Divergence of melanocortin pathways in the control of food intake and energy expenditure

Article Abstract:

A loxP-modified, null melanocortin-4-receptors (MC4R) allele that can be reactivated by Cre-recombinanse is generated to identify the functionality relevant sites of MC4R expression. The findings reveal that MC4Rs in the paraventricular nucleus of the hypothalamus and/or the amygdala control food intake but that MC4Rs elsewhere control energy expenditure.

author: Lowell, Bradford B., Boss, Olivier, Elmquist, Joel K., Williams, Todd, Balthasar, Nina, Dalgaard, Louise T., Mountjoy, Kathleen, Kishi, Toshiro, Lee, Charlotte E., Jia Yu, Funahashi, Hisayuki, Ferreira, Manuel, Tang, Vinsee, McGovern, Robert A., Kenny, Christopher D., Christiansen, Lauryn M., Edelstein, Elizabeth, Aschkenasi, Carl, Chen-yu Zhang
Energy metabolism, Bioenergetics, Hypothalamus, Amygdala (Brain)

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Defects in adaptive energy metabolism with CNS-linked hyperactivity in PGC-1 alpha null mice

Article Abstract:

PGC-alpha is a coactivator of nuclear receptors and other transcription factors that regulates several metabolic processes, including mitochondrial biogenesis and respiration, hepatic gluconeogenesis, and muscle fiber-type switching. The central role for PGC-1 alpha in the control of energy metabolism is illustrated.

author: Lowell, Bradford B., Spiegelman, Bruce M., Cooper, Marcus P., Mootha, Vamsi K., Shulman, Gerald I., Wu, Zhidan, St-Pierre, Julie, Lin, Jiandie, Lindenberg, Katrin S., Fan, Melina C., Zavacki, Ann Marie, Rohas, Lindsay M., Jager, Sibylle, Zhang, Chen-yu, Krainc, Dimitri, Cinti, Saverio, Tarr, Paul T., Wu, Pei-Hsuan
Genetic transcription, Transcription (Genetics), Origin of life, Gluconeogenesis

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Uncoupling protein-2 negatively regulates insulin secretion and is a major link between obesity, beta cell dysfunction, and type 2 diabetes

Article Abstract:

Research has been conducted on the beta cell sense glucose which stimulates insulin secretion. The role of the uncoupling protein-2 in regulating insulin secretion has been investigated and the results are reported.

author: Lowell, Bradford B., Peroni, Odile, Boss, Olivier, Shulman, Gerald I., Zhang, Chen-Yu, Baffy, Gyorgy, Perret, Pascale, Krauss, Stefan, Grujic, Danica, Hagen, Thilo, Vidal-Puig, Antonio J., Kim, Young-Bum, Zheng, Xin Xiao, Wheeler, Michael B., Chan, Catherine B.
United States, Canada, Analysis, Causes of, Physiological aspects, Obesity, Type 2 diabetes, Proteins, Secretion, Cell research, Cytological research, Insulin, Pancreatic beta cells

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subjects list: Research
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