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Chaib S, Bouillot C, Bouvard S, Vidal B, Zimmer L, Levigoureux E. Single subanesthetic dose of ketamine produces delayed impact on brain [ 18F]FDG PET imaging and metabolic connectivity in rats. Front Neurosci 2023; 17:1213941. [PMID: 37521685 PMCID: PMC10372660 DOI: 10.3389/fnins.2023.1213941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/23/2023] [Indexed: 08/01/2023] Open
Abstract
Introduction Ketamine, a glutamate NMDA receptor antagonist, is suggested to act very rapidly and durably on the depressive symptoms including treatment-resistant patients but its mechanisms of action remain unclear. There is a requirement for non-invasive biomarkers, such as imaging techniques, which hold promise in monitoring and elucidating its therapeutic impact. Methods We explored the glucose metabolism with [18F]FDG positron emission tomography (PET) in ten male rats in a longitudinal study designed to compare imaging patterns immediately after acute subanaesthetic ketamine injection (i.p. 10 mg/kg) with its sustained effects, 5 days later. Changes in [18F]FDG uptake following ketamine administration were estimated using a voxel-based analysis with SPM12 software, and a region of interest (ROI) analysis. A metabolic connectivity analysis was also conducted to estimate the immediate and delayed effects of ketamine on the inter-individual metabolic covariance between the ROIs. Results No significant difference was observed in brain glucose metabolism immediately following acute subanaesthetic ketamine injection. However, a significant decrease of glucose uptake appeared 5 days later, reflecting a sustained and delayed effect of ketamine in the frontal and the cingulate cortex. An increase in the raphe, caudate and cerebellum was also measured. Moreover, metabolic connectivity analyses revealed a significant decrease between the hippocampus and the thalamus at day 5 compared to the baseline. Discussion This study showed that the differences in metabolic profiles appeared belatedly, 5 days after ketamine administration, particularly in the cortical regions. Finally, this methodology will help to characterize the effects of future molecules for the treatment of treatment resistant depression.
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Affiliation(s)
- Sarah Chaib
- Université Claude Bernard Lyon 1, Lyon Neuroscience Research Center, CNRS, INSERM, Lyon, France
- Hospices Civils de Lyon, Lyon, France
| | | | - Sandrine Bouvard
- Université Claude Bernard Lyon 1, Lyon Neuroscience Research Center, CNRS, INSERM, Lyon, France
| | - Benjamin Vidal
- Université Claude Bernard Lyon 1, Lyon Neuroscience Research Center, CNRS, INSERM, Lyon, France
| | - Luc Zimmer
- Université Claude Bernard Lyon 1, Lyon Neuroscience Research Center, CNRS, INSERM, Lyon, France
- Hospices Civils de Lyon, Lyon, France
- CERMEP-Imaging Platform, Bron, France
| | - Elise Levigoureux
- Université Claude Bernard Lyon 1, Lyon Neuroscience Research Center, CNRS, INSERM, Lyon, France
- Hospices Civils de Lyon, Lyon, France
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Gasparyan A, Navarro D, Navarrete F, Manzanares J. Pharmacological strategies for post-traumatic stress disorder (PTSD): From animal to clinical studies. Neuropharmacology 2022; 218:109211. [PMID: 35973598 DOI: 10.1016/j.neuropharm.2022.109211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 07/26/2022] [Accepted: 08/03/2022] [Indexed: 01/27/2023]
Abstract
Post-traumatic stress disorder (PTSD) is a disabling psychiatric condition with a critical familiar, personal, and social impact. Patients diagnosed with PTSD show various symptoms, including anxiety, depression, psychotic episodes, and sleep disturbances, complicating their therapeutic management. Only sertraline and paroxetine, two selective serotonin reuptake inhibitors, are approved by different international agencies to treat PTSD. In addition, these drugs are generally combined with psychotherapy to achieve positive results. However, these pharmacological strategies present limited efficacy. Nearly half of the PTSD patients do not experience remission of symptoms, possibly due to the high prevalence of psychiatric comorbidities. Therefore, in clinical practice, other off-label medications are common, even though the effectiveness of these drugs needs to be further investigated. In this line, antipsychotics, antiepileptics, adrenergic blockers, benzodiazepines, and other emerging pharmacological agents have aroused interest as potential therapeutic tools to improve some specific symptoms of PTSD. Thus, this review is focused on the most widely used drugs for the pharmacological treatment of PTSD with a translational approach, including clinical and preclinical studies, to emphasize the need to develop safer and more effective medications.
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Affiliation(s)
- Ani Gasparyan
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Avda. de Ramón y Cajal s/n, San Juan de Alicante, 03550, Alicante, Spain; Redes de Investigación Cooperativa Orientada a Resultados en Salud (RICORS), Red de Investigación en Atención Primaria de Adicciones (RIAPAd), Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain; Departamento de Medicina Clínica, Universidad Miguel Hernández, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - Daniela Navarro
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Avda. de Ramón y Cajal s/n, San Juan de Alicante, 03550, Alicante, Spain; Redes de Investigación Cooperativa Orientada a Resultados en Salud (RICORS), Red de Investigación en Atención Primaria de Adicciones (RIAPAd), Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain; Departamento de Medicina Clínica, Universidad Miguel Hernández, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - Francisco Navarrete
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Avda. de Ramón y Cajal s/n, San Juan de Alicante, 03550, Alicante, Spain; Redes de Investigación Cooperativa Orientada a Resultados en Salud (RICORS), Red de Investigación en Atención Primaria de Adicciones (RIAPAd), Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain; Departamento de Medicina Clínica, Universidad Miguel Hernández, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - Jorge Manzanares
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Avda. de Ramón y Cajal s/n, San Juan de Alicante, 03550, Alicante, Spain; Redes de Investigación Cooperativa Orientada a Resultados en Salud (RICORS), Red de Investigación en Atención Primaria de Adicciones (RIAPAd), Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain; Departamento de Medicina Clínica, Universidad Miguel Hernández, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain.
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Fan JF, Tang ZH, Wang SY, Lei S, Zhang B, Tian SW. Ketamine enhances novel object recognition memory reconsolidation via the BDNF/TrkB pathway in mice. Physiol Behav 2021; 242:113626. [PMID: 34673052 DOI: 10.1016/j.physbeh.2021.113626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 10/13/2021] [Accepted: 10/15/2021] [Indexed: 11/17/2022]
Abstract
In addition to the antidepressant properties of ketamine at subanesthetic doses, studies have revealed ketamine's influence on memory acquisition, consolidation, and reconsolidation. The effects of acute low-dose ketamine administration on conditioned memory have been investigated extensively in rodents through conditioned fear memory and morphine-induced conditioned place preference. In contrast to conditioned memory, the novel object recognition (NOR) task assesses the natural format of memory by exploiting the rodents' natural preference for novelty. Acute low-dose ketamine administration impairs NOR acquisition and consolidation, but its influence on reconsolidation remains unclear. We investigated the issue as well as the involvement of BDNF/TrkB pathway in this process by administering ketamine (i.p., 10 mg/kg, immediately or 6 h after reactivation, or without reactivation) and ANA-12 (i.p., 0.5 mg/kg, 5 min after ketamine/vehicle administration). ANA-12 is a selective antagonist for the BDNF TrkB receptor. Ketamine administration, immediately after (rather than without) reactivation, significantly increased the NOR preference index, thus suggesting an enhanced memory reconsolidation rather than consolidation. Ketamine exerted no significant effect when administered 6 h after reactivation, thereby suggesting 6 h to be an effective time window. ANA-12 administration significantly reduced the ketamine-induced NOR preference index increase, thus suggesting that the blockage of ketamine improves NOR reconsolidation. However, this blockage had no significant effect on the ketamine-induced hippocampal BDNF level increase. In conclusion, acute low-dose ketamine administration improves NOR memory reconsolidation by increasing hippocampal BDNF levels and subsequent BDNF binding to the TrkB receptor.
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Affiliation(s)
- Jian-Feng Fan
- Guangxi Key Laboratory of Brain and Cognitive Neuroscience, Faculty of Basic Medical Sciences, Guilin Medical University, Guilin Guangxi, 541199, China; Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang Hunan, 421001, China
| | - Zhen-Hui Tang
- Guangxi Key Laboratory of Brain and Cognitive Neuroscience, Faculty of Basic Medical Sciences, Guilin Medical University, Guilin Guangxi, 541199, China; Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang Hunan, 421001, China
| | - Shi-Yi Wang
- Pharmacy School of Guilin Medical University, Guilin Medical University, Guilin Guangxi, 541199, China
| | - Si Lei
- Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang Hunan, 421001, China
| | - Bo Zhang
- Guangxi Key Laboratory of Brain and Cognitive Neuroscience, Faculty of Basic Medical Sciences, Guilin Medical University, Guilin Guangxi, 541199, China; School of Public Health, Guilin Medical University, Guilin Guangxi, 541199, China.
| | - Shao-Wen Tian
- Guangxi Key Laboratory of Brain and Cognitive Neuroscience, Faculty of Basic Medical Sciences, Guilin Medical University, Guilin Guangxi, 541199, China; School of Public Health, Guilin Medical University, Guilin Guangxi, 541199, China; Pharmacy School of Guilin Medical University, Guilin Medical University, Guilin Guangxi, 541199, China; Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang Hunan, 421001, China.
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Antunes FTT, de Souza AH, Caminski ES, Greggio S, Venturin GT, da Costa JC, Taffarel M, Rebelo IN, Gomez MV, Correa DS, Vilanova FN, Regner AP, Dallegrave E. Neuroprotective effects of the CTK 01512-2 toxin against neurotoxicity induced by 3-nitropropionic acid in rats. Neurotoxicology 2021; 87:30-42. [PMID: 34478769 DOI: 10.1016/j.neuro.2021.08.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/28/2021] [Accepted: 08/28/2021] [Indexed: 01/07/2023]
Abstract
The mitochondrial inhibitor 3-nitropropionic acid (3-NP) induces excitotoxicity. The authors hypothesized that CTK 01512-2, a recombinant peptide calcium channel N-type blocker, and the TRPA1 antagonist, could show neuroprotective effects. The male Wistar rats received 3-NP [25 mg/kg (i.p.) for 7 days], and a treatment of CTK 01512-2 was delivered intrathecally (i.t.), thrice a week. The neuroprotective effects were evaluated by [18F]FDG MicroPET analysis. The CTK 01512-2 toxin was able to reestablish similar glucose uptakes on the control animals. To detect the neurobehavioral effects from 3-NP, three protocols (6.25, 12.5, 18.75 mg/kg of 3-NP (i.p.), for 3, 4, and 6 days, respectively) were evaluated by performance tests (open field test, walk footprint, elevated plus-maze, Y-maze, and the object recognition test). Important disabilities in the gait of the rats were seen, as well as memory deficits, and anxious behavior in the animals that were treated with all 3-NP protocols. The dose of 18.75 mg/kg (for 3 days) showed the most pronounced behavioral effects and lethality, while the rats treated with 12.5 mg/kg (for 4 days) showed behavioral effects similar to the 6.25 mg/kg dose (for 6 days). The third protocol was then repeated and the rats were treated with the CTK 01512-2 toxin to be evaluated behaviorally again. The recombinant peptide prevented all of the gait-evaluated parameters that were induced by 3-NP at a 6.25 mg/kg dose, which displayed an improvement in the exploratory activities. Overall, these results have reinforced the positive effects of CTK 01512-2 against the behavioral changes that were induced by the mitochondrial inhibitor 3-NP.
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Affiliation(s)
- Flavia Tasmin Techera Antunes
- Program of Postgraduation in Cellular and Molecular Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil.
| | - Alessandra Hubner de Souza
- Program of Postgraduation in Cellular and Molecular Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil.
| | - Emanuelle Sistherenn Caminski
- Laboratory of Toxicology Research, The Federal University of Health Science of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil.
| | - Samuel Greggio
- Centro de Pesquisa Pré-Clínica, Instituto do Cérebro do Rio Grande do Sul, Brain Institute (Brains), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, 90610-000, Brazil.
| | - Gianina Teribele Venturin
- Centro de Pesquisa Pré-Clínica, Instituto do Cérebro do Rio Grande do Sul, Brain Institute (Brains), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, 90610-000, Brazil.
| | - Jaderson Costa da Costa
- Centro de Pesquisa Pré-Clínica, Instituto do Cérebro do Rio Grande do Sul, Brain Institute (Brains), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, 90610-000, Brazil.
| | - Maitê Taffarel
- Laboratory of Pharmacy, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil.
| | - Isadora Nunes Rebelo
- Laboratory of Pharmacy, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil.
| | - Marcus Vinicius Gomez
- Institute of Teaching and Research of Santa Casa de Belo Horizonte, Belo Horizonte, Brazil.
| | - Dione Silva Correa
- Department of Chemistry, Lutheran University of Brazil, Canoas, RS, Brazil.
| | | | - Andrea Pereira Regner
- Program of Postgraduation in Cellular and Molecular Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil.
| | - Eliane Dallegrave
- Laboratory of Toxicology Research, The Federal University of Health Science of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil.
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Zhang M, Spencer HF, Berman RY, Radford KD, Choi KH. Effects of subanesthetic intravenous ketamine infusion on neuroplasticity-related proteins in male and female Sprague-Dawley rats. IBRO Neurosci Rep 2021; 11:42-51. [PMID: 34286313 PMCID: PMC8273220 DOI: 10.1016/j.ibneur.2021.06.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 10/30/2022] Open
Abstract
Although ketamine, a multimodal dissociative anesthetic, is frequently used for analgesia and treatment-resistant major depression, molecular mechanisms of ketamine remain unclear. Specifically, differences in the effects of ketamine on neuroplasticity-related proteins in the brains of males and females need further investigation. In the current study, adult male and female Sprague-Dawley rats with an indwelling jugular venous catheter received an intravenous ketamine infusion (0, 10, or 40 mg/kg, 2-h), starting with a 2 mg/kg bolus for ketamine groups. Spontaneous locomotor activity was monitored by infrared photobeams during the infusion. Two hours after the infusion, brain tissue was dissected to obtain the medial prefrontal cortex (mPFC), hippocampus including the CA1, CA3, and dentate gyrus, and amygdala followed by Western blot analyses of a transcription factor (c-Fos), brain-derived neurotrophic factor (BDNF), and phosphorylated extracellular signal-regulated kinase (pERK). The 10 mg/kg ketamine infusion suppressed locomotor activity in male and female rats while the 40 mg/kg infusion stimulated activity only in female rats. In the mPFC, 10 mg/kg ketamine reduced pERK levels in male rats while 40 mg/kg ketamine increased c-Fos levels in male and female rats. Female rats in proestrus/estrus phases showed greater ketamine-induced c-Fos elevation as compared to those in diestrus phase. In the amygdala, 10 and 40 mg/kg ketamine increased c-Fos levels in female, but not male, rats. In the hippocampus, 10 mg/kg ketamine reduced BDNF levels in male, but not female, rats. Taken together, the current data suggest that subanesthetic doses of intravenous ketamine infusions produce differences in neuroplasticity-related proteins in the brains of male and female rats.
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Affiliation(s)
- Michael Zhang
- Department of Psychiatry, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA.,Center for the Study of Traumatic Stress, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA
| | - Haley F Spencer
- Program in Neuroscience, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA
| | - Rina Y Berman
- Department of Psychiatry, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA.,Center for the Study of Traumatic Stress, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA
| | - Kennett D Radford
- Daniel K. Inouye Graduate School of Nursing, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA
| | - Kwang H Choi
- Department of Psychiatry, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA.,Center for the Study of Traumatic Stress, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA.,Program in Neuroscience, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA.,Daniel K. Inouye Graduate School of Nursing, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA
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Chírico MTT, Guedes MR, Vieira LG, Reis TO, Dos Santos AM, Souza ABF, Ribeiro IML, Noronha SISR, Nogueira KO, Oliveira LAM, Gomes FAR, Silva FC, Chianca-Jr DA, Bezerra FS, de Menezes RCA. Lasting effects of ketamine and isoflurane administration on anxiety- and panic-like behavioral responses in Wistar rats. Life Sci 2021; 276:119423. [PMID: 33785344 DOI: 10.1016/j.lfs.2021.119423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/18/2021] [Accepted: 03/20/2021] [Indexed: 10/21/2022]
Abstract
In clinical and laboratory practice, the use of anesthetics is essential in order to perform surgeries. Anesthetics, besides causing sedation and muscle relaxation, promote several physiological outcomes, such as psychotomimetic alterations, increased heart rate, and blood pressure. However, studies depicting the behavioral effect induced by ketamine and isoflurane are conflicting. In the present study, we assessed the behavioral effects precipitated by ketamine and isoflurane administration. We have also evaluated the ketamine effect on cell cytotoxicity and viability in an amygdalar neuronal primary cell culture. Ketamine (80 mg/kg) caused an anxiogenic effect in rats exposed to the elevated T-maze test (ETM) 2 and 7 days after ketamine administration. Ketamine (40 and 80 mg/kg) administration also decreased panic-like behavior in the ETM. In the light/dark test, ketamine had an anxiogenic effect. Isoflurane did not change animal behavior on the ETM. Neither ketamine nor isoflurane changed the spontaneous locomotor activity in the open field test. However, isoflurane-treated animals explored less frequently the OF central area seven days after treatment. Neither anesthetic caused oxidative damage in the liver. Ketamine also reduced cellular metabolism and led to neuronal death in amygdalar primary cell cultures. Thus, our work provides evidence that ketamine and isoflurane induce pronounced long lasting anxiety-related behaviors in male rats.
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Affiliation(s)
- Máira Tereza Talma Chírico
- Department of Biological Sciences, Laboratory of Cardiovascular Physiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil
| | - Mariana Reis Guedes
- Department of Biological Sciences, Laboratory of Cardiovascular Physiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil
| | - Lucas Gabriel Vieira
- Department of Biological Sciences, Laboratory of Cardiovascular Physiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil
| | - Thayane Oliveira Reis
- Department of Biological Sciences, Laboratory of Cardiovascular Physiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil
| | - Aline Maria Dos Santos
- Department of Biological Sciences, Laboratory of Cardiovascular Physiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil
| | - Ana Beatriz Farias Souza
- Department of Biological Sciences, Laboratory of Experimental Pathophysiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil
| | - Iara Mariana Léllis Ribeiro
- Department of Biological Sciences, Laboratory of Biomaterials and Experimental Pathology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil
| | - Sylvana I S R Noronha
- Department of Biological Sciences, Laboratory of Cardiovascular Physiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil
| | - Katiane O Nogueira
- Department of Biological Sciences, Laboratory of Biomaterials and Experimental Pathology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil.
| | - Laser Antonio Machado Oliveira
- Department of Biological Sciences, Laboratory of Biomaterials and Experimental Pathology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil.
| | - Fabiana Aparecida Rodrigues Gomes
- Department of Biological Sciences, Laboratory of Cardiovascular Physiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil
| | - Fernanda Cacilda Silva
- Department of Biological Sciences, Laboratory of Cardiovascular Physiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil.
| | - Deoclécio Alves Chianca-Jr
- Department of Biological Sciences, Laboratory of Cardiovascular Physiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil.
| | - Frank Silva Bezerra
- Department of Biological Sciences, Laboratory of Experimental Pathophysiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil.
| | - Rodrigo Cunha Alvim de Menezes
- Department of Biological Sciences, Laboratory of Cardiovascular Physiology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000, Brazil.
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BDNF Protein and BDNF mRNA Expression of the Medial Prefrontal Cortex, Amygdala, and Hippocampus during Situational Reminder in the PTSD Animal Model. Behav Neurol 2021; 2021:6657716. [PMID: 33763156 PMCID: PMC7964114 DOI: 10.1155/2021/6657716] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/09/2021] [Accepted: 02/22/2021] [Indexed: 11/17/2022] Open
Abstract
Whether BDNF protein and BDNF mRNA expression of the medial prefrontal cortex (mPFC; cingulated cortex area 1 (Cg1), prelimbic cortex (PrL), and infralimbic cortex (IL)), amygdala, and hippocampus (CA1, CA2, CA3, and dentate gyrus (DG)) was involved in fear of posttraumatic stress disorder (PTSD) during the situational reminder of traumatic memory remains uncertain. Footshock rats experienced an inescapable footshock (3 mA, 10 s), and later we have measured fear behavior for 2 min in the footshock environment on the situational reminder phase. In the final retrieval of situational reminder, BDNF protein and mRNA levels were measured. The results showed that higher BDNF expression occurred in the Cg1, PrL, and amygdala. Lower BDNF expression occurred in the IL, CA1, CA2, CA3, and DG. BDNF mRNA levels were higher in the mPFC and amygdala but lower in the hippocampus. The neural connection analysis showed that BDNF protein and BDNF mRNA exhibited weak connections among the mPFC, amygdala, and hippocampus during situational reminders. The present data did not support the previous viewpoint in neuroimaging research that the mPFC and hippocampus revealed hypoactivity and the amygdala exhibited hyperactivity for PTSD symptoms. These findings should be discussed with the previous evidence and provide clinical implications for PTSD.
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Almeida CGM, Costa-Higuchi K, Piovesan AR, Moro CF, Venturin GT, Greggio S, Costa-Ferro ZS, Salamoni SD, Peigneur S, Tytgat J, de Lima ME, Silva CND, Vinadé L, Rowan EG, DaCosta JC, Dal Belo CA, Carlini CR. Neurotoxic and convulsant effects induced by jack bean ureases on the mammalian nervous system. Toxicology 2021; 454:152737. [PMID: 33631299 DOI: 10.1016/j.tox.2021.152737] [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: 11/09/2020] [Revised: 01/18/2021] [Accepted: 02/20/2021] [Indexed: 12/14/2022]
Abstract
Ureases are microbial virulence factors either because of the enzymatic release of ammonia or due to many other non-enzymatic effects. Here we studied two neurotoxic urease isoforms, Canatoxin (CNTX) and Jack Bean Urease (JBU), produced by the plant Canavalia ensiformis, whose mechanisms of action remain elusive. The neurotoxins provoke convulsions in rodents (LD50 ∼2 mg/kg) and stimulate exocytosis in cell models, affecting intracellular calcium levels. Here, electrophysiological and brain imaging techniques were applied to elucidate their mode of action. While systemic administration of the toxins causes tonic-clonic seizures in rodents, JBU injected into rat hippocampus induced spike-wave discharges similar to absence-like seizures. JBU reduced the amplitude of compound action potential from mouse sciatic nerve in a tetrodotoxin-insensitive manner. Hippocampal slices from CNTX-injected animals or slices treated in vitro with JBU failed to induce long term potentiation upon tetanic stimulation. Rat cortical synaptosomes treated with JBU released L-glutamate. JBU increased the intracellular calcium levels and spontaneous firing rate in rat hippocampus neurons. MicroPET scans of CNTX-injected rats revealed increased [18]Fluoro-deoxyglucose uptake in epileptogenesis-related areas like hippocampus and thalamus. Curiously, CNTX did not affect voltage-gated sodium, calcium or potassium channels currents, neither did it interfere on cholinergic receptors, suggesting an indirect mode of action that could be related to the ureases' membrane-disturbing properties. Understanding the neurotoxic mode of action of C. ensiformis ureases could help to unveil the so far underappreciated relevance of these toxins in diseases caused by urease-producing microorganisms, in which the human central nervous system is affected.
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Affiliation(s)
- Carlos Gabriel Moreira Almeida
- Laboratory of Neurotoxins, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Graduate Program in Medicine and Health Sciences, School of Medicine, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Kiyo Costa-Higuchi
- Laboratory of Neurotoxins, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Graduate Program in Materials Technology and Engineering, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Angela Regina Piovesan
- Laboratory of Neurotoxins, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Graduate Program in Celular and Molecular Biology, Center of Biotechnology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Carlo Frederico Moro
- Laboratory of Neurotoxins, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Graduate Program in Medicine and Health Sciences, School of Medicine, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Gianina Teribele Venturin
- Preclinical Research Center, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Samuel Greggio
- Preclinical Research Center, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Zaquer Susana Costa-Ferro
- Laboratory of Neuroscience, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Simone Denise Salamoni
- Laboratory of Neuroscience, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Steve Peigneur
- Laboratory of Toxicology & Pharmacology, University of Leuven (KU Leuven), Leuven, Belgium
| | - Jan Tytgat
- Laboratory of Toxicology & Pharmacology, University of Leuven (KU Leuven), Leuven, Belgium
| | - Maria Elena de Lima
- Institute of Teaching and Research, Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | | | - Lúcia Vinadé
- Laboratory of Neurobiology and Toxinology (Lanetox), Universidade Federal do Pampa, São Gabriel, RS, Brazil
| | - Edward G Rowan
- Strathclyde Institute for Biomedical Sciences, University of Strathclyde, Glasgow, UK
| | - Jaderson Costa DaCosta
- Laboratory of Neuroscience, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Cháriston André Dal Belo
- Laboratory of Neurobiology and Toxinology (Lanetox), Universidade Federal do Pampa, São Gabriel, RS, Brazil.
| | - Celia Regina Carlini
- Laboratory of Neurotoxins, Brain Institute of Rio Grande do Sul (BraIns), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Graduate Program in Medicine and Health Sciences, School of Medicine, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Scholl of Medicine, Pontificía Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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9
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Choi KH, Berman RY, Zhang M, Spencer HF, Radford KD. Effects of Ketamine on Rodent Fear Memory. Int J Mol Sci 2020; 21:ijms21197173. [PMID: 32998470 PMCID: PMC7582895 DOI: 10.3390/ijms21197173] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 11/25/2022] Open
Abstract
Ketamine, a multimodal anesthetic drug, has become increasingly popular in the treatment of pain following traumatic injury as well as treatment-resistant major depressive disorders. However, the psychological impact of this dissociative medication on the development of stress-related disorders such as post-traumatic stress disorder (PTSD) remains controversial. To address these concerns, preclinical studies have investigated the effects of ketamine administration on fear memory and stress-related behaviors in laboratory animals. Despite a well-documented line of research examining the effects of ketamine on fear memory, there is a lack of literature reviews on this important topic. Therefore, this review article summarizes the current preclinical literature on ketamine and fear memory with a particular emphasis on the route, dose, and timing of ketamine administration in rodent fear conditioning studies. Additionally, this review describes the molecular mechanisms by which ketamine may impact fear memory and stress-related behaviors. Overall, findings from previous studies are inconsistent in that fear memory may be increased, decreased, or unaltered following ketamine administration in rodents. These conflicting results can be explained by factors such as the route, dose, and timing of ketamine administration; the interaction between ketamine and stress; and individual variability in the rodent response to ketamine. This review also recommends that future preclinical studies utilize a clinically relevant route of administration and account for biological sex differences to improve translation between preclinical and clinical investigations.
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Affiliation(s)
- Kwang H. Choi
- Department of Psychiatry, Uniformed Services University, Bethesda, MD 20814, USA; (K.H.C.); (R.Y.B.); (M.Z.)
- Center for the Study of Traumatic Stress, Uniformed Services University, Bethesda, MD 20814, USA
- Program in Neuroscience, Uniformed Services University, Bethesda, MD 20814, USA;
- Daniel K. Inouye Graduate School of Nursing, Uniformed Services University, Bethesda, MD 20814, USA
| | - Rina Y. Berman
- Department of Psychiatry, Uniformed Services University, Bethesda, MD 20814, USA; (K.H.C.); (R.Y.B.); (M.Z.)
| | - Michael Zhang
- Department of Psychiatry, Uniformed Services University, Bethesda, MD 20814, USA; (K.H.C.); (R.Y.B.); (M.Z.)
- Center for the Study of Traumatic Stress, Uniformed Services University, Bethesda, MD 20814, USA
| | - Haley F. Spencer
- Program in Neuroscience, Uniformed Services University, Bethesda, MD 20814, USA;
| | - Kennett D. Radford
- Daniel K. Inouye Graduate School of Nursing, Uniformed Services University, Bethesda, MD 20814, USA
- Correspondence:
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10
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Silote GP, de Oliveira SFS, Ribeiro DE, Machado MS, Andreatini R, Joca SRL, Beijamini V. Ketamine effects on anxiety and fear-related behaviors: Current literature evidence and new findings. Prog Neuropsychopharmacol Biol Psychiatry 2020; 100:109878. [PMID: 31982463 DOI: 10.1016/j.pnpbp.2020.109878] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 01/16/2020] [Accepted: 01/23/2020] [Indexed: 12/19/2022]
Abstract
Ketamine, a non-competitive N-methyl-D-aspartate (NMDA) receptor antagonist, presents a rapid and sustained antidepressant effect in clinical and preclinical studies. Regarding ketamine effects on anxiety, there is a widespread discordance among pre-clinical studies. To address this issue, the present study reviewed the literature (electronic database MEDLINE) to summarize the profile of ketamine effects in animal tests of anxiety/fear. We found that ketamine anxiety/fear-related effects may depend on the anxiety paradigm, schedule of ketamine administration and tested species. Moreover, there was no report of ketamine effects in animal tests of fear related to panic disorder (PD). Based on that finding, we evaluated if treatment with ketamine and another NMDA antagonist, MK-801, would induce acute and sustained (24 hours later) anxiolytic and/or panicolytic-like effects in animals exposed to the elevated T-maze (ETM). The ETM evaluates, in the same animal, conflict-evoked and fear behaviors, which are related, respectively, to generalized anxiety disorder and PD. Male Wistar rats were systemically treated with racemic ketamine (10, 30 and 80 mg/kg) or MK-801 (0.05 and 0.1 mg/kg) and tested in the ETM in the same day or 24 hours after their administration. Ketamine did not affect the behavioral tasks performed in the ETM acutely or 24 h later. MK-801 impaired inhibitory avoidance in the ETM only at 45 min post-injection, suggesting a rapid but not sustained anxiolytic-like effect. Altogether our results suggest that ketamine might have mixed effects in anxiety tests while it does not affect panic-related behaviors.
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Affiliation(s)
- Gabriela P Silote
- Biochemistry and Pharmacology Graduate Program, Federal University of Espirito Santo, Vitoria, ES, Brazil; Department of Biomolecular Sciences, School of Pharmaceutical Sciences, University of São Paulo, Ribeirão Preto, SP, Brazil; Translational Neuropsychiatry Unit (TNU), Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Sabrina F S de Oliveira
- Department of Pharmaceutical Sciences, Health Science Center, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Deidiane E Ribeiro
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Mayara S Machado
- Department of Pharmaceutical Sciences, Health Science Center, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Roberto Andreatini
- Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Sâmia R L Joca
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences, University of São Paulo, Ribeirão Preto, SP, Brazil; Aarhus Institute of Advanced Studies (AIAS), Aarhus University, Denmark
| | - Vanessa Beijamini
- Biochemistry and Pharmacology Graduate Program, Federal University of Espirito Santo, Vitoria, ES, Brazil; Department of Pharmaceutical Sciences, Health Science Center, Federal University of Espirito Santo, Vitoria, ES, Brazil; Pharmaceutical Sciences Graduate Program, Health Sciences Center, Federal University of Espirito Santo, Vitoria, ES, Brazil.
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11
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COSKUN HS, USTA MB, SAY F, YILDIRIM AM. Factors affecting post-traumatic stress disorder in children with orthopedic injury. JOURNAL OF CLINICAL AND INVESTIGATIVE SURGERY 2020. [DOI: 10.25083/2559.5555/5.1/24.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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12
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Radford KD, Spencer HF, Zhang M, Berman RY, Girasek QL, Choi KH. Association between intravenous ketamine-induced stress hormone levels and long-term fear memory renewal in Sprague-Dawley rats. Behav Brain Res 2019; 378:112259. [PMID: 31560919 DOI: 10.1016/j.bbr.2019.112259] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/17/2019] [Accepted: 09/23/2019] [Indexed: 01/02/2023]
Abstract
Ketamine is a multimodal dissociative anesthetic and analgesic that is widely used after traumatic injury. We previously reported that an analgesic dose of intravenous (IV) ketamine infusion (10 mg/kg, 2-h) after fear conditioning enhanced short-term fear memory in rats. Here, we investigated the effects of the same dose of an IV ketamine infusion on plasma stress hormone levels and long-term fear memory in rats. Adult male Sprague-Dawley rats (9-week-old with an average weight of 308 g upon arrival) received a ketamine infusion (0 or 10 mg/kg, 2-h) immediately after auditory fear conditioning (three auditory tone and footshock [0.6 mA, 1-s] pairings) on Day 0. After the infusion, a blood sample was collected from a jugular vein catheter for corticosterone and progesterone assays, and each animal was tested on tail flick to measure thermal antinociception. One week later, animals were tested on fear extinction acquisition (Day 7), fear extinction retrieval (Day 8), and fear renewal (Day 9). The IV ketamine infusion, compared to the saline infusion, reduced locomotor activity (sedation), increased tail flick latency (antinociception), and elevated plasma corticosterone and progesterone levels. The ketamine infusion did not alter long-term fear memory extinction or fear renewal. However, elevated corticosterone and progesterone levels resulting from the ketamine infusion were correlated with sedation, antinociception, and long-term fear memory renewal. These results suggest that individual differences in sensitivity to acute ketamine may predict vulnerability to develop fear-related disorders.
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Affiliation(s)
- Kennett D Radford
- Daniel K. Inouye Graduate School of Nursing, Uniformed Services University, Bethesda, MD, 20814, USA
| | - Haley F Spencer
- Program in Neuroscience, Uniformed Services University, Bethesda, MD 20814, USA
| | - Michael Zhang
- Department of Psychiatry, Uniformed Services University, Bethesda, MD, 20814, USA; Center for the Study of Traumatic Stress, Uniformed Services University, Bethesda, MD, 20814, USA
| | - Rina Y Berman
- Daniel K. Inouye Graduate School of Nursing, Uniformed Services University, Bethesda, MD, 20814, USA; Department of Psychiatry, Uniformed Services University, Bethesda, MD, 20814, USA
| | - Quinn L Girasek
- Department of Psychiatry, Uniformed Services University, Bethesda, MD, 20814, USA
| | - Kwang H Choi
- Daniel K. Inouye Graduate School of Nursing, Uniformed Services University, Bethesda, MD, 20814, USA; Program in Neuroscience, Uniformed Services University, Bethesda, MD 20814, USA; Department of Psychiatry, Uniformed Services University, Bethesda, MD, 20814, USA; Center for the Study of Traumatic Stress, Uniformed Services University, Bethesda, MD, 20814, USA.
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13
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Neves LT, Neves PFR, Paz LV, Zancan M, Milanesi BB, Lazzari GZ, da Silva RB, de Oliveira MMBP, Venturin GT, Greggio S, da Costa JC, Rasia-Filho AA, Mestriner RG, Xavier LL. Increases in dendritic spine density in BLA without metabolic changes in a rodent model of PTSD. Brain Struct Funct 2019; 224:2857-2870. [PMID: 31440907 DOI: 10.1007/s00429-019-01943-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 08/13/2019] [Indexed: 01/07/2023]
Abstract
Imaging studies have shown abnormal amygdala function in patients with posttraumatic stress disorder (PTSD). In addition, alterations in synaptic plasticity have been associated with psychiatric disorders and previous reports have indicated alterations in the amygdala morphology, especially in basolateral (BLA) neurons, are associated with stress-related disorders. Since, some individuals exposed to a traumatic event develop PTSD, the goals of this study were to evaluate the early effects of PTSD on amygdala glucose metabolism and analyze the possible BLA dendritic spine plasticity in animals with different levels of behavioral response. We employed the inescapable footshock protocol as an experimental model of PTSD and the animals were classified according to the duration of their freezing behavior into distinct groups: "extreme behavioral response" (EBR) and "minimal behavioral response". We evaluated the amygdala glucose metabolism at baseline (before the stress protocol) and immediately after the situational reminder using the microPET and the radiopharmaceutical 18F-FDG. The BLA dendritic spines were analyzed according to their number, density, shape and morphometric parameters. Our results show the EBR animals exhibited longer freezing behavior and increased proximal dendritic spines density in the BLA neurons. Neither the amygdaloid glucose metabolism, the types of dendritic spines nor their morphometric parameters showed statistically significant differences. The extreme behavior response induced by this PTSD protocol produces an early increase in BLA spine density, which is unassociated with either additional changes in the shape of spines or metabolic changes in the whole amygdala of Wistar rats.
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Affiliation(s)
- Laura Tartari Neves
- Laboratório de Biologia Celular e Tecidual, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, Prédio 12C, Sala 104, Porto Alegre, Rio Grande do Sul, CEP 90619-900, Brazil.,Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Paula Fernanda Ribas Neves
- Laboratório de Biologia Celular e Tecidual, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, Prédio 12C, Sala 104, Porto Alegre, Rio Grande do Sul, CEP 90619-900, Brazil.,Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Lisiê Valéria Paz
- Laboratório de Biologia Celular e Tecidual, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, Prédio 12C, Sala 104, Porto Alegre, Rio Grande do Sul, CEP 90619-900, Brazil.,Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Mariana Zancan
- Departamento de Ciências Básicas/Fisiologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Bruna Bueno Milanesi
- Laboratório de Biologia Celular e Tecidual, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, Prédio 12C, Sala 104, Porto Alegre, Rio Grande do Sul, CEP 90619-900, Brazil
| | - Gabriele Zenato Lazzari
- Laboratório de Biologia Celular e Tecidual, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, Prédio 12C, Sala 104, Porto Alegre, Rio Grande do Sul, CEP 90619-900, Brazil
| | - Rafaela Barboza da Silva
- Laboratório de Biologia Celular e Tecidual, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, Prédio 12C, Sala 104, Porto Alegre, Rio Grande do Sul, CEP 90619-900, Brazil
| | - Marina Mena Barreto Peres de Oliveira
- Laboratório de Biologia Celular e Tecidual, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, Prédio 12C, Sala 104, Porto Alegre, Rio Grande do Sul, CEP 90619-900, Brazil
| | - Gianina Teribele Venturin
- Instituto do Cérebro do Rio Grande do Sul (InsCer), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Samuel Greggio
- Instituto do Cérebro do Rio Grande do Sul (InsCer), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Jaderson Costa da Costa
- Instituto do Cérebro do Rio Grande do Sul (InsCer), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Alberto A Rasia-Filho
- Departamento de Ciências Básicas/Fisiologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Régis Gemerasca Mestriner
- Laboratório de Biologia Celular e Tecidual, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, Prédio 12C, Sala 104, Porto Alegre, Rio Grande do Sul, CEP 90619-900, Brazil.,Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Léder Leal Xavier
- Laboratório de Biologia Celular e Tecidual, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, Prédio 12C, Sala 104, Porto Alegre, Rio Grande do Sul, CEP 90619-900, Brazil. .,Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil.
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14
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Zhang M, Radford KD, Driscoll M, Purnomo S, Kim J, Choi KH. Effects of subanesthetic intravenous ketamine infusion on neuroplasticity-related proteins in the prefrontal cortex, amygdala, and hippocampus of Sprague-Dawley rats. IBRO Rep 2019; 6:87-94. [PMID: 30723838 PMCID: PMC6350099 DOI: 10.1016/j.ibror.2019.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 01/15/2019] [Indexed: 12/18/2022] Open
Abstract
Ketamine, a multimodal dissociative anesthetic, is a powerful analgesic administered following trauma due to its hemodynamic and respiratory stability. However, ketamine can cause hallucination and dissociation which may adversely impact traumatic memory after an injury. The effects of ketamine on proteins implicated in neural plasticity are unclear due to different doses, routes, and timing of drug administration in previous studies. Here, we investigated the effects of a single intravenous (IV) ketamine infusion on protein levels in three brain regions of rats. Adult male Sprague-Dawley rats with indwelling IV catheters underwent an auditory fear conditioning (three pairings of tone and mild footshock 0.8 mA, 0.5 s) and received a high dose of IV ketamine (0 or 40 mg/kg/2 h) infusion (Experiment 1). In a follow-up study, animals received a low dose of IV ketamine (0 or 10 mg/kg/2 h) infusion (Experiment 2). Two hours after the infusion, brain tissue from the medial prefrontal cortex (mPFC), hippocampus, and amygdala were collected for western blot analyses. Protein levels of a transcription factor (c-Fos), brain-derived neurotrophic factor (BDNF), and phosphorylated extracellular signal-regulated kinase (pERK) were quantified in these regions. The 40 mg/kg ketamine infusion increased c-Fos levels in the mPFC and amygdala as well as pERK levels in the mPFC and hippocampus. The 10 mg/kg ketamine infusion increased BDNF levels in the amygdala, but decreased pERK levels in the mPFC and hippocampus. These findings suggest that a clinically relevant route of ketamine administration produces dose-dependent and brain region-specific effects on proteins involved in neuroplasticity.
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Affiliation(s)
- Michael Zhang
- Department of Psychiatry, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, United States
- Center for the Study of Traumatic Stress, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, United States
| | - Kennett D. Radford
- Daniel K. Inouye Graduate School of Nursing, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, United States
| | - Mercedes Driscoll
- National Capital Consortium Psychiatry Residency Program, Walter Reed National Military Medical Center, Bethesda, MD 20814, United States
| | - Salsabila Purnomo
- Department of Psychiatry, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, United States
| | - Jean Kim
- Department of Psychiatry, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, United States
| | - Kwang H. Choi
- Department of Psychiatry, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, United States
- Center for the Study of Traumatic Stress, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, United States
- Daniel K. Inouye Graduate School of Nursing, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, United States
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15
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Radford KD, Park TY, Jaiswal S, Pan H, Knutsen A, Zhang M, Driscoll M, Osborne-Smith LA, Dardzinski BJ, Choi KH. Enhanced fear memories and brain glucose metabolism ( 18F-FDG-PET) following sub-anesthetic intravenous ketamine infusion in Sprague-Dawley rats. Transl Psychiatry 2018; 8:263. [PMID: 30504810 PMCID: PMC6269482 DOI: 10.1038/s41398-018-0310-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 09/25/2018] [Accepted: 11/08/2018] [Indexed: 12/18/2022] Open
Abstract
Ketamine is a multimodal dissociative anesthetic, which provides powerful analgesia for victims with traumatic injury. However, the impact of ketamine administration in the peri-trauma period on the development of post-traumatic stress disorder (PTSD) remains controversial. Moreover, there is a major gap between preclinical and clinical studies because they utilize different doses and routes of ketamine administration. Here, we investigated the effects of sub-anesthetic doses of intravenous (IV) ketamine infusion on fear memory and brain glucose metabolism (BGluM) in rats. Male Sprague-Dawley rats received an IV ketamine infusion (0, 2, 10, and 20 mg/kg, 2 h) or an intraperitoneal (IP) injection (0 and 10 mg/kg) following an auditory fear conditioning (3 pairings of tone and foot shock [0.6 mA, 1 s]) on day 0. Fear memory retrieval, fear extinction, and fear recall were tested on days 2, 3, and 4, respectively. The effects of IV ketamine infusion (0 and 10 mg/kg) on BGluM were measured using 18F-fluoro-deoxyglucose positron emission tomography (FDG-PET) and computed tomography (CT). The IV ketamine infusion dose-dependently enhanced fear memory retrieval, delayed fear extinction, and increased fear recall in rats. The IV ketamine (10 mg/kg) increased BGluM in the hippocampus, amygdala, and hypothalamus, while decreasing it in the cerebellum. On the contrary, a single ketamine injection (10 mg/kg, IP) after fear conditioning facilitated fear memory extinction in rats. The current findings suggest that ketamine may produce differential effects on fear memory depending on the route and duration of ketamine administration.
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Affiliation(s)
- Kennett D. Radford
- 0000 0001 0421 5525grid.265436.0Daniel K. Inouye Graduate School of Nursing, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA
| | - Thomas Y. Park
- 0000 0001 0421 5525grid.265436.0Department of Psychiatry, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA ,0000 0001 0421 5525grid.265436.0Center for the Study of Traumatic Stress, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA
| | - Shalini Jaiswal
- 0000 0001 0421 5525grid.265436.0Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA
| | - Hongna Pan
- 0000 0001 0421 5525grid.265436.0Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA
| | - Andrew Knutsen
- 0000 0001 0421 5525grid.265436.0Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA
| | - Michael Zhang
- 0000 0001 0421 5525grid.265436.0Department of Psychiatry, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA ,0000 0001 0421 5525grid.265436.0Center for the Study of Traumatic Stress, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA
| | - Mercedes Driscoll
- 0000 0001 0560 6544grid.414467.4National Capital Consortium Psychiatry Residency Program, Walter Reed National Military Medical Center, Bethesda, MD 20814 USA
| | - Lisa A. Osborne-Smith
- 0000 0000 9758 5690grid.5288.7Nurse Anesthesia Program, Oregon Health and Science University, Portland, OR 97239 USA
| | - Bernard J. Dardzinski
- 0000 0001 0421 5525grid.265436.0Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA ,0000 0001 0421 5525grid.265436.0Department of Radiology and Radiological Sciences, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA
| | - Kwang H. Choi
- 0000 0001 0421 5525grid.265436.0Daniel K. Inouye Graduate School of Nursing, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA ,0000 0001 0421 5525grid.265436.0Department of Psychiatry, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA ,0000 0001 0421 5525grid.265436.0Center for the Study of Traumatic Stress, Uniformed Services University of the Health Sciences, Bethesda, MD 20814 USA
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