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Vincentiis S, Alcantara JA, Rzezak P, Kerr DS, Gattaz WF, van der Linden H, Dos Santos B, Arruda F, Chaim-Avancini T, Serpa MH, Fernandes F, Moreno RA, Busatto GF, Alessi R, Demarque R, Valente KD. Genetic polymorphisms of the serotonin transporter are not related with depression in temporal lobe epilepsy caused by hippocampal sclerosis. Epilepsy Behav 2021; 117:107854. [PMID: 33639436 DOI: 10.1016/j.yebeh.2021.107854] [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: 01/11/2021] [Revised: 02/05/2021] [Accepted: 02/05/2021] [Indexed: 11/20/2022]
Abstract
BACKGROUND Mood disorders are the most frequent psychiatric disorders in patients with temporal lobe epilepsy caused by hippocampal sclerosis (TLE-HS). The pathophysiological mechanisms in common between TLE and mood disorders include abnormalities in the serotonergic pathway. We aimed to evaluate the association between serotonin transporter genetic polymorphisms - 5-HTTLPR and 5-HTTVNTR - and the presence of mood disorders in patients with TLE-HS. METHODS We evaluated 119 patients with TLE-HS, with and without psychiatric disorder; 146 patients diagnosed with major depressive disorder (MDD), and 113 healthy volunteers. Individuals were genotyped for the 5-HTTLPR and 5-HTTVNTR polymorphisms. RESULTS No difference was observed between the TLE-HS groups, healthy controls, and MDD without epilepsy. There was a correlation between the 12-allele of the 5-HTTVNTR and the family history of patients with epilepsy with TLE-HS (p = 0.013). CONCLUSIONS In this study conducted in two Brazilian centers, the serotonin transporter polymorphisms evaluated cannot be associated with depressive disorder in patients with TLE-HS. Still, they do have some influence over some clinical characteristics of epilepsy in TLE-HS. These data may not be reproduced in other populations with distinct ethnic characteristics.
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Affiliation(s)
- Silvia Vincentiis
- Laboratory of Clinical Neurophysiology, Institute and Department of Psychiatry, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil.
| | - Juliana A Alcantara
- Laboratory of Clinical Neurophysiology, Institute and Department of Psychiatry, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil
| | - Patricia Rzezak
- Laboratory of Clinical Neurophysiology, Institute and Department of Psychiatry, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil
| | - Daniel S Kerr
- Laboratory of Neuroscience (LIM-27), Department of Psychiatry, Faculdade de Medicina da Universidade de Sao Paulo (FMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil
| | - Wagner F Gattaz
- Laboratory of Neuroscience (LIM-27), Department of Psychiatry, Faculdade de Medicina da Universidade de Sao Paulo (FMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil.
| | - Helio van der Linden
- Goiania Neurological Institute, Praça Gilson Alves de Souza, 140, Setor Bueno, Goiania, GO 74210-250, Brazil
| | - Bernardo Dos Santos
- Laboratory of Clinical Neurophysiology, Institute and Department of Psychiatry, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil
| | - Francisco Arruda
- Goiania Neurological Institute, Praça Gilson Alves de Souza, 140, Setor Bueno, Goiania, GO 74210-250, Brazil
| | - Tiffany Chaim-Avancini
- Laboratory of Psychiatric Neuroimaging (LIM-21), Department of Psychiatry, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil
| | - Mauricio H Serpa
- Laboratory of Psychiatric Neuroimaging (LIM-21), Department of Psychiatry, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil
| | - Fernando Fernandes
- Mood Disorders Unit (GRUDA), Institute and Department of Psychiatry, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil
| | - Ricardo A Moreno
- Mood Disorders Unit (GRUDA), Institute and Department of Psychiatry, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil
| | - Geraldo F Busatto
- Laboratory of Psychiatric Neuroimaging (LIM-21), Department of Psychiatry, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil
| | - Ruda Alessi
- Laboratory of Clinical Neurophysiology, Institute and Department of Psychiatry, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil
| | - Renata Demarque
- Laboratory of Clinical Neurophysiology, Institute and Department of Psychiatry, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil
| | - Kette D Valente
- Laboratory of Clinical Neurophysiology, Institute and Department of Psychiatry, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP), Rua Dr. Ovidio Pires de Campos, 785, Cerqueira Cesar, Sao Paulo, SP 05403-010, Brazil.
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Zhang YX, Qiao S, Cai MT, Lai QL, Shen CH, Ding MP. Association between autophagy-related protein 5 gene polymorphisms and epilepsy in Chinese patients. Neurosci Lett 2021; 753:135870. [PMID: 33812933 DOI: 10.1016/j.neulet.2021.135870] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 03/16/2021] [Accepted: 03/29/2021] [Indexed: 12/24/2022]
Abstract
Autophagy is a highly conserved degradative process that has been associated with a number of neurological diseases. Autophagy-related protein 5 (ATG5) is one of the key genes for the regulation of the autophagy pathway. In this study, we investigated the potential relationship between ATG5 gene polymorphisms and epilepsy in Han Chinese population. We enrolled 112 patients with epilepsy and 100 healthy controls and detected the genotypic and allelic data of 6 single nucleotide polymorphisms (SNPs) in ATG5 (rs2245214, rs510432, rs548234, rs573775, rs6568431 and rs6937876). The associations of 6 SNPs and epilepsy were evaluated. The results revealed the genotypes of overdominant of rs510432 between controls and patients showed significant differences (Poverdominant = 0.003). Subgroup analysis showed a highly significant association of rs510432 with late-onset epilepsy (Poverdominant = 0.006), and rs548234 were associated with the susceptibility to temporal lobe epilepsy (Pcodominant = 0.002, Poverdominant = 0.006). Furthermore, ATG5 was not linked to either early-onset epilepsy or drug-resistant epilepsy (p > 0.0083). These results demonstrated an association of an ATG5 gene variant with epilepsy, and stronger associations with several subgroups of epilepsy were identified. Our study may provide novel evidence for the role of ATG5 in epilepsy, and contribute to our understanding of the molecular mechanisms of this chronic neurological disease.
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Affiliation(s)
- Yin-Xi Zhang
- Department of Neurology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Song Qiao
- Department of Neurology, Zhejiang Hospital, Hangzhou, China
| | - Meng-Ting Cai
- Department of Neurology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Qi-Lun Lai
- Department of Neurology, Zhejiang Hospital, Hangzhou, China
| | - Chun-Hong Shen
- Department of Neurology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Mei-Ping Ding
- Department of Neurology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
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Abstract
PURPOSE OF REVIEW Depression and anxiety substantially contribute to interictal disability in patients with epilepsy (PWE). This review summarizes current studies that shed light on mechanisms of comorbidity. RECENT FINDINGS Mounting epidemiological data implicate shared risk factors for anxiety/depression and seizure propensity, but these remain largely elusive and probably vary by epilepsy type. Within PWE, these symptoms appear to be associated with unique genetic, neuropathological, and connectivity profiles. Temporal lobe epilepsy has received enormous emphasis particularly in preclinical studies of comorbidity, where candidate neurobiological mechanisms underlying bidirectionality have been tested without psychopharmacological confounds. Depression and anxiety in epilepsy reflect dysfunction within broadly distributed limbic networks that may be the cause or consequence of epileptogenesis. In refractory epilepsy, seizures and/or certain anticonvulsants may distort central emotional homeostatic mechanisms that perpetually raise seizure risk. Developing future safe and effective combined anticonvulsant-antidepressant treatments will require a detailed understanding of anatomical and molecular nodes that pleiotropically enhance seizure risk and negatively alter emotionality.
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Affiliation(s)
- Vaishnav Krishnan
- Departments of Neurology, Neuroscience and Psychiatry & Behavioral Sciences, Baylor Comprehensive Epilepsy Center, Baylor College of Medicine, One Baylor Plaza St., MS: NB302, Houston, TX, 77030, USA.
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Xiao G, Song Y, Zhang Y, Xing Y, Xu S, Lu Z, Wang M, Cai X. Cellular-Scale Microelectrode Arrays to Monitor Movement-Related Neuron Activities in the Epileptic Hippocampus of Awake Mice. IEEE Trans Biomed Eng 2020; 68:19-25. [PMID: 32356734 DOI: 10.1109/tbme.2020.2990356] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Epilepsy affects 50 million people worldwide and its pathogenesis is still unknown. In particular, the movement-related neural activities involving glutamate (Glu) and electrophysiological signals at cellular level remains unclear. METHODS A cellular-scale implantable microelectrode array (MEA) was fabricated to detect the movement-related neural activities involving Glu concentration and electrophysiological signals. Platinum and reduced graphene oxide nanocomposites were deposited to enhance the surface area. Glu oxidase (Gluox) were coated to effectively recognize Glu molecule. RESULTS Neural activities in the hippocampus of normal and epileptic mice is different, and the changes are closely connected with movement. Glu concentration and spike firing rate in the epileptic mice were much higher than those in the normal ones. And the neural activities with significant synchronization were detected in the epileptic mice even without seizure occurrence. Meanwhile, the spikes fire more intensively and Glu level became much higher during the movement of the mice compared to the stationary state. CONCLUSION The existing abnormality of neural activities in the epileptic mice are potential factors to induce a seizure. Movement may impact the neural activities and the duration of seizure. SIGNIFICANCE The MEA can monitor changes of movement, Glu and neuron discharges synchronously and provides us an effective technology to understand the neuronal disease.
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