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Othman MA, Husni M, El-Din WAN, Salem AH, Sarwani N, Rashid A, Fadel R. Prenatal aripiprazole induces alterations of rat placenta: a histological, immunohistochemical and ultrastructural study. J Mol Histol 2024; 55:415-426. [PMID: 38713244 DOI: 10.1007/s10735-024-10199-0] [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: 03/03/2024] [Accepted: 05/01/2024] [Indexed: 05/08/2024]
Abstract
Antipsychotic drugs (APDs) are used to treat many psychiatric illnesses as schizophrenia. Typical antipsychotic drugs (TAPDs) are being used; however, they have many side effects. Atypical antipsychotic drugs (AAPDs) are newer medications with known fewer side effects. Aripiprazole (ARI) is an AAPD, recommended by healthcare providers, even during pregnancy. It can cross the placental barrier and enter fetal circulation, so it might be possible that ARI can adversely impair normal placental development and growth, if it is given prenatally. ARI was applied orally to pregnant female rats in two doses (3& 6 mg/kg body weight). On gestation day 20, the mothers were sacrificed, and the placentas were removed and processed for general histological and electron microscopic evaluations. Immunohistochemistry was done using anti-PCNA (proliferating cell nuclear antigen), anti-Bax (for apoptosis) and anti-vascular endothelial growth factor alpha (VEGFA). Morphological evaluation revealed degenerative changes in the placenta as dark nuclei, vacuolization, and cyst formation. Ultra-structurally, there was degeneration of cellular components including organelles and nuclei. These changes were found in different cells of the basal and labyrinth zones and were dose dependent. Immunohistochemistry revealed upregulation of Bax and VEGFA and downregulation of PCNA. Prenatal administration of the AAPD, ARI to pregnant female rats resulted in histological changes in the placenta. Additionally, there was a decrease in cellular proliferation and increase in apoptosis, and vascular impairment. This indicates placental atrophy and dysgenesis and might suggest possible teratogenic effects to ARI, which needs further evaluation.
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Affiliation(s)
- Manal A Othman
- Department of Anatomy, College of Medicine and Medical Sciences, Arabian Gulf University, P.O Box: 26671, Manama, Bahrain.
- Department of Histology and Cell Biology, Faculty of Medicine, Assiut University, Assuit, Egypt.
| | - Mariwan Husni
- Department of Psychiatry, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
- Department of Psychiatry, Northern Ontario School of Medicine University, Ontario, Canada
| | - Wael Amin Nasr El-Din
- Department of Anatomy, College of Medicine and Medical Sciences, Arabian Gulf University, P.O Box: 26671, Manama, Bahrain
- Department of Human Anatomy and Embryology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Abdel-Halim Salem
- Department of Anatomy, College of Medicine and Medical Sciences, Arabian Gulf University, P.O Box: 26671, Manama, Bahrain
- Department of Human Anatomy and Embryology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Nasir Sarwani
- Department of Anatomy, College of Medicine and Medical Sciences, Arabian Gulf University, P.O Box: 26671, Manama, Bahrain
| | - Aisha Rashid
- Department of Anatomy, College of Medicine and Medical Sciences, Arabian Gulf University, P.O Box: 26671, Manama, Bahrain
| | - Raouf Fadel
- Department of Anatomy, College of Medicine and Medical Sciences, Arabian Gulf University, P.O Box: 26671, Manama, Bahrain
- Department of Human Anatomy and Embryology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
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Zhou W, Liu Y, Wang Z, Mao Z, Li M. Serum glucose/potassium ratio as a clinical risk factor for predicting the severity and prognosis of acute traumatic spinal cord injury. BMC Musculoskelet Disord 2023; 24:870. [PMID: 37946195 PMCID: PMC10633987 DOI: 10.1186/s12891-023-07013-5] [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: 07/21/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023] Open
Abstract
OBJECTIVE Acute traumatic Spinal cord injury (TSCI) is a devastating event that causes severe sensory and motor impairments as well as autonomic dysfunction in patients, yet relevant clinical biomarkers have not been established. This study aimed to determine the significance of the serum glucose/potassium ratio (GPR) in evaluating TSCI severity and predicting prognosis. METHODS An analysis of 520 clinical records of acute TSCI patients from January 2012 to June 2022 was conducted. The relationships between serum GPR and The American Spinal Injury Association Impairment Scale (AIS) grade 6-month post-trauma prognosis and the admission AIS grade were analyzed. To evaluate the discriminatory ability, a receiver operating characteristic curve (ROC) analysis was used. All methods were performed in accordance with the relevant guidelines and regulations. RESULTS Based on the initial assessment of AIS grade, 256 (49.2%) patients were categorized into the severe TSCI group (AIS A-B), and there was a significant correlation between the severe TSCI group and serum GPR (p < 0.001). Serum GPR was reduced in an AIS grade-dependent manner (R = - 0.540, p < 0.001). Of the 520 patients, 262 (50.4%) patients were classified as having a poor prognosis according to the AIS grade at discharge. Serum GPR was also reduced in an AIS grade at discharge-dependent manner (R = - 0.599, p < 0.001), and was significantly higher in the poor prognosis group compared to the good prognosis group (p < 0.001). Poor prognosis was significantly associated with sex (p = 0.009), severity of TSCI (p < 0.001), location of TSCI (p < 0.001), surgical decompression (p < 0.018), body temperature (p < 0.001), heart rate (p < 0.001), systolic arterial pressure (SAP) (p < 0.001), diastolic arterial pressure (DAP) (p < 0.001), serum GPR (p < 0.001), serum glucose (p < 0.001), serum potassium (p < 0.001), and white blood cell count (p = 0.003). Multivariate logistic regression analysis showed a significant correlation between poor prognosis and serum GPR (p = 0.023). The ROC analysis showed the area under the curve of serum GPR to be a poor predictor of prognosis in TSCI patients at 0.842 (95% confidence interval, 0.808-0.875). CONCLUSION There was a significant relationship between serum GPR and admission injury severity and the 6-month prognosis of acute TSCI patients. Serum GPR serves as a readily available clinical risk factor for predicting the severity and 6-month prognosis of acute traumatic spinal cord injury, which holds potential clinical significance for patients with TSCI.
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Affiliation(s)
- Wu Zhou
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yongwai Street, Nanchang, 330006, Jiangxi, China
| | - Yihao Liu
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yongwai Street, Nanchang, 330006, Jiangxi, China
| | - Zhihua Wang
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yongwai Street, Nanchang, 330006, Jiangxi, China
| | - Zelu Mao
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yongwai Street, Nanchang, 330006, Jiangxi, China
| | - Meihua Li
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yongwai Street, Nanchang, 330006, Jiangxi, China.
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Ochneva A, Zorkina Y, Abramova O, Pavlova O, Ushakova V, Morozova A, Zubkov E, Pavlov K, Gurina O, Chekhonin V. Protein Misfolding and Aggregation in the Brain: Common Pathogenetic Pathways in Neurodegenerative and Mental Disorders. Int J Mol Sci 2022; 23:14498. [PMID: 36430976 PMCID: PMC9695177 DOI: 10.3390/ijms232214498] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/07/2022] [Accepted: 11/19/2022] [Indexed: 11/23/2022] Open
Abstract
Mental disorders represent common brain diseases characterized by substantial impairments of social and cognitive functions. The neurobiological causes and mechanisms of psychopathologies still have not been definitively determined. Various forms of brain proteinopathies, which include a disruption of protein conformations and the formation of protein aggregates in brain tissues, may be a possible cause behind the development of psychiatric disorders. Proteinopathies are known to be the main cause of neurodegeneration, but much less attention is given to the role of protein impairments in psychiatric disorders' pathogenesis, such as depression and schizophrenia. For this reason, the aim of this review was to discuss the potential contribution of protein illnesses in the development of psychopathologies. The first part of the review describes the possible mechanisms of disruption to protein folding and aggregation in the cell: endoplasmic reticulum stress, dysfunction of chaperone proteins, altered mitochondrial function, and impaired autophagy processes. The second part of the review addresses the known proteins whose aggregation in brain tissue has been observed in psychiatric disorders (amyloid, tau protein, α-synuclein, DISC-1, disbindin-1, CRMP1, SNAP25, TRIOBP, NPAS3, GluA1, FABP, and ankyrin-G).
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Affiliation(s)
- Aleksandra Ochneva
- Department Basic and Applied Neurobiology, V.P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, 119034 Moscow, Russia
- Healthcare Department, Mental-Health Clinic No. 1 Named after N.A. Alexeev of Moscow, 117152 Moscow, Russia
| | - Yana Zorkina
- Department Basic and Applied Neurobiology, V.P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, 119034 Moscow, Russia
- Healthcare Department, Mental-Health Clinic No. 1 Named after N.A. Alexeev of Moscow, 117152 Moscow, Russia
| | - Olga Abramova
- Department Basic and Applied Neurobiology, V.P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, 119034 Moscow, Russia
- Healthcare Department, Mental-Health Clinic No. 1 Named after N.A. Alexeev of Moscow, 117152 Moscow, Russia
| | - Olga Pavlova
- Department Basic and Applied Neurobiology, V.P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, 119034 Moscow, Russia
| | - Valeriya Ushakova
- Department Basic and Applied Neurobiology, V.P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, 119034 Moscow, Russia
- Healthcare Department, Mental-Health Clinic No. 1 Named after N.A. Alexeev of Moscow, 117152 Moscow, Russia
- Department of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Anna Morozova
- Department Basic and Applied Neurobiology, V.P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, 119034 Moscow, Russia
- Healthcare Department, Mental-Health Clinic No. 1 Named after N.A. Alexeev of Moscow, 117152 Moscow, Russia
| | - Eugene Zubkov
- Department Basic and Applied Neurobiology, V.P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, 119034 Moscow, Russia
| | - Konstantin Pavlov
- Department Basic and Applied Neurobiology, V.P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, 119034 Moscow, Russia
- Healthcare Department, Mental-Health Clinic No. 1 Named after N.A. Alexeev of Moscow, 117152 Moscow, Russia
| | - Olga Gurina
- Department Basic and Applied Neurobiology, V.P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, 119034 Moscow, Russia
| | - Vladimir Chekhonin
- Department Basic and Applied Neurobiology, V.P. Serbsky Federal Medical Research Centre of Psychiatry and Narcology, 119034 Moscow, Russia
- Department of Medical Nanobiotechnology, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
- National University of Science and Technology “MISiS”, Leninskiy Avenue 4, 119049 Moscow, Russia
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Rodrigues RS, Paulo SL, Moreira JB, Tanqueiro SR, Sebastião AM, Diógenes MJ, Xapelli S. Adult Neural Stem Cells as Promising Targets in Psychiatric Disorders. Stem Cells Dev 2021; 29:1099-1117. [PMID: 32723008 DOI: 10.1089/scd.2020.0100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The development of new therapies for psychiatric disorders is of utmost importance, given the enormous toll these disorders pose to society nowadays. This should be based on the identification of neural substrates and mechanisms that underlie disease etiopathophysiology. Adult neural stem cells (NSCs) have been emerging as a promising platform to counteract brain damage. In this perspective article, we put forth a detailed view of how NSCs operate in the adult brain and influence brain homeostasis, having profound implications at both behavioral and functional levels. We appraise evidence suggesting that adult NSCs play important roles in regulating several forms of brain plasticity, particularly emotional and cognitive flexibility, and that NSC dynamics are altered upon brain pathology. Furthermore, we discuss the potential therapeutic value of utilizing adult endogenous NSCs as vessels for regeneration, highlighting their importance as targets for the treatment of multiple mental illnesses, such as affective disorders, schizophrenia, and addiction. Finally, we speculate on strategies to surpass current challenges in neuropsychiatric disease modeling and brain repair.
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Affiliation(s)
- Rui S Rodrigues
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Sara L Paulo
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - João B Moreira
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Sara R Tanqueiro
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Ana M Sebastião
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Maria J Diógenes
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Sara Xapelli
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
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He M, Qian K, Zhang Y, Huang XF, Deng C, Zhang B, Gao G, Li J, Xie H, Sun T. Olanzapine-Induced Activation of Hypothalamic Astrocytes and Toll-Like Receptor-4 Signaling via Endoplasmic Reticulum Stress Were Related to Olanzapine-Induced Weight Gain. Front Neurosci 2021; 14:589650. [PMID: 33584172 PMCID: PMC7874166 DOI: 10.3389/fnins.2020.589650] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 12/08/2020] [Indexed: 12/19/2022] Open
Abstract
The antipsychotic drug olanzapine is associated with serious obesity side effects. Hypothalamic astrocytes and associated toll-like receptor-4 (TLR4) signaling play an essential role in obesity pathogenesis. This study investigated the effect of olanzapine on astrocytes and TLR4 signaling both in vitro and in the rat hypothalamus and their potential role in olanzapine-induced weight gain. We found that olanzapine treatment for 24 h dose-dependently increased cell viability, increased the protein expression of astrocyte markers including glial fibrillary acidic protein (GFAP) and S100 calcium binding protein B (S100B), and activated TLR4 signaling in vitro. In rats, 8- and 36-day olanzapine treatment caused weight gain accompanied by increased GFAP and S100B protein expression and activated TLR4 signaling in the hypothalamus. These effects still existed in pair-fed rats, suggesting that these effects were not secondary effects of olanzapine-induced hyperphagia. Moreover, treatment with an endoplasmic reticulum (ER) stress inhibitor, 4-phenylbutyrate, inhibited olanzapine-induced weight gain and ameliorated olanzapine-induced changes in hypothalamic GFAP, S100B, and TLR4 signaling. The expression of GFAP, S100B, and TLR4 correlated with food intake and weight gain. These findings suggested that olanzapine-induced increase in hypothalamic astrocytes and activation of TLR4 signaling were related to ER stress, and these effects may be related to olanzapine-induced obesity.
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Affiliation(s)
- Meng He
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Kun Qian
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Ying Zhang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Xu-Feng Huang
- School of Medicine and Molecular Horizons, University of Wollongong, Wollongong, NSW, Australia
| | - Chao Deng
- School of Medicine and Molecular Horizons, University of Wollongong, Wollongong, NSW, Australia
| | - Baohua Zhang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Guanbin Gao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
| | - Jing Li
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Hao Xie
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Taolei Sun
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
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Chen Z, Guo H, Lu Z, Sun K, Jin Q. Hyperglycemia aggravates spinal cord injury through endoplasmic reticulum stress mediated neuronal apoptosis, gliosis and activation. Biomed Pharmacother 2019; 112:108672. [PMID: 30784940 DOI: 10.1016/j.biopha.2019.108672] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 01/29/2019] [Accepted: 02/05/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Hyperglycemia has been shown to influence prognostic outcome of spinal cord injury (SCI). However, the corresponding mechanism is not very clear. AIM This study is expected to explore the role of endoplasmic reticulum (ER) stress in hyperglycemia aggravated SCI. METHODS Hyperglycemia was established in rats by intraperitoneal (i.p.) injection of streptozotocin. SCI was performed at the T10 of spinal cord through weight dropping. ER stress was suppressed by oral gavage of 4-PBA. ER stress, histological change of the injured spinal cords, neuronal apoptosis, demyelination, glial proliferation, inflammatory factor production, blood-spinal cord barrier (BSCB) permeability, TJ (Occludin, Claudin5) and AJ (β-catenin, P120) protein degradation, and locomotor recovery were determined using western blotting, immunohistochemistry, HE staining, Evan's Blue assay, BBB scores and inclined plane test, respectively. In vitro, rat spinal cord neurons cells (RSCNCs) and cerebral microvascular endothelial cells (RCMECs) were stimulated with high glucose (HG) and/or thapsigargin (TG). The effects of HG and/or TG on RSCNCs apoptosis, and AJ and TJ expression by RCMECs were evaluated with flow cytometry and western blotting, respectively. RESULTS Hyperglycemic rats exhibited enhanced ER stress, increased neuronal apoptosis, aggravated demyelination, increased glial proliferation and inflammatory factors secretion, more serious BSCB disruption and disturbed locomotor recovery. ER stress inhibition alleviated hyperglycemia induced adverse effect on neuronal apoptosis and BSCB permeability, whereas showed little influence on glial activation and inflammation. CONCLUSION ER stress was aggravated in hyperglycemic rats after SCI, and subsequently promoted neuronal apoptosis and BSCB disruption in rats.
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Affiliation(s)
- Zhirong Chen
- Department of Orthopedics, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Haohui Guo
- Department of Orthopedics, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Zhidong Lu
- Department of Orthopedics, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Kening Sun
- Department of Orthopedics, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Qunhua Jin
- Department of Orthopedics, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China.
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Crosstalk between endoplasmic reticulum stress and oxidative stress in schizophrenia: The dawn of new therapeutic approaches. Neurosci Biobehav Rev 2017; 83:589-603. [DOI: 10.1016/j.neubiorev.2017.08.025] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 08/09/2017] [Accepted: 08/30/2017] [Indexed: 01/15/2023]
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Chen J, Wang T, Zhou XY, Tang CX, Gao DS. Glucose-6-phosphatase-α participates in dopaminergic differentiation. Neurol Res 2017; 39:869-876. [PMID: 28829278 DOI: 10.1080/01616412.2017.1348681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE Induction of dopaminergic (DA) differentiation is a cell-based therapy for Parkinson's disease (PD). Here, we explore the key factors of DA differentiation with a focus on glucose-6-phosphatase (G6Pase), a marker enzyme for the endoplasmic reticulum (ER) associated with cell differentiation. METHODS We cultured SH-SY5Y human neuroblastoma cells, a model system for PD research, and added glial cell-derived neurotrophic factor (GDNF; 25, 50, or 100 ng/ml) to stimulate differentiation. Subsequently, several methods, such as microRNA/mRNA microarrays, quantitative real-time polymerase chain reaction (qRT-PCR) and western blot were used to detect target genes and proteins respectively. RESULTS Light microscopy revealed that 50 ng/ml GDNF most effectively induced DA differentiation. MicroRNA/mRNA microarrays identified that G6PC mRNA was significantly upregulated, which might be influenced by three downregulated microRNAs. Follow-up qRT-PCR results were consistent with the microarray findings, and western blots also supported the results. DISCUSSION Taken together, our results demonstrate that G6PC, a subunit of G6Pase, participates in DA differentiation. Our findings may contribute to provide a foundation for the research on the mechanism of DA differentiation as well as cell-based therapy for PD.
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Affiliation(s)
- Jing Chen
- a Experimental Teaching Center of Morphology, Xuzhou Medical University , Xuzhou , China
| | - Ting Wang
- b Department of Human Anatomy and Neurobiology , Xuzhou Medical University , Xuzhou , China
| | - Xiao-Yan Zhou
- a Experimental Teaching Center of Morphology, Xuzhou Medical University , Xuzhou , China
| | - Chuan-Xi Tang
- b Department of Human Anatomy and Neurobiology , Xuzhou Medical University , Xuzhou , China
| | - Dian-Shuai Gao
- b Department of Human Anatomy and Neurobiology , Xuzhou Medical University , Xuzhou , China
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Singh KP, Singh MK, Gautam S. Effect of in utero exposure to the atypical anti-psychotic risperidone on histopathological features of the rat placenta. Int J Exp Pathol 2016; 97:125-32. [PMID: 27256515 DOI: 10.1111/iep.12176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 01/31/2016] [Indexed: 01/19/2023] Open
Abstract
For clinical management of different forms of psychosis, both classical and atypical anti-psychotic drugs (APDs) are available. These drugs are widely prescribed, even during pregnancy considering their minimal extra-pyramidal side effects and teratogenic potential compared to classical APDs. Among AAPDs, risperidone (RIS) is a first-line drug of choice by physicians. The molecular weight of RIS is 410.49 g/mol; hence, it can easily cross the placental barrier and enter the foetal bloodstream. It is not known whether or not AAPDs like RIS may affect the developing placenta and foetus adversely. Reports on this issue are limited and sketchy. Therefore, this study has evaluated the effects of maternal exposure to equivalent therapeutic doses of RIS on placental growth, histopathological and cytoarchitectural changes, and to establish a relationship between placental dysfunction and foetal outcomes. Pregnant rats (n = 24) were exposed to selected doses (0.8, 1.0 and 2.0 mg/kg) of RIS from gestation days 6-21. These dams were sacrificed; their placentas and foetuses were collected, morphometrically examined and further processed for histopathological examination. This study revealed that in utero exposure to equivalent therapeutic doses of RIS during organogenesis-induced placental dystrophy (size and weight), disturbed cytoarchitectural organization (thickness of different placental layers), histopathological lesions (necrosis in trophoblast with disruption of trophoblastic septa and rupturing of maternal-foetal interface) and intrauterine growth restriction of the foetuses. It may be concluded that multifactorial mechanisms might be involved in the dysregulation of structure and function of the placenta and of poor foetal growth and development.
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Affiliation(s)
- K P Singh
- Neurobiology Lab., Department of Zoology, University of Allahabad, Allahabad, India
| | - Manoj K Singh
- Neurobiology Lab., Department of Zoology, University of Allahabad, Allahabad, India
| | - Shrikant Gautam
- Neurobiology Lab., Department of Zoology, University of Allahabad, Allahabad, India
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Zeng Z, Wang X, Bhardwaj SK, Zhou X, Little PJ, Quirion R, Srivastava LK, Zheng W. The Atypical Antipsychotic Agent, Clozapine, Protects Against Corticosterone-Induced Death of PC12 Cells by Regulating the Akt/FoxO3a Signaling Pathway. Mol Neurobiol 2016; 54:3395-3406. [DOI: 10.1007/s12035-016-9904-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 05/03/2016] [Indexed: 01/28/2023]
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Production of human pluripotent stem cell therapeutics under defined xeno-free conditions: progress and challenges. Stem Cell Rev Rep 2015; 11:96-109. [PMID: 25077810 DOI: 10.1007/s12015-014-9544-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Recent advances on human pluripotent stem cells (hPSCs), including human embryonic stem cells (hESCs) and induced pluripotent stem cells (hiPSCs) have brought us closer to the realization of their clinical potential. Nonetheless, tissue engineering and regenerative medicine applications will require the generation of hPSC products well beyond the laboratory scale. This also mandates the production of hPSC therapeutics in fully-defined, xeno-free systems and in a reproducible manner. Toward this goal, we summarize current developments in defined media free of animal-derived components for hPSC culture. Bioinspired and synthetic extracellular matrices for the attachment, growth and differentiation of hPSCs are also reviewed. Given that most progress in xeno-free medium and substrate development has been demonstrated in two-dimensional rather than three dimensional culture systems, translation from the former to the latter poses unique difficulties. These challenges are discussed in the context of cultivation platforms of hPSCs as aggregates, on microcarriers or after encapsulation in biocompatible scaffolds.
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Maple AM, Smith KJ, Perna MK, Brown RW. Neonatal quinpirole treatment produces prepulse inhibition deficits in adult male and female rats. Pharmacol Biochem Behav 2015; 137:93-100. [DOI: 10.1016/j.pbb.2015.08.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 08/10/2015] [Accepted: 08/13/2015] [Indexed: 11/30/2022]
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13
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Farooqi AA, Li KT, Fayyaz S, Chang YT, Ismail M, Liaw CC, Yuan SSF, Tang JY, Chang HW. Anticancer drugs for the modulation of endoplasmic reticulum stress and oxidative stress. Tumour Biol 2015; 36:5743-52. [PMID: 26188905 PMCID: PMC4546701 DOI: 10.1007/s13277-015-3797-0] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Accepted: 07/10/2015] [Indexed: 12/20/2022] Open
Abstract
Prior research has demonstrated how the endoplasmic reticulum (ER) functions as a multifunctional organelle and as a well-orchestrated protein-folding unit. It consists of sensors which detect stress-induced unfolded/misfolded proteins and it is the place where protein folding is catalyzed with chaperones. During this folding process, an immaculate disulfide bond formation requires an oxidized environment provided by the ER. Protein folding and the generation of reactive oxygen species (ROS) as a protein oxidative byproduct in ER are crosslinked. An ER stress-induced response also mediates the expression of the apoptosis-associated gene C/EBP-homologous protein (CHOP) and death receptor 5 (DR5). ER stress induces the upregulation of tumor necrosis factor-related apoptosis inducing ligand (TRAIL) receptor and opening new horizons for therapeutic research. These findings can be used to maximize TRAIL-induced apoptosis in xenografted mice. This review summarizes the current understanding of the interplay between ER stress and ROS. We also discuss how damage-associated molecular patterns (DAMPs) function as modulators of immunogenic cell death and how natural products and drugs have shown potential in regulating ER stress and ROS in different cancer cell lines. Drugs as inducers and inhibitors of ROS modulation may respectively exert inducible and inhibitory effects on ER stress and unfolded protein response (UPR). Reconceptualization of the molecular crosstalk among ROS modulating effectors, ER stress, and DAMPs will lead to advances in anticancer therapy.
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Affiliation(s)
- Ammad Ahmad Farooqi
- Institute of Biomedical and Genetic Engineering (IBGE), KRL Hospital, Islamabad, Pakistan,
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Bcl-2 associated with severity of manic symptoms in bipolar patients in a manic phase. Psychiatry Res 2015; 225:305-8. [PMID: 25563670 DOI: 10.1016/j.psychres.2014.12.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 11/18/2014] [Accepted: 12/14/2014] [Indexed: 01/26/2023]
Abstract
B cell lymphoma protein-2 (Bcl-2) may contribute to the pathophysiology of bipolar disorder, and may be involved in the therapeutic action of anti-manic drugs. The aim of this study was to investigate serum levels of Bcl-2 in bipolar patients in a manic phase, and evaluate the Bcl-2 changes after treatment. We consecutively enrolled 23 bipolar inpatients in a manic phase and 40 healthy subjects; 20 bipolar patients were followed up with treatment. Serum Bcl-2 levels were measured with assay kits. All 20 patients were evaluated by examining the correlation between Bcl-2 levels and Young Mania Rating Scale (YMRS) scores, using Spearman׳s correlation coefficients. The serum Bcl-2 levels in bipolar patients in a manic phase were higher than in healthy subjects, but without a significant difference. The YMRS scores were significantly negatively associated with serum Bcl-2 levels (p=0.042). Bcl-2 levels of the 20 bipolar patients were measured at the end of treatment. Using the Wilcoxon Signed Rank test, we found no significant difference in the Bcl-2 levels of bipolar patients after treatment. Our results suggest that Bcl-2 levels might be an indicator of severity of manic symptoms in bipolar patients in a manic phase.
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Chou CT, Lin HT, Hwang PA, Wang ST, Hsieh CH, Hwang DF. Taurine resumed neuronal differentiation in arsenite-treated N2a cells through reducing oxidative stress, endoplasmic reticulum stress, and mitochondrial dysfunction. Amino Acids 2014; 47:735-44. [DOI: 10.1007/s00726-014-1901-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 12/11/2014] [Indexed: 11/30/2022]
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Mizoguchi Y, Kato TA, Horikawa H, Monji A. Microglial intracellular Ca(2+) signaling as a target of antipsychotic actions for the treatment of schizophrenia. Front Cell Neurosci 2014; 8:370. [PMID: 25414641 PMCID: PMC4220695 DOI: 10.3389/fncel.2014.00370] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 10/20/2014] [Indexed: 11/18/2022] Open
Abstract
Microglia are resident innate immune cells which release many factors including proinflammatory cytokines, nitric oxide (NO) and neurotrophic factors when they are activated in response to immunological stimuli. Recent reports show that pathophysiology of schizophrenia is related to the inflammatory responses mediated by microglia. Intracellular Ca2+ signaling, which is mainly controlled by the endoplasmic reticulum (ER), is important for microglial functions such as release of NO and cytokines, migration, ramification and deramification. In addition, alteration of intracellular Ca2+ signaling underlies the pathophysiology of schizophrenia, while it remains unclear how typical or atypical antipsychotics affect intracellular Ca2+ mobilization in microglial cells. This mini-review article summarizes recent findings on cellular mechanisms underlying the characteristic differences in the actions of antipsychotics on microglial intracellular Ca2+ signaling and reinforces the importance of the ER of microglial cells as a target of antipsychotics for the treatment of schizophrenia.
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Affiliation(s)
- Yoshito Mizoguchi
- Department of Psychiatry, Faculty of Medicine, Saga University Saga, Japan
| | - Takahiro A Kato
- Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University Fukuoka, Japan ; Innovation Center for Medical Redox Navigation, Kyushu University Fukuoka, Japan
| | - Hideki Horikawa
- Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University Fukuoka, Japan
| | - Akira Monji
- Department of Psychiatry, Faculty of Medicine, Saga University Saga, Japan
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Peng L, Zhang X, Cui X, Zhu D, Wu J, Sun D, Yue Q, Li Z, Liu H, Li G, Zhang J, Xu H, Liu F, Qin C, Li M, Sun J. Paliperidone protects SK-N-SH cells against glutamate toxicity via Akt1/GSK3β signaling pathway. Schizophr Res 2014; 157:120-7. [PMID: 24962437 DOI: 10.1016/j.schres.2014.05.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 05/21/2014] [Accepted: 05/31/2014] [Indexed: 02/04/2023]
Abstract
Schizophrenia is a heterogeneous psychotic illness and its etiology remains poorly understood. Recent studies have suggested that neurodegeneration is a component of schizophrenia pathology and some atypical antipsychotics appear to slow progressive morphological brain changes. In addition, the atypical antipsychotics were reported to have a superior therapeutic efficacy in treating schizophrenia and have a low incidence of extrapyramidal side effects (EPS) compared to typical antipsychotics. However, the mechanisms of atypical antipsychotics in treating schizophrenia and the basis for differences in their clinical effects were still totally unknown. In the present study, we investigated whether paliperidone shows protective effects on SK-N-SH cells from cell toxicity induced by exposure to glutamate. We examined the effects of the drugs on cell viability (measured by MTT metabolism assay and lactate dehydrogenase (LDH) activity assay), apoptosis rate, ROS levels and gene expression and phosphorylation of Akt1 and GSK3β. The results showed that paliperidone significantly increases the cell viability by MTT and LDH assays (p<0.05), in contrast to the typical antipsychotic (haloperidol), which had little neuroprotective activity. Moreover, paliperidone retarded the glutamate-mediated promotion of ROS and the rate of apoptosis (p<0.05). In addition, paliperidone also effectively reversed glutamate-induced decreases of gene expression and phosphorylation of Akt1 and GSK3β (both p<0.05). Our results demonstrated that paliperidone could effectively protect SK-N-SH cells from glutamate-induced damages via Akt1/GSK3β signaling pathway.
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Affiliation(s)
- Lei Peng
- Department of Anatomy and Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Xingzhen Zhang
- Department of Anatomy and Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Xianping Cui
- Department of General Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250012, PR China
| | - Dexiao Zhu
- Department of Anatomy and Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Jintao Wu
- Department of Anatomy and Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Dong Sun
- Experimental Platform for Medical Function, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Qingwei Yue
- Department of Anatomy and Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Zeyan Li
- Department of Anatomy and Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Haili Liu
- Department of Anatomy and Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Guibao Li
- Department of Anatomy and Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Jing Zhang
- Department of Anatomy and Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Hongyan Xu
- Experimental Platform for Medical Function, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Fuchen Liu
- Department of Neurobiology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Chengkun Qin
- Department of General Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250012, PR China
| | - Mingfeng Li
- Department of Neurobiology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Jinhao Sun
- Department of Anatomy and Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China.
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Tobe BTD, Brandel MG, Nye JS, Snyder EY. Implications and limitations of cellular reprogramming for psychiatric drug development. Exp Mol Med 2013; 45:e59. [PMID: 24232258 PMCID: PMC3849573 DOI: 10.1038/emm.2013.124] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 08/28/2013] [Indexed: 12/28/2022] Open
Abstract
Human-induced pluripotent stem cells (hiPSCs) derived from somatic cells of patients have opened possibilities for in vitro modeling of the physiology of neural (and other) cells in psychiatric disease states. Issues in early stages of technology development include (1) establishing a library of cells from adequately phenotyped patients, (2) streamlining laborious, costly hiPSC derivation and characterization, (3) assessing whether mutations or other alterations introduced by reprogramming confound interpretation, (4) developing efficient differentiation strategies to relevant cell types, (5) identifying discernible cellular phenotypes meaningful for cyclic, stress induced or relapsing-remitting diseases, (6) converting phenotypes to screening assays suitable for genome-wide mechanistic studies or large collection compound testing and (7) controlling for variability in relation to disease specificity amidst low sample numbers. Coordination of material for reprogramming from patients well-characterized clinically, genetically and with neuroimaging are beginning, and initial studies have begun to identify cellular phenotypes. Finally, several psychiatric drugs have been found to alter reprogramming efficiency in vitro, suggesting further complexity in applying hiPSCs to psychiatric diseases or that some drugs influence neural differentiation moreso than generally recognized. Despite these challenges, studies utilizing hiPSCs may eventually serve to fill essential niches in the translational pipeline for the discovery of new therapeutics.
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Affiliation(s)
- Brian T D Tobe
- 1] Program in Stem Cell and Regenerative Biology, Sanford-Burnham Medical Research Institute, Burnham Institute for Medical Research, La Jolla, CA, USA [2] Department of Psychiatry, Veterans Administration Medical Center, La Jolla, CA, USA
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Lopez JJ, Palazzo A, Chaabane C, Albarran L, Polidano E, Lebozec K, Dally S, Nurden P, Enouf J, Debili N, Bobe R. Crucial role for endoplasmic reticulum stress during megakaryocyte maturation. Arterioscler Thromb Vasc Biol 2013; 33:2750-8. [PMID: 24115034 DOI: 10.1161/atvbaha.113.302184] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVE Apoptotic-like phase is an essential step for the platelet formation from megakaryocytes. How controlled is this signaling pathway remained poorly understood. The aim of this study was to determine whether endoplasmic reticulum (ER) stress-induced apoptosis occurs during thrombopoiesis. APPROACH AND RESULTS Investigation of ER stress and maturation markers in different models of human thrombopoiesis (CHRF, DAMI, MEG-01 cell lines, and hematopoietic stem cells: CD34(+)) as well as in immature pathological platelets clearly indicated that ER stress occurs transiently during thrombopoiesis. Direct ER stress induction by tunicamycin, an inhibitor of N-glycosylation, or by sarco/endoplasmic reticulum Ca(2+) ATPase type 3b overexpression, which interferes with reticular calcium, leads to some degree of maturation in megakaryocytic cell lines. On the contrary, exposure to salubrinal, a phosphatase inhibitor that prevents eukaryotic translation initiation factor 2α-P dephosphorylation and inhibits ER stress-induced apoptosis, decreased both expression of maturation markers in MEG-01 and CD34(+) cells as well as numbers of mature megakaryocytes and proplatelet formation in cultured CD34(+) cells. CONCLUSIONS Taken as a whole, our research suggests that transient ER stress activation triggers the apoptotic-like phase of the thrombopoiesis process.
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Affiliation(s)
- Jose J Lopez
- From the Inserm U770, Université Paris-Sud, Le Kremlin-Bicêtre, France (J.J.L., C.C., L.A., E.P., S.D., J.E., R.B.); INSERM UMR1009, Institut Gustave Roussy, Université Paris-Sud, Villejuif, France (A.P., K.L., N.D.); and Centre de Référence des Pathologies Plaquettaires, Plateforme Technologique d'Innovation Biomédicale, Hôpital Xavier Arnozan, Pessac, France (P.N.)
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Peng L, Zhu D, Feng X, Dong H, Yue Q, Zhang J, Gao Q, Hao J, Zhang X, Liu Z, Sun J. Paliperidone protects prefrontal cortical neurons from damages caused by MK-801 via Akt1/GSK3β signaling pathway. Schizophr Res 2013; 147:14-23. [PMID: 23583326 DOI: 10.1016/j.schres.2013.03.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 02/14/2013] [Accepted: 03/01/2013] [Indexed: 01/26/2023]
Abstract
Recent studies have suggested that neurodegeneration is involved in the pathogenesis of schizophrenia, and some atypical antipsychotics appear to prevent or retard progressive morphological brain changes. However, the underlying molecular mechanisms are largely unknown. Whether changes in intracellular signaling pathways are related to their neuroprotective effects remains undefined. In the present study, we used mouse embryonic prefrontal cortical neurons to examine the neuroprotection of paliperidone against the neuronal damage induced by exposure to the NMDA receptor antagonist, MK-801. Paliperidone inhibited MK-801 induced neurotoxicity both in MTT metabolism assay (p<0.01) and in lactate dehydrogenase (LDH) activity assay (p<0.01). Time course studies revealed that paliperidone effectively attenuated the elevation of intracellular free calcium concentration ([Ca(2+)]i) induced by exposure to MK-801 (p<0.01). Moreover, paliperidone could significantly retard MK-801-mediated inhibition of neurite outgrowth (p<0.01) and reverse MK-801-induced decreases of gene expression and phosphorylation of Akt1 and GSK3β (both p<0.01). Furthermore, these protective effects of paliperidone were blocked by pretreatment with a PI3K inhibitor LY294002. Taking together, our results demonstrated that paliperidone could protect prefrontal cortical neurons from MK-801-induced damages via Akt1/GSK3β signaling pathway.
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Affiliation(s)
- Lei Peng
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Dexiao Zhu
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Xiaowen Feng
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Haiman Dong
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Qingwei Yue
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Jing Zhang
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Qing Gao
- Department of Histology and Embryology, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Jing Hao
- Department of Histology and Embryology, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Xingzhen Zhang
- Department of Pharmacy, Shandong University School of Pharmacy, Jinan, Shandong 250012, China
| | - Zengxun Liu
- Department of Psychiatry, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Jinhao Sun
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong 250012, China.
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Liu D, Zhang M, Yin H. Signaling pathways involved in endoplasmic reticulum stress-induced neuronal apoptosis. Int J Neurosci 2012; 123:155-62. [PMID: 23134425 DOI: 10.3109/00207454.2012.746974] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
In eukaryotic cells, the endoplasmic reticulum (ER) is a very critical site for synthesis, folding, modification of protein, and calcium homeostasis. The ER responds to factors that perturb ER function such as the accumulation of unfolded proteins (ER stress) by activating unfolded protein response to relieve the stress. However, chronic or unresolved ER stress can induce neuronal apoptosis by activating c-Jun N-terminal kinase (JNK), glycogen synthase kinase 3/3β (GSK3/3β), CAAT/enhancer binding protein homologous protein (CHOP), and caspase-12 pathway. Research related to ER stress will provide therapeutic implications in neurological diseases.
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Affiliation(s)
- Di Liu
- Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
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Effect of atypical antipsychotics on fetal growth: is the placenta involved? J Pregnancy 2012; 2012:315203. [PMID: 22848828 PMCID: PMC3401548 DOI: 10.1155/2012/315203] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 06/18/2012] [Indexed: 01/08/2023] Open
Abstract
There is currently considerable uncertainty regarding prescribing practices for pregnant women with severe and persistent psychiatric disorders. The physician and the mother have to balance the risks of untreated psychiatric illness against the potential fetal toxicity associated with pharmacological exposure. This is especially true for women taking atypical antipsychotics. Although these drugs have limited evidence for teratological risk, there are reports of altered fetal growth, both increased and decreased, with maternal atypical antipsychotic use. These effects may be mediated through changes in the maternal metabolism which in turn impacts placental function. However, the presence of receptors targeted by atypical antipsychotics in cell lineages present in the placenta suggests that these drugs can also have direct effects on placental function and development. The signaling pathways involved in linking the effects of atypical antipsychotics to placental dysfunction, ultimately resulting in altered fetal growth, remain elusive. This paper focuses on some possible pathways which may link atypical antipsychotics to placental dysfunction.
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Effects of 4-weeks of treatment with lithium and olanzapine on long-term potentiation in hippocampal area CA1. Neurosci Lett 2012; 524:5-9. [PMID: 22750162 DOI: 10.1016/j.neulet.2012.06.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 06/12/2012] [Accepted: 06/19/2012] [Indexed: 11/21/2022]
Abstract
Neuroplastic theories propose that lithium has robust neuroprotective and neurotrophic actions leading to the up-regulation of synaptic plasticity, and this action may be associated with the efficacy of lithium in the treatment of bipolar disorder. Olanzapine, an atypical antipsychotic drug, is efficacious in the treatment of bipolar disorder. It has been suggested that olanzapine may also up-regulate synaptic plasticity by its neuroprotective and neurotrophic actions, and this action may be related to antipsychotic and anti-manic effects of the drug. However, few studies have directly examined whether these drugs alter synaptic plasticity. In the present study, to examine the effects of lithium and olanzapine on synaptic plasticity, we examined the effects of chronic treatment with lithium and olanzapine on long-term potentiation (LTP) and input and output (I/O) responses of field excitatory postsynaptic potentials (fEPSP) of CA1 pyramidal cells in hippocampal slices prepared from rats administered the drugs for 4 weeks. Our results show that 4 weeks of lithium treatment magnified LTP of CA1 pyramidal cells. However, the same treatment with olanzapine did not magnify LTP of CA1 pyramidal cells. Four weeks of treatment with lithium did not alter I/O responses of CA1 pyramidal cells. However, the same treatment with olanzapine increased I/O responses of CA1 pyramidal cells. The results suggest that lithium up-regulates synaptic plasticity in the hippocampus, and olanzapine increases synaptic transmission without apparent changes in LTP in the hippocampus.
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Antipsychotic induced alteration of growth and proteome of rat neural stem cells. Neurochem Res 2012; 37:1649-59. [PMID: 22528831 DOI: 10.1007/s11064-012-0768-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 01/19/2012] [Accepted: 03/27/2012] [Indexed: 01/19/2023]
Abstract
Neural stem cells (NSCs) play a crucial role in the development and maturation of the central nervous system and therefore have the potential to target by therapeutic agents for a wide variety of diseases including neurodegenerative and neuropsychiatric illnesses. It has been suggested that antipsychotic drugs have significant effects on NSC activities. However, the molecular mechanisms underlying antipsychotic-induced changes of NSC activities, particularly growth and protein expression, are largely unknown. NSCs were treated with either haloperidol (HD; 3 μM), risperidone (RS; 3 μM) or vehicle (DMSO) for 96 h. Protein expression profiles were studied through a proteomics approach. RS promoted and HD inhibited the growth of NSCs. Proteomics analysis revealed that 15 protein spots identified as 12 unique proteins in HD-, and 20 protein spots identified as 14 proteins in RS-treated groups, were differentially expressed relative to control. When these identified proteins were compared between the two drug-treated groups, 2 proteins overlapped leaving 10 HD-specific and 12 RS-specific proteins. Further comparison of the overlapped altered proteins of 96 h treatment with the neuroleptics-induced overlapped proteins at 24 h time interval (Kashem et al. [40] in Neurochem Int 55:558-565, 2009) suggested that overlapping altered proteins expression at 24 h was decreased (17 proteins i.e. 53 % of total expressed proteins) with the increase of time (96 h) (2 proteins; 8 % of total expressed proteins). This result indicated that at early stage both drugs showed common mode of action but the action was opposite to each other while administration was prolonged. The opposite morphological pattern of cellular growth at 96 h has been associated with dominant expression of oxidative stress and apoptosis cascades in HD, and activation of growth regulating metabolic pathways in RS treated cells. These results may explain RS induced repairing of neural damage caused by a wide variety of neural diseases including schizophrenia.
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Ota A, Nakashima A, Kaneko YS, Mori K, Nagasaki H, Takayanagi T, Itoh M, Kondo K, Nagatsu T, Ota M. Effects of aripiprazole and clozapine on the treatment of glycolytic carbon in PC12 cells. J Neural Transm (Vienna) 2012; 119:1327-42. [PMID: 22392058 DOI: 10.1007/s00702-012-0782-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Accepted: 02/26/2012] [Indexed: 12/11/2022]
Abstract
Aripiprazole is the only atypical antipsychotic drug known to cause the phosphorylation of AMP-activated protein kinase (AMPK) in PC12 cells. However, the molecular mechanisms underlying this phosphorylation in aripiprazole-treated PC12 cells have not yet been clarified. Here, using PC12 cells, we show that these cells incubated for 24 h with aripiprazole at 50 μM and 25 mM glucose underwent a decrease in their NAD⁺/NADH ratio. Aripiprazole suppressed cytochrome c oxidase (COX) activity but enhanced the activities of pyruvate dehydrogenase (PDH), citrate synthase and Complex I. The changes in enzyme activities coincided well with those in NADH, NAD⁺, and NAD⁺/NADH ratio. However, the bioenergetic peril judged by the lowered COX activity might not be accompanied by excessive occurrence of apoptotic cell death in aripiprazole-treated cells, because the mitochondrial membrane potential was not decreased, but rather increased. On the other hand, when PC12 cells were incubated for 24 h with clozapine at 50 μM and 25 mM glucose, the NAD⁺/NADH ratio did not change. Also, the COX activity was decreased; and the PDH activity was enhanced. These results suggest that aripiprazole-treated PC12 cells responded to the bioenergetic peril more effectively than the clozapine-treated ones to return the ATP biosynthesis back toward its ordinary level. This finding might be related to the fact that aripiprazole alone causes phosphorylation of AMPK in PC12 cells.
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Affiliation(s)
- Akira Ota
- Department of Physiology, Fujita Health University School of Medicine, Toyoake 470-1192, Japan.
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Park SW, Lee CH, Lee JG, Kim LW, Shin BS, Lee BJ, Kim YH. Protective effects of atypical antipsychotic drugs against MPP+-induced oxidative stress in PC12 cells. Neurosci Res 2011; 69:283-90. [DOI: 10.1016/j.neures.2011.01.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 12/29/2010] [Accepted: 01/05/2011] [Indexed: 12/31/2022]
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Ishisaka M, Kudo T, Shimazawa M, Kakefuda K, Oyagi A, Hyakkoku K, Tsuruma K, Hara H. Restraint-Induced Expression of Endoplasmic Reticulum Stress-Related Genes in the Mouse Brain. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/pp.2011.21002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Koprivica V, Regardie K, Wolff C, Fernalld R, Murphy JJ, Kambayashi J, Kikuchi T, Jordan S. Aripiprazole protects cortical neurons from glutamate toxicity. Eur J Pharmacol 2011; 651:73-6. [DOI: 10.1016/j.ejphar.2010.10.064] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2009] [Revised: 10/19/2010] [Accepted: 10/31/2010] [Indexed: 10/18/2022]
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Ono T, Hashimoto E, Ukai W, Ishii T, Saito T. The role of neural stem cells for in vitro models of schizophrenia: neuroprotection via Akt/ERK signal regulation. Schizophr Res 2010; 122:239-47. [PMID: 20627457 DOI: 10.1016/j.schres.2010.05.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2009] [Revised: 05/05/2010] [Accepted: 05/06/2010] [Indexed: 01/06/2023]
Abstract
Recent neuroimaging studies have revealed progressive morphological brain changes during the course of schizophrenia, and the neurotrophic and neurogenetic effects of atypical antipsychotics are believed to prevent or retard these brain volume reductions. In addition to drug-induced neural stem cell (NSC) activation, transplantation of exogenous NSCs has been proposed as a possible approach to repair the damaged brain in psychiatric disease. NSC transplantation embraces not only neuron replacement but also enhanced neuroprotection of existing neurons with the goal of restoring the impaired brain. However, little is known about the cell-cell interactions of exogenous NSCs with existing neurons, or about their neuroprotective actions especially in psychiatric diseases. In the present study, we used cortical neuron cultures to examine the neurotrophism and neuroprotection of exogenous NSCs against the neuronal damage induced by exposure to the NMDA receptor antagonist, MK-801. We also investigated their role in serum/nutrient deprivation stress. The exogenous NSCs exerted neuroprotective effects against both types of apoptotic injuries considered as in vitro schizophrenic disease models. Exogenous NSCs also altered cellular survival signaling in injured neurons by indirect cell-cell contact in an injury-dependent manner. In MK-801 exposure, NSCs increased phosphorylated Akt (p-Akt) and ERK (p-ERK), both of which were reduced by this stress. While, in serum/nutrient deprivation, NSCs increased p-Akt, but decreased p-ERK which was increased by this damage. Our results demonstrate that exogenous NSCs have anti-apoptotic activities and can rescue cortical neurons by directing cellular survival signaling of neurons into the proper direction, without cell contact.
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Affiliation(s)
- Takafumi Ono
- Department of Neuropsychiatry, School of Medicine, Sapporo Medical University, South-1, West-16, Chuo-ku, Sapporo 0608543, Japan.
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Lee JG, Cho HY, Park SW, Seo MK, Kim YH. Effects of olanzapine on brain-derived neurotrophic factor gene promoter activity in SH-SY5Y neuroblastoma cells. Prog Neuropsychopharmacol Biol Psychiatry 2010; 34:1001-6. [PMID: 20546816 DOI: 10.1016/j.pnpbp.2010.05.013] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2010] [Revised: 04/22/2010] [Accepted: 05/11/2010] [Indexed: 12/17/2022]
Abstract
PURPOSE Atypical antipsychotics have neuroprotective effects, which may be one of the mechanisms for their success in the treatment of schizophrenia. Growing evidence suggest that brain-derived neurotrophic factor (BDNF) is abnormally regulated in patients with schizophrenia, and its expression can be up-regulated by atypical antipsychotics. Atypical antipsychotic drugs may positively regulate transcription of the BDNF gene, but the molecular mechanism of atypical antipsychotic drug action on BDNF gene activity has not been investigated. The aim of the present study was to explore the possible involvement of some intracellular signaling pathways in olanzapine action on BDNF promoter activity. METHODS We examined the effects of olanzapine on BDNF gene promoter activity in SH-SY5Y cells transfected with a rat BDNF promoter fragment (-108 to +340) linked to the luciferase reporter gene. The changes in glycogen synthase kinase-3beta (GSK-3beta) and cAMP response element (CRE) binding protein (CREB) phosphorylation were measured by Western blot analysis. RESULTS Olanzapine treatment (10-100 microM) increased basal BDNF gene promoter activity in a dose-dependent manner and increased protein levels at high dose, and inhibitors of protein kinase A (PKA), H-89 (10 microM), phosphatidylinositol 3-kinase (PI3K), wortmannin (0.01 microM), PKC (protein kinase C), GF109203 (10 microM), calcium/calmodulin kinase II (CaMKII), and KN-93 (20 microM) partially attenuated the stimulatory effect of olanzapine on BDNF promoter activity. In line with these results, a Western blot study showed that olanzapine (100 microM) increased phosphorylated levels of GSK-3beta and CREB, which are notable downstream effectors of the PKA, PI3K, PKC, and CaMKII signaling pathways. CONCLUSIONS These results demonstrate that the up-regulation of olanzapine on BDNF gene transcription is linked with enhancement of CREB-mediated transcription via PKA, PI3K, PKC, and CaMKII signaling pathways, and olanzapine may exert neuroprotective effects through these signaling pathways in neuronal cells.
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Affiliation(s)
- Jung Goo Lee
- Paik Institute for Clinical Research, Inje University, Busan, Republic of Korea
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Dally S, Corvazier E, Bredoux R, Bobe R, Enouf J. Multiple and diverse coexpression, location, and regulation of additional SERCA2 and SERCA3 isoforms in nonfailing and failing human heart. J Mol Cell Cardiol 2010; 48:633-44. [DOI: 10.1016/j.yjmcc.2009.11.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Revised: 11/02/2009] [Accepted: 11/22/2009] [Indexed: 11/27/2022]
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Hammonds MD, Shim SS. Effects of 4-week Treatment with Lithium and Olanzapine on Levels of Brain-derived Neurotrophic Factor, B-Cell CLL/Lymphoma 2 and Phosphorylated Cyclic Adenosine Monophosphate Response Element-binding Protein in the Sub-regions of the Hippocampus. Basic Clin Pharmacol Toxicol 2009; 105:113-9. [DOI: 10.1111/j.1742-7843.2009.00416.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Ma D, Chan MK, Lockstone HE, Pietsch SR, Jones DNC, Cilia J, Hill MD, Robbins MJ, Benzel IM, Umrania Y, Guest PC, Levin Y, Maycox PR, Bahn S. Antipsychotic Treatment Alters Protein Expression Associated with Presynaptic Function and Nervous System Development in Rat Frontal Cortex. J Proteome Res 2009; 8:3284-97. [DOI: 10.1021/pr800983p] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Dan Ma
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Man K. Chan
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Helen E. Lockstone
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Sandra R. Pietsch
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Declan N. C. Jones
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Jackie Cilia
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Mark D. Hill
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Melanie J. Robbins
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Isabel M. Benzel
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Yagnesh Umrania
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Paul C. Guest
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Yishai Levin
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Peter R. Maycox
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
| | - Sabine Bahn
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, U.K., and Psychiatry CEDD, New Frontiers Science Park, GlaxoSmithKline, Third Avenue, Harlow, CM19 5AW, U.K
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Kashem MA, Ummehany R, Ukai W, Hashimoto E, Saito T, Mcgregor IS, Matsumoto I. Effects of typical (haloperidol) and atypical (risperidone) antipsychotic agents on protein expression in rat neural stem cells. Neurochem Int 2009; 55:558-65. [PMID: 19463880 DOI: 10.1016/j.neuint.2009.05.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Revised: 05/08/2009] [Accepted: 05/11/2009] [Indexed: 11/17/2022]
Abstract
Neural stem cells (NSCs) play a crucial role in the development and maturation of the central nervous system. Recently studies suggest that antipsychotic drugs regulate the activities of NSCs. However, the molecular mechanisms underlying antipsychotic-induced changes of the activity of NSCs, particularly protein expression, are still unknown. We studied the growth and protein expression in haloperidol (HD) and risperidone (RS) treated rat NSCs. The treatment with RS (3microM) or HD (3microM) had no effect on morphology of NSCs after 24h, but significantly promotes or inhibits the differentiation of NSCs after a 96h of treatment. 2-DE based proteomics was performed at 24h, a stage before phenotypic expression of NSCs. Gel image analysis revealed that 30 protein spots in HD- and 60 spots in RS-treated groups were differentially regulated in their expression compared to control group (p<0.05; ANOVA). When these spots were compared between the two drug-treated groups, 23 spots overlapped leaving 7 HD-specific and 37 RS-specific spots. Of these 67 spots, 32 different proteins were identified. The majority of the differentially regulated proteins were classified into several functional groups, such as cytoskeletal, calcium regulating protein, metabolism, signal transduction and proteins related to oxidative stress. Our data shows that atypical RS expressed more proteins than typical HD, and these results might explain the molecular mechanisms underlying the different effects of both drugs on NSCs activities as described above. Identified proteins in this experiment may be useful in future studies of NSCs differentiation and/or understanding in molecular mechanisms of different neural diseases including schizophenia.
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Pallet N, Bouvier N, Beaune P, Legendre C, Thervet E, Anglicheau D. [Endoplasmic reticulum stress in kidney diseases: a question of life and death?]. Nephrol Ther 2008; 5:173-80. [PMID: 19071081 DOI: 10.1016/j.nephro.2008.10.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2008] [Revised: 10/17/2008] [Accepted: 10/18/2008] [Indexed: 02/06/2023]
Abstract
Increasing our understanding of the cellular and molecular mechanisms of acute and chronic kidney diseases will lead to the development of new biomarkers of early kidney injury and to the discovery of new therapeutic strategies to prevent the initiation of renal failure or to promote the renal regeneration after injury. The implication of the endoplasmic reticulum stress in kidney diseases is not well recognized, but increasing experimental evidences suggest its implication in a wide array of kidney insults. Beside its role in the regulation of cell death, the UPR response induced by the endoplasmic reticulum stress alters many cellular functions and constitutes an important mediator of inflammation and/or epithelial to mesenchymal transition. The purpose of this review is to summarize the existing data concerning the role of the endoplasmic reticulum stress during kidney injury and to clarify its precise role in chronic kidney disease.
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Affiliation(s)
- Nicolas Pallet
- Inserm U775, centre universitaire des Saints-Pères, université Paris Descartes, 45, rue des Saints-Pères, 75006 Paris, France.
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Pallet N, Bouvier N, Bendjallabah A, Rabant M, Flinois JP, Hertig A, Legendre C, Beaune P, Thervet E, Anglicheau D. Cyclosporine-induced endoplasmic reticulum stress triggers tubular phenotypic changes and death. Am J Transplant 2008; 8:2283-96. [PMID: 18785955 DOI: 10.1111/j.1600-6143.2008.02396.x] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The molecular mechanisms by which cyclosporine induces chronic nephrotoxicity remain poorly understood. A previous transcriptomic study suggested that cyclosporine might induce endoplasmic reticulum (ER) stress in human tubular cells. The aim of the present study was to characterize the features of tubular ER stress induced by cyclosporine and to investigate its effects on cell differentiation and viability. Using primary cultures of human tubular cells, we confirmed that cyclosporine is responsible for ER stress in vitro. This was also confirmed in vivo in the rat. In vitro, cyclosporine and other ER stress inducers were responsible for epithelial phenotypic changes leading to the generation of protomyofibroblasts, independent of transforming growth factor-beta signaling. RNA interference directed against cyclophilin A supported the role of its inhibition in triggering ER stress as well as epithelial phenotypic changes induced by cyclosporine. Salubrinal, which is known to protect cells from ER stress, significantly reduced epithelial phenotypic changes and cytotoxicity induced by cyclosporine in vitro. Salubrinal also reduced cyclosporine nephrotoxicity in rat kidneys. Thus, we describe a novel mechanism that initiates dedifferentiation and tubular cell death upon cyclosporine treatment. These results provide an interesting framework for further nephroprotective therapies by targeting ER stress.
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Affiliation(s)
- N Pallet
- INSERM U775, Université Paris Descartes, Centre Universitaire des Saints-Pères, Paris, France.
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