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Al-Griw MA, Alghazeer R, Ratemi HW, Ben-Othman ME, Tabagah R, Shamlan G, Habibullah MM, Alnajeebi AM, Babteen NA, Eskandrani AA, Al-Farga A, Alansari WS. Blockade of L-Type Ca 2+ Channel Activity Alleviates Oligodendrocyte Pathology following Brain Injury in Male Rats. Curr Issues Mol Biol 2023; 45:3953-3964. [PMID: 37232721 DOI: 10.3390/cimb45050252] [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: 03/15/2023] [Revised: 04/09/2023] [Accepted: 04/16/2023] [Indexed: 05/27/2023] Open
Abstract
A growing body of studies suggests that Ca2+ signaling controls a variety of biological processes in brain elements. Activation of L-type voltage-operated Ca2+ channels (VOCCs) plays a role in the development of oligodendrocyte (OL) lineage loss, and indicates that the blocking of these channels may be an effective way to inhibit OL lineage cell loss. For this study, 10.5-day-old male Sprague-Dawley rats were used to generate cerebellar tissue slices. The slice tissues were cultured and randomly allocated to one of four groups (six each) and treated as follows: Group I, (sham control); Group II, 0.1% dimethyl sulfoxide (DMSO) only (vehicle control); Group III, injury (INJ); Group IV, (INJ and treatment with NIF). The injury was simulated by exposing the slice tissues to 20 min of oxygen-glucose deprivation (OGD). At 3 days post-treatment, the survival, apoptosis, and proliferation of the OL lineages were measured and compared. Results: In the INJ group, there was a decrease in mature myelin basic protein+ OLs (MBP+ OLs) and their precursors, NG2+ OPCs (Nerve-glia antigen 2+ oligodendrocyte precursor cell), compared with controls. A significant elevation was observed in the NG2+ OPCs and apoptotic MBP+ OLs as confirmed by a TUNEL assay. However, the cell proliferation rate was decreased in NG2+ OPCs. NIF increased OL survival as measured by apoptosis rate in both OL lineages and preserved the rate of proliferation in the NG2+ OPCs. Conclusions: Activation of L-type VOCCs may contribute to OL pathology in association with reduced mitosis of OPCs following brain injury as a strategy to treat demyelinating diseases.
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Affiliation(s)
- Mohamed A Al-Griw
- Department of Histology and Genetics, Faculty of Medicine, University of Tripoli, Tripoli 13203, Libya
| | - Rabia Alghazeer
- Department of Chemistry, Faculty of Science, University of Tripoli, Tripoli 50676, Libya
| | - Haithm W Ratemi
- Department of Genetic Engineering, Biotechnology Research Center (BTRC), Tripoli 30313, Libya
| | - Mohamed E Ben-Othman
- Department of Clinical Pathology, Faculty of Veterinary Medicine, University of Tripoli, Tripoli 13662, Libya
| | - Refaat Tabagah
- Division Developmental Biology, Zoology Department, Faculty of Sciences, University of Tripoli, Tripoli 13662, Libya
| | - Ghalia Shamlan
- Department of Food Science and Nutrition, College of Food and Agriculture Sciences, King Saud University, Riyadh 11362, Saudi Arabia
| | - Mahmmoud M Habibullah
- Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia
| | - Afnan M Alnajeebi
- Biochemistry Department, Faculty of Science, University of Jeddah, Jeddah 21577, Saudi Arabia
| | - Nouf A Babteen
- Biochemistry Department, Faculty of Science, University of Jeddah, Jeddah 21577, Saudi Arabia
| | - Areej A Eskandrani
- Chemistry Department, Faculty of Science, Taibah University, Medina 30002, Saudi Arabia
| | - Ammar Al-Farga
- Biochemistry Department, Faculty of Science, University of Jeddah, Jeddah 21577, Saudi Arabia
| | - Wafa S Alansari
- Biochemistry Department, Faculty of Science, University of Jeddah, Jeddah 21577, Saudi Arabia
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