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| Registros recuperados: 28 | |
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| Gatesoupe, Joel. |
| This minireview summarizes the present state of knowledge concerning the importance of yeasts in fish gut. Yeasts have been commonly isolated in the gastrointestinal tract, and high population densities were sometimes noted in healthy fish, but the data were quite variable in terms of colony counts and taxonomical diversity. Rhodotorula sp. seemed relatively frequent in both marine and freshwater fish, and Debaryomyces hansenii has been found to be dominant in rainbow trout. Some other dominant strains have been described, such as Metschnikowia zobelii, Trichosporon cutaneum, and Candida tropicalis in marine fish, and Candida sp., Saccharomyces cerevisiae, and Leucosporidium sp. in rainbow trout. The natural proliferation of yeasts in fish mucus may be... |
| Tipo: Text |
Palavras-chave: Immune system; Growth promotion; Gut maturation; Gastrointestinal microbiota; Probiotics; Yeast. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2144.pdf |
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| De Montaudouin, X.; Lucia, M.; Binias, C.; Lassudrie, Malwenn; Baudrimont, M.; Legeay, A.; Raymond, N.; Jude-lemeilleur, F.; Lambert, C.; Le Goic, N.; Garabetian, F.; Gonzalez, P.; Hegaret, Helene; Lassus, Patrick; Mehdioub, W.; Bourasseau, L.; Daffe, G.; Paul-pont, I.; Plus, Martin; Do, V. T.; Meisterhans, G.; Mesmer-dudons, N.; Caill-milly, Nathalie; Sanchez, Florence; Soudant, P.. |
| Asari (= Manila) clam, Ruditapes philippinarum, is the second bivalve mollusc in terms of production in the world and, in many coastal areas, can beget important socio-economic issues. In Europe, this species was introduced after 1973. In Arcachon Bay, after a decade of aquaculture attempt, Asari clam rapidly constituted neo-naturalized population which is now fished. However, recent studies emphasized the decline of population and individual performances. In the framework of a national project (REPAMEP), some elements of fitness, stressors and responses in Arcachon bay were measured and compared to international data (41 publications, 9 countries). The condition index (CI=flesh weight/shell weight) was the lowest among all compared sites. Variation in... |
| Tipo: Text |
Palavras-chave: Ruditapes philippinarum; Condition index; Perkinsus; Brown Muscle Disease; Element contamination; Immune system; Arcachon Bay. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00280/39123/37676.pdf |
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| Fernandez, Ignacio; Lopez-joven, Maria-carmen; Andree, Karl B.; Roque, Ana; Gisbert, Enric. |
| Senegalese sole (Solea senegalensis) has been considered since the 1990´s to be a promising flatfish species for diversifying European marine aquaculture. However, pathogen outbreaks leading to high mortality rates can impair Senegalese sole commercial production at the weaning phase. Different approaches have been shown to improve fish immunocompetence; with this in mind the objective of the work described herein was to determine whether increased levels of dietary vitamin A (VA) improve the immune response in early juveniles of Senegalese sole. For this purpose, Senegalese sole were reared and fed with Artemia metanauplii containing increased levels of VA (37,000; 44,666; 82,666 and 203,000 total VA IU Kg-1) from 6 to 60 days post-hatch (early juvenile... |
| Tipo: Text |
Palavras-chave: Vitamin; Retinoic acid; Immune system; Gene expression; Senegalese sole Solea senegalensis; Photobacterium damselae subp. damselae. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00275/38617/37147.pdf |
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| Rubin,LL; Ribeiro,AML; Canal,CW; Silva,IC; Trevizan,L; Vogt,LK; Pereira,RA; Lacerda,L. |
| Several changes in amino acid levels occur during an infection. As a rule, glycine, taurine and serine levels diminish considerably, while cysteine levels increase. Such changes may be attributed to the intense consumption of sulfur amino acids (SAA- methionine+cysteine) during infectious challenge. Methionine plays an important role in humoral and cellular immune responses. It has been suggested that such effect is exerted by intracellular glutathione and cysteine levels. Four-hundred thirty-two day-old Ross male broiler chickens were fed (from 1 to 42 days of age) three SAA levels in the diet (0.72, 0.82, and 0.92% from 1 to 21 days of age; 0.65, 0.75, and 0.85% from 22 to 42 days of age) and submitted to two immunological stimulus series. Vaccines... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Immune system; Immunological stimulus; Methionine; Performance; Poultry. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100008 |
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| Ocampo,CL; Gómez-Verduzco,G; Tapia-Perez,G; Gutierrez,OL; Sumano,LH. |
| ABSTRACT Considering that glycyrrhizic acid (GRA) has been shown to have in-vitro and in-vivo antiviral activity against a wide range of viruses as well as immunostimulating activity, a trial to evaluate its effects on the performance and the immune response against Newcastle disease of broiler chickens was carried out. The study was performed with one-day-old Ross x Ross broiler chickens. GRA was added to the drinking water throughout the 49-d production cycle at a dose of 0.03%. Sample size of the trial was established in a pilot assay. Results showed that broiler chickens treated with GRA presented better weight gain, final body weight, feed conversion ratio, and lower mortality rate than the non-treated controls. In addition, GRA-treated birds... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler chickens; Growth promotion; Immune system; Glycyrrhizic acid. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300435 |
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| Rubin,LL; Canal,CW; Ribeiro,ALM; Kessler,A; Silva,I; Trevizan,L; Viola,T; Raber,M; Gonçalves,TA; Krás,R. |
| The present study aimed at assessing the effects of methionine and arginine on the immune response of broiler chickens submitted to immunological stimuli. Three methionine concentrations (0.31, 0.51, and 0.66% from 1 to 21 days of age; 0.29, 0.49, and 0.64% from 22 to 42 days of age) and 2 arginine concentrations (1.33 and 1.83%; 1.14 and 1.64% for the same life periods) were tested. Birds were divided into two groups for immunological stimuli (3x2x2 arrangement). Vaccines against Marek's disease, fowl pox, infectious bronchitis, Freund's Complete Adjuvant, Sheep red blood cells (SRBC), and avian tuberculin were administered to one group as immunological stimuli; the other group did not receive any stimulus. The experiment was carried out with 432... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Birds; Immune system; Vaccines. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400006 |
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| RIBEIRO,Suzana Cardoso; CASTELO,Antonielson Silva; SILVA,Bruna Marjara Picanço da; CUNHA,Andreza da Silva; PROIETTI JÚNIOR,Aldo Aparecido; OBA-YOSHIOKA,Eliane Tie. |
| ABSTRACTIn fish farmings, diseases can be reduced by using immunostimulants. The aim of this study was to evaluate the immunostimulant potential of Mentha piperita in tambaqui fed with 0, 0.5, 1.0 and 1.5% of oil per kg of commercial fish feed. The fish were inoculated with Aeromonas hydrophila to challenge them. Hematological and biochemical parameters were determined after 30 days of feeding and seven days after the challenge. There was no mortality and M. piperita oil did not influence fish production parameters. However, blood hemoglobin concentration (Hb) increased in the fish fed with 0.5 and 1.5% of oil per kg of diet; albumin increased in those fed with 1.0%; cholesterol increased in all groups with oil; and triglycerides increased in those fed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Immune system; Natural product; Bacterial challenge; Biochemistry. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000100099 |
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| Fernandes, Jovanir Inês Müller; Universidade Federal do Paraná; Rosa, Daniela Dalla; UFPR - Palotina; Ribeiro, Mayra Vissotto; UFPR-Palotina; Lima, Edna Tereza de; UFPR - Palotina; Fernandes, Nelson Luis Mello; UFPR - Palotina. |
| O estudo foi realizado com o objetivo de avaliar o efeito da suplementação de Arginina (Arg) sobre a resposta imune humoral e o desenvolvimento dos órgãos linfoides de frangos de corte imunizados contra a Doença de Gumboro. Foram utilizados 640 pintos de corte, distribuídos aleatoriamente em um delineamento inteiramente casualizado com quatro tratamentos (1. Controle, 2. Imunização, 3. Imunização + suplementação de L-Arg e 4. Suplementação de L-Arg.) e oito repetições de 20 aves cada. As aves dos tratamentos 3 e 4 foram imunizadas no 16° dia, contra a Doença de Gumboro (cepa intermediária plus). Amostras de soro das aves com 14, 21, 28 e 35 dias de idade foram analisadas por ELISA para detecção de título de anticorpos contra a Doença de Gumboro e... |
| Tipo: Pesquisa de campo |
Palavras-chave: 5.04.03.01-0 Aminoácido; Doença infecciosa da Bursa de Fabrício; Sistema imune; Título de anticorpos; Bolsa cloacal Nutrição animal amino acid; Infectious bursal disease; Immune system; Antibody titers; Cloacal bursa. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/9738 |
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| Fernandes, Jovanir Inês Müller; Universidade Federal do Paraná; Murakami, Alice Eiko; UEM. |
| Due to the lack of a complete urea cycle, uricotelic species, such as broilers, are not able to synthesize de novo arginine (Arg), thus depending exclusively on dietary Arg. High levels of dietary lysine (Lys) increase the demand for Arg because of the antagonistic relationship between these amino acids. The Arg-Lys antagonism promotes an expressive increase in the renal Arg activity and consequently induces the degradation of Arg and the decrease in the activity of glycine amidinotransferase, an enzyme that uses Arg in the synthesis of muscle creatin. Arg is considered an important modulator of immunological and physiological processes. The degradation of Arg produces ornithine, a precursor of polyamines that are key to cell division, DNA synthesis, and... |
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Palavras-chave: Carbamoyl phosphatase synthetase; Creatine; Immune system; Nitric oxide; Polyamines; Urea cycle carbamoyl phosphatase synthetase; Creatine; Immune system; Nitric oxide; Polyamines; Urea cycle. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10990 |
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| KLOSTERHOFF,MARTA C.; PEREIRA JÚNIOR,JOABER; RODRIGUES,RICARDO V.; GUSMÃO,EMELINE P.; SAMPAIO,LUÍS A.; TESSER,MARCELO B.; ROMANO,LUIS A.. |
| ABSTRACT In the present study was evaluated the ontogenic of immunocompetent organs of cobia up to 53 days after hatching (dah) through histology and immunohistochemistry techniques. The kidney was the first lymphohematopoietic organ to appear, at 1 dah, followed by the spleen at 5 dah and the thymus at 7 dah. The first CD3 receptors on the lymphocytes were observed in 27% of the thymic tissue at 7 dah and in 99% at 53 dah. The phenotypic expression of CD3 receptors was registered in 10% of the kidney at 8 dah and in 32% at 53 dah. CD4 receptors were observed in 5% and 63% of the thymic area at 7 and 53 dah, respectively. In the kidney, T4 lymphocytes were first observed at 13 dah in 9% of the organ and in 28% at 53 dah, defining the functional development... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cobia; Immune system; Ontogeny; Immunohistochemistry; Lymphoid organs. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502111 |
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| Pavanelli,Wander Rogério; Gutierrez,Fredy Roberto Salazar; Silva,Jean Jerley Nogueira da; Costa,Ivete Conchon; Menezes,Maria Claudia Noronha Dutra de; Oliveira,Francisco José de Abreu; Itano,Eiko Nakagawa; Watanabe,Maria Angélica Ehara. |
| Nitric oxide (NO) is a free radical synthesized from L-arginine by different isoforms NO-synthases. NO possesses multiple and complex biological functions. NO is an important mediator of homeostasis, and changes in its generation or actions can contribute or not to pathological states. The knowledge of effects of NO has been not only important to our understanding of immune response, but also to new tools for research and treatment of various diseases. Knowing the importance of NO as inflammatory mediator in diverse infectious diseases, we decided to develop a revision that shows the participation/effect of this mediator in immune response induced against Giardia spp. Several studies already demonstrated the participation of NO with microbicidal and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitric oxide; Immune system; Giardiasis. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000600010 |
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| Pompéia,C.; Lopes,L.R.; Miyasaka,C.K.; Procópio,J.; Sannomiya,P.; Curi,R.. |
| Fatty acids have various effects on immune and inflammatory responses, acting as intracellular and intercellular mediators. Polyunsaturated fatty acids (PUFAs) of the omega-3 family have overall suppressive effects, inhibiting lymphocyte proliferation, antibody and cytokine production, adhesion molecule expression, natural killer cell activity and triggering cell death. The omega-6 PUFAs have both inhibitory and stimulatory effects. The most studied of these is arachidonic acid that can be oxidized to eicosanoids, such as prostaglandins, leukotrienes and thromboxanes, all of which are potent mediators of inflammation. Nevertheless, it has been found that many of the effects of PUFA on immune and inflammatory responses are not dependent on eicosanoid... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fatty acids; Immune system; Inflammation; Dietary lipids; Leukocytes. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001100001 |
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| Vaz,N.M.; Faria,A.M.C. de; Verdolin,B.A.; Silva Neto,A.F.; Menezes,J.S.; Carvalho,C.R.. |
| Current immunological opinion disdains the necessity to define global interconnections between lymphocytes and regards natural autoantibodies and autoreactive T cells as intrinsically pathogenic. Immunological theories address the recognition of foreignness by independent clones of lymphocytes, not the relations among lymphocytes or between lymphocytes and the organism. However, although extremely variable in cellular/molecular composition, the immune system preserves as invariant a set of essential relations among its components and constantly enacts contacts with the organism of which it is a component. These invariant relations are reflected, for example, in the life-long stability of profiles of reactivity of immunoglobulins formed by normal organisms... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Immunobiology; Immune system; Closure; Network; Autopoiesis; Panama blot. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000100003 |
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| Fernandes,C.I.; Llimona,F.; Godoy,L.C.; Negri,E.M.; Pontieri,V.; Moretti,A.I.; Fernandes,T.R.; Soriano,F.G.; Velasco,I.T.; Souza,H.P.. |
| Shock and resuscitation render patients more susceptible to acute lung injury due to an exacerbated immune response to subsequent inflammatory stimuli. To study the role of innate immunity in this situation, we investigated acute lung injury in an experimental model of ischemia-reperfusion (I-R) followed by an early challenge with live bacteria. Conscious rats (N = 8 in each group) were submitted to controlled hemorrhage and resuscitated with isotonic saline (SS, 0.9% NaCl) or hypertonic saline (HS, 7.5% NaCl) solution, followed by intratracheal or intraperitoneal inoculation of Escherichia coli. After infection, toll-like receptor (TLR) 2 and 4 mRNA expression was monitored by RT-PCR in infected tissues. Plasma levels of tumor necrosis factor α and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Toll-like receptors; Immune system; Pneumonia; Escherichia coli; Neutrophils. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001000004 |
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| Licinio,J.; Frost,P.. |
| Cytokines are molecules that were initially discovered in the immune system as mediators of communication between various types of immune cells. However, it soon became evident that cytokines exert profound effects on key functions of the central nervous system, such as food intake, fever, neuroendocrine regulation, long-term potentiation, and behavior. In the 80's and 90's our group and others discovered that the genes encoding various cytokines and their receptors are expressed in vascular, glial, and neuronal structures of the adult brain. Most cytokines act through cell surface receptors that have one transmembrane domain and which transduce a signal through the JAK/STAT pathway. Of particular physiological and pathophysiological relevance is the fact... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Central nervous system; Cytokines; Immune system; Neuroendocrine regulation; Fever; Food intake. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001000003 |
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| Registros recuperados: 28 | |
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