, p = 0.01) and the prevalence of the metacestode (r = -0.91, p = 0.01). saccocoelioides nanii was the dominant species in the parasite fauna of p. argenteus. saccocoelioides nanii, valipora sp., s. asperus and n. prochilodorum are reported here for the first time in p. argenteus and their known distribution is expanded to the s?o francisco river.
Pseudobloqueo de conducción en vasculitis aislada del sistema nervioso periférico Pseudo-conduction block in nonsystemic vasculitic neuropath
R.M. Pabón,L. Gila,J. Urriza,L. Imirizaldu
Anales del Sistema Sanitario de Navarra , 2009,
Abstract: Fundamento. La vasculitis aislada del sistema nervioso periférico (VASNP) afecta selectivamente a los vasa nervorum, expresándose generalmente como una mononeuropatía múltiple. Presentamos un caso de VASNP confirmado histológicamente, destacando los hallazgos neurofisiológicos en fase aguda. Observación clínica. Mujer de 36 a os con parestesias y debilidad en mano derecha seguidas de paresia para la dorsiflexión del pie izquierdo. El primer estudio neurofisiológico mostraba amplitud reducida del potencial motor del mediano derecho con estímulos proximales. Un segundo estudio mostraba signos de lesión axonal en varios nervios, incluyendo el mediano derecho. Conclusiones. La lesión isquémica aguda de un nervio puede dar lugar a un patrón electroneurográfico de bloqueo de conducción, como en el mediano derecho del caso descrito. Este fenómeno es conocido como "pseudobloqueo", dado su carácter transitorio, con evolución a un patrón de neuropatía axonal. La sospecha de VASNP requiere estudios neurofisiológicos seriados para una correcta tipificación de los patrones lesionales. Introduction. Nonsystemic vasculitic neuropathy (NSVN) is an inflammatory disorder of the vasa nervorum which usually is expressed as a mononeuritis multiplex. We present a patient with NSVN with histological confirmination focused on the neurophysiological findings at the early stages. Case report. A 36 years-old woman presented with paresthesia and weakness in her right hand followed by left footdrop. The first neurophysiologic examination showed low amplitude of the right median nerve (RMN) CMAP with proximal stimulation. A second examination showed signs of axonal damage in several nerves, including the RMN. Conclusions. The acute ischemic damage of a nerve can give a pattern of conduction block in the electroneurographic study as in the RMN of the presented case. This phenomenon is referred as "pseudo-conduction block", since it is transient and evolves towards a definite pattern of axonal neuropathy. When a vasculitic neuropathy is suspected, repeated neurophysiologic studies are necessary in order to ensure a proper (appropriate) characterization of the lesional patterns.
Vaivém das marés: o dia a dia dos trabalhadores catraieiros no porto de Fortaleza (1903-1904)
Nágila Maia Morais
Revista Mundos do Trabalho , 2010, DOI: 10.5007/1984-9222.2010v2n3p60
Abstract: http://dx.doi.org/10.5007/1984-9222.2010v2n3p60 O presente artigo busca analisar o dia a dia de trabalho dos catraieiros no Porto de Fortaleza, em 1903-1904, depois de uma greve e da repress o aos manifestantes. Estes trabalhadores eram responsáveis por realizar o servi o de carga e descarga dos navios em pequenas embarca es, denominadas catraias. As rela es que os catraieiros mantinham com os contratadores, homens ligados às grandes empresas comerciais, os quais contratavam m o de obra de maneira avulsa, ser o abordadas mediante a constata o de como se constituíam as rela es socioculturais de trabalho, bem como as disputas econ micas que as permeavam. A partir destas, procura-se compreender o cotidiano dos trabalhadores catraieiros, as formas e os valores do pagamento, para que se trilhe um caminho que conduza à compreens o das a es cotidianas desses homens no trato com o trabalho. Para tanto, foram utilizados como fonte o Jornal “Unitário”, o “Jornal do Ceará” e a documenta o comercial da Casa Boris.
Assessment of PCR in the detection of Leishmania spp in experimentally infected individual phlebotomine sandflies (Diptera: Psychodidae: Phlebotominae)
MICHALSKY érika M.,FORTES-DIAS Consuelo L.,PIMENTA Paulo F.P.,SECUNDINO Nágila F.C.
Revista do Instituto de Medicina Tropical de S?o Paulo , 2002,
Abstract: DNA amplification by the polymerase chain reaction (PCR) was applied in the investigation of the presence of Leishmania (Kinetoplastida: Trypanosomatidae) parasites in single phlebotomine sandflies. Three phlebotomine/parasite pairs were used: Lutzomyia longipalpis/Leishmania chagasi, Lutzomyia migonei/Leishmania amazonensis and Lutzomyia migonei/Leishmania braziliensis, all of them incriminated in the transmission of visceral or cutaneous leishmaniasis. DNA extraction was performed with whole insects, with no need of previous digestive tract dissection or pooling specimens. The presence of either mouse blood in the digestive tract of the sandflies or the digestive tract itself did not interfere in the PCR. Infection by as few as 10 Leishmania sp. per individual were sufficient for DNA amplification with genus-specific primers. Using primers for L. braziliensis and L. mexicana complexes, respectively, it was possible to discriminate between L. braziliensis and L. amazonensis in experimentally infected vectors (L. migonei).
Hepatitis vírica aguda
J. Salmerón,A. Gila
Revista Espa?ola de Enfermedades Digestivas , 2005,
Abstract:
Analgesic Activity of a Glucan Polysaccharide Isolated from Agaricus blazei Murill
Maria Le?nia C. Gonzaga,Thiago M. F. Menezes,José R. R. de Souza,Nágila M. P. S. Ricardo,Ana L. P. Freitas,Sandra de A. Soares
International Journal of Carbohydrate Chemistry , 2013, DOI: 10.1155/2013/846565
Abstract: A water soluble polysaccharide and its selective precipitated fractions (F1, F2, and F3) were isolated from hot water extract of fruiting bodies of Agaricus blazei Murril known as Agaricus brasiliensis to evaluate the analgesic activity of the materials in Swiss mice. The isolated material and its fractions were characterized by two-dimensional COSY and HMQC spectra as β-(1→6)-α-(1→4)-glucan-bound-protein polysaccharide constituted mainly by β-(1→6) glucan. The glucan-protein polysaccharide and its fractions were analyzed in relation to the protein, carbohydrate, and mineral elements contents. The analysis of the glucan-protein complex revealed a total carbohydrate content of 36.95% and protein conjugated content of 17.24%. The mineral elements found in larger proportion were K, Na, Ca, P, and Zn. The analgesic activity bioassay of the β-(1→6)-α-(1→4)-glucan bound-protein polysaccharide and its fractions in Swiss mice indicated a significant effect. 1. Introduction Several species of mushrooms have presented interesting biological activities. Yim et al. [1] showed that Pleurotus porrigens mushroom was found to have antioxidant activities by several assays methodologies such as DPPH, ABTS, FRAP, and TPC. Polysaccharides isolated from mushrooms have been shown to be effective inducers of NO synthesis in macrophages [2, 3]. Carbonero et al. studied a β-glucan from Pleurotus sajor-caju that activated RAW 264.7 macrophages and induced synthesis of NO and of the proinflammatory cytokines TNF-α and IL-1β, suggesting that the β-glucan of P. sajor-caju has an immunostimulatory effect [4]. Recently, Suseem et al. have reported potent analgesic activity of Pleurotus eous mushroom extracts in Swiss mice, which were mediated via peripheral and central inhibitory mechanisms [5]. The mushroom Agaricus blazei Murill is a fungus species from the family Basidiomycetes. It occurs naturally in the Atlantic Forest in the mountains of S?o Paulo state, southeast Brazil. The fruit body is appreciated not only for its taste and texture, but also for its nutritional characteristics [6]. Agaricus presents a composition rich in nutrients and poor in calories and fats [6]. Some interesting activities have been observed for Agaricus blazei. It has been shown to reduce the level of blood cholesterol, protecting against coronary diseases [7], and to reduce the level of glucose in the blood [8]. Furthermore, it presents significant contents of proteins, minerals, and fibers such as chitin [6]. The media composition of the dried fruit body contains 35–45% proteins and 38–48%
Differential Midgut Attachment of Leishmania (Viannia) braziliensis in the Sand Flies Lutzomyia (Nyssomyia) whitmani and Lutzomyia (Nyssomyia) intermedia
Rodrigo P. Soares,Carina Margonari,Nágila C. Secundino,Maria E. Macêdo,Simone M. da Costa,Elizabeth F. Rangel,Paulo F. Pimenta,Salvatore J. Turco
Journal of Biomedicine and Biotechnology , 2010, DOI: 10.1155/2010/439174
Abstract: The interaction between Leishmania and sand flies has been demonstrated in many Old and New World species. Besides the morphological differentiation from procyclic to infective metacyclic promastigotes, the parasite undergoes biochemical transformations in its major surface lipophosphoglycan (LPG). An upregulation of -glucose residues was previously shown in the LPG repeat units from procyclic to metacyclic phase in Leishmania (Viannia) braziliensis, which has not been reported in any Leishmania species. LPG has been implicated as an adhesion molecule that mediates the interaction with the midgut epithelium of the sand fly in the Subgenus Leishmania. These adaptations were explored for the first time in a species from the Subgenus Viannia, L. (V.) braziliensis with its natural vectors Lutzomyia (Nyssomyia) intermedia and Lutzomyia (Nyssomyia) whitmani. Using two in vitro binding techniques, phosphoglycans (PGs) derived from procyclic and metacyclic parasites were able to bind to the insect midgut and inhibit L. braziliensis attachment. Interestingly, L. braziliensis procyclic parasite attachment was ~11-fold greater in the midgut of L. whitmani than in L. intermedia. The epidemiological relevance of L. whitmani as a vector of American Cutaneous Leishmaniasis (ACL) in Brazil is discussed.
Antioxidant activity of cashew nut shell liquid (CNSL) derivatives on the thermal oxidation of synthetic cis-1,4-polyisoprene
Rodrigues, Francisco Helder A.;Feitosa, Judith P. A.;Ricardo, Nágila M. P. S.;Fran?a, Francisco Célio F. de;Carioca, José Oswaldo B.;
Journal of the Brazilian Chemical Society , 2006, DOI: 10.1590/S0103-50532006000200008
Abstract: cnsl is a mixture of meta-alkylphenols with variable degree of unsaturation attached to the benzene ring. the kinetic study of the thermal degradation at 140 °c of synthetic cis-1,4-polyisoprene film, in the presence of technical cnsl and some derivatives (cardanol, hydrogenated cardanol and alkylated hydrogenated cardanol) was carried out by ftir. the amount of oh/ooh and c=o formed and also of c=c consumed during the degradation was determined. all materials increase the induction period and decrease the apparent rate constants of thermal-oxidation. based on kinetic parameters, the order of antioxidant activity was: cnsl >> cardanol @ hydrogenated and alkylated cardanol > hydrogenated cardanol. the effect of cnsl could be attributed to the extra contribution of the other components besides cardanol and to the unsaturation on the long side chain. this greater activity is important because cnsl is much more cost effective than its derivatives.
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