1.Components and lipid-lowering effect of total saponins from underground part of Gynostemma pentaphyllum.
Fei TENG ; Xiang-Wei LI ; Min LI ; Dong-Dong FAN ; Jing-Jing ZHU ; Hui-Min GAO ; Zhi-Min WANG
China Journal of Chinese Materia Medica 2022;47(18):5022-5031
The saponins in different parts of Gynostemma pentaphyllum were analyzed via UPLC-Q-TOF-MS~E. A total of 46 saponins were identified, and the underground part had 26 saponins more than the aboveground part, most of which were trisaccharide saponins. The rat model of hyperlipidemia was established with high-fat diet. This study explored the lipid-lowering activity of total saponins in the underground part of G. pentaphyllum, so as to provide a theoretical basis for the comprehensive utilization of the underground part of G. pentaphyllum. A total of 99 healthy SD rats were randomly assigned into a blank group, a model group, a positive drug group, an aboveground total saponins group, and low-, medium-, and high-dose underground total saponins groups. Except the blank group, the other groups were fed with high-fat diet for 6 weeks. Then, the blood was collected from the orbital cavity to determine whether the modeling was successful according to the serum levels of total cholesterol(TC) and triglyceride(TG). After intragastric administration of the corresponding agents for 30 continuous days, the physical state of the rats were observed, and the body weight and liver specific gravity were measured. Furthermore, the levels of TC, TG, low-density lipoprotein cholesterol(LDL-C), high-density lipoprotein cholesterol(HDL-C), alanine transaminase(ALT), aspartate transaminase(AST), bilirubin, and total bile acids in serum, as well as the levels of superoxide dismutase(SOD), malondialdehyde(MDA), peroxidase proliferator-activated receptor(PPAR-γ) in the liver tissue, were determined. The pathological changes of liver was observed via HE staining. The results showed that the aboveground total saponins and medium-and high-dose underground total saponins can treat hepatocyte steatosis, lower TC, TG, LDL-C, ALT, AST, total bilirubin, MDA, and PPAR-γ levels, and increase HDL-C and SOD levels in the model rats. The effect tended to be more obvious with the increase in dosage. Therefore, the total saponins in the underground part of G. pentaphyllum have good pharmacological effect of reducing blood lipid, which provides a theoretical basis for the comprehensive utilization of the underground part of G. pentaphyllum.
Alanine Transaminase/analysis*
;
Animals
;
Aspartate Aminotransferases/analysis*
;
Bile Acids and Salts/blood*
;
Bilirubin/blood*
;
Cholesterol, LDL/blood*
;
Diet, High-Fat/adverse effects*
;
Gynostemma/chemistry*
;
Hypolipidemic Agents/therapeutic use*
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Lipoproteins, HDL/blood*
;
Liver/metabolism*
;
Malondialdehyde/analysis*
;
Peroxisome Proliferator-Activated Receptors/analysis*
;
Rats
;
Rats, Sprague-Dawley
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Saponins/therapeutic use*
;
Superoxide Dismutase
;
Triglycerides/blood*
;
Trisaccharides/therapeutic use*
2.Correlation of serum androgen levels with lipid metabolism in middle-aged and elderly men in Zunyi, Guizhou.
Xu-Bo SHEN ; Shi-Min XIONG ; Fang-Wei LIU ; Yong-Jun SHI ; Qin YU ; Quan LI ; Lian-Bo SHEN ; Yuan-Zhong ZHOU
National Journal of Andrology 2018;24(4):311-316
ObjectiveTo investigate the relationship of the levels of serum androgens with lipid metabolism in middle-aged and elderly men in Zunyi, Guizhou.
METHODSUsing the stratified cluster sampling method, we conducted a questionnaire investigation and physical examinations among 437 men in Zunyi City. We divided the subjects into a middle-aged (40-64 [53.20 ± 7.41] years, n = 269) and an elderly group (=≥65 [70.63 ± 4.66] years, n = 168) and collected fasting elbow venous blood samples from them for measuring the levels of total testosterone (TT), sex hormone-binding globulin (SHBG), luteinizing hormone (LH), total cholesterol (TCH), triglyceride (TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL), calculated free testosterone (cFT), free testosterone index (FTI), and testosterone secretion index (TSI).
RESULTSCompared with the elderly group, the middle-aged males showed significantly lower SHBG, LH, HDL and LDL, and higher cFT, FTI, TSI, TG and TCH (all P < 0.05). TT and SHBG were negatively correlated with TG, TCH, HDL and LDL, while cFT was positively correlated with TCH, and so was FTI with TG, TCH with LDL, and TSI with TCH, HDL and LDL (all P < 0.05), but LH was negatively correlated with TG, TCH and LDL (all P < 0.05). Multivariate linear regression analysis showed that TT and SHBG were negatively correlated with TG, TCH, HDL and LDL, and so was LH with TCH, HDL and LDL (all P < 0.05).
CONCLUSIONSIn the middle-aged and elderly men in Zunyi, low concentrations of TT, SHBG and LH were associated with the increased risk of high-TCH and -LDL dyslipidemia, low concentrations of TT and SHBG with that of high-TG dyslipidemia, while high concentrations of TT, SHBG and LH with that of low-HDL dyslipidemia.
Adult ; Aged ; Androgens ; blood ; China ; Cholesterol ; blood ; Dyslipidemias ; etiology ; Humans ; Lipid Metabolism ; Lipoproteins, HDL ; blood ; Lipoproteins, LDL ; blood ; Luteinizing Hormone ; Male ; Middle Aged ; Multivariate Analysis ; Sex Hormone-Binding Globulin ; Testosterone ; blood ; Triglycerides ; blood
3.Effects of Rapamycin on Clinical Manifestations and Blood Lipid Parameters in Different Preeclampsia-like Mouse Models.
Yan-Hong YI ; Zi YANG ; Yi-Wei HAN ; Jing HUAI
Chinese Medical Journal 2017;130(9):1033-1041
BACKGROUNDThe pathogenesis of some types of preeclampsia is related to fatty acid oxidation disorders. Rapamycin can regulate fatty acid metabolism. This study aimed to investigate the effects of rapamycin on the clinical manifestations and blood lipid parameters in different preeclampsia-like mouse models.
METHODSTwo preeclampsia-like mouse models and a control group were established: L-NA (injected with Nω-nitro-L-arginine methyl ester), LPS (injected with lipopolysaccharide), and the control group with normal saline (NS). The mouse models were established at preimplantation (PI), early- and late-pregnancy (EP, LP) according to the time of pregnancy. The administration of rapamycin (RA; L-NA+RA, LPS+RA, and NS+RA) or vehicle as controls (C; L-NA+C, LPS+C, NS+C) were followed on the 2nd day after the mouse models' establishment. Each subgroup consisted of eight pregnant mice. The mean arterial pressure (MAP), 24-h urinary protein, blood lipid, fetus, and placental weight were measured. The histopathological changes and lipid deposition of the liver and placenta were observed. Student's t-test was used for comparing two groups. Repeated measures analysis of variance was used for blood pressure analysis. Qualitative data were compared by Chi-square test.
RESULTSThe MAP and 24-h urinary protein in the PI, EP, and LP subgroups of the L-NA+C and LPS+C groups were significantly higher compared with the respective variables in the NS+C group (P < 0.05). The preeclampsia-like mouse models were established successfully. There was no significant difference in the MAP between the PI, EP, and LP subgroups of the L-NA+RA and L-NA+C groups and the LPS+RA and LPS+C groups. The 24-h urine protein levels in the PI and EP subgroups of the L-NA+RA group were significantly lower compared with the respective levels in the L-NA+C groups (1037 ± 63 vs. 2127 ± 593 μg; 976 ± 42 vs. 1238 ± 72 μg; bothP < 0.05), also this effect appeared similar in the PI and EP subgroups of the LPS+RA and LPS+C groups (1022 ± 246 vs. 2141 ± 432 μg; 951 ± 41 vs. 1308 ± 30 μg; bothP < 0.05). The levels of serum-free fatty acid (FFA) in the PI and EP subgroups of the L-NA+RA groups were significantly lower compared with the respective levels in the L-NA+C group (2.49 ± 0.44 vs. 3.30 ± 0.18 mEq/L; 2.23 ± 0.29 vs. 2.84 ± 0.14 mEq/L; bothP < 0.05). The levels of triglycerides (TG) and total cholesterol in the PI subgroup of the L-NA+RA group were significantly lower compared with the respective levels in the L-NA+C (1.51 ± 0.16 vs. 2.41 ± 0.37 mmol/L; 2.11 ± 0.17 vs. 2.47 ± 0.26 mmol/L; bothP < 0.05), whereas high-density lipoprotein serum concentration was significantly higher (1.22 ± 0.19 vs. 0.87 ± 0.15 mmol/L;P < 0.05) and low-density lipoprotein serum concentration did not exhibit a significant difference. There were no significant differences in the FFA of the PI, EP, and LP subgroups between the LPS+RA and the LPS+C groups. The levels of TG in the PI subgroup of the LPS+RA group were significantly lower compared with the respective levels in the LPS+C group (0.97 ± 0.05 vs. 1.22 ± 0.08 mmol/L;P < 0.05).
CONCLUSIONRapamycin can improve clinical manifestations and blood lipid profile in part of the preeclampsia-like mouse models.
Animals ; Blood Pressure ; drug effects ; Chi-Square Distribution ; Cholesterol ; blood ; Disease Models, Animal ; Female ; Lipid Metabolism ; drug effects ; Lipids ; blood ; Lipoproteins, HDL ; blood ; Lipoproteins, LDL ; blood ; Mice ; Mice, Inbred C57BL ; Placenta ; drug effects ; metabolism ; Pre-Eclampsia ; blood ; drug therapy ; Pregnancy ; Pregnancy Outcome ; Sirolimus ; therapeutic use ; Triglycerides ; administration & dosage ; blood
4.Plasma level of chemerin in COPD patients and the relationship between chemerin and lipid metabolism.
Chunzhi LI ; Li YAN ; Jinxiao SONG
Journal of Central South University(Medical Sciences) 2016;41(7):676-683
OBJECTIVE:
To explore the change of plasma level of chemerin in chronic obstructive pulmonary disease (COPD) patients and its relationship with lipid metabolism.
METHODS:
A total of 150 COPD patients were randomly selected and set as the COPD group and 30 healthy persons were set as the control group. The COPD group was further divided into a thin group (BMI<18.5 kg/m2, n=116) and a normal weight group (BMI≥18.5 kg/m2, n=34) according to their body mass index (BMI). Enzyme-linked immunosorbent (ELISA) was used in detection of plasma chemerin, total cholesterol (TC), triglyceride (TG), low density lipoprotein (LDL), and high-density lipoprotein (HDL). The hospitalization rate in a half year and the mortality was statistically analyzed. Pearson correlation analysis was applied to analyze the relationship between plasma level of chemerin and levels of blood lipids, and Spearman rank correlation method was used to analyze the relationship between the plasma levels of chemerin or lipids and the prognosis.
RESULTS:
Compared with the control group, plasma levels of TC, TG and HDL in the COPD group in acute exacerbation and remission stage were reduced, while plasma levels of chemerin and LDL was elevated; compared with the thin group, plasma levels of TC, TG and HDL in the normal weight group were elevated, while plasma levels of chemerin and LDL were decreased. The hospitalization rate in half year and the mortality in the thin group were higher than that in the normal weight group, and the plasma levels of TC, TG and HDL in the COPD patients with hospitalization in half year or death were lower than that in COPD patients without hospitalization, while the plasma levels of chemerin and LDL was increased (P<0.05). Pearson correlation analysis showed that plasma level of chemerin in COPD patients was negatively correlated with plasma levels of TC, TG and HDL (r=-0.695, -0.748, -0.695, P<0.05), while positively correlated with plasma levels of LDL (r=0.668, P<0.05). Spearman rank correlation analysis showed that plasma levels of TC, TG and HDL in COPD patients and hospitalization rate in half year as well as the mortality were negatively correlated (TC: r=-0.716, -0.737; TG: r=-0.748, -0.753; HDL: r=
-0.736, -0.728, P<0.05), while the plasma level of chemerin or LDL and hospitalization rate in half year and the mortality were positively correlated (chemerin: r=0.753, 0.766; LDL: r=0.742, 0.755, P<0.05).
CONCLUSION
Plasma levels of chemerin in the COPD patients are correlated with lipid metabolism. Plasma levels of chemerin and lipid are related to prognosis of COPD. The plasma levels of chemerin in patients with COPD may reflect the lipid metabolism and could be served as the index for prognostic evaluation.
Body Mass Index
;
Chemokines
;
Cholesterol
;
Humans
;
Intercellular Signaling Peptides and Proteins
;
Lipid Metabolism
;
Lipoproteins, HDL
;
Lipoproteins, LDL
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Pulmonary Disease, Chronic Obstructive
;
Triglycerides
5.Effect and mechanism of recombinant hirudin on atherosclerotic plaques in apolipoprotein E knockout (ApoE(-/-)) mice.
Jin-fan TIAN ; Chang-Jiang GE ; Shu-zheng LU ; Fei YUAN ; Kang ZHAO
Chinese Journal of Integrated Traditional and Western Medicine 2015;35(2):198-203
OBJECTIVETo explore the effect and mechanism of hirudin on atherosclerotic plaques in apolipoprotein E knockout (ApoE(-/-)) mice.
METHODSTotally 24 ApoE(-/-) mice, 7-8 weeks old were fed with high fat diets. They were randomly divided into the recombinant hirudin treatment group (drug group) and the model group according to body weight and different dens, 12 in each group. Twelve C57BL/6J mice, 7-8 weeks old fed with high fat diet were recruited as the normal control group. Recombinant hirudin (0.25 mg/kg) was intraperitoneally injected to mice in the drug group from the 10th week old once every other day for five successive weeks. Equal volume of normal saline was injected to mice in the model group. Mice in the normal control group received no treatment. All mice were sacrificed after fed with high fat diet until they were 20 weeks old. Serum levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL), high-density lipoprotein (HDL), high-sensitive C-reactive protein (hs-CRP), E-selectin, interleukin-6 (IL-6), and stromal metalloproteinase-2 (MMP-2) were detected. The plaque/lumen area and extracellular lipid composition/ plaque area were analyzed by HE staining and morphometry. Changes of signaling molecules in store-operated calcium channels, including stromal interacting molecule 1 (STIM1), Orail protein, and transient receptor potential channel 1 (TRPC1) were determined by Western blot. Results Lipid plaque formed in the aorta vessel wall of 20-week old mice in the model group. Compared with the normal control group, serum levels of TC, TG and LDL increased (P<0.01), hs-CRP, E-selction, IL-6, and MMP-2 obviously increased (P<0.01, P<0.05) in the model group; expression levels of STIM1, TRPC1, and Orail significantly increased (P<0.01). Compared with the model group, the plaque/lumen area and the extracellular lipid composition/plaque area significantly decreased in the drug group (P<0.05, P<0.01); serum levels of TC and LDL, hs-CRP, E-selction, IL-6, and MMP-2 obviously decreased (P<0.05, P<0.01); expression levels of STIM1, TRPC1, and Orail were significantly down-regulated (P<0.05, P<0.01).
CONCLUSIONHirudin could significantly improve lipids and endothelial functions of ApoE(-/-) mice, down-regulate expression levels of STIM1, Orai1, and TRPC1, and thus delaying the occurrence and development of atherosclerosis.
Animals ; Aorta ; Apolipoproteins E ; metabolism ; Atherosclerosis ; C-Reactive Protein ; Cholesterol ; Diet, High-Fat ; Drugs, Chinese Herbal ; E-Selectin ; Hirudins ; metabolism ; Interleukin-6 ; Lipids ; Lipoproteins, HDL ; Lipoproteins, LDL ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Plaque, Atherosclerotic ; metabolism ; Recombinant Proteins ; metabolism ; Triglycerides
6.Effects of Rhubarbs from different regions on blood lipid and antioxidation of hyperlipidemia rats.
Zhi-wang WANG ; Mei GUO ; Dan MA ; Rui-qiong WANG
Chinese Journal of Applied Physiology 2015;31(3):278-281
OBJECTIVETo comparatively study the effects of Rhubarbs from different regions on blood lipid and antioxi dation of hyperlipidemia rats.
METHODSMale rats were randomly divided into 9 groups ( n = 8) and fed with high-fat diet to replicate the hyperlipidemia model. Meanwhile, Rheum tanguticum was administrated intragastrically at two doses (3.0 g/kg and 1.0 g/kg), once a day for continuous 28 days. The effects of Rheum tanguticum planted in Gannan (RT-GN), Rheum tanguticum planted in Xinin (RT-XN) and Rheum plmatum planted in Lixian (RP-LX) were evaluated through detecting the parameters of blood lipids, blood viscosity and antioxidant system.
RESULTST-GN, RT-XN and RP-LX in the range of 1.0-3.0 g/kg could decrease the blood levels of total cholesterol (TC), triglyceride (TG), low density lipoprotein (LDL) and malonaldehyde (MDA) in blood. Besides, they could reduce blood viscosity, increase high density lipoprotein (HDL) level and upregulate the activity of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px). Interestingly, their effects on blood viscosity was obviously in a dose dependent manner. In addition, the effects of RT-GN on LDL, MDA and blood viscosity were not significantly different from those of RT-XN and better than those of RP-LX.
CONCLUSIONThe RT has better hypolipidemic effects than the RP, but RT-GN and RT-XN are not different from the above effects.
Animals ; Antioxidants ; metabolism ; Blood Viscosity ; Cholesterol ; blood ; Diet, High-Fat ; Disease Models, Animal ; Drugs, Chinese Herbal ; administration & dosage ; pharmacology ; Glutathione Peroxidase ; metabolism ; Hyperlipidemias ; drug therapy ; Lipids ; blood ; Lipoproteins, HDL ; blood ; Lipoproteins, LDL ; blood ; Male ; Malondialdehyde ; blood ; Rats ; Rheum ; chemistry ; Superoxide Dismutase ; metabolism ; Triglycerides ; blood
7.Metabolic effects of androgen deprivation therapy.
Korean Journal of Urology 2015;56(1):12-18
The therapeutic effects and side effects of androgen deprivation therapy (ADT), which is a main treatment method for metastatic prostate cancer, are well known, but the metabolic effects have only recently been studied. This review describes the effects of ADT on body habitus, insulin resistance, lipid profiles, diabetes, metabolic syndrome, and cardiovascular morbidity and mortality. The review was done by using KoreaMed and PubMed to search the medical literature related to prostate cancer, ADT, body habitus, lipid profile, diabetes, insulin resistance, metabolic syndrome, and cardiovascular disease. ADT increases fat mass and decreases lean body mass. Fat mostly accumulates in the subcutaneous area. ADT increases total cholesterol, triglycerides, and high-density lipoprotein, as well as the risk for insulin resistance and diabetes. ADT also increases the risk for cardiovascular events, but insufficient evidence is available for a correlation with mortality. ADT changes body habitus and lipid profiles and has different characteristics than those of classic metabolic syndrome, but it is related to insulin resistance and diabetes. ADT increases the risk for cardiovascular events. No consistent guidelines have been proposed for treating the metabolic effects of ADT, but the generally recommended treatment methods for lowering the risk of diabetes and cardiovascular disease should be fully understood. Additional studies are necessary.
Androgen Antagonists/*adverse effects/therapeutic use
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Body Composition/drug effects
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Cardiovascular Diseases/metabolism/mortality
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Cholesterol/chemistry
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Diabetes Mellitus/epidemiology/metabolism
;
Gonadotropin-Releasing Hormone/*agonists
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Humans
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Insulin Resistance
;
Lipids/blood
;
Lipoproteins, HDL/blood
;
Male
;
Metabolic Syndrome X/epidemiology/metabolism
;
Prostatic Neoplasms/*drug therapy
;
Risk Factors
;
Triglycerides/chemistry
8.Correlation of retinol binding protein 4 with metabolic indexes of glucose and lipid, bile cholesterol saturation index.
Journal of Central South University(Medical Sciences) 2015;40(6):657-665
OBJECTIVE:
To measure retinol binding protein 4 (RBP4) levels in serum and bile and to analyze their relationship with insulin resistance, dyslipidemia or cholesterol saturation index (CSI).
METHODS:
A total of 60 patients with gallstone were divided into a diabetes group (n=30) and a control group (n=30). The concentrations of RBP4 in serum and bile were detected by enzyme-linked immunosorbent assay (ELISA). Enzyme colorimetric method was used to measure the concentration of biliary cholesterol, bile acid and phospholipid. Biliary CSI was calculated by Carey table. Partial correlation and multiple linear regression analysis were used to evaluate the correlation between the RBP4 levels in serum or bile and the above indexes.
RESULTS:
The RBP4 concentrations in serum and bile in the diabetes group were significantly elevated compared with those in the control group (both P<0.01). There was no significant difference in the serum total bile acid (TBA), serum triglyceride (TG), serum high-density lipoprotein (HDL), bile TBA, bile total cholesterol (TC) , bile phospholipids and bile CSI between the 2 groups (all P>0.05); but the serum TC, low density lipoprotein (LDL), fasting blood glucose (FBG), fasting insulin (FINS), and homeostasis model assessment for insulin resistance (HOMA-IR) in the diabetes group were significantly increased compared to those in the control group (all P<0.05). The partial correlation analysis, which was adjusted by age, showed that the bile RBP4 was positively correlated with body mass index (BMI), waist circumference (WC), FINS, FBG, TC, LDL and HOMA-IR (r=0.283, 0.405, 0.685, 0.667, 0.553, 0.424 and 0.735, respectively), and the serum RBP4 was also positively correlated with the WC, FINS, FBG, TC, LDL and HOMA-IR (r=0.317, 0.734, 0.609, 0.528, 0.386 and 0.751, respectively). Stepwise multivariate linear regression analysis suggested that the HOMA-IR, BMI and WC were independently correlated with the level of bile RBP4 (multiple regression equation: Ybile RBP4=2.372XHOMA-IR+0.420XBMI+0.178XWC-26.813), and the serum RBP4 level was correlated with the HOMA-IR and WC independently (multiple regression equation: Yserum RBP4=2.832XHOMA-IR +0.235XWC-20.128). Multiple regression equations showed that HOMA-IR was the strongest correlation factor with RBP4.
CONCLUSION
RBP4 concentrations in serum and bile in the diabetes group are significantly higher than those in the control group. HOMA-IR, BMI and WC are independently correlated with the level of bile RBP4. HOMA-IR and WC are independently correlated with the serum RBP4 level. HOMA-IR is the strongest correlation factor with RBP4. RBP4 might play an important role in the course of gallstone formation in Type 2 diabetes mellitus.
Bile
;
chemistry
;
Bile Acids and Salts
;
blood
;
Blood Glucose
;
chemistry
;
Body Mass Index
;
Cholesterol
;
chemistry
;
Diabetes Mellitus, Type 2
;
complications
;
metabolism
;
Enzyme-Linked Immunosorbent Assay
;
Gallstones
;
complications
;
Humans
;
Insulin
;
blood
;
Insulin Resistance
;
Lipoproteins, HDL
;
blood
;
Lipoproteins, LDL
;
blood
;
Phospholipids
;
chemistry
;
Retinol-Binding Proteins, Plasma
;
metabolism
;
Triglycerides
;
blood
;
Waist Circumference
9.Expression and significance of fat mass and obesity associated gene and forkhead transcription factor O1 in non-alcoholic fatty liver disease.
Jielei ZHANG ; Shan LI ; Jingyi LI ; Chao HAN ; Zhifang WANG ; Chong LI ; Xiaoman WANG ; Zhenzhen LIU ; Jianguo WEN ; Lili ZHENG
Chinese Medical Journal 2014;127(21):3771-3776
BACKGROUNDNon-alcoholic fatty liver disease (NAFLD) is a complex disorder and has been closely linked to obesity. The fat mass and obesity-associated (FTO) gene is a newly discovered gene related to obesity, which enhances oxidative stress and lipogenesis in NAFLD. The forkhead transcription factor O1 (FoxO1) is another important gene involved in NAFLD, which causes lipid disorders when insulin resistance appears in the liver. However, the interactions between FTO and FoxO1 during the pathogenesis of NAFLD have not been fully elucidated. This study was designed to identify the relationship between these two factors that are involved in the development of NAFLD.
METHODSThis study includes two parts referred to as animal and cell experiments. Twelve female SPF C57BL/6 mice were fed a high-fat diet to serve as an NAFLD animal model. Aspartate aminotransferase (AST), alanine aminotransferase (ALT), total triglyceride (TG), total cholesterol (TC), alkaline phosphatase (ALP), high-density lipoprotein (HDL), and low-density lipoprotein (LDL) were measured. Immunohistochemical analysis was used to detect the expression and histological localization of FTO, FoxO1, and adenosine monophosphate (AMP)-activated protein kinase (AMPK). The L02 cells were exposed to high fat for 24, 48, or 72 hours. Oil red O staining was used to detect intracellular lipid droplets. Reverse transcription-polymerase chain reaction was used for analyzing the levels of FTO and FoxO1 mRNA.
RESULTSAt the end of 10 weeks, ALP, ALT, AST, and LDL were significantly increased (P < 0.01), while TC and TG were also significantly higher (P < 0.05). In addition, HDL was significantly decreased (P < 0.05). The FTO and FoxO1 proteins were weakly expressed in the control group, but both FTO and FoxO1 were expressed significantly higher (P < 0.01) in the experimental group, and the expression of the two factors was significantly correlated. AMPK in the high-fat group showed a low level of correlation with FTO, but not with FoxO1. Oil Red O staining results showed that the cells cultured in 50% fetal bovine serum for 24, 48, or 72 hours exhibited steatosis. FTO and FoxO1 mRNA were increased in the high-fat group compared with the normal group (P < 0.01). The expression levels of FTO and FoxO1 mRNA were the highest at 48 hours (P < 0.05).
CONCLUSIONSA high-fat diet leads to higher expression of FTO, phosphorylation of FoxO1, and decreased phosphorylation of AMPK. These results suggest that the interactions between FTO and FoxO1 are closely related to the pathogenesis of NAFLD.
Alanine Transaminase ; genetics ; metabolism ; Animals ; Aspartate Aminotransferases ; genetics ; metabolism ; Cholesterol ; metabolism ; Diet, High-Fat ; adverse effects ; Disease Models, Animal ; Female ; Forkhead Transcription Factors ; genetics ; metabolism ; Lipoproteins, HDL ; metabolism ; Lipoproteins, LDL ; metabolism ; Liver ; metabolism ; Mice ; Mice, Inbred C57BL ; Non-alcoholic Fatty Liver Disease ; metabolism ; pathology ; Obesity ; metabolism ; pathology ; Triglycerides ; metabolism
10.Serum chemerin is elevated in patients with metabolic syndrome complicated by degenerative aortic valve disease.
Ming DONG ; Ting XIE ; Xinzhong CHEN ; Xuan CHEN
Journal of Southern Medical University 2014;34(5):651-654
OBJECTIVETo investigate the association of serum chemerin with degenerative aortic valve disease (DAVD) in patients with metabolic syndrome.
METHODSFrom July, 2012 to July, 2013, 48 patients with metabolic syndrome (mean age 56.33∓6.14 years, including 25 male and 23 female patients), 48 patients with metabolic syndrome and DAVD (mean age 60.16∓6.72 years, 24 males and 21 females), and 48 adult healthy volunteers (mean age 52.94∓8.28 years, 23 males and 25 females) were examined for triglyceride, total cholesterol, low-density lipoprotein-cholesterol, high-density lipoprotein, fasting glucose, C-reactive protein and other biochemical indexes. Serum chemerin levels were detected using ELISA for all the subjects.
RESULTSPatients with metabolic syndrome had higher levels of serum chemerin than the healthy subjects, and patients with DAVD had higher chemerin levels than those with DAVD. Multivariate logistic regression analysis showed that increased serum chemerin level is a predictor of aortic valve degeneration in patients with metabolic syndrome. Univariate linear regression analysis showed that serum chemerin levels, body mass index, systolic blood pressure, total triglyceride and C-reactive protein were associated with metabolic syndrome. Stepwise multiple linear regression analysis identified correlations of body mass index and C-reactive protein with serum chemerin level.
CONCLUSIONElevated serum chemerin level can be a predictor for DAVD in patients with metabolic syndrome.
Adult ; Aged ; Aortic Valve ; Blood Pressure ; Body Mass Index ; C-Reactive Protein ; metabolism ; Chemokines ; blood ; Cholesterol, LDL ; blood ; Female ; Heart Defects, Congenital ; complications ; Heart Valve Diseases ; complications ; Humans ; Intercellular Signaling Peptides and Proteins ; blood ; Lipoproteins, HDL ; blood ; Male ; Metabolic Syndrome ; blood ; complications ; Middle Aged ; Triglycerides ; blood

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