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Frigerio B, Coggi D, Bonomi A, Amato M, Capra N, Colombo GI, Sansaro D, Ravani A, Savonen K, Giral P, Gallo A, Pirro M, Gigante B, Eriksson P, Strawbridge RJ, Mulder DJ, Tremoli E, Veglia F, Baldassarre D. Determinants of Carotid Wall Echolucency in a Cohort of European High Cardiovascular Risk Subjects: A Cross-Sectional Analysis of IMPROVE Baseline Data. Biomedicines 2024; 12:737. [PMID: 38672093 PMCID: PMC11154292 DOI: 10.3390/biomedicines12040737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/28/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024] Open
Abstract
Echolucency, a measure of plaque instability associated with increased cardiovascular risk, can be assessed in both the carotid plaque and the plaque-free common carotid intima-media (IM) complex as a gray-scale median (plaque-GSM and IM-GSM, respectively). The impact of specific vascular risk factors on these two phenotypes remains uncertain, including the nature and extent of their influence. This study aims to seek the determinants of plaque-GSM and IM-GSM. Plaque-GSM and IM-GSM were measured in subjects from the IMPROVE study cohort (aged 54-79, 46% men) recruited in five European countries. Plaque-GSM was measured in subjects who had at least one IMTmax ≥ 1.5 mm (n = 2138), whereas IM-GSM was measured in all subjects included in the study (n = 3188). Multiple regression with internal cross-validation was used to find independent predictors of plaque-GSM and IM-GSM. Plaque-GSM determinants were plaque-size (IMTmax), and diastolic blood pressure. IM-GSM determinants were the thickness of plaque-free common carotid intima-media complex (PF CC-IMTmean), height, systolic blood pressure, waist/hip ratio, treatment with fibrates, mean corpuscular volume, treatment with alpha-2 inhibitors (sartans), educational level, and creatinine. Latitude, and pack-yearscode were determinants of both plaque-GSM and IM-GSM. The overall models explain 12.0% of plaque-GSM variability and 19.7% of IM-GSM variability. A significant correlation (r = 0.51) was found between plaque-GSM and IM-GSM. Our results indicate that IM-GSM is a weighty risk marker alternative to plaque-GSM, offering the advantage of being readily measurable in all subjects, including those in the early phases of atherosclerosis where plaque occurrence is relatively infrequent.
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Affiliation(s)
- Beatrice Frigerio
- Centro Cardiologico Monzino, IRCCS, 20138 Milan, Italy; (B.F.); (D.C.); (A.B.); (M.A.); (N.C.); (G.I.C.); (D.S.); (A.R.)
| | - Daniela Coggi
- Centro Cardiologico Monzino, IRCCS, 20138 Milan, Italy; (B.F.); (D.C.); (A.B.); (M.A.); (N.C.); (G.I.C.); (D.S.); (A.R.)
| | - Alice Bonomi
- Centro Cardiologico Monzino, IRCCS, 20138 Milan, Italy; (B.F.); (D.C.); (A.B.); (M.A.); (N.C.); (G.I.C.); (D.S.); (A.R.)
| | - Mauro Amato
- Centro Cardiologico Monzino, IRCCS, 20138 Milan, Italy; (B.F.); (D.C.); (A.B.); (M.A.); (N.C.); (G.I.C.); (D.S.); (A.R.)
| | - Nicolò Capra
- Centro Cardiologico Monzino, IRCCS, 20138 Milan, Italy; (B.F.); (D.C.); (A.B.); (M.A.); (N.C.); (G.I.C.); (D.S.); (A.R.)
| | - Gualtiero I. Colombo
- Centro Cardiologico Monzino, IRCCS, 20138 Milan, Italy; (B.F.); (D.C.); (A.B.); (M.A.); (N.C.); (G.I.C.); (D.S.); (A.R.)
| | - Daniela Sansaro
- Centro Cardiologico Monzino, IRCCS, 20138 Milan, Italy; (B.F.); (D.C.); (A.B.); (M.A.); (N.C.); (G.I.C.); (D.S.); (A.R.)
| | - Alessio Ravani
- Centro Cardiologico Monzino, IRCCS, 20138 Milan, Italy; (B.F.); (D.C.); (A.B.); (M.A.); (N.C.); (G.I.C.); (D.S.); (A.R.)
| | - Kai Savonen
- Foundation for Research in Health Exercise and Nutrition, Kuopio Research Institute of Exercise Medicine, 70100 Kuopio, Finland;
- Department of Clinical Physiology and Nuclear Medicine, Kuopio University Hospital, 70210 Kuopio, Finland
| | - Philippe Giral
- INSERM, Unité de Recherche sur les Maladies Cardiovasculaires, le Métabolisme et la Nutrition, ICAN, Sorbonne Université, F-75013 Paris, France; (P.G.); (A.G.)
- Lipidology and Cardiovascular Prevention Unit, Department of Nutrition, APHP, Sorbonne Université, Hôpital Pitié-Salpêtrière, F-75013 Paris, France
| | - Antonio Gallo
- INSERM, Unité de Recherche sur les Maladies Cardiovasculaires, le Métabolisme et la Nutrition, ICAN, Sorbonne Université, F-75013 Paris, France; (P.G.); (A.G.)
- Lipidology and Cardiovascular Prevention Unit, Department of Nutrition, APHP, Sorbonne Université, Hôpital Pitié-Salpêtrière, F-75013 Paris, France
| | - Matteo Pirro
- Internal Medicine, Angiology and Arteriosclerosis Diseases, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy;
| | - Bruna Gigante
- Department of Medicine Solna, Division of Cardiovascular Medicine, Karolinska Institutet, Stockholm, Karolinska University Hospital, 17177 Solna, Sweden; (B.G.); (P.E.); (R.J.S.)
| | - Per Eriksson
- Department of Medicine Solna, Division of Cardiovascular Medicine, Karolinska Institutet, Stockholm, Karolinska University Hospital, 17177 Solna, Sweden; (B.G.); (P.E.); (R.J.S.)
| | - Rona J. Strawbridge
- Department of Medicine Solna, Division of Cardiovascular Medicine, Karolinska Institutet, Stockholm, Karolinska University Hospital, 17177 Solna, Sweden; (B.G.); (P.E.); (R.J.S.)
- School of Health and Wellbeing, University of Glasgow, Glasgow G12 8TB, UK
- Health Data Research UK, Glasgow G12 8TA, UK
| | - Douwe J. Mulder
- Department of Internal Medicine, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands;
| | - Elena Tremoli
- Maria Cecilia Hospital, GVM Care & Research, 48033 Cotignola, Italy; (E.T.); (F.V.)
| | - Fabrizio Veglia
- Maria Cecilia Hospital, GVM Care & Research, 48033 Cotignola, Italy; (E.T.); (F.V.)
| | - Damiano Baldassarre
- Centro Cardiologico Monzino, IRCCS, 20138 Milan, Italy; (B.F.); (D.C.); (A.B.); (M.A.); (N.C.); (G.I.C.); (D.S.); (A.R.)
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, 20129 Milan, Italy
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Gamboa R, Jaramillo-Estrella MJ, Martínez-Alvarado MDR, Soto ME, Torres-Paz YE, Gonzalo-Calvo DD, Del Valle-Mondragón L, López-Marure R, Llorente-Cortés VC, Huesca-Gómez C. Monocyte Low-Density Lipoprotein Receptor-Related Protein 1 (LRP1) Expression Correlates with cIMT in Mexican Hypertensive Patients. Arq Bras Cardiol 2021; 116:56-65. [PMID: 33566965 PMCID: PMC8159500 DOI: 10.36660/abc.20190535] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 03/16/2020] [Indexed: 12/26/2022] Open
Abstract
Fundamento A hipertensão arterial (HTA) representa um grande fator de risco de morbidade e mortalidade cardiovascular. Ainda não se sabe que mecanismos moleculares específicos estão associados ao desenvolvimento de hipertensão essencial. Objetivo Neste trabalho, analisamos a associação entre expressão mRNA de monócito LRP1, expressão de proteína LRP1, e espessura íntima-média de carótida (EIMC) de pacientes com hipertensão essencial. Métodos A expressão mRNA de monócito LRP1 e os níveis de proteína e EIMC foram quantificados em 200 indivíduos mexicanos, sendo 91 normotensos (NT) e 109 hipertensos (HT) A significância estatística foi definida em p < 0,05. Resultados O grupo de pacientes HT tinha EIMC maior altamente significativa em comparação com os pacientes NT (p = 0,002), e isso está relacionado ao aumento na expressão mRNA de LRP1 (6,54 versus. 2,87) (p = 0,002) e expressão de proteína LRP1 (17,83 versus 6,25), respectivamente (p = 0,001). Essas diferenças foram mantidas mesmo quando dividimos nossos grupos de estudo, levando em consideração apenas aqueles que apresentavam dislipidemia na expressão de mRNA (p = 0,041) e de proteínas (p < 0,001). Também se identificou que a indução de LRP1 mediada por LRP1 em monócitos em de maneira dependente de dose e tempo, com diferença significativa em NT versus HT (0,195 ± 0,09 versus 0,226 ± 0,12, p = 0,046). Conclusão Foi encontrado um aumento em EIMC em indivíduos com hipertensão, associada a expressões de proteína LRP1 e mRNA mais altas em monócitos, independente da presença de dislipidemia em pacientes HT. Esses resultados que a upregulation de LRP1 em monócitos de pacientes hipertensos mexicanos poderia estar envolvida na diminuição da EIMC. (Arq Bras Cardiol. 2021; 116(1):56-65)
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Affiliation(s)
- Ricardo Gamboa
- Instituto Nacional de Cardiologia Ignacio Chavez, Ciudad de México - México
| | | | | | - Maria Elena Soto
- Instituto Nacional de Cardiologia Ignacio Chavez, Ciudad de México - México
| | | | - David de Gonzalo-Calvo
- Hospital de Sant Pau - Lipids and Cardiovascular Pathology Group, Barcelona, Catalunya - Espanha
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Oxidative Stress Indexes for Diagnosis of Health or Disease in Humans. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:4128152. [PMID: 31885788 PMCID: PMC6899293 DOI: 10.1155/2019/4128152] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/11/2019] [Accepted: 10/23/2019] [Indexed: 12/13/2022]
Abstract
Oxidative stress (OS) is the imbalance between oxidant and antioxidant molecules, in favor of oxidants, that causes aging and disease. Many studies have been published that demonstrate the relationship between OS and human health and disease; however, the following questions arise: (i) how are we sure that the OS is present in a biological process? (ii) Is the OS reported in the different investigations equivalent? (iii) What are the best oxidant and antioxidant markers for OS diagnosis? (iv) Can we establish the types and the intensity of the OS? (v) Does OS index could be useful for research and/or application in clinical medicine? In this regard, several indexes have been proposed to measure OS in humans relative to the state of health and disease, among which the following can be highlighted: Oxidative Stress Index (OSI), Tiol Ratios (-SH/TT, -SS/-SH, and-SS/TT), Glutathione Ratio (GSSG/GSH), Oxidative Stress Score (OSS), and OXY-index. Therefore, the aim of this review is to present the state of the art of knowledge about OS indexes for diagnosis of health or disease in humans. We searched for articles in English or Spanish in the PubMed/MEDLINE and Scopus electronic databases published up until May 2019. The keywords used were “oxidative stress,” “index,” and “oxidative stress index.” It was identified 11479 records in both databases, and 490 articles were analyzed. Our review suggests that all indexes analyzed allow diagnose and differentiate the OS related to human health and disease. Also, the studies on OSI, Oxy-score, and OSS indexes have proven to be reliable, practical, and with clinical utility. However, it is necessary to continue with longitudinal studies, especially assess the usefulness of the indexes in the clinical prognosis, and make comparative studies between the different indexes.
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Lind L. A detailed lipoprotein profile in relation to intima-media thickness and echogenicity of three major arteries. Clin Physiol Funct Imaging 2019; 39:415-421. [PMID: 31529768 DOI: 10.1111/cpf.12594] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 09/09/2019] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To investigate differences in risk-factor profile, with special emphasis on detailed characterization of the lipoprotein profile, for intima-media thickness (IMT) and echogenicity of the intima-media complex (IM-GSM) in three major arteries: the carotid, femoral and brachial arteries. METHODS IMT and IM-GSM were measured by ultrasound in the carotid, femoral and brachial arteries in 778 subjects, all aged 75 years (50% women), in the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study, in which a detailed lipoprotein profile was also determined by nuclear magnetic resonance spectroscopy. RESULTS First, IMT was considerably lower, and IM-GSM higher, in the brachial artery compared to the other two arteries. Second, IMT and IM-GSM in the arteries were related to each other. Third, significant different traditional risk-factor profiles were seen for both IMT and IM-GSM, with generally weaker relationships for IMT in the femoral and brachial arteries compared with the carotid artery. Fourth, the strength of associations between an atherogenic lipoprotein profile and IMT in the carotid artery was attenuated in the femoral artery and virtually absent in the brachial artery. Fifth, slightly different lipoprotein profiles were seen for IM-GSM in the three arteries. CONCLUSION Differences between the carotid, femoral and brachial artery IMT and IM-GSM were seen regarding the traditional risk factors, as well as the lipoprotein profile.
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Affiliation(s)
- Lars Lind
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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Stein JH, Yeh E, Weber JM, Korcarz C, Ridker PM, Tawakol A, Hsue PY, Currier JS, Ribaudo H, Mitchell CKC. Brachial Artery Echogenicity and Grayscale Texture Changes in HIV-Infected Individuals Receiving Low-Dose Methotrexate. Arterioscler Thromb Vasc Biol 2019; 38:2870-2878. [PMID: 30571173 DOI: 10.1161/atvbaha.118.311807] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Objective- We evaluated the biological effects of low-dose methotrexate on 3 novel brachial artery grayscale ultrasound measures that may indicate subclinical arterial injury. Approach and Results- Exploratory analysis from a clinical trial of people with HIV infection at increased cardiovascular disease risk who were randomly assigned to low-dose methotrexate (target dose 15 mg/wk) or placebo. Brachial artery ultrasound grayscale median, gray level difference statistic texture-contrast (GLDS-CON), and gray level texture entropy were measured at baseline and after 24 weeks of intervention. Findings from the intention-to-treat (N=148) and adequately-dosed (N=118) populations were consistent, so the adequately-dosed population results are presented. Participants were a median (Q1, Q3) age of 54 (50, 60) years. After 24 weeks, the low-dose methotrexate intervention was associated with a 25.4% (-18.1, 58.6; P=0.007) increase in GLDS-CON compared with 1.3% (-29.1, 44.7; P=0.97) with placebo ( P=0.05) and a 0.10 u (-0.06, 0.23; P=0.026) increase in entropy compared with 0.02 u (-0.11, 0.14; P=0.54) with placebo ( P=0.14). At week 24, changes in CD4+ T cells correlated inversely with changes in GLDS-CON (ρ=-0.20; P=0.031), and entropy (ρ=-0.21; P=0.023). Changes in D-dimer levels, but no other inflammatory biomarkers, also correlated inversely with changes in GLDS-CON (ρ=-0.23; P=0.014) and entropy (ρ=-0.26; P=0.005). Conclusions- Brachial artery GLDS-CON and entropy increased after 24 weeks of low-dose methotrexate, though the latter was not significantly different from placebo. Grayscale changes were associated with decreases in CD4+ T-cell and D-dimer concentrations and may indicate favorable arterial structure changes.
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Affiliation(s)
- James H Stein
- From the Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison (J.H.S., J.M.W., C.K., C.K.C.M.)
| | - Eunice Yeh
- Center for Biostatistics in AIDS Research, Harvard T.H. Chan School of Public Health, Boston, MA (E.Y., H.R.)
| | - Joanne M Weber
- From the Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison (J.H.S., J.M.W., C.K., C.K.C.M.)
| | - Claudia Korcarz
- From the Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison (J.H.S., J.M.W., C.K., C.K.C.M.)
| | - Paul M Ridker
- Cardiology Division, Massachusetts General Hospital and Harvard Medical School, Boston (P.M.R., A.T.)
| | - Ahmed Tawakol
- Cardiology Division, Massachusetts General Hospital and Harvard Medical School, Boston (P.M.R., A.T.)
| | - Priscilla Y Hsue
- Department of Medicine, University of California-San Francisco School of Medicine (P.Y.H.)
| | - Judith S Currier
- Division of Infectious Diseases, David Geffen School of Medicine at University of California-Los Angeles (J.S.C.)
| | - Heather Ribaudo
- Center for Biostatistics in AIDS Research, Harvard T.H. Chan School of Public Health, Boston, MA (E.Y., H.R.)
| | - Carol K C Mitchell
- From the Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison (J.H.S., J.M.W., C.K., C.K.C.M.)
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Berroug J, Korcarz CE, Mitchell CK, Weber JM, Tian L, McDermott MM, Stein JH. Brachial artery intima-media thickness and grayscale texture changes in patients with peripheral artery disease receiving supervised exercise training in the PROPEL randomized clinical trial. Vasc Med 2018; 24:12-22. [PMID: 30418100 DOI: 10.1177/1358863x18804050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We performed an exploratory analysis to evaluate the effects of a treadmill exercise program on brachial artery (BA) intima-media thickness (IMT) and three BA grayscale ultrasound measures that may indicate subclinical arterial injury. Data were from a clinical trial in individuals with peripheral artery disease who were randomly assigned to treadmill exercise training or attention control. B-mode ultrasonography was performed at baseline and after 26 weeks. BA IMT, grayscale median (GSM), entropy, and gray-level difference statistic-contrast (GLDS-CON) were measured by a single reader. The 184 participants were (mean (SD)) 66.7 (8.2) years old and had an ankle-brachial index of 0.70 (0.18). Exercise training was associated with a 0.01 (0.06) mm ( p = 0.025) reduction in BA IMT compared to 0.00 (0.05) mm ( p = 0.807) in the control group (between-group p = 0.061). BA GSM, entropy, and GLDS-CON did not change significantly with exercise. Improvements in the 6-minute walk distance correlated with increases in resting BA blood flow ( r = 0.23, p = 0.032), flow-mediated dilation ( r = 0.24, p = 0.022), diameter ( r = 0.29, p = 0.005), entropy ( r = 0.21, p = 0.047), and GLDS-CON ( r = 0.22, p = 0.041). In a post hoc analysis, BA IMT improved significantly with treadmill exercise training but did not change with attention control; however, the between-group difference did not reach statistical significance. With exercise, improvements in the 6-minute walk distance were associated with improved endothelial function, increased resting blood flow, and BA dilation, as well as higher grayscale entropy and GLDS-CON, indicating that lower extremity exercise is associated with salutary changes in upper-extremity arterial wall structure and function. ClinicalTrials.gov Identifier: NCT01408901.
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Affiliation(s)
- Jack Berroug
- 1 Department of Medicine, Division of Cardiovascular Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Claudia E Korcarz
- 1 Department of Medicine, Division of Cardiovascular Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Carol Kc Mitchell
- 1 Department of Medicine, Division of Cardiovascular Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - JoAnne M Weber
- 1 Department of Medicine, Division of Cardiovascular Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Lu Tian
- 2 Stanford University School of Medicine, Stanford, CA, USA
| | - Mary M McDermott
- 3 Departments of Medicine and Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - James H Stein
- 1 Department of Medicine, Division of Cardiovascular Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
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Zhang H, Du J, Wang H, Wang H, Jiang J, Zhao J, Lu H. Comparison of diagnostic values of ultrasound micro-flow imaging and contrast-enhanced ultrasound for neovascularization in carotid plaques. Exp Ther Med 2017; 14:680-688. [PMID: 28672985 PMCID: PMC5488622 DOI: 10.3892/etm.2017.4525] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 05/17/2017] [Indexed: 12/12/2022] Open
Abstract
The aim of the present study was to compare the diagnostic values of ultrasound micro-flow imaging (SMI) and contrast-enhanced ultrasound (CEUS) for neovascularization in carotid plaques, and to investigate their capacities for predicting the risks of cerebral stroke. A total of 39 patients (64 carotid plaques) with severe carotid artery stenosis undergoing carotid endarterectomy were selected between February 2015 and February 2016, and SMI and CEUS were used to detect neovascularization in plaques. According to the CEUS dynamic graph of plaques, the enhanced intensity visual scales and contrast parameters were obtained. Carotid atherosclerotic plaques were divided into 4 groups. The differences in the enhanced intensity visual scales, contrast parameters, and gray-scale median (GSM) values among the 4 groups were analyzed. Carotid plaque tissue samples from patients were stained for CD34, and the consistency of the methods for the diagnosis of neovascularization in plaques was analyzed. The differences in GSM values, enhanced intensities, and enhanced densities among the 4 groups of plaques were statistically significant (F=29.365, χ2=29.025, χ2=30.871, P<0.001); the differences in enhanced intensities of carotid atherosclerotic plaques with different echo types were statistically significant (χ2=17.951, P<0.001). The enhanced intensity of plaques was negatively correlated with the GSM value (r=−0.376, P<0.01), and the enhanced density of plaques was negatively correlated with the GSM value (r=−0.252, P<0.01). SMI and CEUS grading had good consistency (κ=0.860>0), there were statistically significant differences in new vessel densities with different SMI gradings (P<0.001), and the clinical symptoms and severity were positively correlated with SMI grading (rs=0.592>0). In conclusion, SMI and CEUS have good consistency for evaluating neovascularization in carotid plaques, and have good clinical value for evaluating neovascularization in carotid plaques.
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Affiliation(s)
- Hongxue Zhang
- Department of UItrasonic Diagnosis, The Second Clinic, Institute of the Chengde Medical College, Chengde, Hebei 067000, P.R. China
| | - Jianwen Du
- Department of UItrasonic Diagnosis, The Second Clinic, Institute of the Chengde Medical College, Chengde, Hebei 067000, P.R. China
| | - Hong Wang
- Department of UItrasonic Diagnosis, The Second Clinic, Institute of the Chengde Medical College, Chengde, Hebei 067000, P.R. China
| | - Haili Wang
- Department of UItrasonic Diagnosis, The Second Clinic, Institute of the Chengde Medical College, Chengde, Hebei 067000, P.R. China
| | - Jianhui Jiang
- Department of UItrasonic Diagnosis, The Second Clinic, Institute of the Chengde Medical College, Chengde, Hebei 067000, P.R. China
| | - Jingjie Zhao
- Department of Pathology, The Second Clinic, Institute of the Chengde Medical College, Chengde, Hebei 067000, P.R. China
| | - Huan Lu
- Department of UItrasonic Diagnosis, The Second Clinic, Institute of the Chengde Medical College, Chengde, Hebei 067000, P.R. China
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DNA methylation patterns associated with oxidative stress in an ageing population. BMC Med Genomics 2016; 9:72. [PMID: 27884142 PMCID: PMC5123374 DOI: 10.1186/s12920-016-0235-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 11/14/2016] [Indexed: 02/06/2023] Open
Abstract
Background Oxidative stress has been related to type 2 diabetes (T2D) and cardiovascular disease (CVD), the leading global cause of death. Contributions of environmental factors such as oxidative stress on complex traits and disease may be partly mediated through changes in epigenetic marks (e.g. DNA methylation). Studies relating differential methylation with intermediate phenotypes and disease endpoints may be useful in identifying additional candidate genes and mechanisms involved in disease. Methods To investigate the role of epigenetic variation in oxidative stress marker levels and subsequent development of CVD and T2D, we performed analyses of genome-wide DNA methylation in blood, ten markers of oxidative stress (total glutathione [TGSH], reduced glutathione [GSH], oxidised glutathione [GSSG], GSSG to GSH ratio, homocysteine [HCY], oxidised low-density lipoprotein (oxLDL), antibodies against oxLDL [OLAB], conjugated dienes [CD], baseline conjugated dienes [BCD]-LDL and total antioxidant capacity [TAOC]) and incident disease in up to 966 age-matched individuals. Results In total, we found 66 cytosine-guanine (CpG) sites associated with one or more oxidative stress markers (false discovery rate [FDR] <0.05). These sites were enriched in regulatory regions of the genome. Genes annotated to CpG sites showed enrichment in annotation clusters relating to phospho-metabolism and proteins with pleckstrin domains. We investigated the contribution of oxidative stress-associated CpGs to development of cardiometabolic disease. Methylation variation at CpGs in the 3'-UTR of HIST1H4D (cg08170869; histone cluster 1, H4d) and in the body of DVL1 (cg03465880; dishevelled-1) were associated with incident T2D events during 10 years of follow-up (all permutation p-values <0.01), indicating a role of epigenetic regulation in oxidative stress processes leading to development or progression of diabetes. Methylation QTL (meQTL) analysis showed significant associations with genetic sequence variants in cis at 28 (42%) of oxidative stress phenotype-associated sites (FDR < 0.05). Integrating cis-meQTLs with genotype-phenotype associations indicated that genetic effects on oxidative stress phenotype at one locus (cg07547695; BCL2L11) may be mediated through DNA methylation. Conclusions In conclusion, we report novel associations of DNA methylation with oxidative stress, some of which also show evidence of a relation with T2D incidence. Electronic supplementary material The online version of this article (doi:10.1186/s12920-016-0235-0) contains supplementary material, which is available to authorized users.
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Jung M, Parrinello CM, Xue X, Mack WJ, Anastos K, Lazar JM, Selzer RH, Shircore AM, Plankey M, Tien P, Cohen M, Gange SJ, Hodis HN, Kaplan RC. Echolucency of the carotid artery intima-media complex and intima-media thickness have different cardiovascular risk factor relationships: the Women's Interagency HIV Study. J Am Heart Assoc 2015; 4:jah3839. [PMID: 25699995 PMCID: PMC4345869 DOI: 10.1161/jaha.114.001405] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background Adults infected with HIV have increased atherosclerosis potentially associated with both HIV and non‐HIV associated factors. We characterized risk factors for atherosclerosis as measured by noninvasive vascular imaging. Methods and Results We used B‐mode ultrasound to examine levels and correlates of echogenicity and vessel wall thickness of the carotid artery intima‐media complex in 1282 HIV‐infected and 510 HIV‐uninfected women of the Women's Interagency HIV Study. Levels of gray scale median (GSM, a measure of echogenicity) did not vary between HIV infection groups. In both groups, smokers had increased GSM, whereas age, diabetes, elevated blood pressure, and high BMI were associated with lower (rather than higher) GSM. Each of these non‐lipid CVD risk factors, especially age and blood pressure, was also associated with higher levels of carotid artery intima‐media thickness (cIMT). Higher serum triglyceride levels were associated with lower GSM in both HIV‐infected and HIV‐uninfected groups. Additional lipid risk factors for low GSM including high LDL cholesterol and low HDL cholesterol levels were identified in HIV uninfected but not in HIV infected women. In contrast to findings for GSM, among the lipid parameters only LDL cholesterol level had an association with cIMT, which was observed only in the HIV uninfected group. Conclusions Lipid and non‐lipid risk factor associations with echolucency of the carotid artery and the thickness of the common carotid artery intima‐media layer suggest that these measures capture different aspects of atherosclerosis.
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Affiliation(s)
- Molly Jung
- Department of Epidemiology, Albert Einstein College of Medicine, Bronx, NY (M.J., X.X., K.A., R.C.K.)
| | - Christina M Parrinello
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (C.M.P., S.J.G.)
| | - Xiaonan Xue
- Department of Epidemiology, Albert Einstein College of Medicine, Bronx, NY (M.J., X.X., K.A., R.C.K.)
| | - Wendy J Mack
- Atherosclerosis Research Unit, Department of Medicine, University of Southern California, Los Angeles, CA (W.J.M., R.H.S., A.M.S., H.N.H.)
| | - Kathryn Anastos
- Department of Epidemiology, Albert Einstein College of Medicine, Bronx, NY (M.J., X.X., K.A., R.C.K.)
| | - Jason M Lazar
- Department of Medicine, Downstate Medical Center, State University of New York, Brooklyn, NY (J.M.L.)
| | - Robert H Selzer
- Atherosclerosis Research Unit, Department of Medicine, University of Southern California, Los Angeles, CA (W.J.M., R.H.S., A.M.S., H.N.H.)
| | - Anne M Shircore
- Atherosclerosis Research Unit, Department of Medicine, University of Southern California, Los Angeles, CA (W.J.M., R.H.S., A.M.S., H.N.H.)
| | - Michael Plankey
- Department of Medicine, Georgetown University Medical Center, Washington, DC (M.P.)
| | - Phyllis Tien
- Department of Medicine, University of California, San Francisco, CA (P.T.) San Francisco Veterans Affairs Medical Center, San Francisco, CA (P.T.)
| | - Mardge Cohen
- Department of Medicine, Stroger Hospital and Rush University, Chicago, IL (M.C.)
| | - Stephen J Gange
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (C.M.P., S.J.G.)
| | - Howard N Hodis
- Atherosclerosis Research Unit, Department of Medicine, University of Southern California, Los Angeles, CA (W.J.M., R.H.S., A.M.S., H.N.H.)
| | - Robert C Kaplan
- Department of Epidemiology, Albert Einstein College of Medicine, Bronx, NY (M.J., X.X., K.A., R.C.K.)
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10
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Jia T, Byberg L, Lindholm B, Larsson TE, Lind L, Michaëlsson K, Carrero JJ. Dietary acid load, kidney function, osteoporosis, and risk of fractures in elderly men and women. Osteoporos Int 2015; 26:563-70. [PMID: 25224295 DOI: 10.1007/s00198-014-2888-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 09/03/2014] [Indexed: 10/24/2022]
Abstract
SUMMARY Because kidney dysfunction reduces the ability to excrete dietary acid excess, we hypothesized that underlying kidney function may have confounded the mixed studies linking dietary acid load with the risk of osteoporosis and fractures in the community. In a relatively large survey of elderly men and women, we report that dietary acid load did neither associate with DEXA-estimated bone mineral density nor with fracture risk. Underlying kidney function did not modify these null findings. Our results do not support the dietary acid-base hypothesis of bone loss. INTRODUCTION Impaired renal function reduces the ability to excrete dietary acid excess. We here investigate the association between dietary acid load and bone mineral density (BMD), osteoporosis, and fracture risk by renal function status. METHODS An observational study was conducted in 861 community-dwelling 70-year-old men and women (49% men) with complete dietary data from the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS). The exposure was dietary acid load as estimated from 7-day food records by the net endogenous acid production (NEAP) and potential renal acid load (PRAL) algorithms. Renal function assessed by cystatin C estimated glomerular filtration rate was reduced in 21% of the individuals. Study outcomes were BMD and osteoporosis state (assessed by DEXA) and time to fracture (median follow-up of 9.2 years). RESULTS In cross-section, dietary acid load had no significant associations with BMD or with the diagnosis of osteoporosis. During follow-up, 131 fractures were validated. Neither NEAP (adjusted hazard ratios (HR) (95% confidence interval (CI)), 1.01 (0.85-1.21), per 1 SD increment) nor PRAL (adjusted HR (95% CI), 1.07 (0.88-1.30), per 1 SD increment) associated with fracture risk. Further multivariate adjustment for kidney function or stratification by the presence of kidney disease did not modify these null associations. CONCLUSIONS The hypothesis that dietary acid load associates with reduced BMD or increased fracture risk was not supported by this study in community-dwelling elderly individuals. Renal function did not influence on this null finding.
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Affiliation(s)
- T Jia
- Divisions of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
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11
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Galan-Chilet I, Tellez-Plaza M, Guallar E, De Marco G, Lopez-Izquierdo R, Gonzalez-Manzano I, Carmen Tormos M, Martin-Nuñez GM, Rojo-Martinez G, Saez GT, Martín-Escudero JC, Redon J, Javier Chaves F. Plasma selenium levels and oxidative stress biomarkers: a gene-environment interaction population-based study. Free Radic Biol Med 2014; 74:229-36. [PMID: 25017966 DOI: 10.1016/j.freeradbiomed.2014.07.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 06/25/2014] [Accepted: 07/03/2014] [Indexed: 12/21/2022]
Abstract
The role of selenium exposure in preventing chronic disease is controversial, especially in selenium-repleted populations. At high concentrations, selenium exposure may increase oxidative stress. Studies evaluating the interaction of genetic variation in genes involved in oxidative stress pathways and selenium are scarce. We evaluated the cross-sectional association of plasma selenium concentrations with oxidative stress levels, measured as oxidized to reduced glutathione ratio (GSSG/GSH), malondialdehyde (MDA), and 8-oxo-7,8-dihydroguanine (8-oxo-dG) in urine, and the interacting role of genetic variation in oxidative stress candidate genes, in a representative sample of 1445 men and women aged 18-85 years from Spain. The geometric mean of plasma selenium levels in the study sample was 84.76 µg/L. In fully adjusted models the geometric mean ratios for oxidative stress biomarker levels comparing the highest to the lowest quintiles of plasma selenium levels were 0.61 (0.50-0.76) for GSSG/GSH, 0.89 (0.79-1.00) for MDA, and 1.06 (0.96-1.18) for 8-oxo-dG. We observed nonlinear dose-responses of selenium exposure and oxidative stress biomarkers, with plasma selenium concentrations above ~110 μg/L being positively associated with 8-oxo-dG, but inversely associated with GSSG/GSH and MDA. In addition, we identified potential risk genotypes associated with increased levels of oxidative stress markers with high selenium levels. Our findings support that high selenium levels increase oxidative stress in some biological processes. More studies are needed to disentangle the complexity of selenium biology and the relevance of potential gene-selenium interactions in relation to health outcomes in human populations.
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Affiliation(s)
- Inmaculada Galan-Chilet
- Genotyping and Genetic Diagnosis Unit, Institute for Biomedical Research INCLIVA, Valencia, Spain
| | - Maria Tellez-Plaza
- Area of Cardiometabolic and Renal Risk, Institute for Biomedical Research INCLIVA, Valencia, Spain; Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA.
| | - Eliseo Guallar
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA; Department of Medicine, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Griselda De Marco
- Genotyping and Genetic Diagnosis Unit, Institute for Biomedical Research INCLIVA, Valencia, Spain
| | - Raul Lopez-Izquierdo
- Department of Internal Medicine, Hospital Universitario Rio Hortega, Valladolid, Spain
| | | | - M Carmen Tormos
- CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III, Minister of Health, Madrid, Spain
| | - Gracia M Martin-Nuñez
- Department of Endocrinology and Nutrition, Biomedical Research Institute of Malaga (IBIMA), Hospital Regional Universitario de Malaga, Malaga, Spain; CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Barcelona, Spain
| | - Gemma Rojo-Martinez
- Department of Endocrinology and Nutrition, Biomedical Research Institute of Malaga (IBIMA), Hospital Regional Universitario de Malaga, Malaga, Spain
| | - Guillermo T Saez
- CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III, Minister of Health, Madrid, Spain; Department of Biochemistry and Molecular Biology, School of Medicine, University of Valencia, Spain; Service of Clinical Analysis-CDBI; Hospital General Universitario de Valencia (HGUV) Valencia, Spain
| | | | - Josep Redon
- Area of Cardiometabolic and Renal Risk, Institute for Biomedical Research INCLIVA, Valencia, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III, Minister of Health, Madrid, Spain; Department of Internal Medicine, Hospital Clínico de Valencia, Valencia, Spain
| | - F Javier Chaves
- Genotyping and Genetic Diagnosis Unit, Institute for Biomedical Research INCLIVA, Valencia, Spain; CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Barcelona, Spain
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12
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Hafner F, Kieninger A, Meinitzer A, Gary T, Froehlich H, Haas E, Hackl G, Eller P, Brodmann M, Seinost G. Endothelial dysfunction and brachial intima-media thickness: long term cardiovascular risk with claudication related to peripheral arterial disease: a prospective analysis. PLoS One 2014; 9:e93357. [PMID: 24740106 PMCID: PMC3989175 DOI: 10.1371/journal.pone.0093357] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 03/04/2014] [Indexed: 01/14/2023] Open
Abstract
Objective Endothelial dysfunction plays a key role in the development, progression, and clinical manifestation of atherosclerosis, and in symptomatic peripheral arterial disease, endothelial dysfunction and enlarged intima-media thickness might be associated with increased cardiovascular risk. Flow-mediated dilatation and serologic parameters are used to evaluate individual endothelial function. Brachial intima-media thickness, a less recognized parameter of cardiovascular risk, is independently associated with coronary artery disease. The aim of this study was to evaluate the prognostic value of ultrasound and serologic parameters of endothelial function in relation to cardiovascular mortality in peripheral arterial disease. Design monocentric, prospective cohort study. Methods Flow mediated dilatation and brachial intima-media thickness were assessed in 184 (124 male) patients with peripheral arterial disease (Rutherford stages 2–3). Serologic parameters of endothelial function included asymmetric dimethylarginine (ADMA), symmetric dimethylarginine (SDMA), and L-homoarginine. Cardiovascular events were recorded during a follow-up of 99.1±11.1 months. Subjects who died of noncardiovascular causes were excluded from further analysis. Results Eighty-two patients (44.6%) died during follow-up after a mean duration of 49.7±28.3 months. There were 49 cardiovascular deaths (59.8%) and 33 other deaths (40.2%). Flow mediated dilatation was associated with cardiovascular death [1.17% (0.0, 4.3) vs. 4.1% (1.2, 6.4), p<0.001]. Intima-media thickness was greater in patients who succumbed to cardiovascular disease [0.37 mm (0.30, 0.41)] than in survivors [0.21 mm (0.15, 0.38), p<0.001]. Brachial intima-media thickness above 0.345 mm was most predictive of cardiovascular death, with sensitivity and specificity values of 0.714 and 0.657, respectively (p<0.001). Furthermore, ADMA levels above 0.745 µmol/l and SDMA levels above 0.825 µmol/l were significantly associated with cardiovascular death (p<0.001 and 0.030). Conclusion In symptomatic peripheral arterial disease, decreased flow mediated dilatation, enlarged intima-media thickness, and elevated levels of ADMA and SDMA were associated with increased cardiovascular risk.
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Affiliation(s)
- Franz Hafner
- Department of Internal Medicine, Division of Angiology, Medical University of Graz, Graz, Austria
| | - Andrea Kieninger
- Department of Internal Medicine, Division of Angiology, Medical University of Graz, Graz, Austria
| | - Andreas Meinitzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - Thomas Gary
- Department of Internal Medicine, Division of Angiology, Medical University of Graz, Graz, Austria
| | - Harald Froehlich
- Department of Internal Medicine, Division of Angiology, Medical University of Graz, Graz, Austria
| | - Elke Haas
- Department of Internal Medicine, Division of Angiology, Medical University of Graz, Graz, Austria
| | - Gerald Hackl
- Department of Internal Medicine, Division of Angiology, Medical University of Graz, Graz, Austria
| | - Philipp Eller
- Department of Internal Medicine, Division of Angiology, Medical University of Graz, Graz, Austria
| | - Marianne Brodmann
- Department of Internal Medicine, Division of Angiology, Medical University of Graz, Graz, Austria
- * E-mail:
| | - Gerald Seinost
- Department of Internal Medicine, Division of Angiology, Medical University of Graz, Graz, Austria
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Sarmento PLDFA, Plavnik FL, Scaciota A, Lima JO, Miranda RB, Ajzen SA. Relationship between cardiovascular risk factors and the echogenicity and pattern of the carotid intima-media complex in men. SAO PAULO MED J 2014; 132:97-104. [PMID: 24714990 PMCID: PMC10896581 DOI: 10.1590/1516-3180.2014.1322490] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 05/30/2013] [Accepted: 06/27/2013] [Indexed: 11/22/2022] Open
Abstract
CONTEXT AND OBJECTIVE The thickness of the carotid intima-media complex (C-IMC) is considered to be a marker of early atherosclerosis, but visual and echogenic changes to the C-IMC can also be noted. The objective here was to evaluate the relationship between cardiovascular risk factors and the echogenicity of the C-IMC and identify those most associated with an "abnormal" C-IMC. DESIGN AND SETTING Cross-sectional study in the ultrasound sector of the Department of Diagnostic Imaging, Universidade Federal de São Paulo. METHODS Eighty men were evaluated. Measurements of arterial blood pressure, waist circumference (WC), lipid profile, fasting glucose, uric acid and high-sensitivity C-reactive protein were obtained. The thickness of the C-IMC was measured by means of B-mode ultrasound, and the intima-media gray-scale mean (IM-GSM) and standard deviation (IM-SD) were calculated. RESULTS The following were discriminating variables: fasting glucose (r2 = 0.036; P = 0.013), uric acid (r2 = 0.08; P = 0.03), IM-SD (r2 = 0.43; P < 0.001), IM-GSM (r2 = 0.35; P < 0.001) and thickness of the C-IMC (r2 = 0.29; P < 0.001). IM-GSM showed significant correlations with WC (r = -0.22; P = 0.005), fasting glucose (r = -0.24; P = 0.002) and high-density lipoprotein cholesterol (HDL-C) (r = 0.27; P = 0.0007). CONCLUSION IM-GSM showed correlations with WC, fasting glucose and HDL-C. However, uric acid and IM-SD presented the greatest discriminating impact. These results suggest that visual changes in C-IMC may help identify patients with potential cardiovascular risk, independently of the thickness of the C-IMC.
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Affiliation(s)
| | - Frida Liane Plavnik
- MD, MSc, PhD. Affiliate Professor, Department of Nephrology, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
| | - Andrea Scaciota
- BSc. Computer Graphics Specialist, Coordinator of Teaching and Research Support for Residents and Postgraduate Students, Department of Diagnostic Imaging, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
| | - Joab Oliveira Lima
- MD, PhD. Adjunct Professor, Department of Statistics, Universidade Federal da Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Robson Barbosa Miranda
- MD. Assistant Professor, Department of Surgery, Faculdade de Medicina do ABC (FMABC), Santo André, São Paulo, Brazil
| | - Sergio Aron Ajzen
- MD, MSc, PhD. Titular Professor, Head of the Department of Diagnostic Imaging, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
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van den Munckhof I, Scholten R, Cable NT, Hopman MTE, Green DJ, Thijssen DHJ. Impact of age and sex on carotid and peripheral arterial wall thickness in humans. Acta Physiol (Oxf) 2012; 206:220-8. [PMID: 23088509 DOI: 10.1111/j.1748-1716.2012.02457.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 02/15/2012] [Accepted: 05/28/2012] [Indexed: 11/26/2022]
Abstract
BACKGROUND Although previous studies have reported age-related wall thickening in carotid arteries, it is not clear whether this is a systemic phenomenon which is also apparent in peripheral conduit arteries or whether conduit wall thickness (WT) changes occur to a similar degree in men and women. AIM To determine whether sex modifies the impact of ageing on WT or wall-to-lumen ratio (W:L) in atherosclerosis-prone (i.e. carotid artery, femoral, superficial femoral, popliteal artery) and atherosclerosis-resistant (i.e. brachial artery) conduit arteries. METHODS We included 30 young (23 ± 2 year; 15M : 15F) and 31 older (70 ± 5 year; 18M : 13F) healthy subjects. High-resolution ultrasound was used to measure diameter, WT and wall-to-lumen ratio (W/L) in all arteries. RESULTS Older subjects had increased WT and W/L in the carotid, femoral, superficial femoral, popliteal and brachial arteries (all P < 0.05). Compared with women, men demonstrated larger diameter and WT (both P < 0.01) across all arteries. Sex did not impact upon age-related changes in WT or W/L (P = 0.39 and 0.43 respectively). CONCLUSION Our data suggest that age-related wall thickening, evident in the carotid artery, is also apparent in the arteries of the upper and lower limbs. The impact of age on wall thickening did not differ between men and women. These data support the presence of systemic increases in WT and W/L with age in apparently healthy humans, independent of sex.
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Affiliation(s)
- I. van den Munckhof
- Department of Physiology; Radboud University Nijmegen Medical Centre; Nijmegen; the Netherlands
| | - R. Scholten
- Department of Physiology; Radboud University Nijmegen Medical Centre; Nijmegen; the Netherlands
| | - N. T. Cable
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University; Liverpool; UK
| | - M. T. E. Hopman
- Department of Physiology; Radboud University Nijmegen Medical Centre; Nijmegen; the Netherlands
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Lind L, Wohlin M, Andren B, Sundström J. The echogenicity of the intima-media complex in the common carotid artery is related to insulin resistance measured by the hyperinsulinemic clamp in elderly men. Clin Physiol Funct Imaging 2012; 33:137-42. [PMID: 23383692 DOI: 10.1111/cpf.12006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 09/18/2012] [Indexed: 11/28/2022]
Abstract
The echogenicity of the intima-media complex (IM-GSM) has recently been shown to be related to the echogenicity in carotid artery plaque and to predict cardiovascular (CV) mortality. The present study aims to evaluate the relationship between metabolic CV risk factors, with special emphasis on insulin resistance, and IM-GSM in the carotid artery. Carotid artery ultrasound with grey-scale median analysis of the intima-media complex, IM-GSM, was performed in a population sample of 480 men aged 75 years. In these subjects, a euglycemic hyperinsulinemic clamp to investigate insulin resistance was performed together with measurements of conventional CV risk factors at the age of 70. The metabolic syndrome (MetS) was defined by the NCEP/ATPIII-criteria. In univariate analysis, IM-GSM in the common carotid artery was inversely correlated with the intima-media thickness (IMT), body mass index (BMI), waist/hip ratio, fasting glucose, serum triglycerides, low HDL cholesterol and insulin resistance at the clamp (r = -0·24, P<0·001). In multiple regression analysis, only insulin resistance at the clamp and BMI were independently related to IM-GSM. Subjects with the MetS (22%) showed a reduced IM-GSM when compared to those without (64 ± 20 SD versus 68 ± 19, P<0·05). Because the echogenicity of the intima-media complex in the carotid artery is related to obesity and insulin resistance at clamp independently of IMT, this new vascular characteristic would serve as a marker of vascular alterations induced by insulin resistance and the MetS and has the advantage to be obtainable in almost all subjects.
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Affiliation(s)
- Lars Lind
- Department of Medicine, Uppsala University, Uppsala, Sweden.
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Xu S, Lind L, Zhao L, Lindahl B, Venge P. Plasma prolylcarboxypeptidase (angiotensinase C) is increased in obesity and diabetes mellitus and related to cardiovascular dysfunction. Clin Chem 2012; 58:1110-5. [PMID: 22539806 DOI: 10.1373/clinchem.2011.179291] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Prolylcarboxypeptidase (PRCP) (angiotensinase C) has 3 major targets, angiotensin II, prekallikrein, and α-melanocyte stimulating hormone(1-13). The truncation of the latter leads to loss in appetite regulation and obesity in experimental animals. The objectives of this study were to purify PRCP from a native source, establish a sensitive immunoassay for PRCP, and relate plasma PRCP concentrations to signs and symptoms of obesity, diabetes mellitus, and cardiovascular dysfunction. METHODS Purification of PRCP from human neutrophils and establishment of a sensitive ELISA was carried out with the use of samples from study participants. Three cohorts were studied: healthy individuals (n = 40); a chest pain cohort (Fast Assessment of Thoracic Pain by Neural Networks) (n = 165); and a community-based cohort [Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS)] (n = 1004). RESULTS PRCP was purified to homogeneity. Mean (SD) plasma concentrations in healthy individuals were 12.9 (3.2) μg/L and were increased in patients with chest pain and in patients with obesity and/or diabetes mellitus (P < 0.0001). In the PIVUS cohort the concentrations were related to several measures of arterial plaque formation, thickness of arterial intima media and posterior wall of the heart (P = 0.04-0.000005); the Framingham score (r = 0.14, P < 0.0001); and concentrations of C-reactive protein (r = 0.16, P < 0.0001) and N-terminal pro B-type natriuretic peptide (r = -0.13, P < 0.0001). CONCLUSIONS Plasma concentrations of PRCP may be used to reflect metabolic conditions in individuals with obesity and diabetes mellitus. The associations of PRCP concentrations with signs of cardiovascular dysfunction and cardiovascular abnormalities suggest a pivotal role of the enzyme in disease.
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Affiliation(s)
- Shengyuan Xu
- Section of Clinical Chemistry, Department of Medical Sciences, University of Uppsala, Uppsala, Sweden
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De Blois J, Stranden E, Jogestrand T, Henareh L, Agewall S. Echogenicity of the carotid intima-media complex and cardiovascular risk factors. Clin Physiol Funct Imaging 2012; 32:400-3. [PMID: 22856348 DOI: 10.1111/j.1475-097x.2012.01134.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Accepted: 03/13/2012] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Increased carotid intima-media thickness (IMT) has been associated with increased risk of myocardial infarction (MI) and stroke. A measure of echogenicity, the grey scale median (GSM), has been shown to be inversely correlated with cardiovascular risk factors and to be predictive of mortality in a community-based cohort. We assessed the factors associated with carotid IM-GSM in younger, non-diabetic patients with a recent MI. METHODS AND RESULTS A total of 122 patients (women, 25%) aged 31-80 years (61) were recruited 2-3 days after an acute MI. Ultrasound examinations of the carotid arteries were performed 1-12 months after the MI. IMT was 0·78 (SD 0·17) mm on the right side and 0·81 (0·20) mm on the left side (P = 0·05). GSM was 88·60 (range 46-132, SD 18·32) on the right side and 82·10 (40-126, 17·89) on the left side (P = 0·002). Triglycerides (TG) correlated with GSM on both sides (right, r = -0·27, P = 0·003; left, r = -0·18, P = 0·05). On the right side, GSM was 92·15 and 82·26 (P = 0·05) in patients with TG < and ≥1·7, and on the left side, it was 84·04 and 74·55 (P = 0·02) in patients with TG < and ≥2·3. On multivariate analysis, TG were significantly associated with GSM, both on the right side (P = 0·01) and on the left side (P = 0·009). CONCLUSION We found a negative association between TG and carotid IM-GSM on both sides in patients with a recent MI. Our results also suggest that atherosclerosis progression may be faster on the left side in patients with coronary heart disease.
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Abstract
Thickening of the carotid artery wall has been adopted as a surrogate marker of pre-clinical atherosclerosis, which is strongly related to increased cardiovascular risk. The cardioprotective effects of exercise training, including direct effects on vascular function and lumen dimension, have been consistently reported in asymptomatic subjects and those with cardiovascular risk factors and diseases. In the present review, we summarize evidence pertaining to the impact of exercise and physical activity on arterial wall remodelling of the carotid artery and peripheral arteries in the upper and lower limbs. We consider the potential role of exercise intensity, duration and modality in the context of putative mechanisms involved in wall remodelling, including haemodynamic forces. Finally, we discuss the impact of exercise training in terms of primary prevention of wall thickening in healthy subjects and remodelling of arteries in subjects with existing cardiovascular disease and risk factors.
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Carotid and brachial artery intima-media thickness is related to coronary atherosclerotic burden and may also represent high cardiovascular risk in patients with normal coronary angiograms. J Med Ultrason (2001) 2011; 38:187. [DOI: 10.1007/s10396-011-0319-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Accepted: 06/19/2011] [Indexed: 10/17/2022]
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Are flow-mediated vasodilatation and intima-media thickness of the brachial artery associated with restenosis after endovascular treatment of peripheral arterial occlusive disease? Eur Radiol 2010; 20:2533-40. [DOI: 10.1007/s00330-010-1801-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Revised: 02/25/2010] [Accepted: 03/20/2010] [Indexed: 11/28/2022]
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The effects of lifestyle modification on a new oxidized low-density lipoprotein marker, serum amyloid A-LDL, in subjects with primary lipid disorder. Clin Chim Acta 2009; 409:67-9. [DOI: 10.1016/j.cca.2009.08.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2009] [Revised: 08/22/2009] [Accepted: 08/24/2009] [Indexed: 11/22/2022]
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Lind L, Andersson J, Hansen T, Johansson L, Ahlström H. Atherosclerosis measured by whole body magnetic resonance angiography and carotid artery ultrasound is related to arterial compliance, but not to endothelium-dependent vasodilation - the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study. Clin Physiol Funct Imaging 2009; 29:321-9. [DOI: 10.1111/j.1475-097x.2009.00871.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Järhult SJ, Sundström J, Lind L. Brachial artery hyperemic blood flow velocities are related to carotid atherosclerosis. Clin Physiol Funct Imaging 2009; 29:360-5. [PMID: 19508277 DOI: 10.1111/j.1475-097x.2009.00879.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Cardiovascular (CV) risk relates to the blood flow velocity pattern in the brachial artery during hyperemia, especially to the hyperaemic systolic to diastolic mean blood flow velocity (SDFV) ratio. Here, we investigated the relations between SDFV in the brachial artery and different characteristics of carotid atherosclerosis. MATERIAL AND METHODS Data were collected from 1016 70-year-olds participating in the Prospective Investigation of Uppsala Seniors study. Doppler recordings of blood flow velocity during hyperemia were analysed in the brachial artery. In the carotid artery, intima-media thickness (IMT) was recorded together with an assessment of echogenicity by the Grey scale median (GSM) method in both overt plaques and in the intima-media complex (IM-GSM). RESULTS The SDFV ratio was related to the number of carotid arteries affected by plaque (P = 0.018) and inversely to plaque echogenicity (P = 0.0003). The SDFV ratio was also related to IMT (P = 0.0022) and inversely to IM-GSM (P = 0.0001). These relations were statistically significant also after adjusting for major CV risk factors, individually as well as summarised as the Framingham risk score. CONCLUSION Our results indicate that the hyperemic systolic to diastolic blood flow velocity ratio in the brachial artery is related to atherosclerosis in the carotid artery.
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Affiliation(s)
- Susann J Järhult
- Department of Medicine, Uppsala University Hospital, Uppsala 75185, Sweden.
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Wohlin M, Sundström J, Andrén B, Larsson A, Lind L. An echolucent carotid artery intima-media complex is a new and independent predictor of mortality in an elderly male cohort. Atherosclerosis 2009; 205:486-91. [PMID: 19243779 DOI: 10.1016/j.atherosclerosis.2009.01.032] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2008] [Revised: 01/22/2009] [Accepted: 01/22/2009] [Indexed: 11/18/2022]
Abstract
BACKGROUND The echogenicity of atherosclerotic plaques is a measure of their lipid content and predicts cardiovascular disease. We hypothesized that the echogenicity of the non-plaque-affected arterial wall may be prognostically important as well, and more easily used as not all subjects carry plaques. We investigated the prognostic value of intima-media (IM) echogenicity (measured as the grey scale median [GSM]) for mortality compared with intima-media thickness (IMT) in a population-based sample of elderly men. METHODS A cohort from a community-based sample of 491 men was investigated with carotid artery ultrasound at age 75. IMT and GSM for IM and plaques were measured in the far wall of the common carotid artery being apparently free of plaque. Cox proportional hazard analysis models were used to investigate linear and non-linear relations of IM-GSM to mortality, adjusted for IMT, body mass index, cholesterol, HDL-cholesterol, triglycerides, systolic blood pressure, antihypertensive treatment, CRP, diabetes, current smoking, pack years of smoking, and previous cardiovascular disease. RESULTS Seventy-seven subjects died during a median follow-up time of 5.1 years. Participants were divided in tertiles by IM-GSM. In unadjusted analysis, IM-GSM predicted mortality in a U-shaped manner. In Cox proportional hazard analyses, an echolucent IM-GSM was a predictor of all-cause mortality (HR: 3.23; CI: 1.60-6.54; p<0.05) and CVD mortality (n=30, HR: 8.29; CI: 2.03-33.92; p<0.05) independently of IMT and established risk factors. These associations were still significant following adjustment for plaque occurrence and plaque echogenicity. CONCLUSION An echolucent intima-media complex is a predictor of all-cause and CVD mortality in elderly men independently of plaque occurrence, plaque GSM, IMT and established risk factors, suggesting the echogenicity of the apparently plaque-free intima-media complex provides novel prognostic information regarding mortality after age 75.
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Affiliation(s)
- M Wohlin
- Department of Public Health and Caring Sciences, Uppsala University, Sweden
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Abstract
Increased oxidative stress is a characteristic of patients with high risk for atherosclerosis development (hypercholesterolemic, hypertensive, diabetic), and the above phenomenon was shown to be associated with attenuated antioxidative status. The increased oxidative stress in atherosclerotic patients is present in their blood, as well as in their arterial wall cells, including macrophages, the hallmark of foam cells formation during early atherogenesis. Serum high density lipoprotein (HDL)-associated paraoxonase 1 (PON1) reduces oxidative stress in lipoproteins, in macrophages, and in the atherosclerotic lesion, whereas paraoxonase 2 (PON2, which is present in tissues, but not in serum) acts as an antioxidant at the cellular and not humoral level. Both PON1 and PON2 protect against atherosclerosis development, and this phenomenon could be related to their antioxidative properties. The use of nutritional antioxidants such as vitamin E, carotenoids (lycopene and beta-carotene), and mainly polyphenols (such as those present in red wine, licorice root ethanolic extract, or in pomegranate) by atherosclerotic animals and also by cardiovascular patients, leads to a reduction in oxidative stress and to the attenuation of atherosclerosis development. These latter phenomena could be related to the nutritional antioxidants-induced increase in HDL PON1 activity (effects on gene expression, on preventing enzyme inactivation, and on increasing PON1 stability through its binding to HDL), as well as an increase in macrophage PON2 activation (at the gene expression level).
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Affiliation(s)
- Mira Rosenblat
- The Lipid Research Laboratory, Technion Faculty of Medicine, The Rappaport Family Institute for Research in the Medical Sciences, Rambam Medical Center, Haifa, Israel
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Michaëlsson K, Lind L, Frystyk J, Flyvbjerg A, Gedeborg R, Berne C, Zethelius B, Mallmin H, Söderberg S, Melhus H. Serum adiponectin in elderly men does not correlate with fracture risk. J Clin Endocrinol Metab 2008; 93:4041-7. [PMID: 18647807 DOI: 10.1210/jc.2008-0617] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Recent evidence suggests that adiponectin may play a role in bone metabolism, but studies of the correlation between serum adiponectin and bone mineral density (BMD) have given conflicting results, and the impact on fracture risk is unknown. OBJECTIVE Our objective was to investigate the association between serum adiponectin levels and BMD and fracture risk. DESIGN, SETTING, PARTICIPANTS, MAIN OUTCOME MEASURES: We used regression analyses to estimate the relationship between adiponectin and BMD in the Prospective Investigation of the Vasculature in Uppsala Seniors cohort of 441 men and 457 women aged 70 yr. The association was thereafter analyzed in the Uppsala Longitudinal Study of Adult Men (ULSAM), in which adiponectin was analyzed at age 70 yr and BMD at 82 yr in 507 men. Fractures in the ULSAM were documented in 314 men during 15 yr follow-up. Cox regression analysis was used to determine the risk of fracture according to serum adiponectin levels. RESULTS In multivariable analysis a negative association between adiponectin and BMD was found in both cohorts. When individuals in the highest quintile of adiponectin were compared with those in the lowest quintile, adjusted BMD was 9.7% lower at the lumbar spine, 7.1% lower at the proximal femur, and 5.2% lower for total body in the Prospective Investigation of the Vasculature in Uppsala Seniors (P < 0.001 for all three), and 8.1, 5.1, and 4.1% (P < 0.003 for all three), respectively, in the ULSAM. However, the hazard ratio for fracture per 1 sd of serum adiponectin was 0.99 (95% confidence interval 0.89-1.11). CONCLUSION Although adiponectin was a negative determinant of BMD in two independent cohorts, it was not associated with fracture risk in men.
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Affiliation(s)
- Karl Michaëlsson
- Department of Medical Sciences, University Hospital, Uppsala, Sweden
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