Consulta: subjectFacets:"Energy metabolism"
Registros recuperados: 14
Data/hora: 07/06/2024 10:18:38

Microarray-Based Identification of Gonad Transcripts Differentially Expressed Between Lines of Pacific Oyster Selected to Be Resistant or Susceptible to Summer Mortality
Provedor de dados: 5
Autores: Fleury, Elodie; Moal, Jeanne; Boulo, Viviane; Daniel, Jean-yves; Mazurais, David; Henaut, Alain; Corporeau, Charlotte; Boudry, Pierre; Favrel, Pascal; Huvet, Arnaud.
Summer mortality of the Pacific oyster Crassostrea gigas is the result of a complex interaction between oysters, their environment, and pathogens. Heredity appears to be a major factor determining the sensitivity of oysters to summer mortality, allowing resistant (R) and susceptible (S) lines to be produced. We conducted genome-wide expression profiling of R and S gonads during the 3-month period preceding a summer mortality event, using a cDNA microarray that we designed. ANOVA analysis revealed that 34 genes were differentially expressed between R and S lines on four dates preceding the mortality event. Annotation of some of these genes highlights reproduction and its allocation and antioxidant defenses as the main pathways that operate differentially...
Tipo: Text
Palavras-chave: Mollusca; Bivalvia; Gene expression; CDNA microarrays; Reproduction; Oxidative stress; Energy metabolism.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00005/11590/8258.pdf

Functional Characterization of a short neuropeptide F-related receptor in a Lophotrochozoa, the mollusk Crassostrea gigas
Provedor de dados: 5
Autores: Bigot, Laetitia; Beets, Isabel; Dubos, Marie-pierre; Boudry, Pierre; Schoofs, Liliane; Favrel, Pascal.
Members of the short neuropeptide F (sNPF) family of peptides and their cognate receptors play key roles in a variety of physiological processes in arthropods. In silico screening of GigasDatabase, a specific expressed sequence tag database from the Pacific oyster Crassostrea gigas, resulted in the identification of a receptor (CgsNPFR-like) phylogenetically closely related to sNPF receptors (sNPFRs) of insects. A reverse endocrinology approach was undertaken to identify the peptide ligand(s) of this orphan receptor. Though structurally distinct from insect sNPFs, three RFamide peptides derived from the same precursor, i.e. GSLFRFamide, SSLFRFamide and GALFRFamide, specifically activate the receptor in a dose-dependent manner, with respective EC50 values...
Tipo: Text
Palavras-chave: Oyster; Crassostrea gigas; SNPF; Energy metabolism; Reproduction; Starvation.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00207/31777/30188.pdf

Metabolic and digestive activity profiles of newly hatched spotted wolffish (Anarhichas minor Olafsen): effect of temperature
Provedor de dados: 5
Autores: Savoie, A; Le Francois, N; Cahu, Chantal; Blier, P.
Three groups of newly hatched spotted wolffish (Anarhichas minor) were held at three different temperatures in order to determine relationships between metabolic, digestive and growth response in rapidly developing larvae. Growth rates were successfully modulated by temperature (5, 8 and 12 degrees C). Activity levels of trypsin and lactate dehydrogenase (LDH) were positively linked to specific growth rates at all temperatures. Trypsin showed a positive compensation (higher activity at lower temperature) whereas glycolytic enzymes (pyruvate kinase and Lactate dehydrogenase) and aspartate aminotransferase (AST) showed a negative compensation (lower activity at lower temperature). Citrate synthase was not affected by growth rate, indicating that the level of...
Tipo: Text
Palavras-chave: Anarhichas minor; Temperature; Growth; Energy metabolism; Digestive capacities.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-3810.pdf

To boldly gulp: standard metabolic rate and boldness have context-dependent influences on risk-taking to breathe air in a catfish
Provedor de dados: 5
Autores: Mckenzie, David; Belao, Thiago C.; Killen, Shaun S.; Rantin, F. Tadeu.
The African sharptooth catfish Clarias gariepinus has bimodal respiration, it has a suprabranchial air-breathing organ alongside substantial gills. We used automated bimodal respirometry to reveal that undisturbed juvenile catfish (N=29) breathed air continuously in normoxia, with a marked diurnal cycle. Air breathing and routine metabolic rate (RMR) increased in darkness when, in the wild, this nocturnal predator forages. Aquatic hypoxia (20% air saturation) greatly increased overall reliance on air breathing. We investigated whether two measures of risk taking to breathe air, namely absolute rates of aerial O-2 uptake ((M) over dotO(2), air) and the percentage of RMR obtained from air (% (M) over dotO(2), air), were influenced by individual standard...
Tipo: Text
Palavras-chave: Bimodal respiration; Energy metabolism; Hypoxia; Personality; Respiratory partitioning; Risk-taking.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00626/73822/73663.pdf

Aerobic scope explains individual variation in feeding capacity
Provedor de dados: 5
Autores: Auer, Sonya K.; Salin, Karine; Anderson, Graeme J.; Metcalfe, Neil B.
Links between metabolism and components of fitness such as growth, reproduction and survival can depend on food availability. A high standard metabolic rate (SMR; baseline energy expenditure) or aerobic scope (AS; the difference between an individual's maximum and SMR) is often beneficial when food is abundant or easily accessible but can be less important or even disadvantageous when food levels decline. While the mechanisms underlying these context-dependent associations are not well understood, they suggest that individuals with a higher SMR or AS are better able to take advantage of high food abundance. Here we show that juvenile brown trout (Salmo trutta) with a higher AS were able to consume more food per day relative to individuals with a lower AS....
Tipo: Text
Palavras-chave: Energy metabolism; Fitness; Food intake; Maximum metabolic rate; Salmo trutta; Standard metabolic rate.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00414/52505/53324.pdf

Exposure to chronic moderate hypoxia impacts physiological and developmental traits of European sea bass (Dicentrarchus labrax) larvae
Provedor de dados: 5
Autores: Vanderplancke, Gwenaelle; Claireaux, Guy; Quazuguel, Patrick; Huelvan, Christine; Corporeau, Charlotte; Mazurais, David; Zambonino-infante, Jose-luis.
Since European sea bass (Dicentrarchus labrax) larvae occurred in coastal and estuarine waters at early life stages, they are likely to be exposed to reduced dissolved oxygen waters at a sensitive developmental stage. However, the effects of hypoxia at larval stage, which depend in part on fish species, remain very poorly documented in European sea bass. In the present study, the impacts of an experimental exposure to a chronic moderate hypoxia (40 % air saturation) between 30 and 38 days post-hatching on the physiological and developmental traits of European sea bass larvae were assessed. This study was based on the investigation of survival and growth rates, parameters related to energy metabolism [Citrate Synthase (CS) and Cytochrome-c Oxidase (COX)...
Tipo: Text
Palavras-chave: Hypoxia; Fish larvae; Energy metabolism; Maturation.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00253/36433/35005.pdf

Physiological and biochemical changes associated with massive mortality events occurring in larvae of American oyster (Crassostrea virginica)
Provedor de dados: 5
Autores: Genard, Bertrand; Pernet, Fabrice; Lemarchand, Karine; Boudry, Pierre; Moraga, Dario; Tremblay, Rejean.
In this paper, biochemical and physiological analyses were used to characterize changes associated with mortality event occurred during veliger development of American oyster, Crassostrea virginica. Biochemical analyses included the evaluation of lipid classes, fatty acid composition and total protein content. Larval physiology was evaluated by studying feeding activity, enzymes related to energy metabolism, oxidative stress levels and enzymatic antioxidant defenses. These analyses were complemented by bacterial community analyses as well as by measuring larval oyster performance. We observed that mortality events coincided with (1) strong changes in the surrounding bacterial community; (2) a progressive decrease in feeding activity; (3) higher levels of...
Tipo: Text
Palavras-chave: Massive mortality; Larvae; Microbial environment; Lipid; Fatty acids; Energy metabolism; Oxidative stress; Antioxidant enzymes; Crassostrea virginica.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00051/16231/13753.pdf

Modeling energy utilization in broiler breeders, laying hens and broilers
Provedor de dados: 89
Autores: Sakomura,NK.
The factorial approach has been used to partition the energy requirements into maintenance, growth, and production. The coefficients determined for these purposes can be used to elaborate energy requirement models. These models consider the body weight, weight gain, egg production, and environmental temperature to determine the energy requirements for poultry. Predicting daily energy requirement models can help to establish better and more profitable feeding programs for poultry. Studies were conducted at UNESP-Jaboticabal to determine metabolizable energy (ME) requirement models for broiler breeders, laying hens, and broilers. These models were evaluated in performance trials and provided good adjustments. Therefore, they could be used to establish...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Broiler breeders; Energy metabolism; Energy requirement; Factorial approach; Laying hens; Modeling.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100001

Changes in maternal body composition and metabolism of dairy goats during pregnancy
Provedor de dados: 96
Autores: Castagnino,Douglas de Souza; Härter,Carla Joice; Rivera,Astrid Rivera; Lima,Lisiane Dorneles de; Silva,Herymá Giovane de Oliveira; Biagioli,Bruno; Resende,Kleber Tomás de; Teixeira,Izabelle Auxiliadora Molina de Almeida.
The objective of this study was to evaluate the mobilization of nutrients in goats of different gestation types and pregnancy stages. Forty-four Saanen and Oberhasli goats were studied. The goats of each breed and gestation type (single or twin) were slaughtered at different gestational ages (80, 110, and 140 days of pregnancy), forming a completely randomized design in a 2 × 3 × 2 factorial arrangement (two breeds, three gestational ages, and two types of pregnancy). The slaughter procedure involved separating the empty body, mammary glands, uterus with membranes and fetal fluid, and fetus(es). For the females slaughtered at 140 days of pregnancy, blood was collected to analyze metabolites and hormones every 15 days during gestation. The dry matter (DM)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy metabolism; Hormone profile; Metabolic and nutritional profile; Pregnancy outcomes; Type of pregnancy.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000300092

Increased urinary losses in piglets fed diets containing high levels of glycerin
Provedor de dados: 96
Autores: Fischer,Manuela Marques; Moraes,Mariana Lemos de; Marcolla,Camila Schultz; Kessler,Alexandre de Mello.
ABSTRACT This study evaluated the nutritional value of glycerin added to diets of weaned piglets and its effects on animal performance and urinary losses. Weaned piglets were individually housed in metabolic cages and fed diets in which a basal diet containing lactose (Gly0) was replaced by 50 (Gly50), 100 (Gly100), or 150 g kg−1 (Gly150) of glycerin; or a diet in which 100 g kg−1 of the lactose in the basal diet was replaced by glycerin (Gly100Lac0). Diets were offered for two periods of 12 days (phase I and phase II). Performance, nutrient digestibility, nitrogen retention (NR), and urinary production were measured. Digestible (DE) and metabolizable energy (ME) of glycerin were calculated using substitution method and compared to iso-nutritional diets...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Energy metabolism; Lactose; Performance; Urinary excretion.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100502

Resveratrol and resveratrol-hydroxypropyl-β-cyclodextrin complex recovered the changes of creatine kinase and Na+, K+-ATPase activities found in the spleen from streptozotocin-induced diabetic rats
Provedor de dados: 42
Autores: KOLLING,JENIFER; KOLLING,JANAÍNA; FRANCESCHI,ITIANE D. DE; NISHIHIRA,VIVIAN S.K.; BALDISSERA,MATHEUS D.; PINTO,CLÁUDIA G.; MEZZOMO,NATHANA J.; CARMO,GUILHERME M. DO; FEKSA,LUCIANE R.; FERNANDES,LIANA S.; ORENGO,GILBERTO; VAUCHER,RODRIGO A.; GIONGO,JANICE L.; WYSE,ANGELA T.S.; WANNMACHER,CLOVIS M.D.; RECH,VIRGINIA C.
Abstract: Type 1 diabetes (T1D) is the result of the selective destruction of the pancreatic β-cells by T cells of the immune system. Although spleen is a secondary lymphoid organ, it is also involved in the T1D pathogenesis. However, the alterations in a variety of cellular processes of this disease need to be further understood. We aimed to analyze the benefits of resveratrol, and its complexed form on diabetic complications in the spleen of rats. To this end, we investigated important enzymes of phosphoryl transfer network, and Na+, K+-ATPase activity. Wistar rats were divided into non-diabetic groups: Control, Ethanol, Resveratrol, Hydroxypropyl-β-cyclodextrin, Resveratrol-hydroxypropyl-β-cyclodextrin, and diabetic groups with the same treatments....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy metabolism; Hydroxypropyl-β-cyclodextrin; Hyperglycemia; Nanotecnology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500701

Oxygen consumption of rats with broad intestinal resection
Provedor de dados: 56
Autores: Luz,J.; Griggio,M.A.; Fagundes,D.J.; Araújo,R.M.; Marcondes,W.
The study was performed to investigate possible alterations in oxygen consumption in an animal model with broad intestinal resection. Oxygen consumption and the thermal effect of a short meal were measured in rats subjected to short bowel syndrome. Four groups of rats were used. Group I was the control group, group II was sham operated, group III was submitted to 80% jejunum-ileum resection, and group IV was submitted to 80% jejunum-ileum resection with colon interposition. Ninety days after surgery, oxygen consumption was measured over a period of 6 h with the animals fasted overnight. The thermal effect of feeding was determined in another session of oxygen consumption measurement in animals fasted for 12 h. A 12-kcal meal was then introduced into the...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Cephalic thermal effect of food; Energy metabolism; Intestinal resection; Oxygen consumption; Short bowel syndrome.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001200015

Inhibition of in vitro CO2 production and lipid synthesis by 2-hydroxybutyric acid in rat brain
Provedor de dados: 56
Autores: Silva,A.R.; Ruschel,C.; Helegda,C.; Wyse,A.T.S.; Wannmacher,C.M.D.; Wajner,M.; Dutra-Filho,C.S.
2-Hydroxybutyric acid appears at high concentrations in situations related to deficient energy metabolism (e.g., birth asphyxia) and also in inherited metabolic diseases affecting the central nervous system during neonatal development, such as "cerebral" lactic acidosis, glutaric aciduria type II, dihydrolipoyl dehydrogenase (E3) deficiency, and propionic acidemia. The present study was carried out to determine the effect of 2-hydroxybutyric acid at various concentrations (1-10 mM) on CO2 production and lipid synthesis from labeled substrates in cerebral cortex of 30-day-old Wistar rats in vitro. CO2 production was significantly inhibited (30-70%) by 2-hydroxybutyric acid in cerebral cortex prisms, in total homogenates and in the mitochondrial fraction. We...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Lipid synthesis; Energy metabolism; Cerebral cortex; 2-hydroxybutyric acid.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000500010

Association between anaerobic components of the maximal accumulated oxygen deficit and 30-second Wingate test
Provedor de dados: 56
Autores: Bertuzzi,R.; Kiss,M.A.P.D.M.; Damasceno,M.; Oliveira,R.S.F.; Lima-Silva,A.E.
The purpose of this study was to analyze the relationship between the anaerobic components of the maximal accumulated oxygen deficit (MAOD) and of the 30-second Wingate anaerobic test (30-WAnT). Nine male physical education students performed: a) a maximal incremental exercise test; b) a supramaximal constant workload test to determine the anaerobic components of the MAOD; and c) a 30-WAnT to measure the peak power (PP) and mean power (MP). The fast component of the excess post-exercise oxygen consumption and blood lactate accumulation were measured after the supramaximal constant workload test in order to determine the contributions made by alactic (ALMET) and lactic (LAMET) metabolism. Significant correlations were found between PP and ALMET (r=0.71;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oxygen uptake; Blood lactate; Anaerobic metabolism; Energy metabolism; Excess post-exercise oxygen consumption; High-intensity exercise.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000300261