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Resveratrol Inhibition of the WNT/β-Catenin Pathway following Discogenic Low Back Pain. Int J Mol Sci 2022; 23:ijms23084092. [PMID: 35456908 PMCID: PMC9024678 DOI: 10.3390/ijms23084092] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/04/2022] [Accepted: 04/06/2022] [Indexed: 12/26/2022] Open
Abstract
Low back pain (LBP) management is an important clinical issue. Inadequate LBP control has consequences on the mental and physical health of patients. Thus, acquiring new information on LBP mechanism would increase the available therapeutic tools. Resveratrol is a natural compound with many beneficial effects. In this study, we investigated the role of resveratrol on behavioral changes, inflammation and oxidative stress induced by LBP. Ten microliters of Complete Freund’s adjuvant (CFA) was injected in the lumbar intervertebral disk of Sprague Dawley rats to induce degeneration, and resveratrol was administered daily. Behavioral analyses were performed on day zero, three, five and seven, and the animals were sacrificed to evaluate the molecular pathways involved. Resveratrol administration alleviated hyperalgesia, motor disfunction and allodynia. Resveratrol administration significantly reduced the loss of notochordal cells and degenerative changes in the intervertebral disk. From the molecular point of view, resveratrol reduced the 5th/6th lumbar (L5–6) spinal activation of the WNT pathway, reducing the expression of WNT3a and cysteine-rich domain frizzled (FZ)8 and the accumulation of cytosolic and nuclear β-catenin. Moreover, resveratrol reduced the levels of TNF-α and IL-18 that are target genes strictly downstream of the WNT/β-catenin pathway. It also showed important anti-inflammatory activities by reducing the activation of the NFkB pathway, the expression of iNOS and COX-2, and the levels of PGE2 in the lumbar spinal cord. Moreover, resveratrol reduced the oxidative stress associated with inflammation and pain, as shown by the observed reduced lipid peroxidation and increased GSH, SOD, and CAT activities. Therefore, resveratrol administration controlled the WNT/β-catenin pathway and the related inflammatory and oxidative alterations, thus alleviating the behavioral changes induced by LBP.
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Modzelewska B, Drygalski K, Hady HR, Kiełczewska A, Chomentowski A, Koryciński K, Głuszyńska P, Kleszczewski T. Resveratrol Relaxes Human Gastric Smooth Muscles Through High Conductance Calcium-Activated Potassium Channel in a Nitric Oxide-independent Manner. Front Pharmacol 2022; 13:823887. [PMID: 35145416 PMCID: PMC8822120 DOI: 10.3389/fphar.2022.823887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 01/03/2022] [Indexed: 11/25/2022] Open
Abstract
Resveratrol, as a polyphenolic compound that can be isolated from plants, and also a component of red wine has broad beneficial pharmacological properties. The aim was to investigate the role of nitric oxide and potassium channels in resveratrol-induced relaxation of human gastric smooth muscle. Gastric tissues were obtained from patients who underwent sleeve gastrectomy for severe obesity (n = 10 aged 21–48; BMI 48.21 ± 1.14). The mechanical activity from the muscle strips was detected under isometric conditions as the response to increasing concentrations of resveratrol before and after different pharmacological treatments. Resveratrol caused an observable, dose-dependent gastric muscle relaxation. The maximal response caused by the highest concentration of resveratrol was 83.49 ± 2.85% (p < 0.0001) of the control. Preincubation with L-NNA, L-NAME, or ODQ did not prevent the resveratrol-induced relaxation. Apamin, glibenclamide, 4AP or tamoxifen, did not inhibit the relaxing effect of resveratrol, as well. In turn, blocking BKCa by TEA, iberiotoxin, or charybdotoxin resulted in inhibition of resveratrol-induced relaxation (91.08 ± 2.07, p < 0.05; 95.60 ± 1.52, p < 0.01 and 89.58 ± 1.98, p < 0.05, respectively). This study provides the first observation that the relaxant effects of resveratrol in human gastric muscle strips occur directly through BKCa channels and independently of nitric oxide signaling pathways. Furthermore, there is considerable potential for further extensive clinical studies with resveratrol as an effective new drug or health supplement to treat gastrointestinal dyspepsia and other gastric hypermotility disorders.
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Affiliation(s)
- Beata Modzelewska
- Department of Biophysics, Faculty of Medicine, Medical University of Bialystok, Bialystok, Poland
- *Correspondence: Beata Modzelewska,
| | - Krzysztof Drygalski
- Department of Biophysics, Faculty of Medicine, Medical University of Bialystok, Bialystok, Poland
- Clinical Research Center, Medical University of Bialystok, Bialystok, Poland
| | - Hady Razak Hady
- Clinical Department of General and Endocrine Surgery, Medical University of Bialystok, Bialystok, Poland
| | - Aleksandra Kiełczewska
- Department of Biophysics, Faculty of Medicine, Medical University of Bialystok, Bialystok, Poland
| | - Andrzej Chomentowski
- Department of Biophysics, Faculty of Medicine, Medical University of Bialystok, Bialystok, Poland
| | - Krzysztof Koryciński
- Department of Biophysics, Faculty of Medicine, Medical University of Bialystok, Bialystok, Poland
| | - Paulina Głuszyńska
- Clinical Department of General and Endocrine Surgery, Medical University of Bialystok, Bialystok, Poland
| | - Tomasz Kleszczewski
- Department of Biophysics, Faculty of Medicine, Medical University of Bialystok, Bialystok, Poland
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Ye F, Liu Y, Li S, Zhang S, Foreman RD, Chen JD. Sacral nerve stimulation increases gastric accommodation in rats: a spinal afferent and vagal efferent pathway. Am J Physiol Gastrointest Liver Physiol 2020; 318:G574-G581. [PMID: 31984783 DOI: 10.1152/ajpgi.00255.2019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Impaired gastric accommodation (GA) has been frequently reported in various gastrointestinal diseases. No standard treatment strategy is available for treating impaired GA. We explored the possible effect of sacral nerve stimulation (SNS) on GA and discovered a spinal afferent and vagal efferent mechanism in rats. Sprague-Dawley rats (450-500 g) with a chronically implanted gastric cannula and ECG electrodes were studied in a series of sessions to study: 1) the effects of SNS with different parameters on gastric tone, compliance, and accommodation using a barostat device; two sets of parameters were tested as follows: parameter 1) 5 Hz, 500 µs, 10 s on 90 s off; 90% motor threshold and parameter 2) same as parameter 1 but 25 Hz; 2) the involvement of spinal afferent pathway via detecting c-fos immunoreactive (IR) cells in the nucleus of the solitary tract (NTS) of the brain; 3) the involvement of vagal efferent activity via the spectral analysis of heart rate variability derived from the ECG; and 4) the nitrergic mechanism, Nω-nitro-l-arginine methyl ester (l-NAME), a nitric oxide synthase (NOS) inhibitor, was given before SNS at 5 Hz. Compared with sham-SNS: 1) SNS at 5 Hz inhibited gastric tone and increased gastric compliance and GA. No difference was noted between the stimulation frequencies of 5 and 25 Hz. 2) SNS increased the expression of c-fos in the NTS. 3) SNS increased cardiac vagal efferent activity and decreased the sympathovagal ratio. 4) l-NAME blocked the relaxation effect of SNS. In conclusion, SNS with certain parameters relaxes gastric fundus and improves gastric accommodation mediated via a spinal afferent and vagal efferent pathway.NEW & NOTEWORTHY Currently, there is no adequate medical therapy for impaired gastric accommodation, since medications that relax the fundus often impair antral peristalsis and thus further delay gastric emptying that is commonly seen in patients with functional dyspepsia or gastroparesis. The advantage of the potential sacral nerve stimulation therapy is that it improves gastric accommodation by enhancing vagal activity, and the enhanced vagal activity would lead to enhanced antral peristalsis rather than inhibiting it.
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Affiliation(s)
- Feng Ye
- Veterans Research and Education Foundation, Veterans Affairs Medical Center, Oklahoma City, Oklahoma.,The First Affiliated Hospital of Xi'an Jiaotong University, Shannxi, China.,Department of Physiology, University of Oklahoma, Oklahoma City, Oklahoma.,Division of Gastroenterology and Hepatology, Johns Hopkins Center for Neurogastroenterology, Baltimore, Maryland
| | - Yi Liu
- Veterans Research and Education Foundation, Veterans Affairs Medical Center, Oklahoma City, Oklahoma.,The First Affiliated Hospital of Xi'an Jiaotong University, Shannxi, China.,Department of Physiology, University of Oklahoma, Oklahoma City, Oklahoma.,Division of Gastroenterology and Hepatology, Johns Hopkins Center for Neurogastroenterology, Baltimore, Maryland
| | - Shiying Li
- Veterans Research and Education Foundation, Veterans Affairs Medical Center, Oklahoma City, Oklahoma.,Division of Gastroenterology and Hepatology, Johns Hopkins Center for Neurogastroenterology, Baltimore, Maryland
| | - Sujuan Zhang
- Veterans Research and Education Foundation, Veterans Affairs Medical Center, Oklahoma City, Oklahoma.,Department of Physiology, University of Oklahoma, Oklahoma City, Oklahoma.,Division of Gastroenterology and Hepatology, Johns Hopkins Center for Neurogastroenterology, Baltimore, Maryland.,Department of Gastroenterology, Tianjin No. 254 Hospital, Tianjin, China
| | - Robert D Foreman
- Department of Physiology, University of Oklahoma, Oklahoma City, Oklahoma
| | - Jiande Dz Chen
- Veterans Research and Education Foundation, Veterans Affairs Medical Center, Oklahoma City, Oklahoma.,Division of Gastroenterology and Hepatology, Johns Hopkins Center for Neurogastroenterology, Baltimore, Maryland
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Li B, Xiao X, Miao Y, Guo L, Zhen J, Li X, Jiang B, Hu Z. Resveratrol alleviates obesity-associated podocyte injury in ovariectomized obese rats. Exp Ther Med 2019; 19:123-130. [PMID: 31853281 PMCID: PMC6909629 DOI: 10.3892/etm.2019.8178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 10/22/2019] [Indexed: 12/31/2022] Open
Abstract
Obesity-associated podocyte injury increases in parallel with inflammatory responses. Resveratrol, as an anti-inflammatory and antioxidative agent, has been proven to be effective in obesity. The purpose of the present study was to investigate the function of resveratrol in the early stages of podocyte injury in ovariectomized rats fed a high-fat diet (HFD). The 3-month-old female Wistar rats were randomly divided into four groups: Sham operation with a standard diet; sham operation with a HFD; ovariectomy with a HFD (O+H); and ovariectomy plus HFD treatment with resveratrol (40 mg/kg/day) (O+H+R). Following 12 weeks, the weights of the rats were measured and serum was obtained to measure the levels of 17β-estradiol (E2), serum lipids, serum creatinine, fasting blood glucose (FBG) and insulin. Periodic acid-schiff staining was used to detect renal pathological changes. Meanwhile, the expression of the podocyte-associated proteins nephrin and Wilms' tumor-1 was investigated using immunohistochemical staining, and the levels of tumor necrosis factor-α, interleukin-6 and monocyte chemotactic protein-1 in renal tissues were determined using western blotting. Compared with the O+H group, resveratrol significantly reduced the body weight, serum levels of total cholesterol, low-density lipoprotein cholesterol, FBG and insulin resistance, and increased the levels of E2 in obese rats with an ovariectomy combined with an HFD (P<0.05). Compared with the O+H group, although the O+H+R group had no significant changes in renal pathology, the changes in the levels of podocyte-associated proteins and inflammatory markers were significantly reversed (P<0.05). These results suggest that resveratrol may attenuate early podocyte injury by improving lipid metabolism and insulin sensitivity, and subsequently inhibiting inflammatory responses in obese rats induced by an ovariectomy with a HFD.
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Affiliation(s)
- Bing Li
- Department of Nephrology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China.,Department of Nephrology, Qilu Hospital of Shandong University Qing-Dao, Qingdao, Shandong 266000, P.R. China
| | - Xiaoyan Xiao
- Department of Nephrology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Yulian Miao
- Department of Medical Administration, Weifang Traditional Chinese Medicine Hospital, Weifang, Shandong 261041, P.R. China
| | - Ling Guo
- Department of Nephrology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Junhui Zhen
- Department of Pathology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Xianhua Li
- Department of Nephrology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Bei Jiang
- Department of Nephrology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Zhao Hu
- Department of Nephrology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
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Small molecules from natural products targeting the Wnt/β-catenin pathway as a therapeutic strategy. Biomed Pharmacother 2019; 117:108990. [DOI: 10.1016/j.biopha.2019.108990] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 05/09/2019] [Accepted: 05/13/2019] [Indexed: 02/06/2023] Open
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Harada Y, Koseki J, Sekine H, Fujitsuka N, Kobayashi H. Role of Bitter Taste Receptors in Regulating Gastric Accommodation in Guinea Pigs. J Pharmacol Exp Ther 2019; 369:466-472. [PMID: 30967403 DOI: 10.1124/jpet.118.256008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/04/2019] [Indexed: 01/07/2023] Open
Abstract
Taste stimulants play important roles in triggering digestion and absorption of nutrients and in toxin detection, under the control of the gut-brain axis. Bitter compounds regulate gut hormone secretion and gastrointestinal motility through bitter taste receptors (TAS2Rs) located in the taste buds on the tongue and in the enteroendocrine cells. Gastric accommodation (GA) is an important physiologic function. However, the role of TAS2R agonists in regulating GA remains unclear. To clarify whether GA is influenced by bitter stimulants, we examined the effect of TAS2R agonist denatonium benzoate (DB), administered intraorally and intragastrically, by measuring the consequent intrabag pressure in the proximal stomach of guinea pigs. Effects of the Kampo medicine rikkunshito (RKT) and its bitter components liquiritigenin and naringenin on GA were also examined. Intraoral DB (0.2 nmol/ml) administration enhanced GA. Intragastric DB administration (0.1 and 1 nmol/kg) promoted GA, whereas higher DB doses (30 μmol/kg) inhibited it. Similar changes in GA were observed with intragastric (1000 mg/kg) and intraoral (200 mg/ml) RKT administration. Liquiritigenin and naringenin also promoted GA. These findings suggest that GA is affected by the stimulation of TAS2Rs in the oral cavity or gut in guinea pigs.
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Affiliation(s)
- Yumi Harada
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan (Y.H., J.K., H.S., N.F.) and Center for Advanced Kampo Medicine and Clinical Research, Juntendo Graduate School of Medicine, Tokyo, Japan (H.K.)
| | - Junichi Koseki
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan (Y.H., J.K., H.S., N.F.) and Center for Advanced Kampo Medicine and Clinical Research, Juntendo Graduate School of Medicine, Tokyo, Japan (H.K.)
| | - Hitomi Sekine
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan (Y.H., J.K., H.S., N.F.) and Center for Advanced Kampo Medicine and Clinical Research, Juntendo Graduate School of Medicine, Tokyo, Japan (H.K.)
| | - Naoki Fujitsuka
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan (Y.H., J.K., H.S., N.F.) and Center for Advanced Kampo Medicine and Clinical Research, Juntendo Graduate School of Medicine, Tokyo, Japan (H.K.)
| | - Hiroyuki Kobayashi
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan (Y.H., J.K., H.S., N.F.) and Center for Advanced Kampo Medicine and Clinical Research, Juntendo Graduate School of Medicine, Tokyo, Japan (H.K.)
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