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Li L, Su Y, Wang S, Wang C, Ruan N, Hu Z, Cheng X, Chen J, Yuan K, Li P, Fan P. Neonatal di-(2-ethylhexyl)phthalate exposure induces permanent alterations in secretory CRH neuron characteristics in the hypothalamus paraventricular region of adult male rats. Exp Neurol 2024; 372:114616. [PMID: 38007208 DOI: 10.1016/j.expneurol.2023.114616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 10/31/2023] [Accepted: 11/19/2023] [Indexed: 11/27/2023]
Abstract
Corticotrophin-releasing hormone (CRH) neurons in the hypothalamic paraventricular nucleus (PVN) play a critical role in the modulation of the hypothalamic-pituitary-adrenal (HPA) axis. Early-life exposure to di-(2-ethylhexyl) phthalate (DEHP) has been associated with an increased risk of developing psychiatric disorders in adulthood. The present work was designed to explore the impact of neonatal exposure to DEHP on adult PVN CRH neuronal activity. DEHP or vehicle was given to male rat pups from PND16 to PND22. Then, anxiety-like behaviors, serum corticosterone and testosterone, immunohistochemistry, western blotting, fluorescence in situ hybridization and acute ex vivo slice electrophysiological recordings were used to evaluate the influence of DEHP on adult PVN secretory CRH neurons. Neonatal DEHP-exposed rats exhibited enhanced anxiety-like behaviors in adults, with an increase in CORT. Secretory CRH neurons showed higher spontaneous firing activity but could be inhibited by GABAAR blockers. CRH neurons displayed fewer firing spikes, prolonged first-spike latency, depolarizing shifts in GABA reversal potential and strengthened GABAergic inputs, as indicated by increases in the frequency and amplitude of sIPSCs. Enhancement of GABAergic transmission was accompanied by upregulated expression of GAD67 and downregulated expression of GABABR1, KCC2 and GAT1. These findings suggest that neonatal exposure to DEHP permanently altered the characteristics of secretory CRH neurons in the PVN, which may contribute to the development of psychiatric disorders later in life.
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Affiliation(s)
- Li Li
- Key Laboratory of Anesthesiology of Zhejiang Province, Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Ying Su
- Key Laboratory of Anesthesiology of Zhejiang Province, Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Siyuan Wang
- Key Laboratory of Anesthesiology of Zhejiang Province, Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Brain Injury Center, Department of Neurosurgery, RenJi Hospital, Shanghai JiaoTong University, School of Medicine, Shanghai 200127, China
| | - Chengyu Wang
- Key Laboratory of Anesthesiology of Zhejiang Province, Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Naqi Ruan
- Key Laboratory of Anesthesiology of Zhejiang Province, Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Zhiyan Hu
- Key Laboratory of Anesthesiology of Zhejiang Province, Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Xin Cheng
- Key Laboratory of Anesthesiology of Zhejiang Province, Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Jiajia Chen
- Key Laboratory of Anesthesiology of Zhejiang Province, Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Kaiming Yuan
- Key Laboratory of Anesthesiology of Zhejiang Province, Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China.
| | - Peijun Li
- Department of Neurology, Institute of Geriatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China.
| | - Pei Fan
- Zhejiang Provincial Key Laboratory of Orthopedics, Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China.
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McArdle CJ, Arnone AA, Heaney CF, Raab-Graham KF. A paradoxical switch: the implications of excitatory GABAergic signaling in neurological disorders. Front Psychiatry 2024; 14:1296527. [PMID: 38268565 PMCID: PMC10805837 DOI: 10.3389/fpsyt.2023.1296527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 12/04/2023] [Indexed: 01/26/2024] Open
Abstract
Gamma-aminobutyric acid (GABA) is the primary inhibitory neurotransmitter in the central nervous system. In the mature brain, inhibitory GABAergic signaling is critical in maintaining neuronal homeostasis and vital human behaviors such as cognition, emotion, and motivation. While classically known to inhibit neuronal function under physiological conditions, previous research indicates a paradoxical switch from inhibitory to excitatory GABAergic signaling that is implicated in several neurological disorders. Various mechanisms have been proposed to contribute to the excitatory switch such as chloride ion dyshomeostasis, alterations in inhibitory receptor expression, and modifications in GABAergic synaptic plasticity. Of note, the hypothesized mechanisms underlying excitatory GABAergic signaling are highlighted in a number of neurodevelopmental, substance use, stress, and neurodegenerative disorders. Herein, we present an updated review discussing the presence of excitatory GABAergic signaling in various neurological disorders, and their potential contributions towards disease pathology.
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Affiliation(s)
- Colin J. McArdle
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Alana A. Arnone
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, NC, United States
- Department of General Surgery, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Chelcie F. Heaney
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Kimberly F. Raab-Graham
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, NC, United States
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Li J, Zhang H, Ouyang H, Xu W, Sun Y, Zhong Y, Wang L, Huang J, Chen J, Li M, Zhu W, Liu Y, Liu R. Pueraria thomsonii Radix Water Extract Alleviate Type 2 Diabetes Mellitus in db/db Mice through Comprehensive Regulation of Metabolism and Gut Microbiota. Molecules 2023; 28:7471. [PMID: 38005193 PMCID: PMC10673130 DOI: 10.3390/molecules28227471] [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] [Received: 06/16/2023] [Revised: 10/01/2023] [Accepted: 10/19/2023] [Indexed: 11/26/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is an increasingly prevalent and serious health problem. Its onset is typically associated with metabolic disorders and disturbances in the gut microbiota. Previous studies have reported the anti-T2DM effects of Pueraria thomsonii Radix as a functional food. However, the mechanism of action is still unknown. In this study, rich polyphenols and polysaccharides from Pueraria Thomsonii Radix water extract (PTR) were quantitatively determined, and then the effects of PTR on db/db mice were evaluated by pharmacology, metabolomics, and 16S rRNA gene sequencing. The results showed that PTR could alleviate pancreatic tissue damage, significantly decrease fasting blood glucose (FBG), fasting serum insulin (FINS), homeostasis model assessment insulin resistance (HOMA-IR), urinary glucose (UGLU), and urinary albumin/creatinine ratio (UACR). Metabolomics showed that the Diabetes Control (DM) group produced 109 differential metabolites, of which 74 could be regulated by PTR. In addition, 16S rRNA sequencing was performed in fecal samples and results showed that PTR could reduce the Firmicutes/Bacteroidetes(F/B) ratio and regulate three beneficial bacteria and one harmful bacterium. In conclusion, the results showed that PTR could ameliorate the T2DM symptoms, metabolic disorder, and gut microbiota imbalance of db/db mice, and it was superior to metformin in some aspects. We suggested for the first time that γ-aminobutyric acid (GABA) may be involved in the regulation of the microbiota-gut-brain axis (MGB) and thus affects the metabolic disorders associated with T2DM. This study will provide a scientific basis for the development of functional food with PTR.
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Affiliation(s)
- Jiarong Li
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330002, China; (J.L.); (H.O.); (W.X.); (Y.Z.); (L.W.); (J.H.); (J.C.); (M.L.)
| | - Hua Zhang
- Department of Food Nutrition and Safety, College of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330004, China;
| | - Hui Ouyang
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330002, China; (J.L.); (H.O.); (W.X.); (Y.Z.); (L.W.); (J.H.); (J.C.); (M.L.)
- State Key Laboratory of Innovative Drug and Efficient Energy-Saving Pharmaceutical Equipment, Nanchang 330006, China
| | - Weixin Xu
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330002, China; (J.L.); (H.O.); (W.X.); (Y.Z.); (L.W.); (J.H.); (J.C.); (M.L.)
| | - Yong Sun
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China;
| | - Youbao Zhong
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330002, China; (J.L.); (H.O.); (W.X.); (Y.Z.); (L.W.); (J.H.); (J.C.); (M.L.)
| | - Lifang Wang
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330002, China; (J.L.); (H.O.); (W.X.); (Y.Z.); (L.W.); (J.H.); (J.C.); (M.L.)
| | - Jiaxing Huang
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330002, China; (J.L.); (H.O.); (W.X.); (Y.Z.); (L.W.); (J.H.); (J.C.); (M.L.)
| | - Junchang Chen
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330002, China; (J.L.); (H.O.); (W.X.); (Y.Z.); (L.W.); (J.H.); (J.C.); (M.L.)
| | - Mingyao Li
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330002, China; (J.L.); (H.O.); (W.X.); (Y.Z.); (L.W.); (J.H.); (J.C.); (M.L.)
| | - Weifeng Zhu
- Key Laboratory of Modern Preparation of Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang 330002, China;
| | - Yuhui Liu
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330002, China; (J.L.); (H.O.); (W.X.); (Y.Z.); (L.W.); (J.H.); (J.C.); (M.L.)
| | - Ronghua Liu
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330002, China; (J.L.); (H.O.); (W.X.); (Y.Z.); (L.W.); (J.H.); (J.C.); (M.L.)
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Tabassum S, Misrani A, Huang HX, Zhang ZY, Li QW, Long C. Resveratrol Attenuates Chronic Unpredictable Mild Stress-Induced Alterations in the SIRT1/PGC1α/SIRT3 Pathway and Associated Mitochondrial Dysfunction in Mice. Mol Neurobiol 2023; 60:5102-5116. [PMID: 37256428 DOI: 10.1007/s12035-023-03395-8] [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] [Received: 11/18/2022] [Accepted: 05/18/2023] [Indexed: 06/01/2023]
Abstract
Environmental challenges, specifically chronic stress, have long been associated with neuropsychiatric disorders, including anxiety and depression. Sirtuin-1 (SIRT1) is a NAD+-dependent deacetylase that is widely distributed in the cortex and is involved in stress responses and neuropsychiatric disorders. Nevertheless, how chronic stress modulates the SIRT1 pathway and associated signaling remains unclear. In this study, we first explored the impact of chronic unpredictable mild stress (CUMS) on the SIRT1/PGC1α/SIRT3 pathway, on GABAergic mechanisms, and on mitophagy, autophagy and apoptosis in mice. We also asked whether activation of SIRT1 by resveratrol (RSV) can attenuate CUMS-induced molecular and behavioral alterations. Two-month-old C57/BL6J mice were subjected to three weeks of CUMS and one week of RSV treatment (30 mg/kg; i.p.) during the third week of CUMS. CUMS caused downregulation of the SIRT1/PGC1α/SIRT3 pathway leading to impaired mitochondrial morphology and function. CUMS also resulted in a reduction in numbers of parvalbumin-positive interneurons and increased oxidative stress leading to reduced expression of autophagy- and mitophagy-related proteins. Strikingly, activation of SIRT1 by RSV ameliorated expression of SIRT1/PGC1α/SIRT3, and also improved mitochondrial function, GABAergic mechanisms, mitophagy, autophagy and apoptosis. RSV also rescued CUMS-induced anxiety-like and depressive-like behavior in mice. Our results raise the compelling possibility that RSV treatment might be a viable therapeutic method of blocking stress-induced behavioral alterations.
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Affiliation(s)
- Sidra Tabassum
- South China Normal University-Panyu Central Hospital Joint Laboratory of Translational Medical Research, Panyu Central Hospital, Guangzhou, 511400, China
- School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Afzal Misrani
- South China Normal University-Panyu Central Hospital Joint Laboratory of Translational Medical Research, Panyu Central Hospital, Guangzhou, 511400, China
- School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Hui-Xian Huang
- South China Normal University-Panyu Central Hospital Joint Laboratory of Translational Medical Research, Panyu Central Hospital, Guangzhou, 511400, China
- School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Zai-Yong Zhang
- Department of Cardiology, Panyu Central Hospital, Guangzhou, 511400, China
- Cardiovascular Institute of Panyu District, Guangzhou, 511400, China
| | - Qiao-Wei Li
- Department of Neurology, Panyu District Central Hospital, Guangzhou, 511400, China
| | - Cheng Long
- South China Normal University-Panyu Central Hospital Joint Laboratory of Translational Medical Research, Panyu Central Hospital, Guangzhou, 511400, China.
- School of Life Sciences, South China Normal University, Guangzhou, 510631, China.
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Sheng ZF, Zhang H, Phaup JG, Zheng P, Kang X, Liu Z, Chang HM, Yeh ETH, Johnson AK, Pan HL, Li DP. Corticotropin-releasing hormone neurons in the central nucleus of amygdala are required for chronic stress-induced hypertension. Cardiovasc Res 2023; 119:1751-1762. [PMID: 37041718 PMCID: PMC10325697 DOI: 10.1093/cvr/cvad056] [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: 05/01/2022] [Revised: 11/30/2022] [Accepted: 04/08/2023] [Indexed: 04/13/2023] Open
Abstract
AIMS Chronic stress is a well-known risk factor for the development of hypertension. However, the underlying mechanisms remain unclear. Corticotropin-releasing hormone (CRH) neurons in the central nucleus of the amygdala (CeA) are involved in the autonomic responses to chronic stress. Here, we determined the role of CeA-CRH neurons in chronic stress-induced hypertension. METHODS AND RESULTS Borderline hypertensive rats (BHRs) and Wistar-Kyoto (WKY) rats were subjected to chronic unpredictable stress (CUS). Firing activity and M-currents of CeA-CRH neurons were assessed, and a CRH-Cre-directed chemogenetic approach was used to suppress CeA-CRH neurons. CUS induced a sustained elevation of arterial blood pressure (ABP) and heart rate (HR) in BHRs, while in WKY rats, CUS-induced increases in ABP and HR quickly returned to baseline levels after CUS ended. CeA-CRH neurons displayed significantly higher firing activities in CUS-treated BHRs than unstressed BHRs. Selectively suppressing CeA-CRH neurons by chemogenetic approach attenuated CUS-induced hypertension and decreased elevated sympathetic outflow in CUS-treated BHRs. Also, CUS significantly decreased protein and mRNA levels of Kv7.2 and Kv7.3 channels in the CeA of BHRs. M-currents in CeA-CRH neurons were significantly decreased in CUS-treated BHRs compared with unstressed BHRs. Blocking Kv7 channel with its blocker XE-991 increased the excitability of CeA-CRH neurons in unstressed BHRs but not in CUS-treated BHRs. Microinjection of XE-991 into the CeA increased sympathetic outflow and ABP in unstressed BHRs but not in CUS-treated BHRs. CONCLUSIONS CeA-CRH neurons are required for chronic stress-induced sustained hypertension. The hyperactivity of CeA-CRH neurons may be due to impaired Kv7 channel activity, which represents a new mechanism involved in chronic stress-induced hypertension.
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Affiliation(s)
- Zhao-Fu Sheng
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, One Hospital Drive, Columbia, MO 65212, USA
| | - Hua Zhang
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, One Hospital Drive, Columbia, MO 65212, USA
| | - Jeffery G Phaup
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, One Hospital Drive, Columbia, MO 65212, USA
| | - PeiRu Zheng
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, One Hospital Drive, Columbia, MO 65212, USA
| | - XunLei Kang
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, One Hospital Drive, Columbia, MO 65212, USA
| | - Zhenguo Liu
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, One Hospital Drive, Columbia, MO 65212, USA
| | - Hui-Ming Chang
- Department of Pharmacology, The University of Arkansas for Medical Sciences, 4301 West Markham Street, Little Rock, AR 72205, USA
- Department of Toxicology, The University of Arkansas for Medical Sciences, 4301 West Markham Street, Little Rock, AR 72205, USA
- Department of Internal Medicine, The University of Arkansas for Medical Sciences, 4301 West Markham Street, Little Rock, AR 72205, USA
| | - Edward T H Yeh
- Department of Pharmacology, The University of Arkansas for Medical Sciences, 4301 West Markham Street, Little Rock, AR 72205, USA
- Department of Toxicology, The University of Arkansas for Medical Sciences, 4301 West Markham Street, Little Rock, AR 72205, USA
- Department of Internal Medicine, The University of Arkansas for Medical Sciences, 4301 West Markham Street, Little Rock, AR 72205, USA
| | - Alan Kim Johnson
- Department of Psychological and Brain Sciences, The University of Iowa, G60 Psychological and Brain Sciences Building, Iowa City, IA 52242, USA
| | - Hui-Lin Pan
- Department of Anesthesiology and Perioperative Medicine, The University of Texas, MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA
| | - De-Pei Li
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, One Hospital Drive, Columbia, MO 65212, USA
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Ma H, Cui Z, Guo X, Zhao Q, Zhang Y, Guan Y, Yang P, Zhu H, Wang S, Zhang X, Zhang Y, Pan HL, Ma H. Corticotropin-releasing factor potentiates glutamatergic input and excitability of presympathetic neurons in the hypothalamus in spontaneously hypertensive rats. Neuropharmacology 2023; 230:109506. [PMID: 36924924 DOI: 10.1016/j.neuropharm.2023.109506] [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: 11/16/2022] [Revised: 02/28/2023] [Accepted: 03/10/2023] [Indexed: 03/15/2023]
Abstract
Hyperactivity of presympathetic neurons in the hypothalamic paraventricular nucleus (PVN) plays a key role in generating excess sympathetic output in hypertension. However, the mechanisms driving hyperactivity of PVN presympathetic neurons in hypertension are unclear. In this study, we determined the role of corticotropin-releasing factor (CRF) in the PVN in augmented glutamatergic input, neuronal excitability and sympathetic outflow in hypertension. The number of CRF or c-Fos immunoreactive neurons and CRF/c-Fos double-labeled neurons in the PVN was significantly greater in spontaneously hypertensive rats (SHRs) than in normotensive Wistar-Kyoto (WKY) rats. Blocking glutamatergic input reduced the CRF-potentiated excitability of spinally projecting PVN neurons. Furthermore, CRF knockdown via Crispr/Cas9 in the PVN decreased the frequencies of spontaneous firing and miniature excitatory postsynaptic currents (mEPSCs) in spinally projecting PVN neurons in SHRs. In addition, the mRNA and protein levels of CRFR1, but not CRFR2, in the PVN were significantly higher in SHRs than in WKY rats. Blocking CRFR1 with NBI-35965, but not blocking CRFR2 with Antisauvagine-30, reduced the frequencies of spontaneous firing and mEPSCs of spinally projecting PVN neurons in SHRs. Also, microinjection of NBI-35965 into the PVN significantly reduced arterial blood pressure (ABP) and renal sympathetic nerve activity (RSNA) in anesthetized SHRs, but not in WKY rats. However, microinjection of Antisauvagine-30 into the PVN had no effect on ABP or RSNA in WKY rats and SHRs. Our findings suggest that endogenous CRF in the PVN potentiates glutamatergic input and firing activity of PVN presympathetic neurons via CRFR1, resulting in augmented sympathetic outflow in hypertension.
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Affiliation(s)
- Hongyu Ma
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China
| | - Ziye Cui
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China
| | - Xinqi Guo
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China
| | - Qiyue Zhao
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China
| | - Ying Zhang
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China
| | - Yue Guan
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China; Key Laboratory of Neurophysiology of Hebei Province, Shijiazhuang, 050017, Hebei, China
| | - Peiyun Yang
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China
| | - Huaibing Zhu
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China
| | - Sheng Wang
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China; Key Laboratory of Neurophysiology of Hebei Province, Shijiazhuang, 050017, Hebei, China
| | - Xiangjian Zhang
- The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, 050017, China
| | - Yi Zhang
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China; Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, China
| | - Hui-Lin Pan
- Department of Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Huijie Ma
- Department of Physiology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China; Key Laboratory of Neurophysiology of Hebei Province, Shijiazhuang, 050017, Hebei, China; The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, China.
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Jiang C, Wang H, Qi J, Li J, He Q, Wang C, Gao Y. Antidepressant effects of cherry leaf decoction on a chronic unpredictable mild stress rat model based on the Glu/GABA-Gln metabolic loop. Metab Brain Dis 2022; 37:2883-2901. [PMID: 36181653 DOI: 10.1007/s11011-022-01081-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 09/04/2022] [Indexed: 01/10/2023]
Abstract
Cherry leaves (Prunus pseudocerasus Lindl. [Rosaceae]), a traditional Chinese herbal medicine, can regulate the factors closely related to depression including inflammatory cytokines, oxidative stress and blood glucose level. However, the antidepressant effects of cherry leaves and underlying neuromodulatory mechanisms remain relatively have not been elucidated explicitly. The present study investigated the antidepressant effects of cherry leaf decoction (CLD). The underlying neuromodulatory mechanism was explored by examining the glutamate (Glu)/γ-aminobutyric acid (GABA)-glutamine (Gln) metabolic loop. The chronic unpredictable mild stress (CUMS) rodent model was used in this study. The main flavonoids components of CLD were identified using high-performance liquid chromatography (HPLC). The antidepressant effects of CLD were assessed throughout behavioural tests including the bodyweight, sucrose preference test (SPT), forced swimming test (FPT) and tail suspension test (TST). Moreover, The baseline levels of serum adrenocorticotropic hormone (ACTH) and corticosterone (CORT) were quantified. The expression of proteins integrally involved in the Glu/GABA-Gln metabolic loop were observed and quantified by Western blotting, reverse transcription-polymerase chain reaction (RT-PCR) and immunohistochemistry. This study found that CLD ameliorated depressive-like behaviours induced by CUMS. The increase of serum ACTH and CORT baseline levels induced by CUMS was also reversed after CLD intervention. Furthermore, CUMS reduced the expression of GAD65, GAD67, GLT-1, GS and GABAA and increased NMDAR1 levels in the rat hippocampus, which was normalized by CLD treatment. The findings demonstrated that CLD could ameliorate the depression-like behaviours induced by CUMS, potentially through the inhibition of hypothalamic-pituitary-adrenal (HPA) axis hyperactivity and the regulation of Glu/GABA-Gln metabolic loop.
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Affiliation(s)
- Chuan Jiang
- Department of Preventive Medicine, Hebei University of Chinese Medicine, 3 Xingyuan Road, Shijiazhuang, 050200, Hebei, People's Republic of China
| | - Hua Wang
- Department of Preventive Medicine, Hebei University of Chinese Medicine, 3 Xingyuan Road, Shijiazhuang, 050200, Hebei, People's Republic of China
| | - Jiaying Qi
- Department of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang, 050200, Hebei, People's Republic of China
| | - Jinghan Li
- Department of Preventive Medicine, Hebei University of Chinese Medicine, 3 Xingyuan Road, Shijiazhuang, 050200, Hebei, People's Republic of China
| | - Qianqian He
- Department of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang, 050200, Hebei, People's Republic of China
| | - Chaonan Wang
- Department of Preventive Medicine, Hebei University of Chinese Medicine, 3 Xingyuan Road, Shijiazhuang, 050200, Hebei, People's Republic of China.
| | - Yonggang Gao
- Department of Preventive Medicine, Hebei University of Chinese Medicine, 3 Xingyuan Road, Shijiazhuang, 050200, Hebei, People's Republic of China.
- Hebei Key Laboratory of Chinese Medicine Research On Cardio-Cerebrovascular Disease, Shijiazhuang, 050200, Hebei, People's Republic of China.
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Post-traumatic stress disorder in the Canadian Longitudinal Study on Aging: A genome-wide association study. J Psychiatr Res 2022; 154:209-218. [PMID: 35952521 DOI: 10.1016/j.jpsychires.2022.07.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/06/2022] [Accepted: 07/20/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Canada exhibits one of highest lifetime prevalence for post-traumatic stress disorder (PTSD), but the etiology of this debilitating mental health condition still remains largely unknown. This study aims to examine the genetics of PTSD in the Canadian Longitudinal Study on Aging (CLSA) to identify potential genetic factors involved in the development of PTSD. METHOD The CLSA sample was screened for primary (PTSD status) and secondary outcomes (avoidance, detachment, guardedness, and nightmares) based on the Primary Care PTSD Screen Scale (PC-PTSD). After GWAS quality control and whole-genome imputation, single-marker, gene-based, and polygenic risk score (PRS) analyses were performed. RESULTS Based on available genotype and phenotype data, N = 16,535 individuals were selected for the analyses. While genome-wide analyses did not show significant findings for our primary and secondary outcomes, PRS analyses showed variable levels of association between PC-PTSD items with trauma, major depressive disorder, schizophrenia, bipolar disorder, educational attainment, and insomnia (p < 5e-4). CONCLUSION This is the first GWAS of PTSD status and individual PC-PTSD items in a population sample of older adults from Canada. This study was also able to replicate findings from previous studies. Genetic investigations into individual symptom components of PTSD may help untangle the complex genetic architecture of PTSD.
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9
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Molecular relation between biological stress and carcinogenesis. Mol Biol Rep 2022; 49:9929-9945. [PMID: 35610338 DOI: 10.1007/s11033-022-07543-6] [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: 01/11/2022] [Accepted: 04/29/2022] [Indexed: 10/18/2022]
Abstract
This paper aims to overview different types of stress, including DNA replication stress, oxidative stress, and psychological stress. Understanding the processes that constitute a cellular response to varied types of stress lets us find differences in how normal cells and cancer cells react to the appearance of a particular kind of stressor. The revealed dissimilarities are the key for targeting new molecules and signaling pathways in anticancer treatment. For this reason, molecular mechanisms that underlay DNA replication stress, oxidative stress, and psychological stress have been studied and briefly presented to indicate biochemical points that make stressors contribute to cancer development. What is more, the viewpoint in which cancer constitutes the outcome and the cause of stress has been taken into consideration. In a described way, this paper draws attention to the problem of cancer-related post-traumatic stress disorder and proposes a novel, multidimensional oncological approach, connecting anticancer treatment with psychiatric support.
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10
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Zhang H, Sheng ZF, Wang J, Zheng PR, Kang XL, Chang HM, Yeh ETH, Li DP. Signaling pathways involved in NMDA-induced suppression of M-channels in corticotropin-releasing hormone neurons in central amygdala. J Neurochem 2022; 161:478-491. [PMID: 35583089 DOI: 10.1111/jnc.15647] [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: 12/21/2021] [Revised: 05/02/2022] [Accepted: 05/11/2022] [Indexed: 11/27/2022]
Abstract
Glutamate N-methyl-D-aspartate (NMDA) receptors (NMDARs) and Kv7/M channels are importantly involved in regulating neuronal activity involved in various physiological and pathological functions. Corticotropin-releasing hormone (CRH)-expressing neurons in the central nucleus of the amygdala (CeA) critically mediate autonomic response during stress. However, the interaction between NMDA receptors and Kv7/M channels in the CRHCeA neurons remains unclear. In this study, we identified rat CRHCeA neurons through the expression of an AAV viral vector-mediated enhanced green fluorescent protein (eGFP) driven by the rat CRH promoter. M-currents carried by Kv7/M channels were recorded using the whole-cell patch-clamp approach in eGFP-tagged CRHCeA neurons in brain slices. Acute exposure to NMDA significantly reduced M-currents recorded from the CRHCeA neurons. NMDA-induced suppression of M-currents was eliminated by chelating intracellular Ca2+ , supplying phosphatidylinositol 4,5-bisphosphate (PIP2) intracellularly, or blocking phosphoinositide3-kinase (PI3K). In contrast, inhibiting protein kinase C (PKC) or calmodulin did not alter NMDA-induced suppression of M-currents. Sustained exposure of NMDA decreased Kv7.3 membrane protein levels and suppressed M-currents, while the Kv7.2 expression levels remained unaltered. Pre-treatment of brain slices with PKC inhibitors alleviated the decreases in Kv7.3 and reduction of M-currents in CRHCeA neurons induced by NMDA. PKC inhibitors did not alter Kv7.2 and Kv7.3 membrane protein levels and M-currents in CRHCeA neurons. These data suggest that transient activation of NMDARs suppresses M-currents through the Ca2+ -dependent PI3K-PIP2 signaling pathway. In contrast, sustained activation of NMDARs reduces Kv7.3 protein expression and suppresses M-currents through a PKC-dependent pathway.
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Affiliation(s)
- Hua Zhang
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, Columbia MO 65212
| | - Zhao-Fu Sheng
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, Columbia MO 65212
| | - Jingxiong Wang
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, Columbia MO 65212
| | - Pei Ru Zheng
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, Columbia MO 65212
| | - Xun Lei Kang
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, Columbia MO 65212
| | - Hui-Ming Chang
- Departments of Pharmacology and Toxicology and Internal Medicine, The University of Arkansas for Medical Sciences
| | - Edward T H Yeh
- Departments of Pharmacology and Toxicology and Internal Medicine, The University of Arkansas for Medical Sciences
| | - De-Pei Li
- Center for Precision Medicine, Department of Medicine, School of Medicine University of Missouri, Columbia MO 65212
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11
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Díaz-Hung ML, Hetz C. Proteostasis and resilience: on the interphase between individual's and intracellular stress. Trends Endocrinol Metab 2022; 33:305-317. [PMID: 35337729 DOI: 10.1016/j.tem.2022.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 02/18/2022] [Accepted: 02/22/2022] [Indexed: 10/18/2022]
Abstract
A long proportion of the population is resilient to the negative consequences of stress. Glucocorticoids resulting from endocrine responses to stress are essential adaptive mediators, but also drive alterations to brain function, negatively impacting neuronal connectivity, synaptic plasticity, and memory-related processes. Recent evidence has indicated that organelle function and cellular stress responses are relevant determinant of vulnerability and resistance to environmental stress. At the molecular level, a fundamental mechanism of cellular stress adaptation is the maintenance of proteostasis, which also have key roles in sustaining basal neuronal function. Here, we discuss recent evidence suggesting that proteostasis unbalance at the level of the endoplasmic reticulum, the main site for protein folding in the cell, represents a possible mechanistic link between individuals and cellular stress.
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Affiliation(s)
- Mei-Li Díaz-Hung
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, University of Chile, Santiago, Chile; FONDAP Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
| | - Claudio Hetz
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, University of Chile, Santiago, Chile; FONDAP Center for Geroscience, Brain Health and Metabolism, Santiago, Chile; Buck Institute for Research on Aging, Novato, CA, USA.
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12
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Brain-heart communication in health and diseases. Brain Res Bull 2022; 183:27-37. [PMID: 35217133 DOI: 10.1016/j.brainresbull.2022.02.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/09/2022] [Accepted: 02/16/2022] [Indexed: 12/19/2022]
Abstract
Tight connections between the brain and heart have attracted a considerable amount of attention. This review focuses on the anatomical (extrinsic cardiac autonomic nervous system and intrinsic cardiac autonomic nervous system) and functional (neuroendocrine-heart axis and neuroimmune-heart axis) connections between the brain and heart, the linkage between central nervous system diseases and cardiovascular diseases, the harm of sympathetic hyperactivity to the heart, and current neuromodulation therapies. Depression is a comorbidity of cardiovascular diseases, and the two are causally related. This review summarizes the mechanisms and treatment of depression and cardiovascular diseases, providing theoretical evidence for basic research and clinical studies to improve treatment options.
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13
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Martynyuk AE, Ju LS, Morey TE. The potential role of stress and sex steroids in heritable effects of sevoflurane. Biol Reprod 2021; 105:735-746. [PMID: 34192761 DOI: 10.1093/biolre/ioab129] [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: 03/01/2021] [Revised: 03/17/2021] [Accepted: 06/25/2021] [Indexed: 12/11/2022] Open
Abstract
Most surgical procedures require general anesthesia, which is a reversible deep sedation state lacking all perception. The induction of this state is possible because of complex molecular and neuronal network actions of general anesthetics (GAs) and other pharmacological agents. Laboratory and clinical studies indicate that the effects of GAs may not be completely reversible upon anesthesia withdrawal. The long-term neurocognitive effects of GAs, especially when administered at the extremes of ages, are an increasingly recognized health concern and the subject of extensive laboratory and clinical research. Initial studies in rodents suggest that the adverse effects of GAs, whose actions involve enhancement of GABA type A receptor activity (GABAergic GAs), can also extend to future unexposed offspring. Importantly, experimental findings show that GABAergic GAs may induce heritable effects when administered from the early postnatal period to at least young adulthood, covering nearly all age groups that may have children after exposure to anesthesia. More studies are needed to understand when and how the clinical use of GAs in a large and growing population of patients can result in lower resilience to diseases in the even larger population of their unexposed offspring. This minireview is focused on the authors' published results and data in the literature supporting the notion that GABAergic GAs, in particular sevoflurane, may upregulate systemic levels of stress and sex steroids and alter expressions of genes that are essential for the functioning of these steroid systems. The authors hypothesize that stress and sex steroids are involved in the mediation of sex-specific heritable effects of sevoflurane.
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Affiliation(s)
- Anatoly E Martynyuk
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA.,McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL, USA
| | - Ling-Sha Ju
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Timothy E Morey
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA
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14
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Engelke DS, Zhang XO, O'Malley JJ, Fernandez-Leon JA, Li S, Kirouac GJ, Beierlein M, Do-Monte FH. A hypothalamic-thalamostriatal circuit that controls approach-avoidance conflict in rats. Nat Commun 2021; 12:2517. [PMID: 33947849 PMCID: PMC8097010 DOI: 10.1038/s41467-021-22730-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 03/27/2021] [Indexed: 12/27/2022] Open
Abstract
Survival depends on a balance between seeking rewards and avoiding potential threats, but the neural circuits that regulate this motivational conflict remain largely unknown. Using an approach-food vs. avoid-predator threat conflict test in rats, we identified a subpopulation of neurons in the anterior portion of the paraventricular thalamic nucleus (aPVT) which express corticotrophin-releasing factor (CRF) and are preferentially recruited during conflict. Inactivation of aPVTCRF neurons during conflict biases animal's response toward food, whereas activation of these cells recapitulates the food-seeking suppression observed during conflict. aPVTCRF neurons project densely to the nucleus accumbens (NAc), and activity in this pathway reduces food seeking and increases avoidance. In addition, we identified the ventromedial hypothalamus (VMH) as a critical input to aPVTCRF neurons, and demonstrated that VMH-aPVT neurons mediate defensive behaviors exclusively during conflict. Together, our findings describe a hypothalamic-thalamostriatal circuit that suppresses reward-seeking behavior under the competing demands of avoiding threats.
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Affiliation(s)
- D S Engelke
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center, Houston, TX, USA
| | - X O Zhang
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center, Houston, TX, USA
| | - J J O'Malley
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center, Houston, TX, USA
| | - J A Fernandez-Leon
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center, Houston, TX, USA
| | - S Li
- Department of Oral Biol., University of Manitoba, Winnipeg, MB, Canada
| | - G J Kirouac
- Department of Oral Biol., University of Manitoba, Winnipeg, MB, Canada
| | - M Beierlein
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center, Houston, TX, USA
| | - F H Do-Monte
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center, Houston, TX, USA.
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15
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Cui B, Peng F, Lu J, He B, Su Q, Luo H, Deng Z, Jiang T, Su K, Huang Y, Ud Din Z, Lam EWF, Kelley KW, Liu Q. Cancer and stress: NextGen strategies. Brain Behav Immun 2021; 93:368-383. [PMID: 33160090 DOI: 10.1016/j.bbi.2020.11.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 10/17/2020] [Accepted: 11/01/2020] [Indexed: 12/12/2022] Open
Abstract
Chronic stress is well-known to cause physiological distress that leads to body balance perturbations by altering signaling pathways in the neuroendocrine and sympathetic nervous systems. This increases allostatic load, which is the cost of physiological fluctuations that are required to cope with psychological challenges as well as changes in the physical environment. Recent studies have enriched our knowledge about the role of chronic stress in disease development, especially carcinogenesis. Stress stimulates the hypothalamic-pituitaryadrenal (HPA) axis and the sympathetic nervous system (SNS), resulting in an abnormal release of hormones. These activate signaling pathways that elevate expression of downstream oncogenes. This occurs by activation of specific receptors that promote numerous cancer biological processes, including proliferation, genomic instability, angiogenesis, metastasis, immune evasion and metabolic disorders. Moreover, accumulating evidence has revealed that β-adrenergic receptor (ADRB) antagonists and downstream target inhibitors exhibit remarkable anti-tumor effects. Psychosomatic behavioral interventions (PBI) and traditional Chinese medicine (TCM) also effectively relieve the impact of stress in cancer patients. In this review, we discuss recent advances in the underlying mechanisms that are responsible for stress in promoting malignancies. Collectively, these data provide approaches for NextGen pharmacological therapies, PBI and TCM to reduce the burden of tumorigenesis.
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Affiliation(s)
- Bai Cui
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China; State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-sen University, 651 Dongfeng East Road, Guangzhou, Guangdong Province 510060, China
| | - Fei Peng
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Jinxin Lu
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Bin He
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Qitong Su
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Huandong Luo
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Ziqian Deng
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Tonghui Jiang
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Keyu Su
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Yanping Huang
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Zaheer Ud Din
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China
| | - Eric W-F Lam
- Department of Surgery and Cancer, Imperial College London, London W12 0NN, UK
| | - Keith W Kelley
- Department of Pathology, College of Medicine and Department of Animal Sciences, College of ACES, University of Illinois at Urbana-Champaign, 212 Edward R. Madigan Laboratory, 1201 West Gregory Drive, Urbana, Il 61801, USA.
| | - Quentin Liu
- Institute of Cancer Stem Cell, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian, Liaoning Province 116044, China; State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-sen University, 651 Dongfeng East Road, Guangzhou, Guangdong Province 510060, China.
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16
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Kim HR, Rajagopal L, Meltzer HY, Martina M. Depolarizing GABA A current in the prefrontal cortex is linked with cognitive impairment in a mouse model relevant for schizophrenia. SCIENCE ADVANCES 2021; 7:eaba5032. [PMID: 33789887 PMCID: PMC8011979 DOI: 10.1126/sciadv.aba5032] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/12/2021] [Indexed: 05/06/2023]
Abstract
Cognitive impairment in schizophrenia (CIAS) is the most critical predictor of functional outcome. Limited understanding of the cellular mechanisms of CIAS hampers development of more effective treatments. We found that in subchronic phencyclidine (scPCP)-treated mice, an animal model that mimics CIAS, the reversal potential of GABAA currents in pyramidal neurons of the infralimbic prefrontal cortex (ILC) shifts from hyperpolarizing to depolarizing, the result of increased expression of the chloride transporter NKCC1. Further, we found that in scPCP mice, the NKCC1 antagonist bumetanide normalizes GABAA current polarity ex vivo and improves performance in multiple cognitive tasks in vivo. This behavioral effect was mimicked by selective, bilateral, NKCC1 knockdown in the ILC. Thus, we show that depolarizing GABAA currents in the ILC contributes to cognitive impairments in scPCP mice and suggest that bumetanide, an FDA-approved drug, has potential to treat or prevent CIAS and other components of the schizophrenia syndrome.
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Affiliation(s)
- Haram R Kim
- Department of Physiology, Feinberg School of Medicine, Northwestern University, 300 E. Chicago Avenue, Chicago, IL 60611, USA
| | - Lakshmi Rajagopal
- Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, 300 E. Chicago Avenue, Chicago, IL 60611, USA
| | - Herbert Y Meltzer
- Department of Physiology, Feinberg School of Medicine, Northwestern University, 300 E. Chicago Avenue, Chicago, IL 60611, USA.
- Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, 300 E. Chicago Avenue, Chicago, IL 60611, USA
| | - Marco Martina
- Department of Physiology, Feinberg School of Medicine, Northwestern University, 300 E. Chicago Avenue, Chicago, IL 60611, USA.
- Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, 300 E. Chicago Avenue, Chicago, IL 60611, USA
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Dionysopoulou S, Charmandari E, Bargiota A, Vlahos NF, Mastorakos G, Valsamakis G. The Role of Hypothalamic Inflammation in Diet-Induced Obesity and Its Association with Cognitive and Mood Disorders. Nutrients 2021; 13:nu13020498. [PMID: 33546219 PMCID: PMC7913301 DOI: 10.3390/nu13020498] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/24/2021] [Accepted: 01/30/2021] [Indexed: 02/07/2023] Open
Abstract
Obesity is often associated with cognitive and mood disorders. Recent evidence suggests that obesity may cause hypothalamic inflammation. Our aim was to investigate the hypothesis that there is a causal link between obesity-induced hypothalamic inflammation and cognitive and mood disorders. Inflammation may influence hypothalamic inter-connections with regions important for cognition and mood, while it may cause dysregulation of the Hypothalamic-Pituitary-Adrenal (HPA) axis and influence monoaminergic systems. Exercise, healthy diet, and glucagon-like peptide receptor agonists, which can reduce hypothalamic inflammation in obese models, could improve the deleterious effects on cognition and mood.
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Affiliation(s)
- Sofia Dionysopoulou
- Division of Endocrinology, Metabolism and Diabetes, Hippocratio General Hospital, 11527 Athens, Greece;
| | - Evangelia Charmandari
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, ‘Aghia Sophia’ Children’s Hospital, 11527 Athens, Greece;
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Alexandra Bargiota
- Department of Endocrinology and Metabolic Diseases, University Hospital of Larisa, Medical School of Larisa, University of Thessaly, 41334 Larisa, Greece;
| | - Nikolaos F Vlahos
- 2nd Department of Obstetrics and Gynecology, Areteion University Hospital, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece;
| | - George Mastorakos
- Endocrine Unit, Areteion University Hospital, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece;
| | - Georgios Valsamakis
- Department of Endocrinology and Metabolic Diseases, University Hospital of Larisa, Medical School of Larisa, University of Thessaly, 41334 Larisa, Greece;
- Endocrine Unit, Areteion University Hospital, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece;
- Correspondence: ; Tel.: +30-694-889-3274
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Stress-Induced Alteration in Chloride Transporters in the Trigeminal Nerve May Explain the Comorbidity between Depression and Migraine. PSYCHIATRY INTERNATIONAL 2020. [DOI: 10.3390/psychiatryint1020006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Migraine is frequently comorbid with depression and anxiety disorders. In the case of depression and panic disorder, the associations seem to be bidirectional. Stress (activation of the hypothalamic-pituitary-adrenal axis) is thought to be involved in increasing the attack frequency. In the current review, it is argued that elevated levels of cortisol increase the function of chloride-ion transporter NKCC1 and decrease the function of chloride-extruder KCC2 in the trigeminal nerve. This leads to a diminished inhibitory effect of gamma-aminobutyric acid (GABA) and an enhanced likelihood of a migraine attack. Since migraine attacks themselves are stressful, and since brain areas are activated that could contribute to panic, anxiety and depression, a number of self-sustaining circular processes could occur that would explain the bi-directionality of the associations. On the basis of this hypothesis, several novel therapeutic approaches to counter the pathological process can be proposed. These include inhibition of corticotrophin releasing factor by CRF1 receptor antagonists, blockade of adrenocorticotropic hormone (ACTH) at the MC2 receptor, and inhibition of the hyperactive NKCC1 chloride-transporter.
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Interleukin-18 from neurons and microglia mediates depressive behaviors in mice with post-stroke depression. Brain Behav Immun 2020; 88:411-420. [PMID: 32272223 DOI: 10.1016/j.bbi.2020.04.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/23/2020] [Accepted: 04/04/2020] [Indexed: 02/07/2023] Open
Abstract
Post-stroke depression (PSD) is a common and serious complication that is affecting one thirds of stroke patients which leaves them with a poor quality of life, high mortality rate, high recurrent rate, and slow recovery. Recent studies showed that serum interleukin-18 (IL-18) level is a biomarker for patients with PSD. However, the role of IL-18 in the pathology of PSD is still unclear. In this study, we demonstrated that the IL-18 level in the ischemic brain significantly increased in mice with depression-like behaviors that were caused by the combined use of chronic spatial restraint stress and middle cerebral artery occlusion. Interestingly, IL-18 expression was mainly found in neurons at early phase and in microglia at a later phase. Injection of the exogenous IL-18 into the amygdala, but not the hippocampus or the striatum caused severe depression-like behaviors. On the contrary, the blockage of endogenous IL-18 by IL-18 binding protein, a specific antagonist of IL-18, repressed depressive phenotypes in SIR mice. IL-18 KO mice exhibited the resistance to spatial restraint stress and cerebral ischemia injury. Finally, we found that IL-18 mediated depressive behaviors by the interaction of IL-18 receptor and NKCC1, a sodium-potassium chloride co-transporter that is related to GABAergic inhibition. Administration of NKCC1 antagonist bumetanide exerted a therapeutic effect on the in IL-18-induced depressive mice. In conclusion, we demonstrated that increased IL-18 in the brain causes depression-like behaviors by promoting the IL-18 receptor/NKCC1 signaling pathway. Targeting IL-18 and its downstream pathway is a promising strategy for the prevention and treatment of PSD.
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Swaab DF, Bao AM. Sex differences in stress-related disorders: Major depressive disorder, bipolar disorder, and posttraumatic stress disorder. HANDBOOK OF CLINICAL NEUROLOGY 2020; 175:335-358. [PMID: 33008536 DOI: 10.1016/b978-0-444-64123-6.00023-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Stress-related disorders, such as mood disorders and posttraumatic stress disorder (PTSD), are more common in women than in men. This sex difference is at least partly due to the organizing effect of sex steroids during intrauterine development, while activating or inhibiting effects of circulating sex hormones in the postnatal period and adulthood also play a role. Such effects result in structural and functional changes in neuronal networks, neurotransmitters, and neuropeptides, which make the arousal- and stress-related brain systems more vulnerable to environmental stressful events in women. Certain brainstem nuclei, the amygdala, habenula, prefrontal cortex, and hypothalamus are important hubs in the stress-related neuronal network. Various hypothalamic nuclei play a central role in this sexually dimorphic network. This concerns not only the hypothalamus-pituitary-adrenal axis (HPA-axis), which integrates the neuro-endocrine-immune responses to stress, but also other hypothalamic nuclei and systems that play a key role in the symptoms of mood disorders, such as disordered day-night rhythm, lack of reward feelings, disturbed eating and sex, and disturbed cognitive functions. The present chapter focuses on the structural and functional sex differences that are present in the stress-related brain systems in mood disorders and PTSD, placing the HPA-axis in the center. The individual differences in the vulnerability of the discussed systems, caused by genetic and epigenetic developmental factors warrant further research to develop tailor-made therapeutic strategies.
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Affiliation(s)
- Dick F Swaab
- Netherlands Institute for Neuroscience, An Institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands; Department of Neurobiology and Department of Neurology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Zhejiang, China.
| | - Ai-Min Bao
- Department of Neurobiology and Department of Neurology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Zhejiang, China; Key Laboratory of Mental Disorder Management, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
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Kim YB, Colwell CS, Kim YI. Long-term ionic plasticity of GABAergic signalling in the hypothalamus. J Neuroendocrinol 2019; 31:e12753. [PMID: 31166034 DOI: 10.1111/jne.12753] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 05/24/2019] [Accepted: 06/03/2019] [Indexed: 12/23/2022]
Abstract
The hypothalamus contains a number of nuclei that subserve a variety of functions, including generation of circadian rhythms, regulation of hormone secretion and maintenance of homeostatic levels for a variety of physiological parameters. Within the hypothalamus, γ-amino-butyric acid (GABA) is one of the major neurotransmitters responsible for cellular communication. Although GABA most commonly serves as an inhibitory neurotransmitter, a growing body of evidence indicates that it can evoke post-synaptic excitation as a result of the active regulation of intracellular chloride concentration. In this review, we consider the evidence for this ionic plasticity of GABAergic synaptic transmission in five distinct cases in hypothalamic cell populations. We argue that this plasticity serves as part of the functional response to or is at least associated with dehydration, lactation, hypertension and stress. As such, GABA excitation should be considered as part of the core homeostatic mechanisms of the hypothalamus.
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Affiliation(s)
- Young-Beom Kim
- Department of Physiology, Korea University College of Medicine, Seoul, Korea
- Neuroscience Research Institute, Korea University, Seoul, Korea
| | - Christopher S Colwell
- Department of Psychiatry and Biobehavioral Sciences, UCLA School of Medicine, Los Angeles, CA, USA
| | - Yang In Kim
- Department of Physiology, Korea University College of Medicine, Seoul, Korea
- Neuroscience Research Institute, Korea University, Seoul, Korea
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22
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Novel Treatment Targets Based on Insights in the Etiology of Depression: Role of IL-6 Trans-Signaling and Stress-Induced Elevation of Glutamate and ATP. Pharmaceuticals (Basel) 2019; 12:ph12030113. [PMID: 31362361 PMCID: PMC6789839 DOI: 10.3390/ph12030113] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/10/2019] [Accepted: 07/26/2019] [Indexed: 12/11/2022] Open
Abstract
Inflammation and psychological stress are risk factors for major depression and suicide. Both increase central glutamate levels and activate the hypothalamic-pituitary-adrenal axis and the sympathetic nervous system. Both factors also affect the function of the chloride transporters, Na-K-Cl-cotransporter-1 (NKCC1) and K-Cl-cotransporter-2 (KCC2), and provoke interleukin-6 (IL-6) trans-signaling. This leads to measurable increases in circulating corticosteroids, catecholamines, anxiety, somatic and psychological symptoms, and a decline in cognitive functions. Recognition of the sequence of pathological events allows the prediction of novel targets for therapeutic intervention. Amongst others, these include blockade of the big-K potassium channel, blockade of the P2X4 channel, TYK2-kinase inhibition, noradrenaline α2B-receptor antagonism, nicotinic α7-receptor stimulation, and the Sgp130Fc antibody. A better understanding of downstream processes evoked by inflammation and stress also allows suggestions for tentatively better biomarkers (e.g., SERPINA3N, MARCKS, or 13C-tryptophan metabolism).
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23
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Zhou JJ, Ma HJ, Shao J, Wei Y, Zhang X, Zhang Y, Li DP. Downregulation of Orexin Receptor in Hypothalamic Paraventricular Nucleus Decreases Blood Pressure in Obese Zucker Rats. J Am Heart Assoc 2019; 8:e011434. [PMID: 31213116 PMCID: PMC6662376 DOI: 10.1161/jaha.118.011434] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Background Orexin and its receptors are critical regulating sympathetic vasomotor tone under physiological and pathophysiological conditions. Orexin receptor 1 (OXR1) is upregulated in the paraventricular nucleus (PVN) in the hypothalamus and contributes to increased sympathetic outflow in obese Zucker rats (OZRs). We hypothesized that silencing OXR1 expression in the PVN decreases heightened blood pressure and elevated sympathetic outflow in OZRs. Methods and Results An adeno‐associated virus (AAV) vector containing a short hairpin RNA (shRNA) targeting rat OXR1 was designed to silence OXR1 expression in the PVN. The AAV‐OXR1‐shRNA or scrambled shRNA was injected into the PVN in OZRs. The arterial blood pressure in free‐moving OZRs was continuously monitored by using a telemetry approach. The firing activity of spinally projecting PVN neurons in rat brain slices was recorded 3 to 4 weeks after injection of viral vectors. The free‐moving OZRs treated with AAV‐OXR1‐shRNA had markedly lower OXR1 expression and lower mean arterial blood pressure, heart rate, and ratio of low‐ to high‐frequency components of heart rate variability compared with OZRs treated with scrambled shRNA. Furthermore, AAV‐OXR1‐shRNA treatment markedly reduced renal sympathetic nerve activity and attenuated sympathoexcitatory response induced by microinjection of orexin A into the PVN. In addition, treatment with AAV‐OXR1‐shRNA substantially decreased the basal firing activity of spinally projecting PVN neurons in OZRs and attenuated the excitatory effect of orexin A on the firing activity of these neurons. Conclusions These data suggest that chronic downregulation of OXR1 expression in the PVN reduces sympathetic vasomotor tone in obesity‐related hypertension.
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Affiliation(s)
- Jing-Jing Zhou
- 1 Division of Anesthesiology & Critical Care The University of Texas MD Anderson Cancer Center Houston TX
| | - Hui-Jie Ma
- 1 Division of Anesthesiology & Critical Care The University of Texas MD Anderson Cancer Center Houston TX.,2 Department of Physiology Hebei Medical University Shijiazhuang China
| | - Jianying Shao
- 1 Division of Anesthesiology & Critical Care The University of Texas MD Anderson Cancer Center Houston TX
| | - Yan Wei
- 3 Key Laboratory of Medical Electrophysiology Ministry of Education Institute of Cardiovascular Research Southwest Medical University Luzhou China
| | - Xiangjian Zhang
- 4 Hebei Collaborative Innovation Center for Cardiocerebrovascular Disease 2nd Hospital of Hebei Medical University Shijiazhuang China.,5 Department of Neurology 2nd Hospital of Hebei Medical University Shijiazhuang China
| | - Yi Zhang
- 2 Department of Physiology Hebei Medical University Shijiazhuang China.,4 Hebei Collaborative Innovation Center for Cardiocerebrovascular Disease 2nd Hospital of Hebei Medical University Shijiazhuang China
| | - De-Pei Li
- 1 Division of Anesthesiology & Critical Care The University of Texas MD Anderson Cancer Center Houston TX.,6 Department of Medicine Center for Precision Medicine University of Missouri Columbia MO
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24
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Cloarec R, Riffault B, Dufour A, Rabiei H, Gouty-Colomer LA, Dumon C, Guimond D, Bonifazi P, Eftekhari S, Lozovaya N, Ferrari DC, Ben-Ari Y. Pyramidal neuron growth and increased hippocampal volume during labor and birth in autism. SCIENCE ADVANCES 2019; 5:eaav0394. [PMID: 30746473 PMCID: PMC6357736 DOI: 10.1126/sciadv.aav0394] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 12/10/2018] [Indexed: 06/09/2023]
Abstract
We report that the apical dendrites of CA3 hippocampal pyramidal neurons are increased during labor and birth in the valproate model of autism but not in control animals. Using the iDISCO clearing method, we show that hippocampal, especially CA3 region, and neocortical volumes are increased and that the cerebral volume distribution shifts from normal to lognormal in valproate-treated animals. Maternal administration during labor and birth of the NKCC1 chloride transporter antagonist bumetanide, which reduces [Cl-]i levels and attenuates the severity of autism, abolished the neocortical and hippocampal volume changes and reduced the whole-brain volume in valproate-treated animals. These results suggest that the abolition of the oxytocin-mediated excitatory-to-inhibitory shift of GABA actions during labor and birth contributes to the pathogenesis of autism spectrum disorders by stimulating growth during a vulnerable period.
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Affiliation(s)
- R. Cloarec
- Neurochlore, Ben-Ari Institute of Neuroarcheology (IBEN), Zone Luminy Biotech Entreprises, 13288 Cedex 09 , Marseille, France
| | - B. Riffault
- Neurochlore, Ben-Ari Institute of Neuroarcheology (IBEN), Zone Luminy Biotech Entreprises, 13288 Cedex 09 , Marseille, France
| | - A. Dufour
- Neurochlore, Ben-Ari Institute of Neuroarcheology (IBEN), Zone Luminy Biotech Entreprises, 13288 Cedex 09 , Marseille, France
| | - H. Rabiei
- Neurochlore, Ben-Ari Institute of Neuroarcheology (IBEN), Zone Luminy Biotech Entreprises, 13288 Cedex 09 , Marseille, France
| | - L.-A. Gouty-Colomer
- Neurochlore, Ben-Ari Institute of Neuroarcheology (IBEN), Zone Luminy Biotech Entreprises, 13288 Cedex 09 , Marseille, France
| | - C. Dumon
- Neurochlore, Ben-Ari Institute of Neuroarcheology (IBEN), Zone Luminy Biotech Entreprises, 13288 Cedex 09 , Marseille, France
| | - D. Guimond
- Neurochlore, Ben-Ari Institute of Neuroarcheology (IBEN), Zone Luminy Biotech Entreprises, 13288 Cedex 09 , Marseille, France
| | - P. Bonifazi
- Biocruces Health Research Institute, Barakaldo, Spain & IKERBASQUE: The Basque Foundation for Science, Bilbao, Spain
| | - S. Eftekhari
- Neurochlore, Ben-Ari Institute of Neuroarcheology (IBEN), Zone Luminy Biotech Entreprises, 13288 Cedex 09 , Marseille, France
| | - N. Lozovaya
- Neurochlore, Ben-Ari Institute of Neuroarcheology (IBEN), Zone Luminy Biotech Entreprises, 13288 Cedex 09 , Marseille, France
| | - D. C. Ferrari
- Neurochlore, Ben-Ari Institute of Neuroarcheology (IBEN), Zone Luminy Biotech Entreprises, 13288 Cedex 09 , Marseille, France
| | - Y. Ben-Ari
- Neurochlore, Ben-Ari Institute of Neuroarcheology (IBEN), Zone Luminy Biotech Entreprises, 13288 Cedex 09 , Marseille, France
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25
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Bao AM, Swaab DF. The human hypothalamus in mood disorders: The HPA axis in the center. IBRO Rep 2018; 6:45-53. [PMID: 31211281 PMCID: PMC6562194 DOI: 10.1016/j.ibror.2018.11.008] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 11/28/2018] [Indexed: 02/08/2023] Open
Abstract
There are no specific structural neuropathological hallmarks found in the brain of mood disorders. Instead, there are molecular, functional and structural alterations reported in many brain areas. The neurodevelopmental underpinning indicated the presence of various genetic and developmental risk factors. The effect of genetic polymorphisms and developmental sequalae, some of which may start in the womb, result in functional changes in a network mediated by neurotransmitters and neuropeptides, which make the emotion- and stress-related brain systems more vulnerable to stressful events. This network of stress-related neurocircuits consists of, for instance, brainstem nuclei, the amygdala, habenula, prefrontal cortex and hypothalamus. Various nuclei of the hypothalamus form indeed one of the crucial hubs in this network. This structure concerns not only the hypothalamo-pituitary-adrenal (HPA) axis that integrate the neuro-endocrine-immune responses to stress, but also other hypothalamic nuclei and systems that play a key role in the symptoms of depression, such as disordered day-night rhythm, lack of reward feelings, disturbed eating, sex, and disturbed cognitive functions. The present review will focus on the changes in the human hypothalamus in depression, with the HPA axis in the center. We will discuss the inordinate network of neurotransmitters and neuropeptides involved, with the hope to find the most vulnerable neurobiological systems and the possible development of tailor-made treatments for mood disorders in the future.
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Affiliation(s)
- Ai-Min Bao
- Department of Neurobiology and Department of Neurology of the Second Affiliated Hospital, Institute of neuroscience, NHC and CAMS key laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
| | - Dick F Swaab
- Department of Neurobiology and Department of Neurology of the Second Affiliated Hospital, Institute of neuroscience, NHC and CAMS key laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou, China.,Netherlands Institute for Neuroscience, An Institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands
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26
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Impaired Hypothalamic Regulation of Sympathetic Outflow in Primary Hypertension. Neurosci Bull 2018; 35:124-132. [PMID: 30506315 DOI: 10.1007/s12264-018-0316-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 11/01/2018] [Indexed: 01/01/2023] Open
Abstract
The hypothalamic paraventricular nucleus (PVN) is a crucial region involved in maintaining homeostasis through the regulation of cardiovascular, neuroendocrine, and other functions. The PVN provides a dominant source of excitatory drive to the sympathetic outflow through innervation of the brainstem and spinal cord in hypertension. We discuss current findings on the role of the PVN in the regulation of sympathetic output in both normotensive and hypertensive conditions. The PVN seems to play a major role in generating the elevated sympathetic vasomotor activity that is characteristic of multiple forms of hypertension, including primary hypertension in humans. Recent studies in the spontaneously hypertensive rat model have revealed an imbalance of inhibitory and excitatory synaptic inputs to PVN pre-sympathetic neurons as indicated by impaired inhibitory and enhanced excitatory synaptic inputs in hypertension. This imbalance of inhibitory and excitatory synaptic inputs in the PVN forms the basis for elevated sympathetic outflow in hypertension. In this review, we discuss the disruption of balance between glutamatergic and GABAergic inputs and the associated cellular and molecular alterations as mechanisms underlying the hyperactivity of PVN pre-sympathetic neurons in hypertension.
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27
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Yang J, Ju L, Yang C, Xue J, Setlow B, Morey TE, Gravenstein N, Seubert CN, Vasilopoulos T, Martynyuk AE. Effects of combined brief etomidate anesthesia and postnatal stress on amygdala expression of Cl - cotransporters and corticotropin-releasing hormone and alcohol intake in adult rats. Neurosci Lett 2018; 685:83-89. [PMID: 30125644 DOI: 10.1016/j.neulet.2018.08.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 08/09/2018] [Accepted: 08/16/2018] [Indexed: 01/18/2023]
Abstract
Early life stressors, including general anesthesia, can have adverse effects on adult neural and behavioral outcomes, such as disruptions in inhibitory signaling, stress responsivity and increased risk of psychiatric disorders. Here we used a rat model to determine the effects of combined exposure to etomidate (ET) neonatal anesthesia and maternal separation on adult amygdala expression of genes for corticotropin-releasing hormone (Crh) and the chloride co-transporters Nkcc1 and Kcc2, as well as ethanol intake. Male and female Sprague-Dawley rats were subjected to 2 h of ET anesthesia on postnatal days (P) 4, 5, or 6 followed by maternal separation for 3 h on P10 (ET + SEP). During the P91-P120 period rats had daily 2 h access to three 0.05% saccharin solutions containing 0%, 5%, or 10% ethanol, followed by gene expression analyses. The ET + SEP group had increased Crh mRNA levels and Nkcc1/Kcc2 mRNA ratios in the amygdala, with greater increases in Nkcc1/Kcc2 mRNA ratios in males. A moderate increase in 5% ethanol intake was evident in the ET + SEP males, but not females, after calculation of the ratio of alcohol intake between the last week and first week of exposure. In contrast, control males tended to decrease alcohol consumption during the same period. A brief exposure to ET combined with a subsequent episode of stress early in life induced significant alterations in expression of amygdala Crh, Nkcc1 and Kcc2 with greater changes in the Cl- transporter expression in males. The possibility of increased alcohol intake in the exposed males requires further confirmation using different alcohol intake paradigms.
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Affiliation(s)
- Jiaojiao Yang
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Lingsha Ju
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Chunyao Yang
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Jinhu Xue
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Barry Setlow
- The McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL, United States; Department of Psychiatry, University of Florida College of Medicine, Gainesville, FL, United States
| | - Timothy E Morey
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Nikolaus Gravenstein
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States; The McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL, United States
| | - Christoph N Seubert
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Terrie Vasilopoulos
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Anatoly E Martynyuk
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States; The McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL, United States.
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28
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Luo J, Xu P, Cao P, Wan H, Lv X, Xu S, Wang G, Cook MN, Jones BC, Lu L, Wang X. Integrating Genetic and Gene Co-expression Analysis Identifies Gene Networks Involved in Alcohol and Stress Responses. Front Mol Neurosci 2018; 11:102. [PMID: 29674951 PMCID: PMC5895640 DOI: 10.3389/fnmol.2018.00102] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 03/15/2018] [Indexed: 02/06/2023] Open
Abstract
Although the link between stress and alcohol is well recognized, the underlying mechanisms of how they interplay at the molecular level remain unclear. The purpose of this study is to identify molecular networks underlying the effects of alcohol and stress responses, as well as their interaction on anxiety behaviors in the hippocampus of mice using a systems genetics approach. Here, we applied a gene co-expression network approach to transcriptomes of 41 BXD mouse strains under four conditions: stress, alcohol, stress-induced alcohol and control. The co-expression analysis identified 14 modules and characterized four expression patterns across the four conditions. The four expression patterns include up-regulation in no restraint stress and given an ethanol injection (NOE) but restoration in restraint stress followed by an ethanol injection (RSE; pattern 1), down-regulation in NOE but rescue in RSE (pattern 2), up-regulation in both restraint stress followed by a saline injection (RSS) and NOE, and further amplification in RSE (pattern 3), and up-regulation in RSS but reduction in both NOE and RSE (pattern 4). We further identified four functional subnetworks by superimposing protein-protein interactions (PPIs) to the 14 co-expression modules, including γ-aminobutyric acid receptor (GABA) signaling, glutamate signaling, neuropeptide signaling, cAMP-dependent signaling. We further performed module specificity analysis to identify modules that are specific to stress, alcohol, or stress-induced alcohol responses. Finally, we conducted causality analysis to link genetic variation to these identified modules, and anxiety behaviors after stress and alcohol treatments. This study underscores the importance of integrative analysis and offers new insights into the molecular networks underlying stress and alcohol responses.
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Affiliation(s)
- Jie Luo
- Central Laboratory of Zhejiang Academy of Agricultural Sciences, Zhejiang Academy of Agricultural Sciences Hangzhou, China.,Institute of Digital Agriculture, Zhejiang Academy of Agricultural Sciences Hangzhou, China
| | - Pei Xu
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences Hangzhou, China.,State Key Laboratory Breeding Base for Sustainable Control of Plant Pest and Disease, Zhejiang Academy of Agricultural Sciences Hangzhou, China
| | - Peijian Cao
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC Zhengzhou, China
| | - Hongjian Wan
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences Hangzhou, China
| | - Xiaonan Lv
- Institute of Digital Agriculture, Zhejiang Academy of Agricultural Sciences Hangzhou, China
| | - Shengchun Xu
- Central Laboratory of Zhejiang Academy of Agricultural Sciences, Zhejiang Academy of Agricultural Sciences Hangzhou, China
| | - Gangjun Wang
- Central Laboratory of Zhejiang Academy of Agricultural Sciences, Zhejiang Academy of Agricultural Sciences Hangzhou, China
| | - Melloni N Cook
- Department of Genetics, Genomics, and Informatics, University of Tennessee Health Science Center Memphis, TN, United States.,Department of Psychology, University of Memphis Memphis, TN, United States
| | - Byron C Jones
- Department of Genetics, Genomics, and Informatics, University of Tennessee Health Science Center Memphis, TN, United States
| | - Lu Lu
- Department of Genetics, Genomics, and Informatics, University of Tennessee Health Science Center Memphis, TN, United States.,Department of Neurology, Affiliated Hospital of Nantong University Nantong, China
| | - Xusheng Wang
- St. Jude Proteomics Facility, St. Jude Children's Research Hospital Memphis, TN, United States
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29
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Zhou JJ, Gao Y, Zhang X, Kosten TA, Li DP. Enhanced Hypothalamic NMDA Receptor Activity Contributes to Hyperactivity of HPA Axis in Chronic Stress in Male Rats. Endocrinology 2018; 159:1537-1546. [PMID: 29390057 PMCID: PMC5839733 DOI: 10.1210/en.2017-03176] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 01/22/2018] [Indexed: 11/19/2022]
Abstract
Chronic stress stimulates corticotrophin-releasing hormone (CRH)-expressing neurons in the paraventricular nucleus (PVN) of the hypothalamus and leads to hypothalamic-pituitary-adrenal (HPA) axis hyperactivity, but the mechanisms underlying this action are unknown. Because chronic stress enhances N-methyl-d-aspartate receptor (NMDAR) activity in various brain regions, we hypothesized that augmented NMDAR activity contributes to the hyperactivity of PVN-CRH neurons and the HPA axis in chronic stress. We performed whole-cell patch-clamp recordings on PVN-CRH neurons expressing CRH promoter-driven enhanced green fluorescent protein in brain slices from rats exposed to chronic unpredictable mild stress (CUMS) and unstressed rats. CUMS rats had significantly higher expression levels of the NMDAR subunits GluN1 in the PVN than unstressed rats. Furthermore, puff NMDA-elicited currents, evoked NMDAR currents, and the baseline frequency of the miniature excitatory postsynaptic currents (mEPSCs) in PVN-CRH neurons were significantly larger in CUMS rats than in unstressed rats. The NMDAR-specific antagonist 2-amino-5-phosphonopentanoic acid (AP5) significantly decreased the frequency of mEPSCs of PVN-CRH neurons in CUMS rats but did not change the frequency or amplitude of mEPSCs in unstressed rats. Bath application of AP5 normalized the elevated firing activity of PVN-CRH neurons in CUMS rats but not in unstressed rats. In addition, microinjection of the NMDAR antagonist memantine into the PVN normalized the elevated corticosterone (CORT) levels in CUMS rats to the levels in unstressed rats, but did not alter CORT levels in unstressed rats. Our findings suggest that synaptic NMDAR activity is enhanced in CUMS rats and contributes to the hyperactivity of PVN-CRN neurons and the HPA axis.
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Affiliation(s)
- Jing-Jing Zhou
- Department of Critical Care, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Yonggang Gao
- Department of Preventive Medicine, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050000, China
| | - Xiangjian Zhang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, China
- Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, Hebei 050000, China
| | - Therese A. Kosten
- Department of Psychology, University of Houston, Houston, Texas 77204
| | - De-Pei Li
- Department of Critical Care, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030
- Correspondence: De-Pei Li, MD, Department of Critical Care, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030. E-mail:
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30
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Local Corticotropin-Releasing Factor Signaling in the Hypothalamic Paraventricular Nucleus. J Neurosci 2018; 38:1874-1890. [PMID: 29352046 DOI: 10.1523/jneurosci.1492-17.2017] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 12/13/2017] [Accepted: 12/19/2017] [Indexed: 01/28/2023] Open
Abstract
Corticotropin-releasing factor (CRF) neurons in the hypothalamic paraventricular nucleus (PVN) initiate hypothalamic-pituitary-adrenal axis activity through the release of CRF into the portal system as part of a coordinated neuroendocrine, autonomic, and behavioral response to stress. The recent discovery of neurons expressing CRF receptor type 1 (CRFR1), the primary receptor for CRF, adjacent to CRF neurons within the PVN, suggests that CRF also signals within the hypothalamus to coordinate aspects of the stress response. Here, we characterize the electrophysiological and molecular properties of PVN-CRFR1 neurons and interrogate their monosynaptic connectivity using rabies virus-based tracing and optogenetic circuit mapping in male and female mice. We provide evidence that CRF neurons in the PVN form synapses on neighboring CRFR1 neurons and activate them by releasing CRF. CRFR1 neurons receive the majority of monosynaptic input from within the hypothalamus, mainly from the PVN itself. Locally, CRFR1 neurons make GABAergic synapses on parvocellular and magnocellular cells within the PVN. CRFR1 neurons resident in the PVN also make long-range glutamatergic synapses in autonomic nuclei such as the nucleus of the solitary tract. Selective ablation of PVN-CRFR1 neurons in male mice elevates corticosterone release during a stress response and slows the decrease in circulating corticosterone levels after the cessation of stress. Our experiments provide evidence for a novel intra-PVN neural circuit that is activated by local CRF release and coordinates autonomic and endocrine function during stress responses.SIGNIFICANCE STATEMENT The hypothalamic paraventricular nucleus (PVN) coordinates concomitant changes in autonomic and neuroendocrine function to organize the response to stress. This manuscript maps intra-PVN circuitry that signals via CRF, delineates CRF receptor type 1 neuron synaptic targets both within the PVN and at distal targets, and establishes the role of this microcircuit in regulating hypothalamic-pituitary-adrenal axis activity.
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31
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Yang J, Ju L, Jia M, Zhang H, Sun X, Ji M, Yang J, Martynyuk AE. Subsequent maternal separation exacerbates neurobehavioral abnormalities in rats neonatally exposed to sevoflurane anesthesia. Neurosci Lett 2017; 661:137-142. [PMID: 28982596 DOI: 10.1016/j.neulet.2017.09.063] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 09/24/2017] [Accepted: 09/29/2017] [Indexed: 12/16/2022]
Abstract
Several recent studies suggest that in the human population, a routine, short anesthetic in otherwise healthy infants is void of neurodevelopmental insult. On the other hand, many human retrospective epidemiological studies report evidence of cognitive abnormalities in children after testing those who had different anesthesia-requiring procedures in early childhood. We tested in a rat model whether post-anesthesia stressful environmental factors can contribute to developmental abnormalities that were initiated by a relatively short exposure to sevoflurane, the most widely used anesthetic in pediatric anesthesia, whose polyvalent actions include enhancement of gamma-aminobutyric acid type A receptor (GABAAR) activity. Postnatal day 6 (P6) male Sprague-Dawley rats were anesthetized with sevoflurane for 60min. To simulate subsequent stress, the animals were subjected to a single maternal separation for 180min at P10. To study the role of GABAAR-mediated depolarization, subgroups of P6 rats received a single injection of the Na+-K+-2Cl- (NKCC1) inhibitor, bumetanide, prior to initiation of anesthesia with sevoflurane. Rats that were exposed to sevoflurane had decreased hypothalamic K+-2Cl- (KCC2) mRNA level (F(2,13)=3.839, P=0.049), increased NKCC1/KCC2 mRNA ratio (F(2,13)=5.043, P=0.024) and increased corticotropin-releasing hormone (CRH) mRNA level (F(2,12)=9.450, P=0.003) at P10, the age at which maternal separation was imposed. Adult rats, neonatally exposed to a combination of sevoflurane and maternal separation, exhibited increases in the escape latencies greater than animals exposed to sevoflurane only (P=0.012), and only rats in the sevoflurane plus maternal separation group spent significantly less time in the target quadrant during the Morris water maze test (F(4,55)=4.856, P=0.002). Bumetanide ameliorated abnormalities induced by sevoflurane and a combination of sevoflurane plus maternal separation. Neonatal exposure to sevoflurane may sensitize to stressors later in life, and post-exposure stress may exacerbate neurodevelopmental abnormalities even after a relatively short exposure to sevoflurane in rodents. The NKCC1 downregulation prior to exposure to the anesthetic may be therapeutic.
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Affiliation(s)
- Jiaojiao Yang
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China; Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States; Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Lingsha Ju
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China; Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States; Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Min Jia
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Hui Zhang
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China; Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Xiaoru Sun
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China; Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Muhuo Ji
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China; Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Jianjun Yang
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China; Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China.
| | - Anatoly E Martynyuk
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States; McKnight Brain Institute, University of FL College of Medicine, Gainesville, FL, United States.
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Hu D, Yu ZL, Zhang Y, Han Y, Zhang W, Lu L, Shi J. Bumetanide treatment during early development rescues maternal separation-induced susceptibility to stress. Sci Rep 2017; 7:11878. [PMID: 28928398 PMCID: PMC5605528 DOI: 10.1038/s41598-017-12183-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 09/05/2017] [Indexed: 12/17/2022] Open
Abstract
Stress is a major risk factor for psychiatric disorders, such as depression, posttraumatic stress disorder, and schizophrenia. Early life stress, such as maternal separation, can have long-term effects on the development of the central nervous system and pathogenesis of psychiatric disorders. In the present study, we found that maternal separation increased the susceptibility to stress in adolescent rats, increased the expression of Na+/K+/2Cl- cotransporter 1 (NKCC1) on postnatal day 14, and increased the expression of K+/2Cl- cotransporter 2 (KCC2) and γ-aminobutyric acid A (GABAA) receptor subunits on postnatal day 40 in the hippocampus. NKCC1 inhibition by the U.S. Food and Drug Administration-approved drug bumetanide during the first two postnatal weeks rescued the depressive- and anxiety-like behavior that was induced by maternal separation and decreased the expression of NKCC1, KCC2 and GABAA receptor α1 and β2,3 subunits in the hippocampus. Bumetanide treatment during early development did not adversely affect body weight or normal behaviors in naive rats, or affect serum osmolality in adult rats. These results suggest that bumetanide treatment during early development may prevent the maternal separation-induced susceptibility to stress and impairments in GABAergic transmission in the hippocampus.
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Affiliation(s)
- Die Hu
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
- Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Zhou-Long Yu
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
- Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Yan Zhang
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
- Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Ying Han
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
| | - Wen Zhang
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
| | - Lin Lu
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
- Institute of Mental Health, National Clinical Research Center for Mental Disorders, Key Laboratory of Mental Health and Peking University Sixth Hospital, Peking University, Beijing, 100191, China
- Peking-Tsinghua Center for Life Sciences and PKU-IDG/McGovern Institute for Brain Research, Beijing, 100191, China
| | - Jie Shi
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China.
- State Key Laboratory of Natural and Biomimetic Drugs, Beijing, 100191, China.
- Key Laboratory for Neuroscience of the Ministry of Education and Ministry of Public Healthy, Beijing, 100191, China.
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Ben-Ari Y. NKCC1 Chloride Importer Antagonists Attenuate Many Neurological and Psychiatric Disorders. Trends Neurosci 2017; 40:536-554. [PMID: 28818303 DOI: 10.1016/j.tins.2017.07.001] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/03/2017] [Accepted: 07/10/2017] [Indexed: 12/23/2022]
Abstract
In physiological conditions, adult neurons have low intracellular Cl- [(Cl-)I] levels underlying the γ-aminobutyric acid (GABA)ergic inhibitory drive. In contrast, neurons have high (Cl-)I levels and excitatory GABA actions in a wide range of pathological conditions including spinal cord lesions, chronic pain, brain trauma, cerebrovascular infarcts, autism, Rett and Down syndrome, various types of epilepsies, and other genetic or environmental insults. The diuretic highly specific NKCC1 chloride importer antagonist bumetanide (PubChem CID: 2461) efficiently restores low (Cl-)I levels and attenuates many disorders in experimental conditions and in some clinical trials. Here, I review the mechanisms of action, therapeutic effects, promises, and pitfalls of bumetanide.
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Affiliation(s)
- Yehezkel Ben-Ari
- New INMED, Aix-Marseille University, Campus Scientifique de Luminy, Marseilles, France.
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Gao Y, Zhou JJ, Zhu Y, Wang L, Kosten TA, Zhang X, Li DP. Neuroadaptations of presynaptic and postsynaptic GABA B receptor function in the paraventricular nucleus in response to chronic unpredictable stress. Br J Pharmacol 2017. [PMID: 28635080 DOI: 10.1111/bph.13924] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND AND PURPOSE Chronic stress impairs GABAA (GABA type A) receptor-mediated inhibition in the hypothalamic paraventricular nucleus (PVN). It is not clear whether GABAB receptor function is also altered. We hypothesize that chronic stress alters GABAB receptor function in PVN corticotrophin-releasing hormone (CRH) neurons to control hypothalamus-pituitary-adrenal axis activity. EXPERIMENTAL APPROACH Whole-cell patch clamp recordings were made of PVN-CRH neurons expressing eGFP driven by CRH promoter in brain slices from unstressed rats and rats exposed to chronic unpredictable mild stress (CUMS). KEY RESULTS CUMS elevated the basal circulating corticosterone levels and increased the basal firing activity of PVN-CRH neurons. Microinjection of GABAB receptor agonist baclofen into the PVN suppressed the increased corticosterone levels in CUMS rats compared with unstressed rats. CUMS blunted the baclofen-induced inhibition on PVN-CRH neurons and outward currents in these neurons. Furthermore, CUMS reduced expression of GABAB1 (GABAB R1) protein in the PVN. Blocking NMDA receptors with AP5 restored the reduced baclofen-induced currents in CUMS rats but had no effect on GABAB1 expression. Furthermore, CUMS treatment augmented the baclofen-induced decrease in the frequency of glutamatergic excitatory postsynaptic currents (EPSCs) and GABAergic inhibitor postsynaptic currents in PVN-CRH neurons. The GABAB receptor antagonist CGP55845 increased the firing activity of PVN-CRH neurons only in CUMS-treated rats and not in unstressed rats. CONCLUSIONS AND IMPLICATIONS These findings suggest that chronic stress impairs postsynaptic GABAB receptor function but augments presynaptic GABAB receptor function in controlling glutamatergic and GABAergic synaptic inputs in PVN-CRH neurons.
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Affiliation(s)
- Yonggang Gao
- Department of Critical Care and Anesthesiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Department of Preventive Medicine, Hebei University of Chinese Medicine, Shijiazhuang, HeBei, China
| | - Jing-Jing Zhou
- Department of Critical Care and Anesthesiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yun Zhu
- Department of Otorhinolaryngology, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Li Wang
- Department of Critical Care and Anesthesiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Therese A Kosten
- Department of Psychology, University of Houston, Houston, TX, USA
| | - Xiangjian Zhang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.,Hebei Collaborative Innovation Center for Cardiocerebrovascular Disease, Shijiazhuang, Hebei, China
| | - De-Pei Li
- Department of Critical Care and Anesthesiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Ju LS, Yang JJ, Gravenstein N, Seubert CN, Morey TE, Sumners C, Vasilopoulos T, Yang JJ, Martynyuk AE. Role of environmental stressors in determining the developmental outcome of neonatal anesthesia. Psychoneuroendocrinology 2017; 81:96-104. [PMID: 28433802 PMCID: PMC5492971 DOI: 10.1016/j.psyneuen.2017.04.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 03/28/2017] [Accepted: 04/04/2017] [Indexed: 12/17/2022]
Abstract
BACKGROUND The majority of studies evaluating neurocognition in humans who had procedures under anesthesia early in life found long-term deficits even though the typical anesthesia duration normalized to the human life span is much shorter than that shown to induce developmental abnormalities in rodents. Therefore, we studied whether subsequent environmental stressors contribute to deficiencies programmed by a brief neonatal etomidate exposure. METHODS Postnatal days (P) 4, 5, or 6, Sprague-Dawley rats, pretreated with vehicle or the Na+-K+-2Cl- (NKCC1) inhibitor, bumetanide, received two injections of etomidate resulting in anesthesia for 2h. To simulate stress after anesthesia, the animals were exposed to a single maternal separation for 3h at P10. 3-7days after exposure to etomidate the rats had increased hypothalamic NKCC1 mRNA and corticotropin releasing hormone (CRH) mRNA and decreased K+-2Cl- (KCC2) mRNA levels with greater changes in males. In rats neonatally exposed to both etomidate and maternal separation, these abnormalities persisted into adulthood. These animals also exhibited extended corticosterone responses to restraint stress with increases in total plasma corticosterone more robust in males, as well as behavioral abnormalities. Pretreatment with the NKCC1 inhibitor ameliorated most of these effects. CONCLUSIONS Post-anesthesia stressors may exacerbate/unmask neurodevelopmental abnormalities even after a relatively short anesthetic with etomidate, leading to dysregulated stress response systems and neurobehavioral deficiencies in adulthood. Amelioration by bumetanide suggests a mechanistic role for etomidate-enhanced gamma-aminobutyric acid type A receptor-mediated depolarization in initiating long-lasting alterations in gene expression that are further potentiated by subsequent maternal separation.
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Affiliation(s)
- Ling-Sha Ju
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Jiao-Jiao Yang
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Nikolaus Gravenstein
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States; The McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL, United States
| | - Christoph N Seubert
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Timothy E Morey
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Colin Sumners
- The McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL, United States; Department of Physiology and Functional Genomics, University of Florida College of Medicine, Gainesville, FL, United States
| | - Terrie Vasilopoulos
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
| | - Jian-Jun Yang
- Department of Anesthesiology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Anatoly E Martynyuk
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States; The McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL, United States.
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Zhou JJ, Gao Y, Kosten TA, Zhao Z, Li DP. Acute stress diminishes M-current contributing to elevated activity of hypothalamic-pituitary-adrenal axis. Neuropharmacology 2016; 114:67-76. [PMID: 27908768 DOI: 10.1016/j.neuropharm.2016.11.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 10/17/2016] [Accepted: 11/26/2016] [Indexed: 11/16/2022]
Abstract
Acute stress stimulates corticotrophin-releasing hormone (CRH)-expressing neurons in the hypothalamic paraventricular nucleus (PVN), which is an essential component of hypothalamic-pituitary-adrenal (HPA) axis. However, the cellular and molecular mechanisms remain unclear. The M-channel is a voltage-dependent K+ channel involved in stabilizing the neuronal membrane potential and regulating neuronal excitability. In this study, we tested our hypothesis that acute stress suppresses expression of Kv7 channels to stimulate PVN-CRH neurons and the HPA axis. Rat PVN-CRH neurons were identified by expressing enhanced green fluorescent protein driven by Crh promoter. Acute restraint stress attenuated the excitatory effect of Kv7 blocker XE-991 on the firing activity of PVN-CRH neurons and blunted the increase in plasma corticosterone (CORT) levels induced by microinjection of XE-991 into the PVN. Furthermore, acute stress significantly decreased the M-currents in PVN-CRH neurons and reduced PVN expression of Kv7.3 subunit in the membrane. In addition, acute stress significantly increased phosphorylated AMP-activated protein kinase (AMPK) levels in the PVN tissue. Intracerebroventricular injection of the AMPK inhibitor dorsomorphin restored acute stress-induced elevation of CORT levels and reduction of membrane Kv7.3 protein level in the PVN. Dorsomorphin treatment increased the M-currents and reduced the firing activity of PVN-CRH neurons in acutely stressed rats. Collectively, these data suggest that acute stress diminishes Kv7 channels to stimulate PVN-CRH neurons and the HPA axis potentially via increased AMPK activity.
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Affiliation(s)
- Jing-Jing Zhou
- Department of Critical Care, University of Texas MD Anderson Cancer Center, Houston, TX, USA; Department of Physiology, Hebei Medical University, Shijiazhuang, Hebei, PR China
| | - Yonggang Gao
- Department of Preventive Medicine, Hebei University of Chinese Medicine, Shijiazhuang, Hebei, PR China
| | - Therese A Kosten
- Department of Psychology, University of Houston, Houston, TX, USA
| | - Zongmao Zhao
- Department of Neurosurgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, PR China.
| | - De-Pei Li
- Department of Critical Care, University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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