Cypess et al3 reported that BAT activity is lower in obese indiv

Cypess et al.3 reported that BAT activity is lower in obese individuals compared to lean subjects. In the same study, male and female subjects have different amount of BAT. Women were found to have higher amounts of BAT than in men. This might be an explanation of why men are sensitive to obesity-related complications

such as atherosclerosis, beyond other known factors (hormonal, genetic, environmental). Virtanen et al.,5 by using fluoro-deoxyglucose positron emission tomography scan, also observed that a higher amount of BAT is inversely correlated with obesity with aging. We also learned that many animal studies evaluating the relation of obesity and BAT demonstrated that BAT Nutlin-3 nmr activity and UCP1

JQ1 nmr expression are important parameters for developing obesity and insulin resistance.2, 6-8 With this knowledge of BAT, targeted therapies are on the way. This may be possible either through induction of already available BAT (with beta agonism and cold) in the body or changing the genetic structure for differentiating tissue from the preadipocyte phase to BAT, involving peroxisome proliferator-activated receptor-γ and other transcriptional regulators such as PR domain–containing 16.2, 9 Petrovic et al.10 treated primary cultures of mouse brown preadipocytes with rosiglitazone and found that it is a useful strategy to recruit brown adipocytes from preadipocytes. As the authors mentioned in the review, some obese patients are metabolically normal and do not have a fatty liver. In addition, some patients with fatty liver who have no extra risk factors from other patients have a poor prognosis and rapidly progress to end-stage liver disease. We generally think that obesity,

metabolic syndrome, and fatty liver are well-known variables Loperamide in obesity pathogenesis. However, it is obvious that there are some overlooked points in the equation. In this regard, BAT may be an explanation. It may serve as both a prognostic and therapeutic tool for clinicians.11 The association between fatty liver and BAT has never been studied before, and we thought that future studies will reveal the role of BAT in nonalcoholic fatty liver disease. In addition, we believe that BAT is a promising target for coping with obesity and its complications. Tugrul Purnak M.D.*, Ersan Ozaslan M.D.*, Cumali Efe M.D.†, Hasan Sevimler M.D.‡, * Department of Gastroenterology, Ankara Numune Education and Research Hospital, Ankara, Turkey, † Department of Internal Medicine, Ankara Numune Education and Research Hospital, Ankara, Turkey, ‡ Department of Internal Medicine, Alanya Government Hospital, Alanya/Antalya, Turkey. “
“We read with great interest the article by Joka et al.

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