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Ray AK, Priya A, Malik MZ, Thanaraj TA, Singh AK, Mago P, Ghosh C, Shalimar, Tandon R, Chaturvedi R. A bioinformatics approach to elucidate conserved genes and pathways in C. elegans as an animal model for cardiovascular research. Sci Rep 2024; 14:7471. [PMID: 38553458 PMCID: PMC10980734 DOI: 10.1038/s41598-024-56562-9] [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: 12/07/2023] [Accepted: 03/07/2024] [Indexed: 04/02/2024] Open
Abstract
Cardiovascular disease (CVD) is a collective term for disorders of the heart and blood vessels. The molecular events and biochemical pathways associated with CVD are difficult to study in clinical settings on patients and in vitro conditions. Animal models play a pivotal and indispensable role in CVD research. Caenorhabditis elegans, a nematode species, has emerged as a prominent experimental organism widely utilized in various biomedical research fields. However, the specific number of CVD-related genes and pathways within the C. elegans genome remains undisclosed to date, limiting its in-depth utilization for investigations. In the present study, we conducted a comprehensive analysis of genes and pathways related to CVD within the genomes of humans and C. elegans through a systematic bioinformatic approach. A total of 1113 genes in C. elegans orthologous to the most significant CVD-related genes in humans were identified, and the GO terms and pathways were compared to study the pathways that are conserved between the two species. In order to infer the functions of CVD-related orthologous genes in C. elegans, a PPI network was constructed. Orthologous gene PPI network analysis results reveal the hubs and important KRs: pmk-1, daf-21, gpb-1, crh-1, enpl-1, eef-1G, acdh-8, hif-1, pmk-2, and aha-1 in C. elegans. Modules were identified for determining the role of the orthologous genes at various levels in the created network. We also identified 9 commonly enriched pathways between humans and C. elegans linked with CVDs that include autophagy (animal), the ErbB signaling pathway, the FoxO signaling pathway, the MAPK signaling pathway, ABC transporters, the biosynthesis of unsaturated fatty acids, fatty acid metabolism, glutathione metabolism, and metabolic pathways. This study provides the first systematic genomic approach to explore the CVD-associated genes and pathways that are present in C. elegans, supporting the use of C. elegans as a prominent animal model organism for cardiovascular diseases.
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Affiliation(s)
- Ashwini Kumar Ray
- Department of Environmental Studies, University of Delhi, New Delhi, India.
| | - Anjali Priya
- Department of Environmental Studies, University of Delhi, New Delhi, India
| | - Md Zubbair Malik
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute, Kuwait City, Kuwait.
| | | | - Alok Kumar Singh
- Department of Zoology, Ramjas College, University of Delhi, New Delhi, India
| | - Payal Mago
- Shaheed Rajguru College of Applied Science for Women, University of Delhi, New Delhi, India
- Campus of Open Learning, University of Delhi, New Delhi, India
| | - Chirashree Ghosh
- Department of Environmental Studies, University of Delhi, New Delhi, India
| | - Shalimar
- Department of Gastroenterology, All India Institute of Medical Science, New Delhi, India
| | - Ravi Tandon
- Laboratory of AIDS Research and Immunology, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Rupesh Chaturvedi
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
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Ray AK, Priya A, Malik MZ, Thanaraj TA, Singh AK, Mago P, Ghosh C, Shalimar, Tandon R, Chaturvedi R. Conserved Cardiovascular Network: Bioinformatics Insights into Genes and Pathways for Establishing Caenorhabditis elegans as an Animal Model for Cardiovascular Diseases. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.24.573256. [PMID: 38234826 PMCID: PMC10793405 DOI: 10.1101/2023.12.24.573256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Cardiovascular disease (CVD) is a collective term for disorders of the heart and blood vessels. The molecular events and biochemical pathways associated with CVD are difficult to study in clinical settings on patients and in vitro conditions. Animal models play a pivotal and indispensable role in cardiovascular disease (CVD) research. Caenorhabditis elegans , a nematode species, has emerged as a prominent experimental organism widely utilised in various biomedical research fields. However, the specific number of CVD-related genes and pathways within the C. elegans genome remains undisclosed to date, limiting its in-depth utilisation for investigations. In the present study, we conducted a comprehensive analysis of genes and pathways related to CVD within the genomes of humans and C. elegans through a systematic bioinformatic approach. A total of 1113 genes in C. elegans orthologous to the most significant CVD-related genes in humans were identified, and the GO terms and pathways were compared to study the pathways that are conserved between the two species. In order to infer the functions of CVD-related orthologous genes in C. elegans, a PPI network was constructed. Orthologous gene PPI network analysis results reveal the hubs and important KRs: pmk-1, daf-21, gpb-1, crh-1, enpl-1, eef-1G, acdh-8, hif-1, pmk-2, and aha-1 in C. elegans. Modules were identified for determining the role of the orthologous genes at various levels in the created network. We also identified 9 commonly enriched pathways between humans and C. elegans linked with CVDs that include autophagy (animal), the ErbB signalling pathway, the FoxO signalling pathway, the MAPK signalling pathway, ABC transporters, the biosynthesis of unsaturated fatty acids, fatty acid metabolism, glutathione metabolism, and metabolic pathways. This study provides the first systematic genomic approach to explore the CVD-associated genes and pathways that are present in C. elegans, supporting the use of C. elegans as a prominent animal model organism for cardiovascular diseases.
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Deng C, Li M, Liu Y, Yan C, He Z, Chen ZY, Zhu H. Cholesterol Oxidation Products: Potential Adverse Effect and Prevention of Their Production in Foods. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18645-18659. [PMID: 38011512 DOI: 10.1021/acs.jafc.3c05158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Cholesterol oxidation products (COPs) are a group of substances formed during food processing. COPs in diet is a health concern because they may affect human health in association with the risk of various diseases including atherosclerosis, Alzheimer's disease, age-related macular degeneration, diabetes, and chronic gastrointestinal inflammatory colitis. Production of COPs in foods can be affected by many factors such as temperature, pH, light, oxygen, water, carbohydrates, fatty acids, proteins, and metal cations. The key issue is preventing its generation in foods. Some COPs can also be produced in vivo by both nonenzymatic and enzymatic-catalyzed oxidation reactions. Currently, a number of natural antioxidants such as catechins, flavonoids, and other polyphenols have been proven to inhibit the generation of COPs. In addition, measures taken during food processing can also minimize the production of COPs, such as the Maillard reaction and marinating food with plant polyphenol-rich seasonings. In conclusion, a comprehensive approach encompassing the suppression on COPs generation and implementation of processing measures is imperative to safeguard human health against the production of COPs in the food chain.
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Affiliation(s)
- Chuanling Deng
- School of Food Science and Engineering/Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing/National Technical Center (Foshan) for Quality Control of Famous and Special Agricultural Products (CAQS-GAP-KZZX043), Foshan University, Foshan 528000, Guangdong China
| | - Mingxuan Li
- School of Food Science and Engineering/Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing/National Technical Center (Foshan) for Quality Control of Famous and Special Agricultural Products (CAQS-GAP-KZZX043), Foshan University, Foshan 528000, Guangdong China
- School of Life Sciences, South China Agricultural University, Guangzhou 510000, Guangdong China
| | - Yang Liu
- School of Food Science and Engineering/Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing/National Technical Center (Foshan) for Quality Control of Famous and Special Agricultural Products (CAQS-GAP-KZZX043), Foshan University, Foshan 528000, Guangdong China
| | - Chi Yan
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT 999077, Hong Kong China
| | - Zouyan He
- School of Public Health, Guangxi Medical University, Nanning 530021, Guangxi China
| | - Zhen-Yu Chen
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT 999077, Hong Kong China
| | - Hanyue Zhu
- School of Food Science and Engineering/Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing/National Technical Center (Foshan) for Quality Control of Famous and Special Agricultural Products (CAQS-GAP-KZZX043), Foshan University, Foshan 528000, Guangdong China
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Kai T, Hirayama S, Soda S, Fuwa F, Nakagawa S, Ueno T, Hori A, Miida T. Higher concentration of 25-hydroxycholesterol in treatment-naïve patients with type 2 diabetes compared to healthy individuals. J Clin Lipidol 2023; 17:384-391. [PMID: 37149432 DOI: 10.1016/j.jacl.2023.04.004] [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: 07/15/2022] [Revised: 04/14/2023] [Accepted: 04/16/2023] [Indexed: 05/08/2023]
Abstract
BACKGROUND Oxysterols are cholesterol oxidation derivatives with diverse biological activities. However, little is known about the oxysterol levels in treatment-naïve patients with type 2 diabetes. OBJECTIVE We utilized gas chromatography-mass spectrometry to investigate the potential association between oxysterol concentrations and type 2 diabetes and atherosclerosis in treatment-naïve patients diagnosed with type 2 diabetes. METHODS This case-control study enrolled 53 eligible patients with type 2 diabetes and 50 healthy volunteers. We compared serum oxysterol concentrations between the two groups; we examined the correlation between the oxysterol concentrations and the carotid plaque score in the type 2 diabetes group. RESULTS Univariate analysis revealed significant differences in the concentrations of oxysterols (i.e., cholesterol-5α, 6α-epoxide; cholesterol-5β, 6β-epoxide; 7β-hydroxycholesterol; and 25-hydroxycholesterol [25-HC]) and other cardiovascular risk factors between the two groups. The 25-HC concentration was almost twofold greater in the type 2 diabetes group than in the healthy volunteers (median [interquartile range]: 8.52 [6.37-11.26] vs. 4.58 [3.45-5.44] ng/mL). After adjusting for multiple covariates, such as age, body mass index, mean arterial pressure, and triglyceride, low-density lipoprotein-cholesterol, and high-density lipoprotein-cholesterol levels, only the concentration of 25-HC showed a significant association with type 2 diabetes. However, the univariate analysis failed to demonstrate any significant correlation between oxysterol concentrations and the carotid plaque score among individuals with type 2 diabetes. CONCLUSIONS The levels of various oxysterols differ between treatment-naïve patients with type 2 diabetes and healthy individuals; the 25-HC level differs the most prominently.
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Affiliation(s)
- Takahito Kai
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Satoshi Hirayama
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan; Health Care Center, Tokyo Gakugei University, Nukuikita-machi 4-1-1, Koganei, Tokyo 184-8501, Japan.
| | - Satoshi Soda
- Department of Endocrinology and Metabolism, Niigata City General Hospital, Shumoku 463-7, Niigata 950-1197, Japan
| | - Fumiko Fuwa
- Department of Bioanalytical Chemistry, Niigata University of Pharmacy and Applied Life Sciences, Higashijima 265-1, Akiha-ku, Niigata 956-8603, Japan
| | - Saori Nakagawa
- Department of Bioanalytical Chemistry, Niigata University of Pharmacy and Applied Life Sciences, Higashijima 265-1, Akiha-ku, Niigata 956-8603, Japan
| | - Tsuyoshi Ueno
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Atsushi Hori
- Department of Clinical Laboratory Technology, Juntendo University, Faculty of Medical Science, Hinode 6-8-1, Urayasu, Chiba 279-0013, Japan
| | - Takashi Miida
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan; Department of Clinical Laboratory Technology, Juntendo University, Faculty of Medical Science, Hinode 6-8-1, Urayasu, Chiba 279-0013, Japan
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An Unexpected Enzyme in Vascular Smooth Muscle Cells: Angiotensin II Upregulates Cholesterol-25-Hydroxylase Gene Expression. Int J Mol Sci 2023; 24:ijms24043968. [PMID: 36835391 PMCID: PMC9965395 DOI: 10.3390/ijms24043968] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/10/2023] [Accepted: 02/14/2023] [Indexed: 02/18/2023] Open
Abstract
Angiotensin II (AngII) is a vasoactive peptide hormone, which, under pathological conditions, contributes to the development of cardiovascular diseases. Oxysterols, including 25-hydroxycholesterol (25-HC), the product of cholesterol-25-hydroxylase (CH25H), also have detrimental effects on vascular health by affecting vascular smooth muscle cells (VSMCs). We investigated AngII-induced gene expression changes in VSMCs to explore whether AngII stimulus and 25-HC production have a connection in the vasculature. RNA-sequencing revealed that Ch25h is significantly upregulated in response to AngII stimulus. The Ch25h mRNA levels were elevated robustly (~50-fold) 1 h after AngII (100 nM) stimulation compared to baseline levels. Using inhibitors, we specified that the AngII-induced Ch25h upregulation is type 1 angiotensin II receptor- and Gq/11 activity-dependent. Furthermore, p38 MAPK has a crucial role in the upregulation of Ch25h. We performed LC-MS/MS to identify 25-HC in the supernatant of AngII-stimulated VSMCs. In the supernatants, 25-HC concentration peaked 4 h after AngII stimulation. Our findings provide insight into the pathways mediating AngII-induced Ch25h upregulation. Our study elucidates a connection between AngII stimulus and 25-HC production in primary rat VSMCs. These results potentially lead to the identification and understanding of new mechanisms in the pathogenesis of vascular impairments.
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Cho SJ, Pronko A, Yang J, Pagan K, Stout-Delgado H. Role of Cholesterol 25-Hydroxylase (Ch25h) in Mediating Innate Immune Responses to Streptococcus pneumoniae Infection. Cells 2023; 12:570. [PMID: 36831236 PMCID: PMC9953875 DOI: 10.3390/cells12040570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/02/2023] [Accepted: 02/09/2023] [Indexed: 02/12/2023] Open
Abstract
Alveolar macrophages (AM) are long-lived tissue-resident innate immune cells of the airways. AM are key effectors of recognition, initiation, and resolution of the host defense against microbes and play an essential role in mediating host responses to Streptococcus pneumoniae infection. Lipid metabolism in AM can significantly impact cellular function and biology. Dysregulated metabolism contributes to an accumulation of lipids, unfolded protein response induction, and inflammatory cytokine production. Our study was designed to investigate the impact of Ch25h on mediating innate immune responses by macrophages during S. pneumoniae infection. Using wild-type and Ch25-/- mice, we examined the role of cholesterol metabolism on inflammatory cytokine production and bacterial clearance. Our results demonstrate that Ch25h plays an important role in the initiation and intensity of cytokine and chemokine production in the lung during S. pneumoniae infection. In the absence of Ch25h, there was enhanced phagocytosis and bacterial clearance. Taken together, our findings demonstrate the important role of Ch25h in modulating host responsiveness to S. pneumoniae infection.
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Ejam SS, Saleh RO, Catalan Opulencia MJ, Najm MA, Makhmudova A, Jalil AT, Abdelbasset WK, Al-Gazally ME, Hammid AT, Mustafa YF, Sergeevna SE, Karampoor S, Mirzaei R. Pathogenic role of 25-hydroxycholesterol in cancer development and progression. Future Oncol 2022; 18:4415-4442. [PMID: 36651359 DOI: 10.2217/fon-2022-0819] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Cholesterol is an essential lipid that serves several important functions, including maintaining the homeostasis of cells, acting as a precursor to bile acid and steroid hormones and preserving the stability of membrane lipid rafts. 25-hydroxycholesterol (25-HC) is a cholesterol derivative that may be formed from cholesterol. 25-HC is a crucial component in various biological activities, including cholesterol metabolism. In recent years, growing evidence has shown that 25-HC performs a critical function in the etiology of cancer, infectious diseases and autoimmune disorders. This review will summarize the latest findings regarding 25-HC, including its biogenesis, immunomodulatory properties and role in innate/adaptive immunity, inflammation and the development of various types of cancer.
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Affiliation(s)
| | - Raed Obaid Saleh
- Department of Pharmacy, Al-Maarif University College, Al-Anbar, Iraq
| | | | - Mazin Aa Najm
- Pharmaceutical Chemistry Department, College of Pharmacy, Al-Ayen University, Thi-Qar, Iraq
| | - Aziza Makhmudova
- Department of Social Sciences & Humanities, Samarkand State Medical Institute, Samarkand, Uzbekistan
- Department of Scientific Affairs, Tashkent State Dental Institute, Makhtumkuli Street 103, Tashkent, 100047, Uzbekistan
| | - Abduladheem Turki Jalil
- Medical Laboratories Techniques Department, Al-Mustaqbal University College, Babylon, Hilla, 51001, Iraq
| | - Walid Kamal Abdelbasset
- Department of Health & Rehabilitation Sciences, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Al Kharj, Saudi Arabia
- Department of Physical Therapy, Kasr Al-Aini Hospital, Cairo University, Giza, Egypt
| | | | - Ali Thaeer Hammid
- Computer Engineering Techniques Department, Faculty of Information Technology, Imam Ja'afar Al-Sadiq University, Baghdad, Iraq
| | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul, 41001, Iraq
| | - Sergushina Elena Sergeevna
- National Research Ogarev Mordovia State University, 68 Bolshevitskaya Street, Republic of Mordovia, Saransk, 430005, Russia
| | - Sajad Karampoor
- Gastrointestinal & Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Rasoul Mirzaei
- Venom & Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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Duan M, Chen H, Yin L, Zhu X, Novák P, Lv Y, Zhao G, Yin K. Mitochondrial apolipoprotein A-I binding protein alleviates atherosclerosis by regulating mitophagy and macrophage polarization. Cell Commun Signal 2022; 20:60. [PMID: 35525979 PMCID: PMC9077873 DOI: 10.1186/s12964-022-00858-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 03/05/2022] [Indexed: 12/22/2022] Open
Abstract
Apolipoprotein A-I binding protein (AIBP), a secreted protein, has been shown to play a pivotal role in the development of atherosclerosis. The function of intracellular AIBP, however, is not yet well characterized. Here, we found that AIBP is abundantly expressed within human and mouse atherosclerotic lesions and exhibits a distinct localization in the inner membrane of mitochondria in macrophages. Bone marrow-specific AIBP deficiency promotes the progression of atherosclerosis and increases macrophage infiltration and inflammation in low-density lipoprotein receptor-deficient (LDLR-/-) mice. Specifically, the lack of mitochondrial AIBP leads to mitochondrial metabolic disorders, thereby reducing the formation of mitophagy by promoting the cleavage of PTEN-induced putative kinase 1 (PINK1). With the reduction in mitochondrial autophagy, macrophages polarize to the M1 proinflammatory phenotype, which further promotes the development of atherosclerosis. Based on these results, mitochondrial AIBP in macrophages performs an antiatherosclerotic role by regulating of PINK1-dependent mitophagy and M1/M2 polarization. Video Abstract.
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Affiliation(s)
- Meng Duan
- Department of Cardiology, The Second Affiliated Hospital of Guilin Medical University, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin, 541100 Guangxi China
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi China
- Research Lab of Translational Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Hainan Chen
- Research Lab of Translational Medicine, Hengyang Medical School, University of South China, Hengyang, China
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, Guangzhou, China
| | - Linjie Yin
- Research Lab of Translational Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Xiao Zhu
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi China
| | - Petr Novák
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi China
| | - Yuncheng Lv
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi China
| | - Guojun Zhao
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan City People’s Hospital, Qingyuan, 511518 Guangdong China
| | - Kai Yin
- Department of Cardiology, The Second Affiliated Hospital of Guilin Medical University, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin, 541100 Guangxi China
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi China
- Research Lab of Translational Medicine, Hengyang Medical School, University of South China, Hengyang, China
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Antuna-Puente B, Fellahi S, McAvoy C, Fève B, Bastard JP. Interleukins in adipose tissue: Keeping the balance. Mol Cell Endocrinol 2022; 542:111531. [PMID: 34910978 DOI: 10.1016/j.mce.2021.111531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 12/01/2021] [Accepted: 12/08/2021] [Indexed: 02/06/2023]
Abstract
The role of the immune system is to defend the host and preserve the functionality in response to stress. This function is not limited to infection or injury as it also plays a role in the response to overnutrition. Indeed, low-grade chronic activation of the immune system associated with overnutrition may be deleterious, contributing importantly to diabetes and long-term complications, such as cardiovascular disorders. Increasing evidence shows that adipose tissue participates in the obesity-related inflammatory response and that interleukins are one of the key players, either as a pro-inflammatory response to the metabolic dysregulation or to restore homeostasis. The crosstalk between adipocytes and immune cells through some important interleukins and their role in metabolic disruption is the topic of this review.
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Affiliation(s)
- Barbara Antuna-Puente
- Infection Disease Division, Department of Medicine, Queen's University, Kingston, ON, Canada.
| | - Soraya Fellahi
- Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Département de Biochimie-pharmacologie-biologie Moléculaire-génétique Médicale, Créteil, France; Sorbonne Université-Inserm, Centre de Recherche Saint-Antoine UMR S_938, 75012, Paris Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Paris, France
| | - Chloé McAvoy
- Unité de Recherche Clinique de L'Est Parisien (URC-Est), Hôpital Saint Antoine, Paris, France
| | - Bruno Fève
- Sorbonne Université-Inserm, Centre de Recherche Saint-Antoine UMR S_938, 75012, Paris Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Paris, France; Assistance Publique- Hôpitaux de Paris -Hôpital Saint-Antoine, Service D'Endocrinologie-Diabétologie, Centre de Référence des Maladies Rares de L'Insulino-Sécrétion et de L'Insulino-Sensibilité (PRISIS), 75012, Paris, France
| | - Jean-Philippe Bastard
- Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Département de Biochimie-pharmacologie-biologie Moléculaire-génétique Médicale, Créteil, France; FHU-SENEC, INSERM U955 and Université Paris Est (UPEC), UMR U955, Faculté de Santé, Créteil, France
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10
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Shen JW, Li C, Yang MY, Lin JF, Yin MD, Zou JJ, Wu PY, Chen L, Song LX, Shao JW. Biomimetic nanoparticles: U937 cell membranes based core-shell nanosystems for targeted atherosclerosis therapy. Int J Pharm 2022; 611:121297. [PMID: 34822966 DOI: 10.1016/j.ijpharm.2021.121297] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 11/08/2021] [Accepted: 11/11/2021] [Indexed: 12/25/2022]
Abstract
Atherosclerosis (AS), with its intricate pathogenesis, is primarily responsible for the development and progression of cardiovascular diseases. Although drug development has made some achievements in AS therapy, limited targeting ability and rapid blood clearance remain great challenges for achieving superior clinical outcomes. Herein, ginsenoside (Re)- and catalase (CAT)-coloaded porous poly(lactic-coglycolic acid) (PLGA) nanoparticles (NPs) were prepared and then surface modified with U937 cell membranes (UCMs) to yield a dual targeted model and multimechanism treatment biomimetic nanosystem (Cat/Re@PLGA@UCM). The nanoparticles consisted of a core-shell spherical morphology with a favorable size of 112.7 ± 0.4 nm. Furthermore, UCM assisted the nanosystem in escaping macrophage phagocytosis and targeting atherosclerotic plaques. Meanwhile, loading with catalase might not only exhibit favorable antioxidant effects but also enable H2O2-responsive drug release ability. The Cat/Re@PLGA@UCM NPs also exhibited outstanding ROS scavenging properties, downregulating ICAM-1, TNF-α and IL-1β, while preventing angiogenesis to attenuate the progression of AS. Moreover, the nanodrugs displayed 2.7-fold greater efficiency in reducing the atherosclerotic area in ApoE-/- mouse models compared to free Re. Our nanoformulation also displayed excellent biosafety in response to long-term administration. Overall, our study demonstrated the superiority of UCM-coated stimuli-responsive nanodrugs for effective and safe AS therapy.
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Affiliation(s)
- Jiang-Wen Shen
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Chao Li
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Ming-Yue Yang
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Juan-Fang Lin
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Meng-Die Yin
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Jun-Jie Zou
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Peng-Yu Wu
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Lu Chen
- Materials and Chemical Engineering College of Minjiang University, Fuzhou, 350108, China
| | - Long-Xiang Song
- Materials and Chemical Engineering College of Minjiang University, Fuzhou, 350108, China
| | - Jing-Wei Shao
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350116, China.
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Ghzaiel I, Zarrouk A, Nury T, Libergoli M, Florio F, Hammouda S, Ménétrier F, Avoscan L, Yammine A, Samadi M, Latruffe N, Biressi S, Levy D, Bydlowski SP, Hammami S, Vejux A, Hammami M, Lizard G. Antioxidant Properties and Cytoprotective Effect of Pistacia lentiscus L. Seed Oil against 7β-Hydroxycholesterol-Induced Toxicity in C2C12 Myoblasts: Reduction in Oxidative Stress, Mitochondrial and Peroxisomal Dysfunctions and Attenuation of Cell Death. Antioxidants (Basel) 2021; 10:antiox10111772. [PMID: 34829643 PMCID: PMC8615043 DOI: 10.3390/antiox10111772] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/28/2021] [Accepted: 11/03/2021] [Indexed: 01/18/2023] Open
Abstract
Aging is characterized by a progressive increase in oxidative stress, which favors lipid peroxidation and the formation of cholesterol oxide derivatives, including 7β-hydroxycholesterol (7β-OHC). This oxysterol, which is known to trigger oxidative stress, inflammation, and cell death, could contribute to the aging process and age-related diseases, such as sarcopenia. Identifying molecules or mixtures of molecules preventing the toxicity of 7β-OHC is therefore an important issue. This study consists of determining the chemical composition of Tunisian Pistacia lentiscus L. seed oil (PLSO) used in the Tunisian diet and evaluating its ability to counteract the cytotoxic effects induced by 7β-OHC in murine C2C12 myoblasts. The effects of 7β-OHC (50 µM; 24 h), associated or not with PLSO, were studied on cell viability, oxidative stress, and on mitochondrial and peroxisomal damages induction. α-Tocopherol (400 µM) was used as the positive control for cytoprotection. Our data show that PLSO is rich in bioactive compounds; it contains polyunsaturated fatty acids, and several nutrients with antioxidant properties: phytosterols, α-tocopherol, carotenoids, flavonoids, and phenolic compounds. When associated with PLSO (100 µg/mL), the 7β-OHC-induced cytotoxic effects were strongly attenuated. The cytoprotection was in the range of those observed with α-tocopherol. This cytoprotective effect was characterized by prevention of cell death and organelle dysfunction (restoration of cell adhesion, cell viability, and plasma membrane integrity; prevention of mitochondrial and peroxisomal damage) and attenuation of oxidative stress (reduction in reactive oxygen species overproduction in whole cells and at the mitochondrial level; decrease in lipid and protein oxidation products formation; and normalization of antioxidant enzyme activities: glutathione peroxidase (GPx) and superoxide dismutase (SOD)). These results provide evidence that PLSO has similar antioxidant properties than α-tocopherol used at high concentration and contains a mixture of molecules capable to attenuate 7β-OHC-induced cytotoxic effects in C2C12 myoblasts. These data reinforce the interest in edible oils associated with the Mediterranean diet, such as PLSO, in the prevention of age-related diseases, such as sarcopenia.
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Affiliation(s)
- Imen Ghzaiel
- Team ‘Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism’ EA7270/Inserm, University Bourgogne Franche-Comté, 21000 Dijon, France; (I.G.); (T.N.); (A.Y.); (N.L.); (A.V.)
- Lab-NAFS ‘Nutrition—Functional Food & Vascular Health’, Faculty of Medicine, University of Monastir, LR12ES05, Monastir 5000, Tunisia; (S.H.); (S.H.); (M.H.)
- Faculty of Sciences of Tunis, University Tunis-El Manar, Tunis 2092, Tunisia
| | - Amira Zarrouk
- Lab-NAFS ‘Nutrition—Functional Food & Vascular Health’, Faculty of Medicine, University of Monastir, LR12ES05, Monastir 5000, Tunisia; (S.H.); (S.H.); (M.H.)
- Faculty of Medicine, University of Sousse, Sousse 4000, Tunisia
- Correspondence: (A.Z.); (G.L.); Tel.: +216-94-837-999 or +1-212-241 9304 (A.Z.); +33-380-396-256 (G.L.)
| | - Thomas Nury
- Team ‘Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism’ EA7270/Inserm, University Bourgogne Franche-Comté, 21000 Dijon, France; (I.G.); (T.N.); (A.Y.); (N.L.); (A.V.)
| | - Michela Libergoli
- Department of Cellular, Computational and Integrative Biology (CIBio) and Dulbecco Telethon Institute, University of Trento, 38123 Trento, Italy; (M.L.); (F.F.); (S.B.)
| | - Francesca Florio
- Department of Cellular, Computational and Integrative Biology (CIBio) and Dulbecco Telethon Institute, University of Trento, 38123 Trento, Italy; (M.L.); (F.F.); (S.B.)
| | - Souha Hammouda
- Lab-NAFS ‘Nutrition—Functional Food & Vascular Health’, Faculty of Medicine, University of Monastir, LR12ES05, Monastir 5000, Tunisia; (S.H.); (S.H.); (M.H.)
| | - Franck Ménétrier
- Centre des Sciences du Goût et de l’Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, 21065 Dijon, France;
| | - Laure Avoscan
- Agroécologie, AgroSup Dijon, CNRS, INRAE, University Bourgogne Franche-Comté, Plateforme DimaCell, 21000 Dijon, France;
| | - Aline Yammine
- Team ‘Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism’ EA7270/Inserm, University Bourgogne Franche-Comté, 21000 Dijon, France; (I.G.); (T.N.); (A.Y.); (N.L.); (A.V.)
| | - Mohammad Samadi
- LCPMC-A2, ICPM, Department of Chemistry, University Lorraine, Metz Technopôle, 57070 Metz, France;
| | - Norbert Latruffe
- Team ‘Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism’ EA7270/Inserm, University Bourgogne Franche-Comté, 21000 Dijon, France; (I.G.); (T.N.); (A.Y.); (N.L.); (A.V.)
| | - Stefano Biressi
- Department of Cellular, Computational and Integrative Biology (CIBio) and Dulbecco Telethon Institute, University of Trento, 38123 Trento, Italy; (M.L.); (F.F.); (S.B.)
| | - Débora Levy
- Lipids, Oxidation and Cell Biology Team, Laboratory of Immunology (LIM19), Heart Institute (InCor), Faculdade de Medicina, Universidade de São Paulo, São Paulo 05403-900, Brazil; (D.L.); (S.P.B.)
| | - Sérgio Paulo Bydlowski
- Lipids, Oxidation and Cell Biology Team, Laboratory of Immunology (LIM19), Heart Institute (InCor), Faculdade de Medicina, Universidade de São Paulo, São Paulo 05403-900, Brazil; (D.L.); (S.P.B.)
- National Institute of Science and Technology in Regenerative Medicine (INCT-Regenera), CNPq, Rio de Janeiro 21941-902, Brazil
| | - Sonia Hammami
- Lab-NAFS ‘Nutrition—Functional Food & Vascular Health’, Faculty of Medicine, University of Monastir, LR12ES05, Monastir 5000, Tunisia; (S.H.); (S.H.); (M.H.)
| | - Anne Vejux
- Team ‘Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism’ EA7270/Inserm, University Bourgogne Franche-Comté, 21000 Dijon, France; (I.G.); (T.N.); (A.Y.); (N.L.); (A.V.)
| | - Mohamed Hammami
- Lab-NAFS ‘Nutrition—Functional Food & Vascular Health’, Faculty of Medicine, University of Monastir, LR12ES05, Monastir 5000, Tunisia; (S.H.); (S.H.); (M.H.)
| | - Gérard Lizard
- Team ‘Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism’ EA7270/Inserm, University Bourgogne Franche-Comté, 21000 Dijon, France; (I.G.); (T.N.); (A.Y.); (N.L.); (A.V.)
- Correspondence: (A.Z.); (G.L.); Tel.: +216-94-837-999 or +1-212-241 9304 (A.Z.); +33-380-396-256 (G.L.)
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Buono MF, Slenders L, Wesseling M, Hartman RJG, Monaco C, den Ruijter HM, Pasterkamp G, Mokry M. The changing landscape of the vulnerable plaque: a call for fine-tuning of preclinical models. Vascul Pharmacol 2021; 141:106924. [PMID: 34607015 DOI: 10.1016/j.vph.2021.106924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/08/2021] [Accepted: 09/28/2021] [Indexed: 11/17/2022]
Abstract
For decades, the pathological definition of the vulnerable plaque led to invaluable insights into the mechanisms that underlie myocardial infarction and stroke. Beyond plaque rupture, other mechanisms, such as erosion, may elicit thrombotic events underlining the complexity and diversity of the atherosclerotic disease. Novel insights, based on single-cell transcriptomics and other "omics" methods, provide tremendous opportunities in the ongoing search for cell-specific determinants that will fine-tune the description of the thrombosis prone lesion. It coincides with an increasing awareness that knowledge on lesion characteristics, cell plasticity and clinical presentation of ischemic cardiovascular events have shifted over the past decades. This shift correlates with an observed changes of cell composition towards phenotypical stabilizing of human plaques. These stabilization features and mechanisms are directly mediated by the cells present in plaques and can be mimicked in vitro via primary plaque cells derived from human atherosclerotic tissues. In addition, the rapidly evolving of sequencing technologies identify many candidate genes and molecular mechanisms that may influence the risk of developing an atherosclerotic thrombotic event - which bring the next challenge in sharp focus: how to translate these cell-specific insights into tangible functional and translational discoveries?
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Affiliation(s)
- Michele F Buono
- Laboratory of Experimental Cardiology, University Medical Center Utrecht, the Netherlands
| | - Lotte Slenders
- Central Diagnostics Laboratory, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Marian Wesseling
- Central Diagnostics Laboratory, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Robin J G Hartman
- Laboratory of Experimental Cardiology, University Medical Center Utrecht, the Netherlands
| | - Claudia Monaco
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Hester M den Ruijter
- Laboratory of Experimental Cardiology, University Medical Center Utrecht, the Netherlands
| | - Gerard Pasterkamp
- Central Diagnostics Laboratory, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Michal Mokry
- Laboratory of Experimental Cardiology, University Medical Center Utrecht, the Netherlands; Central Diagnostics Laboratory, University Medical Center Utrecht, Utrecht, the Netherlands.
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Atherogenic oxoaldehyde of cholesterol induces innate immune response in monocytes and macrophages. Cell Biochem Biophys 2021; 79:649-658. [PMID: 34129147 DOI: 10.1007/s12013-021-01004-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/24/2021] [Indexed: 10/21/2022]
Abstract
Cholesterol oxidation product, 3β-hydroxy-5-oxo-5,6-secocholestan-6-al (cholesterol 5,6-secosterol, ChSeco or Atheronal-A), formed at inflammatory sites, has been shown to promote monocyte differentiation into macrophages and cause elevated expression of macrophage scavenger receptors. Since inflammation is a key event at all stages of atherosclerotic plaque formation, the pro-inflammatory actions of ChSeco in human THP-1 monocytes and mouse J774 macrophages were investigated in the present study by employing ELISA, qRT-PCR, and functional assays. An increase in the secretion of interleukin-8 and platelet-derived growth factor (PDGF) isoform AA and, to a limited extent, PDGF isoform BB was observed into the culture medium of THP-1 monocytes exposed to ChSeco. However, no changes were seen in the secretion of tumor necrosis factor-alpha. In J774 macrophages treated with ChSeco, there was an upregulation of gene expression of several pro-inflammatory cytokines and their receptors. Concomitantly, there was down-regulation of gene expression of interleukin-1ß, interleukin-10, and lymphotoxin-beta. An increase in the release of interleukin-18 and chemokine (C-C motif) ligand-20 from J774 macrophages (which corroborated well with their gene expression profiles) and increased binding of THP-1 monocytes to ChSeco-exposed human aortic endothelial cells were observed. The results of the present study, for the first time, demonstrate the pro-inflammatory action of ChSeco and suggest the underlying pro-atherogenic mechanisms. These could be mediated through enhanced monocyte recruitment into the sub-endothelial space and subsequent proliferation of smooth muscle cells under the influence of monocyte-derived PDGF.
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Luo JY, Fang BB, Du GL, Liu F, Li YH, Tian T, Li XM, Gao XM, Yang YN. Association between MIF gene promoter rs755622 and susceptibility to coronary artery disease and inflammatory cytokines in the Chinese Han population. Sci Rep 2021; 11:8050. [PMID: 33850223 PMCID: PMC8044220 DOI: 10.1038/s41598-021-87580-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 03/17/2021] [Indexed: 02/01/2023] Open
Abstract
Macrophage migration inhibitory factor (MIF) is an essential mediator of atherosclerotic plaque progression and instability leading to intracoronary thrombosis, therefore contributing to coronary artery disease (CAD). In this study, we investigated the relationship between MIF gene polymorphism and CAD in Chinese Han population. Three single nucleotide polymorphisms (SNP, rs755622, rs1007888 and rs2096525) of MIF gene were genotyped by TaqMan genotyping assay in 1120 control participants and 1176 CAD patients. Coronary angiography was performed in all CAD patients and Gensini score was used to assess the severity of coronary artery lesions. The plasma levels of MIF and other inflammatory mediators were measured by ELISA. The CAD patients had a higher frequency of CC genotype and C allele of rs755622 compared with that in control subjects (CC genotype: 6.5% vs. 3.9%, P = 0.008, C allele: 24.0% vs. 20.6%, P = 0.005). The rs755622 CC genotype was associated with an increased risk of CAD (OR: 1.804, 95%CI: 1.221-2.664, P = 0.003). CAD patients with a variation of rs755622 CC genotype had significantly higher Gensini score compared with patients with GG or CG genotype (all P < 0.05). In addition, the circulating MIF level was highest in CAD patients carrying rs755622 CC genotype (40.7 ± 4.2 ng/mL) and then followed by GC (37.9 ± 3.4 ng/mL) or GG genotype (36.9 ± 3.7 ng/mL, all P < 0.01). Our study showed an essential relationship between the MIF gene rs755622 variation and CAD in Chinese Han population. Individuals who carrying MIF gene rs755622 CC genotype were more susceptible to CAD and had more severe coronary artery lesion. This variation also had a potential influence in circulating MIF levels.
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Affiliation(s)
- Jun-Yi Luo
- grid.412631.3State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, 137 Liyushan South Road, Urumqi, 830054 China ,grid.13394.3c0000 0004 1799 3993Xinjiang Key Laboratory of Cardiovascular Disease Research, Clinical Medical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Bin-Bin Fang
- grid.412631.3State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, 137 Liyushan South Road, Urumqi, 830054 China ,grid.13394.3c0000 0004 1799 3993Xinjiang Key Laboratory of Cardiovascular Disease Research, Clinical Medical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Guo-Li Du
- grid.412631.3Department of Endocrinology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Fen Liu
- grid.412631.3State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, 137 Liyushan South Road, Urumqi, 830054 China ,grid.13394.3c0000 0004 1799 3993Xinjiang Key Laboratory of Cardiovascular Disease Research, Clinical Medical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Yan-Hong Li
- grid.13394.3c0000 0004 1799 3993Xinjiang Key Laboratory of Cardiovascular Disease Research, Clinical Medical Research Institute of Xinjiang Medical University, Urumqi, China ,grid.412631.3Department of Clinical Laboratory, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Ting Tian
- grid.412631.3State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, 137 Liyushan South Road, Urumqi, 830054 China ,grid.13394.3c0000 0004 1799 3993Xinjiang Key Laboratory of Cardiovascular Disease Research, Clinical Medical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Xiao-Mei Li
- grid.412631.3State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, 137 Liyushan South Road, Urumqi, 830054 China ,grid.13394.3c0000 0004 1799 3993Xinjiang Key Laboratory of Cardiovascular Disease Research, Clinical Medical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Xiao-Ming Gao
- grid.412631.3State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, 137 Liyushan South Road, Urumqi, 830054 China ,grid.13394.3c0000 0004 1799 3993Xinjiang Key Laboratory of Cardiovascular Disease Research, Clinical Medical Research Institute of Xinjiang Medical University, Urumqi, China ,Xinjiang Key Laboratory of Medical Animal Model Research, Urumqi, China
| | - Yi-Ning Yang
- grid.412631.3State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, 137 Liyushan South Road, Urumqi, 830054 China ,grid.13394.3c0000 0004 1799 3993Xinjiang Key Laboratory of Cardiovascular Disease Research, Clinical Medical Research Institute of Xinjiang Medical University, Urumqi, China
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15
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Park Y, Kim TJ, Lee H, Yoo H, Sohn I, Min YW, Min BH, Lee JH, Rhee PL, Kim JJ. Eradication of Helicobacter pylori infection decreases risk for dyslipidemia: A cohort study. Helicobacter 2021; 26:e12783. [PMID: 33508177 DOI: 10.1111/hel.12783] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/11/2020] [Accepted: 11/19/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Previous studies have suggested a relationship between Helicobacter pylori infection and dyslipidemia; however, large-scale longitudinal studies have not elucidated this association. This study assessed the longitudinal effects of H. pylori infection and eradication on lipid profiles in a large cohort. METHODS This cohort study included 2,626 adults without dyslipidemia at baseline, who participated in a repeated, regular health-screening examination, which included upper gastrointestinal endoscopy, between January 2009 and December 2018. The primary outcome was incident dyslipidemia at follow-up. RESULTS During the 10,324 person-years of follow-up, participants with persistent H. pylori infection had a higher incidence rate (130.5 per 1,000 person-years) of dyslipidemia than those whose infections had been successfully controlled (98.1 per 1,000 person-years). In a multivariable model adjusted for age, sex, waist circumference, smoking status, alcohol intake, and education level, the H. pylori eradication group was associated with a lower risk of dyslipidemia than the persistent group (HR, 0.85; 95% CI, 0.77-0.95; p = 0.004). The association persisted after further adjustment for baseline levels of low-density and high-density lipoprotein cholesterol (HR, 0.87; 95% CI, 0.79-0.97; p = 0.014). CONCLUSIONS H. pylori infection may play a pathophysiologic role in the development of dyslipidemia, whereas H. pylori eradication might decrease the risk of dyslipidemia.
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Affiliation(s)
- Yewan Park
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Jun Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyuk Lee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Heejin Yoo
- Statistics and Data Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Insuk Sohn
- Statistics and Data Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yang Won Min
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byung-Hoon Min
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jun Haeng Lee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Poong-Lyul Rhee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jae J Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Anti-atherosclerotic activity of Betulinic acid loaded polyvinyl alcohol/methylacrylate grafted Lignin polymer in high fat diet induced atherosclerosis model rats. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2020.102934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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17
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NFKB1 gene rs28362491 ins/del variation is associated with higher susceptibility to myocardial infarction in a Chinese Han population. Sci Rep 2020; 10:19518. [PMID: 33177541 PMCID: PMC7658993 DOI: 10.1038/s41598-020-72877-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 09/07/2020] [Indexed: 12/20/2022] Open
Abstract
Myocardial infarction (MI), the leading cause of mortality and disability worldwide, is a disease in which multiple environmental and genetic factors are involved. Recently, researches suggested that insertion/deletion (ins/del) variation of NFKB1 gene rs28362491 is a functional polymorphism. In the present study, we aimed to explore the relation between variation of NFKB1 gene rs28362491 and MI by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in 359 MI patients and 1085 control participants. Gensini score was used to evaluate the degree of coronary artery stenosis in MI patients. The plasma levels of interleukin-6 (IL-6), IL-8, malonaldehyde (MDA) and superoxide dismutase (SOD) were randomly measured by ELISA both in MI patients and control participants. We found that the detected frequencies of D allele (41.2% vs. 36.4%, P = 0.021) and DD genotype (17.5% vs. 12.0%, P = 0.022) were significantly higher in MI patients than in control participants. Compared with II or ID genotype carriers, the Gensini score in MI patients with DD genotype was 32-43% higher (both P < 0.001). Moreover, DD genotype carries had more diseased coronary arteries (P = 0.001 vs. II or ID genotype). Of note, IL-6 levels in MI patients carrying DD genotype were significantly higher than that in control participants and other genotype carriers in MI patients (both P < 0.05). In conclusion, NFKB1 gene rs28362491 DD genotype was associated with a higher risk of MI and more severe coronary artery lesion, which also had a potential influence on the level of inflammatory cytokine IL-6.
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Multifaceted Functions of CH25H and 25HC to Modulate the Lipid Metabolism, Immune Responses, and Broadly Antiviral Activities. Viruses 2020; 12:v12070727. [PMID: 32640529 PMCID: PMC7411728 DOI: 10.3390/v12070727] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 07/03/2020] [Indexed: 12/12/2022] Open
Abstract
With the frequent outbreaks of emerging infectious diseases in recent years, an effective broad-spectrum antiviral drug is becoming an urgent need for global public health. Cholesterol-25-hydroxylase (CH25H) and its enzymatic products 25-hydroxycholesterol (25HC), a well-known oxysterol that regulates lipid metabolism, have been reported to play multiple functions in modulating cholesterol homeostasis, inflammation, and immune responses. CH25H and 25HC were recently identified as exerting broadly antiviral activities, including upon a variety of highly pathogenic viruses such as human immunodeficiency virus (HIV), Ebola virus (EBOV), Nipah virus (NiV), Rift Valley fever virus (RVFV), and Zika virus (ZIKV). The underlying mechanisms for its antiviral activities are being extensively investigated but have not yet been fully clarified. In this study, we summarized the current findings on how CH25H and 25HC play multiple roles to modulate cholesterol metabolism, inflammation, immunity, and antiviral infections. Overall, 25HC should be further studied as a potential therapeutic agent to control emerging infectious diseases in the future.
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IL-8 negatively regulates ABCA1 expression and cholesterol efflux via upregulating miR-183 in THP-1 macrophage-derived foam cells. Cytokine 2019; 122:154385. [DOI: 10.1016/j.cyto.2018.04.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 04/18/2018] [Accepted: 04/20/2018] [Indexed: 02/08/2023]
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Xia Z, Gu M, Jia X, Wang X, Wu C, Guo J, Zhang L, Du Y, Wang J. Integrated DNA methylation and gene expression analysis identifies SLAMF7 as a key regulator of atherosclerosis. Aging (Albany NY) 2019; 10:1324-1337. [PMID: 29905534 PMCID: PMC6046250 DOI: 10.18632/aging.101470] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 06/04/2018] [Indexed: 12/27/2022]
Abstract
Atherosclerosis (AS) is a multifactorial disease. Exploration of DNA methylation in regulating gene transcription in a cell type- and stage-specific manner will shed light on understanding the biological processes associated with plaque stability. We identified 174 up-regulated genes with hypo-methylation in the promoter, and 86 down-regulated genes with hyper-methylation in the promoter, in AS vs. healthy controls. Among them, high expression of signaling lymphocytic activation molecule 7 (SLAM7) was examined in carotid plaque vs. intact tissue, in advanced plaque vs. early atherosclerotic tissue, and SLAMF7 protein expressed significantly higher in the unstable plaques than that in the stable plaques, especially in the CD68-positive macrophages. Depletion of SLAMF7 in plaque-derived macrophages induced a suppressed secretion of proinflammatory cytokines, and inhibited proliferation of vascular smooth muscle cells. These data provide emerging evidence that SLAMF7 could be a target of potential therapeutic intervention in carotid AS.
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Affiliation(s)
- Zhangyong Xia
- Department of Neurology Liaocheng People's Hospital and Liaocheng Clinical School of Taishan Medical University, Liaocheng, Shandong 252000, P.R. China
| | - Mingliang Gu
- Joint Laboratory for Translational Medicine Research, Beijing Institute of Genomics, Chinese Academy of Sciences & Liaocheng People's Hospital, CAS Key Laboratory of Genomic Science and Information Chinese Academy of Sciences, Beijing 100101, P.R. China
| | - Xiaodong Jia
- Joint Laboratory for Translational Medicine Research, Beijing Institute of Genomics, Chinese Academy of Sciences and Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Xiaoting Wang
- Taishan Medical University, Taian, Shandong 271016, P.R. China
| | - Chunxia Wu
- Department of Ultrasonic Liaocheng People's Hospital and Liaocheng Clinical School of Taishan Medical University, Liaocheng, Shandong 252000, P.R. China
| | - Jiangwen Guo
- Deparment of Neurology Second Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
| | - Liyong Zhang
- Department of Neurosurgery Liaocheng People's Hospital and Liaocheng Clinical School of Taishan Medical University, Liaocheng, Shandong 252000, PR China
| | - Yifeng Du
- Department of Neurology Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Jiyue Wang
- Department of Neurosurgery Liaocheng People's Hospital and Liaocheng Clinical School of Taishan Medical University, Liaocheng, Shandong 252000, PR China
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Natarajan P, Jaiswal S, Kathiresan S. Clonal Hematopoiesis: Somatic Mutations in Blood Cells and Atherosclerosis. CIRCULATION-GENOMIC AND PRECISION MEDICINE 2019; 11:e001926. [PMID: 29987111 DOI: 10.1161/circgen.118.001926] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The most important prognostic factor for atherosclerotic cardiovascular disease is age, independent of all other recognized risk factors. Recently, exome sequence analyses showed that somatic mutations in blood cells, a process termed clonal hematopoiesis, are common and increase in prevalence with age, with at least 1 in 10 adults older than 70 years affected. Carriers of clonal hematopoiesis have been shown to be not only at heightened risk for hematologic malignancy but also at increased risk for atherosclerotic cardiovascular disease. Here, we review the prior literature of clonal selection and expansion of hematopoietic stem cells and the evidence supporting its causal association with atherosclerotic cardiovascular disease.
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Affiliation(s)
- Pradeep Natarajan
- Center for Genomic Medicine and Cardiovascular Research Center, Massachusetts General Hospital, Boston (P.N., S.K.). .,Program in Medical and Population Genetics and Cardiovascular Disease Initiative, Broad Institute of Harvard and MIT, Cambridge, MA (P.N., S.K.).,Department of Medicine, Harvard Medical School, Boston, MA (P.N., S.K.)
| | - Siddhartha Jaiswal
- Center for Genomic Medicine and Cardiovascular Research Center, Massachusetts General Hospital, Boston (P.N., S.K.).,Program in Medical and Population Genetics and Cardiovascular Disease Initiative, Broad Institute of Harvard and MIT, Cambridge, MA (P.N., S.K.).,Department of Medicine, Harvard Medical School, Boston, MA (P.N., S.K.)
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22
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Wu Y, Wang W, Li XY, Qian LL, Dang SP, Tang X, Chen HJ, Wang RX. Strong association between the interleukin-8-251A/T polymorphism and coronary artery disease risk. Medicine (Baltimore) 2019; 98:e14715. [PMID: 30855465 PMCID: PMC6417535 DOI: 10.1097/md.0000000000014715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Several reports have suggested a possible association between the interleukin (IL)-8-251A/T single-nucleotide polymorphism (SNP) and the susceptibility to coronary artery disease (CAD). Due to inconclusive results of the studies so far, we conducted a meta-analysis to systematically summarize the studies on the association between this SNP and CAD risk. A systematic literature search identified 9 case-control studies (3752 cases and 4219 controls) on the IL-8-251A/T polymorphism. We observed a significant association between different genetic forms of -251A/T SNP and CAD risk, like the allele model (A vs T: odds ratio [OR] 1.14, 95% confidence interval [CI] 1.02-1.27, P = .02), dominant model (AA + AT vs TT: OR 1.20, 95% CI 1.01-1.43, P = .042), recessive model (AA vs AT + TT: OR 1.15, 95% CI 1.03-1.27, P = .01), and homozygous model (AA vs TT: OR 1.26, 95% CI 1.01-1.56, P = .037), whereas the heterozygote model did not show any significant association (AT vs TT: OR 1.16, 95% CI 0.98-1.38, P = .091). Furthermore, significant heterogeneity was observed among studies in terms of all genetic models, except the recessive model. Analysis of the ethnic subgroups revealed a significantly higher risk of CAD in the East Asian population carrying this SNP, and the heterogeneity among the studies regarding the East Asian population was decreased after subgroup analysis. The results of this meta-analysis suggest that the IL-8-251A/T SNP may increase the risk of CAD, especially in people of East Asian ethnicity. Further large-scale, multicenter epidemiological studies are warranted to validate this finding.
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Affiliation(s)
- Ying Wu
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical University
| | - Wei Wang
- Wuxi Center for Disease Control and Prevention, Wuxi, Jiangsu, China
| | - Xiao-Yan Li
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical University
| | - Ling-Ling Qian
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical University
| | - Shi-peng Dang
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical University
| | - Xu Tang
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical University
| | - Heng-Jian Chen
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical University
| | - Ru-Xing Wang
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical University
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23
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Xue W, Fan Z, Li L, Lu J, Zhai Y, Zhao J. The chemokine system and its role in obesity. J Cell Physiol 2018; 234:3336-3346. [PMID: 30375006 DOI: 10.1002/jcp.27293] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/31/2018] [Indexed: 12/27/2022]
Abstract
The chemokine system is a complex arrangement of molecules that attract leukocytes to the site of injury or inflammation. This chemotactic behavior gives the system the name "Chemokine." The intricate and redundant nature of the chemokine system has made it a subject of ongoing scientific investigation. Obesity is characterized as low-grade systemic or chronic inflammation that is responsible for the release of cytokines, adipokines, and chemokines. Excessive tissue fat expansion triggers the release of chemokines, which in turn attract various leukocytes and activate the resident immune surveillance system, eventually leading to worsening of obesity and other related comorbidities. To date, 50 chemokines and 20 chemokine receptors that belong to the G-protein-coupled receptor family have been discovered, and over the past two decades, the physiological and pathological roles of many of these chemokines and their receptors have been elucidated. The objective of this review is to present an update on the link between chemokines and obesity under the light of recent knowledge.
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Affiliation(s)
- Wenhua Xue
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhirui Fan
- Department of Oncology, Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Lifeng Li
- Department of Oncology, Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jingli Lu
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yunkai Zhai
- Center of Telemedicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Engineering Laboratory for Digital Telemedicine Service, Zhengzhou, Henan, China
| | - Jie Zhao
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Center of Telemedicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Engineering Laboratory for Digital Telemedicine Service, Zhengzhou, Henan, China
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24
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Escate R, Mata P, Cepeda JM, Padró T, Badimon L. miR-505-3p controls chemokine receptor up-regulation in macrophages: role in familial hypercholesterolemia. FASEB J 2018; 32:601-612. [PMID: 29457550 DOI: 10.1096/fj.201700476rr] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Familial hypercholesterolemia (FH) conveys a high risk of premature atherosclerosis as a result of lifelong exposure to high LDL cholesterol levels that are not fully reduced by standard-of-care lipid-lowering treatment. Inflammatory mediators have played a role in the progression of atherosclerotic lesions. Here, we investigated whether innate immunity cells in patients with FH have a specific proinflammatory phenotype that is distinct from that of cells in normal participants. To this end, miR-505-3p-a microRNA related to chronic inflammation-and its target genes were investigated in monocyte-derived macrophages (MACs) of patients with FH (FH-MACs) and non-FH controls (co-MACs). On the basis of the profiler PCR array analysis of agomiR-505-3p-transfected MACs, we identified the chemokine receptors, CCR3, CCR4, and CXCR1, as genes that are regulated by miR-505-3p via the transcription factor, RUNX1. miR-505-3p was significantly down-regulated, whereas CCR3, CCR4, CXCR, and RUNX1 were increased in FH-MAC compared with co-MAC, with the increase being more evident in the proinflammatory M1-like FH-MAC. Chemokine receptor levels were unrelated to LDL plasma levels at entry, but correlated with age in patients with FH, not in controls. In summary, we demonstrate for first time to our knowledge that MACs from FH-MACs have an inflammatory phenotype that is characterized by the up-regulation of CCR3, CCR4, and CXCR1 under the control of miR-505-3p. These results suggest a chronic inflammatory condition in FH innate immunity cells that is not reverted by standard lipid-lowering treatment.-Escate, R., Mata, P., Cepeda, J. M., Padró, T., Badimon, L. miR-505-3p controls chemokine receptor up-regulation in macrophages: role in familial hypercholesterolemia.
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Affiliation(s)
- Rafael Escate
- Catalan Institute of Cardiovascular Sciences (ICCC), Sant Pau Biomedical Research Institute (IIB-Sant Pau) Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Hospital de Sant Pau, Barcelona, Spain
| | - Pedro Mata
- Fundación Hipercolesterolemia Familiar, Madrid, Spain
| | - Jose Maria Cepeda
- Department of Internal Medicine, Hospital Vega Baja, Orihuela, Spain
| | - Teresa Padró
- Catalan Institute of Cardiovascular Sciences (ICCC), Sant Pau Biomedical Research Institute (IIB-Sant Pau) Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Hospital de Sant Pau, Barcelona, Spain
| | - Lina Badimon
- Catalan Institute of Cardiovascular Sciences (ICCC), Sant Pau Biomedical Research Institute (IIB-Sant Pau) Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Hospital de Sant Pau, Barcelona, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain
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25
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Maldonado-Pereira L, Schweiss M, Barnaba C, Medina-Meza IG. The role of cholesterol oxidation products in food toxicity. Food Chem Toxicol 2018; 118:908-939. [DOI: 10.1016/j.fct.2018.05.059] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/17/2018] [Accepted: 05/25/2018] [Indexed: 01/10/2023]
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26
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Effect of Helicobacter pylori Infection on Serum Lipid Profile. J Lipids 2018; 2018:6734809. [PMID: 29973994 PMCID: PMC6008870 DOI: 10.1155/2018/6734809] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 04/16/2018] [Indexed: 12/11/2022] Open
Abstract
Background Some studies suggest a significant relationship between Helicobacter pylori infection and atherogenesis; but the mechanism of the relationship is almost unknown. The current study aimed at evaluating the relationship between H. pylori infection and serum lipid profile. Patients and Methods The current study was conducted on 2573 patients, from 2008 to 2015. The serum anti-Helicobacter pylori antibody titer and serum lipid profile were assessed in the study population; data were statistically analyzed by SPSS version 16. P values < 0.05 were considered significant. Results In the current study, 66.5% of the cases were serologically positive for H. pylori. Among male cases, the level of low density lipoprotein (LDL) was higher in patients with H. pylori infection, compared with that of the ones without the infection (P = 0.03); although level of triglyceride (TG) was higher and the level of high density lipoprotein (HDL) was lower in the cases with H. pylori infection; there was no statistically significant difference between the cases with and without H. pylori infection regarding the level of HDL and TG. Among female cases, the level of TG was significantly lower in patients with H. pylori infection, compared with that of the ones without the infection (P = 0.001); but there was no significant difference between the cases with and without H. pylori infection regarding the level of LDL and HDL. The mean fasting blood sugar (FBS) in the cases with H. pylori infection was significantly higher than that of the ones without the infection (P = 0.04). Conclusion According to the results of the current study, the levels of LDL and FBS were high among the male cases with H. pylori infection. However, in females with H. pylori infection the level of TG was low; hence, it seems that the atherogenicity of H. pylori affected the level of blood sugar more.
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27
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Escate R, Mata P, Cepeda JM, Padreó T, Badimon L. miR-505-3p controls chemokine receptor up-regulation in macrophages: role in familial hypercholesterolemia. FASEB J 2017; 32:601-612. [PMID: 32172543 DOI: 10.1096/fj.201700476r] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 09/11/2017] [Indexed: 12/16/2022]
Abstract
Familial hypercholesterolemia (FH) conveys a high risk of premature atherosclerosis as a result of lifelong exposure to high LDL cholesterol levels that are not fully reduced by standard-of-care lipid-lowering treatment. Inflammatory mediators have played a role in the progression of atherosclerotic lesions. Here, we investigated whether innate immunity cells in patients with FH have a specific proinflammatory phenotype that is distinct from that of cells in normal participants. To this end, miR-505-3p-a microRNA related to chronic inflammation-and its target genes were investigated in monocyte-derived macrophages (MACs) of patients with FH (FH-MACs) and non-FH controls (co-MACs). On the basis of the profiler PCR array analysis of agomiR-505-3p-transfected MACs, we identified the chemokine receptors, CCR3, CCR4, and CXCR1, as genes that are regulated by miR-505-3p via the transcription factor, RUNX1. miR-505-3p was significantly down-regulated, whereas CCR3, CCR4, CXCR, and RUNX1 were increased in FH-MAC compared with co-MAC, with the increase being more evident in the proinflammatory M1-like FH-MAC. Chemokine receptor levels were unrelated to LDL plasma levels at entry, but correlated with age in patients with FH, not in controls. In summary, we demonstrate for first time to our knowledge that MACs from FH-MACs have an inflammatory phenotype that is characterized by the up-regulation of CCR3, CCR4, and CXCR1 under the control of miR-505-3p. These results suggest a chronic inflammatory condition in FH innate immunity cells that is not reverted by standard lipid-lowering treatment.-Escate, R., Mata, P., Cepeda, J.M., Padró, T., Badimon, L. miR-505-3p controls chemokine receptor up-regulation in macrophages: role in familial hypercholesterolemia. FASEB J. 32, 601-612 (2018). www.fasebj.org.
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Affiliation(s)
- Rafael Escate
- Catalan Institute of Cardiovascular Sciences (ICCC), Sant Pau Biomedical Research Institute (IIB-Sant Pau) Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Hospital de Sant Pau, Barcelona, Spain
| | - Pedro Mata
- Fundacion Hipercolesterolemia Familiar, Madrid, Spain
| | - Jose Maria Cepeda
- Department of Internal Medicine, Hospital Vega Baja, Orihuela, Spain
| | - Teresa Padreó
- Catalan Institute of Cardiovascular Sciences (ICCC), Sant Pau Biomedical Research Institute (IIB-Sant Pau) Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Hospital de Sant Pau, Barcelona, Spain
| | - Lina Badimon
- Catalan Institute of Cardiovascular Sciences (ICCC), Sant Pau Biomedical Research Institute (IIB-Sant Pau) Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Hospital de Sant Pau, Barcelona, Spain.,Universitat Autonoma de Barcelona, Barcelona, Spain
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28
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Stearic acid at physiologic concentrations induces in vitro lipotoxicity in circulating angiogenic cells. Atherosclerosis 2017; 265:162-171. [PMID: 28892713 DOI: 10.1016/j.atherosclerosis.2017.09.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 08/25/2017] [Accepted: 09/01/2017] [Indexed: 01/06/2023]
Abstract
BACKGROUND AND AIMS Saturated free fatty acids (SFAs) can induce lipotoxicity in different cells. No studies have investigated the effects of SFA in circulating angiogenic cells (CACs), which play a key role in endothelial repair processes. The aim of the study was to assess the effects of SFAs, specifically stearic acid (SA), on viability and function of CACs and to investigate potential underlying molecular mechanisms. METHODS CACs were isolated from healthy subjects by established methods. CACs were incubated with BSA-complexed stearate (100 μM) to assess the time course (from 8 to 24 h exposure) of the effects on viability and apoptosis (activation of caspases 3/7), angiogenic function (tube formation assay), pro-inflammatory cytokine (IL-1β, IL-6, IL-8, MCP-1 and TNFα) gene expression (qPCR) and secretion (ELISA), activation of MAPK (JNK, p38 and Erk1/2) by Western blot and endoplasmic reticulum (ER) stress marker (CHOP, BIP, ATF4, XBP-1 and sXBP-1) gene expression by qPCR. RESULTS Stearic acid activates effector caspases in CACs in a dose- and time-dependent manner. SA also impairs CAC function and increases pro-inflammatory molecule (IL-1β, IL-6, IL-8, MCP-1 and TNFα) gene expression and secretion in CACs starting from 3 h of incubation. The activation of JNK by SA mediates pro-inflammatory response, but it may be not necessary for apoptosis. Moreover, SA induces the expression of ER stress markers across the three branches of the ER stress response. CONCLUSIONS In humans, both function and viability of CACs are exquisitely vulnerable to physiologic concentrations of stearate; lipotoxic impairment of endothelial repair processes may be implicated in vascular damage caused by SFAs.
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Abstract
Ferritin and increased iron stores first appeared on the list of cardiovascular risk factors more than 30 years ago and their causal role in the pathogenesis of atherosclerosis has been heavily discussed since the early 1990s. It seems that besides traditional factors such as hyperlipoproteinemia, hypertension, diabetes mellitus, obesity, physical inactivity, smoking and family history, high iron stores represent an additional parameter that could modify individual cardiovascular risk. The role of iron in the pathogenesis of atherosclerosis was originally primarily associated with its ability to catalyze the formation of highly reactive free oxygen radicals and the oxidation of atherogenic lipoproteins. Later, it became clear that the mechanism is more complex. Atherosclerosis is a chronic fibroproliferative inflammatory process and iron, through increased oxidation stress as well as directly, can control both native and adaptive immune responses. Within the arterial wall, iron affects all of the cell types that participate in the atherosclerotic process (monocytes/macrophages, endothelial cells, vascular smooth muscle cells and platelets). Most intracellular iron is bound in ferritin, whereas redox-active iron forms labile iron pool. Pro-inflammatory and anti-inflammatory macrophages within arterial plaque differ with regard to the amount of intracellular iron and most probably with regard to their labile iron pool. Yet, the relation between plasma ferritin and intracellular labile iron pool has not been fully clarified. Data from population studies document that the consumption of meat and lack of physical activity contribute to increased iron stores. Patients with hereditary hemochromatosis, despite extreme iron storage, do not show increased manifestation of atherosclerosis probably due to the low expression of hepcidin in macrophages.
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Affiliation(s)
- P Kraml
- Second Department of Internal Medicine, Third Faculty of Medicine, Charles University and University Hospital Královské Vinohrady, Prague, Czech Republic.
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30
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Kienhorst L, Janssens H, Radstake T, van Riel P, Jacobs J, van Koolwijk E, van Lochem E, Janssen M. A pilot study of CXCL8 levels in crystal proven gout patients during allopurinol treatment and their association with cardiovascular disease. Joint Bone Spine 2016; 84:709-713. [PMID: 27894951 DOI: 10.1016/j.jbspin.2016.10.013] [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] [Received: 09/11/2016] [Accepted: 10/31/2016] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Gout is associated with cardiovascular diseases, and systemic inflammation has a role in this. CXCL8 (interleukin-8) levels were increased in synovial fluid of gout patients, and in serum in gout patients irrespective of their disease activity. We hypothesized that the well-known cardiovascular protective effects of allopurinol could be related to effects of this drug on CXCL8 levels. METHODS Patients with a crystal proven gout diagnosis, who newly started allopurinol treatment, were included in this prospective cohort study. After evaluation at baseline for cardiovascular diseases, tophi, uric acid, CRP and CXCL8 serum levels, patients were followed for changes in uric acid and CXCL8 levels. A subgroup analysis was performed in 10 patients with the longest follow-up period and at least 4 assessments of serum uric acid and CXCL8. RESULTS Sixty patients were included, and patients known with cardiovascular diseases at baseline had significantly higher CXCL8 and uric acid levels (P<0.01). In the whole group, median CXCL8 levels had not decreased after a median (IQR) follow-up of 27 (12-44) weeks (P=0.66). In the subgroup analysis in 9 out of 10 patients, CXCL8 levels showed a slight decrease, sometimes after an initial increase after a median (IQR) follow-up of 51 (45-60) weeks. CONCLUSIONS This pilot study indicates that higher CXCL8 levels were associated cardiovascular diseases in gout patients. Short-term use of allopurinol does not decrease CXCL8 levels in gout patients, but longer use possibly does. Further studies are warranted to establish the potential mechanisms of treatment and effects on CXCL8 levels.
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Affiliation(s)
- Laura Kienhorst
- Department of Rheumatology, Rijnstate Hospital, PO Box 9555, 6800 Arnhem, TA, The Netherlands.
| | - Hein Janssens
- Department of Primary and Community Care, Radboud University Medical Center, PO Box 9101, 6500 Nijmegen, HB, The Netherlands; Department of Clinical Research, Rijnstate Hospital, PO Box 9555, 6800 Arnhem, TA, The Netherlands
| | - Timothy Radstake
- Department of Rheumatology and Clinical Immunology, Laboratory of Translational Immunology, PO Box 85500, 3508 Utrecht, GA, The Netherlands; Department of Immunology, University Medical Center Utrecht, PO Box 85500, 3508 Utrecht, GA, The Netherlands
| | - Piet van Riel
- Scientific Institute for Quality of Healthcare, Radboud University Medical Center, PO Box 9101, 6500 Nijmegen, HB, The Netherlands
| | - Johannes Jacobs
- Department of Rheumatology and Clinical Immunology, Laboratory of Translational Immunology, PO Box 85500, 3508 Utrecht, GA, The Netherlands
| | - Elly van Koolwijk
- Department of Medical Microbiology and Immunology, Rijnstate Hospital, PO Box 9555, 6800 Arnhem, TA, The Netherlands
| | - Ellen van Lochem
- Department of Clinical Research, Rijnstate Hospital, PO Box 9555, 6800 Arnhem, TA, The Netherlands; Department of Medical Microbiology and Immunology, Rijnstate Hospital, PO Box 9555, 6800 Arnhem, TA, The Netherlands
| | - Matthijs Janssen
- Department of Rheumatology, Rijnstate Hospital, PO Box 9555, 6800 Arnhem, TA, The Netherlands
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31
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Cheng F, Twardowski L, Fehr S, Aner C, Schaeffeler E, Joos T, Knorpp T, Dorweiler B, Laufer S, Schwab M, Torzewski M. Selective p38α MAP kinase/MAPK14 inhibition in enzymatically modified LDL‐stimulated human monocytes: implications for atherosclerosis. FASEB J 2016; 31:674-686. [DOI: 10.1096/fj.201600669r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 10/24/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Fei Cheng
- Department of Laboratory MedicineRobert‐Bosch‐HospitalStuttgartGermany
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
| | - Laura Twardowski
- Department of Laboratory MedicineRobert‐Bosch‐HospitalStuttgartGermany
| | - Sarah Fehr
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
| | - Christoph Aner
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
| | - Elke Schaeffeler
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
| | - Thomas Joos
- Natural and Medical Sciences InstituteUniversity of TübingenReutlingenGermany
| | - Thomas Knorpp
- Natural and Medical Sciences InstituteUniversity of TübingenReutlingenGermany
| | - Bernhard Dorweiler
- Division of Vascular Surgery, Department of Cardiothoracic and Vascular SurgeryUniversity Medical Center, Johannes‐Gutenberg UniversityMainzGermany
| | - Stefan Laufer
- Institute of PharmacyUniversity of TübingenTübingenGermany
| | - Matthias Schwab
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
- Institute of PharmacyUniversity of TübingenTübingenGermany
- Department of Clinical PharmacologyUniversity Hospital TübingenTübingenGermany
| | - Michael Torzewski
- Department of Laboratory MedicineRobert‐Bosch‐HospitalStuttgartGermany
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
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32
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Maione AS, Cipolletta E, Sorriento D, Borriello F, Soprano M, Rusciano MR, D'Esposito V, Markabaoui AK, De Palma GD, Martino G, Maresca L, Nobile G, Campiglia P, Formisano P, Ciccarelli M, Marone G, Trimarco B, Iaccarino G, Illario M. Cellular subtype expression and activation of CaMKII regulate the fate of atherosclerotic plaque. Atherosclerosis 2016; 256:53-61. [PMID: 28011257 DOI: 10.1016/j.atherosclerosis.2016.11.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 11/02/2016] [Accepted: 11/03/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND AND AIMS Atherosclerosis is a degenerative process of the arterial wall implicating activation of macrophages and proliferation of vascular smooth muscle cells. Calcium-calmodulin dependent kinase type II (CaMKII) in vascular smooth muscle cells (VSMCs) regulates proliferation, while in macrophages, this kinase governs diapedesis, infiltration and release of extracellular matrix enzymes. We aimed at understanding the possible role of CaMKII in atherosclerosis plaques to regulate plaque evolution towards stability or instability. METHODS Clinically defined stable and unstable plaques obtained from patients undergoing carotid end arteriectomy were processed for evaluation of CaMKs protein expression, activity and localization. RESULTS The larger content of CaMKII was found in CD14+myeloid cells that were more abundant in unstable rather than stable plaques. To test the biological effect of activated CD14+myeloid cells, VSMCs were exposed to the conditioned medium (CM) of macrophages extracted from carotid plaques. CM induced attenuation of CaMKs expression and activity in VSMCs, leading to the reduction of VSMCs proliferation. This appears to be due to the CaMKII dependent release of cytokines. CONCLUSIONS These results indicate a pivotal role of CaMKs in atherosclerosis by regulating activated myeloid cells on VSMCs activity. CaMKII could represent a possible target for therapeutic strategies based on macrophages specific inhibition for the stabilization of arteriosclerotic lesions.
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Affiliation(s)
- Angela Serena Maione
- Department of Translational Medical Science, Federico II University, Naples, Italy
| | - Ersilia Cipolletta
- Department of Medicine, Surgery Odontoiatrics-Scuola Medica Salernitana, University of Salerno, Salerno, Italy
| | - Daniela Sorriento
- Department of Advanced Biomedical Science, Federico II University, Naples, Italy
| | - Francesco Borriello
- Department of Translational Medical Science, Federico II University, Naples, Italy; Center for Basic and Clinical Immunology Research (CISI), Italy
| | - Maria Soprano
- Department of Translational Medical Science, Federico II University, Naples, Italy
| | | | - Vittoria D'Esposito
- Department of Translational Medical Science, Federico II University, Naples, Italy
| | - Abdul Karim Markabaoui
- Department of Gastroenterology, Endocrinology and Surgery, Federico II University, Naples, Italy
| | | | - Giovanni Martino
- Department of Gastroenterology, Endocrinology and Surgery, Federico II University, Naples, Italy
| | - Lucio Maresca
- AziendadeiColli Hospital, Department of Vascular Surgery, Naples, Italy
| | - Giuseppe Nobile
- AziendadeiColli Hospital, Department of Vascular Surgery, Naples, Italy
| | | | - Pietro Formisano
- Department of Translational Medical Science, Federico II University, Naples, Italy
| | - Michele Ciccarelli
- Department of Medicine, Surgery Odontoiatrics-Scuola Medica Salernitana, University of Salerno, Salerno, Italy
| | - Gianni Marone
- Department of Translational Medical Science, Federico II University, Naples, Italy; Center for Basic and Clinical Immunology Research (CISI), Italy; CNR Institute of Experimental Endocrinology and Oncology "G. Salvatore", Naples, Italy
| | - Bruno Trimarco
- Department of Advanced Biomedical Science, Federico II University, Naples, Italy
| | - Guido Iaccarino
- Department of Medicine, Surgery Odontoiatrics-Scuola Medica Salernitana, University of Salerno, Salerno, Italy
| | - Maddalena Illario
- Department of Translational Medical Science, Federico II University, Naples, Italy; Federico II University and Hospital, Naples, Italy.
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Haj Ahmed S, Kharroubi W, Zarrouk A, Brahmi F, Nury T, Lizard G, Hammami M. Protective effects of bezafibrate against elaidic acid-induced accumulation of lipid droplets in monocytic cells. Curr Res Transl Med 2016; 65:20-30. [PMID: 28340693 DOI: 10.1016/j.retram.2016.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 07/24/2016] [Accepted: 08/05/2016] [Indexed: 01/15/2023]
Abstract
Some factors related to diet, such as trans fatty acids (TFA), are known to be involved in the progression of atherosclerosis in humans. Thus, the aim of our study was (i) to evaluate the effects of three dietary free fatty acids (FFA) (elaidic (EA), oleic (OA) and palmitic acid (PA)) on U937 human monocytes, and (ii) to study the eventual benefits of bezafibrate (BZF), a pan-agonist for PPAR isoforms (α, γ and δ) in U937 cells treated with FFA. Morphologic and functional changes were investigated by microscopic and flow cytometric methods. Cellular lipid content, lipid droplets and FA composition were identified and studied. All analyses were also realized in association with or without BZF. Contrary to OA and PA, EA slightly induced both propidium iodide-positive cells and mitochondrial depolarization. In addition, in contrast to OA and PA, EA induced only a slight increase in superoxide anion production. However, EA and OA promoted cytoplasmic lipid droplets accumulation. Only EA and OA significantly increased CD36 expression. It is noteworthy that BZF had a more or less pronounced protective effect against EA-, OA- and PA-induced side effects: BZF attenuated the impaired cell viability and inflammatory response, decreased superoxide anion production and prevented the accumulation of neutral and polar lipids. The effects were less pronounced with OA and PA than with EA. Altogether, our data revealed a benefit of BZF on the side effects induced especially with EA. It may thus be of interest in preventing the early stages of atherosclerotic plaque formation.
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Affiliation(s)
- S Haj Ahmed
- Laboratoire 'nutrition, aliments fonctionnels et santé vasculaire', UR12ES05 faculté de médecine, université de Monastir, Monastir, Tunisia.
| | - W Kharroubi
- Laboratoire 'nutrition, aliments fonctionnels et santé vasculaire', UR12ES05 faculté de médecine, université de Monastir, Monastir, Tunisia
| | - A Zarrouk
- Laboratoire 'nutrition, aliments fonctionnels et santé vasculaire', UR12ES05 faculté de médecine, université de Monastir, Monastir, Tunisia; Équipe 'biochimie du peroxysome, inflammation et métabolisme lipidique' EA7270/université de Bourgogne Franche Comté/Inserm, 21000 Dijon, France
| | - F Brahmi
- Laboratoire de biophysique, biochimie, biomathématique et scientométrie (3BS), département des sciences alimentaires, faculté des Sciences de la Nature et de la Vie, université Abderrahmane Mira, Béjaia, Algeria
| | - T Nury
- Équipe 'biochimie du peroxysome, inflammation et métabolisme lipidique' EA7270/université de Bourgogne Franche Comté/Inserm, 21000 Dijon, France
| | - G Lizard
- Équipe 'biochimie du peroxysome, inflammation et métabolisme lipidique' EA7270/université de Bourgogne Franche Comté/Inserm, 21000 Dijon, France
| | - M Hammami
- Laboratoire 'nutrition, aliments fonctionnels et santé vasculaire', UR12ES05 faculté de médecine, université de Monastir, Monastir, Tunisia
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Cavusoglu E, Marmur JD, Yanamadala S, Chopra V, Hegde S, Nazli A, Singh KP, Zhang M, Eng C. Elevated baseline plasma IL-8 levels are an independent predictor of long-term all-cause mortality in patients with acute coronary syndrome. Atherosclerosis 2015; 242:589-94. [DOI: 10.1016/j.atherosclerosis.2015.08.022] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 08/12/2015] [Accepted: 08/14/2015] [Indexed: 10/23/2022]
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Abstract
Coronary artery disease (CAD) is the leading cause of death in the United States. Although CAD was formerly considered a lipid accumulation-mediated disease, it has now been clearly shown to involve an ongoing inflammatory response. Advances in basic science research have established the crucial role of inflammation in mediating all stages of CAD. Today, there is convincing evidence that multiple interrelated immune mechanisms interact with metabolic risk factors to initiate, promote, and ultimately activate lesions in the coronary arteries. This review aims to provide current evidence pertaining to the role of inflammation in the pathogenesis of CAD and discusses the impact of inflammatory markers and their modification on clinical outcomes.
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Ciesielska A, Kwiatkowska K. Modification of pro-inflammatory signaling by dietary components: The plasma membrane as a target. Bioessays 2015; 37:789-801. [DOI: 10.1002/bies.201500017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Anna Ciesielska
- Nencki Institute of Experimental Biology; Laboratory of Molecular Membrane Biology; Warsaw Poland
| | - Katarzyna Kwiatkowska
- Nencki Institute of Experimental Biology; Laboratory of Molecular Membrane Biology; Warsaw Poland
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Tazzyman S, Murdoch C, Yeomans J, Harrison J, Muthana M. Macrophage-mediated response to hypoxia in disease. HYPOXIA 2014; 2:185-196. [PMID: 27774476 PMCID: PMC5045066 DOI: 10.2147/hp.s49717] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Hypoxia plays a critical role in the pathobiology of various inflamed, diseased tissues, including malignant tumors, atherosclerotic plaques, myocardial infarcts, the synovia of rheumatoid arthritic joints, healing wounds, and sites of bacterial infection. These areas of hypoxia form when the blood supply is occluded and/or the oxygen supply is unable to keep pace with cell growth and/or infiltration of inflammatory cells. Macrophages are ubiquitous in all tissues of the body and exhibit great plasticity, allowing them to perform divergent functions, including, among others, patrolling tissue, combating invading pathogens and tumor cells, orchestrating wound healing, and restoring homeostasis after an inflammatory response. The number of tissue macrophages increases markedly with the onset and progression of many pathological states, with many macrophages accumulating in avascular and necrotic areas, where they are exposed to hypoxia. Recent studies show that these highly versatile cells then respond rapidly to the hypoxia present by altering their expression of a wide array of genes. Here we review the evidence for hypoxia-driven macrophage inflammatory responses in various disease states, and how this influences disease progression and treatment.
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Affiliation(s)
| | | | | | | | - Munitta Muthana
- Department of Infection and Immunity, University of Sheffield, Sheffield, UK
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Buzás GM. Metabolic consequences of Helicobacter pylori infection and eradication. World J Gastroenterol 2014; 20:5226-5234. [PMID: 24833852 PMCID: PMC4017037 DOI: 10.3748/wjg.v20.i18.5226] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Accepted: 01/15/2014] [Indexed: 02/06/2023] Open
Abstract
Helicobacter pylori (H. pylori) is still the most prevalent infection of the world. Colonization of the stomach by this agent will invariably induce chronic gastritis which is a low-grade inflammatory state leading to local complications (peptic ulcer, gastric cancer, lymphoma) and remote manifestations. While H. pylori does not enter circulation, these extragastric manifestations are probably mediated by the cytokines and acute phase proteins produced by the inflammed mucosa. The epidemiologic link between the H. pylori infection and metabolic changes is inconstant and controversial. Growth delay was described mainly in low-income regions with high prevalence of the infection, where probably other nutritional and social factors contribute to it. The timely eradication of the infection will lead to a more healthy development of the young population, along with preventing peptic ulcers and gastric cancer An increase of total, low density lipoprotein and high density liporotein cholesterol levels in some infected people creates an atherogenic lipid profile which could promote atherosclerosis with its complications, myocardial infarction, stroke and peripheral vascular disease. Well designed and adequately powered long-term studies are required to see whether eradication of the infection will prevent these conditions. In case of glucose metabolism, the most consistent association was found between H. pylori and insulin resistance: again, proof that eradication prevents this common metabolic disturbance is expected. The results of eradication with standard regimens in diabetics are significantly worse than in non-diabetic patients, thus, more active regimens must be found to obtain better results. Successful eradication itself led to an increase of body mass index and cholesterol levels in some populations, while in others no such changes were encountered. Uncertainities of the metabolic consequences of H. pylori infection must be clarified in the future.
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Biasi F, Leonarduzzi G, Oteiza PI, Poli G. Inflammatory bowel disease: mechanisms, redox considerations, and therapeutic targets. Antioxid Redox Signal 2013; 19:1711-47. [PMID: 23305298 PMCID: PMC3809610 DOI: 10.1089/ars.2012.4530] [Citation(s) in RCA: 188] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Oxidative stress is thought to play a key role in the development of intestinal damage in inflammatory bowel disease (IBD), because of its primary involvement in intestinal cells' aberrant immune and inflammatory responses to dietary antigens and to the commensal bacteria. During the active disease phase, activated leukocytes generate not only a wide spectrum of pro-inflammatory cytokines, but also excess oxidative reactions, which markedly alter the redox equilibrium within the gut mucosa, and maintain inflammation by inducing redox-sensitive signaling pathways and transcription factors. Moreover, several inflammatory molecules generate further oxidation products, leading to a self-sustaining and auto-amplifying vicious circle, which eventually impairs the gut barrier. The current treatment of IBD consists of long-term conventional anti-inflammatory therapy and often leads to drug refractoriness or intolerance, limiting patients' quality of life. Immune modulators or anti-tumor necrosis factor α antibodies have recently been used, but all carry the risk of significant side effects and a poor treatment response. Recent developments in molecular medicine point to the possibility of treating the oxidative stress associated with IBD, by designing a proper supplementation of specific lipids to induce local production of anti-inflammatory derivatives, as well as by developing biological therapies that target selective molecules (i.e., nuclear factor-κB, NADPH oxidase, prohibitins, or inflammasomes) involved in redox signaling. The clinical significance of oxidative stress in IBD is now becoming clear, and may soon lead to important new therapeutic options to lessen intestinal damage in this disease.
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Affiliation(s)
- Fiorella Biasi
- 1 Department of Clinical and Biological Sciences, University of Turin , San Luigi Gonzaga Hospital, Orbassano, Italy
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Eibinger G, Fauler G, Bernhart E, Frank S, Hammer A, Wintersperger A, Eder H, Heinemann A, Mischel PS, Malle E, Sattler W. On the role of 25-hydroxycholesterol synthesis by glioblastoma cell lines. Implications for chemotactic monocyte recruitment. Exp Cell Res 2013; 319:1828-1838. [PMID: 23541792 DOI: 10.1016/j.yexcr.2013.03.025] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 03/18/2013] [Accepted: 03/20/2013] [Indexed: 12/21/2022]
Abstract
Glioblastoma multiforme (GBM) is the most common malignant primary brain tumor and is invariably fatal to affected patients. Oxysterols belong to a class of bioactive lipids that are implicated in neurological disease and are associated with various types of cancer. Here, we investigated expression and transcriptional regulation of cholesterol 25-hydroxylase (CH25H) in human U87MG and GM133 glioblastoma cell lines. We demonstrate that in both cell lines transcription and translation of CH25H are increased in response to TNFα and IL1β. In parallel, both cell lines upregulate 25-hydroxycholesterol (25-OHC) synthesis and secretion to levels comparable to bone marrow-derived mouse macrophages under inflammatory conditions. To determine whether 25-OHC acts as chemoattractant for tumor-associated macrophages, the human THP-1 monoblastic leukemia cell line was treated with varying amounts of the oxysterol. Experiments revealed that 25-OHC and lipid extracts isolated from GM133-conditioned medium (containing 7-fold higher 25-OHC concentrations than U87MG medium) induce chemotactic migration of THP-1 cells. Of note, 25-OHC also induced the migration of primary human peripheral blood monocytes. In response to exogenously added 25-OHC, THP-1 cells reorganized intermediate filament-associated vimentin to more cortical and polarized structures. Chemotactic migration of monocytes in response to 25-OHC was pertussis toxin-sensitive, indicating the involvement of G protein-coupled receptors. Using RNA interference we demonstrated that G protein-coupled receptor 183 (EBI2) contributes to 25-OHC-mediated chemotactic migration of THP-1 cells. These in vitro data indicate that GBM-derived and secreted 25-OHC may be involved in the recruitment of immune-competent cells to a tumor via EBI2.
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Affiliation(s)
- Gerald Eibinger
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Harrachgasse 21, Graz 8010, Austria
| | - Günter Fauler
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz 8010, Austria
| | - Eva Bernhart
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Harrachgasse 21, Graz 8010, Austria
| | - Sasa Frank
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Harrachgasse 21, Graz 8010, Austria
| | - Astrid Hammer
- Institute of Cell Biology, Histology and Embryology, Medical University of Graz, Graz 8010, Austria
| | - Andrea Wintersperger
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Harrachgasse 21, Graz 8010, Austria
| | - Hans Eder
- Department of Neurosurgery, Medical University of Graz, Graz 8010, Austria
| | - Akos Heinemann
- Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Graz 8010, Austria
| | - Paul S Mischel
- Ludwig Institute for Cancer Research, La Jolla, California, CA 92093, USA
| | - Ernst Malle
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Harrachgasse 21, Graz 8010, Austria
| | - Wolfgang Sattler
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Harrachgasse 21, Graz 8010, Austria.
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41
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On the formation and possible biological role of 25-hydroxycholesterol. Biochimie 2013; 95:455-60. [DOI: 10.1016/j.biochi.2012.06.016] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Accepted: 06/14/2012] [Indexed: 11/22/2022]
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Koarai A, Yanagisawa S, Sugiura H, Ichikawa T, Kikuchi T, Furukawa K, Akamatsu K, Hirano T, Nakanishi M, Matsunaga K, Minakata Y, Ichinose M. 25-Hydroxycholesterol enhances cytokine release and Toll-like receptor 3 response in airway epithelial cells. Respir Res 2012; 13:63. [PMID: 22849850 PMCID: PMC3460764 DOI: 10.1186/1465-9921-13-63] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2012] [Accepted: 07/17/2012] [Indexed: 11/15/2022] Open
Abstract
Background 25-hydroxycholesterol (25-HC) is one of the oxysterols, which are oxidized derivatives of cholesterol, and has been reported to be involved in the pathogenesis of atherosclerosis and Alzheimer’s disease. In lung, the possible involvement of 25-HC in airway diseases has been revealed. In the present study, we examined whether 25-HC affects the release of cytokines and also modulates the responses of toll-like receptor 3 (TLR3) in airway epithelial cells. Methods The effect of 25-HC on the release of cytokines from primary human bronchial epithelial cells after stimulation with or without polyinosine-polycytidylic acid [poly(I:C)], a ligand for TLR3, and the signal transduction were examined. Results 25-HC significantly potentiated the release of interleukin-8 (IL-8) and IL-6 from the cells. This effect was more potent compared with that of other oxysterols, 22-HC and 27-HC. GW3965 and TO901317, synthetic agonists of liver X receptors that are receptors for oxysterols, did not augment the IL-8 release. 25-HC enhanced the nuclear factor-kappa B (NF-κB) DNA binding activity and translocation of phosphorylated c-Jun into the nucleus. The release of IL-8 was inhibited by the NF-κB inhibitor, caffeic acid phenethyl ester (CAPE), an inhibitor of nuclear factor kappa-B alpha (IκBα) inhibitor, BAY 11–7085, and an inhibitor of nuclear factor kappa-B kinase-2 (IKK-2) inhibitor, SC-514, but not by a c-Jun N-terminal kinase (JNK) inhibitory peptide, L-JNKi1. 25-HC significantly potentiated IL-8 release in poly(I:C)-treated cells and the augmentation was inhibited by CAPE, BAY 11–7085, and SC-514. Furthermore, 25-HC potentiated the translocation of interferon regulatory factor 3 into the nucleus and the release of interferon-beta (IFN-β) in poly(I:C)-treated cells. Conclusions These data demonstrated that 25-HC augments the release of IL-8 and IL-6 via NF-κB signalling pathway and enhances the release of IL-8 and IFN-β after stimulation of TLR3 in airway epithelial cells. 25-HC may be involved in the neutrophilic airway inflammation through the stimulant effect of IL-8 and IL-6 release and also potentiate the TLR3-mediated innate immunity in airway diseases.
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Affiliation(s)
- Akira Koarai
- Third Department of Internal Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama 641-8509, Japan.
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Mori Y, Hirano T. Ezetimibe alone or in combination with pitavastatin prevents kidney dysfunction in 5/6 nephrectomized rats fed high-cholesterol. Metabolism 2012; 61:379-88. [PMID: 21868047 DOI: 10.1016/j.metabol.2011.07.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Revised: 07/07/2011] [Accepted: 07/08/2011] [Indexed: 01/13/2023]
Abstract
We attempted to elucidate the relationship between cholesterol absorption and kidney damage by investigating the renoprotective effect of ezetimibe, a cholesterol absorption inhibitor, in 5/6 nephrectomized rats (Nx). The Nx or sham-operated rats (Sham) were fed 1% high-cholesterol diet (HC) containing ezetimibe (10 mg/[kg d]), pitavastatin (3 mg/[kg d]), or both for 8 weeks. Pathological changes, endothelial nitric oxide synthase (eNOS) messenger RNA (mRNA), and oxidative stress were assessed in the kidney. The Sham fed HC exhibited hypercholesterolemia and glomerulosclerosis with macrophage infiltration in the kidney, and ezetimibe attenuated these changes. The Nx exhibited hypercholesterolemia, increased urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG), glomerulosclerosis with macrophage infiltration and interstitial fibrosis, and downregulation of eNOS mRNA. The HC increased cholesterol further and worsened the kidney damage with increased 8-OHdG. Ezetimibe attenuated the hypercholesterolemia, kidney dysfunction, and pathological changes. The beneficial effects of ezetimibe were significantly associated with reduced 8-OHdG (P < .01). Pitavastatin did not reduce cholesterol or 8-OHdG, but it did significantly suppress the kidney damage with upregulated eNOS mRNA by 2.5-fold (P < .02). The combination of ezetimibe and pitavastatin synergistically ameliorated the kidney damage. The kidney dysfunction and pathological changes were significantly associated with cholesterol, markers of cholesterol absorption (campesterol and cholestanol), and 8-OHdG (P < .001-.05). Multiple regression analysis revealed that the markers of cholesterol absorption were independently associated with the kidney damage. Ezetimibe confers renoprotective effects by inhibiting cholesterol absorption, which in turn reduces oxidative stress; and pitavastatin additively ameliorates kidney damage by increasing NO production via mechanisms independent of cholesterol reduction.
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Affiliation(s)
- Yusaku Mori
- Department of Diabetes, Metabolism, and Endocrinology, Showa University School of Medicine, Tokyo, Japan
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44
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AP-1 and NF-κB transcriptionally regulate interleukin-8 in EA.Hy926 cells under shear stress. Cell Biol Int 2012; 36:251-4. [DOI: 10.1042/cbi20100809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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45
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Leonarduzzi G, Gamba P, Gargiulo S, Biasi F, Poli G. Inflammation-related gene expression by lipid oxidation-derived products in the progression of atherosclerosis. Free Radic Biol Med 2012; 52:19-34. [PMID: 22037514 DOI: 10.1016/j.freeradbiomed.2011.09.031] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 09/16/2011] [Accepted: 09/24/2011] [Indexed: 12/31/2022]
Abstract
Vascular areas of atherosclerotic development persist in a state of inflammation, and any further inflammatory stimulus in the subintimal area elicits a proatherogenic response; this alters the behavior of the artery wall cells and recruits further inflammatory cells. In association with the inflammatory response, oxidative events are also involved in the development of atherosclerotic plaques. It is now unanimously recognized that lipid oxidation-derived products are key players in the initiation and progression of atherosclerotic lesions. Oxidized lipids, derived from oxidatively modified low-density lipoproteins (LDLs), which accumulate in the intima, strongly modulate inflammation-related gene expression, through involvement of various signaling pathways. In addition, considerable evidence supports a proatherogenic role of a large group of potent bioactive lipids called eicosanoids, which derive from oxidation of arachidonic acid, a component of membrane phospholipids. Of note, LDL lipid oxidation products might regulate eicosanoid production, modulating the enzymatic degradation of arachidonic acid by cyclooxygenases and lipoxygenases; these enzymes might also directly contribute to LDL oxidation. This review provides a comprehensive overview of current knowledge on signal transduction pathways and inflammatory gene expression, modulated by lipid oxidation-derived products, in the progression of atherosclerosis.
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46
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Lemaire-Ewing S, Lagrost L, Néel D. Lipid rafts: a signalling platform linking lipoprotein metabolism to atherogenesis. Atherosclerosis 2011; 221:303-10. [PMID: 22071358 DOI: 10.1016/j.atherosclerosis.2011.10.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 09/22/2011] [Accepted: 10/12/2011] [Indexed: 01/16/2023]
Abstract
Lipid rafts are microdomains of the plasma membrane which are enriched in cholesterol and sphingolipids. They serve as a platform for signal transduction, in particular during immune and inflammatory responses. As hypercholesterolemia and inflammation are two key elements of atherogenesis, it is conceivable that the cholesterol and cholesterol oxide content of lipid rafts might influence the inflammatory signalling pathways, thus modulating the development of atherosclerosis. In support of this emerging view, lipid rafts have been shown to be involved in several key steps of atherogenesis, such as the oxysterol-mediated apoptosis of vascular cells, the blunted ability of high density lipoproteins (HDL) to exert anti-inflammatory effects, and the exacerbated secretion of pro-inflammatory cytokines by immune cells. Additional studies are now required to address the relative contribution of lipid raft abnormalities to the pathophysiology of atherosclerosis and cardiovascular disease.
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47
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Upadhya S, Mooteri S, Pai R. Role of interleukins in atherogenesis. Int J Angiol 2011. [DOI: 10.1007/bf01637039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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48
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Jusakul A, Yongvanit P, Loilome W, Namwat N, Kuver R. Mechanisms of oxysterol-induced carcinogenesis. Lipids Health Dis 2011; 10:44. [PMID: 21388551 PMCID: PMC3061933 DOI: 10.1186/1476-511x-10-44] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Accepted: 03/09/2011] [Indexed: 12/28/2022] Open
Abstract
Oxysterols are oxidation products of cholesterol that are generated by enzymatic reactions mediated by cytochrome P450 family enzymes or by non-enzymatic reactions involving reactive oxygen and nitrogen species. Oxysterols play various regulatory roles in normal cellular processes such as cholesterol homeostasis by acting as intermediates in cholesterol catabolism. Pathological effects of oxysterols have also been described, and various reports have implicated oxysterols in several disease states, including atherosclerosis, neurological disease, and cancer. Numerous studies show that oxysterols are associated with various types of cancer, including cancers of the colon, lung, skin, breast and bile ducts. The molecular mechanisms whereby oxysterols contribute to the initiation and progression of cancer are an area of active investigation. This review focuses on the current state of knowledge regarding the role of oxysterols in carcinogenesis. Mutagenicity of oxysterols has been described in both nuclear and mitochondrial DNA. Certain oxysterols such as cholesterol-epoxide and cholestanetriol have been shown to be mutagenic and genotoxic. Oxysterols possess pro-oxidative and pro-inflammatory properties that can contribute to carcinogenesis. Oxysterols can induce the production of inflammatory cytokines such as interleukin-8 and interleukin-1β. Certain oxysterols are also involved in the induction of cyclo-oxygenase-2 expression. Inflammatory effects can also be mediated through the activation of liver-X-receptor, a nuclear receptor for oxysterols. Thus, several distinct molecular mechanisms have been described showing that oxysterols contribute to the initiation and progression of cancers arising in various organ systems.
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Affiliation(s)
- Apinya Jusakul
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Khaen, Thailand
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Palozza P, Parrone N, Simone RE, Catalano A. Lycopene in atherosclerosis prevention: An integrated scheme of the potential mechanisms of action from cell culture studies. Arch Biochem Biophys 2010; 504:26-33. [DOI: 10.1016/j.abb.2010.06.031] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 06/14/2010] [Accepted: 06/27/2010] [Indexed: 12/31/2022]
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50
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Imtiyaz HZ, Simon MC. Hypoxia-inducible factors as essential regulators of inflammation. Curr Top Microbiol Immunol 2010; 345:105-20. [PMID: 20517715 PMCID: PMC3144567 DOI: 10.1007/82_2010_74] [Citation(s) in RCA: 180] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Myeloid cells provide important functions in low oxygen (O(2)) environments created by pathophysiological conditions, including sites of infection, inflammation, tissue injury, and solid tumors. Hypoxia-inducible factors (HIFs) are principle regulators of hypoxic adaptation, regulating gene expression involved in glycolysis, erythropoiesis, angiogenesis, proliferation, and stem cell function under low O(2). Interestingly, increasing evidence accumulated over recent years suggests an additional important regulatory role for HIFs in inflammation. In macrophages, HIFs not only regulate glycolytic energy generation, but also optimize innate immunity, control pro-inflammatory gene expression, mediate bacterial killing and influence cell migration. In neutrophils, HIF-1α promotes survival under O(2)-deprived conditions and mediates blood vessel extravasation by modulating β (2) integrin expression. Additionally, HIFs contribute to inflammatory functions in various other components of innate immunity, such as dendritic cells, mast cells, and epithelial cells. This review will dissect the role of each HIF isoform in myeloid cell function and discuss their impact on acute and chronic inflammatory disorders. Currently, intensive studies are being conducted to illustrate the connection between inflammation and tumorigenesis. Detailed investigation revealing interaction between microenvironmental factors such as hypoxia and immune cells is needed. We will also discuss how hypoxia and HIFs control properties of tumor-associated macrophages and their relationship to tumor formation and progression.
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Affiliation(s)
- Hongxia Z Imtiyaz
- Abramson Family Cancer Research Institute, University of Pennsylvania, 438 BRB II/III, 421 Curie Boulevard, Philadelphia, PA 19104-6160, USA
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