Pino 2017 Int J Obes (Lond)

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Pino MF, Divoux A, Simmonds AV, Smith SR, Sparks LM (2017) Investigating the effects of Orexin-A on thermogenesis in human deep neck brown adipose tissue. Int J Obes (Lond) 41:1646-53.

» PMID: 28674442

Pino MF, Divoux A, Simmonds AV, Smith SR, Sparks LM (2017) Int J Obes (Lond)

Abstract: Despite successful pre-clinical testing, 85% of early clinical trials for novel drugs fail. Most futilities originate from molecular mechanisms of the drug(s) tested. It is critically important to develop validated human cell-based model systems in which animal-based research can be translated in order to complement the preclinical in vivo findings prior to implementation of a clinical trial. Obesity is associated with reduced circulating levels of Orexin-A (OX-A) in humans. OX-A increases thermogenesis in rodent brown adipose tissue (BAT), yet this phenomenon has not been explored in humans.

We established a cell-based model system of human brown and white adipocytes and tested the effects of OX-A on thermogenesis.

Contrary to published in vivo and in vitro reports in rodents, OX-A treatment alone or in combination with an adrenergic stimulus did not enhance thermogenesis nor its related transcriptional program in a human in vitro model of brown adipocytes nor adipose tissue explants.

Translating preclinical findings in human model systems poses a challenge that must be overcome for the development of effective therapeutic compounds and targets.


Bioblast editor: Kandolf G O2k-Network Lab: US FL Orlando Sparks LM, US FL Orlando Translational Research Institute


Labels: MiParea: Respiration  Pathology: Obesity 

Organism: Human  Tissue;cell: Fat  Preparation: Intact cells 


Coupling state: LEAK, ROUTINE 

HRR: Oxygraph-2k 

Labels, 2017-07