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Ruszczak A, Poznański P, Leśniak A, Łazarczyk M, Skiba D, Nawrocka A, Gaweł K, Paszkiewicz J, Mickael ME, Sacharczuk M. Susceptibility to Pentylenetetrazole-Induced Seizures in Mice with Distinct Activity of the Endogenous Opioid System. Int J Mol Sci 2024; 25:6978. [PMID: 39000086 PMCID: PMC11241619 DOI: 10.3390/ijms25136978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 06/19/2024] [Accepted: 06/22/2024] [Indexed: 07/16/2024] Open
Abstract
Currently, pharmacotherapy provides successful seizure control in around 70% of patients with epilepsy; however, around 30% of cases are still resistant to available treatment. Therefore, effective anti-epileptic therapy still remains a challenge. In our study, we utilized two mouse lines selected for low (LA) and high (HA) endogenous opioid system activity to investigate the relationship between down- or upregulation of the opioid system and susceptibility to seizures. Pentylenetetrazole (PTZ) is a compound commonly used for kindling of generalized tonic-clonic convulsions in animal models. Our experiments revealed that in the LA mice, PTZ produced seizures of greater intensity and shorter latency than in HA mice. This observation suggests that proper opioid system tone is crucial for preventing the onset of generalized tonic-clonic seizures. Moreover, a combination of an opioid receptor antagonist-naloxone-and a GABA receptor agonist-diazepam (DZP)-facilitates a significant DZP-sparing effect. This is particularly important for the pharmacotherapy of neurological patients, since benzodiazepines display high addiction risk. In conclusion, our study shows a meaningful, protective role of the endogenous opioid system in the prevention of epileptic seizures and that disturbances in that balance may facilitate seizure occurrence.
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Affiliation(s)
- Anna Ruszczak
- Department of Small Animal Diseases with Clinic, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Nowoursynowska 166, 02-787 Warsaw, Poland
| | - Piotr Poznański
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
- Laboratory of Host-Microbiota Interactions, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Pasteura 3, 02-093 Warsaw, Poland
| | - Anna Leśniak
- Department of Pharmacotherapy and Pharmaceutical Care, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-697 Warsaw, Poland
| | - Marzena Łazarczyk
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
| | - Dominik Skiba
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
| | - Agata Nawrocka
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
| | - Kinga Gaweł
- Department of Experimental and Clinical Pharmacology, Medical University of Lublin, Jaczewskiego 8b, 20-090 Lublin, Poland
| | - Justyna Paszkiewicz
- Department of Health, John Paul II University of Applied Sciences in Biala Podlaska, Sidorska 95/97, 21-500 Biała Podlaska, Poland
| | - Michel-Edwar Mickael
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
| | - Mariusz Sacharczuk
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
- Department of Pharmacotherapy and Pharmaceutical Care, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-697 Warsaw, Poland
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Skiba D, Jaskuła K, Nawrocka A, Poznański P, Łazarczyk M, Szymański Ł, Żera T, Sacharczuk M, Cudnoch-Jędrzejewska A, Gaciong Z. The Role of Opioid Receptor Antagonists in Regulation of Blood Pressure and T-Cell Activation in Mice Selected for High Analgesia Induced by Swim Stress. Int J Mol Sci 2024; 25:2618. [PMID: 38473865 DOI: 10.3390/ijms25052618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/09/2024] [Accepted: 02/14/2024] [Indexed: 03/14/2024] Open
Abstract
Opioid peptides and their G protein-coupled receptors are important regulators within the cardiovascular system, implicated in the modulation of both heart and vascular functions. It is known that naloxone-an opioid antagonist-may exert a hypertensive effect. Recent experimental and clinical evidence supports the important role of inflammatory mechanisms in hypertension. Since opioids may play a role in the regulation of both blood pressure and immune response, we studied these two processes in our model. We aimed to evaluate the effect of selective and non-selective opioid receptor antagonists on blood pressure and T-cell activation in a mouse model of high swim stress-induced analgesia. Blood pressure was measured before and during the infusion of opioid receptor antagonists using a non-invasive tail-cuff measurement system. To assess the activation of T-cells, flow cytometry was used. We discovered that the non-selective antagonism of the opioid system by naloxone caused a significant elevation of blood pressure. The selective antagonism of μ and κ but not δ opioid receptors significantly increased systolic blood pressure. Subsequently, a brief characterization of T-cell subsets was performed. We found that the blockade of μ and δ receptors is associated with the increased expression of CD69 on CD4 T-cells. Moreover, we observed an increase in the central memory CD4 and central memory CD8 T-cell populations after the δ opioid receptor blockade. The antagonism of the μ opioid receptor increased the CD8 effector and central memory T-cell populations.
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Affiliation(s)
- Dominik Skiba
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Kinga Jaskuła
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Agata Nawrocka
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Piotr Poznański
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Marzena Łazarczyk
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Łukasz Szymański
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Tymoteusz Żera
- Department of Experimental and Clinical Physiology, Center for Preclinical Research, Medical University of Warsaw, Banacha 1B Street, 02-097 Warsaw, Poland
| | - Mariusz Sacharczuk
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postepu 36A Street, Jastrzebiec, 05-552 Magdalenka, Poland
- Department of Pharmacodynamics, Medical University of Warsaw, Zwirki i Wigury 81 Street, 02-091 Warsaw, Poland
| | - Agnieszka Cudnoch-Jędrzejewska
- Department of Experimental and Clinical Physiology, Center for Preclinical Research, Medical University of Warsaw, Banacha 1B Street, 02-097 Warsaw, Poland
| | - Zbigniew Gaciong
- Department and Clinic of Internal Diseases, Hypertension and Angiology, Medical University of Warsaw, Banacha 1A Street, 02-097 Warsaw, Poland
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Mechanisms Underlining Inflammatory Pain Sensitivity in Mice Selected for High and Low Stress-Induced Analgesia-The Role of Endocannabinoids and Microglia. Int J Mol Sci 2022; 23:ijms231911686. [PMID: 36232988 PMCID: PMC9570076 DOI: 10.3390/ijms231911686] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/24/2022] [Accepted: 09/29/2022] [Indexed: 11/05/2022] Open
Abstract
In this work we strived to determine whether endocannabinoid system activity could account for the differences in acute inflammatory pain sensitivity in mouse lines selected for high (HA) and low (LA) swim-stress-induced analgesia (SSIA). Mice received intraplantar injections of 5% formalin and the intensity of nocifensive behaviours was scored. To assess the contribution of the endocannabinoid system, mice were intraperitoneally (i.p.) injected with rimonabant (0.3–3 mg/kg) prior to formalin. Minocycline (45 and 100 mg/kg, i.p.) was administered to investigate microglial activation. The possible involvement of the endogenous opioid system was investigated with naloxone (1 mg/kg, i.p.). Cannabinoid receptor types 1 and 2 (Cnr1, Cnr2) and opioid receptor subtype (Oprm1, Oprd1, Oprk1) mRNA levels were quantified by qPCR in the structures of the central nociceptive circuit. Levels of anandamide (AEA) and 2-arachidonoylglycerol (2-AG) were measured by liquid chromatography coupled with the mass spectrometry method (LC-MS/MS). In the interphase, higher pain thresholds in the HA mice correlated with increased spinal anandamide and 2-AG release and higher Cnr1 transcription. Downregulation of Oprd1 and Oprm1 mRNA was noted in HA and LA mice, respectively, however no differences in naloxone sensitivity were observed in either line. As opposed to the LA mice, inflammatory pain sensitivity in the HA mice in the tonic phase was attributed to enhanced microglial activation, as evidenced by enhanced Aif1 and Il-1β mRNA levels. To conclude, Cnr1 inhibitory signaling is one mechanism responsible for decreased pain sensitivity in HA mice in the interphase, while increased microglial activation corresponds to decreased pain thresholds in the tonic inflammatory phase.
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The Influence of Cross-Fostering on Alcohol Consumption and Depressive-Like Behaviors in HA and LA Mice: The Role of the Endogenous Opioid System. Brain Sci 2021; 11:brainsci11050622. [PMID: 34067974 PMCID: PMC8152237 DOI: 10.3390/brainsci11050622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/10/2021] [Accepted: 05/11/2021] [Indexed: 12/23/2022] Open
Abstract
The development of alcohol dependence and depression is determined by various genetic and environmental factors. In the presented study, we used high analgesia (HA) and low analgesia (LA) mouse lines, characterized by different endogenous opioid system activity and divergent blood–brain barrier permeability, to determine the influence of cross-fostering of these lines raised by surrogate mothers on ethanol consumption and development of depressive-like behaviors. We also investigated ethanol drinking by biological parents or surrogate mothers. Furthermore, we investigated whether these parental changes would alter the effect of naloxone on ethanol intake and depressive-like behaviors in offspring. Our results reveal that cross-fostering of HA and LA raised by surrogate mothers has a greater impact on depressive-like behaviors than ethanol consumption. Ethanol intake by biological parents substantially affected depressive-like behaviors and ethanol consumption in offspring. Moreover, ethanol intake by biological parents or an adoptive mother modified the effect of naloxone on ethanol consumption and preference and depressive-like behaviors in the HA offspring only. Together, these results indicate that cross-fostering differentially affects the effect of naloxone on alcohol consumption and the development of depression.
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Hypertensive Effect of Downregulation of the Opioid System in Mouse Model of Different Activity of the Endogenous Opioid System. Int J Mol Sci 2021; 22:ijms22084179. [PMID: 33920718 PMCID: PMC8073468 DOI: 10.3390/ijms22084179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 11/19/2022] Open
Abstract
The opioid system is well-known for its role in modulating nociception and addiction development. However, there are premises that the endogenous opioid system may also affect blood pressure. The main goal of the present study was to determine the impact of different endogenous opioid system activity and its pharmacological blockade on blood pressure. Moreover, we examined the vascular function in hyper- and hypoactive states of the opioid system and its pharmacological modification. In our study, we used two mouse lines which are divergently bred for high (HA) and low (LA) swim stress-induced analgesia. The obtained results indicated that individuals with low endogenous opioid system activity have higher basal blood pressure compared to those with a hyperactive opioid system. Additionally, naloxone administration only resulted in the elevation of blood pressure in HA mice. We also showed that the hypoactive opioid system contributes to impaired vascular relaxation independent of endothelium, which corresponded with decreased guanylyl cyclase levels in the aorta. Together, these data suggest that higher basal blood pressure in LA mice is a result of disturbed mechanisms in vascular relaxation in smooth muscle cells. We believe that a novel mechanism which involves endogenous opioid system activity in the regulation of blood pressure will be a promising target for further studies in hypertension development.
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Lesniak A, Poznański P, Religa P, Nawrocka A, Bujalska-Zadrozny M, Sacharczuk M. Loss of Brain-Derived Neurotrophic Factor (BDNF) Resulting From Congenital- Or Mild Traumatic Brain Injury-Induced Blood-Brain Barrier Disruption Correlates With Depressive-Like Behaviour. Neuroscience 2021; 458:1-10. [PMID: 33465406 DOI: 10.1016/j.neuroscience.2021.01.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 12/08/2020] [Accepted: 01/04/2021] [Indexed: 12/19/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) plays an important role in processes associated with neuroplasticity and neuroprotection. Evidence suggests that decreased BDNF levels in the central nervous system (CNS) represent a mechanism underlying the development of mood disorders. We hypothesize that both congenital and traumatic brain injury (mTBI)-induced blood-brain barrier (BBB) breakdown are responsible for brain BDNF depletion that contributes to the development of depressive-like symptoms. We employed a mouse model of innate differences in BBB integrity with high (HA) and low (LA) permeability. Depressive-like behaviours were determined under chronic mild stress (CMS) conditions or following mTBI using the tail suspension test (TST). Microvascular leakage of the BBB was evaluated using the Evans Blue Dye (EBD) extravasation method. BDNF concentrations in the brain and plasma were measured using the ELISA. Control HA mice with congenitally high BBB permeability showed exacerbated depressive-like behaviours compared with LA mice. In LA mice, with normal BBB function, mTBI, but not CMS, facilitated depressive-like behaviours, which correlated with enhanced BDNF efflux from the brain. In addition, mTBI triggered upregulation of the Bdnf gene in LA mice to compensate for BDNF loss. No alterations in BDNF levels were observed in mTBI and CMS-exposed HA mice. Moreover, CMS did not induce BBB damage or affect depressive-like behaviours in HA mice despite downregulating Bdnf gene expression. To conclude, BDNF efflux through the mTBI-disrupted BBB is strongly linked to the development of depressive-like behaviours, while the depressive phenotype in mice with congenital BBB dysfunction is independent of BDNF leakage.
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Affiliation(s)
- Anna Lesniak
- Faculty of Pharmacy with the Laboratory Medicine Division, Department of Pharmacodynamics, Medical University of Warsaw, Centre for Preclinical Research and Technology, Warsaw, Poland
| | - Piotr Poznański
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Jastrzebiec, Poland
| | - Piotr Religa
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Jastrzebiec, Poland
| | - Agata Nawrocka
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Jastrzebiec, Poland
| | - Magdalena Bujalska-Zadrozny
- Faculty of Pharmacy with the Laboratory Medicine Division, Department of Pharmacodynamics, Medical University of Warsaw, Centre for Preclinical Research and Technology, Warsaw, Poland
| | - Mariusz Sacharczuk
- Faculty of Pharmacy with the Laboratory Medicine Division, Department of Pharmacodynamics, Medical University of Warsaw, Centre for Preclinical Research and Technology, Warsaw, Poland; Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Jastrzebiec, Poland.
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Lesniak A, Chmielewska D, Poznanski P, Bujalska-Zadrozny M, Strzemecka J, Sacharczuk M. Divergent Response to Cannabinoid Receptor Stimulation in High and Low Stress-Induced Analgesia Mouse Lines Is Associated with Differential G-Protein Activation. Neuroscience 2019; 404:246-258. [DOI: 10.1016/j.neuroscience.2019.02.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 02/07/2019] [Accepted: 02/11/2019] [Indexed: 12/21/2022]
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Poznański P, Lesniak A, Bujalska-Zadrozny M, Strzemecka J, Sacharczuk M. Bidirectional selection for high and low stress-induced analgesia affects G-protein activity. Neuropharmacology 2018; 144:37-42. [PMID: 30326238 DOI: 10.1016/j.neuropharm.2018.10.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 09/03/2018] [Accepted: 10/12/2018] [Indexed: 11/19/2022]
Abstract
Mice selected for high (HA) and low (LA) swim stress-induced analgesia (SSIA) are a unique model for studying the genetic background of this phenomenon. HA and LA miceshow substantial differences in the magnitude of the antinociceptive response to stress and when treated with exogenous opioids. However, the direct cause underplaying this distinctive feature has not yet been identified. The current study was designed to investigate the possibility that disturbances in G-protein signaling could explain the divergent response to opioid agonists. Supraspinal and spinal opioid sensitivity was assessed in vivo with intraperitoneal morphine and subsequent thermal stimulus exposure. The level of opioid receptor-mediated G-protein activation was investigated by means of DAMGO and morphine-stimulated [35S]GTPγS assay in the brain and spinal cord homogenates from HA and LA mice. Morphine (3-249 μmol/kg, i.p) was over 6 - and 3 - times more potent in HA than LA mice in the hot plate and tail-flick assays, respectively. Additionally, HA mice showed elevated β - endorphin levels in the brain. Enhanced efficacy of agonist-stimulated [35S]GTPγS binding was detected in opioid receptor-rich limbic regions of HA mice like the hypothalamus and hippocampus. Increased G-protein activity also emerged in the thalamus, periaqueductal gray matter and prefrontal cortex. In conclusion, the magnitude of the antinociceptive response to opioids in HA and LA mice is correlated with alterations in G-protein activation in brain regions responsible for integration and descending modulation of nociceptive information as well as at sites governing the emotional response to stressful stimuli.
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Affiliation(s)
- Piotr Poznański
- Department of Genomics, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Poland
| | - Anna Lesniak
- Faculty of Pharmacy with the Laboratory Medicine Division, Department of Pharmacodynamics, Medical University of Warsaw, Centre for Preclinical Research and Technology, Warsaw, Poland
| | - Magdalena Bujalska-Zadrozny
- Faculty of Pharmacy with the Laboratory Medicine Division, Department of Pharmacodynamics, Medical University of Warsaw, Centre for Preclinical Research and Technology, Warsaw, Poland
| | - Joanna Strzemecka
- Institute of Health Sciences, Pope John Paul II State School of Higher Education, Biala Podlaska, Poland
| | - Mariusz Sacharczuk
- Faculty of Pharmacy with the Laboratory Medicine Division, Department of Pharmacodynamics, Medical University of Warsaw, Centre for Preclinical Research and Technology, Warsaw, Poland; Department of Genomics, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Poland; Department of Internal Medicine, Hypertension and Vascular Diseases, Medical University of Warsaw, Warsaw, Poland.
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Poznanski P, Lesniak A, Korostynski M, Szklarczyk K, Lazarczyk M, Religa P, Bujalska-Zadrozny M, Sadowski B, Sacharczuk M. Delta-opioid receptor antagonism leads to excessive ethanol consumption in mice with enhanced activity of the endogenous opioid system. Neuropharmacology 2017; 118:90-101. [PMID: 28322978 DOI: 10.1016/j.neuropharm.2017.03.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 03/12/2017] [Accepted: 03/13/2017] [Indexed: 11/19/2022]
Abstract
The opioid system modulates the central reinforcing effects of ethanol and participates in the etiology of addiction. However, the pharmacotherapy of ethanol dependence targeted on the opioid system is little effective and varies due to individual patients' sensitivity. In the present study, we used two mouse lines with high (HA) and low (LA) activity of the endogenous opioid system to analyze the effect of opioid receptor blockade on ethanol drinking behavior. We found that LA and HA lines characterized by divergent magnitudes of swim stress-induced analgesia also differ in ethanol intake and preference. Downregulation of the opioid system in LA mice was associated with increased ethanol consumption. Treatment with a non-selective opioid receptor antagonist (naloxone) had no effect on ethanol intake in this line. Surprisingly, in HA mice, the blockage of opioid receptors led to excessive ethanol consumption. Moreover, naloxone selectively induced high levels of anxiety- and depressive-like behaviors in HA mice which was attenuated by ethanol. With the use of specific opioid receptor antagonists we showed that the naloxone-induced increase in ethanol drinking in HA mice is mediated mainly by δ and to a lower extent by μ opioid receptors. The effect of δ-opioid receptor antagonism was abolished in HA mice carrying a C320T transition in the δ-opioid receptor gene (EU446125.1), which impairs this receptor's function. Our results indicate that high activity of the opioid system plays a protective role against ethanol dependence. Therefore, its blockage with opioid receptor antagonists may lead to a profound increase in ethanol consumption.
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Affiliation(s)
- Piotr Poznanski
- Laboratory of Neurogenomics and Department of Animal Behaviour, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Postepu 36A Str., 05-552 Magdalenka, Poland
| | - Anna Lesniak
- Department of Pharmacodynamics, Centre for Preclinical Research and Technology, Medical University of Warsaw, Warsaw, Poland
| | - Michal Korostynski
- Department of Molecular Neuropharmacology, Institute of Pharmacology, 12 Smetna Str., 31-343 Krakow, Poland
| | - Klaudia Szklarczyk
- Department of Molecular Neuropharmacology, Institute of Pharmacology, 12 Smetna Str., 31-343 Krakow, Poland
| | - Marzena Lazarczyk
- Department of Internal Medicine, Hypertension and Vascular Diseases, Medical University of Warsaw, Warsaw, Poland
| | - Piotr Religa
- Department of Medicine, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Magdalena Bujalska-Zadrozny
- Department of Pharmacodynamics, Centre for Preclinical Research and Technology, Medical University of Warsaw, Warsaw, Poland
| | - Bogdan Sadowski
- Laboratory of Neurogenomics and Department of Animal Behaviour, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Postepu 36A Str., 05-552 Magdalenka, Poland
| | - Mariusz Sacharczuk
- Laboratory of Neurogenomics and Department of Animal Behaviour, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Postepu 36A Str., 05-552 Magdalenka, Poland; Department of Pharmacodynamics, Centre for Preclinical Research and Technology, Medical University of Warsaw, Warsaw, Poland; Department of Internal Medicine, Hypertension and Vascular Diseases, Medical University of Warsaw, Warsaw, Poland.
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Lesniak A, Leszczynski P, Bujalska-Zadrozny M, Pick CG, Sacharczuk M. Naloxone exacerbates memory impairments and depressive-like behavior after mild traumatic brain injury (mTBI) in mice with upregulated opioid system activity. Behav Brain Res 2017; 326:209-216. [PMID: 28284950 DOI: 10.1016/j.bbr.2017.03.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/02/2017] [Accepted: 03/07/2017] [Indexed: 12/13/2022]
Abstract
The neuroprotective role of the endogenous opioid system in the pathophysiological sequelae of brain injury remains largely ambiguous. Noteworthy, almost no data is available on how its genetically determined activity influences the outcome of mild traumatic brain injury. Thus, the aim of our study was to examine the effect of opioid receptor blockage on cognitive impairments produced by mild traumatic brain injury in mice selectively bred for high (HA) and low (LA) swim-stress induced analgesia that show innate divergence in opioid system activity. Mild traumatic brain injury was induced with a weight-drop device on anaesthetized mice. Naloxone (5mg/kg) was intraperitoneally delivered twice a day for 7days to non-selectively block opioid receptors. Spatial memory performance and manifestations of depressive-like behavior were assessed using the Morris Water Maze and tail suspension tests, respectively. Mild traumatic brain injury resulted in a significant deterioration of spatial memory performance and severity of depressive-like behavior in the LA mouse line as opposed to HA mice. Opioid receptor blockage with naloxone unmasked cognitive deficits in HA mice but was without effect in the LA line. The results suggest a protective role of genetically predetermined enhanced opioid system activity in suppression of mild brain trauma-induced cognitive impairments. Mice selected for high and low swim stress-induced analgesia might therefore be a useful model to study the involvement of the opioid system in the pathophysiology and neurological outcome of traumatic brain injury.
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Affiliation(s)
- Anna Lesniak
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical University of Warsaw, Centre for Preclinical Research and Technology (CePT), Banacha 1B, 02-097 Warsaw, Poland
| | - Pawel Leszczynski
- Department of Genomics, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Postepu 36A, 05-552 Magdalenka, Poland
| | - Magdalena Bujalska-Zadrozny
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical University of Warsaw, Centre for Preclinical Research and Technology (CePT), Banacha 1B, 02-097 Warsaw, Poland
| | - Chaim G Pick
- Department of Anatomy, and Anthropology, Sackler Faculty of Medicine, and Sagol School of Neuroscience, Tel Aviv University, Ramat-Aviv, 69978 Tel Aviv, Israel
| | - Mariusz Sacharczuk
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical University of Warsaw, Centre for Preclinical Research and Technology (CePT), Banacha 1B, 02-097 Warsaw, Poland; Department of Internal Medicine, Hypertension and Vascular Diseases, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland; Department of Genomics, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Postepu 36A, 05-552 Magdalenka, Poland.
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Juszczak GR, Miller M. Detour Behavior of Mice Trained with Transparent, Semitransparent and Opaque Barriers. PLoS One 2016; 11:e0162018. [PMID: 27588753 PMCID: PMC5010287 DOI: 10.1371/journal.pone.0162018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 08/16/2016] [Indexed: 11/18/2022] Open
Abstract
Detour tasks are commonly used to study problem solving skills and inhibitory control in canids and primates. However, there is no comparable detour test designed for rodents despite its significance for studying the development of executive skills. Furthermore, mice offer research opportunities that are not currently possible to achieve when primates are used. Therefore, the aim of the study was to translate the classic detour task to mice and to compare obtained data with key findings obtained previously in other mammals. The experiment was performed with V-shaped barriers and was based on the water escape paradigm. The study showed that an apparently simple task requiring mice to move around a small barrier constituted in fact a challenge that was strongly affected by the visibility of the target. The most difficult task involved a completely transparent barrier, which forced the mice to resolve a conflict between vision and tactile perception. The performance depended both on the inhibitory skills and on previous experiences. Additionally, all mice displayed a preference for one side of the barrier and most of them relied on the egocentric strategy. Obtained results show for the first time that the behavior of mice subjected to the detour task is comparable to the behavior of other mammals tested previously with free-standing barriers. This detailed characterization of the detour behavior of mice constitutes the first step toward the substitution of rodents for primates in laboratory experiments employing the detour task.
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Affiliation(s)
- Grzegorz R. Juszczak
- Department of Animal Behavior, Institute of Genetics and Animal Breeding, Jastrzebiec, Poland
- * E-mail:
| | - Michal Miller
- Department of Animal Behavior, Institute of Genetics and Animal Breeding, Jastrzebiec, Poland
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Wasilewski A, Lesniak A, Bujalska-Zadrozny M, Sadowski B, Fichna J, Sacharczuk M. The effect of opioid agonists and antagonists on gastrointestinal motility in mice selected for high and low swim stress-induced analgesia. Neurogastroenterol Motil 2016; 28:175-85. [PMID: 26510904 DOI: 10.1111/nmo.12704] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 09/16/2015] [Indexed: 02/08/2023]
Abstract
BACKGROUND The opioid system in the gastrointestinal (GI) tract plays an important physiological role, but is also responsible for the side effect of opioid drugs, including troublesome constipation in chronic pain treatment. The aim of this study was to characterize and validate a new mouse model to study the effects of opioid agonists and antagonists in the GI tract. METHODS Six-week-old male Swiss-Webster mice, divergently bred for high (HA) and low (LA) swim stress-induced analgesia (SSIA), were used in the study. To assess the influence of opioid agonists (morphine and loperamide) and antagonists (naloxone hydrochloride, NLX and naloxone methiodide, NLXM) on GI motility, whole GI transit (whole GIT) and upper GIT assays were conducted. To evaluate the expression of opioid receptors in the ileum and colon of HA and LA mice, immune staining was performed. KEY RESULTS The effect of morphine was more pronounced in HA line, whereas loperamide exerted a stronger effect in LA mice. Furthermore, NLX and NLXM differentially abolished the inhibitory action of the central and peripheral opioid system on whole and upper GIT in HA and LA mice. The differences in GI motility between HA and LA mice coexisted with parallel changes in the expression of opioid receptors in the ileum and colon. CONCLUSIONS & INFERENCES Differences in the activity of the endogenous opioid system are responsible for the vulnerability to changes in GI motility during treatment with opioids. Our findings validate the HA/LA model for further studies on opioids in the GI tract.
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Affiliation(s)
- A Wasilewski
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - A Lesniak
- Department of Neuropeptide Laboratory, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland.,Department of Pharmaceutical Biosciences, Uppsala University, Uppsala, Sweden
| | - M Bujalska-Zadrozny
- Department of Pharmacodynamics, Centre for Preclinical Research and Technology, Medical University of Warsaw, Warsaw, Poland
| | - B Sadowski
- Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Magdalenka, Poland
| | - J Fichna
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - M Sacharczuk
- Department of Neuropeptide Laboratory, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland.,Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Magdalenka, Poland
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13
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Salaga M, Polepally PR, Zielinska M, Marynowski M, Fabisiak A, Murawska N, Sobczak K, Sacharczuk M, Do Rego JC, Roth BL, Zjawiony JK, Fichna J. Salvinorin A analogues PR-37 and PR-38 attenuate compound 48/80-induced itch responses in mice. Br J Pharmacol 2015; 172:4331-41. [PMID: 26040667 DOI: 10.1111/bph.13212] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Revised: 05/26/2015] [Accepted: 06/01/2015] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND AND PURPOSE The opioid system plays a crucial role in several physiological processes in the CNS and in the periphery. It has also been shown that selective opioid receptor agonists exert potent inhibitory action on pruritus and pain. In this study we examined whether two analogues of Salvinorin A, PR-37 and PR-38, exhibit antipruritic properties in mice. EXPERIMENTAL APPROACH To examine the antiscratch effect of PR-37 and PR-38 we used a mouse model of compound 48/80-induced pruritus. In order to elucidate the mechanism of action of tested compounds, specific antagonists of opioid and cannabinoid receptors were used. The effect of PR-37 on the CNS was assessed by measuring motor parameters and exploratory behaviours in mice. KEY RESULTS PR-37 and PR-38, jnjected s.c., significantly reduced the number of compound 48/80-induced scratching behaviours in mice in a dose- and time-dependent manner. PR-38 was also active when orally administered. The antiscratch activity of PR-37 was blocked by the selective κ opioid receptor antagonist, nor-binaltorphimine, and that of PR-38 by the selective μ opioid receptor antagonist, β-funaltrexamine. CONCLUSION AND IMPLICATIONS In conclusion, a novel framework for the development of new antipruritic drugs derived from salvinorin A has been validated.
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Affiliation(s)
- M Salaga
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - P R Polepally
- Department of BioMolecular Sciences, Division of Pharmacognosy and Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS, USA
| | - M Zielinska
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - M Marynowski
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - A Fabisiak
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - N Murawska
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - K Sobczak
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - M Sacharczuk
- Department of Molecular Cytogenetic, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Poland
| | - J C Do Rego
- Platform of Behavioural Analysis (SCAC), Institute for Research and Innovation in Biomedicine (IRIB), Faculty of Medicine & Pharmacy, University of Rouen, Rouen Cedex, France
| | - B L Roth
- Department of Pharmacology, Division of Chemical Biology and Medicinal Chemistry, Medical School, NIMH Psychoactive Drug Screening Program, University of North Carolina, Chapel Hill, NC, USA
| | - J K Zjawiony
- Department of BioMolecular Sciences, Division of Pharmacognosy and Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS, USA
| | - J Fichna
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
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Sacharczuk M, Lesniak A, Lipkowski AW, Korostynski M, Przewlocki R, Sadowski B. Association between the A107V substitution in the δ-opioid receptors and ethanol drinking in mice selected for high and low analgesia. Addict Biol 2014; 19:643-51. [PMID: 23301597 DOI: 10.1111/adb.12030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Experimental evidence suggests that endogenous opioids play an important role in the development of ethanol addiction. In this study, we employed two mouse lines divergently bred for opioid-mediated stress-induced analgesia. In comparison with HA (high analgesia line) mice, LA (low analgesia line) mice, having lower opioid receptor system activity, manifest enhanced basal as well as stress-induced ethanol drinking. Here, we found that recently discovered C320T transition in exon 2 of the δ-opioid receptor gene (EU446125.1), which results in an A107V substitution (ACA23171.1), leads to higher ethanol preference in CT mice compared with CC homozygotes. This genetic association is particularly evident under chronic mild stress (CMS) conditions. The interaction between stress and ethanol intake was significantly stronger in HA than in LA mice. Ethanol almost completely attenuated the pro-depressive effect of CMS (assessed with the tail suspension test) in both the CC and CT genotypes in the HA line. In the LA mice, a lack of response to ethanol was observed in the CC genotype, whereas ethanol consumption strengthened depressive-like behaviours in CT individuals. Our results suggest that constitutively active A107V substitution in δ-opioid receptors may be involved in stress-enhanced vulnerability to ethanol abuse and in the risk of ethanol dependence.
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Affiliation(s)
- Mariusz Sacharczuk
- Department of Molecular Cytogenetics, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Poland
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15
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Ragan AR, Lesniak A, Bochynska-Czyz M, Kosson A, Szymanska H, Pysniak K, Gajewska M, Lipkowski AW, Sacharczuk M. Chronic mild stress facilitates melanoma tumor growth in mouse lines selected for high and low stress-induced analgesia. Stress 2013; 16:571-80. [PMID: 23688070 DOI: 10.3109/10253890.2013.807244] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Both chronic stress conditions and hyperergic reaction to environmental stress are known to enhance cancer susceptibility. We described two mouse lines that displayed high (HA) and low (LA) swim stress-induced analgesia (SSIA) to investigate the relationship between inherited differences in sensitivity to stress and proneness to an increased growth rate of subcutaneously inoculated melanoma. These lines display several genetic and physiological differences, among which distinct sensitivity to mutagens and susceptibility to cancer are especially noticeable. High analgesic mice display high proneness both to stress and a rapid local spread of B16F0 melanoma. However, stress-resistant LA mice do not develop melanoma tumors after inoculation, or if so, tumors regress spontaneously. We found that the chronic mild stress (CMS) procedure leads to enhanced interlinear differences in melanoma susceptibility. Tumors developed faster in stress conditions in both lines. However, LA mice still displayed a tendency for spontaneous regression, and 50% of LA mice did not develop a tumor, even under stressed conditions. Moreover, we showed that chronic stress, but not tumor progression, induces depressive behavior, which may be an important clue in cancer therapy. Our results clearly indicate how the interaction between genetic susceptibility to stress and environmental stress determine the risk and progression of melanoma. To our knowledge, HA/LA mouse lines are the first animal models of distinct melanoma progression mediated by inherited differences in stress reactivity.
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Affiliation(s)
- Agnieszka R Ragan
- Department of Molecular Cytogenetics, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Postepu 1 Str., 05-552 Magdalenka, Poland
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Effects of chronic stress on prefrontal cortex transcriptome in mice displaying different genetic backgrounds. J Mol Neurosci 2012; 50:33-57. [PMID: 22836882 PMCID: PMC3622021 DOI: 10.1007/s12031-012-9850-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 06/25/2012] [Indexed: 01/27/2023]
Abstract
There is increasing evidence that depression derives from the impact of environmental pressure on genetically susceptible individuals. We analyzed the effects of chronic mild stress (CMS) on prefrontal cortex transcriptome of two strains of mice bred for high (HA)and low (LA) swim stress-induced analgesia that differ in basal transcriptomic profiles and depression-like behaviors. We found that CMS affected 96 and 92 genes in HA and LA mice, respectively. Among genes with the same expression pattern in both strains after CMS, we observed robust upregulation of Ttr gene coding transthyretin involved in amyloidosis, seizures, stroke-like episodes, or dementia. Strain-specific HA transcriptome affected by CMS was associated with deregulation of genes involved in insulin secretion (Acvr1c, Nnat, and Pfkm), neuropeptide hormone activity (Nts and Trh), and dopamine receptor mediated signaling pathway (Clic6, Drd1a, and Ppp1r1b). LA transcriptome affected by CMS was associated with genes involved in behavioral response to stimulus (Fcer1g, Rasd2, S100a8, S100a9, Crhr1, Grm5, and Prkcc), immune effector processes (Fcer1g, Mpo, and Igh-VJ558), diacylglycerol binding (Rasgrp1, Dgke, Dgkg, and Prkcc), and long-term depression (Crhr1, Grm5, and Prkcc) and/or coding elements of dendrites (Crmp1, Cntnap4, and Prkcc) and myelin proteins (Gpm6a, Mal, and Mog). The results indicate significant contribution of genetic background to differences in stress response gene expression in the mouse prefrontal cortex.
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Lisowski P, Stankiewicz AM, Goscik J, Wieczorek M, Zwierzchowski L, Swiergiel AH. Selection for stress-induced analgesia affects the mouse hippocampal transcriptome. J Mol Neurosci 2011; 47:101-12. [PMID: 22173874 DOI: 10.1007/s12031-011-9692-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Accepted: 12/05/2011] [Indexed: 12/01/2022]
Abstract
Stress responsiveness, including pain sensitivity and stress-induced analgesia (SIA), depends on genotype and, partially, is mediated by hippocampus. The present study examined differences in constitutive gene expression in hippocampus in lines of mice bred for high (HA) and low (LA) swim SIA. Between the lines, we found 1.5-fold or greater differences in expression of 205 genes in the hippocampus in nonstressed animals. The identity of these genes indicates that selective breeding for swim SIA affected many aspects of hippocampal neurons physiology, including metabolism, structural changes, and cellular signaling. Genes involved in calcium signaling pathway, including Slc8a1, Slc8a2, Prkcc, and Ptk2b, were upregulated in LA mice. In HA mice, robust upregulation of genes coding some transcription factors (Klf5) or receptors for neurotensin (Ntsr2) and GABA (Gabard) suggests the genetic basis for a novel mechanism of the non-opioid type of SIA in HA animals. Additional groups of differentially expressed genes represented functional networks involved in carbohydrate metabolism, gene expression regulation, and molecular transport. Our data indicate that selection for a single and very specific stress response trait, swim SIA, alters hippocampal gene expression. The results suggest that individual stress responsiveness may be associated with characteristics of the constitutive hippocampal transcriptome.
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Affiliation(s)
- Pawel Lisowski
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Poland.
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18
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Benedetti C. Personalized pain therapy: basic consideration of an old concept with new scientific basis. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s12682-011-0104-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sacharczuk M, Lesniak A, Korostynski M, Przewlocki R, Lipkowski A, Jaszczak K, Sadowski B. A polymorphism in exon 2 of the δ-opioid receptor affects nociception in response to specific agonists and antagonists in mice selectively bred for high and low analgesia. Pain 2010; 149:506-513. [DOI: 10.1016/j.pain.2010.03.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Revised: 02/23/2010] [Accepted: 03/15/2010] [Indexed: 01/21/2023]
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20
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Butler RK, Finn DP. Stress-induced analgesia. Prog Neurobiol 2009; 88:184-202. [PMID: 19393288 DOI: 10.1016/j.pneurobio.2009.04.003] [Citation(s) in RCA: 442] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2008] [Revised: 03/15/2009] [Accepted: 04/15/2009] [Indexed: 12/21/2022]
Abstract
For over 30 years, scientists have been investigating the phenomenon of pain suppression upon exposure to unconditioned or conditioned stressful stimuli, commonly known as stress-induced analgesia. These studies have revealed that individual sensitivity to stress-induced analgesia can vary greatly and that this sensitivity is coupled to many different phenotypes including the degree of opioid sensitivity and startle response. Furthermore, stress-induced analgesia is influenced by age, gender, and prior experience to stressful, painful, or other environmental stimuli. Stress-induced analgesia is mediated by activation of the descending inhibitory pain pathway. Pharmacological and neurochemical studies have demonstrated involvement of a large number of neurotransmitters and neuropeptides. In particular, there are key roles for the endogenous opioid, monoamine, cannabinoid, gamma-aminobutyric acid and glutamate systems. The study of stress-induced analgesia has enhanced our understanding of the fundamental physiology of pain and stress and can be a useful approach for uncovering new therapeutic targets for the treatment of pain and stress-related disorders.
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Affiliation(s)
- Ryan K Butler
- Department of Pharmacology and Therapeutics, NCBES Neuroscience Cluster and Centre for Pain Research, National University of Ireland, Galway, University Road, Galway, Ireland
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21
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Differences in ethanol drinking between mice selected for high and low swim stress-induced analgesia. Alcohol 2008; 42:487-92. [PMID: 18760717 DOI: 10.1016/j.alcohol.2008.05.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2007] [Revised: 04/27/2008] [Accepted: 05/23/2008] [Indexed: 11/20/2022]
Abstract
Alcoholism is a complex disorder, still not fully understood, in which environmental and inherited risk factors play essential roles. Of particular importance may be chronic exposure to stress thought to increase preference for ethanol in genetically susceptible individuals. Animal and human data suggest that the opioid system may be involved in the development of alcohol dependence. We studied the effects of chronic mild stress (CMS) on the voluntary intake of 8% ethanol in the mouse lines displaying high (HA) or low (LA) swim stress-induced analgesia. These lines differ in the activity of the endogenous opioid system. Normally, 8% ethanol is aversive to rodents. We found that LA mice with the low opioid system activity exposed to CMS manifested greater ethanol intake than under no stress conditions. No such effect of CMS on ethanol consumption was observed in HA mice that display the enhanced opioid system activity. We conclude that CMS imposed on individuals with a genetically determined low opioid activity may favor the development of ethanol abuse.
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22
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Sanseau P, Lewis K. Genetics of Pain. Pain 2003. [DOI: 10.1201/9780203911259.ch28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Lapo IB, Konarzewski M, Sadowski B. Effect of cold acclimation and repeated swimming on opioid and nonopioid swim stress-induced analgesia in selectively bred mice. Physiol Behav 2003; 78:345-50. [PMID: 12676268 DOI: 10.1016/s0031-9384(02)01004-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Swiss-Webster mice selectively bred for high swim stress-induced analgesia (SSIA) were exposed to continuous ambient cold (5 degrees C) for 6 weeks or to daily 3-min swims for 14 consecutive days either in 20 or 32 degrees C water. Thereafter, mice subjected to the particular procedure were injected intraperitoneally with 10 mg/kg of naltrexone HCl and were tested for modification of the opioid and nonopioid component of SSIA. SSIA was reduced following swims at either water temperature and was antagonized by naltrexone to greater extent than in nonswimming mice. Thus, the nonopioid (i.e. naltrexone-resistant) portion of the overall SSIA was significantly reduced, whereas the opioid (naltrexone-sensitive) portion became relatively augmented. In contrast, SSIA differed neither in magnitude nor in sensitivity to naltrexone between cold-acclimated and unacclimated mice. Swim hypothermia as well as the nonopioid component of SSIA were decreased after repeated swimming at 32 and 20 degrees C, but remained unchanged after cold acclimation. This argues for the essential role of an extrathermal, probably emotional in nature, factor not only in the elicitation of nonopioid SSIA, but also in the modulation of thermoregulatory processes during swimming. We suggest that the emergency component of swim stress, together with initial moderate hypothermic challenge, first produces the opioid form of SSIA, and subsequently, as the swim continues, also affects the thermoregulatory processes maintaining thermal homeostasis. This causes further increase in swim hypothermia and raises its stressing property to induce the nonopioid form of SSIA.
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Affiliation(s)
- Iwona B Lapo
- Institute for Genetics and Animal Breeding, Polish Academy of Sciences, 05-552 Wólka Kosowska, Poland.
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24
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Sacharczuk M, Jaszczak K, Sadowski B. Cytogenetic comparison of the sensitivity to mutagens in mice selected for high (HA) and low (LA) swim stress-induced analgesia. Mutat Res 2003; 535:95-102. [PMID: 12547287 DOI: 10.1016/s1383-5718(02)00290-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Sensitivity to mutagens was studied in mouse lines selectively bred for high analgesia (HA) and for low analgesia (LA) induced by 3-min swimming in 20 degrees C water. Apart from pain-related traits HA mice also manifest, as compared to the LA line, higher emotionality in various behavioural tests, and cope worse with the hypothermic challenge of swimming in cold water. In the present study HA mice appeared more susceptible to the mutagenic effect of whole-body gamma-radiation and mitomycin-C injection. Both treatments caused higher frequencies of chromosomal aberrations and micronucleus in bone marrow cells in the HA than in the LA line. The results are discussed in terms of a genetic correlation between animals' susceptibility to environmental stressors and the mechanism of mutagenesis. As shown by our recent molecular study, the selection for magnitude of swim analgesia has differentiated the parental outbred population into two distinct genotypes characterised by specific minisatellite and microsatellite sequences for each line, which may be genetic markers of particular traits. We conceive that the breeding strategy, along with the differentiation of stress-related phenomena, has altered the frequencies of genes controlling DNA repair in each line.
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Affiliation(s)
- Mariusz Sacharczuk
- Department of Molecular Cytogenetics, Institute of Genetics and Animal Breeding of Polish Academy of Sciences in Jastrzêbiec, 05-556 Wolka Kosowska, Poland.
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Flores CM, Mogil JS. The pharmacogenetics of analgesia: toward a genetically-based approach to pain management. Pharmacogenomics 2001; 2:177-94. [PMID: 11535108 DOI: 10.1517/14622416.2.3.177] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Interindividual differences in the experience of pain have been appreciated clinically for over a century. More recently, there has been a growing body of evidence demonstrating differences in analgesic response to various pharmacotherapies, although the source of this variability largely remains to be explained. To this end, basic science research is beginning to identify the allelic variants that underlie such antinociceptive variability using a multiplicity of animal models, and powerful genetic approaches are being exploited to accelerate this process. Although the vast majority of these studies have focused on the pharmacogenetics of opioids, owing to their prominent status as analgesics, the number of pharmacotherapies evincing genetically-based variability is rapidly expanding. In addition, analogous studies have been undertaken in humans, as a small but growing number of clinical trials have begun to evaluate prospectively the existence, if oftentimes not the origin, of interindividual differences in analgesic drug response. Importantly, with a few notable exceptions, such efforts have primarily identified differences in analgesic efficacy and/or potency between male and female human subjects. Looking toward the future development of one or more widely utilised, pharmacogenetic screens that would lead to modifications in treatment planning, at least with respect to the pharmacologic management of pain, this review will document the breadth of genetically-based variability in drug-mediated antinociception in animals. Specific examples in which the gene or genes underlying such variability have been postulated or identified will be given, while highlighting the effect of sex and its interactions with other genetic backgrounds. Finally, we will summarise and evaluate the literature on pharmacogenetic differences in human analgesic drug response, for which the influence of sex has served as one of the better studied and heuristically insightful examples.
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Affiliation(s)
- C M Flores
- The University of Texas Health Science Center at San Antonio, Department of Endodontics, MSC 7892, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA.
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Panocka I, Massi M, Lapo I, Swiderski T, Kowalczyk M, Sadowski B. Antidepressant-type effect of the NK3 tachykinin receptor agonist aminosenktide in mouse lines differing in endogenous opioid system activity. Peptides 2001; 22:1037-42. [PMID: 11445231 DOI: 10.1016/s0196-9781(01)00438-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The influence of the tachykinin NK3 receptor agonist, aminosenktide on the immobility in the forced swimming test was studied in mouse lines selectively bred for divergent magnitudes of stress-induced analgesia. The high analgesia (HA) line is known to display enhanced, and the low analgesia (LA) line displays reduced activity of the opioid system. Aminosenktide at doses of 125 microg/kg or 250 microg/kg intraperitoneally (IP) reduced, in naltrexone-reversible manner, the immobility more of opioid receptor-dense HA than of unselected mice, but was ineffective in the opioid receptor-deficient LA line. The effect of aminosenktide was quite similar to the antiimmobility action of desipramine (10 mg/kg IP), a prototypic antidepressant agent. None of the compounds increased animals' locomotion as found with an open field test; therefore their antiimmobility effect cannot be attributed to a change in general motility. The results claim that aminosenktide causes an antidepressant effect, and endogenous opioids are involved in this process.
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Affiliation(s)
- I Panocka
- Department of Pharmacology and Toxicology, Military Institute of Hygiene and Epidemiology, 01-163 4 Warsaw, Kozielska, Poland.
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Abstract
The present article reviews the studies so far published on the psychopharmacological effects mediated by tachykinin NK-3 receptors in laboratory animals. Central administration of NK-3 receptor agonists has been reported to attenuate alcohol intake in alcohol-preferring rats and to evoke conditioned place preference. These findings suggest that NK-3 receptors may affect reward processes to drugs of abuse. Anxiolytic-like and antidepressant-like effects have been previously reported for NK-1 receptor antagonists, and anxiolytic-like effects for NK-2 receptor antagonists. More recently, it has been shown that NK-3 receptor agonists have anxiolytic-like and antidepressant-like effects in mice and rats, while an NK-3 receptor antagonist was reported to be anxiogenic in mice. These findings indicate that different TK receptor subtypes may be involved in anxiolytic-like and antidepressant-like effects in laboratory animals and raise interest for the possible role of NK-3 receptors in the control of anxiety and depression in man.
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Affiliation(s)
- M Massi
- Department of Pharmacological Sciences and Experimental Medicine, University of Camerino, 62032, Camerino, Italy.
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28
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Błaszczyk JW, Tajchert K, Lapo I, Sadowski B. Acoustic startle and open-field behavior in mice bred for magnitude of swim analgesia. Physiol Behav 2000; 70:471-6. [PMID: 11111000 DOI: 10.1016/s0031-9384(00)00289-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Acoustic startle response (ASR) and open-field activity was examined in the 46th generation of mice that have been selectively bred for high analgesia (HA) and for low analgesia (LA) induced by 3-min swimming in 20 degrees C water. These lines were earlier found to differ in brain opioid receptor density and in the expression of opioid-mediated phenomena, as analgesic sensitivity to opiates and reversibility of swim stress-induced analgesia (SSIA) by naloxone. For comparison, a randomly bred control (C) line was used. To measure the amplitude of ASR, the mice were exposed to 110-dB acoustic stimuli in a Coulbourn apparatus. In saline-injected mice, the ASR force was found significantly lower in the LA than in the HA, as well in the C line, but did not differ between the two last lines. Naltrexone hydrochloride (10 mg/kg IP 30 min before ASR testing) augmented the startle in the opioid receptor-dense HA line, but had no effect in the opioid receptor-deficient LA line, as well in the C line; therefore, the ASR magnitude in naltrexone-injected HA mice was significantly higher compared to the C line. HA mice displayed less activity in an open-field test; that is, they remained immobile longer in the center of the field, and thereafter performed less ambulation and less rearing against the wall compared to the LA line. Naltrexone failed to modify the open-field activity in any line. The results confirm that the pattern of ASR depends on the genetic makeup of the animals. The higher amplitude of ASR, taken together with the lower open-field activity of HA mice, can be interpreted in terms of higher anxiety level, compared to the LA line. It is suggested that the higher ASR in HA mice relies on a nonopioid mechanism, which is tonically inhibited by the opioid system.
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Affiliation(s)
- J W Błaszczyk
- Nencki Institute for Experimental Biology, Polish Academy of Sciences, 02-093 Warsaw, Poland
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Mogil JS. The genetic mediation of individual differences in sensitivity to pain and its inhibition. Proc Natl Acad Sci U S A 1999; 96:7744-51. [PMID: 10393892 PMCID: PMC33613 DOI: 10.1073/pnas.96.14.7744] [Citation(s) in RCA: 306] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The underlying bases of the considerable interindividual variability in pain-related traits are starting to be revealed. Although the relative importance of genes versus experience in human pain perception remains unclear, rodent populations display large and heritable differences in both nociceptive and analgesic sensitivity. The identification and characterization of particularly divergent populations provides a powerful initial step in the genetic analysis of pain, because these models can be exploited to identify genes contributing to the behavior-level variability. Ultimately, DNA sequence differences representing the differential alleles at pain-relevant genes can be identified. Thus, by using a combination of "top-down" and "bottom-up" strategies, we are now able to genetically dissect even complex biological traits like pain. The present review summarizes the current progress toward these ends in both humans and rodents.
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Affiliation(s)
- J S Mogil
- Department of Psychology and Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA.
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Sadowski B, Konarzewski M. Analgesia in selectively bred mice exposed to cold in helium/oxygen atmosphere. Physiol Behav 1999; 66:145-51. [PMID: 10222487 DOI: 10.1016/s0031-9384(98)00282-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
In order to evaluate the stressing role of swim hypothermia in producing swim stress-induced analgesia (SSIA), we examined whether a mere decrease in the animals' core temperature without swimming would be sufficient to elicit analgesia. The subjects were Swiss-Webster mice selectively bred for 37 and 40 generations for divergent magnitudes of SSIA. High (HA) and low analgesia (LA) mice were exposed for 15 min to temperatures in the range between -5 and +20 degrees C in 79% He/21% O2 (Heliox) atmosphere. The Heliox exposure produced ambient temperature-dependent hypothermia and analgesia, as assessed with a hot-plate test (56 degrees C). The post-Heliox analgesia was of much higher magnitude in HA than in LA mice. The steeper slope of regression of the magnitude of analgesia upon hypothermia in HA mice indicates that these mice are far more sensitive to the analgesic effect of hypothermia than LA mice. Naltrexone HCl (10 mg/kg i.p.) attenuated analgesia in ambient temperature-dependent manner in HA, but not in LA mice. In view of the apparent similarity of Heliox-induced analgesia and SSIA we suggest that hypothermia is a powerful component of swim stress to induce SSIA in the mouse.
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Affiliation(s)
- B Sadowski
- Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Mroków, Poland
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Lutfy K, Sadowski B, Marek P, Kwon IS, Keana JF, Weber E. Differential sensitivity of mice bred for stress-induced analgesia to morphine and ACEA-1011 in the formalin test. Pharmacol Biochem Behav 1996; 54:495-500. [PMID: 8743614 DOI: 10.1016/0091-3057(95)02285-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The antinociceptive effect of morphine, an opioid receptor agonist, and ACEA-1011, a novel NMDA receptor/glycine site antagonist, was examined in the formalin test in mice selectively bred for high (HA) and low (LA) swim stress-induced analgesia (SSIA). A subcutaneous (SC) injection of formalin produced a biphasic nociceptive response in both lines. HA mice spent more time licking the injected paw than the LA mice in both phases of the formalin test. Morphine was equally potent in the early phase in both lines, but it was more potent in HA mice than in LA mice in the tonic late phase of the formalin test. Similarly, ACEA-1011 produced an equally potent antinociceptive effect in the early phase in both lines; however, the compound was more potent in LA mice than in HA mice in the tonic late phase of the formalin test. These data suggest that in HA mice antinociception in the tonic late phase of the formalin test is mediated largely by an opioid-mediated mechanism, whereas in the opioid-deficient LA line at least a nonopioid-mediated mechanism involving the NMDA receptor is also implicated.
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Affiliation(s)
- K Lutfy
- Department of Pharmacology, College of Medicine, University of California, Irvine 92717, USA
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Mogil JS, Sternberg WF, Marek P, Sadowski B, Belknap JK, Liebeskind JC. The genetics of pain and pain inhibition. Proc Natl Acad Sci U S A 1996; 93:3048-55. [PMID: 8610166 PMCID: PMC39759 DOI: 10.1073/pnas.93.7.3048] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The present review summarizes the current state of knowledge about the genetics of pain-related phenomena and illustrates the scope and power of genetic approaches to the study of pain. We focus on work performed in our laboratories in Jastrzebiec, Poland; Portland, OR; and Los Angeles, which we feel demonstrates the continuing usefulness of classical genetic approaches, especially when used in combination with newly available molecular genetic techniques.
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Affiliation(s)
- J S Mogil
- Department of Psychology, University of California, Los Angeles, 90095-1563, USA
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Mogil JS, Sternberg WF, Balian H, Liebeskind JC, Sadowski B. Opioid and nonopioid swim stress-induced analgesia: a parametric analysis in mice. Physiol Behav 1996; 59:123-32. [PMID: 8848471 DOI: 10.1016/0031-9384(95)02073-x] [Citation(s) in RCA: 104] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Environmental stress causes the activation of two types of endogenous pain inhibitory systems in animals: opioid analgesia is antagonized by opiate receptor blockers (e.g., naloxone and naltrexone), whereas analgesia produced by nonopioid systems is insensitive to such antagonism. A large literature documents that the parameters of the laboratory stressor will determine the neurochemical identity of the resultant analgesia. In rats, low severity stressors produce opioid analgesia and higher severity stressors produce nonopioid analgesia. A recent parametric analysis of swim stress-induced analgesia (SSIA) in the female Quackenbush mouse, however, observed the opposite pattern. The present study is a parametric analysis of SSIA using a range of swim temperatures (15-38 degrees C), swim durations (45 s to 7 min), and genetic models [male Swiss-Webster mice, and mice selectively bred from this outbred strain for high (HA), low (LA), or control SSIA]. We find that in nonselected mice low severity swims (i.e., warm temperature, short duration) produce naloxone-sensitive opioid SSIA, whereas high severity swims (i.e., cold temperature, long duration) produce nonopioid SSIA. This pattern is also seen in HA mice displaying very high analgesic magnitudes, but not in LA mice displaying minimal SSIA. In the selectively bred mice, analgesia and hypothermia from forced swimming are positively correlated, but can be dissociated both genetically and neurochemically. Furthermore, swimming in body temperature (38 degrees C) water produces analgesia without concommitant hypothermia, and the increased magnitude of 38 degrees C SSIA displayed by HA mice over control levels is entirely opioid.
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Affiliation(s)
- J S Mogil
- Department of Psychology, University of California at Los Angeles 90024, USA
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Mogil JS, Flodman P, Spence MA, Sternberg WF, Kest B, Sadowski B, Liebeskind JC, Belknap JK. Oligogenic determination of morphine analgesic magnitude: a genetic analysis of selectively bred mouse lines. Behav Genet 1995; 25:397-406. [PMID: 7575370 DOI: 10.1007/bf02197290] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Two ongoing selective breeding projects have produced mice that display divergent analgesic responses to morphine. These two projects have selected for similar phenotypes: high and low levorphanol analgesia (HAR/LAR lines; Portland, OR) and high and low swim stress-induced analgesia (HA/LA lines; Jastrzebiec, Poland). Evidence suggests genetic commonalities between mice of the two projects. Using a Mendelian breeding protocol, we have recently found that one or two genetic loci predominantly determine the high morphine analgesia exhibited by HA mice. In the present study we demonstrate that the differential morphine analgesia (5 mg/kg, i.p.) displayed by HAR and LAR mice is similarly oligogenic, predominantly determined by two unlinked loci. A complementation analysis, in which the analgesic responses to morphine of the recessive homozygotes of each project (HAR and HA) were compared to those of their hybrid offspring (HAR x HA), revealed that different genetic loci have been fixed in each project. An intriguing bimodal distribution was observed in the HAR x HA population: Some HAR x HA hybrids displayed greater morphine analgesia than either HAR or HA mice, whereas others displayed minimal analgesia. LAR x LA hybrids displayed less analgesia than either LAR or LA mice. The analgesic responses of HAR x LA and LAR x HA mice were comparable to those of their low-line parents. These findings indicate not only that different loci were responsible for producing high morphine responders in each selection project but that these distinct loci can interact synergistically to produce "superhigh" and "superlow" responders.
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Affiliation(s)
- J S Mogil
- Research Service (151W), VA Medical Center, Portland, Oregon 97201, USA
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Mogil JS, Marek P, Flodman P, Spence AM, Sternberg WF, Kest B, Sadowski B, Liebeskind JC. One or two genetic loci mediate high opiate analgesia in selectively bred mice. Pain 1995; 60:125-135. [PMID: 7784097 DOI: 10.1016/0304-3959(94)00098-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The analgesic responses of humans and laboratory animals are characterized by substantial individual differences. The genetic basis of this variability can be studied experimentally in rodents using a program of selective breeding. One such program selected for high (HA) and low (LA) swim stress-induced analgesia (SSIA) on the hot-plate (56 degrees C) test in Swiss-Webster mice. These lines, which have been selectively bred for more than 25 generations, display markedly divergent opioid-mediated SSIA (3-min swims in 38 degrees C water), morphine analgesia (10 mg/kg, i.p.), and analgesia to the kappa-receptor agonist, U-50,488H (30 mg/kg, i.p.). The present study investigated the mode of inheritance of these opioid analgesias in HA and LA mice, using Mendelian genetic analyses. We report that the differential sensitivity of HA and LA mice to each of these analgesic manipulations appears to be determined oligogenically, by one or at the most two major genetic loci. The loci associated with each type of analgesia do not co-segregate, however, indicating that three distinct oligogenic effects have been identified. These findings suggest that the genetic determination of analgesic mechanisms may have simple components and as such may be amenable to further analysis using molecular genetic techniques.
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Affiliation(s)
- Jeffrey S Mogil
- Research Service (151W), VA Medical Center, Portland, OR 97201 USA Oregon Health Sciences University, Portland, OR 97201 USA ACEA Pharmaceuticals, Plumwood House 1003, Health Sciences Road West, Irvine, CA 92715 USA Division of Human Genetics and Birth Defects, Department of Pediatrics, University of California at Irvine, Irvine, CA 92717 USA Department of Psychology and Brain Research Institute, University of California at Los Angeles, Los Angeles, CA 90024 USA Department of Behavioural Physiology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec Poland
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Lutfy K, Sadowski B, Kwon IS, Weber E. Morphine analgesia and tolerance in mice selectively bred for divergent swim stress-induced analgesia. Eur J Pharmacol 1994; 265:171-4. [PMID: 7875233 DOI: 10.1016/0014-2999(94)90428-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Morphine-induced analgesia and tolerance were examined in Swiss Webster mice selectively bred for high and low swim stress-induced analgesia. Morphine produced a dose-dependent analgesia in both lines; it was 4-fold more potent in the high analgesia line than in the low analgesia line. Despite the differences in morphine-induced analgesia, the degree of tolerance was the same in both lines. Together, these data suggest that selective breeding of mice for high and low swim stress-induced analgesia produced a striking difference in morphine-induced analgesia without affecting the degree of tolerance. Thus, while there is a common genetic determination in swim stress-induced and morphine-induced analgesia, the development of tolerance to morphine possibly relies on a different genetic background.
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Affiliation(s)
- K Lutfy
- Department of Pharmacology, School of Medicine, University of California, Irvine 92717
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Mogil JS, Marek P, O'Toole LA, Helms ML, Sadowski B, Liebeskind JC, Belknap JK. Mu-opiate receptor binding is up-regulated in mice selectively bred for high stress-induced analgesia. Brain Res 1994; 653:16-22. [PMID: 7982048 DOI: 10.1016/0006-8993(94)90366-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Pain perception and sensitivity to opiate analgesics strongly depend on genotype. Mice selectively bred for high (HA) and low (LA) swim stress-induced analgesia display markedly divergent morphine analgesia, a difference that appears to be determined by one or at the most two major genes. In an attempt to provide candidate genes mediating the supranormal analgesia displayed by HA mice, we performed mu-opiate receptor binding on 27th generation HA, LA, and control (C) mice using [3H]naloxone. HA mice were found to have significantly higher whole-brain receptor density (Bmax) than LA mice in whole brain homogenates; no significant difference in affinity (Kd) was observed. Quantitative autoradiography confirmed the line difference in whole-brain receptor binding. In the medial thalamus, a brain area implicated in ascending pathways of pain inhibition, HA mice were found to display significantly higher [3H]naloxone binding than C mice (a 64% increase) and LA mice (a 128% increase). No significant line differences were observed in any other brain locus. Thalamic mu receptors may therefore play an important role in a central 'volume control' mechanism of pain inhibition, and underlie individual differences in the responses of mice to opiate analgesic drugs.
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Affiliation(s)
- J S Mogil
- Research Service (151W), VA Medical Center, Portland, OR 97201
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Kamei J, Iwamoto Y, Hitosugi H, Misawa M, Nagase H, Kasuya Y. Differential mediation of cold water swim stress-induced antinociception by delta-opioid receptor subtypes in diabetic mice. Life Sci 1994; 54:PL425-30. [PMID: 8196487 DOI: 10.1016/0024-3205(94)90127-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The involvement of delta-opioid receptor subtypes in cold water swim stress (CWSS)-induced antinociception in diabetic mice was compared with that in non-diabetic mice. Three-minute swim stress produced significant antinociception in both diabetic and non-diabetic mice as determined by the tail-pinch test. However, the extent of CWSS-induced antinociception in diabetic mice was significantly greater than that in non-diabetic mice. Pretreatment with naltriben, a selective delta 2-opioid receptor antagonist, significantly attenuated CWSS-induced antinociception in both non-diabetic and diabetic mice. In contrast, although 7-benzylidenenaltrexone, a selective delta 1-opioid receptor antagonist, significantly attenuated CWSS-induced antinociception in diabetic mice, it had no effect in non-diabetic mice. These results suggest that CWSS-induced antinociception in non-diabetic mice is mediated by delta 2-opioid receptors, whereas CWSS-induced antinociception in diabetic mice is mediated by both delta 1- and delta 2-opioid receptors. Furthermore, the enhanced CWSS-induced antinociception in diabetic mice may be due to the activation of delta 1-opioid receptors.
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Affiliation(s)
- J Kamei
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Hoshi University, Tokyo, Japan
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Sadowski B, Panocka I. Cross-tolerance between morphine and swim analgesia in mice selectively bred for high and low stress-induced analgesia. Pharmacol Biochem Behav 1993; 45:527-31. [PMID: 8332612 DOI: 10.1016/0091-3057(93)90501-j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Mice selectively bred for high (HA) and for low analgesia (LA) induced by 3-min swimming at 20 degrees C and unselected controls (C) were injected three times daily for 3 days with 20 mg/kg morphine HCl. The analgesic effect of 10 mg/kg morphine in nontolerant mice differed between the lines in the rank order of HA > C > LA and significantly decreased after repeated treatment with morphine, as revealed by the hotplate test (56 degrees C). The tolerance to morphine analgesia was more pronounced in HA than in C mice but did not develop at all in LA mice. Similarly, the magnitude of swim-induced analgesia in morphine tolerant mice decreased to a greater degree in the HA than the C line but did not change in LA mice. Naloxone HCl (1 and 10 mg/kg) attenuated swim analgesia more in nontolerant HA than C mice but had no effect in morphine-tolerant HA and C and in all LA mice. The differential degree of morphine tolerance and cross-tolerance with swim analgesia suggests that the strategy of selective breeding toward divergent magnitudes of stress-induced analgesia has differentiated opioid involvement in endogenous pain inhibition in the selected lines.
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Affiliation(s)
- B Sadowski
- Department of Behavioral Physiology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Mrokow
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Marek P, Mogil JS, Belknap JK, Sadowski B, Liebeskind JC. Levorphanol and swim stress-induced analgesia in selectively bred mice: evidence for genetic commonalities. Brain Res 1993; 608:353-7. [PMID: 8495369 DOI: 10.1016/0006-8993(93)91479-c] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Two independent selective breeding programs have developed divergent lines of mice expressing either high and low swim stress-induced analgesia (HA/LA lines; Jastrzebiec, Poland) or high and low levorphanol analgesia (HAR/LAR lines; Portland, OR). In the present study, mice from both programs were tested for both levorphanol analgesia (2 mg/kg) and an opioid-mediated swim stress-induced analgesia (3 min swimming in 32 degrees C water) in the hot-plate test. Mice selected for high and low levorphanol analgesia displayed high and low swim stress-induced analgesia, respectively; mice selected for high and low swim stress-induced analgesia displayed high and low levorphanol analgesia, respectively. This pattern of correlated responses suggests a high degree of common genetic determination in opiate and swim stress-induced analgesia. These findings also suggest that individual differences in analgesic responsiveness to opiate drugs result from genetically determined individual differences in endogenous pain inhibitory mechanisms.
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Affiliation(s)
- P Marek
- Department of Psychology, University of California, Los Angeles 90024
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Mogil JS, Marek P, Yirmiya R, Balian H, Sadowski B, Taylor AN, Liebeskind JC. Antagonism of the non-opioid component of ethanol-induced analgesia by the NMDA receptor antagonist MK-801. Brain Res 1993; 602:126-30. [PMID: 8448649 DOI: 10.1016/0006-8993(93)90251-h] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Recent evidence from our laboratory suggests that the N-methyl-D-aspartate (NMDA) receptor antagonist MK-801 (dizocilpine) selectively antagonizes non-opioid (i.e. naloxone-insensitive) mechanisms of stress-induced analgesia in mice. For example, we have recently demonstrated that a low dose of MK-801 (0.075 mg/kg, i.p.) antagonizes the non-opioid component of a mixed opioid/non-opioid swim stress-induced analgesia (SSIA) resulting from forced swimming for 3 min in 20 degrees C water. Since ethanol-induced analgesia (EIA) has been found to be only partially attenuated by naloxone, we hypothesized that MK-801 would similarly block the non-opioid component of EIA. The effects of MK-801 and of the opioid receptor antagonist naloxone (10 mg/kg, i.p.) on analgesia produced by ethanol (2.5 g/kg in 20% vol/vol, i.p.) were studied in control mice and in mice selectively bred for high (HA) or low (LA) SSIA. HA mice showed significantly more, and LA mice significantly less, EIA than controls. Naloxone and MK-801 significantly attenuated EIA in control and HA mice, and in these lines the combined administration of both antagonists blocked EIA completely. In LA mice, which displayed very little EIA, naloxone but not MK-801 reversed EIA completely. These findings provide additional evidence for the role of the NMDA receptor in non-opioid mechanisms of analgesia. The finding that mice selectively bred for high and low SSIA, also display high and low EIA suggests common mediation of the effects of stress and ethanol on antinociceptive processes.
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Affiliation(s)
- J S Mogil
- Department of Psychology, University of California, Los Angeles 90024
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Kamei J, Hitosugi H, Misawa M, Nagase H, Kasuya Y. Delta-opiod receptor-mediated forced swimming stress-induced antinociception in the formalin test. Psychopharmacology (Berl) 1993; 113:15-8. [PMID: 7862822 DOI: 10.1007/bf02244327] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Forced swimming stress-induced antinociception (FSSIA) was assessed using the formalin test. Male ICR mice, weighing about 30 g, were forced to swim in water at 20 degrees C for 3 min. In unstressed mice, SC injection of formalin (0.5%) to the hindpaw caused a biphasic response: an immediate nociceptive response (first phase) followed by a tonic response (second phase). Although forced swimming stress (FSS) had no effect on the duration of the first-phase response, FSS significantly reduced the duration of the second-phase response. The effect of FSSIA on the second-phase response was blocked by naltrindole (1 mg/kg, SC), a selective delta-opioid receptor antagonist, but not by beta-funaltrexamine (20 mg/kg, SC), a selective mu-opioid receptor antagonist. These results indicate that FSS may selectively reduce the second phase of the formalin-induced nociceptive response, primarily through delta-opioid receptors.
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Affiliation(s)
- J Kamei
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Hoshi University, Tokyo, Japan
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43
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Vaccarino AL, Marek P, Sternberg W, Liebeskind JC. NMDA receptor antagonist MK-801 blocks non-opioid stress-induced analgesia in the formalin test. Pain 1992; 50:119-123. [PMID: 1387468 DOI: 10.1016/0304-3959(92)90119-v] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The analgesic effect of a 3-min swim stress was assessed using the formalin test. Male Swiss mice were injected i.p. with naloxone (0.1 or 1.0 mg/kg), MK-801 (0.075 mg/kg) or saline 15 min prior to swimming in water maintained at 20 degrees C or 32 degrees C. The mice were then injected with 20 microliters of 5% formalin into the plantar surface of 1 hind paw and pain behaviour (time spent licking the injected paw) was continuously monitored during the subsequent 10 min. Swim stress produced a significant reduction in pain behaviour at both 20 degrees C and 32 degrees C. MK-801 completely blocked the analgesia produced by both the 20 degrees C and 32 degrees C swim. At a dose of 0.1 mg/kg, naloxone partially antagonized the analgesia produced by the 32 degrees C swim but did not affect the analgesia produced by the 20 degrees C swim. Naloxone at a dose of 1.0 mg/kg had no effect on swim stress-induced analgesia. Neither MK-801 nor 0.1 mg/kg naloxone altered baseline pain behaviour, although 1.0 mg/kg naloxone did significantly reduce it. It is unlikely that the effect of MK-801 on swim stress-induced analgesia is due to an interaction with an opioid mechanism, as MK-801 had no effect on morphine analgesia. These results suggest that the analgesia produced by the 20 degrees C swim stress in the formalin test is non-opioid in nature and mediated via the NMDA receptor, whereas the 32 degrees C swim stress-induced analgesia has both an opioid and non-opioid component.
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Affiliation(s)
- Anthony L Vaccarino
- Department of Psychology, University of California, Los Angeles, CA 90024 USA
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Abstract
The present studies were designed to determine whether streptozotocin-induced (STZ-induced) diabetes in mice can attenuate the development of antinociception induced by exposure to both foot shock and forced swimming stress. Foot shock stress produced significant analgesia both in control and diabetic mice. However, the extent of foot shock stress-induced analgesia (FSSIA) in diabetic mice was significantly lower than that in control mice. Naloxone (2 mg/kg, i.p.) significantly attenuated FSSIA in control mice, but was without effect on FSSIA in diabetic mice. One-minute swimming stress had no significant effect on tail-pinch latency in control mice, whereas 3-min swimming stress produced significant analgesia in these mice. Diabetic mice exhibited robust swimming stress-induced analgesia (SSIA): one-min swimming stress produced significant analgesia in diabetic mice. These analgesic effects were blocked by naltrindole, a selective antagonist of delta-opioid receptors, but not by pretreatment with beta-funaltrexamine, an irreversible and selective antagonist of mu-opioid receptors. These results suggest that the deficiency in the functioning of mu-opioid receptors caused by diabetes results in significant activation of an endogenous analgesic system, which is mediated mainly by delta-opioid receptors.
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Affiliation(s)
- J Kamei
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Hoshi University, Tokyo, Japan
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45
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Marek P, Mogil JS, Sternberg WF, Panocka I, Liebeskind JC. N-methyl-D-aspartic acid (NMDA) receptor antagonist MK-801 blocks non-opioid stress-induced analgesia. II. Comparison across three swim-stress paradigms in selectively bred mice. Brain Res 1992; 578:197-203. [PMID: 1387334 DOI: 10.1016/0006-8993(92)90248-8] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The effects of the specific N-methyl-D-aspartic acid (NMDA) receptor antagonist MK-801 (dizocilpine, 0.075 mg/kg, i.p.) on swim-stress-induced analgesia (SSIA) were studied in control (C) mice and in mice selectively bred for high (HA) or low (LA) SSIA. In three consecutive experiments, animals were subjected to forced swimming at water temperature of 20 degrees C, 32 degrees C and 15 degrees C and the resulting analgesia (hot-plate test) was found to be mixed opioid/non-opioid, opioid and non-opioid, respectively, as a function of the degree of antagonism by naloxone (10 mg/kg, i.p.). The major finding of this study is that MK-801 attenuated 15 degrees C SSIA, against which naloxone was ineffective, but had no effect on 32 degrees C SSIA, which naloxone blocked completely. A combination of naloxone and MK-801 significantly attenuated 20 degrees C SSIA in C and HA mice and in HA mice this attenuation was significantly larger than that produced by either drug alone. Morphine analgesia (10 mg/kg, i.p.) was unaffected by MK-801. It is concluded that low doses of MK-801 selectively block non-opioid mechanisms of SSIA.
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Affiliation(s)
- P Marek
- Department of Psychology, University of California, Los Angeles 90024-1563
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Panocka I, Marek P, Sadowski B. Tolerance and cross-tolerance with morphine in mice selectively bred for high and low stress-induced analgesia. Pharmacol Biochem Behav 1991; 40:283-6. [PMID: 1805231 DOI: 10.1016/0091-3057(91)90553-e] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Mice selectively bred for high (HA) and low (LA) swim-induced analgesia were exposed to two different stress paradigms; one consisting of a 3-min swim at 20 degrees C daily for 14 days, and the other consisting of 3-min swims repeated at 2-h intervals for 48 h. Both forms of chronic stress resulted in the development of tolerance to swim-induced antinociception to a greater degree in the HA mice than in control (C) mice, but were both ineffective at inducing tolerance in LA mice. Swimming repeated at 2-h intervals for 48 h resulted in cross-tolerance with morphine in HA and C mice. Naloxone (1 and 10 mg/kg, IP) failed to antagonize swim-induced analgesia in mice that had experienced chronic swimming in the 2-h/48-h paradigm. The daily swimming paradigm failed to produce cross-tolerance with morphine analgesia in any line. Differential degree of tolerance in three lines supports a hypothesis that selective breeding for high and low stress-induced analgesia has modified the degree of opioid involvement in the endogenous analgesia mechanisms.
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Affiliation(s)
- I Panocka
- Department of Behavioral Physiology, Polish Academy of Sciences, Mrokow
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Marek P, Page GG, Ben-Eliyahu S, Liebeskind JC. N-methyl-D-aspartic acid (NMDA) receptor antagonist MK-801 blocks non-opioid stress-induced analgesia. I. Comparison of opiate receptor-deficient and opiate receptor-rich strains of mice. Brain Res 1991; 551:293-6. [PMID: 1655162 DOI: 10.1016/0006-8993(91)90943-p] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The effects of the specific N-methyl-D-aspartic acid (NMDA) receptor antagonist MK-801 (0.075 mg/kg), and the specific opiate receptor antagonist naloxone (10 mg/kg), on swim stress-induced analgesia (SSIA) were studied in opiate receptor-deficient (CXBK) and opiate receptor-rich (CXBH) mice. Animals were subjected to forced swimming, and analgesia was assessed using the hot-plate test. In CXBK mice SSIA was blocked by MK-801 but was completely insensitive to naloxone. In CXBH mice SSIA was partially attenuated both by naloxone and MK-801, and it was nearly abolished by a combination of these drugs. Morphine analgesia (10 mg/kg) was abolished by naloxone but completely unaffected by MK-801 in CXBH mice. These findings suggest that the NMDA receptor is critically involved in the non-opioid component of SSIA.
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Affiliation(s)
- P Marek
- Department of Psychology, University of California, Los Angeles 90024
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Abstract
The effect of combined treatment with 125 mg/kg of D-phenylalanine plus 125 mg/kg of D-leucine (IP) on magnitude and duration of analgesia caused by 3 min swim at 20 degrees C was studied in mouse lines selectively bred for 20 generations toward high and low level of stress-induced analgesia. The D-amino acids administered 30 min prior to swimming increased postswim tail-flick latencies and prolonged antinociception more in the high analgesia line (HA) than in concomitantly bred unselected controls, but were not effective in the low analgesia line (LA). The potentiation of swim analgesia by D-amino acids was prevented by simultaneous administration of 1 mg/kg of naloxone hydrochloride which, given alone, antagonized the analgesia more in the HA line than in controls, but not in the LA line. The results are interpreted in terms of genetic differentiation of opioidergic transmission in the selectively bred mouse lines.
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Affiliation(s)
- I Panocka
- Department of Behavioral Physiology, Polish Academy of Sciences, Mroków
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Marek P, Yirmiya R, Liebeskind JC. Genetic influences on brain stimulation-produced analgesia in mice: II. Correlation with brain opiate receptor concentration. Brain Res 1990; 507:155-7. [PMID: 2154297 DOI: 10.1016/0006-8993(90)90536-k] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The analgesic effect of electrical stimulation of the periaqueductal gray matter (PAG) was studied in 4 strains of mice: C57BL/6By (C57), BALB/cBy (BALB), CXBH, and CXBK. These strains are known to have high (CXBH), low (CXBK), and intermediate (C57 and BALB) concentrations of brain opiate receptors. The current intensity required for stimulation-produced analgesia (SPA) did not differ among strains. Naloxone attenuated SPA in CXBH, C57 and BALB mice, but was ineffective in the opiate receptor deficient CXBK mice. The results suggest that genetic differences in opiate receptor density can influence the degree to which opioid mechanisms are involved in SPA from the PAG.
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Affiliation(s)
- P Marek
- Department of Behavioral Physiology, Polish Academy of Sciences, Mrokow
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Shuster L. Genetics of responses to drugs of abuse. THE INTERNATIONAL JOURNAL OF THE ADDICTIONS 1990; 25:57-79. [PMID: 2246084 DOI: 10.3109/10826089009067005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Genetic differences in drug metabolism, in the number of drug receptors in the brain, and in drug-seeking behavior may contribute to the variability of individual responses to drugs of abuse. Genetic models include inbred strains, mutants, sublines, and selectively bred mice and rats. They have been used to examine acute and chronic effects of narcotics, stimulants, and alcohol as well as drug-seeking behavior, withdrawal syndromes, and the stress-induced release of endogenous opioids. These genetic models should prove helpful in defining individual differences in susceptibility to addiction.
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Affiliation(s)
- L Shuster
- Tufts University School of Medicine, Boston, Massachusetts 02111
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