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Hameed RA, Ahmed EK, Mahmoud AA, Atef AA. G protein-coupled estrogen receptor (GPER) selective agonist G1 attenuates the neurobehavioral, molecular and biochemical alterations induced in a valproic acid rat model of autism. Life Sci 2023:121860. [PMID: 37331505 DOI: 10.1016/j.lfs.2023.121860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/31/2023] [Accepted: 06/11/2023] [Indexed: 06/20/2023]
Abstract
AIMS Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder with a rising prevalence in boys rather than girls. G protein-coupled estrogen receptor (GPER) activation by its agonist G1 showed a neuroprotective effect, similar to estradiol. The present study aimed to examine the potential of the selective GPER agonist G1 therapy on the behavioral, histopathological, biochemical, and molecular alterations induced in a valproic acid (VPA)-rat model of autism. MAIN METHODS VPA (500 mg/kg) was intraperitoneally administered to female Wistar rats (on gestational day 12.5) to induce the VPA-rat model of autism. The male offspring were intraperitoneally administered with G1 (10 and 20 μg/kg) for 21 days. After the treatment process, rats performed behavioral assessments. Then, sera and hippocampi were collected for biochemical and histopathological examinations and gene expression analysis. KEY FINDINGS GPER agonist G1 attenuated behavioral deficits, including hyperactivity, declined spatial memory and social preferences, anxiety, and repetitive behavior in VPA rats. G1 improved neurotransmission and reduced oxidative stress and histological alteration in the hippocampus. G1 reduced serum free T levels and interleukin-1β and up-regulated GPER, RORα, and aromatase gene expression levels in the hippocampus. SIGNIFICANCE The present study suggests that activation of GPER by its selective agonist G1 altered the derangements induced in a VPA-rat model of autism. G1 normalized free T levels via up-regulation of hippocampal RORα and aromatase gene expression. G1 provoked estradiol neuroprotective functions via up-regulation of hippocampal GPER expression. The G1 treatment and GPER activation provide a promising therapeutic approach to counteract the autistic-like symptoms.
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Affiliation(s)
- Rehab Abdel Hameed
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Emad K Ahmed
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Asmaa A Mahmoud
- Department of Zoology, Faculty of Science, Ain Shams University, Cairo, Egypt.
| | - Azza A Atef
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
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2
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Lacasse JM, Gomez-Perales E, Brake WG. Modeling hormonal contraception in female rats: A framework for studies in behavioral neurobiology. Front Neuroendocrinol 2022; 67:101020. [PMID: 35952797 DOI: 10.1016/j.yfrne.2022.101020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/19/2022] [Accepted: 08/03/2022] [Indexed: 12/12/2022]
Abstract
Research on hormonal contraceptives (HC) in animal models is lacking, and as a result, so is our understanding of the impact of HC on the brain and behavior. Here, we provide a review of the pharmacology of HC, as well as the methodology and best practices for designing a model of HC in female rats. We outline specific methodological considerations regarding dosing, route of administration, exposure time/timing, and selecting a control group. We also provide a framework outlining important levels of analysis for thinking about the impact of HC on behavioral and neurobiological outcomes. The purpose of this review is to equip researchers with foundational knowledge, and some basic elements of experimental design for future studies investigating the impact of HC on the brain and behavior of female rats.
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Affiliation(s)
- Jesse M Lacasse
- Centre for Studies in Behavioral Neurobiology, Department of Psychology, Concordia University, Montréal H4B 1R6, Canada.
| | - Eamonn Gomez-Perales
- Centre for Studies in Behavioral Neurobiology, Department of Psychology, Concordia University, Montréal H4B 1R6, Canada
| | - Wayne G Brake
- Centre for Studies in Behavioral Neurobiology, Department of Psychology, Concordia University, Montréal H4B 1R6, Canada.
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3
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Gupta K, Vishwakarma J, Garg A, Pandey R, Jain V, Gupta R, Das U, Roy S, Bandyopadhyay S. Arsenic Induces GSK3β-dependent p-tau, neuronal apoptosis and cognitive impairment via an interdependent hippocampal ERα and IL-1/IL-1R1 mechanism in female rats. Toxicol Sci 2022; 190:79-98. [PMID: 35993674 DOI: 10.1093/toxsci/kfac087] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Arsenic is an environmental contaminant with potential neurotoxicity. We previously reported that arsenic promoted hippocampal neuronal apoptosis, inducing cognitive loss. Here, we correlated it with tau pathology. We observed that environmentally relevant arsenic exposure increased tau phosphorylation and the principal tau kinase, glycogen synthase kinase-3 beta (GSK3β), in the female rat hippocampal neurons. We detected the same in primary hippocampal neurons. Since a regulated estrogen receptor (ER) level and inflammation contributed to normal hippocampal functions, we examined their levels following arsenic exposure. Our ER screening data revealed that arsenic down-regulated hippocampal neuronal ERα. We also detected an up-regulated hippocampal interleukin-1 (IL-1) and its receptor, IL-1R1. Further, co-treating arsenic with the ERα agonist, 4,4',4''-(4-Propyl-[1H]-pyrazole-1,3,5-triyl)trisphenol (PPT), or IL-1R antagonist (IL-1Ra) resulted in reduced GSK3β and p-tau, indicating involvement of decreased ERα and increased IL-1/IL-1R1 in tau hyperphosphorylation. We then checked whether ERα and IL-1/IL-1R1 had linkage, and detected that while PPT reduced IL-1 and IL-1R1, the IL-1Ra restored ERα, suggesting their arsenic-induced interdependence. We finally correlated this pathway with apoptosis and cognition. We observed that PPT, IL-1Ra and the GSK3β inhibitor, LiCl, reduced hippocampal neuronal cleaved caspase-3 and TUNEL+ve apoptotic count, and decreased the number of errors during learning and increased the saving-memory for Y-Maze Test and retention performance for Passive avoidance test in arsenic-treated rats. Thus, our study reveals a novel mechanism of arsenic-induced GSK3β-dependent tau pathology via interdependent ERα and IL-1/IL-1R1 signaling. It also envisages the protective role of ERα agonist and IL-1 inhibitor against arsenic-induced neurotoxicity.
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Affiliation(s)
- Keerti Gupta
- Developmental Toxicology Laboratory, Systems Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Jitendra Vishwakarma
- Developmental Toxicology Laboratory, Systems Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Asmita Garg
- Developmental Toxicology Laboratory, Systems Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Rukmani Pandey
- Developmental Toxicology Laboratory, Systems Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Veena Jain
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.,Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
| | - Raksha Gupta
- Developmental Toxicology Laboratory, Systems Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.,DAV PG College, Nasirabad, Buxipur, Gorakhpur, Uttar Pradesh, 273001, India
| | - Uttara Das
- Developmental Toxicology Laboratory, Systems Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Somendu Roy
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.,Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
| | - Sanghamitra Bandyopadhyay
- Developmental Toxicology Laboratory, Systems Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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4
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Marchant IC, Chabert S, Martínez-Pinto J, Sotomayor-Zárate R, Ramírez-Barrantes R, Acevedo L, Córdova C, Olivero P. Estrogen, Cognitive Performance, and Functional Imaging Studies: What Are We Missing About Neuroprotection? Front Cell Neurosci 2022; 16:866122. [PMID: 35634466 PMCID: PMC9133497 DOI: 10.3389/fncel.2022.866122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 03/08/2022] [Indexed: 01/20/2023] Open
Abstract
Menopause transition can be interpreted as a vulnerable state characterized by estrogen deficiency with detrimental systemic effects as the low-grade chronic inflammation that appears with aging and partly explains age-related disorders as cancer, diabetes mellitus and increased risk of cognitive impairment. Over the course of a lifetime, estrogen produces several beneficial effects in healthy neurological tissues as well as cardioprotective effects, and anti-inflammatory effects. However, clinical evidence on the efficacy of hormone treatment in menopausal women has failed to confirm the benefit reported in observational studies. Unambiguously, enhanced verbal memory is the most robust finding from longitudinal and cross-sectional studies, what merits consideration for future studies aiming to determine estrogen neuroprotective efficacy. Estrogen related brain activity and functional connectivity remain, however, unexplored. In this context, the resting state paradigm may provide valuable information about reproductive aging and hormonal treatment effects, and their relationship with brain imaging of functional connectivity may be key to understand and anticipate estrogen cognitive protective effects. To go in-depth into the molecular and cellular mechanisms underlying rapid-to-long lasting protective effects of estrogen, we will provide a comprehensive review of cognitive tasks used in animal studies to evaluate the effect of hormone treatment on cognitive performance and discuss about the tasks best suited to the demonstration of clinically significant differences in cognitive performance to be applied in human studies. Eventually, we will focus on studies evaluating the DMN activity and responsiveness to pharmacological stimulation in humans.
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Affiliation(s)
- Ivanny Carolina Marchant
- Laboratorio de Modelamiento en Medicina, Escuela de Medicina, Universidad de Valparaíso, Viña del Mar, Chile
- Centro Interoperativo en Ciencias Odontológicas y Médicas, Universidad de Valparaíso, Valparaíso, Chile
- *Correspondence: Ivanny Carolina Marchant
| | - Stéren Chabert
- Millennium Nucleus in Cardiovascular Magnetic Resonance, Santiago, Chile
- Escuela de Ingeniería Biomédica, Universidad de Valparaiso, Valparaíso, Chile
- Centro de Investigación y Desarrollo en Ingeniería en Salud, Universidad de Valparaíso, Valparaíso, Chile
| | - Jonathan Martínez-Pinto
- Centro de Neurobiología y Fisiopatología Integrativa, Valparaíso, Chile
- Laboratorio de Neuroquímica y Neurofarmacología, Facultad de Ciencias, Universidad de Valparaíso, Valparaiso, Chile
- Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Ramón Sotomayor-Zárate
- Centro de Neurobiología y Fisiopatología Integrativa, Valparaíso, Chile
- Laboratorio de Neuroquímica y Neurofarmacología, Facultad de Ciencias, Universidad de Valparaíso, Valparaiso, Chile
- Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | | | - Lilian Acevedo
- Servicio de Neurología Hospital Carlos van Buren, Valparaíso, Chile
| | - Claudio Córdova
- Laboratorio de Estructura y Función Celular, Escuela de Medicina, Universidad de Valparaíso, Valparaíso, Chile
| | - Pablo Olivero
- Centro Interoperativo en Ciencias Odontológicas y Médicas, Universidad de Valparaíso, Valparaíso, Chile
- Laboratorio de Estructura y Función Celular, Escuela de Medicina, Universidad de Valparaíso, Valparaíso, Chile
- Pablo Olivero
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5
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Maher EE, Kipp ZA, Leyrer-Jackson JM, Khatri S, Bondy E, Martinez GJ, Beckmann JS, Hinds TD, Bimonte-Nelson HA, Gipson CD. Ovarian Hormones Regulate Nicotine Consumption and Accumbens Glutamatergic Plasticity in Female Rats. eNeuro 2022; 9:ENEURO.0286-21.2022. [PMID: 35697512 PMCID: PMC9239849 DOI: 10.1523/eneuro.0286-21.2022] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 05/26/2022] [Accepted: 06/06/2022] [Indexed: 11/21/2022] Open
Abstract
Women report greater cigarette cravings during the menstrual cycle phase with higher circulating levels of 17β-estradiol (E2), which is metabolized to estrone (E1). Both E2 and E1 bind to estrogen receptors (ERs), which have been highly studied in the breast, uterus, and ovary. Recent studies have found that ERs are also located on GABAergic medium spiny neurons (MSNs) within the nucleus accumbens core (NAcore). Glutamatergic plasticity in NAcore MSNs is altered following nicotine use; however, it is unknown whether estrogens impact this neurobiological consequence. To test the effect of estrogen on nicotine use, we ovariectomized (OVX) female rats that then underwent nicotine self-administration acquisition and compared them to ovary-intact (sham) rats. The OVX animals then received either sesame oil (vehicle), E2, or E1+E2 supplementation for 4 or 20 d before nicotine sessions. While both ovary-intact and OVX females readily discriminated levers, OVX females consumed less nicotine than sham females. Further, neither E2 nor E1+E2 increased nicotine consumption back to sham levels following OVX, regardless of the duration of the treatment. OVX also rendered NAcore MSNs in a potentiated state following nicotine self-administration, which was reversed by 4 d of systemic E2 treatment. Finally, we found that E2 and E1+E2 increased ERα mRNA in the NAcore, but nicotine suppressed this regardless of hormone treatment. Together, these results show that estrogens regulate nicotine neurobiology, but additional factors may be required to restore nicotine consumption to ovary-intact levels.
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Affiliation(s)
- Erin E Maher
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, 40536
| | - Zachary A Kipp
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, 40536
| | | | - Shailesh Khatri
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, 40536
| | - Emma Bondy
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, 40536
| | - Genesee J Martinez
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, 40536
| | - Joshua S Beckmann
- Department of Psychology, University of Kentucky, Lexington, KY, 40506
| | - Terry D Hinds
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, 40536
- Barnstable Brown Diabetes Center, University of Kentucky College of Medicine, Lexington, KY, 40536
- Markey Cancer Center, University of Kentucky, Lexington, KY, 40536
| | - Heather A Bimonte-Nelson
- Department of Psychology, Arizona State University, Tempe, AZ, 85287
- Arizona Alzheimer's Consortium, Phoenix, AZ 85014
| | - Cassandra D Gipson
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, 40536
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6
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Lacasse JM, Patel S, Bailey A, Peronace V, Brake WG. Progesterone rapidly alters the use of place and response memory during spatial navigation in female rats. Horm Behav 2022; 140:105137. [PMID: 35158200 DOI: 10.1016/j.yhbeh.2022.105137] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 02/02/2022] [Accepted: 02/04/2022] [Indexed: 12/25/2022]
Abstract
17β-Estradiol (E2) and progesterone (P) influence place and response memory in female rats in spatial navigation tasks. Use of these memory systems is associated with the hippocampus and the dorsal striatum, respectively. Injections of E2 result in a well-established bias to use place memory, while much less is understood about the role of P. A total of 120 ovariectomized female rats were tested within a dual-solution T-maze task and treated with either low E2 (n = 24), high E2 (10 μg/kg; n = 24), or high E2 in combination with P (500 μg/kg) at three time points before testing: 15 min (n = 24), 1 h (n = 24), and 4 h (n = 24). Given alone, high E2 biases rats to the use of place memory, but this effect is reversed when P is given 1 h or 4 h before testing. This indicates that P may be playing an inhibitory role in the hippocampus during spatial tasks, which is consistent with past findings. Our findings show that P acts rapidly (within an hour) to affect performance during spatial tasks.
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Affiliation(s)
- Jesse M Lacasse
- Centre for Studies in Behavioral Neurobiology, Department of Psychology, Concordia University, Montréal H4B 1R6, Canada
| | - Smita Patel
- Centre for Studies in Behavioral Neurobiology, Department of Psychology, Concordia University, Montréal H4B 1R6, Canada
| | - Alexander Bailey
- Centre for Studies in Behavioral Neurobiology, Department of Psychology, Concordia University, Montréal H4B 1R6, Canada
| | - Vanessa Peronace
- Centre for Studies in Behavioral Neurobiology, Department of Psychology, Concordia University, Montréal H4B 1R6, Canada
| | - Wayne G Brake
- Centre for Studies in Behavioral Neurobiology, Department of Psychology, Concordia University, Montréal H4B 1R6, Canada.
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7
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Cardiovascular, Metabolic and Inflammatory Changes after Ovariectomy and Estradiol Substitution in Hereditary Hypertriglyceridemic Rats. Int J Mol Sci 2022; 23:ijms23052825. [PMID: 35269970 PMCID: PMC8910968 DOI: 10.3390/ijms23052825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/22/2022] [Accepted: 02/28/2022] [Indexed: 01/25/2023] Open
Abstract
Background: If menopause is really independent risk factor for cardiovascular disease is still under debate. We studied if ovariectomy in the model of insulin resistance causes cardiovascular changes, to what extent are these changes reversible by estradiol substitution and if they are accompanied by changes in other organs and tissues. Methods: Hereditary hypertriglyceridemic female rats were divided into three groups: ovariectomized at 8th week (n = 6), ovariectomized with 17-β estradiol substitution (n = 6), and the sham group (n = 5). The strain of abdominal aorta measured by ultrasound, expression of vascular genes, weight and content of myocardium and also non-cardiac parameters were analyzed. Results: After ovariectomy, the strain of abdominal aorta, expression of nitric oxide synthase in abdominal aorta, relative weight of myocardium and of the left ventricle and circulating interleukin-6 decreased; these changes were reversed by estradiol substitution. Interestingly, the content of triglycerides in myocardium did not change after ovariectomy, but significantly increased after estradiol substitution while adiposity index did not change after ovariectomy, but significantly decreased after estradiol substitution. Conclusion: Vascular and cardiac parameters under study differed in their response to ovariectomy and estradiol substitution. This indicates different effects of ovariectomy and estradiol on different cardiovascular but also extracardiac structures.
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8
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Mezzomo NF, da Silva Schmitz I, de Lima VB, Dorneles GP, Schaffer LF, Boeck CR, Romao PRT, Peroza LR. Reversal of haloperidol-induced orofacial dyskinesia and neuroinflammation by isoflavones. Mol Biol Rep 2021; 49:1917-1923. [PMID: 34854012 DOI: 10.1007/s11033-021-07003-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 11/22/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Schizophrenia is a mental illness and its pharmacological treatment consists in the administration of antipsychotics like haloperidol. However, haloperidol often causes extrapyramidal motor disorders such as tardive dyskinesia (TD). So far, there is no effective treatment against TD and alternatives for it have been sought. Isoflafones have been studied as neuroprotector and inhibitor of monoamine oxidase enzyme. Thus, the objective is to evaluate the possible protective effect of isoflavones against the induction of involuntary movements induced by haloperidol in an animal model. METHODS AND RESULTS Male Wistar rats were treated with haloperidol (1 mg/kg/day) and/or isoflavones (80 mg/kg) for 28 days. Rats were submitted to behavioral evaluation to quantify vacuous chewing movements (VCM) and locomotor activity. In addition, the levels of pro-inflammatory cytokines were measured in the striatum. Haloperidol treatment reduced the locomotor activity and increased the number of VCM in rats. Co-treatment with isoflavones was able to reverse hypolocomotion and reduce the number of VCM. Besides, haloperidol caused significant increase in the proinflammatory cytokines (interleukin-1β:IL-1β, tumor necrosis factor-α: TNF-α and IL-6 and the co-treatment with isoflavones was able to reduce the levels of IL-1β and TNF-α, but not IL-6. CONCLUSIONS It is believed that the beneficial effect found with this alternative treatment is related to its anti-inflammatory potential and to the action on estrogen receptors (based on scientific literature findings). Finally, further studies are needed to elucidate the mechanisms of isoflavones in reducing motor disorders induced by antipsychotics.
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Affiliation(s)
| | | | | | - Gilson Pires Dorneles
- Laboratório de Imunologia Celular e Molecular, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | | | - Carina Rodrigues Boeck
- Mestrado em Ciências da Saúde e da Vida, Universidade Franciscana (UFN), Santa Maria, RS, Brazil
| | - Pedro Roosevelt Torres Romao
- Laboratório de Imunologia Celular e Molecular, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Luis Ricardo Peroza
- Mestrado em Ciências da Saúde e da Vida, Universidade Franciscana (UFN), Santa Maria, RS, Brazil.
- Universidade Franciscana (UFN), 97010-032, Santa Maria, RS, Brazil.
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9
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Ma Y, Niu E, Xie F, Liu M, Sun M, Peng Y, Guo H. Electroacupuncture reactivates estrogen receptors to restore the neuroprotective effect of estrogen against cerebral ischemic stroke in long-term ovariectomized rats. Brain Behav 2021; 11:e2316. [PMID: 34473429 PMCID: PMC8553307 DOI: 10.1002/brb3.2316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/15/2021] [Accepted: 07/15/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Stroke is a sexually dimorphic disease and a leading cause of death and disability. Estrogen replacement therapy (ERT) confers beneficial neuroprotective effects if administered within a widely accepted time window called the "critical period." However, very few studies have explored the idea of modulating the critical period to enable long-term post-menopausal women to regain more benefits from estrogen therapy. Here, motivated by previous findings that electroacupuncture could both alter estrogen metabolism and induce significant tolerance against stroke, it was explored whether EA could restore estrogen's neuroprotection against cerebral ischemia in long-term ovariectomized (OVX) rats. METHODS We implemented 1 week(w)-EA pretreatment on OVX-10w or OVX-20w rats, and tested the expression of estrogen receptors, and detected the ERT's neuroprotection against stroke induced by middle cerebral artery occlusion (MCAO). RESULTS We found that the expression levels of phospho-ERα-S118 and estrogen receptor β (ERβ) in the striatum of OVX-10w rats were significantly decreased and ERT's neuroprotection was abolished in the OVX-10w rats. However, EA-1w pretreatment could significantly recover the expression levels of phospho-ERα-S118 and ERβ, and also restored the neuroprotective effects of ERT in OVX-10w rats. However, EA-1w pretreatment could not restore the expression of estrogen receptors and ERT's neuroprotection in OVX-20w rats. CONCLUSION Taken together, our study indicates that EA may be an easy intervention that can restore the efficacy of estrogen therapy during the "critical period," which has the potential to improve the stroke outcomes of an enormous number of long-term post-menopausal women. However, the time-sensitive influences for how EA and estrogen metabolism interact with each other should be considered.
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Affiliation(s)
- Yulong Ma
- Department of Anesthesiology, The First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Erlong Niu
- Department of Orthopedics, 305 Hospital of PLA, Beijing, China
| | - Fei Xie
- Department of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China
| | - Min Liu
- Department of Anesthesiology, The First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Miao Sun
- Department of Anesthesiology, The First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Ye Peng
- Department of Orthopaedics, Air Force Medical Center, PLA, Beijing, China
| | - Hang Guo
- Department of Anesthesiology, The Seventh Medical Center of Chinese PLA General Hospital, Beijing, China
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10
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Zhang M, Flury S, Kim CK, Chung WCJ, Kirk JA, Pak TR. Absolute Quantification of Phosphorylated ERβ Amino Acids in the Hippocampus of Women and in A Rat Model of Menopause. Endocrinology 2021; 162:6306514. [PMID: 34147032 PMCID: PMC8294689 DOI: 10.1210/endocr/bqab122] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Indexed: 12/13/2022]
Abstract
The rapid decline of circulating 17β-estradiol (E2) at menopause leads to negative neurological consequences, although hormone therapy paradoxically has both harmful and positive effects depending on the age at which it is delivered. The inconsistent response to E2 suggests unappreciated regulatory mechanisms for estrogen receptors (ERs), and we predicted it could be due to age-related differences in ERβ phosphorylation. We assessed ERβ phosphorylation using a sensitive mass spectrometry approach that provides absolute quantification (AQUA-MS) of individually phosphorylated residues. Specifically, we quantified phosphorylated ERβ in the hippocampus of women (aged 21-83 years) and in a rat model of menopause at 4 residues with conserved sequence homology between the 2 species: S105, S176, S200, and Y488. Phosphorylation at these sites, which spanned all domains of ERβ, were remarkably consistent between the 2 species, showing high levels of S105 phosphorylation (80%-100%) and low levels of S200 (20%-40%). Further, S200 phosphorylation decreased with aging in humans and loss of E2 in rats. Surprisingly, Y488 phosphorylation, which has been linked to ERβ ligand-independent actions, exhibited approximately 70% phosphorylation, unaltered by species, age, or E2, suggesting ERβ's primary mode of action may not require E2 binding. We further show phosphorylation at 2 sites directly altered ERβ DNA-binding efficiency, and thus could affect its transcription factor activity. These findings provide the first absolute quantification of ERβ phosphorylation in the human and rat brain, novel insights into ERβ regulation, and a critical foundation for providing more targeted therapeutic options for menopause in the future.
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Affiliation(s)
- Mengjie Zhang
- Department of Cell and Molecular Physiology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois 60153, USA
| | - Sarah Flury
- Department of Cell and Molecular Physiology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois 60153, USA
| | - Chun K Kim
- Department of Cell and Molecular Physiology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois 60153, USA
| | - Wilson C J Chung
- Department of Biology, Kent State University, Kent, Ohio 44242, USA
| | - Jonathan A Kirk
- Department of Cell and Molecular Physiology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois 60153, USA
| | - Toni R Pak
- Department of Cell and Molecular Physiology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois 60153, USA
- Correspondence: Toni R. Pak, PhD, Department of Cell and Molecular Physiology, Loyola University Chicago Stritch School of Medicine, 2160 S First Ave, CTRE 115-520, Maywood, IL 60153, USA.
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11
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Koebele SV, Hiroi R, Plumley ZMT, Melikian R, Prakapenka AV, Patel S, Carson C, Kirby D, Mennenga SE, Mayer LP, Dyer CA, Bimonte-Nelson HA. Clinically Used Hormone Formulations Differentially Impact Memory, Anxiety-Like, and Depressive-Like Behaviors in a Rat Model of Transitional Menopause. Front Behav Neurosci 2021; 15:696838. [PMID: 34366807 PMCID: PMC8335488 DOI: 10.3389/fnbeh.2021.696838] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 06/04/2021] [Indexed: 01/29/2023] Open
Abstract
A variety of U.S. Food and Drug Administration-approved hormone therapy options are currently used to successfully alleviate unwanted symptoms associated with the changing endogenous hormonal milieu that occurs in midlife with menopause. Depending on the primary indication for treatment, different hormone therapy formulations are utilized, including estrogen-only, progestogen-only, or combined estrogen plus progestogen options. There is little known about how these formulations, or their unique pharmacodynamics, impact neurobiological processes. Seemingly disparate pre-clinical and clinical findings regarding the cognitive effects of hormone therapies, such as the negative effects associated with conjugated equine estrogens and medroxyprogesterone acetate vs. naturally circulating 17β-estradiol (E2) and progesterone, signal a critical need to further investigate the neuro-cognitive impact of hormone therapy formulations. Here, utilizing a rat model of transitional menopause, we administered either E2, progesterone, levonorgestrel, or combinations of E2 with progesterone or with levonorgestrel daily to follicle-depleted, middle-aged rats. A battery of assessments, including spatial memory, anxiety-like behaviors, and depressive-like behaviors, as well as endocrine status and ovarian follicle complement, were evaluated. Results indicate divergent outcomes for memory, anxiety, and depression, as well as unique physiological profiles, that were dependent upon the hormone regimen administered. Overall, the combination hormone treatments had the most consistently favorable profile for the domains evaluated in rats that had undergone experimentally induced transitional menopause and remained ovary-intact. The collective results underscore the importance of investigating variations in hormone therapy formulation as well as the menopause background upon which these formulations are delivered.
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Affiliation(s)
- Stephanie V. Koebele
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Ryoko Hiroi
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Zachary M. T. Plumley
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Ryan Melikian
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Alesia V. Prakapenka
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Shruti Patel
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Catherine Carson
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Destiney Kirby
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Sarah E. Mennenga
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | | | | | - Heather A. Bimonte-Nelson
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
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12
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Koebele SV, Quihuis AM, Lavery CN, Plumley ZMT, Castaneda AJ, Bimonte-Nelson HA. Oestrogen treatment modulates the impact of cognitive experience and task complexity on memory in middle-aged surgically menopausal rats. J Neuroendocrinol 2021; 33:e13002. [PMID: 34378820 PMCID: PMC9124643 DOI: 10.1111/jne.13002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/10/2021] [Accepted: 06/12/2021] [Indexed: 11/28/2022]
Abstract
Menopause has been linked to changes in memory. Oestrogen-containing hormone therapy is prescribed to treat menopause-related symptoms and can ameliorate memory changes, although the parameters impacting oestrogen-related memory efficacy are unclear. Cognitive experience and practice have been shown to be neuroprotective and to improve learning and memory during ageing, with the type of task playing a role in subsequent cognitive outcomes. Whether task complexity matters, and whether these outcomes interact with menopause and oestrogen status, remains unknown. To investigate this, we used a rat model of surgical menopause to systematically assess whether maze task complexity, as well as order of task presentation, impacts spatial learning and memory during middle age when rats received vehicle, low-17β-oestradiol (E2 ) or high-E2 treatment. The direction, and even presence, of the effects of prior maze experience differed depending on the E2 dose. Surgical menopause without E2 treatment yielded the least benefit, as prior maze experience did not have a substantial effect on subsequent task performance for vehicle treated rats regardless of task demand level during the first exposure to maze experience or final testing. High-dose E2 yielded a variable benefit, and low-dose E2 produced the greatest benefit. Specifically, low-dose E2 broadly enhanced learning and memory in surgically menopausal rats that had prior experience on another task, regardless of the complexity level of this prior experience. These results demonstrate that E2 dose influences the impact of prior cognitive experience on learning and memory during ageing, and highlights the importance of prior cognitive experience in subsequent learning and memory outcomes.
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Affiliation(s)
- Stephanie V. Koebele
- Department of Psychology, Arizona State University, Tempe, AZ, USA
- Arizona Alzheimer’s Consortium, Phoenix, AZ, USA
| | - Alicia M. Quihuis
- Department of Psychology, Arizona State University, Tempe, AZ, USA
- Arizona Alzheimer’s Consortium, Phoenix, AZ, USA
| | - Courtney N. Lavery
- Department of Psychology, Arizona State University, Tempe, AZ, USA
- Arizona Alzheimer’s Consortium, Phoenix, AZ, USA
| | - Zachary M. T. Plumley
- Department of Psychology, Arizona State University, Tempe, AZ, USA
- Arizona Alzheimer’s Consortium, Phoenix, AZ, USA
| | - Arthur J. Castaneda
- Department of Psychology, Arizona State University, Tempe, AZ, USA
- Arizona Alzheimer’s Consortium, Phoenix, AZ, USA
| | - Heather A. Bimonte-Nelson
- Department of Psychology, Arizona State University, Tempe, AZ, USA
- Arizona Alzheimer’s Consortium, Phoenix, AZ, USA
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13
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Bimonte-Nelson HA, Bernaud VE, Koebele SV. Menopause, hormone therapy and cognition: maximizing translation from preclinical research. Climacteric 2021; 24:373-381. [PMID: 33977823 DOI: 10.1080/13697137.2021.1917538] [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: 10/21/2022]
Abstract
Menopause-associated and hormone-associated cognitive research has a rich history built from varied disciplines and species. This review discusses landmark rodent and human work addressing cognitive outcomes associated with varied experiences of menopause and hormone therapy. Critical variables in menopause and cognitive aging research are considered, including menopause etiology, background hormone milieu and parameters of exposure to estrogens and progestogens. Recent preclinical research has identified that menopause and ovarian hormone fluctuations across many neurobiological systems affect cognitive aging, mapping novel avenues for future research. Preclinical models provide insight into complex interdisciplinary relationships in a systematic and highly controlled fashion. We highlight that acknowledging the strengths and weaknesses for both preclinical and clinical research approaches is vital to accurate interpretation, optimal translation and the direction of future research. There is great value in collaboration and communication across preclinical and clinical realms, especially regarding reciprocal feedback of findings to advance preclinical models, improve experimental designs and enrich basic science translation to the clinic. In searching for biological mechanisms underlying the cognitive consequences of menopause and hormone therapies, it is noteworthy that clinical and preclinical scientists are grounded in the same fundamental goal of optimizing health outcomes for women across the lifespan.
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Affiliation(s)
- H A Bimonte-Nelson
- Department of Psychology, Arizona State University, Tempe, AZ, USA.,Arizona Alzheimer's Consortium, Phoenix, AZ, USA
| | - V E Bernaud
- Department of Psychology, Arizona State University, Tempe, AZ, USA.,Arizona Alzheimer's Consortium, Phoenix, AZ, USA
| | - S V Koebele
- Department of Psychology, Arizona State University, Tempe, AZ, USA.,Arizona Alzheimer's Consortium, Phoenix, AZ, USA
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14
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Ali M, Saleem U, Anwar F, Imran M, Nadeem H, Ahmad B, Ali T, Ismail T. Screening of Synthetic Isoxazolone Derivative Role in Alzheimer's Disease: Computational and Pharmacological Approach. Neurochem Res 2021; 46:905-920. [PMID: 33486698 DOI: 10.1007/s11064-021-03229-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/16/2020] [Accepted: 01/02/2021] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is age-dependent neurological disorder with progressive loss of cognition and memory. This multifactorial disease is characterized by intracellular neurofibrillary tangles, beta amyloid plaques, neuroinflammation, and increased oxidative stress. The increased cellular manifestations of these markers play a critical role in neurodegeneration and pathogenesis of AD. Therefore, reducing neurodegeneration by decreasing one or more of these markers may provide a potential therapeutic roadmap for the treatment of AD. AD causes a devastating loss of cognition with no conclusive and effective treatment. Many synthetic compound containing isoxazolone nucleus have been reported as neuroprotective agents. The aim of this study was to explore the anti-Alzheimer's potential of a newly synthesized 3,4,5-trimethoxy isoxazolone derivative (TMI) that attenuated the beta amyloid (Aβ1-42) and tau protein levels in streptozotocin (STZ) induced Alzheimer's disease mouse model. Molecular analysis revealed increased beta amyloid (Aβ1-42) protein levels, increased tau protein levels, increased cellular oxidative stress and reduced antioxidant enzymes in STZ exposed mice brains. Furthermore, ELISA and PCR were used to validate the expression of Aβ1-42. Pre-treatment with TMI significantly improved the memory and cognitive behavior along with ameliorated levels of Aβ1-42 proteins. TMI treated mice further showed marked increase in GSH, CAT, SOD levels while decreased levels of acetylcholinesterase inhibitors (AChEI's) and MDA intermediate. The multidimensional nature of isoxazolone derivatives and its versatile affinity towards various targets highpoint its multistep targeting nature. These results indicated the neuroprotective potential of TMI which may be considered for the treatment of neurodegenerative disease specifically in AD.
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Affiliation(s)
- Meissam Ali
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore Campus, 54000, Pakistan
| | - Uzma Saleem
- Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, 38000, Pakistan
| | - Fareeha Anwar
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore Campus, 54000, Pakistan.
| | - Muhammad Imran
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, 44000, Pakistan
| | - Humaira Nadeem
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, 44000, Pakistan
| | - Bashir Ahmad
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore Campus, 54000, Pakistan
| | - Tahir Ali
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore Campus, 54000, Pakistan
| | - Tariq Ismail
- Department of Pharmacy, COMSATS University, Abbottabad, 22060, Pakistan
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15
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Liu H, Wang C, Yu M, Yang Y, He Y, Liu H, Liang C, Tu L, Zhang N, Wang L, Wang J, Liu F, Hu F, Xu Y. TPH2 in the Dorsal Raphe Nuclei Regulates Energy Balance in a Sex-Dependent Manner. Endocrinology 2021; 162:5920173. [PMID: 33034617 PMCID: PMC7685027 DOI: 10.1210/endocr/bqaa183] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Indexed: 12/16/2022]
Abstract
AbstractCentral 5-hydroxytryptamine (5-HT), which is primarily synthesized by tryptophan hydroxylase 2 (TPH2) in the dorsal Raphe nuclei (DRN), plays a pivotal role in the regulation of food intake and body weight. However, the physiological functions of TPH2 on energy balance have not been consistently demonstrated. Here we systematically investigated the effects of TPH2 on energy homeostasis in adult male and female mice. We found that the DRN harbors a similar amount of TPH2+ cells in control male and female mice. Adult-onset TPH2 deletion in the DRN promotes hyperphagia and body weight gain only in male mice, but not in female mice. Ablation of TPH2 reduces hypothalamic pro-opiomelanocortin (POMC) neuronal activity robustly in males, but only to a modest degree in females. Deprivation of estrogen by ovariectomy (OVX) causes comparable food intake and weight gain in female control and DRN-specific TPH2 knockout mice. Nevertheless, disruption of TPH2 blunts the anorexigenic effects of exogenous estradiol (E2) and abolishes E2-induced activation of POMC neurons in OVX female mice, indicating that TPH2 is indispensable for E2 to activate POMC neurons and to suppress appetite. Together, our study revealed that TPH2 in the DRN contributes to energy balance regulation in a sexually dimorphic manner.
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Affiliation(s)
- Hailan Liu
- National Clinical Research Center for Metabolic Diseases, Metabolic Syndrome Research Center, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
| | - Chunmei Wang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
| | - Meng Yu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
| | - Yongjie Yang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
| | - Yang He
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
| | - Hesong Liu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
| | - Chen Liang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
| | - Longlong Tu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
| | - Nan Zhang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
| | - Lina Wang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
| | - Julia Wang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
| | - Feng Liu
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Fang Hu
- National Clinical Research Center for Metabolic Diseases, Metabolic Syndrome Research Center, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Yong Xu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
- Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
- Correspondence: Yong Xu, Children’s Nutrition Research Center, Room8066, 1100 Bates Avenue, Houston, TX 77030, USA. E-mail:
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16
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Koebele SV, Mennenga SE, Poisson ML, Hewitt LT, Patel S, Mayer LP, Dyer CA, Bimonte-Nelson HA. Characterizing the effects of tonic 17β-estradiol administration on spatial learning and memory in the follicle-deplete middle-aged female rat. Horm Behav 2020; 126:104854. [PMID: 32949557 PMCID: PMC8032560 DOI: 10.1016/j.yhbeh.2020.104854] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 09/09/2020] [Accepted: 09/10/2020] [Indexed: 01/19/2023]
Abstract
17β-estradiol (E2)-containing hormone therapy is a safe, effective way to alleviate unwanted menopause symptoms. Preclinical research has focused upon the role of E2 in learning and memory using a surgically menopausal rodent model whereby the ovaries are removed. Given that most women retain their reproductive tract and undergo a natural menopause transition, it is necessary to understand how exogenous E2 impacts a structurally intact, but follicle-deplete, system. In the current study, 8 month old female rats were administered the ovatoxin 4-vinylcyclohexene diepoxide (VCD), which accelerates ovarian follicular depletion, to model the human menopause transition. After follicular depletion, at 11 months old, rats were administered Vehicle or tonic E2 treatment for 12 days prior to behavioral evaluation on spatial working and reference memory tasks. Results demonstrated that E2 had both enhancing and impairing effects on taxed working memory depending upon the learning or retention phases of the water radial-arm maze, with no impact on reference memory. Relationships between memory scores and circulating estrogen levels were specific to follicle-depleted rats without E2 treatment. Collectively, findings demonstrate the complexity of E2 administration in a follicle-depleted background, with cognitive effects specific to working memory; furthermore, E2 administration altered circulating hormonal milieu and relationships between hormone profiles and memory. In sum, menopausal etiology impacts the parameters of E2 effects on cognition, complementing prior work with other estrogen compounds. Deciphering estrogenic actions in a system wherein the reproductive tract remains intact with follicle-depleted ovaries, thus modeling the majority or menopausal women, is critical for translational perspectives.
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Affiliation(s)
- Stephanie V Koebele
- Department of Psychology, Arizona State University, Tempe, AZ 85287, United States of America; Arizona Alzheimer's Consortium, Phoenix, AZ 85006, United States of America
| | - Sarah E Mennenga
- Department of Psychology, Arizona State University, Tempe, AZ 85287, United States of America; Arizona Alzheimer's Consortium, Phoenix, AZ 85006, United States of America
| | - Mallori L Poisson
- Department of Psychology, Arizona State University, Tempe, AZ 85287, United States of America; Arizona Alzheimer's Consortium, Phoenix, AZ 85006, United States of America
| | - Lauren T Hewitt
- Department of Psychology, Arizona State University, Tempe, AZ 85287, United States of America; Arizona Alzheimer's Consortium, Phoenix, AZ 85006, United States of America
| | - Shruti Patel
- Department of Psychology, Arizona State University, Tempe, AZ 85287, United States of America; Arizona Alzheimer's Consortium, Phoenix, AZ 85006, United States of America
| | | | - Cheryl A Dyer
- FYXX Foundation, Flagstaff, AZ, United States of America
| | - Heather A Bimonte-Nelson
- Department of Psychology, Arizona State University, Tempe, AZ 85287, United States of America; Arizona Alzheimer's Consortium, Phoenix, AZ 85006, United States of America.
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17
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Cao LB, Leung CK, Law PWN, Lv Y, Ng CH, Liu HB, Lu G, Ma JL, Chan WY. Systemic changes in a mouse model of VCD-induced premature ovarian failure. Life Sci 2020; 262:118543. [PMID: 33038381 DOI: 10.1016/j.lfs.2020.118543] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/29/2020] [Accepted: 09/29/2020] [Indexed: 02/07/2023]
Abstract
AIMS Premature ovarian failure (POF) is a phenomenon in which the ovaries fail before the age of 40 years. Prior research has used a wide range of mouse models designed to reflect different causes of POF, including genetic factors, iatrogenic factors, and immune factors. The current study employed a mouse model of POF induced by 4-vinylcyclohexene diepoxide (VCD). VCD can specifically kill primordial and primary ovarian follicles, which destroys the follicular reserve and causes POF. The current study sought to specify and extend the applications of this model by examining the effect of timing and VCD dose and by exploring the effect of the model on systems outside of the ovaries. MATERIALS AND METHODS A VCD-induced mouse model of POF was constructed using established methods (VCD injected continuously at a concentration of 160 mg/kg for 15 days). Evidence for a graded effect of VCD was observed using a range of concentrations, and the best windows for examining VCD's effects on follicles and associated tissues were identified. KEY FINDINGS The mouse model used here successfully simulated two common complications of POF - emotional changes and decreased bone density. The model's application was then extended to examine the links between disease and intestinal microorganisms, and evidence was found linking POF to the reproductively relevant composition of the gut microbiota. SIGNIFICANCE These findings provide novel methodological guidance for future research, and they significantly extend the applications and scope of VCD-induced POF mouse models.
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Affiliation(s)
- Lian Bao Cao
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250001, China; CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, Shandong 250001, China
| | - Chi Kwan Leung
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250001, China; CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, Shandong 250001, China; SDIVF R&D Centre, Hong Kong Science and Technology Parks, Shatin, Hong Kong, China
| | - Patrick Wai-Nok Law
- CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, Shandong 250001, China
| | - Yue Lv
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250001, China; CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, Shandong 250001, China
| | - Cheuk-Hei Ng
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250001, China; CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, Shandong 250001, China; SDIVF R&D Centre, Hong Kong Science and Technology Parks, Shatin, Hong Kong, China
| | - Hong Bin Liu
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250001, China; CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, Shandong 250001, China; SDIVF R&D Centre, Hong Kong Science and Technology Parks, Shatin, Hong Kong, China
| | - Gang Lu
- CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, Shandong 250001, China.
| | - Jin Long Ma
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250001, China; CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, Shandong 250001, China; SDIVF R&D Centre, Hong Kong Science and Technology Parks, Shatin, Hong Kong, China
| | - Wai Yee Chan
- CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, Shandong 250001, China.
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18
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Kirshner ZZ, Yao JK, Li J, Long T, Nelson D, Gibbs RB. Impact of estrogen receptor agonists and model of menopause on enzymes involved in brain metabolism, acetyl-CoA production and cholinergic function. Life Sci 2020; 256:117975. [PMID: 32565251 PMCID: PMC7448522 DOI: 10.1016/j.lfs.2020.117975] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 06/11/2020] [Accepted: 06/12/2020] [Indexed: 12/18/2022]
Abstract
Our goal is to understand how loss of circulating estrogens and estrogen replacement affect brain physiology and function, particularly in brain regions involved in cognitive processes. We recently conducted a large metabolomics study characterizing the effects of rodent models of menopause and treatment with estrogen receptor (ER) agonists on neurochemical targets in hippocampus, frontal cortex, and striatum. Here we characterize effects on levels of several key enzymes involved in glucose utilization and energy production, specifically phosphofructokinase, glyceraldehyde 3-phosphate dehydrogenase, and pyruvate dehydrogenase. We also evaluated effects on levels of β-actin and α-tubulin, choline acetyltransferase (ChAT) activity, and levels of ATP citrate lyase. All experiments were conducted in young adult rats. Experiment 1 compared the effects of ovariectomy (OVX), a model of surgical menopause, and 4-vinylcyclohexene diepoxide (VCD)-treatments, a model of transitional menopause, with tissues collected at proestrus and at diestrus. Experiment 2 used a separate cohort of rats to evaluate the same targets in OVX and VCD-treated rats treated with estradiol or with selective ER agonists. Differences in the expression of metabolic enzymes between cycling animals and models of surgical and transitional menopause were detected. These differences were model-, region- and time- dependent, and were modulated by selective ER agonists. Collectively, the findings demonstrate that loss of ovarian function and ER agonist treatments have differing effects in OVX vs. VCD-treated rats. Differences may help to explain differences in the effects of estrogen treatments on brain function and cognition in women who have experienced surgical vs. transitional menopause.
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Affiliation(s)
- Z Z Kirshner
- University of Pittsburgh, Department of Pharmaceutical Sciences, 1004 Salk Hall, Pittsburgh, PA 15261, USA.
| | - Jeffrey K Yao
- University of Pittsburgh, Department of Pharmaceutical Sciences, 1004 Salk Hall, Pittsburgh, PA 15261, USA.
| | - Junyi Li
- University of Pittsburgh, Department of Pharmaceutical Sciences, 1004 Salk Hall, Pittsburgh, PA 15261, USA.
| | - Tao Long
- University of Pittsburgh, Department of Pharmaceutical Sciences, 1004 Salk Hall, Pittsburgh, PA 15261, USA.
| | - Doug Nelson
- University of Pittsburgh, Department of Pharmaceutical Sciences, 1004 Salk Hall, Pittsburgh, PA 15261, USA.
| | - R B Gibbs
- University of Pittsburgh, Department of Pharmaceutical Sciences, 1004 Salk Hall, Pittsburgh, PA 15261, USA.
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19
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Brown AMC, Gervais NJ. Role of Ovarian Hormones in the Modulation of Sleep in Females Across the Adult Lifespan. Endocrinology 2020; 161:5879359. [PMID: 32735650 PMCID: PMC7450669 DOI: 10.1210/endocr/bqaa128] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 07/22/2020] [Indexed: 12/13/2022]
Abstract
Ovarian hormones, including 17β-estradiol, are implicated in numerous physiological processes, including sleep. Beginning at puberty, girls report more sleep complaints than boys, which is maintained throughout the reproductive life stage. Sleep problems are exacerbated during the menopausal transition, evidenced by greater risk for sleep disorders. There is emerging evidence that menopause-associated hormone loss contributes to this elevated risk, but age is also an important factor. The extent to which menopause-associated sleep disturbance persists into postmenopause above and beyond the effects of age remains unknown. Untreated sleep disturbances have important implications for cognitive health, as they are emerging as risk factors for dementia. Given that sleep loss impairs memory, an important knowledge gap concerns the role played by menopause-associated hormone loss in exacerbating sleep disturbance and, ultimately, cognitive function in aging women. In this review, we take a translational approach to illustrate the contribution of ovarian hormones in maintaining the sleep-wake cycle in younger and middle-aged females, with evidence implicating 17β-estradiol in supporting the memory-promoting effects of sleep. Sleep physiology is briefly reviewed before turning to behavioral and neural evidence from young females linking 17β-estradiol to sleep-wake cycle maintenance. Implications of menopause-associated 17β-estradiol loss is also reviewed before discussing how ovarian hormones may support the memory-promoting effects of sleep, and why menopause may exacerbate pathological aging via effects on sleep. While still in its infancy, this research area offers a new sex-based perspective on aging research, with a focus on a modifiable risk factor for pathological aging.
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Affiliation(s)
- Alana M C Brown
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada
| | - Nicole J Gervais
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada
- Correspondence: Nicole J. Gervais, University of Toronto, Department of Psychology, 100 St. George Street, Toronto, ON, Canada M5S 3G3. E-mail:
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