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| Vizotto,V.A.; Carvalho,R.F.; Sugizaki,M.M.; Lima,A.P.; Aragon,F.F.; Padovani,C.R.; Castro,A.V.B.; Dal Pai-Silva,M.; Nogueira,C.R.; Cicogna,A.C.. |
| We have shown that myocardial dysfunction induced by food restriction is related to calcium handling. Although cardiac function is depressed in food-restricted animals, there is limited information about the molecular mechanisms that lead to this abnormality. The present study evaluated the effects of food restriction on calcium cycling, focusing on sarcoplasmic Ca2+-ATPase (SERCA2), phospholamban (PLB), and ryanodine channel (RYR2) mRNA expressions in rat myocardium. Male Wistar-Kyoto rats, 60 days old, were submitted to ad libitum feeding (control rats) or 50% diet restriction for 90 days. The levels of left ventricle SERCA2, PLB, and RYR2 were measured using semi-quantitative RT-PCR. Body and ventricular weights were reduced in 50% food-restricted... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Food restriction; SERCA2; Ryanodine channel; Phospholamban; MRNA. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000100004 |
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| Santos,Marcio Quara de Carvalho; Lima,Mariana do Amaral Camara; Santos,Luciana dos; Pereira-Filho,Manoel; Ono,Eduardo Akifumi; Affonso,Elizabeth Gusmão. |
| The objective of this work was to evaluate the effect of feed deprivation and refeeding with diets containing different energy to protein ratios (E/P) on the performance and physiology of juvenile tambaqui (Colossoma macropomum). A 4x2 factorial arrangement with three replicates was used, with four E/P ratios (11.5, 10.5, 9.5, and 8.5 kcal g-1 digestible energy per protein) and two feeding regimens (with and without deprivation), during 60 days. Fish from the food-deprived group were fasted for 14 days and refed from the fifteenth to the sixtieth day, whereas the remaining fish were fed for 60 days. At the end of the experimental period, weight of fish subjected to food deprivation was lower than that of those continuously fed; however, this condition did... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colossoma macropomum; Blood parameters; Energy/protein requirement; Food restriction. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800024 |
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| SCHOFFEN,JOÃO PAULO F.; VICENTINI,FERNANDO A.; MARCELINO,CAROLINA G.; ARAÚJO,EDUARDO J.A.; PEDROSA,MARIA M.D.; NATALI,MARIA R.M.. |
| The effects of food restriction (FR) on the morphoquantitative aspects of the wall and myenteric neurons of the proximal colon in adult rats were analysed. FR was imposed by duplication of the experimental brood size in relation to the control brood during lactation. The FR group received a 50% reduction of food from weaning until 90 days of age. Samples of the colon underwent histological processing to morphometrically analyze the crypts, muscularis mucosae, tunica mucosa, and muscularis externa. We determined the number of goblet cells and serotoninergic enteroendocrine cells, and morphoquantitatively studied the myenteric neuronal population. FR caused hypertrophy in the tunica mucosa, increase in crypt depth and in the muscular layer of the mucosa, a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enteroendocrine cells; Food restriction; Goblet cells; Intestinal morphology; Myenteric neurons; Serotonin. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401833 |
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| Fernandez-Alarcon,Miguel Frederico; Souza,Fernando Augusto de; Campos,Daniel Mendes Borges; Hada,Fabricio Hirota; Nogueira,Wedson Carlos Lima; Macari,Marcos; Furlan,Luiz Roberto; Furlan,Renato Luis. |
| ABSTRACT The influence of fasting and vaccination against infectious bronchitis (IB) on growth, gastrointestinal development, and morphometric parameters of the small intestine of newborn broiler breeders was investigated. Weight gain (WG), feed conversion ratio (FCR), gastrointestinal visceral growth, residual yolk sac, and morphometric parameters of the small intestine were measured in chicks aged up to 21 d. We showed that WG was lowest in chicks exposed to longer fasting periods (72 h), although compensatory gains with increasing age were also observed. Unvaccinated chicks performed better at seven days; however, at 21 d of age, a compensatory response led to better FCR in vaccinated birds. Allometric growth of the gastrointestinal tract was affected... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food restriction; Gastrointestinal tract growth; Infectious bronchitis immunization; Intestinal morphometry. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100510 |
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| RECABARREN,SERGIO E; LOBOS,ALEJANDRO; TORRES,VERÓNICA; OYARZO,ROBERTO; SIR-PETERMANN,TERESA. |
| Leptin, the product of the ob gene, has been proposed as a metabolic signal that regulates the secretion of GnRH/LH. This may be critical during prepubertal development to synchronize information about energy stores and the secretion of GnRH/LH. This study aimed to assess the effect of food restriction on the episodic secretion of leptin and LH in young female sheep. Five 20-week-old prepubertal females were fed a low-level diet for 10 weeks to maintain the body weight. Control females of the same age received food ad libitum. Blood samples were collected at 10-min intervals for six hours at 20, 26, and 30 weeks of age, and plasma leptin, LH, insulin and cortisol concentrations were measured. In the control group, no changes were found in pulsatile LH... |
| Tipo: Journal article |
Palavras-chave: Female sheep; Food restriction; Leptin; LH; Puberty. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000300003 |
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| Domingues,C H de F; Sgavioli,S; Praes,M F F M; Castiblanco,D M C; Marchizeli,P C A; Pereira,A A; Duarte,K F; Junqueira,O M. |
| An experiment was carried out to evaluate the performance, egg quality and morphometry of the reproductive tract, liver, pancreas and tongue of laying hens submitted to different molting methods. Two hundred and eighty eight 72-week-old Isa brown layers were distributed according to a completely randomized design with six treatments (molting methods) and six replicates of eight birds each. Layers were fed diets containing 3000 ppm zinc oxide, 60 ppm or 120 ppm nicarbazin, 30 ppm or 60 ppm salinomycin, or were submitted to feed fasting. Data were submitted to analysis of variance and means were compared by the test of Tukey at 5% probability level. Molting methods alternative to feed fasting were effective to induce molting in layer and provided good... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food restriction; Performance; Egg quality; Morphometry. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200003 |
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