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Doostkam A, Mirkhani H, Iravani K, Karbalay-Doust S, Doosti A, Nadimi E, Pirsalami F. Controversial Role of Folic Acid on Diabetic Auditory Neuropathy. ACS Pharmacol Transl Sci 2022; 5:985-992. [PMID: 36268113 PMCID: PMC9578138 DOI: 10.1021/acsptsci.2c00140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Diabetic auditory neuropathy (DAN) is a common complication of diabetes that seriously affects the quality of life in patients. In this study, we investigate the role of folic acid in the treatment of DAN in an experimental rat model. METHODS Thirty-two Sprague-Dawley rats were equally divided into four groups: group 1, normal; group 2, diabetic rats; and groups 3 and 4, diabetic rats treated with folic acid (40 and 80 mg/kg, respectively). We used some tools to investigate the therapeutic effect of folic acid on DAN. We evaluated auditory brain stem response (ABR), estimated the volume and number of spiral ganglion and the volume of stria vascularis and spiral ligament by the stereological method, and measured the blood levels of homocysteine (HCY), malondialdehyde (MDA), and superoxide dismutase (SOD). RESULTS Our study showed that folic acid treatment was not significantly effective in improving structural and functional disorders in DAN, even though its effectiveness in reducing HCY (P < 0.001) and MDA (P < 0.05) as oxidative biomarkers was significant. CONCLUSION Folic acid is not effective in relieving morphological and functional disorders in DAN.
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Affiliation(s)
- Aida Doostkam
- Shiraz
Nephro-Urology Research Center, Shiraz University
of Medical Sciences, Shiraz 7193635899, Iran
| | - Hossein Mirkhani
- Department
of Pharmacology, School of Medicine, Medicinal and Natural Products
Chemistry Research Center, Shiraz University
of Medical Sciences, Shiraz 7134853185, Iran
| | - Kamyar Iravani
- Department
of Otolaryngology, Otolaryngology Research Center, Shiraz University of Medical Sciences, Shiraz 71936-16641, Iran
| | - Saied Karbalay-Doust
- Department
of Anatomy, School of Medicine, Histomorphometry and Stereology Research
Center, Shiraz University of Medical Sciences, Shiraz 7134853185, Iran
| | - Afsaneh Doosti
- Department
of Audiology, School of Rehabilitation Sciences, Rehabilitation Sciences
Research Center, Shiraz University of Medical
Sciences, Shiraz 7194733669, Iran
| | - Elham Nadimi
- Histomorphometry
and Stereology Research Center, Shiraz University
of Medical Sciences, Shiraz 7134853185, Iran
| | - Fatema Pirsalami
- Department
of Pharmacology, School of Medicine, Shiraz
University of Medical Sciences, Shiraz 7134853185, Iran
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Doostkam A, Mirkhani H, Iravani K, Karbalay-Doust S, Zarei K. Effect of Rutin on Diabetic Auditory Neuropathy in an Experimental Rat Model. Clin Exp Otorhinolaryngol 2020; 14:259-267. [PMID: 32764214 PMCID: PMC8373845 DOI: 10.21053/ceo.2019.02068] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 05/05/2020] [Indexed: 01/03/2023] Open
Abstract
Objectives Diabetic auditory neuropathy is a common complication of diabetes mellitus that has a major impact on patients’ quality of life. In this study, we assessed the efficacy of rutin in treating diabetic auditory neuropathy in an experimental rat model. Methods Forty Sprague-Dawley rats were randomly assigned to the following groups: group 1, control; group 2, diabetic rats; and groups 3–5, rats treated with rutin (at doses of 50, 100, and 150 mg/kg, respectively). We used auditory brain stem response, stereology of the spiral ganglion, and measurements of superoxide dismutase (SOD) and malondialdehyde (MDA) to evaluate the effects of treatment. Results Significant improvements in auditory neuropathy were observed in the rutin-treated groups in comparison with the diabetic group (P<0.05). Auditory threshold, wave latency, wave morphology, the volume and number of neurons in the spiral ganglion, and SOD and MDA activity showed improvements following treatment. Conclusion Rutin shows promise as a treatment modality for diabetic auditory neuropathy, but more trials are warranted for its clinical application.
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Affiliation(s)
- Aida Doostkam
- Department of Pharmacology, School of Medicine, Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hossein Mirkhani
- Department of Pharmacology, Medicinal and Natural Products Chemistry Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Kamyar Iravani
- Department of Otolaryngology, Otolaryngology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saied Karbalay-Doust
- Department of Anatomy, Histomorphometry and Stereology Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Kazem Zarei
- Department of Otolaryngology, Otolaryngology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Cai J, Shao X, Yang Q, Yang Y, Yan Z, Luo E, Feng X, Jing D. Pulsed electromagnetic fields modify the adverse effects of glucocorticoids on bone architecture, bone strength and porous implant osseointegration by rescuing bone-anabolic actions. Bone 2020; 133:115266. [PMID: 32044333 DOI: 10.1016/j.bone.2020.115266] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/05/2020] [Accepted: 02/06/2020] [Indexed: 01/08/2023]
Abstract
Long-term glucocorticoid therapy is known to induce increased bone fragility and impaired skeletal regeneration potential. Growing evidence suggests that pulsed electromagnetic fields (PEMF) can accelerate fracture healing and increase bone mass both experimentally and clinically. However, how glucocorticoid-treated bone and bone cells respond to PEMF stimulation remains poorly understood. Here we tested the effects of PEMF on bone quantity/quality, bone metabolism, and porous implant osseointegration in rabbits treated with dexamethasone (0.5 mg/kg/day, 6 weeks). The micro-CT, histologic and nanoindentation results showed that PEMF ameliorated the glucocorticoid-mediated deterioration of cancellous and cortical bone architecture and intrinsic material properties. Utilizing the new porous titanium implant (Ti2448) with low toxicity and low elastic modulus, we found that PEMF stimulated bone ingrowth into the pores of implants and enhanced peri-implant bone material quality during osseous defect repair in glucocorticoid-treated rabbits. Dynamic histomorphometric results revealed that PEMF reversed the adverse effects of glucocorticoids on bone formation, which was confirmed by increased circulating osteocalcin and P1NP. PEMF also significantly attenuated osteocyte apoptosis, promoted osteoblast-related osteocalcin, Runx2 and Osx expression, and inhibited osteocyte-specific DKK1 and Sost expression (negative regulators of osteoblasts) in glucocorticoid-treated skeletons, revealing improved functional activities of osteoblasts and osteocytes. Nevertheless, PEMF exerted no effect on circulating bone-resorbing cytokines (serum TRAcP5b and CTX-1) or skeletal gene expression of osteoclast-specific markers (TRAP and cathepsin K). PEMF also significantly upregulated skeletal gene expression of canonical Wnt ligands (Wnt1, Wnt3a and Wnt10b), whereas PEMF did not alter non-canonical Wnt5a expression. This study demonstrates that PEMF treatment improves bone mass, strength and porous implant osseointegration in glucocorticoid-treated rabbits by promoting potent bone-anabolic action, which is associated with canonical Wnt-mediated improvement in osteoblast and osteocyte functions. This study provides a new treatment alternative for glucocorticoid-related bone disorders in a convenient and non-invasive manner.
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Affiliation(s)
- Jing Cai
- College of Basic Medicine, Shaanxi University of Chinese Medicine, Xianyang, China; Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Xi Shao
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Qiuju Yang
- Department of Anesthesia, The First Clinical College, Xinxiang Medical University, Xinxiang, China
| | - Yongqing Yang
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Zedong Yan
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Erping Luo
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Xue Feng
- Department of Cell Biology, School of Medicine, Northwest University, Xi'an, China.
| | - Da Jing
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
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Zhang D, Qi J, Qiao S, Liu L, Wang B, Zhao Z. A strategy for controlling degradation in vitro of carbon fiber-reinforced polylactic acid composites (by combining fiber modification and pulsed electromagnetic fields). JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:1964-1977. [PMID: 30141735 DOI: 10.1080/09205063.2018.1495798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Carbon fiber-reinforced polylactic acid (C/PLA) composites are a human bone-fixation material, but control of the material's degradation remains a major factor hindering its widespread use. In this study, a combined method for controlling the degradation performance in vitro of C/PLA composites was designed. In this strategy, carbon fibers for C/PLA composite reinforcement were prepared in both modified and unmodified forms. A pulsed electromagnetic field (PEF) was then selectively applied during the subsequent degradation process. Results and analysis showed that the interfacial ester bonding between modified carbon fibers and PLA matrices significantly affected degradation in vitro of C/PLA composite. However, PEF affected the degradation performance of C/PLA composites and, after PEF treatment, the material's water absorption, mass retention, and bending and shearing strengths were changed to varying degrees. This method, by combining fiber modification and pulsed electromagnetic fields (abbreviated as CMP) provided a new strategy for the controlled degradation of C/PLA composites in human skeletal fixation.
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Affiliation(s)
- Di Zhang
- a School of Materials Science and Engineering , Liaoning University of Technology , Jinzhou , China
| | - Jingang Qi
- a School of Materials Science and Engineering , Liaoning University of Technology , Jinzhou , China
| | - Sifan Qiao
- a School of Materials Science and Engineering , Liaoning University of Technology , Jinzhou , China
| | - Liang Liu
- a School of Materials Science and Engineering , Liaoning University of Technology , Jinzhou , China
| | - Bing Wang
- a School of Materials Science and Engineering , Liaoning University of Technology , Jinzhou , China
| | - Zuofu Zhao
- a School of Materials Science and Engineering , Liaoning University of Technology , Jinzhou , China
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Katsnelson B, Tsepilov N, Panov V, Sutunkova M, Varaksin A, Gurvich V, Minigalieva I, Valamina I, Makeyev O, Meshtcheryakova E. Applying theoretical premises of binary toxicity mathematical modeling to combined impacts of chemical plus physical agents (A case study of moderate subchronic exposures to fluoride and static magnetic field). Food Chem Toxicol 2016; 95:110-20. [DOI: 10.1016/j.fct.2016.06.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 06/07/2016] [Accepted: 06/25/2016] [Indexed: 11/25/2022]
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The Correlation Between Dielectric Properties and Microstructure of Femoral Bone in Rats with Different Bone Qualities. Ann Biomed Eng 2014; 42:1238-49. [DOI: 10.1007/s10439-014-0998-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Accepted: 03/08/2014] [Indexed: 10/25/2022]
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