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Abstract
Post-traumatic stress disorder (PTSD) is a debilitating psychiatric condition with a wide range of behavioral disturbances and serious consequences for both patient and society. One of the main reasons for unsuccessful therapies is insufficient knowledge about its underlying pathomechanism. In the search for centrally signaling molecules that might be relevant to the development of PTSD we focus here on arginine vasopressin (AVP). So far AVP has not been strongly implicated in PTSD, but different lines of evidence suggest a possible impact of its signaling in all clusters of PTSD symptomatology. More specifically, in laboratory rodents, AVP agonists affect behavior in a PTSD-like manner, while significant reduction of AVP signaling in the brain e.g. in AVP-deficient Brattleboro rats, ameliorated defined behavioral parameters that can be linked to PTSD symptoms. Different animal models of PTSD also show alterations in the AVP signaling in distinct brain areas. However, pharmacological treatment targeting central AVP receptors via systemic routes is hampered by possible side effects that are linked to the peripheral action of AVP as a hormone. Indeed, the V1a receptor, the most common receptor subtype in the brain, is implicated in vasoconstriction. Thus, systemic treatment with V1a receptor antagonists would be implicated in hypotonia. This implies that novel treatment concepts are needed to target AVP receptors not only at brain level but also in distinct brain areas, to offer alternative treatments for PTSD.
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Affiliation(s)
- Eszter Sipos
- Behavioral Neurobiology, Institute of Experimental Medicine, Budapest, Hungary
| | - Bibiána Török
- Behavioral Neurobiology, Institute of Experimental Medicine, Budapest, Hungary
- Janos Szentagothai School of Neurosciences, Semmelweis University, Budapest, Hungary
| | - István Barna
- Behavioral Neurobiology, Institute of Experimental Medicine, Budapest, Hungary
| | - Mario Engelmann
- Institut für Biochemie und Zellbiologie, Otto-von-Guericke-Universität, Magdeburg, Germany
- Center for Behavioural Brain Sciences (CBBS), Magdeburg, Germany
| | - Dóra Zelena
- Behavioral Neurobiology, Institute of Experimental Medicine, Budapest, Hungary
- Centre for Neuroscience, Szentágothai Research Centre, Institute of Physiology, Medical School, University of Pécs, Pécs, Hungary
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Kadhim HJ, Kidd M, Kang SW, Kuenzel WJ. Differential delayed responses of arginine vasotocin and its receptors in septo-hypothalamic brain structures and anterior pituitary that sustain hypothalamic-pituitary-adrenal (HPA) axis functions during acute stress. Gen Comp Endocrinol 2020; 286:113302. [PMID: 31622604 DOI: 10.1016/j.ygcen.2019.113302] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 10/11/2019] [Accepted: 10/13/2019] [Indexed: 10/25/2022]
Abstract
Recently, we proposed that corticotropin releasing hormone (CRH) neurons in the nucleus of hippocampal commissure (NHpC), located in the septum, function as a part of the traditional hypothalamic-pituitary-adrenal (HPA) axis in avian species. CRH and its receptor, CRHR1, are regulated differently in the NHpC compared to the paraventricular nucleus (PVN) following feed deprivation (FD). Therefore, we followed up our work by examining arginine vasotocin (AVT), the other major ACTH secretagogue, and its receptors, V1aR and V1bR, gene expression during FD stress in the NHpC, PVN, and ventral mediobasal hypothalamus/median eminence (MBHv/ME). The objectives were to 1) identify AVT perikarya, fibers and its two major receptors, V1aR and V1bR, in the NHpC, PVN, and MBHv/ME using immunohistochemistry, 2) determine the effect of stress on AVT, V1aR and V1bR mRNA expression in the same three brain structures, NHpC, PVN, and MBHv/ME; and, 3) ascertain the expression pattern of V1aR and V1bR mRNA in the anterior pituitary and measure plasma stress hormone, corticosterone (CORT), concentration following FD stress. Male chicks (Cobb 500), 14 days of age, were divided into six groups (10 birds/treatment) and subjected to different times of FD stress: (Control, 1 h, 2 h, 3 h, 4 h, and 8 h). For each bird, blood, brain, and anterior pituitary were sampled and frozen immediately. The NHpC, PVN, and MBHv/ME were micro-dissected for RT-PCR. Data were analyzed using one-way ANOVA followed by Tukey Kramer HSD test using a significance level of p < 0.05. Perikarya of AVT neurons were identified in the PVN but not in the NHpC nor MBHv/ME, and only V1aR-immunoreactivity (ir) was observed in the three structures, however, gene expression data for AVT and its two receptors were obtained in all structures. Both AVT and V1aR mRNA are expressed and increased significantly in the PVN following FD stress (p < 0.01). For the first time, V1bR mRNA was documented in the avian brain and specifically shown upregulated in the NHpC and PVN (p < 0.01) following stress. Additionally, delayed significant gene expression of AVT and its receptors in the PVN showed a positive feedback relationship responsible for maintaining CORT release. In contrast, a significant downregulation of AVT mRNA and upregulation of V1aR mRNA occurred in the NHpC (p < 0.01) during FD showing a negative feedback relationship between AVT and its receptors, V1aR and V1bR. Within the MBHv/ME and anterior pituitary, a gradual increase of AVT mRNA in PVN as well as MBHv/ME was associated with significant upregulation of V1bR (p < 0. 01) and downregulation of V1aR (p < 0.01) in both MBHv/ME and anterior pituitary indicating AVT regulates its receptors differentially to sustain CORT release and control overstimulation of the anterior pituitary during a stress response.
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Affiliation(s)
- Hakeem J Kadhim
- Center of Excellence in Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - Michael Kidd
- Center of Excellence in Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - Seong W Kang
- Center of Excellence in Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - Wayne J Kuenzel
- Center of Excellence in Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA.
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van der Kolk JH, Fouché N, Gross JJ, Gerber V, Bruckmaier RM. A comparison between the equine and bovine hypothalamus-pituitary-adrenocortical axis. Domest Anim Endocrinol 2016; 56 Suppl:S101-11. [PMID: 27345307 DOI: 10.1016/j.domaniend.2016.02.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 02/18/2016] [Accepted: 02/22/2016] [Indexed: 01/02/2023]
Abstract
In this review, we address the function of the hypothalamus-pituitary-adrenocortical (HPA) axis with special emphasis on the comparison between the bovine and equine species. The pars intermedia of the pituitary gland is particularly well developed in horses and cattle. However, its function is not well appreciated in cattle yet. The Wulzen's cone of the adenohypophysis is a special feature of ruminants. Total basal cortisol concentration is much higher in horses than that in cows with similar free cortisol fractions. Corticotropin-releasing factor (CRF) concentrations in equine pituitary venous blood are lower compared with other species, whereas plasma ACTH concentrations in cows are higher than those in horses. A CRF challenge test induced a more pronounced cortisol response in horses compared with cattle, whereas regarding ACTH challenge testing, the opposite seems true. Based on data from literature, the bovine species is characterized by relatively high basal blood CRF and ACTH and low cortisol and glucose concentrations. Obviously, further lowering of blood cortisol in cattle is easily prevented by the high sensitivity to ACTH, and as a consequence, subsequent increased gluconeogenesis prevents imminent hypoglycemia. Hypoglycemia is less likely in horses given their high muscle glycogen content and their relatively high cortisol concentration. When assessing HPA axis reactivity, response patterns to exogenous ACTH or CRH might be used as a reliable indicator of animal welfare status in cows and horses, respectively, although it is emphasized that considerable caution should be exercised in using measures of HPA activity solely to assess animal welfare.
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Affiliation(s)
- J H van der Kolk
- Department of Clinical Veterinary Medicine, Swiss Institute for Equine Medicine (ISME), Vetsuisse Faculty, University of Bern and Agroscope, Bern 3012, Switzerland.
| | - N Fouché
- Department of Clinical Veterinary Medicine, Swiss Institute for Equine Medicine (ISME), Vetsuisse Faculty, University of Bern and Agroscope, Bern 3012, Switzerland
| | - J J Gross
- Veterinary Physiology, Vetsuisse Faculty, University of Bern, Bern 3012, Switzerland
| | - V Gerber
- Department of Clinical Veterinary Medicine, Swiss Institute for Equine Medicine (ISME), Vetsuisse Faculty, University of Bern and Agroscope, Bern 3012, Switzerland
| | - R M Bruckmaier
- Veterinary Physiology, Vetsuisse Faculty, University of Bern, Bern 3012, Switzerland
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Kelly AK, Earley B, McGee M, Fahey AG, Kenny DA. Endocrine and hematological responses of beef heifers divergently ranked for residual feed intake following a bovine corticotropin-releasing hormone challenge. J Anim Sci 2016; 94:1703-11. [DOI: 10.2527/jas.2015-9935] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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An XL, Tai FD. AVP and Glu systems interact to regulate levels of anxiety in BALB/cJ mice. DONG WU XUE YAN JIU = ZOOLOGICAL RESEARCH 2014; 35:319-25. [PMID: 25017752 DOI: 10.13918/j.issn.2095-8137.2014.4.319] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Whilethe roles of glutamic acid (Glu), arginine vasopressin (AVP) and their respective receptors in anxiety have been thoroughly investigated, the effects of interactions among Glu, N-methyl-D-aspartic acid (NMDA) receptor, AVP and a-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) receptor on anxiety are still unclear. In the present study, the agonist and antagonist of the NMDA receptor and AMPA receptor, as well as the antagonist of AVP V1 receptor (V1aR) were introduced into BALB/cJ mice by intracerebroventricular microinjection, and the anxiety-like behaviors of the mice were evaluated by open field and elevated plus-maze tests. Compared with C57BL/6 mice, BALB/cJ mice displayed higher levels of anxiety-like behavior. Significant anxiolytic effects were found in the NMDA receptor antagonist (MK-801) and the AMPA receptor or V1aR antagonist (SSRI49415), as well as combinations of AVP/MK-801 and SSRI49415/DNQX. These results indicated that anxiety-like behaviors expressed in BALB/CJ mice may be due to a coordination disorder among glutamate, NMDA receptor, AMPA receptor, AVP and V1aR, resulting in the up-regulation of the NMDA receptor and V1aR and down-regulation of the AMPA receptor. However, because the AMPA receptor can execute its anxiolytic function by suppressing AVP and V1aR, we cannot exclude the possibility of the NMDA receptor being activated by AVP acting on V1aR.
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Affiliation(s)
- Xiao-Lei An
- College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Fa-Dao Tai
- College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China.
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Nagarajan G, Tessaro BA, Kang SW, Kuenzel WJ. Identification of arginine vasotocin (AVT) neurons activated by acute and chronic restraint stress in the avian septum and anterior diencephalon. Gen Comp Endocrinol 2014; 202:59-68. [PMID: 24780118 DOI: 10.1016/j.ygcen.2014.04.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Revised: 04/07/2014] [Accepted: 04/09/2014] [Indexed: 01/21/2023]
Abstract
Effects of acute and chronic psychological stress in the brain of domestic avian species have not been extensively studied. Experiments were performed using restraint stress to determine groups of neurons activated in the septum and diencephalon of chickens. Using FOS immunoreactivity six brain structures were shown activated by acute stress including: the lateral hypothalamic area (LHy), ventrolateral thalamic nucleus (VLT), lateral septum (LS), lateral bed nucleus of the stria terminalis (BSTL), nucleus of the hippocampal commissure (NHpC) and the core region of the paraventricular nucleus (PVNc). Additionally, the LHy and PVNc showed increased FOS immunoreactive (-ir) cells in the birds chronically stressed when compared to controls. In contrast, the NHpC showed decreased FOS-ir cells following the 10day chronic stress imposed. Thereafter, restraint stress experiments were performed to identify activated arginine vasotocin (AVT) neurons (parvocellular or magnocellular) using immunocytochemistry. Of the six FOS activated structures, the PVN was known to contain distinct size groups of AVT-ir neurons, parvocellular (small), medium sized and magnocellular (large). Using dual immunostaining (AVT/FOS), AVT-ir parvocellular neurons in the PVNc were found activated in both acute and chronic stress. To determine whether these AVT-ir parvocellular neurons are co-localized with corticotropin releasing hormone (CRH), an attempt was made to visualize CRH-ir neurons using colchicine. Although AVT-ir and CRH-ir parvocellular neurons occur in the PVNc, only a few neurons were shown co-localized with AVT and CRH after acute restraint stress. Results of this study suggest that the NHpC, LS, VLT, BSTL, LHy and AVT-ir parvocellular neurons in the PVNc are associated with psychological stress in birds.
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Affiliation(s)
- Gurueswar Nagarajan
- The Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - Brian A Tessaro
- The Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - Seong W Kang
- The Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - Wayne J Kuenzel
- The Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA.
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YAYOU KI, ITO S, KASUYA E, SUTOH M, YAMAMOTO N. Effects of Intracerebroventricularly Administered Carbetocin on Social Behavior in Holstein Steers. J Vet Med Sci 2013; 75:1147-52. [DOI: 10.1292/jvms.12-0560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Ken-ichi YAYOU
- Animal Physiology Research Unit, National Institute of Agrobiological Sciences, 2, Ikenodai, Tsukuba, Ibaraki 305–8602, Japan
| | - Shuichi ITO
- Department of Animal Science, Tokai University, Kawayu, Minamiaso, Aso-gun, Kumamoto 869–1404, Japan
| | - Etsuko KASUYA
- Animal Physiology Research Unit, National Institute of Agrobiological Sciences, 2, Ikenodai, Tsukuba, Ibaraki 305–8602, Japan
| | - Madoka SUTOH
- Animal Physiology and Nutrition Research Division, National Institute of Livestock and Grassland Science, 2, Ikenodai, Tsukuba, Ibaraki 305–0901, Japan
| | - Naoyuki YAMAMOTO
- Livestock Production and Wildlife Management Research Division, NARO Western Region Agricultural Research Center, 60 Yoshinaga, Ooda-shi, Shimane 694–0013, Japan
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Yayou KI, Kitagawa S, Ito S, Kasuya E, Sutoh M. Effect of oxytocin, prolactin-releasing peptide, or corticotropin-releasing hormone on feeding behavior in steers. Gen Comp Endocrinol 2011; 174:287-91. [PMID: 21945119 DOI: 10.1016/j.ygcen.2011.09.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 08/29/2011] [Accepted: 09/04/2011] [Indexed: 12/25/2022]
Abstract
As a preliminary step to elucidate the involvement of central neurotransmitters in the dip in voluntary feed intake during the perinatal period in cows, we investigated the effect of intracerebroventricular (ICV) administration of oxytocin, prolactin-releasing peptide (PrRP), or corticotropin-releasing hormone (CRH), the central functions of all of which undergo drastic changes during the perinatal period, on feed intake in steers. Thirty minutes before the onset of feeding, the treatment solution was injected into the third ventricle through an implanted cannula, and feeding-related behaviors were observed for 1 h after the onset of feeding. Neither ICV oxytocin (5 and 50 μg) nor PrRP (2 and 20 nmol) reduced feed intake (n=6). Twenty nanomoles of bovine CRH noticeably inhibited feeding behavior compared with vehicle treatment (n=5, p<0.05). Fifty micrograms of oxytocin reduced latency to the first water access after feeding onset (p<0.1), which may be because of the stimulation of arginine vasopressin V1b receptor by the high dose of oxytocin. We conclude that CRH inhibits feeding behavior by its central action in this species, although this could also be an indirect effect due to the increased expression of abnormal behaviors caused by CRH. Central administration of neither oxytocin nor PrRP reduced feed intake in steers. Although the effects of sex steroids need to be examined, it appears that increased activity of oxytocin, and possibly PrRP, during the perinatal period does not contribute to the dip in voluntary feed intake in this species. On the other hand, it makes sense that suppressed central CRH activity during the perinatal period should act in the direction of maintaining or even increasing food intake to aid a steady supply of energy to the fetus or offspring. We thus speculate that CRH is not a prime candidate involved in the dip in voluntary feed intake during the perinatal period in cows.
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Affiliation(s)
- Ken-ichi Yayou
- Laboratory of Neurobiology, National Institute of Agrobiological Sciences, 2 Ikenodai, Tsukuba, Ibaraki 305-8602, Japan.
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KITAGAWA S, ABE N, SUTOH M, KASUYA E, SUGITA S, AOYAMA M, YAYOU KI. Effect of intracerebroventricular injections of prolactin-releasing peptide on prolactin release and stress-related responses in steers. Anim Sci J 2011; 82:314-9. [DOI: 10.1111/j.1740-0929.2010.00841.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Nitric oxide and interleukin-1β mediate noradrenergic induced corticotrophin-releasing hormone release in organotypic cultures of rat paraventricular nucleus. Neuroscience 2010; 165:1191-202. [DOI: 10.1016/j.neuroscience.2009.12.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Revised: 11/27/2009] [Accepted: 12/01/2009] [Indexed: 11/18/2022]
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Yayou K, Kitagawa S, Ito S, Kasuya E, Sutoh M. Effects of intracerebroventricular administration of neuromedin U or neuromedin S in steers. Gen Comp Endocrinol 2009; 163:324-8. [PMID: 19442664 DOI: 10.1016/j.ygcen.2009.04.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2009] [Revised: 04/24/2009] [Accepted: 04/29/2009] [Indexed: 11/26/2022]
Abstract
Although neuromedin U (NMU) and neuromedin S (NMS) are reported to modulate stress responses mainly through corticotropin-releasing hormone system in rodents, the in vivo effects of centrally administered NMU or NMS on stress regulation have not been fully elucidated in cattle. We examined adrenocorticotropic hormone levels, body temperature, and behavioral responses to intracerebroventricularly (ICV) administered rat NMU or rat NMS in steers. ICV NMU and NMS (0.2, 2, and 20 nmol/200 microl) evoked a dose-related increase in plasma cortisol concentrations (CORT). There was a significant time-treatment interaction for the time course of CORT (p<0.001). ICV NMU evoked a dose-related increase in rectal temperature (RT). There was a significant time-treatment interaction for the change in RT from pre-injection value (p<0.05). There was a significant difference among treatments in the percentage of time spent lying (Friedman's test, chi(2)=15.6, p<0.01) and in the total number of head shaking (Friedman's test, chi(2)=14.49, p<0.01). A high dose of NMS tended to shorten the duration of lying and increase the number of head shaking. These findings indicate that both central NMU and NMS might participate in controlling the hypothalamo-pituitary-adrenal axis, that central NMU might participate in controlling body temperature, and that central NMS is likely to be involved in behavioral activation in cattle.
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Affiliation(s)
- K Yayou
- Laboratory of Neurobiology, National Institute of Agrobiological Sciences, Tsukuba 305-8602, Japan.
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Yayou KI, Nakamura M, Ito S. Effects of AVP V1a and CRH receptor antagonist on psychological stress responses to frustrating condition in sheep. J Vet Med Sci 2009; 71:431-9. [PMID: 19420845 DOI: 10.1292/jvms.71.431] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Arginine vasopressin (AVP) and corticotropin-releasing hormone (CRH) are released in the brain to regulate behavioral and physiological stress responses. To elucidate the respective roles of these peptides under certain stressors, we examined the effects of intracerebroventricular infusions of either AVP V1a receptor antagonist, [Pmp(1), Tyr (Me)(2)]- Arg(8)-Vasopressin (Pmp, Tyr-AVP) or CRH receptor antagonist, alpha-helical CRF 9-41 (alphahCRF) on stress responses induced by frustrating condition in sheep. Four ovariectomized Corriedale ewes were assigned to the experiment. In a "frustrating" condition (FC), food was withheld for 60 minutes from only the experimental ewe while this ewe was in the presence of the other ewes that were given food. As "non-frustrating" control condition (C), food was withheld for 60 minutes from all ewes, thereby controlling for the nonspecific effects of lack of food. FC induced a significant rise in the plasma cortisol concentration (p < 0.05) and increased the pawing number and rectal temperature compared with that in C (p < 0.1). The effects of either Pmp, Tyr-AVP or alphahCRF on these stress responses were analyzed. The rise in cortisol restored nearly to the control level by infusion of Pmp, Tyr-AVP or alphahCRF. The pawing number restored nearly to the control level by alphahCRF. The hyperthermia restored nearly to the control level by Pmp, Tyr-AVP. These data suggest that both endogenous CRH and AVP might be concerned with inducing physiological and behavioral stress responses to frustrating condition in sheep.
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Affiliation(s)
- Ken-Ichi Yayou
- Laboratory of Neurobiology, National Institute of Agrobiological Sciences, Ibaraki, 305-8602, Japan.
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YAYOU KI, ITO S, KASUYA E, SUTOH M, OHKURA S, OKAMURA H. Intracerebroventricularly Administered Oxytocin Attenuated Cortisol Secretion, but not Behavioral Responses, during Isolation in Holstein Steers. J Vet Med Sci 2008; 70:665-71. [DOI: 10.1292/jvms.70.665] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Ken-ichi YAYOU
- Laboratory of Neurobiology, National Institute of Agrobiological Sciences
| | - Shuichi ITO
- Department of Animal Science, Tokai University
| | - Etsuko KASUYA
- Laboratory of Neurobiology, National Institute of Agrobiological Sciences
| | - Madoka SUTOH
- Endocrinology and Metabolism Research Team, National Institute of Livestock and Grassland Science
| | - Satoshi OHKURA
- Laboratory of Animal Production Science, Nagoya University
| | - Hiroaki OKAMURA
- Laboratory of Neurobiology, National Institute of Agrobiological Sciences
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