Research Topics
Genomes and Genes | D RichardSummaryCountry: Canada Publications
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Publications
The laval questionnaire: a new instrument to measure quality of life in morbid obesityFanny Therrien
Centre de Recherche, Institut universitaire de cardiologie et de pneumologie de Québec affilié à l Université Laval, 2725 Chemin Ste Foy, Quebec, Quebec G1V 4G5, Canada
Health Qual Life Outcomes 9:66. 2011..Our objective was to validate a new self-administered questionnaire specific to morbid obesity to be used in clinical trials. The study was carried out at the bariatric surgery clinic of Laval Hospital, Quebec City, Canada...
The effects of acylation stimulating protein supplementation VS antibody neutralization on energy expenditure in wildtype miceSabina Paglialunga
Centre de Recherche de l Institut Universitaire de Cardiologie et de Pneumologie de Quebec, Universite Laval, Quebec, QC, G1V 4G5, Canada
BMC Physiol 10:4. 2010..Continuous administration for 4 weeks via osmotic mini-pump of Anti-ASP or rASP was evaluated in wildtype mice on a high-fat diet (HFD) to examine their effects on body weight, food intake and energy expenditure...
Brown fat biology and thermogenesisDenis Richard
Quebec Heart And Lung Institute Research Center and Laval University Interdisciplinary Group In Obesity Research, 2725 Chemin Sainte Foy, Quebec G1V 4G5, Canada
Front Biosci 16:1233-60. 2011..This review aims at the unique biology of BAT with the emphasis put on the recent discoveries regarding the brown adipocyte development and function...
Determinants of brown adipocyte development and thermogenesisD Richard
Centre de Recherche de l Institut Universitaire de Cardiologie et de Pneumologie de Quebec, et Groupe interdisciplinaire de Recherche sur l Obésité de l Université Laval, Quebec, Canada
Int J Obes (Lond) 34:S59-66. 2010..This short review summarizes recent progress made in the biology of the brown fat cell and focuses on the determinants of the brown adipocyte development and activity...
Influence of topiramate in the regulation of energy balanceD Richard
Centre de Recherche de l Hôpital Laval et Centre de Recherche sur le Métabolisme Energétique de l Université Laval, Faculte de Medecine, Universite Laval, Quebec, Canada
Nutrition 16:961-6. 2000..The mechanisms whereby an AED such as TPM controls food intake and energy expenditure remains to be delineated. Copyright1999 ASCRS and ESCRS..
Distribution of the uncoupling protein 2 mRNA in the mouse brainD Richard
Departement de Physiologie, Faculte de Medecine, Universite Laval, Quebec, Canada
J Comp Neurol 397:549-60. 1998..In addition, by promoting oxygen consumption in the brain, UCP2 could control the production of reactive oxygen species and thereby influence the process of neural degeneration...
Palatable high-energy diet decreases the expression of cannabinoid type 1 receptor messenger RNA in specific brain regions in the ratE Timofeeva
Centre de Recherche de l Institut Universitaire de Cardiologie et de Pneumologie de Quebec, l Université Laval, Quebec, Canada
J Neuroendocrinol 21:982-92. 2009..Altogether, the present results demonstrate that long-term PHED leads to an increase in the hypothalamic expression of SOCS-3 mRNA and a decrease in expression of CB1R mRNA in the Cg cortex and specific hypothalamic regions...
Expression of corticotropin-releasing factor and its receptors in the brain of lean and obese Zucker ratsD Richard
Departement de Physiologie, Faculte de Medecine, Universite Laval, Quebec, Canada
Endocrinology 137:4786-95. 1996....
Effects of the biliopancreatic diversion on energy balance in the ratE Nadreau
Laval Hospital Research Center, 2725, chemin Sainte-Foy, , Canada
Int J Obes (Lond) 30:419-29. 2006..The reduction in energy gain occurs despite adaptations to thwart the intestinal malabsorption and the hunger signals from the central nervous system...
Brain distribution of UCP2 mRNA: in situ hybridization histochemistry studiesD Richard
Centre de Recherche sur le Métabolisme Energétique et Département de Physiologie, Universite Laval, Quebec, Canada
Int J Obes Relat Metab Disord 23:S53-5. 1999..In addition, by elevating oxygen consumption in the brain, UCP2 could in specific regions control the production of reactive oxygen species and thereby influence the process of neural degeneration...
Energy expenditure: a critical determinant of energy balance with key hypothalamic controlsD Richard
Laval Hospital Research Center and Merck Frosst CIHR Research Chair in Obesity Chemin Sainte Foy, Quebec, Canada
Minerva Endocrinol 32:173-83. 2007....
Effects of leptin and corticosterone on the expression of corticotropin-releasing hormone, agouti-related protein, and proopiomelanocortin in the brain of ob/ob mouseK Arvaniti
Centre de Recherche de l Hôpital Laval et Centre de Recherche sur le Métabolisme Energétique, Universite Laval, Quebec, Canada
Neuroendocrinology 73:227-36. 2001..Finally, the present results suggest that the effects of leptin on the expression of CRH, POMC and AGRP are not curbed by glucocorticoids...
The effects of topiramate and sex hormones on energy balance of male and female ratsD Richard
Centre de Recherche de l Hôpital Laval et Centre de Recherche sur le Métabolisme Energétique de l Université Laval, Quebec, Canada
Int J Obes Relat Metab Disord 26:344-53. 2002....
Regulation of corticotropin-releasing factor and its types 1 and 2 receptors by leptin in rats subjected to treadmill running-induced stressQingling Huang
Laval Hospital Research Center and Merck-Frosst/IRSC Obesity Research Chair, 2725 Chemin Sainte-Foy, , Canada
J Endocrinol 191:179-88. 2006....
Effects of the CRF1 receptor antagonist SSR125543 on energy balance and food deprivation-induced neuronal activation in obese Zucker ratsChristian Doyon
Chaire de recherche Merck Frosst IRSC sur l obésité and Centre de recherche de l Hôpital Laval, 2725 Chemin Sainte Foy, Quebec, Canada G1V 4G5
J Endocrinol 193:11-9. 2007....
Estrogen receptor alpha-mediated adiposity-lowering and hypocholesterolemic actions of the selective estrogen receptor modulator acolbifeneC Lemieux
Department of Anatomy and Physiology, Faculty of Medicine, Laval Hospital Research Center, Laval University, Quebec City, Quebec, Canada
Int J Obes (Lond) 29:1236-44. 2005..CONCLUSION: The beneficial metabolic actions of the SERM ACOL on adiposity and on plasma and liver lipids are entirely due to its interaction with the ERalpha...
The corticotropin-releasing hormone system in the regulation of energy balance in obesityD Richard
Centre de recherche sur le métabolisme énergétique, and Départment d anatomie et de physiologie, Faculte de Medecine, Universite Laval, Quebec, Canada
Int J Obes Relat Metab Disord 24:S36-9. 2000....
Effects of intracerebroventricular and intra-accumbens melanin-concentrating hormone agonism on food intake and energy expenditureBenjamin Guesdon
Centre de Recherche de l Hôpital Laval et Centre de Recherche sur le Métabolisme Energétique de l Université Laval, Quebec, Canada
Am J Physiol Regul Integr Comp Physiol 296:R469-75. 2009..The present results further delineate the influence of MCH on energy expenditure and substrate oxidation while confirming the key role of the NAcSH in the effects of the MCH system on food intake...
PPAR-gamma activation mediates adipose depot-specific effects on gene expression and lipoprotein lipase activity: mechanisms for modulation of postprandial lipemia and differential adipose accretionMathieu Laplante
Department of Anatomy and Physiology, Laval Hospital Research Center, School of Medicine, Laval University, Quebec, Canada
Diabetes 52:291-9. 2003..These depot-specific effects may be mediated by differential regulation of key metabolic genes, including LPL, 11beta-HSD-1, and UCP-1...
Additive effects of olanzapine and melanin-concentrating hormone agonism on energy balanceBenjamin Guesdon
Centre de recherche de l Institut de cardiologie et de pneumologie de Québec Hôpital Laval et Centre de recherche sur le métabolisme énergétique de l Université Laval, 2725 Chemin Sainte Foy, Quebec, Canada
Behav Brain Res 207:14-20. 2010..AAPDs and MCH agonism exert additive effects on energy balance and selective effects on the brain expression of energy balance-related genes...
Metabolic fitness in active reduced-obese individualsA Tremblay
Division of Kinesiology, Laval University, Ste Foy, Quebec, Canada
Obes Res 7:556-63. 1999..To verify whether a physical activity-low-fat diet follow-up could normalize the metabolic risk profile of reduced-obese men and women having undergone considerable weight loss through energy restriction and drug therapy...
Effects of ramipril and rosiglitazone on cardiovascular and renal outcomes in people with impaired glucose tolerance or impaired fasting glucose: results of the Diabetes REduction Assessment with ramipril and rosiglitazone Medication (DREAM) trialG R Dagenais
Laval University Heart and Lung Institute, 2725 Chemin Ste Foy, Quebec, Quebec City, Canada
Diabetes Care 31:1007-14. 2008..We determined the effects of ramipril and rosiglitazone on combined and individual CVD and renal outcomes in people with IGT and/or IFG in the Diabetes REduction Assessment With ramipril and rosiglitazone Medication (DREAM) trial...
Uncoupling protein 2 in the brain: distribution and functionD Richard
Centre de Recherche de l Hôpital Laval et Centre de Recherche sur le Métabolisme Energétique de l Université Laval, Faculte de Medecine, Universite Laval, Quebec, Canada G1K 7P4
Biochem Soc Trans 29:812-7. 2001..The role of UCP2 in neuroprotection warrants further investigation...
The role of gene regulation in obesity and its complications: introductionD Richard
DB Brown Research Chair on Obesity, Laval Hospital Research Center, , , Canada
Int J Obes (Lond) 29:S1-2. 2005
Peanut protein reduces body protein mass and alters skeletal muscle contractile properties and lipid metabolism in ratsHelene Jacques
Department of Food Science and Nutrition, Institute of Nutraceuticals and Functional Foods, Laval University, Quebec, Canada G1V 0A6
Br J Nutr 103:1331-9. 2010..Adding a complete protein such as C might partially counteract these adverse effects...
A survey of genes differentially expressed in subcutaneous and visceral adipose tissue in menMarie Claude Vohl
Lipid Research Center, 2705 Laurier Blvd TR 93, Quebec City, PQ, Canada G1V 4G2
Obes Res 12:1217-22. 2004....
Circuitries involved in the control of energy homeostasis and the hypothalamic-pituitary-adrenal axis activityDenis Richard
D B Brown Obesity Research Chair, Centre de Recherche, l Hôpital Laval, Institut universitaire de cardiologie et de pneumologie Québec, Quebec, Canada
Treat Endocrinol 3:269-77. 2004..A link is made between the pathways regulating energy balance and those modulating the activity of the hypothalamic-pituitary-adrenal axis...
The brain endocannabinoid system in the regulation of energy balanceDenis Richard
Laval Hospital Research Center, Quebec, Canada, G1V 4G5
Best Pract Res Clin Endocrinol Metab 23:17-32. 2009..This article aims at reviewing the potential mechanisms whereby the brain endocannabinoid system influences the regulation energy balance...
Effects of treadmill running on brain activation and the corticotropin-releasing hormone systemElena Timofeeva
, Laval, , Canada
Neuroendocrinology 77:388-405. 2003....
The corticotropin-releasing factor family of peptides and CRF receptors: their roles in the regulation of energy balanceDenis Richard
D B Brown Chair on Obesity Research and Laval Hospital Research Center, Laval University, Quebec Qué, Canada G1K 7P4
Eur J Pharmacol 440:189-97. 2002..Although there are still important unresolved issues in the field of CRF research, the progress made recently warrants investigations aimed at evaluating the CRF system as a potential target for anti-obesity drugs...
Effects of leptin on melanin-concentrating hormone expression in the brain of lean and obese Lep(ob)/Lep(ob) miceQ Huang
Centre de recherche sur le métabolisme énergétique CREME et Département d anatomie et de physiologie, Faculte de Medecine, Universite Laval, Quebec, Canada
Neuroendocrinology 69:145-53. 1999..It may also indicate that MCH mediates the metabolic actions of leptin indirectly or else that leptin influences actions of MCH other than those related to the regulation of energy balance...
Gene expression variability in subcutaneous and omental adipose tissue of obese menYonghua Zhang
Molecular Endocrinology and Oncology Research Center, Laval University Medical Research Center, Quebec, Canada
Gene Expr 14:35-46. 2007....
Elevated sensitivity to diet-induced obesity and insulin resistance in mice lacking 4E-BP1 and 4E-BP2Olivier Le Bacquer
Department of Biochemistry, McGill University, Montreal, Quebec, Canada
J Clin Invest 117:387-96. 2007..These data clearly demonstrate the role of 4E-BPs as a metabolic brake in the development of obesity and reinforce the idea that deregulated mTOR signaling is associated with the development of the metabolic syndrome...
Disruption of the uncoupling protein-2 gene in mice reveals a role in immunity and reactive oxygen species productionD Arsenijevic
Centre de Recherche de Hôpital Laval et Centre de Recherche sur le Métabolisme Energétique, Universite Laval, Quebec, Canada
Nat Genet 26:435-9. 2000..001 ), which was absent in the presence of a quencher of reactive oxygen species (ROS). Our results indicate a role for Ucp2 in the limitation of ROS and macrophage-mediated immunity...
The food-hoarding threshold is not raised by acute intraventricular NPY in male ratsM Cabanac
Departement de Physiologie, Faculte de Medecine, Universite Laval, Quebec, Canada
Physiol Behav 61:131-5. 1997..Mean food intake during the hoarding sessions was also unchanged. These results suggest that intracerebral NPY at 4 micrograms did not acutely alter the set-point for body weight regulation...
Effects of rimonabant (SR141716) on fasting-induced hypothalamic-pituitary-adrenal axis and neuronal activation in lean and obese Zucker ratsChristian Doyon
Direction de la recherche, , 2725 Chemin Sainte-Foy, , , Canada, G1V 4G5
Diabetes 55:3403-10. 2006..This, however, does not prevent CB(1) antagonism from exerting beneficial effects on energy and glucose metabolism...
The corticotropin-releasing factor system as a potential target for antiobesity drugsChristian Doyon
, , , Canada
Drug News Perspect 17:505-17. 2004..Based on recent progress, we conclude that the CRF(2) receptor could be a potential target for the development of an antiobesity drug...
Peroxisome proliferator-activated receptor-gamma-mediated positive energy balance in the rat is associated with reduced sympathetic drive to adipose tissues and thyroid statusWilliam T Festuccia
Laval Hospital Research Centre, Faculty of Medicine, Laval University, Laval Hospital d Youville Y3110, 2725 Chemin Sainte Foy, Quebec, Canada G1V 4G5
Endocrinology 149:2121-30. 2008....
Fenfluramine-induced activation of the immediate-early gene c-fos in the striatum: possible interaction between serotonin and dopamineC Rouillard
Department of Pharmacology, Laval University, Quebec, Canada
Brain Res Mol Brain Res 37:105-15. 1996..Moreover, the mechanism by which fenfluramine induces c-fos expression in the striatum differs from other brain regions...
Is visceral obesity a physiological adaptation to stress?V Drapeau
Division of Kinesiology, Laval University, Ste Foy, Quebec, Canada
Panminerva Med 45:189-95. 2003..In this context, visceral obesity treatment should focus on stress management and weight loss strategies in order to stop this vicious circle...
Responses of adipose and muscle lipoprotein lipase to chronic infection and subsequent acute lipopolysaccharide challengeFrederic Picard
Centre de recherche de l Hôpital Laval and Centre de recherche sur le métabolisme énergétique, Département d anatomie et physiologie, Faculte de Medecine, Universite Laval, Quebec, Quebec, Canada G1K 7P4
Clin Diagn Lab Immunol 9:771-6. 2002..gondii infection favors TG partitioning towards adipose tissue; and (iii) skeletal muscle LPL is a key determinant of the acute response of triglyceridemia to LPS...
Interaction of CRH and energy balance in the modulation of brain stimulation rewardStephanie Fulton
Center for Studies in Behavioural Neurobiology, Concordia University, , , Canada
Behav Neurosci 116:651-9. 2002..These findings provide further evidence that sensitivity to food restriction is an important factor in determining the influence of hormones and neuropeptides on brain reward circuitry...
Contribution of the vagus nerve and lamina terminalis to brain activation induced by refeedingElena Timofeeva
, , Canada
Eur J Neurosci 22:1489-501. 2005..The results of the present study suggest that the postprandial activation of the brain requires the integrity of both the vagal- and lamina terminalis-associated pathways...
Neuronal activation and corticotropin-releasing hormone expression in the brain of obese (fa/fa) and lean (fa/?) Zucker rats in response to refeedingElena Timofeeva
Centre de Recherche de l Hôpital Laval et Centre de Recherche sur le Métabolisme Energétique de l Université Laval, Quebec, Canada, G1K 7P4
Eur J Neurosci 15:1013-29. 2002..The most apparent of these differences was seen in the lateral hypothalamus in which refeeding failed to up-regulate CRH expression in obese rats...
Outdoor temperature, age, sex, body mass index, and diabetic status determine the prevalence, mass, and glucose-uptake activity of 18F-FDG-detected BAT in humansVeronique Ouellet
Centre de Recherche de l Institut Universitaire de Cardiologie et de Pneumologie de Quebec, Faculty of Medicine, Universite Laval, Quebec, Quebec, Canada
J Clin Endocrinol Metab 96:192-9. 2011....
Brain activation following peripheral administration of the GLP-1 receptor agonist exendin-4Elena Dana Baraboi
Merck Frosst Canadian Institutes of Health Research Chair in Obesity and Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec, Canada
Am J Physiol Regul Integr Comp Physiol 301:R1011-24. 2011....
Involvement of the opioid system in the orexigenic and hedonic effects of melanin-concentrating hormoneCarlos Andres Lopez
Centre de Recherche de l Institut Universitaire de Cardiologie et de Pneumologie de Quebec, Universite Laval, Quebec, Canada
Am J Physiol Regul Integr Comp Physiol 301:R1105-11. 2011..Overall, the present study provides evidence to link the MCH and opioid systems in the food intake behavior...
Cortisol response to the Trier Social Stress Test in obese and reduced obese individualsFanny Therrien
Institut Universitaire de Cardiologie et de Pneumologie de Quebec, Universite Laval, Quebec, Canada
Biol Psychol 84:325-9. 2010..These finding suggest that weight status in men influences cortisol reactivity to a psychological stress and the different responses seen among genders could be linked to the different fat distributions that characterize men and women...
