Histological Study to Compare the Effect of Atomoxetine Versus Formetrol on Dexamethasone-Induced Skeletal Muscle Atrophy in Male Mice | ||||
| Egyptian Journal of Histology | ||||
| Article 21, Volume 47, Issue 4, December 2024, Page 1510-1521 PDF (1.47 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejh.2023.240872.1958 | ||||
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| Authors | ||||
Sarwat Lotfi Ahmed; Heba Essam Rashad; Noha Abd ellatif Ibrahim; Marwa Omar Abd el all; Nehad Ahmed Sadek 
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| Histology and cell biology department, Faculty of medicine, Fayoum university | ||||
| Abstract | ||||
| Introduction: Atrophy of skeletal muscles is still a serious clinical problem. Formoterol, an agonist of the B2- adrenergic receptor, may prevent this atrophy. An FDA-approved inhibitor of reuptake of norepinephrine called atomoxetine was effective in the prevention of skeletal muscle atrophy. Aim of Work: Compare the effect of atomoxetine versus formetrol on dexamethasone-induced skeletal muscle atrophy in male mice. Material and Methods: Forty-eight adult male albino mice were divided into six groups (8 mice each): Group 1 (control group) animals were injected intraperitoneally with 0.5ml sterile saline daily for seven days. Group 2 (dexamethasone treated group) animals were injected intraperitoneally with 10mg/kg/day dexamethasone for seven days to induce muscle atrophy. Group 3 (atomoxetine only treated group): animals received atomoxetine at a dose of 6mg/kg/day orally using insulin syringe without needle for seven days. Group 4 (atomoxetine + dexamethasone treated group): animals received both dexamethasone and atomoxetine at same doses and routes of administrationin as groups 2 and 3 respectively. Group 5 (formertrol only treated group): animals were injected intraperitoneally with 0.6 mg/kg/day formetrol for seven days. Group 6 (formertrol + dexamethasone treated group): animals received both dexamethasone and formetrol at same doses and routes of administration as groups 2 and 5 respectively. Sections were stained with hematoxylin and eosin stain & Picro Sirius red (PSR) histochemical reaction. Immunohistochemical staining was done using nuclear factor kappa-B (NF-κB) and heat shock protein (Hsp70). Area percent of collagen fibers deposition, area percent of nuclear factor kappa-B immunoexpression, area percent of heat shock protein 70 immunoexpression and diameter of muscle fiber were measured. Results: Group 4 (atomoxetine and dexamethasone treated group) and Group 6 (formertrol and dexamethasone treated group) showed increase in diameter of muscle fibers as compared to dexamethasone group. Conclusion: Formetrol has a potential role in preventing skeletal muscle atrophy. | ||||
| Keywords | ||||
| Atomoxetine; dexamethasone; formetrol; skeletal muscle atroph | ||||
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