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Wang W, Chen X, Chen J, Xu M, Liu Y, Yang S, Zhao W, Tan S. Engineering lentivirus envelope VSV-G for liver targeted delivery of IDOL-shRNA to ameliorate hypercholesterolemia and atherosclerosis. MOLECULAR THERAPY. NUCLEIC ACIDS 2024; 35:102115. [PMID: 38314097 PMCID: PMC10835450 DOI: 10.1016/j.omtn.2024.102115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 01/05/2024] [Indexed: 02/06/2024]
Abstract
Lentiviral vectors (LVs) have been widely used as a tool for gene therapies. However, tissue-selective transduction after systemic delivery remains a challenge. Inducible degrader of low-density lipoprotein receptor is an attractive target for treating hypercholesterolemia. Here, a liver-targeted LV, CS8-LV-shIDOL, is developed by incorporating a hepatocyte-targeted peptide derived from circumsporozoite protein (CSP) into the lentivirus envelope for liver-targeted delivery of IDOL-shRNA (short hairpin RNA) to alleviate hypercholesterolemia. Tail-vein injection of CS8-LV-shIDOL results in extremely high accumulation in liver and nearly undetectable levels in other organs in mice. In addition, it shows superior therapeutic efficacy in lowering serum low-density lipoprotein cholesterol (LDL-C) and reducing atherosclerotic lesions over unmodified LV-shIDOL in hyperlipidemic mice. Mechanically, the envelope-engineered CS8-LV-shIDOL can enter liver cells via low-density lipoprotein receptor-related protein (LRP). Thus, this study provides a novel approach for liver-targeted delivery of IDOL-shRNA to treat hypercholesterolemia by using an envelope-engineered LV, and this delivery system has great potential for liver-targeted transgene therapy.
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Affiliation(s)
- Wei Wang
- Department of Cell and Molecular Biology, School of Life Science and Technology, State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, China Pharmaceutical University, Nanjing 210009, China
| | - Xuemei Chen
- Department of Cell and Molecular Biology, School of Life Science and Technology, State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, China Pharmaceutical University, Nanjing 210009, China
| | - Jiali Chen
- Department of Cell and Molecular Biology, School of Life Science and Technology, State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, China Pharmaceutical University, Nanjing 210009, China
| | - Menglong Xu
- Department of Cell and Molecular Biology, School of Life Science and Technology, State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, China Pharmaceutical University, Nanjing 210009, China
| | - Ying Liu
- Department of Cell and Molecular Biology, School of Life Science and Technology, State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, China Pharmaceutical University, Nanjing 210009, China
| | - Shijie Yang
- Department of Cell and Molecular Biology, School of Life Science and Technology, State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, China Pharmaceutical University, Nanjing 210009, China
| | - Wenfeng Zhao
- Department of Cell and Molecular Biology, School of Life Science and Technology, State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, China Pharmaceutical University, Nanjing 210009, China
| | - Shuhua Tan
- Department of Cell and Molecular Biology, School of Life Science and Technology, State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, China Pharmaceutical University, Nanjing 210009, China
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Qian Y, Lu S, Meng J, Chen W, Li J. Thermo-Responsive Hydrogels Coupled with Photothermal Agents for Biomedical Applications. Macromol Biosci 2023; 23:e2300214. [PMID: 37526220 DOI: 10.1002/mabi.202300214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 07/04/2023] [Indexed: 08/02/2023]
Abstract
Intelligent hydrogels are materials with abilities to change their chemical nature or physical structure in response to external stimuli showing promising potential in multitudinous applications. Especially, photo-thermo coupled responsive hydrogels that are prepared by encapsulating photothermal agents into thermo-responsive hydrogel matrix exhibit more attractive advantages in biomedical applications owing to their spatiotemporal control and precise therapy. This work summarizes the latest progress of the photo-thermo coupled responsive hydrogel in biomedical applications. Three major elements of the photo-thermo coupled responsive hydrogel, i.e., thermo-responsive hydrogel matrix, photothermal agents, and construction methods are introduced. Furthermore, the recent developments of these hydrogels for biomedical applications are described with some selected examples. Finally, the challenges and future perspectives for photo-thermo coupled responsive hydrogels are outlined.
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Affiliation(s)
- Yafei Qian
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha, 410008, China
| | - Sha Lu
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha, 410008, China
| | - Jianqiang Meng
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha, 410008, China
| | - Wansong Chen
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha, 410008, China
| | - Juan Li
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha, 410008, China
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3
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Johnston TP, Edwards G, Koulen P. Synergism of mechanisms underlying early-stage changes in retina function in male hyperglycemic db/db mice in the absence and presence of chemically-induced dyslipidemia. Sci Rep 2023; 13:17347. [PMID: 37833428 PMCID: PMC10576038 DOI: 10.1038/s41598-023-44446-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 10/08/2023] [Indexed: 10/15/2023] Open
Abstract
The study was designed to quantify retina function in a spontaneous mutation mouse model of diabetes, in which sustained dyslipidemia was induced chemically. The goal of the study was to identify if dyslipidemia in the presence of hyperglycemia resulted in either a synergistic, or a merely additive, exacerbation of retinal and visual dysfunctions in diabetes. Two cohorts of mice, male C57BL/6 and C57BL/KsJ-db/db mice were divided into two groups each. One group of each strain received the triblock copolymer, poloxamer 407 (P-407), administered by intraperitoneal injection ("WT P-407" and "db/db P-407" groups) with saline as a control in the remaining two groups ("WT" and "db/db" groups). Blood glucose, total cholesterol (TC) and total triglyceride (TG) levels were quantified using enzyme-based colorimetric assays. Retina function was measured using electroretinography (ERG) and visual acuity was determined by behaviorally assessing parameters of the optomotor reflex. TC and TG levels were normal in both saline controls (WT) and db/db mice but were significantly elevated in the WT P-407 group (p < 0.01 for TC; p < 0.001 for TG), while levels of the same lipids were further elevated in the db/db P-407 group when compared to the WT P-407 group levels (p < 0.001 for both TC and TG). Behavioral assessment of the optomotor reflex indicated reduced visual acuity for the db/db P-407 group when compared to either the WT P-407 or the db/db groups (p < 0.001, p < 0.0001). ERG measurements of scotopic retina function showed a significant decline in the scotopic b-wave amplitude of the WT P-407 animals (p < 0.01) and a further reduction for the db/db P-407 group when compared to controls (p < 0.0001). Very significant, strong correlations between scotopic b-wave amplitude and implicit time to TC (r = - 0.8376, p = < 0.0001 and r = 0.7069, p = 0.0022, respectively) and TG levels (r = - 0.8554, p = < 0.0001 and r = 0.7150, p = 0.0019, respectively) were found. Dyslipidemia in the presence of hyperglycemia synergistically exacerbated the severity of retinal dysfunction in diabetes. P-407 administration significantly elevated plasma TC and TG levels in male wild-type (WT) and diabetic mice (db/db), but the resulting hyperlipidemia was more significantly pronounced in the diabetic mice. While elevated plasma lipid and blood glucose levels were individually correlated with a decline in retinal function, the combination of both exacerbated retinal dysfunction. This model of combined hyperglycemia and dyslipidemia can be used to dissect individual contributions of features of the metabolic syndrome to the pathogenesis of retinal dysfunction in diabetes.
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Affiliation(s)
- Thomas P Johnston
- Department of Ophthalmology, Vision Research Center, School of Medicine, University of Missouri-Kansas City, Kansas City, MO, 64108, USA
- Division of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Missouri - Kansas City, Kansas City, MO, 64108, USA
| | - Genea Edwards
- Department of Ophthalmology, Vision Research Center, School of Medicine, University of Missouri-Kansas City, Kansas City, MO, 64108, USA
| | - Peter Koulen
- Department of Ophthalmology, Vision Research Center, School of Medicine, University of Missouri-Kansas City, Kansas City, MO, 64108, USA.
- Department of Biomedical Sciences, School of Medicine, University of Missouri-Kansas City, Kansas City, MO, USA.
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Solanki A, Savla SR, Borkar MR, Bhatt LK. Sulfamethizole attenuates poloxamer 407-induced atherosclerotic neointima formation via inhibition of mTOR in C57BL/6 mice. J Biochem Mol Toxicol 2023; 37:e23322. [PMID: 36799065 DOI: 10.1002/jbt.23322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 12/04/2022] [Accepted: 02/08/2023] [Indexed: 02/18/2023]
Abstract
Mammalian target of Rapamycin C1 (mTORC1) inhibition limits plaque progression in atherosclerosis. The present study evaluated the protective effect of sulfamethizole on poloxamer 407-induced atherosclerotic neointima formation in C57BL/6 mice via mTOR inhibition. Poloxamer 407 (P-407) (0.5 g/kg body weight) was administered intraperitoneally to male C57BL/6 mice every third day for 148 days to induce chronic hyperlipidemia. From Day 121 to 148, animals were additionally administered Sulfamethizole (5, 10, and 50 mg/kg, p.o.), Rapamycin (0.5 mg/kg, positive control), or vehicle (1 ml/kg). Plasma lipid levels were measured on Days 120 and 148. Upon sacrifice, histological studies were performed, and aortic tissue interleukin (IL)-6, tumor necrosis factor-α (TNF-α), and mTOR levels were evaluated. A molecular docking study was carried out to mimic the interaction of sulfamethizole with mTOR protein. Chronic P-407 administration significantly (p < 0.001) elevated plasma lipid levels, compared with those of the normal control group. Chronic hyperlipidemia resulted in increased tunica intima thickness, collagen deposition, and IL-6, TNF-α, and mTOR levels. Treatment with Sulfamethizole attenuated these parameters significantly in a dose-dependent manner. Molecular docking studies showed a significant interaction of Sulfamethizole with mTOR. In conclusion, this study suggests that sulfamethizole significantly limits poloxamer 407-induced atherosclerotic neointima formation in C57BL/6 mice via mTOR inhibition.
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Affiliation(s)
- Ankita Solanki
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Shreya R Savla
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Maheshkumar R Borkar
- Department of Pharmaceutical Chemistry, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Lokesh K Bhatt
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
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5
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Bin Jardan YA, Ahad A, Raish M, Ahmad A, Alam MA, Al-Mohizea AM, Al-Jenoobi FI. Assessment of glibenclamide pharmacokinetics in poloxamer 407-induced hyperlipidemic rats. Saudi Pharm J 2021; 29:719-723. [PMID: 34400867 PMCID: PMC8347666 DOI: 10.1016/j.jsps.2021.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/11/2021] [Indexed: 11/19/2022] Open
Abstract
The aim of the present research was to describe the consequences of hyperlipidemia (HL) on the pharmacokinetics of glibenclamide (Gb) in poloxamer 407-induced hyperlipidemic rats. Rats were given intraperitoneal dose of poloxamer 407 to cause hyperlipidemia. A single oral dose of Gb (10 mg/Kg) was given to normal and HL rats. The Cmax and tmax after oral dose of Gb in normal rats were 340.10 µg/ml and 3.67 h, respectively. Whereas, the Cmax and tmax after oral dose of Gb in HL rats were noted as 773.39 µg/ml and 2.50 h respectively. The AUC value of Gb was found considerably higher in the HL rats. While the plasma clearance (CL) after oral dose of Gb was 2.53 ml/h and 1.39 ml/h in normal and HL rats respectively. The improved plasma concentration of Gb following oral dosing in rats with HL seems to be due to a direct influence on hepatic clearance or metabolizing enzymes. In conclusion, the Gb pharmacokinetics was considerably affected by the HL in rats. Such findings play an important role for predicting the alterations in the pharmacokinetics of drugs including GB, in cases having hyperlipidemia.
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Affiliation(s)
- Yousef A. Bin Jardan
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
- Corresponding author.
| | - Abdul Ahad
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mohammad Raish
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ajaz Ahmad
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mohd Aftab Alam
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Abdullah M. Al-Mohizea
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Fahad I. Al-Jenoobi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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6
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Carvalho GC, Araujo VHS, Fonseca-Santos B, de Araújo JTC, de Souza MPC, Duarte JL, Chorilli M. Highlights in poloxamer-based drug delivery systems as strategy at local application for vaginal infections. Int J Pharm 2021; 602:120635. [PMID: 33895295 DOI: 10.1016/j.ijpharm.2021.120635] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 01/02/2023]
Abstract
Infectious diseases related to the vagina include diseases caused by the imbalance of the vaginal flora and by sexually transmitted infections. Some of these present themselves as a public health problem due to the lack of efficient treatment that leads to their complete cure, and others due to the growing resistance to drugs used in therapy. In this sense, new treatment strategies are desirable, with vaginal administration rout being a great choice since can bypass first-pass metabolism and decrease drug interactions and adverse effects. However, it is worth highlighting limitations related to patient's discomfort at application time. Thereby, the use of poloxamer-based drug delivery systems is desirable due its stimuli-sensitive characteristic. Therefore, the present review reports a brief overview of poloxamer properties, biological behavior and advances in poloxamer applications in controlled drug release systems for infectious diseases related to the vagina treatment and prevention.
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Affiliation(s)
- Gabriela Corrêa Carvalho
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil
| | - Victor Hugo Sousa Araujo
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil
| | - Bruno Fonseca-Santos
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), 13083-871 Campinas, Brazil
| | | | | | - Jonatas Lobato Duarte
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil
| | - Marlus Chorilli
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil.
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7
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Jantsch MH, Bernardes VM, Oliveira JS, Passos DF, Dornelles GL, Manzoni AG, Cabral FL, da Silva JLG, Schetinger MRC, Leal DBR. Tucumã (Astrocaryum aculeatum) prevents memory loss and oxidative imbalance in the brain of rats with hyperlipidemia. J Food Biochem 2021; 45:e13636. [PMID: 33533491 DOI: 10.1111/jfbc.13636] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 12/21/2020] [Accepted: 01/14/2021] [Indexed: 01/10/2023]
Abstract
Hyperlipidemia generates deposition of lipids, inflammation, and oxidative damage in cells and tissues, including those of the brain. Tucumã (Astrocaryum aculeatum) fruits contain bioactive compounds with antioxidant and anti-inflammatory effects. We evaluated the action of Tucumã extract on memory and brain cortex redox balance in hyperlipidemic rats. For 30 days, Wistar rats received Tucumã extract (250 mg/kg). Then, hyperlipidemia was induced by intraperitoneal administration of Poloxamer-407. Twenty-four hours later, the object recognition index was measured. The animals were euthanized for sample collection 36 hr postinduction. Hyperlipidemic animals showed memory loss and an imbalance between reactive species and intrinsic antioxidants. We found that Tucumã prevented memory loss and protein and lipid oxidative damage and prompted a better antioxidant response in the cerebral cortex of rats with hyperlipidemia. These findings suggest a neuroprotective effect and nutraceutical potential of Tucumã. PRACTICAL APPLICATIONS: In the present work, we demonstrated that induced hyperlipidemia in rats caused memory loss and redox unbalance, both factors prevented by the administration of Tucumã (Astrocaryum aculeatum) extract. Two aims were fulfilled with these results. The first was to show that hyperlipidemia affected brain function through oxidative damage and concerned basic research. The second was to offer a therapy that prevented this harm and could be applied in the clinic. Tucumã has ethnopharmacological importance through the consumption of fruits or the administration of extracts and oils by a population that was shown to enjoy improved health and longevity. Here, we show evidence that Tucumã contributes to the maintenance of brain health by preventing memory loss and oxidative damage, a nutraceutical supplement that may aid the prevention of vascular, inflammatory, and brain diseases.
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Affiliation(s)
- Matheus Henrique Jantsch
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Viviane Martins Bernardes
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Juliana Sorraila Oliveira
- Programa de Pós-graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Daniela Ferreira Passos
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Guilherme Lopes Dornelles
- Programa de Pós-graduação em Medicina Veterinária, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Alessandra Guedes Manzoni
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Fernanda Licker Cabral
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-graduação em Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Jean Lucas Gutknecht da Silva
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Maria Rosa Chitolina Schetinger
- Programa de Pós-graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Daniela Bitencourt Rosa Leal
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-graduação em Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil
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8
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Eltellawy YA, El-Kayal M, Abdel-Rahman RF, Salah S, Shaker DS. Optimization of transdermal atorvastatin calcium - Loaded proniosomes: Restoring lipid profile and alleviating hepatotoxicity in poloxamer 407-induced hyperlipidemia. Int J Pharm 2020; 593:120163. [PMID: 33309831 DOI: 10.1016/j.ijpharm.2020.120163] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/28/2020] [Accepted: 12/05/2020] [Indexed: 01/22/2023]
Abstract
In an attempt to optimize the anti- hyperlipidemic effect and reduce statins induced hepatotoxicity, Atorvastatin Calcium (ATC) transdermal proniosomal gel (PNG) was developed. Different non-ionic surfactants (NISs) (Spans, Tweens, Cremophor RH 40 and Brij 52) were incorporated in the vesicle's lipid bilayer, in combination with lecithin. PNG formulae were characterized for encapsulation efficiency percent (% EE), vesicle size, polydispersity index (PDI) and zeta potential (ZP). Ex-vivo permeation study was performed using full thickness rat skin measuring drug flux and skin permeability coefficients. The pharmacodynamic performance of optimized transdermal ATC- PNG on both lipid profile and liver biomarkers was assessed and compared to oral ATC administration in poloxamer 407-induced hyperlipidemic rats. The liver tissues were subjected to histological examination as well. The results revealed nano-size range vesicles with relatively high ATC entrapment efficiency. Ex-vivo results demonstrated the permeation superiority of ATC proniosomes over free drug. Pharmacodynamic study revealed that transdermal administration of ATC- PNG succeeded in retaining the anti-hyperlipidemic efficacy of orally administered ATC without elevating liver biomarkers. The histological examination signified the role of optimized ATC-PNG in hindering statin- induced hepatocellular damage. The obtained results suggested a promising, easy-to-manufacture and effective ATC proniosomal gel for safe treatment of hyperlipidemia.
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Affiliation(s)
- Yasmin A Eltellawy
- Department of Pharmaceutics & Pharmaceutical Technology, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt (FUE), Cairo, Egypt.
| | - Maha El-Kayal
- Department of Pharmaceutics & Pharmaceutical Technology, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt (FUE), Cairo, Egypt
| | | | - Salwa Salah
- Department of Pharmaceutics & Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Dalia S Shaker
- Department of Pharmaceutics & Pharmaceutical Technology, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt (FUE), Cairo, Egypt.
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9
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Pyo YC, Tran P, Kim DH, Park JS. Chitosan-coated nanostructured lipid carriers of fenofibrate with enhanced oral bioavailability and efficacy. Colloids Surf B Biointerfaces 2020; 196:111331. [DOI: 10.1016/j.colsurfb.2020.111331] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 08/10/2020] [Accepted: 08/14/2020] [Indexed: 12/01/2022]
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10
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Das B, Chattopadhyay D, Rana D. The gamut of perspectives, challenges, and recent trends for in situ hydrogels: a smart ophthalmic drug delivery vehicle. Biomater Sci 2020; 8:4665-4691. [PMID: 32760957 DOI: 10.1039/d0bm00532k] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymers have a major role in the controlled delivery of pharmaceutical compounds to a targeted portion of the body. In this quest, a high priority research area is the targeted delivery of ophthalmic drugs to the interior regions of the eyes. Due to their complex anatomical/biochemical nature. This necessitates an advanced drug delivery cargo that could administer a therapeutic agent to the targeted location by evading various obstacles. The ongoing focus is to design an ophthalmic formulation by coupling it with a smart in situ forming polymeric hydrogel. These smart macromolecules have an array of unique theranostic properties and can utilize the in vivo biological parameters as a stimulus to change their macromolecular state from liquid to gel. The fast gelling hydrogel improves the corneal contact time, facilitates sustained drug release, resists the burst-out effect, and assists drug permeability to anterior regions. This review summarizes the rationale, scientific objectives, properties, and classification of the biologically important in situ hydrogels in the niche of ophthalmic drug delivery. The current trends and prospectives of the array of stimulus-responsive polymers, copolymers, and nanomaterials are discussed broadly. The crucial biointerfacial attributes with pros and cons are reviewed by investigating the effect of the nature of polymers as well as the ratio/percentage of additives and copolymers that influence the overall performance.
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Affiliation(s)
- Beauty Das
- Department of Polymer Science & Technology, University of Calcutta, 92 A.P.C. Road, Calcutta 700009, India.
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11
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Manzoni AG, Passos DF, Leitemperger JW, Storck TR, Doleski PH, Jantsch MH, Loro VL, Leal DBR. Hyperlipidemia-induced lipotoxicity and immune activation in rats are prevented by curcumin and rutin. Int Immunopharmacol 2020; 81:106217. [PMID: 32007794 DOI: 10.1016/j.intimp.2020.106217] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 12/20/2019] [Accepted: 01/14/2020] [Indexed: 12/27/2022]
Abstract
We assessed the effects of curcumin, rutin, and the association of rutin and curcumin in organs of hyperlipidemic rats. Rutin and curcumin have notable antioxidant and anti-inflammatory actions, so we hypothesized that their association would enhance their beneficial effects. Hyperlipidemia results in lipotoxicity and affects several organs. Lipotoxicity is not only an outcome of lipid accumulation in non-adipose tissues but also a result of the hyperlipidemia-associated inflammation and oxidative stress. Wistar rats were treated with rutin and curcumin for 30 days before the induction of acute hyperlipidemia by Poloxamer-407. After 36 h, the animals were euthanized for collection of blood and organs. Untreated hyperlipidemic rats showed higher uric acid and albumin levels in the serum and increased spleen size and ADA activity. Rutin, curcumin and the association reduced the spleen size by 20% and ADA activity by 23, 28, and 27%, respectively. Rats pretreated with rutin showed reduced lipid damage in the liver (40%) and the kidney (44%), and the protein damage was also reduced in the liver (75%). The lipid damage was decreased by 40% in the liver, and 56% in the kidney of rats pretreated with curcumin. The association reduced lipid damage by 50% and 36%, and protein damage by 77% and 64% in the liver and kidney, respectively. Rutin better prevented the decrease in the antioxidant defenses, increasing SOD by 34%, CAT by 246% and GST by 84% in the liver, as well as SOD by 119% and GST by 190% in the kidney. Also, analyses of blood and spleen parameters of untreated and pretreated non-hyperlipidemic rats showed no signs of immunotoxicity. Despite showing protective effects, the association did not perform better than the isolated compounds. Here, we showed that rutin and/or curcumin reestablished the immune homeostasis and redox balance disrupted by hyperlipidemia in peripheral organs of rats.
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Affiliation(s)
- Alessandra G Manzoni
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil; Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Daniela F Passos
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil; Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Jossiele W Leitemperger
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil; Laboratório de Toxicologia Aquática, Departamento de Bioquimica e Biologia Molecular, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Tamiris R Storck
- Laboratório de Toxicologia Aquática, Departamento de Bioquimica e Biologia Molecular, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Pedro H Doleski
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil; Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Matheus H Jantsch
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Vania L Loro
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil; Laboratório de Toxicologia Aquática, Departamento de Bioquimica e Biologia Molecular, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Daniela B R Leal
- Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil; Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
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12
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Momtazi-Borojeni AA, Jaafari MR, Badiee A, Banach M, Sahebkar A. Therapeutic effect of nanoliposomal PCSK9 vaccine in a mouse model of atherosclerosis. BMC Med 2019; 17:223. [PMID: 31818299 PMCID: PMC6902459 DOI: 10.1186/s12916-019-1457-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 10/29/2019] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Proprotein convertase subtilisin/kexin 9 (PCSK9) is an important regulator of low-density lipoprotein receptor (LDLR) and plasma levels of LDL cholesterol (LDL-C). PCSK9 inhibition is an efficient therapeutic approach for the treatment of dyslipidemia. We tested the therapeutic effect of a PCSK9 vaccine on dyslipidemia and atherosclerosis. METHODS Lipid film hydration method was used to prepare negatively charged nanoliposomes as a vaccine delivery system. An immunogenic peptide called immunogenic fused PCSK9-tetanus (IFPT) was incorporated on the surface of nanoliposomes using DSPE-PEG-maleimide lipid (L-IFPT) and adsorbed to Alhydrogel® (L-IFPTA+). The prepared vaccine formulation (L-IFPTA+) and empty liposomes (negative control) were inoculated four times with bi-weekly intervals in C57BL/6 mice on the background of a severe atherogenic diet and poloxamer 407 (thrice weekly) injection. Antibody titers were evaluated 2 weeks after each vaccination and at the end of the study in vaccinated mice. Effects of anti-PCSK9 vaccination on plasma concentrations of PCSK9 and its interaction with LDLR were determined using ELISA. To evaluate the inflammatory response, interferon-gamma (IFN-γ)- and interleukin (IL)-10-producing splenic cells were assayed using ELISpot analysis. RESULTS L-IFPTA+ vaccine induced a high IgG antibody response against PCSK9 peptide in the vaccinated hypercholesterolemic mice. L-IFPTA+-induced antibodies specifically targeted PCSK9 and decreased its plasma consecration by up to 58.5% (- 164.7 ± 9.6 ng/mL, p = 0.0001) compared with the control. PCSK9-LDLR binding assay showed that generated antibodies could inhibit PCSK9-LDLR interaction. The L-IFPTA+ vaccine reduced total cholesterol, LDL-C, and VLDL-C by up to 44.7%, 51.7%, and 19.2%, respectively, after the fourth vaccination booster, compared with the control group at week 8. Long-term studies of vaccinated hypercholesterolemic mice revealed that the L-IFPTA+ vaccine was able to induce a long-lasting humoral immune response against PCSK9 peptide, which was paralleled by a significant decrease of LDL-C by up to 42% over 16 weeks post-prime immunization compared to control. Splenocytes isolated from the vaccinated group showed increased IL-10-producing cells and decreased IFN-γ-producing cells when compared with control and naive mice, suggesting the immune safety of the vaccine. CONCLUSIONS L-IFPTA+ vaccine could generate long-lasting, functional, and safe PCSK9-specific antibodies in C57BL/6 mice with severe atherosclerosis, which was accompanied by long-term therapeutic effect against hypercholesterolemia and atherosclerosis.
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Affiliation(s)
- Amir Abbas Momtazi-Borojeni
- Nanotechnology Research Center, Bu-Ali Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Biotechnology, Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Reza Jaafari
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran. .,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran. .,Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Ali Badiee
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maciej Banach
- Department of Hypertension, WAM University Hospital in Lodz, Medical University of Lodz, Zeromskiego 113, Lodz, Poland.,Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran. .,Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. .,School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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13
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Aqueous extract of Houttuynia cordata ameliorates aortic endothelial injury during hyperlipidemia via FoxO1 and p38 MAPK pathway. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.103510] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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14
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Ruchel JB, Bernardes VM, Braun JBS, Manzoni AG, Passos DF, Castilhos LG, Abdalla FH, de Oliveira JS, de Andrade CM, Casali EA, da Cruz IBM, Leal DBR. Lipotoxicity-associated inflammation is prevented by guarana ( Paullinia cupana) in a model of hyperlipidemia. Drug Chem Toxicol 2019; 44:524-532. [PMID: 31195840 DOI: 10.1080/01480545.2019.1624767] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Hyperlipidemia causes lipotoxicity which prompts an inflammatory response linked to the development of cardiovascular diseases. Natural compounds have been receiving special attention for its potential to treat diseases, inexpensiveness, and safety. Guarana (Paullinia cupana) has demonstrated notable anti-inflammatory and antioxidant effects, which may prevent chronic diseases caused by changes in lipid profile. Thus, this study aims to evaluate the effect of guarana powder (Paullinia cupana) in the purine metabolism and inflammatory profile in lymphocytes and serum of rats with Poloxamer-407-induced hyperlipidemia. Pretreatment with guarana 12.5, 25, and 50 mg/kg/day or caffeine (0.2 mg/kg/day) by gavage was applied to adult male Wistar rats for a period of 30 days. As a comparative standard, we used simvastatin (0.04 mg/kg) post-induction. Hyperlipidemia was acutely induced with intraperitoneally injection of Poloxamer-407 (500 mg/kg). Guarana powder and caffeine increased the activity of the E-NTPDase (ecto-apyrase), and all pretreatments decreased the E-ADA (ecto-adenosine deaminase) activity, reducing the inflammatory process caused by lipotoxicity. In hyperlipidemic rats, ATP levels were increased while adenosine levels were decreased, guarana and caffeine reverted these changes. Guarana powder, caffeine, and simvastatin also prevented the increase in INF-γ and potentiated the increase in IL-4 levels, promoting an anti-inflammatory profile. Guarana promoted a more robust effect than caffeine. Our results show that guarana powder and caffeine have an anti-inflammatory as seen by the shift from a proinflammatory to an anti-inflammatory profile. The effects of guarana were more pronounced, suggesting that guarana powder may be used as a complementary therapy to improve the lipotoxicity-associated inflammation.
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Affiliation(s)
- Jader B Ruchel
- Departamento de Microbiologia e Parasitologia, Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Viviane M Bernardes
- Departamento de Microbiologia e Parasitologia, Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Josiane B S Braun
- Departamento de Microbiologia e Parasitologia, Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Alessandra G Manzoni
- Departamento de Microbiologia e Parasitologia, Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Daniela F Passos
- Departamento de Microbiologia e Parasitologia, Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Lívia G Castilhos
- Departamento de Microbiologia e Parasitologia, Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Fátima H Abdalla
- Departamento de Microbiologia e Parasitologia, Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Juliana S de Oliveira
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Cinthia M de Andrade
- Departamento de Clínica de Pequenos Animais, Laboratório de Patologia Clínica Veterinária, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Emerson A Casali
- Departamento de Ciências Morfológicas, Laboratório de Estudos Sobre as Alterações Celulares e Teciduais, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Ivana B M da Cruz
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Daniela B R Leal
- Departamento de Microbiologia e Parasitologia, Laboratório de Imunobiologia Experimental e Aplicada (LABIBIO), Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, Brazil.,Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
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15
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Rutin and curcumin reduce inflammation, triglyceride levels and ADA activity in serum and immune cells in a model of hyperlipidemia. Blood Cells Mol Dis 2019; 76:13-21. [DOI: 10.1016/j.bcmd.2018.12.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 12/25/2018] [Indexed: 12/11/2022]
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16
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Mechanisms Underlying Early-Stage Changes in Visual Performance and Retina Function After Experimental Induction of Sustained Dyslipidemia. Neurochem Res 2018; 43:1500-1510. [PMID: 29860619 DOI: 10.1007/s11064-018-2563-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 05/21/2018] [Accepted: 05/26/2018] [Indexed: 12/12/2022]
Abstract
Visual and retinal function was measured in a mouse model of chemically induced, sustained dyslipidemia to determine the contribution of dyslipidemia to the pathogenesis of retinopathy in the context of metabolic syndrome. Fifteen male C57BL/6Crl mice were divided into three groups. Poloxamer 407 (P-407), 14.5% w/w was delivered at a rate of 6 µl/day by implanted osmotic mini-pumps either subcutaneously (P-407 SQ) or intraperitoneally (P-407 IP) to P-407-treated mice, whereas saline was administered at the same rate to control mice using only the subcutaneous route of administration. Total cholesterol (TC) and true triglyceride (TG) levels were quantified from plasma. Optomotor responses to stimuli of varying spatial frequency or contrast were used to measure visual acuity and contrast sensitivity. Retinal function was determined using Ganzfeld flash electroretinography (ERG). At 32 days, TC for the P-407 IP group was significantly elevated compared to saline controls (169.4 ± 16.5 mg/dl, 0.001 < P < 0.01). TG levels for both the P-407 SQ (59.3 ± 22.4 mg/dl, 0.01 < P < 0.05) and P-407 IP groups (67.7 ± 18.0 mg/dl, 0.001 < P < 0.01) were significantly elevated relative to controls. Electroretinography demonstrated a very significant decline in the b/a ratio (1.80 ± 0.11, P < 0.01) for the P-407 IP group. The b/a ratio exhibited a moderate, significant correlation with TC levels (r = - 0.4425, P = 0.0392) and a strong, very significant correlation with TG levels (r = - 0.6190, P = 0.0021). Delivery of P-407 via osmotic mini-pump resulted in the sustained, significant elevation of plasma TC and TG levels. This elevation in plasma lipid levels was correlated with a decline in inner retinal function.
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17
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Electroacupuncture ameliorates poloxamer 407-induced hyperlipidemia through suppressing hepatic SREBP-2 expression in rats. Life Sci 2018; 203:20-26. [DOI: 10.1016/j.lfs.2018.04.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/05/2018] [Accepted: 04/12/2018] [Indexed: 01/07/2023]
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18
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Jin X, Wang Q, Yang X, Guo M, Li W, Shi J, Adu-Frimpong M, Xu X, Deng W, Yu J. Chemical characterisation and hypolipidaemic effects of two purified Pleurotus eryngii
polysaccharides. Int J Food Sci Technol 2018. [DOI: 10.1111/ijfs.13821] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xing Jin
- Department of Pharmaceutics; School of Pharmacy; Center for Nano Drug/Gene Delivery and Tissue Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Qilong Wang
- Department of Pharmaceutics; School of Pharmacy; Center for Nano Drug/Gene Delivery and Tissue Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Xia Yang
- Department of Pharmaceutics; School of Pharmacy; Center for Nano Drug/Gene Delivery and Tissue Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Min Guo
- Department of Pharmaceutics; School of Pharmacy; Center for Nano Drug/Gene Delivery and Tissue Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Wenjing Li
- Department of Pharmaceutics; School of Pharmacy; Center for Nano Drug/Gene Delivery and Tissue Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Jixiang Shi
- Department of Pharmaceutics; School of Pharmacy; Center for Nano Drug/Gene Delivery and Tissue Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Michael Adu-Frimpong
- Department of Pharmaceutics; School of Pharmacy; Center for Nano Drug/Gene Delivery and Tissue Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Ximing Xu
- Department of Pharmaceutics; School of Pharmacy; Center for Nano Drug/Gene Delivery and Tissue Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Wenwen Deng
- Department of Pharmaceutics; School of Pharmacy; Center for Nano Drug/Gene Delivery and Tissue Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Jiangnan Yu
- Department of Pharmaceutics; School of Pharmacy; Center for Nano Drug/Gene Delivery and Tissue Engineering; Jiangsu University; Zhenjiang 212013 China
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19
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Lee U, Kwon MH, Kang HE. Pharmacokinetic alterations in poloxamer 407-induced hyperlipidemic rats. Xenobiotica 2018; 49:611-625. [PMID: 29658375 DOI: 10.1080/00498254.2018.1466212] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
1. Plasma lipid profile abnormalities in hyperlipidemia can potentially alter the pharmacokinetics of a drug in a complex manner. To evaluate these pharmacokinetic alterations in hyperlipidemia and to determine the underlying mechanism(s), poloxamer 407-induced hyperlipidemic rats (HL rats), a well-established animal model of hyperlipidemia have been used. 2. In this review, we summarize findings on the pathophysiological and gene expression changes in drug-metabolizing enzymes and transporters in HL rats. We discuss pharmacokinetic changes in drugs metabolized primarily via hepatic cytochrome P450 (CYPs) in terms of alterations in hepatic intrinsic clearance (CL'int), free fraction in plasma (fu) and hepatic blood flow rate (QH), depending on the hepatic excretion ratio, as well as drugs eliminated primarily by mechanisms other than hepatic CYPs. 3. For lipoprotein-bound drugs, increased binding to lipoproteins resulted in lower fu values and volumes of distribution, with some exceptions. Generally, slower non-renal clearance (or total body clearance) of drugs that are substrates of hepatic CYP3A and CYP2C is well explained by the following factors: alterations in CL'int (due to down-regulation of hepatic CYPs), decreased fu and/or possible decreased QH. 4. These consistent findings across studies in HL rats suggest more studies are needed at the clinical level for optimal pharmacotherapies for hyperlipidemia.
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Affiliation(s)
- Unji Lee
- a Department of Pharmacy , Ewha Womans University Medical Center , Seoul , South Korea
| | - Mi Hye Kwon
- b College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences , The Catholic University of Korea , Bucheon , South Korea
| | - Hee Eun Kang
- b College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences , The Catholic University of Korea , Bucheon , South Korea
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20
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Zuberu J, Saleh MIA, Alhassan AW, Adamu BY, Aliyu M, Iliya BT. Hepatoprotective Effect of Camel Milk on Poloxamer 407 Induced Hyperlipidaemic Wistar Rats. Open Access Maced J Med Sci 2017; 5:852-858. [PMID: 29362609 PMCID: PMC5771285 DOI: 10.3889/oamjms.2017.158] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 09/08/2017] [Accepted: 10/24/2017] [Indexed: 01/21/2023] Open
Abstract
AIM: To investigate the effect of oral administration of camel milk on liver enzymes, total proteins and histology of poloxamer 407 induced hyperlipidaemic wistar rats. MATERIAL AND METHODS: Thirty male wistar rats weighing between 150-200 g were randomly assigned into six groups of five each; group I: administered distilled water, group II: induced with P407, group III: induced with P407 and treated with atorvastatin (20 mg/kg) and groups IV, V and VI: induced with P407 and treated with camel milk 250 mg/kg, 500 mg/kg and 1000 mg/kg respectively. After three weeks, blood samples and liver tissues were collected for the determination of alkaline phospatase (ALP), alanine aminotransferase (ALT), aspartate aminotransferase (AST), total protein, albumin, globulin, albumin/globulin ratio and histological studies respectively. RESULTS: All camel milk treated groups showed significant (p < 0.05) decrease in ALT and AST. Camel milk treated groups; 250 mg/kg and 1000mg/kg showed significant (p < 0.05) decrease in total protein, globulin with all camel milk treated groups having significant (p < 0.05) increase in A/G ratio. Histological examination of liver tissues showed that camel milk at a dose of 250 mg/kg had slight adipocytes infiltration. CONCLUSION: The results of our findings highlight the hepatoprotective effect of camel milk in poloxamer 407 induced hyperlipidaemic wistar rats.
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Affiliation(s)
- Jibril Zuberu
- Department of Human Physiology, Faculty of Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Malajiya I A Saleh
- Department of Human Physiology, Faculty of Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Abdul Wahab Alhassan
- Department of Human Physiology, Faculty of Basic Medical Sciences, Bauchi State University, Gadau, Nigeria
| | - Bello Y Adamu
- Department of Human Physiology, Faculty of Basic Medical Sciences, Bauchi State University, Gadau, Nigeria
| | - Munira Aliyu
- Department of Human Physiology, Faculty of Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Bilkisu T Iliya
- Department of Human Physiology, Faculty of Medicine, Ahmadu Bello University, Zaria, Nigeria
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21
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Braun JBS, Ruchel JB, Manzoni AG, Abdalla FH, Casalli EA, Castilhos LG, Passos DF, Leal DBR. Pretreatment with quercetin prevents changes in lymphocytes E-NTPDase/E-ADA activities and cytokines secretion in hyperlipidemic rats. Mol Cell Biochem 2017; 444:63-75. [PMID: 29188537 DOI: 10.1007/s11010-017-3231-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/24/2017] [Indexed: 12/20/2022]
Abstract
Hyperlipidemia (HL) is a condition associated with endothelial dysfunction and inflammatory disorders. Purinergic system ectoenzymes play an important role in modulating the inflammatory and immune response. This study investigated whether the preventive treatment with quercetin is able to prevent changes caused by hyperlipidemia in the purinergic system, through the activities of E-NTPDase and E-ADA in lymphocytes, and quantify the nucleotides and nucleoside, and the secretion of anti- and proinflammatory cytokines. Animals were divided into saline/control, saline/quercetin 5 mg/kg, saline/quercetin 25 mg/kg, saline/quercetin 50 mg/kg, saline/simvastatin (0.04 mg/kg), hyperlipidemia, hyperlipidemia/quercetin 5 mg/kg, hyperlipidemia/quercetin 25 mg/kg, hyperlipidemia/quercetin 50 mg/kg, and hyperlipidemia/simvastatin. Animals were pretreated with quercetin for 30 days and hyperlipidemia was subsequently induced by intraperitoneal administration of 500 mg/kg of poloxamer-407. Simvastatin was administered after the induction of hyperlipidemia. Lymphocytes were isolated and E-NTPDase and E-ADA activities were determined. Serum was separated for the cytokines and nucleotide/nucleoside quantification. E-NTPDase and E-ADA activities were increased in lymphocytes from hyperlipidemic rats and pretreatment with quercetin was able to prevent the increase in the activities of these enzymes caused by hyperlipidemia. Hyperlipidemic rats when receiving pretreatment with quercetin and treatment with simvastatin showed decreased levels of ATP and ADP when compared to the untreated hyperlipidemic group. The IFN-γ and IL-4 cytokines were increased in the hyperlipidemic group when compared with control group, and decreased when hyperlipidemic rats received the pretreatment with quercetin. However, pretreatment with quercetin was able to prevent the alterations caused by hyperlipidemia probably by regulating the inflammatory process. We can suggest that the quercetin is a promising compound to be used as an adjuvant in the treatment of hyperlipidemia.
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Affiliation(s)
- Josiane B S Braun
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil. .,Laboratório de Imunobiologia Experimental e Aplicada, Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 1000, prédio 20, Santa Maria, RS, 97105-900, Brazil.
| | - Jader B Ruchel
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil.,Laboratório de Imunobiologia Experimental e Aplicada, Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 1000, prédio 20, Santa Maria, RS, 97105-900, Brazil
| | - Alessandra G Manzoni
- Laboratório de Imunobiologia Experimental e Aplicada, Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 1000, prédio 20, Santa Maria, RS, 97105-900, Brazil
| | - Fátima H Abdalla
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Emerson A Casalli
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Lívia G Castilhos
- Programa de Pós Graduação em Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Daniela F Passos
- Laboratório de Imunobiologia Experimental e Aplicada, Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 1000, prédio 20, Santa Maria, RS, 97105-900, Brazil.
| | - Daniela B R Leal
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil.,Laboratório de Imunobiologia Experimental e Aplicada, Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 1000, prédio 20, Santa Maria, RS, 97105-900, Brazil.,Programa de Pós Graduação em Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
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22
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P-407-induced Mouse Model of Dose-controlled Hyperlipidemia and Atherosclerosis: 25 Years Later. J Cardiovasc Pharmacol 2017; 70:339-352. [DOI: 10.1097/fjc.0000000000000522] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Park J, Sun B, Yeo Y. Albumin-coated nanocrystals for carrier-free delivery of paclitaxel. J Control Release 2017; 263:90-101. [PMID: 28049022 PMCID: PMC5494017 DOI: 10.1016/j.jconrel.2016.12.040] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 12/30/2016] [Indexed: 01/22/2023]
Abstract
Nanoparticles are used to deliver anticancer drugs to solid tumors. However, clinical development of nanoparticles is challenging because of their limitations in physicochemical properties, such as low drug loading efficiency and poor circulation stability. Low drug loading not only causes technical difficulty in administration but also increases the amount of co-delivered carrier materials, imposing biological burdens to patients. Poor circulation stability causes loss of pharmacokinetics benefits of nanoparticles. To overcome these challenges, we developed an albumin-coated nanocrystal (NC) formulation of paclitaxel (PTX) with 90% drug loading and high serum stability. The NC was produced by inducing crystallization of PTX in aqueous medium, coating the surface with albumin, and removing extra non-drug ingredients. Among three types of NC produced with different crystallization conditions, NC crystallized in the medium containing Pluronic F-127 then coated with albumin ("Cim-F-alb") had the smallest size and the most native albumin, thus showing the most favorable cell interaction profiles (low uptake by J774A.1 macrophages and high uptake by SPARC+ B16F10 melanoma cells). Cim-F-alb remained more stable in undiluted serum than Abraxane, a commercial albumin-based PTX nanoparticle formulation, while maintaining comparable cytotoxicity to those of Abraxane and solvent-dissolved PTX. In a mouse model of B16F10 melanoma, Cim-F-alb showed higher antitumor efficacy than Abraxane at the same dose. This study demonstrates the feasibility and benefits of delivering an anticancer drug using a carrier-free nanoparticle formulation with good circulation stability.
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Affiliation(s)
- Joonyoung Park
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette 47907, USA
| | - Bo Sun
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette 47907, USA
| | - Yoon Yeo
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette 47907, USA; Weldon School of Biomedical Engineering, Purdue University, West Lafayette 47907, USA.
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24
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Suárez-García S, Caimari A, Del Bas JM, Suárez M, Arola L. Serum lysophospholipid levels are altered in dyslipidemic hamsters. Sci Rep 2017; 7:10431. [PMID: 28874705 PMCID: PMC5585394 DOI: 10.1038/s41598-017-10651-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 08/10/2017] [Indexed: 12/12/2022] Open
Abstract
Dyslipidemias are common disorders that predispose individuals to severe diseases. It is known that healthy living habits can prevent dyslipidemias if they are diagnosed properly. Therefore, biomarkers that assist in diagnosis are essential. The aim of this study was to identify biomarkers of dyslipidemia progression, which in turn disclose its etiology. These findings will pave the way for examinations of the regulatory mechanisms involved in dyslipidemias. Hamsters were fed either a normal-fat diet (NFD) or a high-fat diet. Some of the NFD-fed animals were further treated with the hyperlipidemic agent Poloxamer 407. Non-targeted metabolomics was used to investigate progressive changes in unknown serum metabolites. The hepatic expression of putative biomarker-related genes was also analyzed. The serum levels of lysophospholipids (Lyso-PLs) and their related enzymes lecithin-cholesterol acyltransferase (LCAT), secreted phospholipase A2 (sPLA2) and paraoxonase-1 were altered in dyslipidemic hamsters. Lysophosphatidylcholine levels were increased in diet-induced dyslipidemic groups, whereas lysophosphatidylethanolamine levels increased in response to the chemical treatment. The liver was significantly involved in regulating the levels of these molecules, based on the modified expression of endothelial lipase (Lipg), sPLA2 (Pla2g2a) and acyltransferases (Lcat and Lpcat3). We concluded that Lyso-PL evaluation could aid in the comprehensive diagnosis and management of lipid disorders.
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Affiliation(s)
- Susana Suárez-García
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Universitat Rovira i Virgili (URV), Tarragona, 43007, Spain
| | - Antoni Caimari
- Technological Unit of Nutrition and Health. EURECAT-Technological Center of Catalonia, Reus, 43204, Spain
| | - Josep Maria Del Bas
- Technological Unit of Nutrition and Health. EURECAT-Technological Center of Catalonia, Reus, 43204, Spain
| | - Manuel Suárez
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Universitat Rovira i Virgili (URV), Tarragona, 43007, Spain.
| | - Lluís Arola
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Universitat Rovira i Virgili (URV), Tarragona, 43007, Spain
- Technological Unit of Nutrition and Health. EURECAT-Technological Center of Catalonia, Reus, 43204, Spain
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25
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Evaluation of buprenorphine hydrochloride Pluronic(®) gel formulation in male C57BL/6NCrl mice. Lab Anim (NY) 2017; 45:370-9. [PMID: 27654688 DOI: 10.1038/laban.1106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 08/11/2016] [Indexed: 11/08/2022]
Abstract
Providing adequate analgesia while minimizing handling and stress post-surgery can be challenging. Recently, there have been commercial products made available for providing long acting analgesia in rodents. However, we find there are limitations for use in mice due to the viscosity of the product and the small dosing volumes needed. This project evaluated an in-house compounded formulation of buprenorphine easily made in the laboratory using pharmaceutical grade products. The release of buprenorphine was evaluated when compounded with two types of hydrogels (Pluronic(®) F-127 and F-68). Mice given buprenorphine in hydrogel (BP) demonstrated higher serum levels of buprenorphine for a longer period of time compared to mice given standard buprenorphine (Bup). However, the rate of decline in serum levels between the groups was similar; thus, it is more likely that the higher buprenorphine concentration seen in the BP group is due to the higher dose of buprenorphine given, rather than a slower release of product. Feed consumption was decreased in both groups one day after dosing; however, there was no difference in body weights. Increased activity in the open field was observed with both buprenorphine formulations, and lipemia was observed in mice given BP which persisted to at least 96 h. Based on our results, we conclude that this formulation did not sustain the release of buprenorphine or eliminate the increased activity commonly seen in mice given buprenorphine. In addition, the lipemia may confound research parameters, especially in cardiac studies and lipid metabolism studies. Therefore, we cannot recommend this formulation for use.
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26
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Braun JBS, Ruchel JB, Adefegha SA, Coelho APV, Trelles KB, Signor C, Rubin MA, Oliveira JS, Dornelles GL, de Andrade CM, Castilhos LG, Leal DBR. Neuroprotective effects of pretreatment with quercetin as assessed by acetylcholinesterase assay and behavioral testing in poloxamer-407 induced hyperlipidemic rats. Biomed Pharmacother 2017; 88:1054-1063. [PMID: 28192878 DOI: 10.1016/j.biopha.2017.01.134] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 01/22/2017] [Accepted: 01/23/2017] [Indexed: 10/20/2022] Open
Abstract
Hyperlipidemia is a group of disorders characterized by excessive lipids in the bloodstream. It is associated with the incidence of cardiovascular diseases and recognized as the most important factor underlying the occurrence of atherosclerosis. This study was conducted to investigate whether pretreatment with quercetin can protect against possible memory impairment and deterioration of the cholinergic system in hyperlipidemic rats. Animals were divided into ten groups (n=7): saline/control, saline/quercetin 5mg/kg, saline/quercetin 25mg/kg, saline/quercetin 50mg/kg, saline/simvastatin (0.04mg/kg), hyperlipidemia, hyperlipidemia/quercetin 5mg/kg, hyperlipidemia/quercetin 25mg/kg, hyperlipidemia/quercetin 50mg/kg and hyperlipidemia/simvastatin. The animals were pretreated with quercetin by oral gavage for a period of 30days and hyperlipidemia was subsequently induced by intraperitoneal administration of a single dose of 500mg/kg of poloxamer-407. Simvastatin was administered after the induction of hyperlipidemia. The results demonstrated that hyperlipidemic rats had memory impairment compared with the saline control group (P<0.001). However, pretreatment with quercetin and simvastatin treatment attenuated the damage caused by hyperlipidemia compared with the hyperlipidemic group (P<0.05). Acetylcholinesterase (AChE) activity in the cerebral hippocampus was significantly (P<0.001) reduced in the hyperlipidemic group compared with the control saline group. Pretreatment with quercetin and simvastatin treatment in the hyperlipidemic groups significantly (P<0.05) increased AChE activity compared with the hyperlipidemic group. Our results thus suggest that quercetin may prevent memory impairment, alter lipid metabolism, and modulate AChE activity in an experimental model of hyperlipidemia.
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Affiliation(s)
- Josiane B S Braun
- Programa de-Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
| | - Jader B Ruchel
- Programa de-Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
| | - Stephen A Adefegha
- Programa de-Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
| | - Ana Paula V Coelho
- Graduação em Ciências Biológicas Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
| | - Kelly B Trelles
- Programa de-Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
| | - Cristiane Signor
- Programa de-Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
| | - Maribel A Rubin
- Programa de-Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
| | - Juliana S Oliveira
- Programa de-Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
| | - Guilherme L Dornelles
- Programa de Pós-Graduação em Medicina Veterinária, Setor de Bioquímica e Estresse Oxidativo do Laboratório de Terapia Celular, Centro de Ciências Rurais, Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
| | - Cinthia M de Andrade
- Programa de-Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, RS, 97105-900, Brazil; Programa de Pós-Graduação em Medicina Veterinária, Setor de Bioquímica e Estresse Oxidativo do Laboratório de Terapia Celular, Centro de Ciências Rurais, Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
| | - Lívia G Castilhos
- Programa de-Pós Graduação em Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
| | - Daniela B R Leal
- Programa de-Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, RS, 97105-900, Brazil; Programa de-Pós Graduação em Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, RS, 97105-900, Brazil.
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27
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Guarana (Paullinia cupana) ameliorates memory impairment and modulates acetylcholinesterase activity in Poloxamer-407-induced hyperlipidemia in rat brain. Physiol Behav 2017; 168:11-19. [DOI: 10.1016/j.physbeh.2016.10.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 09/21/2016] [Accepted: 10/04/2016] [Indexed: 01/18/2023]
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28
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Application of an In Vivo Hepatic Triacylglycerol Production Method in the Setting of a High-Fat Diet in Mice. Nutrients 2016; 9:nu9010016. [PMID: 28036028 PMCID: PMC5295060 DOI: 10.3390/nu9010016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 12/02/2016] [Accepted: 12/21/2016] [Indexed: 12/21/2022] Open
Abstract
High-fat (HF) diets typically promote diet-induced obesity (DIO) and metabolic dysfunction (i.e., insulin resistance, hypertriglyceridemia, and hepatic steatosis). Dysfunction of triacylglycerol (TAG) metabolism may contribute to the development of hepatic steatosis, via increased de novo lipogenesis or repackaging of circulating nonesterified fatty acids (NEFAs). Hepatic TAG production (HTP) rate can be assessed through injecting mice with nonionic detergents that inhibit tissue lipoprotein lipase. Potential confounding effects of detergent-based HTP tests (HTPTs) used in longitudinal studies—including the impact on food intake, energy balance, and weight gain—have not been reported. To examine this, male C57BL/6J mice were fed a 10% or 60% kcal diet. After 4 weeks, the mice underwent an HTPT via poloxamer 407 intraperitoneal injections (1000 mg/kg). Weight gain, energy intake, and postabsorptive TAG levels normalized 7–10 days post-HTPT. The post-HTPT recovery of body weight and energy intake suggest that, in metabolic phenotyping studies, any additional sample collection should occur at least 7–10 days after the HTPT to reduce confounding effects. Diet-specific effects on HTP were also observed: HF-fed mice had reduced HTP, plasma TAG, and NEFA levels compared to controls. In conclusion, the current study highlights the procedural and physiological complexities associated with studying lipid metabolism using a HTPT in the DIO mouse model.
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29
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Choi H, Chu HS, Chung M, Kim B, Won JI. Synthesis and characterization of an ELP-conjugated liposome with thermo-sensitivity for controlled release of a drug. BIOTECHNOL BIOPROC E 2016. [DOI: 10.1007/s12257-016-0391-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Korolenko T, Johnston TP, Lykov AP, Shintyapina AB, Khrapova MV, Goncharova NV, Korolenko E, Bgatova NP, Machova E, Nescakova Z, Sakhno LV. A comparative study of the hypolipidaemic effects of a new polysaccharide, mannan Candida albicans serotype A, and atorvastatin in mice with poloxamer 407-induced hyperlipidaemia. J Pharm Pharmacol 2016; 68:1516-1526. [DOI: 10.1111/jphp.12633] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 08/10/2016] [Indexed: 01/15/2023]
Abstract
Abstract
Objectives
We evaluated the hypolipidaemic effect of mannan Candida albicans serotype A, relative to atorvastatin, in a mouse model of hyperlipidaemia.
Methods
Mannan serotype A was investigated in vitro and in vivo to determine its effects on macrophage proliferation, nitric oxide (NO) production by cultured macrophages, serum and liver lipids, changes in liver morphology and serum chitotriosidase activity and its expression in the liver.
Key findings
Mannan serotype A stimulates the macrophage proliferation and NO production in murine peritoneal macrophages in vitro. The activity of serum chitotriosidase (an enzyme released from the activated macrophages) was found to be significantly increased in P-407-induced hyperlipidaemic mice pretreated with low-dose mannan compared with mice administered P-407 only. Mannan treatment in mice was shown to significantly increase the chitotriosidase expression in the liver of both non-hyperlipidaemic and P-407-induced hyperlipidaemic mice. Lastly, mice pretreated with mannan before the induction of hyperlipidaemia with P-407 showed a significant reduction in the serum concentration of atherogenic LDL cholesterol, total cholesterol, triglycerides and liver triglycerides.
Conclusions
It is suggested that mannan serotype A, like β-glucan, may represent another hypolipidaemic agent, which could potentially be used as an adjunctive therapy with conventional antihyperlipidaemic drugs (statins and fibrates) in humans.
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Affiliation(s)
- Tatyana Korolenko
- Scientific Research Institute of Physiology and Basic Medicine, Novosibirsk, Russia
| | - Thomas P Johnston
- Division of Pharmaceutical Sciences, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Alexander P Lykov
- Scientific Institute of Clinical and Experimental Lymphology, Novosibirsk, Russia
| | | | - Marina V Khrapova
- Scientific Research Institute of Physiology and Basic Medicine, Novosibirsk, Russia
| | - Natalya V Goncharova
- Scientific Research Institute of Physiology and Basic Medicine, Novosibirsk, Russia
| | | | - Nataliya P Bgatova
- Scientific Institute of Clinical and Experimental Lymphology, Novosibirsk, Russia
| | - Eva Machova
- Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Zuzana Nescakova
- Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Ludmila V Sakhno
- Scientific Institute of Fundamental and Clinical Immunology, Novosibirsk, Russia
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31
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Gilinsky MA, Johnston TP, Zhukova NA, Dubrovina NI, Latysheva TV, Naumenko SE, Sukhovershin RA. Methylated arginine analogues: their potential role in atherosclerosis and cognition using the poloxamer-407-induced mouse model of dyslipidemia. Can J Physiol Pharmacol 2016; 94:1122-1131. [PMID: 27454106 DOI: 10.1139/cjpp-2016-0104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An experimental mouse model of dyslipidemia and atherosclerosis was utilized to study the generation of methylarginines in vivo, as well as any potential behavioral changes in mice associated with the production of excess methylarginines. Following 14 weeks of poloxamer 407 treatment, mice developed atherosclerosis and the plasma concentrations of monomethylarginine and asymmetric dimethylarginine were found to be significantly greater than corresponding concentrations in control mice. This finding may have contributed to the development of aortic atherosclerotic lesions in poloxamer-treated mice by interfering with nitric oxide availability and, hence, normal function of vascular endothelium. Poloxamer-407-treated mice also showed a significant decrease in locomotor and exploratory activity, together with signs of emotional stress and anxiety relative to controls. Passive avoidance testing to assess learning and memory provided suggestive evidence that poloxamer-treated mice could potentially be characterized as having undergone a disruption in the process of forgetting about an aversive event, specifically, a foot shock, when compared with control mice. Thus, it is also suggested that the increase in both plasma monomethylarginine and asymmetric dimethylarginine in poloxamer-407-treated mice may somehow influence learning and memory, because endothelial dysfunction caused by reduced nitric oxide availability has been hypothesized to negatively influence cognitive function.
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Affiliation(s)
- Michael A Gilinsky
- a Scientific Research Institute of Physiology and Basic Medicine, 4 Timakova St., 630117, Novosibirsk, Russian Federation
| | - Thomas P Johnston
- b Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO 64108-2718, USA
| | - Natalia A Zhukova
- c Voroztzov N.N. Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Prosp. Acad. Lavrentjev, 630090, Novosibirsk, Russian Federation
| | - Nina I Dubrovina
- a Scientific Research Institute of Physiology and Basic Medicine, 4 Timakova St., 630117, Novosibirsk, Russian Federation
| | - Tatyana V Latysheva
- a Scientific Research Institute of Physiology and Basic Medicine, 4 Timakova St., 630117, Novosibirsk, Russian Federation
| | - Sergey E Naumenko
- a Scientific Research Institute of Physiology and Basic Medicine, 4 Timakova St., 630117, Novosibirsk, Russian Federation
| | - Roman A Sukhovershin
- a Scientific Research Institute of Physiology and Basic Medicine, 4 Timakova St., 630117, Novosibirsk, Russian Federation
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32
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Xiao F, Deng J, Guo Y, Niu Y, Yuan F, Yu J, Chen S, Guo F. BTG1 ameliorates liver steatosis by decreasing stearoyl-CoA desaturase 1 (SCD1) abundance and altering hepatic lipid metabolism. Sci Signal 2016; 9:ra50. [PMID: 27188441 DOI: 10.1126/scisignal.aad8581] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Liver steatosis, a condition in which lipid accumulates in liver cells, is a leading cause of many liver diseases. The livers of patients with hepatocellular carcinoma, a cancer characterized by liver steatosis, have decreased abundance of the transcription cofactor BTG1 (B cell translocation gene 1). We showed that the livers of db/db mice, which are a genetic model of obesity, had decreased BTG1 mRNA and protein abundance. BTG1 overexpression ameliorated liver steatosis in db/db mice, whereas knockdown of BTG1 induced liver steatosis in wild-type mice. Consistent with these changes, we found that BTG1 decreased triglyceride accumulation in cultured hepatocytes. BTG1 overexpression inhibited the expression of the gene encoding stearoyl-CoA desaturase 1 (SCD1), an enzyme involved in the synthesis of fatty acids, by suppressing the activity of activating transcription factor 4 (ATF4). Knockdown of SCD1 prevented liver steatosis in wild-type mice induced by knockdown of BTG1. Conversely, the ability of BTG1 overexpression to ameliorate liver steatosis in db/db mice was negated by ATF4 overexpression. Moreover, BTG1 transgenic mice were resistant to liver steatosis induced by a high-carbohydrate diet. BTG1 abundance was decreased by this diet through a pathway that involved mammalian target of rapamycin (mTOR), ribosomal protein S6 kinase 1 (S6K1), and cAMP response element-binding protein (CREB). Together, our study identifies a role of BTG1 in regulating hepatic lipid metabolism and specifically in preventing ATF4 and SCD1 from inducing liver steatosis.
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Affiliation(s)
- Fei Xiao
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Jiali Deng
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yajie Guo
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yuguo Niu
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Feixiang Yuan
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Junjie Yu
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Shanghai Chen
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Feifan Guo
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
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33
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Park J, Yeom M, Hahm DH. Fucoidan improves serum lipid levels and atherosclerosis through hepatic SREBP-2-mediated regulation. J Pharmacol Sci 2016; 131:84-92. [PMID: 27094367 DOI: 10.1016/j.jphs.2016.03.007] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 03/08/2016] [Accepted: 03/14/2016] [Indexed: 12/21/2022] Open
Abstract
Hyperlipidemia is associated with increased risk of the development of cardiovascular diseases. Although a great deal of attention has been paid to the hypolipidemic activity of fucoidan, complex polysaccharides from brown seaweeds, the underlying mechanism is still unclear. This study was performed to investigate whether and how fucoidan has lipid-lowering potential in poloxamer-407 (P407)-induced hyperlipidemic mice. Fucoidan treatment 2 h after acute administration of P407 in these mice significantly reduced serum total cholesterol, triglycerides, and LDL cholesterol levels, but increased the levels of HDL cholesterol. In HepG2 hepatocytes and the liver, fucoidan decreased the expression of FAS and ACC mRNA with no or only a moderate inhibitory effect on SREBP-1c mRNA expression. Furthermore, fucoidan attenuated the hepatic expression of mature SREBP-2 protein with a subsequent decrease in hepatic HMG-CoA reductase mRNA expression and an increase in hepatic LDL receptor mRNA expression. In addition, atherosclerotic lesions in the aorta of chronically P407-treated mice were also reduced by fucoidan. These findings indicate that fucoidan improves serum lipid levels by regulating the expression of key enzymes of cholesterol and triglyceride syntheses in the liver through modulation of SREBP-2.
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Affiliation(s)
- Jinhee Park
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Mijung Yeom
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Dae-Hyun Hahm
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea; Department of Science in Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea.
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Xiao Y, Liu H, Yu J, Zhao Z, Xiao F, Xia T, Wang C, Li K, Deng J, Guo Y, Chen S, Chen Y, Guo F. Activation of ERK1/2 Ameliorates Liver Steatosis in Leptin Receptor-Deficient (db/db) Mice via Stimulating ATG7-Dependent Autophagy. Diabetes 2016; 65:393-405. [PMID: 26581593 DOI: 10.2337/db15-1024] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 11/11/2015] [Indexed: 11/13/2022]
Abstract
Although numerous functions of extracellular signal-regulated kinase 1/2 (ERK1/2) are identified, a direct effect of ERK1/2 on liver steatosis has not been reported. Here, we show that ERK1/2 activity is compromised in livers of leptin receptor-deficient (db/db) mice. Adenovirus-mediated activation of mitogen-activated protein kinase kinase 1 (MEK1), the upstream regulator of ERK1/2, significantly ameliorated liver steatosis in db/db mice, increased expression of genes related to fatty acid β-oxidation and triglyceride (TG) export and increased serum β-hydroxybutyrate (3-HB) levels. Opposite effects were observed in adenovirus-mediated ERK1/2 knockdown C57/B6J wild-type mice. Furthermore, autophagy and autophagy-related protein 7 (ATG7) expression were decreased or increased by ERK1/2 knockdown or activation, respectively, in primary hepatocytes and liver. Blockade of autophagy by the autophagy inhibitor chloroquine or adenovirus-mediated ATG7 knockdown reversed the ameliorated liver steatosis in recombinant adenoviruses construct expressing rat constitutively active MEK1 Ad-CA MEK1 db/db mice, decreased expression of genes related to fatty acid β-oxidation and TG export, and decreased serum 3-HB levels. Finally, ERK1/2 regulated ATG7 expression in a p38-dependent pathway. Taken together, these results identify a novel beneficial role for ERK1/2 in liver steatosis via promoting ATG7-dependent autophagy, which provides new insights into the mechanisms underlying liver steatosis and important hints for targeting ERK1/2 in treating liver steatosis.
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Affiliation(s)
- Yuzhong Xiao
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Hao Liu
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Junjie Yu
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Zilong Zhao
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Fei Xiao
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Tingting Xia
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Chunxia Wang
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Kai Li
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Jiali Deng
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Yajie Guo
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Shanghai Chen
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Yan Chen
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
| | - Feifan Guo
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai, China
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Korolenko TA, Johnston TP, Tuzikov FV, Tuzikova NA, Pupyshev AB, Spiridonov VK, Goncharova NV, Maiborodin IV, Zhukova NA. Early-stage atherosclerosis in poloxamer 407-induced hyperlipidemic mice: pathological features and changes in the lipid composition of serum lipoprotein fractions and subfractions. Lipids Health Dis 2016; 15:16. [PMID: 26801626 PMCID: PMC4724105 DOI: 10.1186/s12944-016-0186-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Accepted: 01/19/2016] [Indexed: 01/08/2023] Open
Abstract
Background The aims of this study were to evaluate the effect of poloxamer 407 administration on atherogenic serum lipoprotein fractions and subfractions associated with cholesterol, triglycerides and phospholipids, as well as the onset of early atherosclerosis, in mice. Methods Mice were administered either sterile saline or poloxamer 407 (to induce a dose-controlled hyperlipidemia) for 1 month and then sacrificed at 1, 4 and 10 days after the last dose of poloxamer 407. Systolic and diastolic blood pressure, the activity of a cysteine protease (cathepsin B) in cardiac and liver tissue, and histological/morphological examination of heart and liver specimens was performed for each group of mice at each time point. Lastly, small angle X-ray scattering was utilized to analyze the lipoprotein fractions and subfractions associated with cholesterol, triglycerides and phospholipids for both groups of mice at each time point. Statistical analysis was performed using one-way, analysis-of-variance with post hoc analysis to determine significantly different mean values, while correlation analysis employed the Spearman test. Results Poloxamer 407-treated mice revealed significant hyperlipidemia, moderately elevated blood pressure, general lipidosis in liver cells, increased cysteine protease activity in heart tissue, and contractile-type changes in cardiomyocytes. Similar to humans, the onset of atherosclerosis in poloxamer 407-treated mice was characterized by a steady increase in serum low-density, intermediate-density and very-low-density lipoprotein fractions, as well as very-low-density lipoprotein subfractions. Conclusions We would propose that the sustained elevation of serum atherogenic lipoprotein fractions and subfractions induced by the administration of poloxamer 407 to mice resulted in the morphological changes we observed in both heart and liver cells, which are suggested to precede atherosclerosis, since this is a well-established mouse model of atherosclerosis. Since most of the cellular, biochemical and physiological changes documented in the present study using poloxamer 407-treated mice are related to the symptoms of early atherosclerosis in humans, it is suggested that the poloxamer 407-induced mouse model of hyperlipidemia and atherosclerosis might prove beneficial as an experimental animal model with which to evaluate the pathological features observed in early-stage atherosclerosis.
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Affiliation(s)
- Tatyana A Korolenko
- Institute of Physiology and Fundamental Medicine, Siberian Branch of the Russian Academy of Medical Sciences, Timakov St. 4, Novosibirsk, 630117, Russia.
| | - Thomas P Johnston
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, Rm. 4243, HSB, 2464 Charlotte Street, Kansas City, MO, 64108-2718, USA.
| | - Fedor V Tuzikov
- Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia. .,Novosibirsk State University, Novosibirsk, Russia.
| | - Natalia A Tuzikova
- Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia. .,Novosibirsk State University, Novosibirsk, Russia.
| | | | - Victor K Spiridonov
- Institute of Physiology and Fundamental Medicine, Siberian Branch of the Russian Academy of Medical Sciences, Timakov St. 4, Novosibirsk, 630117, Russia
| | - Natalya V Goncharova
- Institute of Physiology and Fundamental Medicine, Siberian Branch of the Russian Academy of Medical Sciences, Timakov St. 4, Novosibirsk, 630117, Russia.
| | - Igor V Maiborodin
- Siberian Division of the Russian Academy of Sciences, Institute of Chemical Biology and Basic Medicine, Novosibirsk, Russia.
| | - Natalia A Zhukova
- Vorozhtzov N.N. Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.
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Korolenko T, Pisareva E, Filyushina E, Johnston T, Machova E. Serum cystatin C and chitotriosidase in acute P-407 induced dyslipidemia: Can they serve as potential early biomarkers for atherosclerosis? ACTA ACUST UNITED AC 2015; 67:459-66. [DOI: 10.1016/j.etp.2015.06.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 05/21/2015] [Accepted: 06/13/2015] [Indexed: 02/03/2023]
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Zhang K, Shi X, Lin X, Yao C, Shen L, Feng Y. Poloxamer-based in situ hydrogels for controlled delivery of hydrophilic macromolecules after intramuscular injection in rats. Drug Deliv 2014; 22:375-82. [PMID: 24601854 DOI: 10.3109/10717544.2014.891272] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
This study is aimed to investigate the applicability of poloxamer 407 (P407) and 188 (P188)-based temperature-sensitive in situ hydrogel (TSHG) in sustained delivery of hydrophilic macromolecules following intramuscular administration. Polyethylene glycols (PEGs) with molecular weight of 5-, 20-, and 40-kDa were used as model drugs, which can represent the common size range of hydrophilic macromolecular drugs using TSHG. The correlation between the level of poloxamers and thermogelling transition temperatures (Tsol-gel) was established and two formulations "20% P407/10% P188" and "24% P407/10% P188" were chosen for further study. The results showed that the release kinetics of PEGs was close to zero order. Sustained in vivo behaviors were achieved by both of the two formulations for all the PEGs though variations were seen. Lower molecular weight PEG showed more remarkable pharmacokinetic improvements. No significant differences in pharmacokinetics were observed between the two formulations for the same PEG. This suggested that 20-24% P407/10% P188 formulations, with accordingly Tsol-gel in the range of 24.6 °C-31.7 °C, might be freely chosen to achieve comparable pharmacokinetics for hydrophilic macromolecular drugs after intramuscular injection.
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Affiliation(s)
- Kai Zhang
- College of Chinese Materia Medica and
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Effect of poloxamer 407 administration on the serum lipids profile, anxiety level and protease activity in the heart and liver of mice. Interdiscip Toxicol 2013; 6:18-25. [PMID: 24170975 PMCID: PMC3795317 DOI: 10.2478/intox-2013-0004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 03/14/2013] [Accepted: 03/17/2013] [Indexed: 01/23/2023] Open
Abstract
Chronic administration of the poloxamer 407 (P-407), a block copolymer, to elevate serum lipids in mice is a well-established mouse model of hyperlipidemia and atherosclerosis. We tested the hypothesis that the activity of several types of proteases in heart and liver tissue is changed in the early stages of atherosclerosis development. Additionally, we evaluated whether increased serum lipids would induce anxiety in mice, as determined by using a ‘plus-maze’ test. The mice were administered P-407 by intraperitoneal injection twice a week for one month. P-407 administration to mice resulted in a marked increase in total serum cholesterol, atherogenic non-HDL-cholesterol, and especially in total triglycerides, and it also increased anxiety. Morphological changes observed in P-407-treated mice included contractile type changes in cardiomyocytes and foamy macrophages in liver. A significant increase of cysteine proteases cathepsin B and cathepsin L (at 24 h) and aspartate protease cathepsin D (at both 24 h and 5 days) was determined in heart tissue following P-407 administration. However, no changes were noted in heart matrix metalloproteinase activity. The activity of cysteine and aspartate proteases was significantly increased in liver at both 24 hours and 5 days after P-407 administration. In conclusion, administration of P-407 to mice for one month resulted in increased anxiety, and more importantly, there was an increase in the activity of heart and liver proteases secondary to sustained dyslipidemia. It is suggested that heart and liver cysteine and aspartate proteases may represent potential therapeutic targets in the early stages of atherosclerosis.
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Complement monitoring of Pluronic 127 gel and micelles: Suppression of copolymer-mediated complement activation by elevated serum levels of HDL, LDL, and apolipoproteins AI and B-100. J Control Release 2013; 170:167-74. [DOI: 10.1016/j.jconrel.2013.05.030] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Revised: 05/23/2013] [Accepted: 05/28/2013] [Indexed: 01/06/2023]
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Schliephake H, Drewes M, Mihatovic I, Schwarz F, Becker J, Iglhaut G. Use of a self-curing resorbable polymer in vertical ridge augmentations - a pilot study in dogs. Clin Oral Implants Res 2013; 25:435-40. [DOI: 10.1111/clr.12162] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2013] [Indexed: 11/29/2022]
Affiliation(s)
- Henning Schliephake
- Department of Oral and Maxillofacial Surgery; George-Augusta-University; Göttingen Germany
| | - Mona Drewes
- Department of Oral and Maxillofacial Surgery; George-Augusta-University; Göttingen Germany
| | - Ilja Mihatovic
- Department of Oral Surgery; Heinrich-Heine-University; Düsseldorf Germany
| | - Frank Schwarz
- Department of Oral Surgery; Heinrich-Heine-University; Düsseldorf Germany
| | - Jürgen Becker
- Department of Oral Surgery; Heinrich-Heine-University; Düsseldorf Germany
| | - Gerhard Iglhaut
- Department of Oral and Maxillofacial Surgery; George-Augusta-University; Göttingen Germany
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Garcia-Arcos I, Hiyama Y, Drosatos K, Bharadwaj KG, Hu Y, Son NH, O'Byrne SM, Chang CL, Deckelbaum RJ, Takahashi M, Westerterp M, Obunike JC, Jiang H, Yagyu H, Blaner WS, Goldberg IJ. Adipose-specific lipoprotein lipase deficiency more profoundly affects brown than white fat biology. J Biol Chem 2013; 288:14046-14058. [PMID: 23542081 DOI: 10.1074/jbc.m113.469270] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Adipose fat storage is thought to require uptake of circulating triglyceride (TG)-derived fatty acids via lipoprotein lipase (LpL). To determine how LpL affects the biology of adipose tissue, we created adipose-specific LpL knock-out (ATLO) mice, and we compared them with whole body LpL knock-out mice rescued with muscle LpL expression (MCK/L0) and wild type (WT) mice. ATLO LpL mRNA and activity were reduced, respectively, 75 and 70% in gonadal adipose tissue (GAT), 90 and 80% in subcutaneous tissue, and 84 and 85% in brown adipose tissue (BAT). ATLO mice had increased plasma TG levels associated with reduced chylomicron TG uptake into BAT and lung. ATLO BAT, but not GAT, had altered TG composition. GAT from MCK/L0 was smaller and contained less polyunsaturated fatty acids in TG, although GAT from ATLO was normal unless LpL was overexpressed in muscle. High fat diet feeding led to less adipose in MCK/L0 mice but TG acyl composition in subcutaneous tissue and BAT reverted to that of WT. Therefore, adipocyte LpL in BAT modulates plasma lipoprotein clearance, and the greater metabolic activity of this depot makes its lipid composition more dependent on LpL-mediated uptake. Loss of adipose LpL reduces fat accumulation only if accompanied by greater LpL activity in muscle. These data support the role of LpL as the "gatekeeper" for tissue lipid distribution.
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Affiliation(s)
- Itsaso Garcia-Arcos
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Yaeko Hiyama
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Konstantinos Drosatos
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Kalyani G Bharadwaj
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Yunying Hu
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Ni Huiping Son
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Sheila M O'Byrne
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Chuchun L Chang
- Institute of Human Nutrition, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Richard J Deckelbaum
- Institute of Human Nutrition, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Manabu Takahashi
- Department of Medicine, Jichii University, Tochigi 329-0498, Japan
| | - Marit Westerterp
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Medical Biochemistry, University of Amsterdam, 1105AZ Amsterdam, The Netherlands
| | - Joseph C Obunike
- Department of Biological Sciences, New York City College of Technology, City University of New York, Brooklyn, New York 11201
| | - Hongfeng Jiang
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Hiroaki Yagyu
- Department of Medicine, Jichii University, Tochigi 329-0498, Japan
| | - William S Blaner
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032
| | - Ira J Goldberg
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032.
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Yasuda T, Johnston TP, Shinohara M, Inoue M, Ishida T. The effect of poloxamer 407 on the functional properties of HDL in mice. J Pharm Pharmacol 2012; 64:677-87. [DOI: 10.1111/j.2042-7158.2011.01444.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Abstract
Objectives
There is an inverse relationship between high-density lipoprotein (HDL) and heart disease. HDL possesses not only both antioxidant and anti-inflammatory properties, but also anti-thrombotic and endothelial function-promoting qualities. However, it is not only the serum concentration of HDL that is important, but also the ‘functional’ quality of the HDL. The objective was to determine the functional status of HDL in a well-established mouse model of dyslipidaemia and atherosclerosis induced by the administration of a block copolymer (poloxamer 407; P-407).
Methods
C57BL/6 mice were administered a single intraperitoneal dose of P-407 (0.5 g/kg) and blood was collected at 24 h post-dosing. HDL was isolated from controls (control HDL) and P-407-treated (P-407 HDL) mice and used to test its anti-inflammatory properties in vitro. Additionally, antioxidant enzymes associated with HDL, namely, platelet activating factor-acetylhydrolase (PAF-AH) and paraoxonase (PON), were evaluated for any potential reduction in their biological activity.
Key findings
A single injection of P-407 in C57BL/6 mice resulted in a marked decrease in the levels of HDL-cholesterol and phospholipids. HDL particle size significantly increased, primarily due to remodelling of HDL with triglyceride. It was demonstrated that (i) long-chain saturated fatty acids were higher and the n-3/n-6 fatty acid ratio was significantly lower for P-407 HDL compared with control HDL, and (ii) P-407 HDL lost its capacity to inhibit tumour necrosis factor-α (TNF-α)-induced vascular cell adhesion molecule-1 (VCAM-1) expression compared with control HDL. Additionally, P-407 HDL was not able to neutralize lipopolysaccharide and inhibit subsequent TNF-α production compared with control HDL. The biological activity of platelet-activating factor acetylhydrolase (PAF-AH) and paraoxonase (PON) decreased in direct proportion to the circulating levels of both HDL-cholesterol and apolipoprotein (apoA-1).
Conclusions
Combination of previously reported findings in P-407-treated mice, such as (i) production of both oxidized LDL and malondialdehyde, and (ii) profound elevations in the soluble forms of intercellular adhesion molecule-1 (ICAM-1), VCAM-1, and E-selectin, with the present results, would strongly suggest that HDL in P-407-treated mice is rendered dysfunctional. Thus, these findings help to explain why P-407-treated mice begin to form aortic atherosclerotic lesions about one month after initiating P-407 treatment.
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Affiliation(s)
- Tomoyuki Yasuda
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
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Hamdy DA, Brocks DR. Effect of hyperlipidemia on ketoconazole–midazolam drug–drug interaction in rat. J Pharm Sci 2011; 100:4986-92. [DOI: 10.1002/jps.22675] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 04/13/2011] [Accepted: 06/03/2011] [Indexed: 11/06/2022]
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44
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Chen L, Zhang M, Liu Z, Gu Z, Tu Y, Ni P. Fabrication of Gene Carrier via Self-assembly of Poly[(dimethylamino)ethyl Methacrylate] and Poly(aspartic acid)-grafted-Poly(ethylene glycol). JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2011. [DOI: 10.1080/10601325.2011.614845] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Patel JP, Brocks DR. Effect of experimental hyperlipidaemia on the electrocardiographic effects of repeated doses of halofantrine in rats. Br J Pharmacol 2011; 161:1427-40. [PMID: 20698852 DOI: 10.1111/j.1476-5381.2010.00983.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Halofantrine can cause a prolongation of the cardiac QT interval, leading to serious ventricular arrhythmias. Hyperlipidaemia elevates plasma concentration of halofantrine and may influence its tissue uptake. The present study examined the effect of experimental hyperlipidaemia on QT interval prolongation induced by halofantrine in rats. EXPERIMENTAL APPROACH Normolipidaemic and hyperlipidaemic rats (induced with poloxamer 407) were given 4 doses of halofantrine (i.v., 4-40 mg·kg(-1)·d(-1)) or vehicle every 12 h. Under brief anaesthesia, ECGs were recorded before administration of the vehicle or drug and 12 h after the first and last doses. Blood samples were taken at the same time after the first and last dose of halofantrine. Hearts were also collected 12 h after the last dose. Plasma and heart samples were assayed for drug and desbutylhalofantrine using a stereospecific method. KEY RESULTS In the vehicle group, hyperlipidaemia by itself did not affect the ECG. Compared to baseline, QT intervals were significantly higher in both normolipidaemic and hyperlipidaemic rats after halofantrine. In hyperlipidaemic rats, plasma but not heart concentrations of the halofantrine enantiomers were significantly higher compared to those in normolipidaemic rats. Despite the lack of difference in the concentrations of halofantrine in heart, QT intervals were significantly higher in hyperlipidaemic compared to those in normolipidaemic rats. CONCLUSIONS AND IMPLICATIONS The unbound fraction of halofantrine appeared to be the controlling factor for drug uptake by the heart. Our data suggested a greater vulnerability to halofantrine-induced QT interval prolongation in the hyperlipidaemic state.
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Affiliation(s)
- Jigar P Patel
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
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Lee JH, Oh JH, Lee YJ. Effects of experimental hyperlipidaemia on the pharmacokinetics of docetaxel in rats. Xenobiotica 2011; 41:797-804. [PMID: 21561320 DOI: 10.3109/00498254.2011.580019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Hyperlipidaemia correlates with an increased risk of occurrence of various cancers. In this study, the effects of hyperlipidaemia on the pharmacokinetics of docetaxel, a member of the taxane class of anti-cancer drugs, were investigated in rats with experimental hyperlipidaemia; we focused on the alterations in docetaxel metabolism and plasma distribution. Docetaxel (5 mg/kg intravenously (i.v.) and 40 mg/kg per oral (p.o.)) was administered to control rats and rats with poloxamer-407 (P-407)-induced hyperlipidaemia (1 g/kg, intraperitoneally). In vitro studies were conducted on hepatic metabolism in S9 fractions and plasma protein binding using the ultrafiltration method. Hyperlipidaemia dramatically increased the area under the plasma concentration-time curve from time 0 to infinity (AUC(0-∞)) of docetaxel after i.v. (1.86-fold) or p.o. (10.8-fold) administration and decreased total body clearance (0.574-fold) and apparent volume of distribution at steady state (0.615-fold) of docetaxel after i.v. administration. Compared with the control rats, the metabolism of docetaxel by hepatic S9 fractions and the unbound fraction in the plasma in the hyperlipidaemic rats were decreased, i.e., by 20.1 and 79.8%, respectively. In conclusion, the alterations in docetaxel pharmacokinetics in rats with P-407-induced hyperlipidaemia may be due, at least in part, to a decrease in hepatic metabolism and the unbound fraction of docetaxel in the plasma. These findings have potential therapeutic implications for predicting human pharmacokinetic responses to hyperlipidaemia.
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Affiliation(s)
- Joo Hyun Lee
- College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
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47
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Warren A, Benseler V, Cogger VC, Bertolino P, Le Couteur DG. The impact of poloxamer 407 on the ultrastructure of the liver and evidence for clearance by extensive endothelial and kupffer cell endocytosis. Toxicol Pathol 2011; 39:390-7. [PMID: 21257999 DOI: 10.1177/0192623310394212] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Poloxamer 407 (P407) is a non-ionic detergent that is used widely in pharmaceutical formulations and personal care products. In animals, P407 causes hyperlipidaemia. P407 is taken up by the liver and causes loss of fenestrations in liver sinusoidal endothelial cells (LSEC), which contributes to the pathogenesis of hyperlipidaemia. Here the short-term (1-15 days) effects of P407 on all liver cells were investigated in mice using electron and light microscopy. As expected, P407 was associated with hyperlipidaemia. Kupffer cells became massively engorged with vacuoles and took on a marked honeycomb morphology. LSECs also became engorged with vacuoles and endocytosis was activated. The diameter of lipoproteins in the space of Disse was less than those in the lumen, consistent with a filtering effect of fenestrations. Defenestration of the LSEC was noted. Hepatocyte endocytosis of lipoproteins and P407 particles was also noted; however, hepatocyte steatosis was not evident. Hepatic stellate cells did not appear to be abnormal. In conclusion, P407 is taken up by the liver mostly through endocytosis by LSECs and Kupffer cells.
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Affiliation(s)
- Alessandra Warren
- Centre for Education and Research on Ageing and the ANZAC Research Institute, University of Sydney and Concord Hospital, Sydney, Australia
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Cho J, Cho JC, Lee P, Lee M, Oh E. Formulation and evaluation of an alternative triglyceride-free propofol microemulsion. Arch Pharm Res 2010; 33:1375-87. [DOI: 10.1007/s12272-010-0911-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Revised: 05/19/2010] [Accepted: 07/05/2010] [Indexed: 10/19/2022]
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Johnston TP. Poloxamer 407 as a general lipase inhibitor: its implications in lipid metabolism and atheroma formation in C57BL/6 mice. J Pharm Pharmacol 2010; 62:1807-12. [PMID: 21054409 DOI: 10.1111/j.2042-7158.2010.01138.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: 11/29/2022]
Abstract
OBJECTIVES The aims of this investigation were to determine if the activity of endothelial lipase was inhibited in vitro by the polymeric surfactant, poloxamer 407 (P-407), and to review the action of P-407 on the biological activity of several other critical lipases involved in lipid metabolism. The overall goal was to suggest a possible explanation for the observed dyslipidaemia and formation of aortic atherosclerotic lesions when present and previous findings, along with key findings proposed by others, were combined and reviewed in the context of the P-407-induced mouse model of atherogenesis. KEY FINDINGS Endothelial lipase was expressed using a recombinant adenovirus; subconfluent COS cells were exposed to recombinant adenoviruses and triglyceride lipase activity was determined using standard assay methods. It was demonstrated that P-407 inactivates endothelial lipase in vitro. Endothelial lipase was inhibited in vitro by P-407, with an IC50 of approximately 11.3 µm. It is suggested that one possible explanation for the eventual formation of aortic atherosclerotic lesions in the P-407-induced mouse model of atherogenesis may be related to the capacity of P-407 to inhibit the activity of several critical lipases involved in lipid metabolism. CONCLUSIONS The following physiological and biochemical processes are all observed in the P-407-induced mouse model of dyslipidaemia and atherosclerosis: inactivation of endothelial lipase (both in vitro and in vivo), hepatic lipase and lipoprotein lipase by P-407; reduced plasma levels of high-density lipoprotein cholesterol; no activation of either human or mouse peroxisome proliferator-activated receptor α (as well as peroxisome proliferator-activated receptor γ) in vitro or in vivo; increased plasma concentrations of soluble vascular cell adhesion molecule 1, soluble intercellular adhesion molecule 1 and soluble E-selectin; and aortic atherosclerotic lesion formation following 12-16 weeks of P-407 administration (0.5 g/kg administered every 3 days by intraperitoneal injection). This biochemical-based pathway, or series of events, may contribute, in part, to the dyslipidaemia and eventual formation of aortic atherosclerotic lesions observed in the P-407-induced mouse model of atherogenesis.
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Affiliation(s)
- Thomas P Johnston
- Division of Pharmaceutical Science, School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO 64108-2718, USA.
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50
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Johnston TP. Poloxamer 407 increases soluble adhesion molecules, ICAM-1, VCAM-1 and E-selectin, in C57BL/6 mice. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.12.0014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Objectives
Soluble shedded forms of cell adhesion molecules (sCAMs) found in plasma are regarded as surrogate markers for the cellular expression of CAMs. The presence of oxidised low-density lipoprotein (ox-LDL) cholesterol and fatty acids in the plasma, hypertriglyceridaemia and reduced plasma concentrations of high-density lipoprotein cholesterol (HDL-C) are all thought to stimulate an increase in the cellular expression of CAMs such as vascular cell adhesion molecule-1 (VCAM-1), intercellular adhesion molecule-1 (ICAM-1) and E-selectin. Our objectives were to determine how plasma levels of the soluble CAMs were modulated in a mouse model of dyslipidaemia induced chemically with poloxamer 407, and how these changes might be related to changes in the plasma concentrations of total cholesterol, HDL-C, non-HDL-C and triglycerides.
Methods
C57BL/6 mice were given a single intraperitoneal dose of poloxamer 407 (0.5 g/kg) and plasma concentrations of lipid fractions and sCAMs were measured at predetermined time points thereafter.
Key findings
The plasma concentrations of each sCAM were significantly increased in our mouse model of atherogenic dyslipidaemia compared with control mice administered saline, although the temporal relationship between the plasma sCAM concentration-time profiles and the plasma lipid concentration-time profiles were not coincident.
Conclusions
The atherogenic profile in our mouse model was associated with increases in the plasma concentrations of sICAM-1, sVCAM-1 and sE-selectin. These changes precede the formation of atherosclerotic lesions shown in previous work. This suggests the use of these sCAMs as biomarkers of future atheroma formation in this particular animal model.
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Affiliation(s)
- Thomas P Johnston
- Division of Pharmaceutical Science, School of Pharmacy and University of Missouri-Kansas City, Kansas City, MO, USA
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