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Cao C, Mo Z, Han Y, Luo J, Hu H, Yang D, He Y. Association between alanine aminotransferase to high-density lipoprotein cholesterol ratio and nonalcoholic fatty liver disease: a retrospective cohort study in lean Chinese individuals. Sci Rep 2024; 14:6056. [PMID: 38480862 PMCID: PMC10937981 DOI: 10.1038/s41598-024-56555-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 03/07/2024] [Indexed: 03/17/2024] Open
Abstract
There is limited research on the association between the alanine aminotransferase to high-density lipoprotein cholesterol ratio (ALT/HDL-C) ratio and nonalcoholic fatty liver disease (NAFLD). The purpose of the current research was to look into the connection between the ALT/HDL-C ratio and the risk of NAFLD in lean Chinese individuals. Between January 2010 and December 2014, 11,975 non-obese people participated in this prospective cohort research. The relationship between the ALT/HDL-C ratio and the risk of developing NAFLD was assessed using the Cox proportional-hazards regression model, Cox proportional hazards regression with cubic spline functions and smooth curve fitting, sensitivity analysis, and subgroup analyses. The ALT/HDL-C ratio's potential value as a NAFLD prognostic marker was to be evaluated using the receiver operating characteristic curve analysis. A total of 5419 (45.253%) women comprised the research's participant population, and the research participants' average age was 43.278 ± 14.941 years. The ALT/HDL-C ratio was 11.607 (7.973-17.422) at the median (interquartile ranges). 2087 (17.428%) patients had NAFLD diagnoses throughout a median follow-up of 24.967 months. The study's findings demonstrated a positive connection between the ALT/AHDL-C ratio and the incident NAFLD (HR = 1.037, 95% CI: 1.031-1.042) when adjusting for relevant factors. The ALT/HDL-C ratio and NAFLD risk had a nonlinear connection, with 12.963 as the ratio's inflection point. Effect sizes (HR) were 1.023 (95% CI: 1.017-1.029) and 1.204 (95% CI: 1.171-1.237), respectively, on the right and left sides of the inflection point. The sensitivity analysis also showed how reliable our findings were. According to subgroup analysis, those with BMI < 24 kg/m2 and DBP < 90 mmHg had a stronger correlation between the ALT/HDL-C ratio and NAFLD risk. The current study shows a positive and non-linear connection between the ALT/HDL-C ratio and NAFLD risk in lean Chinese individuals. When the ALT/HDL-C ratio is less than 12.963, it is significantly linked to NAFLD. Therefore, from a therapy standpoint, it is advised to keep the ALT/HDL-C ratio less than the inflection point.
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Affiliation(s)
- Changchun Cao
- Department of Rehabilitation, Shenzhen Dapeng New District Nan'ao People's Hospital, No. 6, Renmin Road, Dapeng New District, Shenzhen, 518000, Guangdong, China
| | - Zihe Mo
- Department of Physical Examination, DongGuan Tungwah Hospital, Dongguan, China
| | - Yong Han
- Department of Emergency, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518000, Guangdong, China
| | - Jiao Luo
- Department of Rehabilitation, Shenzhen Dapeng New District Nan'ao People's Hospital, No. 6, Renmin Road, Dapeng New District, Shenzhen, 518000, Guangdong, China.
| | - Haofei Hu
- Department of Nephrology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518000, Guangdong, China.
| | - Dehua Yang
- Department of Pediatrics, Shenzhen Hengsheng Hospital, No. 20 Yintian Road, Xixiang Street, Baoan District, Shenzhen, 518000, Guangdong, China.
| | - Yongcheng He
- Department of Nephrology, Affiliated Hospital of North Sichuan Medical College, No. 1 Maoyuan South Road, Nanchong, 637000, Sichuan, China.
- Department of Nephrology, Guangdong Province, Shenzhen Hengsheng Hospital, No. 20 Yintian Road, Xixiang Street, Baoan District, Shenzhen, 518000, China.
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Le Y, Guo J, Liu Z, Liu J, Liu Y, Chen H, Qiu J, Wang C, Dou X, Lu D. Calenduloside E ameliorates non-alcoholic fatty liver disease via modulating a pyroptosis-dependent pathway. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117239. [PMID: 37777027 DOI: 10.1016/j.jep.2023.117239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/14/2023] [Accepted: 09/27/2023] [Indexed: 10/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Non-alcoholic fatty liver disease (NAFLD) is a prevalent chronic liver condition that can have multiple underlying causes. There are no satisfactory chemical or biological drugs for the treatment of NAFLD. Longyasongmu, the bark and root of Aralia elata (Miq.) Seem, is used extensively in traditional Chinese medicine (TCM) and has been used in treating diverse liver diseases including NAFLD. Based on Aralia elata (Miq.) Seem as the main ingredient, Longya Gantai Capsules have been approved for use in China for the treatment of acute hepatitis and chronic hepatitis. Calenduloside E (CE), a natural pentacyclic triterpenoid saponin, is a significant component of saponin isolated from the bark and root of Aralia elata (Miq.) Seem. However, the role and mechanism of anti-NAFLD effects of CE is still unclear. AIM OF THE STUDY The objective of this study was to examine the potential mechanisms underlying the protective effect of CE on NAFLD. MATERIALS AND METHODS In this study, an NAFLD model was established by Western diet in apoE-/- mice, followed by treatment with various doses of CE (5 mg/kg, 10 mg/kg). The anti-NAFLD effect of CE was assessed by the liver injury, lipid accumulation, inflammation, and pro-fibrotic phenotype. The mechanism of CE in ameliorating NAFLD was studied through transcriptome sequencing (RNA-seq). In vitro, the mouse hepatocytes (AML-12) were stimulated in lipid mixtures with CE and performed the exploration and validation of the relevant pathways using Western blot, immunofluorescence, etc. RESULTS: The findings revealed a significant improvement in liver injury, lipid accumulation, inflammation, and pro-fibrotic phenotype upon CE administration. Furthermore, RNAseq analysis indicated that the primary pathway through which CE alleviates NAFLD involves pyroptosis-related inflammatory cascade pathways. Furthermore, it was observed that CE effectively suppressed inflammasome-mediated pyroptosis both in vivo and in vitro. Remarkably, the functional enrichment analysis of RNA-seq data revealed that the PI3K-Akt signaling pathway is the primarily Signaling transduction pathway modulated by CE treatment. Subsequent experimental outcomes provided further validation of CE's ability to hinder inflammasome-mediated pyroptosis through the inhibition of PI3K/AKT/NF-κB signaling pathway. CONCLUSIONS These findings present a novel pharmacological role of CE in exerting anti-NAFLD effects by inhibiting pyroptosis signaling pathways.
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Affiliation(s)
- Yifei Le
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China.
| | - Jianan Guo
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China.
| | - Zhijun Liu
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China.
| | - Jing Liu
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China.
| | - Ying Liu
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China.
| | - Hang Chen
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China.
| | - Jiannan Qiu
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China.
| | - Cui Wang
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China.
| | - Xiaobing Dou
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China.
| | - Dezhao Lu
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China.
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Zakaria Z, Othman ZA, Nna VU, Mohamed M. The promising roles of medicinal plants and bioactive compounds on hepatic lipid metabolism in the treatment of non-alcoholic fatty liver disease in animal models: molecular targets. Arch Physiol Biochem 2023; 129:1262-1278. [PMID: 34153200 DOI: 10.1080/13813455.2021.1939387] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 06/01/2021] [Indexed: 12/13/2022]
Abstract
Imbalance in hepatic lipid metabolism can lead to an abnormal triglycerides deposition in the hepatocytes which can cause non-alcoholic fatty liver disease (NAFLD). Four main mechanisms responsible for regulating hepatic lipid metabolism are fatty acid uptake, de novo lipogenesis, lipolysis and fatty acid oxidation. Controlling the expression of transcription factors at molecular level plays a crucial role in NAFLD management. This paper reviews various medicinal plants and their bioactive compounds emphasising mechanisms involved in hepatic lipid metabolism, other important NAFLD pathological features, and their promising roles in managing NAFLD through regulating key transcription factors. Although there are many medicinal plants popularly investigated for NAFLD treatment, there is still little information and scientific evidence available and there has been no research on clinical trials scrutinised on this matter. This review also aims to provide molecular information of medicinal plants in NALFD treatment that might have potentials for future scientifically controlled studies.
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Affiliation(s)
- Zaida Zakaria
- Department of Physiology, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Zaidatul Akmal Othman
- Department of Physiology, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, Kelantan, Malaysia
- Unit of Physiology, Faculty of Medicine, Universiti Sultan Zainal Abidin, Kuala Terengganu, Malaysia
| | - Victor Udo Nna
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medical Sciences, University of Calabar, Calabar, Nigeria
| | - Mahaneem Mohamed
- Department of Physiology, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, Kelantan, Malaysia
- Unit of Integrative Medicine, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, Kelantan, Malaysia
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He D, Zeng L, Chen P. Research progress in pharmacological effects of Aralia elata. Zhejiang Da Xue Xue Bao Yi Xue Ban 2023; 52:616-626. [PMID: 37916310 PMCID: PMC10630058 DOI: 10.3724/zdxbyxb-2023-0147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 08/24/2023] [Indexed: 10/08/2023]
Abstract
The traditional Chinese medicine Aralia elata (Miq.) Seem., also known as Aralia mandshurica, has the effect of "tonifying Qi and calming the mind, strengthening the essence and tonifying the kidneys, and dispelling wind and invigorating blood circulation". It is used in the treatment of neurasthenia, Yang deficiency and Qi deficiency, kidney Qi deficiency, spleen Yang deficiency, water-dampness stagnation, thirst, and bruises. Aralia elata saponins are the main components for the pharmacological effects. From the perspective of modern pharmacological science, Aralia elata has a wide range of effects, including anti-myocardial ischaemia and alleviation of secondary myocardium ischemic reperfusion injury by regulating ionic homeostasis, anti-tumor activity by inhibiting proliferation, promoting apoptosis and enhancing immunity, hypoglycemia and lipid lowering effects by regulating glucose and lipid metabolism, and hepato-protective, neuroprotective, anti-inflammatory/analgesic effects. The studies on pharmacological mechanisms of Aralia elata will be conducive to its development and application in the future. This article reviews the research progress of Aralia elata domestically and internationally in the last two decades and proposes new directions for further research.
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Affiliation(s)
- Dahong He
- School of Medicine, Hangzhou City University, Hangzhou 310015, China.
| | - Linghui Zeng
- School of Medicine, Hangzhou City University, Hangzhou 310015, China.
| | - Peng Chen
- School of Medicine, Hangzhou City University, Hangzhou 310015, China.
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Gao D, Cho CW, Yang Z, Li X, Kang JS. Identification and Quantitation of the Bioactive Components in Wasted Aralia elata Leaves Extract with Endothelial Protective Activity. Molecules 2023; 28:5907. [PMID: 37570877 PMCID: PMC10421206 DOI: 10.3390/molecules28155907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/01/2023] [Accepted: 08/04/2023] [Indexed: 08/13/2023] Open
Abstract
Aralia elata, a renowned medicinal plant with a rich history in traditional medicine, has gained attention for its potential therapeutic applications. However, the leaves of this plant have been largely overlooked and discarded due to limited knowledge of their biological activity and chemical composition. To bridge this gap, a comprehensive study was conducted to explore the therapeutic potential of the 70% ethanol extract derived from Aralia elata leaves (LAE) for the treatment of cardiovascular disease (CVD). Initially, the cytotoxic effects of LAE on human umbilical vein endothelial cells (HUVECs) were assessed, revealing no toxicity within concentrations up to 5 μg/mL. This suggests that LAE could serve as a safe raw material for the development of health supplements and drugs aimed at promoting cardiovascular well-being. Furthermore, the study found that LAE extract demonstrated anti-inflammatory properties in HUVECs by modulating the PI3K/Akt and MAPK signaling pathways. These findings are particularly significant as inflammation plays a crucial role in the progression of CVD. Moreover, LAE extract exhibited the ability to suppress the expression of adhesion molecules VCAM-1 and ICAM-1, which are pivotal in leukocyte migration to inflamed blood vessels observed in various pathological conditions. In conjunction with the investigation on therapeutic potential, the study also established an optimal HPLC-PDA-ESI-MS/MS method to identify and confirm the chemical constituents present in 24 samples collected from distinct regions in South Korea. Tentative identification revealed the presence of 14 saponins and nine phenolic compounds, while further analysis using PCA and PLS-DA allowed for the differentiation of samples based on their geographical origins. Notably, specific compounds such as chlorogenic acid, isochlorogenic acid A, and quercitrin emerged as marker compounds responsible for distinguishing samples from different regions. Overall, by unraveling its endothelial protective activity and identifying key chemical constituents, this research not only offers valuable insights for the development of novel treatments but also underscores the importance of utilizing and preserving natural resources efficiently.
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Affiliation(s)
- Dan Gao
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; (D.G.); (Z.Y.)
| | - Chong-Woon Cho
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea;
| | - Zemin Yang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; (D.G.); (Z.Y.)
- College of Traditional Chinese Medicine, Yunnan University of Chinese Medicine, Kunming 650500, China
| | - Xiwen Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; (D.G.); (Z.Y.)
| | - Jong-Seong Kang
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea;
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Nguyen Thi Thu H, Nguyen Huu Huong D, Nguyen Thi Dieu T, Tran Thi Ngoc H, Pham Van H, Hoang Thi Ngoc A, Nguyen Xuan H, Pham NK, Nguyen Manh C, Nguyen Huu Toan P. In vitro and in silico cytotoxic activities of triterpenoids from the leaves of Aralia dasyphylla Miq. and the assessment of their ADMET properties. J Biomol Struct Dyn 2023; 41:5863-5871. [PMID: 35838156 DOI: 10.1080/07391102.2022.2098822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 07/01/2022] [Indexed: 10/17/2022]
Abstract
From the methanol extract of the leaves of Aralia dasyphylla Miq. (Araliaceae), ten triterpenoids including five ursane-type triterpenoids, ursolic acid (1), 3-O-α-l-arabinopyranosyl ursolic acid (2), ursolic acid 28-O-β-D-glucopyranosyl ester (3), 3-O-[β-D-glucopyranosyl (l→3)]-α-L-arabinopyranosyl ursolic acid (4), and matesaponin 1 (5), and five oleanane-type triterpenoids, elatoside E (6), elatoside F (7), 3-O-[β-D-glucopyranosyl (l→3)]-α-L-arabinopyranosyl oleanolic acid (8), 3-O-α-L-arabinopyranosyl oleanolic acid (9) and oleanolic acid 28-O-β-D-glucopyranosyl ester (10) were isolated. Their structures were elucidated based on 1D-, 2D-NMR and ESI-MS spectra as well as by comparison with those reported in the literature. All isolated compounds were evaluated in vitro for their cytotoxic activities against three human cancer cell lines (HepG2, LU-1 and RD) and in silico by molecular docking studies on human glucose transporter 1 (hGLUT1) protein. The triterpenoids 2, 4, 6, 8 and 9 exhibited good growth inhibition of HepG2 and LU-1 cancer cell lines with IC50 values in the range 1.76 - 7.21 (μM). The oleanane type triterpenoid 8 was the highest cytotoxic compound to inhibit all the tested cancer cell lines with IC50 values of 2.73 ± 0.12, 1.76 ± 0.11, 2.63 ± 0.10 μM, respectively. The in silico molecular docking study results showed that compounds 4 and 6 had the highest binding affinity. Compounds 1-10 were evaluated for their in silico ADMET of absorption, distribution, metabolism, excretion and oral toxicity parameters. Compounds 6, 8, 9 and 10 from A. dasyphylla are potential hGLUT1 inhibitors and worth of further investigation for the prevention or treatment of diabetes and cancer.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Hien Nguyen Thi Thu
- Tay Nguyen Institute for Scientific Research, Vietnam Academy of Science and Technology (VAST), Dalat, Vietnam
- Graduate University of Science and Technology (VAST), Hanoi, Vietnam
| | - Duyen Nguyen Huu Huong
- Tay Nguyen Institute for Scientific Research, Vietnam Academy of Science and Technology (VAST), Dalat, Vietnam
| | - Thuan Nguyen Thi Dieu
- Tay Nguyen Institute for Scientific Research, Vietnam Academy of Science and Technology (VAST), Dalat, Vietnam
| | - Hanh Tran Thi Ngoc
- Tay Nguyen Institute for Scientific Research, Vietnam Academy of Science and Technology (VAST), Dalat, Vietnam
| | - Huyen Pham Van
- Tay Nguyen Institute for Scientific Research, Vietnam Academy of Science and Technology (VAST), Dalat, Vietnam
| | | | - Ha Nguyen Xuan
- Institute of Natural Products Chemistry (VAST), Hanoi, Vietnam
| | - Ngoc Khanh Pham
- Graduate University of Science and Technology (VAST), Hanoi, Vietnam
- Institute of Natural Products Chemistry (VAST), Hanoi, Vietnam
| | - Cuong Nguyen Manh
- Graduate University of Science and Technology (VAST), Hanoi, Vietnam
- Institute of Natural Products Chemistry (VAST), Hanoi, Vietnam
| | - Phan Nguyen Huu Toan
- Tay Nguyen Institute for Scientific Research, Vietnam Academy of Science and Technology (VAST), Dalat, Vietnam
- Graduate University of Science and Technology (VAST), Hanoi, Vietnam
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Li Q, Han Y, Hu H, Zhuge Y. Gamma-glutamyl transferase to high-density lipoprotein cholesterol ratio has a non-linear association with non-alcoholic fatty liver disease: A secondary prospective cohort study in non-obese Chinese adults. Front Med (Lausanne) 2022; 9:995749. [PMID: 36465946 PMCID: PMC9712445 DOI: 10.3389/fmed.2022.995749] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 10/21/2022] [Indexed: 08/13/2023] Open
Abstract
OBJECTIVE The evidence for a relationship between the ratio of gamma-glutamyl transferase (GGT) to high-density lipoprotein cholesterol (HDL-c) and non-alcoholic fatty liver disease (NAFLD) is currently inadequate. This study aimed to investigate the relationship between the GGT/HDL-c ratio and NAFLD. MATERIALS AND METHODS This study is a prospective cohort study that recruited a total of 11,891 non-obese volunteers in a Chinese hospital from January 2010 to December 2014 in a non-selective manner. The Cox proportional-hazards regression model was then used to investigate the relationship between baseline GGT/HDL-c ratio and the probability of developing NAFLD. The non-linear link between the GGT/HDL-c ratio and NAFLD was identified using a Cox proportional hazards regression with cubic spline functions and smooth curve fitting (cubic spline smoothing). Furthermore, we conducted several sensitivity and subgroup analyses. Data had been uploaded to the DATADRYAD website. RESULTS The mean age of study participants was 43.29 ± 14.95 years old, and 6,502 (54.68%) were male. The median (interquartile ranges) of GGT/HDL-c ratio was 15.56 (10.73-23.84). During a median follow-up of 29.35 months, 2028 (17.05%) participants were diagnosed with NAFLD. After adjusting for covariates, the results showed that GGT/HDL-c ratio was positively associated with incident NAFLD (HR = 1.014, 95% CI 1.011-1.017). There was also a non-linear relationship between GGT/HDL-c ratio and NAFLD, and the inflection point of the GGT/HDL-c ratio was 20.35. The effect sizes (HR) on the left and right sides of the inflection point were 1.113 (95% CI 1.096, 1.130) and 1.003 (95% CI 1.000-1.007), respectively. Moreover, the sensitivity analysis demonstrated the robustness of our results. Subgroup analysis showed that GGT/HDL-c ratio was more strongly associated with incident NAFLD in triglyceride (TG) < 1.7 mmol/L participants. In contrast, the weaker association was probed in those with TG ≥ 1.7 mmol/L. CONCLUSION The present study reveals a positive and non-linear relationship between the GGT/HDL-c ratio and NAFLD risk in a non-obese Chinese population. GGT/HDL-c ratio is strongly associated with NAFLD when GGT/HDL-c ratio is less than 20.35. Therefore, maintaining the GGT/HDL-c ratio lower than the inflection point is recommended from a treatment perspective.
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Affiliation(s)
- Qiming Li
- Department of Gastroenterology, Nanjing Medical University Drum Tower Clinical Medical School, Nanjing, Jiangsu, China
| | - Yong Han
- Department of Emergency, Shenzhen Second People’s Hospital, Shenzhen, Guangdong, China
| | - Haofei Hu
- Department of Nephrology, Shenzhen Second People’s Hospital, Shenzhen, Guangdong, China
| | - Yuzheng Zhuge
- Department of Gastroenterology, Nanjing Medical University Drum Tower Clinical Medical School, Nanjing, Jiangsu, China
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Guo H, Ding D, Wang L, Yan J, Ma L, Jin Q. Metformin attenuates osteoclast-mediated abnormal subchondral bone remodeling and alleviates osteoarthritis via AMPK/NF-κB/ERK signaling pathway. PLoS One 2021; 16:e0261127. [PMID: 34914744 PMCID: PMC8675877 DOI: 10.1371/journal.pone.0261127] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 11/28/2021] [Indexed: 11/18/2022] Open
Abstract
This study explored the mechanism by which metformin (Met) inhibits osteoclast activation and determined its effects on osteoarthritis (OA) mice. Bone marrow-derived macrophages were isolated. Osteoclastogenesis was detected using tartrate-resistant acid phosphatase (TRAP) staining. Cell proliferation was evaluated using CCK-8, F-actin rings were detected by immunofluorescence staining, and bone resorption was detected using bone slices. Nuclear factor kappa-B (NF-κB) and nuclear factor of activated T-cell cytoplasmic 1 (NFATc1) were detected using luciferase assays, and the adenosine monophosphate-activated protein kinase (AMPK), NF-κB, and mitogen-activated protein kinase (MAPK) signaling pathways were detected using western blotting. Finally, expression of genes involved in osteoclastogenesis was measured using quantitative polymerase chain reaction. A knee OA mouse model was established by destabilization of the medial meniscus (DMM). Male C57BL/6J mice were assigned to sham-operated, DMM+vehicle, and DMM+Met groups. Met (100 mg/kg/d) or vehicle was administered from the first day postoperative until sacrifice. At 4- and 8-week post OA induction, micro-computed tomography was performed to analyze microstructural changes in the subchondral bone, hematoxylin and eosin staining and Safranin-O/Fast Green staining were performed to evaluate the degenerated cartilage, TRAP-stained osteoclasts were enumerated, and receptor activator of nuclear factor κB ligand (RANKL), AMPK, and NF-κB were detected using immunohistochemistry. BMM proliferation was not affected by Met treatment below 2 mM. Met inhibited osteoclast formation and bone resorption in a dose-dependent manner in vitro. Met suppressed RANKL-induced activation of p-AMPK, NF-κB, phosphorylated extracellular regulated protein kinases (p-ERK) and up-regulation of genes involved in osteoclastogenesis. Met reversed decreases in BV/TV, Tb.Th, Tb.N, and CD, and an increase in Tb.Sp at 4 weeks postoperatively. The number of osteoclasts and OARSI score were decreased by Met without effect on body weight or blood glucose levels. Met inhibited RANKL, p-AMPK, and NF-κB expression in early OA. The mechanism by which Met inhibits osteoclast activation may be associated with AMPK/NF-κB/ERK signaling pathway, indicating a novel strategy for OA treatment.
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Affiliation(s)
- Haohui Guo
- Orthopedics Ward 3, The General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, P.R. China
| | - Dong Ding
- Clinical College, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, P.R. China
| | - Limei Wang
- Clinical College, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, P.R. China
- Medical College, Qingdao Binhai University, West Coast New District, Qingdao, Shandong, P.R. China
| | - Jiangbo Yan
- Clinical College, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, P.R. China
| | - Long Ma
- Orthopedics Ward 3, The General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, P.R. China
- * E-mail: (QJ); (LM)
| | - Qunhua Jin
- Orthopedics Ward 3, The General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, P.R. China
- Clinical College, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, P.R. China
- * E-mail: (QJ); (LM)
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Shikov AN, Narkevich IA, Akamova AV, Nemyatykh OD, Flisyuk EV, Luzhanin VG, Povydysh MN, Mikhailova IV, Pozharitskaya ON. Medical Species Used in Russia for the Management of Diabetes and Related Disorders. Front Pharmacol 2021; 12:697411. [PMID: 34354589 PMCID: PMC8330883 DOI: 10.3389/fphar.2021.697411] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/28/2021] [Indexed: 12/19/2022] Open
Abstract
Background: Polyherbal mixtures called "medical species" are part of traditional and officinal medicine in Russia. This review aimed to analyze medical species used in Russia for the treatment of diabetes and related disorders. The information relevant to medical species, diabetes, and obesity was collected from local libraries, the online service E-library.ru, and Google Scholar. The prediction of the antidiabetic activity for the principal compounds identified in plants was performed using the free web resource PASS Online. Results: We collected and analyzed information about the compositions, specificities of use, and posology of 227 medical species. The medical species represent mixtures of 2-15 plants, while the most frequently mentioned in the literature are species comprising 3-6 plants. The top 10 plants among the 158 mentioned in the literature include Vaccinium myrtillus L., Phaseolus vulgaris L., Taraxacum campylodes G.E. Haglund., Urtica dioica L., Rosa spp., Hypericum spp., Galega officinalis L., Mentha × piperita L., Arctium spp, and Fragaria vesca L. The leading binary combination found in medical species comprises the leaves of V. myrtillus and pericarp of P. vulgaris; leaves of V. myrtillus and leaves of U. dioica; and leaves of V. myrtillus and aerial parts of G. officinalis. In triple combinations, in addition to the above-mentioned components, the roots of T. campylodes are often used. These combinations can be regarded as basic mixtures. Other plants are added to improve the efficacy, treat associated disorders, improve gastrointestinal function, prevent allergic reactions, etc. Meanwhile, an increase in plants in the mixture necessitates advanced techniques for quality control. A feature of medical species in Russia is the addition of fresh juices, birch sap, seaweeds, and adaptogenic plants. Modern studies of the mechanisms of action and predicted activities of the principal compounds from medicinal plants support the rationality of polyherbal mixtures. Nevertheless, the mechanisms are not well studied and reported due to the limited number of compounds. Further investigations with calculations of synergistic or additive indices are important for strengthening the scientific fundamentals for the wider use of medical species in the therapy of diabetes. Two medical species, "Arfazetin" (7 medicinal plants) and "Myrphasinum" (12 medicinal plants), are approved for use in officinal medicine. The efficacy of these species was confirmed in several in vivo experiments and clinical trials. According to modern regulatory rules, additional experiments and clinical trials are required for more detailed investigations of the mechanisms of action and confirmation of efficacy. Conclusion: We believe that the scientifically based utilization of rich plant resources and knowledge of Russian herbal medicine can significantly contribute to the local economy as well as to the sectors seeking natural healing products.
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Affiliation(s)
- Alexander N Shikov
- Saint-Petersburg State Chemical Pharmaceutical University, Saint-Petersburg, Russia
| | - Igor A Narkevich
- Saint-Petersburg State Chemical Pharmaceutical University, Saint-Petersburg, Russia
| | - Alexandra V Akamova
- Saint-Petersburg State Chemical Pharmaceutical University, Saint-Petersburg, Russia
| | - Oksana D Nemyatykh
- Saint-Petersburg State Chemical Pharmaceutical University, Saint-Petersburg, Russia
| | - Elena V Flisyuk
- Saint-Petersburg State Chemical Pharmaceutical University, Saint-Petersburg, Russia
| | | | - Mariia N Povydysh
- Saint-Petersburg State Chemical Pharmaceutical University, Saint-Petersburg, Russia
| | - Iuliia V Mikhailova
- Saint-Petersburg State Chemical Pharmaceutical University, Saint-Petersburg, Russia
| | - Olga N Pozharitskaya
- Murmansk Marine Biological Institute of the Russian Academy of Sciences (MMBI RAS), Murmansk, Russia
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10
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Evangelista-Silva PH, Prates RP, Leite JSM, Moreno LG, Goulart-Silva F, Esteves EA. Intestinal GLUT5 and FAT/CD36 transporters and blood glucose are reduced by a carotenoid/MUFA-rich oil in high-fat fed mice. Life Sci 2021; 279:119672. [PMID: 34097971 DOI: 10.1016/j.lfs.2021.119672] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/20/2021] [Accepted: 05/22/2021] [Indexed: 10/21/2022]
Abstract
AIMS Intestinal nutrient absorption plays a vital role in developing obesity, and nutrient transporters expressed in the enterocytes facilitate this process. Moreover, previous studies have shown that specific foods and diets can affect their cell levels. Herein, we investigated the effects of pequi oil (PO), which is high in several bioactive compounds, on intestinal nutrient transporter levels as well as on intestinal morphology and metabolic biomarkers. MAIN METHODS Groups of male C57BL/6 mice were fed either a standard (C) or a high-fat diet (HFD) and pequi oil (CP and HFDP with PO by gavage at 150 mg/day) for eight weeks. Food intake and body weight were monitored, serum metabolic biomarkers, intestinal transporter levels and histological analyses were performed. KEY FINDINGS PO increased caloric intake without increasing body or fat mass regardless of diet. The HFD group treated with PO reduced fasting blood glucose and villus width. PO did not affect GLUT2, L-FABP, FATP4, NPC1L1, NHE3 or PEPT1 content in CP or HFDP groups. GLUT5 and FAT/CD36 levels were reduced in both CP and HFDP. SIGNIFICANCE Our data suggest that PO attenuated monosaccharide and fatty acid absorption, contributing to lower fasting glycemia and higher food intake without affecting body weight or visceral fat of high-fat feed mice.
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Affiliation(s)
- Paulo Henrique Evangelista-Silva
- Faculty of Biological and Health Sciences, Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Rodovia MGT 367 - Km 583. n. 5000, Alto da Jacuba, Diamantina, MG 39100-000, Brazil; Institute of Biomedical Sciences, Department of Physiology and Biophysics, Universidade de São Paulo - USP, Av. Prof. Dr. Lineu Prestes. 1524, Butantã, São Paulo, SP 05508-000, Brazil
| | - Rodrigo Pereira Prates
- Faculty of Biological and Health Sciences, Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Rodovia MGT 367 - Km 583. n. 5000, Alto da Jacuba, Diamantina, MG 39100-000, Brazil
| | - Jaqueline Santos Moreira Leite
- Institute of Biomedical Sciences, Department of Physiology and Biophysics, Universidade de São Paulo - USP, Av. Prof. Dr. Lineu Prestes. 1524, Butantã, São Paulo, SP 05508-000, Brazil
| | - Lauane Gomes Moreno
- Faculty of Biological and Health Sciences, Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Rodovia MGT 367 - Km 583. n. 5000, Alto da Jacuba, Diamantina, MG 39100-000, Brazil
| | - Francemilson Goulart-Silva
- Institute of Biomedical Sciences, Department of Physiology and Biophysics, Universidade de São Paulo - USP, Av. Prof. Dr. Lineu Prestes. 1524, Butantã, São Paulo, SP 05508-000, Brazil
| | - Elizabethe Adriana Esteves
- Faculty of Biological and Health Sciences, Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Rodovia MGT 367 - Km 583. n. 5000, Alto da Jacuba, Diamantina, MG 39100-000, Brazil.
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11
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Cheng Y, Liu H, Tong X, Liu Z, Zhang X, Chen Y, Wu F, Jiang X, Yu X. Effects of shading on triterpene saponin accumulation and related gene expression of Aralia elata (Miq.) Seem. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 160:166-174. [PMID: 33497847 DOI: 10.1016/j.plaphy.2021.01.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 01/07/2021] [Indexed: 05/12/2023]
Abstract
Aralia elata (Miq.) Seem is widely used as a medicinal plant and functional food in China. In this study, A. elata plants were exposed to full sunlight (CK), 40% shading (LS), 60% shading (MS), and >80% shading (ES) condition to investigate the effects of shading treatments on growth, stress levels, antioxidant enzymes activity, araloside content and related gene expression. The greatest growth and leaf biomass were achieved in 40% shading, and leaf biomass per plant increased by 16.09% compared to the non-shading treatment. Furthermore, the lowest reactive oxide species (ROS) production and lipid peroxidation resulting from increasing antioxidant enzyme activity were also observed in LS treatment. Overall, shading percentage negatively regulated the expression of key enzymes (squalene synthase, SS; squalene epoxidase, SE and β-amyrin synthase, bAS) involved in the saponin biosynthesis, resulting in the greatest yields of total and four selected aralosides in A. elata leaves were achieved in sunlight group. However, the greatest yield of total saponin in the leaves was observed in the 40% shading group due to higher leaf biomass. The results suggest that optimizing the field growing conditions would be important for obtaining the greatest yield of bioactive components. Total saponin and selected aralosides also have a significant correlation with ROS production and antioxidant enzyme activity, these indicated the increased yield of these saponins may be part of a defense response. The study concludes that the production of saponin was the interaction of oxidative stress and photosynthesis.
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Affiliation(s)
- Yao Cheng
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture, Harbin, 150030, China
| | - Hanbing Liu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture, Harbin, 150030, China
| | - Xuejiao Tong
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture, Harbin, 150030, China
| | - Zaimin Liu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture, Harbin, 150030, China
| | - Xin Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture, Harbin, 150030, China
| | - Yingtong Chen
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture, Harbin, 150030, China
| | - Fengzhi Wu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture, Harbin, 150030, China
| | - Xinmei Jiang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture, Harbin, 150030, China.
| | - Xihong Yu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture, Harbin, 150030, China.
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12
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Cheng Y, Liu H, Tong X, Liu Z, Zhang X, Li D, Jiang X, Yu X. Identification and analysis of CYP450 and UGT supergene family members from the transcriptome of Aralia elata (Miq.) seem reveal candidate genes for triterpenoid saponin biosynthesis. BMC PLANT BIOLOGY 2020; 20:214. [PMID: 32404131 PMCID: PMC7218531 DOI: 10.1186/s12870-020-02411-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 04/28/2020] [Indexed: 05/12/2023]
Abstract
BACKGROUND Members of the cytochrome P450 (CYP450) and UDP-glycosyltransferase (UGT) gene superfamily have been shown to play essential roles in regulating secondary metabolite biosynthesis. However, the systematic identification of CYP450s and UGTs has not been reported in Aralia elata (Miq.) Seem, a highly valued medicinal plant. RESULTS In the present study, we conducted the RNA-sequencing (RNA-seq) analysis of the leaves, stems, and roots of A. elata, yielding 66,713 total unigenes. Following annotation and KEGG pathway analysis, we were able to identify 64 unigenes related to triterpenoid skeleton biosynthesis, 254 CYP450s and 122 UGTs, respectively. A total of 150 CYP450s and 92 UGTs encoding > 300 amino acid proteins were utilized for phylogenetic and tissue-specific expression analyses. This allowed us to cluster 150 CYP450s into 9 clans and 40 families, and then these CYP450 proteins were further grouped into two primary branches: A-type (53%) and non-A-type (47%). A phylogenetic analysis of 92 UGTs and other plant UGTs led to clustering into 16 groups (A-P). We further assessed the expression patterns of these CYP450 and UGT genes across A. elata tissues, with 23 CYP450 and 16 UGT members being selected for qRT-PCR validation, respectively. From these data, we identified CYP716A295 and CYP716A296 as the candidate genes most likely to be associated with oleanolic acid synthesis, while CYP72A763 and CYP72A776 were identified as being the most likely to play roles in hederagenin biosynthesis. We also selected five unigenes as the best candidates for oleanolic acid 3-O-glucosyltransferase. Finally, we assessed the subcellular localization of three CYP450 proteins within Arabidopsis protoplasts, highlighting the fact that they localize to the endoplasmic reticulum. CONCLUSIONS This study presents a systematic analysis of the CYP450 and UGT gene family in A. elata and provides a foundation for further functional characterization of these two multigene families.
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Affiliation(s)
- Yao Cheng
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Hanbing Liu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Xuejiao Tong
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Zaimin Liu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Xin Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Dalong Li
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Xinmei Jiang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China.
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China.
| | - Xihong Yu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China.
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China.
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Brygadyrenko VV, Lieshchova MA, Bilan MV, Tishkina NM, Horchanok AV. Effect of alcohol tincture of Aralia elata on the organism of rats and their gut microbiota against the background of excessive fat diet. REGULATORY MECHANISMS IN BIOSYSTEMS 2019. [DOI: 10.15421/021973] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Pharmacological effects of the medicinal plant Aralia elata (Miq.) Seem. 1868 (Araliaceae) are related to presence of over 150 secondary metabolites, including flavonoids, sterols, polysaccharides, terpenoid saponins and terpenoid acids, though the main biologically active substances of A. elata are saponins and flavonoids. Some clinical tests and experimental studies have proved the influence of A. elata on the organism through increase in physical work capacity, exerting an anti-stress effect against a broad range of harmful factors, including stress from cold, immobilization, ultraviolet radiation and low pressure. The literature also reports the anti-ulcer, anti-secretory, antifungal, anti-tumour, and antimicrobial activity of preparations from this plant. In our laboratory experiment, we determined that ethanolic tincture of A. elata has no effect on the intensity of growth of body weight of young rats against the background of excessive content of fat in their diet. Excessive fat-feeding of male rats leads mostly to disorders in the functioning of the liver and development of steatosis. This was accompanied by reduction in relative mass of the liver, increase in activity of hepatic enzymes, dysproteinemia, increase in the level of bilirubin and decrease in the level of urea. Additional use of 0.1% ethanol led to impaired functioning of the kidneys, reduction of their relative mass, signs of dehydration, increase in the level of creatinine and total calcium in the blood. Use of ethanolic tincture of A. elata mitigates negative excess of fat, is accompanied by normalization of indices of mass of the organs, less notable dysproteinemia, impairment in the level of creatinine, glucose, urea, cholesterol, bilirubin and total calcium. Ethanolic tincture of A. elata has a low immunosuppressive action, against the background of a high fat diet it leads to increase in the amount of typical Escherichia сoli, decrease in Еnterococcus spp. and Enterobacter spp., significant decrease and in high concentrations (0.1% ethanolic tincture of A. elata) elimination of bacteria of Clostridium and Klebsiella genera, and also various yeast fungi in the intestine. In the examined male rats, against the background of excess of fat in the diet, no serious changes in the composition of the normal gut microbiota (Bifidobacterium spp., Lactobacillus spp., Proteus spp., Staphylococcus spp., Candida spp.) was observed, nor were any lactose-negative enterobacteria (Citrobacter genus) found. Perspectives of further research include determining histological, histochemical and immune-histological changes in the organs of laboratory animals under the effect of ethanolic tincture of A. elata following excessive accumulation of fat.
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Inamdar S, Joshi A, Malik S, Boppana R, Ghaskadbi S. Vitexin alleviates non-alcoholic fatty liver disease by activating AMPK in high fat diet fed mice. Biochem Biophys Res Commun 2019; 519:106-112. [PMID: 31472955 DOI: 10.1016/j.bbrc.2019.08.139] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 08/25/2019] [Indexed: 01/14/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a most common liver disorder characterized by accumulation of fat in the liver and currently there is no approved treatment for it. Obesity and diabetes being leading cause of NAFLD, compounds having anti-obesity activity and potential to reduce insulin resistance are considered suitable candidate for NAFLD treatment. In this study, we checked effect of vitexin, a naturally occurring flavonoid, on high fat diet (HFD) induced NAFLD in C57BL/6J mice. In presence of vitexin, significant reduction in body and liver weight, triglyceride and cholesterol content in serum and liver was observed. Serum Alanine aminotransferase (ALT) and Aspartate aminotransferase (AST) levels were reduced significantly by vitexin which were elevated in HFD group whereas serum lipase activity remained unchanged. Vitexin suppressed de novo lipogenesis by downregulating expression of Peroxisome proliferator-activated receptor γ (PPARγ), CCAAT/enhancer-binding protein-α (C/EBP-α), sterol regulatory element-binding protein-1c (SREBP-1c), Fatty acid synthase (FAS) and Acetyl-CoA Carboxylase (ACC). Additionally, it also enhanced fatty acid oxidation and lipolysis by upregulating Peroxisome proliferator-activated receptor α (PPAR-α), carnitine palmitoyltransferase-1a (CPT-1a) and Adipose triglyceride lipase (ATGL). Inhibition of lipogenesis and activation of lipolysis and fatty acid oxidation by vitexin was found to be mediated by activation of AMP-activated protein kinase (AMPK). Vitexin also improved insulin signalling by activating insulin receptor substrate-1 (IRS-1) and its downstream target AKT. AMPK activation of vitexin was possibly through binding of vitexin to leptin receptor (LepR) which was confirmed by molecular docking studies and by observed enhanced expression of LepR. Thus, we propose that vitexin alleviates NAFLD by activating AMPK possibly by binding to LepR.
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Affiliation(s)
- Shrirang Inamdar
- Department of Zoology, Savitribai Phule Pune University, Pune, 411007, India
| | - Ankita Joshi
- Department of Zoology, Savitribai Phule Pune University, Pune, 411007, India
| | - Sajad Malik
- Department of Zoology, Savitribai Phule Pune University, Pune, 411007, India
| | | | - Saroj Ghaskadbi
- Department of Zoology, Savitribai Phule Pune University, Pune, 411007, India.
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Chronic Alcohol Exposure Induced Neuroapoptosis: Diminishing Effect of Ethyl Acetate Fraction from Aralia elata. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7849876. [PMID: 31210848 PMCID: PMC6532276 DOI: 10.1155/2019/7849876] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 04/15/2019] [Accepted: 04/22/2019] [Indexed: 12/13/2022]
Abstract
An ethyl acetate fraction from Aralia elata (AEEF) was investigated to confirm its neuronal cell protective effect on ethanol-induced cytotoxicity in MC-IXC cells and its ameliorating effect on neurodegeneration in chronic alcohol-induced mice. The neuroprotective effect was examined by methylthiazolyldiphenyl-tetrazolium bromide (MTT) and 2',7'-dichlorodihydrofluorescein diacetate (DCF-DA) assays. As a result, AEEF reduced alcohol-induced cytotoxicity and oxidative stress. To evaluate the improvement of learning, memory ability, and spatial cognition, Y-maze, passive avoidance, and Morris water maze tests were conducted. The AEEF groups showed an alleviation of the decrease in cognitive function in alcohol-treated mice. Then, malondialdehyde (MDA) levels and the superoxide dismutase (SOD) content were measured to evaluate the antioxidant effect of AEEF in the brain tissue. Treatment with AEEF showed a considerable ameliorating effect on biomarkers such as SOD and MDA content in alcohol-induced mice. To assess the cerebral cholinergic system involved in neuronal signaling, acetylcholinesterase (AChE) activity and acetylcholine (ACh) content were measured. The AEEF groups showed increased ACh levels and decreased AChE activities. In addition, AEEF prevented alcohol-induced neuronal apoptosis via improvement of mitochondrial activity, including reactive oxygen species levels, mitochondrial membrane potential, and adenosine triphosphate content. AEEF inhibited apoptotic signals by regulating phosphorylated c-Jun N-terminal kinases (p-JNK), phosphorylated protein kinase B (p-Akt), Bcl-2-associated X protein (BAX), and phosphorylated Tau (p-Tau). Finally, the bioactive compounds of AEEF were identified as caffeoylquinic acid (CQA), 3,5-dicaffeoylquinic acid (3,5-diCQA), and chikusetsusaponin IVa using the UPLC-Q-TOF-MS system.
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Luo Y, Lu S, Ai Q, Zhou P, Qin M, Sun G, Sun X. SIRT1/AMPK and Akt/eNOS signaling pathways are involved in endothelial protection of total aralosides of Aralia elata
(Miq) Seem against high-fat diet-induced atherosclerosis in ApoE−/− mice. Phytother Res 2019; 33:768-778. [DOI: 10.1002/ptr.6269] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/27/2018] [Accepted: 12/03/2018] [Indexed: 12/30/2022]
Affiliation(s)
- Yun Luo
- Institute of Medicinal Plant Development; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine; Beijing China
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine; Ministry of Education; Beijing China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glyeolipid Metabolism Disorder Disease; State Administration of Traditional Chinese Medicine; Beijing China
| | - Shan Lu
- Institute of Medicinal Plant Development; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine; Beijing China
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine; Ministry of Education; Beijing China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glyeolipid Metabolism Disorder Disease; State Administration of Traditional Chinese Medicine; Beijing China
| | - Qidi Ai
- School of Pharmaceutical Science; Hunan University of Chinese Medicine; Changsha China
| | - Ping Zhou
- Institute of Medicinal Plant Development; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine; Beijing China
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine; Ministry of Education; Beijing China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glyeolipid Metabolism Disorder Disease; State Administration of Traditional Chinese Medicine; Beijing China
| | - Meng Qin
- Institute of Medicinal Plant Development; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine; Beijing China
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine; Ministry of Education; Beijing China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glyeolipid Metabolism Disorder Disease; State Administration of Traditional Chinese Medicine; Beijing China
| | - Guibo Sun
- Institute of Medicinal Plant Development; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine; Beijing China
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine; Ministry of Education; Beijing China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glyeolipid Metabolism Disorder Disease; State Administration of Traditional Chinese Medicine; Beijing China
| | - Xiaobo Sun
- Institute of Medicinal Plant Development; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine; Beijing China
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine; Ministry of Education; Beijing China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glyeolipid Metabolism Disorder Disease; State Administration of Traditional Chinese Medicine; Beijing China
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Zhou P, Xie W, Luo Y, Lu S, Dai Z, Wang R, Sun G, Sun X. Protective Effects of Total Saponins of Aralia elata (Miq.) on Endothelial Cell Injury Induced by TNF-α via Modulation of the PI3K/Akt and NF-κB Signalling Pathways. Int J Mol Sci 2018; 20:ijms20010036. [PMID: 30577658 PMCID: PMC6337668 DOI: 10.3390/ijms20010036] [Citation(s) in RCA: 29] [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: 10/12/2018] [Revised: 12/11/2018] [Accepted: 12/18/2018] [Indexed: 12/19/2022] Open
Abstract
Atherosclerosis is an arterial disease associated with inflammation. Hence, the discovery of novel therapeutic agents for suppressing inflammatory responses is urgent and vital for the treatment of atherosclerosis in cardiovascular diseases. The total saponins of Aralia elata (Miq.) Seem. (TAS) are the main components extracted from the Chinese traditional herb Longya Aralia chinensis L., a folk medicine used in Asian countries for treating numerous diseases, enhancing energy and boosting immunity. However, the protective effects of TAS against inflammation-triggered vascular endothelial dysfunction, a critical early event during the course of atherosclerosis, and the potential mechanisms of this protection have been not demonstrated. Accordingly, the aim of this study was to investigate the anti-inflammatory and anti-apoptotic effects and the protective mechanisms of TAS, and show how TAS ameliorates human umbilical vein endothelial cell (HUVEC) damage caused by tumour necrosis factor-α (TNF-α). The results indicated that TAS exerted cytoprotective effects by inhibiting TNF-α-triggered HUVEC apoptosis, mitochondrial membrane potential depolarisation, and the regulation of inflammatory factors (IL-6, MCP-1, and VCAM-1) while suppressing NF-κB transcription. Furthermore, this phenomenon was related to activation of the phosphoinositide 3-kinase (PI3K)/Akt signalling pathway. Blocking the Akt pathway with LY294002, a PI3K inhibitor, reversed the cytoprotective effect of TAS against TNF-α-induced endothelial cell death. Moreover, LY294002 partially abolished the effects of TAS on the upregulation of the Bcl-2 family of proteins and the downregulation of Bax protein expression. In conclusion, the results of our study suggest that TAS suppresses the inflammation and apoptosis of HUVECs induced by TNF-α and that PI3K/Akt signalling plays a key role in promoting cell survival and anti-inflammatory reactions during this process.
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Affiliation(s)
- Ping Zhou
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing 100193, China.
- Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Beijing 100193, China.
| | - Weijie Xie
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing 100193, China.
- Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Beijing 100193, China.
| | - Yun Luo
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing 100193, China.
- Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Beijing 100193, China.
| | - Shan Lu
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing 100193, China.
- Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Beijing 100193, China.
| | - Ziru Dai
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing 100193, China.
- Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Beijing 100193, China.
| | - Ruiying Wang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing 100193, China.
- Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Beijing 100193, China.
| | - Guibo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing 100193, China.
- Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Beijing 100193, China.
| | - Xiaobo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China.
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China.
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Beijing 100193, China.
- Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Beijing 100193, China.
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18
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Losacco MC, de Almeida CFT, Hijo AHT, Bargi-Souza P, Gama P, Nunes MT, Goulart-Silva F. High-fat diet affects gut nutrients transporters in hypo and hyperthyroid mice by PPAR-a independent mechanism. Life Sci 2018; 202:35-43. [DOI: 10.1016/j.lfs.2018.03.053] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/22/2018] [Accepted: 03/27/2018] [Indexed: 10/17/2022]
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19
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Huang X, Wang Z, Li D, Huang Z, Dong X, Li C, Lan J. Study of microRNAs targeted Dvl2 on the osteoblasts differentiation of rat BMSCs in hyperlipidemia environment. J Cell Physiol 2018; 233:6758-6766. [PMID: 29226968 DOI: 10.1002/jcp.26392] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 12/04/2017] [Indexed: 01/31/2023]
Abstract
Dishevelled 2 (Dvl-2), a key mediator of the wnt/β-catenin signaling pathway, plays critical roles in osteoblasts differentiation in hyperlipidemia environment. In our previous study, we observed a strong correlation between increased dvl2 expression and decreased new bone formation around implants in a rat hyperlipidemia implant surgery model. However, transcriptional regulation of Dvl2 by microRNAs in this process remains unknown. In the current study, we searched in online database and identified four significantly up-regulated miRNAs, miR-21-5p, miR-29c-3p, miR-138-5p, and miR-351-5p that could potentially regulate Dvl2. Using Western blot and dual-luciferase assays, we confirmed that miR29c-3p suppresses Dvl2 expression by binding to its 3'-UTR. Our results suggest a novel transcriptional regulation mechanism of Dvl2 by miR-29c-3p in osteoblasts differentiation of BMSCs.
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Affiliation(s)
- Xin Huang
- Department of Prosthodontics, School of Dentistry, Shandong University, Jinan, China
| | - Zhifeng Wang
- Department of Pediatric Dentistry, School of Dentistry, Shandong University, Jinan, China
| | - Duoduo Li
- Department of Prosthodontics, School of Dentistry, Shandong University, Jinan, China
| | - Zhengfei Huang
- Department of Prosthodontics, School of Dentistry, Shandong University, Jinan, China
| | - Xiaofei Dong
- Department of Prosthodontics, School of Dentistry, Shandong University, Jinan, China
| | - Chuanhua Li
- Department of Prosthodontics, School of Dentistry, Shandong University, Jinan, China
| | - Jing Lan
- Department of Prosthodontics, School of Dentistry, Shandong University, Jinan, China
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20
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Kim YS, Kim M, Choi MY, Lee DH, Roh GS, Kim HJ, Kang SS, Cho GJ, Park KH, Kim SJ, Yoo JM, Choi WS. Aralia elata (Miq) Seem Extract Decreases O-GlcNAc Transferase Expression and Retinal Cell Death in Diabetic Mice. J Med Food 2017; 20:989-1001. [DOI: 10.1089/jmf.2016.3891] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Yoon Sook Kim
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, South Korea
| | - Minjun Kim
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, South Korea
| | - Mee Young Choi
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, South Korea
| | - Dong Hoon Lee
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, South Korea
| | - Gu Seob Roh
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, South Korea
| | - Hyun Joon Kim
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, South Korea
| | - Sang Soo Kang
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, South Korea
| | - Gyeong Jae Cho
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, South Korea
| | - Ki Hun Park
- Division of Applied Life Science, Institute of Agriculture Life Science, Graduate School of Gyeongsang National University, Jinju, South Korea
| | - Seong-Jae Kim
- Department of Ophthalmology, Gyeongsang National University School of Medicine, Jinju, South Korea
| | - Ji-Myong Yoo
- Department of Ophthalmology, Gyeongsang National University School of Medicine, Jinju, South Korea
| | - Wan Sung Choi
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, South Korea
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21
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Chen FF, Wang JT, Zhang LX, Xing SF, Wang YX, Wang K, Deng SL, Zhang JQ, Tang L, Wu HS. Oleanolic acid derivative DKS26 exerts antidiabetic and hepatoprotective effects in diabetic mice and promotes glucagon-like peptide-1 secretion and expression in intestinal cells. Br J Pharmacol 2017. [PMID: 28627773 DOI: 10.1111/bph.13921] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND PURPOSE Glucagon-like peptide-1 (GLP-1) is an important target for diabetes therapy based on its key role in maintaining glucose and lipid homeostasis. This study was designed to investigate antidiabetic and hepatoprotective effects of a novel oleanolic acid derivative DKS26 in diabetic mice and elucidate its underlying GLP-1 related antidiabetic mechanisms in vitro and in vivo. EXPERIMENTAL APPROACH The therapeutic effects of DKS26 were investigated in streptozotocin (STZ)-induced and db/db diabetic mouse models. Levels of plasma glucose, glycosylated serum protein (GSP), lipid profiles, insulin, alanine aminotransferase (ALT) and aspartate aminotransferase (AST), oral glucose tolerance (OGT), pancreatic islets and hepatic histopathological morphology, liver lipid levels and expression of pro-inflammatory cytokines were assessed. Intestinal NCI-H716 cells and diabetic models were used to further validate its potential GLP-1-related antidiabetic mechanisms. KEY RESULTS DKS26 treatment (100 mg·kg-1 ·day-1 ) decreased plasma levels of glucose, GSP, ALT and AST; ameliorated OGT and plasma lipid profiles; augmented plasma insulin levels; alleviated islets and hepatic pathological morphology; and reduced liver lipid accumulation, inflammation and necrosis in vivo. Furthermore, DKS26 enhanced GLP-1 release and expression, accompanied by elevated levels of cAMP and phosphorylated PKA in vitro and in vivo. CONCLUSION AND IMPLICATIONS DKS26 exerted hypoglycaemic, hypolipidaemic and islets protective effects, which were associated with an enhanced release and expression of GLP-1 mediated by the activation of the cAMP/PKA signalling pathway, and alleviated hepatic damage by reducing liver lipid levels and inflammation. These findings firmly identified DKS26 as a new viable therapeutic option for diabetes control.
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Affiliation(s)
- Fei-Fei Chen
- Experiment Education Center for Pharmaceutical Sciences, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.,Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Jian-Ta Wang
- College of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Li-Xia Zhang
- Experiment Education Center for Pharmaceutical Sciences, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Shu-Fang Xing
- Experiment Education Center for Pharmaceutical Sciences, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Yun-Xia Wang
- Experiment Education Center for Pharmaceutical Sciences, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Kai Wang
- Experiment Education Center for Pharmaceutical Sciences, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Shu-Li Deng
- Department of Conservative Dentistry, Affiliated Hospital of Stomatology, Zhejiang University, Hangzhou, China
| | - Ji-Quan Zhang
- College of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Lei Tang
- College of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Hao-Shu Wu
- Experiment Education Center for Pharmaceutical Sciences, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.,Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
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22
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Zhang J, Liu R, Kuang HY, Gao XY, Liu HL. Protective treatments and their target retinal ganglion cells in diabetic retinopathy. Brain Res Bull 2017; 132:53-60. [DOI: 10.1016/j.brainresbull.2017.05.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Accepted: 05/10/2017] [Indexed: 12/19/2022]
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23
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Santos IB, de Bem GF, Cordeiro VSC, da Costa CA, de Carvalho LCRM, da Rocha APM, da Costa GF, Ognibene DT, de Moura RS, Resende AC. Supplementation with Vitis vinifera L. skin extract improves insulin resistance and prevents hepatic lipid accumulation and steatosis in high-fat diet-fed mice. Nutr Res 2017; 43:69-81. [PMID: 28739056 DOI: 10.1016/j.nutres.2017.05.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 04/30/2017] [Accepted: 05/11/2017] [Indexed: 02/06/2023]
Abstract
Nonalcoholic fatty liver disease is one of the most common complications of obesity. The Vitis vinifera L. grape skin extract (ACH09) is an important source of polyphenols, which are related to its antioxidant and antihyperglycemic activities. We hypothesized that ACH09 could also exert beneficial effects on metabolic disorders associated with obesity and evaluated ACH09's influence on high-fat (HF) diet-induced hepatic steatosis and insulin resistance in C57BL/6 mice. The animals were fed a standard diet (10% fat, control) or an HF diet (60% fat, HF) with or without ACH09 (200mg/[kg d]) for 12weeks. Our results showed that ACH09 reduced HF diet-induced body weight gain, prevented hepatic lipid accumulation and steatosis, and improved hyperglycemia and insulin resistance. The underlying mechanisms of these beneficial effects of ACH09 may involve the activation of hepatic insulin-signaling pathway because the expression of phosphorylated insulin receptor substrate-1, phosphatidylinositol 3-kinase, phosphorylated Akt serine/threonine kinase 1, and glucose transporter 2 was increased by ACH09 and correlated with improvement of hyperglycemia, hyperinsulinemia, and insulin resistance. ACH09 reduced the expression of the lipogenic factor sterol regulatory-element binding protein-1c in the liver and upregulated the lipolytic pathway (phosphorylated liver kinase B1/phosphorylated adenosine-monophosphate-activated protein kinase), which was associated with normal hepatic levels of triglyceride and cholesterol and prevention of steatosis. ACH09 prevented the hepatic oxidative damage in HF diet-fed mice probably by restoration of antioxidant activity. In conclusion, ACH09 protected mice from HF diet-induced obesity, insulin resistance, and hepatic steatosis. The regulation of hepatic insulin signaling pathway, lipogenesis, and oxidative stress may contribute to ACH09's protective effect.
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Affiliation(s)
- Izabelle Barcellos Santos
- Department of Pharmacology, Institute of Biology, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Graziele Freitas de Bem
- Department of Pharmacology, Institute of Biology, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | | | - Cristiane Aguiar da Costa
- Department of Pharmacology, Institute of Biology, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | | | - Ana Paula Machado da Rocha
- Department of Pharmacology, Institute of Biology, Rio de Janeiro State University, Rio de Janeiro, Brazil; Department of Physiological Sciences, Biomedical Institute, Federal University of the State of Rio de Janeiro, Brazil
| | - Gisele França da Costa
- Department of Pharmacology, Institute of Biology, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Dayane Teixeira Ognibene
- Department of Pharmacology, Institute of Biology, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Roberto Soares de Moura
- Department of Pharmacology, Institute of Biology, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Angela Castro Resende
- Department of Pharmacology, Institute of Biology, Rio de Janeiro State University, Rio de Janeiro, Brazil.
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24
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Wang XX, Ye T, Li M, Li X, Qiang O, Tang CW, Liu R. Effects of octreotide on hepatic glycogenesis in rats with high fat diet‑induced obesity. Mol Med Rep 2017; 16:109-118. [PMID: 28534956 PMCID: PMC5482138 DOI: 10.3892/mmr.2017.6586] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 02/27/2017] [Indexed: 02/05/2023] Open
Abstract
Reduced hepatic glycogenesis is one of the most important causes of metabolic abnormalities in non‑alcoholic fatty liver disease. Octreotide, a somatostatin analogue, has been demonstrated to promote weight loss and improve metabolic disorders in mice with high fat diet (HFD)‑induced obesity. However, whether octreotide affects hepatic glycogenesis is unknown. The aim of the present study was to verify the effects of octreotide on hepatic glycogenesis in rats with HFD‑induced obesity. Male Sprague‑Dawley rats were fed a standard diet or a HFD for 24 weeks. Obese rats from the HFD group were further divided into a HFD‑control group and an octreotide‑administered group. Rats in the latter group were injected with octreotide for 8 days. Glucose and insulin tolerance tests were performed, and the area under the curve (AUC) was calculated. Following sacrifice, their body weights and lengths, fasting plasma glucose (FPG), fasting insulin (FINS), serum triglyceride (TG), total cholesterol (TC), free fatty acid (FFA), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels were measured. In addition, Lee's index and the homeostatic model assessment index were calculated. Hepatic TG, FFA levels and glycogen content were first determined. Hepatic steatosis in the obese rats was assessed based on hematoxylin and eosin and Oil Red O staining. Human hepatoblastoma HepG2 cells were divided into a control group, a palmitate (PA)‑treated group and a PA + octreotide‑treated group. Establishment of the in vitro fatty liver model using HepG2 cells was confirmed by Oil Red O staining. The expression of phosphorylated Akt and glycogen synthase kinase 3β (GSK3β) was detected by western blotting, and glycogen synthase (GS) mRNA levels were detected by reverse transcription‑quantitative polymerase chain reaction. Compared with the control group, the body weight, Lee's index, AUC of the intraperitoneal glucose tolerance test and intraperitoneal insulin tolerance test, levels of FPG, FINS, TG, TC, FFA, ALT and AST, and HOMA index values were significantly increased in the obese rats. The body weight, levels of FPG and FINS, and the HOMA index were significantly reduced following octreotide treatment, whereas the decrease in Lee's index, the blood levels of ALT, AST, TC, TG and FFA, and the AUC did not reach statistical significance. Hepatic TG and FFA levels were significantly increased and hepatic glycogen content was significantly decreased in rats with HFD‑induced obesity when compared with those in the control group. Octreotide intervention restored these alterations. The expression levels of phosphorylated Akt and GSK3β protein expression, as well as GS mRNA levels in the HFD group were lower when compared with those in the control group, whereas octreotide treatment reversed these reductions. The in vitro experiments demonstrated that the reduced levels of phosphorylated Akt and GSK3β protein, and GS mRNA in the PA‑treated group were significantly reversed by octreotide treatment. In conclusion, the results indicate that octreotide improved hepatic glycogenesis and decreased FPG concentration in rats with HFD‑induced obesity. These mechanisms may be associated with increased GS activity via the promotion of GSK3β phosphorylation. Therefore, octreotide may be regarded as a novel therapeutic strategy for HFD‑induced obesity and obesity‑associated metabolic disorders.
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Affiliation(s)
- Xiao-Xia Wang
- Division of Peptides Related to Human Disease, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Ting Ye
- Division of Peptides Related to Human Disease, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Mao Li
- Division of Peptides Related to Human Disease, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Xian Li
- Division of Peptides Related to Human Disease, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Ou Qiang
- Division of Peptides Related to Human Disease, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Cheng-Wei Tang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Rui Liu
- Division of Peptides Related to Human Disease, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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25
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Sun J, Ye X, Xie M, Ye J. Induction of triglyceride accumulation and mitochondrial maintenance in muscle cells by lactate. Sci Rep 2016; 6:33732. [PMID: 27645401 PMCID: PMC5028732 DOI: 10.1038/srep33732] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 09/01/2016] [Indexed: 11/02/2022] Open
Abstract
Muscle exercise induces intramuscular triglyceride (TG) accumulation and promotes mitochondrial maintenance in myotubes. However, the mechanism underlying exercise effects remains unknown. In this study, lactic acid was tested as a signaling molecule in C2C12 myotubes to understand the mechanism. Intracellular TG storage was induced in the cells by sodium lactate. The lactate activity was observed with an inhibition of the cAMP-PKA pathway as indicated by a reduction in the phosphorylation status of CREB (pCREB). Induction of pCREB signal by forskolin was blocked by pretreatment of cells with lactate. The impact of lactate on mitochondrial function was examined with a focus on the activities of two enzymes, MCAT (malonylCoA:ACP transferase) and PDH (pyruvate dehydrogenase). The enzyme activities were induced in the cells by lactate. Expression of the lactate receptor (GPR81) and lactate transporters (MCT1/4) were induced as well by lactate. The lactate activities were observed at concentrations between 4-64 mM, and were not dependent on the increase in intracellular pyruvate. Pyruvate treatment did not generate the same effects in the cells. Those results suggest that lactate may induce intramuscular TG storage and mitochondrial maintenance in myotubes through inhibition of the cAMP pathway by activation of GPR81 in a positive feedback manner.
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Affiliation(s)
- Jingquan Sun
- Sport Science College of Beijing Sport University, Beijing, China.,Antioxidant and Gene Regulation Laboratory, Pennington Biomedical Research Center, Louisiana State University, Louisiana, USA
| | - Xin Ye
- Antioxidant and Gene Regulation Laboratory, Pennington Biomedical Research Center, Louisiana State University, Louisiana, USA
| | - Minhao Xie
- China Institute of Sports Medicine, Beijing, China
| | - Jianping Ye
- Antioxidant and Gene Regulation Laboratory, Pennington Biomedical Research Center, Louisiana State University, Louisiana, USA
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