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Mahmoud AH, Elhefnawei DM, EL-Desouky MA, Kadry MO. Reciprocal crosslink among MeCP2/BDNF /CREB signaling pinpointed in autism spectrum disorder. Toxicol Rep 2024; 12:91-99. [PMID: 38229920 PMCID: PMC10789594 DOI: 10.1016/j.toxrep.2023.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 12/01/2023] [Accepted: 12/22/2023] [Indexed: 01/18/2024] Open
Abstract
Autism spectrum disorder, or individual disability (ID), is a condition characterized by complications in social interaction, restricted repetitive behavior, and difficulties in social communication. Neuquinon (NQ) possess a powerful therapeutic potential in various neurodegenerative disease. Nevertheless, contributing to NQ's low water solubility and bioavailability, its medicinal use has been constrained. Liposomes were supposed to be prospective drug-delivering agents for NQ, crossing the blood-brain barrier (BBB), and reaching the target organs. The current investigation aims to track the signaling pathways that govern NQ and liposomal neuquinon (LNQ) action in autistic models generated by ethyl formic acid. The neurotransmitters gamma amino-butyric acid (GABA), acetylcholine (ACh), and acetylcholinesterase (AChE) in addition to, the gene expressions of brain-derived neurotrophic factor (BDNF), cAMP response element-binding protein (CREB), and methyl-CpG-binding protein 2 (MeCP2) and the DNA damage COMET analysis at different time intervals of the study, were assessed. EFA in a dose of 500 mg/kg BW was used to induce autism in rats, and then NQ and LNQ were administered in 10 mg/kg and 2 mg/kg BW, respectively. The results revealed that NQ and LNQ significantly down-regulated BDNF, GABA, and AChE; on the other hand, they up-regulated MeCP2, CREB gene expressions, and ACh action. NQ and LNQ displayed improvement in DNA damage in almost all brain regions after EFA alterations; even better results were noticed post-LNQ therapy. Therefore, it may be concluded that neuquinon and liposomal-loaded neuquinon have a therapeutic index versus EFA-induced autism in a rat model.
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Affiliation(s)
- Ahlam H. Mahmoud
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Giza 12622, Egypt
| | - Doaa M. Elhefnawei
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Giza 12622, Egypt
| | | | - Mai O. Kadry
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Giza 12622, Egypt
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El-Saied MM, Afify O, Abdelraouf ER, Oraby A, Hashish AF, Zeidan HM. BDNF, proBDNF and proBDNF/BDNF ratio with electroencephalographic abnormalities in children with attention deficit hyperactivity disorder: Possible relations to cognition and severity. Int J Dev Neurosci 2024. [PMID: 38712701 DOI: 10.1002/jdn.10332] [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: 12/13/2023] [Revised: 03/07/2024] [Accepted: 04/08/2024] [Indexed: 05/08/2024] Open
Abstract
Attention deficit hyperactivity disorder (ADHD) with and without subclinical epileptogenic discharges (SED) have been suggested to negatively affect cognitive abilities of children with ADHD. The role of brain-derived neurotrophic factor (BDNF) and its precursor proBDNF in ADHD is in need of being investigated. The aims were to evaluate the levels of serum BDNF, proBDNF and the proBDNF/BDNF ratio in addition to the potential impacts of SED on the children's cognitive abilities and the severity of ADHD. The included participants with ADHD were 30 children with normal electroencephalogram (EEG) (G1) and 30 children with SED (G2), together with 30 healthy children (G3). The cognitive abilities and severity of the disorder were evaluated. The biochemical measures were determined by ELISA. The presence of coexisting SED and nocturnal enuresis has led to a deleterious effect on cognitive processes but not on the severity. The focal epileptogenic discharge was the most common among children in G2. The levels of BDNF in Groups 1 and 2 were less than those in G3. The higher proBDNF/BDNF ratio could be related to the low BDNF levels rather than high proBDNF levels. The findings of this study highlight the importance of investigating the presence of SED and nocturnal enuresis in children with ADHD. Targeting strengthening of cognitive abilities in children with coexisting ADHD and SED is advised. The role of proBDNF in the pathophysiology of ADHD needs further investigation.
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Affiliation(s)
- Mostafa M El-Saied
- Department of Research on Children with Special Needs, Institute of Medical Research and Clinical Studies, National Research Centre, Cairo, Egypt
- Learning Disability and Neurorehabilitation Research Field, Medical Research Centre of Excellence, National Research Centre, Cairo, Egypt
| | - Omneya Afify
- Department of Pediatrics, Faculty of Medicine, Cairo University, Giza, Egypt
| | - Ehab R Abdelraouf
- Department of Research on Children with Special Needs, Institute of Medical Research and Clinical Studies, National Research Centre, Cairo, Egypt
- Learning Disability and Neurorehabilitation Research Field, Medical Research Centre of Excellence, National Research Centre, Cairo, Egypt
| | - Azza Oraby
- Department of Pediatrics, Faculty of Medicine, Cairo University, Giza, Egypt
| | - Adel F Hashish
- Department of Research on Children with Special Needs, Institute of Medical Research and Clinical Studies, National Research Centre, Cairo, Egypt
| | - Hala M Zeidan
- Department of Research on Children with Special Needs, Institute of Medical Research and Clinical Studies, National Research Centre, Cairo, Egypt
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Zeidan HM, Nashaat NH, Hemimi M, Hashish AF, Elsaeid A, Abd El-Ghaffar N, Helal SI, Meguid NA. Expression Patterns of miRNAs in Egyptian Children with ADHD: Clinical Study with Correlation Analysis. J Mol Neurosci 2024; 74:46. [PMID: 38652370 DOI: 10.1007/s12031-024-02220-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 04/04/2024] [Indexed: 04/25/2024]
Abstract
ADHD has huge knowledge gaps concerning its etiology. MicroRNAs (miRNAs) provide promising diagnostic biomarkers of human pathophysiology and may be a novel therapeutic option. The aim was to investigate the levels of miR-34c-3p, miR-155, miR-138-1, miR-296-5p, and plasma brain-derived neurotrophic factor (BDNF) in a group of children with ADHD compared to neurotypicals and to explore correlations between these measures and some clinical data. The participants were children with ADHD in Group I (N = 41; age: 8.2 ± 2) and neurotypical ones in Group II (N = 40; age: 8.6 ± 2.5). Group I was subjected to clinical examination, the Stanford Binet intelligence scale-5, the preschool language scale, and Conner's parent rating scale-R. Measuring the expression levels of the miRNAs was performed by qRT-PCR for all participants. The BDNF level was measured by ELISA. The lowest scores on the IQ subtest were knowledge and working memory. No discrepancies were noticed between the receptive and expressive language ages. The highest scores on the Conner's scale were those for cognitive problems. Participants with ADHD exhibited higher plasma BDNF levels compared to controls (p = 0.0003). Expression patterns of only miR-34c-3p and miR-138-1 were downregulated with significant statistical differences (p˂0.01). However, expression levels of miR-296-5p showed negative correlation with the total scores of IQ (p = 0.03). MiR-34c-3p, miR-138-1, while BDNF showed good diagnostic potential. The downregulated levels of miR-34c-3p and miR-138-1, together with high BDNF levels, are suggested to be involved in the etiology of ADHD in Egyptian children. Gender differences influenced the expression patterns of miRNAs only in children with ADHD.
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Affiliation(s)
- Hala M Zeidan
- Research on Children with Special Needs Department, Medical Research and Clinical Studies Institute, National Research Centre, El-Buhouth St., Dokki 12622, Cairo, Egypt.
| | - Neveen Hassan Nashaat
- Research on Children with Special Needs Department, Medical Research and Clinical Studies Institute, National Research Centre, El-Buhouth St., Dokki 12622, Cairo, Egypt
| | - Maha Hemimi
- Research on Children with Special Needs Department, Medical Research and Clinical Studies Institute, National Research Centre, El-Buhouth St., Dokki 12622, Cairo, Egypt
| | - Adel F Hashish
- Research on Children with Special Needs Department, Medical Research and Clinical Studies Institute, National Research Centre, El-Buhouth St., Dokki 12622, Cairo, Egypt
| | - Amal Elsaeid
- Research on Children with Special Needs Department, Medical Research and Clinical Studies Institute, National Research Centre, El-Buhouth St., Dokki 12622, Cairo, Egypt
| | - Nagwa Abd El-Ghaffar
- Clinical and Chemical Pathology Department, Medical Research and Clinical Studies Institute, National Research Centre, El-Buhouth St., Dokki 12622, Cairo, Egypt
| | - Suzette I Helal
- Research on Children with Special Needs Department, Medical Research and Clinical Studies Institute, National Research Centre, El-Buhouth St., Dokki 12622, Cairo, Egypt
| | - Nagwa A Meguid
- Research on Children with Special Needs Department, Medical Research and Clinical Studies Institute, National Research Centre, El-Buhouth St., Dokki 12622, Cairo, Egypt
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de Lucca MS, Pimentel MEO, Raimundo CKO, Henriques BD, Moreira TR, Cardoso SA, de Miranda DM. Brain-derived neurotrophic factor (BDNF) levels in children and adolescents before and after stimulant use a systematic review and metanalysis. Prog Neuropsychopharmacol Biol Psychiatry 2023; 125:110761. [PMID: 37044279 DOI: 10.1016/j.pnpbp.2023.110761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/02/2023] [Accepted: 04/06/2023] [Indexed: 04/14/2023]
Abstract
BACKGROUND Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder associated with cognitive, social, and academic impairment. Neurotrophins, particularly brain-derived neurotrophic factor (BDNF), have been implicated in the pathophysiology of ADHD and response to stimulant treatment. This review aims to investigate the relationship between BDNF levels in ADHD before and after treatment with stimulants in childhood. METHODS This systematic review followed PRISMA-P guidelines and included 19 studies from PubMed, EMBASE, Cochrane, Capes Periodic, and Lilacs databases. The studies were evaluated for risk of bias and level of evidence. RESULTS There was no significant difference in peripheral BDNF levels in ADHD children before or after methylphenidate treatment. Additionally, there was no statistically significant difference in BDNF levels between children with ADHD and controls. DISCUSSION Understanding the role of BDNF in ADHD may provide insight into the disorder's pathophysiology and facilitate the development of biological markers for clinical use. CONCLUSION Our findings suggest that BDNF levels are not significantly affected by methylphenidate treatment in ADHD children and do not differ from controls. SYSTEMATIC REVIEW REGISTRATION "Brain-derived neurotrophic factor (BDNF) levels in children and adolescents before and after stimulant use: a systematic review". Number CRD42021261519.
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Affiliation(s)
- Marina Silva de Lucca
- Department of Medicine and Nursing, Federal University of Viçosa, MG CEP 36.570 -900, Brazil; Postgraduate Program in Health Sciences at the Federal University of Minas Gerais, MG CEP 30.130-100, Brazil.
| | | | | | - Bruno David Henriques
- Department of Medicine and Nursing, Federal University of Viçosa, MG CEP 36.570 -900, Brazil
| | - Tiago Ricardo Moreira
- Department of Medicine and Nursing, Federal University of Viçosa, MG CEP 36.570 -900, Brazil
| | - Sílvia Almeida Cardoso
- Department of Medicine and Nursing, Federal University of Viçosa, MG CEP 36.570 -900, Brazil.
| | - Débora Marques de Miranda
- Postgraduate Program in Health Sciences at the Federal University of Minas Gerais, MG CEP 30.130-100, Brazil
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Gabryelska A, Turkiewicz S, Ditmer M, Sochal M. Neurotrophins in the Neuropathophysiology, Course, and Complications of Obstructive Sleep Apnea-A Narrative Review. Int J Mol Sci 2023; 24:ijms24031808. [PMID: 36768132 PMCID: PMC9916304 DOI: 10.3390/ijms24031808] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/04/2022] [Accepted: 01/11/2023] [Indexed: 01/18/2023] Open
Abstract
Obstructive sleep apnea (OSA) is a disorder characterized by chronic intermittent hypoxia and sleep fragmentation due to recurring airway collapse during sleep. It is highly prevalent in modern societies, and due to its pleiotropic influence on the organism and numerous sequelae, it burdens patients and physicians. Neurotrophins (NTs), proteins that modulate the functioning and development of the central nervous system, such as brain-derived neurotrophic factor (BDNF), have been associated with OSA, primarily due to their probable involvement in offsetting the decline in cognitive functions which accompanies OSA. However, NTs influence multiple aspects of biological functioning, such as immunity. Thus, extensive evaluation of their role in OSA might enlighten the mechanism behind some of its elusive features, such as the increased risk of developing an immune-mediated disease or the association of OSA with cardiovascular diseases. In this review, we examine the interactions between NTs and OSA and discuss their contribution to OSA pathophysiology, complications, as well as comorbidities.
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Chutko L, Yakovenko E, Surushkina S, Anisimova T, Sergeev A, Didur M, Cherednichenko D. Emotional and behavioral dysregulation in children with attention deficit hyperactivity disorder. Zh Nevrol Psikhiatr Im S S Korsakova 2022; 122:100-107. [DOI: 10.17116/jnevro2022122061100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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