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Değirmenci MD, Çalışkan H, Güneş E. Effects of chronic intermittent cold stress on anxiety-depression-like behaviors in adolescent rats. Behav Brain Res 2024:115130. [PMID: 38936426 DOI: 10.1016/j.bbr.2024.115130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 06/14/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024]
Abstract
Stress, which triggers numerous physiological and behavioral responses in the organism, is a significant risk factor that contributes to the development of psychiatric disorders such as depression and anxiety. This study aimed to investigate the inflammation, oxidative stress status, anxiety, and depression-like behaviors of adolescent rodents exposed to chronic intermittent cold stress. Adolescent male rats were subjected to a modified chronic intermittent cold stress model (21 days, 1hour/day, 4 °C). Depression-like behaviors were evaluated using the sucrose preference and forced swimming tests, while anxiety-like behaviors were assessed using the open field, elevated plus maze, and light-dark box tests. We measured levels of cortisol, tumor necrosis factor-α, interleukin-1β, brain-derived natriuretic factor, reactive oxygen species, malondialdehyde, total oxidants and antioxidants, and other chemicals in the prefrontal cortex, thalamus, striatum, and hippocampus brain regions of rats using ELISA and colorimetric methods. Data were analyzed using Student's t-test and Pearson correlation analysis. After the cold stress treatment, both anxiety and depression-like behaviors increased remarkably in the subjects. Our study revealed significant changes in various brain regions among the stress-exposed subjects. Cold stress resulted in decreased BDNF levels in the prefrontal cortex and striatum (p < 0.05), increased cortisol levels in the prefrontal cortex (p < 0.05), increased IL-1β levels in the hippocampus and thalamus (p < 0.05), increased protein carbonyl levels in the striatum (p < 0.05), and decreased TAS in the prefrontal cortex and thalamus (p < 0.05). Adolescent rats exposed to cold exhibit both anxiety- and depression-like behaviors. This study observed an increase in inflammation and oxidative stress in various brain regions, yet the responses to stress varied. Our findings suggest that adolescence is a period of heightened sensitivity to stress, which can lead to dramatic consequences.
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Affiliation(s)
| | - Hasan Çalışkan
- Balıkesir University Medicine Faculty, Physiology Department, Balıkesir, Turkey
| | - Emel Güneş
- Ankara University Medicine Faculty, Physiology Department, Ankara, Turkey
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Sarma MK, Saha D, Das BK, Das T, Azizov S, Kumar D. A delve into the pharmacological targets and biological mechanisms of Paederia foetida Linn.: a rather invaluable traditional medicinal plant. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2023; 396:2217-2240. [PMID: 37099165 DOI: 10.1007/s00210-023-02496-4] [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: 02/01/2023] [Accepted: 04/13/2023] [Indexed: 04/27/2023]
Abstract
Drug development from herbal medicines or botanical sources is believed to have a prominent role in the exploration of novel counteractive drugs that has sparked much interest in recent times. Paederia foetida is one such medicinal plant used in both traditional and folkloric medicine. Several parts of the herb are locally utilised as a natural curative agent for several ailments since time immemorial. Paederia foetida indeed possesses anti-diabetic, anti-hyperlipidaemic, antioxidant, nephro-protective, anti-inflammatory, antinociceptive, antitussive, thrombolytic, anti-diarrhoeal, sedative-anxiolytic, anti-ulcer, hepatoprotective activity, anthelmintic and anti-diarrhoeal activity. Furthermore, growing evidence shows many of its active constituents to be effective in cancer, inflammatory diseases, wound healing and spermatogenesis as well. These investigations shed light on possible pharmacological targets and attempts to establish a mechanism of action for these pharmacological effects. These findings contrast the significance of this medicinal plant for further research and for the exploration of novel counteractive drugs to establish a mechanism of action before being employed to healthcare. Pharmacological activities of Paederia foetida and their mechanism of action.
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Affiliation(s)
- Mrinal Kashyap Sarma
- Department of Pharmacology, Girijananda Chowdhury Institute of Pharmaceutical Science, Assam Science and Technology University, Guwahati, 781 017, Assam, India
| | - Dipankar Saha
- Department of Pharmacology, Girijananda Chowdhury Institute of Pharmaceutical Science, Assam Science and Technology University, Guwahati, 781 017, Assam, India.
| | - Bhrigu Kumar Das
- Department of Pharmacology, Girijananda Chowdhury Institute of Pharmaceutical Science, Assam Science and Technology University, Guwahati, 781 017, Assam, India
| | - Trishna Das
- Department of Pharmacology, Girijananda Chowdhury Institute of Pharmaceutical Science, Assam Science and Technology University, Guwahati, 781 017, Assam, India
| | - Shavkatjon Azizov
- Laboratory of Biological Active Macromolecular Systems, Institute of Bioorganic Chemistry, Uzbekistan Academy of Sciences, 100125, Tashkent, Uzbekistan
- Faculty of Life Sciences, Pharmaceutical Technical University, 100084, Tashkent, Uzbekistan
| | - Deepak Kumar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India.
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A single administration of Neurotropin reduced the elongated immobility time in the forced swimming test of rats exposed to repeated cold stress. Behav Pharmacol 2019; 30:547-554. [DOI: 10.1097/fbp.0000000000000488] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sharmin T, Sultana R, Hossain F, Shakil SK, Hossen F, Rashid MMO. Neuropharmacological and antibacterial effects of the ethyl acetate extract of Diospyros malabarica (Ebenaceae) seeds. CLINICAL PHYTOSCIENCE 2018. [DOI: 10.1186/s40816-018-0083-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Hippocampal NR3C1 DNA methylation can mediate part of preconception paternal stress effects in rat offspring. Behav Brain Res 2017; 324:71-76. [DOI: 10.1016/j.bbr.2017.02.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/08/2017] [Accepted: 02/10/2017] [Indexed: 01/17/2023]
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Fujisawa H, Numazawa T, Kawamura M, Naiki M. Neurotropin ® inhibits calpain activity upregulated by specific alternation of rhythm in temperature in the mesencephalon of rats. Life Sci 2017; 171:39-44. [DOI: 10.1016/j.lfs.2016.12.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/15/2016] [Accepted: 12/25/2016] [Indexed: 10/20/2022]
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Miyamoto T, Funakami Y, Kawashita E, Nomura A, Sugimoto N, Saeki H, Tsubota M, Ichida S, Kawabata A. Repeated Cold Stress Enhances the Acute Restraint Stress-Induced Hyperthermia in Mice. Biol Pharm Bull 2017; 40:11-16. [DOI: 10.1248/bpb.b16-00343] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Tomoyoshi Miyamoto
- Faculty of Pharmacy, Kindai University
- Department of Pharmacy, Seichokai Fuchu Hospital
| | | | | | - Ai Nomura
- Faculty of Pharmacy, Kindai University
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Krishna S, Keralapurath MM, Lin Z, Wagner JJ, de La Serre CB, Harn DA, Filipov NM. Neurochemical and electrophysiological deficits in the ventral hippocampus and selective behavioral alterations caused by high-fat diet in female C57BL/6 mice. Neuroscience 2015; 297:170-81. [PMID: 25849614 DOI: 10.1016/j.neuroscience.2015.03.068] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 03/28/2015] [Accepted: 03/31/2015] [Indexed: 01/08/2023]
Abstract
Mounting experimental evidence, predominantly from male rodents, demonstrates that high-fat diet (HFD) consumption and ensuing obesity are detrimental to the brain. To shed additional light on the neurological consequences of HFD consumption in female rodents and to determine the relatively early impact of HFD in the likely continuum of neurological dysfunction in the context of chronic HFD intake, this study investigated effects of HFD feeding for up to 12weeks on selected behavioral, neurochemical, and electrophysiological parameters in adult female C57BL/6 mice; particular focus was placed on the ventral hippocampus (vHIP). Selected locomotor, emotional and cognitive functions were evaluated using behavioral tests after 5weeks on HFD or control (low-fat diet) diets. One week later, mice were sacrificed and brain regional neurochemical (monoamine) analysis was performed. Behaviorally naïve mice were maintained on their respective diets for an additional 5-6weeks at which time synaptic plasticity was determined in ex vivo slices from the vHIP. HFD-fed female mice exhibited increased: (i) locomotor activity in the open field testing, (ii) mean turn time on the pole test, (iii) swimming time in the forced swim test, and (iv) number of marbles buried in the marble burying test. In contrast, the novel object recognition memory was unaffected. Mice on HFD also had decreased norepinephrine and dopamine turnover, respectively, in the prefrontal cortex and the vHIP. HFD consumption for a total of 11-12weeks altered vHIP synaptic plasticity, evidenced by significant reductions in the paired-pulse ratio and long-term potentiation (LTP) magnitude. In summary, in female mice, HFD intake for several weeks induced multiple behavioral alterations of mainly anxiety-like nature and impaired monoamine pathways in a brain region-specific manner, suggesting that in the female, certain behavioral domains (anxiety) and associated brain regions, i.e., the vHIP, are preferentially targeted by HFD.
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Affiliation(s)
- S Krishna
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA
| | - M M Keralapurath
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA
| | - Z Lin
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA
| | - J J Wagner
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA
| | - C B de La Serre
- Department of Foods and Nutrition, College of Family and Consumer Sciences, University of Georgia, Athens, GA 30602, USA
| | - D A Harn
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA
| | - N M Filipov
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA.
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Strata F, Giritharan G, Sebastiano FD, Piane LD, Kao CN, Donjacour A, Rinaudo P. Behavior and brain gene expression changes in mice exposed to preimplantation and prenatal stress. Reprod Sci 2014; 22:23-30. [PMID: 25398605 DOI: 10.1177/1933719114557900] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Preimplantation culture of mouse embryos has been suggested to result in reduced anxiety-like behavior in adulthood. Here, we investigated the effects of in vitro fertilization (IVF), embryo culture, and different diets on anxiety-like behavior using the elevated plus maze (EPM). We hypothesized that exposure to suboptimal conditions during the preimplantation stage would interact with the suboptimal diet to alter behavior. The expression of genes related to anxiety was then assessed by quantitative real-time polymerase chain reaction in various brain regions. When fed a normal diet during gestation and a moderately high-fat Western diet (WD) postnatally, naturally conceived (NC) and IVF mice showed similar anxiety-like behavior on the EPM. However, when fed a low-protein diet prenatally and a high-fat diet postnatally (LP/HF), NC mice showed a modest increase in anxiety-like behavior, whereas IVF mice showed the opposite: a strongly reduced anxiety-like behavior on the EPM. The robust reduction in anxiety-like behavior in IVF males fed the LP/HF diets was, intriguingly, associated with reduced expression of MAO-A, CRFR2, and GABA markers in the hypothalamus and cortex. These findings are discussed in relation to the developmental origin of health and disease hypothesis and the 2-hit model, which suggests that 2 events, occurring at different times in development, can act synergistically with long-term consequences observed during adulthood.
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Affiliation(s)
- Fabrizio Strata
- Dept. of Reproductive Science, University of California San Francisco, San Francisco, CA, USA Dept. Neuroscience, Med. School, Parma University, Parma, Italy
| | - Gnanaratnam Giritharan
- Dept. of Reproductive Science, University of California San Francisco, San Francisco, CA, USA
| | | | | | - Chia-Ning Kao
- Dept. of Reproductive Science, University of California San Francisco, San Francisco, CA, USA
| | - Annemarie Donjacour
- Dept. of Reproductive Science, University of California San Francisco, San Francisco, CA, USA
| | - Paolo Rinaudo
- Dept. of Reproductive Science, University of California San Francisco, San Francisco, CA, USA
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Castilla-Ortega E, Escuredo L, Bilbao A, Pedraza C, Orio L, Estivill-Torrús G, Santín LJ, de Fonseca FR, Pavón FJ. 1-Oleoyl lysophosphatidic acid: a new mediator of emotional behavior in rats. PLoS One 2014; 9:e85348. [PMID: 24409327 PMCID: PMC3883702 DOI: 10.1371/journal.pone.0085348] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 12/04/2013] [Indexed: 11/18/2022] Open
Abstract
The role of lysophosphatidic acid (LPA) in the control of emotional behavior remains to be determined. We analyzed the effects of the central administration of 1-oleoyl-LPA (LPA 18∶1) in rats tested for food consumption and anxiety-like and depression-like behaviors. For this purpose, the elevated plus-maze, open field, Y maze, forced swimming and food intake tests were performed. In addition, c-Fos expression in the dorsal periaqueductal gray matter (DPAG) was also determined. The results revealed that the administration of LPA 18∶1 reduced the time in the open arms of the elevated plus-maze and induced hypolocomotion in the open field, suggesting an anxiogenic-like phenotype. Interestingly, these effects were present following LPA 18∶1 infusion under conditions of novelty but not under habituation conditions. In the forced swimming test, the administration of LPA 18∶1 dose-dependently increased depression-like behavior, as evaluated according to immobility time. LPA treatment induced no effects on feeding. However, the immunohistochemical analysis revealed that LPA 18∶1 increased c-Fos expression in the DPAG. The abundant expression of the LPA1 receptor, one of the main targets for LPA 18∶1, was detected in this brain area, which participates in the control of emotional behavior, using immunocytochemistry. These findings indicate that LPA is a relevant transmitter potentially involved in normal and pathological emotional responses, including anxiety and depression.
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Affiliation(s)
- Estela Castilla-Ortega
- Unidad de Gestión Clínica de Salud Mental, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
- Departamento de Psicobiología y Metodología de las Ciencias del Comportamiento, Universidad de Málaga, Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
| | - Leticia Escuredo
- Departamento de Psicobiología, Universidad Complutense de Madrid, Madrid, Spain
| | - Ainhoa Bilbao
- Unidad de Gestión Clínica de Salud Mental, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
| | - Carmen Pedraza
- Departamento de Psicobiología y Metodología de las Ciencias del Comportamiento, Universidad de Málaga, Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
| | - Laura Orio
- Unidad de Gestión Clínica de Salud Mental, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
- Departamento de Psicobiología, Universidad Complutense de Madrid, Madrid, Spain
| | - Guillermo Estivill-Torrús
- Unidad de Gestión Clínica de Neurociencias, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
| | - Luis J. Santín
- Departamento de Psicobiología y Metodología de las Ciencias del Comportamiento, Universidad de Málaga, Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
- * E-mail: (LJS); (FRDF)
| | - Fernando Rodríguez de Fonseca
- Unidad de Gestión Clínica de Salud Mental, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
- Departamento de Psicobiología, Universidad Complutense de Madrid, Madrid, Spain
- * E-mail: (LJS); (FRDF)
| | - Francisco Javier Pavón
- Unidad de Gestión Clínica de Salud Mental, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
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Evaluation of anxiolytic effect of Syzygium aromaticum: a traditional herb of India. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2014. [DOI: 10.1016/s2222-1808(14)60418-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Niknazar S, Nahavandi A, Najafi R, Danialy S, Zare Mehrjerdi F, Karimi M. Parents’ adulthood stress induces behavioral and hormonal alterations in male rat offspring. Behav Brain Res 2013; 252:136-43. [DOI: 10.1016/j.bbr.2013.05.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 05/13/2013] [Accepted: 05/18/2013] [Indexed: 01/08/2023]
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Miguel TT, Gomes KS, Nunes-de-Souza RL. Contrasting effects of nitric oxide and corticotropin- releasing factor within the dorsal periaqueductal gray on defensive behavior and nociception in mice. Braz J Med Biol Res 2012; 45:299-307. [PMID: 22450373 PMCID: PMC3854172 DOI: 10.1590/s0100-879x2012007500043] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Accepted: 03/14/2012] [Indexed: 01/28/2024] Open
Abstract
The anxiogenic and antinociceptive effects produced by glutamate N-methyl-D-aspartate receptor activation within the dorsal periaqueductal gray (dPAG) matter have been related to nitric oxide (NO) production, since injection of NO synthase (NOS) inhibitors reverses these effects. dPAG corticotropin-releasing factor receptor (CRFr) activation also induces anxiety-like behavior and antinociception, which, in turn, are selectively blocked by local infusion of the CRF type 1 receptor (CRFr1) antagonist, NBI 27914 [5-chloro-4-(N-(cyclopropyl)methyl-N-propylamino)-2-methyl-6-(2,4,6-trichlorophenyl)aminopyridine]. Here, we determined whether i) the blockade of the dPAG by CRFr1 attenuates the anxiogenic/antinociceptive effects induced by local infusion of the NO donor, NOC-9 [6-(2-hydroxy-1-methyl-2-nitrosohydrazino)-N-methyl-1-hexanamine], and ii) the anxiogenic/antinociceptive effects induced by intra-dPAG CRF are prevented by local infusion of N(ω)-propyl-L-arginine (NPLA), a neuronal NOS inhibitor, in mice. Male Swiss mice (12 weeks old, 25-35 g, N = 8-14/group) were stereotaxically implanted with a 7-mm cannula aimed at the dPAG. Intra-dPAG NOC-9 (75 nmol) produced defensive-like behavior (jumping and running) and antinociception (assessed by the formalin test). Both effects were reversed by prior local infusion of NBI 27914 (2 nmol). Conversely, intra-dPAG NPLA (0.4 nmol) did not modify the anxiogenic/antinociceptive effects of CRF (150 pmol). These results suggest that CRFr1 plays an important role in the defensive behavior and antinociception produced by NO within the dPAG. In contrast, the anxiogenic and antinociceptive effects produced by intra-dPAG CRF are not related to NO synthesis in this limbic midbrain structure.
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Affiliation(s)
- T T Miguel
- Programa Interinstitucional de Pós-Graduação em Ciências Fisiológicas, Universidade Federal de São Carlos, Araraquara, SP, Brasil
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Funakami Y, Itoh E, Hata T, Wada T, Ichida S. Specific alternation of rhythm in temperature (SART) stress-induced irritable bowel syndrome-like changes in mice and effects of drugs. Biol Pharm Bull 2011; 33:1545-9. [PMID: 20823572 DOI: 10.1248/bpb.33.1545] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Stress is closely associated with the manifestation and progress of irritable bowel syndrome (IBS). For the purpose of establishing experimentally the relationship between IBS and stress, the transportation capacity of the small intestine in specific alternation of rhythm in temperature (SART)-stressed animals was studied using charcoal transportation method. The charcoal suspension was administered orally into the stomach of fasting mice. Mice were sacrificed after a certain time and %charcoal transit (%CT) of the small intestine was measured. The %CTs in SART-stressed mice were greater than those in unstressed or continuously cold-stressed mice. This increase in %CT remained for 1 week after discontinuation of SART stress loading. Cholinergic blockers decreased %CTs in SART-stressed mice. Increases in %CT by a cholinesterase inhibitor were less in SART-stressed mice than in unstressed mice. Increases of %CT in SART-stressed mice were suppressed by Neurotropine. These results suggested that the parasympathetic hypertonicity, not just cold, played a role in the increases in the transportation capacity in SART-stressed mice and that these animals can be a useful tool for elucidation of the mechanism of IBS.
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Thippeswamy B, Mishra B, Veerapur V, Gupta G. Anxiolytic activity of Nymphaea alba Linn. in mice as experimental models of anxiety. Indian J Pharmacol 2011; 43:50-5. [PMID: 21455422 PMCID: PMC3062121 DOI: 10.4103/0253-7613.75670] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Revised: 08/03/2010] [Accepted: 10/21/2010] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE The aim of the present work was to evaluate the anxiolytic effect of an ethanolic extract of Nymphaea alba Linn. in mice. MATERIALS AND METHODS The elevated plus maze test (EPMT), light and dark test (L and DT) and open field test (OFT) were used to assess the anxiolytic activity of the ethanolic extract of N. alba Linn. in mice. In addition, aggressive behavior and motor coordination was also assessed by foot shock induced aggression test (FSIAT) and rota rod test (RRT). Diazepam 1 mg/kg served as a standard anxiolytic drug, administered orally. RESULTS The ethanolic extract of N. alba (100 and 200 mg/kg, p.o.) significantly increased the percentage of time spent and number of entries in open arm in EPMT. In L and DT, the extract produced significant increase in time spent, number of crossing and decrease in the duration of immobility in light box. In OFT, the extract showed significant increase in number of rearings, assisted rearings and number of square crossed, all of which are demonstrations of exploratory behavior. In FSIAT, N. alba extract attenuated aggressive behavior related to anxiolytic activity, such as number of vocalization, leaps, rearing, biting/attacks and facing each other in paired mice. Furthermore, the extract produced skeletal muscle relaxant effect assessed by RRT. CONCLUSION The results of the present study suggest that an ethanolic extract of N. alba may possess anxiolytic activity and provide a scientific evidence for its traditional claim.
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Affiliation(s)
- B.S. Thippeswamy
- Department of Pharmacology, Sree Siddaganga College of Pharmacy, Tumkur - 572 102, Karnataka, India
| | - Brijesh Mishra
- Department of Pharmacology, Sree Siddaganga College of Pharmacy, Tumkur - 572 102, Karnataka, India
| | - V.P. Veerapur
- Quality Assurance, Sree Siddaganga College of Pharmacy, Tumkur - 572 102, Karnataka, India
| | - Gourav Gupta
- Department of Pharmacology, Sree Siddaganga College of Pharmacy, Tumkur - 572 102, Karnataka, India
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CRF-1 antagonist and CRF-2 agonist decrease binge-like ethanol drinking in C57BL/6J mice independent of the HPA axis. Neuropsychopharmacology 2010; 35:1241-52. [PMID: 20130533 PMCID: PMC2927867 DOI: 10.1038/npp.2009.209] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Recent evidence suggests that corticotropin-releasing factor (CRF) receptor (CRFR) signaling is involved in modulating binge-like ethanol consumption in C57BL/6J mice. In this report, a series of experiments were performed to further characterize the role of CRFR signaling in binge-like ethanol consumption. The role of central CRFR signaling was assessed with intracerebroventricular (i.c.v.) infusion of the nonselective CRFR antagonist, alpha-helical CRF(9-41) (0, 1, 5, 10 microg/1 microl). The contribution of central CRF type 2 receptor (CRF(2)R) signaling was assessed with i.c.v. infusion of the selective CRF(2)R agonist, urocortin (Ucn) 3 (0, 0.05, 0.1, or 0.5 microg/1 microl). The role of the hypothalamic-pituitary-adrenal (HPA) axis was assessed by pretreating mice with intraperitoneal (i.p.) injection of (1) the corticosterone synthesis inhibitor, metyrapone (0, 50, 100, 150 mg/kg) or (2) the glucocorticoid receptor antagonist, mifepristone (0, 25, 50 mg/kg), and (3) by using radioimmunoassay to determine whether binge-like ethanol intake influenced plasma corticosterone levels. Finally, we determined whether the ability of the CRF(1)R antagonist, CP-154,526 (CP; 0, 10, 15 mg/kg, i.p.), to blunt binge-like drinking required normal HPA axis signaling by comparing the effectiveness of CP in adrenalectomized (ADX) and normal mice. Results showed that i.c.v. infusion of a 1 microg dose of alpha-helical CRF(9-41) significantly attenuated binge-like ethanol consumption relative to vehicle treatment, and i.c.v. infusion of Ucn 3 dose-dependently blunted binge-like drinking. On the other hand, metyrapone nonselectively reduced both ethanol and sucrose consumption, mifepristone did not alter ethanol drinking, and binge-like drinking did not correlate with plasma corticosterone levels. Finally, i.p. injection of CP significantly attenuated binge-like ethanol intake in both ADX and normal mice. Together, these results suggest that binge-like ethanol intake in C57BL/6J mice is modulated by CRF(1)R and CRF(2)R signaling, such that blockade of CRF(1)R or activation of CRF(2)R effectively reduces excessive ethanol intake. Furthermore, normal HPA axis signaling is not necessary to achieve binge-like drinking behavior.
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Makino T, Kato K, Mizukami H. Processed Aconite Root Prevents Cold-Stress-Induced Hypothermia and Immuno-Suppression in Mice. Biol Pharm Bull 2009; 32:1741-8. [PMID: 19801837 DOI: 10.1248/bpb.32.1741] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Toshiaki Makino
- Department of Pharmacognosy, Graduate School of Pharmaceutical Science, Nagoya City University
| | - Keita Kato
- Department of Pharmacognosy, Graduate School of Pharmaceutical Science, Nagoya City University
| | - Hajime Mizukami
- Department of Pharmacognosy, Graduate School of Pharmaceutical Science, Nagoya City University
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18
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Dunn AJ, Swiergiel AH. Effects of Acute and Chronic Stressors and CRF in Rat and Mouse Tests for Depression. Ann N Y Acad Sci 2008; 1148:118-26. [DOI: 10.1196/annals.1410.022] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Lu A, Steiner MA, Whittle N, Vogl AM, Walser SM, Ableitner M, Refojo D, Ekker M, Rubenstein JL, Stalla GK, Singewald N, Holsboer F, Wotjak CT, Wurst W, Deussing JM. Conditional mouse mutants highlight mechanisms of corticotropin-releasing hormone effects on stress-coping behavior. Mol Psychiatry 2008; 13:1028-42. [PMID: 18475271 DOI: 10.1038/mp.2008.51] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Hypersecretion of central corticotropin-releasing hormone (CRH) has been implicated in the pathophysiology of affective disorders. Both, basic and clinical studies suggested that disrupting CRH signaling through CRH type 1 receptors (CRH-R1) can ameliorate stress-related clinical conditions. To study the effects of CRH-R1 blockade upon CRH-elicited behavioral and neurochemical changes we created different mouse lines overexpressing CRH in distinct spatially restricted patterns. CRH overexpression in the entire central nervous system, but not when overexpressed in specific forebrain regions, resulted in stress-induced hypersecretion of stress hormones and increased active stress-coping behavior reflected by reduced immobility in the forced swim test and tail suspension test. These changes were related to acute effects of overexpressed CRH as they were normalized by CRH-R1 antagonist treatment and recapitulated the effect of stress-induced activation of the endogenous CRH system. Moreover, we identified enhanced noradrenergic activity as potential molecular mechanism underlying increased active stress-coping behavior observed in these animals. Thus, these transgenic mouse lines may serve as animal models for stress-elicited pathologies and treatments that target the central CRH system.
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Affiliation(s)
- A Lu
- Max Planck Institute of Psychiatry, Munich, Germany
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20
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Protein kinase C epsilon mediation of CRF- and ethanol-induced GABA release in central amygdala. Proc Natl Acad Sci U S A 2008; 105:8410-5. [PMID: 18541912 DOI: 10.1073/pnas.0802302105] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In the central amygdala (CeA), ethanol acts via corticotrophin-releasing factor (CRF) type 1 receptors to enhance GABA release. Amygdala CRF mediates anxiety associated with stress and drug dependence, and it regulates ethanol intake. Because mutant mice that lack PKCepsilon exhibit reduced anxiety-like behavior and alcohol consumption, we investigated whether PKCepsilon lies downstream of CRF(1) receptors in the CeA. Compared with PKCepsilon(+/+) CeA neurons, PKCepsilon(-/-) neurons showed increased GABAergic tone due to enhanced GABA release. CRF and ethanol stimulated GABA release in the PKCepsilon(+/+) CeA, but not in the PKCepsilon(-/-) CeA. A PKCepsilon-specific inhibitor blocked both CRF- and ethanol-induced GABA release in the PKCepsilon(+/+) CeA, confirming findings in the PKCepsilon(-/-) CeA. These results identify a PKCepsilon signaling pathway in the CeA that is activated by CRF(1) receptor stimulation, mediates GABA release at nerve terminals, and regulates anxiety and alcohol consumption.
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21
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Swiergiel AH, Leskov IL, Dunn AJ. Effects of chronic and acute stressors and CRF on depression-like behavior in mice. Behav Brain Res 2008; 186:32-40. [PMID: 17716752 DOI: 10.1016/j.bbr.2007.07.018] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2007] [Revised: 07/09/2007] [Accepted: 07/15/2007] [Indexed: 10/23/2022]
Abstract
The effects of chronic footshock (CFS) on behavioral responses of CD1 mice to acute footshock and restraint were studied in tests commonly used to assess antidepressant treatments. Adult male mice were subjected to 20 min of footshock daily for 14-16 days, and then tested in the tail suspension test (TST) and the forced swim test (FST). CFS treatment did not alter immobility in the TST when mice were tested before the footshock on that day. However, when the TST was performed after the footshock, immobility decreased in both control and CFS mice. In the FST, chronic footshock significantly increased the time spent floating when mice were tested before footshock on that day. However, when the FST was performed immediately after the footshock, floating decreased in the CFS mice, but not in previously unshocked mice. Restraint, shortly before the FST, decreased floating in both CFS and unshocked mice. Thus, CFS induced depression-like activity in the FST, but not in the TST, whereas acute footshock or restraint immediately before testing induced antidepressant-like effects in both the TST and the FST. In unshocked mice, intracerebroventricular corticotropin-releasing factor (CRF) consistently decreased immobility in the TST and the FST, with significant effects at the 100ng dose. The same dose of CRF depressed activity in the open field, so that these changes in immobility are unlikely to reflect a change in overall activity. CRF thus mimicked the effects of the acute stressors in the TST and the FST. Responses to icv CRF were attenuated by chronic footshock suggesting that CFS desensitizes the brain to CRF. CFS treatment did not alter basal concentrations of ACTH and corticosterone in blood plasma. Acute footshock increased the plasma concentrations of the hormones but in CFS mice these responses were attenuated, significantly for plasma ACTH. Acute footshock activated brain dopamine, norepinephrine and serotonin metabolism, and increased tryptophan concentrations in the brain. In CFS mice, these responses were attenuated, significantly for hypothalamic NE.
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Affiliation(s)
- Artur H Swiergiel
- Department of Pharmacology, Toxicology and Neuroscience, Louisiana State University Health Sciences Center, Shreveport, LA 71130-3932, USA.
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22
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Lesscher HMB, McMahon T, Lasek AW, Chou WH, Connolly J, Kharazia V, Messing RO. Amygdala protein kinase C epsilon regulates corticotropin-releasing factor and anxiety-like behavior. GENES BRAIN AND BEHAVIOR 2007; 7:323-33. [PMID: 17908177 DOI: 10.1111/j.1601-183x.2007.00356.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Corticotropin-releasing factor (CRF), its receptors, and signaling pathways that regulate CRF expression and responses are areas of intense investigation for new drugs to treat affective disorders. Here, we report that protein kinase C epsilon (PKCepsilon) null mutant mice, which show reduced anxiety-like behavior, have reduced levels of CRF messenger RNA and peptide in the amygdala. In primary amygdala neurons, a selective PKCepsilon activator, psiepsilonRACK, increased levels of pro-CRF, whereas reducing PKCepsilon levels through RNA interference blocked phorbol ester-stimulated increases in CRF. Local knockdown of amygdala PKCepsilon by RNA interference reduced anxiety-like behavior in wild-type mice. Furthermore, local infusion of CRF into the amygdala of PKCepsilon(-/-) mice increased their anxiety-like behavior. These results are consistent with a novel mechanism of PKCepsilon control over anxiety-like behavior through regulation of CRF in the amygdala.
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Affiliation(s)
- H M B Lesscher
- Department of Neurology, Ernest Gallo Clinic and Research Center, University of California at San Francisco, Emeryville, CA 94608, USA
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