Brown adipose tissue is not associated with cachexia or increased mortality in a retrospective study of patients with cancer Journal Article
| Authors: | Eljalby, M.; Huang, X.; Becher, T.; Wibmer, A. G.; Jiang, C. S.; Vaughan, R.; Schöder, H.; Cohen, P. |
| Article Title: | Brown adipose tissue is not associated with cachexia or increased mortality in a retrospective study of patients with cancer |
| Abstract: | Although brown fat is strongly associated with a constellation of cardiometabolic benefits in animal models and humans, it has also been tied to cancer cachexia. In humans, cancer-associated cachexia increases mortality, raising the possibility that brown fat in this context may be associated with increased cancer death. However, the effect of brown fat on cancer-associated cachexia and survival in humans remains unclear. Here, we retrospectively identify patients with and without brown fat on fluorodeoxyglucose (18F-FDG) positron-emission tomography (PET) scans obtained as part of routine cancer care and assemble a cohort to address these questions. We did not find an association between brown fat status and cachexia. Furthermore, we did not observe an association between brown fat and increased mortality in patients with cachexia. Our analyses controlled for confounding factors including age at cancer diagnosis, sex, body mass index, cancer site, cancer stage, outdoor temperature, comorbid conditions (heart failure, type 2 diabetes mellitus, coronary artery disease, hypertension, dyslipidemia, cerebrovascular disease), and β-blocker use. Taken together, our results suggest that brown fat is not linked to cancer-associated cachexia and does not worsen overall survival in patients with cachexia.NEW & NOTEWORTHY This study finds that brown fat is not linked to cancer-associated cachexia. Moreover, this work shows that brown fat does not worsen overall survival in patients with cachexia. |
| Keywords: | retrospective studies; positron emission tomography; neoplasm; neoplasms; animal; animals; diagnostic imaging; retrospective study; brown fat; fluorodeoxyglucose f 18; fluorodeoxyglucose f18; positron-emission tomography; cachexia; non insulin dependent diabetes mellitus; diabetes mellitus, type 2; complication; brown adipose tissue; procedures; adipose tissue, brown; cancer; humans; human |
| Journal Title: | American Journal of Physiology - Endocrinology and Metabolism |
| Volume: | 324 |
| Issue: | 2 |
| ISSN: | 0193-1849 |
| Publisher: | American Physiological Society |
| Date Published: | 2023-02-02 |
| Start Page: | E144 |
| End Page: | E153 |
| Language: | English |
| DOI: | 10.1152/ajpendo.00187.2022 |
| PUBMED: | 36576355 |
| PROVIDER: | scopus |
| PMCID: | PMC9902220 |
| DOI/URL: | |
| Notes: | The MSK Cancer Center Support Grant (P30 CA008748) is acknowledged in the PDF -- Source: Scopus |
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