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Myers AM, Bowen SE, Brummelte S. Maternal care behavior and physiology moderate offspring outcomes following gestational exposure to opioids. Dev Psychobiol 2023; 65:e22433. [PMID: 38010303 DOI: 10.1002/dev.22433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 08/31/2023] [Accepted: 09/29/2023] [Indexed: 11/29/2023]
Abstract
The opioid epidemic has resulted in a drastic increase in gestational exposure to opioids. Opioid-dependent pregnant women are typically prescribed medications for opioid use disorders ("MOUD"; e.g., buprenorphine [BUP]) to mitigate the harmful effects of abused opioids. However, the consequences of exposure to synthetic opioids, particularly BUP, during gestation on fetal neurodevelopment and long-term outcomes are poorly understood. Further, despite the known adverse effects of opioids on maternal care, many preclinical and clinical studies investigating the effects of gestational opioid exposure on offspring outcomes fail to report on maternal care behaviors. Considering that offspring outcomes are heavily dependent upon the quality of maternal care, it is important to evaluate the effects of gestational opioid exposure in the context of the mother-infant dyad. This review compares offspring outcomes after prenatal opioid exposure and after reduced maternal care and integrates this information to potentially identify common underlying mechanisms. We explore whether adverse outcomes after gestational BUP exposure are due to direct effects of opioids in utero, deficits in maternal care, or a combination of both factors. Finally, suggestions for improving preclinical models of prenatal opioid exposure are provided to promote more translational studies that can help to improve clinical outcomes for opioid-dependent mothers.
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Affiliation(s)
- Abigail M Myers
- Department of Psychology, Wayne State University, Detroit, Michigan, USA
| | - Scott E Bowen
- Department of Psychology, Wayne State University, Detroit, Michigan, USA
- Translational Neuroscience Program, Wayne State University, Detroit, Michigan, USA
| | - Susanne Brummelte
- Department of Psychology, Wayne State University, Detroit, Michigan, USA
- Translational Neuroscience Program, Wayne State University, Detroit, Michigan, USA
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2
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Vassoler FM, Wimmer ME. Consequences of Parental Opioid Exposure on Neurophysiology, Behavior, and Health in the Next Generations. Cold Spring Harb Perspect Med 2021; 11:a040436. [PMID: 32601130 PMCID: PMC8485740 DOI: 10.1101/cshperspect.a040436] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Substance abuse and the ongoing opioid epidemic represents a large societal burden. This review will consider the long-term impact of opioid exposure on future generations. Prenatal, perinatal, and preconception exposure are reviewed with discussion of both maternal and paternal influences. Opioid exposure can have long-lasting effects on reproductive function, gametogenesis, and germline epigenetic programming, which can influence embryogenesis and alter the developmental trajectory of progeny. The potential mechanisms by which preconception maternal and paternal opioid exposure produce deleterious consequences on the health, behavior, and physiology of offspring that have been identified by clinical and animal studies will be discussed. The timing, nature, dosing, and duration of prenatal opioid exposure combined with other important environmental considerations influence the extent to which these manipulations affect parents and their progeny. Epigenetic inheritance refers to the transmission of environmental insults across generations via mechanisms independent of the DNA sequence. This topic will be further explored in the context of prenatal, perinatal, and preconception opioid exposure for both the maternal and paternal lineage.
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Affiliation(s)
- Fair M Vassoler
- Tufts University, Cummings School of Veterinary Medicine, Grafton, Massachusetts 01536, USA
| | - Mathieu E Wimmer
- Department of Psychology and Program in Neuroscience, Temple University, Philadelphia, Pennsylvania 19122, USA
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3
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Alipio JB, Brockett AT, Fox ME, Tennyson SS, deBettencourt CA, El-Metwally D, Francis NA, Kanold PO, Lobo MK, Roesch MR, Keller A. Enduring consequences of perinatal fentanyl exposure in mice. Addict Biol 2021; 26:e12895. [PMID: 32187805 PMCID: PMC7897444 DOI: 10.1111/adb.12895] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 02/28/2020] [Accepted: 02/29/2020] [Indexed: 12/14/2022]
Abstract
Opioid use by pregnant women is an understudied consequence associated with the opioid epidemic, resulting in a rise in the incidence of neonatal opioid withdrawal syndrome (NOWS) and lifelong neurobehavioral deficits that result from perinatal opioid exposure. There are few preclinical models that accurately recapitulate human perinatal drug exposure and few focus on fentanyl, a potent synthetic opioid that is a leading driver of the opioid epidemic. To investigate the consequences of perinatal opioid exposure, we administered fentanyl to mouse dams in their drinking water throughout gestation and until litters were weaned at postnatal day (PD) 21. Fentanyl-exposed dams delivered smaller litters and had higher litter mortality rates compared with controls. Metrics of maternal care behavior were not affected by the treatment, nor were there differences in dams' weight or liquid consumption throughout gestation and 21 days postpartum. Twenty-four hours after weaning and drug cessation, perinatal fentanyl-exposed mice exhibited signs of spontaneous somatic withdrawal behavior and sex-specific weight fluctuations that normalized in adulthood. At adolescence (PD 35), they displayed elevated anxiety-like behaviors and decreased grooming, assayed in the elevated plus maze and sucrose splash tests. Finally, by adulthood (PD 55), they displayed impaired performance in a two-tone auditory discrimination task. Collectively, our findings suggest that perinatal fentanyl-exposed mice exhibit somatic withdrawal behavior and change into early adulthood reminiscent of humans born with NOWS.
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Affiliation(s)
- Jason B. Alipio
- Department of Anatomy & Neurobiology, Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Adam T. Brockett
- Department of Psychology, University of Maryland, College Park, MD, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | - Megan E. Fox
- Department of Anatomy & Neurobiology, Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Stephen S. Tennyson
- Department of Psychology, University of Maryland, College Park, MD, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | | | - Dina El-Metwally
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Nikolas A. Francis
- Department of Biology, University of Maryland, College Park, MD, USA
- Institute for Systems Research, A. James Clark School of Engineering, University of Maryland, College Park, MD, USA
| | - Patrick O. Kanold
- Department of Biology, University of Maryland, College Park, MD, USA
- Institute for Systems Research, A. James Clark School of Engineering, University of Maryland, College Park, MD, USA
| | - Mary Kay Lobo
- Department of Anatomy & Neurobiology, Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Matthew R. Roesch
- Department of Psychology, University of Maryland, College Park, MD, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | - Asaf Keller
- Department of Anatomy & Neurobiology, Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, USA
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Lambert KG, Byrnes EM. Challenges to the parental brain: Neuroethological and translational considerations. Front Neuroendocrinol 2019; 53:100747. [PMID: 31004617 DOI: 10.1016/j.yfrne.2019.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 03/15/2019] [Accepted: 04/16/2019] [Indexed: 02/05/2023]
Abstract
Extending from research documenting adaptive parental responses in nonthreatening contexts, the influences of various neuroethological and physiological challenges on effective parenting responses are considered in the current review. In natural habitats, rodent family units are exposed to predators, compromised resources, and other environmental stressors that disrupt HPA axis functions. With the additional physiological demands associated with caring for offspring, alterations in stress-related neuroendocrine responsiveness contribute to adaptive responses in many challenging contexts. Some environmental contexts, however, such as restricted nesting resources, result in disrupted maternal responses that have a negative impact on offspring wellbeing. Additionally, parental dysregulation associated with exposure to environmental chemicals or pharmacological substances, also compromise maternal responses with effects that often extend to future generations. Continued preclinical and clinical research elucidating parental responses to various stressors and physiological disruptors is necessary to provide valuable translational information identifying threats to effective parenting outcomes.
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Affiliation(s)
- Kelly G Lambert
- Department of Psychology, University of Richmond, VA 23173, United States.
| | - Elizabeth M Byrnes
- Cummings School of Veterinary Medicine, Tufts University, N. Grafton, MA 01536, United States
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5
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Harder HJ, Murphy AZ. Early life opioid exposure and potential long-term effects. Neurobiol Stress 2019; 10:100156. [PMID: 31338390 PMCID: PMC6629922 DOI: 10.1016/j.ynstr.2019.100156] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/13/2019] [Accepted: 03/08/2019] [Indexed: 11/09/2022] Open
Abstract
The long-term consequences of perinatal opioid exposure and subsequent development of neonatal opioid withdrawal syndrome is largely unknown and likely dependent on a multitude of factors, including co-morbid drug use, pre- and post-natal care, and individual factors including the maternal-infant relationship and home environment. This review summarizes the current literature from clinical and preclinical studies on perinatal opioid exposure, focusing on the consequences in the offspring. Although a large number of preclinical studies have been conducted examining the impact of prenatal opioid exposure, the models employed are not necessarily representative of clinical use patterns, making it challenging to translate these results to the impacted population. Use of more clinically-relevant models of perinatal opioid exposure are requisite for the development of improved pharmacological and behavioral treatment strategies to improve quality of life for this vulnerable population.
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Affiliation(s)
| | - Anne Z. Murphy
- Neuroscience Institute, Georgia State University, Atlanta, GA, 30308, USA
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Byrnes EM, Vassoler FM. Modeling prenatal opioid exposure in animals: Current findings and future directions. Front Neuroendocrinol 2018; 51:1-13. [PMID: 28965857 PMCID: PMC5649358 DOI: 10.1016/j.yfrne.2017.09.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 09/26/2017] [Accepted: 09/27/2017] [Indexed: 01/03/2023]
Abstract
The past decade has seen a drastic rise in the number of infants exposed to opioids in utero. It is unclear what lasting effect this exposure may have on these children. Animal models of prenatal opioid exposure may provide insight into potential areas of vulnerability. The present review summarizes the findings across animal models of prenatal opioid exposure, including exposure to morphine, methadone, buprenorphine, and oxycodone. Details regarding the drug, doses, and duration of treatment, as well as key findings, are summarized in tables with associated references. Finally, significant gaps in the current preclinical literature and future directions are discussed.
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Affiliation(s)
- Elizabeth M Byrnes
- Department of Biomedical Sciences, Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA 01536, United States.
| | - Fair M Vassoler
- Department of Biomedical Sciences, Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA 01536, United States
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Nakhjiri E, Saboory E, Roshan-Milani S, Rasmi Y, Sayyadi H. Prenatal Stress+Morphine and Postnatal Re-exposure to Stress Alter Pentylenetetrazol-Induced Epileptic Manifestations in Rats. NEUROPHYSIOLOGY+ 2017. [DOI: 10.1007/s11062-017-9610-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Nakhjiri E, Saboory E, Roshan-Milani S, Rasmi Y, Khalafkhani D. Effect of prenatal restraint stress and morphine co-administration on plasma vasopressin concentration and anxiety behaviors in adult rat offspring. Stress 2017; 20:205-211. [PMID: 28287019 DOI: 10.1080/10253890.2017.1306053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Stressful events and exposure to opiates during gestation have important effects on the later mental health of the offspring. Anxiety is among the most common mental disorders. The present study aimed to identify effects of prenatal restraint stress and morphine co-administration on plasma vasopressin concentration (PVC) and anxiety behaviors in rats. Pregnant rats were divided into four groups (n = 6, each): saline, morphine, stress + saline and stress + morphine treatment. The stress procedure consisted of restraint twice per day, two hours per session, for three consecutive days starting on day 15 of pregnancy. Rats in the saline and morphine groups received either 0.9% saline or morphine intraperitoneally on the same days. In the morphine/saline + stress groups, rats were exposed to restraint stress and received either morphine or saline intraperitoneally. All offspring were tested in an elevated plus maze (EPM) on postnatal day 90 (n = 6, each sex), and anxiety behaviors of each rat were recorded. Finally, blood samples were collected to determine PVC. Prenatal morphine exposure reduced anxiety-like behaviors. Co-administration of prenatal stress and morphine increased locomotor activity (LA) and PVC. PVC was significantly lower in female offspring of the morphine and morphine + stress groups compared with males in the same group, but the opposite was seen in the saline + stress group. These data emphasize the impact of prenatal stress and morphine on fetal neuroendocrine development, with long-term changes in anxiety-like behaviors and vasopressin secretion. These changes are sex specific, indicating differential impact of prenatal stress and morphine on fetal neuroendocrine system development. Lay Summary Pregnant women are sometimes exposed to stressful and painful conditions which may lead to poor outcomes for offspring. Opiates may provide pain and stress relief to these mothers. In this study, we used an experimental model of maternal exposure to stress and morphine in pregnant rats. The findings indicated that maternal stress increased anxiety in offspring while morphine decreased such effects, but had negative effects on the levels of a hormone controlling blood pressure, and activity of offspring. Hence morphine should not be used in pregnancy for pain and stress relief.
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Affiliation(s)
- Elnaz Nakhjiri
- a Studental Research Committee , Urmia University of Medical Sciences , Urmia , Iran
| | - Ehsan Saboory
- b Neurophysiology Research Center, Urmia University of Medical Sciences , Urmia , Iran
| | - Shiva Roshan-Milani
- c Department of Physiology, Faculty of Medicine , Urmia University of Medical Sciences , Urmia , Iran
| | - Yousef Rasmi
- d Cellular and Molecular Research Center, Urmia University of Medical Sciences , Urmia , Iran
| | - Davod Khalafkhani
- d Cellular and Molecular Research Center, Urmia University of Medical Sciences , Urmia , Iran
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Ahmadalipour A, Sadeghzadeh J, Vafaei AA, Bandegi AR, Mohammadkhani R, Rashidy-Pour A. Effects of environmental enrichment on behavioral deficits and alterations in hippocampal BDNF induced by prenatal exposure to morphine in juvenile rats. Neuroscience 2015; 305:372-83. [PMID: 26272536 DOI: 10.1016/j.neuroscience.2015.08.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 08/06/2015] [Accepted: 08/06/2015] [Indexed: 01/25/2023]
Abstract
Prenatal morphine exposure throughout pregnancy can induce a series of neurobehavioral and neurochemical disturbances by affecting central nervous system development. This study was designed to investigate the effects of an enriched environment on behavioral deficits and changes in hippocampal brain-derived neurotrophic factor (BDNF) levels induced by prenatal morphine in rats. On pregnancy days 11-18, female Wistar rats were randomly injected twice daily with saline or morphine. Offspring were weaned on postnatal day (PND) 21. They were subjected to a standard rearing environment or an enriched environment on PNDs 22-50. On PNDs 51-57, the behavioral responses including anxiety and depression-like behaviors, and passive avoidance memory as well as hippocampal BDNF levels were investigated. The light/dark (L/D) box and elevated plus maze (EPM) were used for the study of anxiety, forced swimming test (FST) was used to assess depression-like behavior and passive avoidance task was used to evaluate learning and memory. Prenatal morphine exposure caused a reduction in time spent in the EPM open arms and a reduction in time spent in the lit side of the L/D box. It also decreased step-through latency and increased time spent in the dark side of passive avoidance task. Prenatal morphine exposure also reduced immobility time and increased swimming time in FST. Postnatal rearing in an enriched environment counteracted with behavioral deficits in the EPM and passive avoidance task, but not in the L/D box. This suggests that exposure to an enriched environment during adolescence period alters anxiety profile in a task-specific manner. Prenatal morphine exposure reduced hippocampal BDNF levels, but enriched environment significantly increased BDNF levels in both saline- and morphine-exposed groups. Our results demonstrate that exposure to an enriched environment alleviates behavioral deficits induced by prenatal morphine exposure and up-regulates the decreased levels of BDNF. BDNF may contribute to the beneficial effects of an enriched environment on prenatal morphine-exposed to rats.
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Affiliation(s)
- A Ahmadalipour
- Laboratory of Learning and Memory, Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, 15131-38111 Semnan, Iran; Student's Research Committee, Semnan University of Medical Sciences, Semnan, Iran
| | - J Sadeghzadeh
- Laboratory of Learning and Memory, Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, 15131-38111 Semnan, Iran; Student's Research Committee, Semnan University of Medical Sciences, Semnan, Iran
| | - A A Vafaei
- Laboratory of Learning and Memory, Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, 15131-38111 Semnan, Iran
| | - A R Bandegi
- Laboratory of Endocrine Research, Research Center of Physiology and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - R Mohammadkhani
- Laboratory of Learning and Memory, Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, 15131-38111 Semnan, Iran
| | - A Rashidy-Pour
- Laboratory of Learning and Memory, Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, 15131-38111 Semnan, Iran.
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Tan JW, Duan TT, Zhou QX, Ding ZY, Jing L, Cao J, Wang LP, Mao RR, Xu L. Impaired contextual fear extinction and hippocampal synaptic plasticity in adult rats induced by prenatal morphine exposure. Addict Biol 2015; 20:652-62. [PMID: 24903743 DOI: 10.1111/adb.12158] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Prenatal opiate exposure causes a series of neurobehavioral disturbances by affecting brain development. However, the question of whether prenatal opiate exposure increases vulnerability to memory-related neuropsychiatric disorders in adult offspring remains largely unknown. Here, we found that rats prenatally exposed to morphine (PM) showed impaired acquisition but enhanced maintenance of contextual fear memory compared with control animals that were prenatally exposed to saline (PS). The impairment of acquisition was rescued by increasing the intensity of footshocks (1.2 mA rather than 0.8 mA). Meanwhile, we also found that PM rats exhibited impaired extinction of contextual fear, which is associated with enhanced maintenance of fear memory. The impaired extinction lasted for 1 week following extinction training. Furthermore, PM rats exhibited reduced anxiety-like behavior in the elevated plus-maze and light/dark box test without differences in locomotor activity. These alterations in PM rats were mirrored by abnormalities in synaptic plasticity in the Schaffer collateral-CA1 synapses of the hippocampus in vivo. PS rats showed blocked long-term potentiation and enabled long-term depression in CA1 synapses following contextual fear conditioning, while prenatal morphine exposure restricted synaptic plasticity in CA1 synapses. The smaller long-term potentiation in PM rats was not further blocked by contextual fear conditioning, and the long-term depression enabled by contextual fear conditioning was abolished. Taken together, our results provide the first evidence suggesting that prenatal morphine exposure may increase vulnerability to fear memory-related neuropsychiatric disorders in adulthood.
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Affiliation(s)
- Ji-Wei Tan
- Key Laboratory of Animal Models and Human Disease Mechanisms; KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease; Laboratory of Learning and Memory; Kunming Institute of Zoology; The Chinese Academy of Sciences; China
- Kunming College of Life Science; University of Chinese Academy of Sciences; China
| | - Ting-Ting Duan
- Key Laboratory of Animal Models and Human Disease Mechanisms; KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease; Laboratory of Learning and Memory; Kunming Institute of Zoology; The Chinese Academy of Sciences; China
- School of Life Sciences; University of Science and Technology of China; China
| | - Qi-Xin Zhou
- Key Laboratory of Animal Models and Human Disease Mechanisms; KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease; Laboratory of Learning and Memory; Kunming Institute of Zoology; The Chinese Academy of Sciences; China
| | - Ze-Yang Ding
- Key Laboratory of Animal Models and Human Disease Mechanisms; KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease; Laboratory of Learning and Memory; Kunming Institute of Zoology; The Chinese Academy of Sciences; China
- School of Life Sciences; Anhui University; China
| | - Liang Jing
- Key Laboratory of Animal Models and Human Disease Mechanisms; KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease; Laboratory of Learning and Memory; Kunming Institute of Zoology; The Chinese Academy of Sciences; China
- Kunming College of Life Science; University of Chinese Academy of Sciences; China
| | - Jun Cao
- Key Laboratory of Animal Models and Human Disease Mechanisms; KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease; Laboratory of Learning and Memory; Kunming Institute of Zoology; The Chinese Academy of Sciences; China
| | - Li-Ping Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms; KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease; Laboratory of Learning and Memory; Kunming Institute of Zoology; The Chinese Academy of Sciences; China
| | - Rong-Rong Mao
- Key Laboratory of Animal Models and Human Disease Mechanisms; KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease; Laboratory of Learning and Memory; Kunming Institute of Zoology; The Chinese Academy of Sciences; China
| | - Lin Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms; KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Disease; Laboratory of Learning and Memory; Kunming Institute of Zoology; The Chinese Academy of Sciences; China
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Effects of treadmill running exercise during the adolescent period of life on behavioral deficits in juvenile rats induced by prenatal morphine exposure. Physiol Behav 2015; 139:26-33. [DOI: 10.1016/j.physbeh.2014.10.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 09/30/2014] [Accepted: 10/22/2014] [Indexed: 12/27/2022]
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Haydari S, Miladi-Gorji H, Mokhtari A, Safari M. Effects of voluntary exercise on anxiety-like behavior and voluntary morphine consumption in rat pups borne from morphine-dependent mothers during pregnancy. Neurosci Lett 2014; 578:50-4. [DOI: 10.1016/j.neulet.2014.06.026] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 04/26/2014] [Accepted: 06/10/2014] [Indexed: 01/12/2023]
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Ebrahimi L, Saboory E, Roshan-Milani S, Hashemi P. Effect of prenatal forced-swim stress and morphine co-administration on pentylentetrazol-induced epileptic behaviors in infant and prepubertal rats. Dev Psychobiol 2014; 56:1179-86. [PMID: 24464467 DOI: 10.1002/dev.21198] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Accepted: 12/17/2013] [Indexed: 11/11/2022]
Abstract
Prenatal exposure to stress and morphine has complicated effects on epileptic seizure. Many reports have shown an interaction between morphine- and stress-induced behavioral changes in adult rats. In the present study, effect of prenatal forced-swim stress and morphine co-administration on pentylentetrazole (PTZ)-induced epileptic behaviors was investigated in rat offspring to address effect of the interaction between morphine and stress. Pregnant rats were divided to four groups of control-saline, control-morphine, stressed-saline and stressed-morphine. In the stressed group, the rats were placed in 25 °C water on 17-19 days of pregnancy. In the morphine/saline group, the rats received morphine/saline on the same days. In the morphine/saline-stressed group, they were exposed to stress and received morphine/saline simultaneously. On postnatal day 15 (P15), blood samples were collected to determine corticosterone (COS) level. On P15 and P25, PTZ was injected to the rest of pups to induce seizure. Then, epileptic behaviors of each rat were individually observed. Latency of tonic-colonic seizures decreased in control-morphine and stressed-saline groups while increasing in stressed-morphine rats compared to control-saline group on P15. Duration of tonic-colonic seizures significantly increased in control-morphine and stressed-saline rats compared to stressed-morphine and control-saline rats on P15, but not P25. COS levels increased in stressed-saline group but decreased in control-morphine group compared to control-saline rats. Body weight was significantly higher in morphine groups than saline treated rats. Prenatal exposure to forced-swim stress potentiated PTZ-induced seizure in the offspring rats. Co-administration of morphine attenuated effect of stress on body weight, COS levels, and epileptic behaviors.
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Affiliation(s)
- Loghman Ebrahimi
- Department of Physiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
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14
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Sithisarn T, Bada HS, Charnigo RJ, Legan SJ, Randall DC. Effects of perinatal oxycodone exposure on the cardiovascular response to acute stress in male rats at weaning and in young adulthood. Front Physiol 2013; 4:85. [PMID: 23630500 PMCID: PMC3633946 DOI: 10.3389/fphys.2013.00085] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 04/02/2013] [Indexed: 11/30/2022] Open
Abstract
UNLABELLED Oxycodone (OXY) is one of the most commonly abused opiates during pregnancy. Perinatal opiate exposure (POE) is associated with neurobehavioral and hormone changes. Little is known about the effects of perinatal OXY on the cardiovascular (CV) responses to stress. OBJECTIVES to determine the effects of POE on: (1) CV responses to acute stress and ability to discriminate using a classical conditioning paradigm; (2) changes in CV response to the paradigm and retention of the ability to discriminate from postnatal day (PD) 40 to young adulthood. METHODS Pregnant rats were given i.v. OXY or vehicle (CON) daily. OXY and CON males were fitted with BP telemetry units. Offspring were classically conditioned by following a pulsed tone (CS+) with tail shock. A steady tone (CS-) was not followed by shock. BP and HR were recorded during resting periods and conditioning. Changes in BP, HR from composite analysis were compared. The paradigm was repeated on PD 75. RESULTS At PD 40, OXY rats had a lower baseline mean BP (OXY: 114.8 ± 1.0 vs. CON: 118.3 ± 1.0 mm Hg; mean ± SEM) but larger amplitude of the conditional BP increase during the stress response (OXY: +3.9 ± 0.4 vs. CON: +1.7 ± 0.4 mm Hg). Both OXY and CON rats were able to discriminate between CS+ and CS-. At PD 75, the effects of OXY on the increased amplitude of the conditional BP had dissipated (CON: +3.4 ± 2.3 vs. OXY: +4.5 ± 1.4 mm Hg). BP responses to the stress and non-stress stimuli did not differ in the OXY group, suggesting that OXY may have decreased the ability of the offspring to discriminate (OXY: CS+: 147.1 ± 1.6, CS-: 145.9 ± 1.6 mm Hg vs. CON: CS+: 155.4 ± 2.7, CS-: 147.8 ± 2.7 mm Hg). CONCLUSION POE is associated with subtle alterations in stress CV responses in weanling rats which dissipate when the conditioning is repeated at an early adult age. Although POE effect on the ability to discriminate at weanling age could not be detected, POE may impair retention of this ability in adulthood.
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Affiliation(s)
- Thitinart Sithisarn
- Department of Pediatrics, College of Medicine, University of KentuckyLexington, KY, USA
| | - Henrietta S. Bada
- Department of Pediatrics, College of Medicine, University of KentuckyLexington, KY, USA
| | - Richard J. Charnigo
- Department of Biostatistics, College of Public Health and Department of Statistics, College of Arts and Sciences, University of KentuckyLexington, KY, USA
| | - Sandra J. Legan
- Department of Physiology, College of Medicine, University of KentuckyLexington, KY, USA
| | - David C. Randall
- Department of Physiology, College of Medicine, University of KentuckyLexington, KY, USA
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Hambleton MT, Reynolds EW, Sithisarn T, Traxel SJ, Patwardhan AR, Crawford TN, Mendiondo MS, Bada HS. Autonomic nervous system function following prenatal opiate exposure. Front Pediatr 2013; 1:27. [PMID: 24400273 PMCID: PMC3864192 DOI: 10.3389/fped.2013.00027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 09/27/2013] [Indexed: 11/13/2022] Open
Abstract
In utero exposure to opiates may affect autonomic functioning of the fetus and newborn. We investigated heart rate variability (HRV) as a measure of autonomic stability in prenatal opiate-exposed neonates (n = 14) and in control term infants (n = 10). Electrocardiographic data during both non-nutritive and nutritive sucking were evaluated for RR intervals, heart rate (HR), standard deviation of the consecutive RR intervals (SDRR), standard deviation of the differences of consecutive RR intervals (SDDRR), and the power spectral densities in low and high frequency bands. In controls, mean HR increased significantly, 143-161 per min (p = 0.002), with a trend toward a decrease in RR intervals from non-nutritive to nutritive sucking; these measures did not change significantly among exposed infants. Compared to controls, exposed infants demonstrated significantly greater HRV or greater mean SDRR and SDDRR during non-nutritive period (p < 0.01), greater mean SDDRR during nutritive sucking (p = 0.02), and higher powers in the low and high frequency bands during nutritive feedings. Our findings suggest that prenatal opiate exposure may be associated with changes in autonomic nervous system (ANS) functioning involving both sympathetic and parasympathetic branches. Future studies are needed to examine the effects of prenatal opiate exposure on ANS function.
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Affiliation(s)
| | - Eric W Reynolds
- Department of Pediatrics, University of Kentucky , Lexington, KY , USA
| | | | - Stuart J Traxel
- Department of Biomedical Engineering, University of Kentucky , Lexington, KY , USA
| | - Abhijit R Patwardhan
- Department of Biomedical Engineering, University of Kentucky , Lexington, KY , USA
| | - Timothy N Crawford
- Department of Biostatistics, College of Public Health, University of Kentucky , Lexington, KY , USA
| | - Marta S Mendiondo
- Department of Biostatistics, College of Public Health, University of Kentucky , Lexington, KY , USA
| | - Henrietta S Bada
- Department of Pediatrics, University of Kentucky , Lexington, KY , USA
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Siraskar B, Völkl J, Ahmed MSE, Hierlmeier M, Gu S, Schmid E, Leibrock C, Föller M, Lang UE, Lang F. Enhanced catecholamine release in mice expressing PKB/SGK-resistant GSK3. Pflugers Arch 2011; 462:811-9. [DOI: 10.1007/s00424-011-1006-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 07/26/2011] [Accepted: 07/28/2011] [Indexed: 12/13/2022]
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Changes in adaptability following perinatal morphine exposure in juvenile and adult rats. Eur J Pharmacol 2010; 654:166-72. [PMID: 21147096 DOI: 10.1016/j.ejphar.2010.11.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Revised: 11/16/2010] [Accepted: 11/23/2010] [Indexed: 11/22/2022]
Abstract
The problem of drug abuse among pregnant women causes a major concern. The aim of the present study was to examine the adaptive consequences of long term maternal morphine exposure in offspring at different postnatal ages, and to see the possibility of compensation, as well. Pregnant rats were treated daily with morphine from the day of mating (on the first two days 5mg/kgs.c. than 10mg/kg) until weaning. Male offspring of dams treated with physiological saline served as control. Behavior in the elevated plus maze (EPM; anxiety) and forced swimming test (FST; depression) as well as adrenocorticotropin and corticosterone hormone levels were measured at postpartum days 23-25 and at adult age. There was only a tendency of spending less time in the open arms of the EPM in morphine treated rats at both ages, thus, the supposed anxiogenic impact of perinatal exposure with morphine needs more focused examination. In response to 5min FST morphine exposed animals spent considerable longer time with floating and shorter time with climbing at both ages which is an expressing sign of depression-like behavior. Perinatal morphine exposure induced a hypoactivity of the stress axis (adrenocorticotropin and corticosterone elevations) to strong stimulus (FST). Our results show that perinatal morphine exposure induces long term depression-like changes. At the same time the reactivity to the stress is failed. These findings on rodents presume that the progenies of morphine users could have lifelong problems in adaptive capability and might be prone to develop psychiatric disorders.
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Sex-specific effects of early neonatal progesterone treatment on dopamine and serotonin metabolism in rat striatum and frontal cortex. Life Sci 2010; 87:738-42. [DOI: 10.1016/j.lfs.2010.10.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Revised: 10/04/2010] [Accepted: 10/15/2010] [Indexed: 11/22/2022]
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Villarreal DM, Derrick B, Vathy I. Prenatal morphine exposure attenuates the maintenance of late LTP in lateral perforant path projections to the dentate gyrus and the CA3 region in vivo. J Neurophysiol 2008; 99:1235-42. [PMID: 18199817 DOI: 10.1152/jn.00981.2007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Previously we reported that prenatal exposure to morphine twice daily during gestation decreases proenkephalin levels in adult progeny within the brain, including the dentate gyrus, and alters mu and delta opioid receptors in the hippocampal CA3 region. The lateral aspect of the perforant path contains and releases enkephalin-derived opioid peptides, and induction of long-term potentiation (LTP) in lateral perforant path projections to both the dentate gyrus and the hippocampal CA3 region is blocked by antagonists of opioid receptors. Thus LTP induction at these synapses involves opioid receptor activation mediated by the release of proenkephalin-derived opioid peptides with lateral perforant path activation. Here we show in adult behaving animals, neither LTP induction nor the early phase of LTP (E-LTP) maintenance is altered by prenatal morphine exposure in the lateral perforant path projections to the dentate gyrus and the CA3 region. However, maintenance and longevity of late LTP (L-LTP), as reflected in the magnitude of LTP over days, was attenuated in animals prenatally exposed to morphine. In contrast, in medial perforant path projections to the dentate gyrus and CA3 region, both LTP induction and the maintenance of E- and L-LTP were unaffected by prenatal morphine treatment. Thus a brief prenatal exposure to the opiate morphine produces sustained, and possibly permanent, alterations in L-LTP in the opioidergic lateral perforant path projection. This suggests that prenatal morphine exposure disrupts LTP via disruption of opioid mechanisms involved in LTP maintenance or via disruption of opioid receptor activation during LTP induction, which can subsequently alter LTP maintenance.
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Affiliation(s)
- D M Villarreal
- Cajal Neuroscience Research Center, Department of Biology, University of Texas at San Antonio, TX, USA
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Abstract
This paper is the 28th consecutive installment of the annual review of research concerning the endogenous opioid system, now spanning over a quarter-century of research. It summarizes papers published during 2005 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (Section 2), and the roles of these opioid peptides and receptors in pain and analgesia (Section 3); stress and social status (Section 4); tolerance and dependence (Section 5); learning and memory (Section 6); eating and drinking (Section 7); alcohol and drugs of abuse (Section 8); sexual activity and hormones, pregnancy, development and endocrinology (Section 9); mental illness and mood (Section 10); seizures and neurologic disorders (Section 11); electrical-related activity, neurophysiology and transmitter release (Section 12); general activity and locomotion (Section 13); gastrointestinal, renal and hepatic functions (Section 14); cardiovascular responses (Section 15); respiration and thermoregulation (Section 16); immunological responses (Section 17).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, 65-30 Kissena Blvd., Flushing, NY 11367, USA.
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