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Totoń-Żurańska J, Mikolajczyk TP, Saju B, Guzik TJ. Vascular remodelling in cardiovascular diseases: hypertension, oxidation, and inflammation. Clin Sci (Lond) 2024; 138:817-850. [PMID: 38920058 DOI: 10.1042/cs20220797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 06/08/2024] [Accepted: 06/10/2024] [Indexed: 06/27/2024]
Abstract
Optimal vascular structure and function are essential for maintaining the physiological functions of the cardiovascular system. Vascular remodelling involves changes in vessel structure, including its size, shape, cellular and molecular composition. These changes result from multiple risk factors and may be compensatory adaptations to sustain blood vessel function. They occur in diverse cardiovascular pathologies, from hypertension to heart failure and atherosclerosis. Dynamic changes in the endothelium, fibroblasts, smooth muscle cells, pericytes or other vascular wall cells underlie remodelling. In addition, immune cells, including macrophages and lymphocytes, may infiltrate vessels and initiate inflammatory signalling. They contribute to a dynamic interplay between cell proliferation, apoptosis, migration, inflammation, and extracellular matrix reorganisation, all critical mechanisms of vascular remodelling. Molecular pathways underlying these processes include growth factors (e.g., vascular endothelial growth factor and platelet-derived growth factor), inflammatory cytokines (e.g., interleukin-1β and tumour necrosis factor-α), reactive oxygen species, and signalling pathways, such as Rho/ROCK, MAPK, and TGF-β/Smad, related to nitric oxide and superoxide biology. MicroRNAs and long noncoding RNAs are crucial epigenetic regulators of gene expression in vascular remodelling. We evaluate these pathways for potential therapeutic targeting from a clinical translational perspective. In summary, vascular remodelling, a coordinated modification of vascular structure and function, is crucial in cardiovascular disease pathology.
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Affiliation(s)
- Justyna Totoń-Żurańska
- Center for Medical Genomics OMICRON, Jagiellonian University Medical College, Krakow, Poland
| | - Tomasz P Mikolajczyk
- Center for Medical Genomics OMICRON, Jagiellonian University Medical College, Krakow, Poland
- Department of Internal Medicine, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - Blessy Saju
- BHF Centre for Research Excellence, Centre for Cardiovascular Sciences, The University of Edinburgh, Edinburgh, U.K
| | - Tomasz J Guzik
- Center for Medical Genomics OMICRON, Jagiellonian University Medical College, Krakow, Poland
- Department of Internal Medicine, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
- BHF Centre for Research Excellence, Centre for Cardiovascular Sciences, The University of Edinburgh, Edinburgh, U.K
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Lv Y, Jiang Z, Zhou W, Yang H, Jin G, Wang D, Kong C, Qian Z, Gu Y, Chen S, Zhu L. Low-Shear Stress Promotes Atherosclerosis via Inducing Endothelial Cell Pyroptosis Mediated by IKKε/STAT1/NLRP3 Pathway. Inflammation 2024; 47:1053-1066. [PMID: 38315275 PMCID: PMC11147929 DOI: 10.1007/s10753-023-01960-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/11/2023] [Accepted: 12/25/2023] [Indexed: 02/07/2024]
Abstract
Atherosclerosis is initiated by vascular endothelial dysfunction, and low-shear stress (LSS) of blood flow is a key factor leading to endothelial dysfunction. Growing evidence suggests that endothelial cell pyroptosis plays an important role in the development of atherosclerosis. Studies have shown that low-shear stress can induce endothelial cell pyroptosis, but the exact mechanism remains unclear. Our experiments demonstrated that low-shear stress induced endothelial cell pyroptosis and the phosphorylation of IκB kinase ε (IKKε). IKKε knockdown not only significantly attenuated atherosclerosis lesions of aortic arch areas in ApoE-/- mice fed with high cholesterol diets, but also markedly reduced endothelial cell pyroptosis and NLRP3 expression triggered by low-shear stress. Further mechanism studies showed that IKKε promoted the expression of NLRP3 via activating signal transducer and activator of transcription 1 (STAT1) and the subsequent binding of STAT1 to NLRP3 promoter region. These results suggest that low-shear stress plays a pro-atherosclerotic role by promoting endothelial cell pyroptosis through the IKKε/STAT1/NLRP3 pathway, which provides new insights into the formation of atherosclerosis.
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Affiliation(s)
- Yifei Lv
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, 210000, China
| | - Zihao Jiang
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, 210000, China
| | - Wenying Zhou
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, 210000, China
| | - Hongfeng Yang
- Department of Intensive Care Unit, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Guozhen Jin
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, 210000, China
| | - Dongchen Wang
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, 210000, China
| | - Chaohua Kong
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, 210000, China
| | - Zhiyuan Qian
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, 210000, China
| | - Yue Gu
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, 210000, China
| | - Shaoliang Chen
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, 210000, China.
| | - Linlin Zhu
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, 210000, China.
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Zhang H, Li Y, Liu M, Guo M, Zhang R, Zhao K, Wu J, Zhao Z, Zhu H, Liu J. Asiatic acid alleviates vascular remodeling in BAPN-induced aortic dissection through inhibiting NF-κB p65/CX3CL1 signaling. FASEB J 2024; 38:e23645. [PMID: 38703043 DOI: 10.1096/fj.202302327r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 03/30/2024] [Accepted: 04/22/2024] [Indexed: 05/06/2024]
Abstract
Inflammation assumes a pivotal role in the aortic remodeling of aortic dissection (AD). Asiatic acid (AA), a triterpene compound, is recognized for its strong anti-inflammatory properties. Yet, its effects on β-aminopropionitrile (BAPN)-triggered AD have not been clearly established. The objective is to determine whether AA attenuates adverse aortic remodeling in BAPN-induced AD and clarify potential molecular mechanisms. In vitro studies, RAW264.7 cells pretreated with AA were challenged with lipopolysaccharide (LPS), and then the vascular smooth muscle cells (VSMCs)-macrophage coculture system was established to explore intercellular interactions. To induce AD, male C57BL/6J mice at three weeks of age were administered BAPN at a dosage of 1 g/kg/d for four weeks. To decipher the mechanism underlying the effects of AA, RNA sequencing analysis was conducted, with subsequent validation of these pathways through cellular experiments. AA exhibited significant suppression of M1 macrophage polarization. In the cell coculture system, AA facilitated the transformation of VSMCs into a contractile phenotype. In the mouse model of AD, AA strikingly prevented the BAPN-induced increases in inflammation cell infiltration and extracellular matrix degradation. Mechanistically, RNA sequencing analysis revealed a substantial upregulation of CX3CL1 expression in BAPN group but downregulation in AA-treated group. Additionally, it was observed that the upregulation of CX3CL1 negated the beneficial impact of AA on the polarization of macrophages and the phenotypic transformation of VSMCs. Crucially, our findings revealed that AA is capable of downregulating CX3CL1 expression, accomplishing this by obstructing the nuclear translocation of NF-κB p65. The findings indicate that AA holds promise as a prospective treatment for adverse aortic remodeling by suppressing the activity of NF-κB p65/CX3CL1 signaling pathway.
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Affiliation(s)
- Heng Zhang
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao University, Shandong, China
| | - Yubin Li
- Department of Vascular Surgery, Linyi Peoples' Hospital, Linyi, Shandong, China
| | - Mingyuan Liu
- Department of Vascular Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Mingjin Guo
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao University, Shandong, China
| | - Ruipeng Zhang
- Department of Interventional Vascular Surgery, Qingdao Huang Dao District Central Hospital, Binzhou Medical University, Shandong, China
| | - Kaiwen Zhao
- Department of Vascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Jianlie Wu
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao University, Shandong, China
| | - Zhenyuan Zhao
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao University, Shandong, China
| | - Hongqiao Zhu
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao University, Shandong, China
- Department of Vascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Junjun Liu
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao University, Shandong, China
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Qian X, Zheng Y, Xu L, Liu Z, Chen M, Tong F, Fan P, Chen Z, Dong N, Zhang C, Liu J. Deciphering the role of CX3CL1-CX3CR1 in aortic aneurysm pathogenesis: insights from Mendelian randomization and transcriptomic analyses. Front Immunol 2024; 15:1383607. [PMID: 38715600 PMCID: PMC11074460 DOI: 10.3389/fimmu.2024.1383607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 04/09/2024] [Indexed: 06/05/2024] Open
Abstract
Background The crucial role of inflammation in aortic aneurysm (AA) is gaining prominence, while there is still a lack of key cytokines or targets for effective clinical translation. Methods Mendelian randomization (MR) analysis was performed to identify the causal relationship between 91 circulating inflammatory proteins and AA and between 731 immune traits and AA. Bulk RNA sequencing data was utilized to demonstrate the expression profile of the paired ligand-receptor. Gene enrichment analysis, Immune infiltration, and correlation analysis were employed to deduce the potential role of CX3CR1. We used single-cell RNA sequencing data to pinpoint the localization of CX3CL1 and CX3CR1, which was further validated by multiplex immunofluorescence staining. Cellchat analysis was utilized to infer the CX3C signaling pathway. Trajectory analysis and the Cytosig database were exploited to determine the downstream effect of CX3CL1-CX3CR1. Results We identified 4 candidates (FGF5, CX3CL1, IL20RA, and SCF) in multiple two-sample MR analyses. Subsequent analysis of the expression profile of the paired receptor revealed the significant upregulation of CX3CR1 in AA and its positive correlation with pro-inflammatory macrophages. Two sample MR between immune cell traits and AA demonstrated the potential causality between intermediate monocytes and AA. We finally deciphered in single-cell sequencing data that CX3CL1 sent by endothelial cells (ECs) acted on CX3CR1 of intermediated monocytes, leading to its recruitment and pro-inflammatory responses. Conclusion Our study presented a genetic insight into the pathogenetic role of CX3CL1-CX3CR1 in AA, and further deciphered the CX3C signaling pathway between ECs and intermediate monocytes.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Nianguo Dong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Chao Zhang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Junwei Liu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Zhang C, Zhang Y, Zhuang R, Yang K, Chen L, Jin B, Ma Y, Zhang Y, Tang K. Alterations in CX3CL1 Levels and Its Role in Viral Pathogenesis. Int J Mol Sci 2024; 25:4451. [PMID: 38674036 PMCID: PMC11050295 DOI: 10.3390/ijms25084451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/12/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
CX3CL1, also named fractalkine or neurotactin, is the only known member of the CX3C chemokine family that can chemoattract several immune cells. CX3CL1 exists in both membrane-anchored and soluble forms, with each mediating distinct biological activities. CX3CL1 signals are transmitted through its unique receptor, CX3CR1, primarily expressed in the microglia of the central nervous system (CNS). In the CNS, CX3CL1 acts as a regulator of microglia activation in response to brain disorders or inflammation. Recently, there has been a growing interest in the role of CX3CL1 in regulating cell adhesion, chemotaxis, and host immune response in viral infection. Here, we provide a comprehensive review of the changes and function of CX3CL1 in various viral infections, such as human immunodeficiency virus (HIV), SARS-CoV-2, influenza virus, and cytomegalovirus (CMV) infection, to highlight the emerging roles of CX3CL1 in viral infection and associated diseases.
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Affiliation(s)
| | | | | | | | | | | | | | - Yun Zhang
- Department of Immunology, The Fourth Military Medical University, Xi’an 710032, China; (C.Z.); (Y.Z.); (R.Z.); (K.Y.); (L.C.); (B.J.); (Y.M.)
| | - Kang Tang
- Department of Immunology, The Fourth Military Medical University, Xi’an 710032, China; (C.Z.); (Y.Z.); (R.Z.); (K.Y.); (L.C.); (B.J.); (Y.M.)
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Bredewold OW, van Oeveren-Rietdijk AM, Florijn B, Rotmans JI, de Fijter JW, van Kooten C, van Zonneveld AJ, de Boer HC. Conversion from calcineurin inhibitors to belatacept-based immunosuppressive therapy skews terminal proliferation of non-classical monocytes and lowers lymphocyte counts. Transpl Immunol 2024; 82:101976. [PMID: 38199271 DOI: 10.1016/j.trim.2023.101976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 11/26/2023] [Accepted: 12/31/2023] [Indexed: 01/12/2024]
Abstract
Belatacept, a modified form of CTLA-Ig that blocks CD28-mediated co-stimulation of T cells, is an immune-suppressant that can be used as an alternative to calcineurin inhibitors (CNIs). In kidney transplant recipients, belatacept has been associated with improved renal function and reduced cardiovascular toxicity. Monocytes as well as T-lymphocytes play causal roles in the pathophysiology of atherosclerotic disease. We hypothesized that the beneficial impact of the use of belatacept over CNIs on cardiovascular risk could be partly explained by the impact of belatacept therapy on these circulating leukocytes. Hence, we phenotyped circulating leukocytes in transplanted patients with a stable renal function that were randomized between either continuation of CNI or conversion to belatacept in two international studies in which we participated. In 41 patients, we found that belatacept-treated patients consistently showed lower numbers of B-lymphocytes, T-lymphocytes as well as CD14-negative monocytes (CD14NM), especially in non-diabetic patients. Our observation that this decrease was associated to plasma concentrations of TNFα is consistent with a model where CD14NM-production of TNFα is diminished by belatacept-treatment, due to effects on the antigen-presenting cell compartment.
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Affiliation(s)
- O W Bredewold
- Department of Internal Medicine (Nephrology) and the Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, the Netherlands..
| | - A M van Oeveren-Rietdijk
- Department of Internal Medicine (Nephrology) and the Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - B Florijn
- Department of Internal Medicine (Nephrology) and the Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - J I Rotmans
- Department of Internal Medicine (Nephrology) and the Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - J W de Fijter
- Department of Internal Medicine (Nephrology) and the Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - C van Kooten
- Department of Internal Medicine (Nephrology) and the Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - A J van Zonneveld
- Department of Internal Medicine (Nephrology) and the Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - H C de Boer
- Department of Internal Medicine (Nephrology) and the Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, the Netherlands
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7
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Naidoo L, Arumugam T, Ramsuran V. Host Genetic Impact on Infectious Diseases among Different Ethnic Groups. ADVANCED GENETICS (HOBOKEN, N.J.) 2023; 4:2300181. [PMID: 38099246 PMCID: PMC10716055 DOI: 10.1002/ggn2.202300181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/11/2023] [Indexed: 12/17/2023]
Abstract
Infectious diseases such as malaria, tuberculosis (TB), human immunodeficiency virus (HIV), and the coronavirus disease of 2019 (COVID-19) are problematic globally, with high prevalence particularly in Africa, attributing to most of the death rates. There have been immense efforts toward developing effective preventative and therapeutic strategies for these pathogens globally, however, some remain uncured. Disease susceptibility and progression for malaria, TB, HIV, and COVID-19 vary among individuals and are attributed to precautionary measures, environment, host, and pathogen genetics. While studying individuals with similar attributes, it is suggested that host genetics contributes to most of an individual's susceptibility to disease. Several host genes are identified to associate with these pathogens. Interestingly, many of these genes and polymorphisms are common across diseases. This paper analyzes genes and genetic variations within host genes associated with HIV, TB, malaria, and COVID-19 among different ethnic groups. The differences in host-pathogen interaction among these groups, particularly of Caucasian and African descent, and which gene polymorphisms are prevalent in an African population that possesses protection or risk to disease are reviewed. The information in this review could potentially help develop personalized treatment that could effectively combat the high disease burden in Africa.
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Affiliation(s)
- Lisa Naidoo
- School of Laboratory Medicine and Medical SciencesCollege of Health SciencesUniversity of KwaZulu‐NatalDurban4041South Africa
| | - Thilona Arumugam
- School of Laboratory Medicine and Medical SciencesCollege of Health SciencesUniversity of KwaZulu‐NatalDurban4041South Africa
| | - Veron Ramsuran
- School of Laboratory Medicine and Medical SciencesCollege of Health SciencesUniversity of KwaZulu‐NatalDurban4041South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA)University of KwaZulu‐NatalDurban4041South Africa
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Sarakpi T, Mesic A, Speer T. Leukocyte-endothelial interaction in CKD. Clin Kidney J 2023; 16:1845-1860. [PMID: 37915921 PMCID: PMC10616504 DOI: 10.1093/ckj/sfad135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Indexed: 11/03/2023] Open
Abstract
Chronic kidney disease (CKD) represents an independent risk factor for cardiovascular diseases (CVD). Accordingly, CKD patients show a substantial increased risk of cardiovascular mortality. Inflammation represents an important link between CKD and CVD. The interaction between endothelial cells and effector cells of the innate immune system plays a central role in the development and progression of inflammation. Vascular injury causes endothelial dysfunction, leading to augmented oxidative stress, increased expression of leukocyte adhesion molecules and chronic inflammation. CKD induces numerous metabolic changes, creating a uremic milieu resulting in the accumulation of various uremic toxins. These toxins lead to vascular injury, endothelial dysfunction and activation of the innate immune system. Recent studies describe CKD-dependent changes in monocytes that promote endothelial dysfunction and thus CKD progression and CKD-associated CVD. The NLR family pyrin domain containing 3-interleukin-1β-interleukin-6 (NLRP3-IL-1β-IL-6) signaling pathway plays a pivotal role in the development and progression of CVD and CKD alike. Several clinical trials are investigating targeted inhibition of this pathway indicating that anti-inflammatory therapeutic strategies may emerge as novel approaches in patients at high cardiovascular risk and nonresolving inflammation. CKD patients in particular would benefit from targeted anti-inflammatory therapy, since conventional therapeutic regimens have limited efficacy in this population.
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Affiliation(s)
- Tamim Sarakpi
- Department of Internal Medicine 4 – Nephrology, Goethe University Frankfurt, Frankfurt am Main, Germany
- Else Kröner-Fresenius-Zentrum for Nephrological Research, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Armir Mesic
- Department of Internal Medicine 4 – Nephrology, Goethe University Frankfurt, Frankfurt am Main, Germany
- Else Kröner-Fresenius-Zentrum for Nephrological Research, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Thimoteus Speer
- Department of Internal Medicine 4 – Nephrology, Goethe University Frankfurt, Frankfurt am Main, Germany
- Else Kröner-Fresenius-Zentrum for Nephrological Research, Goethe University Frankfurt, Frankfurt am Main, Germany
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He Z, Luo J, Lv M, Li Q, Ke W, Niu X, Zhang Z. Characteristics and evaluation of atherosclerotic plaques: an overview of state-of-the-art techniques. Front Neurol 2023; 14:1159288. [PMID: 37900593 PMCID: PMC10603250 DOI: 10.3389/fneur.2023.1159288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 09/28/2023] [Indexed: 10/31/2023] Open
Abstract
Atherosclerosis is an important cause of cerebrovascular and cardiovascular disease (CVD). Lipid infiltration, inflammation, and altered vascular stress are the critical mechanisms that cause atherosclerotic plaque formation. The hallmarks of the progression of atherosclerosis include plaque ulceration, rupture, neovascularization, and intraplaque hemorrhage, all of which are closely associated with the occurrence of CVD. Assessing the severity of atherosclerosis and plaque vulnerability is crucial for the prevention and treatment of CVD. Integrating imaging techniques for evaluating the characteristics of atherosclerotic plaques with computer simulations yields insights into plaque inflammation levels, spatial morphology, and intravascular stress distribution, resulting in a more realistic and accurate estimation of plaque state. Here, we review the characteristics and advancing techniques used to analyze intracranial and extracranial atherosclerotic plaques to provide a comprehensive understanding of atheroma.
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Affiliation(s)
- Zhiwei He
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jiaying Luo
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Mengna Lv
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qingwen Li
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wei Ke
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xuan Niu
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhaohui Zhang
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
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10
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Huang H, Ren P, Zhao Y, Weng H, Jia C, Yu F, Nie Y. Low shear stress induces inflammatory response via CX3CR1/NF-κB signal pathway in human umbilical vein endothelial cells. Tissue Cell 2023; 82:102043. [PMID: 36827822 DOI: 10.1016/j.tice.2023.102043] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/15/2023] [Accepted: 02/16/2023] [Indexed: 02/19/2023]
Abstract
Low shear stress (LSS) has been reported to induce atherosclerosis. However, the molecular mechanisms underlying inflammation induced by LSS are still poorly understood. The objective of our study is the comprehensive identification of molecular circuitry involved in low shear stress-induced inflammation in human umbilical vein endothelial cells (HUVECs) through protein profiling and cell function experiment. In this study, Western blotting analyses revealed a significant increase in the expression of CX3CR1, nucleusP65, intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1) and Interleukin-6 (IL-6), while the expression of cytosolic P65 and IκB has significantly decreased in HUVECs treated with low shear stress. CX3CR1 Sh-RNA was use to reveal its effect on LSS-induced inflammation. Further, specific NF-κB P65 inhibitors pyrrolidinedithiocarbamate (PDTC) were used to reveal the downstream NF-κB P65 exclusively involved in LSS-induced inflammation in HUVECs, this effect can be abrogated by CX3CR1 sh-RNA and NF-κB inhibitors. Monocyte adhesion assay and scratch test revealed low shear stress to promotes adhesion of monocytes and migration of cells, this effect can be abrogated by CX3CR1 sh-RNA and NF-κB inhibitors. LSS was involved in the expression of adhesion molecules and chemokines, which are important for the initiation of endothelial inflammation-related atherosclerosis. Therefore, the cell signaling pathways activated by LSS in endothelial cells may represent therapeutic targets of atherosclerosis.
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Affiliation(s)
- Haozhong Huang
- Department of Cardiovascular Surgery, Affiliated Hospital of the Southwest Medical University, Luzhou 646000, Sichuan, PR China.
| | - Peile Ren
- Department of Physiology, School of Medicine, Xinjiang Medical University, Urumqi 830011, Xinjiang, PR China.
| | - Yiwei Zhao
- The School of Medicine, Huanghe S&T College, Zhengzhou 450063, Henan, PR China.
| | - Huimin Weng
- Department of Cardiovascular Surgery, Affiliated Hospital of the Southwest Medical University, Luzhou 646000, Sichuan, PR China.
| | - Chunsen Jia
- Department of Cardiovascular Surgery, Affiliated Hospital of the Southwest Medical University, Luzhou 646000, Sichuan, PR China.
| | - Fengxu Yu
- Department of Cardiovascular Surgery, Affiliated Hospital of the Southwest Medical University, Luzhou 646000, Sichuan, PR China; Luzhou Key Laboratory of Cardiovascular and Metabolic Diseases, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, PR China; Metabolic Vascular Diseases Key Laboratory of Sichuan Province, Luzhou 646000, Sichuan, PR China.
| | - Yongmei Nie
- Department of Cardiovascular Surgery, Affiliated Hospital of the Southwest Medical University, Luzhou 646000, Sichuan, PR China; Luzhou Key Laboratory of Cardiovascular and Metabolic Diseases, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, PR China; Metabolic Vascular Diseases Key Laboratory of Sichuan Province, Luzhou 646000, Sichuan, PR China.
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11
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Sanders E, Alcaide P. Red light-green light: T-cell trafficking in cardiac and vascular inflammation. Am J Physiol Cell Physiol 2023; 324:C58-C66. [PMID: 36409175 PMCID: PMC9762958 DOI: 10.1152/ajpcell.00421.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/31/2022] [Accepted: 11/14/2022] [Indexed: 11/23/2022]
Abstract
Extravasation of T cells from the bloodstream into inflamed tissues requires interactions between T cells and vascular endothelial cells, a necessary step that allows T cells to exert their effector function during the immune response to pathogens and to sterile insults. This cellular cross talk involves adhesion molecules on both the vascular endothelium and the T cells themselves that function as receptor-ligand pairs to slow down circulating T cells. These will eventually extravasate into sites of inflammation when they receive the correct chemokine signals. Accumulation of T cells within the vascular wall can lead to vessel thickening and vascular disease, whereas T-cell extravasation into the myocardium often leads to cardiac chronic inflammation and adverse cardiac remodeling, hallmarks of heart failure. On the flip side, T-cell trafficking is required for pathogen clearance and to promote tissue repair after injury resulting from cardiac ischemia. Thus, a better understanding of the central players mediating these interactions may help develop novel therapeutics to modulate vascular and cardiac inflammation. Here, we review the most recent literature on pathways that regulate T-cell transendothelial migration, the last step leading to T-cell infiltration into tissues and organs in the context of vascular and cardiac inflammation. We discuss new potential avenues to therapeutically modulate these pathways to enhance or prevent immune cell infiltration in cardiovascular disease.
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Affiliation(s)
- Erin Sanders
- Department of Immunology, Tufts University School of Medicine, Boston, Massachusetts
- Cell, Molecular, and Developmental Biology Program, Graduate School of Biomedical Sciences, Tufts University School of Medicine, Boston, Massachusetts
| | - Pilar Alcaide
- Department of Immunology, Tufts University School of Medicine, Boston, Massachusetts
- Cell, Molecular, and Developmental Biology Program, Graduate School of Biomedical Sciences, Tufts University School of Medicine, Boston, Massachusetts
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12
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Feria MG, Chang C, Ticona E, Moussa A, Zhang B, Ballena I, Azañero R, Ticona C, De Cecco CN, Fichtenbaum CJ, O’Donnell RE, La Rosa A, Sanchez J, Andorf S, Atehortua L, Katz JD, Chougnet CA, Deepe GS, Huaman MA. Pro-Inflammatory Alterations of Circulating Monocytes in Latent Tuberculosis Infection. Open Forum Infect Dis 2022; 9:ofac629. [PMID: 36570965 PMCID: PMC9772871 DOI: 10.1093/ofid/ofac629] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/17/2022] [Indexed: 11/21/2022] Open
Abstract
Background Latent tuberculosis infection (LTBI) has been associated with increased cardiovascular risk. We investigated the activation and pro-inflammatory profile of monocytes in individuals with LTBI and their association with coronary artery disease (CAD). Methods Individuals 40-70 years old in Lima, Peru, underwent QuantiFERON-TB testing to define LTBI, completed a coronary computed tomography angiography to evaluate CAD, and provided blood for monocyte profiling using flow cytometry. Cells were stimulated with lipopolysaccharide to assess interleukin-6 (IL-6) and tumor necrosis factor (TNF)-α responses. Results The clinical characteristics of the LTBI (n = 28) and non-LTBI (n = 41) groups were similar. All monocyte subsets from LTBI individuals exhibited higher mean fluorescence intensity (MFI) of CX3CR1 and CD36 compared with non-LTBI individuals. LTBI individuals had an increased proportion of nonclassical monocytes expressing IL-6 (44.9 vs 26.9; P = .014), TNF-α (62.3 vs 35.1; P = .014), and TNF-α+IL-6+ (43.2 vs 36.6; P = .042). Among LTBI individuals, CAD was associated with lower CX3CR1 MFI on classical monocytes and lower CD36 MFI across all monocyte subsets. In multivariable analyses, lower CD36 MFI on total monocytes (b = -0.17; P = .002) and all subsets remained independently associated with CAD in LTBI. Conclusions Individuals with LTBI have distinct monocyte alterations suggestive of an exacerbated inflammatory response and tissue migration. Whether these alterations contribute to cardiovascular disease pathogenesis warrants further investigation.
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Affiliation(s)
- Manuel G Feria
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Cecilia Chang
- Asociacion Civil Impacta Salud y Educacion, Lima, Peru
| | - Eduardo Ticona
- Hospital Nacional Dos de Mayo, Lima, Peru
- Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Anissa Moussa
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Bin Zhang
- Division of Biostatistics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, USA
| | | | | | | | - Carlo N De Cecco
- Division of Cardiothoracic Imaging, Department of Radiology and Imaging Sciences, Emory University, Atlanta, Georgia, USA
| | - Carl J Fichtenbaum
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Robert E O’Donnell
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | | | - Jorge Sanchez
- Asociacion Civil Impacta Salud y Educacion, Lima, Peru
- Centro de Investigaciones Tecnologicas, Biomedicas y Medioambientales, Callao, Peru
| | - Sandra Andorf
- Division of Biostatistics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, USA
- Divisions of Biomedical Informatics and of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Laura Atehortua
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- Graduate Program in Immunology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, Ohio, USA
| | - Jonathan D Katz
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- Graduate Program in Immunology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, Ohio, USA
| | - Claire A Chougnet
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- Graduate Program in Immunology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, Ohio, USA
| | - George S Deepe
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio, USA
- Graduate Program in Immunology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, Ohio, USA
| | - Moises A Huaman
- Correspondence: Moises A. Huaman, MD, MSc, Department of Internal Medicine, University of Cincinnati, 200 Albert Sabin Way, Rm 3112, Cincinnati, OH 45267-0405 ()
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13
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Pan M, Zhou P, Guo J, An G, Liu Z, Du L, Jin X. Elevated Neutrophil Counts, Triglycerides, Monocyte/High-Density Lipoprotein Ratios, and Lower High-Density Lipoprotein in Patients with Retinal Vein Occlusion. Ophthalmic Res 2022; 66:265-271. [PMID: 36223733 DOI: 10.1159/000527446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/05/2022] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The aim of the study was to evaluate associations of peripheral blood immune cells and blood lipid profile levels with retinal vein occlusion (RVO). METHODS This retrospective study included 127 patients with RVO and 108 controls. Patients with RVO were divided into branch RVO (BRVO), central RVO (CRVO), ischemic RVO, or nonischemic RVO groups. Medical records were collected and analyzed. RESULTS The RVO group had higher mean neutrophil, triglyceride (TG), and monocyte/high-density lipoprotein (HDL) ratio (MHR) levels and lower HDL levels (p = 0.037, p < 0.001, p = 0.004, and p = 0.002, respectively). TG and MHR levels were significantly higher in the BRVO and CRVO groups compared with the control group (p < 0.001 and p = 0.016, respectively), but there was no difference in BRVO and CRVO group (p = 0.972 and p = 0.916, respectively). Mean HDL levels were significantly lower in the BRVO and CRVO groups than in the control group (p = 0.005), but the difference between the BRVO group and CRVO group was not significant (p = 0.290). Neutrophils, TG, and MHR were independent risk factors for RVO. HDL was an independent protective factor for RVO. Age was an independent risk factor for ischemic RVO. CONCLUSIONS Lower HDL, and higher neutrophil, TG, and MHR levels are associated with RVO. Age is an independent risk factor for ischemic RVO.
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Affiliation(s)
- Meng Pan
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Henan Province Eye Hospital, Henan International Joint Research Laboratory for Ocular Immunology and Retinal Injury Repair, Zhengzhou, China,
| | - Pengyi Zhou
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Henan Province Eye Hospital, Henan International Joint Research Laboratory for Ocular Immunology and Retinal Injury Repair, Zhengzhou, China
| | - Ju Guo
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Henan Province Eye Hospital, Henan International Joint Research Laboratory for Ocular Immunology and Retinal Injury Repair, Zhengzhou, China
| | - Guangqi An
- Department of Ophthalmology, The Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Zhenhui Liu
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Henan Province Eye Hospital, Henan International Joint Research Laboratory for Ocular Immunology and Retinal Injury Repair, Zhengzhou, China
| | - Liping Du
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Henan Province Eye Hospital, Henan International Joint Research Laboratory for Ocular Immunology and Retinal Injury Repair, Zhengzhou, China
| | - Xuemin Jin
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Henan Province Eye Hospital, Henan International Joint Research Laboratory for Ocular Immunology and Retinal Injury Repair, Zhengzhou, China
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CXCR6 Mediates Pressure Overload-Induced Aortic Stiffness by Increasing Macrophage Recruitment and Reducing Exosome-miRNA29b. J Cardiovasc Transl Res 2022; 16:271-286. [PMID: 36018423 DOI: 10.1007/s12265-022-10304-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 08/17/2022] [Indexed: 10/15/2022]
Abstract
Aortic stiffness is an independent risk factor for aortic diseases such as aortic dissection which commonly occurred with aging and hypertension. Chemokine receptor CXCR6 is critically involved in vascular inflammation and remodeling. Here, we investigated whether and how CXCR6 plays a role in aortic stiffness caused by pressure overload. CXCR6-/- and WT mice underwent transverse aortic constriction (TAC) surgery for 8 weeks. CXCR6 deficiency significantly improved TAC-induced aortic remodeling and endothelial dysfunction by decreasing CD11c+ macrophage infiltration, suppressing VCAM-1 and ICAM-1, reducing collagen deposition, and downregulating MMP12 and osteopontin in the aorta. Consistently, blocking the CXCL16/CXCR6 axis also reduced aortic accumulation of CD11c+ macrophages and vascular stiffness but without affecting the release of TNF-α and IL-6 from the aorta. Furthermore, pressure overload inhibited aortic release of exosomes, which could be reversed by suppressing CXCR6 or CXCL16. Inhibition of exosome release by GW4869 significantly aggravated TAC-induced aortic calcification and stiffness. By exosomal microRNA microarray analysis, we found that microRNA-29b was significantly reduced in aortic endothelial cells (AECs) receiving TAC. Intriguingly, blocking the CXCL16/CXCR6 axis restored the expression of miR-29b in AECs. Finally, overexpression of miR-29b significantly increased eNOS and reduced MMPs and collagen in AECs. By contrast, antagonizing miR-29b in vivo further enhanced TAC-induced expressions of MMP12 and osteopontin, aggravated aortic fibrosis, calcification, and stiffness. Our study demonstrated a key role of the CXCL16/CXCR6 axis in macrophage recruitment and macrophage-mediated aortic stiffness under pressure overload through an exosome-miRNAs-dependent manner.
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15
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Li Z, Qin Z, Kong X, Chen B, Hu W, Lin Z, Feng Y, Li H, Wan Q, Li S. CCL14 exacerbates intraplaque vulnerability by promoting neovascularization in the human carotid plaque. J Stroke Cerebrovasc Dis 2022; 31:106670. [PMID: 35973397 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/29/2022] [Accepted: 07/17/2022] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To examine the role of CCL14 in the neovascularization process and vulnerability progression within carotid plaques by investigating the mechanism of CCL14 regulation of VEGF-A. METHODS We first performed histological analysis and immunohistochemical staining of human carotid plaque tissue to detect the expression of CCL14, JAK2, STAT3 and VEGF-A. We next examined the protein expression of CCL14, VEGF-A, JAK2, STAT3, and phosphorylation of JAK2 and STAT3 in human carotid atherosclerotic plaques by Western blotting. Finally, we performed in vitro culture of human umbilical vein endothelial cells (HUVEC). In the tube formation assay of HUVEC, we added CCL14 siRNA or VEGF-A siRNA to the culture medium using lentiviral transfection to knock down CCL14 or VEGF-A and grouped them for control assays, and detected the changes in the expression of the above proteins using Western blotting. RESULTS Histological and Western blotting analysis of human carotid plaque samples showed that the expression of CCL14 and VEGF-A was higher in the vulnerable plaques than in stable plaques. In the in vitro cultures of HUVEC, CCL14 was found to increase the number and length of intercellularly generated tubular structures. CCL14 increases VEGF-A expression via activating JAK2/STAT3 signaling. CONCLUSION In the human carotid plaques, CCL14 promotes angiogenesis by upregulation of VEGF-A via JAK2/STAT3 pathway and thus drives the progression of carotid plaques vulnerability.
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Affiliation(s)
- Zhuo Li
- Neurosurgery, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, China
| | - Zhen Qin
- Neurosurgery, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, China
| | - Xiangyi Kong
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, Qingdao University, 308 Ningxia Road, Qingdao, China
| | - Baiqiang Chen
- Neurosurgery, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, China
| | - Wenjie Hu
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, Qingdao University, 308 Ningxia Road, Qingdao, China
| | - Zhiqi Lin
- Guangzhou Red Cross Hospital, affiliated with Jinan University, 396 Tongfu Middle Road, Guangzhou, China
| | - Yugong Feng
- Neurosurgery, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, China
| | - Huanting Li
- Neurosurgery, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, China
| | - Qi Wan
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, Qingdao University, 308 Ningxia Road, Qingdao, China
| | - Shifang Li
- Neurosurgery, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, China.
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Shi X, Wu H, Liu Y, Huang H, Liu L, Yang Y, Jiang T, Zhou M, Dai M. Inhibiting vascular smooth muscle cell proliferation mediated by osteopontin via regulating gut microbial lipopolysaccharide: A novel mechanism for paeonol in atherosclerosis treatment. Front Pharmacol 2022; 13:936677. [PMID: 36034838 PMCID: PMC9403310 DOI: 10.3389/fphar.2022.936677] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 07/05/2022] [Indexed: 11/15/2022] Open
Abstract
Background: Although the gut microbiota is involved in metabolic disease such as atherosclerosis, the underlying mechanism remains elusive. Paeonol (Pae) is a natural phenolic compound isolated from Cortex Moutan, which exhibits anti-atherosclerotic effects. Our previous research demonstrated gut microbiota as a site of Pae action. However, the mechanism by which Pae exerts its anti-atherosclerotic effect by the regulation of gut microbiota remains unclear. Objective: To investigate a potential mechanistic link between the gut microbial lipopolysaccharide (LPS) and vascular smooth muscle cell (VSMC) proliferation in atherosclerosis progression and explore the possible role of Pae. Methods: Experimental atherosclerosis was established in ApoE−/− mice, and the atherosclerosis mice were treated with Pae for 4 weeks before being sacrificed for analyses while conducting fecal microbiota transplantation (FMT). The plaque area, levels of serum LPS, expressions of inflammatory factors in serum or aorta, and intestinal barrier permeability were determined. VSMCs were co-cultured with THP-1 cells. CCK-8 assay and EdU staining were performed to assess the proliferative capacity of VSMCs. Immunofluorescence staining was performed to observe the nuclear transfer of p65. Western blotting was used to detect the candidate protein expression level, and quantitative real-time PCR (qRT-PCR) was used to detect the mRNA expression level in tissues or cells of each group. Results: During atherosclerosis progression, gut dysbiosis leads to the peripheral accumulation of gut microbial LPS, which acts as a trigger to stimulate osteopontin (OPN) production from circulating monocytes, inducing cell-to-cell crosstalk to promote VSMC proliferation in the aorta. Importantly, the elevation of LPS and OPN concentrations in the blood was also observed in patients with atherosclerosis. Pae could significantly improve atherosclerosis, suppress gut microbial LPS accumulation, and inhibit monocyte/macrophage activation and VSMC proliferation. Conclusions: The present study provides a mechanistic scenario for how long-term stimulation of gut microbial LPS in circulating blood generates a pathological secondary response that leads to abnormal proliferation of VSMCs using high OPN expression in circulating monocytes and suggests a novel strategy for atherosclerosis therapy by remodeling the gut microbiota.
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Affiliation(s)
- Xiaoyan Shi
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Hongfei Wu
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Key Laboratory for Research and Development of Traditional Chinese Medicine, Hefei, China
| | - Yarong Liu
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Key Laboratory for Research and Development of Traditional Chinese Medicine, Hefei, China
| | - Hanwen Huang
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Ling Liu
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Yulong Yang
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Tingting Jiang
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Min Zhou
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Min Dai
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Key Laboratory for Research and Development of Traditional Chinese Medicine, Hefei, China
- *Correspondence: Min Dai,
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Gutierrez-Huerta CA, Turner BS, Claudel SE, Farmer N, Islam R, Mitchell VM, Collins BS, Baumer Y, Remaley AT, Powell-Wiley TM. LDL associates with pro-inflammatory monocyte subset differentiation and increases in chemokine receptor profile expression in African Americans. Int J Cardiol 2022; 358:88-93. [PMID: 35436557 PMCID: PMC9120048 DOI: 10.1016/j.ijcard.2022.04.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 04/06/2022] [Accepted: 04/12/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND In the United States, African Americans (AAs) have greater risk for Class III obesity and cardiovascular disease (CVD). Previous reports suggest that AAs have a different immune cell profile when compared to Caucasians. METHODS The immune cell profile of AAs was characterized by flow cytometry using two experimental setups: ex vivo (N = 40) and in vitro (N = 10). For ex vivo experiments, PBMC were treated with participant serum to understand how lipid contents may contribute to monocyte phenotypic differences. For in vitro experiments, monocytes were low-density lipoprotein (LDL)- or vehicle-treated for four hours and subsequently analyzed by flow cytometry and RT-qPCR. RESULTS When PBMCs were treated with participant sera, subsequent multivariable regression analysis revealed that serum triglycerides and LDL levels were associated with monocyte subset differences. In vitro LDL treatment of monocytes induced a phenotypic switch in monocytes away from classical monocytes accompanied by subset-specific chemokine receptor CCR2 and CCR5 expression changes. These observed changes are partially translation-dependent as determined by co-incubation with cycloheximide. CONCLUSIONS LDL treatment of monocytes induces a change in monocyte subsets and increases CCR2/CCR5 expression in a subset-specific manner. Understanding the molecular mechanisms could prove to have CVD-related therapeutic benefits, especially in high-risk populations with hyperlipidemia and increased risk for CVD.
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Affiliation(s)
- Cristhian A Gutierrez-Huerta
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Briana S Turner
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Sophie E Claudel
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Nicole Farmer
- Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
| | - Rafique Islam
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Valerie M Mitchell
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Billy S Collins
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Yvonne Baumer
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Alan T Remaley
- Lipoprotein Metabolism Section, Translational Vascular Medicine Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Tiffany M Powell-Wiley
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA; Intramural Research Program, National Institute on Minority Health and Health Disparities, National Institutes of Health, Bethesda, MD, USA.
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18
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Pu L, Meng Q, Li S, Wang Y, Sun B, Liu B, Li F. Laminar shear stress alleviates monocyte adhesion and atherosclerosis development via miR-29b-3p/CX3CL1 axis regulation. J Cell Sci 2022; 135:275792. [PMID: 35735031 PMCID: PMC9450891 DOI: 10.1242/jcs.259696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 06/17/2022] [Indexed: 11/24/2022] Open
Abstract
Laminar shear stress (Lss) is an important anti-atherosclerosis (anti-AS) factor, but its mechanism network is not clear. Therefore, this study aimed to identify how Lss acts against AS formation from a new perspective. In this study, we analyzed high-throughput sequencing data from static and Lss-treated human aortic and human umbilical vein endothelial cells (HAECs and HUVECs, respectively) and found that the expression of CX3CL1, which is a target gene closely related to AS development, was lower in the Lss group. Lss alleviated the inflammatory response in TNF-α (also known as TNF)-activated HAECs by regulating the miR-29b-3p/CX3CL1 axis, and this was achieved by blocking nuclear factor (NF)-κB signaling. In complementary in vivo experiments, a high-fat diet (HFD) induced inflammatory infiltration and plaque formation in the aorta, both of which were significantly reduced after injection of agomir-miRNA-29b-3p via the tail vein into HFD-fed ApoE−/− mice. In conclusion, this study reveals that the Lss-sensitive miR-29b-3p/CX3CL1 axis is an important regulatory target that affects vascular endothelial inflammation and AS development. Our study provides new insights into the prevention and treatment of AS. Summary: The laminar shear stress-sensitive miR-29b-3p/CX3CL1 axis significantly inhibits monocyte adhesion to activated human aortic endothelial cells, and alleviates local inflammation and plaque formation in ApoE−/− mice fed a high-fat diet.
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Affiliation(s)
- Luya Pu
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Qingyu Meng
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Shuai Li
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Yaru Wang
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Banghao Sun
- Department of Immunology, School of Basic Medical Sciences, Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Bin Liu
- Cardiovascular Disease Center, The First Hospital of Jilin University, Changchun, China
| | - Fan Li
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China.,Engineering Research Center for Medical Biomaterials of Jilin Province, Jilin University, Changchun, China.,Key Laboratory for Health Biomedical Materials of Jilin Province, Jilin University, Changchun, China.,State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang, China.,The Key Laboratory for Bionics Engineering, Ministry of Education, Jilin University, Changchun, China
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19
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Schmitz J, Brauns N, Hüsing AM, Flechsig M, Glomb T, Bräsen JH, Haller H, von Vietinghoff S. Renal medullary osmolytes NaCl and urea differentially modulate human tubular cell cytokine expression and monocyte recruitment. Eur J Immunol 2022; 52:1258-1272. [DOI: 10.1002/eji.202149723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 03/20/2022] [Accepted: 05/06/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Jessica Schmitz
- Nephropathology Unit Institute for Pathology University Clinic and Rheinische Friedrich‐Wilhelms Universität Bonn Bonn Germany
| | - Nicolas Brauns
- Department of Internal Medicine Division of Nephrology and Hypertension University Clinic and Rheinische Friedrich‐Wilhelms Universität Bonn Bonn Germany
| | - Anne M. Hüsing
- Department of Internal Medicine Division of Nephrology and Hypertension University Clinic and Rheinische Friedrich‐Wilhelms Universität Bonn Bonn Germany
| | - Martina Flechsig
- Department of Internal Medicine Division of Nephrology and Hypertension University Clinic and Rheinische Friedrich‐Wilhelms Universität Bonn Bonn Germany
| | - Thorsten Glomb
- Core Facility Transcriptomics Hannover Medical School Hannover Germany
| | - Jan Hinrich Bräsen
- Nephropathology Unit Institute for Pathology University Clinic and Rheinische Friedrich‐Wilhelms Universität Bonn Bonn Germany
| | - Hermann Haller
- Department of Internal Medicine Division of Nephrology and Hypertension University Clinic and Rheinische Friedrich‐Wilhelms Universität Bonn Bonn Germany
| | - Sibylle von Vietinghoff
- Department of Internal Medicine Division of Nephrology and Hypertension University Clinic and Rheinische Friedrich‐Wilhelms Universität Bonn Bonn Germany
- Nephrology Section First Medical Clinic University Clinic and Rheinische Friedrich‐Wilhelms Universität Bonn Bonn Germany
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20
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Evans BR, Yerly A, van der Vorst EPC, Baumgartner I, Bernhard SM, Schindewolf M, Döring Y. Inflammatory Mediators in Atherosclerotic Vascular Remodeling. Front Cardiovasc Med 2022; 9:868934. [PMID: 35600479 PMCID: PMC9114307 DOI: 10.3389/fcvm.2022.868934] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 04/11/2022] [Indexed: 12/23/2022] Open
Abstract
Atherosclerotic vascular disease remains the most common cause of ischemia, myocardial infarction, and stroke. Vascular function is determined by structural and functional properties of the arterial vessel wall, which consists of three layers, namely the adventitia, media, and intima. Key cells in shaping the vascular wall architecture and warranting proper vessel function are vascular smooth muscle cells in the arterial media and endothelial cells lining the intima. Pathological alterations of this vessel wall architecture called vascular remodeling can lead to insufficient vascular function and subsequent ischemia and organ damage. One major pathomechanism driving this detrimental vascular remodeling is atherosclerosis, which is initiated by endothelial dysfunction allowing the accumulation of intimal lipids and leukocytes. Inflammatory mediators such as cytokines, chemokines, and modified lipids further drive vascular remodeling ultimately leading to thrombus formation and/or vessel occlusion which can cause major cardiovascular events. Although it is clear that vascular wall remodeling is an elementary mechanism of atherosclerotic vascular disease, the diverse underlying pathomechanisms and its consequences are still insufficiently understood.
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Affiliation(s)
- Bryce R. Evans
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Anaïs Yerly
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Emiel P. C. van der Vorst
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-University Munich (LMU), Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
- Institute for Molecular Cardiovascular Research (IMCAR) and Interdisciplinary Center for Clinical Research (IZKF), RWTH Aachen University, Aachen, Germany
- Department of Pathology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Centre, Maastricht, Netherlands
| | - Iris Baumgartner
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Sarah Maike Bernhard
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Marc Schindewolf
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Yvonne Döring
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-University Munich (LMU), Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
- *Correspondence: Yvonne Döring
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21
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von Ehr A, Bode C, Hilgendorf I. Macrophages in Atheromatous Plaque Developmental Stages. Front Cardiovasc Med 2022; 9:865367. [PMID: 35548412 PMCID: PMC9081876 DOI: 10.3389/fcvm.2022.865367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 03/31/2022] [Indexed: 11/28/2022] Open
Abstract
Atherosclerosis is the main pathomechanism leading to cardiovascular diseases such as myocardial infarction or stroke. There is consensus that atherosclerosis is not only a metabolic disorder but rather a chronic inflammatory disease influenced by various immune cells of the innate and adaptive immune system. Macrophages constitute the largest population of inflammatory cells in atherosclerotic lesions. They play a critical role in all stages of atherogenesis. The heterogenous macrophage population can be subdivided on the basis of their origins into resident, yolk sac and fetal liver monocyte-derived macrophages and postnatal monocyte-derived, recruited macrophages. Recent transcriptomic analyses revealed that the major macrophage populations in atherosclerosis include resident, inflammatory and foamy macrophages, representing a more functional classification. The aim of this review is to provide an overview of the trafficking, fate, and functional aspects of the different macrophage populations in the "life cycle" of an atheromatous plaque. Understanding the chronic inflammatory state in atherosclerotic lesions is an important basis for developing new therapeutic approaches to abolish lesion growth and promote plaque regression in addition to general cholesterol lowering.
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Affiliation(s)
- Alexander von Ehr
- Department of Cardiology and Angiology, University Heart Center Freiburg-Bad Krozingen, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christoph Bode
- Department of Cardiology and Angiology, University Heart Center Freiburg-Bad Krozingen, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Ingo Hilgendorf
- Department of Cardiology and Angiology, University Heart Center Freiburg-Bad Krozingen, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Institute of Experimental Cardiovascular Medicine, University Heart Center Freiburg-Bad Krozingen, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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22
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Huaman MA, Feria MG, Kityo C, Nalukwago S, Nazzinda R, Zidar DA, Zanni MV, Siedner MJ, Grinspoon SK, Longenecker CT. A Sex-Stratified Analysis of Monocyte Phenotypes Associated with HIV Infection in Uganda. Viruses 2021; 13:v13112135. [PMID: 34834941 PMCID: PMC8620269 DOI: 10.3390/v13112135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/20/2021] [Accepted: 10/20/2021] [Indexed: 12/02/2022] Open
Abstract
Women with HIV may experience higher rates of non-AIDS comorbidities compared to men with HIV, but the underlying mechanisms are not well understood. We investigated sex-related differences in the effects of HIV on monocyte phenotypes within the Ugandan Study of HIV effects on the Myocardium and Atherosclerosis (mUTIMA). Of 133 participants who provided blood for flow cytometry assays, 86 (65%) were women and 91 (68%) were persons living with HIV (PLWH) on antiretroviral therapy. The median age was 57 (interquartile range, 52–63) years. PLWH exhibited a lower proportion of circulating CD14+CD16- classical monocytes (66.3% vs. 75.1%; p < 0.001), and higher proportion of CD14+CD16+ inflammatory monocytes (17% vs. 11.7%; p = 0.005) compared to HIV-uninfected participants. PLWH had an increased expression of the chemokine receptor CX3CR1 in total monocytes (CX3CR1+ monocytes, 24.5% vs. 4.7%; p < 0.001) and monocyte subsets. These findings were generally similar when analyzed by sex, with no significant interactions between sex and HIV status in adjusted models. Our data show that the inflammatory monocyte subset is expanded and monocyte CX3CR1 chemokine receptor expression is enhanced among PLWH, regardless of sex. Whether these parameters differentially affect risk for non-AIDS comorbidities and clinical outcomes in women with HIV requires additional investigation.
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Affiliation(s)
- Moises A. Huaman
- Division of Infectious Diseases, Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA;
- Correspondence:
| | - Manuel G. Feria
- Division of Infectious Diseases, Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA;
| | - Cissy Kityo
- Joint Clinical Research Centre, Kampala P.O. Box 10005, Uganda; (C.K.); (S.N.); (R.N.)
| | - Sophie Nalukwago
- Joint Clinical Research Centre, Kampala P.O. Box 10005, Uganda; (C.K.); (S.N.); (R.N.)
| | - Rashidah Nazzinda
- Joint Clinical Research Centre, Kampala P.O. Box 10005, Uganda; (C.K.); (S.N.); (R.N.)
| | - David A. Zidar
- Division of Cardiology, Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA; (D.A.Z.); (C.T.L.)
- Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA
| | - Markella V. Zanni
- Divisions of Infectious Diseases and Endocrinology, Department of Medicine, Massachusetts General Hospital, Boston, MA 02114, USA; (M.V.Z.); (M.J.S.); (S.K.G.)
- Harvard Medical School, Boston, MA 02115, USA
| | - Mark J. Siedner
- Divisions of Infectious Diseases and Endocrinology, Department of Medicine, Massachusetts General Hospital, Boston, MA 02114, USA; (M.V.Z.); (M.J.S.); (S.K.G.)
- Harvard Medical School, Boston, MA 02115, USA
| | - Steven K. Grinspoon
- Divisions of Infectious Diseases and Endocrinology, Department of Medicine, Massachusetts General Hospital, Boston, MA 02114, USA; (M.V.Z.); (M.J.S.); (S.K.G.)
- Harvard Medical School, Boston, MA 02115, USA
| | - Chris T. Longenecker
- Division of Cardiology, Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA; (D.A.Z.); (C.T.L.)
- University Hospitals Cleveland Medical Center, Cleveland, OH 44106, USA
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23
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Markofski MM, Flynn MG. Elevated circulating CD16+ monocytes and TLR4+ monocytes in older adults with multiple cardiometabolic disease risk factors. Exp Gerontol 2021; 154:111530. [PMID: 34450235 DOI: 10.1016/j.exger.2021.111530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 11/25/2022]
Abstract
We endeavored to examine relationships between circulating monocyte phenotype and cardio-metabolic disease risk, in healthy, older adults. We performed a secondary data analysis on men and women, 55-75 yr, who were assigned to groups based on cardio-metabolic risk factors other than age. Subject in the low risk group (n = 16, 12 females) had fewer than three risk factors. Subjects in the elevated risk group (n = 29, 19 females) had three or more risk factors. Along with baseline screening for fitness and body composition, resting blood samples were assessed for markers of inflammation including: monocyte phenotype (inflammatory monocytes), monocyte cell-surface TLR4 expression, and serum C-reactive protein. The low risk group had a smaller (19.3% difference; p < 0.0001) waist circumference and lower body fat weight (36.3%; p < 0.0001), but higher V̇02max (45.5%; p = 0.0019). There were no mean differences (p > 0.05) between the low and elevated risk groups for BMI, serum cholesterol, fasting glucose, or leg press 1RM. The low risk group had lower CRP (114.7%, p = 0.0002), higher CD14+CD16- (classical) monocytes (6.7%; p = 0.0231) and fewer CD14+CD16+ (inflammatory) monocytes (46.2%; p = 0.0243) than the elevated risk group. The low risk group also had a lower percentage of CD14+CD16- monocytes that were positive for TLR4 (14.0%; p = 0.0328). Older men and women with fewer cardio-metabolic risk factors had lower serum and cellular markers of inflammation and higher aerobic capacity.
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Affiliation(s)
- Melissa M Markofski
- Deparment of Health & Human Performance, University of Houston, 3875 Holman St., Houston, TX 77204, USA.
| | - Michael G Flynn
- HCA South Atlantic, 115 Central Island St., Charleston, SC 29492, USA.
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24
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von Vietinghoff S, Kurts C. Regulation and function of CX3CR1 and its ligand CX3CL1 in kidney disease. Cell Tissue Res 2021; 385:335-344. [PMID: 34009468 PMCID: PMC8523406 DOI: 10.1007/s00441-021-03473-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 05/05/2021] [Indexed: 12/21/2022]
Abstract
Attraction, retention, and differentiation of leukocytes to and within the kidney are governed by chemokines. The chemokine CX3CL1 (fractalkine) and its receptor CX3CR1 are exemplary in this regard as they are highly expressed and further upregulated in a range of kidney diseases. CX3CL1 is chiefly produced by renal endothelium and tubular epithelium, where it promotes leukocyte attraction. Recent data suggest that in addition to established soluble mediators, cellular interactions may enhance CX3CL1 expression. The receptor CX3CR1 is essential in myeloid phagocyte homing to the kidney at homeostasis, after acute cell depletion and in inflammation. CX3CR1 and its ligand are highly regulated in human kidney diseases such as IgA nephritis, systemic lupus erythematosus, and inflammatory conditions such as transplant rejection. A mechanistic role of CX3CR1 has been established in experimental models of nephrotoxic nephritis and renal candidiasis. It is debated in fibrosis. Recent publications demonstrate a role for CX3CR1+ myeloid cells in radio-contrast-agent and sepsis-induced kidney damage. Systemically, circulating CX3CR1+ monocytes reversibly increase in individuals with renal impairment and correlate with their cardiovascular risk. In this review, we discuss role and regulatory mechanisms of the CX3CL1-CX3CR1 axis in both localized and systemic effects of renal inflammation.
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Affiliation(s)
- Sibylle von Vietinghoff
- First Medical Clinic, Nephrology Section, University Clinic of the Rheinische Friedrich Wilhelms University Bonn, Venusberg Campus 1, 53127, Bonn, Germany. .,Institute for Molecular Medicine and Experimental Immunology, University Clinic of the Rheinische Friedrich Wilhelms University Bonn, Biomedical Center II, Venusberg Campus 1, 53127, Bonn, Germany.
| | - Christian Kurts
- Institute for Molecular Medicine and Experimental Immunology, University Clinic of the Rheinische Friedrich Wilhelms University Bonn, Biomedical Center II, Venusberg Campus 1, 53127, Bonn, Germany.
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25
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Gencer S, Evans BR, van der Vorst EP, Döring Y, Weber C. Inflammatory Chemokines in Atherosclerosis. Cells 2021; 10:cells10020226. [PMID: 33503867 PMCID: PMC7911854 DOI: 10.3390/cells10020226] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/18/2021] [Accepted: 01/22/2021] [Indexed: 12/14/2022] Open
Abstract
Atherosclerosis is a long-term, chronic inflammatory disease of the vessel wall leading to the formation of occlusive or rupture-prone lesions in large arteries. Complications of atherosclerosis can become severe and lead to cardiovascular diseases (CVD) with lethal consequences. During the last three decades, chemokines and their receptors earned great attention in the research of atherosclerosis as they play a key role in development and progression of atherosclerotic lesions. They orchestrate activation, recruitment, and infiltration of immune cells and subsequent phenotypic changes, e.g., increased uptake of oxidized low-density lipoprotein (oxLDL) by macrophages, promoting the development of foam cells, a key feature developing plaques. In addition, chemokines and their receptors maintain homing of adaptive immune cells but also drive pro-atherosclerotic leukocyte responses. Recently, specific targeting, e.g., by applying cell specific knock out models have shed new light on their functions in chronic vascular inflammation. This article reviews recent findings on the role of immunomodulatory chemokines in the development of atherosclerosis and their potential for targeting.
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Affiliation(s)
- Selin Gencer
- Institute for Cardiovascular Prevention, Ludwig-Maximilians-University, 80336 Munich, Germany; (S.G.); (E.P.C.v.d.V.); (Y.D.)
| | - Bryce R. Evans
- Department of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (B.R.E.)
| | - Emiel P.C. van der Vorst
- Institute for Cardiovascular Prevention, Ludwig-Maximilians-University, 80336 Munich, Germany; (S.G.); (E.P.C.v.d.V.); (Y.D.)
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 80336 Munich, Germany
- Interdisciplinary Center for Clinical Research (IZKF), Institute for Molecular Cardiovascular Research (IMCAR), RWTH Aachen University, 52074 Aachen, Germany
- Department of Pathology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Yvonne Döring
- Institute for Cardiovascular Prevention, Ludwig-Maximilians-University, 80336 Munich, Germany; (S.G.); (E.P.C.v.d.V.); (Y.D.)
- Department of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (B.R.E.)
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 80336 Munich, Germany
| | - Christian Weber
- Institute for Cardiovascular Prevention, Ludwig-Maximilians-University, 80336 Munich, Germany; (S.G.); (E.P.C.v.d.V.); (Y.D.)
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 80336 Munich, Germany
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Centre, 6229 ER Maastricht, The Netherlands
- Munich Cluster for Systems Neurology (SyNergy), 80336 Munich, Germany
- Correspondence:
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