Scan Science and Technology
Contact Leading Edge Experts & Companies
The Experts below are selected from a list of 2121 Experts worldwide ranked by ideXlab platform
Samuel N. Breit – 1st expert on this subject based on the ideXlab platform
Targeting the divergent TGFβ superfamily cytokine MIC-1/GDF15 for therapy of anorexia/cachexia syndromesCurrent Opinion in Supportive and Palliative Care, 2018Co-Authors: Vicky Wang-wei Tsai, David A. Brown, Samuel N. BreitAbstract:
Purpose of reviewTo review recent finding on MIC-1/GDF15 and re-evaluate it as a potential target for the therapy of anorexia/cachexia syndromes.Recent findingsMIC-1/GDF15 consistently induces anorexia/cachexia in animal models. Its actions on brainstem feeding centers leads to anorexia, inducing pr
Anorexia-Cachexia and obesity treatment may be two sides of the same coin: role of the TGF-b superfamily cytokine MIC-1/GDF15.International Journal of Obesity, 2015Co-Authors: Vicky Wang-wei Tsai, David A. Brown, A Salis, Samuel N. BreitAbstract:
Anorexia–cachexia and obesity treatment may be two sides of the same coin: role of the TGF-b superfamily cytokine MIC-1/GDF15
Anorexia/cachexia of chronic diseases: a role for the TGF-β family cytokine MIC-1/GDF15Journal of Cachexia Sarcopenia and Muscle, 2012Co-Authors: Vicky W. W. Tsai, David A. Brown, Yasmin Husaini, Rakesh Manandhar, Hong Ping Zhang, Kate Harriott, Lele Jiang, Amanda Sainsbury, Samuel N. BreitAbstract:
Anorexia/cachexia is a common and currently mostly untreatable complication of advanced cancer. It is also a feature of a number of chronic diseases and can also occur as part of the normal ageing process. Over recent years, two different, but sometimes overlapping, processes have been identified to mediate anorexia/cachexia: those that act primarily on muscle reducing its mass and function, and processes that decrease nutrition leading to loss of both fat and muscle. In the case of at least some cancers, the latter process is sometimes driven by marked overexpression of macrophage inhibitory cytokine-1/growth differentiation factor 15 (MIC-1/GDF15). MIC-1/GDF15 is a transforming growth factor beta (TGF-β) family cytokine that is found in the serum of all normal individuals at an average concentration of about 0.6 ng/ml. Its increased expression in both cancers and other diseases can result in 10–100-fold or more elevation of its serum levels. In experimental animals, serum MIC-1/GDF15 levels at the lower end of this range induce anorexia by direct actions of the circulating cytokine on feeding centres in the brain. Mice with tumours overexpressing MIC-1/GDF15 display decreased food intake, loss of lean and fat mass and cachexia. That this process also mediates anorexia/cachexia in humans is suggested by the fact that there is a direct correlation between the degree of serum MIC-1/GDF15 elevation and the amount of cancer-related weight loss, the first such relationship demonstrated. Further, in experimental animals, weight loss can be reversed by neutralisation of tumour-produced MIC-1/GDF15 with a specific monoclonal antibody, suggesting the possibility of effective therapy of patients with the devastating complication of anorexia/cachexia.
S N Breit – 2nd expert on this subject based on the ideXlab platform
Anorexia–cachexia and obesity treatment may be two sides of the same coin: role of the TGF-b superfamily cytokine MIC-1/GDF15International Journal of Obesity, 2016Co-Authors: V W W Tsai, D A Brown, A Salis, S N BreitAbstract:
Anorexia–cachexia associated with cancer and other diseases is a common and often fatal condition representing a large area of unmet medical need. It occurs most commonly in advanced cancer and is probably a consequence of molecules released by tumour cells, or tumour-associated interstitial or immune cells. These may then act directly on muscle to cause atrophy and/or may cause anorexia, which then leads to loss of both fat and lean mass. Although the aetiological triggers for this syndrome are not well characterized, recent data suggest that MIC-1/GDF15, a transforming growth factor-beta superfamily cytokine produced in large amounts by cancer cells and as a part of other disease processes, may be an important trigger. This cytokine acts on feeding centres in the hypothalamus and brainstem to cause anorexia leading to loss of lean and fat mass and eventually cachexia. In animal studies, the circulating concentrations of MIC-1/GDF15 required to cause this syndrome are similar to those seen in patients with advanced cancer, and at least some epidemiological studies support an association between MIC-1/GDF15 serum levels and measures of nutrition. This article will discuss its mechanisms of central appetite regulation, and the available data linking this action to anorexia–cachexia syndromes that suggest it is a potential target for therapy of cancer anorexia–cachexia and conversely may also be useful for the treatment of severe obesity.
David Cella – 3rd expert on this subject based on the ideXlab platform
Comprehensive validation of the functional assessment of anorexia/cachexia therapy (FAACT) anorexia/cachexia subscale (A/CS) in lung cancer patients with involuntary weight loss.Quality of Life Research, 2019Co-Authors: Heather L. Gelhorn, Katharine S. Gries, Rebecca M. Speck, Elizabeth M. Duus, Richard K. Bourne, Dimple Aggarwal, David CellaAbstract:
Comprehensive (qualitative and quantitative) assessments of the 12-item functional assessment of anorexia/cachexia therapy (FAACT) anorexia/cachexia subscale (A/CS) and relevant subscales were undertaken for use in constructing potential endpoints in clinical trials of non-small cell lung cancer (NSCLC) with involuntary weight loss. Eleven participants (≥ 18 years) from six clinical sites with a diagnosis of stage III unresectable or stage IV NSCLC and involuntary weight loss (either ≥ 5% body weight loss within six months prior to screening or screening BMI
Validation and real-world assessment of the Functional Assessment of Anorexia-Cachexia Therapy (FAACT) scale in patients with advanced non-small cell lung cancer and the cancer Anorexia-Cachexia syndrome (CACS)Supportive Care in Cancer, 2015Co-Authors: Thomas W. Leblanc, David Cella, Greg Samsa, Steven Wolf, Susan C. Locke, Amy P. AbernethyAbstract:
Patients with cancer Anorexia-Cachexia syndrome (CACS) suffer a significant symptom burden, impaired quality of life (QoL), and shorter survival. Measurement of QoL impairments related to CACS is thereby important both in clinical practice and in research. We aimed to further validate the Functional Assessment of Anorexia-Cachexia Therapy (FAACT) scale in an advanced lung cancer population.
Re-validation and shortening of the Functional Assessment of Anorexia/Cachexia Therapy (FAACT) questionnaireQuality of Life Research, 2000Co-Authors: J. M. Ribaudo, David Cella, Stephen Lloyd, Elizabeth A. Hahn, N S Tchekmedyian, J. Von Roenn, William T. LeslieAbstract:
Purpose: The original Functional Assessment of Anorexia/Cachexia Therapy (FAACT) was designed to measure general aspects of quality of life (QOL) as well as specific anorexia/cachexia-related concerns. Our primary purpose was to reduce the number of anorexia/cachexia subscale items in a manner that either retains or improves reliability, validity and precision. Methods: The FAACT was administered using an interactive computer program that allowed immediate entry of the data. A total of 213 patients were recruited. Results: A combined empirical and conceptual approach led to the reduction of the anorexia/cachexia subscale (A/CS) from 18 to 12 items. A 26-item trial outcome index (TOI) combining physical well-being (PWB), functional well-being (FWB), and the A/CS-12 was highly reliable and sensitive to change in performance status rating (PSR). We found that PWB, FWB, and A/CS-12 subscales performed differently. Specifically, PWB and FWB scores decreased in patients whose (PSR) worsened. However, although A/CS-12 scores were responsive to change in PSR over time, average A/CS-12 scores of all patients, even those whose PSR worsened, improved over the course of treatment. Conclusions: Elimination of six items from the anorexia/cachexia subscale of the FAACT was accomplished without loss of internal consistency or sensitivity to change in performance status. The A/CS-12 subscale provides unique, important information not captured by a generic chronic illness questionnaire.