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Riccio A, Cefalo CMA, Mazzanti C, Vero L, Fiorentino TV, Massimino M, Monea G, Succurro E, Perticone M, Sciacqua A, Andreozzi F, Sesti G. Whole blood viscosity is associated with reduced myocardial mechano-energetic efficiency in nondiabetic individuals. Eur J Clin Invest 2024; 54:e14127. [PMID: 37950492 DOI: 10.1111/eci.14127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/25/2023] [Accepted: 10/31/2023] [Indexed: 11/12/2023]
Abstract
INTRODUCTION This cross-sectional study aimed to investigate the association between myocardial mechano-energetic efficiency (MEE) and whole blood viscosity (WBV) in nondiabetic adults participating in the CATAnzaro MEtabolic RIsk factors (CATAMERI) study. METHODS 1143 participants underwent an oral glucose tolerance test and an echocardiogram for myocardial MEE per gram of left ventricular mass (MEEi) measurement. WBV was measured as: [0.12 × h] + [0.17 × (p-2.07)], where h is haematocrit and p is plasma protein levels. RESULTS Study population includes 595 males and 548 females with a mean age of 46 ± 12 years and a mean BMI of 30.0 ± 6.2 kg/m2 . Individuals with normal glucose tolerance were 63%, while those with impaired fasting glucose, impaired glucose tolerance and or the combination of both were 14.3%, 13% and 9.7%, respectively. A univariate analysis showed that MEEi was significantly associated with sex, age, smoking, BMI, waist circumference, total cholesterol, HDL, triglycerides, fasting glucose, fasting insulin, HOMA-IR index, glucose tolerance, C-reactive protein, haematocrit, haemoglobin, plasma protein and WBV. In a multivariable regression model including variables that were significantly associated with MEEi in univariate analysis, MEEi was associated with HOMA-IR (β = -0.144, p < .001), age (β = -0.140, p < .001), WBV (β = -0.129, p < .001) and glucose tolerance (β = -0.064, p = .04). The independent association between WBV and MEEi remained statistically significant (β = -0.122, p < .001) when antihypertensive therapy and lipid-lowering therapy were included in the model. CONCLUSION WBV is associated with decreased myocardial MEE independently of other cardiovascular risk factors.
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Affiliation(s)
- Alessia Riccio
- Department of Clinical and Molecular Medicine, University of Rome-Sapienza, Rome, Italy
| | - Chiara M A Cefalo
- Department of Clinical and Molecular Medicine, University of Rome-Sapienza, Rome, Italy
| | - Camilla Mazzanti
- Department of Clinical and Molecular Medicine, University of Rome-Sapienza, Rome, Italy
| | - Laura Vero
- Department of Clinical and Molecular Medicine, University of Rome-Sapienza, Rome, Italy
| | - Teresa Vanessa Fiorentino
- Department of Medical and Surgical Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Mattia Massimino
- Department of Medical and Surgical Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Giuseppe Monea
- Department of Medical and Surgical Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Elena Succurro
- Department of Medical and Surgical Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Maria Perticone
- Department of Medical and Surgical Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Angela Sciacqua
- Department of Medical and Surgical Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Francesco Andreozzi
- Department of Medical and Surgical Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Giorgio Sesti
- Department of Clinical and Molecular Medicine, University of Rome-Sapienza, Rome, Italy
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Ahmed H, Podder C. Hemodynamical behavior analysis of anemic, diabetic, and healthy blood flow in the carotid artery. Heliyon 2024; 10:e26622. [PMID: 38420368 PMCID: PMC10900792 DOI: 10.1016/j.heliyon.2024.e26622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 02/12/2024] [Accepted: 02/16/2024] [Indexed: 03/02/2024] Open
Abstract
The influence of blood rheology on hemodynamic parameters is investigated using Computational Fluid Dynamics on blood flow through the human carotid artery. We performed three-dimensional modeling and simulation to study blood flow through the carotid artery, which is divided into internal and exterior parts with a decreased radius. The blood flow was classified as basic pulsatile to simulate the human heart's rhythmic pulses. For hemodynamic modeling viscosity of the fluid, the Carreau model was utilized with four distinct blood instances: Anemic, diabetic, and two healthy blood types. The boundary conditions with Carreau viscosity were applied using the Ansys Fluent simulator, and the governing equations were solved using the finite volume technique. Different time steps were tested for their impact on wall deformation, strain rate, blood velocity, pressure, wall shear, and skin friction coefficient. The hemodynamical parameters were calculated using many cross-sectional planes along the artery. Finally, the impact of the four types of blood cases listed above was investigated, and we discovered that each blood case has a substantial impact on blood velocity, pressure, wall shear, and strain rate along the artery.
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Affiliation(s)
- Hashnayne Ahmed
- Department of Mathematics, Faculty of Science & Engineering, University of Barishal, Barishal, 8200, Bangladesh
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Chinmayee Podder
- Department of Mathematics, Faculty of Science & Engineering, University of Barishal, Barishal, 8200, Bangladesh
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Wi M, Kim Y, Kim CH, Lee S, Bae GS, Leem J, Chu H. Effectiveness and Safety of Fufang Danshen Dripping Pill (Cardiotonic Pill) on Blood Viscosity and Hemorheological Factors for Cardiovascular Event Prevention in Patients with Type 2 Diabetes Mellitus: Systematic Review and Meta-Analysis. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1730. [PMID: 37893448 PMCID: PMC10608055 DOI: 10.3390/medicina59101730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/19/2023] [Accepted: 09/26/2023] [Indexed: 10/29/2023]
Abstract
Background and Objectives: Diabetes can cause various vascular complications. The Compounded Danshen-Dripping-Pill (CDDP) is widely used in China. This study aimed to analyze the effectiveness and safety of CDDP in the blood viscosity (BV) with type 2 diabetes mellitus (T2DM). Materials and Methods: We conducted a systematic search of seven databases from their inception to July 2022 for randomized controlled trials that used CDDP to treat T2DM. To evaluate BV, we measured low shear rate (LSR), high shear rate (HSR), and plasma viscosity (PV). Homocysteine and adiponectin levels were also assessed as factors that could affect BV. Results: We included 18 studies and 1532 patients with T2DM. Meta-analysis revealed that CDDP significantly reduced LSR (mean difference [MD] -2.74, 95% confidence interval [CI] -3.77 to -1.72), HSR (MD -0.86, 95% CI -1.08 to -0.63), and PV (MD -0.37, 95% CI -0.54 to -0.19) compared to controls. CDDP also reduced homocysteine (MD -8.32, 95% CI -9.05 to -7.58), and increased plasma adiponectin (MD 2.72, 95% CI 2.13 to 3.32). Adverse events were reported less frequently in the treatment groups than in controls. Conclusions: CDDP is effective in reducing BV on T2DM. However, due to the poor design and quality of the included studies, high-quality, well-designed studies are required in the future.
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Affiliation(s)
- Minji Wi
- College of Korean Medicine, Wonkwang University, Iksandaero 460, Iksan 54538, Jeollabuk-do, Republic of Korea; (M.W.); (Y.K.)
| | - Yumin Kim
- College of Korean Medicine, Wonkwang University, Iksandaero 460, Iksan 54538, Jeollabuk-do, Republic of Korea; (M.W.); (Y.K.)
| | - Cheol-Hyun Kim
- Department of Internal Medicine and Neuroscience, College of Korean Medicine, Wonkwang University, Iksandaero 460, Iksan 54538, Jeollabuk-do, Republic of Korea; (C.-H.K.); (S.L.)
| | - Sangkwan Lee
- Department of Internal Medicine and Neuroscience, College of Korean Medicine, Wonkwang University, Iksandaero 460, Iksan 54538, Jeollabuk-do, Republic of Korea; (C.-H.K.); (S.L.)
| | - Gi-Sang Bae
- Department of Pharmacology, School of Korean Medicine, Wonkwang University, Iksandaero 460, Iksan 54538, Jeollabuk-do, Republic of Korea;
- Hanbang Cardio-Renal Syndrome Research Center, School of Korean Medicine, Wonkwang University, Iksandaero 460, Iksan 54538, Jeollabuk-do, Republic of Korea
| | - Jungtae Leem
- College of Korean Medicine, Wonkwang University, Iksandaero 460, Iksan 54538, Jeollabuk-do, Republic of Korea; (M.W.); (Y.K.)
- Korean Traditional Medicine Institute, Wonkwang University, Iksandaero 460, Iksan 54538, Jeollabuk-do, Republic of Korea
- Research Center of Traditional Korean Medicine, College of Korean Medicine, Wonkwang University, Iksandaero 460, Sin-dong, Iksan 54538, Jeollabuk-do, Republic of Korea
| | - Hongmin Chu
- Department of Internal Medicine and Neuroscience, College of Korean Medicine, Wonkwang University, Iksandaero 460, Iksan 54538, Jeollabuk-do, Republic of Korea; (C.-H.K.); (S.L.)
- Wollong Public Health Subcenter, Paju Public Health Center, Paju 10924, Gyeonggi-do, Republic of Korea
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Zhang B, Shi L, Ma X, Yang D, Sun H, Tang Y, Zhang X. "One stone, two birds": a mitochondria-targeted fluorescent probe for the detection of viscosity and HSO 3- in living cells. Analyst 2023; 148:3798-3805. [PMID: 37462402 DOI: 10.1039/d3an00905j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
The material transport and physiological events of mitochondria need to be supported by a suitable microenvironment. For example, high viscosity will seriously hinder material exchange, and SO2, as the precursor of HSO3-, is an endogenous signal molecule that plays a key role in information transmission. It is very important to detect viscosity and HSO3- in mitochondria. Here, we developed a dual-responsive fluorescent probe (named Hcy-NT) to image the changes in mitochondrial viscosity and HSO3- in a "killing two birds with one stone" manner. Hcy-NT showed an OFF-ON fluorescence signal for the increase in cell viscosity induced by nystatin, while an ON-OFF fluorescence signal for intracellular and endogenous HSO3-. Its limits of detection for HSO3- were calculated by both absorption and fluorescence methods, which were 1.200 and 1.291 μM, respectively. This work provides a valuable tool for the study of viscosity and HSO3- related physiological processes and the diagnosis of potential diseases.
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Affiliation(s)
- Buyue Zhang
- Hebei Key Laboratory of Medical-Industrial Integration Precision Medicine, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, China.
| | - Lei Shi
- Hebei Key Laboratory of Medical-Industrial Integration Precision Medicine, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, China.
| | - Xiaoying Ma
- Hebei Key Laboratory of Medical-Industrial Integration Precision Medicine, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, China.
| | - Dawei Yang
- National Laboratory for Molecular Sciences, Center for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hongxia Sun
- National Laboratory for Molecular Sciences, Center for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yalin Tang
- National Laboratory for Molecular Sciences, Center for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiufeng Zhang
- Hebei Key Laboratory of Medical-Industrial Integration Precision Medicine, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, China.
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Masaki N, Adachi T, Tomiyama H, Kohro T, Suzuki T, Ishizu T, Ueda S, Yamazaki T, Furumoto T, Kario K, Inoue T, Koba S, Takemoto Y, Hano T, Sata M, Ishibashi Y, Node K, Maemura K, Ohya Y, Furukawa T, Ito H, Higashi Y, Yamashina A, Takase B. Reduced reactive hyperemia of the brachial artery in diabetic patients assessed by repeated measurements: The FMD-J B study. Physiol Rep 2023; 11:e15786. [PMID: 37607768 PMCID: PMC10444575 DOI: 10.14814/phy2.15786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 07/23/2023] [Indexed: 08/24/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a major cause of microvascular dysfunction. However, its effect on blood flow patterns during ischemic demand has not been adequately elucidated. In this study, we investigated the hypothesis that microvascular dysfunction in patients with T2DM manifests as brachial reactive hyperemia (BRH), defined as the ratio of peak blood flow velocities in a brachial artery before and after forearm cuff occlusion. The study enrolled 943 subjects (men, n = 152 [T2DM] and n = 371 [non-T2DM]; women, n = 107 [T2DM] and n = 313 [non-T2DM], respectively) with no history of cardiovascular disease. Semiautomatic measurements were obtained three times at 1.5-year intervals to confirm the reproducibility of factors involved in BRH for each sex. An age-adjusted mixed model demonstrated attenuated BRH in the presence of T2DM in both men (p = 0.022) and women (p = 0.031) throughout the study period. Post hoc analysis showed that the estimated BRH was significantly attenuated in patients with T2DM regardless of sex, except at baseline in women. In multivariate regression analysis, T2DM was a negative predictor of BRH at every measurement in men. For women, BRH was more strongly associated with alcohol consumption. Repeated measurements analysis revealed that T2DM was associated with attenuated postocclusion reactive hyperemia.
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Affiliation(s)
- Nobuyuki Masaki
- Department of Intensive Care MedicineNational Defense Medical CollegeTokorozawaJapan
| | - Takeshi Adachi
- Department of CardiologyNational Defense Medical CollegeTokorozawaJapan
| | | | - Takahide Kohro
- Department of Hospital Planning and Management, Medical InformaticsJichi Medical University School of MedicineTochigiJapan
| | - Toru Suzuki
- Cardiovascular MedicineUniversity of LeicesterLeicesterUK
| | - Tomoko Ishizu
- Cardiovascular DivisionInstitute of Clinical Medicine, University of TsukubaIbarakiJapan
| | - Shinichiro Ueda
- Department of Clinical Pharmacology and TherapeuticsUniversity of the Ryukyu School of MedicineOkinawaJapan
| | - Tsutomu Yamazaki
- Department of Clinical Epidemiology and Systems, Faculty of MedicineThe University of TokyoTokyoJapan
| | - Tomoo Furumoto
- Department of Cardiovascular MedicineHokkaido University Graduate School of MedicineSapporoJapan
| | - Kazuomi Kario
- Division of Cardiovascular MedicineJichi Medical University School of MedicineTochigiJapan
| | - Teruo Inoue
- Dokkyo Medical University; Nasu Red Cross HospitalTochigiJapan
| | - Shinji Koba
- Department of Medicine, Division of CardiologyShowa University School of MedicineTokyoJapan
| | - Yasuhiko Takemoto
- Department of Internal Medicine and CardiologyOsaka City University Graduate School of MedicineOsakaJapan
| | - Takuzo Hano
- Department of Medical Education and Population‐based Medicine, Postgraduate School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Masataka Sata
- Department of Cardiovascular MedicineInstitute of Health Biosciences, The University of Tokushima Graduate SchoolTokushimaJapan
| | - Yutaka Ishibashi
- Department of General MedicineShimane University Faculty of MedicineShimaneJapan
| | - Koichi Node
- Department of Cardiovascular MedicineSaga UniversitySagaJapan
| | - Koji Maemura
- Department of Cardiovascular Medicine, Course of Medical and Dental Sciences, Graduate School of Biomedical SciencesNagasaki UniversityNagasakiJapan
| | - Yusuke Ohya
- The Third Department of Internal MedicineUniversity of the RyukyusOkinawaJapan
| | - Taiji Furukawa
- Department of Internal MedicineTeikyo University School of MedicineTokyoJapan
| | - Hiroshi Ito
- Department of Cardiovascular MedicineOkayama University Graduate School of Medicine, Dentistry, and Pharmaceutical SciencesOkayamaJapan
| | - Yukihito Higashi
- Department of Regenerative MedicineResearch Institute for Radiation Biology and Medicine, Hiroshima UniversityHiroshimaJapan
| | | | - Bonpei Takase
- Department of Intensive Care MedicineNational Defense Medical CollegeTokorozawaJapan
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Zhao Y, Jia H, Hua X, An T, Song J. Cardio-oncology: Shared Genetic, Metabolic, and Pharmacologic Mechanism. Curr Cardiol Rep 2023; 25:863-878. [PMID: 37493874 PMCID: PMC10403418 DOI: 10.1007/s11886-023-01906-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/11/2023] [Indexed: 07/27/2023]
Abstract
PURPOSE OF REVIEW The article aims to investigate the complex relationship between cancer and cardiovascular disease (CVD), with a focus on the effects of cancer treatment on cardiac health. RECENT FINDINGS Advances in cancer treatment have improved long-term survival rates, but CVD has emerged as a leading cause of morbidity and mortality in cancer patients. The interplay between cancer itself, treatment methods, homeostatic changes, and lifestyle modifications contributes to this comorbidity. Recent research in the field of cardio-oncology has revealed common genetic mutations, risk factors, and metabolic features associated with the co-occurrence of cancer and CVD. This article provides a comprehensive review of the latest research in cardio-oncology, including common genetic mutations, risk factors, and metabolic features, and explores the interactions between cancer treatment and CVD drugs, proposing novel approaches for the management of cancer and CVD.
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Affiliation(s)
- Yiqi Zhao
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, National Centre for Cardiovascular Disease, Department of Cardiac Surgery, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Cardiac Surgery, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Science, PUMC, 167 Beilishi Road, Xicheng District, 100037 Beijing, China
| | - Hao Jia
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, National Centre for Cardiovascular Disease, Department of Cardiac Surgery, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Cardiac Surgery, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Science, PUMC, 167 Beilishi Road, Xicheng District, 100037 Beijing, China
| | - Xiumeng Hua
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, National Centre for Cardiovascular Disease, Department of Cardiac Surgery, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Cardiac Surgery, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Science, PUMC, 167 Beilishi Road, Xicheng District, 100037 Beijing, China
| | - Tao An
- Department of Cardiology, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiangping Song
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, National Centre for Cardiovascular Disease, Department of Cardiac Surgery, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Cardiac Surgery, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Science, PUMC, 167 Beilishi Road, Xicheng District, 100037 Beijing, China
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Zhao F, Tomita M, Dutta A. Operational Modal Analysis of Near-Infrared Spectroscopy Measure of 2-Month Exercise Intervention Effects in Sedentary Older Adults with Diabetes and Cognitive Impairment. Brain Sci 2023; 13:1099. [PMID: 37509027 PMCID: PMC10377417 DOI: 10.3390/brainsci13071099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/11/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
The Global Burden of Disease Study (GBD 2019 Diseases and Injuries Collaborators) found that diabetes significantly increases the overall burden of disease, leading to a 24.4% increase in disability-adjusted life years. Persistently high glucose levels in diabetes can cause structural and functional changes in proteins throughout the body, and the accumulation of protein aggregates in the brain that can be associated with the progression of Alzheimer's Disease (AD). To address this burden in type 2 diabetes mellitus (T2DM), a combined aerobic and resistance exercise program was developed based on the recommendations of the American College of Sports Medicine. The prospectively registered clinical trials (NCT04626453, NCT04812288) involved two groups: an Intervention group of older sedentary adults with T2DM and a Control group of healthy older adults who could be either active or sedentary. The completion rate for the 2-month exercise program was high, with participants completing on an average of 89.14% of the exercise sessions. This indicated that the program was practical, feasible, and well tolerated, even during the COVID-19 pandemic. It was also safe, requiring minimal equipment and no supervision. Our paper presents portable near-infrared spectroscopy (NIRS) based measures that showed muscle oxygen saturation (SmO2), i.e., the balance between oxygen delivery and oxygen consumption in muscle, drop during bilateral heel rise task (BHR) and the 6 min walk task (6MWT) significantly (p < 0.05) changed at the post-intervention follow-up from the pre-intervention baseline in the T2DM Intervention group participants. Moreover, post-intervention changes from pre-intervention baseline for the prefrontal activation (both oxyhemoglobin and deoxyhemoglobin) showed statistically significant (p < 0.05, q < 0.05) effect at the right superior frontal gyrus, dorsolateral, during the Mini-Cog task. Here, operational modal analysis provided further insights into the 2-month exercise intervention effects on the very-low-frequency oscillations (<0.05 Hz) during the Mini-Cog task that improved post-intervention in the sedentary T2DM Intervention group from their pre-intervention baseline when compared to active healthy Control group. Then, the 6MWT distance significantly (p < 0.01) improved in the T2DM Intervention group at post-intervention follow-up from pre-intervention baseline that showed improved aerobic capacity and endurance. Our portable NIRS based measures have practical implications at the point of care for the therapists as they can monitor muscle and brain oxygenation changes during physical and cognitive tests to prescribe personalized physical exercise doses without triggering individual stress response, thereby, enhancing vascular health in T2DM.
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Affiliation(s)
- Fei Zhao
- Department of Rehabilitation Science, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY 14214, USA
| | - Machiko Tomita
- Department of Rehabilitation Science, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY 14214, USA
| | - Anirban Dutta
- School of Engineering, University of Lincoln, Lincoln LN67TS, UK
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Han K, Ma S, Sun J, Xu M, Qi X, Wang S, Li L, Li X. In silico modeling of patient-specific blood rheology in type 2 diabetes mellitus. Biophys J 2023; 122:1445-1458. [PMID: 36905122 PMCID: PMC10147843 DOI: 10.1016/j.bpj.2023.03.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 11/16/2022] [Accepted: 03/06/2023] [Indexed: 03/11/2023] Open
Abstract
Increased blood viscosity in type 2 diabetes mellitus (T2DM) is a risk factor for the development of insulin resistance and diabetes-related vascular complications; however, individuals with T2DM exhibit heterogeneous hemorheological properties, including cell deformation and aggregation. Using a multiscale red blood cell (RBC) model with key parameters derived from patient-specific data, we present a computational study of the rheological properties of blood from individual patients with T2DM. Specifically, one key model parameter, which determines the shear stiffness of the RBC membrane (μ) is informed by the high-shear-rate blood viscosity of patients with T2DM. At the same time, the other, which contributes to the strength of the RBC aggregation interaction (D0), is derived from the low-shear-rate blood viscosity of patients with T2DM. The T2DM RBC suspensions are simulated at different shear rates, and the predicted blood viscosity is compared with clinical laboratory-measured data. The results show that the blood viscosity obtained from clinical laboratories and computational simulations are in agreement at both low and high shear rates. These quantitative simulation results demonstrate that the patient-specific model has truly learned the rheological behavior of T2DM blood by unifying the mechanical and aggregation factors of the RBCs, which provides an effective way to extract quantitative predictions of the rheological properties of the blood of individual patients with T2DM.
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Affiliation(s)
- Keqin Han
- State Key Laboratory of Fluid Power and Mechatronic Systems, Department of Engineering Mechanics, and Center for X-Mechanics, Zhejiang University, Hangzhou, China
| | - Shuhao Ma
- State Key Laboratory of Fluid Power and Mechatronic Systems, Department of Engineering Mechanics, and Center for X-Mechanics, Zhejiang University, Hangzhou, China
| | - Jiehui Sun
- Department of Endocrinology and Metabolism, Ningbo First Hospital, Ningbo, China
| | - Miao Xu
- Department of Endocrinology and Metabolism, Ningbo First Hospital, Ningbo, China
| | - Xiaojing Qi
- State Key Laboratory of Fluid Power and Mechatronic Systems, Department of Engineering Mechanics, and Center for X-Mechanics, Zhejiang University, Hangzhou, China
| | - Shuo Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, Department of Engineering Mechanics, and Center for X-Mechanics, Zhejiang University, Hangzhou, China
| | - Li Li
- Department of Endocrinology and Metabolism, Ningbo First Hospital, Ningbo, China.
| | - Xuejin Li
- State Key Laboratory of Fluid Power and Mechatronic Systems, Department of Engineering Mechanics, and Center for X-Mechanics, Zhejiang University, Hangzhou, China; The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China.
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Chkhitauri L, Sanikidze T, Giorgadze E, Asatiani K, Kipiani N, Momtselidze N, Mantskava M. Comprehensive study of the rheological status and intensity of oxidative stress during the progression of type 2 diabetes mellitus to prevent its complications. Clin Hemorheol Microcirc 2022; 83:69-79. [PMID: 36120773 DOI: 10.3233/ch-221512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Prevention of Type 2 diabetes mellitus (T2DM) requires a modifying effect on the pathological processes inducing the β-cell dysfunction. OBJECTIVES the comprehensive study of the violation of rheological parameters in patients with different stages of diabetes and identification of possible links between these alterations with the intensity of the oxidative stress in the patient's body. METHODS 60 patients with IR, prediabetes, T2DM and healthy volunteers were included. Full range of the rheological parameters of the patients' blood - the indicators of erythrocytes aggregation index (EAI), the relative deformability of the erythrocytes membranes (ERDI), blood plasma viscosity (BPV), and oxidative stress intensity (OSI) were examined. RESULTS In patients with insulin resistance (IR), prediabetes, and T2DM the ERDI was statistically significantly lower and BPV - higher compared to control; a significant increase in EAI was detected in the patient group with prediabetes and T2DM compared to the control. CONCLUSION The level of rheological disorders in patients increases with the increase of the level of carbohydrate metabolism disorders and intensity of oxidative stress and reaches a maximum during manifested diabetes. Diagnosis of hemorheological disorders and OSI in T2DM can serve as an early marker of target organ damage possibility.
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Affiliation(s)
- Lela Chkhitauri
- Ivane Javakhishvili Tbilisi State University, Tbilisi, Georgia
| | - Tamar Sanikidze
- Tbilisi State Medical University, Tbilisi, Georgia.,Ivane Beritashvili Experimental Center of Biomedicine, Tbilisi, Georgia
| | - Elene Giorgadze
- Ivane Javakhishvili Tbilisi State University, Tbilisi, Georgia
| | | | - Nana Kipiani
- Tbilisi State Medical University, Tbilisi, Georgia
| | - Nana Momtselidze
- Ivane Beritashvili Experimental Center of Biomedicine, Tbilisi, Georgia.,Multidisciplinary Science High School, Tbilisi, Georgia.,UNIK-Kutaisi University, Kutaisi, Georgia
| | - Maka Mantskava
- Tbilisi State Medical University, Tbilisi, Georgia.,Ivane Beritashvili Experimental Center of Biomedicine, Tbilisi, Georgia.,Multidisciplinary Science High School, Tbilisi, Georgia.,European University, Tbilisi, Georgia
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10
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Yang L, Chen Q, Wan Y, Gan S, Li S, Lee CS, Jiang Y, Zhang H, Sun H. A NIR molecular rotor photosensitizer for efficient PDT and synchronous mitochondrial viscosity imaging. Chem Commun (Camb) 2022; 58:9425-9428. [PMID: 35916476 DOI: 10.1039/d2cc03592h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, two mitochondria-targeting photosensitizers (PSs, CCVJ-Mito-1 and CCVJ-Mito-2) that exhibit a turn-on fluorescence response towards increasing viscosity are reported. Notably, CCVJ-Mito-2 exhibits absorption in the near-infrared (NIR) region, and can be employed as a NIR PS targeting mitochondria and a fluorescent probe for tracking mitochondrial viscosity changes during photodynamic therapy (PDT). This dual functional PS can help to shed light on the dynamic changes of the cellular microenvironment during PDT and further guide the PDT process.
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Affiliation(s)
- Liu Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, P. R. China. .,Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China.
| | - Qingxin Chen
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China. .,Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen, 518057, P. R. China
| | - Yingpeng Wan
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China.
| | - Shenglong Gan
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China. .,Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen, 518057, P. R. China
| | - Shengliang Li
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China.
| | - Chun-Sing Lee
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China.
| | - Yin Jiang
- School of Chemical Engineering and Light Industry and School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, 510006, China.
| | - Huatang Zhang
- School of Chemical Engineering and Light Industry and School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, 510006, China.
| | - Hongyan Sun
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China. .,Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen, 518057, P. R. China
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11
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Zhao F, Tomita MR, Dutta A. Functional near-infrared spectroscopy of prefrontal cortex during memory encoding and recall in elderly with type 2 diabetes mellitus. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2022; 2022:3323-3326. [PMID: 36086207 DOI: 10.1109/embc48229.2022.9871983] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Low-frequency Fahræus-Lindqvist-driven oscillations in the small vessels are crucial because oscillations in small vessels support nutrient supply. Understanding of this is critical in type 2 diabetes mellitus (T2DM) to develop therapeutic measures in order to prevent Alzheimer's Disease Related Dementias. Indeed, vascular factors are known to contribute to cerebrovascular disease as well as mild cognitive impairment and dementia, which are predicted to affect 152 million people by 2050 (Alzheimer's Disease International London, UK, 2019). In this clinical study, we performed functional near-infrared spectroscopy (fNIRS) of the forehead to investigate the effect of the Mini-Cog with three-item recall test on the prefrontal cortex (PFC) activation and the relative oscillatory power in the 0.01-0.02-Hz (FahræΣus-Lindqvist effect) and 0.021-0.052 Hz (smooth muscle autonomic innervation) frequency bands in elderly (60 years and older) T2DM and age-matched controls. We found a significant (p<0.01) difference in the PFC activation between elderly subjects with T2DM and age-matched elderly controls. Moreover, power spectral density (PSD) analysis revealed a significantly lower relative power in 0.021-0.052 Hz (smooth muscle autonomic innervation) frequency band in elderly subjects with T2DM during the Mini-Cog three-item recall test. Furthermore, a drop in the oscillatory power in the 0.01-0.02 Hz frequency band during Mini-Cog three-item recall test was found more pronounced in the elderly subjects with T2DM. Therefore, our study highlighted portable brain imaging to capture cerebrovascular reactivity to cognitive load that may provide a biomarker of cerebrovascular dysfunction in T2DM. Clinical Relevance-Our study establishes forehead portable brain imaging under cognitive load for monitoring cerebrovascular function in T2DM.
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12
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Zanelli S, Ammi M, Hallab M, El Yacoubi MA. Diabetes Detection and Management through Photoplethysmographic and Electrocardiographic Signals Analysis: A Systematic Review. SENSORS (BASEL, SWITZERLAND) 2022; 22:4890. [PMID: 35808386 PMCID: PMC9269150 DOI: 10.3390/s22134890] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/17/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
(1) Background: Diabetes mellitus (DM) is a chronic, metabolic disease characterized by elevated levels of blood glucose. Recently, some studies approached the diabetes care domain through the analysis of the modifications of cardiovascular system parameters. In fact, cardiovascular diseases are the first leading cause of death in diabetic subjects. Thanks to their cost effectiveness and their ease of use, electrocardiographic (ECG) and photoplethysmographic (PPG) signals have recently been used in diabetes detection, blood glucose estimation and diabetes-related complication detection. This review's aim is to provide a detailed overview of all the published methods, from the traditional (non machine learning) to the deep learning approaches, to detect and manage diabetes using PPG and ECG signals. This review will allow researchers to compare and understand the differences, in terms of results, amount of data and complexity that each type of approach provides and requires. (2) Method: We performed a systematic review based on articles that focus on the use of ECG and PPG signals in diabetes care. The search was focused on keywords related to the topic, such as "Diabetes", "ECG", "PPG", "Machine Learning", etc. This was performed using databases, such as PubMed, Google Scholar, Semantic Scholar and IEEE Xplore. This review's aim is to provide a detailed overview of all the published methods, from the traditional (non machine learning) to the deep learning approaches, to detect and manage diabetes using PPG and ECG signals. This review will allow researchers to compare and understand the differences, in terms of results, amount of data and complexity that each type of approach provides and requires. (3) Results: A total of 78 studies were included. The majority of the selected studies focused on blood glucose estimation (41) and diabetes detection (31). Only 7 studies focused on diabetes complications detection. We present these studies by approach: traditional, machine learning and deep learning approaches. (4) Conclusions: ECG and PPG analysis in diabetes care showed to be very promising. Clinical validation and data processing standardization need to be improved in order to employ these techniques in a clinical environment.
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Affiliation(s)
- Serena Zanelli
- University of Paris 8, LAGA, CNRS, Institut Galilée, 93200 Saint Denis, France;
- SAMOVAR Telecom SudParis, CNRS, Institut Polytechnique de Paris, 91764 Paris, France;
| | - Mehdi Ammi
- University of Paris 8, LAGA, CNRS, Institut Galilée, 93200 Saint Denis, France;
| | | | - Mounim A. El Yacoubi
- SAMOVAR Telecom SudParis, CNRS, Institut Polytechnique de Paris, 91764 Paris, France;
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13
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Hina A, Saadeh W. Noninvasive Blood Glucose Monitoring Systems Using Near-Infrared Technology—A Review. SENSORS 2022; 22:s22134855. [PMID: 35808352 PMCID: PMC9268854 DOI: 10.3390/s22134855] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/12/2022] [Accepted: 06/20/2022] [Indexed: 11/16/2022]
Abstract
The past few decades have seen ongoing development of continuous glucose monitoring (CGM) systems that are noninvasive and accurately measure blood glucose levels. The conventional finger-prick method, though accurate, is not feasible for use multiple times a day, as it is painful and test strips are expensive. Although minimally invasive and noninvasive CGM systems have been introduced into the market, they are expensive and require finger-prick calibrations. As the diabetes trend is high in low- and middle-income countries, a cost-effective and easy-to-use noninvasive glucose monitoring device is the need of the hour. This review paper briefly discusses the noninvasive glucose measuring technologies and their related research work. The technologies discussed are optical, transdermal, and enzymatic. The paper focuses on Near Infrared (NIR) technology and NIR Photoplethysmography (PPG) for blood glucose prediction. Feature extraction from PPG signals and glucose prediction with machine learning methods are discussed. The review concludes with key points and insights for future development of PPG NIR-based blood glucose monitoring systems.
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14
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Antonova N, Velcheva I, Paskova V. Hemorheological and microvascular disturbances in patients with type 2 diabetes mellitus. Clin Hemorheol Microcirc 2022; 81:325-341. [DOI: 10.3233/ch-221393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND: In the blood vessels the impaired hemorheological parameters in patients with type 2 diabetes mellitus (T2DM) could lead to elevated flow resistance, increased forces at the endothelial wall and to microvascular disturbances. OBJECTIVE: The aim of the study is to investigate the hemorheological variables and the changes of the skin blood flow responses to cold stress in T2DM patients. METHODS: The basic hemorheological parameters: hematocrit (Ht), fibrinogen (Fib), whole blood viscosity (WBV) and plasma viscosity (PV) were examined in 20 patients with T2DM and a control group of 10 healthy age and sex matched controls. The mechanisms of vascular tone regulation were investigated using the wavelet analysis of the skin temperature oscillations (WAST). The degrees of the microvascular tone changes were determined during a cold test in the endothelial (0.02–0.0095 Hz), neurogenic (0.05– 0.02 Hz) and myogenic (0.05– 0.14 Hz) frequency ranges. RESULTS: Significant increase of Fib and WBV in the patients in comparison to controls was found. The mean values of the amplitudes of the skin temperature (ST) pulsations decreased significantly during the cold stress only in the endothelial frequency range for the diabetic patients. CONCLUSIONS: The results of our study reveal parallel impairment of the blood rheological parameters and the cutaneous microcirculation in T2DM patients.
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Affiliation(s)
- Nadia Antonova
- Department of Biomechanics, Institute of Mechanics to the Bulgarian Academy of Sciences, Bulgaria
| | - Irena Velcheva
- Clinic of Neurology, Uni Hospital, Panagyurishte, Bulgaria
| | - Vasilka Paskova
- Department of Biomechanics, Institute of Mechanics to the Bulgarian Academy of Sciences, Bulgaria
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15
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Label-free multi-step microfluidic device for mechanical characterization of blood cells: Diabetes type II. MICRO AND NANO ENGINEERING 2022. [DOI: 10.1016/j.mne.2022.100149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Hemorheological Parameters in Diabetic Patients: Role of Glucose Lowering Therapies. Metabolites 2021; 11:metabo11120806. [PMID: 34940563 PMCID: PMC8708076 DOI: 10.3390/metabo11120806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/22/2021] [Accepted: 11/24/2021] [Indexed: 12/26/2022] Open
Abstract
Diabetes mellitus influences several important hemorheological parameters including blood viscosity, erythrocyte aggregation and deformability. In the present study, 159 type-2 diabetic patients and 25 healthy controls were involved. Patient's age, body weight, body mass index (BMI), smoking habits, physical activity, history of cardiovascular diseases, current antidiabetic therapy and concomitant medication were recorded. Patients were grouped according to their antidiabetic treatment with insulin, or with one or more of the following antidiabetic drugs: metformin, sulfonylureas, acarbose, or no antidiabetic therapy. Hemorheological measurements (hematocrit, erythrocyte aggregation, plasma fibrinogen, whole blood and plasma viscosity), von Willebrand factor activity, and platelet aggregation measurements were performed. Platelet aggregation was investigated with the method of Born. Plasma viscosity and red blood cell aggregation were significatly higher in diabetes. No significant difference was found in hemorheological parameters between different antidiabetic regimens. Whole blood and plasma viscosity and red blood cell aggregation correlated with glucose levels but not with HbA1C levels. In conclusion, plasma and whole blood viscosity, as well as red blood cell aggregation appear to be associated with concurrent hyperglycemia, but not with the quality of glycemic control or the applied antidiabetic treatment. Platelet aggregation induced by ADP or epinephrine does not seem to be associated with diabetes even at subthreshold doses.
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17
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Li Y, Shi D, Zhang H, Yao X, Wang S, Wang R, Ren K. The Application of Functional Magnetic Resonance Imaging in Type 2 Diabetes Rats With Contrast-Induced Acute Kidney Injury and the Associated Innate Immune Response. Front Physiol 2021; 12:669581. [PMID: 34267672 PMCID: PMC8276794 DOI: 10.3389/fphys.2021.669581] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/27/2021] [Indexed: 12/14/2022] Open
Abstract
AIMS Contrast-induced acute kidney injury (CI-AKI) is the third most common in-hospital acquired AKI, and its mechanism is not fully clear. Its morbidity increases among populations with chronic kidney disease (CKD), older age, diabetes mellitus (DM), and so on. Immediate and effective noninvasive diagnostic methods are lacking, so CI-AKI often prolongs hospital stays and increases extra medical costs. This study aims to explore the possibility of diagnosing CI-AKI with functional magnetic resonance imaging (fMRI) based on type 2 DM rats. Moreover, we attempt to reveal the immune response in CI-AKI and to clarify why DM is a predisposing factor for CI-AKI. METHODS A type 2 DM rat model was established by feeding a high-fat and high-sugar diet combined with streptozotocin (STZ) injection. Iodixanol-320 was the contrast medium (CM) administered to rats. Images were obtained with a SIEMENS Skyra 3.0-T magnetic resonance imager. Renal histopathology was evaluated using H&E staining and immunohistochemistry (IHC). The innate immune response was revealed through western blotting and flow cytometry. RESULTS Blood oxygenation level-dependent (BOLD) imaging and intravoxel incoherent motion (IVIM) imaging can be used to predict and diagnose CI-AKI effectively. The R 2 ∗ value (r > 0.6, P < 0.0001) and D value (| r| > 0.5, P < 0.0001) are strongly correlated with histopathological scores. The NOD-like receptor pyrin 3 (NLRP3) inflammasome participates in CI-AKI and exacerbates CI-AKI in DM rats. Moreover, the percentages of neutrophils and M1 macrophages increase dramatically in rat kidneys after CM injection (neutrophils range from 56.3 to 56.6% and M1 macrophages from 48 to 54.1% in normal rats, whereas neutrophils range from 85.5 to 92.4% and M1 macrophages from 82.1 to 89.8% in DM rats). CONCLUSIONS/INTERPRETATION BOLD and IVIM-D can be effective noninvasive tools in predicting CI-AKI. The innate immune response is activated during the progression of CI-AKI and DM will exacerbate this progression.
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Affiliation(s)
- Yanfei Li
- Department of Radiology, Xiang’an Hospital of Xiamen University, Xiamen, China
| | - Dafa Shi
- Department of Radiology, Xiang’an Hospital of Xiamen University, Xiamen, China
| | - Haoran Zhang
- Department of Radiology, Xiang’an Hospital of Xiamen University, Xiamen, China
| | - Xiang Yao
- Department of Radiology, Xiang’an Hospital of Xiamen University, Xiamen, China
| | - Siyuan Wang
- Department of Radiology, Xiang’an Hospital of Xiamen University, Xiamen, China
| | - Rui Wang
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen, China
| | - Ke Ren
- Department of Radiology, Xiang’an Hospital of Xiamen University, Xiamen, China
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Heckel AR, Cilhoroz BT, Rosenberg J. The vascular response to acute hyperglycaemia: What is the role of exercise capacity? J Physiol 2021; 600:711-713. [PMID: 34089519 DOI: 10.1113/jp281813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 05/30/2021] [Indexed: 11/08/2022] Open
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Caimi G, Urso C, Brucculeri S, Amato C, Carlisi M, Lo Presti R. An assessment of the hemorheological profile in patients with subclinical carotid atherosclerosis divided in relation to the number of cardiovascular risk factors and different degrees of insulin resistance. Clin Hemorheol Microcirc 2021; 78:417-428. [PMID: 33843665 DOI: 10.3233/ch-211105] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We present a cohort of 100 subjects [43 men and 57 women; median age 66.00(25)] who were tested using carotid ultrasound to identify subclinical carotid atherosclerosis (SCA). We have evaluated the behaviour of whole blood viscosity (WBV) at high (450 s-1) and low (0.51 s-1) shear rates, plasma viscosity (450-1), hematocrit and mean erythrocyte aggregation. When compared to normal control subjects, using the Mann-Whitney test, we observed in SCA patients a significant increase in WBV only. The results were substantial after having divided the SCA subjects according to the cardiovascular risk factors (CRFs) and the degree of insulin resistance; the research was performed using two surrogate indexes such as TG/HDL-C and TyG. With the division carried out according to CRFs, employing the Kruskal-Wallis test, results show a significant increase in WBV (at high and low shear rates), in plasma viscosity, in erythrocyte aggregation and plasma fibrinogen level. Whereas by dividing them into the median of TG/HDL-C and TyG, we noticed a significant increase in WBV (at high and low shear rates) and in erythrocyte aggregation in the two groups with high TG/HDL-C ratio and with high TyG; having found an increased level of plasma fibrinogen in the latter. The data underlines the role of the main hemorheologic aspects in subclinical carotid atherosclerosis being closely correlated to the CRFs and different degrees of insulin resistance.
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Affiliation(s)
- G Caimi
- Department of Health Promotion and Child Care, Internal Medicine and Medical Specialties, Universitá Degli Studi Di Palermo, Palermo, Italy
| | - C Urso
- Fondazione Istituto "G. Giglio" Cefalú, Palermo, Italy
| | - S Brucculeri
- Fondazione Istituto "G. Giglio" Cefalú, Palermo, Italy
| | - C Amato
- Department of Health Promotion and Child Care, Internal Medicine and Medical Specialties, Universitá Degli Studi Di Palermo, Palermo, Italy
| | - M Carlisi
- Department of Health Promotion and Child Care, Internal Medicine and Medical Specialties, Universitá Degli Studi Di Palermo, Palermo, Italy
| | - R Lo Presti
- Department of Psychology, Educational Science and Human Movement, Universitá Degli Studi Di Palermo, Palermo, Italy
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Kalidoss R, Umapathy S, Kothalam R, Sakthivelu U. Adsorption kinetics feature extraction from breathprint obtained by graphene based sensors for diabetes diagnosis. J Breath Res 2020; 15:016005. [PMID: 33049727 DOI: 10.1088/1752-7163/abc09b] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The correlation between blood glucose and breath acetone suggested by several studies has spurred the research community to develop an electronic (e-nose) for diabetes diagnosis. Herein, we have validated the in-house graphene based sensors with known acetone concentration. The sensor performances such as sensitivity, selectivity and stability (SSS) suggested their potential use in acquiring breath print. The 10% higher mean saturation voltage for 30 diabetic subjects ensured a discrimination accuracy of 65% with a positive correlation (r = 0.88) between biochemically measured and non-invasively estimated (glycated haemoglobin) HbA1c. For the improvement of classification rate, thirteen features associated with the adsorption kinetics were extracted from the breathprint from each of the three sensors. The features given as an input to the Naïve Bayes classification model fetched an accuracy of 68.33%. Elimination of redundant features by distinction index and one-R feature ranking algorithm results in Naïve Bayes algorithm with improved performances. The success rate has improved to 70% using the subset of features ranked by one-R algorithm. These results indicated the use of feature ranking algorithms and prediction models for the improvement in accuracy of our in-house fabricated graphene based sensors.
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Affiliation(s)
- Ramji Kalidoss
- Department of Biomedical Engineering, College of Engineering and Technology, SRM Institute of Science & Technology, Tamil Nadu, Kattankulathur 603203, India. Department of Biomedical Engineering, Bharath Institute of Higher Education and Research, Chennai, Tamil Nadu 600073, India
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21
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Thirunavukkarasu U, Umapathy S, Janardhanan K, Thirunavukkarasu R. A computer aided diagnostic method for the evaluation of type II diabetes mellitus in facial thermograms. Phys Eng Sci Med 2020; 43:871-888. [PMID: 32524377 DOI: 10.1007/s13246-020-00886-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 06/02/2020] [Indexed: 12/11/2022]
Abstract
Almost 50% of individuals around the globe are unaware of diabetes and its complications. So, an early screening of diabetes is very important at this current situation. To overcome the difficulties such as pain and discomfort to the subjects obtained from the biochemical diagnostic procedures; an infrared thermography is the diagnostic technique which measures the skin surface temperature noninvasively. Thus, the aim of our proposed study was to evaluate the type II diabetes in facial thermograms and to develop a computer aided diagnosis (CAD) system to classify the normal and diabetes. The facial thermograms (n = 160) including male (n = 79) and female (n = 81) were captured using FLIR A 305sc infrared thermal camera. The Haralick textural features were extracted from the facial thermograms based on gray level co-occurrence matrix algorithm. The TROI, TMAX, and TTOT are the statistical temperature parameters exhibited a significant negative correlation with HbA1c (r = - 0.421, - 0.411, - 0.242, p < 0.01 (TROI); r = - 0.259, p < 0.01(TMAX) and - 0.173, p < 0.05 (TTOT)). An optimal regression equation has been constructed by using the significant facial variables and standard HbA1c values. The model has achieved sensitivity, specificity, and accuracy rate as 91.42%, 88.57%, and 90% respectively. The anthropometrical variables, extracted textural features and temperature parameters were fed into the classifiers and their performances were compared. The Support Vector Machine outperformed the Linear Discriminant Analysis (84.37%) and k-Nearest Neighbor (81.25%) classifiers with the maximum accuracy rate of 89.37%. The developed CAD system has achieved 89.37% of accuracy rate for the classification of diabetes. Thus, the facial thermography could be used as the basic non-invasive prognostic tool for the evaluation of type II diabetes mellitus.
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Affiliation(s)
- Usharani Thirunavukkarasu
- Department of Biomedical Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India
| | - Snekhalatha Umapathy
- Department of Biomedical Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India.
| | - Kumar Janardhanan
- Department of General Medicine, SRM Hospital & Research Centre, Tamil Nadu, Kattankulathur, 603203, India
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22
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Exploring NIR Aza-BODIPY-Based Polarity Sensitive Probes with ON-and-OFF Fluorescence Switching in Pluronic Nanoparticles. Polymers (Basel) 2020; 12:polym12030540. [PMID: 32131504 PMCID: PMC7183047 DOI: 10.3390/polym12030540] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/18/2020] [Accepted: 02/20/2020] [Indexed: 11/23/2022] Open
Abstract
Because of their deep penetration capability in tissue, red or near infrared (NIR) fluorophores attract much attention in bio-optical imaging. Among these fluorophores, the ones that respond to the immediate microenvironment (i.e., temperature, polarity, pH, viscosity, hypoxia, etc.) are highly desirable. We studied the response of six NIR aza-BODIPY-based and structurally similar fluorophores to polarity and viscosity for incorporation inside Pluronic nanoparticles as switchable fluorescent probes (SFPs). Based on our results, all of these fluorophores were moderately to strongly sensitive to the polarity of the microenvironment. We concluded that attaching amine groups to the fluorophore is not necessary for having strong polarity sensitive probes. We further studied the response of the fluorophores when embedded inside Pluronic nanoparticles and found that four of them qualified as SFPs. We also found that the switching ratio of the fluorophore-encapsulated Pluronic nanoparticles (ION-to-IOFF) is related to the length of the hydrophobic chain of the Pluronic tri-block copolymers. As such, the highest switching ratio pertained to F-68 with the lowest hydrophobic block poly (propylene oxide) (PPO chain of only 30 units).
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23
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Zhang G, Zhang T, Sun X, Tang F, Lin H, Liu Y, Zhang C, Xue F. Whole blood viscosity is an independent early predictor for metabolic syndrome and its components in men: A prospective cohort study in Northern Chinese population. Clin Hemorheol Microcirc 2020; 80:1-8. [PMID: 31929145 DOI: 10.3233/ch-15120] [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: 01/24/2023]
Abstract
The association between whole blood viscosity (WBV) and metabolic syndrome (MetS) is still scarcely investigated in the population-based prospective cohort. We aim to explore the longitudinal effect of WBV on MetS, and to verify whether WBV measures can be used as early predictors for MetS. The longitudinal cohort consisted of 3,508 adults (2,350 males and 1,158 females) who visited the health check-up system twice. WBV were measured at four shear rate (200, 50, 10 and 1 s-1), and their values were classified into quartiles. Multivariate Cox models were used to estimate the adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) in men and women, respectively. A total of 444 (12.66%) incident MetS were observed at follow-up period. The incidences of MetS significantly increased with increasing quartiles of WBVs at all of the shear rate in men. After adjusting for baseline age, smoking, obesity, hypertension, hyperglycemia, and hyperlipidemia status, all of the WBV measures were significantly associated with incident MetS in men, and the HRs showed clear increasing trend across the quartiles of baseline WBVs. There were no significant association between WBVs and incident MetS in women. These findings suggest that MetS has a hemodynamic basis, and WBVs could be used as independent early predictor for MetS in men.
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Affiliation(s)
- Guang Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Shandong University, Jinan, China
| | - Tao Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Shandong University, Jinan, China
| | - Xiubin Sun
- Department of Epidemiology and Biostatistics, School of Public Health, Shandong University, Jinan, China
| | - Fang Tang
- Department of Epidemiology and Biostatistics, School of Public Health, Shandong University, Jinan, China
| | - Haiyan Lin
- Department of Epidemiology and Biostatistics, School of Public Health, Shandong University, Jinan, China
| | - Yanxun Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Shandong University, Jinan, China
| | - Chengqi Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Shandong University, Jinan, China
| | - Fuzhong Xue
- Department of Epidemiology and Biostatistics, School of Public Health, Shandong University, Jinan, China
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Gnasso A, Cacia M, Cutruzzolà A, Minieri M, Carallo C, Cortese C, Irace C. Influence of acute reduction of blood viscosity on endothelial function. Clin Hemorheol Microcirc 2019; 72:239-245. [PMID: 30909194 DOI: 10.3233/ch-180446] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND The relationship between blood viscosity (BV) and endothelial function is rather complex. An increase in BV causes an increase in blood flow resistance, with negative hemodynamic effects; on the other hand, a moderate increase in BV causes an increase in wall stress shear (WSS), and consequent beneficial effects. As a matter of fact, the effect of changes in BV on endothelial function is not yet clear. OBJECTIVES Aim of the present study was to evaluate in-vivo the effects of the acute reduction in BV on endothelial function, in healthy male subjects. METHODS Fourteen healthy male blood donors were studied before and 48 hours after blood donation. Blood and plasma viscosity were measured at 37C° with a cone-plate viscometer. Endothelial function was evaluated through flow mediated vasodilation (FMD). RESULTS Blood viscosity was reduced after blood donation (BV225 (cP) 4.53±0.59 vs.4.18±0.31, p < 0.05). FMD 50 s after cuff deflation was unchanged: 6.23±3.84 vs. 6.62±4.81, p = NS. The vasodilation, however, lasted longer and the area under the curve of FMD was significantly increased: 8.74±8.77 vs.16.14±8.65, p < 0.005. CONCLUSIONS The present results demonstrate that the acute reduction of BV prolongs vasodilation, without affecting the amount of vasodilatation, possibly as adaptive reaction allowing more time for oxygen release.
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The effect of electric field, magnetic field, and infrared ray combination to reduce HOMA-IR index and GLUT 4 in diabetic model of Mus musculus. Lasers Med Sci 2019; 35:1315-1321. [PMID: 31741149 DOI: 10.1007/s10103-019-02916-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 11/06/2019] [Indexed: 10/25/2022]
Abstract
Diabetes mellitus (DM) is a metabolic disorder characterized by high blood glucose level (hyperglycemia). Type 2 diabetes mellitus is mainly featured by low cell sensitivity towards insulin stimulation, caused by ectopic fat storage. Insulin resistance can be quantified from high number of HOMA-IR index and observed from glucose transporter 4 (GLUT-4) translocation on membrane of skeletal muscle cells. Combined treatment of electric field, magnetic field, and infrared ray have potential to reduce insulin resistance due to improving blood circulation and increasing intracellular Ca2+ level. The aim of study was to determine the effect of electric field, magnetic field, and infrared ray combination to lower insulin resistance in the type II diabetic model of Mus musculus. This study used 30 adult male mice strain BALB/c. Diabetes was induced using high-fat diet/streptozotocin method until random blood glucose level reached > 200 mg/dL. Diabetic mice were then exposed to electrical field (static and dynamic), magnetic field (static and induce), and infrared ray (with or without infrared ray) combination therapy 15 min daily for 28 days. Fasting blood glucose level, plasma insulin level, HOMA-IR index, and membrane GLUT-4 density after treatment were analyzed statistically at α = 0.05. Result showed that exposure combination of electrical field, magnetic field, and infrared were found to be able to lower fasting blood glucose level and HOMA-IR index significantly, but plasma insulin level and GLUT-4 density were not found to be significantly different compared to diabetic control. Based on current study result, the best combination for reducing insulin resistance in diabetic mice is BsEsI (combination of static magnetic field (Bs), static electric field (Es), with infrared (I)), indicated by lowest HOMA-IR compared to other groups. Exposure to combination of magnetic field, electrical field, and infrared resulted in lowering fasting blood glucose level and HOMA-IR index in diabetic mice, indicating reduced insulin resistance.
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Woodcock EM, Girvan P, Eckert J, Lopez-Duarte I, Kubánková M, van Loon JJWA, Brooks NJ, Kuimova MK. Measuring Intracellular Viscosity in Conditions of Hypergravity. Biophys J 2019; 116:1984-1993. [PMID: 31053255 DOI: 10.1016/j.bpj.2019.03.038] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 02/28/2019] [Accepted: 03/19/2019] [Indexed: 12/12/2022] Open
Abstract
Gravity-sensitive cellular responses are regularly observed in both specialized and nonspecialized cells. One potential mechanism for this sensitivity is a changing viscosity of the intracellular organelles. Here, we report a novel, to our knowledge, viscosity-sensitive molecular rotor based on mesosubstituted boron-dipyrrin used to investigate the response of viscosity of cellular membranes to hypergravity conditions created at the large diameter centrifuge at the European Space Agency Technology Centre. Mouse osteoblastic (MC3T3-E1) and endothelial (human umbilical vein endothelial cell) cell lines were tested, and an increase in viscosity was found with increasing hypergravity loading. This response is thought to be primarily biologically driven, with the potential for a small, instantaneous physical mechanism also contributing to the observed effect. This work provides the first, to our knowledge, quantitative data for cellular viscosity changes under hypergravity, up to 15 × g.
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Affiliation(s)
- Emma M Woodcock
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom; Institute of Chemical Biology, Imperial College London, South Kensington, London, United Kingdom
| | - Paul Girvan
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom; Institute of Chemical Biology, Imperial College London, South Kensington, London, United Kingdom
| | - Julia Eckert
- Department of Physics, School of Science, Technische Universität Dresden, Dresden, Germany; European Space Agency Technology Centre, TEC-MMG LIS Lab, Noordwijk, the Netherlands
| | - Ismael Lopez-Duarte
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom
| | - Markéta Kubánková
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom
| | - Jack J W A van Loon
- European Space Agency Technology Centre, TEC-MMG LIS Lab, Noordwijk, the Netherlands; Department of Oral and Maxillofacial Surgery/Oral Pathology, Dutch Experiment Support Centre, Academic Centre for Dentistry Amsterdam, VU University Medical Centre, Amsterdam, the Netherlands
| | - Nicholas J Brooks
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom; Institute of Chemical Biology, Imperial College London, South Kensington, London, United Kingdom.
| | - Marina K Kuimova
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom; Institute of Chemical Biology, Imperial College London, South Kensington, London, United Kingdom.
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Pseudomyocardial Infarction in a Patient with Severe Diabetic Ketoacidosis and Mild Hyperkalemia. Case Rep Cardiol 2019; 2019:4063670. [PMID: 31049229 PMCID: PMC6462314 DOI: 10.1155/2019/4063670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 03/07/2019] [Indexed: 11/18/2022] Open
Abstract
A 48-year-old male with a prior diagnosis of diabetes mellitus presented to the emergency department with malaise and nausea. On work-up, he was found with hyperglycemia and high anion gap metabolic acidosis, with a blood pH < 6.94. A diagnosis of severe diabetic ketoacidosis was established; serum electrolyte analysis showed mild hyperkalemia. On work-up, a 12-lead electrocardiogram was obtained, and it showed an ST-segment elevation on anterior leads that completely resolved with diabetic ketoacidosis treatment. ST-segment elevation myocardial infarction can be a precipitant factor for diabetic ketoacidosis, and evaluation of diabetic patients with suspected myocardial infarction can be challenging since they can present with atypical or little symptoms. Hyperkalemia, which usually accompanies diabetic ketoacidosis, can cause electrocardiographic alterations that are well described, but ST-segment elevation is uncommon. A pseudomyocardial infarction pattern has been described in patients with diabetic ketoacidosis; of note, most of these patients presented severe hyperkalemia. We believe this is of great importance for clinicians because they must be able to recognize those patients that present with electrocardiographic abnormalities secondary to the metabolic alterations and those that can be experiencing actual ongoing ischemia, in order to establish an appropriate and prompt treatment.
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Mushtaq M, Abdul Mateen M, Kim UH. Hyperglycemia associated blood viscosity can be a nexus stimuli. Clin Hemorheol Microcirc 2019; 71:103-112. [DOI: 10.3233/ch-180426] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Mazhar Mushtaq
- Department of Basic Sciences, Sulaiman AlRajhi Colleges, Medical College, Al-Qaseem, KSA
| | - Muhammad Abdul Mateen
- Department of Basic Sciences, Sulaiman AlRajhi Colleges, Medical College, Al-Qaseem, KSA
| | - Uh-Hyun Kim
- Institute of Cardiovascular Research, Chonbuk National University Medical School, Jeonju, South Korea
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Hong H, Song JM, Yeom E. 3D printed microfluidic viscometer based on the co-flowing stream. BIOMICROFLUIDICS 2019; 13:014104. [PMID: 30867875 PMCID: PMC6404922 DOI: 10.1063/1.5063425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 12/23/2018] [Indexed: 06/09/2023]
Abstract
Considering the role of viscosity in the dynamics of physical, chemical, and biological systems, accurate measurement of viscosity is essential. Although many conventional viscometers have been widely used, these conventional viscometers suffer from some drawbacks. In this study, a three-dimensional (3D) printed microfluidic viscometer was proposed based on the estimation of the pressure between two fluids to easily measure viscosity with small samples. The 3D printed microfluidic viscometer can be fabricated through amine-epoxy bonding on 3D printed blocks. By separately delivering samples and reference fluids into two inlets, an interfacial line could be induced. Based on the relation between the pressure ratio and the width of the reference flow, the viscosity (μ) of the sample can be estimated by measuring the relative width of the reference flow. The relation between the pressure and interfacial width between test samples and reference flows in the 3D printed microfluidic viscometers was analyzed by experiment and simulation to determine the effects of the mesh-like pattern of the 3D printed viscometers on the pressure estimation. To validate the proposed method, the viscosity values of glycerol mixtures measured by the 3D printed viscometer were compared with those measured by a conventional viscometer. As an application of the 3D printed viscometer, the viscosity curves for blood samples collected from diabetic and non-diabetic patients depending on their shear rates were compared. As expected, a high blood viscosity in the diabetic group was observed. Based on the experimental demonstrations, the 3D printed viscometer has strong potential to develop portable viscometers that can be translated to commercial outcomes.
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Affiliation(s)
- Hyeonji Hong
- School of Mechanical Engineering, Pusan National University, Busan 46241, South Korea
| | - Jae Min Song
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Busan 49241, South Korea
| | - Eunseop Yeom
- School of Mechanical Engineering, Pusan National University, Busan 46241, South Korea
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Blood Viscosity, Glycemic Markers and Blood Pressure: A Study in Middle-Aged Normotensive and Hypertensive Type 2 Diabetics. Indian J Clin Biochem 2018; 35:102-108. [PMID: 32071502 DOI: 10.1007/s12291-018-0798-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 10/17/2018] [Indexed: 12/19/2022]
Abstract
Altered blood viscosity (BV) may affect blood pressure (BP) and develops further complications in diabetes. A case-control study was performed to examine the relationship of erythrocyte sedimentation rate (ESR), hematocrit, fibrinogen, and BV with glycemic markers and BP in middle-aged normotensive and hypertensive type 2 diabetic patients and healthy controls. A total of 145 participants between age group 30-50 years divided into three groups; controls (n = 60), type 2 diabetes mellitus (T2DM, n = 55), and T2DM with hypertension (T2DM + HTN, n = 30). ESR and hematocrit were determined by Wintrobe's method. Plasma fibrinogen was measured using Lempert method and BV calculated using Merill's formula. T2DM and T2DM + HTN patients had higher fasting plasma glucose (FPG), glycated hemoglobin (HbA1c), systolic BP (SBP), diastolic BP (DBP), mean arterial pressure (MAP), ESR, and fibrinogencompared to controls. In both male and female SBP, DBP, MAP, FPG, and HbA1c were significantly higher in T2DM and T2DM + HTN groups, compared to controls. Further, linear regression analysis revealed a positive association of ESR and fibrinogen with SBP, DBP, MAP, FPG, HbA1c, and positive diabetic status in all participants. Also, in the same analysis, BV showed a positive association with SBP, DBP, and MAP. The association of ESR and fibrinogenwith glycemic markers and BP in diabetes supporting the value of emerging marker's for early prediction of T2DM and hypertension.
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Corante N, Anza-Ramírez C, Figueroa-Mujíca R, Macarlupú JL, Vizcardo-Galindo G, Bilo G, Parati G, Gamboa JL, León-Velarde F, Villafuerte FC. Excessive Erythrocytosis and Cardiovascular Risk in Andean Highlanders. High Alt Med Biol 2018; 19:221-231. [PMID: 29782186 PMCID: PMC6157350 DOI: 10.1089/ham.2017.0123] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Corante, Noemí, Cecilia Anza-Ramírez, Rómulo Figueroa-Mujíca, José Luis Macarlupú, Gustavo Vizcardo-Galindo, Grzegorz Bilo, Gianfranco Parati, Jorge L. Gamboa, Fabiola León-Velarde, and Francisco C. Villafuerte. Excessive erythrocytosis and cardiovascular risk in Andean highlanders. High Alt Med Biol. 19:221–231, 2018.—Cardiovascular diseases are the main cause of death worldwide. Life under high-altitude (HA) hypoxic conditions is believed to provide highlanders with a natural protection against cardiovascular and metabolic diseases compared with sea-level inhabitants. However, some HA dwellers become intolerant to chronic hypoxia and develop a progressive incapacitating syndrome known as chronic mountain sickness (CMS), characterized by excessive erythrocytosis (EE; Hb ≥21 g/dL in men, Hb ≥19 g/dL in women). Evidence from HA studies suggests that, in addition to CMS typical signs and symptoms, these highlanders may also suffer from metabolic and cardiovascular disorders. Thus, we hypothesize that this syndrome is also associated to the loss of the cardiometabolic protection observed in healthy highlanders (HH), and therefore to a higher cardiovascular risk (CVR). The aim of the present work was to evaluate the association between EE and CVR calculated using the Framingham General CVR Score and between EE and CVR factors in male highlanders. This cross-sectional study included 342 males from Cerro de Pasco, Peru at 4340 m (HH = 209, CMS = 133). Associations were assessed by multiple logistic regressions adjusted for potential confounders (BMI, pulse oxygen saturation and age). The adjusted models show that the odds of high CVR (>20%) in highlanders with EE was 3.63 times the odds in HH (CI 95%:1.22–10.78; p = 0.020), and that EE is associated to hypertension, elevated fasting serum glucose, insulin resistance, and elevated fasting serum triglycerides. Our results suggest that individuals who suffer from EE are at increased risk of developing cardiovascular events compared with their healthy counterparts.
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Affiliation(s)
- Noemí Corante
- 1 Laboratorio de Fisiología Comparada, Departamento de Ciencias Biológicas y Fisiológicas, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia. Lima , Perú
| | - Cecilia Anza-Ramírez
- 1 Laboratorio de Fisiología Comparada, Departamento de Ciencias Biológicas y Fisiológicas, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia. Lima , Perú
| | - Rómulo Figueroa-Mujíca
- 1 Laboratorio de Fisiología Comparada, Departamento de Ciencias Biológicas y Fisiológicas, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia. Lima , Perú
| | - José Luis Macarlupú
- 1 Laboratorio de Fisiología Comparada, Departamento de Ciencias Biológicas y Fisiológicas, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia. Lima , Perú
| | - Gustavo Vizcardo-Galindo
- 1 Laboratorio de Fisiología Comparada, Departamento de Ciencias Biológicas y Fisiológicas, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia. Lima , Perú
| | - Grzegorz Bilo
- 2 Department of Medicine and Surgery, University of Milano-Bicocca , Milano, Italy .,3 Department of Cardiovascular, Neural and Metabolic Sciences, IRCCS Istituto Auxologico Italiano , Milano, Italy
| | - Gianfranco Parati
- 2 Department of Medicine and Surgery, University of Milano-Bicocca , Milano, Italy .,3 Department of Cardiovascular, Neural and Metabolic Sciences, IRCCS Istituto Auxologico Italiano , Milano, Italy
| | - Jorge L Gamboa
- 4 Division of Clinical Pharmacology, Vanderbilt University Medical Center , Nashville, Tennessee
| | - Fabiola León-Velarde
- 1 Laboratorio de Fisiología Comparada, Departamento de Ciencias Biológicas y Fisiológicas, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia. Lima , Perú
| | - Francisco C Villafuerte
- 1 Laboratorio de Fisiología Comparada, Departamento de Ciencias Biológicas y Fisiológicas, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia. Lima , Perú
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Gnasso A, Cacia M, Cortese C, Succurro E, Andreozzi F, Carallo C, Irace C. No effect on the short-term of a decrease in blood viscosity on insulin resistance. Clin Hemorheol Microcirc 2018; 68:45-50. [PMID: 29036798 DOI: 10.3233/ch-170288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Blood viscosity (BV) might influence glucose delivery to peripheral tissues and play an important role in insulin resistance and diabetes mellitus. However, the exact relationship between BV and insulin resistance is not yet clear. OBJECTIVES Aim of the present study is to evaluate the effects of the acute reduction in BV on insulin resistance, in healthy male subjects. METHODS Fifteen healthy male blood donors have been studied before and 48 hours after blood donation. Blood and plasma viscosity have been measured at 37°C with a cone-plate viscometer. Insulin resistance has been evaluated by euglycemic/hyperinsulinemic clamp in eight subjects, and by iHOMA2 Index in further seven subjects. RESULTS Blood viscosity was markedly reduced after blood donation (BV225 (cP) 4.53 ± 0.59 vs. 4.18 ± 0.31, p < 0.05). Insulin resistance was unchanged: MFFM clamp: 5.6 ± 4.5vs. 4.4 ± 2.2 and iHOMA2 Index 1.2 ± 0.6 vs. 1.2 ± 0.5, before vs. after respectively, p = NS. Blood pressure and lipids were unchanged after blood donation. CONCLUSIONS The present results demonstrate that acute reduction of BV in healthy male subjects does not change the insulin resistance, measured using both euglycemic/hyperinsulinemic clamp and iHOMA2 Index. Further intervention studies are needed to assess the effect that the reduction in BV can have in subjects with insulin resistance.
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Affiliation(s)
- Agostino Gnasso
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Catanzaro, Italy
| | - Michele Cacia
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Catanzaro, Italy
| | - Claudio Cortese
- Department of Experimental Medicine and Surgery, Tor Vergata University, Rome, Italy
| | - Elena Succurro
- Department of Medical and Surgical Sciences, Magna Græcia University of Catanzaro, Catanzaro, Italy
| | - Francesco Andreozzi
- Department of Medical and Surgical Sciences, Magna Græcia University of Catanzaro, Catanzaro, Italy
| | - Claudio Carallo
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Catanzaro, Italy
| | - Concetta Irace
- Department of Health Science, Magna Græcia University of Catanzaro, Catanzaro, Italy
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Irace C, Casciaro F, Scavelli FB, Oliverio R, Cutruzzolà A, Cortese C, Gnasso A. Empagliflozin influences blood viscosity and wall shear stress in subjects with type 2 diabetes mellitus compared with incretin-based therapy. Cardiovasc Diabetol 2018; 17:52. [PMID: 29631585 PMCID: PMC5891980 DOI: 10.1186/s12933-018-0695-y] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 03/28/2018] [Indexed: 12/24/2022] Open
Abstract
Background Cardiovascular protection following empagliflozin therapy is not entirely attributable to the glucose lowering effect. Increased hematocrit might influence the shear stress that is the main force acting on the endothelium, regulating its anti-atherogenic function. Objective We designed the study with the aim of investigating the effect of empagliflozin on blood viscosity and shear stress in the carotid arteries. A secondary endpoint was the effect of empagliflozin on carotid artery wall thickness. Methods The study was a non-randomized, open, prospective cohort study including 35 type 2 diabetic outpatients who were offered empagliflozin or incretin-based therapy (7 liraglutide, 8 sitagliptin) in combination with insulin and metformin. Blood viscosity, shear stress and carotid wall thickness were measured at baseline and at 1 and 3 months of treatment. Blood viscosity was measured with a viscometer, and shear stress was calculated using a validated formula. Intima-media thickness (IMT) of the carotid artery was detected by ultrasound and was measured with dedicated software. Results Blood viscosity (4.87 ± 0.57 vs 5.32 ± 0.66 cP, p < 0.02) and shear stress significantly increased in the Empagliflozin group while no change was detected in the Control group (4.66 ± 0.56 vs 4.98 ± 0.73 cP, p = NS). IMT significantly decreased in the Empagliflozin group after 1 and 3 months (baseline: 831 ± 156, 1-month 793 ± 150, 3-month 766 ± 127 μm; p < 0.0001), while in the liraglutide group, IMT significantly decreased only after 3 months (baseline 879 ± 120; 1-month 861 ± 163; 3-month 802 ± 114 μm; p < 0.001). In the sitagliptin group, IMT remained almost unchanged (baseline 901 ± 135; 1-month 902 ± 129; 3-month 880 ± 140 μm; p = NS). Conclusions This study is the first to describe a direct effect of empagliflozin on blood viscosity and wall shear stress. Furthermore, IMT was markedly reduced early on in the Empagliflozin group.
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Affiliation(s)
- Concetta Irace
- Department of Health Science, Magna Græcia University, Viale Europa, 88100, Catanzaro, Italy.
| | - Francesco Casciaro
- Department of Health Science, Magna Græcia University, Viale Europa, 88100, Catanzaro, Italy
| | - Faustina Barbara Scavelli
- Department of Experimental and Clinical Medicine, Magna Græcia University, Viale Europa, 88100, Catanzaro, Italy
| | - Rosa Oliverio
- Department of Experimental and Clinical Medicine, Magna Græcia University, Viale Europa, 88100, Catanzaro, Italy
| | - Antonio Cutruzzolà
- Department of Health Science, Magna Græcia University, Viale Europa, 88100, Catanzaro, Italy
| | - Claudio Cortese
- Department of Experimental Medicine and Surgery, Tor Vergata University, Via Orazio Raimondo 18, Rome, Italy
| | - Agostino Gnasso
- Department of Experimental and Clinical Medicine, Magna Græcia University, Viale Europa, 88100, Catanzaro, Italy
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Dewi NA, Aulanni'am A, Sujuti H, Widodo MA, Soeatmadji DW. Mechanism of retinal pericyte migration through Angiopoietin/Tie-2 signaling pathway on diabetic rats. Int J Ophthalmol 2018; 11:375-381. [PMID: 29600169 DOI: 10.18240/ijo.2018.03.05] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Accepted: 01/23/2018] [Indexed: 01/10/2023] Open
Abstract
AIM To investigate the mechanism of pericyte migration through Angiopoietin-2 (Ang-2)/Tie-2 signaling pathway. METHODS We divided the rats into 5 groups. Each diabetic rat model groups injected with Tie-2 inhibitor, ERK1/2 inhibitor, Akt/PKB inhibitor, and DMSO intravitreal. Retinal digest preparation was done to examine the retinal vasculature including pericyte: endothelial ratio, and morphology of pericyte migration. Tie-2, ERK1/2 and Akt/PKB phosporylation were analyzed by confocal laser scanning microscopy. RESULTS There was a correlation between pericyte migration with increasing Ang-2 (P<0.05). Pericyte number reduced by 40% (1:2.4) after 5wk diabetes on diabetic rats. The pericyte: endothelial ratio on group with Tie-2 inhibitor were 1:1.8. The same result shows on group with Akt/PKB inhibition. ERK1/2 inhibitor group shows the best results of pericyte: endothelial ratio (1:1.7). Inhibition on Tie-2 receptor decreased the phosphorylation activity of Tie-2, ERK1/2 and Akt/PKB pathway. ERK1/2 inhibition also decreasing the phosphorylation of Tie-2 and Akt/PKB. But on Akt/PKB inhibition, the phosphorylation of Tie-2 and ERK1/2 were relative the same. CONCLUSION Ang-2 has a role for pericyte migration on diabetic rats through Tie-2 receptor, ERK1/2 and Akt/PKB pathways. ERK1/2 is a dominant pathway based on the ability to supress another pathway activity and decreasing pericyte migration on diabetic rats.
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Affiliation(s)
- Nadia Artha Dewi
- Department of Ophthalmology, Vitreoretinal Subdivision, Faculty of Medicine, Brawijaya University, Malang 65111, Indonesia
| | - Aulanni'am Aulanni'am
- Department of Biochemistry, Faculty of Sciences, Brawijaya University, Malang 65111, Indonesia
| | - Hidayat Sujuti
- Department of Biochemistry, Faculty of Medicine, Brawijaya University, Malang 65111, Indonesia
| | - Muhammad Aris Widodo
- Department of Pharmacology, Faculty of Medicine, Brawijaya University, Malang 65111, Indonesia
| | - Djoko Wahono Soeatmadji
- Department of Endocrinology, Faculty of Medicine, Brawijaya University, Malang 65111, Indonesia
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Electrofluidic Circuit-Based Microfluidic Viscometer for Analysis of Newtonian and Non-Newtonian Liquids under Different Temperatures. Anal Chem 2018; 90:2317-2325. [PMID: 29293313 DOI: 10.1021/acs.analchem.7b04779] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This paper reports a microfluidic viscometer with an integrated pressure sensor based on electrofluidic circuits, which are electrical circuits constructed by ionic liquid-filled microfluidic channels. The electrofluidic circuit provides a pressure-sensing scheme with great long-term and thermal stability. The viscosity of the tested fluidic sample is estimated by its flow resistance, which is a function of pressure drop, flow rate, and the geometry of the microfluidic channel. The viscometer can be exploited to measure viscosity of either Newtonian or non-Newtonian power-law fluid under various shear rates (3-500 1/s) and temperatures (4-70 °C) with small sample volume (less than 400 μL). The developed sensor-integrated microfluidic viscometer is made of poly(dimethylsiloxane) (PDMS) with transparent electrofluidic circuit, which makes it feasible to simultaneously image samples under tests. In addition, the entire device is disposable to prevent cross-contamination between samples, which is desired for various chemical and biomedical applications. In the experiments, viscosities of Newtonian fluids, glycerol water solutions with different concentrations and a mixture of pyrogallol and sodium hydroxide (NaOH), and non-Newtonian fluids, xanthan gum solutions and human blood samples, have been characterized. The results demonstrate that the developed microfluidic viscometer provides a convenient and useful platform for practical viscosity characterization of fluidic samples for a wide variety of applications.
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Marini MA, Fiorentino TV, Andreozzi F, Mannino GC, Perticone M, Sciacqua A, Perticone F, Sesti G. Elevated 1-h post-challenge plasma glucose levels in subjects with normal glucose tolerance or impaired glucose tolerance are associated with whole blood viscosity. Acta Diabetol 2017; 54:775-784. [PMID: 28577138 DOI: 10.1007/s00592-017-1004-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 05/18/2017] [Indexed: 01/04/2023]
Abstract
AIM It has been suggested that glucose levels ≥155 mg/dl at 1-h during an oral glucose tolerance test (OGTT) may predict development of type 2 diabetes and cardiovascular events among adults with normal glucose tolerance (NGT 1 h-high). Studies showed a link between increased blood viscosity and type 2 diabetes. However, whether blood viscosity is associated with dysglycemic conditions such as NGT 1 h-high, impaired glucose tolerance (IGT) or impaired fasting glucose (IFG) is unsettled. METHODS 1723 non-diabetic adults underwent biochemical evaluation and OGTT. A validated formula based on hematocrit and total plasma proteins was employed to estimate whole blood viscosity. Subjects were categorized into NGT with 1 h glucose <155 mg/dL (NGT-1 h-low), NGT-1 h-high, IFG and/or IGT. RESULTS Hematocrit and blood viscosity values appeared significantly higher in individuals with NGT 1 h-high, IFG and/or IGT as compared to NGT 1 h-low subjects. Blood viscosity was significantly correlated with age, waist circumference, blood pressure, HbA1c, fasting, 1- and 2-h post-challenge insulin levels, total cholesterol and low-density lipoprotein, triglycerides, fibrinogen, white blood cell, and inversely correlated with high-density lipoprotein and insulin sensitivity. Of the four glycemic parameters, 1-h post-challenge glucose showed the strongest correlation with blood viscosity (β = 0.158, P < 0.0001) in a multivariate regression analysis model including several atherosclerosis risk factors. CONCLUSIONS Our results demonstrate a positive relationship between blood viscosity and 1-h post-challenge plasma glucose. They also suggest that a subgroup of NGT individuals with 1-h post-challenge plasma >155 mg/dl have increased blood viscosity comparable to that observed in subjects with IFG and/or IGT.
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Affiliation(s)
| | - Teresa Vanessa Fiorentino
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Francesco Andreozzi
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Gaia Chiara Mannino
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Maria Perticone
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Angela Sciacqua
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Francesco Perticone
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Giorgio Sesti
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100, Catanzaro, Italy.
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Marini MA, Fiorentino TV, Andreozzi F, Mannino GC, Succurro E, Sciacqua A, Perticone F, Sesti G. Hemorheological alterations in adults with prediabetes identified by hemoglobin A1c levels. Nutr Metab Cardiovasc Dis 2017; 27:601-608. [PMID: 28511905 DOI: 10.1016/j.numecd.2017.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 04/11/2017] [Accepted: 04/11/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND AIMS A link between increased blood viscosity and type 2 diabetes has been previously reported. Herein, we investigated the association of blood viscosity with prediabetes, identified by glycated hemoglobin A1c (HbA1c) according to the new American Diabetes Association criteria, and subclinical atherosclerosis. METHODS AND RESULTS The study cohort includes 1136 non-diabetic adults submitted to anthropometrical evaluation, an oral glucose tolerance test and ultrasound measurement of carotid intima-media thickness (IMT). Whole blood viscosity was estimated using a validated formula based on hematocrit and total plasma proteins. After adjusting for age, and gender, individuals with HbA1c-defined prediabetes (HbA1c 5.7-6.4% [39-47 mmol/mol]) exhibited significantly higher values of hematocrit, and predicted blood viscosity as compared with controls. Increased levels of IMT were observed in subjects with HbA1c-defined prediabetes in comparison to controls. Predicted blood viscosity was positively correlated with age, waist circumference, blood pressure, cholesterol, triglycerides, fibrinogen, white blood cell, HbA1c, fasting and 2-h post-load glucose levels, fasting insulin, IMT and inversely correlated with HDL and Matsuda index of insulin sensitivity. Of the three glycemic parameters, i.e. HbA1c, fasting and 2-h post-load glucose, only HbA1c showed a significant correlation with predicted blood viscosity (β = 0.054, P = 0.04) in a multivariate regression analysis model including multiple atherosclerosis risk factors. CONCLUSION The study shows that individuals with HbA1c-defined prediabetes have increased predicted blood viscosity and IMT. The HbA1c criterion may be helpful to capture individuals with an increased risk of diabetes and cardiovascular disease who may benefit from an intensive lifestyle intervention.
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Affiliation(s)
- M A Marini
- Department of Systems Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
| | - T V Fiorentino
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
| | - F Andreozzi
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
| | - G C Mannino
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
| | - E Succurro
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
| | - A Sciacqua
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
| | - F Perticone
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
| | - G Sesti
- Department of Medical and Surgical Sciences, University Magna-Græcia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy.
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Tripolino C, Irace C, Carallo C, De Franceschi MS, Scavelli FB, Gnasso A. Red blood cell distribution width predicts two-hours plasma glucose levels during OGTT. Clin Hemorheol Microcirc 2016; 62:63-9. [PMID: 26410856 DOI: 10.3233/ch-151947] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Red blood cell distribution width (RDW) is a numerical measure, reported as part of a standard complete blood count, usually employed for differential diagnosis of anemic state. Some lines of evidence demonstrate that RDW associates with type 2 diabetes incidence and its complications. To further explore the role of RDW as predictor of abnormal glucose metabolism, we have analyzed the relationship between RDW and 2-hours plasma glucose concentration during an oral glucose tolerance test (OGTT). METHODS Forty-five outpatients were enrolled for the present study. Participants underwent 75 g OGTT and measurements of hematological parameters. Cardiovascular disease risk factors (blood pressure, blood lipids, cigarette smoking, obesity) were evaluated by routine methods. RESULTS In simple regression analysis 2-hours post-load glucose was directly associated with age (r = 0.36, p = 0.01), fasting glucose levels (r = 0.40, p = 0.002) and RDW (r = 0.31, p = 0.037). In multiple regression analysis fasting glucose, RDW, triglycerides and age significantly and independently predicted 2-hours plasma glucose (p < 0.01 for all coefficients). CONCLUSION The present findings demonstrate that RDW associates with plasma glucose concentration after a 75-g oral glucose tolerance test. Our results highlight the role of RDW as predictor of glucose metabolism disturbance.
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De Pretto LR, Yoshimura TM, Ribeiro MS, Zanardi de Freitas A. Optical coherence tomography for blood glucose monitoring in vitro through spatial and temporal approaches. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:86007. [PMID: 27533444 DOI: 10.1117/1.jbo.21.8.086007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 07/25/2016] [Indexed: 05/18/2023]
Abstract
As diabetes causes millions of deaths worldwide every year, new methods for blood glucose monitoring are in demand. Noninvasive approaches may increase patient adherence to treatment while reducing costs, and optical coherence tomography (OCT) may be a feasible alternative to current invasive diagnostics. This study presents two methods for blood sugar monitoring with OCT in vitro. The first, based on spatial statistics, exploits changes in the light total attenuation coefficient caused by different concentrations of glucose in the sample using a 930-nm commercial OCT system. The second, based on temporal analysis, calculates differences in the decorrelation time of the speckle pattern in the OCT signal due to blood viscosity variations with the addition of glucose with data acquired by a custom built Swept Source 1325-nm OCT system. Samples consisted of heparinized mouse blood, phosphate buffer saline, and glucose. Additionally, further samples were prepared by diluting mouse blood with isotonic saline solution to verify the effect of higher multiple scattering components on the ability of the methods to differentiate glucose levels. Our results suggest a direct relationship between glucose concentration and both decorrelation rate and attenuation coefficient, with our systems being able to detect changes of 65 mg/dL in glucose concentration.
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Affiliation(s)
- Lucas Ramos De Pretto
- Nuclear and Energy Research Institute, Av. Professor Lineu Prestes, 2242, São Paulo, SP, 05508-000, BrazilbUniversity of São Paulo, Postgraduate Program in Nuclear Technology, Av. Professor Lineu Prestes, 2242, São Paulo, SP, 05508-000, Brazil
| | - Tania Mateus Yoshimura
- Nuclear and Energy Research Institute, Av. Professor Lineu Prestes, 2242, São Paulo, SP, 05508-000, BrazilbUniversity of São Paulo, Postgraduate Program in Nuclear Technology, Av. Professor Lineu Prestes, 2242, São Paulo, SP, 05508-000, Brazil
| | - Martha Simões Ribeiro
- Nuclear and Energy Research Institute, Av. Professor Lineu Prestes, 2242, São Paulo, SP, 05508-000, Brazil
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Kang YJ, Ha YR, Lee SJ. Deformability measurement of red blood cells using a microfluidic channel array and an air cavity in a driving syringe with high throughput and precise detection of subpopulations. Analyst 2015; 141:319-30. [PMID: 26616556 DOI: 10.1039/c5an01988e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Red blood cell (RBC) deformability has been considered a potential biomarker for monitoring pathological disorders. High throughput and detection of subpopulations in RBCs are essential in the measurement of RBC deformability. In this paper, we propose a new method to measure RBC deformability by evaluating temporal variations in the average velocity of blood flow and image intensity of successively clogged RBCs in the microfluidic channel array for specific time durations. In addition, to effectively detect differences in subpopulations of RBCs, an air compliance effect is employed by adding an air cavity into a disposable syringe. The syringe was equally filled with a blood sample (V(blood) = 0.3 mL, hematocrit = 50%) and air (V(air) = 0.3 mL). Owing to the air compliance effect, blood flow in the microfluidic device behaved transiently depending on the fluidic resistance in the microfluidic device. Based on the transient behaviors of blood flows, the deformability of RBCs is quantified by evaluating three representative parameters, namely, minimum value of the average velocity of blood flow, clogging index, and delivered blood volume. The proposed method was applied to measure the deformability of blood samples consisting of homogeneous RBCs fixed with four different concentrations of glutaraldehyde solution (0%-0.23%). The proposed method was also employed to evaluate the deformability of blood samples partially mixed with normal RBCs and hardened RBCs. Thereafter, the deformability of RBCs infected by human malaria parasite Plasmodium falciparum was measured. As a result, the three parameters significantly varied, depending on the degree of deformability. In addition, the deformability measurement of blood samples was successfully completed in a short time (∼10 min). Therefore, the proposed method has significant potential in deformability measurement of blood samples containing hematological diseases with high throughput and precise detection of subpopulations in RBCs.
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Affiliation(s)
- Yang Jun Kang
- Department of Mechanical Engineering, Chosun University, Gwangju, Republic of Korea
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Pretorius E, Kell DB. Diagnostic morphology: biophysical indicators for iron-driven inflammatory diseases. Integr Biol (Camb) 2014; 6:486-510. [PMID: 24714688 DOI: 10.1039/c4ib00025k] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Most non-communicable diseases involve inflammatory changes in one or more vascular systems, and there is considerable evidence that unliganded iron plays major roles in this. Most studies concentrate on biochemical changes, but there are important biophysical correlates. Here we summarize recent microscopy-based observations to the effect that iron can have major effects on erythrocyte morphology, on erythrocyte deformability and on both fibrinogen polymerization and the consequent structure of the fibrin clots formed, each of which contributes significantly and negatively to such diseases. We highlight in particular type 2 diabetes mellitus, ischemic thrombotic stroke, systemic lupus erythematosus, hereditary hemochromatosis and Alzheimer's disease, while recognizing that many other diseases have co-morbidities (and similar causes). Inflammatory biomarkers such as ferritin and fibrinogen are themselves inflammatory, creating a positive feedback that exacerbates disease progression. The biophysical correlates we describe may provide novel, inexpensive and useful biomarkers of the therapeutic benefits of successful treatments.
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Affiliation(s)
- Etheresia Pretorius
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Private Bag x323, Arcadia 0007, South Africa.
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