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Conrad CD, Peay DN, Acuña AM, Whittaker K, Donnay ME. Corticosterone disrupts spatial working memory during retention testing when highly taxed, which positively correlates with depressive-like behavior in middle-aged, ovariectomized female rats. Horm Behav 2024; 164:105600. [PMID: 39003890 PMCID: PMC11330725 DOI: 10.1016/j.yhbeh.2024.105600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 07/03/2024] [Accepted: 07/03/2024] [Indexed: 07/16/2024]
Abstract
Major Depressive Disorder affects 8.4 % of the U.S. population, particularly women during perimenopause. This study implemented a chronic corticosterone manipulation (CORT, a major rodent stress hormone) using middle-aged, ovariectomized female rats to investigate depressive-like behavior, anxiety-like symptoms, and cognitive ability. CORT (400 μg/ml, in drinking water) was administered for four weeks before behavioral testing began and continued throughout all behavioral assessments. Compared to vehicle-treated rats, CORT significantly intensified depressive-like behaviors: CORT decreased sucrose preference, enhanced immobility on the forced swim test, and decreased sociability on a choice task between a novel conspecific female rat and an inanimate object. Moreover, CORT enhanced anxiety-like behavior on a marble bury task by reducing time investigating tabasco-topped marbles. No effects were observed on novelty suppressed feeding or the elevated plus maze. For spatial working memory using an 8-arm radial arm maze, CORT did not alter acquisition but disrupted performance during retention. CORT enhanced the errors committed during the highest working memory load following a delay and during the last trial requiring the most items to remember; this cognitive metric positively correlated with a composite depressive-like score to reveal that as depressive-like symptoms increased, cognitive performance worsened. This protocol allowed for the inclusion of multiple behavioral assessments without stopping the CORT treatment needed to produce a MDD phenotype and to assess a battery of behaviors. Moreover, that when middle-age was targeted, chronic CORT produced a depressive-like phenotype in ovariectomized females, who also comorbidly expressed aspects of anxiety and cognitive dysfunction.
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Affiliation(s)
- Cheryl D Conrad
- Arizona State University, Department of Psychology, Box 1104, Tempe 85287, AZ, United States.
| | - Dylan N Peay
- Arizona State University, Department of Psychology, Box 1104, Tempe 85287, AZ, United States
| | - Amanda M Acuña
- Arizona State University, Department of Psychology, Box 1104, Tempe 85287, AZ, United States
| | - Kennedy Whittaker
- Arizona State University, Department of Psychology, Box 1104, Tempe 85287, AZ, United States
| | - Megan E Donnay
- Arizona State University, Department of Psychology, Box 1104, Tempe 85287, AZ, United States
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2
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Herrera-Pérez JJ, Hernández-Hernández OT, Flores-Ramos M, Cueto-Escobedo J, Rodríguez-Landa JF, Martínez-Mota L. The intersection between menopause and depression: overview of research using animal models. Front Psychiatry 2024; 15:1408878. [PMID: 39081530 PMCID: PMC11287658 DOI: 10.3389/fpsyt.2024.1408878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 06/28/2024] [Indexed: 08/02/2024] Open
Abstract
Menopausal women may experience symptoms of depression, sometimes even progressing clinical depression requiring treatment to improve quality of life. While varying levels of estrogen in perimenopause may contribute to an increased biological vulnerability to mood disturbances, the effectiveness of estrogen replacement therapy (ERT) in the relief of depressive symptoms remains controversial. Menopausal depression has a complex, multifactorial etiology, that has limited the identification of optimal treatment strategies for the management of this psychiatric complaint. Nevertheless, clinical evidence increasingly supports the notion that estrogen exerts neuroprotective effects on brain structures related to mood regulation. Indeed, research using preclinical animal models continues to improve our understanding of menopause and the effectiveness of ERT and other substances at treating depression-like behaviors. However, questions regarding the efficacy of ERT in perimenopause have been raised. These questions may be answered by further investigation using specific animal models of reduced ovarian function. This review compares and discusses the advantages and pitfalls of different models emulating the menopausal stages and their relationship with the onset of depressive-like signs, as well as the efficacy and mechanisms of conventional and novel ERTs in treating depressive-like behavior. Ovariectomized young rats, middle-to-old aged intact rats, and females treated with reprotoxics have all been used as models of menopause, with stages ranging from surgical menopause to perimenopause. Additionally, this manuscript discusses the impact of organistic and therapeutic variables that may improve or reduce the antidepressant response of females to ERT. Findings from these models have revealed the complexity of the dynamic changes occurring in brain function during menopausal transition, reinforcing the idea that the best approach is timely intervention considering the opportunity window, in addition to the careful selection of treatment according to the presence or absence of reproductive tissue. Additionally, data from animal models has yielded evidence to support new promising estrogens that could be considered as ERTs with antidepressant properties and actions in endocrine situations in which traditional ERTs are not effective.
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Affiliation(s)
- José Jaime Herrera-Pérez
- Laboratorio de Farmacología Conductual, Dirección de Investigaciones en Neurociencias, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Mexico City, Mexico
| | - Olivia Tania Hernández-Hernández
- Consejo Nacional de Humanidades, Ciencias y Tecnologías Research Fellow. Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Mexico City, Mexico
| | - Mónica Flores-Ramos
- Subdirección de Investigaciones Clínicas, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Mexico City, Mexico
| | - Jonathan Cueto-Escobedo
- Departamento de Investigación Clínica, Instituto de Ciencias de la Salud, Universidad Veracruzana, Xalapa-Enríquez, Mexico
| | | | - Lucía Martínez-Mota
- Laboratorio de Farmacología Conductual, Dirección de Investigaciones en Neurociencias, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Mexico City, Mexico
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Metcalf CA, Duffy KA, Page CE, Novick AM. Cognitive Problems in Perimenopause: A Review of Recent Evidence. Curr Psychiatry Rep 2023; 25:501-511. [PMID: 37755656 PMCID: PMC10842974 DOI: 10.1007/s11920-023-01447-3] [Citation(s) in RCA: 2] [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] [Accepted: 08/08/2023] [Indexed: 09/28/2023]
Abstract
PURPOSE OF REVIEW To review recent research regarding cognitive problems during perimenopause, including which menopause-related symptoms, demographic variables, stress exposures, and neural biomarkers are associated with cognitive problems and which interventions demonstrate efficacy at improving cognitive performance. RECENT FINDINGS Cognitive problems are common during perimenopause and have a significant impact on a substantial proportion of women. Evidence continues to indicate that verbal learning and verbal memory are the cognitive functions that are most negatively affected during perimenopause, and new research suggests that perimenopause may also be associated with deficits in processing speed, attention, and working memory. Recent research suggests that the cognitive profiles of women transitioning through perimenopause are heterogenous - with some showing strengths and others demonstrating weaknesses in particular cognitive domains. Depression, sleep problems, and vasomotor symptoms in perimenopause may be associated with cognitive difficulties. Recent neuroimaging studies are identifying changes in activity patterns within brain regions that correlate with cognitive performance in perimenopause, but future causal studies are needed to understand the neural mechanisms of cognitive problems during this time. Although clinical treatment studies for cognitive concerns have historically focused on postmenopause, some small trials in perimenopausal samples have been conducted recently but are frequently underpowered. Current guidelines from the North American Menopause Society do not support the use of hormone therapy at any age for cognitive problems. Animal research demonstrates that estradiol and levonorgestrel combined may alleviate working memory problems. Much progress has been made in understanding how perimenopause impacts cognition, and more research is needed to better identify who is at highest risk and how to meaningfully prevent and alleviate cognitive problems during this reproductive stage. Larger-scale randomized intervention trials specifically during perimenopause are urgently needed to address cognitive concerns in this population of women. More consistent reproductive staging, inclusion of covariates, and analyses examining perimenopause specifically would improve study quality and the ability to draw clear conclusions from this research.
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Affiliation(s)
- Christina A Metcalf
- Department of Psychiatry, University of Colorado Anschutz Medical Campus, 1890 N. Revere Court MS F546, Aurora, CO, 80045, USA.
| | - Korrina A Duffy
- Department of Psychiatry, University of Colorado Anschutz Medical Campus, 1890 N. Revere Court MS F546, Aurora, CO, 80045, USA
| | - Chloe E Page
- Department of Psychiatry, University of Colorado Anschutz Medical Campus, 1890 N. Revere Court MS F546, Aurora, CO, 80045, USA
| | - Andrew M Novick
- Department of Psychiatry, University of Colorado Anschutz Medical Campus, 1890 N. Revere Court MS F546, Aurora, CO, 80045, USA
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Bernaud VE, Koebele SV, Northup-Smith SN, Willeman MN, Barker C, Schatzki-Lumpkin A, Sanchez MV, Bimonte-Nelson HA. Evaluations of memory, anxiety, and the growth factor IGF-1R after post-surgical menopause treatment with a highly selective progestin. Behav Brain Res 2023; 448:114442. [PMID: 37085118 PMCID: PMC11105077 DOI: 10.1016/j.bbr.2023.114442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 04/16/2023] [Accepted: 04/18/2023] [Indexed: 04/23/2023]
Abstract
Progestogens are a key component of menopausal hormone therapies. While some progestogens can be detrimental to cognition, there is preclinical evidence that progestogens with a strong progesterone-receptor affinity benefit some molecular mechanisms believed to underlie cognitive function. Thus, a progestin that maximizes progesterone-receptor affinity and minimizes affinities to other receptors may be cognitively beneficial. We evaluated segesterone-acetate (SGA), a 19-norprogesterone derivative with a strong progesterone-receptor affinity and no androgenic or estrogenic-receptor activity, hypothesizing that it would enhance cognition. Middle-aged rats underwent Sham or Ovariectomy (Ovx) surgery followed by administration of medroxyprogesterone-acetate (MPA; used as a positive control as we have previously shown MPA-induced cognitive deficits), SGA (low or high dose), or vehicle (one Sham and one Ovx group). Spatial working and reference memory, delayed retention, and anxiety-like behavior were assessed, as were memory- and hormone- related protein assays within the frontal cortex, dorsal hippocampus, and entorhinal cortex. Low-dose SGA impaired spatial working memory, while high-dose SGA had a more extensive detrimental impact, negatively affecting spatial reference memory and delayed retention. Replicating previous findings, MPA impaired spatial reference memory and delayed retention. SGA, but not MPA, alleviated Ovx-induced anxiety-like behaviors. On two working memory measures, IGF-1R expression correlated with better working memory only in rats without hormone manipulation; any hormone manipulation or combination of hormone manipulations used herein altered this relationship. These findings suggest that SGA impairs spatial cognition after surgical menopause, and that surgical menopause with or without progestin administration disrupts relationships between a growth factor critical to neuroplasticity.
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Affiliation(s)
- Victoria E Bernaud
- Department of Psychology, Arizona State University, 950 S. McAllister Ave., Tempe, AZ 85287, USA; Arizona Alzheimer's Consortium, 4745 N 7th St, Phoenix, AZ 85014, USA
| | - Stephanie V Koebele
- Department of Psychology, Arizona State University, 950 S. McAllister Ave., Tempe, AZ 85287, USA; Arizona Alzheimer's Consortium, 4745 N 7th St, Phoenix, AZ 85014, USA
| | - Steven N Northup-Smith
- Department of Psychology, Arizona State University, 950 S. McAllister Ave., Tempe, AZ 85287, USA; Arizona Alzheimer's Consortium, 4745 N 7th St, Phoenix, AZ 85014, USA
| | - Mari N Willeman
- Department of Psychology, Arizona State University, 950 S. McAllister Ave., Tempe, AZ 85287, USA; Arizona Alzheimer's Consortium, 4745 N 7th St, Phoenix, AZ 85014, USA; TGen Institute, 445 N 5th St, Phoenix, AZ 85004, USA
| | - Charlotte Barker
- Department of Psychology, Arizona State University, 950 S. McAllister Ave., Tempe, AZ 85287, USA; Arizona Alzheimer's Consortium, 4745 N 7th St, Phoenix, AZ 85014, USA
| | - Alex Schatzki-Lumpkin
- Department of Psychology, Arizona State University, 950 S. McAllister Ave., Tempe, AZ 85287, USA; Arizona Alzheimer's Consortium, 4745 N 7th St, Phoenix, AZ 85014, USA
| | - Maria Valenzuela Sanchez
- Department of Psychology, Arizona State University, 950 S. McAllister Ave., Tempe, AZ 85287, USA; Arizona Alzheimer's Consortium, 4745 N 7th St, Phoenix, AZ 85014, USA
| | - Heather A Bimonte-Nelson
- Department of Psychology, Arizona State University, 950 S. McAllister Ave., Tempe, AZ 85287, USA; Arizona Alzheimer's Consortium, 4745 N 7th St, Phoenix, AZ 85014, USA.
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Sałaciak K, Koszałka A, Lustyk K, Żmudzka E, Jagielska A, Pytka K. Memory impairments in rodent depression models: A link with depression theories. Prog Neuropsychopharmacol Biol Psychiatry 2023; 125:110774. [PMID: 37088171 DOI: 10.1016/j.pnpbp.2023.110774] [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: 01/13/2023] [Revised: 04/11/2023] [Accepted: 04/20/2023] [Indexed: 04/25/2023]
Abstract
More than 80% of depressed patients struggle with learning new tasks, remembering positive events, or concentrating on a single topic. These neurocognitive deficits accompanying depression may be linked to functional and structural changes in the prefrontal cortex and hippocampus. However, their mechanisms are not yet completely understood. We conducted a narrative review of articles regarding animal studies to assess the state of knowledge. First, we argue the contribution of changes in neurotransmitters and hormone levels in the pathomechanism of cognitive dysfunction in animal depression models. Then, we used numerous neuroinflammation studies to explore its possible implication in cognitive decline. Encouragingly, we also observed a positive correlation between increased oxidative stress and a depressive-like state with concomitant memory deficits. Finally, we discuss the undeniable role of neurotrophin deficits in developing cognitive decline in animal models of depression. This review reveals the complexity of depression-related memory impairments and highlights the potential clinical importance of gathered findings for developing more reliable animal models and designing novel antidepressants with procognitive properties.
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Affiliation(s)
- Kinga Sałaciak
- Department of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, Krakow 30-688, Poland
| | - Aleksandra Koszałka
- Department of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, Krakow 30-688, Poland
| | - Klaudia Lustyk
- Department of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, Krakow 30-688, Poland
| | - Elżbieta Żmudzka
- Department of Social Pharmacy, Faculty of Pharmacy, Jagiellonian University Medical College Medyczna, 9 Street, Kraków 30-688, Poland
| | - Angelika Jagielska
- Department of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, Krakow 30-688, Poland
| | - Karolina Pytka
- Department of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, Krakow 30-688, Poland.
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6
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Griksiene R, Monciunskaite R, Ruksenas O. What is there to know about the effects of progestins on the human brain and cognition? Front Neuroendocrinol 2022; 67:101032. [PMID: 36029852 DOI: 10.1016/j.yfrne.2022.101032] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/24/2022] [Accepted: 08/19/2022] [Indexed: 12/27/2022]
Abstract
Progestins are an important component of hormonal contraceptives (HCs) and hormone replacement therapies (HRTs). Despite an increasing number of studies elucidating the effects of HCs and HRTs, little is known about the effects of different types of progestins included in these medications on the brain. Animal studies suggest that various progestins interact differently with sex steroid, mineralocorticoid and glucocorticoid receptors and have specific modulatory effects on neurotransmitter systems and on the expression of neuropeptides, suggesting differential impacts on cognition and behavior. This review focuses on the currently available knowledge from human behavioral and neuroimaging studies pooled with evidence from animal research regarding the effects of progestins on the brain. The reviewed information is highly relevant for improving women's mental health and making informed choices regarding specific types of contraception or treatment.
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Affiliation(s)
- Ramune Griksiene
- Department of Neurobiology and Biophysics, Life Sciences Center, Vilnius University, Lithuania
| | - Rasa Monciunskaite
- Department of Neurobiology and Biophysics, Life Sciences Center, Vilnius University, Lithuania
| | - Osvaldas Ruksenas
- Department of Neurobiology and Biophysics, Life Sciences Center, Vilnius University, Lithuania
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7
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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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8
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Vrontou S, Bédécarrats A, Wei X, Ayodeji M, Brassai A, Molnár L, Mody I. Altered brain rhythms and behaviour in the accelerated ovarian failure mouse model of human menopause. Brain Commun 2022; 4:fcac166. [PMID: 35794872 PMCID: PMC9253886 DOI: 10.1093/braincomms/fcac166] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 03/30/2022] [Accepted: 06/20/2022] [Indexed: 11/14/2022] Open
Abstract
To date, potential mechanisms of menopause-related memory and cognitive deficits have not been elucidated. Therefore, we studied brain oscillations, their phase–amplitude coupling, sleep and vigilance state patterns, running wheel use and other behavioural measures in a translationally valid mouse model of menopause, the 4-vinylcyclohexene-diepoxide-induced accelerated ovarian failure. After accelerated ovarian failure, female mice show significant alterations in brain rhythms, including changes in the frequencies of θ (5–12 Hz) and γ (30–120 Hz) oscillations, a reversed phase–amplitude coupling, altered coupling of hippocampal sharp-wave ripples to medial prefrontal cortical sleep spindles and reduced δ oscillation (0.5–4 Hz) synchrony between the two regions during non-rapid eye movement sleep. In addition, we report on significant circadian variations in the frequencies of θ and γ oscillations, and massive synchronous δ oscillations during wheel running. Our results reveal novel and specific network alterations and feasible signs for diminished brain connectivity in the accelerated ovarian failure mouse model of menopause. Taken together, our results may have identified changes possibly responsible for some of the memory and cognitive deficits previously described in this model. Corresponding future studies in menopausal women could shed light on fundamental mechanisms underlying the neurological and psychiatric comorbidities present during this important transitional phase in women’s lives.
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Affiliation(s)
- Sophia Vrontou
- Department of Neurology, The David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
| | - Alexis Bédécarrats
- Department of Neurology, The David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
| | - Xiaofei Wei
- Department of Neurology, The David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
| | | | - Attila Brassai
- Department of Pharmacology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology , Târgu Mureş 540139 , Romania
| | - László Molnár
- Department of Electrical Engineering, Sapientia Hungarian University of Transylvania , Târgu Mureş 540485 , Romania
| | - Istvan Mody
- Department of Neurology, The David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
- Department of Physiology, The David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
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9
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Gilfarb RA, Leuner B. GABA System Modifications During Periods of Hormonal Flux Across the Female Lifespan. Front Behav Neurosci 2022; 16:802530. [PMID: 35783228 PMCID: PMC9245048 DOI: 10.3389/fnbeh.2022.802530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 02/21/2022] [Indexed: 01/10/2023] Open
Abstract
The female lifespan is marked by periods of dramatic hormonal fluctuation. Changes in the ovarian hormones estradiol and progesterone, in addition to the progesterone metabolite allopregnanolone, are among the most significant and have been shown to have widespread effects on the brain. This review summarizes current understanding of alterations that occur within the GABA system during the major hormonal transition periods of puberty, the ovarian cycle, pregnancy and the postpartum period, as well as reproductive aging. The functional impacts of altered inhibitory activity during these times are also discussed. Lastly, avenues for future research are identified, which, if pursued, can broaden understanding of the GABA system in the female brain and potentially lead to better treatments for women experiencing changes in brain function at each of these hormonal transition periods.
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Affiliation(s)
- Rachel A. Gilfarb
- Neuroscience Graduate Program, The Ohio State University, Columbus, OH, United States
| | - Benedetta Leuner
- Department of Psychology, The Ohio State University, Columbus, OH, United States
- Department of Neuroscience, The Ohio State University, Columbus, OH, United States
- *Correspondence: Benedetta Leuner,
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Koebele SV, Poisson ML, Palmer JM, Berns-Leone C, Northup-Smith SN, Peña VL, Strouse IM, Bulen HL, Patel S, Croft C, Bimonte-Nelson HA. Evaluating the Cognitive Impacts of Drospirenone, a Spironolactone-Derived Progestin, Independently and in Combination With Ethinyl Estradiol in Ovariectomized Adult Rats. Front Neurosci 2022; 16:885321. [PMID: 35692432 PMCID: PMC9177129 DOI: 10.3389/fnins.2022.885321] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 04/14/2022] [Indexed: 11/15/2022] Open
Abstract
Oral contraceptives and hormone therapies require a progestogen component to prevent ovulation, curtail uterine hyperplasia, and reduce gynecological cancer risk. Diverse classes of synthetic progestogens, called progestins, are used as natural progesterone alternatives due to progesterone’s low oral bioavailability. Progesterone and several synthetic analogs can negatively impact cognition and reverse some neuroprotective estrogen effects. Here, we investigate drospirenone, a spironolactone-derived progestin, which has unique pharmacological properties compared to other clinically-available progestins and natural progesterone, for its impact on spatial memory, anxiety-like behavior, and brain regions crucial to these cognitive tasks. Experiment 1 assessed three drospirenone doses in young adult, ovariectomized rats, and found that a moderate drospirenone dose benefited spatial memory. Experiment 2 investigated this moderate drospirenone dose with and without concomitant ethinyl estradiol (EE) treatment, the most common synthetic estrogen in oral contraceptives. Results demonstrate that the addition of EE to drospirenone administration reversed the beneficial working memory effects of drospirenone. The hippocampus, entorhinal cortex, and perirhinal cortex were then probed for proteins known to elicit estrogen- and progestin- mediated effects on learning and memory, including glutamate decarboxylase (GAD)65, GAD67, and insulin-like growth factor receptor protein expression, using western blot. EE increased GAD expression in the perirhinal cortex. Taken together, results underscore the necessity to consider the distinct cognitive and neural impacts of clinically-available synthetic estrogen and progesterone analogs, and why they produce unique cognitive profiles when administered together compared to those observed when each hormone is administered separately.
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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
| | - Mallori L. Poisson
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Justin M. Palmer
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Claire Berns-Leone
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Steven N. Northup-Smith
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Veronica L. Peña
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Isabel M. Strouse
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Haidyn L. Bulen
- 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
| | - Corissa Croft
- 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
- *Correspondence: Heather A. Bimonte-Nelson,
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