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Tong XY, Norenberg MD, Paidas MJ, Shamaladevi N, Salgueiro L, Jaszberenyi M, John B, Hussain H, El Hiba O, Abdeljalil EG, Bilal EM, Natarajan S, Romaguera R, Papayan S, Carden AK, Ramamoorthy R, Elumalai N, Schally AV, Nithura J, Patrizio R, Jayakumar AR. Mechanism of Alzheimer Type II Astrocyte Development in Hepatic Encephalopathy. Neurochem Int 2024:105866. [PMID: 39369794 DOI: 10.1016/j.neuint.2024.105866] [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: 05/14/2024] [Revised: 09/19/2024] [Accepted: 09/22/2024] [Indexed: 10/08/2024]
Abstract
Type C hepatic encephalopathy (Type C HE) is a major and complex neurological condition that occurs following chronic liver failure. The molecular basis of Type C HE remains elusive. Type C HE is characterized by mental confusion, cognitive and motor disturbances. The presence of Alzheimer type II astrocytes (AT2A) is the key histopathological finding observed in Type C HE. However, nothing is currently known regarding AT2A development and its involvement in cognitive, and motor deficits in Type C HE. We, therefore, examined in rats the mechanisms by which liver failure contributes to the progression of AT2A, and its role in the development of cognitive and motor deficits in thioacetamide (TAA) model of Type C HE. We and others earlier reported increased oxidative/nitrosative stress (ONS), JNK1/2, and cMyc activation in ammonia-treated astrocyte cultures, as well as in brains from chronic liver failure. We now found increased levels of astrocytic glia maturation factor (GMF, a factor strongly implicated in neuroinflammation), as well as various inflammatory factors (IL-1β, TNF-α, IL-6, MMP-3, COX2, CXCL1, and PGE2), and reduced levels of GFAP and increased levels of aggregated nuclear protein Lamin A/C in rat brain cortex post-chronic liver failure. We also found increased levels of GMF and inflammatory factors (MMP-3, COX2, CXCL1, and PGE2) in astrocytes post-ammonia treatment in vitro. Additionally, pharmacological inhibition of upstream signaling of GMF (ONS, JNK1/2, and cMyc) or GMF inhibitors W-7 and trifluoperazine significantly reduced the levels of inflammatory factors, the number of AT2A cells, as well as the cognitive and motor deficits in TAA-treated rats. Increased levels of GMF were also identified in human post-mortem brain sections. These findings strongly suggest that increased levels of astrocytic GMF due to elevated levels of ONS, JNK1/2, and cMyc and the subsequent inflammation contribute to the development of AT2A and the consequent cognitive, and motor deficits in chronic liver failure.
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Affiliation(s)
- Xiao Y Tong
- Departments of Pathology, University of Miami School of Medicine, Miami FL, USA
| | - Michael D Norenberg
- Departments of Pathology, University of Miami School of Medicine, Miami FL, USA
| | - Michael J Paidas
- Departments of Obstetrics, Gynecology and Reproductive Sciences, University of Miami School of Medicine, Miami FL, USA; Departments of Biochemistry & Molecular Biology, University of Miami School of Medicine, Miami FL, USA
| | | | - Luis Salgueiro
- General Medical Research, R&D Services, Department of Veterans Affairs, Miami FL, USA
| | - Miklos Jaszberenyi
- General Medical Research, R&D Services, Department of Veterans Affairs, Miami FL, USA; Department of Pathophysiology, Faculty of Medicine, University of Szeged, Hungary
| | - Binu John
- General Medical Research, R&D Services, Department of Veterans Affairs, Miami FL, USA
| | - Hussain Hussain
- Larkin Community Hospital, Department of Internal Medicine and Infectious Disease, Miami, FL, USA
| | - Omar El Hiba
- Laboratory of Anthropogenic, Biotechnology, and Health, Nutritional Physiopathologies, Neuroscience and Toxicology Team, Faculty of Sciences, Chouaib Doukkali University, Av Des facultés, 24000, El Jadida. Morocco; The Hassan First University of Settat, Higher Institute of Health Sciences, Laboratory of Health Sciences and Technology, Morocco
| | - El Got Abdeljalil
- Laboratory of Anthropogenic, Biotechnology, and Health, Nutritional Physiopathologies, Neuroscience and Toxicology Team, Faculty of Sciences, Chouaib Doukkali University, Av Des facultés, 24000, El Jadida. Morocco; The Hassan First University of Settat, Higher Institute of Health Sciences, Laboratory of Health Sciences and Technology, Morocco
| | - El-Mansoury Bilal
- Laboratory of Anthropogenic, Biotechnology, and Health, Nutritional Physiopathologies, Neuroscience and Toxicology Team, Faculty of Sciences, Chouaib Doukkali University, Av Des facultés, 24000, El Jadida. Morocco; The Hassan First University of Settat, Higher Institute of Health Sciences, Laboratory of Health Sciences and Technology, Morocco
| | - Sampath Natarajan
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Tamil Nadu, India
| | - Rita Romaguera
- Pathology and Laboratory Medicine, Department of Veterans Affairs, Miami FL, 33125, USA
| | - Stanislav Papayan
- Pathology and Laboratory Medicine, Department of Veterans Affairs, Miami FL, 33125, USA
| | - Arianna K Carden
- Departments of Obstetrics, Gynecology and Reproductive Sciences, University of Miami School of Medicine, Miami FL, USA
| | - Rajalakshmi Ramamoorthy
- Departments of Obstetrics, Gynecology and Reproductive Sciences, University of Miami School of Medicine, Miami FL, USA
| | - Nila Elumalai
- Departments of Obstetrics, Gynecology and Reproductive Sciences, University of Miami School of Medicine, Miami FL, USA
| | - Andrew V Schally
- Endocrine, Polypeptide, and Cancer Institute, Department of Veterans Affairs, Miami FL, 33125, USA
| | | | - Rebecca Patrizio
- Departments of Obstetrics, Gynecology and Reproductive Sciences, University of Miami School of Medicine, Miami FL, USA
| | - Arumugam R Jayakumar
- Departments of Obstetrics, Gynecology and Reproductive Sciences, University of Miami School of Medicine, Miami FL, USA; General Medical Research, R&D Services, Department of Veterans Affairs, Miami FL, USA; Neuropathology Section, Veterans Affairs Medical Center, Miami FL, USA; R&D Services and South Florida VA Foundation for Research and Education Inc, Veterans Affairs Medical Center, Miami FL, USA.
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Wei R, Zong F, Dong J, Zhao W, Zhang F, Wang W, Zhao S, Wang Z, Zhang F, Zhang HT. Identification of Phosphodiesterase-7A (PDE7A) as a Novel Target for Reducing Ethanol Consumption in Mice. Int J Neuropsychopharmacol 2024; 27:pyae032. [PMID: 39099166 PMCID: PMC11348009 DOI: 10.1093/ijnp/pyae032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 07/29/2024] [Indexed: 08/06/2024] Open
Abstract
BACKGROUND Ethanol elicits a rapid stimulatory effect and a subsequent, prolonged sedative response, which are potential predictors of EtOH consumption by decreasing adenosine signaling; this phenomenon also reflects the obvious sex difference. cAMP (cyclic Adenosine Monophosphate)-PKA (Protein Kinase A) signaling pathway modulation can influence the stimulatory and sedative effects induced by EtOH in mice. This study's objective is to clarify the role of phosphodiesterase (PDE) in mediating the observed sex differences in EtOH responsiveness between male and female animals. METHODS EtOH was administered i.p. for 7 days to identify the changes in PDE isoforms in response to EtOH treatment. Additionally, EtOH consumption and preference of male and female C57BL/6J mice were assessed using the drinking-in-the-dark and 2-bottle choice tests. Further, pharmacological inhibition of PDE7A heterozygote knockout mice was performed to investigate its effects on EtOH-induced stimulation and sedation in both male and female mice. Finally, Western blotting analysis was performed to evaluate the alterations in cAMP-PKA/Epac2 pathways. RESULTS EtOH administration resulted in an immediate upregulation in PDE7A expression in female mice, indicating a strong association between PDE7A and EtOH stimulation. Through the pharmacological inhibition of PDE7A KD mice, we have demonstrated for the first time, to our knowledge, that PDE7A selectively attenuates EtOH responsiveness and consumption exclusively in female mice, whichmay be associated with the cAMP-PKA/Epac2 pathway and downstream phosphorylation of CREB and ERK1/2. CONCLUSIONS Inhibition or knockdown of PDE7A attenuates EtOH responsivenessand consumption exclusively in female mice, which is associated with alterations in the cAMP-PKA/Epac2 signaling pathways, thereby highlighting its potential as a novel therapeutic target for alcohol use disorder.
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Affiliation(s)
- Ran Wei
- Department of Pharmacology, Qingdao University School of Pharmacy, Qingdao, China
- Weifang Chinese Medical Hospital, Shandong Second Medical University, Weifang, China
| | - Fangjiao Zong
- Department of Pharmacology, Qingdao University School of Pharmacy, Qingdao, China
| | - Jiahao Dong
- Department of Pharmacology, Qingdao University School of Pharmacy, Qingdao, China
- Weifang People’s Hospital, Shandong Second Medical University, Weifang, China
| | - Wei Zhao
- Department of Pharmacology, Qingdao University School of Pharmacy, Qingdao, China
| | - Fangfang Zhang
- Institude of Pharmacology, Shandong First Medical University and Shandong Academy of Medical Sciences, Tai’an, China
| | - Wei Wang
- Institude of Pharmacology, Shandong First Medical University and Shandong Academy of Medical Sciences, Tai’an, China
| | - Shuang Zhao
- Department of Pharmacology, Qingdao University School of Pharmacy, Qingdao, China
| | - Ziqi Wang
- Department of Pharmacology, Qingdao University School of Pharmacy, Qingdao, China
| | - Fang Zhang
- Department of Pharmacology, Qingdao University School of Pharmacy, Qingdao, China
| | - Han-Ting Zhang
- Department of Pharmacology, Qingdao University School of Pharmacy, Qingdao, China
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Clabough EBD, Aspili C, Fussy WS, Ingersoll JD, Kislyakov A, Li ES, Su MJ, Wiles DB, Watson TE, Willy AJ, Thomas Vinyard H, Mollica Iii PJ, Taylor JV, Smith CW, Roark DA, Tabrani ZP, Thomas HL, Shin M, Venton BJ, Hayes D, Sipe CW. Huntingtin Plays a Role in the Physiological Response to Ethanol in Drosophila. J Huntingtons Dis 2023; 12:241-252. [PMID: 37661891 DOI: 10.3233/jhd-230581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
BACKGROUND Huntingtin (htt) protein is an essential regulator of nervous system function through its various neuroprotective and pro-survival functions, and loss of wild-type htt function is implicated in the etiology of Huntington's disease. While its pathological role is typically understood as a toxic gain-of-function, some neuronal phenotypes also result from htt loss. Therefore, it is important to understand possible roles for htt in other physiological circumstances. OBJECTIVE To elucidate the role of htt in the context of ethanol exposure, we investigated how loss of htt impacts behavioral and physiological responses to ethanol in Drosophila. METHODS We tested flies lacking htt for ethanol sensitivity and tolerance, preference for ethanol using capillary feeder assays, and recovery of mobility after intoxication. Levels of dopamine neurotransmitter and numbers of dopaminergic cells in brains lacking dhtt were also measured. RESULTS We found that dhtt-null flies are both less sensitive and more tolerant to ethanol exposure in adulthood. Moreover, flies lacking dhtt are more averse to alcohol than controls, and they recover mobility faster following acute ethanol intoxication. We showed that dhtt mediates these effects at least in part through the dopaminergic system, as dhtt is required to maintain normal levels of dopamine in the brain and normal numbers of dopaminergic cells in the adult protocerebrum. CONCLUSIONS Our results demonstrate that htt regulates the physiological response to ethanol and indicate a novel neuroprotective role for htt in the dopaminergic system, raising the possibility that it may be involved more generally in the response to toxic stimuli.
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Affiliation(s)
- Erin B D Clabough
- Department of Psychology, University of Virginia, Charlottesville, VA, USA
- Program in Fundamental Neuroscience, University of Virginia, Charlottesville, VA, USA
| | - Christia Aspili
- Department of Psychology, University of Virginia, Charlottesville, VA, USA
| | - William S Fussy
- Department of Biology, Hampden-Sydney College, Hampden-Sydney, VA, USA
| | - James D Ingersoll
- Department of Biology, Hampden-Sydney College, Hampden-Sydney, VA, USA
| | - Amy Kislyakov
- Department of Psychology, University of Virginia, Charlottesville, VA, USA
| | - Elizabeth S Li
- Department of Psychology, University of Virginia, Charlottesville, VA, USA
| | - Meng-Jiuan Su
- Department of Psychology, University of Virginia, Charlottesville, VA, USA
| | - Dustin B Wiles
- Department of Biology, Hampden-Sydney College, Hampden-Sydney, VA, USA
| | - Thomas E Watson
- Department of Biology, Hampden-Sydney College, Hampden-Sydney, VA, USA
| | - Aaron J Willy
- Department of Biology, Hampden-Sydney College, Hampden-Sydney, VA, USA
| | - H Thomas Vinyard
- Department of Biology, Hampden-Sydney College, Hampden-Sydney, VA, USA
| | | | - James V Taylor
- Department of Biology, Hampden-Sydney College, Hampden-Sydney, VA, USA
| | - Cody W Smith
- Department of Biology, Hampden-Sydney College, Hampden-Sydney, VA, USA
| | - Dallas A Roark
- Department of Biology, Hampden-Sydney College, Hampden-Sydney, VA, USA
| | - Zachary P Tabrani
- Department of Biology, Hampden-Sydney College, Hampden-Sydney, VA, USA
| | - Harris L Thomas
- Department of Biology, Hampden-Sydney College, Hampden-Sydney, VA, USA
| | - Mimi Shin
- Department of Chemistry, University of Virginia, Charlottesville, VA, USA
| | - B Jill Venton
- Program in Fundamental Neuroscience, University of Virginia, Charlottesville, VA, USA
- Department of Chemistry, University of Virginia, Charlottesville, VA, USA
| | - David Hayes
- Department of Biology, Shepherd University, Shepherdstown, WV, USA
- Department of Biology, Kansas State University, Manhattan, KS, USA
| | - Conor W Sipe
- Department of Biology, Shepherd University, Shepherdstown, WV, USA
- Department of Biology, University of Virginia, Charlottesville, VA, USA
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Jung WY, Kim SG, Kim JH, Lee JS. Calcium/calmodulin-dependent protein kinase IV gene polymorphisms in Korean alcohol-dependent patients. Prog Neuropsychopharmacol Biol Psychiatry 2017; 79:386-391. [PMID: 28734942 DOI: 10.1016/j.pnpbp.2017.07.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 07/14/2017] [Accepted: 07/18/2017] [Indexed: 11/29/2022]
Abstract
INTRODUCTION A relationship between alcohol dependence (AD) and calcium/calmodulin-dependent protein kinase IV (CAMKIV) has been reported in a whole genome study of Korean AD patients. The purpose of the present study is to compare the frequency of CAMKIV genotypes and alleles between AD and control subjects in Korea. METHODS The present study includes 281 AD patients and 139 control subjects. Seven single nucleotide polymorphism of CAMKIV gene known to show significant separation ratio in Asians were searched in SNP database and previous studies related to CAMKIV gene. Polymerase chain reaction and restriction fragment length polymorphism techniques were used to analyze genotype of CAMKIV gene SNPs. RESULTS Major TT genotype and T allele frequencies of rs 25917 in AD patients were significantly higher than those of control subjects (genotype frequency, p=0.002; allele frequency, p=0.001). Major CC genotype and C allele frequencies of rs 117590959 in AD patients were also significantly higher than those of control subjects (genotype frequency, p<0.001; allele frequency, p=0.001). Major genotypes of rs25917 (p=0.002, odd ratio: 3.13, 95% CI: 1.54-6.38) and rs11790959 (p=0.002, odd ratio: 3.22, 95% CI: 1.52-6.81) showed significantly higher odds ratios associated with AD than minor genotypes in logistic regression. DISCUSSION These results suggest that CAMKIV might be a candidate AD gene. Further research is needed to determine the precise relationship between CAMKIV and AD and the function of each SNP.
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Affiliation(s)
- Woo-Young Jung
- Department of Psychiatry, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Sung-Gon Kim
- Department of Psychiatry, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea; Department of Psychiatry, School of Medicine, Pusan National University, Yangsan, Republic of Korea.
| | - Ji-Hoon Kim
- Department of Psychiatry, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea; Department of Psychiatry, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Jin-Seong Lee
- Department of Psychiatry, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea; Department of Psychiatry, School of Medicine, Pusan National University, Yangsan, Republic of Korea
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Baliño P, Ledesma JC, Aragon CMG. Role of phosphodiesterase-4 on ethanol elicited locomotion and narcosis. Neuropharmacology 2015; 101:271-8. [PMID: 26449868 DOI: 10.1016/j.neuropharm.2015.10.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 09/30/2015] [Accepted: 10/01/2015] [Indexed: 12/27/2022]
Abstract
The cAMP signaling pathway has emerged as an important modulator of the pharmacological effects of ethanol. In this respect, the cAMP-dependent protein kinase has been shown to play an important role in the modulation of several ethanol-induced behavioral actions. Cellular levels of cAMP are maintained by the activity of adenylyl cyclases and phosphodiesterases. In the present work we have focused on ascertaining the role of PDE4 in mediating the neurobehavioral effects of ethanol. For this purpose, we have used the selective PDE4 inhibitor Ro 20-1724. This compound has been proven to enhance cellular cAMP response by PDE4 blockade and can be administered systemically. Swiss mice were injected intraperitoneally (i.p.) with Ro 20-1724 (0-5 mg/kg; i.p.) at different time intervals before ethanol (0-4 g/kg; i.p.) administration. Immediately after the ethanol injection, locomotor activity, loss of righting reflex, PKA footprint and enzymatic activity were assessed. Pretreatment with Ro 20-1724 increased ethanol-induced locomotor stimulation in a dose-dependent manner. Doses that increased locomotor stimulation did not modify basal locomotion or the suppression of motor activity produced by high doses of this alcohol. Ro 20-1724 did not alter the locomotor activation produced by amphetamine or cocaine. The time of loss of righting reflex evoked by ethanol was increased after pretreatment with Ro 20-1724. This effect was selective for the narcotic effects of ethanol since Ro 20-1724 did not affect pentobarbital-induced narcotic effects. Moreover, Ro 20-1724 administration increased the PKA footprint and enzymatic activity response elicited by ethanol. These data provide further evidence of the key role of the cAMP signaling pathway in the central effects of ethanol.
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Affiliation(s)
- Pablo Baliño
- Área de Psicobiología, Universtitat Jaume I, Avda. Sos Baynat s/n, 12071, Castellón, Spain.
| | - Juan Carlos Ledesma
- Área de Psicobiología, Universtitat Jaume I, Avda. Sos Baynat s/n, 12071, Castellón, Spain.
| | - Carlos M G Aragon
- Área de Psicobiología, Universtitat Jaume I, Avda. Sos Baynat s/n, 12071, Castellón, Spain.
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