1
|
Al-Otaibi KM, Alghamdi BS, Al-Ghamdi MA, Mansouri RA, Ashraf GM, Omar UM. Therapeutic effect of combination vitamin D3 and siponimod on remyelination and modulate microglia activation in cuprizone mouse model of multiple sclerosis. Front Behav Neurosci 2023; 16:1068736. [PMID: 36688131 PMCID: PMC9849768 DOI: 10.3389/fnbeh.2022.1068736] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 11/29/2022] [Indexed: 01/07/2023] Open
Abstract
Stimulation of remyelination is critical for the treatment of multiple sclerosis (MS) to alleviate symptoms and protect the myelin sheath from further damage. The current study aimed to investigate the possible therapeutic effects of combining vitamin D3 (Vit D3) and siponimod (Sipo) on enhancing remyelination and modulating microglia phenotypes in the cuprizone (CPZ) demyelination mouse model. The study was divided into two stages; demyelination (first 5 weeks) and remyelination (last 4 weeks). In the first 5 weeks, 85 mice were randomly divided into two groups, control (n = 20, standard rodent chow) and CPZ (n = 65, 0.3% CPZ mixed with chow for 6 weeks, followed by 3 weeks of standard rodent chow). At week 5, the CPZ group was re-divided into four groups (n = 14) for remyelination stages; untreated CPZ (0.2 ml of CMC orally), CPZ+Vit D3 (800 IU/kg Vit D3 orally), CPZ+Sipo (1.5 mg/kg Sipo orally), and CPZ+Vit D3 (800 IU/kg Vit D3) + Sipo (1.5 mg/kg Sipo orally). Various behavioral tasks were performed to evaluate motor performance. Luxol Fast Blue (LFB) staining, the expression level of myelin basic protein (MBP), and M1/M2 microglia phenotype genes were assessed in the corpus callosum (CC). The results showed that the combination of Vit D3 and Sipo improved behavioral deficits, significantly promoted remyelination, and modulated expression levels of microglia phenotype genes in the CC at early and late remyelination stages. These results demonstrate for the first time that a combination of Vit D3 and Sipo can improve the remyelination process in the cuprizone (CPZ) mouse model by attenuating the M1 microglia phenotype. This may help to improve the treatment of MS patients.
Collapse
Affiliation(s)
- Kholoud M. Al-Otaibi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia,Department of Chemistry, Faculty of Science, Albaha University, Albaha, Saudi Arabia,*Correspondence: Badrah S. Alghamdi Kholoud M. Al-Otaibi
| | - Badrah S. Alghamdi
- Department of Physiology, Neuroscience Unit, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia,Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia,*Correspondence: Badrah S. Alghamdi Kholoud M. Al-Otaibi
| | - Maryam A. Al-Ghamdi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia,Vitamin D Pharmacogenomics Research Group, King Abdulaziz University, Jeddah, Saudi Arabia,Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Rasha A. Mansouri
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ghulam Md Ashraf
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia,Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ulfat M. Omar
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia,Princess Dr. Najla Bint Saud Al-Saud Center for Excellence Research in Biotechnology, King Abdulaziz University, Jeddah, Saudi Arabia
| |
Collapse
|
2
|
Pieróg M, Socała K, Doboszewska U, Wyska E, Guz L, Szopa A, Serefko A, Poleszak E, Wlaź P. Effects of new antiseizure drugs on seizure activity and anxiety-like behavior in adult zebrafish. Toxicol Appl Pharmacol 2021; 427:115655. [PMID: 34329640 DOI: 10.1016/j.taap.2021.115655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/05/2021] [Accepted: 07/23/2021] [Indexed: 12/13/2022]
Abstract
Several studies with larvae and adult zebrafish have shown that old and new antiseizure drugs (ASDs) produce discrepant results in seizure tests, locomotor activity or anxiety models. In this study, the pentylenetetrazole seizure test (PTZ) was performed to assess the effectiveness of four new ASDs: lamotrigine (LTG), topiramate (TPM), felbamate (FBM), and levetiracetam (LEV) in the subsequent stages of seizures in adult fish. All ASDs were administered intraperitoneally (i.p.). The time of maximal anticonvulsant effect and the dose-response relationship of the drugs were assessed. The effects of studied ASDs on the locomotor activity and the anxiety-like behavior in the color preference test were also investigated. Furthermore, drug concentrations in zebrafish homogenates were determined. LTG, TPM, and LEV significantly increased the seizure latency at three subsequent stages of seizures (SI-SIII), while FBM was effective only at SI. Locomotor activity decreased after TPM treatment. TPM and FBM exhibited a strong anxiolytic-like effect in the color preference test. LEV at the highest dose tested had a weak anxiolytic-like effect. The HPLC analysis showed average concentrations of the studied ASDs in the fish body during their maximum anticonvulsant activity. The present study shows that FBM cannot inhibit all subsequent PTZ seizure stages in the adult fish. Except for LTG, the studied drugs affected the anxiety-like behavior of treated animals. Furthermore, only TPM significantly changed locomotion parameters. Our findings support the need to accurately characterize the efficacy of new ASDs at different stages of the PTZ-induced seizures in adult zebrafish.
Collapse
Affiliation(s)
- Mateusz Pieróg
- Department of Animal Physiology and Pharmacology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Akademicka 19, PL 20-033 Lublin, Poland.
| | - Katarzyna Socała
- Department of Animal Physiology and Pharmacology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Akademicka 19, PL 20-033 Lublin, Poland
| | - Urszula Doboszewska
- Department of Animal Physiology and Pharmacology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Akademicka 19, PL 20-033 Lublin, Poland
| | - Elżbieta Wyska
- Department of Pharmacokinetics and Physical Pharmacy, Jagiellonian University Medical College, Medyczna 9, PL 30-688 Kraków, Poland
| | - Leszek Guz
- Department of Fish Diseases and Biology, Institute of Biological Bases of Animal Diseases, University of Life Sciences, Akademicka 12, PL 20-033 Lublin, Poland
| | - Aleksandra Szopa
- Laboratory of Preclinical Testing, Chair and Department of Applied and Social Pharmacy, Medical University of Lublin, Chodźki 1, PL 20-093 Lublin, Poland
| | - Anna Serefko
- Laboratory of Preclinical Testing, Chair and Department of Applied and Social Pharmacy, Medical University of Lublin, Chodźki 1, PL 20-093 Lublin, Poland
| | - Ewa Poleszak
- Laboratory of Preclinical Testing, Chair and Department of Applied and Social Pharmacy, Medical University of Lublin, Chodźki 1, PL 20-093 Lublin, Poland
| | - Piotr Wlaź
- Department of Animal Physiology and Pharmacology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Akademicka 19, PL 20-033 Lublin, Poland.
| |
Collapse
|
3
|
Chang HH, Sung PS, Liao WC, Chang AYW, Hsiao YH, Fu TF, Huang CY, Huang CW. An Open Pilot Study of the Effect and Tolerability of Add-On Multivitamin Therapy in Patients with Intractable Focal Epilepsy. Nutrients 2020; 12:nu12082359. [PMID: 32784611 PMCID: PMC7468939 DOI: 10.3390/nu12082359] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/02/2020] [Accepted: 08/04/2020] [Indexed: 01/06/2023] Open
Abstract
Observational studies have investigated the potential modulatory effect of neuronal excitability by vitamins in epilepsy. We aimed to investigate whether the addition of multivitamin therapy (B6/B9, D, E and Q) to regular antiepileptic drug therapy could ameliorate seizures in patients with refractory focal epilepsy. We conducted a prospective cohort open study to investigate the effect and tolerability of add-on multivitamin therapy (daily dose: B6 100 mg, B9 5 mg, D 1000 IU, E 400 IU and coenzyme Q10 100 mg) in patients with intractable focal epilepsy. All patients had effect and safety assessments at baseline and after one, three and six months of the supplementation. Thirty patients (11 men and 19 women) with a mean age of 42.37 ± 9.40 years were recruited and four patients discontinued. The seizure frequency significantly decreased after the six-month supplementation (9.04 ± 18.16/month and 2.06 ± 3.89/month, p = 0.045). At the final visit, 62.5% of the patients showed a ≥50% reduction in seizure frequency, and 12.5% were seizure-free. As to safety and tolerability, most patients did not experience significant adverse events, although three patients reported seizure worsening. In conclusion, this pilot study demonstrated the therapeutic potential and essentially good tolerability of add-on multivitamin therapy in patients with refractory focal epilepsy.
Collapse
Affiliation(s)
- Hui Hua Chang
- Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; (H.H.C.); (W.C.L.)
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
- Department of Pharmacy, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
- Department of Pharmacy, National Cheng Kung University Hospital, Dou-Liou Branch, Yunlin 640, Taiwan
| | - Pi-Shan Sung
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan;
| | - Wei Chen Liao
- Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; (H.H.C.); (W.C.L.)
| | - Alice Y. W. Chang
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan;
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; (Y.-H.H.); (T.-F.F.)
| | - Ya-Hsin Hsiao
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; (Y.-H.H.); (T.-F.F.)
- Institute of Behavioral Medicine, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Tzu-Fun Fu
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; (Y.-H.H.); (T.-F.F.)
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Chin-Ying Huang
- Department of Nutritional Services, National Cheng Kung University Hospital, Tainan 704, Taiwan;
| | - Chin-Wei Huang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan;
- Correspondence: ; Tel.: +886-6-2353535 (ext. 5485); Fax: +886-6-2374285
| |
Collapse
|
4
|
Song L, Luo X, Jiang Q, Chen Z, Zhou L, Wang D, Chen A. Vitamin D Supplementation is Beneficial for Children with Autism Spectrum Disorder: A Meta-analysis. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2020; 18:203-213. [PMID: 32329301 PMCID: PMC7242097 DOI: 10.9758/cpn.2020.18.2.203] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/03/2019] [Accepted: 12/02/2019] [Indexed: 01/03/2023]
Abstract
Objective We conducted a meta-analysis of randomized controlled trials to explore whether vitamin D supplementation is beneficial for symptom improvement in children with autism spectrum disorder. Methods We systematically searched the PubMed database, EMBASE, Cochrane Library, Web of Science, Sino-Med, Wanfang Data, and China National Knowledge Infrastructure mainly up to September 2019. Using a fixed effects model, we calculated the standard mean difference with 95% confidence interval. Furthermore, we analyzed baseline serum 25-hydroxyvitamin D levels and outcome scores including the Social Responsiveness Scale and Child Autism Rating Scale scores after vitamin D supplementation. Results There was no significant difference in baseline serum 25-hydroxyvitamin D levels among 203 children included from three studies in the meta-analysis. After vitamin D supplementation, the outcome scores in the experimental group were dramatically elevated compared with those in the control group (p = 0.03). Conclusion Vitamin D supplementation improves the typical symptoms of autism spectrum disorder, as indicated by reduced Social Responsiveness Scale and Child Autism Rating Scale scores; thus, it is beneficial for children with autism spectrum disorder.
Collapse
Affiliation(s)
- Liyao Song
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xiaomei Luo
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Qing Jiang
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Zhi Chen
- Nursing Department, The Affiliated Hospital of Southwest Medical University, Luzhou
| | - Lifang Zhou
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Dan Wang
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Ai Chen
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Department of Pediatric, Sichuan Provincial Hospital for Women and Children, Chengdu, Sichuan Province, China
| |
Collapse
|
5
|
Sumbul O, Aygun H. The effect of vitamin D 3 and paricalcitol on penicillin-induced epileptiform activity in rats. Epilepsy Res 2019; 159:106262. [PMID: 31887643 DOI: 10.1016/j.eplepsyres.2019.106262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 12/11/2019] [Accepted: 12/21/2019] [Indexed: 12/17/2022]
Abstract
AIM Epilepsy is a disease characterized by seizures which impair human life considerably. Vitamin D is of different systemic effects on metabolism and its deficiency is known to have a high prevalence among epilepsy patients. Paricalcitol, a vitamin D receptor agonist, has relatively fewer side effects. This study aimed to investigate the anticonvulsant effect of vitamin D3 (cholecalciferol) and paricalcitol on penicillin-induced epileptiform activity. METHOD 21 male Wistar rat weighing 180-240 g were used. After anesthetized by 1.25 g/kg urethane intraperitoneally (i.p.), rats were placed in the stereotaxic frame and tripolar electrodes were placed on the skull. The single microinjection of penicillin (2.5 μl, 500 IU, i.c.) into left sensorimotor cortex induced epileptiform activity. A single dose of 60.000 IU/kg (i.p.) vitamin D3 was administered 14 days before intracortical penicillin (500 IU) injection. Paricalcitol (10 μg/kg, i.p.) was administered 30 min before intracortical penicillin (500 IU) administration and recorded for the following 180 min. RESULTS Vitamin D3 pretreatment and paricalcitol diminished the frequency of epileptiform activity (p < 0.001) without changing the amplitude (p > 0.05) compared to the penicillin-injected group. Vitamin D3 pretreatment and paricalcitol led to an important delay in the onset of penicillin-induced epileptiform activity (p < 0.001 and p < 0.05, respectively). Vitamin D3 increased the latency of penicillin-induced epileptic activity compared to paricalcitol group (p < 0.001). CONCLUSION Results indicate that vitamin D3 and paricalcitol decreased the frequency and increased the latency of the penicillin-induced epileptic activity. Vitamin D3 was more effective than paricalcitol.
Collapse
Affiliation(s)
- Orhan Sumbul
- Department of Neurology, Faculty of Medicine, Tokat Gaziosmanpasa University, Tokat, Turkey
| | - Hatice Aygun
- Department of Physiology, Faculty of Medicine, Tokat Gaziosmanpasa University, Tokat, Turkey.
| |
Collapse
|
6
|
Abstract
Vitamin D, a fat-soluble vitamin, plays a role not only in calcium and phosphate homeostasis but also in several other functions, including cell growth and neuromuscular and immune function. The deficiency of vitamin D is highly prevalent throughout the world and has been suggested to be associated with an enhanced risk of major depressive disorder (MDD) and anxiety disorders. Therefore, vitamin D supplementation has been investigated for the prevention and treatment of these disorders. This review presents preclinical and clinical evidence of the effects of vitamin D supplementation in these disorders. Although preclinical studies provide limited evidence on the possible mechanisms underlying the beneficial effects of vitamin D for the management of these disorders, most of the clinical studies have indicated that vitamin D supplementation is associated with the reduction of symptoms of depression and anxiety, particularly when the supplementation was carried out in individuals with an MDD diagnosis (of the 13 studies in which MDD diagnosis was established, 12 had positive results with vitamin supplementation). However, some heterogeneity in the outcomes was observed and might be associated with an absence of overt psychiatric symptoms in several studies, genetic polymorphisms that alter vitamin D metabolism and bioavailability, differences in the supplementation regimen (monotherapy, adjunctive therapy, or large bolus dosing), and levels of 25-hydroxyvitamin D3 (25(OH)D) at baseline (individuals with low vitamin D status may respond better) and attained after supplementation. Additionally, factors such as sex, age, and symptom severity also need to be further explored in relation to the effects of vitamin D. Therefore, although vitamin D may hold significant potential for mental health, further preclinical and clinical studies are clearly necessary to better understand its role on mood/affect modulation.
Collapse
|
7
|
Miziak B, Chrościńska-Krawczyk M, Czuczwar SJ. An update on the problem of osteoporosis in people with epilepsy taking antiepileptic drugs. Expert Opin Drug Saf 2019; 18:679-689. [PMID: 31159612 DOI: 10.1080/14740338.2019.1625887] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Antiepileptic drugs (AEDs) have been associated with a negative impact on bone health. Comorbid disorders in patients with epilepsy may require drugs exerting a pro-osteoporotic effect, so a possibility of untoward interactions with AEDs is probable. AREAS COVERED This review discusses evidence related to the deteriorating influence of AEDs on bone, demonstrating generally stronger negative effects of conventional AEDs. Lamotrigine seems to be a safer AED in this regard. Further, literature data indicate that generally AEDs can lower the serum concentration of vitamin D. Importantly, pediatric patients are of greater risk of bone problems during therapy with AEDs, which is probably due to their effects on bone-forming processes. EXPERT OPINION Supplementation with vitamin D and calcium is frequently recommended in patients taking AEDs chronically. Whether to add a bisphosphonate remains an open question due to the limited data on this issue. A possibility of negative interactions exists between AEDs and other pro-osteoporotic drugs: glucocorticoids, proton pump inhibitors and aromatase inhibitors. Depression is a frequent comorbidity in patients with epilepsy. Clinical data indicate that antidepressant drugs may also increase the risk of fractures. Again, patients with epilepsy and depression may be exposed to a greater risk of osteoporosis.
Collapse
Affiliation(s)
- Barbara Miziak
- a Department of Pathophysiology, Medical University of Lublin , Lublin , Poland
| | | | | |
Collapse
|
8
|
Krasniqi S, Daci A. Role of the Angiotensin Pathway and its Target Therapy in Epilepsy Management. Int J Mol Sci 2019; 20:ijms20030726. [PMID: 30744022 PMCID: PMC6386974 DOI: 10.3390/ijms20030726] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/04/2019] [Accepted: 02/05/2019] [Indexed: 02/06/2023] Open
Abstract
Despite extensive research on epileptogenesis, there is still a need to investigate new pathways and targeted therapeutic approaches in this complex process. Inflammation, oxidative stress, neurotoxicity, neural cell death, gliosis, and blood–brain barrier (BBB) dysfunction are the most common causes of epileptogenesis. Moreover, the renin–angiotensin system (RAS) affects the brain’s physiological and pathological conditions, including epilepsy and its consequences. While there are a variety of available pharmacotherapeutic approaches, information on new pathways is in high demand and the achievement of treatment goals is greatly desired. Therefore, targeting the RAS presents an interesting opportunity to better understand this process. This has been supported by preclinical studies, primarily based on RAS enzyme, receptor-inhibition, and selective agonists, which are characterized by pleiotropic properties. Although there are some antiepileptic drugs (AEDs) that interfere with RAS, the main targeted therapy of this pathway contributes in synergy with AEDs. However, the RAS-targeted treatment alone, or in combination with AEDs, requires clinical studies to contribute to, and clarify, the evidence on epilepsy management. There is also a genetic association between RAS and epilepsy, and an involvement of pharmacogenetics in RAS, so there are possibilities for the development of new diagnostic and personalized treatments for epilepsy.
Collapse
Affiliation(s)
- Shaip Krasniqi
- Institute of Pharmacology and Toxicology, Faculty of Medicine, University of Prishtina, 10000 Prishtina, Kosovo.
| | - Armond Daci
- Department of Pharmacy, Faculty of Medicine, University of Prishtina, 10000 Prishtina, Kosovo.
| |
Collapse
|
9
|
Momeni SN, Masoud SA, Banafshe HR. Inhibitory effects of chronic administration of vitamin D3 on pentylenetetrazole-induced seizures in mice. Epilepsy Res 2019; 149:76-82. [DOI: 10.1016/j.eplepsyres.2018.11.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 11/10/2018] [Accepted: 11/27/2018] [Indexed: 01/30/2023]
|
10
|
Vitamin D enhances antiepileptic and cognitive effects of lamotrigine in pentylenetetrazole-kindled rats. Brain Res 2017; 1673:78-85. [DOI: 10.1016/j.brainres.2017.08.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 08/08/2017] [Accepted: 08/09/2017] [Indexed: 11/17/2022]
|
11
|
Pendo K, DeGiorgio CM. Vitamin D3 for the Treatment of Epilepsy: Basic Mechanisms, Animal Models, and Clinical Trials. Front Neurol 2016; 7:218. [PMID: 28008324 PMCID: PMC5143473 DOI: 10.3389/fneur.2016.00218] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 11/21/2016] [Indexed: 12/16/2022] Open
Abstract
There is increasing evidence supporting dietary and alternative therapies for epilepsy, including the ketogenic diet, modified Atkins diet, and omega-3 fatty acids. Vitamin D3 is actively under investigation as a potential intervention for epilepsy. Vitamin D3 is fat-soluble steroid, which shows promise in animal models of epilepsy. Basic research has shed light on the possible mechanisms by which Vitamin D3 may reduce seizures, and animal data support the efficacy of Vitamin D3 in rat and mouse models of epilepsy. Very little clinical data exist to support the treatment of human epilepsy with Vitamin D3, but positive findings from preliminary clinical trials warrant larger Phase I and II clinical trials in order to more rigorously determine the potential therapeutic value of Vitamin D3 as a treatment for human epilepsy.
Collapse
|
12
|
Uyanıkgil Y, Solmaz V, Çavuşoğlu T, Çınar BP, Çetin EÖ, Sur HY, Erbaş O. Inhibitor effect of paricalcitol in rat model of pentylenetetrazol-induced seizures. Naunyn Schmiedebergs Arch Pharmacol 2016; 389:1117-22. [PMID: 27438482 DOI: 10.1007/s00210-016-1273-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 07/05/2016] [Indexed: 12/16/2022]
Abstract
Vitamin D has various systemic effects on bone metabolism, modulation of the immune system, stabilization of the cell membrane, oxidative stress, inflammation, apoptosis, and various other hormones. Differing from active vitamin D, paricalcitol is a relatively safe VDR agonist due to its relatively few side effects. This study has investigated the anticonvulsant effect of paricalcitol in convulsions induced by pentylenetetrazole (PTZ). 36 male Sprague-Dawley rats were divided randomly into two groups: 18 for EEG recording (PTZ 35 mg/kg) and 18 for behavioral studies (PTZ 70 mg/kg). Forty-five minutes before the PTZ injection, both groups of rats were given 5 and 10 μg/kg of paricalcitol i.p., respectively. Racine convulsion scores, first myoclonic jerk time, spike percentages, and antioxidant status were evaluated in the groups. Our results showed that the Racine's Convulsion Scale (RCS) score significantly dropped in the paricalcitol-treated group, analysis of the first myoclonic jerk (FMJ) latencies demonstrated a significantly longer latency in the paricalcitol-applied group, and spike percentages at EEG recordings significantly decreased with paricalcitol. Moreover, MDA levels were lower and SOD activity were higher in the 5 μg/kg paricalcitol group compared to the saline group; these results were more prominent in 10 μg/kg paricalcitol group. Our study has demonstrated that paricalcitol has protective effects on PTZ-induced convulsions. Based on the SOD and MDA levels in our study, these effects may result from the antioxidant characteristics of paricalcitol.
Collapse
Affiliation(s)
- Yiğit Uyanıkgil
- Department of Histology and Embryology, Ege University School of Medicine, Izmir, Turkey. .,Cord Blood, Cell-Tissue Application and Research Center, Ege University, Izmir, Turkey.
| | - Volkan Solmaz
- Department of Neurology, Trakya University Medical Faculty, Edirne, Turkey
| | - Türker Çavuşoğlu
- Department of Histology and Embryology, Ege University School of Medicine, Izmir, Turkey.,Cord Blood, Cell-Tissue Application and Research Center, Ege University, Izmir, Turkey
| | - Bilge Piri Çınar
- Department of Neurology, Samsun Training and Research Hospital, Samsun, Turkey
| | - Emel Öykü Çetin
- Department of Biopharmaceutics and Pharmacokinetics, Faculty of Pharmacy, Ege University, 35100 Bornova, Izmir, Turkey
| | - Halil Yılmaz Sur
- Department of Internal Medicine, Division of Pathophysiology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Oytun Erbaş
- Department of Physiology, Bilim University School of Medicine, Istanbul, Turkey
| |
Collapse
|