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Front Pharmacol. 2016 Sep 26;7:336. doi: 10.3389/fphar.2016.00336. eCollection 2016.

Preclinical .

Frontiers in pharmacology

Pasquina Marzola, Federico Boschi, Francesco Moneta, Andrea Sbarbati, Carlo Zancanaro

Affiliations

  1. Department of Computer Science, University of Verona, Verona Italy.
  2. Preclinical Imaging Division - Bruker BioSpin, Bruker Italia s.r.l, Milano Italy.
  3. Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona Italy.

PMID: 27725802 PMCID: PMC5035738 DOI: 10.3389/fphar.2016.00336

Abstract

Localization, differentiation, and quantitative assessment of fat tissues have always collected the interest of researchers. Nowadays, these topics are even more relevant as obesity (the excess of fat tissue) is considered a real pathology requiring in some cases pharmacological and surgical approaches. Several weight loss medications, acting either on the metabolism or on the central nervous system, are currently under preclinical or clinical investigation. Animal models of obesity have been developed and are widely used in pharmaceutical research. The assessment of candidate drugs in animal models requires non-invasive methods for longitudinal assessment of efficacy, the main outcome being the amount of body fat. Fat tissues can be either quantified in the entire animal or localized and measured in selected organs/regions of the body. Fat tissues are characterized by peculiar contrast in several imaging modalities as for example Magnetic Resonance Imaging (MRI) that can distinguish between fat and water protons thank to their different magnetic resonance properties. Since fat tissues have higher carbon/hydrogen content than other soft tissues and bones, they can be easily assessed by Computed Tomography (CT) as well. Interestingly, MRI also discriminates between white and brown adipose tissue (BAT); the latter has long been regarded as a potential target for anti-obesity drugs because of its ability to enhance energy consumption through increased thermogenesis. Positron Emission Tomography (PET) performed with

Keywords: BAT; CT imaging; MRI imaging; PET imaging; fat

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