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Żabińska M, Wiśniewska K, Węgrzyn G, Pierzynowska K. Exploring the physiological role of the G protein-coupled estrogen receptor (GPER) and its associations with human diseases. Psychoneuroendocrinology 2024; 166:107070. [PMID: 38733757 DOI: 10.1016/j.psyneuen.2024.107070] [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: 01/16/2024] [Revised: 04/15/2024] [Accepted: 05/05/2024] [Indexed: 05/13/2024]
Abstract
Estrogen is a group of hormones that collaborate with the nervous system to impact the overall well-being of all genders. It influences many processes, including those occurring in the central nervous system, affecting learning and memory, and playing roles in neurodegenerative diseases and mental disorders. The hormone's action is mediated by specific receptors. Significant roles of classical estrogen receptors, ERα and ERβ, in various diseases were known since many years, but after identifying a structurally and locationally distinct receptor, the G protein-coupled estrogen receptor (GPER), its role in human physiology and pathophysiology was investigated. This review compiles GPER-related information, highlighting its impact on homeostasis and diseases, while putting special attention on functions and dysfunctions of this receptor in neurobiology and biobehavioral processes. Understanding the receptor modulation possibilities is essential for therapy, as disruptions in receptors can lead to diseases or disorders, irrespective of correct estrogen levels. We conclude that studies on the GPER receptor have the potential to develop therapies that regulate estrogen and positively impact human health.
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Affiliation(s)
- Magdalena Żabińska
- Department of Molecular Biology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, Gdansk 80-308, Poland
| | - Karolina Wiśniewska
- Department of Molecular Biology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, Gdansk 80-308, Poland
| | - Grzegorz Węgrzyn
- Department of Molecular Biology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, Gdansk 80-308, Poland
| | - Karolina Pierzynowska
- Department of Molecular Biology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, Gdansk 80-308, Poland.
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Poitras M, Doiron A, Plamondon H. Selective estrogen receptor activation prior to global cerebral ischemia in female rats impacts microglial activation and anxiety-like behaviors without effects on CA1 neuronal injury. Behav Brain Res 2024; 470:115094. [PMID: 38844057 DOI: 10.1016/j.bbr.2024.115094] [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: 04/16/2024] [Revised: 06/03/2024] [Accepted: 06/03/2024] [Indexed: 06/10/2024]
Abstract
Estrogen receptor (ER) activation by 17-ß estradiol (E2) can attenuate neuronal injury and behavioral impairments following global cerebral ischemia (GCI) in rodents. This study sought to further examine the discrete roles of ERs through characterization of the effects of selective ER activation on post-ischemic pro-inflammatory microglial activation, hippocampal neuronal injury, and anxiety-like behaviors. Forty-six ovariectomized (OVX) adult female Wistar rats received daily s.c injections (100 μg/kg/day) of propylpyrazole triol (PPT; ERα agonist), diarylpropionitrile (DPN; ERβ agonist), G-1 (G-protein coupled ER agonist; GPER), E2 (activating all receptors), or vehicle solution (VEH) for 21 days. After final injection, rats underwent GCI via 4-vessel occlusion (n=8 per group) or sham surgery (n=6, vehicle injections). The Open Field Test (OFT), Elevated Plus Maze (EPM), and Hole Board Test (HBT) assessed anxiety-like behaviors. Microglial activation (Iba1, CD68, CD86) in the basolateral amygdala (BLA), CA1 of the hippocampus, and paraventricular nucleus of the hypothalamus (PVN) was determined 8 days post-ischemia. Compared to sham rats, Iba1 activation and CA1 neuronal injury were increased in all ischemic groups except DPN-treated rats, with PPT-treated ischemic rats also showing increased PVN Iba1-ir expression. Behaviorally, VEH ischemic rats showed slightly elevated anxiety in the EPM compared to sham counterparts, with no significant effects of agonists. While no changes were observed in the OFT, emotion regulation via grooming in the HBT was increased in G-1 rats compared to E2 rats. Our findings support selective ER activation to regulate post-ischemic microglial activation and coping strategies in the HBT, despite minimal impact on hippocampal injury.
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Affiliation(s)
- Marilou Poitras
- Cerebro Vascular Accidents and Behavioral Recovery Laboratory, School of Psychology, University of Ottawa, Ottawa, Canada
| | - Alexandra Doiron
- Cerebro Vascular Accidents and Behavioral Recovery Laboratory, School of Psychology, University of Ottawa, Ottawa, Canada
| | - Hélène Plamondon
- Cerebro Vascular Accidents and Behavioral Recovery Laboratory, School of Psychology, University of Ottawa, Ottawa, Canada.
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Mbara KC, Fotsing MC, Ndinteh DT, Mbeb CN, Nwagwu CS, Khan R, Mokhetho KC, Baijnath H, Nlooto M, Mokhele S, Leonard CM, Tembu VJ, Tarirai C. Endoplasmic reticulum stress in pancreatic β-cell dysfunction: The potential therapeutic role of dietary flavonoids. CURRENT RESEARCH IN PHARMACOLOGY AND DRUG DISCOVERY 2024; 6:100184. [PMID: 38846008 PMCID: PMC11153890 DOI: 10.1016/j.crphar.2024.100184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 06/09/2024] Open
Abstract
Diabetes mellitus (DM) is a global health burden that is characterized by the loss or dysfunction of pancreatic β-cells. In pancreatic β-cells, endoplasmic reticulum (ER) stress is a fact of life that contributes to β-cell loss or dysfunction. Despite recent advances in research, the existing treatment approaches such as lifestyle modification and use of conventional therapeutics could not prevent the loss or dysfunction of pancreatic β-cells to abrogate the disease progression. Therefore, targeting ER stress and the consequent unfolded protein response (UPR) in pancreatic β-cells may be a potential therapeutic strategy for diabetes treatment. Dietary phytochemicals have therapeutic applications in human health owing to their broad spectrum of biochemical and pharmacological activities. Flavonoids, which are commonly obtained from fruits and vegetables worldwide, have shown promising prospects in alleviating ER stress. Dietary flavonoids including quercetin, kaempferol, myricetin, isorhamnetin, fisetin, icariin, apigenin, apigetrin, vitexin, baicalein, baicalin, nobiletin hesperidin, naringenin, epigallocatechin 3-O-gallate hesperidin (EGCG), tectorigenin, liquiritigenin, and acacetin have shown inhibitory effects on ER stress in pancreatic β-cells. Dietary flavonoids modulate ER stress signaling components, chaperone proteins, transcription factors, oxidative stress, autophagy, apoptosis, and inflammatory responses to exert their pharmacological effects on pancreatic β-cells ER stress. This review focuses on the role of dietary flavonoids as potential therapeutic adjuvants in preserving pancreatic β-cells from ER stress. Highlights of the underlying mechanisms of action are also presented as well as possible strategies for clinical translation in the management of DM.
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Affiliation(s)
- Kingsley C. Mbara
- Nanomedicines Manufacturing, Biopharmaceutics and Diagnostics Research Laboratory, Department of Pharmaceutical Sciences, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Marthe C.D. Fotsing
- Drug Discovery and Smart Molecules Research Laboratory, Centre for Natural Products Research (CNPR), Department of Chemical Sciences, University of Johannesburg, Doornfontein, Johannesburg, 2028, South Africa
| | - Derek T. Ndinteh
- Drug Discovery and Smart Molecules Research Laboratory, Centre for Natural Products Research (CNPR), Department of Chemical Sciences, University of Johannesburg, Doornfontein, Johannesburg, 2028, South Africa
| | - Claudine N. Mbeb
- Nanomedicines Manufacturing, Biopharmaceutics and Diagnostics Research Laboratory, Department of Pharmaceutical Sciences, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Chinekwu S. Nwagwu
- Drug Delivery and Nanomedicines Research Laboratory, Department of Pharmaceutics, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Rene Khan
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban, South Africa
| | - Kopang C. Mokhetho
- Nanomedicines Manufacturing, Biopharmaceutics and Diagnostics Research Laboratory, Department of Pharmaceutical Sciences, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Himansu Baijnath
- Ward Herbarium, School of Life Sciences, University of KwaZulu-Natal, Durban, 4000, KwaZulu-Natal, South Africa
| | - Manimbulu Nlooto
- Department of Pharmaceutical Sciences, Healthcare Sciences, University of Limpopo, South Africa
| | - Shoeshoe Mokhele
- Department of Pharmaceutical Sciences, School of Pharmacy, Sefako Makgatho Health Sciences University, Pretoria, 0208, South Africa
| | - Carmen M. Leonard
- Nanomedicines Manufacturing, Biopharmaceutics and Diagnostics Research Laboratory, Department of Pharmaceutical Sciences, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Vuyelwa J. Tembu
- Natural Products Chemistry Research Laboratory, Department of Chemistry, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Clemence Tarirai
- Nanomedicines Manufacturing, Biopharmaceutics and Diagnostics Research Laboratory, Department of Pharmaceutical Sciences, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
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Dong X, Li C, Yao Y, Liu F, Jiang P, Gao Y. Xingnaojing injection alleviates cerebral ischemia/reperfusion injury through regulating endoplasmic reticulum stress in Vivo and in Vitro. Heliyon 2024; 10:e25267. [PMID: 38327400 PMCID: PMC10847655 DOI: 10.1016/j.heliyon.2024.e25267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 01/23/2024] [Accepted: 01/23/2024] [Indexed: 02/09/2024] Open
Abstract
Background Xingnaojing (XNJ) injection, an extract derived from traditional Chinese medicine, is commonly used to treat ischemic stroke (IS). Previous studies have shown that XNJ has the ability to alleviate apoptosis in cerebral ischemia-reperfusion injury. However, the potential mechanisms have not been clarified. Objective To identify the neuroprotective effect of XNJ and explore whether XNJ inhibits cell apoptosis associated with endoplasmic reticulum stress (ERS) after IS. Methods In this study, cultured hippocampal neurons from mouse embryos and Sprague-Dawley rats were assigned randomly to four groups: sham, model, XNJ, and edaravone. The treatment groups were administered 2 h after modelling. Neurological deficit scores and motor performance tests were performed after 24 h of modelling. Additionally, pathomorphology, cell apoptosis and calcium content were evaluated. To ascertain the expression of ERS proteins, western blotting and polymerase chain reaction were employed. Results The results indicated that XNJ treatment resulted in a notable decrease in infarct volume, apoptosis and missteps compared with the model group. XNJ also exhibited improvements in neurological function, grip strength and motor time. The calcium content significantly reduced in XNJ group. The XNJ administration resulted in a reduction in the levels of proteins associated with ERS including CHOP, GRP78, Bax, caspase-12, caspase-9, and cleaved-caspase-3, but an increase of the Bcl-2/Bax ratio. Furthermore, the downregulation of mRNA expression of CHOP, GRP78, caspase-12, caspase-9, and caspase-3 was confirmed in both cultured neurons and rat model. Conclusion These findings suggest that XNJ may alleviate apoptosis by modulating the ERS-induced apoptosis pathway, making it a potential novel therapeutic approach for ischemic stroke.
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Affiliation(s)
- Xinglu Dong
- Department of Neurology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Chuanpeng Li
- Department of Neurology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China
- Chinese Medicine Key Research Room of Brain Disorders Syndrome and Treatment of the National Administration of Traditional Chinese Medicine, Beijing, China
| | - Yaoyao Yao
- Department of Neurology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China
- Chinese Medicine Key Research Room of Brain Disorders Syndrome and Treatment of the National Administration of Traditional Chinese Medicine, Beijing, China
| | - Fengzhi Liu
- Department of Neurology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China
- Chinese Medicine Key Research Room of Brain Disorders Syndrome and Treatment of the National Administration of Traditional Chinese Medicine, Beijing, China
| | - Ping Jiang
- Department of Neurology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Ying Gao
- Department of Neurology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China
- Chinese Medicine Key Research Room of Brain Disorders Syndrome and Treatment of the National Administration of Traditional Chinese Medicine, Beijing, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
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Li N, Duan YH, Chen L, Zhang K. Iron metabolism: An emerging therapeutic target underlying the anti-Alzheimer's disease effect of ginseng. J Trace Elem Med Biol 2023; 79:127252. [PMID: 37418790 DOI: 10.1016/j.jtemb.2023.127252] [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: 08/16/2022] [Revised: 06/05/2023] [Accepted: 06/22/2023] [Indexed: 07/09/2023]
Abstract
Finding neuroprotective drugs with fewer side effects and more efficacy has become a major problem as the global prevalence of Alzheimer's disease (AD) rises. Natural drugs have risen to prominence as potential medication candidates. Ginseng has a long history of use in China, and it has a wide range of pharmacological actions that can help with neurological issues. Iron loaded in the brain has been linked to AD pathogenesis. We reviewed the regulation of iron metabolism and its studies in AD and explored how ginseng might regulate iron metabolism and prevent or treat AD. Researchers utilized network pharmacology analysis to identify key factive components of ginseng that protect against AD by regulating ferroptosis. Ginseng and its active ingredients may benefit AD by regulating iron metabolism and targeting ferroptosis genes to inhibit the ferroptosis process. The results present new ideas for ginseng pharmacological studies and initiatives for further research into AD-related drugs. To provide comprehensive information on the neuroprotective use of ginseng to modulate iron metabolism, reveal its potential to treat AD, and provide insights for future research opportunities.
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Affiliation(s)
- Nan Li
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, China
| | - Yu-Han Duan
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, China
| | - Lei Chen
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, China
| | - Kun Zhang
- Department of Medical Research Center, The Second Hospital of Jilin University, Changchun, China.
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Prossnitz ER, Barton M. The G protein-coupled oestrogen receptor GPER in health and disease: an update. Nat Rev Endocrinol 2023:10.1038/s41574-023-00822-7. [PMID: 37193881 DOI: 10.1038/s41574-023-00822-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/28/2023] [Indexed: 05/18/2023]
Abstract
Oestrogens and their receptors contribute broadly to physiology and diseases. In premenopausal women, endogenous oestrogens protect against cardiovascular, metabolic and neurological diseases and are involved in hormone-sensitive cancers such as breast cancer. Oestrogens and oestrogen mimetics mediate their effects via the cytosolic and nuclear receptors oestrogen receptor-α (ERα) and oestrogen receptor-β (ERβ) and membrane subpopulations as well as the 7-transmembrane G protein-coupled oestrogen receptor (GPER). GPER, which dates back more than 450 million years in evolution, mediates both rapid signalling and transcriptional regulation. Oestrogen mimetics (such as phytooestrogens and xenooestrogens including endocrine disruptors) and licensed drugs such as selective oestrogen receptor modulators (SERMs) and downregulators (SERDs) also modulate oestrogen receptor activity in both health and disease. Following up on our previous Review of 2011, we herein summarize the progress made in the field of GPER research over the past decade. We will review molecular, cellular and pharmacological aspects of GPER signalling and function, its contribution to physiology, health and disease, and the potential of GPER to serve as a therapeutic target and prognostic indicator of numerous diseases. We also discuss the first clinical trial evaluating a GPER-selective drug and the opportunity of repurposing licensed drugs for the targeting of GPER in clinical medicine.
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Affiliation(s)
- Eric R Prossnitz
- Department of Internal Medicine, Division of Molecular Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
- Center of Biomedical Research Excellence in Autophagy, Inflammation and Metabolism, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
- University of New Mexico Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
| | - Matthias Barton
- Molecular Internal Medicine, University of Zürich, Zürich, Switzerland.
- Andreas Grüntzig Foundation, Zürich, Switzerland.
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Arterburn JB, Prossnitz ER. G Protein-Coupled Estrogen Receptor GPER: Molecular Pharmacology and Therapeutic Applications. Annu Rev Pharmacol Toxicol 2023; 63:295-320. [PMID: 36662583 PMCID: PMC10153636 DOI: 10.1146/annurev-pharmtox-031122-121944] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The actions of estrogens and related estrogenic molecules are complex and multifaceted in both sexes. A wide array of natural, synthetic, and therapeutic molecules target pathways that produce and respond to estrogens. Multiple receptors promulgate these responses, including the classical estrogen receptors of the nuclear hormone receptor family (estrogen receptors α and β), which function largely as ligand-activated transcription factors, and the 7-transmembrane G protein-coupled estrogen receptor, GPER, which activates a diverse array of signaling pathways. The pharmacology and functional roles of GPER in physiology and disease reveal important roles in responses to both natural and synthetic estrogenic compounds in numerous physiological systems. These functions have implications in the treatment of myriad disease states, including cancer, cardiovascular diseases, and metabolic disorders. This review focuses on the complex pharmacology of GPER and summarizes major physiological functions of GPER and the therapeutic implications and ongoing applications of GPER-targeted compounds.
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Affiliation(s)
- Jeffrey B Arterburn
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico, USA
- University of New Mexico Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, New Mexico, USA;
| | - Eric R Prossnitz
- University of New Mexico Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, New Mexico, USA;
- Center of Biomedical Research Excellence in Autophagy, Inflammation and Metabolism, and Division of Molecular Medicine, Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico, USA
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Wu Y, Fan X, Chen S, Deng L, Jiang L, Yang S, Dong Z. Geraniol-Mediated Suppression of Endoplasmic Reticulum Stress Protects against Cerebral Ischemia-Reperfusion Injury via the PERK-ATF4-CHOP Pathway. Int J Mol Sci 2022; 24:ijms24010544. [PMID: 36613992 PMCID: PMC9820715 DOI: 10.3390/ijms24010544] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/19/2022] [Accepted: 09/28/2022] [Indexed: 12/31/2022] Open
Abstract
Endoplasmic reticulum (ER) stress plays an important role in cerebral ischemia-reperfusion injury (CIRI). Geraniol has antioxidant, antibacterial, and anti-inflammatory activities. Studies have shown that geraniol has a protective effect against CIRI in rats, but the exact mechanism is unclear. Purpose: The aim of this study was to investigate the protective mechanism of geraniol against CIRI. We established a middle cerebral artery occlusion reperfusion model in rats and a PC12 cell oxygen-glucose deprivation/reoxygenation (OGD/R) model to observe the neuroprotective effects of geraniol. Neurological scoring, 2,3,5-triphenyltetrazolium chloride staining, and hematoxylin and eosin staining were used to evaluate the neuroprotective effects of geraniol against CIRI. ER-stress-related and apoptosis-related protein expression was detected via Western blotting and immunofluorescence. Apoptosis was also detected via TUNEL assays and flow cytometry. The fluorescent detection of intracellular calcium was achieved using fluorescent calcium-binding dyes, and transmission electron microscopy was used to assess the neuronal ultrastructure. Geraniol effectively attenuated cerebral infarction and pathological injury after CIRI, had a protective effect against CIRI, significantly reduced the expression of the ER-stress-related proteins P-PERK, ATF4, CHOP, and GRP78 and the pro-apoptotic protein BAX, increased the expression of the anti-apoptotic protein BCL-2, and reduced the occurrence of apoptosis. In the OGD/R model in PC12 cells, the protective effect of geraniol was the same as that in vivo. Our results suggest that geraniol has a protective effect against ischemic stroke by a mechanism possibly related to ER stress via the PERK-ATF4-CHOP pathway.
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Affiliation(s)
| | | | | | | | | | | | - Zhi Dong
- Correspondence: ; Tel.: +86-135-0839-3231
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Epimedin B exerts neuroprotective effect against MPTP-induced mouse model of Parkinson's disease: GPER as a potential target. Biomed Pharmacother 2022; 156:113955. [DOI: 10.1016/j.biopha.2022.113955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022] Open
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Zhang Y, Chen RW, Liu X, Zhu M, Li Z, Wang A, Li X. Oxidative stress, apoptosis, and transcriptional responses in Acropora microphthalma under simulated diving activities. MARINE POLLUTION BULLETIN 2022; 183:114084. [PMID: 36058177 DOI: 10.1016/j.marpolbul.2022.114084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/16/2022] [Accepted: 08/21/2022] [Indexed: 06/15/2023]
Abstract
This study simulated the effects of diving activities on the physiology, enzymatic, and transcriptional responses of Acropora microphthalma. Touching had less impact on Fv/Fm, but a few zooxanthellae were decreased and minor MDA was elevated. Caspase 3 was activated to remove damaged cells, and SOD was increased to alleviate oxidative damage. Under double or triple diving stress, we observed mass loss of zooxanthellae and Fv/Fm, a significant increase in MDA, and SOD, CAT was activated in response to oxidative stress. Transcriptome analyses showed that corals activated immune signaling pathways, anti-oxidation pathways, lysosomal, phagosomal, and cellular autophagy pathways to manage oxidation stress. Moreover, it up-regulated carbohydrate metabolisms, as well as lipopolysaccharide metabolism, glycosphingolipid biosynthesis, photorespiration, amino acid metabolism, and fatty acid beta-oxidation, but down-regulated fatty acid biosynthesis to answer energy insufficiency. This research supported that even in a short time, improper diving activities could have a serious impact on coral health.
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Affiliation(s)
- Yu Zhang
- College of Marine Science, Hainan University, Haikou, China
| | - Rou-Wen Chen
- College of Marine Science, Hainan University, Haikou, China.
| | - Xiangbo Liu
- College of Marine Science, Hainan University, Haikou, China
| | - Ming Zhu
- College of Marine Science, Hainan University, Haikou, China
| | - Zhuoran Li
- College of Marine Science, Hainan University, Haikou, China
| | - Aimin Wang
- College of Marine Science, Hainan University, Haikou, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
| | - Xiubao Li
- College of Marine Science, Hainan University, Haikou, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China.
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Gohar EY, Almutlaq RN, Fan C, Balkawade RS, Butt MK, Curtis LM. Does G Protein-Coupled Estrogen Receptor 1 Contribute to Cisplatin-Induced Acute Kidney Injury in Male Mice? Int J Mol Sci 2022; 23:ijms23158284. [PMID: 35955435 PMCID: PMC9368456 DOI: 10.3390/ijms23158284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/18/2022] [Accepted: 07/21/2022] [Indexed: 12/04/2022] Open
Abstract
Nephrotoxicity is the dose-limiting side-effect of the chemotherapeutic agent cisplatin (Cp). Recent evidence points to renal protective actions of G protein-coupled estrogen receptor 1 (GPER1). In addition, it has been shown that GPER1 signaling elicits protective actions against acute ischemic injuries that involve multiple organ systems; however, the involvement of GPER1 signaling in Cp-induced acute kidney injury (AKI) remains unclear. This study tested whether genetic deletion of GPER1 exacerbates Cp-induced AKI in male mice. We subjected male mice, homozygous (homo) and heterozygous (het) knockout for the GPER1 gene, and wild-type (WT) littermates to Cp or saline injections and assessed markers for renal injury on the third day after injections. We also determined serum levels of proinflammatory markers in saline and Cp-treated mice. Given the protective role of heme oxygenase-1 (HO-1) in Cp-mediated apoptosis, we also investigated genotypic differences in renal HO-1 abundance, cell death, and proliferation by Western blotting, the TUNEL assay, and Ki67 immunostaining, respectively. Cp increased serum creatinine, urea, and neutrophil gelatinase-associated lipocalin (NGAL) levels, the renal abundance of kidney injury molecule-1, and NGAL in all groups. Cp-induced AKI resulted in comparable histological evidence of injury in all genotypes. WT and homo mice showed greater renal HO-1 abundance in response to Cp. Renal HO-1 abundance was lower in Cp-treated homo, compared to Cp-treated WT mice. Of note, GPER1 deletion elicited a remarkable increase in renal apoptosis; however, no genotypic differences in cell proliferation were observed. Cp augmented kidney Ki67-positive counts, regardless of the genotype. Overall, our data do not support a role for GPER1 in mediating Cp-induced renal injury. GPER1 deletion promotes renal apoptosis and diminishes HO-1 induction in response to Cp, suggesting that GPER1 may play cytoprotective and anti-apoptotic actions in AKI. GPER1-induced regulation of HO-1 and apoptosis may offer novel therapeutic targets for the treatment of AKI.
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Affiliation(s)
- Eman Y. Gohar
- Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Correspondence: ; Tel.: +1-615-875-0623
| | - Rawan N. Almutlaq
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (R.N.A.); (C.F.); (R.S.B.); (M.K.B.); (L.M.C.)
| | - Chunlan Fan
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (R.N.A.); (C.F.); (R.S.B.); (M.K.B.); (L.M.C.)
| | - Rohan S. Balkawade
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (R.N.A.); (C.F.); (R.S.B.); (M.K.B.); (L.M.C.)
| | - Maryam K. Butt
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (R.N.A.); (C.F.); (R.S.B.); (M.K.B.); (L.M.C.)
| | - Lisa M. Curtis
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (R.N.A.); (C.F.); (R.S.B.); (M.K.B.); (L.M.C.)
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Hirtz A, Lebourdais N, Rech F, Bailly Y, Vaginay A, Smaïl-Tabbone M, Dubois-Pot-Schneider H, Dumond H. GPER Agonist G-1 Disrupts Tubulin Dynamics and Potentiates Temozolomide to Impair Glioblastoma Cell Proliferation. Cells 2021; 10:cells10123438. [PMID: 34943948 PMCID: PMC8699794 DOI: 10.3390/cells10123438] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/29/2021] [Accepted: 12/03/2021] [Indexed: 12/11/2022] Open
Abstract
Glioblastoma (GBM) is the most common brain tumor in adults, which is very aggressive, with a very poor prognosis that affects men twice as much as women, suggesting that female hormones (estrogen) play a protective role. With an in silico approach, we highlighted that the expression of the membrane G-protein-coupled estrogen receptor (GPER) had an impact on GBM female patient survival. In this context, we explored for the first time the role of the GPER agonist G-1 on GBM cell proliferation. Our results suggested that G-1 exposure had a cytostatic effect, leading to reversible G2/M arrest, due to tubulin polymerization blockade during mitosis. However, the observed effect was independent of GPER. Interestingly, G-1 potentiated the efficacy of temozolomide, the current standard chemotherapy treatment, since the combination of both treatments led to prolonged mitotic arrest, even in a temozolomide less-sensitive cell line. In conclusion, our results suggested that G-1, in combination with standard chemotherapy, might be a promising way to limit the progression and aggressiveness of GBM.
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Affiliation(s)
- Alex Hirtz
- Université de Lorraine, CNRS, CRAN, F-54000 Nancy, France; (A.H.); (N.L.); (F.R.); (Y.B.); (A.V.); (H.D.-P.-S.)
| | - Nolwenn Lebourdais
- Université de Lorraine, CNRS, CRAN, F-54000 Nancy, France; (A.H.); (N.L.); (F.R.); (Y.B.); (A.V.); (H.D.-P.-S.)
| | - Fabien Rech
- Université de Lorraine, CNRS, CRAN, F-54000 Nancy, France; (A.H.); (N.L.); (F.R.); (Y.B.); (A.V.); (H.D.-P.-S.)
- Université de Lorraine, CHRU-Nancy, Service de Neurochirurgie, F-54000 Nancy, France
| | - Yann Bailly
- Université de Lorraine, CNRS, CRAN, F-54000 Nancy, France; (A.H.); (N.L.); (F.R.); (Y.B.); (A.V.); (H.D.-P.-S.)
| | - Athénaïs Vaginay
- Université de Lorraine, CNRS, CRAN, F-54000 Nancy, France; (A.H.); (N.L.); (F.R.); (Y.B.); (A.V.); (H.D.-P.-S.)
- Université de Lorraine, CNRS, Inria, LORIA, F-54000 Nancy, France;
| | | | - Hélène Dubois-Pot-Schneider
- Université de Lorraine, CNRS, CRAN, F-54000 Nancy, France; (A.H.); (N.L.); (F.R.); (Y.B.); (A.V.); (H.D.-P.-S.)
| | - Hélène Dumond
- Université de Lorraine, CNRS, CRAN, F-54000 Nancy, France; (A.H.); (N.L.); (F.R.); (Y.B.); (A.V.); (H.D.-P.-S.)
- Correspondence: ; Tel.: +33-372746115
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Gao Y, Li L, Yu J, Zhang Z. Rosuvastatin protects PC12 cells from hypoxia/reoxygenation-induced injury by inhibiting endoplasmic reticulum stress-induced apoptosis. Exp Ther Med 2021; 22:1189. [PMID: 34475979 PMCID: PMC8406900 DOI: 10.3892/etm.2021.10623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 04/23/2021] [Indexed: 11/07/2022] Open
Abstract
The endoplasmic reticulum stress (ERS) response serves an important role in cerebral ischemia-reperfusion injury (CIRI). However, to the best of the our knowledge, the effect of rosuvastatin on the ERS response in CIRI has not yet been studied. In the present study, the effect of rosuvastatin on cell damage in CIRI was investigated; furthermore, the effect of rosuvastatin on the ERS response was explored. Firstly, a hypoxia/reoxygenation (H/R)-induced cell damage model was established in PC12 cells. Cell viability was subsequently detected by a Cell Counting Kit-8 assay. A lactate dehydrogenase kit was used to detect cytotoxicity. TUNEL assay was then used to measure the extent of cell apoptosis, and western blotting was used to analyze the expression levels of the apoptosis-associated proteins Bax, Bcl-2, cleaved caspase-3 and cleaved caspase-9. In addition, western blotting was used to detect the expression levels of ERS-associated proteins, including phosphorylated (p)-protein kinase R-like endoplasmic reticulum kinase (PERK), p-eukaryotic initiation factor 2α and other proteins. Treatment with rosuvastatin led to an increased activity of H/R-induced PC12 cells and a decrease in their cytotoxicity. Rosuvastatin also led to an inhibition in apoptosis and ERS in H/R-induced PC12 cells. After administration of the ERS response activator thapsigargin (TG), TG was found to reverse the protective effect of rosuvastatin on injury of H/R-induced PC12 cells. Taken together, these findings have shown that rosuvastatin is able to protect PC12 cells from H/R-induced injury via inhibiting ERS-induced apoptosis, providing a strong theoretical basis for the use of rosuvastatin in the clinical treatment of CIRI.
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Affiliation(s)
- Yu Gao
- Department of Neurosurgery, First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, Hunan 410007, P.R. China
| | - Libo Li
- Department of Neurosurgery, First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, Hunan 410007, P.R. China
| | - Jianbai Yu
- Department of Neurosurgery, First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, Hunan 410007, P.R. China
| | - Zhanwei Zhang
- Department of Neurosurgery, First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, Hunan 410007, P.R. China
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Finney CA, Shvetcov A, Westbrook RF, Morris MJ, Jones NM. The selective estrogen receptor modulator tamoxifen protects against subtle cognitive decline and early markers of injury 24 h after hippocampal silent infarct in male Sprague-Dawley rats. Horm Behav 2021; 134:105016. [PMID: 34242875 DOI: 10.1016/j.yhbeh.2021.105016] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 06/03/2021] [Accepted: 06/05/2021] [Indexed: 02/07/2023]
Abstract
Silent infarcts (SI) are subcortical cerebral infarcts occurring in the absence of typical ischemia symptoms and are linked to cognitive decline and dementia development. There are no approved treatments for SI. One potential treatment is tamoxifen, a selective estrogen receptor modulator. It is critical to establish whether treatments effectively target the early consequences of SI to avoid progression to complete injury. We induced SI in the dorsal hippocampal CA1 of rats and assessed whether tamoxifen is protective 24 h later against cognitive deficits and injury responses including gliosis, apoptosis, inflammation and changes in estrogen receptors (ERs). SI led to subtle cognitive impairment on the object place task, an effect ameliorated by tamoxifen administration. SI did not lead to detectable hippocampal cell loss but increased apoptosis, astrogliosis, microgliosis and inflammation. Tamoxifen protected against the effects of SI on all measures except microgliosis. SI increased ERα and decreased ERβ in the hippocampus, which were mitigated by tamoxifen. Exploratory data analyses using scatterplot matrices and principal component analysis indicated that SI rats given tamoxifen were indistinguishable from controls. Further, SI rats were significantly different from all other groups, an effect associated with low levels of ERα and increased apoptosis, gliosis, inflammation, ERβ, and time spent with the unmoved object. The results demonstrate that tamoxifen is protective against the early cellular and cognitive consequences of hippocampal SI 24 h after injury. Tamoxifen mitigates apoptosis, gliosis, and inflammation and normalization of ER levels in the CA1, leading to improved cognitive outcomes after hippocampal SI.
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15
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Li G, LeiQian, Gu P, Fan D. Dexmedetomidine post-conditioning attenuates cerebral ischemia following asphyxia cardiac arrest through down-regulation of apoptosis and neuroinflammation in rats. BMC Anesthesiol 2021; 21:180. [PMID: 34182937 PMCID: PMC8236741 DOI: 10.1186/s12871-021-01394-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 06/10/2021] [Indexed: 12/17/2022] Open
Abstract
Background Neuroprotection strategies after cardiac arrest (CA)/cardiopulmonary resuscitation (CPR) remain key areas of basic and clinical research. This study was designed to investigate the neuroprotective effects of dexmedetomidine following resuscitation and potential mechanisms. Methods Anesthetized rats underwent 6-min asphyxia-based cardiac arrest and resuscitation, after which the experimental group received a single intravenous dose of dexmedetomidine (25 μg/kg). Neurological outcomes and ataxia were assessed after the return of spontaneous circulation. The serum levels and brain expression of inflammation markers was examined, and apoptotic cells were quantified by TUNEL staining. Results Neuroprotection was enhanced by dexmedetomidine post-conditioning after the return of spontaneous circulation. This enhancement was characterized by the promotion of neurological function scores and coordination. In addition, dexmedetomidine post-conditioning attenuated the serum levels of the pro-inflammatory cytokine tumor necrosis factor (TNF)-α at 2 h, as well as interleukin IL-1β at 2, 24, and 48 h. TUNEL staining showed that the number of apoptotic cells in the dexmedetomidine post-conditioning group was significantly reduced compared with the control group. Further western blot analysis indicated that dexmedetomidine markedly reduced the levels of caspase-3 and nuclear factor-kappa B (NF-κB) in the brain. Conclusions Dexmedetomidine post-conditioning had a neuroprotective effect against cerebral injury following asphyxia-induced cardiac arrest. The mechanism was associated with the downregulation of apoptosis and neuroinflammation.
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Affiliation(s)
- Guangqian Li
- School of Medicine, Universityof Electronic Science and Technology of China, Chengdu, China
| | - LeiQian
- School of Medicine, Universityof Electronic Science and Technology of China, Chengdu, China
| | - Pan Gu
- School of Medicine, Universityof Electronic Science and Technology of China, Chengdu, China
| | - Dan Fan
- School of Medicine, Universityof Electronic Science and Technology of China, Chengdu, China. .,Department of Anesthesiology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, No. 32 West Second Section, First RingRoad, Chengdu, 610072, Sichuan, China.
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16
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Dinh QN, Vinh A, Arumugam TV, Drummond GR, Sobey CG. G protein-coupled estrogen receptor 1: a novel target to treat cardiovascular disease in a sex-specific manner? Br J Pharmacol 2021; 178:3849-3863. [PMID: 33948934 DOI: 10.1111/bph.15521] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 04/23/2021] [Accepted: 04/28/2021] [Indexed: 12/19/2022] Open
Abstract
As an agonist of the classical nuclear receptors, estrogen receptor-α and -β (NR3A1/2), estrogen has been assumed to inhibit the development of cardiovascular disease in premenopausal women. Indeed, reduced levels of estrogen after menopause are believed to contribute to accelerated morbidity and mortality rates in women. However, estrogen replacement therapy has variable effects on cardiovascular risk in postmenopausal women, including increased serious adverse events. Interestingly, preclinical studies have shown that selective activation of the novel membrane-associated G protein-coupled estrogen receptor, GPER, can promote cardiovascular protection. These benefits are more evident in ovariectomised than intact females or in males. It is therefore possible that selective targeting of the GPER in postmenopausal women could provide cardiovascular protection with fewer adverse effects that are caused by conventional 'receptor non-specific' estrogen replacement therapy. This review describes new data regarding the merits of targeting GPER to treat cardiovascular disease with a focus on sex differences.
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Affiliation(s)
- Quynh Nhu Dinh
- Department of Physiology, Anatomy and Microbiology and Centre for Cardiovascular Biology and Disease Research, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia
| | - Antony Vinh
- Department of Physiology, Anatomy and Microbiology and Centre for Cardiovascular Biology and Disease Research, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia
| | - Thiruma V Arumugam
- Department of Physiology, Anatomy and Microbiology and Centre for Cardiovascular Biology and Disease Research, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia
| | - Grant R Drummond
- Department of Physiology, Anatomy and Microbiology and Centre for Cardiovascular Biology and Disease Research, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia
| | - Christopher G Sobey
- Department of Physiology, Anatomy and Microbiology and Centre for Cardiovascular Biology and Disease Research, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia
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Wang Q, Li Z, Liu K, Liu J, Chai S, Chen G, Wen S, Ming T, Wang J, Ma Y, Zeng H, Liu C, Xue B. Activation of the G Protein-Coupled Estrogen Receptor Prevented the Development of Acute Colitis by Protecting the Crypt Cell. J Pharmacol Exp Ther 2020; 376:281-293. [PMID: 33318078 DOI: 10.1124/jpet.120.000216] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/05/2020] [Indexed: 12/13/2022] Open
Abstract
G protein-coupled estrogen receptor (GPER) might be involved in ulcerative colitis (UC), but the direct effect of GPER on UC is still unclear. We used male C57BL/6 mice to establish the acute colitis model with administration of dextran sulfate sodium and explored the effect of GPER on acute colitis and its possible mechanism. The selective GPER agonist G-1 inhibited weight loss and colon shortening and decreased the disease activity index for colitis and histologic damage in mice with colitis. All of these effects were prevented by a selective GPER blocker. G-1 administration prevented the dysfunction of tight junction protein expression and goblet cells in colitis model and thus inhibited the increase of mucosal permeability in colitis-suffering mice significantly. GPER activation reduced expression of glucose-regulating peptide-78 and anti-CCAAT/enhancer-binding protein homologous protein and attenuated the three arms of the unfolded protein response in colitis. G-1 therapy inhibited the increase of cleavage caspase-3- and TUNEL-positive cells in colonic crypts in the colitis model, increased the number of Ki67- and bromodeoxyuridine-positive cells in crypts, and reversed the decrease of cyclin D1 and cyclin B1 expression in colitis, indicating its protective effect on crypt cells. In cultured CCD841 cells, G-1 treatment fought against cell injury induced by endoplasmic reticulum stress. These findings demonstrate that GPER activation prevents colitis by protecting the colonic crypt cells, which are associated with inhibition of endoplasmic reticulum stress. SIGNIFICANCE STATEMENT: We demonstrate that G protein-coupled estrogen receptor (GPER) activation prevents dextran sulfate sodium-induced acute colitis by protecting the crypt cells, showing that it inhibited the crypt cell apoptosis and protected proliferation of crypt cells, which resulted in protection of the intestinal mucosal barrier. This protective effect was achieved (at least in part) by inhibiting endoplasmic reticulum stress. Mucosal healing is regarded as a key therapeutic target for colitis, and GPER is expected to become a new therapeutic target for colitis.
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Affiliation(s)
- Qian Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Zhao Li
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Kaixuan Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Jianbo Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Shiquan Chai
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Guanyu Chen
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Shuyu Wen
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Tian Ming
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Jiayi Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Yuntao Ma
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Honghui Zeng
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Chuanyong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
| | - Bing Xue
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China (Q.W., Z.L., K.L., J.L., S.C., G.C., S.W., T.M., H.Z., C.L., B.X.) and Second Clinical Medical College, Lanzhou University, Lanzhou, China (Y.M.)
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Gohar EY, Pollock DM. Functional Interaction of Endothelin Receptors in Mediating Natriuresis Evoked by G Protein-Coupled Estrogen Receptor 1. J Pharmacol Exp Ther 2020; 376:98-105. [PMID: 33127751 PMCID: PMC7788354 DOI: 10.1124/jpet.120.000322] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 10/26/2020] [Indexed: 01/14/2023] Open
Abstract
The G protein–coupled estrogen receptor 1 (GPER1) mediates rapid estrogenic signaling. We recently reported that activation of GPER1 in the renal medulla evokes endothelin-1–dependent natriuresis in female, but not male, rats. However, the involvement of the ET receptors, ETA and ETB, underlying GPER1 natriuretic action remain unclear. In this study, we used genetic and pharmacologic methods to identify the contributions of ETA and ETB in mediating this female-specific natriuretic effect of renal medullary GPER1. Infusion of the GPER1-selective agonist G1 (5 pmol/kg per minute) into the renal medulla for 40 minutes increased Na+ excretion and urine flow in anesthetized female ETB-deficient (ETB def) rats and littermate controls but did not affect blood pressure or urinary K+ excretion in either group. Pretreatment with the selective ETA inhibitor ABT-627 (5 mg/kg, intravenous) abolished G1-induced natriuresis in ETB def rats. To further isolate the effects of inhibiting either receptor alone, we conducted the same experiments in anesthetized female Sprague-Dawley (SD) rats pretreated or not with ABT-627 and/or the selective ETB inhibitor A-192621 (10 mg/kg, intravenous). Neither antagonism of ETA nor antagonism of ETB receptor alone affected the G1-induced increase in Na+ excretion and urine flow in SD rats. However, simultaneous antagonism of both receptors completely abolished these effects. These data suggest that ETA and ETB receptors can mediate the natriuretic and diuretic response to renal medullary GPER1 activation in female rats.
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Affiliation(s)
- Eman Y Gohar
- Cardio-Renal Physiology and Medicine, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Alabama (E.Y.G, D.M.P); and Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt (E.Y.G)
| | - David M Pollock
- Cardio-Renal Physiology and Medicine, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Alabama (E.Y.G, D.M.P); and Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt (E.Y.G)
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Vahidinia Z, Karimian M, Joghataei MT. Neurosteroids and their receptors in ischemic stroke: From molecular mechanisms to therapeutic opportunities. Pharmacol Res 2020; 160:105163. [DOI: 10.1016/j.phrs.2020.105163] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/17/2020] [Accepted: 08/17/2020] [Indexed: 01/09/2023]
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G-protein coupled estrogen receptor activation protects the viability of hyperoxia-treated primary murine retinal microglia by reducing ER stress. Aging (Albany NY) 2020; 12:17367-17379. [PMID: 32920550 PMCID: PMC7521534 DOI: 10.18632/aging.103733] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 06/19/2020] [Indexed: 01/24/2023]
Abstract
In this study, we investigated the effects of G-protein coupled estrogen receptor (GPER) activation in the early phase of retinopathy of prematurity (ROP) and its association with endoplasmic reticulum (ER) stress using primary murine retinal microglia as an experimental model. Fluorescence microscopy results show that the CD11c-positive primary retinal microglia in vitro cultured for 14 days were GPER-positive. GPER activation using GPER-agonist G-1 reduced autophagy and increased the viability of the hyperoxia-treated primary murine retinal microglia. Furthermore, GPER activation reduced the expression of ER stress-related proteins, IRE1α, PERK and ATF6 in the hyperoxia-treated primary murine retinal microglia compared to the corresponding controls. GPER activation significantly reduced a time-dependent increase in IP3R-dependent calcium release from the ER, thereby maintaining higher calcium levels in the ER of hyperoxia-treated primary retinal microglia. However, the protective effects of G-1 on the hyperoxia-treated primary retinal microglia were eliminated by inactivation of GPER using the GPER-antagonist, G-15. In conclusion, our study demonstrates that GPER activation enhances the survival of hyperoxia-treated primary retinal microglia by reducing ER stress. Our study demonstrates the therapeutic potential of GPER agonists such as G-1 in the early phase of ROP.
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Xu ZZ, Chen QY, Deng SY, Zhang M, Tan CY, Yang Wang, Ma KT, Li L, Si JQ, Zhu LC. 17β-Estradiol Attenuates Neuropathic Pain Caused by Spared Nerve Injury by Upregulating CIC-3 in the Dorsal Root Ganglion of Ovariectomized Rats. Front Neurosci 2019; 13:1205. [PMID: 31787875 PMCID: PMC6856564 DOI: 10.3389/fnins.2019.01205] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 10/24/2019] [Indexed: 12/14/2022] Open
Abstract
17β-estradiol plays a role in pain sensitivity, analgesic drug efficacy, and neuropathic pain prevalence, but the underlying mechanisms remain unclear. Here, we investigated whether voltage-gated chloride channel-3 (ClC-3) impacts the effects of 17β-estradiol (E2) on spared nerve injury (SNI)-induced neuropathic pain in ovariectomized (OVX) female Sprague Dawley rats that were divided into OVX, OVX + SNI, OVX + SNI + E2, OVX + SNI + E2 + DMSO (vehicle, dimethyl sulfoxide), or OVX + SNI + E2+Cltx (ClC-3-blocker chlorotoxin) groups. Changes in ClC-3 protein expression were monitored by western blot analysis. Behavioral testing used the paw withdrawal threshold to acetone irritation and paw withdrawal thermal latency (PWTL) to thermal stimulation. Immunofluorescence indicated the localization and protein expression levels of ClC-3. OVX + SNI + E2 rats were subcutaneously injected with 17β-estradiol once daily for 7 days; a sheathed tube was implanted, and chlorotoxin was injected for 4 days. Intrathecal Cltx to OVX and OVX + SNI rats was administered for 4 consecutive days (days 7–10 after SNI) to further determine the contribution of ClC-3 to neuropathic pain. Patch clamp technology in current clamp mode was used to measure the current threshold (rheobase) dorsal root ganglion (DRG) neurons and the minimal current that evoked action potentials (APs) as excitability parameters. The mean number of APs at double-strength rheobase verified neuronal excitability. There was no difference in behaviors and ClC-3 expression after OVX. Compared with OVX + SNI rats, OVX + SNI + E2 rats showed a lower paw withdrawal threshold to the acetone stimulus, but the PWTL was not significantly different, indicating increased sensitivity to cold but not to thermal pain. Co-immunofluorescent data revealed that ClC-3 was mainly distributed in A- and C-type nociceptive neurons, especially in medium/small-sized neurons. 17β-estradiol administration was associated with increased expression of ClC-3. 17β-estradiol-induced increase in ClC-3 expression was blocked by co-administration of Cltx. Cltx causes hyperalgesia and decreased expression of ClC-3 in OVX rats. Patch clamp results suggested that 17β-estradiol attenuated the excitability of neurons induced by SNI by up-regulating the expression of ClC-3 in the DRG of OVX rats. 17β-estradiol administration significantly improved cold allodynia thresholds in OVX rats with SNI. The mechanism for this decreased sensitivity may be related to the upregulation of ClC-3 expression in the DRG.
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Affiliation(s)
- Zhen-Zhen Xu
- Department of Anesthesiology, First Affiliated Hospital of Shihezi University, Shihezi, China.,Department of Physiology, Shihezi University School of Medicine, Shihezi, China.,Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, China.,Department of Anesthesiology, Xiangyang Central Hospital, Hubei University of Arts and Science, Xiangyang, China
| | - Qin-Yi Chen
- Department of Anesthesiology, First Affiliated Hospital of Shihezi University, Shihezi, China.,Department of Physiology, Shihezi University School of Medicine, Shihezi, China.,Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, China.,Department of Anesthesiology, Xiangyang Central Hospital, Hubei University of Arts and Science, Xiangyang, China
| | - Shi-Yu Deng
- Department of Anesthesiology, First Affiliated Hospital of Shihezi University, Shihezi, China.,Department of Physiology, Shihezi University School of Medicine, Shihezi, China.,Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, China
| | - Meng Zhang
- Department of Anesthesiology, Sichuan Academy of Medical Sciences, Sichuan Provincial People's Hospital, Chengdu, China
| | - Chao-Yang Tan
- Department of Physiology, Shihezi University School of Medicine, Shihezi, China.,Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, China
| | - Yang Wang
- Department of Physiology, Shihezi University School of Medicine, Shihezi, China.,Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, China
| | - Ke-Tao Ma
- Department of Physiology, Shihezi University School of Medicine, Shihezi, China.,Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, China
| | - Li Li
- Department of Physiology, Shihezi University School of Medicine, Shihezi, China.,Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, China.,Department of Physiology, Medical College of Jiaxing University, Jiaxing, China
| | - Jun-Qiang Si
- Department of Anesthesiology, First Affiliated Hospital of Shihezi University, Shihezi, China.,Department of Physiology, Shihezi University School of Medicine, Shihezi, China.,Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, China.,Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Physiology, School of Basic Medical Sciences, Wuhan University School of Medicine, Wuhan, China
| | - Li-Cang Zhu
- Department of Physiology, Shihezi University School of Medicine, Shihezi, China.,Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, China
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Chen H, Li X. LncRNA ROR is involved in cerebral hypoxia/reoxygenation-induced injury in PC12 cells via regulating miR-135a-5p/ROCK1/2. Am J Transl Res 2019; 11:6145-6158. [PMID: 31632583 PMCID: PMC6789264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
Ischemic stroke is a common cerebrovascular disease with high morbidity, disability and mortality. LncRNAs were involved in ischemia/reperfusion injury. The present study aims to investigate whether lncRNA ROR can promote the cerebral hypoxia/reoxygenation (H/R) injury in vitro, a cellular model of cerebral ischemia/reperfusion injury, through inhibiting the expression of miR-135a-5p or upregulating the expression of ROCK1 and ROCK2. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was used to detect the lncRNA ROR expression in PC12 cells induced by H/R and verify the transfection effect. ROS, LDH, SOD and MDA levels were detected by respective kits. CCK-8 assay and flow cytometry analysis respectively detected the cell viability and cell apoptosis. Western blot analysis was to analyze the expression of apoptosis-related proteins (Bcl-2, Bax and cleaved caspase3). Immunofluorescent staining detected the ROCK1/2 expression. As a result, lncRNA ROR expression was increased in the PC12 cells induced by H/R. LncRNA ROR overexpression could aggravate injury of PC12 cells induced by H/R. And, lncRNA ROR overexpression could decrease viability and promote apoptosis of PC12 cells induced by H/R. In addition, miR-135a-5p was demonstrated to be a target of lncRNA ROR and lncRNA ROR improved H/R injury in PC12 cells by up-regulating the expression of miR-135a-5p via down-regulating ROCK1/2 expression. In conclusion, this study indicated that lncRNA ROR could promote the cerebral H/R injury by inhibiting the expression of miR-135a-5p or upregulating the expression of ROCK1/2. And, miR-135a-5p overexpression could improve the cerebral H/R injury by inhibiting the expression of ROCK1/2.
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Affiliation(s)
- Hong Chen
- Cadre Special Clinic, Fujian Provincial Hospital Fuzhou 350001, P. R. China
| | - Xiaoming Li
- Cadre Special Clinic, Fujian Provincial Hospital Fuzhou 350001, P. R. China
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Chen H, Li X. WITHDRAWN: LncRNA-ROR is involved in cerebral hypoxia/reoxygenation-induced injury via regulating miR-135a-5p/ROCK1/2. Exp Mol Pathol 2019:104298. [PMID: 31419405 DOI: 10.1016/j.yexmp.2019.104298] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/07/2019] [Accepted: 08/13/2019] [Indexed: 01/06/2023]
Affiliation(s)
- Hong Chen
- Cadre Special Clinic, Fujian Provincial Hospital, Fuzhou 350001, PR China
| | - Xiaoming Li
- Cadre Special Clinic, Fujian Provincial Hospital, Fuzhou 350001, PR China.
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