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Gazarini L, Stern CA, Takahashi RN, Bertoglio LJ. Interactions of Noradrenergic, Glucocorticoid and Endocannabinoid Systems Intensify and Generalize Fear Memory Traces. Neuroscience 2021; 497:118-133. [PMID: 34560200 DOI: 10.1016/j.neuroscience.2021.09.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 09/09/2021] [Accepted: 09/13/2021] [Indexed: 12/13/2022]
Abstract
Systemic administration of drugs that activate the noradrenergic or glucocorticoid system potentiates aversive memory consolidation and reconsolidation. The opposite happens with the stimulation of endocannabinoid signaling under certain conditions. An unbalance of these interacting neurotransmitters can lead to the formation and maintenance of traumatic memories, whose strength and specificity attributes are often maladaptive. Here we aimed to investigate whether originally low-intensity and precise contextual fear memories would turn similar to traumatic ones in rats systemically administered with adrenaline, corticosterone, and/or the cannabinoid type-1 receptor antagonist/inverse agonist AM251 during consolidation or reconsolidation. The high dose of each pharmacological agent evaluated significantly increased freezing times at test in the conditioning context one and nine days later when given alone post-acquisition or post-retrieval. Their respective low dose produced no relative changes when given separately, but co-treatment of adrenaline with corticosterone or AM251 and the three drugs combined, but not corticosterone with AM251, produced results equivalent to those mentioned initially. Neither the high nor the low dose of adrenaline, corticosterone, or AM251 altered freezing times at test in a novel, neutral context two and ten days later. In contrast, animals receiving the association of their low dose exhibited significantly higher freezing times than controls. Together, the results indicate that newly acquired and destabilized threat memory traces become more intense and generalized after a combined interference acting synergistically and mimicking that reported in patients presenting stress-related psychiatric conditions.
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Affiliation(s)
- Lucas Gazarini
- Departamento de Farmacologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil; Universidade Federal de Mato Grosso do Sul, Três Lagoas, MS, Brazil.
| | - Cristina A Stern
- Departamento de Farmacologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil; Departamento de Farmacologia, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | - Reinaldo N Takahashi
- Departamento de Farmacologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Leandro J Bertoglio
- Departamento de Farmacologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.
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2
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Zhang WH, Zhang JY, Holmes A, Pan BX. Amygdala Circuit Substrates for Stress Adaptation and Adversity. Biol Psychiatry 2021; 89:847-856. [PMID: 33691931 DOI: 10.1016/j.biopsych.2020.12.026] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/24/2020] [Accepted: 12/18/2020] [Indexed: 12/19/2022]
Abstract
Brain systems that promote maintenance of homeostasis in the face of stress have significant adaptive value. A growing body of work across species demonstrates a critical role for the amygdala in promoting homeostasis by regulating physiological and behavioral responses to stress. This review focuses on an emerging body of evidence that has begun to delineate the contribution of specific long-range amygdala circuits in mediating the effects of stress. After summarizing the major anatomical features of the amygdala and its connectivity to other limbic structures, we discuss recent findings from rodents showing how stress causes structural and functional remodeling of amygdala neuronal outputs to defined cortical and subcortical target regions. We also consider some of the environmental and genetic factors that have been found to moderate how the amygdala responds to stress and relate the emerging preclinical literature to the current understanding of the pathophysiology and treatment of stress-related neuropsychiatric disorders. Future effort to translate these findings to clinics may help to develop valuable tools for prevention, diagnosis, and treatment of these diseases.
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Affiliation(s)
- Wen-Hua Zhang
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang, China
| | - Jun-Yu Zhang
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang, China
| | - Andrew Holmes
- Laboratory of Behavioral and Genomic Neuroscience, National Institute on Alcohol Abuse and Alcoholism, National Institues of Health, Bethesda, Maryland
| | - Bing-Xing Pan
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang, China.
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3
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Cannabis use and posttraumatic stress disorder comorbidity: Epidemiology, biology and the potential for novel treatment approaches. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2021; 157:143-193. [PMID: 33648669 DOI: 10.1016/bs.irn.2020.09.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cannabis use is increasing among some demographics in the United States and is tightly linked to anxiety, trauma, and stress reactivity at the epidemiological and biological level. Stress-coping motives are highly cited reasons for cannabis use. However, with increased cannabis use comes the increased susceptibility for cannabis use disorder (CUD). Indeed, CUD is highly comorbid with posttraumatic stress disorder (PTSD). Importantly, endogenous cannabinoid signaling systems play a key role in the regulation of stress reactivity and anxiety regulation, and preclinical data suggest deficiencies in this signaling system could contribute to the development of stress-related psychopathology. Furthermore, endocannabinoid deficiency states, either pre-existing or induced by trauma exposure, could provide explanatory insights into the high rates of comorbid cannabis use in patients with PTSD. Here we review clinical and preclinical literature related to the cannabis use-PTSD comorbidity, the role of endocannabinoids in the regulation of stress reactivity, and potential therapeutic implications of recent work in this area.
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4
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Carlson HN, Weiner JL. The neural, behavioral, and epidemiological underpinnings of comorbid alcohol use disorder and post-traumatic stress disorder. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2020; 157:69-142. [PMID: 33648676 DOI: 10.1016/bs.irn.2020.09.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Alcohol use disorder (AUD) and (PTSD) frequently co-occur and individuals suffering from this dual diagnosis often exhibit increased symptom severity and poorer treatment outcomes than those with only one of these diseases. Although there have been significant advances in our understanding of the neurobiological mechanisms underlying each of these disorders, the neural underpinnings of the comorbid condition remain poorly understood. This chapter summarizes recent epidemiological findings on comorbid AUD and PTSD, with a focus on vulnerable populations, the temporal relationship between these disorders, and the clinical consequences associated with the dual diagnosis. We then review animal models of the comorbid condition and emerging human and non-human animal research that is beginning to identify maladaptive neural changes common to both disorders, primarily involving functional changes in brain reward and stress networks. We end by proposing a neural framework, based on the emerging field of affective valence encoding, that may better explain the epidemiological and neural findings on AUD and PTSD.
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Affiliation(s)
- Hannah N Carlson
- Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC, United States
| | - Jeff L Weiner
- Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC, United States.
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5
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Sbarski B, Akirav I. Cannabinoids as therapeutics for PTSD. Pharmacol Ther 2020; 211:107551. [PMID: 32311373 DOI: 10.1016/j.pharmthera.2020.107551] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 03/08/2020] [Indexed: 02/09/2023]
Abstract
Post-traumatic stress disorder (PTSD) is a complex disorder that involves dysregulation of multiple neurobiological systems. The traumatic stressor plays a causal role in producing psychological dysfunction and the pattern of findings suggests that the hypothalamic-pituitary-adrenal (HPA) axis, which is instrumental for stress adaptation, is critically dysfunctional in PTSD. Given the lack of understanding of the basic mechanisms and underlying pathways that cause the disorder and its heterogeneity, PTSD poses challenges for treatment. Targeting the endocannabinoid (ECB) system to treat mental disorders, and PTSD in particular, has been the focus of research and interest in recent years. The ECB system modulates multiple functions, and drugs enhancing ECB signaling have shown promise as potential therapeutic agents in stress effects and other psychiatric and medical conditions. In this review, we focus on the interaction between the ECB-HPA systems in animal models for PTSD and in patients with PTSD. We summarize evidence supporting the use of cannabinoids in preventing and treating PTSD in preclinical and clinical studies. As the HPA system plays a key role in the mediation of the stress response and the pathophysiology of PTSD, we describe preclinical studies suggesting that enhancing ECB signaling is consistent with decreasing PTSD symptoms and dysfunction of the HPA axis. Overall, we suggest that a pharmacological treatment targeted at one system (e.g., HPA) may not be very effective because of the heterogeneity of the disorder. There are abnormalities across different neurotransmitter systems in the pathophysiology of PTSD and none of these systems function uniformly among all patients with PTSD. Hence, conceptually, enhancing ECB signaling may be a more effective avenue for pharmacological treatment.
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Affiliation(s)
- Brenda Sbarski
- School of Psychological Sciences, Integrated Brain and Behavior Research Center, University of Haifa, Haifa 3498838, Israel
| | - Irit Akirav
- School of Psychological Sciences, Integrated Brain and Behavior Research Center, University of Haifa, Haifa 3498838, Israel.
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6
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Silkis IG. The Possible Mechanism of the Appearance of Nightmares in Post-Traumatic Stress Disorder and Approaches to Their Prevention. NEUROCHEM J+ 2019. [DOI: 10.1134/s1819712419030127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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7
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Maymon N, Mizrachi Zer-Aviv T, Sabban EL, Akirav I. Neuropeptide Y and cannabinoids interaction in the amygdala after exposure to shock and reminders model of PTSD. Neuropharmacology 2019; 162:107804. [PMID: 31622603 DOI: 10.1016/j.neuropharm.2019.107804] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 09/23/2019] [Accepted: 09/28/2019] [Indexed: 12/14/2022]
Abstract
Modulation of cannabinoid and neuropeptide Y (NPY) receptors may offer therapeutic benefits for post-traumatic stress disorder (PTSD). In this study, we aimed to investigate the functional interaction between these systems in the basolateral amygdala (BLA) in a rat model of PTSD. Rats were exposed to the shock and reminders model of PTSD and tested for hyper arousal/PTSD- and depression-like behaviors 3 weeks later. Immediately after shock exposure rats were microinjected into the BLA with URB597, a selective inhibitor of fatty acid amide hydrolase (FAAH) that increases the levels of the endocannabinoid anandamide or with the NPY1 receptor agonist Leu31,Pro34-NPY (Leu). Intra-BLA URB597 prevented the shock/reminders-induced PTSD- behaviors (extinction, startle) and depression-behaviors (despair, social impairments). These preventing effects of URB597 on PTSD- and depression-like behaviors were shown to be mostly mediated by cannabinoid CB1 and NPY1 receptors, as they were blocked when URB597 was co-administered with a low dose of a CB1 or NPY1 receptor antagonist. Similarly, intra-BLA Leu prevented development of all the behaviors. Interestingly, a CB1 antagonist prevented the effects of Leu on despair and social behavior, but not the effects on extinction and startle. Moreover, exposure to shock and reminders upregulated CB1 and NPY1 receptors in the BLA and infralimbic prefrontal cortex and this upregulation was restored to normal with intra-BLA URB597 or Leu. The findings suggest that the functional interaction between the eCB and NPY1 systems is complex and provide a rationale for exploring novel therapeutic strategies that target the cannabinoid and NPY systems for stress-related diseases.
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Affiliation(s)
- Neta Maymon
- Department of Psychology, University of Haifa, Haifa, 3498838, Israel
| | | | - Esther L Sabban
- Department of Biochemistry and Molecular Biology, New York Medical College Valhalla, New York, 10595, USA
| | - Irit Akirav
- Department of Psychology, University of Haifa, Haifa, 3498838, Israel.
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8
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Ney LJ, Matthews A, Bruno R, Felmingham KL. Cannabinoid interventions for PTSD: Where to next? Prog Neuropsychopharmacol Biol Psychiatry 2019; 93:124-140. [PMID: 30946942 DOI: 10.1016/j.pnpbp.2019.03.017] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/20/2019] [Accepted: 03/29/2019] [Indexed: 01/18/2023]
Abstract
Cannabinoids are a promising method for pharmacological treatment of post-traumatic stress disorder (PTSD). Despite considerable research devoted to the effect of cannabinoid modulation on PTSD symptomology, there is not a currently agreed way by which the cannabinoid system should be targeted in humans. In this review, we present an overview of recent research identifying neurological pathways by which different cannabinoid-based treatments may exert their effects on PTSD symptomology. We evaluate the strengths and weaknesses of each of these different approaches, including recent challenges presented to favourable options such as fatty acid amide hydrolase (FAAH) inhibitors. This article makes the strengths and challenges of different potential cannabinoid treatments accessible to psychological researchers interested in cannabinoid therapeutics and aims to aid selection of appropriate tools for future clinical trials.
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Affiliation(s)
- Luke J Ney
- School of Psychology, University of Tasmania, Australia.
| | | | | | - Kim L Felmingham
- School of Psychological Sciences, University of Melbourne, Australia
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9
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Hamidkhaniha S, Bashiri H, Omidi A, Hosseini‐Chegeni A, Tavangar SM, Sabouri S, Montazeri H, Sahebgharani M. Effect of pretreatment with intracerebroventricular injection of minocycline on morphine‐induced memory impairment in passive avoidance test: Role of P‐
CREB
and c‐Fos expression in the dorsal hippocampus and basolateral amygdala regions. Clin Exp Pharmacol Physiol 2019; 46:711-722. [DOI: 10.1111/1440-1681.13090] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 02/24/2019] [Accepted: 03/19/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Shokouh Hamidkhaniha
- Department of Pharmacology School of Medicine Tehran University of Medical Sciences Tehran Iran
| | - Hamideh Bashiri
- Neuroscience Research Center, Institute of Neuropharmacology, Department of Physiology and Pharmacology Afzalipour School of Medicine Kerman University of Medical Sciences Kerman Iran
| | - Ameneh Omidi
- Department of Anatomical Sciences Medical Sciences Faculty Tarbiat Modares University Tehran Iran
| | | | - Seyed Mohammad Tavangar
- Department of Pathology Dr. Shariati Hospital Tehran University of Medical Sciences Tehran Iran
| | - Salehe Sabouri
- Department of Pharmacognosy and Pharmaceutical Biotechnology Faculty of Pharmacy Kerman University of Medical Sciences Kerman Iran
| | - Hamed Montazeri
- School of Pharmacy‐ International Campus Iran University of Medical Sciences Tehran Iran
| | - Mousa Sahebgharani
- Department of Pharmacology School of Medicine Tehran University of Medical Sciences Tehran Iran
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10
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Changes in Gene Expression in the Locus Coeruleus-Amygdala Circuitry in Inhibitory Avoidance PTSD Model. Cell Mol Neurobiol 2017; 38:273-280. [PMID: 28889197 DOI: 10.1007/s10571-017-0548-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 09/02/2017] [Indexed: 12/28/2022]
Abstract
The locus coeruleus (LC)-amygdala circuit is implicated in playing a key role in responses to emotionally arousing stimuli and in the manifestation of post-traumatic stress disorder (PTSD). Here, we examined changes in gene expression of a number of important mediators of the LC-amygdala circuitry in the inhibition avoidance model of PTSD. After testing for basal acoustic startle response (ASR), rats were exposed to a severe footshock (1.5 mA for 10 s) in the inhibitory avoidance apparatus. They were given contextual situational reminders every 5 day for 25 days. Controls were treated identically but with the footshock inactivated. Animals were re-tested on second ASR and decapitated 1 h later. The shock group had enhanced hyperarousal and several changes in gene expression compared to controls. In the LC, mRNA levels of norepinephrine (NE) biosynthetic enzymes (TH, DBH), NE transporter (NET), NPY receptors (Y1R, Y2R), and CB1 receptor of endocannabinoid system were elevated. In the basolateral amygdala (BLA), there were marked reductions in gene expression for CB1, and especially Y1R, with rise for corticotropin-releasing hormone (CRH) system (CRH, CRH receptor 1), and no significant changes in the central amygdala. Our results suggest a fast forward mechanism in the LC-amygdala circuitry in the shock group.
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11
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Shoshan N, Akirav I. The effects of cannabinoid receptors activation and glucocorticoid receptors deactivation in the amygdala and hippocampus on the consolidation of a traumatic event. Neurobiol Learn Mem 2017; 144:248-258. [PMID: 28818702 DOI: 10.1016/j.nlm.2017.08.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 08/10/2017] [Accepted: 08/13/2017] [Indexed: 12/26/2022]
Abstract
Ample evidence demonstrates that fear learning contributes significantly to many anxiety pathologies including post-traumatic stress disorder (PTSD). The endocannabinoid (eCB) system may offer therapeutic benefits for PTSD and it is a modulator of the hypothalamic pituitary adrenal (HPA) axis. Here we compared the separated and combined effects of blocking glucocorticoid receptors (GRs) using the GR antagonist RU486 and enhancing CB1r signaling using the CB1/2 receptor agonist WIN55,212-2 in the CA1 and basolateral amygdala (BLA) on the consolidation of traumatic memory. Traumatic memory was formed by exposure to a severe footshock in an inhibitory avoidance apparatus followed by exposure to trauma reminders. Intra-BLA RU486 (10ng/side) and WIN55,212-2 (5μg/side) administered immediately after shock exposure dampened the consolidation of the memory about the traumatic event and attenuated the increase in acoustic startle response in rats exposed to shock and reminders. In the CA1, WIN55,212-2 impaired consolidation and attenuated the increase in acoustic startle response whereas RU486 had no effect. The effects of WIN55,212-2 were found to be mediated by CB1 receptors, but not by GRs. Moreover, post-shock systemic WIN55,212-2 (0.5mg/kg) administration prevented the increase in GRs and CB1 receptor levels in the CA1 and BLA in rats exposed to shock and reminders. The findings suggest that the BLA is a locus of action of cannabinoids and glucocorticoids in modulating consolidation of traumatic memory in a rat model of PTSD. Also, the findings highlight novel targets for the treatment of emotional disorders and PTSD in particular.
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Affiliation(s)
- Noa Shoshan
- Department of Psychology, University of Haifa, Haifa 3498838, Israel
| | - Irit Akirav
- Department of Psychology, University of Haifa, Haifa 3498838, Israel.
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12
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Role of beta-catenin and endocannabinoids in the nucleus accumbens in extinction in rats exposed to shock and reminders. Neuroscience 2017. [DOI: 10.1016/j.neuroscience.2017.06.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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Shoshan N, Segev A, Abush H, Mizrachi Zer-Aviv T, Akirav I. Cannabinoids prevent the differential long-term effects of exposure to severe stress on hippocampal- and amygdala-dependent memory and plasticity. Hippocampus 2017; 27:1093-1109. [DOI: 10.1002/hipo.22755] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 05/22/2017] [Accepted: 06/20/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Noa Shoshan
- Department of Psychology; University of Haifa; Haifa 3498838 Israel
| | - Amir Segev
- Department of Psychology; University of Haifa; Haifa 3498838 Israel
| | - Hila Abush
- Department of Psychology; University of Haifa; Haifa 3498838 Israel
| | | | - Irit Akirav
- Department of Psychology; University of Haifa; Haifa 3498838 Israel
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Sun H, Su R, Zhang X, Wen J, Yao D, Gao X, Zhu Z, Li H. Hippocampal GR- and CB1-mediated mGluR5 differentially produces susceptibility and resilience to acute and chronic mild stress in rats. Neuroscience 2017. [PMID: 28629846 DOI: 10.1016/j.neuroscience.2017.06.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The molecular mechanism of individual response of susceptibility and resilience under psychological stress remains controversial and unclear. The present study aimed to explore the relationship of metabotropic glutamate receptor 5 (mGluR5) with glucocorticoid receptor (GR) or cannabinoid receptor (CB1) and further indicate the molecular mechanism of susceptibility and resilience to acute stress (AS) and chronic mild stress (CMS). Sucrose preference test and open field test were used to evaluate the response of susceptibility and resilience under stress in rats. The mRNA levels and protein expressions of mGluR5, GR, and CB1 were detected. AS induced a 35% reduction in the sucrose intake of rats, and these rats were considered as susceptible to stress; 21% of the rats showed resilience to the stress. Thirty-three percent of rats in the CMS group showed reduced sucrose water intake and were considered susceptible, while 20% of rats were considered resilient. Hippocampal mGluR5 mRNA and protein levels were increased in the susceptible rats. Pharmacological testing showed that GR was positively associated with mGluR5 in susceptible rats in the CMS group, while CB1 was negatively related to mGluR5 in susceptible rats in the AS group. The results suggested that GR and CB1 in the hippocampus might regulate mGluR5 protein and mRNA levels, which might be related to individual responses of susceptibility and resilience under AS and CMS.
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Affiliation(s)
- Hongli Sun
- Department of Neonatology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 86-710061, PR China; Shaanxi Institute of Pediatric Diseases, Affiliated Children's Hospital of Xi'an Jiaotong University, Xi'an 86-710003, PR China
| | - Rujuan Su
- Department of Oncology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 86-710061, PR China
| | - Xiaoxiao Zhang
- College of Life Sciences, Shaanxi Province Biomedicine Key Laboratory, Northwest University, Shaanxi 86-710069, PR China
| | - Jun Wen
- Department of Neonatology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 86-710061, PR China
| | - Dan Yao
- Department of Neonatology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 86-710061, PR China
| | - Xinru Gao
- Department of Neonatology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 86-710061, PR China
| | - Zhongliang Zhu
- College of Life Sciences, Shaanxi Province Biomedicine Key Laboratory, Northwest University, Shaanxi 86-710069, PR China
| | - Hui Li
- Department of Neonatology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 86-710061, PR China; Department of Neonatology, Affiliated Children's Hospital of Xi'an Jiaotong University, Xi'an 86-710061, PR China.
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15
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de Vargas LDS, Gonçalves R, Lara MVS, Costa-Ferro ZSM, Salamoni SD, Domingues MF, Piovesan AR, de Assis DR, Vinade L, Corrado AP, Alves-Do-Prado W, Correia-de-Sá P, da Costa JC, Izquierdo I, Dal Belo CA, Mello-Carpes PB. Methylprednisolone as a memory enhancer in rats: Effects on aversive memory, long-term potentiation and calcium influx. Brain Res 2017; 1670:44-51. [PMID: 28606783 DOI: 10.1016/j.brainres.2017.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 06/03/2017] [Accepted: 06/05/2017] [Indexed: 12/16/2022]
Abstract
It is well recognized that stress or glucocorticoids hormones treatment can modulate memory performance in both directions, either impairing or enhancing it. Despite the high number of studies aiming at explaining the effects of glucocorticoids on memory, this has not yet been completely elucidated. Here, we demonstrate that a low daily dose of methylprednisolone (MP, 5mg/kg, i.p.) administered for 10-days favors aversive memory persistence in adult rats, without any effect on the exploring behavior, locomotor activity, anxiety levels and pain perception. Enhanced performance on the inhibitory avoidance task was correlated with long-term potentiation (LTP), a phenomenon that was strengthen in hippocampal slices of rats injected with MP (5mg/kg) during 10days. Additionally, in vitro incubation with MP (30-300µM) concentration-dependently increased intracellular [Ca2+]i in cultured hippocampal neurons depolarized by KCl (35mM). In conclusion, a low daily dose of MP for 10days may promote aversive memory persistence in rats.
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Affiliation(s)
| | - Rithiele Gonçalves
- Physiology Research Group, Federal University of Pampa, Uruguaiana, RS, Brazil
| | | | - Zaquer S M Costa-Ferro
- Laboratory of Neuroscience, Brain Institute of Rio Grande do Sul, InsCer, PUCRS, Porto Alegre, RS, Brazil
| | - Simone Denise Salamoni
- Laboratory of Neuroscience, Brain Institute of Rio Grande do Sul, InsCer, PUCRS, Porto Alegre, RS, Brazil
| | - Michelle Flores Domingues
- Graduate Program in Cell and Molecular Biology, Center of Biotechnology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Laboratory of Neurotoxins, Laneurotox, Brain Institute of Rio Grande do Sul, InsCer, PUCRS, Porto Alegre, RS, Brazil
| | - Angela Regina Piovesan
- Graduate Program in Cell and Molecular Biology, Center of Biotechnology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Laboratory of Neurotoxins, Laneurotox, Brain Institute of Rio Grande do Sul, InsCer, PUCRS, Porto Alegre, RS, Brazil
| | - Dênis Reis de Assis
- Laboratory of Neuroscience, Brain Institute of Rio Grande do Sul, InsCer, PUCRS, Porto Alegre, RS, Brazil
| | - Lucia Vinade
- Laboratory of Neurobiology and Toxinology, Lanetox, Federal University of Pampa, São Gabriel, RS, Brazil
| | - Alexandre P Corrado
- Department of Pharmacology, FMRP, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Wilson Alves-Do-Prado
- Department of Pharmacology and Therapeutics, State University of Maringa, PR, Brazil
| | - Paulo Correia-de-Sá
- Laboratory of Pharmacology and Neurobiology, Center for Drug Discovery and Innovative Medicines (MedInUP), Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Portugal
| | - Jaderson Costa da Costa
- Laboratory of Neuroscience, Brain Institute of Rio Grande do Sul, InsCer, PUCRS, Porto Alegre, RS, Brazil
| | - Ivan Izquierdo
- Centre of Memory, Brain Institute of Rio Grande do Sul, InsCer, PUCRS, Porto Alegre, RS, Brazil
| | - Cháriston A Dal Belo
- Laboratory of Neurobiology and Toxinology, Lanetox, Federal University of Pampa, São Gabriel, RS, Brazil
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16
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Ashabi G, Sadat-Shirazi MS, Khalifeh S, Elhampour L, Zarrindast MR. NMDA receptor adjusted co-administration of ecstasy and cannabinoid receptor-1 agonist in the amygdala via stimulation of BDNF/Trk-B/CREB pathway in adult male rats. Brain Res Bull 2017; 130:221-230. [DOI: 10.1016/j.brainresbull.2017.01.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 01/24/2017] [Accepted: 01/27/2017] [Indexed: 12/29/2022]
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17
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Cannabinoids and post-traumatic stress disorder: clinical and preclinical evidence for treatment and prevention. Behav Pharmacol 2016; 27:561-9. [DOI: 10.1097/fbp.0000000000000253] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Kennedy BC, Dimova JG, Dakoji S, Yuan LL, Gewirtz JC, Tran PV. Deletion of novel protein TMEM35 alters stress-related functions and impairs long-term memory in mice. Am J Physiol Regul Integr Comp Physiol 2016; 311:R166-78. [PMID: 27170659 DOI: 10.1152/ajpregu.00066.2016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 05/04/2016] [Indexed: 12/20/2022]
Abstract
The mounting of appropriate emotional and neuroendocrine responses to environmental stressors critically depends on the hypothalamic-pituitary-adrenal (HPA) axis and associated limbic circuitry. Although its function is currently unknown, the highly evolutionarily conserved transmembrane protein 35 (TMEM35) is prominently expressed in HPA circuitry and limbic areas, including the hippocampus and amygdala. To investigate the possible involvement of this protein in neuroendocrine function, we generated tmem35 knockout (KO) mice to characterize the endocrine, behavioral, electrophysiological, and proteomic alterations caused by deletion of the tmem35 gene. While capable of mounting a normal corticosterone response to restraint stress, KO mice showed elevated basal corticosterone accompanied by increased anxiety-like behavior. The KO mice also displayed impairment of hippocampus-dependent fear and spatial memories. Given the intact memory acquisition but a deficit in memory retention in the KO mice, TMEM35 is likely required for long-term memory consolidation. This conclusion is further supported by a loss of long-term potentiation in the Schaffer collateral-CA1 pathway in the KO mice. To identify putative molecular pathways underlying alterations in plasticity, proteomic analysis of synaptosomal proteins revealed lower levels of postsynaptic molecules important for synaptic plasticity in the KO hippocampus, including PSD95 and N-methyl-d-aspartate receptors. Pathway analysis (Ingenuity Pathway Analysis) of differentially expressed synaptic proteins in tmem35 KO hippocampus implicated molecular networks associated with specific cellular and behavioral functions, including decreased long-term potentiation, and increased startle reactivity and locomotion. Collectively, these data suggest that TMEM35 is a novel factor required for normal activity of the HPA axis and limbic circuitry.
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Affiliation(s)
- Bruce C Kennedy
- Department of Neuroscience, University of Minnesota, Minneapolis, Minnesota; Center for Neurobehavioral Development, University of Minnesota, Minneapolis, Minnesota
| | - Jiva G Dimova
- Department of Psychology, University of Minnesota, Minneapolis, Minnesota
| | - Srikanth Dakoji
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota; and
| | - Li-Lian Yuan
- Department of Neuroscience, University of Minnesota, Minneapolis, Minnesota
| | - Jonathan C Gewirtz
- Department of Psychology, University of Minnesota, Minneapolis, Minnesota; Department of Neuroscience, University of Minnesota, Minneapolis, Minnesota; Center for Neurobehavioral Development, University of Minnesota, Minneapolis, Minnesota
| | - Phu V Tran
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota; and Center for Neurobehavioral Development, University of Minnesota, Minneapolis, Minnesota
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