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In HD patients, energy-related manifestations such as modulation of weight during entire course of disease with energy deficit at terminal stage have been reported, however, underlying reason remains elusive till date. Lipids, carbohydrate and protein constitute a predominant fraction of body\u2019s energy reservoir and perturbation in their homeostasis may influence weight. To discern role of these energy molecules in weight alteration, we quantified them in an <jats:italic>in vivo<\/jats:italic> transgenic <jats:italic>Drosophila<\/jats:italic> model of HD. We document that diseased flies exhibit change in weight due to an altered lipid metabolism, as evident from considerably high lipid levels at the time of disease onset followed by a pathologic decline at end-stage. An alteration in intracellular lipid droplet size suggested altered cellular lipid turnover. Furthermore, diseased flies displayed substantial changes in carbohydrate and protein content. Interestingly, alteration in weight and lipid levels are independent of the feeding pattern in diseased condition and exhibit weak correlation with insulin-like peptide or adipokinetic hormone producing cells. We propose that therapeutic intervention aimed at restoring lipid levels and associated metabolic pathways may improve longevity and quality of patient\u2019s life.<\/jats:p>","DOI":"10.1038\/srep31411","type":"journal-article","created":{"date-parts":[[2016,8,10]],"date-time":"2016-08-10T09:46:06Z","timestamp":1470822366000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":51,"title":["Altered lipid metabolism in Drosophila model of Huntington\u2019s disease"],"prefix":"10.1038","volume":"6","author":[{"given":"Kumari","family":"Aditi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mallikarjun N.","family":"Shakarad","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Namita","family":"Agrawal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2016,8,10]]},"reference":[{"key":"BFsrep31411_CR1","doi-asserted-by":"crossref","unstructured":"The Huntington\u2019s Disease Collaborative Research Group. 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