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Wang HY, Zhu ML, Hou YW, Han MM, Zhang L. Exploring the therapeutic effect of core components in Xuanshen Yishen mixture on hypertension through network pharmacology. Am J Transl Res 2024; 16:2877-2888. [PMID: 39114699 PMCID: PMC11301474 DOI: 10.62347/mzgo7330] [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: 02/28/2024] [Accepted: 06/07/2024] [Indexed: 08/10/2024]
Abstract
OBJECTIVE This study aims to elucidate the mechanism of action and impact of the "Xuanshen Yishen Mixture" (XYM) on hypertension. METHODS Active components were identified and potential targets were predicted using the Traditional Chinese Medicine Systems Pharmacology database. Hypertension-related targets were collected from GeneCards, DRUGBANK, OMIM, TTD, and PharmaGKB databases. Intersections of disease and drug targets were visualized using the R package "VennDiagram". A protein-protein interaction network was established via the STRING database. GO function enrichment and KEGG pathway analyses were conducted using "clusterProfiler", while "Cytoscape" was used to construct a "drug-component-target" network. Additionally, data from 60 patients with essential hypertension from the Affiliated Hospital of Shandong University of Traditional Chinese Medicine were retrospectively analyzed. Patients were divided into a control group (n = 30) and an XYM group (n = 30) based on treatment regimen. RESULTS Sixty active ingredients and 98 related targets were identified from Uncaria, Radix Scrophulariae, and Epimedium in hypertension treatment. Key active components such as quercetin, kaempferol, yohimbine, and beta-sitosterol were pinpointed, with PTGS2, PTGS1, AR, DPP4, and F2 as crucial targets. KEGG pathway analysis highlighted significant pathways including IL-17 signaling, TNF signaling, Relaxin signaling, and HIF-1 signaling. Clinical data indicated that XYM's therapeutic effects are comparable to those of valsartan, which significantly reduced diastolic and systolic blood pressure and demonstrated good biosafety. CONCLUSIONS Uncaria, Radix Scrophulariae, and Epimedium effectively mitigate hypertension through multiple components, targets, and pathways. Additionally, DPP4, IL-17, and TNF-α are identified as potential therapeutic targets for traditional Chinese medicine preparations in hypertension treatment. This study provides a foundation for further investigation into XYM's mechanisms in hypertension management.
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Affiliation(s)
- Hai-Yan Wang
- The Second Affiliated Hospital of Shandong UniversityJinan 250000, Shandong, China
| | - Mo-Li Zhu
- Shandong University of Traditional Chinese MedicineJinan 250355, Shandong, China
| | - Ya-Wei Hou
- Shandong University of Traditional Chinese MedicineJinan 250355, Shandong, China
| | - Ming-Ming Han
- Shandong First Medical University Affiliated Occupational Disease HospitalJinan 250000, Shandong, China
| | - Lei Zhang
- Affiliated Hospital of Shandong University of Traditional Chinese MedicineJinan 250014, Shandong, China
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2
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Bradley SA, Hansson FG, Lehka BJ, Rago D, Pinho P, Peng H, Adhikari KB, Haidar AK, Hansen LG, Volkova D, Holtz M, Muyo Abad S, Ma X, Koudounas K, Besseau S, Gautron N, Mélin C, Marc J, Birer Williams C, Courdavault V, Jensen ED, Keasling JD, Zhang J, Jensen MK. Yeast Platforms for Production and Screening of Bioactive Derivatives of Rauwolscine. ACS Synth Biol 2024; 13:1498-1512. [PMID: 38635307 DOI: 10.1021/acssynbio.4c00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Monoterpene indole alkaloids (MIAs) make up a highly bioactive class of metabolites produced by a range of tropical and subtropical plants. The corynanthe-type MIAs are a stereochemically complex subclass with therapeutic potential against a large number of indications including cancer, psychotic disorders, and erectile dysfunction. Here, we report yeast-based cell factories capable of de novo production of corynanthe-type MIAs rauwolscine, yohimbine, tetrahydroalstonine, and corynanthine. From this, we demonstrate regioselective biosynthesis of 4 fluorinated derivatives of these compounds and de novo biosynthesis of 7-chlororauwolscine by coexpression of a halogenase with the biosynthetic pathway. Finally, we capitalize on the ability of these cell factories to produce derivatives of these bioactive scaffolds to establish a proof-of-principle drug discovery pipeline in which the corynanthe-type MIAs are screened for bioactivity on human drug targets, expressed in yeast. In doing so, we identify antagonistic and agonistic behavior against the human adrenergic G protein-coupled receptors ADRA2A and ADRA2B, and the serotonergic receptor 5HT4b, respectively. This study thus demonstrates a proto-drug discovery pipeline for bioactive plant-inspired small molecules based on one-pot biocatalysis of natural and new-to-nature corynanthe-type MIAs in yeast.
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Affiliation(s)
- Samuel A Bradley
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Frederik G Hansson
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Beata J Lehka
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Daniela Rago
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Pedro Pinho
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Huadong Peng
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Khem B Adhikari
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Ahmad K Haidar
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Lea G Hansen
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
- Biomia ApS, DK-2100 Copenhagen, Denmark
| | - Daria Volkova
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Maxence Holtz
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Sergi Muyo Abad
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Xin Ma
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Konstantinos Koudounas
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, F-37200 Tours, France
| | - Sébastien Besseau
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, F-37200 Tours, France
| | - Nicolas Gautron
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, F-37200 Tours, France
| | - Céline Mélin
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, F-37200 Tours, France
| | - Jillian Marc
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, F-37200 Tours, France
| | - Caroline Birer Williams
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, F-37200 Tours, France
| | - Vincent Courdavault
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, F-37200 Tours, France
| | - Emil D Jensen
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Jay D Keasling
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
- Joint BioEnergy Institute, Emeryville, California 94608,United States
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720,United States
- Department of Chemical and Biomolecular Engineering, Department of Bioengineering, University of California, Berkeley, California 94720, United States
- Center for Synthetic Biochemistry, Institute for Synthetic Biology, Shenzhen Institutes of Advanced Technologies, Shenzhen 518055, China
| | - Jie Zhang
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
- Biomia ApS, DK-2100 Copenhagen, Denmark
| | - Michael K Jensen
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Lyngby, Denmark
- Biomia ApS, DK-2100 Copenhagen, Denmark
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3
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Schwartz K, Zhang M, Franco B, Jampachaisri K, Cotton RM, Huss MK, Fisher KM, Darian-Smith C, Sharp P, Pablo L, Pacharinsak C. Effects of atipamezole on selected physiologic parameters in cynomolgus macaques (Macaca fascicularis). J Med Primatol 2024; 53:e12682. [PMID: 37908039 DOI: 10.1111/jmp.12682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 10/09/2023] [Indexed: 11/02/2023]
Abstract
BACKGROUND Atipamezole, an α-2 adrenergic receptor antagonist, reverses the α-2 agonist anesthetic effects. There is a dearth of information on the physiological effects of these drugs in cynomolgus macaques (Macaca fascicularis). We assessed atipamezole's physiologic effects. We hypothesized atipamezole administration would alter anesthetic parameters. METHODS Five cynomolgus macaques were sedated with ketamine/dexmedetomidine intramuscularly, followed 45 min later with atipamezole (0.5 mg/kg). Anesthetic parameters (heart rate, blood pressure [systolic (SAP), diastolic (DAP), and mean (MAP) blood pressure], body temperature, respiratory rate, and %SpO2) were monitored prior to and every 10 min (through 60 min) post atipamezole injection. RESULTS While heart rate was significantly increased for 60 min; SAP, DAP, MAP, and temperature were significantly decreased at 10 min. CONCLUSIONS This study indicates subcutaneous atipamezole results in increased heart rate and transient blood pressure decrease. These findings are clinically important to ensure anesthetist awareness to properly support and treat patients as needed.
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Affiliation(s)
- K Schwartz
- Department of Comparative Medicine, Stanford University, Stanford, California, USA
| | - M Zhang
- Department of Comparative Medicine, Stanford University, Stanford, California, USA
| | - B Franco
- Department of Comparative Medicine, Stanford University, Stanford, California, USA
| | - K Jampachaisri
- Department of Mathematics, Naresuan University, Phitsanulok, Thailand
| | - R M Cotton
- Department of Comparative Medicine, Stanford University, Stanford, California, USA
| | - M K Huss
- Department of Comparative Medicine, Stanford University, Stanford, California, USA
| | - K M Fisher
- Department of Comparative Medicine, Stanford University, Stanford, California, USA
| | - C Darian-Smith
- Department of Comparative Medicine, Stanford University, Stanford, California, USA
| | - P Sharp
- University of California, Merced, California, USA
- Murdoch University, Murdoch, Western Australia, Australia
| | - L Pablo
- Department of Comparative, Diagnostic & Population Medicine, University of Florida College, Gainesville, Florida, USA
| | - C Pacharinsak
- Department of Comparative Medicine, Stanford University, Stanford, California, USA
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4
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Fushimi T, Hirahata C, Hiroki K, Fujii Y, Calabrese V, Suhara Y, Osakabe N. Activation of transient receptor potential channels is involved in reactive oxygen species (ROS)-dependent regulation of blood flow by (-)-epicatechin tetramer cinnamtannin A2. Biochem Pharmacol 2023:115682. [PMID: 37429424 DOI: 10.1016/j.bcp.2023.115682] [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: 03/31/2023] [Revised: 06/30/2023] [Accepted: 07/06/2023] [Indexed: 07/12/2023]
Abstract
Intervention trials confirmed that blood flow-mediated dilatation increases significantly after intake of astringent (-)-epicatechin (EC) oligomers (procyanidins)-rich foods, but the mechanism remains unclear. We have previously found that procyanidins can activate the sympathetic nervous and subsequently increase blood flow. Here, we examined whether procyanidin-derived reactive oxygen species (ROS) activate transient receptor potential (TRP) channels in gastrointestinal sensory nerves and consequently induce sympathoexcitation. We evaluated the redox properties of EC and its tetramer cinntamtannin A2 (A2) at pH 5 or 7, mimicking plant vacuole or oral cavity/small intestine using a luminescent probe. At pH 5, A2 or EC showed O2・- scavenging ability, but they promoted O2・- generation at pH 7. We observed blood flow in rat cremaster arterioles using laser Doppler, a single oral dose of 10 µg/kg A2 markedly increased blood flow, while EC showed little activity. This change with A2 was significantly dampened by co-administration of adrenaline blocker, ROS scavenger N-acetyl-L-cysteine (NAC), TRP vanilloid 1, or ankyrin 1 antagonist. We also performed a docking simulation of EC or A2 with the binding site of a typical ligand for each TRP channel and calculated the respective binding affinities. The binding energies were notably higher for A2 than typical ligands, suggesting that A2 is less likely to bind to these sites. ROS produced at neutral pH following the orally administered A2 to the gastrointestinal tract could activate TRP channels, triggering sympathetic hyperactivation and causing hemodynamic changes.
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Affiliation(s)
- Taiki Fushimi
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology
| | - Chie Hirahata
- Systems Engineering and Science, Graduate School of Engineering and Science, Shibaura Institute of Technology
| | - Kento Hiroki
- Department of Bio-science and Engineering, Faculty of System Science and Engineering, Shibaura Institute of Technology
| | - Yasuyuki Fujii
- Department of Bio-science and Engineering, Faculty of System Science and Engineering, Shibaura Institute of Technology
| | - Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania
| | - Yoshitomo Suhara
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology; Systems Engineering and Science, Graduate School of Engineering and Science, Shibaura Institute of Technology; Department of Bio-science and Engineering, Faculty of System Science and Engineering, Shibaura Institute of Technology
| | - Naomi Osakabe
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology; Systems Engineering and Science, Graduate School of Engineering and Science, Shibaura Institute of Technology; Department of Bio-science and Engineering, Faculty of System Science and Engineering, Shibaura Institute of Technology.
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5
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Douton JE, Acharya NK, Stoltzfus B, Sun D, Grigson PS, Nyland JE. Acute glucagon-like peptide-1 receptor agonist liraglutide prevents cue-, stress-, and drug-induced heroin-seeking in rats. Behav Pharmacol 2022; 33:364-378. [PMID: 35695511 PMCID: PMC9308649 DOI: 10.1097/fbp.0000000000000685] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Substance use disorder is challenging to treat due to its relapsing nature. In the last decade, opioid use disorder has been a threat to public health, being declared an epidemic by the Centers for Disease Control and Prevention. This is a tragic situation, considering there currently are only three effective, yet not ideal, treatments to prevent relapse to opioids. Recent research has shown that hormones that modulate hunger and satiety also can modulate motivated behavior for drugs of abuse. For example, the short-acting analog of glucagon-like peptide-1 (GLP-1), an incretin hormone that regulates homeostatic feeding, has been shown to reduce responding for rewarding stimuli such as food, cocaine, heroin, and nicotine when administered over several days or weeks. This may serve as an effective adjuvant during treatment; however, whether it would be effective when used acutely to bridge a patient between cessation of use and onset of medication for the treatment of an opioid addiction is unknown. Here, we tested the acute effects of the longer acting GLP-1 analog, liraglutide, on heroin-seeking. In rats with heroin self-administration experience, we found that subcutaneous administration of an acute dose of 0.3-mg/kg liraglutide was effective in preventing drug-seeking after exposure to three major precipitators: drug-associated cues, stress (yohimbine-induced), and the drug itself. Finally, we confirmed that the reduction in drug-seeking is not due to a locomotor impairment, as liraglutide did not significantly alter performance in a rotarod test. As such, acute use of GLP-1 analogs may serve as a new and effective nonopioid bridge to treatment.
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Affiliation(s)
- Joaquin E Douton
- Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Nikhil K Acharya
- Department of Neural and Behavioral Sciences, Penn State College of Medicine
| | - Brooke Stoltzfus
- Department of Neural and Behavioral Sciences, Penn State College of Medicine
| | - Dongxiao Sun
- Department of Pharmacology, Penn State College of Medicine, Hershey, Pennsylvania, USA
| | - Patricia S Grigson
- Department of Neural and Behavioral Sciences, Penn State College of Medicine
| | - Jennifer E Nyland
- Department of Neural and Behavioral Sciences, Penn State College of Medicine
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6
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Han QQ, Li XY, Wang YX. Dexmedetomidine attenuates lipopolysaccharide-induced inflammation through macrophageal IL-10 expression following α7 nAchR activation. Int Immunopharmacol 2022; 109:108920. [PMID: 35691275 DOI: 10.1016/j.intimp.2022.108920] [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: 04/17/2022] [Revised: 05/22/2022] [Accepted: 05/31/2022] [Indexed: 11/05/2022]
Abstract
Dexmedetomidine, a highly selective α2-adrenoceptor agonist, has been recently reported to alleviate systemic inflammatory response induced by lipopolysaccharide (LPS), in addition to its sedative, analgesic, bradycardic and hypotensive properties. This study aimed to illustrate the molecular mechanisms underlying dexmedetomidine-induced anti-inflammation. In the LPS-pretreated mice, subcutaneous injection of dexmedetomidine reduced the spleen weight as well as serum and spleen expression of proinflammatory cytokines, tumor necrosis factor-α (TNF-α), interleukin (IL)-6 and IL-1β, and increased serum and spleen expression of IL-10, a known anti-inflammatory cytokine. In addition, dexmedetomidine-attenuated proinflammatory cytokine reduction was entirely inhibited by selective α7 nicotinic acetylcholine receptor (nAChR) antagonist methyllycaconitine but not α2-adrenoceptor antagonist yohimbine. Dexmedetomidine also increased macrophageal IL-10 expression in the presence and absence of LPS, which was also attenuated by methyllycaconitine but not yohimbine. Furthermore, the stimulatory effect of dexmedetomidine on the expression of IL-10 was also reduced by the α7 nAChR gene silencer siRNA/α7 nAChR. Lastly, pretreatment with the IL-10 neutralizing antibody reversed dexmedetomidine-supressed expression of proinflammatory cytokines. Our findings illustrate that dexmedetomidine-induced anti-inflammation is through macrophageal expression of IL-10 following activation of α7 nAchRs but not α2-adrenoceptors.
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Affiliation(s)
- Qiao-Qiao Han
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, Shanghai 200240, China; Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, 280 South Chongqing Road, Shanghai 200025, China
| | - Xin-Yan Li
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, Shanghai 200240, China.
| | - Yong-Xiang Wang
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, Shanghai 200240, China.
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7
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Madirazza K, Pecotic R, Pavlinac Dodig I, Valic M, Dogas Z. Blockade of alpha2-adrenergic receptors in the caudal raphe region enhances the renal sympathetic nerve activity response to acute intermittent hypercapnia in rats. Physiol Res 2022; 71:159-169. [PMID: 35043650 DOI: 10.33549/physiolres.934717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The study investigated the role of alpha2-adrenergic receptors of the caudal raphe region in the sympathetic and cardiovascular responses to the acute intermittent hypercapnia (AIHc). Urethane-anesthetized, vagotomized, mechanically ventilated Sprague-Dawley rats (n=38) were exposed to the AIHc protocol (5×3 min, 15 % CO2+50 % O2) in hyperoxic background (50 % O2). alpha2-adrenergic receptor antagonist-yohimbine was applied intravenously (1 mg/kg, n=9) or microinjected into the caudal raphe region (2 mM, n=12) prior to exposure to AIHc. Control groups of animals received saline intravenously (n=7) or into the caudal raphe region (n=10) prior to exposure to AIHc. Renal sympathetic nerve activity (RSNA), mean arterial pressure (MAP) and heart rate (HR) were monitored before exposure to the AIHc protocol (T0), during five hypercapnic episodes (THc1-5) and at 15 min following the end of the last hypercapnic episode (T15). Following intravenous administration of yohimbine, RSNA was significantly greater during THc1-5 and at T15 than in the control group (P<0.05). When yohimbine was microinjected into the caudal raphe region, AIHc elicited greater increases in RSNA during THc1-5 when compared to the controls (THc1: 138.0+/-4.0 % vs. 123.7+/-4.8 %, P=0.032; THc2: 137.1+/-5.0 % vs. 124.1+/-4.5 %, P=0.071; THc3: 143.1+/-6.4 % vs. 122.0±4.8 %, P=0.020; THc4: 146.1+/-6.2 % vs. 120.7+/-5.7 %, P=0.007 and THc5: 143.2+/-7.7 % vs. 119.2+/-7.2 %, P=0.038). During THc1-5, significant decreases in HR from T0 were observed in all groups, while changes in MAP were observed in the group that received yohimbine intravenously. These findings suggest that blockade of the alpha2-adrenegic receptors in the caudal raphe region might have an important role in sympathetic responses to AIHc.
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Affiliation(s)
- K Madirazza
- Department of Neuroscience, University of Split School of Medicine, Split, Croatia.
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8
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Kurzina N, Belskaya A, Gromova A, Ignashchenkova A, Gainetdinov RR, Volnova A. Modulation of Spatial Memory Deficit and Hyperactivity in Dopamine Transporter Knockout Rats via α2A-Adrenoceptors. Front Psychiatry 2022; 13:851296. [PMID: 35401264 PMCID: PMC8990031 DOI: 10.3389/fpsyt.2022.851296] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 02/28/2022] [Indexed: 12/21/2022] Open
Abstract
Attention deficit hyperactivity disorder (ADHD) is manifested by a specific set of behavioral deficits such as hyperactivity, impulsivity, and inattention. The dopamine neurotransmitter system is postulated to be involved in the pathogenesis of ADHD. Guanfacine, a selective α2A-adrenoceptor agonist, is prescribed for ADHD treatment. ADHD also is known to be associated with impairment of multiple aspects of cognition, including spatial memory, however, it remains unclear how modulation of the norepinephrine system can affect these deficits. Hyperdopaminergic dopamine transporter knockout (DAT-KO) rats are a valuable model for investigating ADHD. The DAT-KO rats are hyperactive and deficient in spatial working memory. This work aimed to evaluate the effects of noradrenergic drugs on the fulfillment of spatial cognitive tasks by DAT-KO rats. The rats were tested in the Hebb - Williams maze during training and following noradrenergic drugs administration. The efficiency of spatial orientation was assessed as to how fast the animal finds an optimal way to the goal box. Testing in a new maze configuration allowed us to evaluate the effects of drug administration after the acquisition of the task rules. The behavioral variables such as the distance traveled, the time to reach the goal box, and the time spent in the error zones were analyzed. It has been observed that α2A-adrenoceptor agonist Guanfacine (0.25 mg/kg) had only a minimal inhibitory effect on hyperactivity of DAT-KO rats in the maze but significantly ameliorated their perseverative pattern of activity and reduced the time spent in the error zones. In contrast, α2A-adrenoceptor antagonist Yohimbine, at the dose of 1 mg/kg, increased the distance traveled by DAT-KO rats and elevated the number of perseverative reactions and the time spent in the error zones. Guanfacine caused minimal effects in wild-type rats, while Yohimbine altered several parameters reflecting a detrimental effect on the performance in the maze. These data indicate that modulation of α2A-adrenoceptor activity potently affects both dopamine-dependent hyperactivity and cognitive dysfunctions. Similar mechanisms may be involved in the beneficial effects of Guanfacine on cognitive deficits in ADHD patients. This study further supports the translational potential of DAT-KO rats for testing new pharmacological drugs.
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Affiliation(s)
- Natalia Kurzina
- Institute of Translational Biomedicine, Saint Petersburg State University, Saint Petersburg, Russia
| | - Anastasia Belskaya
- Biological Faculty, Saint Petersburg State University, Saint Petersburg, Russia
| | - Arina Gromova
- Biological Faculty, Saint Petersburg State University, Saint Petersburg, Russia
| | - Alla Ignashchenkova
- Institute of Translational Biomedicine, Saint Petersburg State University, Saint Petersburg, Russia
| | - Raul R Gainetdinov
- Institute of Translational Biomedicine, Saint Petersburg State University, Saint Petersburg, Russia.,Saint Petersburg University Hospital, Saint Petersburg, Russia
| | - Anna Volnova
- Institute of Translational Biomedicine, Saint Petersburg State University, Saint Petersburg, Russia.,Biological Faculty, Saint Petersburg State University, Saint Petersburg, Russia
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9
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Zhou W, Li X, Wang Y, Wang J, Zhang J, Wei H, Peng C, Wang Z, Li G, Li D. Physiological and transcriptomic changes of zebrafish (Danio rerio) embryos-larvae in response to 2-MIB exposure. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126142. [PMID: 34492931 DOI: 10.1016/j.jhazmat.2021.126142] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 04/23/2021] [Accepted: 05/13/2021] [Indexed: 06/13/2023]
Abstract
2-Methylisoborneol (2-MIB), a natural odorous substance, is widely distributed in water environment, but there is a paucity of information concerning its systemic toxicity. Herein, we investigated the effects of 2-MIB exposure on developmental parameters, locomotive behavior, oxidative stress, apoptosis and transcriptome of zebrafish. Zebrafish embryos exposed to different concentrations (0, 0.5, 5 and 42.8 μg/L) of 2-MIB showed no changes in mortality, hatchability, and malformation rate, but the body length of zebrafish larvae was significantly increased in a dose-dependent manner, and accompanied by the changes of growth hormone/insulin-like growth factor (GH/IGF) axis and the hypothalamic-pituitary-thyroid (HPT) axis genes. Moreover, the swimming activity of zebrafish larvae increased, which may be due to the increase of acetylcholinesterase (AChE) activity. Meanwhile, 2-MIB caused oxidative stress and apoptosis in zebrafish larvae by altering the NF-E2-related factor 2 (Nrf2) and mitochondrial signaling pathways, respectively. Transcriptome sequencing assay showed that the phototransduction signaling pathway was significantly enriched, and most of the genes in this pathway exhibited enhanced expression after exposure to 2-MIB. These findings provide an important reference for risk assessment and early warning to 2-MIB exposure.
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Affiliation(s)
- Weicheng Zhou
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China; College of Chemistry, Biology and Environmental Engineering, Xiangnan University, Chenzhou 423000, PR China
| | - Xiaoyu Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yuming Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jinglong Wang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jinli Zhang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Hui Wei
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Chengrong Peng
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Zhicong Wang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Genbao Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Dunhai Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China.
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10
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Mwobobia RM, Kanui TI, Abelson KSP. The effects of clonidine and yohimbine in the tail flick and hot plate tests in the naked mole rat (Heterocephalus glaber). BMC Res Notes 2021; 14:191. [PMID: 34001271 PMCID: PMC8130107 DOI: 10.1186/s13104-021-05607-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 05/08/2021] [Indexed: 11/10/2022] Open
Abstract
Objective The naked mole rat (NMR) (Heterocephalus glaber) is increasingly considered an important biomedical research model for various conditions like hypoxic brain injury, cancer and nociception. This study was designed to investigate the effects of clonidine and yohimbine, an alpha-2 (α2) adrenoceptor agonist and antagonist respectively in the tail flick and hot plate tests. Results A significant difference in tail flick latency was noted between saline control and 30 µg/kg clonidine, which was reduced after administration of 30 µg/kg yohimbine. A significant difference in hot plate latency was also noted between saline control and 30 µg/kg clodinine during the periods 30, 45, 60, 75 and 90 min after administration, and between saline control and 10 µg/kg clonidine during 30 min after administration. The hot plate latency by 30 µg/kg clonidine was also reduced by 30 µg/kg yohimbine during 30 min after administration. Since the tail-flick and hot plate tests mediate the effects at spinal and supraspinal levels respectively, the present study indicates the presence and involvement of noradrenergic receptors in thermal antinociception at spinal and supraspinal levels of the NMR, similar to what has been found in other mammals.
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Affiliation(s)
- R M Mwobobia
- School of Agriculture and Veterinary Sciences, South Eastern Kenya University, P O Box 170-90200, Kitui, Kenya. .,Department of Experimental Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamvej 3B, 2200, Copenhagen, Denmark.
| | - T I Kanui
- School of Agriculture and Veterinary Sciences, South Eastern Kenya University, P O Box 170-90200, Kitui, Kenya
| | - K S P Abelson
- Department of Experimental Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamvej 3B, 2200, Copenhagen, Denmark
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11
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Mwobobia R, Kanui T, Abelson K. Investigation of noradrenergic receptor system in anti-nociception using formalin test in the naked mole rat ( Heterocephalus glaber). Heliyon 2020; 6:e05216. [PMID: 33134574 PMCID: PMC7586093 DOI: 10.1016/j.heliyon.2020.e05216] [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: 08/06/2020] [Revised: 09/15/2020] [Accepted: 10/07/2020] [Indexed: 02/05/2023] Open
Abstract
The naked mole rat (NMR) is a rodent that has gained importance as a biomedical research model for various conditions like hypoxic brain injury, cancer and nociception. This study was designed to investigate possible involvement of the noadrenergic receptor system in antinoception in the NMR, using the alpha-2 adrenergic receptor specific ligands clonidine (agonist) and yohimbine (antagonist) in the formalin test. Formalin test followed 30 min after intraperitoneal administration of ligands or control. A total of 96 naked mole rats were used. A significant reduction in nociceptive behaviours was demonstrated after administration of clonidine in the doses 1,3,10 and 30 μg/kg (n = 8 per group). Doses of clonidine above 30 μg/kg caused loss of motor and proprietion skills exhibited by prostration and failure to turn over when placed on their backs. The antinociception by 3 μg/kg clonidine was reversed by administration of 30 μg/kg of yohimbine. The present study demonstrates that the noradrenergic receptor system is present and involved in formalin test-related antinociceptive mechanisms in the NMR, similar to other mammals. Given the increasing importance of the NMR as a model for pain and nociception, the species may prove useful as an animal model for noradrenergic mechanisms in pain modulation.
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Affiliation(s)
- R.M. Mwobobia
- School of Agriculture and Veterinary Sciences, South Eastern Kenya University, P O Box 170-90200, Kitui, Kenya
- Department of Experimental Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamvej 3B, 2200, Copenhagen, Denmark
| | - T.I. Kanui
- School of Agriculture and Veterinary Sciences, South Eastern Kenya University, P O Box 170-90200, Kitui, Kenya
| | - K.S.P. Abelson
- Department of Experimental Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamvej 3B, 2200, Copenhagen, Denmark
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12
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Walker LC, Kastman HE, Lawrence AJ. Pattern of neural activation following yohimbine‐induced reinstatement of alcohol seeking in rats. Eur J Neurosci 2020; 51:706-720. [DOI: 10.1111/ejn.14431] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/25/2019] [Accepted: 04/23/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Leigh C. Walker
- The Florey Institute of Neuroscience and Mental Health Parkville Victoria Australia
- Florey Department of Neuroscience and Mental Health The University of Melbourne Melbourne Victoria Australia
| | - Hanna E. Kastman
- The Florey Institute of Neuroscience and Mental Health Parkville Victoria Australia
| | - Andrew J. Lawrence
- The Florey Institute of Neuroscience and Mental Health Parkville Victoria Australia
- Florey Department of Neuroscience and Mental Health The University of Melbourne Melbourne Victoria Australia
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13
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Han SJ, Kim M, D'Agati VD, Lee HT. Norepinephrine released by intestinal Paneth cells exacerbates ischemic AKI. Am J Physiol Renal Physiol 2019; 318:F260-F272. [PMID: 31813250 DOI: 10.1152/ajprenal.00471.2019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Small intestinal Paneth cells play a critical role in acute kidney injury (AKI) and remote organ dysfunction by synthesizing and releasing IL-17A. In addition, intestine-derived norepinephrine is a major mediator of hepatic injury and systemic inflammation in sepsis. We tested the hypothesis that small intestinal Paneth cells synthesize and release norepinephrine to exacerbate ischemic AKI. After ischemic AKI, we demonstrated larger increases in portal venous norepinephrine levels compared with plasma norepinephrine in mice, consistent with an intestinal source of norepinephrine release after renal ischemia and reperfusion. We demonstrated that murine small intestinal Paneth cells express tyrosine hydroxylase mRNA and protein, a critical rate-limiting enzyme for the synthesis of norepinephrine. We also demonstrated mRNA expression for tyrosine hydroxylase in human small intestinal Paneth cells. Moreover, freshly isolated small intestinal crypts expressed significantly higher norepinephrine levels after ischemic AKI compared with sham-operated mice. Suggesting a critical role of IL-17A in Paneth cell-mediated release of norepinephrine, recombinant IL-17A induced norepinephrine release in the small intestine of mice. Furthermore, mice deficient in Paneth cells (SOX9 villin Cre mice) have reduced plasma norepinephrine levels after ischemic AKI. Finally, supporting a critical role for norepinephrine in generating ischemic AKI, treatment with the selective α-adrenergic antagonists yohimbine and phentolamine protected against murine ischemic AKI with significantly reduced renal tubular necrosis, inflammation, and apoptosis and less hepatic dysfunction. Taken together, we identify Paneth cells as a critical source of norepinephrine release that may lead to intestinal and liver injury and systemic inflammation after AKI.
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Affiliation(s)
- Sang Jun Han
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, New York
| | - Mihwa Kim
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, New York
| | - Vivette Denise D'Agati
- Department of Pathology, College of Physicians and Surgeons of Columbia University, New York, New York
| | - H Thomas Lee
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, New York
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14
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Groft ML, Normann MC, Nicklas PR, Jagielo-Miller JE, McLaughlin PJ. Biphasic effects of 5-HT1A agonism on impulsive responding are dissociable from effects on anxiety in the variable consecutive number task. Naunyn Schmiedebergs Arch Pharmacol 2019; 392:1455-1464. [DOI: 10.1007/s00210-019-01684-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 06/26/2019] [Indexed: 11/29/2022]
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15
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Select panicogenic drugs and stimuli induce consistent increases in tail skin flushes and decreases in core body temperature. Behav Pharmacol 2018; 30:376-382. [PMID: 30480550 DOI: 10.1097/fbp.0000000000000440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Panic attacks (PAs) are episodes of intense fear or discomfort that are accompanied by a variety of both psychological and somatic symptoms. Panic induction in preclinical models (e.g. rats) has largely been assayed through flight and avoidance behavioral tests and cardiorespiratory activity. Yet, the literature pertaining to PAs shows that thermal sensations (hot flushes/heat sensations and chills) are also a common symptom during PAs in humans. Considering that temperature alterations are objectively measurable in rodents, we hypothesized that select panicogenic drugs and stimuli induce consistent changes in thermoregulation related to hot flushes and chills. Specifically, we challenged male rats with intraperitoneal injections of the GABAergic inverse agonist FG-7142; the α2 adrenoceptor antagonist yohimbine; the serotonin agonist D-fenfluramine, and 20% CO2 (an interoceptive homeostatic challenge). We assayed core body temperature and tail skin temperature using implanted radiotelemetry probes and tail thermistors/thermal imaging camera, respectively, and found that all challenges elicited rapid, high-amplitude (~7-9°C) increase in tail skin temperature and delayed decreases (~1-3°C) in core body temperature. We propose that thermal sensations such as these may be an additional indicator of a panic response in rodents and humans, as these panicogenic compounds or stimuli are known to precipitate PAs in persons with panic disorder.
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16
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Mees L, Fidler J, Kreuzer M, Fu J, Pardue MT, García PS. Faster emergence behavior from ketamine/xylazine anesthesia with atipamezole versus yohimbine. PLoS One 2018; 13:e0199087. [PMID: 30372437 PMCID: PMC6205597 DOI: 10.1371/journal.pone.0199087] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 10/04/2018] [Indexed: 11/19/2022] Open
Abstract
Recent interest in reversal of the hypnotic effects of anesthesia has mainly focused on overcoming a surge in GABA-mediated inhibitory signaling through activation of subcortical arousal circuits or antagonizing GABA receptors. Here we examine the reversal of anesthesia produced from non-GABA agents ketamine/xylazine and the effects of antagonists of adrenoreceptors. These antagonists vary in selectivity and produce temporally unique waking behavior post-anesthesia. We compared two antagonists with differential selectivity for α1- vs. α2-receptors, yohimbine (YOH, 1:40 selectivity) and atipamezole (ATI, 1:8500). Adult mice received intraperitoneal injections of either YOH (4.3 mg/kg), ATI (0.4 mg/kg), or saline after achieving sustained loss of righting following injection of ketamine/xylazine (ketamine: 65.0 mg/kg; xylazine: 9.9 mg/kg). Behaviors indicative of the post-anesthesia, re-animation sequence were carefully monitored and the timing of each behavior relative to anesthesia induction was compared. Both YOH and ATI hastened behaviors indicative of emergence, but ATI was faster than YOH to produce certain behaviors, including whisker movement (YOH: 21.9±1.5 min, ATI: 17.5±0.5 min, p = 0.004) and return of righting reflex (RORR) (YOH: 40.6±8.8 min, ATI: 26.0±1.2 min, p<0.001). Interestingly, although YOH administration hastened early behavioral markers of emergence relative to saline (whisking), the completion of the emergence sequence (time from first marker to appearance of RORR) was delayed with YOH. We attribute this effect to antagonism of α1 receptors by yohimbine. Also notable was the failure of either antagonist to hasten the re-establishment of coordinated motor behavior (e.g., attempts to remove adhesive tape on the forepaw placed during anesthesia) relative to the end of emergence (RORR). In total, our work suggests that in addition to pharmacokinetic effects, re-establishment of normal waking behaviors after anesthesia involves neuronal circuits dependent on time and/or activity.
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Affiliation(s)
- Lukas Mees
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Decatur, Georgia, United States of America
| | - Jonathan Fidler
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Decatur, Georgia, United States of America
- Department of Anesthesiology, Emory University, Atlanta, Georgia, United States of America
| | - Matthias Kreuzer
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Decatur, Georgia, United States of America
- Department of Anesthesiology, Emory University, Atlanta, Georgia, United States of America
- Department of Anesthesiology and Critical Care, Technical University of Munich, Munich, Germany
| | - Jieming Fu
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Decatur, Georgia, United States of America
| | - Machelle T. Pardue
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Decatur, Georgia, United States of America
- Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia, United States of America
| | - Paul S. García
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Decatur, Georgia, United States of America
- Department of Anesthesiology, Emory University, Atlanta, Georgia, United States of America
- * E-mail:
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17
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Skinner CM, Miousse IR, Ewing LE, Sridharan V, Cao M, Lin H, Williams DK, Avula B, Haider S, Chittiboyina AG, Khan IA, ElSohly MA, Boerma M, Gurley BJ, Koturbash I. Impact of obesity on the toxicity of a multi-ingredient dietary supplement, OxyELITE Pro™ (New Formula), using the novel NZO/HILtJ obese mouse model: Physiological and mechanistic assessments. Food Chem Toxicol 2018; 122:21-32. [PMID: 30282009 DOI: 10.1016/j.fct.2018.09.067] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 09/18/2018] [Accepted: 09/28/2018] [Indexed: 02/07/2023]
Abstract
Herbal dietary supplement (HDS)-induced hepato- and cardiotoxicity is an emerging clinical problem. In this study, we investigated the liver and heart toxicity of HDS OxyELITE-PRO™ New Formula (OEP-NF), a dietary supplement marketed for weight loss and performance enhancement that was recently withdrawn from the market. Using a novel NZO/HlLtJ obese mouse model, we demonstrated that administration of clinically relevant mouse equivalent doses (MED) of OEP-NF produced cardio- and hepatotoxic risks following both short- and long-term administration schedules. Specifically, gavaging female NZO/HlLtJ with up to 2X MED of OEP-NF resulted in 40% mortality within two weeks. Feeding mice with either 1X or 3X MED of OEP-NF for eight weeks, while not exhibiting significant effects on body weights, significantly altered hepatic gene expression, increased the number of apoptotic and mast cells in the heart and affected cardiac function. The degree of toxicity in NZO/HlLtJ mice was higher than that observed previously in non-obese CD-1 and B6C3F1 strains, suggesting that an overweight/obese condition can sensitize mice to OEP-NF. Adverse health effects linked to OEP-NF, together with a number of other hepato- and cardiotoxicity cases associated with HDS ingestion, argue strongly for introduction of quality standards and pre-marketing safety assessments for multi-ingredient HDS.
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Affiliation(s)
- Charles M Skinner
- Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA; Center for Dietary Supplement Research, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA.
| | - Isabelle R Miousse
- Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA.
| | - Laura E Ewing
- Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA; Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA.
| | - Vijayalakshmi Sridharan
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, 72223, USA.
| | - Maohua Cao
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, 72223, USA.
| | - Haixia Lin
- Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA.
| | - D Keith Williams
- Department of Biostatistics, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA.
| | - Bharathi Avula
- National Center for Natural Product Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA.
| | - Saqlain Haider
- National Center for Natural Product Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA.
| | - Amar G Chittiboyina
- National Center for Natural Product Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA.
| | - Ikhlas A Khan
- National Center for Natural Product Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA.
| | - Mahmoud A ElSohly
- ElSohly Laboratories, Inc. (ELI), Phyto Chemical Services, Inc. (PSI), 5 Industrial Park Drive, Oxford, MS 38655, USA.
| | - Marjan Boerma
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, 72223, USA; Center for Dietary Supplement Research, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA.
| | - Bill J Gurley
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, 72223, USA; Center for Dietary Supplement Research, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA.
| | - Igor Koturbash
- Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA; Center for Dietary Supplement Research, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA.
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18
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Pitzer C, La Porta C, Treede RD, Tappe-Theodor A. Inflammatory and neuropathic pain conditions do not primarily evoke anxiety-like behaviours in C57BL/6 mice. Eur J Pain 2018; 23:285-306. [PMID: 30098102 DOI: 10.1002/ejp.1303] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 08/04/2018] [Accepted: 08/05/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Chronic pain is often accompanied by comorbidities like anxiety and depression. The temporal correlations, as well as the underlying mechanisms of these reciprocal correlations, are unclear. Moreover, preclinical studies examining emotional behaviour are very controversial, and a chronological analysis of anxiety-like behaviour in mouse pain models considering both genders has not been performed so far. METHODS We used several behavioural tests to assess and validate anxiety-like behaviour in complete Freund's adjuvant (CFA) and spared nerve injury (SNI) pain models in C57BL/6 mice. Among these were the elevated plus maze test, open field test, hole-board test and light-dark test. Additionally, we included a late stage analysis of depression-like behaviour using the forced swim test. All tests were applied once for each cohort of mice. Importantly, we used C57BL/6N mice of both genders; we investigated the effect of social isolation, the impact of pain induction to either the right or left hind limb and also investigated C57BL/6J mice. RESULTS The validity of test conditions was confirmed using the anxiogenic drugs Yohimbine and Pentylenetetrazol. Anxiety-like behaviour was analysed throughout the time period when mice exhibited hypersensitivity to mechanical stimuli. We did not observe any consistent alteration in anxiety-like behaviour at any of the investigated time points between 1 and 14 days following CFA-induced inflammation or 3 and 84 days following SNI surgery using different behavioural tests. CONCLUSIONS Inflammatory and neuropathic pain conditions do not primarily evoke anxiety- and depression-like behavioural alterations within the herein investigated time period. SIGNIFICANCE Anxiety-like behaviour is not primarily altered following CFA and SNI in C57BL6 mice, irrespective of the gender, mouse sub-strain, housing conditions or affected body side within the herein investigated time period.
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Affiliation(s)
- Claudia Pitzer
- Interdisciplinary Neurobehavioral Core (INBC), University of Heidelberg, Heidelberg, Germany
| | - Carmen La Porta
- Pharmacology Institute, University of Heidelberg, Heidelberg, Germany
| | - Rolf-Detlef Treede
- Department of Neurophysiology, Centre for Biomedicine and Medical Technology Mannheim, Heidelberg University, Mannheim, Germany
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19
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Aragão GF, de Moraes Filho MO, Bandeira PN, Junior APF, Oliveira de YIS, Balacó CFA, de Moraes MEA. Monoaminergic Involvement in Decreased Locomotor Activity of Mice Treated with α and β-amyrin from Protium heptaphyllum. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A triterpenic mixture of α and β-amyrin (AMY) extracted from Protium heptaphyllum has demonstrated several pharmacological effects, including activity in the central nervous system. The aim of this study was to evaluate the effect of AMY administration on locomotor activity of mice by the open field test using some monoaminergic agonists and antagonists and the cerebral cortex levels of monoamines and their major metabolites by high-performance liquid chromatography. Mice were treated acutely with AMY at doses of 1, 2.5 and 5 mg/kg given intraperitoneally and with the pharmacological agents and placed in open field test, then the animals were sacrificed and the cerebral cortex extracted, and monoamines were assayed in tissue homogenates. AMY at 1, 2.5 and 5 mg/kg decreased locomotor activity of animals by 25, 31 and 39%, respectively in the open field test. Ondasentron, doxazosin, oxymetazoline and clonidine did not reverse the inhibitory effect of 5 mg/kg AMY. Venlafaxine and yohimbine reversed the inhibitory effect of 5 mg AMY. In the cortex, the 5-HT and 5-HIAA were significantly reduced by the administration of AMY. NE and HVA were also reduced with 2.5 and 5 mg/kg AMY, while Dopamine and DOPAC were not increased with AMY. In conclusion, AMY decreased locomotor activity of animals accompanied by a decrease in 5-HT and NE levels in the cerebral cortex, this locomotor effect is reversed by drug that blocker the α-2-adrenoreceptor.
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Affiliation(s)
- Gislei F. Aragão
- Health Sciences Center. University of State of Ceará, Fortaleza, Brazil
- Drug Discovery and Development Center (NPDM). Federal University of Ceará, Fortaleza, Brazil
| | | | - Paulo N. Bandeira
- Center for Exact Sciences and Technology. State University of Acarau Valley, Sobral, Brazil
| | - Antônio P. Frota Junior
- Drug Discovery and Development Center (NPDM). Federal University of Ceará, Fortaleza, Brazil
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20
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Li F, Lin J, Liu X, Li W, Ding Y, Zhang Y, Zhou S, Guo N, Li Q. Characterization of the locomotor activities of zebrafish larvae under the influence of various neuroactive drugs. ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:173. [PMID: 29951495 DOI: 10.21037/atm.2018.04.25] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background Behavioral changes in animals reflect functional changes in their central nervous system. Neuroactive drugs that act on different neural pathways can induce specific behavioral responses; therefore, it is possible to infer the activities of neuroactive drugs by studying the behavioral changes induced by drugs of interest in animals. Methods In this study, AB strain zebrafish larvae at 7 days post fertilization (dpf) were treated with different concentrations of drugs that act on different neural pathways. Changes in the swimming distances of zebrafish larvae under different illumination conditions and the differences in locomotor activities between light and dark conditions (lighting motor index) were analyzed. Results Among the drugs studied, different concentrations of sulpiride had no effect on larval locomotor activity either under light or dark conditions. Progressively decreased spontaneous movements were observed in zebrafish larvae treated with increasing doses of MK-801 and valproic acid. With increasing concentrations of pentylenetetrazole and yohimbine, the spontaneous movement of larval zebrafish presented a bell-shaped response. When the illumination changed from light to dark, zebrafish larvae not treated with drugs demonstrated increased locomotor activities. However, high levels of yohimbine, pentylenetetrazole decreased the degree of change in the lighting motor index. Conclusions In conclusion, drugs that affect different neural pathways exert different influences on the locomotor activities of zebrafish larvae. This study presents an initial effort to establish a framework that correlates the drug activities and the behavioral responses of zebrafish larvae under drug treatments, which may provide a potential identification of the pathways of novel drugs with neurological activities through their behavioral influences.
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Affiliation(s)
- Fei Li
- Translational Medical Center for Development and Disease, Institute of Pediatrics, Shanghai Key Laboratory of Birth Defect, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Jia Lin
- Translational Medical Center for Development and Disease, Institute of Pediatrics, Shanghai Key Laboratory of Birth Defect, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Xiuyun Liu
- Translational Medical Center for Development and Disease, Institute of Pediatrics, Shanghai Key Laboratory of Birth Defect, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Wenhui Li
- Department of Neurology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Yifeng Ding
- Department of Neurology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Yunjian Zhang
- Department of Neurology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Shuizhen Zhou
- Department of Neurology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Ning Guo
- Center for Chinese Medical Therapy and Systems Biology, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Qiang Li
- Translational Medical Center for Development and Disease, Institute of Pediatrics, Shanghai Key Laboratory of Birth Defect, Children's Hospital of Fudan University, Shanghai 201102, China
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Uchida M, Kobayashi O. Novel effect of α-lactalbumin on the yohimbine-induced hot flush increase of the tail skin temperature in ovariectomized rats. Biosci Biotechnol Biochem 2018; 82:862-868. [PMID: 29504865 DOI: 10.1080/09168451.2018.1444976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
5-Hydroxytryptamine (5-HT) and noradrenaline have been thought to play important roles in the mechanism of hot flush. Then, to clarify the relation between serotonergic and adrenergic nervous systems on the mechanism of hot flush, the effect of paroxetine, 5-HT reuptake inhibitor (SSRI) was evaluated on the yohimbine-induced hot flush increase of tail skin temperature in ovariectomized female rats. Yohimbine (adrenaline α2 antagonist) significantly increased the tail skin temperature in course of time. Clonidine (adrenaline α2 agonist) significantly attenuated this effect. Paroxetine also significantly inhibited the increase of tail skin temperature by yohimbine. α-Lactalbumin having SSRI activity in vitro study also significantly inhibited the increase of tail skin temperature, but not significantly decreased the initial temperature. This difference may explain the different mechanism between paroxetine (SSRI) and α-lactalbumin, suggesting new mechanism of hot flush.
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Affiliation(s)
- Masayuki Uchida
- Food Science & Technology Research Laboratories, R&D Division, Meiji Co., Ltd., Tokyo, Japan
| | - Orie Kobayashi
- Food Science & Technology Research Laboratories, R&D Division, Meiji Co., Ltd., Tokyo, Japan
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22
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Radioligand binding analysis of α 2 adrenoceptors with [ 11C]yohimbine in brain in vivo: Extended Inhibition Plot correction for plasma protein binding. Sci Rep 2017; 7:15979. [PMID: 29167492 PMCID: PMC5700124 DOI: 10.1038/s41598-017-16020-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 10/23/2017] [Indexed: 11/23/2022] Open
Abstract
We describe a novel method of kinetic analysis of radioligand binding to neuroreceptors in brain in vivo, here applied to noradrenaline receptors in rat brain. The method uses positron emission tomography (PET) of [11C]yohimbine binding in brain to quantify the density and affinity of α2 adrenoceptors under condition of changing radioligand binding to plasma proteins. We obtained dynamic PET recordings from brain of Spraque Dawley rats at baseline, followed by pharmacological challenge with unlabeled yohimbine (0.3 mg/kg). The challenge with unlabeled ligand failed to diminish radioligand accumulation in brain tissue, due to the blocking of radioligand binding to plasma proteins that elevated the free fractions of the radioligand in plasma. We devised a method that graphically resolved the masking of unlabeled ligand binding by the increase of radioligand free fractions in plasma. The Extended Inhibition Plot introduced here yielded an estimate of the volume of distribution of non-displaceable ligand in brain tissue that increased with the increase of the free fraction of the radioligand in plasma. The resulting binding potentials of the radioligand declined by 50–60% in the presence of unlabeled ligand. The kinetic unmasking of inhibited binding reflected in the increase of the reference volume of distribution yielded estimates of receptor saturation consistent with the binding of unlabeled ligand.
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Huang YL, Cui SY, Cui XY, Cao Q, Ding H, Song JZ, Hu X, Ye H, Yu B, Sheng ZF, Wang ZJ, Zhang YH. Tetrandrine, an alkaloid from S. tetrandra exhibits anti-hypertensive and sleep-enhancing effects in SHR via different mechanisms. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:1821-1829. [PMID: 27912885 DOI: 10.1016/j.phymed.2016.10.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 09/30/2016] [Accepted: 10/26/2016] [Indexed: 05/18/2023]
Abstract
BACKGROUND Sleep disorders have been found to be associated with hypertension in both cross-sectional and longitudinal epidemiological studies. Tetrandrine, a major component of Stephania tetrandra, is well known as an antihypertensive agent. The anti-hypertension mechanism mainly relies on its L-type calcium channel blocking property. In the previous study, tetrandrine revealed both anti-hypertension and hypnotic effects in spontaneously hypertensive rats (SHRs). PURPOSE This study aims to elucidate whether the antihypertensive mechanism of tetrandrine in SHRs is relevant to its hypnotic effect. DESIGN/METHODS Sleep-wake behavior of the SHRs was detected by electroencephalography (EEG) and electromyography (EMG) recordings. Blood pressure was measured by noninvasive blood pressure tail cuff test. Immunohistochemistry was performed to evaluate the noradrenergic neuronal activity. The level of norepinephrine (NE) was detected by HPLC-ECD. RESULTS Amlodipine (100mg/kg, i.g.), the well-known L-type Ca2+ channel blockers (CCBs) exhibited remarkable antihypertensive activities in SHRs, but did not show effects on sleep of SHRs. Tetrandrine (30 and 60mg/kg/day, i.g.) significantly suppressed blood pressure of SHRs. Meanwhile, tetrandrine (60mg/kg/day, i.g.) remarkably increased non-rapid eye movement sleep (NREMS) time, bouts and mean duration. The hypnotic effect of tetrandrine was potentiated by prazosin (0.5mg/kg, i.p.) but attenuated by yohimbine (2mg/kg, i.p.). Administration of tetrandrine (60mg/kg/day, i.g.) not only significantly decreased c-Fos positive ratio of noradrenergic neurons in the locus coeruleus (LC), but also significantly decrease NE in the endogenous sleep-wake regulating pathways including LC, hypothalamus and ventrolateral preoptic nucleus (VLPO). CONCLUSION In spite of a good potency in blocking L-type Ca2+ channel, the hypnotic effects of tetrandrine may be related to its suppressing effects on the noradrenergic system other than to block calcium channels. As a multi-targets drug, tetrandrine might be favorable to the hypertension patients who suffered poor sleep.
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Affiliation(s)
- Yuan-Li Huang
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China
| | - Su-Ying Cui
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China
| | - Xiang-Yu Cui
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China
| | - Qing Cao
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China
| | - Hui Ding
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China
| | - Jin-Zhi Song
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China
| | - Xiao Hu
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China
| | - Hui Ye
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China
| | - Bin Yu
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China
| | - Zhao-Fu Sheng
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China
| | - Zi-Jun Wang
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China
| | - Yong-He Zhang
- Department of pharmacology, Peking University, School of Basic Medical Science, 38 Xueyuan Road, Beijing, 100191, China.
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Ferreira RB, de Oliveira MG, Antunes E, Almeida WP, Ibrahim BM, Abdel-Rahman AA. New 2-Aminothiazoline derivatives lower blood pressure of spontaneously hypertensive rats (SHR) via I 1-imidazoline and alpha-2 adrenergic receptors activation. Eur J Pharmacol 2016; 791:803-810. [PMID: 27729248 DOI: 10.1016/j.ejphar.2016.10.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 10/06/2016] [Accepted: 10/07/2016] [Indexed: 01/20/2023]
Abstract
2-Aminothiazolines share an isosteric relationship with imidazolines and oxazolines with antihypertensive activity mainly mediated by the imidazoline I1-receptor. In the present work, we have prepared five aminothiazolines, following a previously described synthetic pathway. Aminothiazolines derived from dicyclopropylmethylamine (ATZ1) and cyclohexylamine (3) are unprecedented in the literature. Competitive radioligand assay was carried out with all synthetic compounds, and the I1 receptor affinity in comparison to rilmenidine in PC12 cells was determined. Surprisingly, the rilmenidine isoster (ATZ1) showed no I1-receptor interaction. Diethyl (ATZ4) and 2-ethyl-hexylamine (ATZ5) derivatives bind to the receptor with 11.98 and 10.94nmol/l, respectively. These compounds were selected for in vivo experiments. Both compounds reduced the blood pressure of spontaneously hypertensive rats (SHR). The hypotensive effect of these compounds was abrogated in the presence of α2 adrenergic (yohimbine) and I1 (efaroxan) receptor antagonists suggesting that both aminothiazolines bind to the adrenergic and imidazoline receptors. Lipinski's descriptors of the synthesized aminothiazolines were calculated and are similar to the known imidazoline I1 receptor ligands. 3D-Similarity between ATZ5 and agmatine, the natural imidazoline receptor ligand, was also observed.
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Affiliation(s)
- Renan B Ferreira
- Institute of Chemistry, University of Campinas, PO Box 6194, ZC 13083-970 Campinas, SP, Brazil
| | - Mariana G de Oliveira
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas, Campinas, SP, Brazil
| | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas, Campinas, SP, Brazil
| | - Wanda P Almeida
- Faculty of Pharmaceutical Sciences, University of Campinas, PO Box 6029, ZC 13083-859 Campinas, SP, Brazil.
| | - Badr M Ibrahim
- Department of Pharmacology and Toxicology, The Brody School of Medicine, East Carolina University, Greenville, NC 27834, USA
| | - Abdel A Abdel-Rahman
- Department of Pharmacology and Toxicology, The Brody School of Medicine, East Carolina University, Greenville, NC 27834, USA
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Baclofen blocks yohimbine-induced increases in ethanol-reinforced responding in rats. Pharmacol Biochem Behav 2016; 144:20-5. [PMID: 26921456 DOI: 10.1016/j.pbb.2016.02.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 02/19/2016] [Accepted: 02/22/2016] [Indexed: 12/25/2022]
Abstract
Chronic or repeated stress increases alcohol consumption. The GABA-B agonist baclofen decreases alcohol consumption and may be most effective for individuals with comorbid anxiety/stress disorders. The present study sought to determine if baclofen blocks stress-induced increases in ethanol self-administration as modeled by repeated yohimbine injections in rats. Rats were trained to respond for 15% w/v ethanol in operant chambers using a method that applies neither water deprivation nor saccharin/sucrose fading. Following training, the rats received 6 injections of 1.25mg/kg yohimbine were given immediately prior to the operant sessions during a 2-week time period. Subsequently, some rats were pair-matched to receive either 1.25mg/kg yohimbine or saline in the presence of 0.3, 1, and 3mg/kg baclofen prior to sessions. Acquisition of ethanol self-administration was poor. Pretreatment with yohimbine consistently increased responding across repeated injections. Yohimbine's effect on ethanol intake unexpectedly diverged from the effect on responding as the rats failed to consume all reinforcers earned. Smaller doses of baclofen paired with saline injections had no effect on ethanol responding; only 3mg/kg baclofen reduced ethanol self-administration. The smallest baclofen dose of 0.3mg/kg failed to block the yohimbine-induced increase in self-administration. The large baclofen dose of 3mg/kg continued to suppress ethanol self-administration when given with yohimbine. Baclofen 1mg/kg blocked the effect of yohimbine even though it had no effect when given in the absence of yohimbine. Exposure to high ethanol concentrations may induce self-administration only in certain conditions. The dissociation between responding and intake suggests that repeated yohimbine injections may initiate other behavioral or physiological mechanisms that confound its effects as a pharmacological stressor. Furthermore, an optimal baclofen dose range may specifically protect against stress-induced alcohol self-administration, highlighting a specific contribution of GABA-B receptors and a potential therapeutic efficacy of GABA-B agonists at a non-sedating dose.
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