51
|
Correction for tissue optical properties enables quantitative skin fluorescence measurements using multi-diameter single fiber reflectance spectroscopy. J Dermatol Sci 2015; 79:64-73. [PMID: 25911633 DOI: 10.1016/j.jdermsci.2015.03.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 02/18/2015] [Accepted: 03/23/2015] [Indexed: 11/21/2022]
Abstract
BACKGROUND AND OBJECTIVE Fluorescence measurements in the skin are very much affected by absorption and scattering but existing methods to correct for this are not applicable to superficial skin measurements. STUDY DESIGN/MATERIALS AND METHODS The first use of multiple-diameter single fiber reflectance (MDSFR) and single fiber fluorescence (SFF) spectroscopy in human skin was investigated. MDSFR spectroscopy allows a quantification of the full optical properties in superficial skin (μa, μs' and γ), which can next be used to retrieve the corrected - intrinsic - fluorescence of a fluorophore Qμa,x(f). Our goal was to investigate the importance of such correction for individual patients. We studied this in 22 patients undergoing photodynamic therapy (PDT) for actinic keratosis. RESULTS The magnitude of correction of fluorescence was around 4 (for both autofluorescence and protoporphyrin IX). Moreover, it was variable between patients, but also within patients over the course of fractionated aminolevulinic acid PDT (range 2.7-7.5). Patients also varied in the amount of protoporphyrin IX synthesis, photobleaching percentages and resynthesis (>100× difference between the lowest and highest PpIX synthesis). The autofluorescence was lower in actinic keratosis than contralateral normal skin (0.0032 versus 0.0052; P<0.0005). CONCLUSIONS Our results clearly demonstrate the importance of correcting the measured fluorescence for optical properties, because these vary considerably between individual patients and also during PDT. Protoporphyrin IX synthesis and photobleaching kinetics allow monitoring clinical PDT which facilitates individual-based PDT dosing and improvement of clinical treatment protocols. Furthermore, the skin autofluorescence can be relevant for diagnostic use in the skin, but it may also be interesting because of its association with several internal diseases.
Collapse
|
52
|
Gangemi S, Minciullo PL, Magliacane D, Saitta S, Loffredo S, Saija A, Cristani M, Marone G, Triggiani M. Oxidative stress markers are increased in patients with mastocytosis. Allergy 2015; 70:436-42. [PMID: 25630934 DOI: 10.1111/all.12571] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2014] [Indexed: 12/27/2022]
Abstract
BACKGROUND Mastocytosis is characterized by clonal proliferation of mast cells limited to the skin (cutaneous mastocytosis: CM and mastocytosis in the skin: MIS) and/or involving internal organs (systemic mastocytosis: SM). Oxidative stress occurring in various inflammatory and neoplastic disorders causes molecular damage with the production of advanced oxidation protein products (AOPPs) and advanced glycation end products (AGEs). We evaluated these markers of oxidative stress in patients with CM/MIS and SM and correlated their levels with the presence of symptoms related to mast cell activation. METHODS Serum levels of AOPPs and AGEs in 34 patients with mastocytosis (23 CM/MIS and 11 SM) and 27 healthy controls were measured by spectrofluorimetric and spectrophotometric methods. Serum tryptase levels were measured by immunofluorescence. RESULTS Serum AOPPs, but not AGEs, were significantly higher in patients with mastocytosis as compared to healthy controls. While serum tryptase levels were higher in patients with SM as compared to those with CM/MIS, there was no difference in AOPP and AGE concentrations between these two groups of patients. Patients with recurrent mediator-related symptoms had lower AOPPs and AGEs as compared to patients without symptoms. AOPPs and AGEs were inversely correlated with the severity of symptoms, and in patients with symptoms, AOPPs correlated with tryptase levels. DISCUSSION Our data show that mastocytosis is associated with a state of increased oxidative stress that, in patients with mediator-related symptoms, correlates with mast cell burden as assessed by tryptase. Patients with symptoms presumably have an adaptive response resulting in lower blood levels of AOPPs and AGEs.
Collapse
Affiliation(s)
- S. Gangemi
- Operative Unit of Allergy and Clinical Immunology; Department of Clinical and Experimental Medicine; University of Messina; Messina Italy
- Institute of Clinical Physiology; IFC CNR; Messina Unit; Messina Italy
| | - P. L. Minciullo
- Operative Unit of Allergy and Clinical Immunology; Department of Clinical and Experimental Medicine; University of Messina; Messina Italy
| | - D. Magliacane
- Division of Immunopathology and Respiratory Disease; Battipaglia Hospital; Salerno Italy
| | - S. Saitta
- Operative Unit of Allergy and Clinical Immunology; Department of Clinical and Experimental Medicine; University of Messina; Messina Italy
| | - S. Loffredo
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI); University of Naples Federico II; Naples Italy
| | - A. Saija
- Department of Drug Sciences and Health Products; University of Messina; Messina Italy
| | - M. Cristani
- Department of Drug Sciences and Health Products; University of Messina; Messina Italy
| | - G. Marone
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI); University of Naples Federico II; Naples Italy
| | - M. Triggiani
- Division of Allergy and Clinical Immunology; University of Salerno; Salerno Italy
| |
Collapse
|
53
|
Gurol G, Ciftci IH, Harman H, Karakece E, Kamanli A, Tekeoglu I. Roles of claudin-5 and von Willebrand factor in patients with rheumatoid arthritis. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:1979-1984. [PMID: 25973092 PMCID: PMC4396339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 01/28/2015] [Indexed: 06/04/2023]
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory disorder that affects approximately 1% of the world's population. The pathogenesis of RA is not understood fully. It is assumed that endothelial function is associated with the proinflammatory state of RA. Endothelial dysfunction/activation reflects the increased level of von Willebrand factor (vWF) and a shift toward prothrombotic activity of the endothelium. The present study was performed to investigate the possible relationships between vWF and claudin-5 and the level of disease activity in patients with RA. The study population was divided into four groups according to the disease activity score in 28 joints (DAS28): remission group (RG), 18 patients (DAS28 < 2.6); low disease activity group (LDAG), 23 patients (DAS28 > 2.6-3.2); moderate disease activity (MDAG), 23 patients (DAS28 > 3.2-5.1); high disease activity group (HDAG), 14 patients (DAS28 > 5.1); and control group (CG), 10 healthy subjects. Claudin-5 and vWF assessment were derived from serum samples gathered from the patients known to have RF and anti-CCP titers in the normal ranges. A high positive association of claudin-5 and vWF with the MDAG was observed (P < 0.001). The results of our study indicated that the relationship between vWF and claudin-5, which are indicators of endothelial cell dysfunction and tight junction activity, may be a predictor of disease activity. Further studies are required to investigate these pathways to shed light on the roles of claudin-5 and vWF in the progression of inflammation and other vascular conditions.
Collapse
Affiliation(s)
- Gönül Gurol
- Department of Physiology, Faculty of Medicine, Sakarya University Sakarya, Turkey
| | - Ihsan Hakkı Ciftci
- Department of Microbiology, Faculty of Medicine, Sakarya University Sakarya, Turkey
| | - Halil Harman
- Department of Rheumatology/Rehabilitation, Faculty of Medicine, Sakarya University Sakarya, Turkey
| | - Engin Karakece
- Department of Microbiology, Faculty of Medicine, Sakarya University Sakarya, Turkey
| | - Ayhan Kamanli
- Department of Rheumatology/Rehabilitation, Faculty of Medicine, Sakarya University Sakarya, Turkey
| | - Ibrahim Tekeoglu
- Department of Rheumatology/Rehabilitation, Faculty of Medicine, Sakarya University Sakarya, Turkey
| |
Collapse
|
54
|
de Groot L, Jager NA, Westra J, Smit AJ, Kallenberg CGM, Posthumus MD, Bijl M. Does reduction of disease activity improve early markers of cardiovascular disease in newly diagnosed rheumatoid arthritis patients? Rheumatology (Oxford) 2015; 54:1257-61. [DOI: 10.1093/rheumatology/keu459] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Indexed: 01/24/2023] Open
|
55
|
Assessment of the usefulness of skin autofluorescence as an indicator of disease activity and of the risk of developing diabetes in patients suffering from rheumatoid arthritis. Reumatologia 2015; 53:247-51. [PMID: 27407255 PMCID: PMC4847314 DOI: 10.5114/reum.2015.55827] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 11/07/2015] [Indexed: 11/17/2022] Open
Abstract
Objectives Diabetes develops much more often in patients suffering from rheumatoid arthritis (RA) than in healthy population. One of the parameters which allow to evaluate the risk of developing diabetes and cardiovascular diseases (CVD) is the level of advanced glycation end products (AGE) in the skin. In patients suffering from RA, an increase in AGE level may be also linked with the course of the underlying disease. The aim of the study was to evaluate the correlation between the AGE level and the course of RA as well as other risk factors for the development of diabetes and CVD. Material and methods The study included 148 patients divided into three groups: group I – patients with RA (n = 102, 79 F/23 M), group II – patients with RA and diabetes (n = 21, 14 F/7 M), group III – healthy individuals (n = 25, 16 F/9 M). Each patient underwent a skin autofluorescence signal (SAF) examination with an AGE Reader, which allows the assessment of AGE level, as well as being subjected to the laboratory tests panel. Additionally, patients from group I and II have had their DAS28 (ESR) indicator calculated. Results In groups I, II, and III, the respective mean SAF values, expressed in arbitrary units [au], were to 2.54, 2.74, and 1.96 au. Between-group differences in terms of mean SAF values were statistically significant (p < 0.05). Conclusions Significantly higher mean SAF values in groups I and II as compared to group III suggest that the increase in the AGE level in patients with RA is linked with the underlying disease and does not have to correspond with the real risk of diabetes and CVD. In conclusion, despite the known limitations of the technique, measuring AGE levels allows for closer monitoring of RA patients who are at a higher risk of developing diabetes.
Collapse
|
56
|
Chalew S. Only skin deep? J Diabetes Complications 2014; 28:583-4. [PMID: 24970675 DOI: 10.1016/j.jdiacomp.2014.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 04/10/2014] [Indexed: 11/27/2022]
Affiliation(s)
- Stuart Chalew
- Department of Endocrinology and Diabetes, The Children's Hospital of New Orleans, 200 Henry Clay Avenue, New Orleans, LA 70118, USA.
| |
Collapse
|
57
|
Indurthi VS, Leclerc E, Vetter SW. Calorimetric investigation of diclofenac drug binding to a panel of moderately glycated serum albumins. Eur J Pharm Sci 2014; 59:58-68. [DOI: 10.1016/j.ejps.2014.04.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 04/01/2014] [Accepted: 04/02/2014] [Indexed: 01/27/2023]
|
58
|
Schmidt AM. Skin autofluorescence, 5-year mortality, and cardiovascular events in peripheral arterial disease: all that glitters is surely not gold. Arterioscler Thromb Vasc Biol 2014; 34:697-9. [PMID: 24665121 PMCID: PMC3998091 DOI: 10.1161/atvbaha.114.303419] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ann Marie Schmidt
- From the Diabetes Research Program, New York University Langone Medical Center, New York, NY
| |
Collapse
|
59
|
Stirban A, Gawlowski T, Roden M. Vascular effects of advanced glycation endproducts: Clinical effects and molecular mechanisms. Mol Metab 2013; 3:94-108. [PMID: 24634815 DOI: 10.1016/j.molmet.2013.11.006] [Citation(s) in RCA: 215] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Revised: 11/17/2013] [Accepted: 11/18/2013] [Indexed: 12/17/2022] Open
Abstract
The enhanced generation and accumulation of advanced glycation endproducts (AGEs) have been linked to increased risk for macrovascular and microvascular complications associated with diabetes mellitus. AGEs result from the nonenzymatic reaction of reducing sugars with proteins, lipids, and nucleic acids, potentially altering their function by disrupting molecular conformation, promoting cross-linking, altering enzyme activity, reducing their clearance, and impairing receptor recognition. AGEs may also activate specific receptors, like the receptor for AGEs (RAGE), which is present on the surface of all cells relevant to atherosclerotic processes, triggering oxidative stress, inflammation and apoptosis. Understanding the pathogenic mechanisms of AGEs is paramount to develop strategies against diabetic and cardiovascular complications.
Collapse
Affiliation(s)
- Alin Stirban
- Profil Institut für Stoffwechselforschung GmbH, Hellersbergstrasse 9, 41460 Neuss, Germany
| | - Thomas Gawlowski
- University of Paderborn, Warburger Str. 100, 33098 Paderborn, Germany
| | - Michael Roden
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich Heine University, 40225 Düsseldorf, Germany ; Division of Endocrinology and Diabetology, University Clinics Düsseldorf, 40225 Düsseldorf, Germany
| |
Collapse
|
60
|
Current World Literature. Curr Opin Rheumatol 2013; 25:398-409. [DOI: 10.1097/bor.0b013e3283604218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
61
|
Current world literature. Curr Opin Lipidol 2013; 24:86-94. [PMID: 23298962 DOI: 10.1097/mol.0b013e32835cb4f6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
62
|
Škrha J, Šoupal J, Loni Ekali G, Prázný M, Kalousová M, Kvasnička J, Landová L, Zima T, Škrha J. Skin autofluorescence relates to soluble receptor for advanced glycation end-products and albuminuria in diabetes mellitus. J Diabetes Res 2013; 2013:650694. [PMID: 23671885 PMCID: PMC3647585 DOI: 10.1155/2013/650694] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 02/12/2013] [Accepted: 02/14/2013] [Indexed: 12/28/2022] Open
Abstract
The aim of this study was to compare skin autofluorescence caused by advanced glycation end-products (AGEs) with biochemical markers of endothelial dysfunction and soluble receptor for AGEs (sRAGE) in patients with diabetes. Skin autofluorescence (AF) assessed by AGE-Reader was evaluated with sRAGE and other biochemical parameters in 88 patients with diabetes (47 Type 1/T1DM/ and 41 Type 2/T2DM/) and 20 controls. Skin AF was significantly higher in T1DM and T2DM in comparison to controls (2.39 ± 0.54, 2.63 ± 0.73 versus 1.96 ± 0.33 AU; P < 0.0001). Positive correlation of AF with sRAGE was detected in T1DM and T2DM (r = 0.37, P < 0.02 and r = 0.60, P < 0.0001), but not in controls. Significantly higher AF values were found in patients with positive albuminuria as compared to those with normal albuminuria. Similarly, higher AF was detected in patients with endothelial dysfunction expressed by vWF, ICAM-1, and VCAM-1. Multiple regression analysis revealed independent association of skin AF with age, sRAGE, and albumin-creatinine ratio in patients with diabetes (R (2) = 0.38). Our study confirms that AF is elevated in patients with diabetes, especially with positive albuminuria and endothelial dysfunction. The strong and independent relationship between AF and sRAGE supports the idea that AF may reflect AGEs/RAGE interactions. The exact mechanism remains to be established.
Collapse
Affiliation(s)
- J. Škrha
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University in Prague, General University Hospital in Prague, 128 08 Prague 2, Czech Republic
- 3rd Department of Internal Medicine, First Faculty of Medicine, Charles University in Prague, General University Hospital in Prague, 128 08 Prague 2, Czech Republic
- *J. Škrha Jr.:
| | - J. Šoupal
- 3rd Department of Internal Medicine, First Faculty of Medicine, Charles University in Prague, General University Hospital in Prague, 128 08 Prague 2, Czech Republic
| | - G. Loni Ekali
- Department of Internal Medicine, Ayos District Hospital, Yaounde, Cameroon
| | - M. Prázný
- 3rd Department of Internal Medicine, First Faculty of Medicine, Charles University in Prague, General University Hospital in Prague, 128 08 Prague 2, Czech Republic
| | - M. Kalousová
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University in Prague, General University Hospital in Prague, 128 08 Prague 2, Czech Republic
| | - J. Kvasnička
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University in Prague, General University Hospital in Prague, 128 08 Prague 2, Czech Republic
| | - L. Landová
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University in Prague, General University Hospital in Prague, 128 08 Prague 2, Czech Republic
| | - T. Zima
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University in Prague, General University Hospital in Prague, 128 08 Prague 2, Czech Republic
| | - J. Škrha
- 3rd Department of Internal Medicine, First Faculty of Medicine, Charles University in Prague, General University Hospital in Prague, 128 08 Prague 2, Czech Republic
| |
Collapse
|