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Ruiz-Rubio S, Ortiz-Leal I, Torres MV, Somoano A, Sanchez-Quinteiro P. Do fossorial water voles have a functional vomeronasal organ? A histological and immunohistochemical study. Anat Rec (Hoboken) 2024; 307:2912-2932. [PMID: 38112130 DOI: 10.1002/ar.25374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/02/2023] [Accepted: 12/06/2023] [Indexed: 12/20/2023]
Abstract
The fossorial water vole, Arvicola scherman, is an herbivorous rodent that causes significant agricultural damages. The application of cairomones and alarm pheromones emerges as a promising sustainable method to improve its integrated management. These chemical signals would induce stress responses that could interfere with the species regular reproductive cycles and induce aversive reactions, steering them away from farmlands and meadows. However, there is a paucity of information regarding the water vole vomeronasal system, both in its morphological foundations and its functionality, making it imperative to understand the same for the application of chemical communication in pest control. This study fills the existing gaps in knowledge through a morphological and immunohistochemical analysis of the fossorial water vole vomeronasal organ. The study is primarily microscopic, employing two approaches: histological, using serial sections stained with various dyes (hematoxylin-eosin, Periodic acid-Schiff, Alcian blue, Nissl), and immunohistochemical, applying various markers that provide morphofunctional and structural information. These procedures have confirmed the presence of a functional vomeronasal system in fossorial water voles, characterized by a high degree of differentiation and a significant expression of cellular markers indicative of active chemical communication in this species.
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Affiliation(s)
- Sara Ruiz-Rubio
- Department of Anatomy, Animal Production and Clinical Veterinary Sciences, Faculty of Veterinary, University of Santiago de Compostela, Lugo, Spain
| | - Irene Ortiz-Leal
- Department of Anatomy, Animal Production and Clinical Veterinary Sciences, Faculty of Veterinary, University of Santiago de Compostela, Lugo, Spain
| | - Mateo V Torres
- Department of Anatomy, Animal Production and Clinical Veterinary Sciences, Faculty of Veterinary, University of Santiago de Compostela, Lugo, Spain
| | - Aitor Somoano
- Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Villaviciosa, Asturias, Spain
| | - Pablo Sanchez-Quinteiro
- Department of Anatomy, Animal Production and Clinical Veterinary Sciences, Faculty of Veterinary, University of Santiago de Compostela, Lugo, Spain
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Desnouveaux L, Poly B, Edmond M, Aphezberro C, Coulon D, Boutet F, Le Coz C, Fargeau F, Linard C, Caillol P, Duffaud AM, Servonnet A, Ferhani O, Trousselard M, Taudon N, Canini F, Claverie D. Steady electrocorticogram characteristics predict specific stress-induced behavioral phenotypes. Front Neurosci 2023; 17:1047848. [PMID: 37113159 PMCID: PMC10126346 DOI: 10.3389/fnins.2023.1047848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 03/06/2023] [Indexed: 04/29/2023] Open
Abstract
Introduction Depending on the individual, exposure to an intense stressor may, or may not, lead to a stress-induced pathology. Predicting the physiopathological evolution in an individual is therefore an important challenge, at least for prevention. In this context, we developed an ethological model of simulated predator exposure in rats: we call this the multisensorial stress model (MSS). We hypothesized that: (i) MSS exposure can induce stress-induced phenotypes, and (ii) an electrocorticogram (ECoG) recorded before stress exposure can predict phenotypes observed after stress. Methods Forty-five Sprague Dawley rats were equipped with ECoG telemetry and divided into two groups. The Stress group (n = 23) was exposed to an MSS that combined synthetic fox feces odor deposited on filter paper, synthetic blood odor, and 22 kHz rodent distress calls; the Sham group (n = 22) was not exposed to any sensorial stimulus. Fifteen days after initial exposure, the two groups were re-exposed to a context that included a filter paper soaked with water as a traumatic object (TO) reminder. During this re-exposure, freezing behavior and avoidance of the filter paper were measured. Results Three behaviors were observed in the Stress group: 39% developed a fear memory phenotype (freezing, avoidance, and hyperreactivity); 26% developed avoidance and anhedonia; and 35% made a full recovery. We also identified pre-stress ECoG biomarkers that accurately predicted cluster membership. Decreased chronic 24 h frontal Low θ relative power was associated with resilience; increased frontal Low θ relative power was associated with fear memory; and decreased parietal β2 frequency was associated with the avoidant-anhedonic phenotype. Discussion These predictive biomarkers open the way to preventive medicine for stress-induced diseases.
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Affiliation(s)
- Laura Desnouveaux
- Unité de Développements Analytiques et Bioanalyse, Département Plateformes et Recherche Technologique, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Betty Poly
- Unité de Neurophysiologie du Stress, Département Neurosciences & Contraintes Opérationnelles, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Mathilde Edmond
- Unité de Neurophysiologie du Stress, Département Neurosciences & Contraintes Opérationnelles, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Cathy Aphezberro
- Département Innovation Numérique et Intelligence Artificielle, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - David Coulon
- Département Innovation Numérique et Intelligence Artificielle, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Francis Boutet
- Département Innovation Numérique et Intelligence Artificielle, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Christine Le Coz
- Unité Analyses Biologiques, Département Plateformes et Recherche Technologique, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Francisca Fargeau
- Unité Analyses Biologiques, Département Plateformes et Recherche Technologique, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Cyril Linard
- Unité de Développements Analytiques et Bioanalyse, Département Plateformes et Recherche Technologique, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Pierre Caillol
- Unité de Développements Analytiques et Bioanalyse, Département Plateformes et Recherche Technologique, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Anaïs M. Duffaud
- Unité de Neurophysiologie du Stress, Département Neurosciences & Contraintes Opérationnelles, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Aurélie Servonnet
- Unité Analyses Biologiques, Département Plateformes et Recherche Technologique, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Ouamar Ferhani
- Département Innovation Numérique et Intelligence Artificielle, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Marion Trousselard
- Unité de Neurophysiologie du Stress, Département Neurosciences & Contraintes Opérationnelles, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
- APEMAC, EA 4360, Université de Lorraine, Nancy, France
- Ecole du Val de Grâce, Paris, France
- Réseau ABC des Psychotraumas, Montpellier, France
| | - Nicolas Taudon
- Unité de Développements Analytiques et Bioanalyse, Département Plateformes et Recherche Technologique, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
| | - Frédéric Canini
- Unité de Neurophysiologie du Stress, Département Neurosciences & Contraintes Opérationnelles, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
- Ecole du Val de Grâce, Paris, France
- Réseau ABC des Psychotraumas, Montpellier, France
| | - Damien Claverie
- Unité de Neurophysiologie du Stress, Département Neurosciences & Contraintes Opérationnelles, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
- Réseau ABC des Psychotraumas, Montpellier, France
- *Correspondence: Damien Claverie
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Hu J, Liu Y, Ma Y, Gao M, Wan N, Li L, Liu B, Wen D. Sweet foods dietary pattern enhances negative associations of perceived indoor air quality during pregnancy with postpartum depression. INDOOR AIR 2022; 32:e13124. [PMID: 36437672 DOI: 10.1111/ina.13124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/27/2022] [Accepted: 09/18/2022] [Indexed: 06/16/2023]
Abstract
Postpartum depression (PPD) is possibly caused by indoor air pollution and may be modified by maternal diet during pregnancy. Using the data from a prospective cohort study, we examined the interaction between indoor air quality and maternal dietary patterns on PPD development. A perceived indoor air quality (PIAQ) score was used to assess indoor air pollution. A higher PIAQ score indicated a worse indoor air quality. Women with higher PIAQ scores were at increased risk for PPD (tertile 3 vs. tertile 1, odds ratio [OR] = 2.12, 95% confidence interval [CI] = 1.37-3.29). Compared with a lower adherence to a "sweet foods pattern" (OR = 1.20, 95% CI = 0.66-2.18), a higher adherence to a "sweet foods pattern" enhanced the hazardous associations of the PIAQ on PPD (OR = 3.09, 95% CI = 1.81-5.27, adjusted p for interaction = 0.044). Higher adherence to a "whole grain-seafood pattern" and lower adherence to a "traditional pattern" also increased the risk for PPD, although the p values for the interaction were not significant. Our findings provide further evidence of the link between diet during pregnancy, air pollution, and PPD, and it can be used to develop PPD prevention strategies.
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Affiliation(s)
- Jiajin Hu
- Health Sciences Institute, China Medical University, Shenyang, China
- Research Center of China Medical University Birth Cohort, China Medical University, Shenyang, China
| | - Yilin Liu
- Health Sciences Institute, China Medical University, Shenyang, China
- Research Center of China Medical University Birth Cohort, China Medical University, Shenyang, China
| | - Yanan Ma
- Department of Epidemiology and Health Statistics, School of Public Health, China Medical University, Shenyang, China
| | - Ming Gao
- Health Sciences Institute, China Medical University, Shenyang, China
- Research Center of China Medical University Birth Cohort, China Medical University, Shenyang, China
| | - Ningyu Wan
- Health Sciences Institute, China Medical University, Shenyang, China
- Research Center of China Medical University Birth Cohort, China Medical University, Shenyang, China
| | - Lin Li
- Health Sciences Institute, China Medical University, Shenyang, China
- Research Center of China Medical University Birth Cohort, China Medical University, Shenyang, China
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Borui Liu
- Health Sciences Institute, China Medical University, Shenyang, China
- Research Center of China Medical University Birth Cohort, China Medical University, Shenyang, China
| | - Deliang Wen
- Health Sciences Institute, China Medical University, Shenyang, China
- Research Center of China Medical University Birth Cohort, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Obesity and Glucose, Lipid Associated Metabolic Diseases, Shenyang, China
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Endogenous Estrogen Influences Predator Odor-Induced Impairment of Cognitive and Social Behaviors in Aromatase Gene Deficiency Mice. Behav Neurol 2021; 2021:5346507. [PMID: 34594430 PMCID: PMC8478571 DOI: 10.1155/2021/5346507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 08/28/2021] [Indexed: 11/17/2022] Open
Abstract
Epidemiological studies have suggested that traumatic stress increases vulnerability to various mental disorders, such as dementia and psychiatric disorders. While women are more vulnerable than men to depression and anxiety, it is unclear whether endogenous estrogens are responsible for the underlying sex-specific mechanisms. In this study, the aromatase gene heterozygous (Ar+/-) mice were used as an endogenous estrogen deficiency model and age- and sex-matched wild type mice (WT) as controls to study the predator odor 2,3,5-trimethyl-3-thiazoline- (TMT-) induced short- and long-term cognitive and social behavior impairments. In addition, the changes in brain regional neurotransmitters and their associations with TMT-induced changes in behaviors were further investigated in these animals. Our results showed TMT induced immediate fear response in both Ar+/- and WT mice regardless of sexes. TMT induced an acute impairment of novel object recognition memory and long-term social behavior impairment in WT mice, particularly in females, while Ar+/- mice showed impaired novel object recognition in both sexes and TMT-elevated social behaviors, particularly in males. TMT failed to induce changes in the prepulse inhibition (PPI) test in both groups. TMT resulted in a slight increase of DOPAC/DA ratio in the cortex and a significant elevation of this ratio in the striatum of WT mice. In addition, the ratio of HIAA/5-HT was significantly elevated in the cortex of TMT-treated WT mice, which was not found in TMT-treated Ar+/- mice. Taken together, our results indicate that TMT exposure can cause cognitive and social behavior impairments as well as change catecholamine metabolism in WT mice, and endogenous estrogen deficiency might desensitize the behavioral and neurochemical responses to TMT in Ar+/- mice.
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Adduci LB, León VA, Schlötelburg A, Busch M, Fraschina J. Avoidance behaviour in laboratory house mice (Musmusculus) and Norway rats (Rattus norvegicus) towards predator odours. PLoS One 2021; 16:e0245441. [PMID: 33471855 PMCID: PMC7817039 DOI: 10.1371/journal.pone.0245441] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 12/31/2020] [Indexed: 11/18/2022] Open
Abstract
Mus musculus and Rattus sp. are considered pest species because they reach high densities in urban areas, crop fields and food storage and productive systems such as breeding farms and orchards. Their control relies mainly on rodenticide application, but the effectiveness of this application is reduced due to behavioural responses and resistance. Novel methods are based on the use of chemical signals as odours that may be attractants, repellents or may reduce the reproductive success of pest species. The aim of this paper is to study the aversive effect of TMT, cat urine and cat body odour on predator-inexperienced Mus musculus and Rattus norvegicus under laboratory conditions. The experimental apparatus comprised three boxes connected by PVC pipes in a linear arrangement. In lateral boxes, odour sources or distilled water were introduced, while animals were placed in the central box at the beginning of the experiment. Rats showed freezing behaviour, reduced visits in the presence of TMT and cat fur. Mice reduced their visits with cat body and cat urine. This study provides evidence of the usefulness of using fear responses as a way to control rodent pests, which must be adapted to the environment and species to be applied.
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Affiliation(s)
- Luciana B. Adduci
- Facultad de Ciencias Exactas y Naturales, Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires and Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), UBA-CONICET, Universidad de Buenos Aires, Intendente Güiraldes 2160—Ciudad Universitaria—C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Vanina A. León
- Facultad de Ciencias Exactas y Naturales, Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires and Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), UBA-CONICET, Universidad de Buenos Aires, Intendente Güiraldes 2160—Ciudad Universitaria—C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Annika Schlötelburg
- Division of Land Use Systems, Humboldt-University of Berlin, Faculty of Life Science, Institute of Agriculture and Horticulture, Albrecht-Thaer-Weg, Berlin, Germany
| | - María Busch
- Facultad de Ciencias Exactas y Naturales, Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires and Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), UBA-CONICET, Universidad de Buenos Aires, Intendente Güiraldes 2160—Ciudad Universitaria—C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Jimena Fraschina
- Facultad de Ciencias Exactas y Naturales, Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires and Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), UBA-CONICET, Universidad de Buenos Aires, Intendente Güiraldes 2160—Ciudad Universitaria—C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
- * E-mail:
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6
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Delfino-Pereira P, Bertti-Dutra P, Del Vecchio F, de Oliveira JAC, Medeiros DDC, Cestari DM, Santos VR, Moraes MFD, Rosa JLG, Mendes EMAM, Garcia-Cairasco N. Behavioral and EEGraphic Characterization of the Anticonvulsant Effects of the Predator Odor (TMT) in the Amygdala Rapid Kindling, a Model of Temporal Lobe Epilepsy. Front Neurol 2020; 11:586724. [PMID: 33250852 PMCID: PMC7674931 DOI: 10.3389/fneur.2020.586724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/02/2020] [Indexed: 12/04/2022] Open
Abstract
Background: Clinical and experimental evidence indicates that olfactory stimulation modulates limbic seizures, either blocking or inducing ictal activity. Objective: We aim to evaluate the behavioral and electroencephalographic (EEGraphic) effects of dihydro-2,4,5-trimethylthiazoline (TMT) olfactory exposure on limbic seizures induced by amygdala rapid kindling (ARK). Materials and Methods: Wistar male rats (280–300 g) underwent stereotaxic surgery for electrode implantation in piriform cortex (PC), hippocampal formation (HIP), and amygdaloid complex (AMYG). Part of the animals was exposed to a saturated chamber with water or TMT, while others had ARK and olfactory exposure prior to the 21st stimulus. Behavioral responses were measured by traditional seizure severity scales (Racine and Pinel and Rovner) and/or by sequential analysis/neuroethology. The electrographic activity of epileptogenic limbic networks was quantified by the occurrence of the first and second EEG afterdischarges, comparing the 1st and 21st stimulus. The spectral analysis [Fast Fourier Transform (FFT)] of the first afterdischarge was performed at the 21st stimulus. Results: TMT olfactory exposure reduced the seizure severity in kindled rats, altering the displayed behavioral sequence. Moreover, TMT decreased the occurrence of first and second afterdischarges, at the 21st stimulus, and altered the spectral features. Conclusions: Both behavioral and EEGraphic evaluations indicated that TMT, a potent molecule with strong biological relevance, in fact, “predator odor,” suppressed the epileptiform activity in limbic networks.
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Affiliation(s)
- Polianna Delfino-Pereira
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, Brazil.,Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Poliana Bertti-Dutra
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, Brazil.,Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Flávio Del Vecchio
- Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - José A Cortes de Oliveira
- Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Daniel de Castro Medeiros
- Department of Physiology and Biophysics, Institute of Biological Science Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil.,Electrical Engineering Graduate Program, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Daniel M Cestari
- Department of Computer Science, Institute of Mathematics and Computer Sciences, University of São Paulo, São Carlos, Brazil
| | - Victor R Santos
- Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil.,Department of Morphology, Institute of Biological Science Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Marcio F D Moraes
- Department of Physiology and Biophysics, Institute of Biological Science Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - João L G Rosa
- Department of Computer Science, Institute of Mathematics and Computer Sciences, University of São Paulo, São Carlos, Brazil
| | - Eduardo M A M Mendes
- Electrical Engineering Graduate Program, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Norberto Garcia-Cairasco
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, Brazil.,Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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7
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Delfino-Pereira P, Berti Dutra P, Cortes de Oliveira JA, Casanova Turatti IC, Fernandes A, Peporine Lopes N, Garcia-Cairasco N. Are Predator Smell (TMT)-Induced Behavioral Alterations in Rats Able to Inhibit Seizures? Chem Senses 2020; 45:347-357. [DOI: 10.1093/chemse/bjaa023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Abstract
We aimed to evaluate the chemical and behavioral effects of 2,5-dihydro-2,4,5-trimethylthiazoline (TMT) after olfactory exposure and to verify their influence in the expression of acute audiogenic seizures in the Wistar Audiogenic Rat (WAR) strain. PROTOCOL 1: TMT gas chromatography was applied to define odor saturation in a chamber to different concentrations, time required for saturation and desaturation, and if saturation was homogeneous. Also, male Adult Wistar rats were exposed to saline (SAL) or to different TMT concentrations and their behaviors were evaluated (neuroethology). PROTOCOL 2: Male adult WARs were exposed for 15 s to SAL or TMT, followed by sound stimulation for 1 min or until tonic–clonic convulsion. Behavioral analysis included latencies (wild running and tonic–clonic convulsion), seizure severity indexes, and neuroethology. Gas chromatography established a saturation homogeneous to different concentrations of TMT, indicating that saturation and desaturation occurred in 30 min. TMT triggered fear-like or aversion-like reactions associated with reduction in motor activity and in grooming behavior, in the 2 highest concentrations. Pure TMT presented anticonvulsant properties, such as less-severe seizure phenotype, as well as a decrease in tonic–clonic convulsion expression. TMT elicited fear-like or aversion-like behaviors in Wistar and WAR and can be utilized in a quantifiable and controllable way. Our results suggested possible antagonism between “fear-related” or “aversion-related” and “seizure-related” networks.
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Affiliation(s)
- Polianna Delfino-Pereira
- Neurosciences and Behavioral Sciences Departament, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Poliana Berti Dutra
- Neurosciences and Behavioral Sciences Departament, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Physiology Departament, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | | | - Izabel Cristina Casanova Turatti
- Physics and Chemistry Departament, Ribeirão Preto School of Pharmaceutical Sciences, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Artur Fernandes
- Physiology Departament, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Norberto Peporine Lopes
- Physics and Chemistry Departament, Ribeirão Preto School of Pharmaceutical Sciences, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Norberto Garcia-Cairasco
- Neurosciences and Behavioral Sciences Departament, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Physiology Departament, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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8
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β-eudesmol, an oxygenized sesquiterpene, affects efferent adrenal sympathetic nerve activity via transient receptor potential ankyrin 1 in rats. Neurosci Lett 2018; 684:18-24. [DOI: 10.1016/j.neulet.2018.06.057] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/12/2018] [Accepted: 06/29/2018] [Indexed: 11/23/2022]
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9
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Tazumi S, Omoto S, Nagatomo Y, Kawahara M, Yokota-Nakagi N, Kawakami M, Takamata A, Morimoto K. Estrogen replacement attenuates stress-induced pressor responses through vasorelaxation via β 2-adrenoceptors in peripheral arteries of ovariectomized rats. Am J Physiol Heart Circ Physiol 2017; 314:H213-H223. [PMID: 29030338 DOI: 10.1152/ajpheart.00148.2017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We examined whether chronic estrogen replacement has an inhibitory effect on stress-induced pressor responses via activation of β2-adrenoceptor (AR) in peripheral arteries of ovariectomized rats. Female Wistar rats aged 9 wk were ovariectomized. After 4 wk, pellets containing either 17β-estradiol (E2) or placebo (Pla) were subcutaneously implanted into the rats. After 4 wk of treatment, rats underwent cage-switch stress, and, in a separate experiment, a subset received an infusion of isoproterenol (ISO) with or without pretreatment with the β1-AR blocker atenolol or the β2-AR blocker butoxamine. In addition, the isolated mesenteric artery was used to assess the concentration-related relaxing responses to ISO and the β1- or β2-AR mRNA level. The cage-switch stress-induced pressor response was significantly attenuated in the E2-treated group compared with the Pla-treated group. Pretreatment with atenolol reduced blood pressure responses in both groups. However, butoxamine enhanced the pressor response only in the E2-treated group, resulting in no difference between the two groups. In addition, the intravenous ISO-induced depressor response was significantly enhanced in the E2-treated group compared with the Pla-treated group. Furthermore, the difference in the depressor response was abolished by pretreatment with butoxamine but not by atenolol. In the isolated mesenteric artery, butoxamine caused a rightward shift in ISO-induced concentration-related relaxation in the E2-treated group. The β2-AR mRNA level in the mesenteric artery was higher in the E2-treated group than in the Pla-treated group. These results suggest that estrogen replacement attenuated the stress-induced pressor response probably by suppressing vasoconstriction via activation of β2-ARs in peripheral arteries of ovariectomized rats. NEW & NOTEWORTHY In this study, we show, for the first time, that estrogen replacement has an inhibitory effect on the psychological stress-induced pressor response through vasorelaxation via β2-adrenoceptors, probably due to overexpression of β2-adrenoceptor mRNA, in peripheral arteries of ovariectomized rats.
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Affiliation(s)
- Shoko Tazumi
- Department of Environmental Health, Faculty of Life Science and Human Technology, Nara Women's University , Nara , Japan
| | - Sayo Omoto
- Department of Environmental Health, Faculty of Life Science and Human Technology, Nara Women's University , Nara , Japan
| | - Yu Nagatomo
- Department of Environmental Health, Faculty of Life Science and Human Technology, Nara Women's University , Nara , Japan
| | - Mariko Kawahara
- Department of Environmental Health, Faculty of Life Science and Human Technology, Nara Women's University , Nara , Japan
| | - Naoko Yokota-Nakagi
- Department of Environmental Health, Faculty of Life Science and Human Technology, Nara Women's University , Nara , Japan
| | - Mizuho Kawakami
- Department of Environmental Health, Faculty of Life Science and Human Technology, Nara Women's University , Nara , Japan
| | - Akira Takamata
- Department of Environmental Health, Faculty of Life Science and Human Technology, Nara Women's University , Nara , Japan
| | - Keiko Morimoto
- Department of Environmental Health, Faculty of Life Science and Human Technology, Nara Women's University , Nara , Japan
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Brechbühl J, Moine F, Tosato MN, Sporkert F, Broillet MC. Identification of pyridine analogs as new predator-derived kairomones. Front Neurosci 2015; 9:253. [PMID: 26283896 PMCID: PMC4517376 DOI: 10.3389/fnins.2015.00253] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 07/09/2015] [Indexed: 12/29/2022] Open
Abstract
In the wild, animals have developed survival strategies relying on their senses. The individual ability to identify threatening situations is crucial and leads to increase in the overall fitness of the species. Rodents, for example have developed in their nasal cavities specialized olfactory neurons implicated in the detection of volatile cues encoding for impending danger such as predator scents or alarm pheromones. In particular, the neurons of the Grueneberg ganglion (GG), an olfactory subsystem, are implicated in the detection of danger cues sharing a similar chemical signature, a heterocyclic sulfur- or nitrogen-containing motif. Here we used a “from the wild to the lab” approach to identify new molecules that are involuntarily emitted by predators and that initiate fear-related responses in the recipient animal, the putative prey. We collected urines from carnivores as sources of predator scents and first verified their impact on the blood pressure of the mice. With this approach, the urine of the mountain lion emerged as the most potent source of chemical stress. We then identified in this biological fluid, new volatile cues with characteristic GG-related fingerprints, in particular the methylated pyridine structures, 2,4-lutidine and its analogs. We finally verified their encoded danger quality and demonstrated their ability to mimic the effects of the predator urine on GG neurons, on mice blood pressure and in behavioral experiments. In summary, we were able to identify here, with the use of an integrative approach, new relevant molecules, the pyridine analogs, implicated in interspecies danger communication.
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Affiliation(s)
- Julien Brechbühl
- Department of Pharmacology and Toxicology, Faculty of Biology and Medicine, University of Lausanne Lausanne, Switzerland
| | - Fabian Moine
- Department of Pharmacology and Toxicology, Faculty of Biology and Medicine, University of Lausanne Lausanne, Switzerland
| | - Monique Nenniger Tosato
- Department of Pharmacology and Toxicology, Faculty of Biology and Medicine, University of Lausanne Lausanne, Switzerland
| | - Frank Sporkert
- University Center of Legal Medicine, Lausanne-Geneva Lausanne, Switzerland
| | - Marie-Christine Broillet
- Department of Pharmacology and Toxicology, Faculty of Biology and Medicine, University of Lausanne Lausanne, Switzerland
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Takahashi LK. Olfactory systems and neural circuits that modulate predator odor fear. Front Behav Neurosci 2014; 8:72. [PMID: 24653685 PMCID: PMC3949219 DOI: 10.3389/fnbeh.2014.00072] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 02/20/2014] [Indexed: 11/13/2022] Open
Abstract
When prey animals detect the odor of a predator a constellation of fear-related autonomic, endocrine, and behavioral responses rapidly occur to facilitate survival. How olfactory sensory systems process predator odor and channel that information to specific brain circuits is a fundamental issue that is not clearly understood. However, research in the last 15 years has begun to identify some of the essential features of the sensory detection systems and brain structures that underlie predator odor fear. For instance, the main (MOS) and accessory olfactory systems (AOS) detect predator odors and different types of predator odors are sensed by specific receptors located in either the MOS or AOS. However, complex predator chemosignals may be processed by both the MOS and AOS, which complicate our understanding of the specific neural circuits connected directly and indirectly from the MOS and AOS to activate the physiological and behavioral components of unconditioned and conditioned fear. Studies indicate that brain structures including the dorsal periaqueductal gray (DPAG), paraventricular nucleus (PVN) of the hypothalamus, and the medial amygdala (MeA) appear to be broadly involved in predator odor induced autonomic activity and hypothalamic-pituitary-adrenal (HPA) stress hormone secretion. The MeA also plays a key role in predator odor unconditioned fear behavior and retrieval of contextual fear memory associated with prior predator odor experiences. Other neural structures including the bed nucleus of the stria terminalis and the ventral hippocampus (VHC) appear prominently involved in predator odor fear behavior. The basolateral amygdala (BLA), medial hypothalamic nuclei, and medial prefrontal cortex (mPFC) are also activated by some but not all predator odors. Future research that characterizes how distinct predator odors are uniquely processed in olfactory systems and neural circuits will provide significant insights into the differences of how diverse predator odors activate fear.
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Affiliation(s)
- Lorey K Takahashi
- Department of Psychology, University of Hawaii at Manoa Honolulu, HI, USA
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Horii Y, Nagai K, Nakashima T. Order of exposure to pleasant and unpleasant odors affects autonomic nervous system response. Behav Brain Res 2013; 243:109-17. [PMID: 23318462 DOI: 10.1016/j.bbr.2012.12.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 12/20/2012] [Accepted: 12/24/2012] [Indexed: 12/22/2022]
Abstract
When mammals are exposed to an odor, that odor is expected to elicit a physiological response in the autonomic nervous system. An unpleasant aversive odor causes non-invasive stress, while a pleasant odor promotes healing and relaxation in mammals. We hypothesized that pleasant odors might reduce a stress response previously induced by an aversive predator odor. Rats were thus exposed to pleasant and unpleasant odors in different orders to determine whether the order of odor exposure had an effect on the physiological response in the autonomic nervous system. The first trial examined autonomic nerve activity via sympathetic and parasympathetic nerve response while the second trial examined body temperature response. Initial exposure to a pleasant odor elicited a positive response and secondary exposure to an unpleasant odor elicited a negative response, as expected. However, we found that while initial exposure to an unpleasant odor elicited a negative stress response, subsequent secondary exposure to a pleasant odor not only did not alleviate that negative response, but actually amplified it. These findings were consistent for both the autonomic nerve activity response trial and the body temperature response trial. The trial results suggest that exposure to specific odors does not necessarily result in the expected physiological response and that the specific order of exposure plays an important role. Our study should provide new insights into our understanding of the physiological response in the autonomic nervous system related to odor memory and discrimination and point to areas that require further research.
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Affiliation(s)
- Yuko Horii
- Kyoto Institute of Technology, Matsugasaki, Sakyo-Ku, Kyoto 606-8585, Japan.
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Nikaido Y, Miyata S, Nakashima T. Mixture of cis-3-hexenol and trans-2-hexenal attenuates behavioral and stress responses induced by 2,5-dihydro-2,4,5-trimethylthiazoline and electric footshock stress in rats. Physiol Behav 2011; 103:547-56. [DOI: 10.1016/j.physbeh.2011.04.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Revised: 04/08/2011] [Accepted: 04/11/2011] [Indexed: 10/18/2022]
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Species-relevant inescapable stress differently influences memory consolidation and retrieval of mice in a spatial radial arm maze. Behav Brain Res 2011; 219:142-8. [DOI: 10.1016/j.bbr.2010.12.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Revised: 12/22/2010] [Accepted: 12/27/2010] [Indexed: 11/18/2022]
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Nikaido Y, Nakashima T. Different patterns of neuronal activities in the infralimbic and prelimbic cortices and behavioral expression in response to two affective odors, 2,5-dihydro-2,4,5-trimethylthiazoline and a mixture of cis-3-hexenol and trans-2-hexenal, in the freely moving rat. Behav Brain Res 2010; 218:218-27. [PMID: 21147176 DOI: 10.1016/j.bbr.2010.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 11/30/2010] [Accepted: 12/05/2010] [Indexed: 02/05/2023]
Abstract
The medial prefrontal cortex (mPFC) is involved in stimulus perception, attentional control, emotional behavior, and the stress response. These functions are thought to be mediated by the infralimbic (IL) and prelimbic (PL) subregions of mPFC; however, few studies have examined the roles of IL and PL cortices in olfactory cognition. In the present study, we investigated the acute effects of two odors, 2,5-dihydro-2,4,5-trimethylthiazoline (TMT) and a mixture of cis-3-hexenol and trans-2-hexenal (green odor: GO), on behavioral responses and IL and PL neuronal activities using extracellular single-unit recordings in a freely moving rat. We found that the total number of spike firings in IL and PL neurons did not change with 10s presentation of odors. TMT presentation induced significant changes in burst firing activity in IL and PL neurons, while GO presentation induced changes in burst firing only in IL neurons. In the temporal profile of the firing activity of IL neurons, TMT exposure induced transient activation and GO exposure induced sustained activation. Those of PL neurons showed sustained activation during TMT exposure and transient activations during GO exposure. GO exposure induced a stretch-attend posture, whereas TMT exposure induced immobility. Furthermore, multiple regression analysis indicated that the property of the odor and neuronal activities of IL and PL regions were correlated with behavioral responses. These findings reveal that olfaction-related neurons exist in IL and PL regions, and that the neurons in these regions might temporarily encode odor information in order to modulate motor outputs by tuning firing properties in the early stage of cognition according to the odor property.
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Affiliation(s)
- Y Nikaido
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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