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Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cell+Host+Microbe 2016 ; 19 (6): 837-48 Nephropedia Template TP
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Trypanosoma brucei Parasites Occupy and Functionally Adapt to the Adipose Tissue in Mice #MMPMID27237364
Trindade S; Rijo-Ferreira F; Carvalho T; Pinto-Neves D; Guegan F; Aresta-Branco F; Bento F; Young S; Pinto A; Van Den Abbeele J; Ribeiro R; Dias S; Smith T; Figueiredo L
Cell Host Microbe 2016[Jun]; 19 (6): 837-48 PMID27237364show ga
Trypanosoma brucei is an extracellular parasite that causes sleeping sickness. In mammalian hosts, trypanosomes are thought to exist in two major niches: early in infection, they populate the blood; later, they breach the blood-brain barrier. Working with a well-established mouse model, we discovered that adipose tissue constitutes a third major reservoir for T. brucei. Parasites from adipose tissue, here termed adipose tissue forms (ATFs), can replicate and were capable of infecting a naive animal. ATFs were transcriptionally distinct from bloodstream forms, and the genes upregulated included putative fatty acid ?-oxidation enzymes. Consistent with this, ATFs were able to utilize exogenous myristate and form ?-oxidation intermediates, suggesting that ATF parasites can use fatty acids as an external carbon source. These findings identify the adipose tissue as a niche for T. brucei during its mammalian life cycle and could potentially explain the weight loss associated with sleeping sickness.