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Patel DI, Abuchowski K, Sheikh B, Rivas P, Musi N, Kumar AP. Exercise preserves muscle mass and force in a prostate cancer mouse model. Eur J Transl Myol 2019; 29:8520. [PMID: 31908747 PMCID: PMC6926432 DOI: 10.4081/ejtm.2019.8520] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 09/27/2019] [Indexed: 02/07/2023] Open
Abstract
The purpose of this study was to examine the effects of exercise in modulating biomarkers of sarcopenia in a treatment naïve transgenic adenocardinoma of the mouse prostate (TRAMP) model. Thirty TRAMP mice were randomized to either exercise (voluntary wheel running) or no-treatment control group for a period of 20 weeks. During necropsy, gastrocnemius muscles and prostate tumors were harvested and weighed. Gastrocnemius concentrations of myostatin, insulin-like growth factor (IGF)-1 and tumor necrosis factor (TNF)-α were quantified. Exercise mice had greater muscle mass than controls (p=0.04). Myostatin was significantly lower in the exercise group compared to controls (p=0.01). Exercise mice maintained forelimb grip force while control mice had a significaint decrease (p=0.01). No significant difference was observed in pre-post all limb grip strength. Further, forelimb and all limb grip strength was negatively associated with tumor mass (p<0.01).
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Affiliation(s)
- Darpan I Patel
- School of Nursing, The University of Texas Health at San Antonio, San Antonio, TX, USA.,Mays Cancer Center at UT Health San Antonio MD Anderson Cancer Center, The University of Texas Health at San Antonio, San Antonio, TX, USA.,Barshop Institute for Longevity and Aging Studies, The University of Texas Health at San Antonio, San Antonio, TX, USA
| | - Kira Abuchowski
- School of Nursing, The University of Texas Health at San Antonio, San Antonio, TX, USA
| | - Bilal Sheikh
- School of Nursing, The University of Texas Health at San Antonio, San Antonio, TX, USA
| | - Paul Rivas
- Department of Urology, School of Medicine, The University of Texas Health at San Antonio, San Antonio, TX, USA
| | - Nicolas Musi
- Barshop Institute for Longevity and Aging Studies, The University of Texas Health at San Antonio, San Antonio, TX, USA.,School of Medicine, The University of Texas Health at San Antonio, San Antonio, TX, USA.,The Geriatric Research Education and Clinical Center, South Texas Veterans Health Care System, San Antonio, TX, USA
| | - A Pratap Kumar
- Mays Cancer Center at UT Health San Antonio MD Anderson Cancer Center, The University of Texas Health at San Antonio, San Antonio, TX, USA.,Department of Urology, School of Medicine, The University of Texas Health at San Antonio, San Antonio, TX, USA
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Patel DI, Wallace D, Abuchowski K, Rivas P, Gallegos A, Musi N, Kumar AP. Nexrutine ® preserves muscle mass similar to exercise in prostate cancer mouse model. Physiol Rep 2019; 7:e14217. [PMID: 31456341 PMCID: PMC6712237 DOI: 10.14814/phy2.14217] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/06/2019] [Accepted: 08/07/2019] [Indexed: 12/31/2022] Open
Abstract
Muscle loss is a debilitating side effect to prostate cancer (PCa) experienced by nearly 60% of men. The purpose of this study was to test the hypothesis that Nexrutine® , a bark extract from the Phellodendrum amurense, can protect against prostate cancer induced muscle loss in a similar manner as exercise, using the transgenic adenocarcinoma of mouse prostate (TRAMP) model. Forty-five, 8- to 10-week old TRAMP mice were randomized to either control, Nexrutine® (600 mg/kg pelleted in chow) or exercise (voluntary wheel running). Mice were serially sacrificed at weeks 4, 8, 12, and 20, at which time either the left or right gastrocnemius muscle was harvested, weighted, and frozen. Proteolysis inducing factor (PIF), ubiquitin, and NF-κB concentrations were quantified using ELISA kits. Nexrutine® and exercise were equally able to protect TRAMP mice against PCa-induced muscle loss (P = 0.04). Both interventions decreased intramuscular PIF concentrations at 20 weeks compared to control (P < 0.05). A treatment effect was also observed when all time points were combined with exercise significantly lowering PIF concentrations (P < 0.01). Exercise significantly lowered intramuscular ubiquitin concentrations in weeks 4, 8, and 20 compared to control mice (P < 0.001). A treatment effect was also observed with exercise significantly lowering ubiquitin compared to control mice (P < 0.001). No significant changes were observed for NF-κB. The results of this investigation demonstrate that PCa-induced muscle loss can be attenuated with the herbal supplement Nexrutine® . This investigation provides preliminary evidence to support continued research into Nexrutine® as a potential exercise analog in protecting against muscle loss.
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Affiliation(s)
- Darpan I. Patel
- School of NursingUniversity of Texas Health Science Center at San AntonioSan AntonioTexas
- Barshop Institute for AgingUniversity of Texas Health Science Center at San AntonioSan AntonioTexas
- Mays Cancer Center at UT Health San AntonioSan AntonioTexas
| | - Derek Wallace
- School of NursingUniversity of Texas Health Science Center at San AntonioSan AntonioTexas
| | - Kira Abuchowski
- School of NursingUniversity of Texas Health Science Center at San AntonioSan AntonioTexas
| | - Paul Rivas
- Department of Urology, School of MedicineUniversity of Texas Health Science Center at San AntonioSan AntonioTexas
| | - Amber Gallegos
- School of NursingUniversity of Texas Health Science Center at San AntonioSan AntonioTexas
| | - Nicolas Musi
- Barshop Institute for AgingUniversity of Texas Health Science Center at San AntonioSan AntonioTexas
| | - Addanki Pratap. Kumar
- Mays Cancer Center at UT Health San AntonioSan AntonioTexas
- Department of Urology, School of MedicineUniversity of Texas Health Science Center at San AntonioSan AntonioTexas
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Patel DI, Abuchowski K, Bedolla R, Rivas P, Musi N, Reddick R, Kumar AP. Exercise Suppresses Prostate Tumor Aggressiveness by Modulating Inflammatory Cytokines. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000562884.59231.fa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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