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Peczkowski KK, Rastogi N, Lowe J, Floyd KT, Schultz EJ, Karaze T, Davis JP, Rafael-Fortney JA, Janssen PML. Corrigendum: Muscle Twitch Kinetics Are Dependent on Muscle Group, Disease State, and Age in Duchenne Muscular Dystrophy Mouse Models. Front Physiol 2022; 12:820245. [PMID: 35069268 PMCID: PMC8767497 DOI: 10.3389/fphys.2021.820245] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 12/10/2021] [Indexed: 11/13/2022] Open
Abstract
[This corrects the article DOI: 10.3389/fphys.2020.568909.].
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Affiliation(s)
- Kyra K Peczkowski
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Neha Rastogi
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Jeovanna Lowe
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Kyle T Floyd
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Eric J Schultz
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Tallib Karaze
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Jonathan P Davis
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Jill A Rafael-Fortney
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Paul M L Janssen
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
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Peczkowski KK, Rastogi N, Lowe J, Floyd KT, Schultz EJ, Karaze T, Davis JP, Rafael-Fortney JA, Janssen PML. Muscle Twitch Kinetics Are Dependent on Muscle Group, Disease State, and Age in Duchenne Muscular Dystrophy Mouse Models. Front Physiol 2020; 11:568909. [PMID: 33101056 PMCID: PMC7545010 DOI: 10.3389/fphys.2020.568909] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 06/02/2020] [Accepted: 08/28/2020] [Indexed: 11/13/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is an X-linked disorder caused by the lack of functional dystrophin protein. In muscular dystrophy preclinical research, it is pertinent to analyze the force of the muscles affected by the disease to assess pathology and potential effectiveness of therapeutic interventions. Although muscles function at sub-maximal levels in vivo, maximal tetanic contractions are most commonly used to assess and report muscle function in muscular dystrophy studies. At submaximal activation, the kinetics of contraction and relaxation are heavily impacted by the kinetics of the single twitch. However, maximal tetanic force is often the main, if not sole, outcome measured in most studies, while contractile kinetics are rarely reported. To investigate the effect of muscle disease on twitch contraction kinetics, isolated diaphragm and extensor digitorum longus (EDL) muscles of 10-, 20-week, “het” (dystrophin deficient and utrophin haplo-insufficient), and 52-week mdx (dystrophin deficient) mice were analyzed and compared to wild-type controls. We observed that twitch contractile kinetics are dependent on muscle type, age, and disease state. Specific findings include that diaphragm from wildtype mice has a greater time to 50% relaxation (RT50) than time to peak tension (TTP) compared to the het and mdx dystrophic models, where there is a similar TTP compared to RT50. Diaphragm twitch kinetics remain virtually unchanged with age, while the EDL from het and mdx mice initially has a greater RT50 than TTP, but the TTP increases with age. The difference between EDL contractile kinetics of dystrophic and wildtype mice is more prominent at young age. Differences in kinetics yielded greater statistical significance compared to previously published force measurements, thus, using kinetics as an outcome parameter could potentially allow for use of smaller experimental groups in future study designs. Although this study focused on DMD models, our findings may be applicable to other skeletal muscle conditions and diseases.
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Affiliation(s)
- Kyra K Peczkowski
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Neha Rastogi
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Jeovanna Lowe
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Kyle T Floyd
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Eric J Schultz
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Tallib Karaze
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Jonathan P Davis
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Jill A Rafael-Fortney
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Paul M L Janssen
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, United States
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Lowe J, Kadakia FK, Zins JG, Haupt M, Peczkowski KK, Rastogi N, Floyd KT, Gomez-Sanchez EP, Gomez-Sanchez CE, Elnakish MT, Rafael-Fortney JA, Janssen PML. Mineralocorticoid Receptor Antagonists in Muscular Dystrophy Mice During Aging and Exercise. J Neuromuscul Dis 2018; 5:295-306. [PMID: 30010143 DOI: 10.3233/jnd-180323] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Mineralocorticoid receptor antagonists added to angiotensin converting enzyme inhibitors have shown preclinical efficacy for both skeletal and cardiac muscle outcomes in young sedentary dystrophin-deficient mdx mice also haploinsufficient for utrophin, a Duchenne muscular dystrophy (DMD) model. The mdx genotypic DMD model has mild pathology, making non-curative therapeutic effects difficult to distinguish at baseline. Since the cardiac benefit of mineralocorticoid receptor antagonists has been translated to DMD patients, it is important to optimize potential advantages for skeletal muscle by further defining efficacy parameters. OBJECTIVE We aimed to test whether therapeutic effects of mineralocorticoid receptor antagonists added to angiotensin converting enzyme inhibitors are detectable using three different reported methods of exacerbating the mdx phenotype. METHODS We tested treatment with lisinopril and the mineralocorticoid receptor antagonist spironolactone in: 10 week-old exercised, 1 year-old sedentary, and 5 month-old isoproterenol treated mdx mice and performed comprehensive functional and histological measurements. RESULTS None of the protocols to exacerbate mdx phenotypes resulted in dramatically enhanced pathology and no significant benefit was observed with treatment. CONCLUSIONS Since endogenous mineralocorticoid aldosterone production from immune cells in dystrophic muscle may explain antagonist efficacy, it is likely that these drugs work optimally during the narrow window of peak inflammation in mdx mice. Exercised and aged mdx mice do not display prolific damage and inflammation, likely explaining the absence of continued efficacy of these drugs. Since inflammation is more prevalent in DMD patients, the therapeutic window for mineralocorticoid receptor antagonists in patients may be longer.
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Affiliation(s)
- Jeovanna Lowe
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Feni K Kadakia
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Jonathan G Zins
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Michael Haupt
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Kyra K Peczkowski
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Neha Rastogi
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Kyle T Floyd
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Elise P Gomez-Sanchez
- Department of Pharmacology & Toxicology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Celso E Gomez-Sanchez
- Department of Internal Medicine, University of Mississippi Medical Center, Jackson, MS, USA
| | - Mohammad T Elnakish
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA.,Department of Pharmacology & Toxicology, Faculty of Pharmacy, Helwan University, Cairo, Egypt
| | - Jill A Rafael-Fortney
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Paul M L Janssen
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
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Lowe J, Floyd KT, Rastogi N, Schultz EJ, Chadwick JA, Swager SA, Zins JG, Kadakia FK, Smart S, Gomez-Sanchez EP, Gomez-Sanchez CE, Raman SV, Janssen PML, Rafael-Fortney JA. Similar efficacy from specific and non-specific mineralocorticoid receptor antagonist treatment of muscular dystrophy mice. J Neuromuscul Dis 2018; 3:395-404. [PMID: 27822449 DOI: 10.3233/jnd-160173] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
BACKGROUND Combined treatment with an angiotensin-converting enzyme inhibitor and a mineralocorticoid receptor (MR) antagonist improved cardiac and skeletal muscle function and pathology in a mouse model of Duchenne muscular dystrophy. MR is present in limb and respiratory skeletal muscles and functions as a steroid hormone receptor. OBJECTIVE The goals of the current study were to compare the efficacy of the specific MR antagonist eplerenone with the non-specific MR antagonist spironolactone, both in combination with the angiotensin-converting enzyme inhibitor lisinopril. METHODS Three groups of n=18 dystrophin-deficient, utrophin-haploinsufficient male mice were given chow containing: lisinopril plus spironolactone, lisinopril plus eplerenone, or no drug, from four to 20 weeks-of-age. Eighteen C57BL/10 male mice were used as wild-type controls. In vivo measurements included cardiac magnetic resonance imaging, conscious electrocardiography, and grip strength. From each mouse in the study, diaphragm, extensor digitorum longus, and cardiac papillary muscle force was measured ex vivo, followed by histological quantification of muscle damage in heart, diaphragm, quadriceps, and abdominal muscles. MR protein levels were also verified in treated muscles. RESULTS Treatment with specific and non-specific MR antagonists did not result in any adverse effects to dystrophic skeletal muscles or heart. Both treatments resulted in similar functional and pathological improvements across a wide array of parameters. MR protein levels were not reduced by treatment. CONCLUSIONS These data suggest that spironolactone and eplerenone show similar effects in dystrophic mice and support the clinical development of MR antagonists for treating skeletal muscles in Duchenne muscular dystrophy.
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Affiliation(s)
- Jeovanna Lowe
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Kyle T Floyd
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Neha Rastogi
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Eric J Schultz
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Jessica A Chadwick
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Sarah A Swager
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Jonathan G Zins
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Feni K Kadakia
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Suzanne Smart
- Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Elise P Gomez-Sanchez
- Dept. of Pharmacology & Toxicology, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Celso E Gomez-Sanchez
- Dept. of Internal Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Subha V Raman
- Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Paul M L Janssen
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Jill A Rafael-Fortney
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
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Lowe J, Wodarcyk AJ, Floyd KT, Rastogi N, Schultz EJ, Swager SA, Chadwick JA, Tran T, Raman SV, Janssen PML, Rafael-Fortney JA. The Angiotensin Converting Enzyme Inhibitor Lisinopril Improves Muscle Histopathology but not Contractile Function in a Mouse Model of Duchenne Muscular Dystrophy. J Neuromuscul Dis 2015; 2:257-268. [PMID: 27110493 PMCID: PMC4838202 DOI: 10.3233/jnd-150099] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [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] [Indexed: 01/16/2023]
Abstract
Background: Angiotensin converting enzyme inhibitors (ACEi) are the current standard of care treatment for cardiac dysfunction in Duchenne muscular dystrophy patients. We previously showed treatment with an ACEi plus mineralocorticoid receptor (MR) antagonist improves limb and respiratory skeletal muscles, in addition to cardiac muscles, in a dystrophic mouse model at 20 weeks-of-age. Objective: To determine whether previously observed preclinical benefits of an ACEi plus MR antagonist on dystrophic skeletal muscles can be reproduced by increasing ACEi dosage alone. We also compared functional and histological outcome measures at 10 and 20 weeks-of-age. Methods: Dystrophin deficient utrophin haplo-insufficient (utrn +/- ; mdx) “het” mice were treated with 10, 20, or 50 mg/kg × day of the ACEi lisinopril from 4 to 10 weeks-of-age via water bottles and compared with C57BL/10 wild-type control mice and untreated hets. Data from 10 week-old het mice were also compared to data collected from an untreated het group at 20 weeks-old. In vivo cardiac and grip strength measurements, in vitro diaphragm and extensor digitorum longus muscle force measurements, and histopathological analyses were performed. One-way ANOVA followed by Dunnett post hoc comparison was used to determine significance. Results: ACEi treatment reduced skeletal muscle damage but had no significant effect on muscle force. Body weight, heart rate, grip strength and blood pressure were unaffected by treatment. Limb muscle histopathology was more informative at 10 than 20 weeks-of-age. Conclusions: These results suggest increased ACEi dosage alone cannot improve all dystrophic parameters. Further optimization of MR antagonists in 20 week-old mice is warranted.
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Affiliation(s)
- Jeovanna Lowe
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA ; Department of Molecular & Cellular Biochemistry, The Ohio State University, Columbus, OH, USA
| | - Andrew J Wodarcyk
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA ; Department of Molecular & Cellular Biochemistry, The Ohio State University, Columbus, OH, USA
| | - Kyle T Floyd
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Neha Rastogi
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Eric J Schultz
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Sarah A Swager
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA ; Department of Molecular & Cellular Biochemistry, The Ohio State University, Columbus, OH, USA
| | - Jessica A Chadwick
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA ; Department of Molecular & Cellular Biochemistry, The Ohio State University, Columbus, OH, USA
| | - Tam Tran
- Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Subha V Raman
- Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Paul M L Janssen
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Jill A Rafael-Fortney
- Department of Physiology & Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA ; Department of Molecular & Cellular Biochemistry, The Ohio State University, Columbus, OH, USA
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