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Das TK, Kar P, Panchali T, Khatun A, Dutta A, Ghosh S, Chakrabarti S, Pradhan S, Mondal KC, Ghosh K. Anti-obesity potentiality of Lactiplantibacillus plantarum E2_MCCKT isolated from a fermented beverage, haria: a high fat diet-induced obese mice model study. World J Microbiol Biotechnol 2024; 40:168. [PMID: 38630156 DOI: 10.1007/s11274-024-03983-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 04/04/2024] [Indexed: 04/19/2024]
Abstract
Obesity is a growing epidemic worldwide. Several pharmacologic drugs are being used to treat obesity but these medicines exhibit side effects. To find out the alternatives of these drugs, we aimed to assess the probiotic properties and anti-obesity potentiality of a lactic acid bacterium E2_MCCKT, isolated from a traditional fermented rice beverage, haria. Based on the 16S rRNA sequencing, the bacterium was identified as Lactiplantibacillus plantarum E2_MCCKT. The bacterium exhibited in vitro probiotic activity in terms of high survivability in an acidic environment and 2% bile salt, moderate auto-aggregation, and hydrophobicity. Later, E2_MCCKT was applied to obese mice to prove its anti-obesity potentiality. Adult male mice (15.39 ± 0.19 g) were randomly divided into three groups (n = 5) according to the type of diet: normal diet (ND), high-fat diet (HFD), and HFD supplemented with E2_MCCKT (HFT). After four weeks of bacterial treatment on the obese mice, a significant reduction of body weight, triglyceride, and cholesterol levels, whereas, improvements in serum glucose levels were observed. The bacterial therapy led to mRNA up-regulation of lipolytic transcription factors such as peroxisome proliferator-activated receptor-α which may increase the expression of fatty acid oxidation-related genes such as acyl-CoA oxidase and carnitine palmitoyl-transferase-1. Concomitantly, both adipocytogenesis and fatty acid synthesis were arrested as reflected by the down-regulation of sterol-regulatory element-binding protein-1c, acetyl-CoA carboxylase, and fatty acid synthase genes. In protein expression study, E2_MCCKT significantly increased IL-10 expression while decreasing pro-inflammatory cytokine (IL-1Ra and TNF-α) expression. In conclusion, the probiotic Lp. plantarum E2_MCCKT might have significant anti-obesity effects on mice.
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Affiliation(s)
- Tridip Kumar Das
- Department of Biological Sciences, Midnapore City College, Midnapore, 721129, West Bengal, India
- Biodiversity and Environmental Studies Research Center, Midnapore City College Affiliated to Vidyasagar University, Midnapore, West Bengal, India
| | - Priyanka Kar
- Department of Biological Sciences, Midnapore City College, Midnapore, 721129, West Bengal, India
- Biodiversity and Environmental Studies Research Center, Midnapore City College Affiliated to Vidyasagar University, Midnapore, West Bengal, India
| | - Titli Panchali
- Department of Biological Sciences, Midnapore City College, Midnapore, 721129, West Bengal, India
- Biodiversity and Environmental Studies Research Center, Midnapore City College Affiliated to Vidyasagar University, Midnapore, West Bengal, India
| | - Amina Khatun
- Department of Biological Sciences, Midnapore City College, Midnapore, 721129, West Bengal, India
- Biodiversity and Environmental Studies Research Center, Midnapore City College Affiliated to Vidyasagar University, Midnapore, West Bengal, India
| | - Ananya Dutta
- Department of Biological Sciences, Midnapore City College, Midnapore, 721129, West Bengal, India
- Biodiversity and Environmental Studies Research Center, Midnapore City College Affiliated to Vidyasagar University, Midnapore, West Bengal, India
| | - Smita Ghosh
- Department of Biological Sciences, Midnapore City College, Midnapore, 721129, West Bengal, India
- Biodiversity and Environmental Studies Research Center, Midnapore City College Affiliated to Vidyasagar University, Midnapore, West Bengal, India
| | - Sudipta Chakrabarti
- Department of Biological Sciences, Midnapore City College, Midnapore, 721129, West Bengal, India
| | - Shrabani Pradhan
- Department of Biological Sciences, Midnapore City College, Midnapore, 721129, West Bengal, India
| | - Keshab Chandra Mondal
- Department of Microbiology, Vidyasagar University, Midnapore, 721102, West Bengal, India
| | - Kuntal Ghosh
- Department of Biological Sciences, Midnapore City College, Midnapore, 721129, West Bengal, India.
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NMR-Based Metabolomics Approach to Investigate the Effects of Fruits of Acanthopanax sessiliflorus in a High-Fat Diet Induced Mouse Model. Metabolites 2021; 11:metabo11080505. [PMID: 34436446 PMCID: PMC8398628 DOI: 10.3390/metabo11080505] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 01/12/2023] Open
Abstract
The prevalence of obesity is rapidly increasing and is recognized as a serious health problem. To investigate metabolic changes in an obese model after administration of Acanthopanax sessiliflorus, mice were divided into four groups: normal diet, high-fat diet (HFD), HFD with treatment fenofibrate, and A. sessiliflorus fruit extract. The liver tissue of mice was analyzed using nuclear magnetic resonance (NMR) spectrometry-based metabolomics. In multivariate statistical analyses, the HFD group was discriminated from the normal diet group, and the group fed A. sessiliflorus fruit was discriminated from the HFD group. In biomarker analysis between the HFD group and the group fed A. sessiliflorus fruit, alanine, inosine, formate, pyroglutamate, taurine, and tyrosine, with AUC values of 0.7 or more, were found. The levels of these metabolites were distinguished from the HFD mouse model. Changes in these metabolites were confirmed to act on metabolic pathways related to antioxidant activity.
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Park JH, Ahn EK, Hwang MH, Park YJ, Cho YR, Ko HJ, Jeong W, Yang SH, Seo DW, Oh JS. Improvement of Obesity and Dyslipidemic Activity of Amomum tsao-ko in C57BL/6 Mice Fed a High-Carbohydrate Diet. Molecules 2021; 26:molecules26061638. [PMID: 33804179 PMCID: PMC7998585 DOI: 10.3390/molecules26061638] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/27/2021] [Accepted: 03/11/2021] [Indexed: 12/12/2022] Open
Abstract
Amomum tsao-ko Crevost et Lemaire (Zingiberaceae) is a medicinal herb found in Southeast Asia that is used for the treatment of malaria, abdominal pain, dyspepsia, etc. The aim of this study was to investigate the effect of an ethanol extract of Amomum tsao-ko (EAT) on obesity and hyperlipidemia in C57BL/6 mice fed a high-carbohydrate diet (HCD). First, the mice were divided into five groups (n = 6/group) as follows: normal diet, HCD, and HCD+EAT (100, 200, and 400 mg/kg/day), which were orally administered with EAT daily for 84 days. Using microcomputed tomography (micro-CT) analysis, we found that EAT inhibited not only body-weight gain, but also visceral fat and subcutaneous fat accumulation. Histological analysis confirmed that EAT decreased the size of fat tissues. EAT consistently improved various indices, including plasma levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein, high-density lipoprotein, atherogenic index, and cardiac risk factors, which are related to dyslipidemia—a major risk factor for heart disease. The contents of TC and TG, as well as the lipid droplets of HCD-induced hepatic accumulation in the liver tissue, were suppressed by EAT. Taken together, these findings suggest the possibility of developing EAT as a therapeutic agent for improving HCD-induced obesity and hyperlipidemia.
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Affiliation(s)
- Ju-Hyoung Park
- College of Pharmacy, Dankook University, Dandae-ro 119, Dongnam, Cheonan, Chungnam 31116, Korea; (J.-H.P.); (D.-W.S.)
| | - Eun-Kyung Ahn
- Bio-Center, Gyeonggido Business and Science Accelerator, Gwanggyo-ro 147, Yeoungtong, Suwon, Gyeonggi 16229, Korea; (E.-K.A.); (M.H.H.); (Y.J.P.); (Y.-R.C.); (H.-J.K.); (W.J.)
| | - Min Hee Hwang
- Bio-Center, Gyeonggido Business and Science Accelerator, Gwanggyo-ro 147, Yeoungtong, Suwon, Gyeonggi 16229, Korea; (E.-K.A.); (M.H.H.); (Y.J.P.); (Y.-R.C.); (H.-J.K.); (W.J.)
| | - Young Jin Park
- Bio-Center, Gyeonggido Business and Science Accelerator, Gwanggyo-ro 147, Yeoungtong, Suwon, Gyeonggi 16229, Korea; (E.-K.A.); (M.H.H.); (Y.J.P.); (Y.-R.C.); (H.-J.K.); (W.J.)
| | - Young-Rak Cho
- Bio-Center, Gyeonggido Business and Science Accelerator, Gwanggyo-ro 147, Yeoungtong, Suwon, Gyeonggi 16229, Korea; (E.-K.A.); (M.H.H.); (Y.J.P.); (Y.-R.C.); (H.-J.K.); (W.J.)
| | - Hye-Jin Ko
- Bio-Center, Gyeonggido Business and Science Accelerator, Gwanggyo-ro 147, Yeoungtong, Suwon, Gyeonggi 16229, Korea; (E.-K.A.); (M.H.H.); (Y.J.P.); (Y.-R.C.); (H.-J.K.); (W.J.)
| | - Wonsik Jeong
- Bio-Center, Gyeonggido Business and Science Accelerator, Gwanggyo-ro 147, Yeoungtong, Suwon, Gyeonggi 16229, Korea; (E.-K.A.); (M.H.H.); (Y.J.P.); (Y.-R.C.); (H.-J.K.); (W.J.)
| | - Seung Hwan Yang
- Department of Biotechnology, Chonnam National University, Yeosu, Chonnam 59626, Korea;
| | - Dong-Wan Seo
- College of Pharmacy, Dankook University, Dandae-ro 119, Dongnam, Cheonan, Chungnam 31116, Korea; (J.-H.P.); (D.-W.S.)
| | - Joa Sub Oh
- College of Pharmacy, Dankook University, Dandae-ro 119, Dongnam, Cheonan, Chungnam 31116, Korea; (J.-H.P.); (D.-W.S.)
- Correspondence:
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Zhang J, Yang Y, Qian XK, Song PF, Zhao YS, Guan XQ, Zou LW, Bao X, Wang H. Design, Synthesis, and Structure-Activity Relationship Study of Pyrazolones as Potent Inhibitors of Pancreatic Lipase. ChemMedChem 2021; 16:1600-1604. [PMID: 33527731 DOI: 10.1002/cmdc.202000850] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 01/30/2021] [Indexed: 02/06/2023]
Abstract
Pancreatic lipase (PL), a key target for the prevention and treatment of obesity, plays crucial roles in the hydrolysis and absorption of in dietary fat. In this study, a series of pyrazolones was synthesized, and their inhibitory effects against PL were assayed by using 4-methylumbelliferyl oleate (4-MUO) as optical substrate for PL. Comprehensive structure-activity relationship analysis of these pyrazolones led us to design and synthesize a novel compound P32 (5-(naphthalen-2-yl)-2-phenyl-4-(thiophen-2-ylmethyl)-2,4-dihydro-3H-pyrazol-3-one) as a potent mixed-competitive inhibitor of PL (IC50 =0.30 μM). In addition, P32 displayed some selectivity over other known serine hydrolases. A molecular docking study for P32 demonstrated that the inhibitory activity of P32 towards PL could be attributed to the π-π interactions of 2-naphthyl unit (R1 ) and hydrophobic interactions of phenyl moiety (R3 ) with the active site of PL. Thus, P32 could serve as promising lead compound for the development of more efficacious and selective pyrazolones-type PL inhibitors for biomedical applications.
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Affiliation(s)
- Jing Zhang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Yang Yang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Xing-Kai Qian
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Pei-Fang Song
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Yi-Shu Zhao
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Xiao-Qing Guan
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Li-Wei Zou
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Xiaoze Bao
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Hong Wang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
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Combinations of Legume Protein Hydrolysates Synergistically Inhibit Biological Markers Associated with Adipogenesis. Foods 2020; 9:foods9111678. [PMID: 33212815 PMCID: PMC7696775 DOI: 10.3390/foods9111678] [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: 10/02/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 12/20/2022] Open
Abstract
The objective was to investigate the anti-adipogenesis potential of selected legume protein hydrolysates (LPH) and combinations using biochemical assays and in silico predictions. Black bean, green pea, chickpea, lentil and fava bean protein isolates were hydrolyzed using alcalase (A) or pepsin/pancreatin (PP). The degree of hydrolysis ranged from 15.5% to 35.5% for A-LPH and PP-LPH, respectively. Antioxidant capacities ranged for ABTS•+ IC50 from 0.3 to 0.9 Trolox equivalents (TE) mg/mL, DPPH• IC50 from 0.7 to 13.5 TE mg/mL and nitric oxide (NO) inhibition IC50 from 0.3 to 1.3 mg/mL. LPH from PP–green pea, A–green pea and A–black bean inhibited pancreatic lipase (PL) (IC50 = 0.9 mg/mL, 2.2 mg/mL and 1.2 mg/mL, respectively) (p < 0.05). For HMG-CoA reductase (HMGR) inhibition, the LPH from A–chickpea (0.15 mg/mL), PP–lentil (1.2 mg/mL), A–green pea (1.4 mg/mL) and PP–green pea (1.5 mg/mL) were potent inhibitors. Combinations of PP–green pea + A–black bean (IC50 = 0.4 mg/mL), A–green pea + PP–green pea (IC50 = 0.9 mg/mL) and A–black bean + A–green pea (IC50 = 0.6 mg/mL) presented synergistic effects to inhibit PL. A–chickpea + PP–lentil (IC50 = 0.8 mg/mL) and PP–lentil + A–green pea (IC50 = 1.3 mg/mL) interacted additively to inhibit HMGR and synergistically in the combination of A–chickpea + PP–black bean (IC50 = 1.3 mg/mL) to block HMGR. Peptides FEDGLV and PYGVPVGVR inhibited PL and HMGR in silico, showing predicted binding energy interactions of −7.6 and −8.8 kcal/mol, respectively. Combinations of LPH from different legume protein sources could increase synergistically their anti-adipogenic potential.
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Hou XD, Guan XQ, Cao YF, Weng ZM, Hu Q, Liu HB, Jia SN, Zang SZ, Zhou Q, Yang L, Ge GB, Hou J. Inhibition of pancreatic lipase by the constituents in St. John's Wort: In vitro and in silico investigations. Int J Biol Macromol 2020; 145:620-633. [DOI: 10.1016/j.ijbiomac.2019.12.231] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/24/2019] [Accepted: 12/24/2019] [Indexed: 12/11/2022]
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Lin CH, Shao L, Zhang YM, Tu YJ, Zhang Y, Tomlinson B, Chan P, Liu Z. An evaluation of liraglutide including its efficacy and safety for the treatment of obesity. Expert Opin Pharmacother 2019; 21:275-285. [PMID: 31790314 DOI: 10.1080/14656566.2019.1695779] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Introduction: The prevalence of obesity is increasing worldwide and associated conditions, particularly type 2 diabetes mellitus (T2DM), also show increasing prevalence. Lifestyle intervention should be the first line of management for obesity but additional pharmacotherapy is often required and bariatric surgery is appropriate in more severe cases. Drugs acting as glucagon-like peptide-1 receptor agonists (GLP-1RAs) developed for the management of T2DM reduce body weight and liraglutide is the first GLP-1RA to be approved for the treatment of obesity in patients with and without T2DM.Areas covered: In this review of relevant published material, the authors summarize the pharmacokinetics, pharmacodynamics, clinical efficacy and safety of liraglutide for the treatment of obesity.Expert opinion: Liraglutide effectively reduces body weight and body fat through mechanisms involving reduced appetite and lowered energy intake, independent of its glucose-lowering effects. Like most of the other medications currently available for obesity, liraglutide has some common adverse effects, although generally not serious ones. Liraglutide has additional benefits in reducing cardiovascular events in patients with T2DM but the cost and the need for daily injections may limit its use in obesity. Newer GLP-1RAs, such as semaglutide, or other drugs in development for obesity may have advantages over liraglutide.
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Affiliation(s)
- Chen-Hsiu Lin
- Division of Cardiology, Department of Internal Medicine, Taipei Medical University, Taipei, Taiwan
| | - Li Shao
- The VIP Department, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yu-Mei Zhang
- The VIP Department, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yu-Ju Tu
- The VIP Department, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuzhen Zhang
- Research Center for Translational Medicine, Shanghai East Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Brian Tomlinson
- Research Center for Translational Medicine, Shanghai East Hospital Affiliated to Tongji University School of Medicine, Shanghai, China.,Faculty of Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Paul Chan
- Division of Cardiology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei City, Taiwan
| | - Zhongmin Liu
- Department of Cardiac Surgery, Shanghai East Hospital, Tongji University, Shanghai, China
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Arika W, Kibiti CM, Njagi JM, Ngugi MP. In Vitro Antioxidant Properties of Dichloromethanolic Leaf Extract of Gnidia glauca (Fresen) as a Promising Antiobesity Drug. J Evid Based Integr Med 2019; 24:2515690X19883258. [PMID: 31766874 PMCID: PMC6880035 DOI: 10.1177/2515690x19883258] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 09/14/2019] [Indexed: 12/20/2022] Open
Abstract
The acquisition of ethnobotanical information from traditional practitioners remains an empirical aspect of understanding the ethnopharmacology research. However, integration of information on chemical composition of plant extracts and their pharmacological activities forms a key resource for synthesis of new and effective therapeutics. In traditional African medicine, Gnidia glauca has folkloric remedies against obesity and its associated oxidative stress-mediated complications. However, the upsurge in its use has not been accompanied with scientific validations to support these claims. The present study aimed to determine the antioxidant potential of G glauca as a promising antiobesity agent. The antioxidant effects of the extract were assessed against 1,1-diphenyl-2-picrylhydrazyl, hydroxyl, hydrogen peroxide, nitric oxide, and superoxide radicals as well as lipid peroxidation, iron-chelating effect, and ferric-reducing power. Phytochemical analysis was conducted using gas chromatography linked to mass spectrophotometry. The results revealed that G glauca exhibited scavenging activities against all radicals formed. Besides, the extract showed iron chelation and ferric reducing abilities. The extract indicated a lower half maximal inhibitory concentration value than the standards used. For instance, the extract inhibited 50% of the formation of 2,2-diphenyl-1-picrylhydrazine at the concentration of 1.33 ± 0.03 mg/mL relative to 1.39 ± 0.06 mg/mL of the standard, vitamin C at 1% confidence limit. Similarly, the extract scavenged 50% of hydroxyl radical at 204.34 ± 10.64 μg/mL relative to 210.05 ± 8.80 μg/mL of gallic acid. The extract also contained various phytochemicals that have been associated with antiobesity effects. The synergistic effects of these phytocompounds increase their bioavailability and action on multiple molecular targets thereby correcting obesity-induced oxidative stress.
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Liu PK, Weng ZM, Ge GB, Li HL, Ding LL, Dai ZR, Hou XD, Leng YH, Yu Y, Hou J. Biflavones from Ginkgo biloba as novel pancreatic lipase inhibitors: Inhibition potentials and mechanism. Int J Biol Macromol 2018; 118:2216-2223. [DOI: 10.1016/j.ijbiomac.2018.07.085] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 07/11/2018] [Accepted: 07/12/2018] [Indexed: 12/27/2022]
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Hou XD, Ge GB, Weng ZM, Dai ZR, Leng YH, Ding LL, Jin LL, Yu Y, Cao YF, Hou J. Natural constituents from Cortex Mori Radicis as new pancreatic lipase inhibitors. Bioorg Chem 2018; 80:577-584. [DOI: 10.1016/j.bioorg.2018.07.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/02/2018] [Accepted: 07/12/2018] [Indexed: 12/20/2022]
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Fei H, Li M, Liu W, Sun L, Li N, Cao L, Meng Z, Huang W, Ding G, Wang Z, Xiao W. Potential lipase inhibitors from Chinese medicinal herbs. PHARMACEUTICAL BIOLOGY 2016; 54:2845-2850. [PMID: 27267857 DOI: 10.1080/13880209.2016.1185635] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 04/23/2015] [Accepted: 04/29/2016] [Indexed: 06/06/2023]
Abstract
CONTEXT Obesity has become a major health concern, and it places both personal and economic burdens on the world's population. Traditional Chinese medicinal herbs are rich source of lead compounds and are possible drug candidates, which may be used to treat this condition. OBJECTIVE This study screened potent pancreatic lipase inhibitors found in traditional Chinese medicinal herbs for ability to treat obesity. MATERIALS AND METHODS A porcine pancreatic lipase inhibition assay was established, and the inhibitory activity of 35 traditional Chinese medicinal herbs was evaluated at a concentration of 200 μg/mL. Two elutions of herbal extracts with strong lipase inhibitory activity were further fractionated by preparative high-performance liquid chromatography into 22 sub-fractions each, and these sub-fractions were tested for anti-lipase activity. Sub-fractions, which exhibited strong lipase inhibitory activity, were continuously fractionated into individual compounds. Two active compounds with potent anti-lipase activity were finally isolated and identified from two traditional Chinese medicinal herbs, respectively. RESULTS Among 35 traditional Chinese medicinal herbs, the 95% ethanol elutions of Panax notoginseng (Burk.) F.H. Chen (Araliaceae) and Magnolia officinalis Rehd. et Wils (Magnoliaceae) showed strong anti-lipase activity. Two compounds, including 20(S)-ginsenoside Rg3 and honokiol were identified using bioactivity-guided isolation with IC50 = 33.7 and 59.4 μg/mL, respectively. CONCLUSION 20(S)-ginsenoside Rg3 and honokiol might be suitable candidates for the treatment of obesity.
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Affiliation(s)
- Hongqiang Fei
- a State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutical Process , Jiangsu Kanion Pharmaceutical Co Ltd , Lianyungang , P.R. China
| | - Mengxuan Li
- a State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutical Process , Jiangsu Kanion Pharmaceutical Co Ltd , Lianyungang , P.R. China
| | - Wenjun Liu
- a State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutical Process , Jiangsu Kanion Pharmaceutical Co Ltd , Lianyungang , P.R. China
| | - Lin Sun
- a State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutical Process , Jiangsu Kanion Pharmaceutical Co Ltd , Lianyungang , P.R. China
| | - Na Li
- a State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutical Process , Jiangsu Kanion Pharmaceutical Co Ltd , Lianyungang , P.R. China
| | - Liang Cao
- a State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutical Process , Jiangsu Kanion Pharmaceutical Co Ltd , Lianyungang , P.R. China
| | - Zhaoqing Meng
- a State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutical Process , Jiangsu Kanion Pharmaceutical Co Ltd , Lianyungang , P.R. China
| | - Wenzhe Huang
- a State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutical Process , Jiangsu Kanion Pharmaceutical Co Ltd , Lianyungang , P.R. China
| | - Gang Ding
- a State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutical Process , Jiangsu Kanion Pharmaceutical Co Ltd , Lianyungang , P.R. China
| | - Zhenzhong Wang
- a State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutical Process , Jiangsu Kanion Pharmaceutical Co Ltd , Lianyungang , P.R. China
| | - Wei Xiao
- a State Key Laboratory of New-Tech for Chinese Medicine Pharmaceutical Process , Jiangsu Kanion Pharmaceutical Co Ltd , Lianyungang , P.R. China
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Tomlinson B, Hu M, Zhang Y, Chan P, Liu ZM. Investigational glucagon-like peptide-1 agonists for the treatment of obesity. Expert Opin Investig Drugs 2016; 25:1167-79. [PMID: 27563838 DOI: 10.1080/13543784.2016.1221925] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Obesity is a worldwide problem predisposing to type 2 diabetes mellitus (T2DM), hypertension, cardiovascular disease, cancer and other comorbidities. Lifestyle modification is the first line intervention but adjunctive pharmacotherapy is often required. The GLP-1 receptor agonists (GLP-1RAs) were developed primarily for T2DM and they also reduce body weight. Liraglutide was approved for the treatment of obesity and other GLP-1RAs are likely to be suitable for this indication. AREAS COVERED This review describes the GLP-1RAs that have been approved for the treatment of T2DM as potential candidates for the treatment of obesity and the new agents currently under development which may have advantages in patient adherence. EXPERT OPINION The GLP-1RAs offer a welcome addition to obesity pharmacotherapy. They appear to be free of serious adverse effects although uncertainty remains about possible risks of pancreatitis and neoplasms. However, they have frequent gastrointestinal side effects, particularly nausea, which limits their tolerability. Cardiovascular outcome studies in T2DM support their use and this is likely to increase in both T2DM and obesity. Other GLP-1RAs which can be given by subcutaneous injection once weekly or less frequently or by oral administration would have advantages especially if nausea is less frequent than with liraglutide.
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Affiliation(s)
- Brian Tomlinson
- a Research Center for Translational Medicine , Shanghai East Hospital Affiliated to Tongji University School of Medicine , Shanghai , China.,b Department of Medicine & Therapeutics , The Chinese University of Hong Kong , Shatin , Hong Kong
| | - Miao Hu
- b Department of Medicine & Therapeutics , The Chinese University of Hong Kong , Shatin , Hong Kong
| | - Yuzhen Zhang
- a Research Center for Translational Medicine , Shanghai East Hospital Affiliated to Tongji University School of Medicine , Shanghai , China
| | - Paul Chan
- c Division of Cardiology, Department of Internal Medicine, Wan Fang Hospital , Taipei Medical University , Taipei City , Taiwan
| | - Zhong-Min Liu
- d Department of Cardiac Surgery, Shanghai East Hospital , Tongji University , Shanghai , China
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Efficacy of Acetylshikonin in Preventing Obesity and Hepatic Steatosis in db/db Mice. Molecules 2016; 21:molecules21080976. [PMID: 27483220 PMCID: PMC6273802 DOI: 10.3390/molecules21080976] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 07/20/2016] [Accepted: 07/25/2016] [Indexed: 02/06/2023] Open
Abstract
Zicao (Lithospermum erythrorhizon) has been used in clinics as a traditional Chinese medicine for thousands of years. Acetylshikonin (AS) is the main ingredient of Zicao, Xinjiang, China. The objective of this study was to investigate the anti-obesity and anti-nonalcoholic fatty liver disease (NAFLD) efficacy of AS in a model of spontaneous obese db/db mice. Mice were divided into Wild Type (WT) groups and db/db groups, which received no treatment or treatment with 100 mg/kg/day clenbuterol (CL) hydrochloride or 540 mg/kg/day AS by oral gavage for eight weeks. The results provided the evidence that AS prevented obesity and NAFLD including reduction in body weight, food efficiency ratio, serum triglyceride (TG) and free fatty acid (FFA) levels in db/db mice. Administration of AS markedly suppressed the levels of hepatic alanine aminotransferase (ALT), aspartate aminotransferase (AST) and pro-inflammatory cytokines in treated groups when compared with that of db/db groups. Further investigation of the lipid synthesis-related protein using Western blotting revealed that hepatic protein expression of sterol regulatory element-binding protein-1 (SREBP-1), fatty acid synthetase (FAS) and 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR) were significantly downregulated by AS treatment. These findings suggest that AS exerts anti-obesity and anti-NAFLD effects through the regulation of lipid metabolism and anti-inflammatory effects.
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Abstract
Type 2 diabetes mellitus in children and adolescents is becoming an increasingly important public health concern throughout the world. This epidemic is closely associated with the increased prevalence of obesity among youth of all ethnic backgrounds, as increased visceral adipose tissue produces adipokines that increase insulin resistance. Type 2 diabetes represents one arm of the metabolic syndrome, which includes abdominal obesity, disturbed glucose regulation and insulin resistance, dyslipidemia, and hypertension. The treatment of type 2 diabetes and the metabolic syndrome poses a challenge for pediatric endocrinologists. This review provides information regarding diagnosis of type 2 diabetes in children, as well as prevention strategies, such as lifestyle modification and pharmacologic options for weight loss, including metformin, orlistat, and sibutramine. Pharmacologic treatment options, their modes of action, and clinical indications for use are also reviewed. Treatment regimens for youth-onset type 2 diabetes that are discussed include metformin, sulfonylureas, glucosidase inhibitors, thiazolidinediones, glucagon-like peptide-1, and insulin.
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Affiliation(s)
- Jennifer L Miller
- Division of Pediatric Endocrinology, University of Florida, Gainesville, Florida, USA
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Kumar N, Choudhary NS. Treating morbid obesity in cirrhosis: A quest of holy grail. World J Hepatol 2015; 7:2819-2828. [PMID: 26668693 PMCID: PMC4670953 DOI: 10.4254/wjh.v7.i28.2819] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 08/29/2015] [Accepted: 11/25/2015] [Indexed: 02/06/2023] Open
Abstract
The problem of obesity is increasing worldwide in epidemic proportions; the situation is similarly becoming more common in patients with cirrhosis which negatively affect the prognosis of disease and also makes liver transplantation difficult especially in the living donor liver transplantation setting where low graft to recipient weight ratio negatively affects survival. Treatment of obesity is difficult in cirrhosis due to difficulty in implementation of lifestyle measures, limited data on safety of anti-obesity drugs and high risk of surgery. Currently approved anti-obesity drugs have limited data in patients with cirrhosis. Bariatric surgery remains an option in selected compensated cirrhotic patients. Endoscopic interventions for obesity are emerging and are quite promising in patients with cirrhosis as these are minimally invasive. In present review, we briefly discuss various modalities of weight reduction in obese patients and their applicability in patients with cirrhosis.
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Choi SI, Kwak H, Kim JY, Choi JG, Lee JH. Antiadipogenic Effects of Salvia plebeia R. Br. Extracts by Extraction Conditions in 3T3-L1 Preadipocytes. ACTA ACUST UNITED AC 2015. [DOI: 10.7783/kjmcs.2015.23.3.245] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Expert Panel Report: Guidelines (2013) for the management of overweight and obesity in adults. Obesity (Silver Spring) 2014; 22 Suppl 2:S41-410. [PMID: 24227637 DOI: 10.1002/oby.20660] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Rao GHR, Thethi I, Fareed J. Vascular disease: obesity and excess weight as modulators of risk. Expert Rev Cardiovasc Ther 2014; 9:525-34. [DOI: 10.1586/erc.11.43] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Ezzat S. A study of the use of drugs in the treatment of obesity among adult females. Int J Health Care Qual Assur 2012; 25:730-41. [DOI: 10.1108/09526861211270668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PurposeObesity is a prevalent health problem among adult females in Egypt. The aim of this study is to investigate the use of drugs in managing of obesity among adult females.Design/methodology/approachA random sample of 764 obese adult females with a BMI >25 were included in the study. Data were collected using a pre‐coded questionnaire on personal characteristics, type of regimen followed, the use of anti‐obesity drugs, sources of information about medicine, compliance pattern and the outcome of using medicine.FindingsThe results show that 19.9 per cent of the females took medicines while dieting and another 11.4 per cent while dieting and exercising. Physicians were the main source of advice about anti‐obesity medicine (33.1 per cent), followed by pharmacists (25.5 per cent), peers (24.2 per cent) and mass media (17.2 per cent). Medicines stimulating the metabolism were most commonly used (42.7 per cent), followed by drugs blocking fat absorption (24.3 per cent), appetite depressants (23.3 per cent) and herbs (18.4 per cent). The most common side effects were diarrhoea (30.1 per cent) followed by headache (20.1 per cent) and depression (17.2 per cent). The data show that 47.7 per cent of the females fully complied while 30.5 per cent did not comply. The intake of medicine while dieting induced weight loss among 48.9 per cent of the subjects, 18.0 per cent did not report weight loss and 33.1 per cent stopped medicine intake. Older females and those with a BMI >35 were more keen to seek advice from a physician, were more likely to comply fully and reported the highest rate of weight loss. The use of anti‐obesity drugs was highest (44 per cent) among university graduates compared to 24.8 per cent among females with limited education.Originality/valueThis study presents the first report of the pattern of using anti‐obesity drugs in Egypt.
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Shivpuri A, Shivpuri A, Sharma S. Childhood Obesity: Review of a growing Problem. Int J Clin Pediatr Dent 2012; 5:237-41. [PMID: 25206177 PMCID: PMC4155889 DOI: 10.5005/jp-journals-10005-1175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 11/19/2012] [Indexed: 12/02/2022] Open
Abstract
The consequences of obesity in adulthood are well known. Obesity has a direct influence on mortality and acts as a risk factor for various diseases and health problems. It is associated with nonfatal but debilitating illnesses, such as respiratory difficulties, musculoskeletal disorders, skin problems and infertility. The association with fatal chronic diseases includes cardiovascular diseases, conditions related to insulin resistance and noninsulin-dependent diabetes. There has been a marked increase in the number of obese children coming for treatment to dentists, thus it is the moral responsibility of the dentists to educate both the patient and the parents of the problems of obesity and its control. A dentist may actually be the first person to inform the patient about this problem thus, a basic knowledge about it is important. How to cite this article: Shivpuri A, Shivpuri A, Sharma S. Childhood Obesity: Review of a growing Problem. Int J Clin Pediatr Dent 2012;5(3):237-241.
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Affiliation(s)
- Anubhav Shivpuri
- Ex Senior Lecturer, Department of Oral and Maxillofacial Surgery Mahatma Gandhi Dental College and Hospital, Jaipur, Rajasthan India, e-mail:
| | - Abhay Shivpuri
- Postgraduate Student, Department of Pediatrics, Bangalore Baptist Hospital, Bengaluru, Karnataka, India
| | - Sunil Sharma
- Professor and Head, Department of Oral and Maxillofacial Surgery Mahatma Gandhi Dental College and Hospital, Jaipur, Rajasthan, India
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Gálvez-Llompart M, Gálvez J, García-Domenech R, Kier LB. Modeling Drug-Induced Anorexia by Molecular Topology. J Chem Inf Model 2012; 52:1337-44. [DOI: 10.1021/ci2006092] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- María Gálvez-Llompart
- Molecular Connectivity and Drug
Design Research Unit, Faculty of Pharmacy, Department of Physical
Chemistry, University of Valencia Avd, V.A. Estellés, s/n 46100-Burjassot,
Valencia, Spain
| | - Jorge Gálvez
- Molecular Connectivity and Drug
Design Research Unit, Faculty of Pharmacy, Department of Physical
Chemistry, University of Valencia Avd, V.A. Estellés, s/n 46100-Burjassot,
Valencia, Spain
| | - Ramón García-Domenech
- Molecular Connectivity and Drug
Design Research Unit, Faculty of Pharmacy, Department of Physical
Chemistry, University of Valencia Avd, V.A. Estellés, s/n 46100-Burjassot,
Valencia, Spain
| | - Lemont B. Kier
- Center
for the Study of Biological
Complexity, Virginia Commonwealth University, P.O. Box 842030, Richmond,
Virginia 23284, United States
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Derosa G, Maffioli P. Anti-obesity drugs: a review about their effects and their safety. Expert Opin Drug Saf 2012; 11:459-71. [PMID: 22439841 DOI: 10.1517/14740338.2012.675326] [Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Amphetamines, rimonabant and sibutramine licenses as anti-obesity drugs have been withdrawn because of their adverse effects. In fact, orlistat is the only available long-term treatment for obesity. AREAS COVERED The efficacy and safety of long-term drug therapy is very important in the management obesity; for this reason, the authors decided to conduct a review on the efficacy and safety of current, past and future pharmacotherapies for weight loss. EXPERT OPINION Orlistat is a good choice for the treatment of obesity, because of its safety on cardiovascular events and its positive effects on diabetic control, even if it is not as effective as rimonabant or sibutramine in reducing body weight. Regarding emerging anti-obesity therapies in diabetic people, we currently have drugs that have already been marketed including the glucagon-like peptide-1 (GLP-1) receptor agonists exenatide and liraglutide; other than improving glycemic control, they also suppress appetite reducing body weight. Moreover, some other drugs are currently in study such as tesofensine, phentermine + topiramate, bupropion + naltrexone and bupropion + zonisamide. Furthermore, several additional gut hormone-based treatments for obesity are under investigation in Phase II and III clinical trials, with particular focus on ghrelin, peptide YY, pancreatic polypeptide, amylin and oxyntomodulin.
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Affiliation(s)
- Giuseppe Derosa
- University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Department of Internal Medicine and Therapeutics, P.le C. Golgi, 2 - 27100 Pavia, Italy.
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1-Aryl-5-(1H-pyrrol-1-yl)-1H-pyrazole-3-carboxamide: An effective scaffold for the design of either CB1 or CB2 receptor ligands. Eur J Med Chem 2011; 46:5641-53. [DOI: 10.1016/j.ejmech.2011.09.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Revised: 09/05/2011] [Accepted: 09/21/2011] [Indexed: 11/19/2022]
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Derosa G, Cicero AFG, D'Angelo A, Fogari E, Maffioli P. Effects of 1-year orlistat treatment compared to placebo on insulin resistance parameters in patients with type 2 diabetes. J Clin Pharm Ther 2011; 37:187-95. [PMID: 21812797 DOI: 10.1111/j.1365-2710.2011.01280.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE The behavioural approach is usually slow and not always sufficient to achieve optimal targets in weight and metabolic control in obese diabetic patients, and a pharmacological treatment is often necessary. The aim of this study was to compare the effects of orlistat and placebo on body weight, glycaemic and lipid profile and insulin resistance in patients with type 2 diabetes. METHODS Two hundred and fifty-four obese, diabetic patients were enrolled in this study and randomized to take orlistat 360mg or placebo for 1year. We evaluated at baseline and after 3, 6, 9 and 12months body weight, waist circumference (WC), body mass index (BMI), glycated haemoglobin (HbA(1c) ), fasting plasma glucose (FPG), post-prandial plasma glucose (PPG), fasting plasma insulin (FPI), homeostasis model assessment insulin resistance index (HOMA-IR), lipid profile, retinol-binding protein-4 (RBP-4), resistin, visfatin and high-sensitivity C-reactive protein (Hs-CRP). RESULTS AND DISCUSSION We observed a significant reduction in body weight, WC, BMI, lipid profile, RBP-4 and visfatin in the orlistat group but not in control group. Faster improvements in HbA(1c) , PPG, FPI, HOMA-IR, resistin and Hs-CRP were recorded with orlistat than with placebo. A similar decrease in FPG was seen in the two groups. Significant predictors of change in insulin resistance (HOMA-IR) were RBP-4 and resistin concentration in the orlistat group (r=-0·53, P<0·05, and r=-0·59, P<0·01, respectively). WHAT IS NEW AND CONCLUSION To the best of our knowledge, this is the first study investigating the effect of orlistat on insulin resistance and markers of inflammation. Orlistat improved lipid profile and led to faster glycaemic control and insulin resistance parameters than the control, without any serious adverse event. Orlistat also improved RBP-4 and visfatin, effects not observed with placebo.
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Affiliation(s)
- G Derosa
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy.
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Rojas J, Arraiz N, Aguirre M, Velasco M, Bermúdez V. AMPK as Target for Intervention in Childhood and Adolescent Obesity. J Obes 2010; 2011:252817. [PMID: 21318055 PMCID: PMC3034972 DOI: 10.1155/2011/252817] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Revised: 07/25/2010] [Accepted: 10/15/2010] [Indexed: 02/07/2023] Open
Abstract
Childhood obesity is a major worldwide health problem. Intervention programs to ameliorate the rate of obesity have been designed and implemented; yet the epidemic has no end near in sight. AMP-activated protein kinase (AMPK) has become one of the most important key elements in energy control, appetite regulation, myogenesis, adipocyte differentiation, and cellular stress management. Obesity is a multifactorial disease, which has a very strong genetic component, especially epigenetic factors. The intrauterine milieu has a determinant impact on adult life, since the measures taken for survival are kept throughout life thanks to epigenetic modification. Nutrigenomics studies the influence of certain food molecules on the metabolome profile, raising the question of an individualized obesity therapy according to metabolic (and probably) genetic features. Metformin, an insulin sensitizing agent, its known to lower insulin resistance and enhance metabolic profile, with an additional weight reduction capacity, via activation of AMPK. Exercise is coadjutant for lifestyle modifications, which also activates AMPK in several ways contributing to glucose and fat oxidation. The following review examines AMPK's role in obesity, applying its use as a tool for childhood and adolescent obesity.
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Affiliation(s)
- Joselyn Rojas
- Endocrine and Metabolic Diseases Research Center, University of Zulia, School of Medicine, Final Avenida 20, Edificio Multidisciplinario, primer piso, Maracaibo 4004, Venezuela
| | - Nailet Arraiz
- Endocrine and Metabolic Diseases Research Center, University of Zulia, School of Medicine, Final Avenida 20, Edificio Multidisciplinario, primer piso, Maracaibo 4004, Venezuela
| | - Miguel Aguirre
- Endocrine and Metabolic Diseases Research Center, University of Zulia, School of Medicine, Final Avenida 20, Edificio Multidisciplinario, primer piso, Maracaibo 4004, Venezuela
| | - Manuel Velasco
- Clinical Pharmacologic Unit, Vargas Medical School, Central University of Venezuela, Caracas 1010, Venezuela
| | - Valmore Bermúdez
- Endocrine and Metabolic Diseases Research Center, University of Zulia, School of Medicine, Final Avenida 20, Edificio Multidisciplinario, primer piso, Maracaibo 4004, Venezuela
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Brambilla P, Pozzobon G, Pietrobelli A. Physical activity as the main therapeutic tool for metabolic syndrome in childhood. Int J Obes (Lond) 2010; 35:16-28. [PMID: 21139560 DOI: 10.1038/ijo.2010.255] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Physical activity (PA) and diet directly influence obesity and metabolic syndrome (MS) as important determinants of body composition. Understanding how PA relates to MS in youth is of great importance, and could offer a common strategy for clinical and public health approaches to control this condition. The underlying disorder of MS is a condition of insulin resistance, and a strong relationship between PA level and insulin sensitivity is clearly ascertained. The type, duration, frequency and intensity of PA affect fuel metabolism, in particular carbohydrate and lipid oxidation. The possible modulation of metabolism because of increased fat oxidation by PA is the basis for both prevention and restoration of insulin resistance and MS in obese children. In daily clinical practice, diet followed by pharmacologic treatment are usually the approaches taken, whereas PA is often considered just a suggestion. Although diet and PA have different effects on body composition, with both contributing to fat loss, only PA increases muscle mass and thus has a direct effect on metabolic function, expressed by changes in cardiovascular risk factors. Therefore, it is important to remember their complementary but different targets in daily clinical practice, such as body weight control for diet and metabolic health for PA. In this review, we have summarized the literature on the relationship between PA and MS in pediatrics. Then, we have analyzed the possibility of using PA for MS treatment, as an alternative to drugs, by discussing the results of intervention studies, reasons for low compliance to PA, related benefits, adherence difficulties and costs. Finally, we have tried to suggest recommendations for a multiple-step PA strategy in children and adolescents at risk for MS, by considering PA as the 'key' player in treatment.
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Silvestri R, Ligresti A, La Regina G, Piscitelli F, Gatti V, Lavecchia A, Brizzi A, Pasquini S, Allarà M, Fantini N, Carai MAM, Bigogno C, Rozio MG, Sinisi R, Novellino E, Colombo G, Di Marzo V, Dondio G, Corelli F. Synthesis and biological evaluation of new N-alkyl 1-aryl-5-(1H-pyrrol-1-yl)-1H-pyrazole-3-carboxamides as cannabinoid receptor ligands. Eur J Med Chem 2010; 45:5878-86. [DOI: 10.1016/j.ejmech.2010.09.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 09/20/2010] [Accepted: 09/21/2010] [Indexed: 11/28/2022]
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Derosa G, Maffioli P, Ferrari I, D'Angelo A, Fogari E, Palumbo I, Randazzo S, Cicero AFG. Comparison between orlistat plus l-carnitine and orlistat alone on inflammation parameters in obese diabetic patients. Fundam Clin Pharmacol 2010; 25:642-51. [PMID: 21077943 DOI: 10.1111/j.1472-8206.2010.00888.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
To evaluate the effects of 1-year treatment with orlistat plus L-carnitine compared to orlistat alone on body weight, glycemic and lipid control, and inflammatory parameters in obese type 2 diabetic patients. Two hundred and fifty-eight patients with uncontrolled type 2 diabetes mellitus (T2DM) [glycated hemoglobin (HbA(1c)) > 8.0%] in therapy with different oral hypoglycemic agents or insulin were enrolled in this study and randomized to take orlistat 120 mg three times a day plus L-carnitine 2 g one time a day or orlistat 120 mg three times a day. We evaluated the following parameters at baseline and after 3, 6, 9, and 12 months: body weight, body mass index (BMI), glycated hemoglobin (HbA(1c) ), fasting plasma glucose (FPG), postprandial plasma glucose (PPG), fasting plasma insulin (FPI), homeostasis model assessment insulin resistance index (HOMA-IR), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), triglycerides (Tg), adiponectin (ADN), leptin, tumor necrosis factor-α (TNF-α), vaspin, and high-sensitivity C-reactive protein (Hs-CRP). We observed a better decrease in body weight, glycemic profile, HOMA-IR, LDL-C, and ADN and a faster improvement in FPI, TC, Tg, leptin, TNF-α, Hs-CRP with orlistat plus L-carnitine compared to orlistat alone. We also recorded an improvement in vaspin with orlistat plus l-carnitine not reached with orlistat alone. Orlistat plus L-carnitine gave a better improvement in body weight, glycemic and lipid profile compared to orlistat alone; furthermore, a faster and better improvement in inflammatory parameters was observed with orlistat plus L-carnitine compared to orlistat alone.
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Affiliation(s)
- Giuseppe Derosa
- Fondazione IRCCS Policlinico S. Matteo, Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, P.le C. Golgi, 2-27100 Pavia, Italy.
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Derosa G, Maffioli P, Salvadeo SAT, Ferrari I, Gravina A, Mereu R, D'Angelo A, Fogari E, Palumbo I, Randazzo S, Cicero AFG. Comparison of orlistat treatment and placebo in obese type 2 diabetic patients. Expert Opin Pharmacother 2010; 11:1971-82. [DOI: 10.1517/14656566.2010.493557] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Abstract
This article examines the transitions in pharmacological therapy for obesity. It reviews the current options approved by the Food and Drug Administration and several drugs approved for other indications that can be used to treat obesity as well. Because weight regulation is complex and redundant systems protect against perceived starvation, optimal treatment of obesity in individual patients will likely require different combinations of behavioral, nutritional, pharmacologic, endoscopic, and surgical therapies.
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Derosa G, Maffioli P, Ferrari I, D'Angelo A, Fogari E, Palumbo I, Randazzo S, Cicero AFG. Orlistat and L-carnitine compared to orlistat alone on insulin resistance in obese diabetic patients. Endocr J 2010; 57:777-86. [PMID: 20683173 DOI: 10.1507/endocrj.k10e-049] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Our study wants to evaluate the effects of one year treatment with orlistat plus L-carnitine compared to orlistat alone on body weight, glycemic and lipid control, and insulin resistance state in type 2 diabetic patients. Two hundred and fifty-eight patients with uncontrolled type 2 diabetes mellitus (T2DM) [glycated hemoglobin (HbA(1c)) > 8.0%] in therapy with different oral hypoglycemic agents or insulin were enrolled in this study and randomised to take orlistat 120 mg three times a day plus L-carnitine 2 g one time a day or orlistat 120 mg three times a day. We evaluated at baseline, and after 3, 6, 9, and 12 months these parameters: body weight, body mass index (BMI), HbA(1c), fasting plasma glucose (FPG), post-prandial plasma glucose (PPG), fasting plasma insulin (FPI), homeostasis model assessment insulin resistance index (HOMA-IR), total cholesterol (TC), low density lipoprotein-cholesterol (LDL-C), high density lipoprotein-cholesterol (HDL-C), triglycerides (Tg), retinol binding protein-4 (RBP-4), resistin, visfatin, high sensitivity-C reactive protein (Hs-CRP). We observed a faster, and better decrease of body weight, HbA(1c), FPG, PPG, LDL-C, HOMA-IR with orlistat plus L-carnitine compared to orlistat. A faster improvement of TC, Tg, FPI, resistin, RBP-4, visfatin, and Hs-CRP was reached with orlistat plus L-carnitine compared to orlistat. We can safely conclude that the association of orlistat plus L-carnitine was better than orlistat in improving body weight, glycemic and lipid profile, insulin resistance, and inflammatory parameters and no significant adverse events were recorded.
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Affiliation(s)
- Giuseppe Derosa
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy.
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Dangyuja (Citrus grandisOsbeck) Peel Improves Lipid Profiles and Alleviates Hypertension in Rats Fed a High-Fat Diet. Lab Anim Res 2010. [DOI: 10.5625/lar.2010.26.4.361] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Boström J, Olsson RI, Tholander J, Greasley PJ, Ryberg E, Nordberg H, Hjorth S, Cheng L. Novel thioamide derivatives as neutral CB1 receptor antagonists. Bioorg Med Chem Lett 2010; 20:479-82. [DOI: 10.1016/j.bmcl.2009.11.125] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Revised: 11/19/2009] [Accepted: 11/21/2009] [Indexed: 11/16/2022]
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You JS, Sung MJ, Chang KJ. Evaluation of 8-week body weight control program including sea tangle (Laminaria japonica) supplementation in Korean female college students. Nutr Res Pract 2009; 3:307-14. [PMID: 20098584 PMCID: PMC2809238 DOI: 10.4162/nrp.2009.3.4.307] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Revised: 12/07/2009] [Accepted: 12/10/2009] [Indexed: 12/16/2022] Open
Abstract
This study was conducted to evaluate the effects of a body weight control program with supplementation of sea tangle (20 g/day) on 22 female college students. The contents of the program for 8 weeks contained diet therapy, exercise and behavioral modification through nutrition education. Body composition, dietary habit scores, serum lipid profiles, daily nutrient intakes and the quality of life were assessed at the beginning and at the end of the program. Average age of subjects and height were 20.8 years and 161.9 cm, respectively. After 8 weeks, there were significant reductions in body weight, body fat mass, percent body fat, waist-hip ratio and BMI. The dietary habit score such as a balanced diet, regularity of mealtime, overeating, eating while watching TV or using the computer and eating salty food were increased significantly. Serum lipid levels such as total cholesterol level, LDL-cholesterol level and triglyceride level were decreased but not significantly. There were decreases in intake of energy, protein and fat and increases in intakes of dietary fiber, folic acid, calcium and potassium from the beginning to the end of the program. There were significant improvements on subcomponents of quality of life; physical functioning, general-health and vitality. The limitation of this study was the fact that there was no control group, but an overall evaluation suggests the 8-week body weight control program consisting of diet therapy, exercise and behavioral modification with supplementation of sea tangle would be helpful to improve the body composition, dietary habits, daily nutrient intakes and quality of life in Korean female college students.
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Affiliation(s)
- Jeong Soon You
- Department of Food and Nutrition, Inha University, 253 Youghyun-dong, Nam-gu, Incheon 402-751, Korea
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Abstract
Obesity is associated with increased risk of conditions such as hypertension, dyslipidaemia, diabetes mellitus, and obstructive sleep apnoea. Pharmacotherapy for obesity should be considered in combination with lifestyle changes in obese patients, or overweight patients with other conditions that put them at risk of developing heart disease. Sibutramine and orlistat are the only two anti-obesity medications approved for long-term use. Sibutramine is a serotonergic and adrenergic drug that reduces food intake. Orlistat is a gastrointestinal lipase inhibitor that interferes with fat absorption. However, it commonly causes flatulence and diarrhoea. Rimonabant is the first of a series of endocannabinoid receptor antagonists. It was approved by the Committee for Medicinal Products for Human Use of the European Medicines Agency (EMEA) as an adjunct to diet and exercise in treating obesity in 2006. However, despite the extensive clinical trial data, EMEA announced in 2008 that it has recommended suspension of rimonabant because of its psychiatric side effects. Studies evaluating the long-term safety and efficacy of anti-obesity agents are needed.
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Affiliation(s)
- Mingfang Li
- Department of Medicine, the University of Hong Kong, Hong Kong
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Elangbam CS. Review paper: Current strategies in the development of anti-obesity drugs and their safety concerns. Vet Pathol 2009; 46:10-24. [PMID: 19112110 DOI: 10.1354/vp.46-1-10] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Obesity is a well-established risk factor for hypertension, hyperlipidemia, type II diabetes, coronary heart disease, stroke, obstructive sleep apnea, asthma, orthopedic disorders, and certain cancers. Despite this risk, the prevalence of obesity continues to increase worldwide, and there is a growing demand for safe and effective antiobesity drugs. Previous antiobesity drugs or anorexigens, particularly centrally acting agents, have poor safety records. Life-threatening safety issues led to the withdrawal of aminorex in 1968, fenfluramine and dexfenfluramine in 1997, and phenylpropanolamine in 2000. Many of the safety issues, such as valvulopathy with fenfluramine and pulmonary arterial hypertension with aminorex, were initially not predicted by routine preclinical toxicology studies. To date, there are no validated animal models or preclinical and/or toxicologic screens to accurately predict anorexigen-induced valvulopathy and pulmonary arterial hypertension in humans. This review covers the current state of antiobesity drugs and their safety concerns, and highlights new therapeutic targets and scientific advances toward the development of appropriate animal models by using novel techniques that will aid in understanding pathogenesis and pathophysiology of anorexigen-related safety issues.
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Affiliation(s)
- C S Elangbam
- Department of Pathology, Safety Assessment, GlaxoSmithKline, Research Triangle Park, NC 27709, USA.
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Fulurija A, Lutz TA, Sladko K, Osto M, Wielinga PY, Bachmann MF, Saudan P. Vaccination against GIP for the treatment of obesity. PLoS One 2008; 3:e3163. [PMID: 18779862 PMCID: PMC2525840 DOI: 10.1371/journal.pone.0003163] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2007] [Accepted: 08/15/2008] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND According to the WHO, more than 1 billion people worldwide are overweight and at risk of developing chronic illnesses, including cardiovascular disease, type 2 diabetes, hypertension and stroke. Current therapies show limited efficacy and are often associated with unpleasant side-effect profiles, hence there is a medical need for new therapeutic interventions in the field of obesity. Gastric inhibitory peptide (GIP, also known as glucose-dependent insulinotropic polypeptide) has recently been postulated to link over-nutrition with obesity. In fact GIP receptor-deficient mice (GIPR(-/-)) were shown to be completely protected from diet-induced obesity. Thus, disrupting GIP signaling represents a promising novel therapeutic strategy for the treatment of obesity. METHODOLOGY/PRINCIPAL FINDINGS In order to block GIP signaling we chose an active vaccination approach using GIP peptides covalently attached to virus-like particles (VLP-GIP). Vaccination of mice with VLP-GIP induced high titers of specific antibodies and efficiently reduced body weight gain in animals fed a high fat diet. The reduction in body weight gain could be attributed to reduced accumulation of fat. Moreover, increased weight loss was observed in obese mice vaccinated with VLP-GIP. Importantly, despite the incretin action of GIP, VLP-GIP-treated mice did not show signs of glucose intolerance. CONCLUSIONS/SIGNIFICANCE This study shows that vaccination against GIP was safe and effective. Thus active vaccination may represent a novel, long-lasting treatment for obesity. However further preclinical safety/toxicology studies will be required before the therapeutic concept can be addressed in humans.
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Affiliation(s)
| | - Thomas A. Lutz
- Institute of Veterinary Physiology and Center of Integrative Human Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | | | - Melania Osto
- Institute of Veterinary Physiology and Center of Integrative Human Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Peter Y. Wielinga
- Institute of Veterinary Physiology and Center of Integrative Human Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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Florentin M, Liberopoulos EN, Elisaf MS. Sibutramine-associated adverse effects: a practical guide for its safe use. Obes Rev 2008; 9:378-87. [PMID: 18034790 DOI: 10.1111/j.1467-789x.2007.00425.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Obesity is a multifactorial chronic disorder which comprises a serious health problem nowadays. The effective management of obesity is difficult in contemporary societies where abundance of hypercaloric food and sedentary lifestyle is the rule. Apart from lifestyle interventions, which include diet, exercise and behavioural treatment, weight-loss medications can also be used for the management of obesity. Sibutramine, a selective monoamine reuptake inhibitor, is a drug with established efficacy in sustained weight reduction and an overall favourable safety profile. However, its action on the sympathetic nervous system has linked sibutramine to blood pressure and heart rate elevations. These potentially adverse effects as well as other sibutramine-associated side effects and their possible underlying mechanisms are reviewed in the present article. Compelling evidence from the majority of data in the literature shows that sibutramine can be effectively used in conjunction with caloric restriction and exercise in obese patients. Hypertension, if adequately treated and frequently monitored, is not an absolute contraindication for the prescription of sibutramine.
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Affiliation(s)
- M Florentin
- Department of Internal Medicine, Medical School, University of Ioannina, Ioannina, Greece
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Ballantyne CM. Increasing prevalence of obesity and clustered cardiometabolic risk: can treatment of the underlying cause reverse the trends? Crit Pathw Cardiol 2007; 6:41-5. [PMID: 17667863 DOI: 10.1097/hpc.0b013e318053d190] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Changing demographics in the United States indicate that obesity, metabolic syndrome, and diabetes are increasing in prevalence. Current interventions for the treatment of the metabolic syndrome to prevent cardiovascular disease are usually directed at individual risk factors instead of the root cause, which is commonly visceral adiposity. Existing pharmacologic therapies to treat obesity provide modest benefit on weight loss but are limited by their tolerability and by concerns about safety. More effective management of patients with metabolic syndrome to prevent diabetes and cardiovascular disease will require more effective therapies that target the underlying cause.
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Affiliation(s)
- Christie M Ballantyne
- Center for Cardiovascular Disease Prevention, Methodist DeBakey Heart Center, Section of Atherosclerosis and Vascular Medicine, Baylor College of Medicine, Houston, Texas 77030, USA.
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&NA;. Tailor treatment of type 2 diabetes mellitus in children and adolescents to the individual requirements of each patient. DRUGS & THERAPY PERSPECTIVES 2007. [DOI: 10.2165/00042310-200723090-00003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Affiliation(s)
- Michael Freemark
- Box 3080, Duke University Medical Center, Durham, NC 27710, USA.
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Gerich JE. Glycemic Control in the Metabolic Syndrome and Implications in Preventing Cardiovascular Disease. Metab Syndr Relat Disord 2006; 4:315-27. [DOI: 10.1089/met.2006.4.315] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Affiliation(s)
- John E. Gerich
- Department of Medicine, University of Rochester School of Medicine, Rochester, New York
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Gursoy A, Erdogan MF, Cin MO, Cesur M, Baskal N. Comparison of orlistat and sibutramine in an obesity management program: efficacy, compliance, and weight regain after noncompliance. Eat Weight Disord 2006; 11:e127-32. [PMID: 17272944 DOI: 10.1007/bf03327578] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
To describe the comparative efficacy of orlistat and sibutramine in an obesity management program, with specific attention to compliance and weight regains after noncompliance. We prospectively evaluated 182 obese patients who were randomized to treatment with orlistat (n=98) or sibutramine (n=84) along with the diet and exercise prescriptions. Compliance (or compliant patient) was defined as adherence to scheduled visit times (at 3- month intervals) and following the prescribed drug regimen. A telephone survey was conducted in case of noncompliance. Significant body weights improvements were seen in both treatment groups. Patients lost a mean of 7.6+/-2.8% and 10.5+/-2.9% of initial body weights after a mean drug use of 8.8+/-5.7 and 8.3+/-3.7 months in the orlistat and sibutramine groups, respectively (p<0.05 vs. initial body weight). Patients in the sibutramine group lost more weight than the orlistat group (p<0.05). A total of 102 patients (56%) were compliant (53.1% in the orlistat group and 59.5% in the sibutramine group). Factors associated with compliance included weight reduction of more than 5% in the first 3 months and adherence to physical activity. Higher initial body weight, prior anti-obesity therapy, number of concurrent medications, and comorbidity were associated with noncompliance. Weight regains in noncompliant patient were a mean of 5.2+/-5.1 kg after a mean period of 9.2+/-4.2 months in the orlistat group, and a mean of 6.1+/-3.8 kg after a mean period of 9.1+/-3.9 months in the sibutramine group (p<0.05 vs. last visit for both groups, p>0.05 between groups). Both drugs in an obesity management program can achieve substantial weight loss. However, noncompliance and rebound weight regain after noncompliance are considerable problems.
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Affiliation(s)
- A Gursoy
- Department of Endocrinology and Metabolic Diseases, Ankara University School of Medicine, Ankara, Turkey.
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Ogden J, Sidhu S. Adherence, behavior change, and visualization: a qualitative study of the experiences of taking an obesity medication. J Psychosom Res 2006; 61:545-52. [PMID: 17011364 DOI: 10.1016/j.jpsychores.2006.04.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2005] [Revised: 03/30/2006] [Accepted: 04/25/2006] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Our objective was to examine patients' experiences of taking orlistat as a means to explore adherence and behavior change. METHOD We performed qualitative interviews with 12 participants who had taken orlistat in the past 2 years. RESULTS Their experiences were described in terms of beliefs about the causes of their obesity, their motivations for taking orlistat, and highly visual side effects. These themes have implications for understanding adherence and behavior change. For some, the side effects led to nonadherence and absence of behavior change. These individuals seemed to be motivated by routine effects of being overweight, such as lowered self-esteem. In contrast, those who were motivated by a life crisis seemed to tolerate the side effects of the drug, leading to adherence. In turn, these highly visual side effects enabled them to make an explicit link between food consumed and weight, creating a shift in their beliefs about the causes of obesity and making behavior change more likely. CONCLUSION Orlistat use illustrates how treatment and illness beliefs interact to create both adherence and behavior change, particularly in the context of a life crisis and particularly when symptoms can be visualized.
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Affiliation(s)
- Jane Ogden
- Department of Psychology, University of Surrey, Guildford, Surrey GU1 7XH, United Kingdom.
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Ioannides-Demos LL, Proietto J, Tonkin AM, McNeil JJ. Safety of drug therapies used for weight loss and treatment of obesity. Drug Saf 2006; 29:277-302. [PMID: 16569079 DOI: 10.2165/00002018-200629040-00001] [Citation(s) in RCA: 98] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Some of the medications used for weight loss in the management of obesity have been associated with unacceptable morbidity and mortality. Safety concerns have led to the withdrawal of aminorex, followed by the fenfluramines in 1997, and phenylpropanolamine (norephedrine) in 2000. Aminorex was associated with an increased prevalence of primary pulmonary hypertension (PPH), fenfluramines with an increased prevalence of PPH and valvulopathy, and phenylpropanolamine with an increased risk of haemorrhagic stroke. Several studies have investigated the safety of the fenfluramines, yet the benefit-risk profile has not been conclusively quantified. This is due to several deficiencies in the published studies, including a lack of data on the baseline prevalences of comorbid conditions in obese subjects, and potential confounders and biases in the study designs. Although several studies and systematic reviews support an increased risk of PPH and valvulopathy in patients who have taken fenfluramines, without knowledge of the background prevalence it is not possible to determine if the exposure preceded the outcome. The population at higher risk of these adverse effects includes those taking higher doses or with a longer duration of exposure to fenfluramines and those with pre-existing cardiac disease or a genetic predisposition. Patients exposed to fenfluramines continue to be monitored, with some follow-up studies indicating no overall worsening in valvulopathy over time. There are limited efficacy and safety data for amfepramone (diethylpropion) and phentermine and their approval for the management of obesity is limited to short-term use. Orlistat and sibutramine are the only currently approved medications for long-term management of obesity. Although the benefit-risk profiles of sibutramine and orlistat appear positive, sibutramine continues to be monitored because of long-term safety concerns. The safety and efficacy of currently approved drug therapies have not been evaluated in children and elderly patient populations and there is limited information in adolescents, whilst the long-term safety of current and potential new drug therapies in adults will require several years of postmarketing surveillance to fully elucidate their adverse effect profiles.
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Affiliation(s)
- Lisa L Ioannides-Demos
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.
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Abstract
OBJECTIVE To review the commonly utilized pharmacological options for the treatment of overweight and obese patients in the United States. METHODS A MEDLINE and EMBASE search, in English, between January 1995 and November 2005 was conducted using the terms, "anti-obesity agents", "orlistat", "sibutramine", and "phentermine". References cited in relevant studies and reviews were also examined for additional clinical trials to be included in the review. RESULTS There are several pharmacological options currently available for the treatment of overweight and obese individuals in the United States, including phentermine, sibutramine, and orlistat, with only sibutramine and orlistat being indicated for use in the long term (> 6 months). However, none of these medications have proven to be more effective than another for the indication of weight loss, each with a very similar maximum weight loss potential. Therefore choosing a weight loss medication should be patient specific and based on its pharmacological profile, including mechanism of action and potential adverse effects. Most importantly, it is imperative to realize that these agents are only indicated for use when combined with lifestyle modifications. Most studies have indicated that maximum benefits from any of these medications are only shown when taken in addition to a hypocaloric diet. CONCLUSION It has been shown that the combination of lifestyle changes and pharmacological treatment leads to a greater decrease in total body weight loss. Treatment with anti-obesity agents is associated with side effects and an increased cost in health care. These factors must be weighed prior to initiating anti-obesity treatment.
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Affiliation(s)
- David M Schnee
- Pharmacy Practice, Massachusetts College of Pharmacy and Health Sciences, 179 Longwood Avenue, Boston, MA 02115, USA
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Abstract
Pharmacotherapy for the management of obesity is primarily aimed at weight loss, weight loss maintenance and risk reduction, and has included thyroid hormone, amphetamines, phentermine, amfepramone (diethylpropion), phenylpropanolamine, mazindol, fenfluramines and, more recently, sibutramine and orlistat. These agents decrease appetite, reduce absorption of fat or increase energy expenditure. Primary endpoints used to evaluate anti-obesity drugs most frequently include mean weight loss, percentage weight loss and proportion of patients losing >or=5% and >or=10% of initial bodyweight. Secondary endpoints may include reduction in body fat, risk factors for cardiovascular disease and the incidences of diseases such as diabetes mellitus. Most pharmacotherapies have demonstrated significantly greater weight loss in patients on active treatment than those receiving placebo in short-term (<or=1 year) randomised controlled trials of pharmacological treatment in conjunction with a calorie-controlled diet or lifestyle intervention. The evidence of long-term efficacy is limited to sibutramine (2 years) and orlistat (4 years). These are the only drugs currently approved for the long-term management of obesity in adults. Sibutramine recipients randomised following 6 months' treatment to either sibutramine or placebo demonstrated significantly better weight maintenance at 2 years than those taking placebo (p<0.001), with >or=10% loss of initial bodyweight in 46% of patients. For patients taking orlistat, weight loss was 2.2 kg greater than those on placebo at 4 years (p<0.001), with significantly more patients achieving >or=10% loss of initial bodyweight (26.2% and 15.6%, respectively; p<0.001). Other drugs that have been evaluated for weight loss include ephedrine, the antidepressants fluoxetine and bupropion, and the antiepileptics topiramate and zonisamide. Two clinical trials with fluoxetine both reported no significant difference in weight loss compared with placebo at 52 weeks. Clinical trials evaluating ephedrine, bupropion, topiramate and zonisamide have demonstrated significantly greater weight loss than placebo but have been limited to 16-26 weeks' treatment. A major obstacle to the evaluation of the clinical trials is the potential bias resulting from low study completion rates. Completion rates varied from 52.8% of phentermine recipients in a 9-month study, to 40% of fenfluramine recipients in a 24-week comparative study with phentermine and 18% of amfepramone recipients in a 24-week study. One-year completion rates range from 51% to 73% for sibutramine and from 66% to 85% for orlistat. Other potential sources of bias include run-in periods and subsequent patient selection based on compliance or initial weight loss. Several potential new therapies targeting weight loss and obesity through the CNS pathways or peripheral adiposity signals are in early phase clinical trials. Over the next decade the drug treatment of obesity is likely to change significantly because of the availability of new pharmacotherapies to regulate eating behaviours, nutrient partitioning and/or energy expenditure.
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Affiliation(s)
- Lisa L Ioannides-Demos
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia.
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Acharya NV, Wilton LV, Shakir SAW. Safety profile of orlistat: results of a prescription-event monitoring study. Int J Obes (Lond) 2006; 30:1645-52. [PMID: 16552401 DOI: 10.1038/sj.ijo.0803323] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
INTRODUCTION Orlistat, the first of a new class of drugs for the treatment of obesity, was launched in the UK in December 1998. The prescribing information recommends that treatment with orlistat should be discontinued after 12 weeks if the patient has not achieved a specified loss of weight. OBJECTIVE To monitor the safety of orlistat prescribed in the primary care setting in England using prescription-event monitoring (PEM). METHODS A postmarketing surveillance study using the observational cohort technique of PEM. Patients were identified from dispensed prescriptions issued by primary care physicians for orlistat between December 1998 and November 1999. The outcome data were event reports obtained by sending questionnaires (green forms) to the prescribing doctor at least 6 months after the first prescription for an individual patient. Incidence densities, expressed as number of first reports of an event/1000 patient-months of exposure, were calculated. Significant differences between incidence densities (IDs) for events reported in the 1st month (ID(1)) and months 2 and 3 (ID(2-3)) of exposure were regarded as potential signals. Reasons for stopping orlistat were analysed. Follow-up information was requested for selected events and used to assess the causal association with orlistat. RESULTS Green forms containing clinically useful information on 16 021 patients (median age 45 years (interquartile range 35-54); 80.1% females) were received. The events reported most frequently during the 1st month of treatment were 'not effective' (639; 4.0% of cohort), diarrhoea (371; 2.3%) and weight loss (230; 1.4%). Twelve clinical adverse events were identified for which ID(1) was significantly greater than ID(2-3). These included non-specific events (e.g. intolerance, malaise/lassitude, unspecified side effects), weight loss and vaginitis/vulvitis. The remaining events were gastrointestinal in nature and included diarrhoea, pain abdomen, flatulence, nausea/vomiting, rectal discharge, faecal incontinence and 'gastrointestinal unspecified' events. A similar pattern of predominately gastrointestinal events was seen for reasons for stopping and suspected adverse drug reactions. Review of selected events for causality revealed 45 events which were assessed as possibly or probably related to orlistat. CONCLUSIONS This study shows that orlistat is fairly well tolerated. The safety profile of orlistat was similar to the prescribing information and experience reported in the literature.
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Affiliation(s)
- N V Acharya
- Drug Safety Research Unit, Bursledon Hall, Blundell Lane, Southampton, UK
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Pinkston MM, Poston WSC, Reeves RS, Haddock CK, Taylor JE, Foreyt JP. Does metabolic syndrome mitigate weight loss in overweight Mexican American women treated for 1-year with orlistat and lifestyle modification? Eat Weight Disord 2006; 11:e35-41. [PMID: 16801738 DOI: 10.1007/bf03327751] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
AIMS To investigate the effects of a pharmacotherapy (orlistat) plus lifestyle management (OLM) intervention on weight loss in Mexican American women with and without metabolic syndrome (MS). METHODS One hundred and seven female participants aged 21-65 years and of Mexican origin were randomized to either OLM or a wait-list control group (WLC) for one year. The lifestyle interventions were tailored to exhibit features of the Mexican culture. Within each group, subjects with MS were compared to those without MS to assess whether its presence mitigates weight loss. Risk factors for MS also were assessed. RESULTS Participants with MS in the OLM group experienced significant decreases in weight and body mass index (BMI) as compared to participants without MS. Participants with MS in the OLM group and who completed the study lost 9.3+/-7.5 kg (20.5+/-16.5 lb) as compared to participants with MS in the WLC group, who only lost 0.2+/-3.1 kg (0.4+/-6.8 lb). Further, participants with MS in the OLM group who completed the study experienced a 3.1+/-3.9 kg/m2 decrease in BMI whereas participants with MS in the WLC group only experienced a 0.1+/-1.2 kg/m2 decrease in BMI. No changes in other MS risk factors were significant. CONCLUSIONS Patients with MS experienced significant weight loss and decreases in BMI as a result of a lifestyle and pharmacotherapy intervention.
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Affiliation(s)
- M M Pinkston
- Mid America Heart Institute and University of Missouri-Kansas City, Kansas City, MO 64110, USA.
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