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Marco-Benedí V, Cenarro A, Laclaustra M, Calmarza P, Bea AM, Vila À, Morillas-Ariño C, Puzo J, Mediavilla Garcia JD, Fernández Alamán AI, Suárez Tembra M, Civeira F. Influence of triglyceride concentration in lipoprotein (a) as a function of dyslipidemia. CLINICA E INVESTIGACION EN ARTERIOSCLEROSIS : PUBLICACION OFICIAL DE LA SOCIEDAD ESPANOLA DE ARTERIOSCLEROSIS 2024; 36:71-77. [PMID: 38161102 DOI: 10.1016/j.arteri.2023.11.005] [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: 10/07/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Recently, an inverse relationship between the blood concentration of lipoprotein(a) (Lp(a)) and triglycerides (TG) has been demonstrated. The larger the VLDL particle size, the greater the presence of VLDL rich in apoliprotein E and in subjects with the apoE2/E2 genotype, the lower Lp(a) concentration. The mechanism of this inverse association is unknown. The objective of this analysis was to evaluate the Lp(a)-TG association in patients treated at the lipid units included in the registry of the Spanish Society of Atherosclerosis (SEA) by comparing the different dyslipidemias. PATIENTS AND METHODS Five thousand two hundred and seventy-five subjects ≥18 years of age registered in the registry before March 31, 2023, with Lp(a) concentration data and complete lipid profile information without treatment were included. RESULTS The mean age was 53.0 ± 14.0 years, with 48% women. The 9.5% of subjects (n = 502) had diabetes and the 22.4% (n = 1184) were obese. The median TG level was 130 mg/dL (IQR 88.0-210) and Lp(a) 55.0 nmol/L (IQR 17.9-156). Lp(a) concentration showed a negative association with TG concentration when TG values exceeded 300 mg/dL. Subjects with TG > 1000 mg/dL showed the lowest level of Lp(a), 17.9 nmol/L, and subjects with TG < 300 mg/dL had a mean Lp(a) concentration of 60.1 nmol/L. In subjects without diabetes or obesity, the inverse association of Lp(a)-TG was especially important (p < 0.001). The median Lp(a) was 58.3 nmol/L in those with TG < 300 mg/dL and 22.0 nmol/L if TG > 1000 mg/dL. No association was found between TG and Lp(a) in subjects with diabetes and obesity, nor in subjects with familial hypercholesterolemia. In subjects with multifactorial combined hyperlipemia with TG < 300 mg/dL, Lp(a) was 64.6 nmol/L; in the range of 300-399 mg/dL of TG, Lp(a) decreased to 38. 8 nmol/L, and up to 22.3 nmol/L when TG > 1000 mg/dL. CONCLUSIONS Our results show an inverse Lp(a)-TG relationship in TG concentrations > 300 mg/dL in subjects without diabetes, obesity and without familial hypercholesterolemia. Our results suggest that, in those hypertriglyceridemias due to hepatic overproduction of VLDL, the formation of Lp(a) is reduced, unlike those in which the peripheral catabolism of TG-rich lipoproteins is reduced.
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Affiliation(s)
- Victoria Marco-Benedí
- Hospital Universitario Miguel Servet, Instituto de Investigación Sanitaria Aragón (IIS Aragón), CIBERCV, Zaragoza, España; Universidad de Zaragoza, Zaragoza, España.
| | - Ana Cenarro
- Hospital Universitario Miguel Servet, Instituto de Investigación Sanitaria Aragón (IIS Aragón), CIBERCV, Zaragoza, España; Instituto Aragonés de Ciencias de la Salud (IACS), Zaragoza, España
| | - Martín Laclaustra
- Hospital Universitario Miguel Servet, Instituto de Investigación Sanitaria Aragón (IIS Aragón), CIBERCV, Zaragoza, España; Universidad de Zaragoza, Zaragoza, España
| | - Pilar Calmarza
- Hospital Universitario Miguel Servet, Instituto de Investigación Sanitaria Aragón (IIS Aragón), CIBERCV, Zaragoza, España
| | - Ana M Bea
- Hospital Universitario Miguel Servet, Instituto de Investigación Sanitaria Aragón (IIS Aragón), CIBERCV, Zaragoza, España
| | - Àlex Vila
- Unidad de Lípidos, Servicio de Medicina Interna, Hospital de Figueres, Figueres, España
| | - Carlos Morillas-Ariño
- Sección de Endocrinología y Nutrición, Hospital Universitario Dr. Peset, Valencia, España; Departamento de Medicina, Universidad de Valencia, Valencia, España
| | - José Puzo
- Unidad de Lípidos, Servicio de Análisis y Bioquímica Clínica, Hospital San Jorge, Huesca, España
| | | | | | - Manuel Suárez Tembra
- Unidad de Lípidos y Riesgo Cardiovascular, Servicio de Medicina Interna, Hospital San Rafael, A Coruña, España
| | - Fernando Civeira
- Hospital Universitario Miguel Servet, Instituto de Investigación Sanitaria Aragón (IIS Aragón), CIBERCV, Zaragoza, España; Universidad de Zaragoza, Zaragoza, España
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Pemmari T, Hämäläinen M, Ryyti R, Peltola R, Moilanen E. Dried Bilberry (Vaccinium myrtillus L.) Alleviates the Inflammation and Adverse Metabolic Effects Caused by a High-Fat Diet in a Mouse Model of Obesity. Int J Mol Sci 2022; 23:ijms231911021. [PMID: 36232316 PMCID: PMC9569776 DOI: 10.3390/ijms231911021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 09/12/2022] [Accepted: 09/16/2022] [Indexed: 12/01/2022] Open
Abstract
Obesity is an increasing problem worldwide. It is often associated with co-morbidities such as type II diabetes, atherosclerotic diseases, and non-alcoholic fatty liver disease. The risk of these diseases can be lowered by relieving the systemic low-grade inflammation associated with obesity, even without noticeable weight loss. Bilberry is an anthocyanin-rich wild berry with known antioxidant and anti-inflammatory properties. In the present study, a high-fat-diet-induced mouse model of obesity was used to investigate the effects of air-dried bilberry powder on weight gain, systemic inflammation, lipid and glucose metabolism, and changes in the gene expression in adipose and hepatic tissues. The bilberry supplementation was unable to modify the weight gain, but it prevented the increase in the hepatic injury marker ALT and many inflammatory factors like SAA, MCP1, and CXCL14 induced by the high-fat diet. The bilberry supplementation also partially prevented the increase in serum cholesterol, glucose, and insulin levels. In conclusion, the bilberry supplementation alleviated the systemic and hepatic inflammation and retarded the development of unwanted changes in the lipid and glucose metabolism induced by the high-fat diet. Thus, the bilberry supplementation seemed to support to retain a healthier metabolic phenotype during developing obesity, and that effect might have been contributed to by bilberry anthocyanins.
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Affiliation(s)
- Toini Pemmari
- The Immunopharmacology Research Group, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, 33014 Tampere, Finland
| | - Mari Hämäläinen
- The Immunopharmacology Research Group, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, 33014 Tampere, Finland
| | - Riitta Ryyti
- The Immunopharmacology Research Group, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, 33014 Tampere, Finland
| | - Rainer Peltola
- Bioeconomy and Environment, Natural Resources Institute Finland, 96100 Rovaniemi, Finland
| | - Eeva Moilanen
- The Immunopharmacology Research Group, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, 33014 Tampere, Finland
- Correspondence:
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Yu YM, Zhou BH, Yang YL, Guo CX, Zhao J, Wang HW. Estrogen Deficiency Aggravates Fluoride-Induced Liver Damage and Lipid Metabolism Disorder in Rats. Biol Trace Elem Res 2022; 200:2767-2776. [PMID: 34392477 DOI: 10.1007/s12011-021-02857-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 07/29/2021] [Indexed: 12/14/2022]
Abstract
Estrogen exerts essential role in liver metabolism, and its deficiency is frequently accompanied by a series of metabolic disorder diseases. To investigate the role of estrogen deficiency in fluorine ions (F-) induced liver injury, the ovariectomy (OVX) rat models were performed by surgically removing the ovaries, and the rats from OVX and non-OVX models were exposed to differential dose of F- (0, 25, 50 and 100 mg/L) in drinking water for 90 days. The liver morphological structure was evaluated by hematoxylin-eosin staining. Proliferation ability of hepatocytes was evaluated by 5-bromo-2-deoxyuridine (BrdU) assay. And distribution of lipid droplets in liver tissue was observed via oil red O staining. In addition, the liver function and lipid metabolism parameters in serum were detected by commercial kits. Results showed that F- induced hepatocytes morphological damage and inhibited the proliferation ability of hepatocytes; estrogen deficiency exacerbated these changes. The deposition of lipid droplets in the liver tissue was multiplicative with increased F- dose, especially after estrogen deficiency. In addition, F- exposure increased (P < 0.05 or P < 0.01) serum aminotransferase (ALT), aminotransferase (AST), alkaline phosphatase (ALP), and γ-glutamyl transpeptidase (γ-GT) activities and total bilirubin (T-bil) level; meanwhile, serum triglyceride (TG) and cholesterol (TC) levels were also elevated (P < 0.05 or P < 0.01). F--induced liver function and lipid metabolism indexes were further increased (P < 0.05 or P < 0.01) in the state of estrogen deficiency. In conclusion, estrogen deficiency aggravated F--induced liver damage and lipid metabolism disorder.
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Affiliation(s)
- Ya-Ming Yu
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471023, Henan, People's Republic of China
| | - Bian-Hua Zhou
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471023, Henan, People's Republic of China.
| | - Yi-Lin Yang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471023, Henan, People's Republic of China
| | - Cheng-Xiang Guo
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471023, Henan, People's Republic of China
| | - Jing Zhao
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471023, Henan, People's Republic of China
| | - Hong-Wei Wang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471023, Henan, People's Republic of China
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Zhang F, Duan Y, Wei Y, Zhang J, Ma X, Tian H, Wang X, Saad AAA, Li B, Wu X. The inhibition of hepatic Pxr-Oatp2 pathway mediating decreased hepatic uptake of rosuvastatin in rats with high-fat diet-induced obesity. Life Sci 2020; 257:118079. [PMID: 32668326 DOI: 10.1016/j.lfs.2020.118079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 01/21/2023]
Abstract
PURPOSE Obesity affecting drug pharmacokinetics results in the risk of the therapeutic failure or toxic side effects of drugs increasing. Unfortunately, the pharmacokinetic data in obese patients still lack for majority of drugs. Therefore, our study principally investigated the effect of obesity induced by high fat-diet (HFD) on the pharmacokinetics of rosuvastatin and explored the underlying mechanism via the hepatic pregnane X receptor (Pxr)- organic anion transporting polypeptide 2 (Oatp2) signaling pathway and multidrug resistance-associated protein 2 (Mrp2) in rats. MAIN METHODS Rats with obesity was induced by HFD for 4 weeks, and subsequently, the effect of obesity on the blood concentration, pharmacokinetic parameters and biliary excretion of rosuvastatin administrated intravenously and the hepatic uptake of rosuvastatin in the rat primary hepatocytes were evaluated. Additionally, in order to illuminate the underlying mechanism, the alterations of the mRNA expressions of Oatp2, Mrp2 and Pxr and the concentrations of lithocholic acid (LCA), glycine-LCA (GLCA) and taurine-LCA (TLCA) in liver were determined. KEY FINDINGS The blood concentration of rosuvastatin that has great relationship with the muscle toxicity increased in rats with HFD-induced obesity, which could be principally ascribed to the decreased hepatic uptake of rosuvastatin that was mainly resulted from the inhibition of hepatic Pxr-Oatp2 pathway. SIGNIFICANCE The decreased hepatic uptake of rosuvastatin causing the increase of the rosuvastatin concentration in blood under the condition of HFD-induced obesity provides a cue for clinicians to reduce the rosuvastatin dose for obese patients to avoid the occurrence risk of the muscle toxicity of rosuvastatin.
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Affiliation(s)
- Fan Zhang
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China
| | - Yingting Duan
- Lanzhou New District Health Commission of Gansu Province, China
| | - Yuhui Wei
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China
| | - Jianping Zhang
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China
| | - Xiaohua Ma
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China
| | - Haiyan Tian
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China
| | - Xiaohui Wang
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China; School of pharmacy, Lanzhou University, Lanzhou, China
| | - Abdulaziz Ahmed Abduladheem Saad
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China; School of pharmacy, Lanzhou University, Lanzhou, China
| | - Boxia Li
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China
| | - Xinan Wu
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China.
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Wu Y, Yang J, Liu X, Zhang Y, Lei A, Yi R, Tan F, Zhao X. Preventive effect of small-leaved Kuding tea ( Ligustrum robustum) on high-diet-induced obesity in C57BL/6J mice. Food Sci Nutr 2020; 8:4512-4522. [PMID: 32884731 PMCID: PMC7455952 DOI: 10.1002/fsn3.1758] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 06/09/2020] [Accepted: 06/12/2020] [Indexed: 12/11/2022] Open
Abstract
Small-leaved Kuding tea (SLKDT; Ligustrum robustum) is a traditional Chinese tea. We systematically investigated the effect of SLKDT extract on obesity. SLKDT-controlled weight gain in mice fed a high-fat diet. Tissue specimen results showed that the SLKDT extract alleviated liver damage and fat accumulation. Meanwhile, SLKDT extract improved dyslipidemia by decreasing total cholesterol, triglycerides, and low-density lipoprotein cholesterol levels and increasing high-density lipoprotein cholesterol levels. Furthermore, SLKDT extract reduced alanine aminotransferase, alkaline phosphatase, and aspartate transaminase levels in the serum and liver tissues; decreased inflammatory cytokines, including interleukin (IL)-1β, tumor necrosis factor-α, interferon-γ, and IL-6; and increased the anti-inflammatory cytokines, IL-4 and IL-10. The quantitative PCR results showed that SLKDT extract upregulated the mRNA expressions of peroxisome proliferator-activated receptor (PPAR)-α, lipoprotein lipase, carnitine palmitoyltransferase 1, and cholesterol 7 alpha hydroxylase and downregulated PPAR-γ and CCAAT/enhancer-binding protein-alpha mRNA expressions in the obese mouse livers to reduce adipocyte differentiation and fat accumulation, promote fat oxidation, and improve dyslipidemia, thereby inhibiting the immune response and alleviating liver injury. SLKDT shows a potential for preventing obesity and regulating obesity-related syndrome, so it is possible to be further developed as a novel treatment for fighting obesity.
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Affiliation(s)
- Ya Wu
- Chongqing Collaborative Innovation Center for Functional FoodChongqing University of EducationChongqingChina
- Chongqing Engineering Research Center of Functional FoodChongqing University of EducationChongqingChina
- Chongqing Engineering Laboratory for Research and Development of Functional FoodChongqing University of EducationChongqingChina
- College of Biological and Chemical EngineeringChongqing University of EducationChongqingChina
| | - Jun Yang
- Department of GastroenterologyPeople's Hospital of Chongqing Banan DistrictChongqingChina
| | - Xiaojing Liu
- Chongqing Collaborative Innovation Center for Functional FoodChongqing University of EducationChongqingChina
- College of Biological and Chemical EngineeringChongqing University of EducationChongqingChina
| | - Ying Zhang
- Chongqing Collaborative Innovation Center for Functional FoodChongqing University of EducationChongqingChina
- College of Biological and Chemical EngineeringChongqing University of EducationChongqingChina
| | - Ailing Lei
- Chongqing Collaborative Innovation Center for Functional FoodChongqing University of EducationChongqingChina
- College of Biological and Chemical EngineeringChongqing University of EducationChongqingChina
| | - Ruokun Yi
- Chongqing Collaborative Innovation Center for Functional FoodChongqing University of EducationChongqingChina
- Chongqing Engineering Research Center of Functional FoodChongqing University of EducationChongqingChina
- Chongqing Engineering Laboratory for Research and Development of Functional FoodChongqing University of EducationChongqingChina
| | - Fang Tan
- Department of Public HealthOur Lady of Fatima UniversityValenzuelaPhilippines
| | - Xin Zhao
- Chongqing Collaborative Innovation Center for Functional FoodChongqing University of EducationChongqingChina
- Chongqing Engineering Research Center of Functional FoodChongqing University of EducationChongqingChina
- Chongqing Engineering Laboratory for Research and Development of Functional FoodChongqing University of EducationChongqingChina
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Beneficial effects of lingonberry (Vaccinium vitis-idaea L.) supplementation on metabolic and inflammatory adverse effects induced by high-fat diet in a mouse model of obesity. PLoS One 2020; 15:e0232605. [PMID: 32379797 PMCID: PMC7205235 DOI: 10.1371/journal.pone.0232605] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 04/18/2020] [Indexed: 12/22/2022] Open
Abstract
Obesity is a constantly increasing health problem worldwide. It is associated with a systemic low-grade inflammation, which contributes to the development of metabolic disorders and comorbidities such as type 2 diabetes. Diet has an important role in the prevention of obesity and its adverse health effects; as a part of healthy diet, polyphenol-rich berries, such as lingonberry (Vaccinium vitis-idaea L.) have been proposed to have health-promoting effects. In the present study, we investigated the effects of lingonberry supplementation on high-fat diet induced metabolic and inflammatory changes in a mouse model of obesity. Thirty male C57BL/6N mice were divided into three groups (n = 10/group) to receive low-fat (LF), high-fat (HF) and lingonberry-supplemented high-fat (HF+LGB) diet for six weeks. Low-fat and high-fat diet contained 10% and 46% of energy from fat, respectively. Lingonberry supplementation prevented the high-fat diet induced adverse changes in blood cholesterol and glucose levels and had a moderate effect on the weight and visceral fat gain, which were 26% and 25% lower, respectively, in the lingonberry group than in the high-fat diet control group. Interestingly, lingonberry supplementation also restrained the high-fat diet induced increases in the circulating levels of the proinflammatory adipocytokine leptin (by 36%) and the inflammatory acute phase reactant serum amyloid A (SAA; by 85%). Similar beneficial effects were discovered in the hepatic expression of the inflammatory factors CXCL-14, S100A10 and SAA by lingonberry supplementation. In conclusion, the present results indicate that lingonberry supplementation significantly prevents high-fat diet induced metabolic and inflammatory changes in a murine model of obesity. The results encourage evaluation of lingonberries as a part of healthy diet against obesity and its comorbidities.
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Gao J, Liu C, Zhang H, Sun Z, Wang R. Myricitrin exhibits anti-atherosclerotic and anti-hyperlipidemic effects in diet-induced hypercholesterolemic rats. AMB Express 2019; 9:204. [PMID: 31865448 PMCID: PMC6925610 DOI: 10.1186/s13568-019-0924-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 12/02/2019] [Indexed: 01/08/2023] Open
Abstract
The present study investigated the anti-atherosclerotic potential of myricitrin in hypercholesterolemic rats. Rats were divided into the following groups: sham (standard food), control [1% high-cholesterol diet (HCD)], 1 μM myricitrin + 1% HCD, 10 μM myricitrin + 1% HCD, 100 μM myricitrin + 1% HCD, and the positive control (10 mg/kg body weight atorvastatin). The dose was given to rats via oral gavage for 45 consecutive days. Feeding of rats with 1% HCD caused substantial increases in the levels of LDL, cholesterol, and triglycerides (TG), while high-density lipoprotein (HDL) was reduced. However, rats supplemented with myricitrin had reduced levels of cholesterol, LDL, and TG to near-normal levels, whereas HDL was increased. Catalase, superoxide dismutase (SOD), glutathione peroxidase (Gpx), and reduced glutathione (GSH) levels were substantially reduced in the HCD-fed rats compared with sham rats. However, the rats supplemented with 100 μM myricitrin showed > 50% increases in these levels. Lipid peroxidation and reactive oxygen species (ROS) levels were reduced following myricitrin treatment. The aortic cell wall area was significantly increased by 14.5% in HCD-fed rats. However, rats supplemented with 1, 10, and 100 μM myricitrin showed significant reductions in the aortic cell wall area of 2.3%, 4%, and 27.5%, respectively. This is the first report of the anti-atherosclerotic and hypolipidemic effects of myricitrin in hypercholesterolemic rats. Myricitrin decreased the level of total serum cholesterol and the role of aortic atherosclerosis in hypercholesterolemic rats.
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Larsen MA, Isaksen VT, Paulssen EJ, Goll R, Florholmen JR. Postprandial leptin and adiponectin in response to sugar and fat in obese and normal weight individuals. Endocrine 2019; 66:517-525. [PMID: 31605363 DOI: 10.1007/s12020-019-02102-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 09/26/2019] [Indexed: 12/31/2022]
Abstract
PURPOSE Adipokines produced by white adipose tissue are central in the development of lifestyle diseases. Individuals in industrialized countries spend a substantial part of life in the non-fasting, postprandial state, which is associated with increased oxidation and inflammation. The aim was to study postprandial adiponectin and leptin levels after an oral fat tolerance test (OFTT) and an oral glucose tolerance test (OGTT) in obese (OB) and healthy, normal weight individuals (NW). METHODS Fifty adults with obesity (BMI ≥ 30) and 17 healthy, NW were included. Postprandial triglyceride (TG), adiponectin, and leptin levels were measured every second hour during an 8 h OFTT, and every half hour during a 2 h OGTT. RESULTS Compared with the basal level, postprandial levels of adiponectin following OFTT showed a slight initial peak, followed by a significant decrease at 8 h, in the NW. In the OB these changes were abolished. Postprandial levels of leptin decreased significantly from basal levels in the OFTT, in the NW, whereas in the OB, leptin was unchanged except for a slight increase from 2 to 8 h. During the OGTT both adiponectin and leptin levels remained unchanged in the NW, but decreased significantly in the OB. In addition, the OB had delayed TG clearance at 6 h. CONCLUSIONS A fatty meal gives postprandial changes in the secretion of adiponectin and leptin in NW, but not in OB. Our observations indicate that a potential postprandial regulatory role of adiponectin and leptin is impaired in OB, and of importance in a more comprehensive understanding of the delayed postprandial TG clearance in obese individuals.
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Affiliation(s)
- M A Larsen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway.
| | - V T Isaksen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - E J Paulssen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- Department of Nephrology and Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - R Goll
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- Department of Nephrology and Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - J R Florholmen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- Department of Nephrology and Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
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Robert C, Couëdelo L, Vaysse C, Michalski MC. Vegetable lecithins: A review of their compositional diversity, impact on lipid metabolism and potential in cardiometabolic disease prevention. Biochimie 2019; 169:121-132. [PMID: 31786232 DOI: 10.1016/j.biochi.2019.11.017] [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: 05/20/2019] [Accepted: 11/25/2019] [Indexed: 12/18/2022]
Abstract
Vegetable lecithins, widely used in the food industry as emulsifiers, are a mixture of naturally occurring lipids containing more than 50% of phospholipids (PL). PL exert numerous important physiological effects. Their amphiphilic nature notably enables them to stabilise endogenous lipid droplets, conferring them an important role in lipoprotein transport, functionality and metabolism. In addition, beneficial effects of dietary lecithin on metabolic disorders have been reported since the 1990s. This review attempts to summarize the effects of various vegetable lecithins on lipid and lipoprotein metabolism, as well as their potential application in the treatment of dyslipidemia associated with metabolic disorders. Despite controversial data concerning the impact of vegetable lecithins on lipid digestion and intestinal absorption, the beneficial effect of lecithin supplementation on plasma and hepatic lipoprotein and cholesterol levels is unequivocal. This is especially true in hyperlipidemic patients. Furthermore, the immense compositional diversity of vegetable lecithins endows them with a vast range of biochemical and biological properties, which remain to be explored in detail. Data on the effects of vegetable lecithins alternative to soybean, both as supplements and as ingredients in different foods, is undoubtedly lacking. Given the exponential demand for vegetable products alternative to those of animal origin, it is of primordial importance that future research is undertaken in order to elucidate the mechanisms by which individual fatty acids and PL from various vegetable lecithins modulate lipid metabolism. The extent to which they may influence parameters associated with metabolic disorders, such as intestinal integrity, low-grade inflammation and gut microbiota must also be assessed.
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Affiliation(s)
- Chloé Robert
- Univ Lyon, CarMeN Laboratory, Inserm, INRAE, INSA Lyon, Université Claude Bernard Lyon 1, Lyon-Sud Medical School, Pierre-Bénite, FR-69310, France; ITERG, Equipe Nutrition, Santé et Biochimie des Lipides, Canéjan, FR-33610, Canéjan, France
| | - Leslie Couëdelo
- ITERG, Equipe Nutrition, Santé et Biochimie des Lipides, Canéjan, FR-33610, Canéjan, France
| | - Carole Vaysse
- ITERG, Equipe Nutrition, Santé et Biochimie des Lipides, Canéjan, FR-33610, Canéjan, France
| | - Marie-Caroline Michalski
- Univ Lyon, CarMeN Laboratory, Inserm, INRAE, INSA Lyon, Université Claude Bernard Lyon 1, Lyon-Sud Medical School, Pierre-Bénite, FR-69310, France.
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Wang C, Wang H, Zhao Z, Xiao S, Zhao Y, Duan C, Gao L, Li S, Wang J. Pediococcus acidilactici AS185 attenuates early atherosclerosis development through inhibition of lipid regulation and inflammation in rats. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.103424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Hamjane N, Benyahya F, Mechita MB, Nourouti NG, Barakat A. The complications of overweight and obesity according to obesity indicators (body mass index and waist circumference values) in a population of Tangier (northern Morocco): A cross-sectional study. Diabetes Metab Syndr 2019; 13:2619-2624. [PMID: 31405685 DOI: 10.1016/j.dsx.2019.07.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 07/12/2019] [Indexed: 01/07/2023]
Abstract
AIM The aim of this work was to study overweight and obesity and their associated complications according to obesity indicators in a population of Tangier. METHODS A total of 480 overweight and obese patients were included in this study, referred to hospital Duc Tovar of Tangier during a period of 12 months. The collection of data has been done through a questionnaire which included anthropometric, clinical and biochemical characteristics of each patient. Statistical analyses included chi2 test, student's t-test, ANOVA, and multiple linear regression analyses. RESULTS The mean age of our patients was 45.56 ± 12.23 years, the mean body mass index (BMI) was 33.97 ± 5.84 Kg/m2 and the average waist circumference (WC) was 109.78 ± 15.42 cm. Overweight affected 25.2% and obesity 74.8%, whose 88.8% of subjects had abdominal obesity. All the metabolic abnormalities were significantly associated with abdominal obesity (measured by WC). However, only total cholesterol (p₌0.001) and triglycerides (p₌0.000) were significantly associated with different classes of obesity (measured by BMI). The most common complications of obesity and overweight were: type 2 diabetes (56.8%), arterial hypertension (52%), dyslipidaemia (43.9%), and cardiovascular disease (CVD) (24.3%). Hypertension and hyperglycaemia were the major risk factors for developing CVD with OR = 3.81 (95% CI:1.363-10.698; p < 0.05) and OR = 2.610 (95% CI:1.648-4.133; p < 0.001) respectively. CONCLUSION Obesity exposes to several chronic complications, the most important in our study were type 2 diabetes and hypertension; these complications increased significantly with abdominal obesity that has constituted important risk factors of CVD.
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Affiliation(s)
- Nadia Hamjane
- Laboratory of Biomedical Genomics and Oncogenetics, Faculty of Sciences and Technology, Abdelmalek Essaadi University, Tangier, Morocco.
| | | | - Mohcine Bennani Mechita
- Laboratory of Biomedical Genomics and Oncogenetics, Faculty of Sciences and Technology, Abdelmalek Essaadi University, Tangier, Morocco.
| | - Naima Ghailani Nourouti
- Laboratory of Biomedical Genomics and Oncogenetics, Faculty of Sciences and Technology, Abdelmalek Essaadi University, Tangier, Morocco.
| | - Amina Barakat
- Laboratory of Biomedical Genomics and Oncogenetics, Faculty of Sciences and Technology, Abdelmalek Essaadi University, Tangier, Morocco.
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12
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Chang KJ, Lin JA, Chen SY, Weng MH, Yen GC. Silymarin protects against high fat diet-evoked metabolic injury by induction of glucagon-like peptide 1 and sirtuin 1. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.03.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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13
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Park JH, Ahn EK, Kim JK, Oh JS. Antihyperlipidemic Activity of Ligularia fischeri Extract in Mice Fed a High-Carbohydrate Diet. J Med Food 2019; 22:374-383. [PMID: 30801226 DOI: 10.1089/jmf.2018.4248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Ligularia fischeri, indigenous to eastern Asia, has been used as a traditional herbal medicine. Ligularia fischeri reportedly possesses a number of biological activities such as antimutagenic, antioxidant, antigenotoxic, and anti-inflammation. This study demonstrated the effects of ethanol extracts of Ligularia fischeri (ELF) on a high-carbohydrate diet (HCD)-induced hyperlipidemia in C57BL/6 mice. The mice were divided into six groups (n = 7/group) as follows: normal diet, HCD, or HCD+ELF (100, 200, 400, and 800 mg/kg/day), which were orally administered daily for 12 weeks. Various lipid parameters and histological changes in liver and fat tissue were compared among the treatment and control groups. ELF remarkably reduced body weight gain and attenuated hyperlipidemia by improving the plasma levels of total cholesterol, triglycerides, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, atherogenic index, and cardiac risk factor. Moreover, ELF decreased the HCD-induced hepatic accumulation of lipid droplets and adipocyte hypertrophy. These regulatory effects of ELF appeared to be mediated through the phosphorylation of AMP-activated protein kinase, acetyl-CoA carboxylase, sterol regulatory element-binding protein-1c, and expression of fatty acid synthase. Taken together, these findings indicate a functional role for ELF in the regulation of HCD-induced obesity and hyperlipidemia.
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Affiliation(s)
- Ju-Hyoung Park
- 1 Department of Pharmacy, Dankook University, Cheonan, Chungnam, Korea
| | - Eun-Kyung Ahn
- 2 Department of Bio-Center, Gyeonggido Business and Science Accelerator, Suwon, Gyeonggi, Korea
| | - Jin-Kyu Kim
- 2 Department of Bio-Center, Gyeonggido Business and Science Accelerator, Suwon, Gyeonggi, Korea
| | - Joa Sub Oh
- 1 Department of Pharmacy, Dankook University, Cheonan, Chungnam, Korea
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14
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Larsen MA, Isaksen VT, Moen OS, Wilsgaard L, Remijn M, Paulssen EJ, Florholmen J, Goll R. Leptin to adiponectin ratio - A surrogate biomarker for early detection of metabolic disturbances in obesity. Nutr Metab Cardiovasc Dis 2018; 28:1114-1121. [PMID: 30145019 DOI: 10.1016/j.numecd.2018.06.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/05/2018] [Accepted: 06/26/2018] [Indexed: 01/11/2023]
Abstract
AIM To study if the leptin to adiponectin (L:A) ratio, can be a potential biomarker for postprandial triglyceride clearance, insulin resistance (IR) or leptin resistance (LR) in apparently healthy obese, and obese individuals with established metabolic disease. METHODS AND RESULTS Fifty adult subjects with obesity (BMI ≥30); of which 36 metabolic healthy obese (MHO), and 14 metabolic dysregulated obese (MDO), with clinical and/or biochemical signs of metabolic disease were included. Seventeen healthy, normal weight subjects represented the control group. Postprandial triglyceride (TG) levels were measured in an 8 h oral fat tolerance test (OFTT). IR by HOMA-IR, L:A ratio and indirect LR were measured. In the MHO group, 71.4%, 69.4% and 86.1%, had delayed TG clearance, IR and LR, respectively; whereas in the MDO group this was detected in 85.7%, 71.4% and 91.7%, respectively. A combination of all three metabolic risk factors was found in 39.8% of the MHO and in 42.9% of the MDO patients. Receiver operating characteristics (ROC) analysis revealed that a cut-off value for the L:A ratio of >1.65 for the control group (PPV 1.0, NPV 0.91) and >3.65 for the obese subjects (PPV 0.86, NPV 0.48) predicted the delayed TG clearance with a good specificity and sensitivity. Detecting a combined risk with at least 2/3 metabolic risk factors, the ROC yielded the most suitable L:A ratio cut-off at >1.88. CONCLUSION L:A ratio was able to detect early metabolic disturbances in obese individuals, and may be a potential useful clinical surrogate biomarker of metabolic disorders.
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Affiliation(s)
- M A Larsen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway.
| | - V T Isaksen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - O S Moen
- Department of Nephrology and Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - L Wilsgaard
- Department of Nephrology and Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - M Remijn
- Department of Nephrology and Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - E J Paulssen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway; Department of Nephrology and Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - J Florholmen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway; Department of Nephrology and Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - R Goll
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway; Department of Nephrology and Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
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15
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Chung YH, Bang JS, Kang CM, Goh JW, Lee HS, Hong SM, Kim DS, Park ES, Jung TW, Shin YK, Lee JH, Jeong JH. Aqueous Extract of Humulus japonicus Attenuates Hyperlipidemia and Fatty Liver in Obese Mice. J Med Food 2018; 21:999-1008. [DOI: 10.1089/jmf.2017.4135] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Yoon Hee Chung
- Department of Anatomy, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Joon Seok Bang
- College of Pharmacy, Sookmyung Women's University, Seoul, Korea
| | - Chang Muk Kang
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Ji Won Goh
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Ho Sung Lee
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Seok Myeong Hong
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Dong-Seok Kim
- Department of Biochemistry, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Eon Sub Park
- Department of Pathology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Tae Woo Jung
- Research Administration Team, Seoul National University Bundang Hospital, Seong-nam, Korea
| | - Yong Kyoo Shin
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Jong Hyuk Lee
- Department of Pharmaceutical Engineering, College of Life and Health Science, Hoseo University, Asan, Korea
| | - Ji Hoon Jeong
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Korea
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16
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Xu J, Ma C, Chen M, Rong S, Gao H, Xia Z, Huang F. Lipingshu capsule improves atherosclerosis associated with lipid regulation and inflammation inhibition in apolipoprotein E-deficient mice. Lipids Health Dis 2018; 17:182. [PMID: 30064511 PMCID: PMC6069707 DOI: 10.1186/s12944-018-0823-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 07/10/2018] [Indexed: 12/18/2022] Open
Abstract
Background Atherosclerosis (AS) is mainly responsible for cardiovascular diseases. The present study investigated whether Lipingshu capsule (LPS), whose ingredients are present in health food stores, has beneficial effect on AS. Methods C57BL/6 J mice were given a low fat rodent diet and assigned as control group (CON). ApoE−/− mice were placed on high fat rodent diet and randomly separated into high fat diet (HFD) group and HFD + LPS group whose animals were given 0.9 g/kg.BW LPS daily for 10 weeks. Atherosclerotic lesions in aorta and aortic root were evaluated. Serum lipids and multiple cytokine were measured. Results ApoE−/− mice fed with high fat diet had serious aortic lesions, whereas LPS markedly decreased plaque area of the total aorta and of the aortic root. LPS recovered the serum lipid profiles by substantially reducing TC, LDL-C, TG and Ox-LDL contents. Multi-cytokine analysis revealed greater serum levels of IL-1α, IL-1β, IL-6, IFN-γ, GMCSF, RANTES and TNF-α induced by high fat diet slumped with LPS treatment. Conclusion LPS reduces atherosclerotic lesions and thus alleviates AS by lipid profile modulation and inflammation inhibition.
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Affiliation(s)
- Jiqu Xu
- Department of Nutriology, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China.,Hubei Key Laboratory of Lipid Chemistry and Nutrition, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China.,Key Laboratory of Oilseeds processing, Ministry of Agriculture, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China
| | - Congcong Ma
- Department of Nutriology, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China.,Hubei Key Laboratory of Lipid Chemistry and Nutrition, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China.,Key Laboratory of Oilseeds processing, Ministry of Agriculture, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China
| | - Meng Chen
- Department of Nutriology, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China.,Hubei Key Laboratory of Lipid Chemistry and Nutrition, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China.,Key Laboratory of Oilseeds processing, Ministry of Agriculture, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China
| | - Shuang Rong
- Department of Nutrition and Food Hygiene, School of Public Health, Medical College, Wuhan University of Science and Technology, No. 2, Huangjiahu Road, Wuhan, 430065, China
| | - Hui Gao
- Department of Nutrition and Food HygieneSchool of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, People's Republic of China
| | - Zumeng Xia
- Functional Oil Laboratory Associated by Oil Crops Research Institute, Chinese Academy of Agricultural Sciences and Infinite (China) Co., LTD., 66 Jianzhong Road, Guangzhou, 510665, People's Republic of China.
| | - Fenghong Huang
- Department of Nutriology, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China. .,Hubei Key Laboratory of Lipid Chemistry and Nutrition, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China. .,Key Laboratory of Oilseeds processing, Ministry of Agriculture, 2 Xudong Second Road, Wuhan, 430062, People's Republic of China.
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17
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Karlsson EA, Schultz-Cherry S, Rosch JW. Protective Capacity of Statins during Pneumonia Is Dependent on Etiological Agent and Obesity. Front Cell Infect Microbiol 2018; 8:41. [PMID: 29497602 PMCID: PMC5819214 DOI: 10.3389/fcimb.2018.00041] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 01/31/2018] [Indexed: 01/14/2023] Open
Abstract
Acute respiratory infections are a leading cause of death worldwide. Clinical data is conflicted regarding whether statins improve outcomes for pneumonia. Potential confounding factors including specific etiology of pneumonia as well as obesity could potentially mask protective benefit. Obesity is a risk factor for high cholesterol, the main target for statin therapy. We demonstrate that statin intervention conferred no protective benefit in the context of wild-type mice regardless of infectious agent. Statin intervention conferred either a protective benefit, during influenza infection, or detrimental effect, in the case of pneumococcal infection, in obese animals. These data suggest etiology of pneumonia in the context of obesity could be dramatically altered by the protective effects of statin therapy during bacterial and viral pneumonia.
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Affiliation(s)
- Erik A Karlsson
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN, United States
| | - Stacey Schultz-Cherry
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN, United States
| | - Jason W Rosch
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN, United States
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18
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Yirui Capsules Alleviate Atherosclerosis by Improving the Lipid Profile and Reducing Inflammation in Apolipoprotein E-Deficient Mice. Nutrients 2018; 10:nu10020142. [PMID: 29382111 PMCID: PMC5852718 DOI: 10.3390/nu10020142] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/08/2018] [Accepted: 01/16/2018] [Indexed: 02/06/2023] Open
Abstract
Atherosclerosis (AS) is the main cause of cardiovascular diseases. This study investigated Yirui (YR) capsules, whose ingredients are available in health food stores, against AS and the underlying mechanisms. Male apolipoprotein E-deficient mice fed a high-fat diet for 10 weeks developed severe aortic lesions, but YR significantly decreased the plaque area in the total aorta and aortic root. YR affected the serum lipid profile by significantly reducing total cholesterol, low-density lipoprotein cholesterol (LDL-C), triglyceride (TG), and oxidative modification of LDL-C (Ox-LDL) levels. In addition, multi-cytokine analysis revealed that higher serum levels of interleukin-1 alpha (IL-1α), interleukin-1 beta (IL-1β), interleukin-3 (IL-3), interleukin-6 (IL-6), interleukin-27 (IL-27), tumor necrosis factor alpha, interferon gamma, and regulated on activation, normal T cell expressed and secreted (RANTES), which were induced by a high-fat diet, declined with YR treatment. These results suggest that YR reduces the atherosclerotic plaque burden, thereby alleviating AS by modulating the lipid profile and inhibiting inflammation.
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19
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Wu Z, Xia Z, Wu B, Wei F, Lv X, Xie Y, Xu S, Xu J, Chen H, Huang F. Lipid profiling in serum from apolipoprotein E-knock out mice fed with different diets and its application to the study of the regulatory effect on lipid metabolism. Food Funct 2018; 9:5103-5114. [DOI: 10.1039/c8fo01076e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A lipidome profiling platform was established that could evaluate the cardiovascular health products from lipid changes, their metabolism regulation and intervention mechanism in chronic disease, such as atherosclerosis.
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20
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Sahebkar A, Simental-Mendía LE, Reiner Ž, Kovanen PT, Simental-Mendía M, Bianconi V, Pirro M. Effect of orlistat on plasma lipids and body weight: A systematic review and meta-analysis of 33 randomized controlled trials. Pharmacol Res 2017; 122:53-65. [DOI: 10.1016/j.phrs.2017.05.022] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 05/22/2017] [Accepted: 05/22/2017] [Indexed: 12/29/2022]
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21
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Dusanov S, Brandal K, Heggen E, Tonstad S. Associations of Circulating PYY 3-36 Concentrations with Metabolic Syndrome in Extremely Obese Subjects. Metab Syndr Relat Disord 2016; 14:410-415. [PMID: 27513679 DOI: 10.1089/met.2016.0031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The gut hormone peptide YY3-36 (PYY3-36) plays major roles in regulation of appetite and energy metabolism, mediates beneficial effects of bariatric surgery, and may be a potential weight-reducing and glucose-modulating therapy. Obesity may influence the metabolic expression of circulating PYY3-36 and metabolic markers. We studied the relationship of PYY3-36 concentrations with metabolic syndrome (MetSyn) components, lipids, insulin resistance, and inflammatory biomarkers in subjects with extreme obesity. METHODS We measured MetSyn components and PYY3-36, lipids, hormones, homeostasis model assessment (HOMA) index, and inflammatory biomarkers in consecutively referred patients (180 women and 111 men) aged 18-78 years with body mass index (BMI) ≥40 kg/m2. Associations of PYY3-36 to components, insulin resistance, and biomarkers were examined with partial correlations and linear regression. RESULTS PYY3-36 concentrations were not related to MetSyn components, HOMA index, or to inflammatory biomarker or leptin concentrations. PYY3-36 concentrations correlated with systolic blood pressure (r = 0.21; P < 0.0001) after adjustment for age and gender. In linear regression analysis, PYY3-36 concentrations were associated with systolic blood pressure after adjustment for age, gender, and central obesity in the entire sample (Beta 0.21; 95% CI 0.09-0.34) as well as in subjects not taking blood pressure-lowering medication (Beta 0.19; 95% CI 0.04-0.36). These associations were not statistically significant in the small subset of participants (22%) with type 2 diabetes. CONCLUSIONS In extremely obese patients, fasting PYY3-36 concentrations were linked to systolic blood pressure, but not to other components of MetSyn, suggesting divergence between pathways of blood pressure and glucose/body weight regulation. However, this finding will need to be further investigated.
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Affiliation(s)
- Sasa Dusanov
- 1 Section for Preventive Cardiology, Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital , Oslo, Norway
| | | | - Eli Heggen
- 1 Section for Preventive Cardiology, Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital , Oslo, Norway
| | - Serena Tonstad
- 1 Section for Preventive Cardiology, Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital , Oslo, Norway
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22
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Shi L, Wang J, Wang Y, Feng Y. MDG-1, an Ophiopogon polysaccharide, alleviates hyperlipidemia in mice based on metabolic profile of bile acids. Carbohydr Polym 2016; 150:74-81. [PMID: 27312615 DOI: 10.1016/j.carbpol.2016.05.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 04/01/2016] [Accepted: 05/04/2016] [Indexed: 01/15/2023]
Abstract
Hyperlipidemia is a chronic metabolic disorder with systemic complications that is prevalent worldwide. MDG-1, a water-soluble β-d-fructan polysaccharide from Ophiopogon japonicas has potent hypolipidemic and weight-control effects. The present study aimed to investigate the effects of MDG-1 on lipid metabolic disorders in diet-induced obese mice based on the metabolic profile of bile acids. C57BL/6 mice were treated with a low-fat diet, high-fat diet or high fat mixed with 1‰ (w/w) MDG-1 diet for 12 weeks. The results showed that MDG-1 inhibited body weight gain and lowered serum and liver total cholesterol contents in obese mice. In addition, MDG-1 could adsorb bile acids in the gut lumen and reduce their reabsorption, thus promoting cholesterol catabolism. Furthermore, MDG-1 inhibited the expression of the farnesoid X receptor, but activated the liver X receptor. Our findings shed new light on the mechanism of MDG-1 in the control of lipids.
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Affiliation(s)
- Linlin Shi
- Engineering Research Center of Modern Preparation Technology of TCM, Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, PR China
| | - Jie Wang
- Institute of Chinese Material Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, PR China
| | - Yuan Wang
- Engineering Research Center of Modern Preparation Technology of TCM, Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, PR China.
| | - Yi Feng
- Engineering Research Center of Modern Preparation Technology of TCM, Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, PR China.
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23
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Kim SW, Choi JH, Mukherjee R, Hwang KC, Yun JW. Proteomic identification of fat-browning markers in cultured white adipocytes treated with curcumin. Mol Cell Biochem 2016; 415:51-66. [PMID: 26915100 DOI: 10.1007/s11010-016-2676-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 02/17/2016] [Indexed: 01/09/2023]
Abstract
We previously reported that curcumin induces browning of primary white adipocytes via enhanced expression of brown adipocyte-specific genes. In this study, we attempted to identify target proteins responsible for this fat-browning effect by analyzing proteomic changes in cultured white adipocytes in response to curcumin treatment. To elucidate the role of curcumin in fat-browning, we conducted comparative proteomic analysis of primary adipocytes between control and curcumin-treated cells using two-dimensional electrophoresis combined with MALDI-TOF-MS. We also investigated fatty acid metabolic targets, mitochondrial biogenesis, and fat-browning-associated proteins using combined proteomic and network analyses. Proteomic analysis revealed that 58 protein spots from a total of 325 matched spots showed differential expression between control and curcumin-treated adipocytes. Using network analysis, most of the identified proteins were proven to be involved in various metabolic and cellular processes based on the PANTHER classification system. One of the most striking findings is that hormone-sensitive lipase (HSL) was highly correlated with main browning markers based on the STRING database. HSL and two browning markers (UCP1, PGC-1α) were co-immunoprecipitated with these markers, suggesting that HSL possibly plays a role in fat-browning of white adipocytes. Our results suggest that curcumin increased HSL levels and other browning-specific markers, suggesting its possible role in augmentation of lipolysis and suppression of lipogenesis by trans-differentiation from white adipocytes into brown adipocytes (beige).
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Affiliation(s)
- Sang Woo Kim
- Catholic Kwandong University, International St. Mary's Hospital, Incheon Metropolitan City, 404-834, Republic of Korea. .,Institute for Bio-Medical Convergence, College of Medicine, Catholic Kwandong University, Gangneung-si, Gangwon-do, 210-701, Republic of Korea.
| | - Jae Heon Choi
- Department of Biotechnology, Daegu University, Kyungsan, Kyungbuk, 712-714, Republic of Korea
| | - Rajib Mukherjee
- Department of Biotechnology, Daegu University, Kyungsan, Kyungbuk, 712-714, Republic of Korea
| | - Ki-Chul Hwang
- Catholic Kwandong University, International St. Mary's Hospital, Incheon Metropolitan City, 404-834, Republic of Korea.,Institute for Bio-Medical Convergence, College of Medicine, Catholic Kwandong University, Gangneung-si, Gangwon-do, 210-701, Republic of Korea
| | - Jong Won Yun
- Department of Biotechnology, Daegu University, Kyungsan, Kyungbuk, 712-714, Republic of Korea.
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24
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Larsen MA, Goll R, Lekahl S, Moen OS, Florholmen J. Delayed clearance of triglyceride-rich lipoproteins in young, healthy obese subjects. Clin Obes 2015; 5:349-57. [PMID: 26469529 PMCID: PMC5111784 DOI: 10.1111/cob.12118] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 06/18/2015] [Accepted: 06/24/2015] [Indexed: 01/22/2023]
Abstract
Obesity is associated with the metabolic syndrome. The aims were, first, to study the postprandial triglyceride clearance in young, healthy obese subjects and, second, to investigate if fasting triglycerides can predict delayed postprandial triglyceride clearance. Eighteen apparently healthy, obese subjects with no clinical signs of metabolic disturbances participated. Controls were age- and sex-matched, healthy, normal weight subjects. Subclinical markers of metabolic disturbances were assessed by measuring postprandial triglycerides in serum and in chylomicrons by oral fat tolerance test. Postprandial triglyceride clearance for 8 h was assessed indirectly as removal of the lipid from serum during the oral fat tolerance test. Insulin resistance was measured by the homeostasis model assessment of insulin resistance (HOMA-IR). Twelve (66%) of the apparently healthy obese individuals had insulin resistance measured by HOMA-IR. There was a delayed clearance of serum triglycerides and chylomicron triglycerides at 6 h when compared with the control group, while, at 8 h, the differences were only detected for the chylomicron triglyceride clearance. Triglyceride response was significantly greater in the obese subjects. Fasting triglycerides in upper normal level predicted a delayed postprandial triglyceride clearance and insulin resistance. In young, apparently healthy obese subjects early metabolic disturbances including insulin resistance and delayed postprandial triglyceride clearance can be detected. Fasting serum triglyceride in upper normal level predicted delayed postprandial triglyceride clearance and insulin resistance.
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Affiliation(s)
- M A Larsen
- Research Group of Gastroenterology and Nutrition, Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
| | - R Goll
- Research Group of Gastroenterology and Nutrition, Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
- Department of Gastroenterology, Clinic of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - S Lekahl
- Childrens Department, Morbid Obesity Center, Helse Sør-Øst, Tønsberg, Norway
| | - O S Moen
- Research Group of Gastroenterology and Nutrition, Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
| | - J Florholmen
- Research Group of Gastroenterology and Nutrition, Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
- Department of Gastroenterology, Clinic of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
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Lee HS, Nam Y, Chung YH, Kim HR, Park ES, Chung SJ, Kim JH, Sohn UD, Kim HC, Oh KW, Jeong JH. Beneficial effects of phosphatidylcholine on high-fat diet-induced obesity, hyperlipidemia and fatty liver in mice. Life Sci 2014; 118:7-14. [PMID: 25445436 DOI: 10.1016/j.lfs.2014.09.027] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 09/24/2014] [Accepted: 09/25/2014] [Indexed: 02/07/2023]
Abstract
AIMS Soybean-derived PC is an essential cell membrane phospholipid that is composed of unsaturated fatty acids, including oleic acid. The present study aimed to evaluate the potential alleviation effects of soybean PC on high fat diet (HFD)-induced obesity and its related complications. MAIN METHODS We fed C57BL/6 mice a HFD for 12 weeks and administered PC orally for 8 or 12 weeks at different doses. At the end of the experiment, blood was prepared for biochemical analysis and leptin ELISA. Aorta, epididymal and mesenteric fat and liver were removed surgically, weighed and observed for histological or immunohistochemical changes. KEY FINDINGS PC significantly prevented body weight gain and lipid accumulation and alleviated hyperlipidemia by decreasing triglyceride (TG) and total cholesterol (TC) levels and the atherogenic index in serum or by increasing the HDL/TC ratio. Aortic apoE expression and serum leptin levels were suppressed by PC treatment in the HFD-induced obese mouse model. Elevated serum aspartate aminotransferase and alanine aminotransferase levels in HFD-fed mice were decreased in the PC groups. PC treatment significantly decreased HFD-induced liver weight and hepatic lipid accumulation. SIGNIFICANCE PC treatment alleviated HFD-induced obese status and obesity-related complications such as hyperlipidemic changes that induce cardiovascular disease and NAFLD.
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Affiliation(s)
- Ho Sung Lee
- Department of Pharmacology, College of Medicine, Chung-ang University, Seoul 156-756, Republic of Korea
| | - Yunsung Nam
- Department of Pharmacology, College of Medicine, Chung-ang University, Seoul 156-756, Republic of Korea
| | - Yoon Hee Chung
- Department of Anatomy, College of Medicine, Chung-ang University, Seoul 156-756, Republic of Korea
| | - Hak Rim Kim
- Department of Pharmacology, College of Medicine, Dankook University, Chungnam, Republic of Korea
| | - Eon Sub Park
- Departments of Pathology, College of Medicine, Chung-ang University, Seoul 156-756, Republic of Korea
| | - Su Jin Chung
- Department of Pharmacology, College of Medicine, Chung-ang University, Seoul 156-756, Republic of Korea
| | - Jung Hyo Kim
- Department of Pharmacology, College of Pharmacy, Chung-ang University, Seoul 156-756, Republic of Korea
| | - Uy Dong Sohn
- Department of Pharmacology, College of Pharmacy, Chung-ang University, Seoul 156-756, Republic of Korea
| | - Hyoung-Chun Kim
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Chunchon 200-701, Republic of Korea
| | - Keon Woong Oh
- Departments of Pathology, College of Medicine, Chung-ang University, Seoul 156-756, Republic of Korea; Christmas clinic, Sin-gal-dong, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Ji Hoon Jeong
- Department of Pharmacology, College of Medicine, Chung-ang University, Seoul 156-756, Republic of Korea.
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26
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Bray G, Look M, Ryan D. Treatment of the obese patient in primary care: targeting and meeting goals and expectations. Postgrad Med 2013; 125:67-77. [PMID: 24113665 DOI: 10.3810/pgm.2013.09.2692] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Obesity is a serious disease associated with increased patient risk of several comorbidities, including type 2 diabetes mellitus, cardiovascular disease, dyslipidemia, hypertension, some cancers, and greater mortality. Furthermore, obesity has a deleterious impact on quality of life and increases health care costs. Moderate weight loss of 5% to 10% has been shown to significantly improve several patient cardiometabolic risk factors and physical functioning, however, it is often difficult to begin the weight-loss conversation with patients. Primary care providers play a critical role in discussing the health effects of excess weight with patients, managing obesity-related comorbidities, and recommending appropriate weight-loss strategies. Open communication, realistic goal setting, and consistent monitoring are key factors in implementing an effective weight-loss program in the primary care setting. Although diet and lifestyle modifications are the first lines of approach and the foundation of any weight-loss strategy, in many cases, additional interventions may be necessary, including medical or surgical management. Herein, we discuss the approaches that primary care providers should consider when recommending appropriate weight-loss strategies for overweight/obese patients to achieve clinically meaningful weight loss, including pharmacotherapies approved for chronic management of patients with obesity, to be used as adjuncts to diet and lifestyle modifications, and surgical options.
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Affiliation(s)
- George Bray
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA.
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27
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Cazzola R, Cassani E, Barichella M, Cestaro B. Impaired fluidity and oxidizability of HDL hydrophobic core and amphipathic surface in dyslipidemic men. Metabolism 2013; 62:986-91. [PMID: 23414907 DOI: 10.1016/j.metabol.2013.01.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 01/10/2013] [Accepted: 01/11/2013] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To examine and compare the composition, fluidity and oxidizability of HDL hydrophobic core and amphipathic surface of two groups of adult males (25kg/m²<BMI<30kg/m²), the former mixed dyslipidemic patients (MD) and the latter age- and BMI-matched healthy controls. METHODS AND RESULTS Pyrenyl-cholesteryl ester and pyrenyl-phosphatidylcholine, respectively incorporated in HDL core or surface were used for measuring both 2,2'-azobis-2-methyl-propanimidamide-dihydrochloride-induced peroxidation kinetics and fluidities of these regions. In comparison with the controls, MD HDL showed: a) higher free cholesterol to phospholipid ratio in surface and triacylglycerols to cholesteryl ester ratio in the core, b) higher malondialdehyde levels and lower alpha-tocopherol and beta-carotene to neutral lipid ratios, c) a more rigid surface and more fluid core, d) dramatically decreased lag-time and increased propagation rate of peroxidation kinetic in the core, but only an increased propagation rate on the surface. CONCLUSION These results suggest that better knowledge of the physical-chemical properties and oxidizability of HDL core and surface could contribute to better understanding of the mechanisms connecting HDL alteration to increased risk of CDV in MD.
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Affiliation(s)
- Roberta Cazzola
- Department of Biomedical and Clinical Sciences L. Sacco-Faculty of Medicine and Surgery-University of Milan, Via G. B. Grassi, 74 - 20157 Milan, Italy.
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28
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Bays HE, Toth PP, Kris-Etherton PM, Abate N, Aronne LJ, Brown WV, Gonzalez-Campoy JM, Jones SR, Kumar R, La Forge R, Samuel VT. Obesity, adiposity, and dyslipidemia: a consensus statement from the National Lipid Association. J Clin Lipidol 2013; 7:304-83. [PMID: 23890517 DOI: 10.1016/j.jacl.2013.04.001] [Citation(s) in RCA: 288] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 04/02/2013] [Accepted: 04/03/2013] [Indexed: 01/04/2023]
Abstract
The term "fat" may refer to lipids as well as the cells and tissue that store lipid (ie, adipocytes and adipose tissue). "Lipid" is derived from "lipos," which refers to animal fat or vegetable oil. Adiposity refers to body fat and is derived from "adipo," referring to fat. Adipocytes and adipose tissue store the greatest amount of body lipids, including triglycerides and free cholesterol. Adipocytes and adipose tissue are active from an endocrine and immune standpoint. Adipocyte hypertrophy and excessive adipose tissue accumulation can promote pathogenic adipocyte and adipose tissue effects (adiposopathy), resulting in abnormal levels of circulating lipids, with dyslipidemia being a major atherosclerotic coronary heart disease risk factor. It is therefore incumbent upon lipidologists to be among the most knowledgeable in the understanding of the relationship between excessive body fat and dyslipidemia. On September 16, 2012, the National Lipid Association held a Consensus Conference with the goal of better defining the effect of adiposity on lipoproteins, how the pathos of excessive body fat (adiposopathy) contributes to dyslipidemia, and how therapies such as appropriate nutrition, increased physical activity, weight-management drugs, and bariatric surgery might be expected to impact dyslipidemia. It is hoped that the information derived from these proceedings will promote a greater appreciation among clinicians of the impact of excess adiposity and its treatment on dyslipidemia and prompt more research on the effects of interventions for improving dyslipidemia and reducing cardiovascular disease risk in overweight and obese patients.
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Affiliation(s)
- Harold E Bays
- Louisville Metabolic and Atherosclerosis Research Center, 3288 Illinois Avenue, Louisville, KY 40213, USA.
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Mastinu A, Pira M, Pani L, Pinna GA, Lazzari P. NESS038C6, a novel selective CB1 antagonist agent with anti-obesity activity and improved molecular profile. Behav Brain Res 2012; 234:192-204. [PMID: 22771813 DOI: 10.1016/j.bbr.2012.06.033] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 06/27/2012] [Accepted: 06/28/2012] [Indexed: 01/27/2023]
Abstract
The present work aims to study the effects induced by a chronic treatment with a novel CB1 antagonist (NESS038C6) in C57BL/6N diet-induced obesity (DIO) mice. Mice treated with NESS038C6 and fed with a fat diet (NESS038C6 FD) were compared with the following three reference experimental groups: DIO mice fed with the same fat diet used for NESS038C6 and treated with vehicle or the reference CB1 antagonist/inverse agonist rimonabant, "VH FD" and "SR141716 FD", respectively; DIO mice treated with vehicle and switched to a normal diet (VH ND). NESS038C6 chronic treatment (30 mg/kg/day for 31 days) determined a significant reduction in DIO mice weight relative to that of VH FD. The entity of the effect was comparable to that detected in both SR141716 FD and VH ND groups. Moreover, if compared to VH FD, NESS038C6 FD evidenced: (i) improvement of cardiovascular risk factors; (ii) significant decrease in adipose tissue leptin expression; (iii) increase in mRNA expression of hypothalamic orexigenic peptides and a decrease of anorexigenic peptides; (iv) expression increase of metabolic enzymes and peroxisome proliferator-activated receptor-α in the liver; (v) normalization of monoaminergic transporters and neurotrophic expression in mesolimbic area. However, in contrast to the case of rimonabant, the novel CB1 antagonist improved the disrupted expression profile of genes linked to the hunger-satiety circuit, without altering monoaminergic transmission. In conclusion, the novel CB1 antagonist compound NESS038C6 may represent a useful candidate agent for the treatment of obesity and its metabolic complications, without or with reduced side effects relative to those instead observed with rimonabant.
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Affiliation(s)
- Andrea Mastinu
- CNR, Istituto di Farmacologia Traslazionale, UOS Cagliari, Edificio 5, Loc. Piscinamanna, 09010 Pula, Italy.
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30
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Yang XL, Chan JC. Diabetes, insulin and cancer risk. World J Diabetes 2012; 3:60-4. [PMID: 22532884 PMCID: PMC3334387 DOI: 10.4239/wjd.v3.i4.60] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Revised: 03/03/2012] [Accepted: 04/10/2012] [Indexed: 02/05/2023] Open
Abstract
There is a consensus that both type 1 and type 2 diabetes are associated with a spectrum of cancers but the underlying mechanisms are largely unknown. On the other hand, there are ongoing debates about the risk association of insulin use with cancer. We have briefly reviewed recent related research on exploration of risk factors for cancer and pharmacoepidemiological investigations into drug use in diabetes on the risk of cancer, as well as the current understanding of metabolic pathways implicated in intermediary metabolism and cellular growth. Based on the novel findings from the Hong Kong Diabetes Registry and consistent experimental evidence, we argue that use of insulin to control hyperglycemia is unlikely to contribute to increased cancer risk and that dysregulations in the AMP-activated protein kinase pathway due to reduced insulin action and insulin resistance, the insulin-like growth factor-1 (IGF-1)-cholesterol synthesis pathway and renin-angiotensin system, presumably due to reduced insulin secretion and hyperglycemia, may play causal roles in the increased risk of cancer in diabetes. Further exploration into the possible causal relationships between abnormalities of these pathways and the risk of cancer in diabetes is warranted.
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Affiliation(s)
- Xi-Lin Yang
- Xi-Lin Yang, Department of Epidemiology, Public Health College, Tianjin Medical University, Tianjin 300070, China
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Abstract
Nutritional epigenetics has emerged as a novel mechanism underlying gene-diet interactions, further elucidating the modulatory role of nutrition in aging and age-related disease development. Epigenetics is defined as a heritable modification to the DNA that regulates chromosome architecture and modulates gene expression without changes in the underlying bp sequence, ultimately determining phenotype from genotype. DNA methylation and post-translational histone modifications are classical levels of epigenetic regulation. Epigenetic phenomena are critical from embryonic development through the aging process, with aberrations in epigenetic patterns emerging as aetiological mechanisms in many age-related diseases such as cancer, CVD and neurodegenerative disorders. Nutrients can act as the source of epigenetic modifications and can regulate the placement of these modifications. Nutrients involved in one-carbon metabolism, namely folate, vitamin B12, vitamin B6, riboflavin, methionine, choline and betaine, are involved in DNA methylation by regulating levels of the universal methyl donor S-adenosylmethionine and methyltransferase inhibitor S-adenosylhomocysteine. Other nutrients and bioactive food components such as retinoic acid, resveratrol, curcumin, sulforaphane and tea polyphenols can modulate epigenetic patterns by altering the levels of S-adenosylmethionine and S-adenosylhomocysteine or directing the enzymes that catalyse DNA methylation and histone modifications. Aging and age-related diseases are associated with profound changes in epigenetic patterns, though it is not yet known whether these changes are programmatic or stochastic in nature. Future work in this field seeks to characterise the epigenetic pattern of healthy aging to ultimately identify nutritional measures to achieve this pattern.
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