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Zaia CTBV, Uchôa ET, Santos AATD, Ribeiro RCDA, Batista ACS, Crespigio J, Utida L, Moura GB, Brownlow ML, Garnica-Siqueira MC, Reis WL, Antunes-Rodrigues J, Zaia DAM. Vasoactive intestinal peptide promotes hypophagia and metabolic changes: role of paraventricular hypothalamic nucleus and nitric oxide. Brain Res Bull 2022; 189:102-110. [PMID: 36029978 DOI: 10.1016/j.brainresbull.2022.08.021] [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: 01/31/2022] [Revised: 08/03/2022] [Accepted: 08/21/2022] [Indexed: 11/02/2022]
Abstract
Vasoactive intestinal peptide (VIP), a neuromodulator present in the hypothalamus, plays an important role in the regulation of food intake. Paraventricular nucleus of the hypothalamus (PVN) is involved in ingestive responses and regulates the nitric oxide (NO) pathway. The main objectives of this study were to investigate metabolic changes established after different doses and times of VIP microinjection on the PVN, and the effect of VIP microinjection on the PVN on food intake and the role of NO in this control. In anesthetized rats, increased blood plasma glucose and insulin levels were observed following the doses of 40 and 80ng/g of body weight. At the dose of 40ng/g, VIP promoted hyperglycemia and hyperinsulinemia 5, 10, and 30min after microinjection, and increased free fatty acids and total lipids plasma levels after 5min, and triglycerides after 10min. In awake animals, once again, VIP administration increased plasmatic levels of glucose, free fatty acids, corticosterone, and insulin 10min after the microinjection. Moreover, VIP promoted hypophagia in the morning and night periods, and L-arginine (L-Arg) and monosodium glutamate (MSG) or a combination of both attenuated VIP-induced reduction on food intake. In addition, nitrate concentration in the PVN was decreased after VIP microinjection. Our data show that the PVN participates in the anorexigenic and metabolic effects of VIP, and that VIP-induced hypophagia is likely mediated by reduction of NO.
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Affiliation(s)
- Cássia Thaïs Bussamra Vieira Zaia
- Laboratório de Fisiologia Neuroendócrina e Metabolismo, Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina; Londrina, PR, Brazil; Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil.
| | - Ernane Torres Uchôa
- Laboratório de Fisiologia Neuroendócrina e Metabolismo, Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina; Londrina, PR, Brazil; Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil.
| | | | - Rachel Cezar de Andrade Ribeiro
- Laboratório de Fisiologia Neuroendócrina e Metabolismo, Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina; Londrina, PR, Brazil
| | - Ana Carolina Seidel Batista
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Jefferson Crespigio
- Laboratório de Fisiologia Neuroendócrina e Metabolismo, Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina; Londrina, PR, Brazil
| | - Lawrence Utida
- Laboratório de Fisiologia Neuroendócrina e Metabolismo, Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina; Londrina, PR, Brazil
| | - Galiano Brazuna Moura
- Laboratório de Fisiologia Neuroendócrina e Metabolismo, Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina; Londrina, PR, Brazil
| | - Milene Lara Brownlow
- Laboratório de Fisiologia Neuroendócrina e Metabolismo, Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina; Londrina, PR, Brazil
| | | | - Wagner Luis Reis
- Departamento de Ciências Fisiológicas, Universidade Federal de Santa Catarina; Florianópolis, SC, Brazil
| | - Jose Antunes-Rodrigues
- Departamento de Fisiologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo; Ribeirão Preto, SP, Brazil
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Martins AB, Brownlow ML, Araújo BB, Garnica-Siqueira MC, Zaia DAM, Leite CM, Zaia CTBV, Uchoa ET. Arcuate nucleus of the hypothalamus contributes to the hypophagic effect and plasma metabolic changes induced by vasoactive intestinal peptide and pituitary adenylate cyclase-activating polypeptide. Neurochem Int 2022; 155:105300. [DOI: 10.1016/j.neuint.2022.105300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 01/20/2022] [Accepted: 01/31/2022] [Indexed: 11/30/2022]
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Zhu J, Tong H, Ye X, Zhang J, Huang Y, Yang M, Zhong L, Gong Q. The Effects of Low-Dose and High-Dose Decoctions of Fructus aurantii in a Rat Model of Functional Dyspepsia. Med Sci Monit 2020; 26:e919815. [PMID: 32248203 PMCID: PMC7156881 DOI: 10.12659/msm.919815] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 11/22/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Fructus aurantii is a flavonoid derived from Citrus aurantium (bitter orange) that is used in traditional Chinese medicine (TCM) to treat gastric motility disorders. This study aimed to investigate the effects of low-dose and high-dose decoctions of Fructus aurantii in a rat model of functional dyspepsia (FD). MATERIAL AND METHODS Sprague-Dawley rats (n=90) were divided into nine study groups: the control group, the FD model group, the domperidone-treated (Domp) group, the low-dose raw Fructus aurantii (FA-L) group, the high-dose raw Fructus aurantii (FA-H) group, the low-dose Fructus aurantii with stir-fried wheat bran (Bran-L) group, the high-dose Fructus aurantii with stir-fried wheat bran (Bran-H) group, the low-dose Fructus aurantii with stir-fried wheat bran and honey (Honey-L) group, and the high-dose Fructus aurantii with stir-fried wheat bran and honey (Honey-H) group. The FD rat model was established by semi-starvation, followed by tail damping, stimulation, and forced exercise with fatigue. Change in weight, rate of gastric emptying and intestinal propulsion, and serum levels of leptin, motilin, vasoactive intestinal peptide (VIP), gastrin, calcitonin gene-related peptide (CGRP), ghrelin, and cholecystokinin were compared between the groups. RESULTS In the FD model group, weight, rate of gastric emptying and intestinal propulsion significantly decreased, the expression of leptin, VIP and CGRP increased, and expression of motilin, gastrin, ghrelin, and cholecystokinin significantly decreased. Treatment with low-dose Fructus aurantii with stir-fried wheat bran significantly reversed these effects. CONCLUSIONS In the rat model of FD, low-dose Fructus aurantii with stir-fried wheat bran increased gastrointestinal motility and gastrointestinal hormone levels.
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Garnica-Siqueira MC, Martins AB, Dos Stopa LR, de Souza CF, Zaia DAM, Leite CM, Zaia CTBV, Uchôa ET. Adrenalectomy impairs vasoactive intestinal peptide-induced changes in food intake and plasma parameters. Endocrine 2019; 65:675-682. [PMID: 31325084 DOI: 10.1007/s12020-019-02012-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 07/09/2019] [Indexed: 12/18/2022]
Abstract
PURPOSE The aim of this study is to evaluate the effects of adrenalectomy (ADX) and glucocorticoid in the changes induced by intracerebroventricular (ICV) administration of vasoactive intestinal peptide (VIP) on food intake and plasma parameters, as well as VIP receptor subtype 2 (VPAC2) mRNA expression in different hypothalamic nuclei of male rats. METHODS Male Wistar rats (260-280 g) were subjected to ADX or sham surgery, 7 days before the experiments. Half of ADX animals received corticosterone (ADX + CORT) in the drinking water. Animals with 16 h of fasting received ICV microinjection of VIP or saline (0.9% NaCl). After 15 min: (1) animals were fed, and the amount of food ingested was quantified for 120 min; or (2) animals were euthanized and blood was collected for biochemical measurements. Determination of VPAC2 mRNA levels in LHA, ARC, and PVN was performed from animals with microinjection of saline. RESULTS VIP treatment promoted the anorexigenic effect, which was not observed in ADX animals. Microinjection of VIP also induced an increase in blood plasma glucose and corticosterone levels, and a reduction in free fatty acid plasma levels, but adrenalectomy abolished these effects. In addition, adrenalectomy reduced mRNA expression of VPAC2 in the lateral hypothalamic area and arcuate nucleus, but not in the paraventricular nucleus. CONCLUSIONS These results suggest that adrenal glands are required for VIP-induced changes in food intake and plasma parameters, and these responses are associated with reduction in the expression of VPAC2 in the hypothalamus after adrenalectomy.
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Affiliation(s)
- Marcela Cristina Garnica-Siqueira
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Andressa Bussetti Martins
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Larissa Rugila Dos Stopa
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Camila Franciele de Souza
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Dimas Augusto Morozin Zaia
- Department of Chemistry, Laboratory of Prebiotic Chemistry, State University of Londrina, Londrina, PR, Brazil
| | | | - Cássia Thaïs Bussamra Vieira Zaia
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil.
| | - Ernane Torres Uchôa
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil.
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Zhang YF, Zhang J, Sun CC, Tang CY, Sun GY, Luo WJ, Zhou Y, Guan CX. Vasoactive intestinal peptide inhibits the activation of murine fibroblasts and expression of interleukin 17 receptor C. Cell Biol Int 2019; 43:770-780. [PMID: 31026365 DOI: 10.1002/cbin.11151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 04/01/2019] [Accepted: 04/24/2019] [Indexed: 12/11/2022]
Abstract
Acute respiratory distress syndrome (ARDS) is an acute, severe, and refractory pulmonary inflammation with high morbidity and mortality. Excessive activation of fibroblast during the fibroproliferative phase plays a pivotal role in the prognosis of ARDS. Our previous study demonstrated that the vasoactive intestinal peptide (VIP) is mediated by lentivirus attenuates lipopolysaccharide (LPS)-induced ARDS in a murine model, and VIP inhibits the release of interleukin-17A (IL-17A) from activation macrophages. However, the effects of VIP on the activation of murine fibroblast and expression of IL-17 receptor (IL-17R) in ARDS remain unclear. Here, a mouse model of ARDS was established by an intratracheal injection of LPS. We found that the gene expression of col3a1 and hydroxyproline contents in the lungs were significantly increased 24 h after LPS injection. IL-17RC rather than IL-17RA was increased in the lungs of mice with ARDS. In vitro, LPS activated NIH3T3 cells, which was suppressed by VIP in a dose-dependent manner. In detail, VIP reduced the hydroxyproline content and col3a1 messenger RNA induced by LPS in NIH3T3 cells, as well as the expression of α-smooth muscle actin. Furthermore, we found that VIP inhibited the expression of IL-17R in the lungs of mice with ARDS and NIH3T3 cells stimulated with LPS, which was partly inhibited by antagonists of protein kinase A and protein kinase C. Taken together, our results demonstrated that VIP inhibited the activation of fibroblast via downregulation of IL-17RC, which may contribute to the protective effects of VIP against ARDS in mice.
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Affiliation(s)
- Yan-Feng Zhang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Department of Cardiovascular Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jun Zhang
- Department of Physiology, Hunan University of Medicine, Huaihua, Hunan, China
| | - Chen-Chen Sun
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Chun-Yan Tang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Guo-Ying Sun
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Wan-Jun Luo
- Department of Cardiovascular Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yong Zhou
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Cha-Xiang Guan
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
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Garnica-Siqueira MC, Martins AB, Zaia DAM, Leite CM, Uchôa ET, Zaia CTBV. Corticotrophin-releasing factor mediates vasoactive intestinal peptide-induced hypophagia and changes in plasma parameters. Horm Behav 2018; 105:138-145. [PMID: 30138609 DOI: 10.1016/j.yhbeh.2018.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 07/26/2018] [Accepted: 08/18/2018] [Indexed: 01/13/2023]
Abstract
Vasoactive intestinal peptide (VIP) and corticotrophin-releasing factor (CRF) are anorexigenic neuropeptides that act in the hypothalamus to regulate food intake. Intracerebroventricular (ICV) microinjection of VIP promotes increased plasma adrenocorticotrophic hormone (ACTH) and corticosterone, indicating that VIP activates hypothalamic-pituitary-adrenal axis. The aim of this study was to evaluate the interaction between VIP and CRF, by verifying the effects of ICV administration of VIP on the activity of neurons and CRF mRNA expression in paraventricular nucleus of hypothalamus (PVN). In addition, it was evaluated the effects of pretreatment with CRF type 1 receptor (CRFR1) antagonist (Antalarmin, ANT) or CRF type 2 receptor (CRFR2) antagonist (Antisauvagine-30, AS30) on VIP-induced changes on food intake and plasma parameters of male rats. Compared to Saline group, VIP increased not only the number of Fos-related antigens (FRA)-immunoreactive neurons in the PVN but also CRF mRNA levels in this nucleus. Both ANT and AS30 treatment attenuated the inhibition of food intake promoted by VIP, ANT showing a more pronounced effect. Both antagonists also attenuated VIP-induced reduction and enhancement of free fatty acids and corticosterone plasma levels, respectively, and only AS30 was able to attenuate the hyperglycemia. These results suggest that CRF is an important mediador of VIP effects on energy balance, and CRFR1 and CRFR2 are involved in these responses.
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Affiliation(s)
- Marcela Cristina Garnica-Siqueira
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Andressa Busetti Martins
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Dimas Augusto Morozin Zaia
- Laboratory of Prebiotic Chemistry, Department of Chemistry, State University of Londrina, Londrina, PR, Brazil
| | | | - Ernane Torres Uchôa
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil.
| | - Cássia Thaïs Bussamra Vieira Zaia
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil.
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