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Abulizi A, Simayi J, Nuermaimaiti M, Han M, Hailati S, Talihati Z, Maihemuti N, Nuer M, Khan N, Abudurousuli K, Dilimulati D, Nueraihemaiti N, Moore N, Zhou W, Wumaier A. Quince extract resists atherosclerosis in rats by down-regulating the EGFR/PI3K/Akt/GSK-3β pathway. Biomed Pharmacother 2023; 160:114330. [PMID: 36746094 DOI: 10.1016/j.biopha.2023.114330] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/20/2023] [Accepted: 01/27/2023] [Indexed: 02/05/2023] Open
Abstract
We identified the effective components and the underlying mechanisms of Quince (Cydonia oblonga Mill, COM) extract against atherosclerosis. The effective components of COM extract were identified with UHPLC-Q-TOF-MS/MS. Network pharmacology was performed. A rat model of atherosclerosis induced by high-fat emulsion combined with vitamin D3 was established. The anti-atherosclerosis effect of COM extract was evaluated from various aspects such as blood lipid regulation, anti-oxidative stress, anti-inflammatory response, and vascular protection function. We identified 14 serum components of COM extract using UHPLC-Q-TOF-MS/MS. Through prediction, 573 targets were obtained, among which 224 targets were atherosclerosis specific targets. The key targets included GSK3β, ESR1, EGFR, and HSP90AA1. The key signaling pathway was PI3K-Akt signaling pathway. Pharmacodynamics analysis showed that COM extract reduced the levels of TC, TG, and LDL-C as well as ALT and AST, while increased the level of HDL-C. Mechanistically, COM extract significantly increased serum SOD and GSH-Px activities, but decreased MDA content in atherosclerosis rats, showing antioxidant effects. Meanwhile, COM extract significantly down-regulated the levels of pro-inflammatory factors IL-1β, IL-6, TNF-α and CRP, but up-regulated anti-inflammatory factor IL-10. Additionally, COM extract increased the levels of NO, eNOS, and 6-keto-PGF1α; whereas, decreased the levels of ET-1 and TXB2. Furthermore, COM extract significantly inhibited the mRNA and protein levels of EGFR, p-PI3K, p-AKT, GSK-3β, Bax, and Caspase-3 as well as the Bax/Bcl-2 ratio. Conclusively, COM extract exerts hypolipidemic, anti-oxidative, anti-inflammatory, anti-thrombotic and vascular endothelium protective effects on atherosclerosis rat model, which may be related to the inhibition of EGFR/PI3K/AKT/GSK-3β signaling pathway.
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Affiliation(s)
- Abulaiti Abulizi
- Department of Pharmacology, Xinjiang Medical University, Urumqi 830011, China
| | - Jimilihan Simayi
- Department of Pharmacology, Xinjiang Medical University, Urumqi 830011, China
| | | | - Mengyuan Han
- Department of Pharmacology, Xinjiang Medical University, Urumqi 830011, China
| | - Sendaer Hailati
- Department of Pharmacology, Xinjiang Medical University, Urumqi 830011, China
| | - Ziruo Talihati
- Department of Pharmacology, Xinjiang Medical University, Urumqi 830011, China
| | - Nulibiya Maihemuti
- Department of Pharmacology, Xinjiang Medical University, Urumqi 830011, China
| | - Muhadaisi Nuer
- Department of Pharmacology, Xinjiang Medical University, Urumqi 830011, China
| | - Nawaz Khan
- Department of Pharmacology, Xinjiang Medical University, Urumqi 830011, China
| | | | - Dilihuma Dilimulati
- Department of Pharmacology, Xinjiang Medical University, Urumqi 830011, China
| | | | - Nicholas Moore
- Department of Pharmacology, University of Bordeaux, F-33076 Bordeaux, France
| | - Wenting Zhou
- Department of Pharmacology, Xinjiang Medical University, Urumqi 830011, China.
| | - Ainiwaer Wumaier
- Department of Pharmacology, Xinjiang Medical University, Urumqi 830011, China.
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Zhao Y, Zhang Q, Zhang X, Zhang Y, Lu Y, Ma X, Li W, Niu X, Zhang G, Chang M, Shi W, Tian Y. The roles of MMP8/MMP10 polymorphisms in ischemic stroke susceptibility. Brain Behav 2022; 12:e2797. [PMID: 36282475 PMCID: PMC9759140 DOI: 10.1002/brb3.2797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/30/2022] [Accepted: 10/09/2022] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Ischemic stroke (IS), a multifactorial and polygenic disease, is the most common cause of death. This study aimed to determine the roles of MMP8/MMP10 polymorphisms in IS susceptibility in the Chinese Han population. METHODS MMP8 rs1940475 and rs3765620, and MMP10 rs17860949 from 700 IS patients and 700 controls were genotyped by the MassARRAY iPLEX platform. The impact of polymorphisms on IS risk was evaluated by logistic regression analysis. RESULTS Our study indicated that rs17860949 in MMP10 was significantly associated with a reduced risk of IS (OR = 0.632, p = .002). Precisely, stratification analysis showed that rs17860949 was relate to a decreased susceptibility to IS in patients aged > 55 years (OR = 0.472, p < .001), males (OR = 0.632, p = .012), nonsmokers (OR = 0.610, p = .017), and nondrinkers (OR = 0.559, p = .006). All these significant findings were verified by false-positive report probability test. Furthermore, GG genotype and AG genotype in MMP8 rs3765620 polymorphism were related to a reduced triglycerides concentration (p = .018). CONCLUSION Our study suggests that rs17860949 in MMP10 may play a protective role in IS in the Chinese Han population.
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Affiliation(s)
- Yong Zhao
- Department of Neurology, Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No. 3 Hospital, the Affiliated Hospital of Northwest University, Xi'an, Shaanxi, China
| | - Qi Zhang
- The College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Xiaobo Zhang
- The College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Yu Zhang
- The College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Ying Lu
- Department of Neurology, Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No. 3 Hospital, the Affiliated Hospital of Northwest University, Xi'an, Shaanxi, China
| | - Xiaojuan Ma
- Medical Research Center, Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No. 3 Hospital, the Affiliated Hospital of Northwest University, Xi'an, Shaanxi, China
| | - Weiping Li
- The College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Xiaochen Niu
- The College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Gejuan Zhang
- Department of Neurology, Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No. 3 Hospital, the Affiliated Hospital of Northwest University, Xi'an, Shaanxi, China
| | - Mingze Chang
- Department of Neurology, Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No. 3 Hospital, the Affiliated Hospital of Northwest University, Xi'an, Shaanxi, China
| | - Wenzhen Shi
- Medical Research Center, Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No. 3 Hospital, the Affiliated Hospital of Northwest University, Xi'an, Shaanxi, China
| | - Ye Tian
- Department of Neurology, Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No. 3 Hospital, the Affiliated Hospital of Northwest University, Xi'an, Shaanxi, China
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3
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Zhang S, Liu Y, Cao Y, Zhang S, Sun J, Wang Y, Song S, Zhang H. Targeting the Microenvironment of Vulnerable Atherosclerotic Plaques: An Emerging Diagnosis and Therapy Strategy for Atherosclerosis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2110660. [PMID: 35238081 DOI: 10.1002/adma.202110660] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/10/2022] [Indexed: 06/14/2023]
Abstract
Atherosclerosis is considered one of the primary causes of cardiovascular diseases (CVDs). Unpredictable rupture of the vulnerable atherosclerotic plaques triggers adverse cardiovascular events such as acute myocardial syndrome and even sudden cardiac death. Therefore, assessing the vulnerability of atherosclerotic plaques and early intervention are of significance in reducing CVD mortality. Nanomedicine possesses tremendous advantages in achieving the integration of the diagnosis and therapy of atherosclerotic plaques because of its magnetic, optical, thermal, and catalytic properties. Based on the pathological characteristics of vulnerable plaques, stimuli-responsive nanoplatforms and surface-functionalized nanoagents are designed and have drawn great attention for accomplishing the precise imaging and treatment of vulnerable atherosclerotic plaques due to their superior properties, such as high bioavailability, lesion-targeting specificity, on-demand cargo release, and low off-target damage. Here, the characteristics of vulnerable plaques are generalized, and some targeted strategies for boosting the accuracy of plaque vulnerability evaluation by imaging and the efficacy of plaque stabilization therapy (including antioxidant therapy, macrophage depletion therapy, regulation of lipid metabolism therapy, anti-inflammation therapy, etc.) are systematically summarized. In addition, existing challenges and prospects in this field are discussed, and it is believed to provide new thinking for the diagnosis and treatment of CVDs in the near future.
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Affiliation(s)
- Shuai Zhang
- Department of Cardiovascular Center, The First Hospital of Jilin University, 71 Xinmin Street, Changchun, Jilin, 130021, China
| | - Yang Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yue Cao
- Department of Neurosurgery, The First Hospital of Jilin University, 71 Ximin Street, Changchun, Jilin, 130021, China
| | - Songtao Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
| | - Jian Sun
- Department of Cardiovascular Center, The First Hospital of Jilin University, 71 Xinmin Street, Changchun, Jilin, 130021, China
| | - Yinghui Wang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
| | - Shuyan Song
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Hongjie Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
- Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
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4
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Fan D, Zheng C, Wu W, Chen Y, Chen D, Hu X, Shen C, Chen M, Li R, Chen Y. MMP9 SNP and MMP SNP-SNP interactions increase the risk for ischemic stroke in the Han Hakka population. Brain Behav 2022; 12:e2473. [PMID: 34984852 PMCID: PMC8865147 DOI: 10.1002/brb3.2473] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/06/2021] [Accepted: 12/13/2021] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVES To investigate the association of eight variants of four matrix metalloproteinase (MMP) genes with ischemic stroke (IS) and whether interactions among these single nucleotide polymorphisms (SNPs) increases the risk of IS. METHODS Among 547 patients with ischemic stroke and 350 controls, matrix-assisted laser desorption/ionization time of flight mass spectrometry was used to examine eight variants arising from four different genes, including MMP-1 (rs1799750), MMP-2 (rs243865, rs2285053, rs2241145), MMP-9 (rs17576), and MMP-12 (rs660599, rs2276109, and rs652438). Gene-gene interactions were employed using generalized multifactor dimensionality reduction (GMDR) methods. RESULTS The frequency of rs17576 was significantly higher in IS patients than in controls (p = .033). Logistic regression analysis revealed the AG and GG genotypes of rs17576 to be associated with a higher risk for IS, with the odds ratio and 95% confidence interval being 2.490 (1.251-4.959) and 2.494 (1.274-4.886), respectively. GMDR analysis showed a significant SNP-SNP interaction between rs17576 and rs660599 (the testing balanced accuracy was 53.70% and cross-validation consistency was 8/10, p = .0107). Logistic regression analysis showed the interaction between rs17576 and rs660599 to be an independent risk factor for IS with an odds ratio of 1.568 and a 95% confidence interval of 1.152-2.135. CONCLUSION An MMP-9 rs17576 polymorphism is associated with increased IS risk in the Han Hakka population and interaction between MMP-9 rs17576 and MMP-12 rs660599 is associated with increased IS risk as well.
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Affiliation(s)
- Daofeng Fan
- Department of Neurology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fijian, China
| | - Chong Zheng
- Department of Neurology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fijian, China
| | - Wenbao Wu
- Department of Acupuncture and Moxibustion, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fijian, China
| | - Yinjuan Chen
- Department of Neurology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fijian, China
| | - Dongping Chen
- Department of Neurology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fijian, China
| | - Xiaohong Hu
- Department of Neurology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fijian, China
| | - Chaoxiong Shen
- Department of Neurology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fijian, China
| | - Mingsheng Chen
- Department of Neurology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fijian, China
| | - Rongtong Li
- Department of Neurology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fijian, China
| | - Yangui Chen
- Department of Neurology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fijian, China
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5
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Chen J, Su Y, Pi S, Hu B, Mao L. The Dual Role of Low-Density Lipoprotein Receptor-Related Protein 1 in Atherosclerosis. Front Cardiovasc Med 2021; 8:682389. [PMID: 34124208 PMCID: PMC8192809 DOI: 10.3389/fcvm.2021.682389] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 05/05/2021] [Indexed: 12/26/2022] Open
Abstract
Low-density lipoprotein receptor–related protein-1 (LRP1) is a large endocytic and signaling receptor belonging to the LDL receptor (LDLR) gene family and that is widely expressed in several tissues. LRP1 comprises a large extracellular domain (ECD; 515 kDa, α chain) and a small intracellular domain (ICD; 85 kDa, β chain). The deletion of LRP1 leads to embryonic lethality in mice, revealing a crucial but yet undefined role in embryogenesis and development. LRP1 has been postulated to participate in numerous diverse physiological and pathological processes ranging from plasma lipoprotein homeostasis, atherosclerosis, tumor evolution, and fibrinolysis to neuronal regeneration and survival. Many studies using cultured cells and in vivo animal models have revealed the important roles of LRP1 in vascular remodeling, foam cell biology, inflammation and atherosclerosis. However, its role in atherosclerosis remains controversial. LRP1 not only participates in the removal of atherogenic lipoproteins and proatherogenic ligands in the liver but also mediates the uptake of aggregated LDL to promote the formation of macrophage- and vascular smooth muscle cell (VSMC)-derived foam cells, which causes a prothrombotic transformation of the vascular wall. The dual and opposing roles of LRP1 may also represent an interesting target for atherosclerosis therapeutics. This review highlights the influence of LRP1 during atherosclerosis development, focusing on its dual role in vascular cells and immune cells.
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Affiliation(s)
- Jiefang Chen
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Su
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Shulan Pi
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Bo Hu
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Ling Mao
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
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6
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Maruf A, Wang Y, Yin T, Huang J, Wang N, Durkan C, Tan Y, Wu W, Wang G. Atherosclerosis Treatment with Stimuli-Responsive Nanoagents: Recent Advances and Future Perspectives. Adv Healthc Mater 2019; 8:e1900036. [PMID: 30945462 DOI: 10.1002/adhm.201900036] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/06/2019] [Indexed: 01/04/2023]
Abstract
Atherosclerosis is the root of approximately one-third of global mortalities. Nanotechnology exhibits splendid prospects to combat atherosclerosis at the molecular level by engineering smart nanoagents with versatile functionalizations. Significant advances in nanoengineering enable nanoagents to autonomously navigate in the bloodstream, escape from biological barriers, and assemble with their nanocohort at the targeted lesion. The assembly of nanoagents with endogenous and exogenous stimuli breaks down their shells, facilitates intracellular delivery, releases their cargo to kill the corrupt cells, and gives imaging reports. All these improvements pave the way toward personalized medicine for atherosclerosis. This review systematically summarizes the recent advances in stimuli-responsive nanoagents for atherosclerosis management and its progress in clinical trials.
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Affiliation(s)
- Ali Maruf
- Key Laboratory for Biorheological Science and Technology of Ministry of EducationState and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing University Chongqing 400030 China
| | - Yi Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of EducationState and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing University Chongqing 400030 China
| | - Tieyin Yin
- Key Laboratory for Biorheological Science and Technology of Ministry of EducationState and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing University Chongqing 400030 China
| | - Junli Huang
- Key Laboratory for Biorheological Science and Technology of Ministry of EducationState and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing University Chongqing 400030 China
| | - Nan Wang
- The Nanoscience CentreUniversity of Cambridge Cambridge CB3 0FF UK
| | - Colm Durkan
- The Nanoscience CentreUniversity of Cambridge Cambridge CB3 0FF UK
| | - Youhua Tan
- Department of Biomedical EngineeringThe Hong Kong Polytechnic University Hong Kong SAR 999077 China
| | - Wei Wu
- Key Laboratory for Biorheological Science and Technology of Ministry of EducationState and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing University Chongqing 400030 China
| | - Guixue Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of EducationState and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing University Chongqing 400030 China
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7
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Holm Nielsen S, Tengryd C, Edsfeldt A, Brix S, Genovese F, Bengtsson E, Karsdal M, Leeming DJ, Nilsson J, Goncalves I. A biomarker of collagen type I degradation is associated with cardiovascular events and mortality in patients with atherosclerosis. J Intern Med 2019; 285:118-123. [PMID: 30156050 DOI: 10.1111/joim.12819] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Atherosclerosis is characterized by accumulation of lipids, cells and extracellular matrix (ECM) proteins in the arterial wall. Collagen type I (COL1), a component of the arterial ECM, is cleaved by matrix metalloproteinases (MMPs) and known to be remodelled in atherosclerosis. We explored whether the MMP-mediated COL1 biomarker, C1M, was associated with cardiovascular events, cardiovascular mortality and all-cause mortality in a large prospective cohort of patients with known atherosclerosis. METHODS Serum from 787 patients who underwent a carotid endarterectomy was included. Circulating levels of C1M were measured in serum. A total of 473 patients were followed for 6 years after surgery. Associations between C1M and incidence of cardiovascular events, cardiovascular mortality and all-cause mortality were assessed by Kaplan-Meier curves and Cox regression analysis. RESULTS A total of 101 (21.4%) patients suffered from nonfatal cardiovascular events during the follow-up period, and 64 (13.5%) patients died. Of these, 39 (60.9%) died from cardiovascular diseases. Patients with C1M levels above the median were significantly associated with cardiovascular events, cardiovascular mortality and all-cause mortality (P < 0.001, P = 0.004 and P < 0.001, respectively). C1M was included in the final model for prediction of cardiovascular events (HR 2.15, 95% CI 1.40-3.32, P = 0.001), cardiovascular mortality (HR 2.20, 95% CI 1.07-4.51, P = 0.031) and all-cause mortality (HR 2.98 95% CI 1.67-5.33, P = < 0.001). CONCLUSIONS In patients with atherosclerotic carotid lesions, high levels of C1M predicted cardiovascular events, cardiovascular mortality and all-cause mortality. These findings emphasize the importance of remodelling mechanisms in atherosclerosis that are now becoming more and more explored.
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Affiliation(s)
- S Holm Nielsen
- Nordic Bioscience, Herlev, Denmark.,Technical University of Denmark, Kgs. Lyngby, Denmark
| | - C Tengryd
- Experimental Cardiovascular Research Unit, Lund University, Malmö, Sweden
| | - A Edsfeldt
- Experimental Cardiovascular Research Unit, Lund University, Malmö, Sweden.,Department of Cardiology, Skåne University Hospital, Malmö, Sweden
| | - S Brix
- Technical University of Denmark, Kgs. Lyngby, Denmark
| | | | - E Bengtsson
- Experimental Cardiovascular Research Unit, Lund University, Malmö, Sweden
| | | | | | - J Nilsson
- Experimental Cardiovascular Research Unit, Lund University, Malmö, Sweden
| | - I Goncalves
- Experimental Cardiovascular Research Unit, Lund University, Malmö, Sweden.,Department of Cardiology, Skåne University Hospital, Malmö, Sweden
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8
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Benito-Alifonso D, Richichi B, Baldoneschi V, Berry M, Fragai M, Salerno G, Galan MC, Nativi C. Quantum Dot-Based Probes for Labeling and Imaging of Cells that Express Matrix Metalloproteinases. ACS OMEGA 2018; 3:9822-9826. [PMID: 30198003 PMCID: PMC6120729 DOI: 10.1021/acsomega.8b00633] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 06/21/2018] [Indexed: 05/16/2023]
Abstract
The practical synthesis of novel multivalent fluorescent quantum-dot-based probes to target cellular matrix metalloproteinases (MMPs) (MT-MMPs) is reported. We show that these probes, which are decorated with a nanomolar water-soluble MMP inhibitor, can be used to label preferentially the surface of cancer cells that are known to express MMPs while no binding was observed on cells that do not.
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Affiliation(s)
| | - Barbara Richichi
- Department
of Chemistry, University of Florence, via della Lastruccia, 3-13, Sesto Fiorentino, Florence 50019, Italy
| | - Veronica Baldoneschi
- Department
of Chemistry, University of Florence, via della Lastruccia, 3-13, Sesto Fiorentino, Florence 50019, Italy
| | - Monica Berry
- School
of Chemistry, University of Bristol, Cantock’s Close, BS8 1TS Bristol, U.K.
| | - Marco Fragai
- Department
of Chemistry, University of Florence, via della Lastruccia, 3-13, Sesto Fiorentino, Florence 50019, Italy
- CeRM, University
of Florence, via L. Sacconi,
6, Sesto Fiorentino, Florence 50019, Italy
| | - Gianluca Salerno
- Department
of Chemistry, University of Florence, via della Lastruccia, 3-13, Sesto Fiorentino, Florence 50019, Italy
| | - M. Carmen Galan
- School
of Chemistry, University of Bristol, Cantock’s Close, BS8 1TS Bristol, U.K.
- E-mail: . Phone: +44(0)1179287654 (M.C.G.)
| | - Cristina Nativi
- Department
of Chemistry, University of Florence, via della Lastruccia, 3-13, Sesto Fiorentino, Florence 50019, Italy
- CeRM, University
of Florence, via L. Sacconi,
6, Sesto Fiorentino, Florence 50019, Italy
- E-mail: . Phone: +39-0554573540 (C.N.)
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9
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Matrix Metalloproteinase Mediated Type I Collagen Degradation is an Independent Predictor of Increased Risk of Acute Myocardial Infarction in Postmenopausal Women. Sci Rep 2018; 8:5371. [PMID: 29599489 PMCID: PMC5876321 DOI: 10.1038/s41598-018-23458-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 03/08/2018] [Indexed: 12/23/2022] Open
Abstract
Acute myocardial infarction (AMI) is often underdiagnosed in women. It is therefore of interest to identify biomarkers that indicate increased risk of AMI and thereby help clinicians to have additional focus on the difficult AMI diagnosis. Type I Collagen, a component of the cardiac extracellular matrix, is cleaved by matrix metalloproteinases (MMPs) generating the neo-epitope C1M. We investigated the association between serum-C1M and AMI and evaluated whether C1M is a prognostic marker for outcome following AMI. This study is based on The Prospective Epidemiological Risk Factor (PERF) Study including postmenopausal women. 316 out of 5,450 women developed AMI within the follow-up period (14 years, median). A multivariate Cox analysis assessed association between serum-C1M and AMI, and re-infaction or death subsequent to AMI. The risk of AMI increased by 18% (p = 0.03) when serum-C1M was doubled and women in the highest quartile had a 33% increased risk compared to those in the low quartiles (p = 0.025). Serum-C1M was, however not related to reinfarction or death subsequent to AMI. In this study C1M was be an independent risk factor for AMI. Measuring MMP degraded type I collagen could be useful for prediction of increased risk of AMI if replicated in other cohorts.
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10
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Hu C, Zhu K, Li J, Wang C, Lai L. Molecular targets in aortic aneurysm for establishing novel management paradigms. J Thorac Dis 2017; 9:4708-4722. [PMID: 29268541 DOI: 10.21037/jtd.2017.10.63] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Aortic aneurysm (AA) is a lethal disease and presents a large challenge for surgeons in the clinic. Although surgical management remains the major choice of AA, operative mortality remains high. With advances in understanding of the mechanisms of AAs, molecular targets, such as matrix metalloproteinases (MMPs), D-dimer, and inflammation markers, including C-reactive protein, interleukins and phagocytes, are important in the pathology of development of AA. These markers may become important for improving the diagnostic quality and provide more therapeutic choices for treatment of AA. Although these new markers require long-term trials before they can be translated into the clinic, they can still be helpful in determining new directions. The main aim of this review is to discuss the current findings of molecular targets in progression of AA and discuss the potential application of these new targets for managing this disease.
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Affiliation(s)
- Chengkai Hu
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.,Shanghai Institute of Cardiovascular Disease, Shanghai 200032, China
| | - Kai Zhu
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.,Shanghai Institute of Cardiovascular Disease, Shanghai 200032, China
| | - Jun Li
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.,Shanghai Institute of Cardiovascular Disease, Shanghai 200032, China
| | - Chunsheng Wang
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.,Shanghai Institute of Cardiovascular Disease, Shanghai 200032, China
| | - Lao Lai
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.,Shanghai Institute of Cardiovascular Disease, Shanghai 200032, China
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Yao Y, Li B, Fu C, Teng G, Ma G, Liu N. Anti-connective tissue growth factor detects and reduces plaque inflammation in early-stage carotid atherosclerotic lesions. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:2385-2394. [PMID: 28782610 DOI: 10.1016/j.nano.2017.07.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 06/10/2017] [Accepted: 07/24/2017] [Indexed: 01/18/2023]
Abstract
This study explored connective tissue growth factor (CTGF)-targeted ultrasmall superparamagnetic iron oxides (USPIOs) for noninvasive MRI of CTGF within carotid atherosclerotic lesions in apoE-deficient (apoE-/-) mice. Anti-CTGF polyclonal and nonspecific IgG antibodies were conjugated to polyethylene glycol-coated USPIOs, and apoE-/- carotid partial ligation-model mice were imaged via MRI before and after contrast administration. ApoE-/- mice were treated with CTGF-neutralizing antibodies for 3 weeks. Carotid artery diameter and plaque volume were measured via MRI in IgG and CTGF antibody-treated groups. Anti-CTGF-USPIO-treated macrophages showed the greatest iron uptake. MRI signal loss was observed in carotid atherosclerotic lesions 24 h after anti-CTGF-USPIO administration, consistent with the presence of nanoparticles, as indicated by pathological examinations. Atheromata in anti-CTGF-treated mice showed reduced macrophage deposition, CTGF expression, and plaque volume. Anti-CTGF-USPIOs can be used for the direct detection of CTGF and imaging of atherosclerotic lesions in vivo. CTGF is a potential therapeutic target for treating atherosclerosis.
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Affiliation(s)
- Yuyu Yao
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu 210009, China.
| | - Bing Li
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu 210009, China
| | - Cong Fu
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu 210009, China
| | - Gaojun Teng
- Jiangsu Key Lab of Molecular and Function Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - Genshan Ma
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu 210009, China
| | - Naifeng Liu
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu 210009, China
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12
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Lekic A, Brekalo Z, Kvesic A, Kovacevic M, Baricev-Novakovic Z, Sutic I, Bulog A, Sutic I, Pavisic V, Mrakovcic-Sutic I. Crosstalk Between Enzyme Matrix Metalloproteinases 2 and 9 and Regulatory T Cell Immunity in the Global Burden of Atherosclerosis. Scand J Immunol 2017; 86:65-71. [PMID: 28500763 DOI: 10.1111/sji.12563] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 04/30/2017] [Indexed: 01/14/2023]
Abstract
Changes in immune and inflammatory responses may play a crucial role in the development and progression of atherosclerosis, as an autoimmune, chronic and progressive inflammatory disease. Immunological activity and vascular inflammation during atherosclerosis can be modulated by autoimmune responses against self-antigens, according to changeable risk factors (cholesterol, oxidized low-density lipoprotein (ox-LDL) in the vascular wall, fatty acids, etc.), and accompanied by accumulation of leucocytes and proinflammatory cytokines, which stimulate the transcription of matrix metalloproteinases (MMPs), whose concentration are increased in foam cell-rich regions. Regulatory T cells (Tregs) represent a unique subpopulation of T cells specialized in the regulation of immune response and in the suppression of proatherogenic T cells. The aim of our study was to examine the interactions between the concentration of enzyme matrix metalloproteinases 2 and 9 (MMP-2 and 9) in urine and the percentage of Tregs in peripheral blood of two groups of patients: with carotid artery stenosis (CAS), undergoing surgery and with mild atherosclerosis (A) from general practice. The method of enzyme immunoassay (ELISA) was used to determine enzyme MMP expression, and Tregs was examined by flow cytometric analysis. Our data have showed a large increase in the enzyme MMP-2 and 9 in the urine of CAS and A patients in comparison with healthy controls and indicated this method as an easy marker for the monitoring of the development of atherosclerosis. Simultaneously, the diminished number of Tregs in the same patients pointed the importance of these regulatory mechanisms in the etiopathogenesis of atherosclerosis and possible Tregs-mediated therapy.
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Affiliation(s)
- A Lekic
- Department of Basic Medical Sciences, Faculty of Health Studies, University of Rijeka, Rijeka, Croatia
| | - Z Brekalo
- Department of Surgery, University Hospital Mostar, Mostar, Bosnia and Herzegovina
| | - A Kvesic
- Department of Surgery, University Hospital Mostar, Mostar, Bosnia and Herzegovina
| | - M Kovacevic
- Department of Cardiovascular Surgery, Medical Faculty, University of Rijeka, Rijeka, Croatia
| | - Z Baricev-Novakovic
- Department of Family Medicine, Medical Faculty, University of Rijeka, Rijeka, Croatia
| | - I Sutic
- Department of Family Medicine, Medical Faculty, University of Rijeka, Rijeka, Croatia
| | - A Bulog
- Department of Public Health, Medical Faculty, University of Rijeka, Rijeka, Croatia
| | - I Sutic
- Medical Faculty, University of Rijeka, Rijeka, Croatia
| | - V Pavisic
- Department of Physiology and Immunology, Medical Faculty, University of Rijeka, Rijeka, Croatia
| | - I Mrakovcic-Sutic
- Department of Physiology and Immunology, Medical Faculty, University of Rijeka, Rijeka, Croatia
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Breyholz HJ, Kopka K, Schäfers M, Wagner S. Syntheses of Radioiodinated Pyrimidine-2,4,6-Triones as Potential Agents for Non-Invasive Imaging of Matrix Metalloproteinases. Pharmaceuticals (Basel) 2017; 10:ph10020049. [PMID: 28556793 PMCID: PMC5490406 DOI: 10.3390/ph10020049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 05/24/2017] [Accepted: 05/28/2017] [Indexed: 11/16/2022] Open
Abstract
Dysregulated expression or activation of matrix metalloproteinases (MMPs) is observed in many kinds of live-threatening diseases. Therefore, MMP imaging for example with radiolabelled MMP inhibitors (MMPIs) potentially represents a valuable tool for clinical diagnostics using non-invasive single photon emission computed tomography (SPECT) or positron emission tomography (PET) imaging. This work includes the organic chemical syntheses and in vitro evaluation of five iodinated barbiturate based MMPIs and the selection of derivative 9 for radiosyntheses of isotopologues [123I]9 potentially useful for MMP SPECT imaging and [124I]9 for MMP PET imaging.
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Affiliation(s)
- Hans-Jörg Breyholz
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Building A1, D-48149 Münster, Germany.
| | - Klaus Kopka
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, D-69120 Heidelberg, Germany.
| | - Michael Schäfers
- European Institute for Molecular Imaging (EIMI), University of Münster, Waldeyerstraße 15, D-48149 Münster, Germany.
| | - Stefan Wagner
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Building A1, D-48149 Münster, Germany.
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Ziziphus nummularia Inhibits Inflammation-Induced Atherogenic Phenotype of Human Aortic Smooth Muscle Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:4134093. [PMID: 28593025 PMCID: PMC5448155 DOI: 10.1155/2017/4134093] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 04/02/2017] [Indexed: 11/17/2022]
Abstract
Cardiovascular disease (CVD) continues to be the leading cause of death worldwide. Atherosclerosis is a CVD characterized by plaque formation resulting from inflammation-induced insults to endothelial cells, monocytes, and vascular smooth muscle cells (VSMCs). Despite significant advances, current treatments for atherosclerosis remain insufficient, prompting the search for alternative modalities, including herbal medicine. Ziziphus nummularia is an herb commonly used in the amelioration of symptoms associated with many health conditions such as cold, diarrhea, cancer, and diabetes. However, its effect on the inflammation-induced behavior of VSMCs remains unknown. In this study, we sought to determine the effect of the ethanolic extract of Z. nummularia (ZNE) on TNF-α-induced phenotypic changes of human aortic smooth muscle cells (HASMCs). The treatment of HASMCs with ZNE decreased cell proliferation, adhesion to fibronectin, migration, and invasion. ZNE treatment also caused a concentration- and time-dependent reduction in the TNF-α-induced expression of matrix metalloproteases MMP-2 and MMP-9, NF-κB, and cell adhesion molecules ICAM-1 and VCAM-1. Furthermore, ZNE decreased the adhesion of THP-1 monocytes to HASMCs and endothelial cells in a concentration-dependent manner. These data provide evidence for the anti-inflammatory effect of Ziziphus nummularia, along with potential implications for its use as an agent that could ameliorate inflammation-induced atherogenic phenotype of VSMCs in atherosclerosis.
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Schwenck J, Maier FC, Kneilling M, Wiehr S, Fuchs K. Non-invasive In Vivo Fluorescence Optical Imaging of Inflammatory MMP Activity Using an Activatable Fluorescent Imaging Agent. J Vis Exp 2017. [PMID: 28518078 DOI: 10.3791/55180] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
This paper describes a non-invasive method for imaging matrix metalloproteinases (MMP)-activity by an activatable fluorescent probe, via in vivo fluorescence optical imaging (OI), in two different mouse models of inflammation: a rheumatoid arthritis (RA) and a contact hypersensitivity reaction (CHR) model. Light with a wavelength in the near infrared (NIR) window (650 - 950 nm) allows a deeper tissue penetration and minimal signal absorption compared to wavelengths below 650 nm. The major advantages using fluorescence OI is that it is cheap, fast and easy to implement in different animal models. Activatable fluorescent probes are optically silent in their inactivated states, but become highly fluorescent when activated by a protease. Activated MMPs lead to tissue destruction and play an important role for disease progression in delayed-type hypersensitivity reactions (DTHRs) such as RA and CHR. Furthermore, MMPs are the key proteases for cartilage and bone degradation and are induced by macrophages, fibroblasts and chondrocytes in response to pro-inflammatory cytokines. Here we use a probe that is activated by the key MMPs like MMP-2, -3, -9 and -13 and describe an imaging protocol for near infrared fluorescence OI of MMP activity in RA and control mice 6 days after disease induction as well as in mice with acute (1x challenge) and chronic (5x challenge) CHR on the right ear compared to healthy ears.
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Affiliation(s)
- Johannes Schwenck
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen; Department of Nuclear Medicine, Eberhard Karls University of Tübingen
| | - Florian C Maier
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen
| | - Manfred Kneilling
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen; Department of Dermatology, Eberhard Karls University of Tübingen
| | - Stefan Wiehr
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen
| | - Kerstin Fuchs
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen;
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16
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Cardiovascular PET/MRI: Initial Clinical Experience. CURRENT CARDIOVASCULAR IMAGING REPORTS 2016. [DOI: 10.1007/s12410-016-9392-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Qin H, Zhao Y, Zhang J, Pan X, Yang S, Xing D. Inflammation-targeted gold nanorods for intravascular photoacoustic imaging detection of matrix metalloproteinase-2 (MMP 2 ) in atherosclerotic plaques. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:1765-1774. [DOI: 10.1016/j.nano.2016.02.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 01/25/2016] [Accepted: 02/14/2016] [Indexed: 12/29/2022]
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18
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Hugenberg V, Hermann S, Galla F, Schäfers M, Wünsch B, Kolb HC, Szardenings K, Lebedev A, Walsh JC, Mocharla VP, Gangadharmath UB, Kopka K, Wagner S. Radiolabeled hydroxamate-based matrix metalloproteinase inhibitors: How chemical modifications affect pharmacokinetics and metabolic stability. Nucl Med Biol 2016; 43:424-37. [PMID: 27179748 DOI: 10.1016/j.nucmedbio.2016.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/04/2016] [Accepted: 03/15/2016] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Dysregulated MMP expression or activation is associated with several diseases. To study MMP activity in vivo by means of PET a radiolabeled MMP inhibitor (MMPI) functioning as radiotracer has been developed by our group based on the lead structure CGS 25966. MATERIALS AND METHODS Aiming at the modification of the pharmacokinetics of this lipophilic model tracer a new class of MMPIs has been discovered, consisting of additional fluorinated hydrophilic substructures, such as mini-PEG and/or 1,2,3-triazole units. To identify the best candidate for further clinical applications, radiofluorinated compounds of each subgroup have been (radio) synthesized and evaluated regarding their biodistribution behavior and their metabolic stability. RESULTS Radiosyntheses of different triazole based MMPIs could be realized using two step "click chemistry" procedures. Compared to lead structure [(18)F]FEtO-CGS 25966 ([(18)F]1e, log D(exp) =2.02, IC50=2-50nM) all selected candidates showed increased hydrophilicities and inhibition potencies (log D(exp) =0.23-1.25, IC50=0.006-6nM). Interestingly, despite different hydrophilicities most triazole based MMPIs showed no significant differences in their in vivo biodistribution behavior and were cleared predominantly via the hepatobiliary excretion route. Biostability and metabolism studies in vitro and in vivo revealed significant higher metabolic stability for the triazole moiety compared to the benzyl ring in the lead structure. Cleavage of ethylene glycol subunits of the mini-PEG chain led to a faster metabolism of mini-PEG containing MMPIs. CONCLUSION The introduction of hydrophilic groups such as mini-PEG and 1,2,3-triazole units did not lead to a significant shift of the hepatobiliary elimination towards renal clearance. Particularly the introduction of mini-PEG chains led to an intense metabolic decomposition. Substitution of the benzyl moiety in lead structure 1e by a 1,2,3-trizole ring resulted in an increased metabolic stability. Therefore, the 1,2,3-triazole-1-yl-methyl substituted MMPI [(18)F]3a was found to be the most stable candidate in this series and should be chosen for further preclinical evaluation.
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Affiliation(s)
- Verena Hugenberg
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Building A1, D-48149, Münster, Germany; European Institute for Molecular Imaging, University of Münster, Waldeyerstraße 15, D-48149, Münster, Germany.
| | - Sven Hermann
- European Institute for Molecular Imaging, University of Münster, Waldeyerstraße 15, D-48149, Münster, Germany; DFG EXC 1003 Cluster of Excellence 'Cells in Motion', University of Münster, Münster, Germany
| | - Fabian Galla
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Corrensstraße 48, D-48149, Münster, Germany
| | - Michael Schäfers
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Building A1, D-48149, Münster, Germany; European Institute for Molecular Imaging, University of Münster, Waldeyerstraße 15, D-48149, Münster, Germany; DFG EXC 1003 Cluster of Excellence 'Cells in Motion', University of Münster, Münster, Germany
| | - Bernhard Wünsch
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Corrensstraße 48, D-48149, Münster, Germany
| | - Hartmuth C Kolb
- Siemens Medical Solutions USA, Inc., 6140 Bristol Parkway, Culver City, CA, 90230, USA
| | - Katrin Szardenings
- Siemens Medical Solutions USA, Inc., 6140 Bristol Parkway, Culver City, CA, 90230, USA
| | - Artem Lebedev
- Siemens Medical Solutions USA, Inc., 6140 Bristol Parkway, Culver City, CA, 90230, USA
| | - Joseph C Walsh
- Siemens Medical Solutions USA, Inc., 6140 Bristol Parkway, Culver City, CA, 90230, USA
| | - Vani P Mocharla
- Siemens Medical Solutions USA, Inc., 6140 Bristol Parkway, Culver City, CA, 90230, USA
| | - Umesh B Gangadharmath
- Siemens Medical Solutions USA, Inc., 6140 Bristol Parkway, Culver City, CA, 90230, USA
| | - Klaus Kopka
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Building A1, D-48149, Münster, Germany
| | - Stefan Wagner
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Building A1, D-48149, Münster, Germany
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19
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Beutel B, Daniliuc CG, Riemann B, Schäfers M, Haufe G. Fluorinated matrix metalloproteinases inhibitors--Phosphonate based potential probes for positron emission tomography. Bioorg Med Chem 2016; 24:902-9. [PMID: 26810711 DOI: 10.1016/j.bmc.2016.01.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 01/06/2016] [Accepted: 01/08/2016] [Indexed: 10/22/2022]
Abstract
Fluorine-containing inhibitors of matrix metalloproteinases (MMPs) can serve as lead structures for the development of (18)F-labeled radioligands. These compounds might be useful as non-invasive imaging probes to characterize pathologies associated with increased MMP activity. Results with a series of fluorinated analogs of a known biphenyl sulfonamide inhibitor have shown that fluorine can be incorporated into two different positions of the molecular scaffold without significant loss of potency in the nanomolar range. Additionally, the potential of a hitherto unknown fluorinated tertiary sulfonamide as MMP inhibitor has been demonstrated.
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Affiliation(s)
- Bernd Beutel
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstr. 40, 48149 Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstr. 40, 48149 Münster, Germany
| | - Burkhard Riemann
- Klinik für Nuklearmedizin, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Michael Schäfers
- Klinik für Nuklearmedizin, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany; European Institute for Molecular Imaging, Westfälische Wilhelms-Universität, Waldeyerstr. 15, 48149 Münster, Germany
| | - Günter Haufe
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstr. 40, 48149 Münster, Germany; European Institute for Molecular Imaging, Westfälische Wilhelms-Universität, Waldeyerstr. 15, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence, Westfälische Wilhelms-Universität, Waldeyerstr. 15, 48149 Münster, Germany.
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20
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Schwenck J, Griessinger CM, Fuchs K, Bukala D, Bauer N, Eichner M, Röcken M, Pichler BJ, Kneilling M. In vivo optical imaging of matrix metalloproteinase activity detects acute and chronic contact hypersensitivity reactions and enables monitoring of the antiinflammatory effects of N-acetylcysteine. Mol Imaging 2015; 13. [PMID: 25430819 DOI: 10.2310/7290.2014.00044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The aim of this study was to determine whether the severity of contact hypersensitivity reactions (CHSRs) can be observed by noninvasive in vivo optical imaging of matrix metalloproteinase (MMP) activity and whether this is an appropriate tool for monitoring an antiinflammatory effect. Acute and chronic CHSRs were elicited by application of a 1% trinitrochlorobenzene (TNCB) solution for up to five times on the right ear of TNCB-sensitized mice. N-Acetylcysteine (NAC)-treated and sham-treated mice were monitored by measuring ear swelling and optical imaging of MMP activity. In addition, we performed hematoxylin-eosin staining and CD31 immunohistochemistry for histopathologic analysis of the antiinflammatory effects of NAC. The ear thickness and the MMP activity increased in line with the increasing severity of the CHSR. MMP activity was enhanced 2.5- to 2.7-fold during acute CHSR and 3.1- to 4.1-fold during chronic CHSR. NAC suppressed ear swelling and MMP signal intensity in mice with acute and chronic CHSR. During chronic CHSR, the vessel density was significantly reduced in ear sections derived from NAC-treated compared to sham-treated mice. In vivo optical imaging of MMP activity measures acute and chronic CHSR and is useful to monitor antiinflammatory effects.
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21
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Endometrial gene expression profile of pregnant sows with extreme phenotypes for reproductive efficiency. Sci Rep 2015; 5:14416. [PMID: 26435523 PMCID: PMC5155628 DOI: 10.1038/srep14416] [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: 04/27/2015] [Accepted: 08/19/2015] [Indexed: 12/22/2022] Open
Abstract
Prolificacy can directly impact porcine profitability, but large genetic variation and low heritability have been found regarding litter size among porcine breeds. To identify key differences in gene expression associated to swine reproductive efficiency, we performed a transcriptome analysis of sows' endometrium from an Iberian x Meishan F2 population at day 30-32 of gestation, classified according to their estimated breeding value (EBV) as high (H, EBV > 0) and low (L, EBV < 0) prolificacy phenotypes. For each sample, mRNA and small RNA libraries were RNA-sequenced, identifying 141 genes and 10 miRNAs differentially expressed between H and L groups. We selected four miRNAs based on their role in reproduction, and five genes displaying the highest differences and a positive mapping into known reproductive QTLs for RT-qPCR validation on the whole extreme population. Significant differences were validated for genes: PTGS2 (p = 0.03; H/L ratio = 3.50), PTHLH (p = 0.03; H/L ratio = 3.69), MMP8 (p = 0.01; H/L ratio =4.41) and SCNN1G (p = 0.04; H/L ratio = 3.42). Although selected miRNAs showed similar expression levels between H and L groups, significant correlation was found between the expression level of ssc-miR-133a (p < 0.01) and ssc-miR-92a (p < 0.01) and validated genes. These results provide a better understanding of the genetic architecture of prolificacy-related traits and embryo implantation failure in pigs.
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Bailey DL, Pichler BJ, Gückel B, Barthel H, Beer AJ, Bremerich J, Czernin J, Drzezga A, Franzius C, Goh V, Hartenbach M, Iida H, Kjaer A, la Fougère C, Ladefoged CN, Law I, Nikolaou K, Quick HH, Sabri O, Schäfer J, Schäfers M, Wehrl HF, Beyer T. Combined PET/MRI: Multi-modality Multi-parametric Imaging Is Here: Summary Report of the 4th International Workshop on PET/MR Imaging; February 23-27, 2015, Tübingen, Germany. Mol Imaging Biol 2015; 17:595-608. [PMID: 26286794 DOI: 10.1007/s11307-015-0886-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This paper summarises key themes and discussions from the 4th international workshop dedicated to the advancement of the technical, scientific and clinical applications of combined positron emission tomography (PET)/magnetic resonance imaging (MRI) systems that was held in Tübingen, Germany, from February 23 to 27, 2015. Specifically, we summarise the three days of invited presentations from active researchers in this and associated fields augmented by round table discussions and dialogue boards with specific topics. These include the use of PET/MRI in cardiovascular disease, paediatrics, oncology, neurology and multi-parametric imaging, the latter of which was suggested as a key promoting factor for the wider adoption of integrated PET/MRI. Discussions throughout the workshop and a poll taken on the final day demonstrated that attendees felt more strongly that PET/MRI has further advanced in both technical versatility and acceptance by clinical and research-driven users from the status quo of last year. Still, with only minimal evidence of progress made in exploiting the true complementary nature of the PET and MRI-based information, PET/MRI is still yet to achieve its potential. In that regard, the conclusion of last year's meeting "the real work has just started" still holds true.
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Affiliation(s)
- D L Bailey
- Department of Nuclear Medicine, Royal North Shore Hospital, Sydney, Australia
- Faculty of Health Sciences, University of Sydney, Sydney, Australia
| | - B J Pichler
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tübingen, Germany
| | - B Gückel
- Department of Interventional and Diagnostic Radiology, Eberhard Karls University, Tübingen, Germany
| | - H Barthel
- Department of Nuclear Medicine, Leipzig University, Leipzig, Germany
| | - A J Beer
- Department of Nuclear Medicine, Ulm University, Ulm, Germany
| | - J Bremerich
- Cardiothoracic Section, Department of Radiology and Nuclear Medicine, University of Basel Hospital, Basel, Switzerland
| | - J Czernin
- Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, USA
| | - A Drzezga
- Department of Nuclear Medicine, University Hospital Cologne, Cologne, Germany
| | - C Franzius
- Centre of Morphological and Molecular Diagnostics (ZeMoDi), MR- and PET/MRI; Centre of Nuclear Medicine and PET/CT, Bremen, Germany
| | - V Goh
- Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - M Hartenbach
- Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - H Iida
- Department of Investigative Radiology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - A Kjaer
- Department of Clinical Physiology, Nuclear Medicine & PET and Cluster for Molecular Imaging, Rigshospitalet and University of Copenhagen, Copenhagen, Denmark
| | - C la Fougère
- Department of Nuclear Medicine and Molecular Imaging, Eberhard Karls University Tübingen, Tübingen, Germany
| | - C N Ladefoged
- Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet, Copenhagen, Denmark
| | - I Law
- Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet, Copenhagen, Denmark
| | - K Nikolaou
- Department of Interventional and Diagnostic Radiology, Eberhard Karls University, Tübingen, Germany
| | - H H Quick
- Erwin L. Hahn Institute for MR Imaging, University of Duisburg-Essen, Essen, Germany
- High Field and Hybrid MR-Imaging, University Hospital Essen, Essen, Germany
| | - O Sabri
- Department of Nuclear Medicine, Leipzig University, Leipzig, Germany
| | - J Schäfer
- Department of Interventional and Diagnostic Radiology, Eberhard Karls University, Tübingen, Germany
| | - M Schäfers
- Department of Nuclear Medicine, University Hospital Münster, Münster, Germany
| | - H F Wehrl
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tübingen, Germany
| | - T Beyer
- Center for Medical Physics and Biomedical Engineering, General Hospital Vienna, Medical University Vienna, 4L, Waehringer Guertel 18-20, 1090, Vienna, Austria.
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Jafari S, Maleki Dizaj S, Adibkia K. Cell-penetrating peptides and their analogues as novel nanocarriers for drug delivery. ACTA ACUST UNITED AC 2015; 5:103-11. [PMID: 26191505 PMCID: PMC4492185 DOI: 10.15171/bi.2015.10] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Revised: 02/18/2015] [Accepted: 03/05/2015] [Indexed: 12/20/2022]
Abstract
INTRODUCTION The impermeability of biological membranes is a major obstacle in drug delivery; however, some peptides have transition capabilities of biomembranes. In recent decades, cell-penetrating peptides (CPPs) have been introduced as novel biocarriers that are able to translocate into the cells. CPPs are biologically potent tools for non-invasive cellular internalization of cargo molecules. Nevertheless, the non-specificity of these peptides presents a restriction for targeting drug delivery; therefore, a peptidic nanocarrier sensitive to matrix metalloproteinase (MMP) has been prepared, called activatable cell-penetrating peptide (ACPP). In addition to the cell-penetrating peptide dendrimer (DCPP), other analogues of CPPs have been synthesized. METHODS In this study, the most recent literature in the field of biomedical application of CPPs and their analogues, ACPP and DCCP, were reviewed. RESULTS This review focuses on CPP and its analogues, ACPP and DCPP, as novel nanocarriers for drug delivery. In addition, nanoconjugates and bioconjugates of these peptide sequences are discussed. CONCLUSION DCCP, branched CPPs, compared to linear peptides have advantages such as resistance to rapid biodegradation, high loading capacities and large-scale production capability.
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Affiliation(s)
- Samira Jafari
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran ; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Solmaz Maleki Dizaj
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran ; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Khosro Adibkia
- Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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Alie N, Eldib M, Fayad ZA, Mani V. Inflammation, Atherosclerosis, and Coronary Artery Disease: PET/CT for the Evaluation of Atherosclerosis and Inflammation. CLINICAL MEDICINE INSIGHTS-CARDIOLOGY 2015; 8:13-21. [PMID: 25674025 PMCID: PMC4294600 DOI: 10.4137/cmc.s17063] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 11/16/2014] [Accepted: 11/20/2014] [Indexed: 12/16/2022]
Abstract
Atherosclerosis is a prevalent cardiovascular disease marked by inflammation and the formation of plaque within arterial walls. As the disease progresses, there is an increased risk of major cardiovascular events. Owing to the nature of atherosclerosis, it is imperative to develop methods to further understand the physiological implications and progression of the disease. The combination of positron emission tomography (PET)/computed tomography (CT) has proven to be promising for the evaluation of atherosclerotic plaques and inflammation within the vessel walls. The utilization of the radiopharmaceutical tracer, 18F-fluorodeoxyglucose (18F-FDG), with PET/CT is invaluable in understanding the pathophysiological state involved in atherosclerosis. In this review, we will discuss the use of 18F-FDG-PET/CT imaging for the evaluation of atherosclerosis and inflammation both in preclinical and clinical studies. The potential of more specific novel tracers will be discussed. Finally, we will touch on the potential benefits of using the newly introduced combined PET/magnetic resonance imaging (MRI) for non-invasive imaging of atherosclerosis.
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Affiliation(s)
- Nadia Alie
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Mootaz Eldib
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Zahi A Fayad
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Venkatesh Mani
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Steingräber AK, Schelhaas S, Faust A, Jacobs AH, Schäfers M, Goerge T. Molecular imaging reveals time course of matrix metalloproteinase activity in acute cutaneous vasculitis in vivo. Exp Dermatol 2014; 22:730-5. [PMID: 24112050 DOI: 10.1111/exd.12253] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2013] [Indexed: 12/14/2022]
Abstract
Matrix metalloproteinases (MMPs) play a critical role in various pathological conditions including cutaneous inflammation. Thus far, serial assessment of MMP activity in ongoing inflammation is hampered due to technical limitations. Here, we present an innovative method for longitudinal detection of MMP activity by in vivo imaging. First, we analysed skin sections from patients suffering from leucocytoclastic vasculitis (LcV) and detected a significant MMP signal via immunofluorescence staining. Then, we mimicked LcV in mice in a well-studied model of immune complex-mediated vasculitis (ICV). This acute inflammatory process was serially visualized in vivo using the fluorescence-labelled MMP tracer Cy5.5-AF443. The deposition of fluorescence-labelled immune complexes and MMP tracer distribution was visualized repeatedly and non-invasively by fluorescence reflectance imaging. In correlation with the presence of MMP-2 and MMP-9 in immunofluorescence stainings, Cy5.5-AF443 accumulated in ICV spots in the skin of C57BL/6 mice. This tracer accumulation could also be observed in mice equipped with a dorsal skinfold chamber, where microscopic observations revealed an increased recruitment of fluorescence-labelled leucocytes during ICV. The specificity of the MMP tracer was supported by (i) analysis of mice deficient in functional β2 -integrins (CD18(-/-) ) and (ii) subsequent MMP immunofluorescence staining. These findings let us conclude that MMP accumulation in the acute phase of ICV depends on β2 -mediated leucocyte recruitment. In summary, we show that MMPs are involved in ICV as determined by Cy5.5-AF443, a new optical marker to longitudinally and non-invasively follow MMP activity in acute skin inflammation in vivo.
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Müller A, Krämer SD, Meletta R, Beck K, Selivanova SV, Rancic Z, Kaufmann PA, Vos B, Meding J, Stellfeld T, Heinrich TK, Bauser M, Hütter J, Dinkelborg LM, Schibli R, Ametamey SM. Gene expression levels of matrix metalloproteinases in human atherosclerotic plaques and evaluation of radiolabeled inhibitors as imaging agents for plaque vulnerability. Nucl Med Biol 2014; 41:562-9. [PMID: 24853402 DOI: 10.1016/j.nucmedbio.2014.04.085] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/10/2014] [Accepted: 04/12/2014] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Atherosclerotic plaque rupture is the primary cause for myocardial infarction and stroke. During plaque progression macrophages and mast cells secrete matrix-degrading proteolytic enzymes, such as matrix metalloproteinases (MMPs). We studied levels of MMPs and tissue inhibitor of metalloproteinases-3 (TIMP-3) in relation to the characteristics of carotid plaques. We evaluated in vitro two radiolabeled probes targeting active MMPs towards non-invasive imaging of rupture-prone plaques. METHODS Human carotid plaques obtained from endarterectomy were classified into stable and vulnerable by visual and histological analysis. MMP-1, MMP-2, MMP-8, MMP-9, MMP-10, MMP-12, MMP-14, TIMP-3, and CD68 levels were investigated by quantitative polymerase chain reaction. Immunohistochemistry was used to localize MMP-2 and MMP-9 with respect to CD68-expressing macrophages. Western blotting was applied to detect their active forms. A fluorine-18-labeled MMP-2/MMP-9 inhibitor and a tritiated selective MMP-9 inhibitor were evaluated by in vitro autoradiography as potential lead structures for non-invasive imaging. RESULTS Gene expression levels of all MMPs and CD68 were elevated in plaques. MMP-1, MMP-9, MMP-12 and MMP-14 were significantly higher in vulnerable than stable plaques. TIMP-3 expression was highest in stable and low in vulnerable plaques. Immunohistochemistry revealed intensive staining of MMP-9 in vulnerable plaques. Western blotting confirmed presence of the active form in plaque lysates. In vitro autoradiography showed binding of both inhibitors to stable and vulnerable plaques. CONCLUSIONS MMPs differed in their expression patterns among plaque phenotypes, providing possible imaging targets. The two tested MMP-2/MMP-9 and MMP-9 inhibitors may be useful to detect atherosclerotic plaques, but not the vulnerable lesions selectively.
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Affiliation(s)
- Adrienne Müller
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland.
| | - Stefanie D Krämer
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Romana Meletta
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Katharina Beck
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | | | - Zoran Rancic
- Clinic for Cardiovascular Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Philipp A Kaufmann
- Department of Nuclear Medicine, University Hospital Zurich, Zurich, Switzerland
| | - Bernhard Vos
- Global Drug Discovery, Bayer Healthcare, Berlin, Germany
| | - Jörg Meding
- Global Drug Discovery, Bayer Healthcare, Berlin, Germany
| | - Timo Stellfeld
- Global Drug Discovery, Bayer Healthcare, Berlin, Germany
| | | | - Marcus Bauser
- Global Drug Discovery, Bayer Healthcare, Berlin, Germany
| | - Joachim Hütter
- Global Drug Discovery, Bayer Healthcare, Berlin, Germany
| | | | - Roger Schibli
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Simon M Ametamey
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
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Golestani R, Sadeghi MM. Emergence of molecular imaging of aortic aneurysm: implications for risk stratification and management. J Nucl Cardiol 2014; 21:251-67; quiz 268-70. [PMID: 24381115 PMCID: PMC3991015 DOI: 10.1007/s12350-013-9845-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 11/19/2013] [Indexed: 12/21/2022]
Abstract
Imaging cellular and molecular processes associated with aneurysm expansion, dissection, and rupture can potentially transform the management of patients with thoracic and abdominal aortic aneurysm. Here, we review recent advances in molecular imaging of aortic aneurysm, focusing on imaging modalities with the greatest potential for clinical translation and application, PET, SPECT, and MRI. Inflammation (e.g., with (18)F-FDG, nanoparticles) and matrix remodeling (e.g., with matrix metalloproteinase-targeted tracers) are highlighted as promising targets for molecular imaging of aneurysm. Potential alternative or complementary approaches to molecular imaging for aneurysm risk stratification are briefly discussed.
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Affiliation(s)
- Reza Golestani
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
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Applicability of a high-throughput shotgun plasma protein screening approach in understanding maternal biological pathways relevant to infant birth weight outcome. J Proteomics 2013; 100:136-46. [PMID: 24342126 DOI: 10.1016/j.jprot.2013.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 11/01/2013] [Accepted: 12/05/2013] [Indexed: 10/25/2022]
Abstract
UNLABELLED There are reports linking maternal nutritional status, smoking and environmental chemical exposures to adverse pregnancy outcomes. However, biological bases for association between some of these factors and birth outcomes are yet to be established. The objective of this preliminary work is to test the capability of a new high-throughput shotgun plasma proteomic screening in identifying maternal changes relevant to pregnancy outcome. A subset of third trimester plasma samples (N=12) associated with normal and low-birth weight infants were fractionated, tryptic-digested and analyzed for global proteomic changes using a MALDI-TOF-TOF-MS methodology. Mass spectral data were mined for candidate biomarkers using bioinformatic and statistical tools. Maternal plasma profiles of cytokines (e.g. IL8, TNF-α), chemokines (e.g. MCP-1) and cardiovascular endpoints (e.g. ET-1, MMP-9) were analyzed by a targeted approach using multiplex protein array and HPLC-Fluorescence methods. Target and global plasma proteomic markers were used to identify protein interaction networks and maternal biological pathways relevant to low infant birth weight. Our results exhibited the potential to discriminate specific maternal physiologies relevant to risk of adverse birth outcomes. This proteomic approach can be valuable in understanding the impacts of maternal factors such as environmental contaminant exposures and nutrition on birth outcomes in future work. BIOLOGICAL SIGNIFICANCE We demonstrate here the fitness of mass spectrometry-based shot-gun proteomics for surveillance of biological changes in mothers, and for adverse pathway analysis in combination with target biomarker information. This approach has potential for enabling early detection of mothers at risk for low infant birth weight and preterm birth, and thus early intervention for mitigation and prevention of adverse pregnancy outcomes. This article is part of a Special Issue entitled: Can Proteomics Fill the Gap Between Genomics and Phenotypes?
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Bigalke B, Phinikaridou A, Andia ME, Cooper MS, Schuster A, Schönberger T, Griessinger CM, Wurster T, Onthank D, Ungerer M, Gawaz M, Nagel E, Botnar RM. Positron emission tomography/computed tomographic and magnetic resonance imaging in a murine model of progressive atherosclerosis using (64)Cu-labeled glycoprotein VI-Fc. Circ Cardiovasc Imaging 2013; 6:957-64. [PMID: 24107491 DOI: 10.1161/circimaging.113.000488] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Plaque erosion leads to exposure of subendothelial collagen, which may be targeted by glycoprotein VI (GPVI). We aimed to detect plaque erosion using (64)Cu-labeled GPVI-Fc (fragment crystallized). METHODS AND RESULTS Four-week-old male apolipoprotein E-deficient (ApoE(-/-)) mice (n=6) were fed a high-fat diet for 12 weeks. C57BL/6J wild-type (WT) mice served as controls (n=6). Another group of WT mice received a ligation injury of the left carotid artery (n=6) or sham procedure (n=4). All mice received a total activity of ≈12 MBq (64)Cu-GPVI-Fc by tail vein injection followed by delayed (24 hours) positron emission tomography using a NanoPET/computed tomographic scanner (Mediso, Hungary; Bioscan, USA) with an acquisition time of 1800 seconds. Seventy-two hours after positron emission tomography/computed tomography, all mice were scanned 2 hours after intravenous administration of 0.2 mmol/kg body weight of a gadolinium-based elastin-specific MR contrast agent. MRI was performed on a 3-T clinical scanner (Philips Healthcare, Best, The Netherlands). In ApoE(-/-) mice, the (64)Cu-GPVI-Fc uptake in the aortic arch was significantly higher compared with WT mice (ApoE(-/-): 13.2±1.5 Bq/cm(3) versus WT mice: 5.1±0.5 Bq/cm(3); P=0.028). (64)Cu-GPVI-Fc uptake was also higher in the injured left carotid artery wall compared with the intact right carotid artery of WT mice and as a trend compared with sham procedure (injured: 20.7±1.3 Bq/cm(3) versus intact: 2.3±0.5 Bq/cm(3); P=0.028 versus sham: 12.7±1.7 Bq/cm(3); P=0.068). Results were confirmed by ex vivo histology and in vivo MRI with elastin-specific MR contrast agent that measures plaque burden and vessel wall remodeling. Higher R1 relaxation rates were found in the injured carotid wall with a T1 mapping sequence (injured: 1.44±0.08 s(-1) versus intact: 0.91±0.02 s(-1); P=0.028 versus sham: 0.97±0.05 s(-1); P=0.068) and in the aortic arch of ApoE(-/-) mice compared with WT mice (ApoE(-/-): 1.49±0.05 s(-1) versus WT: 0.92±0.04 s(-1); P=0.028). CONCLUSIONS (64)Cu-GPVI-Fc positron emission tomographic imaging allows identification of exposed subendothelial collagen in injured WT and high-fat diet-fed ApoE(-/-) mice.
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Affiliation(s)
- Boris Bigalke
- Medizinische Klinik III, Kardiologie und Kreislauferkrankungen
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Hugenberg V, Riemann B, Hermann S, Schober O, Schäfers M, Szardenings K, Lebedev A, Gangadharmath U, Kolb H, Walsh J, Zhang W, Kopka K, Wagner S. Inverse 1,2,3-Triazole-1-yl-ethyl Substituted Hydroxamates as Highly Potent Matrix Metalloproteinase Inhibitors: (Radio)synthesis, in Vitro and First in Vivo Evaluation. J Med Chem 2013; 56:6858-70. [DOI: 10.1021/jm4006753] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Verena Hugenberg
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus
1, Building A1, D-48149 Münster, Germany
| | - Burkhard Riemann
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus
1, Building A1, D-48149 Münster, Germany
| | - Sven Hermann
- European Institute for Molecular
Imaging, University of Münster,
Mendelstrasse 11, D-48149 Münster, Germany
| | - Otmar Schober
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus
1, Building A1, D-48149 Münster, Germany
| | - Michael Schäfers
- European Institute for Molecular
Imaging, University of Münster,
Mendelstrasse 11, D-48149 Münster, Germany
- Interdisciplinary Centre of Clinical Research (IZKF), Albert-Schweitzer-Campus
1, Building D3, D-48149 Münster, Germany
| | - Katrin Szardenings
- Siemens Medical Solutions USA, Inc., 6100 Bristol Parkway, Culver City,
California 90230, United States
| | - Artem Lebedev
- Siemens Medical Solutions USA, Inc., 6100 Bristol Parkway, Culver City,
California 90230, United States
| | - Umesh Gangadharmath
- Siemens Medical Solutions USA, Inc., 6100 Bristol Parkway, Culver City,
California 90230, United States
| | - Hartmuth Kolb
- Siemens Medical Solutions USA, Inc., 6100 Bristol Parkway, Culver City,
California 90230, United States
| | - Joseph Walsh
- Siemens Medical Solutions USA, Inc., 6100 Bristol Parkway, Culver City,
California 90230, United States
| | - Wei Zhang
- Siemens Medical Solutions USA, Inc., 6100 Bristol Parkway, Culver City,
California 90230, United States
| | - Klaus Kopka
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus
1, Building A1, D-48149 Münster, Germany
| | - Stefan Wagner
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus
1, Building A1, D-48149 Münster, Germany
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Appel AA, Chou CY, Larson JC, Zhong Z, Schoen FJ, Johnston CM, Brey EM, Anastasio MA. An initial evaluation of analyser-based phase-contrast X-ray imaging of carotid plaque microstructure. Br J Radiol 2013; 86:20120318. [PMID: 23239697 DOI: 10.1259/bjr.20120318] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Carotid artery plaque instability can result in rupture and lead to ischaemic stroke. Stability of plaques appears to be a function of composition. Current non-invasive imaging techniques are limited in their ability to classify distinct histological regions within plaques. Phase-contrast (PC) X-ray imaging methods are an emerging class of techniques that have shown promise for identifying soft-tissue features without use of exogenous contrast agents. This is the first study to apply analyser-based X-ray PC imaging in CT mode to provide three-dimensional (3D) images of excised atherosclerotic plaques. The results provide proof of principle for this technique as a promising method for analysis of carotid plaque microstructure. Multiple image radiography CT (MIR-CT), a tomographic implementation of X-ray PC imaging that employs crystal optics, was employed to image excised carotid plaques. MIR-CT imaging yields three complementary images of the plaque's 3D X-ray absorption, refraction and scatter properties. These images were compared with histological sections of the tissue. X-ray PC images were able to identify the interface between the plaque and the medial wall. In addition, lipid-rich and highly vascularized regions were visible in the images as well as features depicting inflammation. This preliminary research shows MIR-CT imaging can reveal details about plaque structure not provided by traditional absorption-based X-ray imaging and appears to identify specific histological regions within plaques. This is the first study to apply analyser-based X-ray PC imaging to human carotid artery plaques to identify distinct soft-tissue regions.
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Affiliation(s)
- A A Appel
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA
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Abstract
In this era of systems biology, the tide of information derived from "omic" technologies (genomics, proteomics, etc.) has sparked a revolution in drug design, with many industrial and academic programs now embracing the concepts of molecular medicine (i.e., targeting changes in specific proteins or pathways) as measures of treatment efficacy and outcome. This approach has yielded a plethora of new preclinical therapeutics directed at novel targets within oncology. In many ways, the evolution of molecular imaging agents as diagnostic probes mirrors that of chemotherapeutics; yet despite an increasing number of PET and SPECT radiotracers being evaluated in human trials, relatively few agents have found widespread use in clinical oncology. In light of this observation, is it time to reevaluate our strategies for radiopharmaceutical design and use? In this article, we argue that PET has enormous potential to deliver clinically relevant information on disease dynamics that extends beyond mapping the density and spatial distribution of a target. Recent developments in targeting pharmacodynamic biomarkers aim to exploit better the advantages of functional PET by detecting changes in signal transduction pathways, particularly in response to disease progression or treatment in cancer.
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Affiliation(s)
- Jason P Holland
- Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital, and Department of Radiology, Harvard Medical School, Boston, Massachusetts 02114, USA.
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Beer CD, Potter K, Lenzo N, Blacker D, Arnolda LF, Hankey GJ, Puddey IB. Systemic arterial inflammation, measured with 18FDG-PET, is common amongst subjects with both recent and prior cerebrovascular disease. Clin Neurol Neurosurg 2012; 114:613-6. [DOI: 10.1016/j.clineuro.2011.12.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 08/12/2011] [Accepted: 12/15/2011] [Indexed: 10/14/2022]
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34
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Hugenberg V, Breyholz HJ, Riemann B, Hermann S, Schober O, Schäfers M, Gangadharmath U, Mocharla V, Kolb H, Walsh J, Zhang W, Kopka K, Wagner S. A new class of highly potent matrix metalloproteinase inhibitors based on triazole-substituted hydroxamates: (radio)synthesis and in vitro and first in vivo evaluation. J Med Chem 2012; 55:4714-27. [PMID: 22540974 DOI: 10.1021/jm300199g] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In vivo imaging of MMPs is of great (pre)clinical interest and can potentially be realized with modern three-dimensional and noninvasive in vivo molecular imaging techniques such as positron emission tomography (PET). Consequently, MMP inhibitors (MMPIs) radiolabeled with positron emitting nuclides (e.g., (18)F) represent a suitable tool for the visualization of activated MMPs with PET. On the basis of our previous work and results regarding radiolabeled and unlabeled derivatives of the nonselective MMPIs, we discovered a new class of fluorinated MMPIs with a triazole-substituted hydroxamate substructure. These novel MMPIs are characterized by an increased hydrophilicity compared with the lead structures and excellent MMP inhibition potencies for MMP-2, MMP-8, MMP-9, and MMP-13 (IC(50) = 0.006-107 nM). Therefore, one promising fluorinated triazole-substituted hydroxamate (30b) was selected and resynthesised as its (18)F-labeled version to yield the potential PET radioligand [(18)F]30b. The biodistribution behavior of this novel compound was investigated with small animal PET.
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Affiliation(s)
- Verena Hugenberg
- Department of Nuclear Medicine, University Hospital Münster , Albert-Schweitzer-Campus 1, Building A1, D-48149 Münster, Germany.
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Mohammad G, Kowluru RA. Diabetic retinopathy and signaling mechanism for activation of matrix metalloproteinase-9. J Cell Physiol 2012; 227:1052-61. [PMID: 21567393 DOI: 10.1002/jcp.22822] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the pathogenesis of diabetic retinopathy, H-Ras (a small molecular weight G-protein) and matrix metalloproteinase-9 (MMP9) act as pro-apoptotic, accelerating the apoptosis of retinal capillary cells, a phenomenon that predicts its development and the activation of MMP9 is under the control of H-Ras. The goal of this study is to elucidate the cellular mechanism by which H-Ras activates MMP9 culminating in the development of diabetic retinopathy. Using isolated retinal endothelial cells, the effect of regulation of H-Ras downstream signaling cascade, Raf-1, MEK, and ERK, was investigated on glucose-induced activation of MMP9. In vitro results were confirmed in the retina obtained from diabetic mice manipulated for MMP9 gene, and also in the retinal microvasculature obtained from human donors with diabetic retinopathy. Regulation of Raf-1/MEK/ERK by their specific siRNAs and pharmacologic inhibitors prevented glucose-induced activation of MMP9 in retinal endothelial cells. In MMP9-KO mice, diabetes had no effect on retinal MMP9 activation, and H-Ras/Raf-1/MEK signaling cascade remained normal. Similarly, donors with diabetic retinopathy had increased MMP9 activity in their retinal microvessels, the site of histopathology associated with diabetic retinopathy, and this was accompanied by activated H-Ras signaling pathway (Raf-1/ERK). Collectively, these results suggest that Ras/Raf-1/MEK/ERK cascade has an important role in the activation of retinal MMP9 resulting in the apoptosis of its capillary cells. Understanding the upstream mechanism responsible for the activation of MMP9 should help identify novel molecular targets for future pharmacological interventions to inhibit the development/progression of diabetic retinopathy.
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Affiliation(s)
- Ghulam Mohammad
- Kresge Eye Institute, Wayne State University, Detroit, Michigan 48201, USA
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Huang Y, Yin H, Wang J, Liu Q, Wu C, Chen K. Aberrant expression of FcγRIIIA (CD16) contributes to the development of atherosclerosis. Gene 2012; 498:91-5. [DOI: 10.1016/j.gene.2012.02.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 01/30/2012] [Accepted: 02/07/2012] [Indexed: 12/19/2022]
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Aller MA, Heras N, Blanco-Rivero J, Arias JI, Lahera V, Balfagón G, Arias J. Portal hypertensive cardiovascular pathology: the rescue of ancestral survival mechanisms? Clin Res Hepatol Gastroenterol 2012; 36:35-46. [PMID: 22264837 DOI: 10.1016/j.clinre.2011.07.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Accepted: 07/26/2011] [Indexed: 02/04/2023]
Abstract
The portal system derives from the vitelline system, which is an extra-embryonic venous system. It could be suggested that this extraembryonic origin determines some of the characteristics attributed to portal hypertension, both compensated, i.e. prehepatic, and decompensated, i.e. fibrotic or cirrhotic. The experimental models most frequently used for studying both types of portal hypertension are portal vein ligation and common bile duct ligation in rats, respectively. We propose that in partial portal vein ligated rats, a low-grade inflammatory response, formed by the successive expression of three overlapping phenotypes - ischemia-reperfusion, vitellogenic-like and remodeling or gastrulation-like - is produced. The names of these inflammatory phenotypes developed in compensated portal hypertension are based on some metabolic similarities that can be established with the abovementioned phases of embryonic development. In bile-duct ligated rats, decompensation related to hepatic insufficiency would induce a high-grade inflammatory response. In this experimental model, the splanchnic interstitium, the mesenteric lymph and the peritoneal mesothelium seem to create an inflammatory axis that produces ascites. The functional comparison between the ascitic and the amniotic fluids would imply that, in the decompensated portal hypertensive syndrome, the abdominal mesothelium acquires properties of the amniotic membranes or amnion. In conclusion, the hypothetical comparison between the inflammatory portal hypertensive evolutive types and the evolutive phases of embryonic development could allow for translational research.
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Affiliation(s)
- Maria-Angeles Aller
- Department of Surgery I, School of Medicine, Complutense University of Madrid, Plaza de Ramon y Cajal s.n., 28040 Madrid, Spain
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te Boekhorst BC, van Tilborg GA, Strijkers GJ, Nicolay K. Molecular MRI of Inflammation in Atherosclerosis. CURRENT CARDIOVASCULAR IMAGING REPORTS 2011; 5:60-68. [PMID: 22308200 PMCID: PMC3261392 DOI: 10.1007/s12410-011-9114-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Inflammatory activity in atherosclerotic plaque is a risk factor for plaque rupture and atherothrombosis and may direct interventional therapy. Inflammatory activity can be evaluated at the (sub)cellular level using in vivo molecular MRI. This paper reviews recent progress in contrast-enhanced molecular MRI to visualize atherosclerotic plaque inflammation. Various MRI contrast agents, among others ultra-small particles of iron oxide, low-molecular-weight Gd-chelates, micelles, liposomes, and perfluorocarbon emulsions, have been used for in vivo visualization of various inflammation-related targets, such as macrophages, oxidized LDL, endothelial cell expression, plaque neovasculature, MMPs, apoptosis, and activated platelets/thrombus. An enzyme-activatable magnetic resonance contrast agent has been developed to study myeloperoxidase activity in inflamed plaques. Agents creating contrast based on the chemical exchange saturation transfer mechanism were used for thrombus imaging. Transfer of these molecular MRI techniques to the clinic will critically depend on the safety profiles of these newly developed magnetic resonance contrast agents.
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Affiliation(s)
- Bernard C. te Boekhorst
- Biomedical NMR, Department of Biomedical Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Geralda A. van Tilborg
- Biomedical MR Imaging and Spectroscopy Group, Image Sciences Institute, University Medical Center Utrecht, Yalelaan 2, 3584 CM Utrecht, The Netherlands
| | - Gustav J. Strijkers
- Biomedical NMR, Department of Biomedical Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Klaas Nicolay
- Biomedical NMR, Department of Biomedical Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
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Phipps JE, Hatami N, Galis ZS, Baker JD, Fishbein MC, Marcu L. A fluorescence lifetime spectroscopy study of matrix metalloproteinases-2 and -9 in human atherosclerotic plaque. JOURNAL OF BIOPHOTONICS 2011; 4:650-8. [PMID: 21770037 PMCID: PMC3239410 DOI: 10.1002/jbio.201100042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 06/16/2011] [Accepted: 06/21/2011] [Indexed: 05/20/2023]
Abstract
Matrix metalloproteinase (MMP)-2 and -9 play important roles in the progression of atherosclerosis. This study aims to determine whether MMP-2 and -9 content in the fibrotic caps of atherosclerotic plaque is correlated with plaque autofluorescence. A time-resolved laser-induced fluorescence spectroscopy (TR-LIFS) system was used to measure the autofluorescence and assess the biochemical composition of human plaques obtained from carotid endarterectomy. Results presented here demonstrate for the first time the ability to characterize the biochemical composition as it relates to MMP-2 and -9 content in the atherosclerotic plaque cap using a label-free imaging technique implemented with a fiberoptic TR-LIFS system.
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Affiliation(s)
- Jennifer E. Phipps
- University of California Davis, Department of Biomedical Engineering, One Shields Avenue, Davis, CA 95616
| | - Nisa Hatami
- University of California Davis, Department of Biomedical Engineering, One Shields Avenue, Davis, CA 95616
| | | | - J. Dennis Baker
- University of California Los Angeles, David Geffen School of Medicine, Department of Vascular Surgery, 200 UCLA Medical Plaza, Suite 526, Los Angeles, CA 90095
| | - Michael C. Fishbein
- University of California Los Angeles, David Geffen School of Medicine, Department of Pathology, 10833 Le Conte Ave, Los Angeles CA 90095
| | - Laura Marcu
- University of California Davis, Department of Biomedical Engineering, One Shields Avenue, Davis, CA 95616
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Bigalke B, Lindemann S, Schönberger T, Pohlmeyer I, Chiribiri A, Schuster A, Botnar RM, Griessinger CM, Pichler BJ, Gawaz M. Ex vivoimaging of injured arteries in rabbits using fluorescence-labelled glycoprotein VI-Fc. Platelets 2011; 23:1-6. [DOI: 10.3109/09537104.2011.585258] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Wagner S, Faust A, Breyholz HJ, Schober O, Schäfers M, Kopka K. The MMP inhibitor (R)-2-(N-benzyl-4-(2-[18F]fluoroethoxy)phenylsulphonamido)-N-hydroxy-3-methylbutanamide: Improved precursor synthesis and fully automated radiosynthesis. Appl Radiat Isot 2011; 69:862-8. [DOI: 10.1016/j.apradiso.2011.02.038] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Revised: 02/15/2011] [Accepted: 02/23/2011] [Indexed: 11/28/2022]
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Bigalke B, Pohlmeyer I, Schönberger T, Griessinger CM, Ungerer M, Botnar RM, Pichler BJ, Gawaz M. Imaging of injured and atherosclerotic arteries in mice using fluorescence-labeled glycoprotein VI-Fc. Eur J Radiol 2011; 79:e63-9. [PMID: 21497471 DOI: 10.1016/j.ejrad.2011.03.055] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Accepted: 03/15/2011] [Indexed: 01/27/2023]
Abstract
PURPOSE To assess endothelial injury and repair using fluorescence-labeled glycoprotein VI (GPVI)-Fc in a murine model. MATERIALS AND METHODS Three 4-week-old male ApoE-deficient (ApoE(-/-))-mice were fed with a 1.25% cholesterol diet over 16 weeks and compared to three wild type (WT) C57BL/6J-mice in a wire-induced vascular injury model. Another group of WT mice (n=10) were mechanically injured by carotid ligation. Fluorescence-labeled GPVI-Fc (150 μg/mouse) was administered and assessed by optical imaging 24h after injury and compared to another group (n=3) which was injected two days after injury and sacrificed another day later. RESULTS After denudation, all injured carotids of WT mice showed a higher mean fluorescence signal than the corresponding intact carotids of the same animals (48.4 ± 18.9 vs. 10.4 ± 1.0; P=0.028). Injection of unlabeled GPVI-Fc 20 h and 3h before injecting GPVI-Fc-FITC significantly reduced the fluorescence signal in injured carotids to 14.6 ± 4.6, while intact carotids showed a signal of 9.2 ± 1.1; P=0.046. Ligation injury resulted with an increased GPVI-Fc-binding to injured carotids compared to intact carotids (31.53 ± 6.18 vs. 16.48 ± 5.15; P=0.039). Three days after injury and 24h after GPVI-Fc-FITC injection, differences between intact and injured carotids have vanished (12.51 ± 2.76 vs. 14.76 ± 1.59; P=0.519). CONCLUSIONS A GPVI-based plaque imaging system could help to identify vascular lesions and to take a precautionary measure as necessary.
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Affiliation(s)
- Boris Bigalke
- Medizinische Klinik III, Kardiologie und Kreislauferkrankungen, Eberhard-Karls-Universität Tübingen, Germany.
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van Duijnhoven SM, Robillard MS, Nicolay K, Grüll H. Tumor Targeting of MMP-2/9 Activatable Cell-Penetrating Imaging Probes Is Caused by Tumor-Independent Activation. J Nucl Med 2011; 52:279-86. [DOI: 10.2967/jnumed.110.082503] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Kerwin WS. Noninvasive Imaging of Plaque Inflammation. JACC Cardiovasc Imaging 2010; 3:1136-8. [DOI: 10.1016/j.jcmg.2010.09.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Accepted: 09/03/2010] [Indexed: 11/24/2022]
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Lucignani G, Schäfers M. PET, CT and MRI characterisation of the atherosclerotic plaque. Eur J Nucl Med Mol Imaging 2010; 37:2398-402. [DOI: 10.1007/s00259-010-1634-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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