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Perricone C, Bartoloni E, Cafaro G, Caporali R, Gerli R. Correspondence on 'Anti-inflammatory therapy for COVID-19 infection: the case for colchicine'. Ann Rheum Dis 2023; 82:e81. [PMID: 33509794 DOI: 10.1136/annrheumdis-2021-219872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 01/12/2021] [Indexed: 11/04/2022]
Affiliation(s)
- Carlo Perricone
- Rheumatology Unit, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Elena Bartoloni
- Rheumatology Unit, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Giacomo Cafaro
- Rheumatology Unit, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Roberto Caporali
- Department of Clinical Sciences and Community Health, ASS G Pini, University of Milan, Milano, Italy
| | - Roberto Gerli
- Rheumatology Unit, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
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Lajoie J, Kowatsch MM, Mwangi LW, Boily-Larouche G, Oyugi J, Chen Y, Kimani M, Ho EA, Kimani J, Fowke KR. Low-Dose Acetylsalicylic Acid Reduces T Cell Immune Activation: Potential Implications for HIV Prevention. Front Immunol 2021; 12:778455. [PMID: 34868050 PMCID: PMC8637415 DOI: 10.3389/fimmu.2021.778455] [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: 09/16/2021] [Accepted: 10/22/2021] [Indexed: 12/23/2022] Open
Abstract
Introduction Acetylsalicylic acid (ASA) is a well-known and safe anti-inflammatory. At low-dose, it is prescribed to prevent secondary cardiovascular events in those with pre-existing conditions and to prevent preeclampsia. Little is known about how low-dose ASA affects the immune response. In this study, we followed women to assess how ASA use modifies T cells immune phenotypes in the blood and at the genital tract. Methods HIV uninfected women from Kenya were enrolled in this study and followed for one month to assess baseline responses including systemic/mucosal baseline immune activation. Participants then received 81mg of ASA daily for 6 weeks to assess changes to T cell immune activation (systemic and mucosal) relative to baseline levels. Results The concentration of ASA measured in the blood was 58% higher than the level measured at the female genital tract. In the blood, the level of ASA was inversely correlated with the following: the proportion of Th17 expressing HLA-DR (p=0.04), the proportion of effector CD4+ T cells expressing CCR5 (p=0.03) and the proportion of CD8+Tc17 expressing CCR5 (p=0.04). At the genital tract, ASA use correlated with a decreased of activated CD4+T cells [CD4+CCR5+CD161+ (p=0.02) and CD4+CCR5+CD95+ (p=0.001)]. Conclusion This study shows that ASA use impacts the immune response in both the systemic and genital tract compartments. This could have major implications for the prevention of infectious diseases such as HIV, in which the virus targets activated T cells to establish an infection. This could inform guidelines on ASA use in women. Clinical Trial Registration ClinicalTrials.gov, identifier NCT02079077.
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Affiliation(s)
- Julie Lajoie
- Laboratory of Viral Immunology, Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada.,Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
| | - Monika M Kowatsch
- Laboratory of Viral Immunology, Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| | - Lucy W Mwangi
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
| | - Geneviève Boily-Larouche
- Laboratory of Viral Immunology, Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| | - Julius Oyugi
- Laboratory of Viral Immunology, Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada.,Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya.,University of Nairobi Institute for Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya
| | - Yufei Chen
- College of Pharmacy, University of Manitoba, Winnipeg, MB, Canada
| | - Makobu Kimani
- Partners for Health and Development in Africa, Nairobi, Kenya
| | - Emmanuel A Ho
- College of Pharmacy, University of Manitoba, Winnipeg, MB, Canada.,Laboratory for Drug Delivery and Biomaterials, School of Pharmacy, University of Waterloo, Waterloo, ON, Canada
| | - Joshua Kimani
- Laboratory of Viral Immunology, Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada.,University of Nairobi Institute for Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya.,Partners for Health and Development in Africa, Nairobi, Kenya
| | - Keith R Fowke
- Laboratory of Viral Immunology, Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada.,Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya.,Partners for Health and Development in Africa, Nairobi, Kenya.,Department of Community Health Science, University of Manitoba, Winnipeg, MB, Canada
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3
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An engraved surface induces weak adherence and high proliferation of nonadherent cells and microorganisms during culture. Biotechniques 2020; 69:113-125. [PMID: 32527143 DOI: 10.2144/btn-2020-0022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
When cells are cultured in a Petri dish, the adherent cells attach to the bottom of the dish; whereas, the nonadherent cells float in the culture medium. It was observed that nonadherent cells could be induced to adherent-like cells when cultured in an engraved plastic dish (biosimulator). The adherence of these cells to the engraved surface could be prevented with inhibitors specific for adhesion. It was also observed that culturing microorganisms of the environment in a biosimulator induced weak adhesion and high proliferation. Analysis of the microbiome using 16S rRNA profiling demonstrated that the biosimulator was more efficient in inducing proliferation of several phyla of microorganisms compared with culture by conventional techniques.
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Nyambuya TM, Dludla PV, Mxinwa V, Mokgalaboni K, Ngcobo SR, Tiano L, Nkambule BB. The impact of metformin and aspirin on T-cell mediated inflammation: A systematic review of in vitro and in vivo findings. Life Sci 2020; 255:117854. [PMID: 32470453 DOI: 10.1016/j.lfs.2020.117854] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 05/25/2020] [Indexed: 01/08/2023]
Abstract
Chronic inflammation and hyperglycaemia are well-established aspects in the pathogenesis of type 2 diabetes mellitus (T2D), including the progression of its associated complications such as cardiovascular diseases (CVDs). In fact, emerging evidence shows that dysfunctional immune responses due to dysregulated T-cell function aggravates CVD-related complications in T2D. However, there is a lack of specific therapeutic interventions that protect patients with diabetes who are at risk of heart failure. Metformin and aspirin are among the leading therapies being used to protect or at the very least slow the progression of CVD-related complications. The current review made use of major electronic databases to identify and systematically synthesise emerging experimental data on the impact of these pharmacological drugs on T-cell responses. The quality and risk of bias of include evidence were independently assessed by two reviewers. Overwhelming evidence showed that both metformin and aspirin can ameliorate T-cell mediated inflammation by inducing regulatory T-cells (Tregs) polarisation, inhibiting T-cell trafficking and activation as well as signal transducer and activator of transcription (STAT)3 signalling. As a plausible mechanism to mediate T-cell function, metformin showed enhanced potential to regulate mechanistic targets of rapamycin (mTOR), STAT5 and adenosine-monophosphate-activated protein kinase (AMPK) signalling pathways. Whilst aspirin modulated nuclear factor kappa-light-chain-enhancer of activated B-cells (NF-kB) and co-stimulatory signalling pathways and induced T-cell anergy. Overall, synthesised data prompt further investigation into the combinational effect of metformin and aspirin for the management of T2D-related cardiovascular complications.
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Affiliation(s)
- Tawanda Maurice Nyambuya
- School of Laboratory Medicine and Medical Sciences (SLMMS), College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa; Department of Health Sciences, Faculty of Health and Applied Sciences, Namibia University of Science and Technology, Windhoek, Namibia.
| | - Phiwayinkosi Vusi Dludla
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg, South Africa; Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy.
| | - Vuyolwethu Mxinwa
- School of Laboratory Medicine and Medical Sciences (SLMMS), College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
| | - Kabelo Mokgalaboni
- School of Laboratory Medicine and Medical Sciences (SLMMS), College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
| | - Siphamandla Raphael Ngcobo
- School of Laboratory Medicine and Medical Sciences (SLMMS), College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
| | - Luca Tiano
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy.
| | - Bongani Brian Nkambule
- School of Laboratory Medicine and Medical Sciences (SLMMS), College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
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Cao Y, Nishihara R, Qian ZR, Song M, Mima K, Inamura K, Nowak JA, Drew DA, Lochhead P, Nosho K, Morikawa T, Zhang X, Wu K, Wang M, Garrett WS, Giovannucci EL, Fuchs CS, Chan AT, Ogino S. Regular Aspirin Use Associates With Lower Risk of Colorectal Cancers With Low Numbers of Tumor-Infiltrating Lymphocytes. Gastroenterology 2016; 151:879-892.e4. [PMID: 27475305 PMCID: PMC5159194 DOI: 10.1053/j.gastro.2016.07.030] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 06/26/2016] [Accepted: 07/19/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND & AIMS Aspirin use reduces colorectal cancer risk. Aspirin, a nonsteroidal anti-inflammatory drug, inhibits prostaglandin-endoperoxide synthase 2 (PTGS2 or cyclooxygenase-2); PTGS2 promotes inflammation and suppresses T-cell-mediated adaptive immunity. We investigated whether the inverse association of aspirin use with colorectal carcinoma risk was stronger for tumors with lower degrees of lymphocytic infiltrates than for tumors with higher degrees of lymphocytic infiltrates. METHODS We collected aspirin use data biennially from participants in the Nurses' Health Study and Health Professionals Follow-up Study. Participants were asked whether they took aspirin in most weeks, the number of tablets taken per week, and years of aspirin use. We collected available tumor specimens (n = 1458) from pathology laboratories in the United States. A pathologist confirmed the diagnosis of colorectal adenocarcinoma (excluding anal squamous cell carcinoma), and evaluated histopathology features, including patterns and degrees of lymphocytic infiltrates within and around tumor areas. Person-years of follow-up evaluation were accrued from the date of return of questionnaires until dates of colorectal cancer diagnosis, death, or the end of follow-up evaluation (June 2010). Duplication-method Cox proportional hazards regression was used to assess the association of aspirin with the incidence of colorectal carcinoma subgroups according to the degree of tumor-infiltrating lymphocytes (TILs), intratumoral periglandular reaction, peritumoral reaction, or Crohn's-like reaction. RESULTS We documented 1458 rectal and colon cancers. The inverse association between regular aspirin use and colorectal cancer risk significantly differed by concentrations of TILs (Pheterogeneity = .007). Compared with nonregular use, regular aspirin use was associated with a lower risk of tumors that had low levels of TILs (relative risk, 0.72; 95% confidence interval, 0.63-0.81), and strength of the association depended on aspirin dose and duration (both Ptrend < .001). In contrast, aspirin use was not associated with a risk of tumors having intermediate or high levels of TILs. This differential association was consistent regardless of the status of tumor microsatellite instability, mutations in BRAF, or expression of PTGS2. Regular aspirin use was associated with a lower risk of tumors that contained low levels of CD3+ T cells, CD8+ T cells, or CD45RO (PTPRC)+ T cells (measured by immunohistochemistry and computer-assisted image analysis). CONCLUSIONS Based on data from the prospective cohort studies, regular use of aspirin is associated with a lower risk of colorectal carcinomas with low concentrations of TILs. These findings indicate that the immune response in the tumor microenvironment could be involved in the chemopreventive effects of aspirin.
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Affiliation(s)
- Yin Cao
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA,Division of Gastroenterology, Massachusetts General Hospital, Boston, MA,Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Reiko Nishihara
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA,Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA,Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Zhi Rong Qian
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Mingyang Song
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA,Division of Gastroenterology, Massachusetts General Hospital, Boston, MA,Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Kosuke Mima
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | | | - Jonathan A. Nowak
- Division of MPE Molecular Pathological Epidemiology, Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - David A. Drew
- Division of Gastroenterology, Massachusetts General Hospital, Boston, MA,Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Paul Lochhead
- Division of Gastroenterology, Massachusetts General Hospital, Boston, MA,Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Katsuhiko Nosho
- Department of Gastroenterology, Rheumatology and Clinical Immunology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Teppei Morikawa
- Department of Pathology, University of Tokyo Hospital, Tokyo, Japan
| | - Xuehong Zhang
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Kana Wu
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Molin Wang
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA,Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Wendy S. Garrett
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA,Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Edward L. Giovannucci
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA,Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Charles S. Fuchs
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Andrew T. Chan
- Division of Gastroenterology, Massachusetts General Hospital, Boston, MA,Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA,Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Shuji Ogino
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; Division of MPE Molecular Pathological Epidemiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
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6
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Xu X. Plant Polysaccharides and Their Effects on Cell Adhesion. POLYSACCHARIDES 2015. [DOI: 10.1007/978-3-319-16298-0_67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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7
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Plant polysaccharides and their effects on cell adhesion. POLYSACCHARIDES 2014. [DOI: 10.1007/978-3-319-03751-6_67-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Hussain M, Javeed A, Ashraf M, Zhao Y, Mukhtar MM, Rehman MU. Aspirin and immune system. Int Immunopharmacol 2011; 12:10-20. [PMID: 22172645 DOI: 10.1016/j.intimp.2011.11.021] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2011] [Revised: 11/26/2011] [Accepted: 11/29/2011] [Indexed: 12/12/2022]
Abstract
The time-tested gradual exploration of aspirin's diverse pharmacological properties has made it the most reliable therapeutic agent worldwide. In addition to its well-argued anti-inflammatory effects, many new and exciting data have emerged regarding the role of aspirin in cells of the immune system and certain immunopathological states. For instance, aspirin induces tolerogenic activity in dendritic cells and determines the fate of naive T cells to regulatory phenotypes, which suggests its immunoregulatory potential in relevance to immune tolerance. It also displays some intriguing traits to modulate the innate and adaptive immune responses. In this article, the immunomodulatory relation of aspirin to different immune cells, such as neutrophils, macrophages, dendritic cells (DCs), natural killer (NK) cells, and the T and B lymphocytes has been highlighted. Moreover, the clinical prospects of aspirin in terms of autoimmunity, allograft rejection and immune tolerance have also been outlined.
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Affiliation(s)
- Muzammal Hussain
- Department of Pharmacology & Toxicology, University of Veterinary and Animal Sciences, Lahore, Pakistan
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Tailor A, Wood KC, Wallace JL, Specian RD, Granger DN. Roles of platelet and endothelial cell COX-1 in hypercholesterolemia-induced microvascular dysfunction. Am J Physiol Heart Circ Physiol 2007; 293:H3636-42. [PMID: 17933963 DOI: 10.1152/ajpheart.01105.2006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Aspirin is a common preventative therapy in patients at risk for cardiovascular diseases, yet little is known about how aspirin protects the vasculature in hypercholesterolemia. The present study determines whether aspirin, nitric oxide-releasing aspirin (NCX-4016), a selective cyclooxygenase (COX)-1 inhibitor (SC560), or genetic deficiency of COX-1 prevents the inflammatory and prothrombogenic phenotype assumed by hypercholesterolemic (HC) venules. Aspirin or NCX-4016 (60 mg/kg) was administered orally for the last week of a 2-wk HC diet. COX-1-deficient (COX-1(-/-)) and wild-type (WT) mice were transplanted with WT (WT/COX-1(-/-)) or COX-1(-/-) (COX-1(-/-)/WT) bone marrow, respectively. HC-induced adhesion of platelets and leukocytes in murine intestinal venules, observed with intravital fluorescence microscopy, was greatly attenuated in aspirin-treated mice. Adhesion of aspirin-treated platelets in HC venules was comparable to untreated platelets, whereas adhesion of SC560-treated platelets was significantly attenuated. HC-induced leukocyte and platelet adhesion in COX-1(-/-)/WT chimeras was comparable to that in SC560-treated mice, whereas the largest reductions in blood cell adhesion were in WT/COX-1(-/-) chimeras. NCX-4016 treatment of platelet recipients or donors attenuated leukocyte and platelet adhesion independent of platelet COX-1 inhibition. Platelet- and endothelial cell-associated COX-1 promote microvascular inflammation and thrombogenesis during hypercholesterolemia, yet nitric oxide-releasing aspirin directly inhibits platelets independent of COX-1.
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Affiliation(s)
- Anitaben Tailor
- Department of Molecular and Cellular Physiology, Health Sciences Center, Louisiana State University, 1501 Kings Highway, Shreveport, LA 71130-3932, USA
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Yotsui T, Yasuda O, Kawamoto H, Higuchi M, Chihara Y, Umemoto E, Tanaka T, Miyasaka M, Rakugi H, Ogihara T. Aspirin prevents adhesion of T lymphoblasts to vascular smooth muscle cells. FEBS Lett 2007; 581:427-32. [PMID: 17239863 DOI: 10.1016/j.febslet.2006.12.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2006] [Revised: 12/21/2006] [Accepted: 12/22/2006] [Indexed: 10/23/2022]
Abstract
In the development of atherosclerosis, inflammatory cells adhere to and migrate into the vascular walls by interacting with vascular smooth muscle cells. To investigate the mechanism of aspirin's anti-atherogenic activity, we examined whether aspirin inhibits the adhesion of lymphocytes to human aortic smooth muscle cells (AoSMC). Aspirin inhibited T-cell adhesion to AoSMC activated by interleukin 1beta (IL-1beta) in a dose-dependent manner. Antibodies to the adhesion molecules ICAM-1 or VCAM-1, but not to E-selectin, prevented T-cell adhesion. ICAM-1 and VCAM-1 expression stimulated by IL-1beta was reduced by the treatment with aspirin, whereas the expression of E-selectin was unaffected. Nuclear factor kappaB (NF-kappaB) activity was enhanced by IL-1beta and reduced by aspirin, indicating that decreased ICAM-1 and VCAM-1 expression was due to reduced NF-kappaB activity.Thus, aspirin inhibits the adhesion of Jurkat T cells to IL-1beta-activated AoSMC by reducing NF-kappaB activity and decreasing expression of ICAM-1 and VCAM-1, and may prevent the development of atherosclerosis.
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MESH Headings
- Antibodies, Monoclonal/pharmacology
- Aspirin/pharmacology
- Atherosclerosis/prevention & control
- Cell Adhesion/drug effects
- Cell Survival/drug effects
- Cells, Cultured
- Humans
- In Vitro Techniques
- Intercellular Adhesion Molecule-1/physiology
- Jurkat Cells
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/physiology
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/physiology
- NF-kappa B/metabolism
- T-Lymphocytes/cytology
- T-Lymphocytes/drug effects
- T-Lymphocytes/physiology
- Vascular Cell Adhesion Molecule-1/physiology
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Affiliation(s)
- Takamori Yotsui
- Department of Geriatric Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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Fiorucci S, Antonelli E, Distrutti E, Rizzo G, Mencarelli A, Orlandi S, Zanardo R, Renga B, Di Sante M, Morelli A, Cirino G, Wallace JL. Inhibition of hydrogen sulfide generation contributes to gastric injury caused by anti-inflammatory nonsteroidal drugs. Gastroenterology 2005; 129:1210-24. [PMID: 16230075 DOI: 10.1053/j.gastro.2005.07.060] [Citation(s) in RCA: 302] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2005] [Accepted: 07/06/2005] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS Hydrogen sulfide (H(2)S), an endogenous gaseous mediator that causes vasodilation, is generated in mammalian tissues by cystathionine beta-synthase (CBS) and cystathionine-gamma-lyase (CSE). Here, we have investigated the role of H(2)S in a rodent model of nonsteroidal anti-inflammatory drug (NSAID) gastropathy. METHODS Rats were given acetyl salycilic acid (ASA) or an NSAID alone or in combination with NaHS, an H(2)S donor, and killed 3 hours later. Gastric blood flow was measured by laser-Doppler flowmetry, whereas intravital microscopy was used to quantify adhesion of leukocytes to mesenteric postcapillary endothelium. RESULTS At a dose of 100 micromol/kg, NaHS attenuated by 60%-70% the gastric mucosal injury, and tumor necrosis factor (TNF)-alpha, intercellular adhesion molecule (ICAM)-1, and lymphocyte function-associated antigen (LFA)-1 mRNA up-regulation induced by NSAIDs (P < .05) NaHS administration prevented the associated reduction of gastric mucosal blood flow (P < .05) and reduced ASA-induced leukocyte adherence in mesenteric venules. NaHS did not affect suppression of prostaglandin E(2) (PGE(2)) synthesis by NSAIDs. Glibenclamide, a K(ATP) channel inhibitor, and DL-propargylglycine, a CSE inhibitor, exacerbated, whereas pinacidil, a K(ATP) opener, attenuated gastric injury caused by ASA. Exposure to NSAIDs reduced H(2)S formation and CSE expression (mRNA and protein) and activity by 60%-70%. By promoter deletion and mutation analysis, an Sp1 consensus site was identified in the CSE promoter. Exposure to NSAIDs inhibits Sp1 binding to its promoter and abrogates CSE expression in HEK-293 cells transfected with a vector containing the core CSE promoter. Exposure to NSAIDs inhibits Sp1 and ERK phosphorylation. CONCLUSIONS These data establish a physiologic role for H(2)S in regulating the gastric microcirculation and identify CSE as a novel target for ASA/NSAIDs.
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Affiliation(s)
- Stefano Fiorucci
- Dipartimento di Medicina Clinica, Patologia, Clinica di Gastroenterologia ed Endoscopia Digestiva, University of Perugia, Italy.
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Yang ZF, Ho DWY, Chu ACY, Wang YQ, Fan ST. Linking inflammation to acute rejection in small-for-size liver allografts: the potential role of early macrophage activation. Am J Transplant 2004; 4:196-209. [PMID: 14974940 DOI: 10.1046/j.1600-6143.2003.00313.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This study aims to investigate the immunological status of small-for-size liver allografts and possible mechanism that contributes to the accelerated immune response in these allografts. Eight experimental groups were: whole isografts; 40% isografts; whole allografts, no treatment; 40% allografts, no treatment; whole allografts with sodium salicylate intraperitoneal injection, D0-3; 40% allografts with sodium salicylate, D0-3; whole allografts with FK506 intramuscular injection D0-3, and 40% allografts with FK506, D0-3. The 40% allografts survived significantly shorter than whole allografts (p=0.02). At 72 h after reperfusion, a higher number of macrophages infiltrated into the periportal area of small-for-size allografts than whole allografts. Remarkable up-regulation of interleukin-1beta (IL-1beta), interleukin-2 (IL-2), interleukin-10 (IL-10) and interferon-gamma (IFN-gamma) messenger RNA (mRNA) levels were detected in small-for-size allografts within 24 h after reperfusion. Sodium salicylate administration reduced IL-1beta and IFN-gamma mRNA in both small-for-size and whole allografts, but it could decrease IL-2 and IL-10 mRNA levels only in small-for-size allografts. In vitro study revealed that CD80, CD86 and CD11b expression on macrophages was augmented after IL-1beta stimulation, whereas the up-regulation could be blocked by sodium salicylate. In conclusion, early activation of macrophages as a result of graft injury might play an important role in the accelerated acute rejection process in small-for-size allografts.
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Affiliation(s)
- Zhen-Fan Yang
- Centre for the Study of Liver Disease and Department of Surgery, The University of Hong Kong, Pokfulam, Hong Kong, China
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Fan H, Turck CW, Derynck R. Characterization of growth factor-induced serine phosphorylation of tumor necrosis factor-alpha converting enzyme and of an alternatively translated polypeptide. J Biol Chem 2003; 278:18617-27. [PMID: 12621058 DOI: 10.1074/jbc.m300331200] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Tumor necrosis factor-alpha converting enzyme (TACE) is a prototype member of the adamalysin family of transmembrane metalloproteases that effects ectodomain cleavage and release of many transmembrane proteins, including transforming growth factor-alpha. Growth factors that act through tyrosine kinase receptors, as well as other stimuli, induce shedding through activation of the Erk mitogen-activated protein (MAP) kinase pathway without the need of new protein synthesis. How MAP kinase regulates shedding by TACE is not known. We now report that the cytoplasmic domain of TACE is phosphorylated in response to growth factor stimulation. We also identified a naturally expressed smaller polypeptide corresponding to most of the cytoplasmic domain of TACE. This protein, which we named SPRACT, is derived through alternative translation of the TACE-coding sequence and is, similarly to TACE, phosphorylated in response to growth factor and phorbol 12-myristate 13-acetate stimulation. Phosphoamino acid analysis revealed that growth factor-induced phosphorylation of TACE occurs only on serine and not on threonine or tyrosine. Tryptic mapping experiments coupled with site-directed mutagenesis identified Ser(819) as the major target of growth factor-induced phosphorylation, whereas Ser(791) undergoes dephosphorylation in response to growth factor stimulation. The phosphorylation of Ser(819), but not the dephosphorylation of Ser(791), depends on activation of the Erk MAP kinase pathway. Increased SPRACT expression or mutation of the TACE cytoplasmic domain to inactivate growth factor-induced phosphorylation did not detectably affect growth factor-induced shedding of transmembrane transforming growth factor-alpha by TACE. The roles of SPRACT and the cytoplasmic phosphorylation of TACE remain to be defined.
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Affiliation(s)
- Huizhou Fan
- Department of Growth and Development, and Anatomy, Programs in Cell Biology and Developmental Biology, University of California, San Francisco, California 94143, USA.
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Vijayan KV, Huang TC, Liu Y, Bernardo A, Dong JF, Goldschmidt-Clermont PJ, Alevriadou BR, Bray PF. Shear stress augments the enhanced adhesive phenotype of cells expressing the Pro33 isoform of integrin beta3. FEBS Lett 2003; 540:41-6. [PMID: 12681480 DOI: 10.1016/s0014-5793(03)00170-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Adhesion of platelets to the exposed extracellular matrix proteins at sites of vascular injury is partly regulated by the local fluid shear stress. Because the Leu33Pro (Pl(A)) polymorphism of integrin beta(3) confers only a modest increase in adhesion under static conditions, we used CHO and 293 cells expressing the Leu33 or Pro33 isoform of beta(3) in flow chamber experiments to test whether shear forces would alter the Pl(A) adhesive phenotype. We found that shear force augmented the Pro33-mediated enhanced adhesion to fibrinogen. This Pro33-dependent enhancement was aspirin-sensitive and was also observed on immobilized von Willebrand factor and cryoprecipitate, but not fibronectin. Thus, shear stress enhances the adhesive phenotype of the Pro33 cells to multiple physiologic substrates.
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Affiliation(s)
- K Vinod Vijayan
- Department of Medicine, Baylor College of Medicine, One Baylor Plaza, BCM 286, N1319, Houston, TX 77030, USA
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15
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Borsig L, Wong R, Hynes RO, Varki NM, Varki A. Synergistic effects of L- and P-selectin in facilitating tumor metastasis can involve non-mucin ligands and implicate leukocytes as enhancers of metastasis. Proc Natl Acad Sci U S A 2002; 99:2193-8. [PMID: 11854515 PMCID: PMC122341 DOI: 10.1073/pnas.261704098] [Citation(s) in RCA: 326] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/27/2001] [Indexed: 12/29/2022] Open
Abstract
P-selectin facilitates human carcinoma metastasis in immunodeficient mice by mediating early interactions of platelets with bloodborne tumor cells via their cell surface mucins, and this process can be blocked by heparin [Borsig, L., Wong, R., Feramisco, J., Nadeau, D. R., Varki, N. M. & Varki, A. (2001) Proc. Natl. Acad. Sci. USA 98, 3352-3357]. Here we show similar findings with a murine adenocarcinoma in syngeneic immunocompetent mice but involving a different P-selectin ligand, possibly a sulfated glycolipid. Thus, metastatic spread can be facilitated by tumor cell selectin ligands other than mucins. Surprisingly, L-selectin expressed on endogenous leukocytes also facilitates metastasis in both the syngeneic and xenogeneic (T and B lymphocyte deficient) systems. PL-selectin double deficient mice show that the two selectins work synergistically. Although heparin can block both P- and L-selectin in vitro, the in vivo effect of a single heparin dose given before tumor cells seems to be completely accounted for by blockade of P-selectin function. Thus, L-selectin on neutrophils, monocytes, and/or NK cells has a role in facilitating metastasis, acting beyond the early time points wherein P-selectin mediates interactions of platelet with tumor cells.
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Affiliation(s)
- Lubor Borsig
- Glycobiology Research and Training Center and the Cancer Center, Department of Medicine and Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA 92093-0687, USA
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