1
|
Chen Q, Deng X, Zhang K, Kang Y, Jiao M, Zhang J, Wang C, Li F. Changes to PUFA-PPAR pathway during mesaconitine induced myocardial coagulative necrosis. Food Chem Toxicol 2023; 177:113831. [PMID: 37182599 DOI: 10.1016/j.fct.2023.113831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/10/2023] [Accepted: 05/11/2023] [Indexed: 05/16/2023]
Abstract
Coagulation necrosis is characterized by the denaturation of structural proteins and lysosomal enzymes; its occurrence in myocardium can lead to heart failure. Current studies on myocardial injury primarily focus on inflammation, hypertrophy, and hemorrhage, while those on myocardial coagulation necrosis are still limited. Mesaconitine (MA), a C19 diester diterpenoid alkaloid derived from Aconitum carmichaelii Debx, has strong cardiotoxicity. During this study, the myocardial cells of SD rats showed significant coagulative necrosis after 6 days of oral administration of MA at a dose of 1.2 mg/kg/day. Investigations of its biological mechanism showed abnormal levels of polyunsaturated fatty acids (PUFAs) and Peroxisome proliferator activated receptors Alpha (PPARα) pathway related protein. Moreover, MA affected the PPARα signaling pathway through interactions with proteins such as POR, TFAM and GPD1, indirectly indicating that these above proteins are important targets for blocking myocardial coagulative necrosis. This study thus discusses the effects of the use of cardiotoxic compound, MA, to initiate myocardial coagulative necrosis and its associated toxic mechanisms.
Collapse
Affiliation(s)
- Qian Chen
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Liangxiang Town, Fangshan District, Beijing, 102488, China.
| | - Xinqi Deng
- School of Life Sciences, Beijing University of Chinese Medicine, Liangxiang Town, Fangshan District, Beijing, 102488, China.
| | - Kai Zhang
- School of Life Sciences, Beijing University of Chinese Medicine, Liangxiang Town, Fangshan District, Beijing, 102488, China.
| | - Yingquan Kang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Liangxiang Town, Fangshan District, Beijing, 102488, China.
| | - Mingjie Jiao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Liangxiang Town, Fangshan District, Beijing, 102488, China.
| | - Jia Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Liangxiang Town, Fangshan District, Beijing, 102488, China.
| | - Chunguo Wang
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Liangxiang Town, Fangshan District, Beijing, 102488, China.
| | - Fei Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Liangxiang Town, Fangshan District, Beijing, 102488, China.
| |
Collapse
|
2
|
Zhou Y, Li Z, Chi C, Li C, Yang M, Liu B. Identification of Hub Genes and Potential Molecular Pathogenesis in Substantia Nigra in Parkinson's Disease via Bioinformatics Analysis. PARKINSON'S DISEASE 2023; 2023:6755569. [PMID: 37089789 PMCID: PMC10121343 DOI: 10.1155/2023/6755569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 02/23/2023] [Accepted: 03/25/2023] [Indexed: 04/25/2023]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disease, with significant socioeconomic burdens. One of the crucial pathological features of PD is the loss of dopaminergic neurons in the substantia nigra (SN). However, the exact pathogenesis remains unknown. Moreover, therapies to prevent neurodegenerative progress are still being explored. We performed bioinformatics analysis to identify candidate genes and molecular pathogenesis in the SN of patients with PD. We analyzed the expression profiles, GSE49036 and GSE7621, which included 31 SN tissues in PD samples and 17 SN tissues in healthy control samples, and identified 86 common differentially expressed genes (DEGs). Then, GO and KEGG pathway analyses of the identified DEGs were performed to understand the biological processes and significant pathways of PD. Subsequently, a protein-protein interaction network was established, with 15 hub genes and four key modules which were screened in this network. The expression profiles, GSE8397 and GSE42966, were used to verify these hub genes. We demonstrated a decrease in the expression levels of 14 hub genes in the SN tissues of PD samples. Our results indicated that, among the 14 hub genes, DRD2, SLC18A2, and SLC6A3 may participate in the pathogenesis of PD by influencing the function of the dopaminergic synapse. CACNA1E, KCNJ6, and KCNB1 may affect the function of the dopaminergic synapse by regulating ion transmembrane transport. Moreover, we identified eight microRNAs (miRNAs) that can regulate the hub genes and 339 transcription factors (TFs) targeting these hub genes and miRNAs. Subsequently, we established an mTF-miRNA-gene-gTF regulatory network. Together, the identification of DEGs, hub genes, miRNAs, and TFs could provide better insights into the pathogenesis of PD and contribute to the diagnosis and therapies.
Collapse
Affiliation(s)
- Yunan Zhou
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin 150001, China
| | - Zhihui Li
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin 150001, China
| | - Chunling Chi
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin 150001, China
| | - Chunmei Li
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin 150001, China
| | - Meimei Yang
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin 150001, China
| | - Bin Liu
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin 150001, China
| |
Collapse
|
3
|
Kozlova MA, Kirillov YA, Makartseva LA, Chernov I, Areshidze DA. Morphofunctional State and Circadian Rhythms of the Liver under the Influence of Chronic Alcohol Intoxication and Constant Lighting. Int J Mol Sci 2021; 22:ijms222313007. [PMID: 34884810 PMCID: PMC8657715 DOI: 10.3390/ijms222313007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/25/2021] [Accepted: 11/29/2021] [Indexed: 01/10/2023] Open
Abstract
A study of the influence of chronic alcohol intoxication, constant illumination and their combined effects on the morphofunctional state of the rat liver and the circadian rhythms (CR) of the studied parameters of the organism was carried out. It was found that both alcohol and constant illumination caused significant changes in the structure of the liver, as well as in the circadian rhythmicity of micromorphometric parameters of hepatocytes, ALT, and total and direct bilirubin rhythms; however, the combined effects of ethanol and constant illumination had the most significant effect on the studied parameters of the organism. These two factors caused disturbances in the circadian rhythms of the micromorphometric parameters of hepatocytes, disruption of the circadian rhythms of total protein, albumin, AST, ALT, and direct and total bilirubin, as well as disturbances in the expression and rhythmicity of the studied clock genes against a background of the development of an inflammatory process in the liver.
Collapse
Affiliation(s)
- Maria A. Kozlova
- Laboratory of Cell Pathology, A.P. Avtsyn Research Institute of Human Morphology, 117218 Moscow, Russia; (M.A.K.); (Y.A.K.); (L.A.M.)
| | - Yuri A. Kirillov
- Laboratory of Cell Pathology, A.P. Avtsyn Research Institute of Human Morphology, 117218 Moscow, Russia; (M.A.K.); (Y.A.K.); (L.A.M.)
| | - Lyudmila A. Makartseva
- Laboratory of Cell Pathology, A.P. Avtsyn Research Institute of Human Morphology, 117218 Moscow, Russia; (M.A.K.); (Y.A.K.); (L.A.M.)
| | - Igor Chernov
- Department of Pathological Anatomy, Tyumen State Medical University, 625023 Tyumen, Russia;
| | - David A. Areshidze
- Laboratory of Cell Pathology, A.P. Avtsyn Research Institute of Human Morphology, 117218 Moscow, Russia; (M.A.K.); (Y.A.K.); (L.A.M.)
- Experimental Tumor Chemotherapy Group, Center for Screening and Preclinical Testing, Institute of Problems of Chemical Physics of the Russian Academy of Science, 142432 Chernogolovka, Russia
- Correspondence: ; Tel.: +7-909-643-37-56
| |
Collapse
|
4
|
Khanal P, Patil BM. Consolidation of network and experimental pharmacology to divulge the antidiabetic action of Ficus benghalensis L. bark. 3 Biotech 2021; 11:238. [PMID: 33968581 DOI: 10.1007/s13205-021-02788-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 03/01/2021] [Indexed: 01/09/2023] Open
Abstract
A total of 21 different bioactives were identified from F. benghalensis in which 3 molecules, i.e., apigenin, 3',4',5,7-tetrahydroxy-3-methoxyflavone, and kaempferol were predicted to target the highest number of proteins involved in diabetic pathogenesis in which protein tyrosine phosphatase 1b was primarily targeted. Similarly, a docking study identified ursolic acid to have the highest binding affinity with protein tyrosine phosphatase 1b. The combined synergic network analysis identified PI3K/Akt signaling pathway to be primarily modulated followed by the calcium signaling pathway. Similarly, in oral glucose tolerance test, we observed the efficacy of hydroalcoholic extract of F. benghalensis to lower the total area under the curve of glucose and increase total area under curve of insulin for 2 hours. Likewise, hydroalcoholic extract reversed the altered homeostatic hepatic enzymes after 28 days of treatments. Similarly, the extract also enhanced the antioxidant enzymes level like catalase and superoxide dismutase in liver homogenate. In summary, hydroalcoholic extract of F. benghalensis bark may act as an antidiabetic agent by enhancing the glycolysis, decreasing gluconeogenesis, promoting glucose uptake, enhancing insulin secretion, and maintaining pancreatic β-cell mass via PI3K/Akt signaling pathway and downregulating the function of protein tyrosine phosphatase 1b. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-021-02788-7.
Collapse
|
5
|
Takada S, Matsubara T, Fujii H, Sato-Matsubara M, Daikoku A, Odagiri N, Amano-Teranishi Y, Kawada N, Ikeda K. Stress can attenuate hepatic lipid accumulation via elevation of hepatic β-muricholic acid levels in mice with nonalcoholic steatohepatitis. J Transl Med 2021; 101:193-203. [PMID: 33303970 DOI: 10.1038/s41374-020-00509-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 10/20/2020] [Accepted: 10/20/2020] [Indexed: 02/06/2023] Open
Abstract
Stress can affect our body and is known to lead to some diseases. However, the influence on the development of nonalcohol fatty liver disease (NAFLD) remains unknown. This study demonstrated that chronic restraint stress attenuated hepatic lipid accumulation via elevation of hepatic β-muricholic acid (βMCA) levels in the development of nonalcoholic steatohepatitis (NASH) in mice. Serum cortisol and corticosterone levels, i.e., human and rodent stress markers, were correlated with serum bile acid levels in patients with NAFLD and methionine- and choline-deficient (MCD) diet-induced mice, respectively, suggesting that stress is related to bile acid (BA) homeostasis in NASH. In the mouse model, hepatic βMCA and cholic acid (CA) levels were increased after the stress challenge. Considering that a short stress enhanced hepatic CYP7A1 protein levels in normal mice and corticosterone increased CYP7A1 protein levels in primary mouse hepatocytes, the enhanced Cyp7a1 expression was postulated to be involved in the chronic stress-increased hepatic βMCA level. Interestingly, chronic stress decreased hepatic lipid levels in MCD-induced NASH mice. Furthermore, βMCA suppressed lipid accumulation in mouse primary hepatocytes exposed to palmitic acid/oleic acid, but CA did not. In addition, Cyp7a1 expression seemed to be related to lipid accumulation in hepatocytes. In conclusion, chronic stress can change hepatic lipid accumulation in NASH mice, disrupting BA homeostasis via induction of hepatic Cyp7a1 expression. This study discovered a new βMCA action in the liver, indicating the possibility that βMCA is available for NAFLD therapy.
Collapse
Affiliation(s)
- Sayuri Takada
- Department of Anatomy and Regenerative Biology, Osaka City University Graduate School of Medicine, Osaka, Japan
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Tsutomu Matsubara
- Department of Anatomy and Regenerative Biology, Osaka City University Graduate School of Medicine, Osaka, Japan.
| | - Hideki Fujii
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
- Endowed Department of Liver Cirrhosis Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Misako Sato-Matsubara
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
- Endowed Laboratory of Synthetic Biology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Atsuko Daikoku
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Naoshi Odagiri
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yuga Amano-Teranishi
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Norifumi Kawada
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kazuo Ikeda
- Department of Anatomy and Regenerative Biology, Osaka City University Graduate School of Medicine, Osaka, Japan
| |
Collapse
|
6
|
Ni C, Zheng K, Gao Y, Chen Y, Shi K, Ni C, Jin G, Yu G. ACOT4 accumulation via AKT-mediated phosphorylation promotes pancreatic tumourigenesis. Cancer Lett 2021; 498:19-30. [PMID: 33148467 DOI: 10.1016/j.canlet.2020.09.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 08/24/2020] [Accepted: 09/22/2020] [Indexed: 02/07/2023]
Abstract
The acyl-CoA thioesterase (ACOT) family catalyses the hydrolysis of acyl-CoA thioesters to their corresponding non-esterified fatty acid and coenzyme A (CoA). Increasing evidence suggests that cancer cells generally have altered lipid metabolism in different aspects. However, the roles of the ACOT family in cancer, especially in pancreatic ductal carcinoma (PDAC), are largely unknown. In the present study, we mined data to determine the clinical significance of all eleven ACOT genes among nine major solid tumour types from TCGA database and found that the expression of ACOT4 in PDAC was negatively correlated with patient survival, establishing ACOT4 as a potential biomarker of PDAC. Depletion of ACOT4 attenuated the proliferation and tumour formation of PDAC cells. Using mass spectrometry, HSPA1A was found to associate with ACOT4. Furthermore, we found that phosphorylation of ACOT4 at S392 by AKT decreased the binding of ACOT4 to HSPA1A, resulting in ACOT4 accumulation. The ACOT4 elevation promotes pancreatic tumourigenesis by producing excessive CoA to support tumour cell metabolism. Thus, our study expands the relationship between AKT signalling and lipid metabolism and establishes a functional role of ACOT4 in PDAC.
Collapse
Affiliation(s)
- Chenming Ni
- Department of Pancreatic Surgery, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Kailian Zheng
- Department of Pancreatic Surgery, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Yunshu Gao
- Department of Oncology, PLA General Hospital, Beijing, 100853, China
| | - Ying Chen
- Department of Pathology, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Keqing Shi
- Precision Medical Center Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Zhejiang Province, 325000, China
| | - Canrong Ni
- Department of Pathology, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Gang Jin
- Department of Pancreatic Surgery, Changhai Hospital, Naval Medical University, Shanghai, 200433, China.
| | - Guanzhen Yu
- Precision Medical Center Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Zhejiang Province, 325000, China.
| |
Collapse
|
7
|
Zhang K, Shi Y, Huang C, Huang C, Xu P, Zhou C, Liu P, Hu R, Zhuang Y, Li G, Hu G, Guo X. Activation of AMP-activated protein kinase signaling pathway ameliorates steatosis in laying hen hepatocytes. Poult Sci 2020; 100:100805. [PMID: 33516482 PMCID: PMC7936166 DOI: 10.1016/j.psj.2020.10.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/25/2020] [Accepted: 10/27/2020] [Indexed: 01/12/2023] Open
Abstract
The fatty liver hemorrhage syndrome in laying hens is a disease of lipid metabolism disorders. Importantly, energy sensor AMP-activated protein kinase (AMPK) plays an essential role in homeostasis regulation of liver lipid. The current research aims to investigate the relationship between AMPK signaling pathway and lipid metabolism in laying hen hepatocytes and explore the underlying mechanisms. The steatotic hepatocytes model of laying hen was established and treated with AMPK agonist AICAR and inhibitor compound C. The results showed that the levels of triglyceride, total cholesterol, and low-density lipoprotein cholesterol significantly declined while high-density lipoprotein cholesterol level increased in the AICAR-treated steatosis group compared with the steatosis group. Furthermore, the mRNA levels of liver kinase B1 and AMP-activated protein kinase α1 declined significantly in the steatosis group compared with those in the normal group. However, AMPK activation significantly upregulated the mRNA levels of peroxisome proliferator-activated receptor α and carnitine palmitoyl transferase-1 while downregulated the mRNA levels of acetyl CoA carboxylase, fatty acid synthase, 3-hydroxy-3-methyl glutaryl coenzyme A reductase, Sn-glycerol-3-phosphate acyltransferase, and hepatocyte nuclear factor 4α. These results suggest that activated AMPK signaling pathway increases fatty acid oxidation and reduces lipid synthesis in laying hen hepatocytes, thereby ameliorating liver steatosis.
Collapse
Affiliation(s)
- Kun Zhang
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Yan Shi
- School of Computer and Information Engineering, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Chunli Huang
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Cheng Huang
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Puzhi Xu
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Changming Zhou
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Ping Liu
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Ruiming Hu
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Yu Zhuang
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Guyue Li
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Guoliang Hu
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Xiaoquan Guo
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China.
| |
Collapse
|
8
|
Naseri E, Xiangyu K, Hu C, Ayaz A, Rahmani MM, Nasim M, Hamdard E, Zahir A, Zhou Q, Wang J, Hou X. Bok-choy promotes growth performance, lipid metabolism and related gene expression in Syrian golden hamsters fed with a high-fat diet. Food Funct 2020; 11:2693-2703. [PMID: 32182310 DOI: 10.1039/c9fo02975c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Broadly, bok-choy is known for its potential benefits as part of a human diet. However, the effects and deeper investigations of bok-choy on human health are still insufficient. This study aimed to investigate the beneficial effects of two cultivars of bok-choy, 'Suzhouqing' (green cultivar) and 'Ziluolan' (purple cultivar), on growth performance, lipid metabolism and related gene expressions in Syrian golden hamsters. Fifty six male Syrian golden hamsters (6-months-old) were randomly assigned into 6 groups: normal diet (A), high-fat diet (B), high-fat diet + 5% 'Suzhouqing' (C), high-fat diet + 7% 'Suzhouqing' (D), high-fat diet + 5% 'Ziluolan' (E), and high-fat diet + 7% 'Ziluolan' (F), fed for 56 consecutive days. On day 0, 28 and 56, blood and liver samples were collected to examine the lipid profile, liver enzymes, histomorphology and related gene expressions. The results showed that group B had significantly increased levels of total cholesterol, triglycerides, low-density lipoprotein cholesterol, alanine aminotransferase, aspartate aminotransferase and alkaline phosphatase, while (P < 0.05) showed impaired levels of high-density lipoprotein cholesterol compared with group A. Group D, E and F had significantly reduced levels of total cholesterol, triglycerides, low-density lipoprotein cholesterol, alanine aminotransferase, aspartate aminotransferase and alkaline phosphatase, while the level of high-density lipoprotein cholesterol was significantly increased compared with group B. Remarkably, the mRNA expressions of CEBP-α, DGAT1, lipoprotein lipase (LPL), FASN and 3-hydroxy-3-methylglutaryl-CoA reductase (HMG-CoA) were significantly up-regulated and carnitine palmitoyl transferase 2 (CPT2), Cyp27A1 and proliferator activated receptor alpha (PPAR-α) were significantly down-regulated in group B compared with group A. However, in group D, E and F, the mRNA expression levels of CCAAT enhancer binding protein alpha, DGAT1, LPL, FASN and HMG-CoA were significantly down-regulated and CPT2, Cyp27A1 and PPAR-α were significantly up-regulated compared with group B. In conclusion, different amounts of bok-choy added to the diets incredibly improved the lipid-profile, enhanced liver enzyme activities and related gene expression. The hamsters supplemented with 7% 'Ziluolan' exhibited the best performance among all the other high-fat groups, which shows that Ziluolan could be a great alternative for the reduction of fat accumulation and conserving health.
Collapse
Affiliation(s)
- Emal Naseri
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Science and Technology/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Kong Xiangyu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Science and Technology/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Chunmei Hu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Science and Technology/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China. and New Rural Research Institute in Lianyungang, Nanjing Agricultural University, Lianyungang 222002, China
| | - Aliya Ayaz
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Science and Technology/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Mohammad Malyar Rahmani
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Science and Technology/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Maazullah Nasim
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Science and Technology/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Enayatullah Hamdard
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Science and Technology/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Ahmadullah Zahir
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Science and Technology/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Qian Zhou
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Science and Technology/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Jianjun Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Science and Technology/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China. and New Rural Research Institute in Lianyungang, Nanjing Agricultural University, Lianyungang 222002, China
| | - Xilin Hou
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Science and Technology/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| |
Collapse
|
9
|
Lee SB, Kim HG, Lee JS, Kim WY, Lee MM, Kim YH, Lee JO, Kim HS, Son CG. Intermittent restraint-induced sympathetic activation attenuates hepatic steatosis and inflammation in a high-fat diet-fed mouse model. Am J Physiol Gastrointest Liver Physiol 2019; 317:G811-G823. [PMID: 31604029 DOI: 10.1152/ajpgi.00047.2019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is very prevalent worldwide and is associated with insulin resistance and metabolic syndrome. Stress is a physiological and biological response to maintain homeostasis of the body against stressors while severe stress response is an important contributor to various illnesses, including metabolic syndrome and brain disorders. We have evaluated the effects of intermittent restraint stress on NAFLD in a high-fat diet (HFD)-fed mouse model. C57/BL6 mice had free access to a 60% HFD for 8 wk, with or without intermittent restraint stress (3 h) conducted three times a week. HFD administration increased fat accumulation in liver tissues. Unlike the stressed standard diet group, the levels of hepatic total cholesterol and triglycerides were significantly ameliorated in the HFD with stress group compared with the HFD alone group. These beneficial results were in accordance with serum levels of liver enzymes (aspartate transaminase, alanine transaminase) and hepatic levels of TNF-α and oxidative stress parameters (reactive oxygen species, nitric oxide, and malondialdehyde). The intermittent restraint stress significantly attenuated the HFD-derived alterations in serum insulin levels, hepatic protein kinase B activity, and gene expression, especially related to lipogenesis. This intermittent restraint stress also elevated the serum epinephrine concentration and activated the adrenergic receptor β2 or β3 in livers or white adipose tissue (WAT). Activation of energy expenditure markers (uncoupling protein 1, peroxisome proliferator-activated receptor-γ coactivator-1α) in brown adipose tissue and the browning of WAT were also observed in the HFD with stress group. Taken together, our findings showed the beneficial effects of sympathetic activation by intermittent restraint stress on HFD-induced hepatic steatosis and partial inflammation.NEW & NOTEWORTHY In modern society, stress is a part of daily life, and a certain level of stress is inevitable to most of the general population. Uncontrolled severe stress is obviously harmful; however, certain kind/level of stress could be beneficial on lipid metabolism via sympathetic activation. Our data suggest that a sympathetic activation by intermittent restraint stress could play a positive role in maintaining the balance of hepatic lipid metabolism, especially under high-fat diet conditions.
Collapse
Affiliation(s)
- Sung Bae Lee
- Institute of Traditional Medicine and Bioscience, Daejeon University, Daejeon, Korea
| | - Hyeong Geug Kim
- Institute of Traditional Medicine and Bioscience, Daejeon University, Daejeon, Korea
| | - Jin Seok Lee
- Institute of Traditional Medicine and Bioscience, Daejeon University, Daejeon, Korea
| | - Won Yong Kim
- Institute of Traditional Medicine and Bioscience, Daejeon University, Daejeon, Korea
| | - Myong Min Lee
- Institute of Traditional Medicine and Bioscience, Daejeon University, Daejeon, Korea
| | - Yun Hee Kim
- Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Jung Ok Lee
- Department of Anatomy, Korea University College of Medicine, Seoul, Korea
| | - Hyeon Soo Kim
- Department of Anatomy, Korea University College of Medicine, Seoul, Korea
| | - Chang Gue Son
- Institute of Traditional Medicine and Bioscience, Daejeon University, Daejeon, Korea
| |
Collapse
|
10
|
Konstandi M, Kypreos KE, Matsubara T, Xepapadaki E, Shah YM, Krausz K, Andriopoulou CE, Kofinas A, Gonzalez FJ. Adrenoceptor-related decrease in serum triglycerides is independent of PPARα activation. FEBS J 2019; 286:4328-4341. [PMID: 31230416 DOI: 10.1111/febs.14966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 04/05/2019] [Accepted: 05/19/2019] [Indexed: 12/15/2022]
Abstract
Adrenoceptor (AR)-linked pathways belong to the major components of the stress response system and are associated with the pathophysiology of diseases within the spectrum of metabolic syndrome. In this study, the role of adrenoceptor stimulation in serum triglyceride (TG) regulation in mice was investigated. For this purpose, α1 -ARs were activated with phenylephrine (PH) and β1/2 -ARs with isoprenaline (ISOP). Both AR agonists markedly reduced serum TG levels independently of PPARα activation. These drugs also significantly activated the hormone-sensitive lipase in the white adipose tissue indicating increased mobilization of TGs in this tissue. In addition, PH and ISOP up-regulated Lpl, Nr4A, Dgat1, Mttp, Aadac and Cd36 genes, critical in TG regulation, whereas the observed decrease in serum TG levels was independent of the hepatic very low-density lipoprotein (VLDL)-TG secretion. Interestingly, PH and ISOP also inactivated the hepatic insulin/PI3k/AKT/FoxO1 signaling pathway, holding a critical role in the regulation of genes involved in TG synthesis. Taken together, the findings of the present study indicate that stimulation of α1 - and β1/2 -ARs markedly reduced serum TG steady-state levels as a result of alterations in TG synthesis, uptake, transport, hydrolysis, metabolism and clearance, an effect induced by PPARα independent mechanisms.
Collapse
Affiliation(s)
- Maria Konstandi
- Department of Pharmacology, Faculty of Medicine, University of Ioannina, Greece.,Laboratory of Metabolism, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Kyriakos E Kypreos
- Department of Pharmacology, Faculty of Medicine, University of Patras, Rio, Greece
| | - Tsutomu Matsubara
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.,Department of Anatomy and Regenerative Biology, Graduate School of Medicine, Osaka City University, Japan
| | - Eva Xepapadaki
- Department of Pharmacology, Faculty of Medicine, University of Patras, Rio, Greece
| | - Yatrik M Shah
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.,Department of Molecular and Integrative Physiology, Medical School, University of Michigan, Ann Arbor, MI, USA
| | - Kristopher Krausz
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | | | - Aristeidis Kofinas
- Department of Pharmacology, Faculty of Medicine, University of Ioannina, Greece
| | - Frank J Gonzalez
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| |
Collapse
|
11
|
Wang S, Chen J, Jiang D, Zhang Q, You C, Tocher DR, Monroig Ó, Dong Y, Li Y. Hnf4α is involved in the regulation of vertebrate LC-PUFA biosynthesis: insights into the regulatory role of Hnf4α on expression of liver fatty acyl desaturases in the marine teleost Siganus canaliculatus. FISH PHYSIOLOGY AND BIOCHEMISTRY 2018; 44:805-815. [PMID: 29352428 DOI: 10.1007/s10695-018-0470-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 01/11/2018] [Indexed: 06/07/2023]
Abstract
Long-chain polyunsaturated fatty acid (LC-PUFA) biosynthesis is an important metabolic pathway in vertebrates, especially fish, considering they are the major source of n-3 LC-PUFA in the human diet. However, most fish have only limited capability for biosynthesis of LC-PUFA. The rabbitfish (Siganus canaliculatus) is able to synthesize LC-PUFA as it has all the key enzyme activities required including Δ6Δ5 Fads2, Δ4 Fads2, Elovl5, and Elovl4. We previously reported a direct interaction between the transcription factor Hnf4α and the promoter regions of Δ4 and Δ6Δ5 Fads2, which suggested that Hnf4α was involved in the transcriptional regulation of fads2 in rabbitfish. For functionally investigating it further, a full-length cDNA of 1736-bp-encoding rabbitfish Hnf4α with 454 amino acids was cloned, which was highly expressed in intestine, followed by liver and eyes. Similar to the expression characteristics of its target genes Δ4 and Δ6Δ5 fads2, levels of hnf4α mRNA in liver and eyes were higher in fish reared at low salinity than those reared in high salinity. After the rabbitfish primary hepatocytes were, respectively, incubated with alverine, benfluorex or BI6015, which were anticipated agonists or antagonist for Hnf4α, the mRNA level of Δ6Δ5 and Δ4 fads2 displayed a similar change tendency with that of hnf4α mRNA. Furthermore, when the mRNA level of hhf4α was knocked down using siRNA, the expression of Δ6Δ5 and Δ4 fads2 also decreased. Together, these data suggest that Hnf4α is involved in the transcriptional regulation of LC-PUFA biosynthesis, specifically, by targeting Δ4 and Δ6Δ5 fads2 in rabbitfish.
Collapse
Affiliation(s)
- Shuqi Wang
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, Guangdong, 515063, China
| | - Junliang Chen
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, Guangdong, 515063, China
| | - Danli Jiang
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, Guangdong, 515063, China
| | - Qinghao Zhang
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, Guangdong, 515063, China
| | - Cuihong You
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, Guangdong, 515063, China
| | - Douglas R Tocher
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, FK9 4LA, UK
| | - Óscar Monroig
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, FK9 4LA, UK
| | - Yewei Dong
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, Guangdong, 515063, China
- School of Marine Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Yuanyou Li
- School of Marine Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China.
| |
Collapse
|
12
|
Jusof FF, Bakmiwewa SM, Weiser S, Too LK, Metz R, Prendergast GC, Fraser ST, Hunt NH, Ball HJ. Investigation of the Tissue Distribution and Physiological Roles of Indoleamine 2,3-Dioxygenase-2. Int J Tryptophan Res 2017; 10:1178646917735098. [PMID: 29051706 PMCID: PMC5638149 DOI: 10.1177/1178646917735098] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 08/30/2017] [Indexed: 01/11/2023] Open
Abstract
Indoleamine 2,3-dioxygenase-2 (IDO2) is 1 of the 3 enzymes that can catalyze the first step in the kynurenine pathway of tryptophan metabolism. Of the 2 other enzymes, tryptophan 2,3-dioxygenase is highly expressed in the liver and has a role in tryptophan homeostasis, whereas indoleamine 2,3-dioxygenase-1 (IDO1) expression is induced by inflammatory stimuli. Indoleamine 2,3-dioxygenase-2 is reportedly expressed comparatively narrow, including in liver, kidney, brain, and in certain immune cell types, and it does not appear to contribute significantly to systemic tryptophan catabolism under normal physiological conditions. Here, we report the identification of an alternative splicing pattern, including the use of an alternative first exon, that is conserved in the mouse Ido1 and Ido2 genes. These findings prompted us to assess IDO2 protein expression and enzymatic activity in tissues. Our analysis, undertaken in Ido2 +/+ and Ido2−/− mice using immunohistochemistry and measurement of tryptophan and kynurenine levels, suggested an even more restricted pattern of tissue expression than previously reported. We found IDO2 protein to be expressed in the liver with a perinuclear/nuclear, rather than cytoplasmic, distribution. Consistent with earlier reports, we found Ido2 −/− mice to be phenotypically similar to their Ido2+/+ counterparts regarding levels of tryptophan and kynurenine in the plasma and liver. Our findings suggest a specialized function or regulatory role for IDO2 associated with its particular subcellular localization.
Collapse
Affiliation(s)
- Felicita F Jusof
- Molecular Immunopathology Unit, Bosch Institute and School of Medical Sciences, The University of Sydney, Camperdown, NSW, Australia.,Department of Physiology, Faculty of Medicine, The University of Malaya, Kuala Lumpur, Malaysia
| | - Supun M Bakmiwewa
- Molecular Immunopathology Unit, Bosch Institute and School of Medical Sciences, The University of Sydney, Camperdown, NSW, Australia
| | - Silvia Weiser
- Molecular Immunopathology Unit, Bosch Institute and School of Medical Sciences, The University of Sydney, Camperdown, NSW, Australia
| | - Lay Khoon Too
- Molecular Immunopathology Unit, Bosch Institute and School of Medical Sciences, The University of Sydney, Camperdown, NSW, Australia
| | | | | | - Stuart T Fraser
- Discipline of Physiology, Bosch Institute and School of Medical Sciences, The University of Sydney, Camperdown, NSW, Australia
| | - Nicholas H Hunt
- Molecular Immunopathology Unit, Bosch Institute and School of Medical Sciences, The University of Sydney, Camperdown, NSW, Australia
| | - Helen J Ball
- Molecular Immunopathology Unit, Bosch Institute and School of Medical Sciences, The University of Sydney, Camperdown, NSW, Australia
| |
Collapse
|
13
|
Luo L, Xi C, Xu T, Zhang G, Qun E, Zhang W. Muscarinic receptor mediated signaling pathways in hepatocytes from CCL4 - induced liver fibrotic rat. Eur J Pharmacol 2017; 807:109-116. [DOI: 10.1016/j.ejphar.2017.03.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 03/17/2017] [Accepted: 03/21/2017] [Indexed: 12/21/2022]
|
14
|
Luo F, Guo Y, Ruan GY, Peng R, Li XP. Estrogen lowers triglyceride via regulating hepatic APOA5 expression. Lipids Health Dis 2017; 16:72. [PMID: 28376804 PMCID: PMC5381129 DOI: 10.1186/s12944-017-0463-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 03/28/2017] [Indexed: 12/21/2022] Open
Abstract
Estrogen had been found to be negatively associated with serum triglyceride (TG) levels. Apolipoprotein A5 (APOA5), a novel member of apolipoprotein family, was reported to have a strong ability to decrease serum concentrations of TG. Clinical data found concentrations of APOA5 were higher in woman than that in men, and the negative relationship between APOA5 and TG levels was more significant in woman. These suggests APOA5 may involve in estrogen actions. Therefore, we hypothesize estrogen up-regulates serum concentrations of APOA5 and subsequently decreases serum TG levels. We will design the following experiments to test this hypothesis. (1) We will treat wild and APOA5-defeted ovariectomized hamster with or without estrogen to examine if estrogen could up-regulate concentrations of APOA5 and decrease TG levels. (2) We will treat HepG2 cells with estrogen and investigate the possible mechanisms.
Collapse
Affiliation(s)
- Fei Luo
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, Hunan, 410011, People's Republic of China
| | - Yuan Guo
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, Hunan, 410011, People's Republic of China
| | - Gui-Yun Ruan
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, Hunan, 410011, People's Republic of China
| | - Ran Peng
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, Hunan, 410011, People's Republic of China
| | - Xiang-Ping Li
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, Hunan, 410011, People's Republic of China.
| |
Collapse
|
15
|
Liu S, Kawamoto T, Morita O, Yoshinari K, Honda H. Discriminating between adaptive and carcinogenic liver hypertrophy in rat studies using logistic ridge regression analysis of toxicogenomic data: The mode of action and predictive models. Toxicol Appl Pharmacol 2017; 318:79-87. [PMID: 28108177 DOI: 10.1016/j.taap.2017.01.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 01/11/2017] [Accepted: 01/13/2017] [Indexed: 10/20/2022]
|
16
|
Nido SA, Shituleni SA, Mengistu BM, Liu Y, Khan AZ, Gan F, Kumbhar S, Huang K. Effects of Selenium-Enriched Probiotics on Lipid Metabolism, Antioxidative Status, Histopathological Lesions, and Related Gene Expression in Mice Fed a High-Fat Diet. Biol Trace Elem Res 2016; 171:399-409. [PMID: 26546553 DOI: 10.1007/s12011-015-0552-8] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 10/21/2015] [Indexed: 12/16/2022]
Abstract
A total of 80 female albino mice were randomly allotted into five groups (n = 16) as follows: (A) normal control, (B) high-fat diet (HFD),; (C) HFD + probiotics (P), (D) HFD + sodium selenite (SS), and (E) HFD + selenium-enriched probiotics (SP). The selenium content of diets in groups A, B, C, D, and E was 0.05, 0.05, 0.05, 0.3, and 0.3 μg/g, respectively. The amount of probiotics contained in groups C and E was similar (Lactobacillus acidophilus 0.25 × 10(11)/mL and Saccharomyces cerevisiae 0.25 × 10(9)/mL colony-forming units (CFU)). The high-fat diet was composed of 15 % lard, 1 % cholesterol, 0.3 % cholic acid, and 83.7 % basal diet. At the end of the 4-week experiment, blood and liver samples were collected for the measurements of lipid metabolism, antioxidative status, histopathological lesions, and related gene expressions. The result shows that HFD significantly increased the body weights and liver damages compared to control, while P, SS, or SP supplementation attenuated the body weights and liver damages in mice. P, SS, or SP supplementation also significantly reversed the changes of alanine aminotransferase (AST), aspartate aminotransferase (ALT), total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL), total protein (TP), high-density lipoprotein (HDL), glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), catalasa (CAT), and malondialdehyde (MDA) levels induced by HFD. Generally, adding P, SS, or SP up-regulated mRNA expression of carnitine palmitoyltransferase-I (CPT1), carnitine palmitoyltransferase II (CPT2), acetyl-CoA acetyltransferase II (ACAT2), acyl-coenzyme A oxidase (ACOX2), and peroxisome proliferator-activated receptor alpha (PPARα) and down-regulated mRNA expression of fatty acid synthase (FAS), lipoprotein lipase (LPL), peroxisome proliferator-activated receptor gamma (PPARγ), and sterol regulatory element-binding protein-1 (SREBP1) involved in lipid metabolism. Among the group, adding SP has a maximum effect in improving lipid metabolism, antioxidative status, histopathological lesions, and related gene expression in mice fed a HFD.
Collapse
Affiliation(s)
- Sonia Agostinho Nido
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowl, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
- Departamento de Ciências Naturais e Matemática, Universidade Pedagógica de Moçambique, Campus Universitarios de Chiuaula, P. O. Box 4, Delegação de Niassa, Lichinga, Moçambique
| | - Shituleni Andreas Shituleni
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowl, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Berhe Mekonnen Mengistu
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowl, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Yunhuan Liu
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowl, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Alam Zeb Khan
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowl, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Fang Gan
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowl, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Shahnawaz Kumbhar
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowl, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Kehe Huang
- Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowl, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China.
| |
Collapse
|
17
|
Zhang F, Xie D, Liang M, Xiong M. Functional Regression Models for Epistasis Analysis of Multiple Quantitative Traits. PLoS Genet 2016; 12:e1005965. [PMID: 27104857 PMCID: PMC4841563 DOI: 10.1371/journal.pgen.1005965] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 03/08/2016] [Indexed: 12/02/2022] Open
Abstract
To date, most genetic analyses of phenotypes have focused on analyzing single traits or analyzing each phenotype independently. However, joint epistasis analysis of multiple complementary traits will increase statistical power and improve our understanding of the complicated genetic structure of the complex diseases. Despite their importance in uncovering the genetic structure of complex traits, the statistical methods for identifying epistasis in multiple phenotypes remains fundamentally unexplored. To fill this gap, we formulate a test for interaction between two genes in multiple quantitative trait analysis as a multiple functional regression (MFRG) in which the genotype functions (genetic variant profiles) are defined as a function of the genomic position of the genetic variants. We use large-scale simulations to calculate Type I error rates for testing interaction between two genes with multiple phenotypes and to compare the power with multivariate pairwise interaction analysis and single trait interaction analysis by a single variate functional regression model. To further evaluate performance, the MFRG for epistasis analysis is applied to five phenotypes of exome sequence data from the NHLBI’s Exome Sequencing Project (ESP) to detect pleiotropic epistasis. A total of 267 pairs of genes that formed a genetic interaction network showed significant evidence of epistasis influencing five traits. The results demonstrate that the joint interaction analysis of multiple phenotypes has a much higher power to detect interaction than the interaction analysis of a single trait and may open a new direction to fully uncovering the genetic structure of multiple phenotypes. The widely used statistical methods test interaction for single phenotype. However, we often observe pleotropic genetic interaction effects. The simultaneous gene-gene (GxG) interaction analysis of multiple complementary traits will increase statistical power to detect GxG interactions. Although GxG interactions play an important role in uncovering the genetic structure of complex traits, the statistical methods for detecting GxG interactions in multiple phenotypes remains less developed owing to its potential complexity. Therefore, we extend functional regression model from single variate to multivariate for simultaneous GxG interaction analysis of multiple correlated phenotypes. Large-scale simulations are conducted to evaluate Type I error rates for testing interaction between two genes with multiple phenotypes and to compare power with traditional multivariate pair-wise interaction analysis and single trait interaction analysis by a single variate functional regression model. To further evaluate performance, the MFRG for interaction analysis is applied to five phenotypes of exome sequence data from the NHLBI’s Exome Sequencing Project (ESP) to detect pleiotropic GxG interactions. 267 pairs of genes that formed a genetic interaction network showed significant evidence of interactions influencing five traits.
Collapse
Affiliation(s)
- Futao Zhang
- Department of Computer Science, College of Internet of Things, Hohai University, Changzhou, China
| | - Dan Xie
- College of Information Engineering, Hubei University of Chinese Medicine, Hubei, China
| | - Meimei Liang
- Institute of Bioinformatics, Zhejiang University, Hangzhou, Zhejiang, China
| | - Momiao Xiong
- Human Genetics Center, Division of Biostatistics, The University of Texas School of Public Health, Houston, Texas, United States of America
- * E-mail:
| |
Collapse
|
18
|
Qi Z, Ding S. Obesity-associated sympathetic overactivity in children and adolescents: the role of catecholamine resistance in lipid metabolism. J Pediatr Endocrinol Metab 2016; 29:113-25. [PMID: 26488603 DOI: 10.1515/jpem-2015-0182] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Accepted: 08/27/2015] [Indexed: 11/15/2022]
Abstract
BACKGROUND Obesity in children and adolescents is characterized by chronic sympathetic overdrive and reduced epinephrine-stimulated lipolysis. This resistance to catecholamines occurs during the dynamic phase of fat accumulation. This review will focus on the relationship between sympathetic-adrenal activity and lipid metabolism, thereby highlighting the role of catecholamine resistance in the development of childhood obesity. RESULTS AND CONCLUSIONS Catecholamine resistance causes lipid accumulation in adipose tissue by reducing lipolysis, increasing lipogenesis and impeding free fatty acid (FFA) transportation. Exercise improves catecholamine resistance, as evidenced by attenuated systemic sympathetic activity, reduced circulating catecholamine levels and enhanced β-adrenergic receptor signaling. Insulin resistance is mostly a casual result rather than a cause of childhood obesity. Therefore, catecholamine resistance in childhood obesity may promote insulin signaling in adipose tissue, thereby increasing lipogenesis. This review outlines a series of evidence for the role of catecholamine resistance as an upstream mechanism leading to childhood obesity.
Collapse
|
19
|
Biological basis of “depression with liver-qi stagnation and spleen deficiency syndrome”: A digital gene expression profiling study. JOURNAL OF TRADITIONAL CHINESE MEDICAL SCIENCES 2015. [DOI: 10.1016/j.jtcms.2016.02.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|
20
|
Silvennoinen R, Quesada H, Kareinen I, Julve J, Kaipiainen L, Gylling H, Blanco-Vaca F, Escola-Gil JC, Kovanen PT, Lee-Rueckert M. Chronic intermittent psychological stress promotes macrophage reverse cholesterol transport by impairing bile acid absorption in mice. Physiol Rep 2015; 3:3/5/e12402. [PMID: 25969465 PMCID: PMC4463831 DOI: 10.14814/phy2.12402] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Psychological stress is a risk factor for atherosclerosis, yet the pathophysiological mechanisms involved remain elusive. The transfer of cholesterol from macrophage foam cells to liver and feces (the macrophage-specific reverse cholesterol transport, m-RCT) is an important antiatherogenic pathway. Because exposure of mice to physical restraint, a model of psychological stress, increases serum levels of corticosterone, and as bile acid homeostasis is disrupted in glucocorticoid-treated animals, we investigated if chronic intermittent restraint stress would modify m-RCT by altering the enterohepatic circulation of bile acids. C57Bl/6J mice exposed to intermittent stress for 5 days exhibited increased transit through the large intestine and enhanced fecal bile acid excretion. Of the transcription factors and transporters that regulate bile acid homeostasis, the mRNA expression levels of the hepatic farnesoid X receptor (FXR), the bile salt export pump (BSEP), and the intestinal fibroblast growth factor 15 (FGF15) were reduced, whereas those of the ileal apical sodium-dependent bile acid transporter (ASBT), responsible for active bile acid absorption, remained unchanged. Neither did the hepatic expression of cholesterol 7α-hydroxylase (CYP7A1), the key enzyme regulating bile acid synthesis, change in the stressed mice. Evaluation of the functionality of the m-RCT pathway revealed increased fecal excretion of bile acids that had been synthesized from macrophage-derived cholesterol. Overall, our study reveals that chronic intermittent stress in mice accelerates m-RCT specifically by increasing fecal excretion of bile acids. This novel mechanism of m-RCT induction could have antiatherogenic potential under conditions of chronic stress.
Collapse
Affiliation(s)
| | - Helena Quesada
- IIB Sant Pau, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona-CIBER de Diabetes y Enfermedades Metabolicas Asociadas, Barcelona, Spain
| | | | - Josep Julve
- IIB Sant Pau, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona-CIBER de Diabetes y Enfermedades Metabolicas Asociadas, Barcelona, Spain
| | - Leena Kaipiainen
- Internal Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Helena Gylling
- Internal Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Francisco Blanco-Vaca
- IIB Sant Pau, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona-CIBER de Diabetes y Enfermedades Metabolicas Asociadas, Barcelona, Spain
| | - Joan Carles Escola-Gil
- IIB Sant Pau, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona-CIBER de Diabetes y Enfermedades Metabolicas Asociadas, Barcelona, Spain
| | | | | |
Collapse
|
21
|
Santiago JA, Potashkin JA. Network-based metaanalysis identifies HNF4A and PTBP1 as longitudinally dynamic biomarkers for Parkinson's disease. Proc Natl Acad Sci U S A 2015; 112:2257-62. [PMID: 25646437 PMCID: PMC4343174 DOI: 10.1073/pnas.1423573112] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Environmental and genetic factors are likely to be involved in the pathogenesis of Parkinson's disease (PD), the second most prevalent neurodegenerative disease among the elderly. Network-based metaanalysis of four independent microarray studies identified the hepatocyte nuclear factor 4 alpha (HNF4A), a transcription factor associated with gluconeogenesis and diabetes, as a central regulatory hub gene up-regulated in blood of PD patients. In parallel, the polypyrimidine tract binding protein 1 (PTBP1), involved in the stabilization and mRNA translation of insulin, was identified as the most down-regulated gene. Quantitative PCR assays revealed that HNF4A and PTBP1 mRNAs were up- and down-regulated, respectively, in blood of 51 PD patients and 45 controls nested in the Diagnostic and Prognostic Biomarkers for Parkinson's Disease. These results were confirmed in blood of 50 PD patients compared with 46 healthy controls nested in the Harvard Biomarker Study. Relative abundance of HNF4A mRNA correlated with the Hoehn and Yahr stage at baseline, suggesting its clinical utility to monitor disease severity. Using both markers, PD patients were classified with 90% sensitivity and 80% specificity. Longitudinal performance analysis demonstrated that relative abundance of HNF4A and PTBP1 mRNAs significantly decreased and increased, respectively, in PD patients during the 3-y follow-up period. The inverse regulation of HNF4A and PTBP1 provides a molecular rationale for the altered insulin signaling observed in PD patients. The longitudinally dynamic biomarkers identified in this study may be useful for monitoring disease-modifying therapies for PD.
Collapse
Affiliation(s)
- Jose A Santiago
- Cellular and Molecular Pharmacology Department, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064
| | - Judith A Potashkin
- Cellular and Molecular Pharmacology Department, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064
| |
Collapse
|