排序方式: 共有4条查询结果,搜索用时 15 毫秒
1
1.
Dopamine D3 receptor stimulation promotes the proliferation of cells derived from the post-natal subventricular zone 总被引:1,自引:0,他引:1
Coronas V Bantubungi K Fombonne J Krantic S Schiffmann SN Roger M 《Journal of neurochemistry》2004,91(6):1292-1301
In the adult mammalian brain, neural stem cells persist in the subventricular zone (SVZ) where dopamine D3 receptors are expressed. Here, we demonstrate that addition of 1 microm apomorphine increases cell numbers in post-natal SVZ cell cultures. This effect was prevented by a co-treatment with haloperidol, sulpiride or U-99194A, a D3-preferring antagonist, and mimicked by the dopamine D3 receptor selective agonist 7-hydroxy-dipropylaminotetralin (7-OH-DPAT). EC50 values were 4.04 +/- 1.54 nm for apomorphine and 0.63 +/- 0.13 nm for 7-OH-DPAT, which fits the pharmacological profile of the D3 receptor. D3 receptors were detected in SVZ cells by RT-PCR and immunocytochemistry. D3 receptors were expressed in numerous beta-III tubulin immunopositive cells. The fraction of apoptotic nuclei remained unchanged following apomorphine treatment, thus ruling out any possible effect on cell survival. In contrast, proliferation was increased as both the proportion of nuclei incorporating bromo-deoxyuridine and the expression of the cell division marker cyclin D1 were enhanced. These findings provide support for a regulatory role of dopamine over cellular dynamics in post-natal SVZ. 相似文献
2.
Wouters K Cudejko C Gijbels MJ Fuentes L Bantubungi K Vanhoutte J Dièvart R Paquet C Bouchaert E Hannou SA Gizard F Tailleux A de Winther MP Staels B Paumelle R 《PloS one》2012,7(3):e32440
Objective
A genomic region near the CDKN2A locus, encoding p16INK4a, has been associated to type 2 diabetes and atherosclerotic vascular disease, conditions in which inflammation plays an important role. Recently, we found that deficiency of p16INK4a results in decreased inflammatory signaling in murine macrophages and that p16INK4a influences the phenotype of human adipose tissue macrophages. Therefore, we investigated the influence of immune cell p16INK4a on glucose tolerance and atherosclerosis in mice.Methods and Results
Bone marrow p16INK4a-deficiency in C57Bl6 mice did not influence high fat diet-induced obesity nor plasma glucose and lipid levels. Glucose tolerance tests showed no alterations in high fat diet-induced glucose intolerance. While bone marrow p16INK4a-deficiency did not affect the gene expression profile of adipose tissue, hepatic expression of the alternative markers Chi3l3, Mgl2 and IL10 was increased and the induction of pro-inflammatory Nos2 was restrained on the high fat diet. Bone marrow p16INK4a-deficiency in low density lipoprotein receptor-deficient mice did not affect western diet-induced atherosclerotic plaque size or morphology. In line, plasma lipid levels remained unaffected and p16INK4a-deficient macrophages displayed equal cholesterol uptake and efflux compared to wild type macrophages.Conclusion
Bone marrow p16INK4a-deficiency does not affect plasma lipids, obesity, glucose tolerance or atherosclerosis in mice. 相似文献3.
Bantubungi K Prawitt J Staels B 《The Journal of steroid biochemistry and molecular biology》2012,130(3-5):126-137
Today, we are witnessing a rising incidence of obesity worldwide. This increase is due to a sedentary life style, an increased caloric intake and a decrease in physical activity. Obesity contributes to the appearance of type 2 diabetes, dyslipidemia and cardiovascular complications due to atherosclerosis, and nephropathy. Therefore, the development of new therapeutic strategies may become a necessity. Given the metabolism controlling properties of nuclear receptors in peripheral organs (such as liver, adipose tissues, pancreas) and their implication in various processes underlying metabolic diseases, they constitute interesting therapeutic targets for obesity, dyslipidemia, cardiovascular disease and type 2 diabetes. The recent identification of the central nervous system as a player in the control of peripheral metabolism opens new avenues to our understanding of the pathophysiology of obesity and type 2 diabetes and potential novel ways to treat these diseases. While the metabolic functions of nuclear receptors in peripheral organs have been extensively investigated, little is known about their functions in the brain, in particular with respect to brain control of energy homeostasis. This review provides an overview of the relationships between nuclear receptors in the brain, mainly at the hypothalamic level, and the central regulation of energy homeostasis. In this context, we will particularly focus on the role of PPARα, PPARγ, LXR and Rev-erbα. 相似文献
4.
Yann Deleye Alexia Karen Cotte Sarah Anissa Hannou Nathalie Hennuyer Lucie Bernard Bruno Derudas Sandrine Caron Vanessa Legry Emmanuelle Vallez Emilie Dorchies Nathalie Martin Steve Lancel Jean Sbastien Annicotte Kadiombo Bantubungi Albin Pourtier Violeta Raverdy Franois Pattou Philippe Lefebvre Corinne Abbadie Bart Staels Joel T. Haas Rjane Paumelle 《The Journal of biological chemistry》2020,295(50):17310
1