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Abid MSR, Bredahl EC, Clifton AD, Qiu H, Andrews MT, Checco JW. Proteomic Identification of Seasonally Expressed Proteins Contributing to Heart Function and the Avoidance of Skeletal Muscle Disuse Atrophy in a Hibernating Mammal. J Proteome Res 2024; 23:215-225. [PMID: 38117800 PMCID: PMC10843731 DOI: 10.1021/acs.jproteome.3c00540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Hibernation in the thirteen-lined ground squirrel (Ictidomys tridecemlineatus) takes place over 4-6 months and is characterized by multiday bouts of hypothermic torpor (5-7 °C core body temperature) that are regularly interrupted every 1-2 weeks by brief (12-24 h) normothermic active periods called interbout arousals. Our goal was to gain insight into the molecular mechanisms that underlie the hibernator's ability to preserve heart function and avoid the deleterious effects of skeletal muscle disuse atrophy over prolonged periods of inactivity, starvation, and near-freezing body temperatures. To achieve this goal, we performed organelle enrichment of heart and skeletal muscle at five seasonal time points followed by LC-MS-based label-free quantitative proteomics. In both organs, we saw an increase in the levels of many proteins as ground squirrels transition from an active state to a prehibernation state in the fall. Interestingly, seasonal abundance patterns identified DHRS7C, SRL, TRIM72, RTN2, and MPZ as potential protein candidates for mitigating disuse atrophy in skeletal muscle, and ex vivo contractile mechanics analysis revealed no deleterious effects in the ground squirrel's muscles despite prolonged sedentary activity. Overall, an increased understanding of protein abundance in hibernators may enable novel therapeutic strategies to treat muscle disuse atrophy and heart disease in humans.
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Affiliation(s)
- Md Shadman Ridwan Abid
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, United States
| | - Eric C. Bredahl
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE, 68178, United States
| | - Ashley D. Clifton
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, United States
| | - Haowen Qiu
- Center for Biotechnology, University of Nebraska-Lincoln, Lincoln, NE, 68588, United States
- The Nebraska Center for Integrated Biomolecular Communication (NCIBC), University of Nebraska-Lincoln, Lincoln, NE, 68588, United States
| | - Matthew T. Andrews
- School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE, 68583, United States
| | - James W. Checco
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, United States
- The Nebraska Center for Integrated Biomolecular Communication (NCIBC), University of Nebraska-Lincoln, Lincoln, NE, 68588, United States
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Mousavi S, Qiu H, Heinis FI, Bredahl EC, Ridwan Abid MS, Clifton AD, Andrews MT, Checco JW. Effects of Anesthetic Administration on Rat Hypothalamus and Cerebral Cortex Peptidome. ACS Chem Neurosci 2023; 14:3986-3992. [PMID: 37879091 PMCID: PMC10872895 DOI: 10.1021/acschemneuro.3c00499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023] Open
Abstract
Prohormone-derived neuropeptides act as cell-cell signaling molecules to mediate a wide variety of biological processes in the animal brain. Mass spectrometry-based peptidomic experiments are valuable approaches to gain insight into the dynamics of individual peptides under different physiological conditions or experimental treatments. However, the use of anesthetics during animal procedures may confound experimental peptide measurements, especially in the brain, where anesthetics act. Here, we investigated the effects of the commonly used anesthetics isoflurane and sodium pentobarbital on the peptide profile in the rodent hypothalamus and cerebral cortex, as assessed by label-free quantitative peptidomics. Our results showed that neither anesthetic dramatically alters peptide levels, although extended isoflurane exposure did cause changes in a small number of prohormone-derived peptides in the cerebral cortex. Overall, our results demonstrate that acute anesthetic administration can be utilized in peptidomic experiments of the hypothalamus and cerebral cortex without greatly affecting the measured peptide profiles.
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Affiliation(s)
- Somayeh Mousavi
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, United States
| | - Haowen Qiu
- Center for Biotechnology, University of Nebraska-Lincoln, Lincoln, NE 68588, United States
- The Nebraska Center for Integrated Biomolecular Communication (NCIBC), University of Nebraska-Lincoln, Lincoln, NE 68588, United States
| | - Frazer I. Heinis
- School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - Eric C. Bredahl
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE 68178, United States
| | - Md Shadman Ridwan Abid
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, United States
| | - Ashley D. Clifton
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, United States
| | - Matthew T. Andrews
- School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - James W. Checco
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, United States
- The Nebraska Center for Integrated Biomolecular Communication (NCIBC), University of Nebraska-Lincoln, Lincoln, NE 68588, United States
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Law D, Magrini MA, Siedlik JA, Eckerson J, Drescher KM, Bredahl EC. Creatine and Resistance Training: A Combined Approach to Attenuate Doxorubicin-Induced Cardiotoxicity. Nutrients 2023; 15:4048. [PMID: 37764831 PMCID: PMC10536171 DOI: 10.3390/nu15184048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/01/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Doxorubicin (DOX), a potent chemotherapy agent, useful in the treatment of solid tumors, lymphomas, and leukemias, is limited by its potentially lethal cardiotoxicity. However, exercise has been consistently shown to mitigate the side effects of DOX, including cardiotoxicity. To date, most studies examining the relationship between exercise and DOX-induced cardiotoxicity have focused on aerobic exercise, with very few examining the role of anerobic activity. Therefore, this investigation explored the potential of creatine (CR) and resistance training (RT) in preserving cardiac health during DOX therapy. Male Sprague-Dawley rats were grouped into RT, RT + CR, sedentary (SED), and SED + CR, with each division further branching into saline (SAL) or DOX-treated subsets post-10 weeks of RT or SED activity. RT comprised progressive training utilizing specialized cages for bipedal stance feeding. CR-treated groups ingested water mixed with 1% CR monohydrate and 5% dextrose, while control animals received 5% dextrose. At week 10, DOX was administered (2 mg/kg/week) over 4-weeks to an 8 mg/kg cumulative dose. Cardiac function post-DOX treatment was assessed via transthoracic echocardiography. Left ventricular diameter during diastole was lower in DOX + CR, RT + DOX, and RT + CR + DOX compared to SED + DOX (p < 0.05). Additionally, cardiac mass was significantly greater in RT + CR + DOX SED + DOX animals (p < 0.05). These results suggest RT and CR supplementation, separately and in combination, could attenuate some measures of DOX-induced cardiotoxicity and may offer a cost-effective way to complement cancer treatments and enhance patient outcomes. More investigations are essential to better understand CR's prolonged effects during DOX therapy and its clinical implications.
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Affiliation(s)
- David Law
- Department of Exercise Science and Pre-Health Professions, Creighton University, 2500 California Plaza, Omaha, NE 68178, USA
| | - Mitchel A Magrini
- Department of Exercise Science and Pre-Health Professions, Creighton University, 2500 California Plaza, Omaha, NE 68178, USA
| | - Jacob A Siedlik
- Department of Exercise Science and Pre-Health Professions, Creighton University, 2500 California Plaza, Omaha, NE 68178, USA
- Department of Medical Microbiology and Immunology, Creighton University, Omaha NE 68178, USA
| | - Joan Eckerson
- Department of Exercise Science and Pre-Health Professions, Creighton University, 2500 California Plaza, Omaha, NE 68178, USA
| | - Kristen M Drescher
- Department of Medical Microbiology and Immunology, Creighton University, Omaha NE 68178, USA
| | - Eric C Bredahl
- Department of Exercise Science and Pre-Health Professions, Creighton University, 2500 California Plaza, Omaha, NE 68178, USA
- Department of Medical Microbiology and Immunology, Creighton University, Omaha NE 68178, USA
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Bredahl EC, Johnson N, Kettler E, Law D, Dalicandro M, Siedlik J, Magrini M, Eckerson J, Drescher K. Controlled Metabolic Depression With Adenosine Receptor Agonists. Med Sci Sports Exerc 2022. [DOI: 10.1249/01.mss.0000883436.72696.79] [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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Hulen J, Kenny D, Black R, Hallgren J, Hammond KG, Bredahl EC, Wickramasekara RN, Abel PW, Stessman HAF. KMT5B is required for early motor development. Front Genet 2022; 13:901228. [PMID: 36035149 PMCID: PMC9411648 DOI: 10.3389/fgene.2022.901228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Disruptive variants in lysine methyl transferase 5B (KMT5B/SUV4-20H1) have been identified as likely-pathogenic among humans with neurodevelopmental phenotypes including motor deficits (i.e., hypotonia and motor delay). However, the role that this enzyme plays in early motor development is largely unknown. Using a Kmt5b gene trap mouse model, we assessed neuromuscular strength, skeletal muscle weight (i.e., muscle mass), neuromuscular junction (NMJ) structure, and myofiber type, size, and distribution. Tests were performed over developmental time (postnatal days 17 and 44) to represent postnatal versus adult structures in slow- and fast-twitch muscle types. Prior to the onset of puberty, slow-twitch muscle weight was significantly reduced in heterozygous compared to wild-type males but not females. At the young adult stage, we identified decreased neuromuscular strength, decreased skeletal muscle weights (both slow- and fast-twitch), increased NMJ fragmentation (in slow-twitch muscle), and smaller myofibers in both sexes. We conclude that Kmt5b haploinsufficiency results in a skeletal muscle developmental deficit causing reduced muscle mass and body weight.
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Affiliation(s)
- Jason Hulen
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
| | - Dorothy Kenny
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
| | - Rebecca Black
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
| | - Jodi Hallgren
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
| | - Kelley G. Hammond
- Department of Exercise Science, College of Arts and Sciences, Creighton University, Omaha, NE, United States
| | - Eric C. Bredahl
- Department of Exercise Science, College of Arts and Sciences, Creighton University, Omaha, NE, United States
| | - Rochelle N. Wickramasekara
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
- Molecular Diagnostic Laboratory, Boys Town National Research Hospital, Omaha, NE, United States
| | - Peter W. Abel
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
| | - Holly A. F. Stessman
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
- *Correspondence: Holly A. F. Stessman,
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Bredahl EC, Sharif S, Siedlik JA, Wagner MK, Twaddell MD, Tigner AT, Dovgan MD, Najdawi WO, Hydock DS, Eckerson JM, Drescher KM. Resistance Training during Chemotherapy with Doxorubicin. Med Sci Sports Exerc 2021; 52:2529-2537. [PMID: 32520871 DOI: 10.1249/mss.0000000000002409] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Previous research has shown that resistance training (RT) before doxorubicin (DOX) treatment attenuates the decline in muscle dysfunction; however, the effect of RT during DOX treatment is less known. PURPOSE Investigate the effects of RT before and during a 4-wk course of incremental DOX treatment on skeletal muscle function. METHODS Male, Sprague-Dawley rats (N = 36) were randomly assigned to the following groups: sedentary+saline (SED + SAL), sedentary+DOX (SED + DOX), RT + SAL, or RT + DOX. The RT protocol utilized a raised cage model, which provided progressive hindlimb loading throughout the 14-wk study, whereas SED animals were kept in normal housing. Starting at week 10, DOX-treated animals received 3 mg·kg DOX weekly for 4 wk (12 mg·kg cumulative); whereas SAL-treated groups received 0.9% NaCl as a placebo. Grip strength was recorded at 0, 10, 12, and 14 wk. Ex vivo muscle function was performed on excised soleus (SOL) and extensor digitorum longus (EDL) from the right hind limb 5 d after the last injection and were analyzed for expression of creatine kinase (CK) and creatine transporters. RESULTS SED + DOX-treated animals had significantly lower EDL mass compared with SED + SAL- and RT + DOX-treated animals. Grip strength, EDL maximal force, and EDL force development were significantly lower in SED + DOX-treated animals compared with RT + SAL and SED + SAL. No significant differences in EDL function were found between RT + DOX and RT + SAL animals. DOX treatment reduced expression of CK in the SOL, which abated with RT. CONCLUSIONS Low-intensity RT may attenuate the decline in skeletal muscle function during incremental DOX treatment.
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Affiliation(s)
- Eric C Bredahl
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE
| | - Salaheddin Sharif
- School of Sport and Exercise Science University of Northern Colorado, Greeley, CO
| | - Jacob A Siedlik
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE
| | - Meghan K Wagner
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE
| | - Mackenzie D Twaddell
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE
| | - Allison T Tigner
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE
| | - Matthew D Dovgan
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE
| | - Wisam O Najdawi
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE
| | | | - Joan M Eckerson
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE
| | - Kristen M Drescher
- Department of Medical Microbiology and Immunology, Creighton University Medical School, Omaha, NE
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Abstract
Background: Doxorubicin (DOX) is associated with profound skeletal muscle dysfunction. Resistance training (RT) and creatine (Cr) monohydrate have been independently shown to protect against DOX-induced muscle dysfunction. However, no investigation has examined their combined effects on DOX-induced muscle dysfunction. Methods: Male Sprague-Dawley rats were randomly assigned to a RT or sedentary group. After 6 wk of training, the soleus (SOL) and extensor digitorum longus (EDL) were excised and placed in a tissue bath containing Krebs buffer (K) or a K containing Cr (25 mM) for 30 min. The buffers were refreshed with new K or K containing DOX (24 μM) and incubated for 30 min. Muscles were then subjected to maximal twitch and fatigue testing.Results: DOX-induced fatigue occurred at 40 s in the SOL and EDL. RT delayed DOX-induced fatigue by 20 s in the SOL and 10 s in the EDL. Cr treatment delayed the onset of DOX-induced fatigue by 10 s in the EDL. The combination of RT and Cr delayed DOX-induced fatigue by 50 s in the SOL and 20 s in the EDL.Conclusion: This study showed that a combined treatment with RT and Cr minimized DOX-induced fatigue in the SOL and EDL.
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Affiliation(s)
- Eric C Bredahl
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, Nebraska, USA
| | - Raquel B Busekrus
- School of Sport and Exercise Science, University of Northern Colorado, Greeley, Colorfado, USA.,Rocky Mountain Cancer Rehabilitation Institute, University of Northern Colorado, Greeley, Colorado, USA
| | - David S Hydock
- School of Sport and Exercise Science, University of Northern Colorado, Greeley, Colorfado, USA.,Rocky Mountain Cancer Rehabilitation Institute, University of Northern Colorado, Greeley, Colorado, USA
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Holbrook AK, Peterson HD, Bianchi SA, Macdonald BW, Bredahl EC, Belshan M, Siedlik JA. CD4 + T cell activation and associated susceptibility to HIV-1 infection in vitro increased following acute resistance exercise in human subjects. Physiol Rep 2019; 7:e14234. [PMID: 31552706 PMCID: PMC6759488 DOI: 10.14814/phy2.14234] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 08/22/2019] [Accepted: 08/27/2019] [Indexed: 12/13/2022] Open
Abstract
Early studies in exercise immunology suggested acute bouts of exercise had an immunosuppressive effect in human subjects. However, recent data, show acute bouts of combined aerobic and resistance training increase both lymphocyte activation and proliferation. We quantified resistance exercise-induced changes in the activation state of CD4+ T lymphocytes via surface protein expression and using a medically relevant model of infection (HIV-1). Using a randomized cross-over design, 10 untrained subjects completed a control and exercise session. The control session consisted of 30-min seated rest while the exercise session entailed 3 sets × 10 repetitions of back squat, leg press, and leg extensions at 70% 1-RM with 2-min rest between each set. Venous blood samples were obtained pre/post each session. CD4+ T lymphocytes were isolated from whole blood by negative selection. Expression of activation markers (CD69 & CD25) in both nonstimulated and stimulated (costimulation through CD3+ CD28) cells were assessed by flow cytometry. Resistance exercised-induced effects on intracellular activation was further evaluated via in vitro infection with HIV-1. Nonstimulated CD4+ T lymphocytes obtained postexercise exhibited elevated CD25 expression following 24 h in culture. Enhanced HIV-1 replication was observed in cells obtained postexercise. Our results demonstrate that an acute bout of resistance exercise increases the activation state of CD4+ T lymphocytes and results in a greater susceptibility to HIV-1 infection in vitro. These findings offer further evidence that exercise induces activation of T lymphocytes and provides a foundation for the use of medically relevant pathogens as indirect measures of intracellular activation.
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Affiliation(s)
| | - Hunter D. Peterson
- Department of Exercise Science and Pre‐Health ProfessionsCreighton UniversityOmahaNebraska
| | - Samantha A. Bianchi
- Department of Exercise Science and Pre‐Health ProfessionsCreighton UniversityOmahaNebraska
| | - Brad W. Macdonald
- Department of Exercise Science and Pre‐Health ProfessionsCreighton UniversityOmahaNebraska
| | - Eric C. Bredahl
- Department of Exercise Science and Pre‐Health ProfessionsCreighton UniversityOmahaNebraska
| | - Michael Belshan
- Department of Medical Microbiology and ImmunologyCreighton UniversityOmahaNebraska
| | - Jacob A. Siedlik
- Department of Exercise Science and Pre‐Health ProfessionsCreighton UniversityOmahaNebraska
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Najdawi WO, Bredahl EC, Eckerson J, Siedlik J, Drescher K. The Effect Of Doxorubicin On Myocardial Extracellular Matrix Degradation. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000561241.28667.8c] [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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Sharif S, Hydock DS, Daehlin KA, Twaddle MD, Tigner AT, Wagner MK, Bredahl EC. Resistance Exercise And Doxorubicin Treatment: Effects On Antioxidant Enzyme Expression In Type Ii Muscle. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000562003.14759.c3] [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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Glick MM, Sacco MP, Bredahl EC, Lane MT, Siedlik JA. Dual Stress Warm-Up Protocol Does Not Significantly Alter Blood Glucose Concentration. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000561488.27761.2d] [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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Lee CL, Bredahl EC, Lane MT, Siedlik JA. Comparison of Two Training Programs for Improvement of Muscular Strength Quantified via Pull-Ups. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000563398.20846.55] [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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Sacco MP, Glick MM, Bredahl EC, Lane MT, Siedlik JA. Dual Stress Warm-Up Protocol Does Not Significantly Improve Anaerobic Performance. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000563327.34719.32] [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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Peterson HD, Holbrook AK, Ihlenfeldt A, Macdonald BW, Bianchi SA, Bredahl EC, Belshan MA, Siedlik JA. Changes In Functional Activation Of Memory T Cells Following Exercise. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000535095.73024.1f] [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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Holbrook AK, Belshan MA, Bredahl EC, Siedlik JA. The Effect Of Exercise On CD4+ T-cell Activation And Their Susceptibility To HIV-1. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000535825.01047.15] [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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Macdonald BW, Holbrook AK, Ihlenfeldt A, Peterson HD, Bianchi SA, Bredahl EC, Belshan MA, Siedlik JA. CD4+ T Cell Activation Markers Altered Following Resistance Training In Untrained Subjects. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000535098.18766.b2] [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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Sharif S, Hydock DS, Twaddell M, Tigner A, Wagner M, Bredahl EC. Effects of Resistance Training and Doxorubicin on Creatine Transporter and Creatine Kinase Expression in Fast Muscle. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000538778.01001.6c] [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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Bianchi SA, Holbrook AK, Ihlenfeldt A, Macdonald BW, Peterson HD, Bredahl EC, Belshan MA, Siedlik JA. Cd28 Expression On Cd4+ T Cells Is Not Affected By Strenuous Exercise In Untrained Individuals. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000536637.65810.97] [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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Abstract
INTRODUCTION Chemotherapy treatment with doxorubicin (DOX) can have a negative effect on normal skeletal muscle function. Recent research demonstrates the potential value of exercise in alleviating DOX-induced cardiotoxicity. Yet up to now, little research has been done to examine whether exercise might also be effective in addressing DOX's skeletal muscle adverse effects, especially because posttreatment skeletal muscle dysfunction may cause patient difficulties with completing activities of daily living. The main aim of this study was to examine how resistance training (RT) and treadmill (TM) training play a role in preventing DOX-induced skeletal muscle dysfunction. METHODS Male Sprague-Dawley rats were randomly placed into an RT, TM, or sedentary (SED) group for 10 wk and then received either a bolus injection of DOX (15 mg·kg) or saline as a control. Skeletal muscle function was then assessed ex vivo 5 d after injection. RESULTS SED animals treated with DOX showed significantly lower maximal twitch force, maximal rate of force production, and maximal rate of force decline versus SED + saline in the soleus (SOL) (Type I muscle). In the extensor digitorum longus (Type II muscle), treatment with DOX resulted in a significantly lower maximal rate of force production and maximal rate of force decline. RT preserved maximal twitch force and maximal rate of force decline in the SOL. TM attenuated DOX-induced fatigue in the SOL but not in the extensor digitorum longus. CONCLUSION These findings suggest that RT and TM before DOX could be useful in preserving skeletal muscle function and minimizing fatigue after chemotherapy, but this protection may be dependent on the skeletal muscle type.
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Affiliation(s)
- Eric C Bredahl
- 1School of Sport and Exercise Science, University of Northern Colorado, Greeley, CO; and 2The University of Northern Colorado Cancer Rehabilitation Institute, University of Northern Colorado, Greeley, CO
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Bredahl EC, Kottensette SA, Marshall NR, Wagner MK, Drescher K, Eckerson JM. The Effects Of Creatine And Creatinine On Rates Of Apoptosis In Doxorubicin-treated Myoblasts. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000516825.98126.6a] [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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Abstract
Supplementing the diet with creatine (Cr) to manage chemotherapy-induced skeletal muscle weakness and fatigue has potential, but little has been done exploring it as an intervention. This study examined the effects of Cr on skeletal muscle dysfunction induced by the chemotherapy drug doxorubicin (Dox). Soleus and extensor digitorum longus (EDL) from male Sprague-Dawley rats maintained in an organ bath were incubated in Krebs-Henseleit (KH) buffer with or without creatine monohydrate (25 mM) for 30 min. Skeletal muscle was then incubated in KH buffer with or without Dox (24 μM) for an additional 30 min. Baths were then refreshed with KH buffer, and a 100-s fatigue protocol was administered. At baseline (0 s time point), no significant differences in force production were observed in the slow, type I soleus, but the Dox-treated soleus fatigued quicker than the non-Dox-treated soleus; however, pretreatment with Cr extended the time to fatigue in the Dox-treated soleus. In the fast, type II EDL, Dox treatment decreased force production at baseline and increased fatigue, and Cr treatment prior to Dox attenuated this dysfunction. Creatine pretreatment mitigated Dox-induced skeletal muscle dysfunction ex vivo suggesting that Cr may play a role in managing Dox-induced skeletal muscle side effects.
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Affiliation(s)
- Eric C Bredahl
- a Department of Exercise Science and Pre-Health Professions , Creighton University , Omaha , Nebraska , USA
| | - David S Hydock
- b School of Sport and Exercise Science, University of Northern Colorado , Greeley , Colorado , USA.,c The University of Northern Colorado Cancer Rehabilitation Institute, University of Northern Colorado , Greeley , Colorado , USA
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Bredahl EC, Hydock D. Effects of Resistance Training and Creatine Monohydrate on Doxorubicin-Induced Muscle Fatigue. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000486090.53170.6f] [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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Borges RL, Hochberg LM, Bredahl EC, Hydock DS. Pilot Study Examining the Effects of Doxorubicin Treatment and Voluntary Wheel Running on Kidney Antioxidants. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000485564.98563.9f] [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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Hydock DS, Bredahl EC, Gibson NM, Quinn CJ, Hayward R. Correlations Between Skeletal Muscle and Cardiac Function in Exercised and Sedentary Rats Receiving Doxorubicin. Med Sci Sports Exerc 2014. [DOI: 10.1249/01.mss.0000493766.25756.a3] [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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Gibson NM, Bredahl EC, Quinn CJ, Hayward R, Hydock DS. Treadmill Training But Not Resistance Training Protects Against Doxorubicin-induced Skeletal Muscle Lipid Peroxidation. Med Sci Sports Exerc 2014. [DOI: 10.1249/01.mss.0000493768.71497.38] [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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Quinn CJ, Elzaidi NM, Gibson NM, Bredahl EC, Hayward R, Hydock DS. Skeletal Muscle SERCA Expression Following Doxorubicin Treatment. Med Sci Sports Exerc 2014. [DOI: 10.1249/01.mss.0000494242.94579.8c] [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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Bredahl EC, Hydock DS. The Effects of Creatine Incubation on Doxorubicin-Induced Muscle Dysfunction. Med Sci Sports Exerc 2014. [DOI: 10.1249/01.mss.0000494905.81585.86] [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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