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Touma Y, Ichikawa M, Kishi M, Yokota T, Fujisawa A. Development of a Semi-Dry Method for Measuring Drug Permeation into Skin Using an Electric Facial Care Device and Iontophoresis. Skin Pharmacol Physiol 2024; 36:278-287. [PMID: 38368874 DOI: 10.1159/000536500] [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: 09/07/2023] [Accepted: 01/25/2024] [Indexed: 02/20/2024]
Abstract
INTRODUCTION Percutaneous drug delivery systems are attractive not only as a therapeutic strategy but also for cosmetic treatment. Iontophoresis is a well-recognized method for promoting transdermal absorption of ionized compounds. Franz cells are generally used to estimate drug permeation of skin by iontophoresis. However, methods using Franz cells are less versatile; for instance, the method is unsuited for use with a portable electric facial care device having a working probe of a certain size and weight. In this study, we constructed a semi-dry apparatus for use with an electric facial care device. METHODS The apparatus has a multilayer structure consisting of mouse skin and 3 filter papers, modeled after the Franz cell. The skin permeation of the drug edaravone (3-methyl-1-phenyl-2-pyrazolin-5-one) was then measured using this apparatus. RESULTS Edaravone permeation depended on working time, drug concentration, and ionization ratio of edaravone when iontophoresis was carried out with an electric facial care device. Furthermore, glycyrrhizic acid, α-tocopheryl phosphate, retinoic acid, and ascorbyl palmitate, which are recognized as functional cosmetic materials, also permeated the skin by applying iontophoresis with the device. CONCLUSION These results suggest that the developed measuring apparatus is applicable for use with a portable electric facial care device and that iontophoresis using a portable electric facial care device is potentially useful in the cosmetic field.
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Affiliation(s)
- Yumi Touma
- School of Bioscience and Biotechnology, Tokyo University of Technology, Hachioji, Tokyo, Japan
| | | | | | | | - Akio Fujisawa
- School of Bioscience and Biotechnology, Tokyo University of Technology, Hachioji, Tokyo, Japan
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Gerganov G, Georgiev T, Dimova M, Shivacheva T. Vascular effects of biologic and targeted synthetic antirheumatic drugs approved for rheumatoid arthritis: a systematic review. Clin Rheumatol 2023; 42:2651-2676. [PMID: 36991244 DOI: 10.1007/s10067-023-06587-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/20/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023]
Abstract
BACKGROUND Rheumatoid arthritis (RA) increases the risk of cardiovascular disease (CVD), with inflammation playing a key role. Biologic and targeted synthetic drugs used to treat RA can induce systemic immunomodulation and may have pleiotropic effects on vascular function, making it crucial to investigate their impact on CVD risk in RA patients. METHODS A systematic review of the literature was conducted to investigate the impact of biologic and targeted synthetic treatments approved for RA on various cardiovascular markers, including endothelial function, arterial stiffness, and subclinical atherosclerosis. Our analysis included a search of the MedLine (via PubMed) and Web of Science databases using a pre-determined search strategy. We conducted a narrative synthesis of the included studies due to heterogeneity in study design and outcome measures. RESULTS From an initial pool of 647 records, we excluded 327 studies based on their titles and abstracts, and we selected 182 studies for final examination. Ultimately, 58 articles met our inclusion criteria and were included in our systematic review. Our analysis of these studies revealed a positive effect of biologic and targeted synthetic therapies on vascular dysfunction associated with RA. However, the impact of these treatments on subclinical atherosclerosis was inconsistent. CONCLUSION Overall, our systematic review provides important insights into the potential cardiovascular benefits of biologic and targeted synthetic treatments for RA by a still unknown mechanism. These findings can inform clinical practice and contribute to our understanding of their possible effects on early vascular pathology. Key Points • Great heterogeneity of methods are used to evaluate the endothelial function and arterial stiffness in patients with RA on biologic and targeted synthetic antirheumatic drugs. • Most studies have shown a considerable improvement in endothelial function and arterial stiffness with TNFi, despite some studies reporting only transient or no improvement. • Anakinra and tocilizumab may have a beneficial effect on vascular function and endothelial injury, as indicated by increased FMD, coronary flow reserve, and reduced levels of biomarkers of endothelial function, while the overall impact of JAKi and rituximab remains inconclusive based on the reviewed studies. • To fully comprehend the distinctions between biologic therapies, more long-term, well-designed clinical trials are necessary using a homogeneous methodology.
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Affiliation(s)
- Georgi Gerganov
- Department of Propedeutics of Internal Medicine, Faculty of Medicine, Medical University - Varna, 9002, Varna, Bulgaria
- Clinic of Rheumatology, University Hospital St. Marina - Varna, 9010, Varna, Bulgaria
| | - Tsvetoslav Georgiev
- Clinic of Rheumatology, University Hospital St. Marina - Varna, 9010, Varna, Bulgaria.
- First Department of Internal Medicine, Faculty of Medicine, Medical University - Varna, 9002, Varna, Bulgaria.
| | - Maria Dimova
- Department of Propedeutics of Internal Medicine, Faculty of Medicine, Medical University - Varna, 9002, Varna, Bulgaria
- Clinic of Internal Medicine, University Hospital St. Marina - Varna, 9010, Varna, Bulgaria
| | - Tanya Shivacheva
- Clinic of Rheumatology, University Hospital St. Marina - Varna, 9010, Varna, Bulgaria
- First Department of Internal Medicine, Faculty of Medicine, Medical University - Varna, 9002, Varna, Bulgaria
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Guven G, Dijkstra A, Kuijper TM, Trommel N, van Baar ME, Topeli A, Ince C, van der Vlies CH. Comparison of laser speckle contrast imaging with laser Doppler perfusion imaging for tissue perfusion measurement. Microcirculation 2023; 30:e12795. [PMID: 36524297 PMCID: PMC10078364 DOI: 10.1111/micc.12795] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 11/29/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Laser-based tissue perfusion monitoring techniques have been increasingly used in animal and human research to assess blood flow. However, these techniques use arbitrary units, and knowledge about their comparability is scarce. This study aimed to model the relationship between laser speckle contrast imaging (LSCI) and laser Doppler perfusion imaging (LDPI), for measuring tissue perfusion over a wide range of blood flux values. METHODS Fifteen healthy volunteers (53% female, median age 29 [IQR 22-40] years) were enrolled in this study. We performed iontophoresis with sodium nitroprusside on the forearm to induce regional vasodilation to increase skin blood flux. Besides, a stepwise vascular occlusion was applied on the contralateral upper arm to reduce blood flux. Both techniques were compared using a linear mixed model analysis. RESULTS Baseline blood flux values measured by LSCI were 33 ± 6.5 arbitrary unit (AU) (Coefficient of variation [CV] = 20%) and by LDPI 60 ± 11.5 AU (CV = 19%). At the end of the iontophoresis protocol, the regional blood flux increased to 724 ± 412% and 259 ± 87% of baseline measured by LDPI and LSCI, respectively. On the other hand, during the stepwise vascular occlusion test, the blood flux reduced to 212 ± 40% and 412 ± 177% of its baseline at LDPI and LSCI, respectively. A strong correlation was found between the LSCI and LDPI instruments at increased blood flux with respect to baseline skin blood flux; however, the correlation was weak at reduced blood flux with respect to baseline. DISCUSSION LSCI and LDPI instruments are highly linear for blood flux higher than baseline skin blood flux; however, the correlation decreased for blood flux lower than baseline. This study's findings could be a basis for using LSCI in specific patient populations, such as burn care.
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Affiliation(s)
- Goksel Guven
- Department of Intensive Care, Erasmus MC, Rotterdam, The Netherlands.,Departments of Trauma and Burn Surgery, Maasstad Ziekenhuis, Rotterdam, The Netherlands.,Department of Internal Medicine, Division of Intensive Care, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Annemieke Dijkstra
- Departments of Trauma and Burn Surgery, Maasstad Ziekenhuis, Rotterdam, The Netherlands
| | | | - Nicole Trommel
- Departments of Trauma and Burn Surgery, Maasstad Ziekenhuis, Rotterdam, The Netherlands
| | | | - Arzu Topeli
- Department of Internal Medicine, Division of Intensive Care, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Can Ince
- Department of Intensive Care, Erasmus MC, Rotterdam, The Netherlands
| | - Cornelis Hendrik van der Vlies
- Departments of Trauma and Burn Surgery, Maasstad Ziekenhuis, Rotterdam, The Netherlands.,Trauma Research Unit Department of Surgery, Erasmus MC, Rotterdam, The Netherlands
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Le Faucheur A, Jéhannin P, Chanteau A, Blanc-Petitjean P, Donnelly A, Hoffmann C, Henni S, Bura-Rivière A, Kaladji A, Lanéelle D, Mahé G. A Multicenter, Investigator-Blinded, Randomized Controlled Trial to Assess the Efficacy of Calf Neuromuscular Electrical Stimulation Program on Walking Performance in Peripheral Artery Disease: The ELECTRO-PAD Study Protocol. J Clin Med 2022; 11:jcm11247261. [PMID: 36555879 PMCID: PMC9784261 DOI: 10.3390/jcm11247261] [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: 10/31/2022] [Revised: 11/23/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
This paper describes a currently on-going multicenter, randomized controlled trial designed to assess the efficacy of calf neuromuscular electrical stimulation (NMES) on changes in maximal walking distance in people with lower extremity peripheral artery disease (PAD), compared with a non-intervention control-group. This study (NCT03795103) encompasses five participating centers in France. PAD participants with a predominant claudication at the calf level and a maximal treadmill walking distance ≤300 m are randomized into one of the two groups: NMES group or Control group. The NMES program consists of a 12-week program of electrical stimulations at the calf-muscle level. The primary outcome of the study is the change in maximal treadmill walking distance at 12 weeks. Main secondary outcomes include changes in the pain-free treadmill walking distance; 6 min total walking distance; global positioning system (GPS)-measured outdoor walking capacity; daily physical activity level by accelerometry; self-reported walking impairment; self-reported quality of life; ankle-brachial index; and skin microvascular function, both at the forearm and calf levels. Recruitment started in September 2019 and data collection is expected to end in November 2022.
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Affiliation(s)
- Alexis Le Faucheur
- Clinical Investigation Center, INSERM, CIC 1414, F-35033 Rennes, France
- Univ. Rennes, M2S—EA 7470, F-35000 Rennes, France
| | - Pierre Jéhannin
- Clinical Investigation Center, INSERM, CIC 1414, F-35033 Rennes, France
- Univ. Rennes, F-35000 Rennes, France
| | | | | | - Alan Donnelly
- PESS Department, Health Research Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | | | - Samir Henni
- Vascular Medicine Department, CHU Angers, F-49000 Angers, France
- UMR CNRS 6015, INSERM 1083, Univ. Angers, F-49000 Angers, France
| | | | - Adrien Kaladji
- Vascular Surgery Unit, CHU Rennes, University Hospital, F-35033 Rennes, France
| | - Damien Lanéelle
- Vascular Medicine Unit, CHU Caen-Normandie, University Hospital, F-14033 Caen, France
| | - Guillaume Mahé
- Clinical Investigation Center, INSERM, CIC 1414, F-35033 Rennes, France
- Univ. Rennes, M2S—EA 7470, F-35000 Rennes, France
- Univ. Rennes, F-35000 Rennes, France
- Vascular Medicine Unit, CHU Rennes, University Hospital, F-35033 Rennes, France
- Correspondence: ; Tel.: +33-299-289-672
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Tikhonova IV, Grinevich AA, Tankanag AV, Safronova VG. Skin Microhemodynamics and Mechanisms of Its Regulation in Type 2 Diabetes Mellitus. Biophysics (Nagoya-shi) 2022; 67:647-659. [PMID: 36281313 PMCID: PMC9581453 DOI: 10.1134/s0006350922040200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 11/07/2022] Open
Abstract
The review presents modern ideas about peripheral microhemodynamics, approaches to the ana-lysis of skin blood flow oscillations and their diagnostic significance. Disorders of skin microhemodynamics in type 2 diabetes mellitus (DM) and the possibility of their interpretation from the standpoint of external and internal interactions between systems of skin blood flow regulation, based on a comparison of couplings in normal and pathological conditions, including models of pathologies on animals, are considered. The factors and mechanisms of vasomotor regulation, among them receptors and signaling events in endothelial and smooth muscle cells considered as models of microvessels are discussed. Attention was drawn to the disturbance of Ca2+-dependent regulation of coupling between vascular cells and NO-dependent regulation of vasodilation in diabetes mellitus. The main mechanisms of insulin resistance in type 2 DM are considered to be a defect in the number of insulin receptors and impaired signal transduction from the receptor to phosphatidylinositol-3-kinase and downstream targets. Reactive oxygen species plays an important role in vascular dysfunction in hyperglycemia. It is assumed that the considered molecular and cellular mechanisms of microhemodynamics regulation are involved in the formation of skin blood flow oscillations. Parameters of skin blood microcirculation can be used as diagnostic and prognostic markers for assessing the state of the body.
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Affiliation(s)
- I. V. Tikhonova
- Institute of Cell Biophysics, Russian Academy of Sciences, 142290 Pushchino, Moscow oblast Russia
| | - A. A. Grinevich
- Institute of Cell Biophysics, Russian Academy of Sciences, 142290 Pushchino, Moscow oblast Russia
| | - A. V. Tankanag
- Institute of Cell Biophysics, Russian Academy of Sciences, 142290 Pushchino, Moscow oblast Russia
| | - V. G. Safronova
- Institute of Cell Biophysics, Russian Academy of Sciences, 142290 Pushchino, Moscow oblast Russia
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Guigui A, Loader J, Bellier A, Roustit M. Commentary: Multiple laser doppler flowmetry probes increase the reproducibility of skin blood flow measurements. Front Physiol 2022; 13:1025905. [PMID: 36324305 PMCID: PMC9619133 DOI: 10.3389/fphys.2022.1025905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/06/2022] [Indexed: 12/03/2022] Open
Affiliation(s)
- Alicia Guigui
- University Grenoble Alpes, Inserm U1300, Grenoble, France
- Grenoble University Hospital, Inserm CIC1406, University Grenoble Alpes, Grenoble, France
- *Correspondence: Alicia Guigui,
| | - Jordan Loader
- University Grenoble Alpes, Inserm U1300, Grenoble, France
- Grenoble University Hospital, Inserm CIC1406, University Grenoble Alpes, Grenoble, France
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Alexandre Bellier
- Grenoble University Hospital, Inserm CIC1406, University Grenoble Alpes, Grenoble, France
- Computational and Mathematical Biology Team, TIMC-IMAG UMR 5525, CNRS, University Grenoble Alpes, Grenoble, France
| | - Matthieu Roustit
- University Grenoble Alpes, Inserm U1300, Grenoble, France
- Grenoble University Hospital, Inserm CIC1406, University Grenoble Alpes, Grenoble, France
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Luck JC, Kunselman AR, Herr MD, Blaha CA, Sinoway LI, Cui J. Multiple Laser Doppler Flowmetry Probes Increase the Reproducibility of Skin Blood Flow Measurements. Front Physiol 2022; 13:876633. [PMID: 35711302 PMCID: PMC9197318 DOI: 10.3389/fphys.2022.876633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/11/2022] [Indexed: 01/18/2023] Open
Abstract
Cutaneous microcirculatory perfusion is commonly measured using laser Doppler flowmetry (LDF) probes, which provide a continuous, non-invasive quantification of skin blood flow (SkBF). However, inhomogeneities in the skin’s microvasculature density contribute to a decrease in reproducibility whenever an LDF probe is removed and replaced, as is the case during pre- and post-intervention or between-day measurements. Therefore, this study aimed to determine whether increasing the total number of individual LDF probes in a localized area improves the reproducibility of the measurement. Seven laser Doppler probes were secured in a custom-made acrylic holder designed to attach to the skin’s surface easily. SkBF, local skin temperature (Tsk), and blood pressure (BP) were assessed in 11 participants (6 M, 5 F, 42 ± 15 years). SkBF and Tsk were measured from the dorsal forearm (arm trial) for 5 min. Next, the multi-laser device was moved to the lateral side of the calf (leg trial), and measurements were obtained for 5 min. Each arm and leg trial was cyclically repeated three times, and all trials were separated by intermissions lasting 10–15 min. The average SkBF and the cutaneous vascular conductance (CVC) from all possible LDF probe combinations were not statistically different across the three arm and leg trials. Two-way mixed-effects models with absolute agreement were used to compute the intraclass correlation coefficient (ICC) for CVC, and the minimum ICC increased with the addition of LDF probes. The ICC of the average CVC from seven LDF probes was 0.96 between the arm trials and 0.91 between the leg trials, which suggests that there is excellent reliability and little difference between trials following the removal and replacement of the device. Moreover, all individual ICC values from ≥3 LDF probe combinations were greater than 0.70 (i.e., good reliability). These data suggest that SkBF measurements with multiple laser Doppler probes in a custom-made holder have excellent reproducibility after replacing the probes within the same participant. Therefore, this application could provide more reproducible assessments between repeated measurements (e.g., before and after exercise or clinical procedures) where the LDF probes must be removed and replaced within the same location.
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Affiliation(s)
- J Carter Luck
- Penn State Health Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Allen R Kunselman
- Department of Public Health Sciences, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Michael D Herr
- Penn State Health Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Cheryl A Blaha
- Penn State Health Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Lawrence I Sinoway
- Penn State Health Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Jian Cui
- Penn State Health Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, PA, United States
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Couturier A, Bouvet R, Cracowski JL, Roustit M. Reproducibility of high-resolution laser speckle contrast imaging approaches to assess cutaneous microcirculation for wound healing monitoring in mice. Microvasc Res 2022; 141:104319. [DOI: 10.1016/j.mvr.2022.104319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 12/15/2022]
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Lindstedt S, Wlosinska M, Nilsson AC, Hlebowicz J, Fakhro M, Sheikh R. Successful improved peripheral tissue perfusion was seen in patients with atherosclerosis after 12 months of treatment with aged garlic extract. Int Wound J 2021; 18:681-691. [PMID: 33590955 PMCID: PMC8450802 DOI: 10.1111/iwj.13570] [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: 12/30/2020] [Accepted: 02/01/2021] [Indexed: 12/30/2022] Open
Abstract
Patients with arteriolosclerosis have impaired microvascular perfusion leading to impaired wound healing. Aged garlic extract has shown to have a positive impact on vascular elasticity. The present study aimed to assess the effect of long‐term treatment with AGE on peripheral tissue perfusion in patients with confirmed atherosclerosis. Ninety three patients with a CT‐scan confirmed coronary artery arteriolosclerosis were randomised in a double‐blind manner to placebo or 2400 mg AGE daily for 1 year. Peripheral tissue perfusion was evaluated at 0‐ and 12‐months using Laser Speckle Contrast Imaging. Measurement of post occlusive reactive hyperemia (PORH) and cutaneous vascular conductance (CVC) using acetylcholine iontophoresis (Ach) was conducted. After 12 months a significant increase of 21.6% (95% CI 3.2%‐40.0%, P < .05) was seen in the relative change of PORH in the AGE compared with the placebo group. The same response was seen for CVC and Ach with an increase of 21.4% (95% CI 3.4%‐39.4%, P < .05) in the AGE group compared with the placebo group. Aged garlic extract regenerated peripheral tissue perfusion and increase microcirculation in patients with arteriolosclerosis. Adequate peripheral tissue perfusion and tissue oxygen tension are important prerequisites for successful tissue repair. Restored microcirculation in patients could hypothetically facilitate wound healing.
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Affiliation(s)
- Sandra Lindstedt
- Department of Cardiothoracic Surgery and Transplantation, Clinical Science, Lund University, Skane University Hospital, Lund, Sweden
| | - Martiné Wlosinska
- Department of Cardiothoracic Surgery and Transplantation, Clinical Science, Lund University, Skane University Hospital, Lund, Sweden
| | - Ann-Christin Nilsson
- Department of Cardiothoracic Surgery and Transplantation, Clinical Science, Lund University, Skane University Hospital, Lund, Sweden
| | - Joanna Hlebowicz
- Department of Cardiology, Clinical Sciences, Lund University, Skane University Hospital, Lund, Sweden
| | - Mohammed Fakhro
- Department of Cardiothoracic Surgery and Transplantation, Clinical Science, Lund University, Skane University Hospital, Lund, Sweden
| | - Rafi Sheikh
- Department of Ophthalmology, Clinical Sciences, Lund University, Skane University Hospital, Lund, Sweden
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Comparison of laser speckle contrast imaging and laser-Doppler fluxmetry in boys and men. Microvasc Res 2020; 128:103927. [DOI: 10.1016/j.mvr.2019.103927] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 08/14/2019] [Accepted: 09/15/2019] [Indexed: 11/22/2022]
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Zandstra H, van Montfoort APA, Dumoulin JCM, Zimmermann LJI, Touwslager RNH. Increased blood pressure and impaired endothelial function after accelerated growth in IVF/ICSI children. Hum Reprod Open 2020; 2020:hoz037. [PMID: 31922033 PMCID: PMC6946007 DOI: 10.1093/hropen/hoz037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 09/05/2019] [Accepted: 10/02/2019] [Indexed: 02/06/2023] Open
Abstract
STUDY QUESTION What is the effect of growth velocity (height and weight) in early infancy on metabolic end-points and endothelial function in children born after ART? SUMMARY ANSWER Neonatal, infant and childhood growth is positively related to blood pressure in 9-year-old IVF/ICSI offspring, while growth in childhood was negatively associated with endothelial function. WHAT IS KNOWN ALREADY Offspring of pregnancies conceived after ART are at risk for later cardiometabolic risk factors. It is well established that early growth is related to numerous later cardiometabolic risk factors such as high blood pressure. This concept is known as the Developmental Origin of Health and Disease theory. STUDY DESIGN SIZE DURATION The relation between early growth and later cardiometabolic risk profile was studied in the MEDIUM-KIDS study, a prospective observational cohort study in children born after an IVF/ICSI treatment. In 131 children (48.1% males) at the average age of 9.4 years, cardiometabolic outcomes were assessed and growth data from birth until age 9 years were collected from child welfare centers. PARTICIPANTS/MATERIALS SETTINGS METHODS The following cardiometabolic outcomes were assessed: blood pressure, skinfolds, lipid spectrum, hair cortisone and glucose and insulin levels. Data on maximum skin perfusion after transdermal delivery of acetylcholine as a measure of endothelial function were collected.Growth charts were obtained electronically from child welfare centers, which offer free consultations and vaccinations to all Dutch children. At these centers, height and weight are recorded at predefined ages. Growth was defined as z-score difference in weight between two time points. Multivariable linear regression analysis was used to model the relation between growth and cardiometabolic outcomes. The following growth windows were -studied simultaneously in each model: 0-1 month, 1-3 months, 3-6 months, 6-11 months, 11-24 months and 2-6 years. The model was adjusted for height growth in all intervals except for 0-1 month. MAIN RESULTS AND THE ROLE OF CHANCE In multivariable linear regression analyses, multiple growth windows were positively associated with blood pressure, for example growth from 2-6 years was significantly related to systolic blood pressure: B = 4.13, P = 0.005. Maximum skin perfusion after acetylcholine was negatively associated with height-adjusted weight gain from 2 to 6 years: B = -0.09 (log scale), P = 0.03. Several growth windows (weight 1-3 months, 3-6 months, 6-11 months, 11-24 months, 2-6 years) were positively linked with total adiposity. Lipids, glucose tolerance indices and cortisone were not related to growth. LIMITATIONS REASONS FOR CAUTION This study is of modest size and of observational nature, and we did not include a control group. Therefore, we cannot assess whether the observed associations are causal. It is also not possible to analyze if our observations are specific for, or exacerbated in, the ART population. Ideally, a control group of naturally conceived siblings of IVF/ICSI children should simultaneously be studied to address this limitation and to assess the impact of the ART procedure without the influence of parental (subfertility) characteristics. WIDER IMPLICATIONS OF THE FINDINGS The results of this study contribute to our understanding of the reported increased risk for hypertension in ART offspring. We speculate that early, accelerated growth may be involved in the reported increased risk for hypertension in ART offspring, with endothelial dysfunction as a possible underlying mechanism. However, additional research into the mechanisms involved is required. STUDY FUNDING/COMPETING INTERESTS The study was financially supported by the March of Dimes, grant number #6-FY13-153. The sponsor of the study had no role in study design, data collection, data analysis, data interpretation or writing of the paper. The authors have no conflict of interest to declare. TRIAL REGISTRATION NUMBER NTR4220.
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Affiliation(s)
- H Zandstra
- Department of Obstetrics and Gynaecology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - A P A van Montfoort
- Department of Obstetrics and Gynaecology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - J C M Dumoulin
- Department of Obstetrics and Gynaecology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - L J I Zimmermann
- Department of Pediatrics, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - R N H Touwslager
- Department of Pediatrics, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
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Kim J, Franke WD, Lang JA. Improved endothelial-dependent and endothelial-independent skin vasodilator responses following remote ischemic preconditioning. Am J Physiol Heart Circ Physiol 2020; 318:H110-H115. [PMID: 31774694 DOI: 10.1152/ajpheart.00467.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
One week of daily remote ischemic preconditioning (RIPC) improves cutaneous vasodilatory (VD) function. However, the underlying mechanisms and the number of sessions needed to optimize this adaptive response remain unclear. We hypothesized that the responses to localized heating of the skin will be greater after 2 wk as opposed to 1 wk of RIPC. Furthermore, 2 wk of repeated RIPC will augment cutaneous VD responses to thermal and pharmacological stimuli. In methods, twenty-four participants (24 ± 2 yr; 13 men, 11 women) performed repeated RIPC (7 daily sessions over 1 wk, n = 11; 12 sessions over 2 wk, n = 13), consisting of four repetitions of 5 min of arm blood flow occlusion separated by 5 min reperfusion. Laser speckle contrast imaging was used to measure skin blood flow responses, in perfusion units (PU), to local heating (Tloc = 42°C), acetylcholine (ACh), and sodium nitroprusside (SNP) before and after repeated RIPC. Data were expressed as cutaneous vascular conductance (CVC, in PU/mmHg). In results, the VD response to local heating increased after RIPC (∆CVC from baseline; 1 wk: 0.94 ± 0.11 to 1.19 ± 0.15, 2 wk: 1.18 ± 0.07 to 1.33 ± 0.10 PU/mmHg; P < 0.05) but the ∆CVC did not differ between weeks. SNP-induced VD increased after 2 wk of RIPC (∆CVC; 0.34 ± 0.07 to 0.63 ± 0.11 PU/mmHg; P < 0.05), but ACh-induced VD did not. In conclusion, repeated RIPC improves local heating- and SNP-mediated cutaneous VD. When compared with 1 wk of RIPC, 2 wk of RIPC does not induce further improvements in cutaneous VD function.NEW & NOTEWORTHY Repeated RIPC increases the cutaneous vasodilatory response to local heating and to sodium nitroprusside but not to acetylcholine. Thus, endothelial-independent and local heating-mediated cutaneous vasodilation are improved following RIPC. However, 2 wk of RIPC sessions are not more effective than 1 wk of RIPC sessions in enhancing local heating-mediated cutaneous vasodilation.
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Affiliation(s)
- Jahyun Kim
- Department of Kinesiology, Iowa State University, Ames, Iowa
| | - Warren D Franke
- Department of Kinesiology, Iowa State University, Ames, Iowa
| | - James A Lang
- Department of Kinesiology, Iowa State University, Ames, Iowa.,Department of Physical Therapy, Des Moines University, Des Moines, Iowa
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Dutheil F, Chaplais E, Vilmant A, Courteix D, Duche P, Abergel A, Pfabigan DM, Han S, Mobdillon L, Vallet GT, Mermillod M, Boudet G, Obert P, Izem O, Miolanne-Debouit M, Farigon N, Pereira B, Boirie Y. Stress management in obesity during a thermal spa residential programme (ObesiStress): protocol for a randomised controlled trial study. BMJ Open 2019; 9:e027058. [PMID: 31874865 PMCID: PMC7008425 DOI: 10.1136/bmjopen-2018-027058] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Stress and obesity are two public health issues. The relationship between obesity and stress is biological through the actions of stress on the major hormones that regulate appetite (leptin and ghrelin). Many spa resorts in France specialise in the treatment of obesity, but no thermal spa currently proposes a specific programme to manage stress in obesity. The ObesiStress protocol has been designed to offer a new residential stress management programme. This thermal spa treatment of obesity implements stress management strategies as suggested by international recommendations. METHODS AND ANALYSIS 140 overweight or obese participants with a Body Mass Index of >25 kg/m2 and aged over 18 years will be recruited. Participants will be randomised into two groups: a control group of usual practice (restrictive diet, physical activity and thermal spa treatment) and an intervention group with stress management in addition to the usual practice. In the present protocol, parameters will be measured on five occasions (at inclusion, at the beginning of the spa (day 0), at the end of the spa (day 21), and at 6 and 12 months). The study will assess the participants' heart rate variability, cardiac remodelling and function, electrodermal activity, blood markers, anthropometric profile, body composition, psychology and quality of life via the use of questionnaires and bone parameters. ETHICS AND DISSEMINATION The ObesiStress protocol complies with the ethics guidelines for Clinical Research and has been approved by the ethics committee (CPP Sud-Est VI, Clermont-Ferrand - ANSM: 2016-A01774-47). This study aimed to highlight the efficacy of a 21-day thermal spa residential programme of stress management in obesity through objective measurements of well-being and cardiovascular morbidity. Results will be disseminated during several research conferences and articles published in peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT03578757.
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Affiliation(s)
- Frédéric Dutheil
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Preventive and Occupational Medicine, WittyFit, Clermont-Ferrand, France
| | - Elodie Chaplais
- Université de Lorraine, Laboratory "Development, Adaption and Disability" (DevAH - EA 3450), Nancy, France
- University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Biostatistics Unit, Clinical research and Innovation Department (DRCI), Biostatistics, Clermont-Ferrand, France
| | - Audrey Vilmant
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Preventive and Occupational Medicine, WittyFit, Clermont-Ferrand, France
| | - Daniel Courteix
- Université Clermont Auvergne, Laboratory of the Metabolic Adaptations to Exercise under Physiological and Pathological Conditions (AME2P - EA 3533), Clermont-Ferrand, France
| | - Pascale Duche
- Université de Toulon, Laboratory of Impact of Physical Activity on Health (IAPS), Toulon, France
| | - Armand Abergel
- Université Clermont Auvergne, CNRS, UMR 6284, University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Hepatology Gastroenterology, Clermont-Ferrand, France
| | - Daniela M Pfabigan
- School of Psychological and Cognitive Sciences, PKU-IDG/McGovern Institute for Brain Research, Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, China
| | - Shihui Han
- School of Psychological and Cognitive Sciences, PKU-IDG/McGovern Institute for Brain Research, Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, China
| | - Laurie Mobdillon
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, Clermont-Ferrand, France
| | - Guillaume T Vallet
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, Clermont-Ferrand, France
| | - Martial Mermillod
- Université Grenoble Alpes, Université Savoie Mont Blanc, LPNC, CNRS, Grenoble, France
- Institut Universitaire de France, Paris, France
| | - Gil Boudet
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Preventive and Occupational Medicine, WittyFit, Clermont-Ferrand, France
| | - Philippe Obert
- Université d'Avignon, Laboratory of Cardiovascular Pharm-ecology (LaPEC EA4278), Avignon, France
| | - Omar Izem
- Université d'Avignon, Laboratory of Cardiovascular Pharm-ecology (LaPEC EA4278), Avignon, France
| | - Magalie Miolanne-Debouit
- University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Unit of Human Nutrition, Clermont-Ferrand, France
| | - Nicolas Farigon
- University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Unit of Human Nutrition, Clermont-Ferrand, France
| | - Bruno Pereira
- University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Biostatistics Unit, Clinical research and Innovation Department (DRCI), Biostatistics, Clermont-Ferrand, France
| | - Yves Boirie
- Université Clermont Auvergne, INRA, CRNH, University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Unit of Human Nutrition, Clermont-Ferrand, France
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Dutheil F, Chaplais E, Vilmant A, Lanoir D, Courteix D, Duche P, Abergel A, Pfabigan DM, Han S, Mondillon L, Vallet GT, Mermillod M, Boudet G, Obert P, Izem O, Boirie Y, Pereira B, Lesage FX. Effects of a short residential thermal spa program to prevent work-related stress/burnout on stress biomarkers: the ThermStress proof of concept study. J Int Med Res 2019; 47:5130-5145. [PMID: 31510825 PMCID: PMC6833408 DOI: 10.1177/0300060519859119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 06/03/2019] [Indexed: 12/19/2022] Open
Abstract
Objective Work-related stress is a public health issue. Stress has multiple physical and psychological consequences, the most serious of which are increased mortality and cardiovascular morbidity. The ThermStress protocol was designed to offer a short residential thermal spa program for work-related stress prevention that is compatible with a professional context. Methods Participants will be 56 male and female workers aged 18 years or above. All participants will undergo a 6-day residential spa program comprising psychological intervention, physical activity, thermal spa treatment, health education, eating disorder therapy and a follow-up. On six occasions, participants’ heart rate variability, cardiac remodelling and function, electrodermal activity, blood markers, anthropometry and body composition, psychology and quality of life will be measured using questionnaires and bone parameters. Results This study protocol reports the planned and ongoing research for this intervention. Discussion The ThermStress protocol has been approved by an institutional ethics committee (ANSM: 2016 A02082 49). It is expected that this proof of concept study will highlight the effect of a short-term specific residential thermal spa program on the prevention of occupational burnout and work-related stress. The findings will be disseminated at several research conferences and in published articles in peer-reviewed journals. Trial Registration: ClinicalTrials.gov ( NCT 03536624, 24/05/2018)
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Affiliation(s)
- Frédéric Dutheil
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Preventive and Occupational Medicine, WittyFit, Clermont-Ferrand, France
- Australian Catholic University, Faculty of Health, School of Exercise Science, Melbourne, Victoria, Australia
| | - Elodie Chaplais
- Université Clermont Auvergne, Laboratory of the Metabolic Adaptations to Exercise under Physiological and Pathological Conditions (AME2P - EA 3533), Clermont-Ferrand, France
- University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Clinical research and Innovation Department (DRCI), Clermont-Ferrand, France
- Australian Catholic University, Faculty of Health Science, School of Exercise Science, Strathfield, NSW, Australia
| | - Audrey Vilmant
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Preventive and Occupational Medicine, WittyFit, Clermont-Ferrand, France
| | - Denise Lanoir
- The EIPAS association (Espace Investigation Prévention Accompagnement du Stress), Clermont-Ferrand, France
| | - Daniel Courteix
- Université Clermont Auvergne, Laboratory of the Metabolic Adaptations to Exercise under Physiological and Pathological Conditions (AME2P - EA 3533), Clermont-Ferrand, France
- Australian Catholic University, Faculty of Health Science, School of Exercise Science, Strathfield, NSW, Australia
| | - Pascale Duche
- Université Clermont Auvergne, Laboratory of the Metabolic Adaptations to Exercise under Physiological and Pathological Conditions (AME2P - EA 3533), Clermont-Ferrand, France
| | - Armand Abergel
- Université Clermont Auvergne, CNRS, UMR 6284, University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Hepatology Gastroenterology, Clermont-Ferrand, France
| | - Daniela M. Pfabigan
- School of Psychological and Cognitive Sciences, PKU-IDG/McGovern Institute for Brain Research, Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, China
| | - Shihui Han
- School of Psychological and Cognitive Sciences, PKU-IDG/McGovern Institute for Brain Research, Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, China
| | - Laurie Mondillon
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, Clermont-Ferrand, France
| | - Guillaume T. Vallet
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, Clermont-Ferrand, France
| | | | - Gil Boudet
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Preventive and Occupational Medicine, WittyFit, Clermont-Ferrand, France
| | - Philippe Obert
- Australian Catholic University, Faculty of Health, School of Exercise Science, Melbourne, Victoria, Australia
- Institut Universitaire de France, Paris, France
| | - Omar Izem
- Institut Universitaire de France, Paris, France
| | - Yves Boirie
- Laboratory of Cardiovascular Pharm-ecology (LaPEC EA4278), Avignon University, Avignon, France
| | - Bruno Pereira
- Université Clermont Auvergne, INRA, CRNH, University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Unit of Human Nutrition, Clermont-Ferrand, France
| | - François-Xavier Lesage
- University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Clinical research and Innovation Department (DRCI), Biostatistics Unit, Clermont-Ferrand, France
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15
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Farr C, Middlebrooke AR, Armstrong N, Barker AR, Fulford J, Mawson DM, McManus AM. Objectively Measured Aerobic Fitness is Not Related to Vascular Health Outcomes and Cardiovascular Disease Risk In 9-10 Year Old Children. J Sports Sci Med 2019; 18:513-522. [PMID: 31427874 PMCID: PMC6683627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 05/13/2019] [Indexed: 06/10/2023]
Abstract
The purpose of the study was to examine whether a higher aerobic fitness in 9-10 year old children is related to superior macro and microvascular health and cardiovascular disease (CVD) risk. Ninety-six 9-10 year olds (53 boys) completed the study. Body composition was assessed from air displacement plethysmography and magnetic resonance imaging. Peak oxygen uptake (V̇O2) was assessed from a ramp-incremental cycling exercise test. Macrovascular outcomes were assessed from pulse wave analysis and pulse wave velocity (PWV) using applanation tonometry. Microvascular function was assessed from the functional microvascular reserve and skin erythrocyte flux after iontophoretic application of skin vasodilators. Assessment of CVD risk was assessed via body mass index, total body fat percentage and visceral adipose tissue, glucose, triglyceride, total cholesterol, HDL cholesterol and LDL cholesterol, while insulin resistance was calculated using Homeostatic model assessment. Aerobic fitness groups (higher vs lower) were calculated from V̇O2 peak scaled for body mass (mL·kg-0.61·min-1) and fat free mass (mL·FFM-1·min-1). Children with a higher V̇O2 peak scaled for body mass had a greater carotid to ankle PWV compared to those with lower aerobic fitness (mean ± SD: 6.08 ± 0.47 vs. 5.87 ± 0.43 m·s-1; p = 0.039), although this became non-significant when scaled for FFM (p = 0.56). No other mean differences in vascular or CVD risk health markers were present between higher and lower groups of aerobic fitness when scaled for body mass or FFM. Conclusion: Directly assessed aerobic fitness is not related to macro and microvascular health outcomes or CVD risk markers in 9-10 year olds.
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Affiliation(s)
- Colin Farr
- Children's Health and Exercise Research Centre, Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Andrew R Middlebrooke
- Children's Health and Exercise Research Centre, Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Neil Armstrong
- Children's Health and Exercise Research Centre, Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Alan R Barker
- Children's Health and Exercise Research Centre, Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Jon Fulford
- NIHR Exeter Clinical Research Facility, University of Exeter Medical School, University of Exeter, Exeter, UK
| | - David M Mawson
- Diabetes and Vascular Medicine, NIHR Exeter Clinical Research Facility, University of Exeter Medical School, RD&E (Wonford), Barrack Road, Exeter, UK
| | - Ali M McManus
- Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, Canada
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16
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Kojima S, Sakamoto T, Nagai Y, Matsui Y, Nambu K, Masamune K. Laser Speckle Contrast Imaging for Intraoperative Quantitative Assessment of Intestinal Blood Perfusion During Colorectal Surgery: A Prospective Pilot Study. Surg Innov 2019; 26:293-301. [PMID: 30638132 DOI: 10.1177/1553350618823426] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND The main limitation of perfusion assessment with indocyanine green fluorescence angiography during colorectal surgery is that the surgeon assesses the quality of perfusion subjectively. The ideal intestinal viability test must be minimally invasive, objective, and reproducible. We evaluated the quantitativity and reproducibility of laser speckle contrast imaging for perfusion assessment during colorectal surgery. METHODS This was a prospective, nonrandomized, pilot study of 8 consecutive patients who underwent elective left-sided colorectal resection. Laser speckle perfusion images at the site of proximal transection of the bowel were obtained intraoperatively. We tested the hypothesis that laser speckle contrast imaging was able to quantitatively identify areas of diminished intestinal perfusion after devascularization and assessed the reproducibility of this method. RESULTS All surgical procedures were uneventful and blood flow measurements were successfully made in all patients. None of the patients developed postoperative complications related to the anastomosis and stoma. Data analyses were successfully optimized to perform quantitative regional perfusion assessments in all cases. The bowel tissue blood flows of the anal side region adjacent to the transection line were significantly lower than those of the oral side region adjacent to the transection line after ligation of marginal vessels ( P = .012). Interrater reliability was high (intraclass correlation coefficients = 0.989), and a Bland-Altman plot showed few differences of mean flux data between 2 investigators. CONCLUSION Laser speckle contrast imaging is feasible for real-time assessment of bowel perfusion with quantitativity and excellent reproducibility during colorectal surgery without administration of any contrast agents.
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Affiliation(s)
- Shigehiro Kojima
- 1 Sainokuni Higashiomiya Medical Center, Saitama, Japan.,2 Joint Graduate School of Tokyo Women's Medical University and Waseda University, Tokyo, Japan
| | | | - Yuko Nagai
- 1 Sainokuni Higashiomiya Medical Center, Saitama, Japan
| | - Yutaka Matsui
- 3 Tokyo Women's Medical University, Tokyo, Japan.,4 Pioneer Corporation, Tokyo, Japan
| | - Kyojiro Nambu
- 2 Joint Graduate School of Tokyo Women's Medical University and Waseda University, Tokyo, Japan
| | - Ken Masamune
- 2 Joint Graduate School of Tokyo Women's Medical University and Waseda University, Tokyo, Japan
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17
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Henni S, Hersant J, Loufrani L, Duval G, Humeau-Heurtier A, Riou J, Abraham P. Painless local pressure application to test microvascular reactivity to ischemia. Microvasc Res 2018; 122:13-21. [PMID: 30399363 DOI: 10.1016/j.mvr.2018.10.013] [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: 06/29/2018] [Revised: 10/26/2018] [Accepted: 10/29/2018] [Indexed: 10/27/2022]
Abstract
BACKGROUND Forearm cutaneous blood flux (CBF) measurement with post-occlusive reactive hyperemia (PORH) is uncomfortable and may not be devoid of risks. We aimed to investigate post-compression reactive hyperemia (PCRH) with a custom-made indenter that was designed to be easily used routinely by inexperienced observers. METHODS Medical students evaluated PCRH with 1- to 4-min pressure applications of 16 to 34 kPa and PORH with 3-min forearm cuff occlusion using laser speckle contrast imaging in 15 healthy volunteers. Participants were asked to quantify their discomfort with a visual analogue scale (VAS) of 10 cm. Total ischemia (ISCH) was quantified by the product of CBF during ischemia and ischemia duration (min). We subtracted the CBF changes in the skin from a reference ipsilateral (PCRH) or contralateral (PORH) non-stimulated area. RESULTS The average VAS was 1.0 for PCRH vs. 6.0 for PORH (p < 0.001). A strong linear relationship between ISCH and peak PCRH (r2 = 0.915, p < 0.001) was noted. Peak PORH values (63.9 laser perfusion units (LPU)) were significantly lower than all values of the 3-min PCRH (72.6 LPU), including the one obtained with 16 kPa. CONCLUSION Inexperienced observers could test microvascular reactivity with PCRH without inducing the discomfort that is typically experienced with PORH. Further, PCRH elicits a higher peak response to ischemia compared with PORH. This extremely simple method could influence a broad spectrum of routine cutaneous microcirculation investigations, especially when a painful approach is particularly inadequate or if the patient is fragile. CLINICAL TRIAL REGISTRATION NCT02861924.
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Affiliation(s)
- Samir Henni
- Vascular Medicine, University Hospital of Angers, France; MitoVasc Institute, UMR CNRS 6015 - INSERM U 1083, Faculté de Médecine, Angers, France
| | - Jeanne Hersant
- Vascular Medicine, University Hospital of Angers, France; MitoVasc Institute, UMR CNRS 6015 - INSERM U 1083, Faculté de Médecine, Angers, France
| | - Laurent Loufrani
- MitoVasc Institute, UMR CNRS 6015 - INSERM U 1083, Faculté de Médecine, Angers, France
| | - Guillaume Duval
- Department of Gerontology, University Hospital of Angers, France
| | - Anne Humeau-Heurtier
- Université Angers, LARIS - Laboratoire Angevin de Recherche en Ingénierie des Systèmes, Angers, France
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- Vascular Medicine, University Hospital of Angers, France
| | - Jeremie Riou
- UMR Inserm 1066 - CNRS 6021, Faculté de Médecine, Angers, France
| | - Pierre Abraham
- MitoVasc Institute, UMR CNRS 6015 - INSERM U 1083, Faculté de Médecine, Angers, France; Sports Medicine, University Hospital of Angers, France.
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18
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Omarjee L, Larralde A, Jaquinandi V, Stivalet O, Mahe G. Performance of noninvasive laser Doppler flowmetry and laser speckle contrast imaging methods in diagnosis of Buerger disease: A case report. Medicine (Baltimore) 2018; 97:e12979. [PMID: 30412126 PMCID: PMC6221735 DOI: 10.1097/md.0000000000012979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
RATIONALE Buerger disease (BD) is a nonatherosclerotic, inflammatory, segmental vascular occlusive disease, which affects small and medium-sized arteries and veins and is triggered by substantial tobacco exposure. Angiographic findings consistent with BD are required for diagnosis. Laser Doppler flowmetry (LDF) and laser speckle contrast imaging (LSCI) could represent potential noninvasive alternative techniques to angiography. PATIENT CONCERNS We report the case of a 49-year-old smoker who developed an ischemic ulcer in the distal segment of the second finger of the left hand. He had no medical history. DIAGNOSES In our vascular center, LDF and LSCI are conducted routinely for digital artery disease diagnosis. LDF was indicative of digital obstructive artery disease (DOAD). Postocclusive reactive hyperemia, assessed by LCSI, demonstrated no skin blood flow (SBF) perfusion in the distal phalanx of the thumb, index, middle, and auricular fingers. Angiography confirmed BD, showing distally located multisegmental vessel occlusion and corkscrew collaterals in this patient's hands. INTERVENTIONS Ilomedine treatment was initiated and smoking cessation was definitive. OUTCOMES Recently, the patient had an improvement in clinical condition despite the persistence of a small zone of necrosis of the left index finger 28 days post-treatment. LESSONS Our observation suggests that where suspicion of BD is based on clinical criteria, combining LDF and LSCI could represent a noninvasive, safe means of reaching BD diagnosis. Further clinical trials are necessary to confirm this novel observation.
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Affiliation(s)
- Loukman Omarjee
- Department of Vascular Medicine, Rennes University Hospital, Rennes
- Rennes 1 University, INSERM CIC-1414, Rennes Cedex
- Department of Vascular Medicine, Redon Hospital, Redon
| | - Antoine Larralde
- Radiology and Medical Imaging Department, Rennes University Hospital, Rennes, France
| | - Vincent Jaquinandi
- Department of Vascular Medicine, Rennes University Hospital, Rennes
- Rennes 1 University, INSERM CIC-1414, Rennes Cedex
| | - Olivier Stivalet
- Department of Vascular Medicine, Rennes University Hospital, Rennes
- Rennes 1 University, INSERM CIC-1414, Rennes Cedex
| | - Guillaume Mahe
- Department of Vascular Medicine, Rennes University Hospital, Rennes
- Rennes 1 University, INSERM CIC-1414, Rennes Cedex
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Exercise Oximetry and Laser Speckle Contrast Imaging to Assess Microvascular Function in Lower Extremity Peripheral Artery Disease. Cardiovasc Drugs Ther 2018; 32:405-407. [PMID: 29987479 DOI: 10.1007/s10557-018-6806-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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20
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Brinca A, Pinho A, Vieira R. Searching for a mathematical model for blood perfusion of random pattern skin flaps: a clinical pilot study using in vivo laser speckle contrast imaging. J Eur Acad Dermatol Venereol 2018; 32:e406-e409. [PMID: 29633463 DOI: 10.1111/jdv.14997] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A Brinca
- Department of Dermatology, Dermatological Surgery Unit, Faculty of Medicine of the University of Coimbra, Coimbra University Hospital Centre, Coimbra, Portugal
| | - A Pinho
- Department of Dermatology, Coimbra University Hospital Centre, Coimbra, Portugal
| | - R Vieira
- Department of Dermatology, Dermatological Surgery Unit, Faculty of Medicine of the University of Coimbra, Coimbra University Hospital Centre, Coimbra, Portugal
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21
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Humeau-Heurtier A, Mahé G, Hunault G, Gascoin L, Abraham P. Multiscale Poincaré plot analysis of time series from laser speckle contrast imaging data. Biomed Signal Process Control 2017. [DOI: 10.1016/j.bspc.2017.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Loader J, Roustit M, Taylor F, MacIsaac RJ, Stewart S, Lorenzen C, Walther G. Assessing cutaneous microvascular function with iontophoresis: Avoiding non-specific vasodilation. Microvasc Res 2017; 113:29-39. [DOI: 10.1016/j.mvr.2017.04.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 04/26/2017] [Indexed: 10/19/2022]
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23
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de M Matheus AS, Clemente ELS, de Lourdes Guimarães Rodrigues M, Torres Valença DC, Gomes MB. Assessment of microvascular endothelial function in type 1 diabetes using laser speckle contrast imaging. J Diabetes Complications 2017; 31:753-757. [PMID: 28089343 DOI: 10.1016/j.jdiacomp.2016.12.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 12/13/2016] [Accepted: 12/29/2016] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To test whether laser speckle contrast imaging (LSCI) coupled with physiological post-occlusive reactive hyperemia (PORH) and pharmacological iontophoresis of acetylcholine (ACh) as local vasodilator stimuli could distinguish between cutaneous microvascular responses of Type 1 Diabetes (T1DM)'s patients with endothelial dysfunction and that of healthy controls. METHODS Patients with T1DM aged ≥12years completed a clinical-epidemiological questionnaire. Data detailing patients' such as daily insulin dose, duration of diabetes, and use of pharmaceuticals such as antihypertensive drugs and statins that could interfere with endothelial function were obtained. Vascular reactivity was assessed in the forearm by LSCI and PORH at baseline and during iontophoresis of ACh using increasing anodic currents of 30, 60, 90, 120, 150 and 180μA in 10second intervals. RESULTS This study included 50 patients with T1DM and 30 control subjects. The mean resting flux did not differ between patients and control subjects. T1DM patients exhibited endothelial dysfunction upon challenge with physiological or pharmacological stimuli. The microvascular response to both ACh and PORH (i.e., maximum response at peak and amplitude) were significantly reduced in patients with diabetes compared with control subjects (p<0.001). CONCLUSION We demonstrated that endothelium-dependent skin microvascular vasodilator responses are significantly impaired in patients with T1DM compared to healthy subjects investigated using LSCI coupled with ACh iontophoresis and PORH. Additionally, we find that LSCI is a promising methodology for studying physiological vascular reactivity in T1DM.
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Marche P, Dubois S, Abraham P, Parot-Schinkel E, Gascoin L, Humeau-Heurtier A, Ducluzeau PH, Mahe G. Neurovascular microcirculatory vasodilation mediated by C-fibers and Transient receptor potential vanilloid-type-1 channels (TRPV 1) is impaired in type 1 diabetes. Sci Rep 2017; 7:44322. [PMID: 28287157 PMCID: PMC5347083 DOI: 10.1038/srep44322] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 02/06/2017] [Indexed: 01/20/2023] Open
Abstract
Microvascular dysfunction may have an early onset in type 1 diabetes (T1D) and can precede major complications. Our objectives were to assess the endothelial-dependent (acetylcholine, ACh; and post-occlusive hyperemia, PORH), non-endothelial-dependent (sodium nitroprusside, SNP) and neurovascular-dependent (local heating, LH and current induced vasodilation, CIV) microcirculatory vasodilation in T1D patients compared with matched control subjects using a laser speckle contrast imager. Seventeen T1D patients - matched with 17 subjects according to age, gender, Body-Mass-Index, and smoking status - underwent macro- and microvascular investigations. The LH early peak assessed the transient receptor potential vanilloid type 1 channels (TRPV1) mediated vasodilation, whereas the plateau assessed the Nitirc-Oxyde (NO) and endothelium-derived hyperpolarizing factor (EDHF) pathways. PORH explored sensory nerves and (EDHF), while CIV assessed sensory nerves (C-fibers) and prostaglandin-mediated vasodilation. Using neurological investigations, we observed that C-fiber and A-delta fiber functions in T1D patients were similar to control subjects. PORH, CIV, LH peak and plateau vasodilations were significantly decreased in T1D patients compared to controls, whereas there was no difference between the two groups for ACh and SNP vasodilations. Neurovascular microcirculatory vasodilations (C-fibers and TRPV 1-mediated vasodilations) are impaired in TD1 patients whereas no abnormalities were found using clinical neurological investigations. Clinicaltrials: No. NCT02538120.
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Affiliation(s)
- P Marche
- Endocrinology Department, University Hospital of Angers, Angers, France
| | - S Dubois
- Endocrinology Department, University Hospital of Angers, Angers, France
| | - P Abraham
- Laboratory of Vascular Investigations, University Hospital of Angers, UMR CNRS6214/INSERM1083, LUNAM Université, Angers, France
| | - E Parot-Schinkel
- Methodology and Biostatistics Unit, University Hospital of Angers, Angers, France
| | - L Gascoin
- Laboratory of Vascular Investigations, University Hospital of Angers, UMR CNRS6214/INSERM1083, LUNAM Université, Angers, France
| | - A Humeau-Heurtier
- University of Angers, LARIS - Laboratoire Angevin de Recherche en Ingénierie des Systèmes, Angers, France
| | - P H Ducluzeau
- Endocrinology Department, University Hospital of Tours, Tours, France
| | - G Mahe
- INSERM Clinical Investigation Center (CIC 14 14), Rennes, France, Université de Rennes 1 and LUNAM University, Inserm 1083/CNRS 6214, Faculty of Medicine, Angers, France
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Khalil A, Humeau-Heurtier A, Gascoin L, Abraham P, Mahé G. Aging effect on microcirculation: A multiscale entropy approach on laser speckle contrast images. Med Phys 2017; 43:4008. [PMID: 27370119 DOI: 10.1118/1.4953189] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
PURPOSE It has long been known that age plays a crucial role in the deterioration of microvessels. The assessment of such deteriorations can be achieved by monitoring microvascular blood flow. Laser speckle contrast imaging (LSCI) is a powerful optical imaging tool that provides two-dimensional information on microvascular blood flow. The technique has recently been commercialized, and hence, few works discuss the postacquisition processing of laser speckle contrast images recorded in vivo. By applying entropy-based complexity measures to LSCI time series, we present herein the first attempt to study the effect of aging on microcirculation by measuring the complexity of microvascular signals over multiple time scales. METHODS Forearm skin microvascular blood flow was studied with LSCI in 18 healthy subjects. The subjects were subdivided into two age groups: younger (20-30 years old, n = 9) and older (50-68 years old, n = 9). To estimate age-dependent changes in microvascular blood flow, we applied three entropy-based complexity algorithms to LSCI time series. RESULTS The application of entropy-based complexity algorithms to LSCI time series can differentiate younger from older groups: the data fluctuations in the younger group have a significantly higher complexity than those obtained from the older group. CONCLUSIONS The effect of aging on microcirculation can be estimated by using entropy-based complexity algorithms to LSCI time series.
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Affiliation(s)
- A Khalil
- LARIS-Laboratoire Angevin de Recherche en Ingénierie des Systèmes, University of Angers, 62 Avenue Notre-Dame du Lac, Angers 49000, France
| | - A Humeau-Heurtier
- LARIS-Laboratoire Angevin de Recherche en Ingénierie des Systèmes, University of Angers, 62 Avenue Notre-Dame du Lac, Angers 49000, France
| | - L Gascoin
- Laboratoire de Physiologie et d'Explorations Vasculaires, Hospital of Angers, University of Angers, Angers Cedex 01 49033, France
| | - P Abraham
- Laboratoire de Physiologie et d'Explorations Vasculaires, Hospital of Angers, University of Angers, UMR CNRS 6214-INSERM 1083, Angers Cedex 01 49033, France
| | - G Mahé
- Pôle Imagerie Médicale et Explorations Fonctionnelles, Hospital Pontchaillou of Rennes, University of Rennes 1, INSERM CIC 1414, Rennes Cedex 9 35033, France
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Bau JG, Chia T, Wei SH, Li YH, Kuo FC. Correlations of Neck/Shoulder Perfusion Characteristics and Pain Symptoms of the Female Office Workers with Sedentary Lifestyle. PLoS One 2017; 12:e0169318. [PMID: 28060875 PMCID: PMC5217948 DOI: 10.1371/journal.pone.0169318] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 12/15/2016] [Indexed: 11/19/2022] Open
Abstract
AIM Modern office workers are often impacted by chronic neck/shoulder pain. Most of the previous studies which investigated the relationship of the occupational factors and musculoskeletal symptoms had adopted questionnaire survey. In this study the microcirculatory characteristics and perceived symptoms in neck/shoulder region were compared among office workers with sedentary lifestyle. METHODS Thirty-seven female office workers were recruited in this study. Microcirculatory flow in neck/shoulder region characterized by the mean blood flow (MMBF value), pulsatile blood flow (PMBF value), and the PMBF/MMBF ratio (perfusion pulsatility, PP) were investigated using Laser Doppler Flowmetry (LDF). A Chinese version of the Standardized Nordic Musculoskeletal Questionnaire (NMQ) were also administered to collect the information of perceived neck/shoulder symptoms. Correlations between the perfusion characteristics and the individual/occupational factors were analyzed using the Spearman test. The difference of the MMBF values between the low-pain group (pain level≤2) and the high-pain group (pain level>2) were compared using the Mann-Whitney U test. RESULTS There were 81% participants reported neck or shoulder pain symptoms. The duration of shoulder pain was significantly correlated with the workers' age and the duration of employment (p<0.01) (n = 37). While both the MMBF and PMBF values in shoulder region were significantly reduced with the workers' age and the duration of employment (p<0.05) (n = 27). And there was a 54% reduction in the MMBF value of the workers from age of 23 to 47. And the MMBF value of the high-pain group (n = 15) was significantly lower than the value of the low-pain group (n = 15) (p<0.05). The duration of shoulder pain showed a moderately negative correlation with PMBF values (n = 19). Besides, the PP value was moderately correlated with shoulder pain level attributed by the rapid reduction of MMBF values (p = 0.07). CONCLUSION In this study, the LDF method was used for the first time in the workplace in Taiwan. It was demonstrated that the MMBF in shoulder region were affected by aging effect and towards lower value at higher pain level. Impaired microcirculation caused by age effect, when coupled with sedentary lifestyle, was found to be more likely to evoke ischemia shoulder pain. Further studies are needed to assess current indicator, PP value, and the underlying mechanism of pain caused by sedentary lifestyle.
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Affiliation(s)
- Jian-Guo Bau
- Department of Biomedical Engineering, Hungkuang University, Taichung, Taiwan, ROC
| | - Taipau Chia
- Department of Safety, Health and Environmental Engineering, Hungkuang University, Taichung, Taiwan, ROC
- * E-mail: ,
| | - Shan-Hua Wei
- Neurology Surgery, Cheng Ching General Hospital, Taichung, Taiwan, ROC
| | - Yung-Hui Li
- Department of Computer Science and Information Engineering, National Central University, Taoyuan, Taiwan, ROC
| | - Fun-Chie Kuo
- Department of Safety, Health and Environmental Engineering, Hungkuang University, Taichung, Taiwan, ROC
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27
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Ansari MZ, Kang EJ, Manole MD, Dreier JP, Humeau-Heurtier A. Monitoring microvascular perfusion variations with laser speckle contrast imaging using a view-based temporal template method. Microvasc Res 2017; 111:49-59. [PMID: 28065672 DOI: 10.1016/j.mvr.2016.12.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 12/06/2016] [Accepted: 12/09/2016] [Indexed: 01/22/2023]
Abstract
PURPOSE Laser speckle contrast imaging (LSCI) continues to gain an increased interest in clinical and research studies to monitor microvascular perfusion. Due to its high spatial and temporal resolutions, LSCI may lead to a large amount of data. The analysis of such data, as well as the determination of the regions where the perfusion varies, can become a lengthy and tedious task. We propose here to analyze if a view-based temporal template method, the motion history image (MHI) algorithm, may be of use in detecting the perfusion variations locations. METHODS LSCI data recorded during three different kinds of perfusion variations are considered: (i) cerebral blood flow during spreading depolarization (SD) in a mouse; (ii) cerebral blood flow during SD in a rat; (iii) cerebral blood flow during cardiac arrest in a rat. Each of these recordings was processed with MHI. RESULTS We show that, for the three pathophysiological situations, MHI identifies the area in which perfusion evolves with time. The results are more easily obtained compared with a visual inspection of all of the frames constituting the recordings. MHI also has the advantage of relying on a rather simple algorithm. CONCLUSIONS MHI can be tested in clinical and research studies to aid the user in perfusion analyses.
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Affiliation(s)
- Mohammad Zaheer Ansari
- Department of Physics, Cambridge Institute of Polytechnic, Baheya, Angara, Ranchi 835103, Jharkhand, India.
| | - Eun-Jeung Kang
- Department of Experimental Neurology, Charité University Medicine Berlin, Charitéplatz 1, 10117 Berlin, Germany; Department of Neurology, Charité University Medicine Berlin, Charitéplatz 1, 10117 Berlin, Germany; Center for Stroke Research, Charité University Medicine Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Mioara D Manole
- University of Pittsburgh, Safar Center for Resuscitation Research, USA
| | - Jens P Dreier
- Department of Experimental Neurology, Charité University Medicine Berlin, Charitéplatz 1, 10117 Berlin, Germany; Department of Neurology, Charité University Medicine Berlin, Charitéplatz 1, 10117 Berlin, Germany; Center for Stroke Research, Charité University Medicine Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Anne Humeau-Heurtier
- Univ Angers, LARIS - Laboratoire Angevin de Recherche en Ingénierie des Systèmes, Angers, France
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Borges JP, Lopes GO, Verri V, Coelho MP, Nascimento PMC, Kopiler DA, Tibirica E. A novel effective method for the assessment of microvascular function in male patients with coronary artery disease: a pilot study using laser speckle contrast imaging. ACTA ACUST UNITED AC 2016; 49:e5541. [PMID: 27599202 PMCID: PMC5018692 DOI: 10.1590/1414-431x20165541] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 07/07/2016] [Indexed: 11/23/2022]
Abstract
Evaluation of microvascular endothelial function is essential for investigating the pathophysiology and treatment of cardiovascular and metabolic diseases. Although laser speckle contrast imaging technology is well accepted as a noninvasive methodology for assessing microvascular endothelial function, it has never been used to compare male patients with coronary artery disease with male age-matched healthy controls. Thus, the aim of this study was to determine whether laser speckle contrast imaging could be used to detect differences in the systemic microvascular functions of patients with established cardiovascular disease (n=61) and healthy age-matched subjects (n=24). Cutaneous blood flow was assessed in the skin of the forearm using laser speckle contrast imaging coupled with the transdermal iontophoretic delivery of acetylcholine and post-occlusive reactive hyperemia. The maximum increase in skin blood flow induced by acetylcholine was significantly reduced in the cardiovascular disease patients compared with the control subjects (74 vs 116%; P<0.01). With regard to post-occlusive reactive hyperemia-induced vasodilation, the patients also presented reduced responses compared to the controls (0.42±0.15 vs 0.50±0.13 APU/mmHg; P=0.04). In conclusion, laser speckle contrast imaging can identify endothelial and microvascular dysfunctions in male individuals with cardiovascular disease. Thus, this technology appears to be an efficient non-invasive technique for evaluating systemic microvascular and endothelial functions, which could be valuable as a peripheral marker of atherothrombotic diseases in men.
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Affiliation(s)
- J P Borges
- Laboratório de Atividade Física e Promoção è Saúde, Departamento de Desporto Coletivo, Instituto de Educação Física e Desportos, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - G O Lopes
- Laboratório de Atividade Física e Promoção è Saúde, Departamento de Desporto Coletivo, Instituto de Educação Física e Desportos, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.,Instituto Nacional de Cardiologia, Rio de Janeiro, RJ, Brasil
| | - V Verri
- Instituto Nacional de Cardiologia, Rio de Janeiro, RJ, Brasil
| | - M P Coelho
- Instituto Nacional de Cardiologia, Rio de Janeiro, RJ, Brasil
| | | | - D A Kopiler
- Instituto Nacional de Cardiologia, Rio de Janeiro, RJ, Brasil
| | - E Tibirica
- Instituto Nacional de Cardiologia, Rio de Janeiro, RJ, Brasil.,Laboratório de Investigação Cardiovascular, Departamento Osório de Almeida, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ, Brasil
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29
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Wasilewski R, Ubara EO, Klonizakis M. Assessing the effects of a short-term green tea intervention in skin microvascular function and oxygen tension in older and younger adults. Microvasc Res 2016; 107:65-71. [PMID: 27165772 DOI: 10.1016/j.mvr.2016.05.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/05/2016] [Accepted: 05/07/2016] [Indexed: 01/11/2023]
Abstract
Green tea consumption has been associated with a reduction in cardiovascular disease risk factors. However, there is little evidence examining its potential differing effect between younger and older populations, whilst little is known on its effect on the circulatory system when oxygen demand is higher. Therefore the aim of this study was to evaluate the short-term effects of green tea consumption on microvascular functioning in both an older and younger population. Fifteen young [24 (4.0)] and fifteen older [61 (4.0)] participants, consumed two cups of green tea daily for 14days. We used Laser Doppler Flowmetry (LDF) to assess cutaneous microvascular function and Transcutaneous Oxygen monitoring (TcPO2) to assess skin oxygen tension. Systolic and diastolic blood pressure were also assessed on both visits. We observed significant improvements in axon-mediated microvascular vasodilation for the younger group [1.6 (0.59) vs 2.05 (0.72), p<0.05] and the older group [1.25 (0.58) vs 1.65 (0.5) p<0.05]. Improvements in skin oxygen tension were also noted for both groups in both noted TcPO2 measures (i.e. 1.25 (0.58) vs 1.65 (0.5) (p<0.05), for ΔTcPO2max for the older group, between visits) respectively. Improvements were also observed for systolic blood pressure in both the younger [120 (10) vs 112 (10), p<0.05] and older group [129 (12) v 124 (11), p<0.001]. In conclusion, we observed statistically-significant improvements in microvascular function and skin oxygen tension. Our results suggest that green tea may prove beneficial as a dietary element in lifestyle interventions aiming to lower cardiovascular disease risk, in both older and younger populations.
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Affiliation(s)
- Rebecca Wasilewski
- Human Nutrition Unit, The Medical School, The University of Sheffield, UK
| | - Emmanuel O Ubara
- Human Nutrition Unit, The Medical School, The University of Sheffield, UK
| | - Markos Klonizakis
- Centre for Sport and Exercise Science, Sheffield Hallam University, UK.
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30
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Tran BD, Chiu A, Tran C, Rogacion DR, Tfaye N, Ganesan G, Galassetti PR. Exercise and Repeated Testing Improves Accuracy of Laser Doppler Assessment of Microvascular Function Following Shortened (1-minute) Blood Flow Occlusion. Microcirculation 2016; 23:293-300. [PMID: 26998587 DOI: 10.1111/micc.12277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 03/14/2016] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To determine whether stability/accuracy of post-occlusive LDF following shortened, one-minute blood flow occlusion, increases in the post-exercise state or by averaging multiple measurements. METHODS Six healthy adults (3F) underwent LDF eight times at rest and following exercise, assessing post-occlusive (one-minute occlusion) reactive hyperemia in the cutaneous microcirculation of the forefinger. Measured variables included: pre- and post-occlusion steady-state perfusion (Plat1, Plat2), maximum post-occlusive perfusion (Max), PkT, and the ratio Max/Plat1. RESULTS Stability/accuracy of all variables improved performing measurements after exercise (p < 0.05 Plat 1, Plat 2, Max and Max/Plat1). PkT and Max/Plat 1 displayed the greatest accuracy at rest (26.6 ± 5.1% and 26.6 ± 4.4% average difference, %Diff, of single measurements from individual "true" means, respectively); for these variables, %Diff improved to 19.5 ± 5.3 and 17.6 ± 2.1, respectively, following exercise. Overall, averaging multiple measurements performed at rest also improved stability/accuracy in all variables. This improvement was comparable to that obtained with a single measurement following exercise. CONCLUSIONS A standardized exercise stimulus prior to testing significantly improves stability/accuracy of LDF following shortened, one-minute blood flow occlusion. Our results suggest the possibilities of broader applications of exercise to optimize measurements from a variety of skin perfusion methodologies.
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Affiliation(s)
- Brian D Tran
- Institute for Clinical and Translational Science, University of California - Irvine, Irvine, California, USA
| | - Abraham Chiu
- Institute for Clinical and Translational Science, University of California - Irvine, Irvine, California, USA
| | - Charlene Tran
- Institute for Clinical and Translational Science, University of California - Irvine, Irvine, California, USA
| | - Danica Rose Rogacion
- Institute for Clinical and Translational Science, University of California - Irvine, Irvine, California, USA
| | - Nicole Tfaye
- Institute for Clinical and Translational Science, University of California - Irvine, Irvine, California, USA
| | - Goutham Ganesan
- Institute for Clinical and Translational Science, University of California - Irvine, Irvine, California, USA
| | - Pietro R Galassetti
- Institute for Clinical and Translational Science, University of California - Irvine, Irvine, California, USA
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Vaz PG, Humeau-Heurtier A, Figueiras E, Correia C, Cardoso J. Laser Speckle Imaging to Monitor Microvascular Blood Flow: A Review. IEEE Rev Biomed Eng 2016; 9:106-20. [DOI: 10.1109/rbme.2016.2532598] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Chen D, Ren J, Wang Y, Zhao H, Li B, Gu Y. Relationship between the blood perfusion values determined by laser speckle imaging and laser Doppler imaging in normal skin and port wine stains. Photodiagnosis Photodyn Ther 2015; 13:1-9. [PMID: 26592337 DOI: 10.1016/j.pdpdt.2015.11.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 11/02/2015] [Accepted: 11/18/2015] [Indexed: 01/28/2023]
Abstract
OBJECTIVE Laser Doppler imaging (LDI) and laser speckle imaging (LSI) are two major optical techniques aiming at non-invasively imaging the skin blood perfusion. However, the relationship between perfusion values determined by LDI and LSI has not been fully explored. METHODS 8 healthy volunteers and 13 PWS patients were recruited. The perfusions in normal skin on the forearm of 8 healthy volunteers were simultaneously measured by both LDI and LSI during post-occlusive reactive hyperemia (PORH). Furthermore, the perfusions of port wine stains (PWS) lesions and contralateral normal skin of 10 PWS patients were also determined. In addition, the perfusions for PWS lesions from 3 PWS patients were successively monitored at 0, 10 and 20min during vascular-targeted photodynamic therapy (V-PDT). The average perfusion values determined by LSI were compared with those of LDI for each subject. RESULTS In the normal skin during PORH, power function provided better fits of perfusion values than linear function: powers for individual subjects go from 1.312 to 1.942 (R(2)=0.8967-0.9951). There was a linear relationship between perfusion values determined by LDI and LSI in PWS and contralateral normal skin (R(2)=0.7308-0.9623), and in PWS during V-PDT (R(2)=0.8037-0.9968). CONCLUSION The perfusion values determined by LDI and LSI correlate closely in normal skin and PWS over a broad range of skin perfusion. However, it still suggests that perfusion range and characteristics of the measured skin should be carefully considered if LDI and LSI measures are compared.
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Affiliation(s)
- Defu Chen
- School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China
| | - Jie Ren
- Department of Laser Medicine, Chinese People's Liberation Army General Hospital, Beijing 100853, China
| | - Ying Wang
- Department of Laser Medicine, Chinese People's Liberation Army General Hospital, Beijing 100853, China
| | - Hongyou Zhao
- Department of Laser Medicine, Chinese People's Liberation Army General Hospital, Beijing 100853, China
| | - Buhong Li
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fujian 350007, China
| | - Ying Gu
- Department of Laser Medicine, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
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Iredahl F, Löfberg A, Sjöberg F, Farnebo S, Tesselaar E. Non-Invasive Measurement of Skin Microvascular Response during Pharmacological and Physiological Provocations. PLoS One 2015; 10:e0133760. [PMID: 26270037 PMCID: PMC4536230 DOI: 10.1371/journal.pone.0133760] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Accepted: 07/01/2015] [Indexed: 11/18/2022] Open
Abstract
Introduction Microvascular changes in the skin due to pharmacological and physiological provocations can be used as a marker for vascular function. While laser Doppler flowmetry (LDF) has been used extensively for measurement of skin microvascular responses, Laser Speckle Contrast Imaging (LSCI) and Tissue Viability Imaging (TiVi) are novel imaging techniques. TiVi measures red blood cell concentration, while LDF and LSCI measure perfusion. Therefore, the aim of this study was to compare responses to provocations in the skin using these different techniques. Method Changes in skin microcirculation were measured in healthy subjects during (1) iontophoresis of sodium nitroprusside (SNP) and noradrenaline (NA), (2) local heating and (3) post-occlusive reactive hyperemia (PORH) using LDF, LSCI and TiVi. Results Iontophoresis of SNP increased perfusion (LSCI: baseline 40.9±6.2 PU; 10-min 100±25 PU; p<0.001) and RBC concentration (TiVi: baseline 119±18; 10-min 150±41 AU; p = 0.011). No change in perfusion (LSCI) was observed after iontophoresis of NA (baseline 38.0±4.4 PU; 10-min 38.9±5.0 PU; p = 0.64), while RBC concentration decreased (TiVi: baseline 59.6±11.8 AU; 10-min 54.4±13.3 AU; p = 0.021). Local heating increased perfusion (LDF: baseline 8.8±3.6 PU; max 112±55 PU; p<0.001, LSCI: baseline 50.8±8.0 PU; max 151±22 PU; p<0.001) and RBC concentration (TiVi: baseline 49.2±32.9 AU; max 99.3±28.3 AU; p<0.001). After 5 minutes of forearm occlusion with prior exsanguination, a decrease was seen in perfusion (LDF: p = 0.027; LSCI: p<0.001) and in RBC concentration (p = 0.045). Only LSCI showed a significant decrease in perfusion after 5 minutes of occlusion without prior exsanguination (p<0.001). Coefficients of variation were lower for LSCI and TiVi compared to LDF for most responses. Conclusion LSCI is more sensitive than TiVi for measuring microvascular changes during SNP-induced vasodilatation and forearm occlusion. TiVi is more sensitive to noradrenaline-induced vasoconstriction. LSCI and TiVi show lower inter-subject variability than LDF. These findings are important to consider when choosing measurement techniques for studying skin microvascular responses.
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Affiliation(s)
- Fredrik Iredahl
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
- * E-mail:
| | - Andreas Löfberg
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Folke Sjöberg
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
- Department of Plastic Surgery, Hand Surgery, and Burns, Linköping University, Linköping, Sweden
| | - Simon Farnebo
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
- Department of Plastic Surgery, Hand Surgery, and Burns, Linköping University, Linköping, Sweden
| | - Erik Tesselaar
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
- Department of Radiation Physics, Linköping University, Linköping, Sweden
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Iredahl F, Sadda V, Ward LJ, Hackethal J, Farnebo S, Tesselaar E, Sjöberg F. Modeling Perfusion Dynamics in the Skin During Iontophoresis of Vasoactive Drugs Using Single-Pulse and Multiple-Pulse Protocols. Microcirculation 2015; 22:446-53. [DOI: 10.1111/micc.12211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 05/22/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Fredrik Iredahl
- Department of Hand and Plastic Surgery; Burns and Intensive care and Department of Clinical and Experimental Medicine; Linköping University; Linköping Sweden
| | - Veeranjaneyulu Sadda
- Department of Hand and Plastic Surgery; Burns and Intensive care and Department of Clinical and Experimental Medicine; Linköping University; Linköping Sweden
| | - Liam J. Ward
- Department of Hand and Plastic Surgery; Burns and Intensive care and Department of Clinical and Experimental Medicine; Linköping University; Linköping Sweden
| | - Johannes Hackethal
- Department of Hand and Plastic Surgery; Burns and Intensive care and Department of Clinical and Experimental Medicine; Linköping University; Linköping Sweden
- Ludwig Boltzmann Institute for Clinical and Experimental Traumatology; University of Applied Sciences; Vienna Austria
| | - Simon Farnebo
- Department of Hand and Plastic Surgery; Burns and Intensive care and Department of Clinical and Experimental Medicine; Linköping University; Linköping Sweden
| | - Erik Tesselaar
- Department of Hand and Plastic Surgery; Burns and Intensive care and Department of Clinical and Experimental Medicine; Linköping University; Linköping Sweden
| | - Folke Sjöberg
- Department of Hand and Plastic Surgery; Burns and Intensive care and Department of Clinical and Experimental Medicine; Linköping University; Linköping Sweden
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Processing of laser Doppler flowmetry signals from healthy subjects and patients with varicose veins: Information categorisation approach based on intrinsic mode functions and entropy computation. Med Eng Phys 2015; 37:553-9. [DOI: 10.1016/j.medengphy.2015.03.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 02/14/2015] [Accepted: 03/27/2015] [Indexed: 11/18/2022]
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Mahé G, Abraham P, Humeau-Heurtier A, Gascoin L, Lefthériotis G, Durand S. Evidence for a vasomotor cyclo-oxygenase dependent mechanism of sensitization at the cutaneous level. Br J Clin Pharmacol 2015; 80:185-92. [PMID: 25753207 DOI: 10.1111/bcp.12623] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 02/23/2015] [Accepted: 03/03/2015] [Indexed: 11/30/2022] Open
Abstract
AIMS Current-induced vasodilation (CIV) is an axon-reflex response observed during monopolar current application such as iontophoresis. Cyclo-oxygenase derivates (COD) participate in CIV and act as sensitizing agents at the anodal level. Mechanisms involved during cathodal current application (CCA) are partially unknown. In a randomized double-blind crossover trial, we tested in 16 healthy subjects (i) the influence of the inter-stimulation interval (I-I) by comparing CIV following all-at-once 10 s CCA against 2 × 5 s CCA with intervals ranging from15 s-16 min and (ii) the participation of COD in CIV using 1 g aspirin or placebo intake. METHODS Measurements were repeated 2 h and 14 days after treatment. Laser Doppler flowmetry assessed cutaneous blood flow, reported in multiples of baseline. RESULTS Before treatment, peak vasodilation 10 min after the last current application (CVCstim2 ) increased compared with baseline whatever the I-I. Increase in CVCstim2 from baseline was greater for the 4 min (9.4 (5.3, 10.9) times; median (1(st) percentile, 3(rd) percentile)) and higher I-Is compared with all-at-once delivery (3.0 (2.1, 4.3) times, P < 0.05). The response was similar after placebo but aspirin abolished this vasodilation (increase by 1.2 (1.1, 1.3) times for all-at-once delivery and by 1.5 (1.3, 1.7) ± 0.3 times for 4 min interval, 2 h after aspirin intake) that recovered after 14 days. CONCLUSIONS This confirms the participation of COD in CIV with CCA and their sensitizing action. This model can represent an attractive way to study the axon-reflex and sensitizing function of COD in humans.
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Affiliation(s)
- G Mahé
- Biologie Neurovasculaire et Mitochondriale Intégrée (BNMI) - Unité mixte UMR CNRS 6214 / INSERM U 1083, Faculté de Médecine, Angers, France.,Laboratory of Vascular Investigations, University Hospital of Angers, France.,CHU Rennes, Imagerie cœur-vaisseaux, F-35033, Rennes, France.,INSERM, Clinical Investigation Center CIC 1414, F-34043, Rennes, France.,Université de Rennes 1, F-34043, Rennes, France
| | - P Abraham
- Biologie Neurovasculaire et Mitochondriale Intégrée (BNMI) - Unité mixte UMR CNRS 6214 / INSERM U 1083, Faculté de Médecine, Angers, France.,Laboratory of Vascular Investigations, University Hospital of Angers, France
| | - A Humeau-Heurtier
- LARIS - Laboratoire Angevin de Recherche en Ingénierie des Systèmes, Université d'Angers, 62 avenue Notre-Dame du Lac, 49000, Angers, France
| | - L Gascoin
- Laboratory of Vascular Investigations, University Hospital of Angers, France
| | - G Lefthériotis
- Biologie Neurovasculaire et Mitochondriale Intégrée (BNMI) - Unité mixte UMR CNRS 6214 / INSERM U 1083, Faculté de Médecine, Angers, France.,Laboratory of Vascular Investigations, University Hospital of Angers, France
| | - S Durand
- Université du Maine, EA 4334, Motricité, Interactions, Performance, LUNAM Université, Le Mans, 72085, Cedex 9, France
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Khalil A, Humeau-Heurtier A, Mahé G, Abraham P. Laser speckle contrast imaging: age-related changes in microvascular blood flow and correlation with pulse-wave velocity in healthy subjects. JOURNAL OF BIOMEDICAL OPTICS 2015; 20:051010. [PMID: 25423123 DOI: 10.1117/1.jbo.20.5.051010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 10/29/2014] [Indexed: 06/04/2023]
Abstract
In the cardiovascular system, the macrocirculation and microcirculation—two subsystems—can be affected by aging. Laser speckle contrast imaging (LSCI) is an emerging noninvasive optical technique that allows the monitoring of microvascular function and can help, using specific data processing, to understand the relationship between the subsystems. Using LSCI, the goals of this study are: (i) to assess the aging effect over microvascular parameters (perfusion and moving blood cells velocity, MBCV) and macrocirculation parameters (pulse-wave velocity, PWV) and (ii) to study the relationship between these parameters. In 16 healthy subjects (20 to 62 years old), perfusion and MBCV computed from LSCI are studied in three physiological states: rest, vascular occlusion, and post-occlusive reactive hyperaemia (PORH). MBCV is computed from a model of velocity distribution. During PORH, the experimental results show a relationship between perfusion and age (R(2) = 0.67) and between MBCV and age (R(2) = 0.72), as well as between PWV and age at rest (R(2) = 0.91). A relationship is also found between perfusion and MBCV for all physiological states (R(2) = 0.98). Relationships between microcirculation and macrocirculation (perfusion-PWV or MBCV-PWV) are found only during PORH with R(2) = 0.76 and R(2) = 0.77, respectively. This approach may prove useful for investigating dysregulation in blood flow.
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Affiliation(s)
- Adil Khalil
- University of Angers, LARIS-Laboratoire Angevin de Recherche en Ingénierie des Systémes, 62 Avenue Notre-Dame du Lac, 49000 Angers, France
| | - Anne Humeau-Heurtier
- University of Angers, LARIS-Laboratoire Angevin de Recherche en Ingénierie des Systémes, 62 Avenue Notre-Dame du Lac, 49000 Angers, France
| | - Guillaume Mahé
- Pôle Imagerie Médicale et Explorations Fonctionnelles, Inserm CIC 1414, Hospital Pontchaillou of Rennes, University of Rennes 1, 35033 Rennes Cedex 9, France
| | - Pierre Abraham
- University of Angers, Hospital of Angers, Laboratoire de Physiologie et d'Explorations Vasculaires UMR CNRS 6214-INSERM 1083, 49033 Angers Cedex 01, France
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Different responses of the retinal and cutaneous microcirculation to transient dysmetabolic conditions. ATHEROSCLEROSIS SUPP 2015; 18:1-7. [DOI: 10.1016/j.atherosclerosissup.2015.02.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Bi R, Dong J, Poh CL, Lee K. Optical methods for blood perfusion measurement--theoretical comparison among four different modalities. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2015; 32:860-6. [PMID: 26366910 DOI: 10.1364/josaa.32.000860] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Blood perfusion in human tissue can be measured in vivo by means of various optical methods, which seem to be very different from one another. The most prominent examples of them are laser Doppler flowmetry, laser speckle contrast imaging, diffuse correlation spectroscopy, and the most recently developed diffuse speckle contrast analysis. In this paper, we claim that these four seemingly different modalities are examining different aspects of the same entity-the temporal autocorrelation function of scattered photons. We will show how the observables in each modality can be theoretically derived from the temporal autocorrelation function, and will discuss the merits and drawbacks of each modality in its practical use.
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Sauvet F, Drogou C, Bougard C, Arnal PJ, Dispersyn G, Bourrilhon C, Rabat A, Van Beers P, Gomez-Merino D, Faraut B, Leger D, Chennaoui M. Vascular response to 1 week of sleep restriction in healthy subjects. A metabolic response? Int J Cardiol 2015; 190:246-55. [PMID: 25932797 DOI: 10.1016/j.ijcard.2015.04.119] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 03/02/2015] [Accepted: 04/15/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Sleep loss may induce endothelial dysfunction, a key factor in cardiovascular risk. We examined the endothelial function during one week of sleep restriction and a recovery period (from 3-to-13 days) in healthy subjects, and its link to autonomic, inflammatory and/or endocrine responses. METHODS 12 men were followed at baseline (B1, 8-h sleep), after 2 (SR2) and 6 (SR6) days of SR (4-h sleep: 02:00-06:00) and after 1 (R1) and 12 (R12) recovery nights (8h sleep). At 10:00, we assessed changes in: arm cutaneous vascular conductance (CVC) induced by local application of methacholine (MCh), cathodal current (CIV) and heat (44°C), finger CVC and skin temperature (Tfi) during local cold exposure (5°C, 20-min) and passive recovery (22°C, 20-min). Blood samples were collected at 08:00. RESULTS Compared with baseline (B1), MCh and heat-induced maximal CVC values (CVC peak) were decreased at SR6 and R1. No effect of SR was observed for Tfi and CVC during immersion whereas these values were lower during passive recovery on SR6 and R1. From SR2 to R12, plasma concentrations of insulin, IGF-1 (total and free) and MCP-1 were significantly increased while those of testosterone and prolactin were decreased. Whole-blood blood mRNA concentrations of TNF-α and IL-1β were higher than B1. No changes in noradrenaline concentrations, heart rate and blood pressure were observed. CONCLUSIONS These results demonstrate that SR reduces endothelial-dependent vasodilatation and local tolerance to cold. This endothelial dysfunction is independent of blood pressure and sympathetic activity but associated with inflammatory and metabolic pathway responses (ClinicalTrials-NCT01989741).
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Affiliation(s)
- Fabien Sauvet
- Institut de recherche biomédicale des armées(IRBA), Brétigny-sur-Orge, France; Université Paris Descartes, Hôtel Dieu, EA7330 VIFASOM (Vigilance, Fatigue, SOmmeil), Paris, France.
| | - Catherine Drogou
- Institut de recherche biomédicale des armées(IRBA), Brétigny-sur-Orge, France; Université Paris Descartes, Hôtel Dieu, EA7330 VIFASOM (Vigilance, Fatigue, SOmmeil), Paris, France
| | - Clément Bougard
- Institut de recherche biomédicale des armées(IRBA), Brétigny-sur-Orge, France; Université Paris Descartes, Hôtel Dieu, EA7330 VIFASOM (Vigilance, Fatigue, SOmmeil), Paris, France
| | - Pierrick J Arnal
- Institut de recherche biomédicale des armées(IRBA), Brétigny-sur-Orge, France; Université Paris Descartes, Hôtel Dieu, EA7330 VIFASOM (Vigilance, Fatigue, SOmmeil), Paris, France; Université de Lyon, Laboratoire de Physiologie de l'Exercice, Saint Etienne, France
| | - Garance Dispersyn
- Institut de recherche biomédicale des armées(IRBA), Brétigny-sur-Orge, France; Université Paris Descartes, Hôtel Dieu, EA7330 VIFASOM (Vigilance, Fatigue, SOmmeil), Paris, France
| | - Cyprien Bourrilhon
- Institut de recherche biomédicale des armées(IRBA), Brétigny-sur-Orge, France
| | - Arnaud Rabat
- Institut de recherche biomédicale des armées(IRBA), Brétigny-sur-Orge, France; Université Paris Descartes, Hôtel Dieu, EA7330 VIFASOM (Vigilance, Fatigue, SOmmeil), Paris, France
| | - Pascal Van Beers
- Institut de recherche biomédicale des armées(IRBA), Brétigny-sur-Orge, France; Université Paris Descartes, Hôtel Dieu, EA7330 VIFASOM (Vigilance, Fatigue, SOmmeil), Paris, France
| | - Danielle Gomez-Merino
- Université Paris Descartes, Hôtel Dieu, EA7330 VIFASOM (Vigilance, Fatigue, SOmmeil), Paris, France
| | - Brice Faraut
- Université Paris Descartes, Hôtel Dieu, EA7330 VIFASOM (Vigilance, Fatigue, SOmmeil), Paris, France; Centre du Sommeil et de la Vigilance, Hôtel Dieu, APHP, Paris, France
| | - Damien Leger
- Université Paris Descartes, Hôtel Dieu, EA7330 VIFASOM (Vigilance, Fatigue, SOmmeil), Paris, France; Centre du Sommeil et de la Vigilance, Hôtel Dieu, APHP, Paris, France
| | - Mounir Chennaoui
- Institut de recherche biomédicale des armées(IRBA), Brétigny-sur-Orge, France; Université Paris Descartes, Hôtel Dieu, EA7330 VIFASOM (Vigilance, Fatigue, SOmmeil), Paris, France
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Ogai K, Matsumoto M, Minematsu T, Kitamura K, Kobayashi M, Sugama J, Sanada H. Development of an improved method for quantitative analysis of skin blotting: increasing reliability and applicability for skin assessment. Int J Cosmet Sci 2015; 37:425-32. [DOI: 10.1111/ics.12217] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 02/07/2015] [Indexed: 01/08/2023]
Affiliation(s)
- K. Ogai
- Wellness Promotion Science Center; Institute of Medical, Pharmaceutical and Health Sciences; Kanazawa University; Kanazawa Ishikawa Japan
| | - M. Matsumoto
- Division of Health Science; Department of Clinical Nursing; Graduate School of Medicine; Kanazawa University; Kanazawa Ishikawa Japan
| | - T. Minematsu
- Department of Gerontological Nursing/Wound Care Management; Graduate School of Medicine; The University of Tokyo; Bunkyo-ku Tokyo Japan
| | - K. Kitamura
- Department of Clinical Laboratory Science; Graduate School of Medical Science; Kanazawa University; Kanazawa Ishikawa Japan
| | - M. Kobayashi
- Wellness Promotion Science Center; Institute of Medical, Pharmaceutical and Health Sciences; Kanazawa University; Kanazawa Ishikawa Japan
| | - J. Sugama
- Wellness Promotion Science Center; Institute of Medical, Pharmaceutical and Health Sciences; Kanazawa University; Kanazawa Ishikawa Japan
- Division of Health Science; Department of Clinical Nursing; Graduate School of Medicine; Kanazawa University; Kanazawa Ishikawa Japan
| | - H. Sanada
- Department of Gerontological Nursing/Wound Care Management; Graduate School of Medicine; The University of Tokyo; Bunkyo-ku Tokyo Japan
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Humeau-Heurtier A, Mahé G, Abraham P. Microvascular blood flow monitoring with laser speckle contrast imaging using the generalized differences algorithm. Microvasc Res 2015; 98:54-61. [PMID: 25576743 DOI: 10.1016/j.mvr.2014.12.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 12/22/2014] [Accepted: 12/27/2014] [Indexed: 10/24/2022]
Abstract
Laser speckle contrast imaging (LSCI) is a full-field optical technique to monitor microvascular blood flow with high spatial and temporal resolutions. It is used in many medical fields such as dermatology, vascular medicine, or neurosciences. However, LSCI leads to a large amount of data: image sampling frequency is often of several Hz and recordings usually last several minutes. Therefore, clinicians often perform regions of interest in which a spatial averaging of blood flow is performed and the result is followed with time. Unfortunately, this leads to a poor spatial resolution for the analyzed data. At the same time, a higher spatial resolution for the perfusion maps is wanted. To get over this dilemma we propose a new post-acquisition visual representation for LSCI perfusion data using the so-called generalized differences (GD) algorithm. From a stack of perfusion images, the procedure leads to a new single image with the same spatial resolution as the original images and this new image reflects perfusion changes. The algorithm is herein applied on simulated stacks of images and on experimental LSCI perfusion data acquired in three different situations with a commercialized laser speckle contrast imager. The results show that the GD algorithm provides a new way of visualizing LSCI perfusion data.
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Affiliation(s)
- Anne Humeau-Heurtier
- University of Angers, LARIS - Laboratoire Angevin de Recherche en Ingénierie des Systèmes, 62 Avenue Notre-Dame du Lac, 49000 Angers, France.
| | - Guillaume Mahé
- University of Rennes 1, CHU of Rennes, Pôle Imagerie Médicale et Explorations Fonctionnelles, 35033 Rennes Cedex 9, France; INSERM, CIC 1414 "Ischemia, Macro and Microcirculation" Group, 35033 Rennes Cedex 9, France
| | - Pierre Abraham
- University of Angers, CHU of Angers, Laboratoire de Physiologie et d'Explorations Vasculaires, UMR CNRS 6214-INSERM 1083, 49033 Angers Cedex 01, France
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Multiscale Compression Entropy of Microvascular Blood FlowSignals: Comparison of Results from Laser Speckle Contrastand Laser Doppler Flowmetry Data in Healthy Subjects. ENTROPY 2014. [DOI: 10.3390/e16115777] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Domsic RT, Dezfulian C, Shoushtari A, Ivanco D, Kenny E, Kwoh CK, Medsger TA, Champion HC. Endothelial dysfunction is present only in the microvasculature and microcirculation of early diffuse systemic sclerosis patients. Clin Exp Rheumatol 2014; 32:S-160. [PMID: 25372799 PMCID: PMC4317362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 04/30/2014] [Indexed: 06/04/2023]
Abstract
OBJECTIVES To evaluate endothelial function and vascular stiffness in large, medium, small and microcirculatory blood vessels in very early diffuse systemic sclerosis (SSc). METHODS We studied consecutive early diffuse SSc patients, defined as <2 years from first SSc symptom who did not have a prior cardiovascular event. Age, gender and race-matched controls were recruited. All underwent assessment of aortic pulse wave velocity (PWV), carotid intima-media thickness (IMT) brachial flow-mediated dilation (FMD), digital peripheral artery tonometer (EndoPAT) assessment and laser speckle contrast imaging (LSCI). RESULTS Fifteen early diffuse SSc and controls were evaluated. The average age was 49 years, 63% were female and 93% were Caucasian. There were no differences in body mass index, hypertension, diabetes or hyperlipidaemia between controls and SSc patients. Mean SSc disease duration was 1.3 years. In the large central vessels, there was no difference in aortic PWV (p=0.71) or carotid IMT (p=0.92) between SSc patients and controls. Similarly, there was no difference in endothelial dysfunction with brachial artery FMD after ischaemia (p=0.55) and nitroglycerin administration (p=0.74). There were significantly lower values for digital EndoPAT measures (p=0.0001) in SSc patients. LSCI revealed a distinct pattern of microcirculatory abnormalities in response to ischaemia in SSc patients compared to controls. Imaging demonstrated a blunted microcirculatory hyperaemia of the hand with greater subsequent response to nitroglycerin. CONCLUSIONS These findings suggest that the earliest endothelial changes occur in smaller arterioles and microvascular beds, but not in medium or macrovascular beds, in early diffuse SSc.
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Affiliation(s)
- R T Domsic
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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De Rosa S, Passafaro F, Polimeni A, Sorrentino S, Indolfi C. A novel quick and easy test for radial artery occlusion with the laser Doppler scan. JACC Cardiovasc Interv 2014; 7:e89-90. [PMID: 25086840 DOI: 10.1016/j.jcin.2013.11.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 11/08/2013] [Indexed: 12/01/2022]
Affiliation(s)
- Salvatore De Rosa
- Division of Cardiology, Department of Medical and Surgical Sciences, Magna Graecia University, Catanzaro, Italy
| | - Francesco Passafaro
- Division of Cardiology, Department of Medical and Surgical Sciences, Magna Graecia University, Catanzaro, Italy
| | - Alberto Polimeni
- Division of Cardiology, Department of Medical and Surgical Sciences, Magna Graecia University, Catanzaro, Italy
| | - Sabato Sorrentino
- Division of Cardiology, Department of Medical and Surgical Sciences, Magna Graecia University, Catanzaro, Italy
| | - Ciro Indolfi
- Division of Cardiology, Department of Medical and Surgical Sciences, Magna Graecia University, Catanzaro, Italy; URT-CNR, Magna Graecia University, Catanzaro, Italy.
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Li CH, Wang HD, Hu JJ, Ge XL, Pan K, Zhang AQ, Dong JH. The monitoring of microvascular liver blood flow changes during ischemia and reperfusion using laser speckle contrast imaging. Microvasc Res 2014; 94:28-35. [DOI: 10.1016/j.mvr.2014.04.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Revised: 04/14/2014] [Accepted: 04/24/2014] [Indexed: 11/30/2022]
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Gaillard-Bigot F, Roustit M, Blaise S, Gabin M, Cracowski C, Seinturier C, Imbert B, Carpentier P, Cracowski JL. Abnormal amplitude and kinetics of digital postocclusive reactive hyperemia in systemic sclerosis. Microvasc Res 2014; 94:90-5. [PMID: 24990822 DOI: 10.1016/j.mvr.2014.05.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 05/23/2014] [Accepted: 05/26/2014] [Indexed: 12/01/2022]
Abstract
OBJECTIVES Postocclusive reactive hyperemia is mediated by two major mediators: sensory nerves and endothelium-derived hyperpolarizing factors. We hypothesized that the skin microvascular response to 5 min ischemia would differ depending upon the hand location in patients with systemic sclerosis (SSc), primary Raynaud's phenomenon (PRP) and healthy controls. METHODS Fifteen patients with SSc, 15 sex- and age-matched patients with PRP and healthy controls were enrolled. Their right hands were subjected to 5 min ischemia followed by a postocclusive hyperemia test, with local microcirculation monitoring by laser speckle contrast imaging on the dorsal face of the hand. RESULTS Postocclusive reactive hyperemia was abnormal in terms of peak and area under the curve (AUC) on all fingers except the thumb in patients with SSc and PRP compared with controls. In contrast, the kinetics of the response was longer only in SSc patients, with mean (SD) time to peak on the index, middle and ring finger were respectively 72 (58), 73 (51) and 67 (47) s for SSc; 40 (20), 40 (20) and 36 (19) s for PRP; and 34 (30), 34 (30) and 29 (24) s for controls (P=0.009 for interaction). CONCLUSIONS We observed decreased distal digital microvascular perfusion following 5 min of ischemia in patients presenting with PRP or SSc, while the kinetics was prolonged only in SSc. A dynamic assessment of digital skin blood flow using laser speckle contrast imaging following 5 min ischemia could be used as a tool to assess microvascular abnormalities in patients with Raynaud's phenomenon secondary to SSc.
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Affiliation(s)
- F Gaillard-Bigot
- Univ. Grenoble Alpes, HP2, 38000, France; Clinical Pharmacology Unit, Inserm CIC003, Grenoble University Hospital, 38043, France
| | - M Roustit
- Univ. Grenoble Alpes, HP2, 38000, France; Clinical Pharmacology Unit, Inserm CIC003, Grenoble University Hospital, 38043, France
| | - S Blaise
- Univ. Grenoble Alpes, HP2, 38000, France; Vascular Medicine Department, Grenoble University Hospital, 38043, France
| | - M Gabin
- Univ. Grenoble Alpes, HP2, 38000, France
| | - C Cracowski
- Univ. Grenoble Alpes, HP2, 38000, France; Clinical Pharmacology Unit, Inserm CIC003, Grenoble University Hospital, 38043, France
| | - C Seinturier
- Vascular Medicine Department, Grenoble University Hospital, 38043, France
| | - B Imbert
- Vascular Medicine Department, Grenoble University Hospital, 38043, France
| | - P Carpentier
- Vascular Medicine Department, Grenoble University Hospital, 38043, France
| | - J L Cracowski
- Univ. Grenoble Alpes, HP2, 38000, France; Clinical Pharmacology Unit, Inserm CIC003, Grenoble University Hospital, 38043, France.
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Puissant C, Abraham P, Durand S, Humeau-Heurtier A, Faure S, Leftheriotis G, Mahé G. Assessment of endothelial function by acetylcholine iontophoresis: Impact of inter-electrode distance and electrical cutaneous resistance. Microvasc Res 2014; 93:114-8. [DOI: 10.1016/j.mvr.2014.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 04/02/2014] [Accepted: 04/04/2014] [Indexed: 11/25/2022]
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Puissant C, Abraham P, Durand S, Humeau-Heurtier A, Faure S, Rousseau P, Mahé G. [Endothelial function: role, assessment and limits]. ACTA ACUST UNITED AC 2013; 39:47-56. [PMID: 24355615 DOI: 10.1016/j.jmv.2013.11.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 10/24/2013] [Indexed: 12/16/2022]
Abstract
For several years, detecting and preventing cardiovascular diseases have become a major issue. Different methods have been developed to evaluate endothelial function. Endothelial dysfunction is one of the first steps leading to atherosclerosis. This review presents an insight into endothelial function, the interests of its assessment and methods for studying endothelial function. To date, the vascular endothelium must be considered as a specific organ with its own functions that contribute to the homeostasis of the cardiovascular system. Endothelial dysfunction typically corresponds to a decrease of nitric oxide NO bioavailability. Biological or physico-chemical methods may be used to assess dysfunction. Biological methods allow measuring NO metabolites and pro-inflammatory and vasoconstrictor mediators released by the endothelium. The physico-chemical methods include intra-coronary injections, plethysmography, flow-mediated dilation (FMD), digital plethysmography and optical techniques using laser (laser Doppler single-point, laser Doppler imager, laser speckle contrast imaging) that can be coupled with provocation tests (iontophoresis, microdialysis, post-ischemic hyperemia, local heating). The principle of each technique and its use in clinical practice are discussed. Studying endothelial dysfunction is a particularly promising field because of new drugs being developed. Nevertheless, assessment methodology still needs further development to enable reliable, non-invasive, reproducible, and inexpensive ways to analyze endothelial dysfunction.
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Affiliation(s)
- C Puissant
- Service des explorations fonctionnelles vasculaires, centre hospitalier universitaire, 49933 Angers cedex 9, France
| | - P Abraham
- Service des explorations fonctionnelles vasculaires, centre hospitalier universitaire, 49933 Angers cedex 9, France; Biologie neurovasculaire et mitochondriale intégrée (BNMI) - unité mixte UMR CNRS 6214/Inserm U 1083, faculté de médecine, LUNAM université, 49045 Angers, France
| | - S Durand
- EA 4334 motricity, interactions, and performance, LUNAM université, université du Maine, 72085 Le Mans cedex 9, France
| | - A Humeau-Heurtier
- Laboratoire d'ingénierie des systèmes automatisés (LISA), LUNAM université, université d'Angers, 49000 Angers, France
| | - S Faure
- Stress oxydant et pathologies métaboliques (SOPAM), Inserm U1063, LUNAM université, université d'Angers, 40045 Angers, France
| | - P Rousseau
- Département de chirurgie plastique, centre hospitalier universitaire, 49933 Angers cedex 9, France
| | - G Mahé
- Biologie neurovasculaire et mitochondriale intégrée (BNMI) - unité mixte UMR CNRS 6214/Inserm U 1083, faculté de médecine, LUNAM université, 49045 Angers, France; Pôle imagerie médicale, centre hospitalier universitaire Pontchaillou, 2, avenue du Pr-Léon-Bernard, 35033 Rennes cedex 9, France.
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Humeau-Heurtier A, Abraham P, Mahe G. Linguistic Analysis of Laser Speckle Contrast Images Recorded at Rest and During Biological Zero: Comparison With Laser Doppler Flowmetry Data. IEEE TRANSACTIONS ON MEDICAL IMAGING 2013; 32:2311-2321. [PMID: 24058017 DOI: 10.1109/tmi.2013.2281620] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Laser speckle contrast imaging (LSCI) is a newly commercialized imaging modality to monitor microvascular blood flow. Contrary to the well-known laser Doppler flowmetry (LDF), LSCI has the advantage of giving a full-field image of surface blood flow using simple instrumentation. However, laser speckle contrast images are not fully understood yet and their link with LDF signals still has to be studied. To quantify the similarity between LSCI and LDF symbolic sequences, we propose to use, for the first time, the index adapted from linguistic analysis and information theory proposed by Yang For this purpose, LSCI and LDF data were recorded simultaneously on the forearm of healthy subjects, at rest and during a vascular occlusion (biological zero). We show that there are different dynamical patterns for LSCI and LDF data, and the distances between these patterns differ through the space scales explored. Moreover, our results suggest that these different dynamical patterns could be linked to blood flow. The quantitative metric used herein therefore provides new information on LSCI and brings knowledge on links between LSCI and LDF.
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