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Srivastava S, Mishra D, Bisht R, Savita K, Singh K, Rani P, Chanda D, Dev K. Psiguanol, a novel α-pyrone derivative from Psidium guajava leaves and vasorelaxant activity in rat aorta cells through intracellular cGMP-dependent opening of calcium-activated potassium channels. Nat Prod Res 2024:1-14. [PMID: 38198584 DOI: 10.1080/14786419.2023.2294477] [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: 05/22/2023] [Accepted: 12/06/2023] [Indexed: 01/12/2024]
Abstract
The phytochemical investigation of Psidium guajava leaves led to the isolation of total nineteen compounds which belongs to meroterpenoids, flavonoid, phenolics, and triterpenoids. The compounds were isolated using extensive chromatography techniques and identified as psiguanol (4), as new compound along with guajadial (1), psidial A (2), β-caryophyllene (3), quercetin (5), avicularin (6), guaijaverin (7), hyperin (8), rutin (9), ursolic acid (10), corosolic acid (11), asiatic acid (12), β-sitosterol (13), β-sitosterol-D-glucoside (14), ellagic acid (15), 3,3',4'-trimethylellagic acid 4-O-glucoside (16), protocatechuic acid (17), gallic acid (18), and tricosanoic acid (19) as known molecules. The compound 16 was isolated for the first time from this plant. The isolated compounds were evaluated for vasorelaxation activity in rat aorta cells and it was observed that compound 4 exhibited the most potent vasorelaxation response in the ex-vivo model in isolated rat aorta cells. Mechanistically, the vasorelaxation activity of 4 was mediated through cGMP-dependent BKCa channel opening.
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Affiliation(s)
- Shraddha Srivastava
- Phytochemistry Division, CSIR- Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Divya Mishra
- Bioprospection Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Rohit Bisht
- Phytochemistry Division, CSIR- Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Kumari Savita
- Bioprospection Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Kishan Singh
- Phytochemistry Division, CSIR- Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Poonam Rani
- Bioprospection Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Debabrata Chanda
- Bioprospection Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Kapil Dev
- Phytochemistry Division, CSIR- Central Institute of Medicinal and Aromatic Plants, Lucknow, India
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Hong WM, Xie YW, Zhao MY, Yu TH, Wang LN, Xu WY, Gao S, Cai HB, Guo Y, Zhang F. Vasoprotective Effects of Hyperoside against Cerebral Ischemia/Reperfusion Injury in Rats: Activation of Large-Conductance Ca 2+-Activated K + Channels. Neural Plast 2023; 2023:5545205. [PMID: 37609123 PMCID: PMC10442186 DOI: 10.1155/2023/5545205] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 06/29/2023] [Accepted: 07/19/2023] [Indexed: 08/24/2023] Open
Abstract
Hyperoside (Hyp), a kind of Chinese herbal medicine, exerts multiple therapeutic effects on many diseases. However, the role and mechanisms of Hyp in vascular pathophysiology in ischemic stroke need to be further established. The study aimed to investigate the role of (large-conductance Ca2+-activated K+) BK channels on the vasoprotection of Hyp against cerebral ischemia and reperfusion (I/R) injury in rats. The concentration gradient of Hyp was pretreated in both the middle cerebral artery occlusion and reperfusion model and oxygen-glucose deprivation/reoxygenation (OGD/R) model of primary vascular smooth muscle cells (VSMCs) in rats. A series of indicators were detected, including neurological deficit score, infarct volume, malondialdehyde (MDA), superoxide dismutase (SOD), cerebral blood flow (CBF), cell viability, membrane potential, and BK channels α- and β1-subunits expression. The results showed that Hyp significantly reduced infarct volume and ameliorated neurological dysfunction in I/R-injured rats. Besides, the effects of I/R-induced reduction of BK channels α- and β1-subunits expression were significantly reversed by Hyp in endothelial-denudated cerebral basilar arteries. Furthermore, the protective effect against I/R-induced increases of MDA and reduction of SOD as well as CBF induced by Hyp was significantly reversed by iberiotoxin (IbTX). In OGD/R-injured VSMCs, downregulated cellular viability and BK channels β1-subunits expression were remarkably reversed by Hyp. However, neither OGD/R nor Hyp affected BK channels α-subunits expression, and Hyp failed to induced hyperpolarization of VSMCs. Moreover, the protective effect against OGD/R-induced reduction of cell viability and SOD level and increases of MDA production induced by Hyp was significantly reversed by IbTX in VSMCs. The study indicates that Hyp has the therapeutic potential to improve vascular outcomes, and the mechanism is associated with suppressing oxidative stress and improving CBF through upregulating BK channels.
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Affiliation(s)
- Wen-Ming Hong
- Department of Neurosurgery, First Affiliated Hospital of Anhui Medical University, Hefei 230032, China
- School of Nursing, Anhui Medical University, Hefei 230032, China
- Open Project of Key Laboratory of Dermatology, Ministry of Education, Anhui Medical University, Hefei 230032, China
| | - Yue-Wu Xie
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Meng-Yu Zhao
- Department of Neurosurgery, First Affiliated Hospital of Anhui Medical University, Hefei 230032, China
| | - Tian-Hang Yu
- Department of Neurosurgery, First Affiliated Hospital of Anhui Medical University, Hefei 230032, China
| | - Li-Na Wang
- School of Nursing, Anhui Medical University, Hefei 230032, China
| | - Wan-Yan Xu
- School of Nursing, Anhui Medical University, Hefei 230032, China
| | - Shen Gao
- Department of Neurosurgery, First Affiliated Hospital of Anhui Medical University, Hefei 230032, China
| | - Hua-Bao Cai
- Department of Neurosurgery, First Affiliated Hospital of Anhui Medical University, Hefei 230032, China
| | - Yan Guo
- Department of Pharmacology, Anhui Medical University, Hefei 230032, China
| | - Fang Zhang
- School of Nursing, Anhui Medical University, Hefei 230032, China
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Singh MK, Savita K, Singh S, Mishra D, Rani P, Chanda D, Verma RS. Vasorelaxant property of 2-phenyl ethyl alcohol isolated from the spent floral distillate of damask rose (Rosa damascena Mill.) and its possible mechanism. JOURNAL OF ETHNOPHARMACOLOGY 2023; 313:116603. [PMID: 37149069 DOI: 10.1016/j.jep.2023.116603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/01/2023] [Accepted: 05/03/2023] [Indexed: 05/08/2023]
Abstract
ETHNOBOTANICAL RELEVANCE Rosa damascena Mill. (Rosaceae), commonly known as damask rose, is an ancient medicinal and perfumery plant used in Traditional Unani Medicine due to various therapeutic effects, including cardiovascular benefits. AIM OF THE STUDY This study aimed to evaluate the vasorelaxant effect of the 2-phenyl ethyl alcohol (PEA) isolated from the spent flowers of R. damascena which remain after the extraction of essential oil. MATERIALS AND METHODS The freshly collected flowers of R. damascena were hydro-distilled in a Clevenger's type apparatus to extract the rose essential oil (REO). After removing the REO, the spent-flower hydro-distillate was collected and extracted with organic solvents to yield a spent-flower hydro-distillate extract (SFHE), which was further purified by column chromatography. The SFHE and its isolate were characterized by gas chromatography (GC-FID), gas chromatography-mass spectrometry (GC-MS), and nuclear magnetic resonance (NMR) techniques. The PEA, isolated from SFHE, was evaluated for vasorelaxation response in conduit blood vessels like rat aorta and resistant vessels like mesenteric artery. The preliminary screening of PEA was done in aortic preparation pre-constricted with phenylephrine. Further, a concentration-dependent relaxation response to PEA has been elicited in both endothelium-intact and endothelium-denuded arterial rings, and the mode of action was explored. RESULTS The SFHE revealed the presence of PEA as the main constituent (89.36%), which was further purity by column chromatography to a purity of 95.0%. The PEA exhibited potent vasorelaxation response both in conduit vessels like the rat aorta and resistance vessels like the mesenteric artery. The relaxation response is mediated without any involvement of vascular endothelium. Further, TEA sensitive BKca channel was found to be the major target for PEA-induced relaxation response in these blood vessels. CONCLUSIONS The spent flowers of R. damascena, which remain after the extraction of REO, could be used to extract PEA. The PEA possessed marked vasorelaxation properties in both aorta and mesenteric artery and showed promise for development into an herbal product against hypertension.
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Affiliation(s)
- Munmun Kumar Singh
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), PO CIMAP, Lucknow, 226015, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India
| | - Kumari Savita
- Bio-Prospection and Product Development, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), PO CIMAP, Lucknow, 226015, India
| | - Swati Singh
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), PO CIMAP, Lucknow, 226015, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India
| | - Divya Mishra
- Bio-Prospection and Product Development, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), PO CIMAP, Lucknow, 226015, India
| | - Poonam Rani
- Bio-Prospection and Product Development, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), PO CIMAP, Lucknow, 226015, India
| | - Debabrata Chanda
- Bio-Prospection and Product Development, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), PO CIMAP, Lucknow, 226015, India.
| | - Ram Swaroop Verma
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), PO CIMAP, Lucknow, 226015, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India.
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Xie L, Diao Z, Xia J, Zhang J, Xu Y, Wu Y, Liu Z, Jiang C, Peng Y, Song Z, Wang G, Zhu J, Sun J. Comprehensive Evaluation of Metabolism and the Contribution of the Hepatic First-Pass Effect in the Bioavailability of Glabridin in Rats. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:1944-1956. [PMID: 36649475 DOI: 10.1021/acs.jafc.2c06460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Glabridin is a bioactive isoflavan, which has a wide range of biological properties and is widely used in the market of health products and dietary supplements. However, the transformation pathway of glabridin in vivo is unclear, and the bioavailability is controversial among different studies. Therefore, a new HPLC-Q-TOF method was developed to analyze and identify the prototype and metabolites of glabridin in rats. A total of 63 compounds were identified, including hydroxylation, demethylation, acetylation, demethylation to carboxylation, glucuronidation, and sulfate conjugation, and 43 of which were new metabolites that had not been reported. Additionally, our study verified that the oral bioavailability of glabridin was 6.63 ± 2.29% in rats. Furthermore, we found that the hepatic first-pass effect was 62.12 ± 15.7% for glabridin. These results indicated that a high hepatic first-pass effect and extensive metabolism of glabridin in vivo may lead to its limited oral bioavailability.
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Affiliation(s)
- Like Xie
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu210009, China
| | - Zhipeng Diao
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu210009, China
| | - Jing Xia
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu210009, China
| | - Jing Zhang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu210009, China
| | - Yao Xu
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu210009, China
| | - Yapeng Wu
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu210009, China
| | - Zihou Liu
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu210009, China
| | - Chengwen Jiang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu210009, China
| | - Ying Peng
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu210009, China
| | - Zhe Song
- Instrumental Analysis Center, China Pharmaceutical University, Nanjing, Jiangsu210009, China
| | - Guangji Wang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu210009, China
| | - Junrong Zhu
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu210009, China
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu210009, China
| | - Jianguo Sun
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu210009, China
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Zhang J, Wu X, Zhong B, Liao Q, Wang X, Xie Y, He X. Review on the Diverse Biological Effects of Glabridin. Drug Des Devel Ther 2023; 17:15-37. [PMID: 36647530 PMCID: PMC9840373 DOI: 10.2147/dddt.s385981] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
Glabridin is a prenylated isoflavan from the roots of Glycyrrhiza glabra Linne and has posed great impact on the areas of drug development and medicine, due to various biological properties such as anti-inflammation, anti-oxidation, anti-tumor, anti-microorganism, bone protection, cardiovascular protection, neuroprotection, hepatoprotection, anti-obesity, and anti-diabetes. Many signaling pathways, including NF-κB, MAPK, Wnt/β-catenin, ERα/SRC-1, PI3K/AKT, and AMPK, have been implicated in the regulatory activities of glabridin. Interestingly, glabridin has been considered as an inhibitor of tyrosinase, P-glycoprotein (P-gp), and CYP2E1 and an activator of peroxisome proliferator-activated receptor γ (PPARγ), although their molecular regulating mechanisms still need further investigation. However, poor water solubility and low bioavailability have greatly limited the clinical applications of glabridin. Hopefully, several effective strategies, such as nanoemulsions, microneedles, and smartPearls formulation, have been developed for improvement.
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Affiliation(s)
- Jianhong Zhang
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, People’s Republic of China,Ganzhou Key Laboratory of Hepatocellular Carcinoma, First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, People’s Republic of China
| | - Xinhui Wu
- Department of General Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, People’s Republic of China
| | - Baiyin Zhong
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, People’s Republic of China
| | - Qicheng Liao
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, People’s Republic of China
| | - Xin Wang
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, People’s Republic of China
| | - Yuankang Xie
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, People’s Republic of China
| | - Xiao He
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, People’s Republic of China,Correspondence: Xiao He, Email
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Liu W, Zheng L, Zhang R, Hou P, Wang J, Wu L, Li J. Circ-ZEB1 promotes PIK3CA expression by silencing miR-199a-3p and affects the proliferation and apoptosis of hepatocellular carcinoma. Mol Cancer 2022; 21:72. [PMID: 35277182 PMCID: PMC8915544 DOI: 10.1186/s12943-022-01529-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 02/01/2022] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Although the prognostic outcomes of liver cancer (LC) cases have improved with the advancement in diagnostic technology and treatment methods, the transferability and recurrence of HCC and the 5-year and 10-year survival rates of patients have remained unsatisfactory. As a result, there is a need for more accurate diagnostic indicators that can detect liver cancer early, effectively improving the prognosis of patients. Whole-genome sequencing (WGS) revealed that circ-ZEB1 and PIK3CA are highly expressed in HCC tissues, whereas miR-199a-3p is significantly downregulated in HCC. Multiple databases search and biological analysis revealed that elevated expression of circ-ZEB1 and PIK3CA was related to poor prognosis of HCC. In vitro and in vivo studies revealed that upregulated levels of PIK3CA and circ-ZEB1 were closely associated with HCC proliferation and apoptosis. Based on these results, we believe that circ-ZEB1 and PIK3CA could be used as biomarkers to diagnose and treat patients with HCC. More importantly, circ-ZEB1 can promotes the expression of PIK3CA by silencing miR-199a-3p and affecting the progression of HCC. METHODS AND RESULTS Postoperative specimens from 56 patients with HCC who had not undergone chemotherapy from 2015 to 2018 were collected from the Department of Hepatobiliary Surgery, Second Affiliated Hospital of Nanchang University. WGS revealed differential expression of genes in HCC. Furthermore, RT-qPCR detected the expression of circ-ZEB1, miR-199a-3p, and PIK3CA in HCC tissues. MTT, EdU, and plate cloning experiments were conducted to detect cell proliferation, whereas flow cytometry analysis was used to detect apoptosis. FISH was used to co-localize circ-ZEB1 and miR-199a-3p, and biotin-coupled probe pull-down assay was used to detect the specific binding of circ-ZEB1 and miR-199a-3p. The dual-luciferase report assay detected the association of miR-199a-3p with PIK3CA. Western blotting was used to study the expression of PIK3CA protein. Circ-ZEB1 and PIK3CA were upregulated in HCC and predicted a poor prognosis. MiR-199a-3p showed low expression in HCC, whereas downregulation of circ-ZEB1 reduced HCC cell proliferation and promoted cell apoptosis. MiR-199a-3p blocked the effect of circ-ZEB1 on HCC. Circ-ZEB1 served as a biomarker of HCC. Circ-ZEB1 promoted the expression of PIK3CA by silencing miR-199a-3p to affect the progress of HCC. CONCLUSIONS Circ-ZEB1 promoted the expression of PIK3CA by depleting miR-199a-3p, thereby affecting HCC proliferation and apoptosis.
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Affiliation(s)
- Weiwei Liu
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, 1 Mindle Road, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Lu Zheng
- Department of Hepatobiliary Surgery, Xinqiao Hospital, Third Military Medical University, 83 Xinqiao Main Street, Chongqing, 400000, People's Republic of China
| | - Rongguiyi Zhang
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, 1 Mindle Road, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Ping Hou
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, 1 Mindle Road, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Jiakun Wang
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, 1 Mindle Road, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Linquan Wu
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, 1 Mindle Road, Nanchang, Jiangxi, 330006, People's Republic of China.
| | - Jing Li
- Department of Hepatobiliary Surgery, Xinqiao Hospital, Third Military Medical University, 83 Xinqiao Main Street, Chongqing, 400000, People's Republic of China.
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Wen W, Xu D, Piao Y, Li X. Prognostic value of maximum standard uptake value, metabolic tumour volume, and total lesion glycolysis of 18F-FDG PET/CT in patients with malignant pleural mesothelioma: a systematic review and meta-analysis. Cancer Cell Int 2022; 22:60. [PMID: 35114996 PMCID: PMC8811994 DOI: 10.1186/s12935-022-02482-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 01/22/2022] [Indexed: 11/10/2022] Open
Abstract
PURPOSE Present work systematically reviewed relevant literature based on 18F-FDG PET parameters and conducted a meta-analysis to examine the prognostic value of maximal standard uptake value (SUVmax), total lesional glycolysis (TLG), and metabolic tumour volume (MTV) in the prognosis of malignant pleural mesothelioma (MPM). METHODS The relevant literature published in English were searched on PubMed, Cochrane Library, and EMBASE databases. We also evaluated the significance of SUVmax, TLG, and MTV in prognosis prediction using pooled hazard ratios (HRs). RESULTS The current study comprised 12 primary studies with a total of 1307 MPM cases. According to our results, the pooled HR (95% confidence interval [CI]) of increased SUVmax for overall survival (OS) was 1.30 (95% CI 1.13-1.49, P = 0.000), whereas the increased TLG was 1.81(95% CI 1.25-2.61, P = 0.089). The increased MTV was not significantly related to OS (1.14 [95% CI 0.87-1.50, P = 0.18]).However, study design-stratified subgroup analysis suggested that differences in OS of retrospective and prospective subgroups were statistically significant, and no significant heterogeneity among different studies was observed. CONCLUSION Based on the findings from the present work, PET/CT can significantly affect the prognosis prediction in MPM cases. Also, the increased SUVmax and TLG values predict an increased risk of mortality.
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Affiliation(s)
- Weibo Wen
- Department of Nuclear Medicine, Yanbian University Hospital, Yanji, Jilin Province, China.,Center of Morphological Experiment, Medical College of Yanbian University, Yanji, Jilin Province, China
| | - Dongyuan Xu
- Center of Morphological Experiment, Medical College of Yanbian University, Yanji, Jilin Province, China
| | - Yongnan Piao
- Department of Nuclear Medicine, Yanbian University Hospital, Yanji, Jilin Province, China
| | - Xiangdan Li
- Center of Morphological Experiment, Medical College of Yanbian University, Yanji, Jilin Province, China.
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The role of Glabridin in antifungal and anti-inflammation effects in Aspergillus fumigatus keratitis. Exp Eye Res 2021; 214:108883. [PMID: 34896107 DOI: 10.1016/j.exer.2021.108883] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/13/2021] [Accepted: 12/01/2021] [Indexed: 12/25/2022]
Abstract
PURPOSE To investigate the effect of Glabridin (GLD) in Aspergillus fumigatus keratitis and its associated mechanisms. METHODS Aspergillus fumigatus (A. fumigatus) conidia was inoculated in 96-well plate, and minimal inhibitory concentration (MIC) and biofilm formation ability were evaluated after GLD treatment. Spore adhesion ability was evaluated in conidia infected human corneal epithelial cells (HCECs). Keratitis mouse model was created by corneal intrastromal injection with A. fumigatus conidia, and GLD treatment started at the day after infection. The number of fungal colonies was calculated by plate count, and degree of corneal inflammation was assessed by clinical score. Flow cytometry, myeloperoxidase (MPO), and immunofluorescence staining (IFS) experiments were used to assess neutrophil infiltrations. PCR, ELISA and Western blot were conducted to determine levels of TLR4, Dectin-1 as well as downstream inflammatory factors. RESULTS GLD treatment suppressed the proliferation, biofilm formation abilities and adhesive capability of A. fumigatus. In mice upon A. fumigatus infection, treatment of GLD showed significantly decreased severity of corneal inflammation, reduced number of A. fumigatus in cornea, and suppressed neutrophil infiltration in cornea. GLD treatment obviously inhibited mRNA and protein levels of Dectin-1, TLR4 and proinflammatory mediators such as IL-1β, HMGB1, and TNF-α in mice corneas compared to the control group. CONCLUSION GLD has antifungal and anti-inflammatory effects in fungal keratitis through suppressing A. fumigatus proliferation and alleviating neutrophil infiltration, and repressing the expression of TLR4, Dectin-1 and proinflammatory mediators.
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Pharmacological properties of glabridin (a flavonoid extracted from licorice): A comprehensive review. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104638] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Srivastava N, Mishra S, Iqbal H, Chanda D, Shanker K. Standardization of Kaempferia galanga L. rhizome and vasorelaxation effect of its key metabolite ethyl p-methoxycinnamate. JOURNAL OF ETHNOPHARMACOLOGY 2021; 271:113911. [PMID: 33571614 DOI: 10.1016/j.jep.2021.113911] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/09/2020] [Accepted: 02/05/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Kaempferia galanga L. rhizome (KGR) is part of more than sixty-one Ayurvedic formulations and commonly known as 'Chandramula'. KGR is widely used in traditional Indian medicines to treat fever (jwar), rheumatism (Amavata), respiratory (Shwasa), hypertension (Vyanabala vaishamya) and cardiovascular disorders (Vyanavayu Dushtijanya Hrudrog). Although ethnomedicinal properties have extensively been demonstrated in traditional medicines of south-east countries i.e. China, India, Indonesia, and Malaysia, the chemico-biological validation are still lacking. AIM OF THE STUDY Chemico-biological standardization with respect to its vasorelaxation potential is the main objective of the present study. To investigate the vasorelaxation potential of key phytochemical of KGR, i.e., ethyl-p-methoxycinnamate (EPMC) and to study it's the mechanism of action. MATERIALS AND METHODS A HPLC method was developed and validated for the quality assessment of KGR using its two major phytochemicals i.e. ethyl-p-methoxycinnamate (EPMC) and ethyl cinnamate (EC) in KGR. The vasorelaxation effect of major phytochemicals of KGR was evaluated on the main mesenteric arteries isolated from male Wistar rats. Specific BKca channel blocker tetraethylammonium (TEA), receptor antagonist, nitric oxide scavenging capacity, and antioxidant potential were also evaluated for its plausible mechanism. RESULTS Present validated HPLC method facilitates simultaneous quantitation of EPMC and EC faster than classical GC techniques. EPMC has shown a dose-dependent relaxation in rat main mesenteric arteries (MMA) contracted by U46619 with an Emax of 58.68 ± 3.31%. Similarly, in endothelium-denuded MMA rings, relaxation was also observed (Emax of 61.83 ± 3.38%). Moreover, relaxation response to EPMC has strongly inhibited (Emax 14.76 ± 2.29%) when the tissue exposed to depolarizing high K+ containing buffer for the contraction. The point correlation dimension (pD2) values were also significantly decreased in high K+ treated arterial rings compared to control. Interestingly, when MMA rings incubated with a specific BKca channel blocker (TEA, 1 mM), the relaxation response to EPMC was also significantly blocked. CONCLUSIONS The first time this study demonstrated the chemical standardization of K. galanga rhizome and EPMC is responsible for its vasorelaxation potential as demonstrated by the endothelium-independent response mediated by Ca2+ dependent potassium channels.
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Affiliation(s)
- Nupur Srivastava
- Analytical Chemistry Department, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226 015, India
| | - Sonali Mishra
- Analytical Chemistry Department, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226 015, India
| | - Hina Iqbal
- Molecular Bioprospection Department, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226 015, India
| | - Debabrata Chanda
- Molecular Bioprospection Department, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226 015, India.
| | - Karuna Shanker
- Analytical Chemistry Department, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226 015, India.
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Güven C, Parlar A. Glabridin Relaxes Vascular Smooth Muscles by Activating BK Ca Channels and Inhibiting Phosphodiesterase in Human Saphenous Vein. Curr Med Sci 2021; 41:381-389. [PMID: 33877557 DOI: 10.1007/s11596-021-2358-6] [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: 04/14/2020] [Accepted: 02/03/2021] [Indexed: 11/30/2022]
Abstract
The aim of the current study was to investigate the pharmacological activity of glabridin on the isolated human saphenous vein (SV) and explore the underlying mechanisms. Samples of patients' SVs were removed during bypass surgery, and 4-mm lengths of the vessels were placed in Krebs solution at +4°C and hung in an isolated organ bath to assess their contraction/relaxation responses. The contraction/relaxation responses were recorded to observe if the cyclic guanosine monophosphate (cGMP)/protein kinase G (PKG) pathway mediates the relaxant effect of glabridin after treatment with blockers like ODQ (a guanylate cyclase inhibitor), KT5823 (a PKG inhibitor), isobutylmethylxanthine [IBMX, a phosphodiesterase (PDE) inhibitor], and cantharidin [Cant, a myosin light-chain phosphatase (MLCP) inhibitor]. Moreover, nitric oxide (NO), cGMP, and PKG levels in SV tissues were determined by ELISA after incubation with glabridin, N(ω)-nitro-L-arginine methyl ester (L-Name, a NO synthetase inhibitor), phenylephrine (PE), ODQ, IBMX, and KT5823. The results showed that glabridin relaxed the vascular smooth muscle of human SV pretreated with PE in a dose-dependent manner, which was independent of the endothelium. The vasorelaxant effect of glabridin was only inhibited by iberiotoxin (IbTX), Cant, and KT5823. Glabridin increased cGMP and PKG levels in SV homogenates, whereas it did not alter the NO level. The enhancing effects of cGMP and PKG levels by glabridin were abolished by ODQ and KT5823. In conclusion, glabridin has a vasorelaxant effect, which is associated with the activation of BKCa channels and inhibition of PDE.
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Affiliation(s)
- Cengiz Güven
- Department of Cardiovascular Surgery, Faculty of Medicine, University of Adiyaman, Adiyaman, 02040, Turkey
| | - Ali Parlar
- Department of Pharmacology, Faculty of Medicine, University of Adiyaman, Adiyaman, 02040, Turkey.
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12
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Iqbal H, Verma AK, Yadav P, Alam S, Shafiq M, Mishra D, Khan F, Hanif K, Negi AS, Chanda D. Antihypertensive Effect of a Novel Angiotensin II Receptor Blocker Fluorophenyl Benzimidazole: Contribution of cGMP, Voltage-dependent Calcium Channels, and BK Ca Channels to Vasorelaxant Mechanisms. Front Pharmacol 2021; 12:611109. [PMID: 33859561 PMCID: PMC8042648 DOI: 10.3389/fphar.2021.611109] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 02/09/2021] [Indexed: 12/03/2022] Open
Abstract
Background: The current study presents the novel angiotensin II receptor blocker fluorophenyl benzimidazole (FPD) as an antihypertensive agent in the SHR model of hypertension. We investigated the role of cGMP, voltage-dependent L-type calcium channels, and BKCa channels in the vasorelaxant mechanisms of FPD in the rat superior mesenteric artery. Methods: The antihypertensive effect of FPD was examined using an invasive technique measuring blood pressure in SHR animals. Using a myograph, tension measurement was completed in the superior mesenteric artery to elucidate the mechanisms of vasorelaxation involving AT1 receptors, the NO/cGMP pathway, L-type calcium channels, and BKCa channels. Ion flux (Ca2+, K+) studies were conducted in aortic smooth muscle cells. Putative targets proteins were determined by in silico docking studies. A safety evaluation of FPD was carried out using Swiss albino mice. Results: FPD significantly decreased blood pressure in SHR. It relaxed superior mesenteric arteries in a concentration-dependent manner and significantly inhibited angiotensin II-induced contraction. The relaxation response was also mediated by an increase in tissue cGMP levels, inhibition of L-type calcium channels, and the opening of BKCa channels. FPD further enhanced efflux of K+ and inhibited Bay K8644-stimulated Ca2+ influx in aortic smooth muscle cells and docked well in an in silico study with the targets. It was well tolerated in the toxicity study. Conclusion: The present study reports the antihypertensive activity of novel AT-1 receptor blocker FPD at 50 and 100 mg kg−1 with cGMP, L-type calcium channels, and BKCa channels as putative targets of vasorelaxation, and was found safe in oral toxicity.
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Affiliation(s)
- Hina Iqbal
- Bioprospection and Product Development Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Amit Kumar Verma
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Pankaj Yadav
- Bioprospection and Product Development Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Sarfaraz Alam
- Computational Biology Lab, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Mohammad Shafiq
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, India
| | - Divya Mishra
- Bioprospection and Product Development Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Feroz Khan
- Computational Biology Lab, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Kashif Hanif
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, India
| | - Arvind Singh Negi
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Debabrata Chanda
- Bioprospection and Product Development Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
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13
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Srivastava V, Yadav A, Sarkar P. Molecular Docking and ADMET Study of Bioactive Compounds of Glycyrrhiza glabra Against Main Protease of SARS-CoV2. ACTA ACUST UNITED AC 2020; 49:2999-3007. [PMID: 33078096 PMCID: PMC7556787 DOI: 10.1016/j.matpr.2020.10.055] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 10/03/2020] [Indexed: 12/23/2022]
Abstract
Recent pandemic situation of COVID-19 is caused due to SARS-CoV2 and almost all the countries of the world have been affected by this highly contagious virus. Main protease (Mpro) of this virus is a highly attractive drug target among various other enzymes due to its ability to process poly-protein that is the translated product of the SARS-CoV2 RNA. The present study demonstrates molecular docking study of Glycyrrhiza glabra (Gg) active compounds such as Glycyrrhizic acid (GA), Liquiritigenin (L) and Glabridin (G) against the Mpro. Docking studies shows that these active compounds bind strongly with some of the amino acid residues in the active site of Mpro and inhibits the enzyme strongly. GA, L, and G are proposed to be strong inhibitors of the enzyme and the amino acids: His41, Gly143, Gln189, Glu 166, Cys 145, Thr25, Asn142, Met49, Cys44, Thr45 and pro168 present in the active site of Mpro were shown to make non-covalent interaction with these compounds. In silico ADMET properties prediction also shows that Gg active compounds had good solubility, absorption, permeation, non-toxic, and non– carcinogenic characteristics. Our finding concludes that all of the three active compounds of Gg have the potential to be strong inhibitors for Mpro of SARS-CoV2 but glycyrrhizic acid has a high binding affinity and a good ADMET properties than the other two.
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Affiliation(s)
- Vivek Srivastava
- Department of Chemistry and Biochemistry, School of Basic Sciences and Research, Sharda University, Greater Noida-201308, U.P, India
| | - Ankush Yadav
- Department of Biochemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi-110062, India
| | - Paratpar Sarkar
- Department of Chemistry and Biochemistry, School of Basic Sciences and Research, Sharda University, Greater Noida-201308, U.P, India
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14
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Glabridin attenuates airway inflammation and hyperresponsiveness in a mice model of ovalbumin-induced asthma. Pulm Pharmacol Ther 2020; 63:101936. [PMID: 32783990 DOI: 10.1016/j.pupt.2020.101936] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/04/2020] [Accepted: 08/05/2020] [Indexed: 11/22/2022]
Abstract
Asthma is an inflammatory disease of the airways of the lungs, which is characterized by airflow obstruction and bronchospasms. Glabridin is a major flavonoid, especially found in root of Glycyrrhiza glabra, and has several pharmacological activities, including antioxidant and anti-inflammatory effects. The anti-asthmatic effect and possible mechanism of glabridin, however, have not been revealed so far. The aim of this study is to investigate the effects and possible mechanisms of glabridin against ovalbumin (OVA)-induced airway hyperresponsiveness (AHR) and inflammation in mice. In male BALB/c mice, asthma was induced by intraperitoneal (i.p) injection of OVA mixed with 2 mg aluminium hydroxide on days 0, 14 and boosted with OVA aerosol challenge on days 21, 22, and 23. Mice were either treated with dexamethasone (i.p, 1 mg/kg) or glabridin (10, 20, and 30 mg/kg) from days 18-23. Pulmonary function parameters such as peak inspiratory flow, peak expiratory flow, tidal volume, expiratory volume, the frequency of breathing, enhanced pause values were evaluated by using whole-body plethysmography. Measurements were performed at baseline and following methacholine (50 mg/mL) challenges. In addition, white blood cells (WBC) count, total protein, and IgE levels were measured in bronchial alveolar lavage fluid (BALF), lung, and serum, respectively. Glabridin (20 or 30 mg/kg) significantly attenuated (p < 0.05) OVA-induced alteration in respiratory parameters. Elevated counts of total WBC, differential WBC (neutrophils, lymphocytes, monocytes, and eosinophils) in BALF and the total protein in lungs and BALF were significantly decreased (p < 0.05) by glabridin (20 or 30 mg/kg). It also significantly attenuated the increased serum IgE levels (p < 0.05). As glabridin reduces the level of serum IgE, the total protein and the count of WBC and improves respiratory function, it may be a novel therapeutic agent in asthma.
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Wang C, Chen L, Xu C, Shi J, Chen S, Tan M, Chen J, Zou L, Chen C, Liu Z, Liu X. A Comprehensive Review for Phytochemical, Pharmacological, and Biosynthesis Studies on Glycyrrhiza spp. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2020; 48:17-45. [PMID: 31931596 DOI: 10.1142/s0192415x20500020] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Licorice is extensively applied in food as well as herbal medicine across the world, possessing a substantial share in the global market. It has made great progress in chemical and pharmacological research in recent years. Currently, Glycyrrhiza uralensis Fisch., Glycyrrhiza inflata Bat., and Glycyrrhiza glabra L. were officially used as Gan-Cao according to the Chinese Pharmacopoeia. Accumulating evidence demonstrated three varieties of licorice have their own special compounds except for two quality markers set by Pharmacopoeia, providing great possibility for better understanding their characteristics, evaluating quality of each species and studying biosynthesis mechanisms of species-specific compounds. As a special "guide drug" in clinic, licorice plays an important role in Chinese herbal formulas. The interaction between licorice with other ingredients and their metabolism in vivo should also be taken into consideration. In addition, draft genome annotation, and success of the final step of glycyrrhizin biosynthesis have paved the way for biosynthesis of other active constituents in licorice, a promising beginning of solving source shortage. Accordingly, we comprehensively explored the nearly 400 chemical compounds found in the three varieties of licorice so far, systematically excavated various pharmacological activities, including metabolism via CYP450 system in vivo, and introduced the complete biosynthesis pathway of glycyrrhizin in licorice. The review will facilitate the further research toward this herbal medicine.
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Affiliation(s)
- Chengcheng Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Lihong Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Chaoqie Xu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Jingjing Shi
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Shuyu Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Mengxia Tan
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Jiali Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Lisi Zou
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Cuihua Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Zixiu Liu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Xunhong Liu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China.,Collaborative Innovation Center of Chinese, Medicinal Resources Industrialization, Nanjing 210023, P. R. China.,National and Local Collaborative Engineering, Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing 210023, P. R. China
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Singh S, Agarwal K, Iqbal H, Yadav P, Yadav D, Chanda D, Tandon S, Khan F, Gupta AK, Gupta A. Synthesis and evaluation of substituted 8,8-dimethyl-8H-pyrano[2,3-f]chromen-2-one derivatives as vasorelaxing agents. Bioorg Med Chem Lett 2020; 30:126759. [DOI: 10.1016/j.bmcl.2019.126759] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 10/12/2019] [Accepted: 10/14/2019] [Indexed: 12/31/2022]
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17
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Bioactive Candy: Effects of Licorice on the Cardiovascular System. Foods 2019; 8:foods8100495. [PMID: 31615045 PMCID: PMC6836258 DOI: 10.3390/foods8100495] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/07/2019] [Accepted: 10/09/2019] [Indexed: 12/15/2022] Open
Abstract
Licorice, today chiefly utilized as a flavoring additive in tea, tobacco and candy, is one of the oldest used herbs for medicinal purposes and consists of up to 300 active compounds. The main active constituent of licorice is the prodrug glycyrrhizin, which is successively converted to 3β-monoglucuronyl-18β-glycyrrhetinic acid (3MGA) and 18β-glycyrrhetinic acid (GA) in the intestines. Despite many reported health benefits, 3MGA and GA inhibit the 11-β-hydrogenase type II enzyme (11β-HSD2) oxidizing cortisol to cortisone. Through activation of mineralocorticoid receptors, high cortisol levels induce a mild form of apparent mineralocorticoid excess in the kidney and increase systemic vascular resistance. Continuous inhibition of 11β-HSD2 related to excess licorice consumption will create a state of hypernatremia, hypokalemia and increased fluid volume, which can cause serious life-threatening complications especially in patients already suffering from cardiovascular diseases. Two recent meta-analyses of 18 and 26 studies investigating the correlation between licorice intake and blood pressure revealed statistically significant increases both in systolic (5.45 mmHg) and in diastolic blood pressure (3.19/1.74 mmHg). This review summarizes and evaluates current literature about the acute and chronic effects of licorice ingestion on the cardiovascular system with special focus on blood pressure. Starting from the molecular actions of licorice (metabolites) inside the cells, it describes how licorice intake is affecting the human body and shows the boundaries between the health benefits of licorice and possible harmful effects.
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Antihypertensive activity of diethyl-4,4'-dihydroxy-8,3'-neolign-7,7'-dien-9,9'-dionate: A continuation study in L-NAME treated wistar rats. Eur J Pharmacol 2019; 858:172482. [PMID: 31233749 DOI: 10.1016/j.ejphar.2019.172482] [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: 01/16/2019] [Revised: 06/18/2019] [Accepted: 06/18/2019] [Indexed: 11/23/2022]
Abstract
In the present study, we report that neolignan1 (Diethyl-4,4'-dihydroxy-8,3'-neolign-7,7'-dien-9,9'-dionate) relaxes the superior mesenteric artery in a concentration dependent manner (pD2 value 5.392 ± 0.04; n = 8 for endothelium intact and 5.204 ± 0.03; n = 8 for endothelium denuded mesenteric rings, respectively). The relaxation response of neolignan1 was found to be endothelium independent and sensitive to 1H-[1,2,4] oxadiazolo [4,3-a]quinoxalin-1-on (ODQ; 1 μM) and tetraethyl ammonium (TEA; 1 mM). In-silico studies showed good LibDock score (92.66) of neolignan1 with BKCa channel and are in well corroboration with ex-vivo study. Further, neolignan1 significantly decreased the systolic blood pressure, diastolic blood pressure and mean arterial pressure in the Nω-Nitro-L-arginine methyl ester hydrochloride (L-NAME; 50 mg/kg) treated Wistar rats at the dose of 30 and 100 mg/kg given once orally for 15 days. In addition, neolignan1 is well tolerated up to 100 mg/kg when given as a repeated dose, once orally for 28 days in Swiss albino mice. Neolignan1 was well absorbed from oral route, reached peak at 4 h and eliminated below detection level by 12 h after administration. Our present study concludes that neolignan1 produced relaxation in superior mesenteric artery by opening of BKCa channel and produced significant antihypertensive activity in L-NAME treated Wistar rats and was well tolerated by the experimental animal.
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Dogan MF, Yildiz O, Arslan SO, Ulusoy KG. Potassium channels in vascular smooth muscle: a pathophysiological and pharmacological perspective. Fundam Clin Pharmacol 2019; 33:504-523. [PMID: 30851197 DOI: 10.1111/fcp.12461] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 02/28/2019] [Accepted: 03/07/2019] [Indexed: 12/23/2022]
Abstract
Potassium (K+ ) ion channel activity is an important determinant of vascular tone by regulating cell membrane potential (MP). Activation of K+ channels leads to membrane hyperpolarization and subsequently vasodilatation, while inhibition of the channels causes membrane depolarization and then vasoconstriction. So far five distinct types of K+ channels have been identified in vascular smooth muscle cells (VSMCs): Ca+2 -activated K+ channels (BKC a ), voltage-dependent K+ channels (KV ), ATP-sensitive K+ channels (KATP ), inward rectifier K+ channels (Kir ), and tandem two-pore K+ channels (K2 P). The activity and expression of vascular K+ channels are changed during major vascular diseases such as hypertension, pulmonary hypertension, hypercholesterolemia, atherosclerosis, and diabetes mellitus. The defective function of K+ channels is commonly associated with impaired vascular responses and is likely to become as a result of changes in K+ channels during vascular diseases. Increased K+ channel function and expression may also help to compensate for increased abnormal vascular tone. There are many pharmacological and genotypic studies which were carried out on the subtypes of K+ channels expressed in variable amounts in different vascular beds. Modulation of K+ channel activity by molecular approaches and selective drug development may be a novel treatment modality for vascular dysfunction in the future. This review presents the basic properties, physiological functions, pathophysiological, and pharmacological roles of the five major classes of K+ channels that have been determined in VSMCs.
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Affiliation(s)
- Muhammed Fatih Dogan
- Department of Pharmacology, Ankara Yildirim Beyazit University, Bilkent, Ankara, 06010, Turkey
| | - Oguzhan Yildiz
- Department of Pharmacology, Gulhane Faculty of Medicine, University of Health Sciences, Etlik, Ankara, 06170, Turkey
| | - Seyfullah Oktay Arslan
- Department of Pharmacology, Ankara Yildirim Beyazit University, Bilkent, Ankara, 06010, Turkey
| | - Kemal Gokhan Ulusoy
- Department of Pharmacology, Gulhane Faculty of Medicine, University of Health Sciences, Etlik, Ankara, 06170, Turkey
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Mahobiya A, Singh TU, Rungsung S, Kumar T, Chandrasekaran G, Parida S, Kumar D. Kaempferol-induces vasorelaxation via endothelium-independent pathways in rat isolated pulmonary artery. Pharmacol Rep 2018; 70:863-874. [DOI: 10.1016/j.pharep.2018.03.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 11/17/2017] [Accepted: 03/20/2018] [Indexed: 12/18/2022]
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21
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Zhao Y, Lv B, Feng X, Li C. Perspective on Biotransformation and De Novo Biosynthesis of Licorice Constituents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:11147-11156. [PMID: 29179542 DOI: 10.1021/acs.jafc.7b04470] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Licorice, an important herbal medicine, is derived from the dried roots and rhizomes of Glycyrrhiza genus plants. It has been widely used in food, pharmaceutical, tobacco, and cosmetics industries with high economic value. However, overexploitation of licorice resources has severely destroyed the local ecology. Therefore, producing bioactive compounds of licorice through the biotransformation and bioengineering methods is a hot spot in recent years. In this perspective, we comprehensively summarize the biotransformation of licorice constituents into high-value-added derivatives by biocatalysts. Furthermore, successful cases and the strategies for de novo biosynthesizing compounds of licorice in microbes have been summarized. This paper will provide new insights for the further research of licorice.
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Affiliation(s)
- Yujia Zhao
- Institute for Biotransformation and Synthetic Biosystem, Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology , Beijing 100081, People's Republic of China
| | - Bo Lv
- Institute for Biotransformation and Synthetic Biosystem, Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology , Beijing 100081, People's Republic of China
| | - Xudong Feng
- Institute for Biotransformation and Synthetic Biosystem, Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology , Beijing 100081, People's Republic of China
| | - Chun Li
- Institute for Biotransformation and Synthetic Biosystem, Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology , Beijing 100081, People's Republic of China
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