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Razzi F, Lovrak M, Gruzdyte D, Den Hartog Y, Duncker DJ, van Esch JH, van Steijn V, van Beusekom HMM. An Implantable Artificial Atherosclerotic Plaque as a Novel Approach for Drug Transport Studies on Drug-Eluting Stents. Adv Healthc Mater 2022; 11:e2101570. [PMID: 34865315 DOI: 10.1002/adhm.202101570] [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: 08/02/2021] [Revised: 10/31/2021] [Indexed: 11/11/2022]
Abstract
Atherosclerotic arteries are commonly treated using drug-eluting stents (DES). However, it remains unclear whether and how the properties of atherosclerotic plaque affect drug transport in the arterial wall. A limitation of the currently used atherosclerotic animal models to study arterial drug distribution is the unpredictability of plaque size, composition, and location. In the present study, the aim is to create an artificial atherosclerotic plaque-of reproducible and controllable complexity and implantable at specific locations-to enable systematic studies on transport phenomena of drugs in stented atherosclerosis-mimicking arteries. For this purpose, mixtures of relevant lipids at concentrations mimicking atherosclerotic plaque are incorporated in gelatin/alginate hydrogels. Lipid-free (control) and lipid-rich hydrogels (artificial plaque) are created, mounted on DES and successfully implanted in porcine coronary arteries ex-vivo. Matrix-assisted laser desorption ionization mass spectrometry imaging (MALDI-MSI) is used to measure local drug distribution in the arterial wall behind the prepared hydrogels, showing that the lipid-rich hydrogel significantly hampers drug transport as compared to the lipid-free hydrogel. This observation confirms the importance of studying drug transport phenomena in the presence of lipids and of having an experimental model in which lipids and other plaque constituents can be precisely controlled and systematically studied.
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Affiliation(s)
- Francesca Razzi
- Department of Experimental Cardiology Erasmus Medical Center Doctor Molewaterplein 40 Rotterdam 3015 GD The Netherlands
| | - Matija Lovrak
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 Delft 2629 HZ The Netherlands
| | - Dovile Gruzdyte
- Department of Experimental Cardiology Erasmus Medical Center Doctor Molewaterplein 40 Rotterdam 3015 GD The Netherlands
| | - Yvette Den Hartog
- Department of Experimental Cardiology Erasmus Medical Center Doctor Molewaterplein 40 Rotterdam 3015 GD The Netherlands
| | - Dirk J. Duncker
- Department of Experimental Cardiology Erasmus Medical Center Doctor Molewaterplein 40 Rotterdam 3015 GD The Netherlands
| | - Jan H. van Esch
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 Delft 2629 HZ The Netherlands
| | - Volkert van Steijn
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 Delft 2629 HZ The Netherlands
| | - Heleen M. M. van Beusekom
- Department of Experimental Cardiology Erasmus Medical Center Doctor Molewaterplein 40 Rotterdam 3015 GD The Netherlands
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Resveratrol Treatment Is Associated with Lipid Regulation and Inhibition of Lipoprotein-Associated Phospholipase A2 (Lp-PLA2) in Rabbits Fed a High-Fat Diet. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:9641582. [PMID: 32595754 PMCID: PMC7256704 DOI: 10.1155/2020/9641582] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 03/10/2020] [Accepted: 04/18/2020] [Indexed: 12/16/2022]
Abstract
The effects of resveratrol on various conditions have been widely studied previously. This paper aimed to investigate the influence of resveratrol on atherosclerosis (AS). Twenty-four New Zealand male rabbits were randomly and equally assigned to the normal diet group (NDG), fat diet group (FDG), and fat diet with resveratrol group (80 mg/kg/d, RFG). Biochemical indicators from blood samples were analyzed at baseline and 3 months to investigate the effects of resveratrol on blood lipid, lipoprotein-associated phospholipase A2 (Lp-PLA2), liver, and renal function. The indicators including alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), triglycerides (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), and Lp-PLA2. At 3 months, arteries were stained with hematoxylin and eosin to study the influence of resveratrol on the aortic intima, smooth muscle layer, and the intima/media ratio. Comparisons of weight, ALT, AST, CREA, TG, TC, HDL-C, LDL-C, and Lp-PLA2 among the three groups showed no significant difference at baseline. However, at the end of 3 months, significant differences were observed in AST, CREA, TC, HDL-C, LDL-C, and Lp-PLA2 between the three groups (P < 0.05). In pairwise comparison, CREA, TC, LDL-C, and Lp-PLA2 had significant differences between any two groups (P < 0.05). In addition, there were significant differences in the AST and HDL-C levels between RFG and NDG groups (P < 0.05). Meanwhile, the HDL-C levels were also significantly different between the FDG and NDG groups (P < 0.01). The histologic analysis also showed that the thickness of the aortic intima and the ratio of the intima and aortic tunica media (P < 0.05) significantly decreased in RFG compared to FDG. Resveratrol may have an antiatherosclerosis effect on a rabbit model of AS.
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Luo H, Liu J, Ouyang Q, Xuan C, Wang L, Li T, Liu J. The effects of oleanolic acid on atherosclerosis in different animal models. Acta Biochim Biophys Sin (Shanghai) 2017; 49:349-354. [PMID: 28338883 DOI: 10.1093/abbs/gmx013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Indexed: 12/13/2022] Open
Abstract
In the present study, three animal models, including C57BL/6J mice, low-density lipoprotein receptor knockout (LDLR-/-) mice, and rabbit that mimicked atherosclerosis, were established to investigate the inhibitory effect of oleanolic acid (OA) on atherosclerosis. In rabbit model, serum total cholesterol (TC), triglyceride, low density lipoprotein cholesterol (LDL-C), and high density lipoprotein cholesterol (HDL-C) were measured. Carotid artery lesions were isolated for histological analysis. The red oil O and hematoxylin-eosin staining in liver were examined. The messenger ribonucleicacid (mRNA) levels of PPARγ, AdipoR1, and AdipoR2 related to lipid metabolism were determined. Compared with model group, OA and atorvastatin significantly lowered the levels of TC and LDL-C. The result of red oil O staining showed that OA and atorvastatin had similar effect on reducing the accumulation of lipid. Histological result demonstrated that OA reduced the thickness of intima. AdipoR1 was markedly increased, while AdipoR2 was remarkably decreased in OA group compared with that in the control group of the rabbit model. In LDLR-/- mouse model, lipid parameters in blood and mRNA levels of PPARγ, AdipoR1, and AdipoR2 were measured. It was found that OA exhibited similar effects as atorvastatin including reduced TG, LDL-C, and enhanced HDL-C. Notably, OA elevated the levels of AdipoR1 and PPARγ. At the same time, OA decreased TC and LDL-C in C57BL/6J mice model. Our results in three different animal models all revealed that OA retarded the development of atherosclerosis by influencing serum lipid levels, lipid accumulation in liver and intimal thickening of artery. And the underlying mechanism of OA on atherosclerosis may involve in lipid metabolism genes: PPARγ, AdipoR1, and AdipoR2.
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Affiliation(s)
- Hanqiong Luo
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, China Pharmaceutical University, Nanjing 210009, China
| | - Jine Liu
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, China Pharmaceutical University, Nanjing 210009, China
| | - Qiong Ouyang
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, China Pharmaceutical University, Nanjing 210009, China
| | - Chunxiao Xuan
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, China Pharmaceutical University, Nanjing 210009, China
| | - Lanlan Wang
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, China Pharmaceutical University, Nanjing 210009, China
| | - Tingting Li
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, China Pharmaceutical University, Nanjing 210009, China
| | - Jun Liu
- Jiangsu Key Laboratory of Drug Screening and Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, China Pharmaceutical University, Nanjing 210009, China
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Pepper VK, Clark ES, Best CA, Onwuka EA, Sugiura T, Heuer ED, Moko LE, Miyamoto S, Miyachi H, Berman DP, Cheatham SL, Chisolm JL, Shinoka T, Breuer CK, Cheatham JP. Intravascular Ultrasound Characterization of a Tissue-Engineered Vascular Graft in an Ovine Model. J Cardiovasc Transl Res 2017; 10:128-138. [PMID: 28097523 DOI: 10.1007/s12265-016-9725-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 12/22/2016] [Indexed: 12/19/2022]
Abstract
Patients who undergo implantation of a tissue-engineered vascular graft (TEVG) for congenital cardiac anomalies are monitored with echocardiography, followed by magnetic resonance imaging or angiography when indicated. While these methods provide data regarding the lumen, minimal information regarding neotissue formation is obtained. Intravascular ultrasound (IVUS) has previously been used in a variety of conditions to evaluate the vessel wall. The purpose of this study was to evaluate the utility of IVUS for evaluation of TEVGs in our ovine model. Eight sheep underwent implantation of TEVGs either unseeded or seeded with bone marrow-derived mononuclear cells. Angiography, IVUS, and histology were directly compared. Endothelium, tunica media, and graft were identifiable on IVUS and histology at multiple time points. There was strong agreement between IVUS and angiography for evaluation of luminal diameter. IVUS offers a valuable tool to evaluate the changes within TEVGs, and clinical translation of this application is warranted.
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Affiliation(s)
- Victoria K Pepper
- Tissue Engineering Program, Research Institute at Nationwide Children's Hospital, 700 Children's Drive, WB 4154, Columbus, OH, 43205, USA
- Department of Pediatric Surgery, Nationwide Children's Hospital, Columbus, OH, USA
| | - Elizabeth S Clark
- Tissue Engineering Program, Research Institute at Nationwide Children's Hospital, 700 Children's Drive, WB 4154, Columbus, OH, 43205, USA
- College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
| | - Cameron A Best
- Tissue Engineering Program, Research Institute at Nationwide Children's Hospital, 700 Children's Drive, WB 4154, Columbus, OH, 43205, USA
| | - Ekene A Onwuka
- Tissue Engineering Program, Research Institute at Nationwide Children's Hospital, 700 Children's Drive, WB 4154, Columbus, OH, 43205, USA
- Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Tadahisa Sugiura
- Division of Cardiothoracic Transplant & Mechanical Circulatory Support, Texas Heart Institute at Baylor St. Luke's Medical Center, Houston, TX, USA
| | - Eric D Heuer
- Tissue Engineering Program, Research Institute at Nationwide Children's Hospital, 700 Children's Drive, WB 4154, Columbus, OH, 43205, USA
| | - Lilamarie E Moko
- Tissue Engineering Program, Research Institute at Nationwide Children's Hospital, 700 Children's Drive, WB 4154, Columbus, OH, 43205, USA
| | - Shinka Miyamoto
- Tissue Engineering Program, Research Institute at Nationwide Children's Hospital, 700 Children's Drive, WB 4154, Columbus, OH, 43205, USA
| | - Hideki Miyachi
- Tissue Engineering Program, Research Institute at Nationwide Children's Hospital, 700 Children's Drive, WB 4154, Columbus, OH, 43205, USA
| | - Darren P Berman
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
| | | | - Joanne L Chisolm
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
| | - Toshiharu Shinoka
- Tissue Engineering Program, Research Institute at Nationwide Children's Hospital, 700 Children's Drive, WB 4154, Columbus, OH, 43205, USA
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
- Department of Cardiothoracic Surgery, Nationwide Children's Hospital, Columbus, OH, USA
| | - Christopher K Breuer
- Tissue Engineering Program, Research Institute at Nationwide Children's Hospital, 700 Children's Drive, WB 4154, Columbus, OH, 43205, USA.
- Department of Pediatric Surgery, Nationwide Children's Hospital, Columbus, OH, USA.
| | - John P Cheatham
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
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Serial Coronary Imaging of Early Atherosclerosis Development in Fast-Food-Fed Diabetic and Nondiabetic Swine. JACC Basic Transl Sci 2016; 1:449-460. [PMID: 30167532 PMCID: PMC6113514 DOI: 10.1016/j.jacbts.2016.08.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 08/05/2016] [Accepted: 08/22/2016] [Indexed: 11/23/2022]
Abstract
Patients with diabetes mellitus (DM) are at increased risk for atherosclerosis-related events compared to non-DM (NDM) patients. With an expected worldwide epidemic of DM, early detection of anatomic and functional coronary atherosclerotic changes is gaining attention. To improve our understanding of early atherosclerosis development, we studied a swine model that gradually developed coronary atherosclerosis. Interestingly, optical coherence tomography, near-infrared spectroscopy (NIRS), vascular function, and histology demonstrated no differences between development of early atherosclerosis in fast-food-fed (FF) DM swine and that in FF-NDM swine. Coronary computed tomography angiography did not detect early atherosclerosis, but optical coherence tomography and near-infrared spectroscopy demonstrated coronary atherosclerosis development in FF-DM and FF-NDM swine.
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Key Words
- CCTA, coronary computed tomography angiography
- DM, diabetes mellitus
- FF, fast-food-fed
- FIT, fibrous intimal thickening
- LCP, lipid core plaque
- LL, lipid-laden
- NDM, no/non-diabetes mellitus
- NIRS, near-infrared spectroscopy
- OCT, optical coherence tomography
- QCA, quantitative coronary angiography
- SNAP, S-nitroso-N-acetylpenicillamine
- animal model
- coronary artery disease
- coronary computed tomography angiography
- diabetes mellitus
- near-infrared spectroscopy
- optical coherence tomography
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Sorop O, van den Heuvel M, van Ditzhuijzen NS, de Beer VJ, Heinonen I, van Duin RWB, Zhou Z, Koopmans SJ, Merkus D, van der Giessen WJ, Danser AHJ, Duncker DJ. Coronary microvascular dysfunction after long-term diabetes and hypercholesterolemia. Am J Physiol Heart Circ Physiol 2016; 311:H1339-H1351. [PMID: 27591223 DOI: 10.1152/ajpheart.00458.2015] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 09/01/2016] [Indexed: 02/07/2023]
Abstract
Coronary microvascular dysfunction (CMD) has been proposed as an important component of diabetes mellitus (DM)- and hypercholesterolemia-associated coronary artery disease (CAD). Previously we observed that 2.5 mo of DM and high-fat diet (HFD) in swine blunted bradykinin (BK)-induced vasodilation and attenuated endothelin (ET)-1-mediated vasoconstriction. Here we studied the progression of CMD after 15 mo in the same animal model of CAD. Ten male swine were fed a HFD in the absence (HFD, n = 5) or presence of streptozotocin-induced DM (DM + HFD, n = 5). Responses of small (∼300-μm-diameter) coronary arteries to BK, ET-1, and the nitric oxide (NO) donor S-nitroso-N-acetylpenicillamine were examined in vitro and compared with those of healthy (Normal) swine (n = 12). Blood glucose was elevated in DM + HFD (17.6 ± 4.5 mmol/l) compared with HFD (5.1 ± 0.4 mmol/l) and Normal (5.8 ± 0.6 mmol/l) swine, while cholesterol was markedly elevated in DM + HFD (16.8 ± 1.7 mmol/l) and HFD (18.1 ± 2.6 mmol/l) compared with Normal (2.1 ± 0.2 mmol/l) swine (all P < 0.05). Small coronary arteries showed early atherosclerotic plaques in HFD and DM + HFD swine. Surprisingly, DM + HFD and HFD swine maintained BK responsiveness compared with Normal swine due to an increase in NO availability relative to endothelium-derived hyperpolarizing factors. However, ET-1 responsiveness was greater in HFD and DM + HFD than Normal swine (both P < 0.05), resulting mainly from ETB receptor-mediated vasoconstriction. Moreover, the calculated vascular stiffness coefficient was higher in DM + HFD and HFD than Normal swine (both P < 0.05). In conclusion, 15 mo of DM + HFD, as well as HFD alone, resulted in CMD. Although the overall vasodilation to BK was unperturbed, the relative contributions of NO and endothelium-derived hyperpolarizing factor pathways were altered. Moreover, the vasoconstrictor response to ET-1 was enhanced, involving the ETB receptors. In conjunction with our previous study, these findings highlight the time dependence of the phenotype of CMD.
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Affiliation(s)
- Oana Sorop
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands.,Netherlands Heart Institute, Utrecht, The Netherlands; and
| | - Mieke van den Heuvel
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Internal Medicine, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Nienke S van Ditzhuijzen
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Vincent J de Beer
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Ilkka Heinonen
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Richard W B van Duin
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Zhichao Zhou
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Sietse J Koopmans
- Livestock Research, Wageningen University and Research Center, Wageningen, The Netherlands
| | - Daphne Merkus
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Wim J van der Giessen
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands.,Netherlands Heart Institute, Utrecht, The Netherlands; and
| | - A H Jan Danser
- Department of Internal Medicine, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Dirk Jan Duncker
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Cardiovascular Research School COEUR, Erasmus University Medical Center, Rotterdam, The Netherlands;
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Liang SN, Xu K, Zhong HS. Establishment of Rabbit Abdominal Aortic Atherosclerosis Model by Pancreatic Elastase Infiltration Associated with High Fat Diet. ACTA CARDIOLOGICA SINICA 2015; 31:406-13. [PMID: 27122900 PMCID: PMC4804804 DOI: 10.6515/acs20141027c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND The aim of this study was to evaluate the feasibility of a high fat diet (HFD) associated with pancreatic elastase (PE) infiltration, in establishing the rabbit aortic atherosclerosis model. METHODS The HFD+PE method and the HFD+saccule injury (SI) method were simultaneously used to prepare the rabbit atherosclerosis model; the control group was established with the normal diet. Biochemical indicators, radiological imaging, pathomorphology and immunohistochemistry were used to evaluate the HFD+PE modeling results. RESULTS There were significant changes in the blood lipid contents, as well as the pathomorphological and immunohistochemical results between the two experimental groups and the control group (p < 0.05). However, there was no difference between the two experimental groups. The rabbit aortic atherosclerosis model prepared by the HFD+PE method had no significant difference in the local vascular pathomorphological and immunohistochemical results with the traditional HFD+SI method. CONCLUSIONS The use of HFD with PE infiltration is feasible in establishing the rabbit aortic atherosclerosis model. KEY WORDS Animal model; Atherosclerosis; Rabbit.
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Affiliation(s)
- Song-Nian Liang
- Department of Radiology, The First Affiliated Hospital of China Medical University
| | - Ke Xu
- Department of Radiology, The First Affiliated Hospital of China Medical University
| | - Hong-Shan Zhong
- The Key Laboratory of Imaging Diagnosis and Interventional Treatment of Liaoning Province, Shenyang, Liaoning Province 110001, P.R. China
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Early systemic microvascular damage in pigs with atherogenic diabetes mellitus coincides with renal angiopoietin dysbalance. PLoS One 2015; 10:e0121555. [PMID: 25909188 PMCID: PMC4409307 DOI: 10.1371/journal.pone.0121555] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 02/16/2015] [Indexed: 12/16/2022] Open
Abstract
Background Diabetes mellitus (DM) is associated with a range of microvascular complications including diabetic nephropathy (DN). Microvascular abnormalities in the kidneys are common histopathologic findings in DN, which represent one manifestation of ongoing systemic microvascular damage. Recently, sidestream dark-field (SDF) imaging has emerged as a noninvasive tool that enables one to visualize the microcirculation. In this study, we investigated whether changes in the systemic microvasculature induced by DM and an atherogenic diet correlated spatiotemporally with renal damage. Methods Atherosclerotic lesion development was triggered in streptozotocin-induced DM pigs (140 mg/kg body weight) by administering an atherogenic diet for approximately 11 months. Fifteen months following induction of DM, microvascular morphology was visualized in control pigs (n = 7), non-diabetic pigs fed an atherogenic diet (ATH, n = 5), and DM pigs fed an atherogenic diet (DM+ATH, n = 5) using SDF imaging of oral mucosal tissue. Subsequently, kidneys were harvested from anethesized pigs and the expression levels of well-established markers for microvascular integrity, such as Angiopoietin-1 (Angpt1) and Angiopoietin-2 (Angpt2) were determined immunohistochemically, while endothelial cell (EC) abundance was determined by immunostaining for von Willebrand factor (vWF). Results Our study revealed an increase in the capillary tortuosity index in DM+ATH pigs (2.31±0.17) as compared to the control groups (Controls 0.89±0.08 and ATH 1.55±0.11; p<0.05). Kidney biopsies showed marked glomerular lesions consisting of mesangial expansion and podocyte lesions. Furthermore, we observed a disturbed Angpt2/ Angpt1balance in the cortex of the kidney, as evidenced by increased expression of Angpt2 in DM+ATH pigs as compared to Control pigs (p<0.05). Conclusion In the setting of DM, atherogenesis leads to the augmentation of mucosal capillary tortuosity, indicative of systemic microvascular damage. Concomitantly, a dysbalance in renal angiopoietins was correlated with the development of diabetic nephropathy. As such, our studies strongly suggest that defects in the systemic microvasculature mirror the accumulation of microvascular damage in the kidney.
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van Ditzhuijzen NS, Karanasos A, Bruining N, van den Heuvel M, Sorop O, Ligthart J, Witberg K, Garcia-Garcia HM, Zijlstra F, Duncker DJ, van Beusekom HMM, Regar E. The impact of Fourier-Domain optical coherence tomography catheter induced motion artefacts on quantitative measurements of a PLLA-based bioresorbable scaffold. Int J Cardiovasc Imaging 2014; 30:1013-26. [DOI: 10.1007/s10554-014-0447-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 05/09/2014] [Indexed: 11/24/2022]
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Affiliation(s)
- E E van der Wall
- Interuniversity Cardiology Institute of the Netherlands (ICIN)-Netherlands Heart Institute (NHI), Utrecht, the Netherlands,
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11
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The immunologic injury composite with balloon injury leads to dyslipidemia: a robust rabbit model of human atherosclerosis and vulnerable plaque. J Biomed Biotechnol 2012; 2012:249129. [PMID: 22988422 PMCID: PMC3441062 DOI: 10.1155/2012/249129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 07/25/2012] [Accepted: 07/30/2012] [Indexed: 11/25/2022] Open
Abstract
Atherosclerosis is a condition in which a lipid deposition, thrombus formation, immune cell infiltration, and a chronic inflammatory response, but its systemic study has been hampered by the lack of suitable animal models, especially in herbalism fields. We have tried to perform a perfect animal model that completely replicates the stages of human atherosclerosis. This is the first combined study about the immunologic injury and balloon injury based on the cholesterol diet. In this study, we developed a modified protocol of the white rabbit model that could represent a novel approach to studying human atherosclerosis and vulnerable plaque.
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Döring Y, Noels H, Weber C. The Use of High-Throughput Technologies to Investigate Vascular Inflammation and Atherosclerosis. Arterioscler Thromb Vasc Biol 2012; 32:182-95. [DOI: 10.1161/atvbaha.111.232686] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The greatest challenge of scientific research is to understand the causes and consequences of disease. In recent years, great efforts have been devoted to unraveling the basic mechanisms of atherosclerosis (the underlying pathology of cardiovascular disease), which remains a major cause of morbidity and mortality worldwide. Because of the complex and multifactorial pathophysiology of cardiovascular disease, different research techniques have increasingly been combined to unravel genetic aspects, molecular pathways, and cellular functions involved in atherogenesis, vascular inflammation, and dyslipidemia to gain a multifaceted picture addressing this complexity. Thanks to the rapid evolution of high-throughput technologies, we are now able to generate large-scale data on the DNA, RNA, and protein levels. With the help of sophisticated computational tools, these data sets are integrated to enhance information extraction and are being increasingly used in a systems biology approach to model biological processes as interconnected and regulated networks. This review exemplifies the use of high-throughput technologies—such as genomics, transcriptomics, proteomics, and epigenomics—and systems biology to explore pathomechanisms of vascular inflammation and atherosclerosis.
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Affiliation(s)
- Yvonne Döring
- From the Institute for Cardiovascular Prevention, Ludwig-Maximilians-University Munich, Munich, Germany (Y.D., C.W.); Institute for Molecular Cardiovascular Research, Rheinisch-Westfälische Technische Hochschule Aachen University, University Clinic Aachen, Aachen, Germany (H.N.); Munich Heart Alliance, Munich, Germany (C.W.); Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands (C.W.)
| | - Heidi Noels
- From the Institute for Cardiovascular Prevention, Ludwig-Maximilians-University Munich, Munich, Germany (Y.D., C.W.); Institute for Molecular Cardiovascular Research, Rheinisch-Westfälische Technische Hochschule Aachen University, University Clinic Aachen, Aachen, Germany (H.N.); Munich Heart Alliance, Munich, Germany (C.W.); Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands (C.W.)
| | - Christian Weber
- From the Institute for Cardiovascular Prevention, Ludwig-Maximilians-University Munich, Munich, Germany (Y.D., C.W.); Institute for Molecular Cardiovascular Research, Rheinisch-Westfälische Technische Hochschule Aachen University, University Clinic Aachen, Aachen, Germany (H.N.); Munich Heart Alliance, Munich, Germany (C.W.); Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands (C.W.)
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