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Bao J, Tian L, Meng Y, Wu B, Wang J, He J, Shao Q, Wang C, Jie Y, Zhang L. Total IgE in tears accurately reflects the severity and predicts the prognosis of seasonal allergic conjunctivitis. Clin Transl Allergy 2022; 12:e12139. [PMID: 35344294 PMCID: PMC8967263 DOI: 10.1002/clt2.12139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/09/2022] [Accepted: 03/11/2022] [Indexed: 11/28/2022] Open
Abstract
Background Although immunoglobulin E (IgE) increases significantly in tears and serum during seasonal allergic conjunctivitis (SAC), it is unclear whether tear total IgE can reflect the severity and prognosis of SAC more accurately than serum total IgE. We aimed to investigate the usefulness of measuring the total IgE in tears to evaluate the severity and determine the treatment of SAC. Methods This prospective, nonrandomized study involved 55 patients with SAC and 10 age‐ and sex‐matched healthy controls. Serum and tears were collected before and after treatment to analyze the total IgE. SAC patients received the same topical anti‐allergy treatment and were followed‐up every 2 weeks for 1 month. The relationship of tear and serum total IgE concentrations with pollen concentrations and symptom severity before and after treatment was assessed. Results The total IgE concentration in tears was higher in SAC patients than in healthy participants with significant correlations between tear and serum total IgE concentrations. The total IgE concentration in tears, but not in serum, correlated with the pollen concentration and severity of ocular symptoms and reactions in SAC. Treatment‐associated improvements in symptoms and reactions in SAC correlated with decreased concentrations of the tear total IgE. Patients with disease recurrence following treatment demonstrated significantly higher tear total IgE concentrations than patients with no recurrence. Conclusion The total tear IgE level can indicate the severity and predict the prognosis of SAC more accurately than the serum total IgE.
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Affiliation(s)
- Jiayu Bao
- Beijing Institute of Ophthalmology, Beijing TongRen Eye Center, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Lei Tian
- Beijing Institute of Ophthalmology, Beijing TongRen Eye Center, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yifan Meng
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China
| | - Binge Wu
- Department of Ophthalmology, the Second Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Beijing, China
| | - Jingyi Wang
- Beijing Institute of Ophthalmology, Beijing TongRen Eye Center, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jing He
- Department of Ophthalmology, the Second Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Beijing, China
| | - Qiyan Shao
- Department of Ophthalmology, the Second Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Beijing, China
| | - Chengshuo Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China
| | - Ying Jie
- Beijing Institute of Ophthalmology, Beijing TongRen Eye Center, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Luo Zhang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing, China.,Department of Allergy, Beijing TongRen Hospital Capital Medical University, Beijing, China
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Reddy VS, Agarwal B, Ye Z, Zhang C, Roy K, Chinnappan A, Narayan RJ, Ramakrishna S, Ghosh R. Recent Advancement in Biofluid-Based Glucose Sensors Using Invasive, Minimally Invasive, and Non-Invasive Technologies: A Review. Nanomaterials (Basel) 2022; 12:1082. [PMID: 35407200 PMCID: PMC9000490 DOI: 10.3390/nano12071082] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/14/2022] [Accepted: 03/22/2022] [Indexed: 02/06/2023]
Abstract
Biosensors have potentially revolutionized the biomedical field. Their portability, cost-effectiveness, and ease of operation have made the market for these biosensors to grow rapidly. Diabetes mellitus is the condition of having high glucose content in the body, and it has become one of the very common conditions that is leading to deaths worldwide. Although it still has no cure or prevention, if monitored and treated with appropriate medication, the complications can be hindered and mitigated. Glucose content in the body can be detected using various biological fluids, namely blood, sweat, urine, interstitial fluids, tears, breath, and saliva. In the past decade, there has been an influx of potential biosensor technologies for continuous glucose level estimation. This literature review provides a comprehensive update on the recent advances in the field of biofluid-based sensors for glucose level detection in terms of methods, methodology and materials used.
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Affiliation(s)
- Vundrala Sumedha Reddy
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
| | - Bhawana Agarwal
- Department of Chemical Engineering, BITS Pilani-Hyderabad Campus, Hyderabad 500078, India;
| | - Zhen Ye
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
| | - Chuanqi Zhang
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
| | - Kallol Roy
- Centre for Advanced 2D Materials, National University of Singapore, Singapore 117546, Singapore;
| | - Amutha Chinnappan
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
| | - Roger J. Narayan
- Joint Department of Biomedical Engineering, North Carolina State University, Raleigh, NC 27695, USA;
| | - Seeram Ramakrishna
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
| | - Rituparna Ghosh
- Centre for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore; (V.S.R.); (Z.Y.); (C.Z.); (A.C.)
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53
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Guba A, Bába O, Tőzsér J, Csősz É, Kalló G. Fast and Sensitive Quantification of AccQ-Tag Derivatized Amino Acids and Biogenic Amines by UHPLC-UV Analysis from Complex Biological Samples. Metabolites 2022; 12:272. [PMID: 35323715 DOI: 10.3390/metabo12030272] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 03/18/2022] [Accepted: 03/20/2022] [Indexed: 01/27/2023] Open
Abstract
Metabolomic analysis of different body fluids bears high importance in medical sciences. Our aim was to develop and validate a fast UHPLC-UV method for the analysis of 33 amino acids and biogenic amines from complex biological samples. AccQ-Tag derivatization was conducted on target molecules and the derivatized targets were analyzed by UHPLC-UV. The detection of the analytes was carried out with UV analysis and by Selected Reaction Monitoring (SRM)-based targeted mass spectrometry. The method was validated according to the FDA guidelines. Serum and non-stimulated tear samples were collected from five healthy individuals and the samples were analyzed by the method. The method was successfully validated with appropriate accuracy and precision for all 33 biomolecules. A total of 29 analytes were detected in serum samples and 26 of them were quantified. In the tears, 30 amino acids and biogenic amines were identified and 20 of them were quantified. The developed and validated UHPLC-UV method enables the fast and precise analysis of amino acids and biogenic amines from complex biological samples.
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Fonseca RLD, Santana MIS, Lobo-Jr AR, Martins BDC, Galera PD. Anatomy of the nasolacrimal duct in Persian cats determined by computed tomographic dacryocystography. Vet Ophthalmol 2022; 25 Suppl 1:25-36. [PMID: 35226782 DOI: 10.1111/vop.12980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVE This study sought to describe the anatomical characteristics of the nasolacrimal duct of Persian cats as observed by computed tomographic dacryocystography. ANIMAL STUDIED Ten cats weighing 3-6 kg (three live cats and seven cadaveric specimens). PROCEDURES The animals were submitted to bilateral computed tomographic dacryocystography, totaling 20 nasolacrimal ducts. Dorsal, sagittal, and transverse planes were studied. Two additional skulls were also dissected following latex injection into the nasolacrimal duct. The length and width of the nasolacrimal duct and lacrimal canaliculi, and the distance between the nasolacrimal duct and the root of the upper canine tooth at the point of closest proximity were measured. RESULTS The nasolacrimal duct followed a convoluted course, particularly in the middle and rostral portions. Duct stenosis (width reduction equal to or >75%) and dilations (width increase equal to or >50%) were also detected, particularly in the rostral portion. Nasolacrimal duct length and width ranged from 1.3 to 1.5 cm and 1.5 to 2.3 mm, respectively. Mean lacrimal canaliculus length and width corresponded to 3.1 mm and 0.4 mm, respectively. Mean distance from the nasolacrimal duct to the canine tooth was 2.4 mm. The root of this tooth interfered with the course of the nasolacrimal duct. CONCLUSION This study provided anatomical information for clinical assessment of the nasolacrimal drainage system in Persian cats.
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Affiliation(s)
- Rogério Lopes da Fonseca
- Comparative Ophthalmology Laboratory, School of Agricultural Sciences and Veterinary Medicine, University of Brasília, Brasília, Brazil
| | - Marcelo Ismar Silva Santana
- Wild Animal Anatomy Laboratory, School of Agricultural Sciences and Veterinary Medicine, University of Brasília, Brasília, Brazil
| | - Adalfredo Rocha Lobo-Jr
- Institute of Agricultural Sciences, Federal University of Jequitinhonha and Mucuri Valleys, Unaí, Brazil
| | - Bianca da Costa Martins
- Department of Veterinary Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, USA
| | - Paula D Galera
- Comparative Ophthalmology Laboratory, School of Agricultural Sciences and Veterinary Medicine, University of Brasília, Brasília, Brazil
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Fagehi R, El-Hiti GA, Alanazi A, Aldawood MA, Abusharha A, Alanazi MA, Masmali AM, Almubrad T. Improving tear ferning patterns collected from goats and camels after adding various electrolyte solutions. ADV CLIN EXP MED 2022; 31:635-642. [PMID: 35195959 DOI: 10.17219/acem/146390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND Good quality of tear film is essential for healthy vision in both animals and humans. Therefore, improving the quality of tears through the addition of electrolytes is important. OBJECTIVES To assess the effect of adding various electrolyte solutions on tear ferning (TF) patterns collected from goats and camels. MATERIAL AND METHODS Tear samples (20 ƒÊL) were collected from 5 goats (2 males and 3 females; 3.4 }1.6 years) and 5 camels (2 males and 3 females; 4.0 }1.1 years) using microcapillary tubes. A tear sample (0.5 ƒÊL) from each animal was mixed with various volumes (0.5.5 ƒÊL) of each electrolyte solution to produce homogenous mixtures. A sample (1 ƒÊL) of each mixture was dried on a microscopic glass at 22°C with a humidity .40%. The obtained TF pattern was observed, graded and compared with those obtained for the corresponding pure tear samples. The effect of dilution using purified water on the TF patterns of animals was also tested. RESULTS The TF grades of animals were generally enhanced when mixed with electrolyte solutions. Specifically, the TF grade for tears collected from a goat was improved from 1.4 to 0.7 and to 0.8 when magnesium chloride hexahydrate and calcium chloride were added, respectively. Similarly, the TF grade for tears collected from a camel was improved from 1.8 to 0.9 and to 1.1, when calcium chloride and sodium dihydrogen phosphate solutions were added, respectively. CONCLUSIONS The TF grades of tears collected from both goats and camels were improved after adding electrolyte solutions, and they were most remarkably improved when divalent electrolyte solutions were added, followed by the hydrogenated electrolyte.
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Affiliation(s)
- Raied Fagehi
- Optometry Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Gamal A El-Hiti
- Optometry Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Abdulaziz Alanazi
- Optometry Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed A Aldawood
- Optometry Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ali Abusharha
- Optometry Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mana A Alanazi
- Optometry Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ali M Masmali
- Optometry Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Turki Almubrad
- Optometry Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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56
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Haddad F, Boudet S, Peyrodie L, Vandenbroucke N, Poupart J, Hautecoeur P, Chieux V, Forzy G. Oligoclonal Band Straightening Based on Optimized Hierarchical Warping for Multiple Sclerosis Diagnosis. Sensors (Basel) 2022; 22:s22030724. [PMID: 35161470 PMCID: PMC8839259 DOI: 10.3390/s22030724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 01/12/2022] [Indexed: 02/04/2023]
Abstract
The detection of immunoglobulin G (IgG) oligoclonal bands (OCB) in cerebrospinal fluid (CSF) by isoelectric focusing (IEF) is a valuable tool for the diagnosis of multiple sclerosis. Over the last decade, the results of our clinical research have suggested that tears are a non-invasive alternative to CSF. However, since tear samples have a lower IgG concentration than CSF, a sensitive OCB detection is therefore required. We are developing the first automatic tool for IEF analysis, with a view to speeding up the current visual inspection method, removing user variability, reducing misinterpretation, and facilitating OCB quantification and follow-up studies. The removal of band distortion is a key image enhancement step in increasing the reliability of automatic OCB detection. Here, we describe a novel, fully automatic band-straightening algorithm. The algorithm is based on a correlation directional warping function, estimated using an energy minimization procedure. The approach was optimized via an innovative coupling of a hierarchy of image resolutions to a hierarchy of transformation, in which band misalignment is corrected at successively finer scales. The algorithm’s performance was assessed in terms of the bands’ standard deviation before and after straightening, using a synthetic dataset and a set of 200 lanes of CSF, tear, serum and control samples on which experts had manually delineated the bands. The number of distorted bands was divided by almost 16 for the synthetic lanes and by 7 for the test dataset of real lanes. This method can be applied effectively to different sample types. It can realign minimal contrast bands and is robust for non-uniform deformations.
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Affiliation(s)
- Farah Haddad
- Biomedical Signal Processing Unit (UTSB), Lille Catholic University, F-59000 Lille, France;
- Faculty of Medicine and Midwifery (FMM), Lille Catholic Institute (ICL), F-59800 Lille, France; (P.H.); (G.F.)
- Laboratoire d’Informatique Signal et Image de la Côte d’Opale (LISIC), Université du Littoral Côte d’Opale (ULCO), F-62228 Calais, France;
- Correspondence: (F.H.); (S.B.)
| | - Samuel Boudet
- Biomedical Signal Processing Unit (UTSB), Lille Catholic University, F-59000 Lille, France;
- Faculty of Medicine and Midwifery (FMM), Lille Catholic Institute (ICL), F-59800 Lille, France; (P.H.); (G.F.)
- Correspondence: (F.H.); (S.B.)
| | - Laurent Peyrodie
- Biomedical Signal Processing Unit (UTSB), Lille Catholic University, F-59000 Lille, France;
- JUNIA-HEI (Hautes Études d’Ingénieur), F-59000 Lille, France
- Imagerie Multimodale Multiéchelle et Modélisation du Tissu Osseux et articulaire (I3MTO), Université d’Orléans, F-45067 Orléans, France
| | - Nicolas Vandenbroucke
- Laboratoire d’Informatique Signal et Image de la Côte d’Opale (LISIC), Université du Littoral Côte d’Opale (ULCO), F-62228 Calais, France;
| | - Julien Poupart
- Lille Catholic Hospital (GHICL), F-59160 Lomme, France; (J.P.); (V.C.)
| | - Patrick Hautecoeur
- Faculty of Medicine and Midwifery (FMM), Lille Catholic Institute (ICL), F-59800 Lille, France; (P.H.); (G.F.)
- Lille Catholic Hospital (GHICL), F-59160 Lomme, France; (J.P.); (V.C.)
| | - Vincent Chieux
- Lille Catholic Hospital (GHICL), F-59160 Lomme, France; (J.P.); (V.C.)
| | - Gérard Forzy
- Faculty of Medicine and Midwifery (FMM), Lille Catholic Institute (ICL), F-59800 Lille, France; (P.H.); (G.F.)
- Lille Catholic Hospital (GHICL), F-59160 Lomme, France; (J.P.); (V.C.)
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Akkurt Arslan M, Kolman I, Pionneau C, Chardonnet S, Magny R, Baudouin C, Brignole-Baudouin F, Kessal K. Proteomic Analysis of Tears and Conjunctival Cells Collected with Schirmer Strips Using timsTOF Pro: Preanalytical Considerations. Metabolites 2021; 12:2. [PMID: 35050124 DOI: 10.3390/metabo12010002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/16/2021] [Accepted: 12/17/2021] [Indexed: 12/24/2022] Open
Abstract
This study aimed to investigate the human proteome profile of samples collected from whole (W) Schirmer strips (ScS) and their two parts—the bulb (B) and the rest of the strip (R)—with a comprehensive proteomic approach using a trapped ion mobility mass spectrometer, the timsTOF Pro. Eight ScS were collected from two healthy subjects at four different visits to be separated into three batches, i.e., 4W, 4B, and 4R. In total, 1582 proteins were identified in the W, B, and R batches. Among all identified proteins, binding proteins (43.4%) and those with catalytic activity (42.2%) constituted more than 80% of the molecular functions. The most represented biological processes were cellular processes (31.2%), metabolic processes (20.8%), and biological regulation (13.1%). Enzymes were the most represented protein class (41%), consisting mainly of hydrolases (47.5%), oxidoreductases (22.1%), and transferases (16.7%). The bulb (B), which is in contact with the conjunctiva, might collect both tear and cell proteins and therefore promote the identification of more proteins. Processing B and R separately before mass spectrometry (MS) analysis, combined with the high data acquisition speed and the addition of ion-mobility-based separation in the timsTOF Pro, can bring a new dimension to biomarker investigations of a limited sample such as tear fluid.
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Das N, Menon NG, de Almeida LGN, Woods PS, Heynen ML, Jay GD, Caffery B, Jones L, Krawetz R, Schmidt TA, Dufour A. Proteomics Analysis of Tears and Saliva From Sjogren's Syndrome Patients. Front Pharmacol 2021; 12:787193. [PMID: 34950038 PMCID: PMC8689002 DOI: 10.3389/fphar.2021.787193] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/02/2021] [Indexed: 12/17/2022] Open
Abstract
Sjogren's syndrome (SS) is characterized by dysfunctional mucous membranes and dysregulated moisture-secreting glands resulting in various symptoms, including dry mouth and dry eyes. Here, we wanted to profile and compare the tear and saliva proteomes of SS patients to healthy controls. Tear and saliva samples were collected and subjected to an isotopic dimethylation labeling shotgun proteomics workflow to identify alterations in protein levels. In tear samples, we identified 83 upregulated and 112 downregulated proteins. Pathway enrichment analysis of the changing proteins by Metascape identified leukocyte transendothelial migration, neutrophil degranulation, and post-translation protein phosphorylation in tears of SS patients. In healthy controls' tears, an enrichment for proteins related to glycolysis, amino acid metabolism and apoptotic signaling pathway were identified. In saliva, we identified 108 upregulated and 45 downregulated proteins. Altered pathways in SS patients' saliva included cornification, sensory perception to taste and neutrophil degranulation. In healthy controls' saliva, an enrichment for proteins related to JAK-STAT signaling after interleukin-12 stimulation, phagocytosis and glycolysis in senescence were identified. Dysregulated protease activity is implicated in the initiation of inflammation and immune cell recruitment in SS. We identified 20 proteases and protease inhibitors in tears and 18 in saliva which are differentially expressed between SS patients and healthy controls. Next, we quantified endogenous proteoglycan 4 (PRG4), a mucin-like glycoprotein, in tear wash and saliva samples via a bead-based immune assay. We identified decreased levels of PRG4 in SS patients' tear wash compared to normal samples. Conversely, in saliva, we found elevated levels of PRG4 concentration and visualized PRG4 expression in human parotid gland via immunohistological staining. These findings will improve our mechanistic understanding of the disease and changes in SS patients' protein expression will help identify new potential drug targets. PRG4 is among the promising targets, which we identified here, in saliva, for the first time.
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Affiliation(s)
- Nabangshu Das
- Departments of Physiology and Pharmacology and Kinesiology, University of Calgary, Calgary, AB, Canada
- McCaig Institute, University of Calgary, Calgary, AB, Canada
| | - Nikhil G. Menon
- Department of Biomedical Engineering, School of Dental Medicine, UConn Health, Farmington, CT, United States
| | - Luiz G. N. de Almeida
- Departments of Physiology and Pharmacology and Kinesiology, University of Calgary, Calgary, AB, Canada
- McCaig Institute, University of Calgary, Calgary, AB, Canada
| | - Paige S. Woods
- Department of Emergency Medicine, Warren Alpert Medical School and School of Engineering, Brown University, Providence, RI, United States
| | - Miriam L. Heynen
- Centre for Ocular Research and Education (CORE), School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada
| | - Gregory D. Jay
- Department of Emergency Medicine, Warren Alpert Medical School and School of Engineering, Brown University, Providence, RI, United States
| | | | - Lyndon Jones
- Centre for Ocular Research and Education (CORE), School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada
| | - Roman Krawetz
- McCaig Institute, University of Calgary, Calgary, AB, Canada
- Department of Cell Biology and Anatomy, University of Calgary, Calgary, AB, Canada
| | - Tannin A. Schmidt
- McCaig Institute, University of Calgary, Calgary, AB, Canada
- Department of Biomedical Engineering, School of Dental Medicine, UConn Health, Farmington, CT, United States
| | - Antoine Dufour
- Departments of Physiology and Pharmacology and Kinesiology, University of Calgary, Calgary, AB, Canada
- McCaig Institute, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
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Abstract
INTRODUCTION Dry Eye Disease (DED) is defined as a multifactorial disease of the ocular surface characterized by a loss of homeostasis of the tear film, and a vicious cycle of inflammation on the ocular surface. Despite its high prevalence and standing as one of the most common eye conditions seen by practitioners, the current treatment options available to patients have not proven adequate. AREAS COVERED This review will discuss the burden of DED, its pathophysiology, as well as emerging therapies. These therapies include immunosuppressants, immunomodulators, anti-inflammatory drugs, and corticosteroids. The mechanisms of these drugs will be discussed, as well as their phase of development and results from recent clinical trials. The literature search was performed using PubMed, Cochrane Library, Web of Science, ClinicalTrials.gov, and the Springer AdisInsight database. EXPERT OPINION The optimal therapy for DED is associated with improved bioavailability, minimal ocular side effects, and effective dosing. The ideal treatment has not yet been established, but this paper outlines a number of promising therapies. Continued development of therapies targeting the inflammation cascade, as well as the establishment of objective markers to quantify DED severity, are important aspects in the progression of treatment.
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Affiliation(s)
- Lauren Mason
- Department of Ophthalmology, Eastern Virginia Medical School, Norfolk, Virginia, USA
| | - Saad Jafri
- Department of Ophthalmology, Eastern Virginia Medical School, Norfolk, Virginia, USA
| | - Isabelle Dortonne
- Department of Ophthalmology, Eastern Virginia Medical School, Norfolk, Virginia, USA
| | - John D Sheppard
- Department of Ophthalmology, Eastern Virginia Medical School, Norfolk, Virginia, USA
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Wagner R, Fieseler H, Kaiser M, Müller H, Mielenz N, Spilke J, Gottschalk J, Einspanier A, Palme R, Rizk A, Möbius G, Baumgartner W, Rachidi F, Starke A. [Cortisol concentrations in sheep before, during and after sham foot trimming on a tilt table - the suitability of different matrices]. SCHWEIZ ARCH TIERH 2021; 164:753-766. [PMID: 34758951 DOI: 10.17236/sat00325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
INTRODUCTION Matrices that can be collected non-invasively for quantification of a stress response in sheep have received little attention in the veterinary literature. This study examines the suitability of blood, tears and saliva for determining a stress response in sheep undergoing sham foot trimming on a tilt table. The cortisol concentration of blood, tears and saliva and the concentration of cortisol metabolites in faeces were measured in 13 healthy Meat Merino ewes once a day for six days. Sham foot trimming on a tilt table was used as the stressor and was done during a one-hour period on day 4; cortisol concentrations of blood and tears were measured at 0, 10, 20, 30, 40 and 60 minutes. Cortisol concentrations of blood (maximum at 30 minutes) and tears (maximum at 40 minutes) increased during the procedure and then decreased. There were significant correlations between cortisol concentrations of blood and tears (p = 0,04) during sham foot trimming (area under the curve, 0 to 60 minutes). Over the entire 6-day study period, significant correlations were seen between the cortisol concentrations of blood and tears (r = 0,55; p.
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Affiliation(s)
- R Wagner
- Klinik für Klauentiere, Veterinärmedizinische Fakultät, Universität Leipzig, Deutschland
| | - H Fieseler
- Klinik für Klauentiere, Veterinärmedizinische Fakultät, Universität Leipzig, Deutschland
| | - M Kaiser
- Klinik für Klauentiere, Veterinärmedizinische Fakultät, Universität Leipzig, Deutschland
| | - H Müller
- Klinik für Klauentiere, Veterinärmedizinische Fakultät, Universität Leipzig, Deutschland
| | - N Mielenz
- Institut für -Agrar- und Ernährungswissenschaften, Arbeitsgruppe Biometrie und Agrarinformatik, Martin-Luther-Universität, Halle-Wittenberg, 06120 Halle (Saale), Deutschland
| | - J Spilke
- Institut für -Agrar- und Ernährungswissenschaften, Arbeitsgruppe Biometrie und Agrarinformatik, Martin-Luther-Universität, Halle-Wittenberg, 06120 Halle (Saale), Deutschland
| | - J Gottschalk
- Veterinär-Physiologisch-Chemisches Institut, Biochemie der Veterinär-medizinischen Fakultät, Universität Leipzig, Deutschland
| | - A Einspanier
- Veterinär-Physiologisch-Chemisches Institut, Biochemie der Veterinär-medizinischen Fakultät, Universität Leipzig, Deutschland
| | - R Palme
- Abteilung für Physiologie, Pathophysiologie und -experimentelle Endokrinologie, Veterinärmedizinische Universität Wien, Österreich
| | - A Rizk
- Abteilung Chirurgie, -Anästhesiologie und Radiologie, Veterinärmedizinische Fakultät, Universität Mansoura, Ägypten
| | - G Möbius
- Institut für Tierhygiene und Öffentliches Veterinärwesen der Veterinärmedizinischen Fakultät der Universität Leipzig, Deutschland
| | - W Baumgartner
- Universitätsklinik für Wiederkäuer, Veterinärmedizinische Universität Wien, Wien, Österreich
| | - F Rachidi
- Klinik für Klauentiere, Veterinärmedizinische Fakultät, Universität Leipzig, Deutschland
| | - A Starke
- Klinik für Klauentiere, Veterinärmedizinische Fakultät, Universität Leipzig, Deutschland
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Selva KJ, Davis SK, Haycroft ER, Lee WS, Lopez E, Reynaldi A, Davenport MP, Kent HE, Juno JA, Chung AW, Kent SJ. Tear antibodies to SARS-CoV-2: implications for transmission. Clin Transl Immunology 2021; 10:e1354. [PMID: 34754451 PMCID: PMC8559894 DOI: 10.1002/cti2.1354] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 12/20/2022] Open
Abstract
Objectives SARS‐CoV‐2 can be transmitted by aerosols, and the ocular surface may be an important route of transmission. Little is known about protective antibody responses to SARS‐CoV‐2 in tears after infection or vaccination. We analysed the SARS‐CoV‐2‐specific IgG and IgA responses in human tears after either COVID‐19 infection or vaccination. Methods We measured the antibody responses in 16 subjects with COVID‐19 infection for an average of 7 months before, and 15 subjects before and 2 weeks post‐Comirnaty (Pfizer‐BioNtech) vaccination. Plasma, saliva and basal tears were collected. Eleven pre‐pandemic individuals were included as healthy controls. Results IgG antibodies to spike and nucleoprotein were detected in tears, saliva and plasma from subjects with prior SARS‐CoV‐2 infection in comparison with uninfected controls. While receptor‐binding domain (RBD)‐specific antibodies were detected in plasma, minimal RBD‐specific antibodies were detected in tears and saliva. By contrast, high levels of IgG antibodies to spike and RBD, but not nucleoprotein, were induced in tears, saliva and plasma of subjects receiving 2 doses of the Comirnaty vaccine. Increased levels of IgA1 and IgA2 antibodies to SARS‐CoV‐2 antigens were detected in plasma following infection or vaccination but were unchanged in tears and saliva. Comirnaty vaccination induced high neutralising Abs in the plasma, but limited neutralising antibodies were detected in saliva or tears. Conclusion Both infection and vaccination induce SARS‐CoV‐2‐specific IgG antibodies in tears. RBD‐specific IgG antibodies in tears were induced by vaccination but were not present 7 months post‐infection. This suggests the neutralising antibodies may be low in the tears late following infection.
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Affiliation(s)
- Kevin J Selva
- Department of Microbiology and Immunology Peter Doherty Institute for Infection and Immunity The University of Melbourne Melbourne VIC Australia
| | - Samantha K Davis
- Department of Microbiology and Immunology Peter Doherty Institute for Infection and Immunity The University of Melbourne Melbourne VIC Australia
| | - Ebene R Haycroft
- Department of Microbiology and Immunology Peter Doherty Institute for Infection and Immunity The University of Melbourne Melbourne VIC Australia
| | - Wen Shi Lee
- Department of Microbiology and Immunology Peter Doherty Institute for Infection and Immunity The University of Melbourne Melbourne VIC Australia.,The Walter and Eliza Hall Institute of Medical Research Melbourne VIC Australia
| | - Ester Lopez
- Department of Microbiology and Immunology Peter Doherty Institute for Infection and Immunity The University of Melbourne Melbourne VIC Australia
| | - Arnold Reynaldi
- Kirby Institute University of New South Wales Kensington NSW Australia
| | - Miles P Davenport
- Kirby Institute University of New South Wales Kensington NSW Australia
| | - Helen E Kent
- Department of Microbiology and Immunology Peter Doherty Institute for Infection and Immunity The University of Melbourne Melbourne VIC Australia
| | - Jennifer A Juno
- Department of Microbiology and Immunology Peter Doherty Institute for Infection and Immunity The University of Melbourne Melbourne VIC Australia
| | - Amy W Chung
- Department of Microbiology and Immunology Peter Doherty Institute for Infection and Immunity The University of Melbourne Melbourne VIC Australia
| | - Stephen J Kent
- Department of Microbiology and Immunology Peter Doherty Institute for Infection and Immunity The University of Melbourne Melbourne VIC Australia.,Sexual Health Centre Department of Infectious Diseases Alfred Hospital and Central Clinical School Monash University Melbourne VIC Australia
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Abstract
Dry eye disease (DED) affects up to one-third of the global population. Traditional therapies, including topical lubricants, have been employed with variable success in the treatment of DED. Recently, neurostimulation of the lacrimal functional unit (LFU) has emerged as a promising alternative therapy for DED. In this review, we describe the neuroanatomical and pathophysiological considerations of DED and the LFU that make neurostimulation a viable therapeutic alternative. We further detail the various neurostimulatory approaches taken thus far—from implanted stimulators to external devices to chemical neurostimulation. Existing studies reveal the strengths of the neurostimulatory approach in increasing tear volume and improving dry eye symptoms, but further studies are needed to elucidate its true potential in treatment of DED.
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Affiliation(s)
- Michael D Yu
- Oculoplastic Surgery and Orbital Oncology Service, Byers Eye Institute, Stanford University, Palo Alto, CA, USA
| | - Ji Kwan Park
- Oculofacial Plastic and Orbital Surgery, Indianapolis, IN, USA
| | - Andrea L Kossler
- Oculoplastic Surgery and Orbital Oncology Service, Byers Eye Institute, Stanford University, Palo Alto, CA, USA
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Wechsler ME, Jocelyn Dang HKH, Simmonds SP, Bahrami K, Wyse JM, Dahlhauser SD, Reuther JF, VandeWalle AN, Anslyn EV, Peppas NA. Electrostatic and Covalent Assemblies of Anionic Hydrogel-Coated Gold Nanoshells for Detection of Dry Eye Biomarkers in Human Tears. Nano Lett 2021; 21:8734-8740. [PMID: 34623161 PMCID: PMC8588787 DOI: 10.1021/acs.nanolett.1c02941] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Although dry eye is highly prevalent, many challenges exist in diagnosing the symptom and related diseases. For this reason, anionic hydrogel-coated gold nanoshells (AuNSs) were used in the development of a label-free biosensor for detection of high isoelectric point tear biomarkers associated with dry eye. A custom, aldehyde-functionalized oligo(ethylene glycol)acrylate (Al-OEGA) was included in the hydrogel coating to enhance protein recognition through the formation of dynamic covalent (DC) imine bonds with solvent-accessible lysine residues present on the surface of select tear proteins. Our results demonstrated that hydrogel-coated AuNSs, composed of monomers that form ionic and DC bonds with select tear proteins, greatly enhance protein recognition due to changes in the maximum localized surface plasmon resonance wavelength exhibited by AuNSs in noncompetitive and competitive environments. Validation of the developed biosensor in commercially available pooled human tears revealed the potential for clinical translation to establish a method for dry eye diagnosis.
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Affiliation(s)
- Marissa E Wechsler
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, Texas 78712, United States
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - H K H Jocelyn Dang
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Susana P Simmonds
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Kiana Bahrami
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jordyn M Wyse
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Samuel D Dahlhauser
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - James F Reuther
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
- Department of Chemistry, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Abigail N VandeWalle
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Eric V Anslyn
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Nicholas A Peppas
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, Texas 78712, United States
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
- Department of Surgery and Perioperative Care, Dell Medical School, The University of Texas at Austin, Austin, Texas 78712, United States
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Rodríguez-Ares T, Lamas-Francis D, Treviño M, Navarro D, Cea M, López-Valladares MJ, Martínez L, Gude F, Touriño R. SARS-CoV-2 in Conjunctiva and Tears and Ocular Symptoms of Patients with COVID-19. Vision (Basel) 2021; 5:vision5040051. [PMID: 34698308 PMCID: PMC8544743 DOI: 10.3390/vision5040051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/18/2021] [Accepted: 10/19/2021] [Indexed: 12/23/2022] Open
Abstract
This study investigates the presence of SARS-CoV-2 in conjunctival secretions and tears and evaluates ocular symptoms in a group of patients with COVID-19. We included 56 hospitalized patients with COVID-19 in this cross-sectional cohort study. Conjunctival secretions and tears were collected using flocked swabs and Schirmer strips for SARS-CoV-2 reverse-transcriptase polymerase chain reaction (RT-PCR). Assessment of ocular surface manifestations included an OSDI (Ocular Surface Disease Index) questionnaire. Patients had been admitted to hospital for an average of 2.4 days (range 0–7) and had shown general symptoms for an average of 7.1 days (range 1–20) prior to ocular testing. Four (7.1%) of 56 conjunctival swabs and four (4%) of 112 Schirmer strips were positive for SARS-CoV-2. The mean E-gene cycle threshold values (Ct values) were 31.2 (SD 5.0) in conjunctival swabs and 32.9 (SD 2.7) in left eye Schirmer strips. Overall, 17 (30%) patients presented ocular symptoms. No association was found between positive ocular samples and ocular symptoms. This study shows that SARS-CoV-2 can be detected on the conjunctiva and tears of patients with COVID-19. Contact with the ocular surface may transmit the virus and preventive measures should be taken in this direction.
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Affiliation(s)
- Teresa Rodríguez-Ares
- Department of Ophthalmology, University Hospital of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (T.R.-A.); (M.J.L.-V.); (L.M.); (R.T.)
- Faculty of Medicine, University of Santiago de Compostela, 15705 Santiago de Compostela, Spain;
| | - David Lamas-Francis
- Department of Ophthalmology, University Hospital of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (T.R.-A.); (M.J.L.-V.); (L.M.); (R.T.)
- Correspondence:
| | - Mercedes Treviño
- Department of Microbiology, University Hospital of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (M.T.); (D.N.); (M.C.)
| | - Daniel Navarro
- Department of Microbiology, University Hospital of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (M.T.); (D.N.); (M.C.)
| | - María Cea
- Department of Microbiology, University Hospital of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (M.T.); (D.N.); (M.C.)
| | - María Jesús López-Valladares
- Department of Ophthalmology, University Hospital of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (T.R.-A.); (M.J.L.-V.); (L.M.); (R.T.)
| | - Laura Martínez
- Department of Ophthalmology, University Hospital of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (T.R.-A.); (M.J.L.-V.); (L.M.); (R.T.)
| | - Francisco Gude
- Faculty of Medicine, University of Santiago de Compostela, 15705 Santiago de Compostela, Spain;
- Clinical Epidemiology Service, University Hospital of Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - Rosario Touriño
- Department of Ophthalmology, University Hospital of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (T.R.-A.); (M.J.L.-V.); (L.M.); (R.T.)
- Faculty of Medicine, University of Santiago de Compostela, 15705 Santiago de Compostela, Spain;
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Ong CW, Ito K. Can't fight seeing sadness in tears: Measuring the implicit association between tears and sadness. Br J Soc Psychol 2021; 61:672-687. [PMID: 34569070 DOI: 10.1111/bjso.12503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 09/12/2021] [Indexed: 11/28/2022]
Abstract
Visible tears have been shown to enhance the perception of sadness. Whether the sadness perception from visible tears can occur automatically, which is essential for the rapid identification of emotional cues in real-life social interactions, is still unclear. We employed the reaction-time-based Implicit Association Test (IAT) to assess the implicit association of tears and sadness in two studies. Study 1 (N = 58) used sadness/non-sadness or negative/positive affect words as attribute pairs and images of tearless or tearful neutral expressions as targeted concepts. In Study 2 (N = 54), the neutral expressions were replaced with anger, disgust, fear, surprise, and happiness expressions with or without tears. Both studies revealed a strong tendency among participants to implicitly associate tears with sadness and negative affect. The results complemented findings from self-report measures by showing that the perception of sadness from visible tears can occur efficiently with little control.
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Affiliation(s)
- Chew Wei Ong
- School of Social Sciences, Nanyang Technological University, Singapore
| | - Kenichi Ito
- School of Social Sciences, Nanyang Technological University, Singapore
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Hawkins CB, Abromitis R, van Eck C. Differences in risk factors exist for the occurrence of bilateral versus unilateral distal biceps tendon ruptures: a systematic review. J ISAKOS 2021; 6:302-307. [PMID: 34535555 DOI: 10.1136/jisakos-2020-000570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 10/07/2020] [Indexed: 11/03/2022]
Abstract
IMPORTANCE Distal biceps rupture is a debilitating injury that is increasing in incidence. A subset of patient experiences this injury on both sides, simultaneously or at separated times. Previous studies have evaluated the incidence and risk factors of unilateral distal biceps rupture. However, little is known about the risk factors for bilateral distal biceps rupture. AIMS This aims of this study were to determine risk factors for bilateral distal biceps rupture and to compare these to the known risk factors for unilateral rupture. EVIDENCE REVIEW A systematic review of literature was conducted using five databases, producing a total of 1183 papers. After the review process, 31 papers with data bilateral distal biceps tendon ruptures were included. FINDINGS The 31 papers included a total of 2234 patients with 2366 ruptures. Patients with a bilateral rupture were younger than patients with unilateral ruptures (45.8 vs 48.8 years old). Women made up a larger percentage of patients with bilateral ruptures (6.8% vs 4.0%). Bilateral injuries occurred most commonly during heavy lifting or falls, whereas forced extension of the arm was the most frequently reported injury mechanism reported with unilateral ruptures. Tobacco used was more common in patients with bilateral ruptures (24.4% vs 6.8%). Labour-intensive occupations and anabolic steroid use did not appear to increase the risk of a bilateral rupture. Pooling of the data was not possible due to heterogeneity of the included studies. CONCLUSIONS While differences in risk factors between patients with unilateral and bilateral ruptures were observed, there was too great of a degree of heterogeneity among the studies to perform a meta-analysis of the data. LEVEL OF EVIDENCE Systematic review; level III evidence.
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Affiliation(s)
| | - Rebecca Abromitis
- Health Sciences Library System, University of Pittsburgh Schools, Pittsburgh, Pennsylvania, USA
| | - Carola van Eck
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
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Navel V, Malecaze J, Pereira B, Baker JS, Malecaze F, Sapin V, Chiambaretta F, Dutheil F. Oxidative and antioxidative stress markers in keratoconus: a systematic review and meta-analysis. Acta Ophthalmol 2021; 99:e777-e794. [PMID: 33354927 DOI: 10.1111/aos.14714] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/20/2020] [Indexed: 12/13/2022]
Abstract
PURPOSE To conduct a systematic review and meta-analysis on the levels of oxidative stress markers and antioxidants in keratoconus compared to healthy subject. METHOD The PubMed, Cochrane Library, Embase, Science Direct and Google Scholar databases were searched on 1st June 2020 for studies reporting oxidative and antioxidative stress markers in keratoconus and healthy controls. Main meta-analysis was stratified by type of biomarkers, type of samples (tears, cornea, aqueous humour and blood) and type of corneal samples (stromal cells, epithelium and endothelium). RESULTS We included 36 articles, for a total of 1328 keratoconus patients and 1208 healthy controls. There is an overall increase in oxidative stress markers in keratoconus compared with healthy controls (standard mean deviation (SMD) = 0.94, 95% confidence interval (95% CI) 0.55-1.33), with a significant increase in reactive oxygen and nitrogen species (1.09, 0.41-1.78) and malondialdehyde (1.78, 0.83-2.73). There is an overall decrease in antioxidants in keratoconus compared with healthy controls (-0.63, -0.89 to -0.36), with a significant decrease in total antioxidant capacity/status (-1.65, -2.88 to -0.43), aldehyde/NADPH dehydrogenase (-0.77, -1.38 to -0.17), lactoferrin/transferrin/albumin (-1.92, -2.96 to -0.89) and selenium/zinc (-1.42, -2.23 to -0.61). Oxidative stress markers were higher in tears and in cornea of keratoconus than in aqueous humour, and antioxidants were decreased in tears, aqueous humour and blood without difference between sample type. Oxidative stress markers increased in stromal cells and antioxidants decreased in endothelium. CONCLUSION Oxidative stress markers and antioxidants were dysregulated in keratoconus, involving an imbalance of redox homeostasis in tears, cornea, aqueous humour and blood.
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Affiliation(s)
- Valentin Navel
- Ophthalmology CHU Clermont‐Ferrand University Hospital of Clermont‐Ferrand Clermont‐Ferrand France
- Genetic Reproduction and Development Laboratory (GReD) Translational Approach to Epithelial Injury and Repair Team CNRS UMR 6293 INSERM U1103 Université Clermont Auvergne Clermont‐Ferrand France
| | - Jean Malecaze
- Ophthalmology CHU Clermont‐Ferrand University Hospital of Clermont‐Ferrand Clermont‐Ferrand France
- Genetic Reproduction and Development Laboratory (GReD) Translational Approach to Epithelial Injury and Repair Team CNRS UMR 6293 INSERM U1103 Université Clermont Auvergne Clermont‐Ferrand France
| | - Bruno Pereira
- Clinical Research and Innovation Direction CHU Clermont–Ferrand University Hospital of Clermont Ferrand Clermont‐Ferrand France
| | - Julien S. Baker
- Department of Sport, Physical Education and Health Centre for Health and Exercise Science Research Hong Kong Baptist University Kowloon Tong Hong Kong
| | - François Malecaze
- Ophthalmology Department Pierre‐Paul Riquet Hospital University Hospital of Toulouse Toulouse France
| | - Vincent Sapin
- Genetic Reproduction and Development Laboratory (GReD) Translational Approach to Epithelial Injury and Repair Team CNRS UMR 6293 INSERM U1103 Université Clermont Auvergne Clermont‐Ferrand France
- Medical Biochemistry and Molecular Biology CHU Clermont‐Ferrand University Hospital of Clermont‐Ferrand Clermont‐Ferrand France
| | - Frédéric Chiambaretta
- Ophthalmology CHU Clermont‐Ferrand University Hospital of Clermont‐Ferrand Clermont‐Ferrand France
- Genetic Reproduction and Development Laboratory (GReD) Translational Approach to Epithelial Injury and Repair Team CNRS UMR 6293 INSERM U1103 Université Clermont Auvergne Clermont‐Ferrand France
| | - Frédéric Dutheil
- Preventive and Occupational Medicine CNRS, LaPSCo Physiological and Psychosocial Stress CHU Clermont‐Ferrand Université Clermont Auvergne University Hospital of Clermont‐Ferrand Clermont‐Ferrand France
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Messina A, Palmigiano A, Tosto C, Romeo DA, Sturiale L, Garozzo D, Leonardi A. Tear N-glycomics in vernal and atopic keratoconjunctivitis. Allergy 2021; 76:2500-2509. [PMID: 33583051 DOI: 10.1111/all.14775] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/08/2020] [Accepted: 12/23/2020] [Indexed: 12/12/2022]
Abstract
PURPOSE Tear fluid N-Glycome from patients affected with vernal (VKC) and atopic keratoconjunctivitis (AKC) was investigated to identify specific changes in tears and to recognize possible glyco-biomarkers. METHODS The analysis of the N-glycans was performed using matrix-assisted laser desorption ionization mass spectrometry on single tear samples. Tears from control normal subjects (CTRL), VKC and AKC patients were processed and treated with peptide N-glycosidase F (PNGase F) to deglycosylate N-glycoproteins. Released N-glycans were purified, permethylated, and analyzed by matrix-assisted laser desorption/ionization-time of flight mass spectrometry and tandem mass spectrometry (MALDI-TOF MS and MALDI-TOF MS/MS). RESULTS More than 150 complex N-glycans, including highly fucosylated biantennary, triantennary, tetra-antennary, and bisecting species, were observed in our spectra. Three distinct patterns for CTRL, VKC, and AKC patients were identified in terms of relative intensities for some N-glycans structures. Major variations involved bisecting and hyperfucosylated glycoforms. The most intense ions were associated with species at m/z 1907.0 (asialo, agalacto, bisected, biantennary structure-NGA2B) in CTRL MS profiles, at m/z 2605.3 and 2966.5 in VKC, and at m/z 2792.4 in AKC corresponding to a well-known biantennary, disialylated N-glycan. Several peaks were associated with structures bearing one or two Lewis X epitopes. Structures were confirmed by MS/MS analysis. Quantitative differences among the three groups were statistically significant. CONCLUSIONS Tear MS profiles are rich in specific glycoforms, particularly those with a high fucosylation degree, indicating both core and peripheral decoration. Tear N-glycome analysis provided important information for a better comprehension of VKC and AKC alterations at the molecular level.
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Affiliation(s)
- Angela Messina
- Consiglio Nazionale delle Ricerche (CNR) Istituto per i Polimeri Compositi e Biomateriali (IPCB) Catania Catania Italy
| | - Angelo Palmigiano
- Consiglio Nazionale delle Ricerche (CNR) Istituto per i Polimeri Compositi e Biomateriali (IPCB) Catania Catania Italy
| | - Claudia Tosto
- Consiglio Nazionale delle Ricerche (CNR) Istituto per i Polimeri Compositi e Biomateriali (IPCB) Catania Catania Italy
| | - Donata Agata Romeo
- Consiglio Nazionale delle Ricerche (CNR) Istituto per i Polimeri Compositi e Biomateriali (IPCB) Catania Catania Italy
| | - Luisa Sturiale
- Consiglio Nazionale delle Ricerche (CNR) Istituto per i Polimeri Compositi e Biomateriali (IPCB) Catania Catania Italy
| | - Domenico Garozzo
- Consiglio Nazionale delle Ricerche (CNR) Istituto per i Polimeri Compositi e Biomateriali (IPCB) Catania Catania Italy
| | - Andrea Leonardi
- Department of Neuroscience, Ophthalmology Unit University of Padua Padua Italy
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Li H, Fang H. Effect of microincisional cataract surgery on inflammatory indicators in tears and corneal endothelial cells in cataract patients. Am J Transl Res 2021; 13:7705-7714. [PMID: 34377247 PMCID: PMC8340243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/03/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVE To analyze the effect of microincisional cataract surgery on inflammation in tears and corneal endothelial cells in cataract patients. METHODS A total of 103 patients with cataracts in our hospital were enrolled and randomly divided into group A (n=52) and group B (n=51) by a random double-blind lottery. Group A received 1.8 mm coaxial microincision cataract surgery (C-MICS) while group B received 3.0 mm C-MICS, and the efficacy was compared between the two groups. RESULTS Average ultrasound energy (AVG), accumulative phaco time (APT), and effective phaco time (EPT) did not differ between groups (P > 0.05). Group A exhibited higher interleukin-2 (IL-2) levels at 5 days postoperatively and lower interleukin-6 (IL-6), interleukin-8 (IL-8), tumor necrosis factor-α (TNF-α), and tumor necrosis factor-β1 (TNF-β1) levels than group B (P < 0.05). The density of corneal endothelial cells, coefficient of variation, and percentage of hexagonal cells showed no significant difference in both groups at 5 days postoperatively (P > 0.05). Group A had higher visual acuity and lower visual acuity loss, visual fatigue, foreign body sensation, tingling, and photophobia scores than group B at 7, 14, and 28 days postoperatively (P < 0.05). The tear film break-up time (TBUT) in group A was longer than that in group B at 7, 14, and 28 days postoperatively, and the tear secretion length (in mm) on the strip in group A was longer than that in group B at 14 and 28 days postoperatively (P < 0.05). CONCLUSION Compared with other types of similar surgery, C-MICS can significantly control inflammation levels, with less effect on corneal endothelial cells, improve postoperative visual acuity, delay tear film break-up, increase tear secretion, and improve dry eye syndrome.
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Affiliation(s)
- Hangzhu Li
- Department of Ophthalmology, The First People's Hospital of Fuyang Hangzhou Hangzhou 311400, Zhejiang, China
| | - Hua Fang
- Department of Ophthalmology, The First People's Hospital of Fuyang Hangzhou Hangzhou 311400, Zhejiang, China
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Shashidhar D, Thangarajan R, Theruveethi N, Bonkuri S. Morphological Changes in the Lacrimal Gland of Anophthalmic Socket in Relation to the Contralateral Normal Eye in Male Wistar Albino Rats: A Histopathology Study. Curr Eye Res 2021; 46:1816-1821. [PMID: 34138668 DOI: 10.1080/02713683.2021.1945107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Purpose: The purpose of the study is to analyze the structural and functional alterations of the lacrimal gland and its tear secretion post-enucleation in Wistar rats.Method: Adult male Wistar rats (n = 15) of 8-week-old were randomly assigned into three groups viz. control, sham, and experimental group (n = 5). Rats of the experimental group were subjected to enucleation of the right eye. Under aseptic surgical conditions, with sterilized forceps, right eyeball of the rats of experimental group was exposed completely out of the socket by applying pressure on the lateral canthus of the eye. Enucleation was then achieved after holding the optic nerve tightly. The surgical procedure was similar in sham group without enucleation. Quantity of tears (Basal and reflex) secreted in both eyes in rats of all groups were measured by using Schirmer's strip, pre- and post-three weeks of enucleation. The lacrimal gland was harvested to analyze histopathological (structural) alterations.Results: Pr- and post-enucleation there was no significant difference observed in the tear volume across the groups. Histopathology of the lacrimal glands from all groups showed preserved lobular architecture with serous acini arranged in lobules, intralobular and interlobular ducts, interstitial fibro collagenous tissue. There was no glandular distortion and atrophy in experimental group.Conclusion: Enucleation do not co-relate or affect the tear volume and lacrimal gland acinar microstructural changes in an anophthalmic socket co-relating to the contralateral normal functional eye.
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Affiliation(s)
- Dantapuram Shashidhar
- Department of Optometry, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Rajesh Thangarajan
- Department of Anatomical Sciences, School of Medicine, St. Matthew's University, Grand Cayman, Cayman Islands, B.W.I
| | - Nagarajan Theruveethi
- Department of Optometry, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Subhashini Bonkuri
- Department of Optometry, Sushant School of Optometry, Ansal University, Gurgaon, India
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Adigal SS, Rizvi A, Rayaroth NV, John RV, Barik A, Bhandari S, George SD, Lukose J, Kartha VB, Chidangil S. Human tear fluid analysis for clinical applications: progress and prospects. Expert Rev Mol Diagn 2021; 21:767-787. [PMID: 34115952 DOI: 10.1080/14737159.2021.1941879] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Introduction: Human blood and saliva are increasingly under investigation for the detection of biomarkers for early diagnosis of non-communicable (e.g.cancers) and communicable diseases like COVID-19. Exploring the potential application of human tears, an easily accessible body fluid, for the diagnosis of various diseases is the need of the hour.Areas covered: This review deals with a comprehensive account of applications of tear analysis using different techniques, their comparison and overall progress achieved till now. The techniques used for tear fluid analysis are HPLC/UPLC/SDS-PAGE, CE, etc., together with ELISA, Mass Spectrometry, etc. But, with advances in instrumentation and data processing methods, it has become easy to couple the various separation methods with highly sensitive optical techniques for the analysis of body fluids.Expert opinion: Tear analysis can provide valuable information about the health condition of the eyes since it contains several molecular constituents, and their relative concentrations may alter under abnormal conditions. Tear analysis has the advantage that it is totally non-invasive. This study recommends tear fluid as a reliable clinical sample to be probed by highly sensitive optical techniques to diagnose different health conditions, with special emphasis on eye diseases.
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Affiliation(s)
- Sphurti S Adigal
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Alisha Rizvi
- Department of Ophthalmology, Kasthurba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Nidheesh V Rayaroth
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Reena V John
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Ajayakumar Barik
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Sulatha Bhandari
- Department of Ophthalmology, Kasthurba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Sajan D George
- Centre for Applied Nanotechnology, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Jijo Lukose
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Vasudevan B Kartha
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Santhosh Chidangil
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka, India
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Ji YW, Seong H, Seo JG, Park SY, Alotaibi M, Choi M, Nam S, Kim TI, Lee HK, Seo KY. Evaluation of dry eye subtypes and characteristics using conventional assessments and dynamic tear interferometry. Br J Ophthalmol 2021; 106:1648-1654. [PMID: 34108224 DOI: 10.1136/bjophthalmol-2020-318624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 05/29/2021] [Indexed: 11/04/2022]
Abstract
BACKGROUND/AIMS To evaluate subtypes and characteristics of dry eye (DE) using conventional tests and dynamic tear interferometry, and to investigate determinants of disease severity in each DE subtype. METHODS 309 patients diagnosed with DE and 69 healthy controls were prospectively enrolled. All eyes were evaluated using Ocular Surface Disease Index (OSDI), Schirmer's test I (ST1) and Meibomian gland dysfunction (MGD) grade were analysed. The tear interferometric pattern and lipid layer thickness were determined using DR-1α and LipiView II, respectively. RESULTS Dynamic interferometric analysis revealed 56.6% of patients with DE exhibited Jupiter patterns, indicative of aqueous-deficiency, while 43.4% exhibited crystal patterns, indicative of lipid deficiency. These findings were in accordance with classification based on ST1 scores and MGD grade. Conventional assessment indicated 286 patients exhibited evidence of evaporative DE (EDE) due to MGD, while only 11 exhibited signs of pure aqueous-deficient DE (pure ADDE, only ST1 ≤5 mm). Interestingly, of 286 patients with EDE, 144 were categorised into the mixed-ADDE/EDE group, in which ST1 was identified as a strong negative determinant of OSDI. In contrast, 72.2% of patients with mixed-ADDE/EDE exhibited Jupiter patterns (Jupiter mixed), while 27.8% exhibited crystal patterns (crystal mixed). OSDI values were significantly higher in the crystal-mixed group than in the Jupiter mixed, in which OSDI scores were independently associated with ST1 values only. CONCLUSIONS Our findings indicate that majority of EDE patients also exhibit aqueous deficiency, which can aggravate symptoms even in patients with lipid-deficient mixed-ADDE/EDE. Conventional assessments should be combined with interferometric tear analysis to determine the most appropriate treatment for each DE patient.
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Affiliation(s)
- Yong Woo Ji
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyojin Seong
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, South Korea.,Department of Ophthalmology, National Health Insurance Service Ilsan Hospital, Goyang, South Korea
| | - Jeong Gi Seo
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, South Korea
| | - Si Yoon Park
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, South Korea
| | - Mutlaq Alotaibi
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, South Korea.,Department of Ophthalmology, Prince Mohammad Bin Abdulaziz Hospital, Riyadh, Saudi Arabia
| | - Moonjung Choi
- Department of Ophthalmology, National Health Insurance Service Ilsan Hospital, Goyang, South Korea
| | - Sangmin Nam
- Department of Ophthalmology, CHA Bundang Medical Center, CHA University, Seongnam, South Korea
| | - Tae-Im Kim
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyung Keun Lee
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, South Korea
| | - Kyoung Yul Seo
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, South Korea
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Affiliation(s)
- Tina Felfeli
- Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ontario, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.,Kensington Vision and Research Centre, Kensington Eye Institute, University of Toronto, Toronto, Ontario, Canada
| | - Samantha B Kasloff
- J.C. Wilt Infectious Diseases Research Centre, Public Health Agency of Canada Ontario Manitoba Saskatchewan Regional Office, Winnipeg, Manitoba, Canada.,Canadian Science Centre for Human and Animal Health, Winnipeg, Manitoba, Canada
| | - Jay Krishnan
- J.C. Wilt Infectious Diseases Research Centre, Public Health Agency of Canada Ontario Manitoba Saskatchewan Regional Office, Winnipeg, Manitoba, Canada.,Canadian Science Centre for Human and Animal Health, Winnipeg, Manitoba, Canada
| | - Sherif R El-Defrawy
- Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ontario, Canada.,Kensington Vision and Research Centre, Kensington Eye Institute, University of Toronto, Toronto, Ontario, Canada
| | - Tony Mazzulli
- Department of Microbiology, Mount Sinai Hospital, University Health Network, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.,Public Health Ontario Laboratory, Toronto, Ontario, Canada
| | - Todd A Cutts
- J.C. Wilt Infectious Diseases Research Centre, Public Health Agency of Canada Ontario Manitoba Saskatchewan Regional Office, Winnipeg, Manitoba, Canada.,Canadian Science Centre for Human and Animal Health, Winnipeg, Manitoba, Canada
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Almazroa A, Alamri S, Alabdulkader B, Alkozi H, Khan A, Alghamdi W. Ocular transmission and manifestation for coronavirus disease: a systematic review. Int Health 2021; 14:113-121. [PMID: 34043796 PMCID: PMC8195065 DOI: 10.1093/inthealth/ihab028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/30/2021] [Accepted: 05/07/2021] [Indexed: 01/13/2023] Open
Abstract
Background There is currently a lack of information regarding ocular tropism and the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Globally, the cumulative number of coronavirus disease 2019 (COVID-19) cases is increasing daily. Thus the potential for ocular transmission and manifestations of SARS-CoV-2 requires more investigation. Methods A systematic search of electronic databases for ocular transmission and manifestations of SARS-CoV-2 was performed. Pooled cross-sectional studies were used for conducting a meta-analysis to estimate the prevalence of ocular transmission of SARS-CoV-2 to the respiratory system and ocular manifestations (associated symptoms) of SARS-CoV-2. Results The highest prevalence of SARS-CoV-2-positive tears using reverse transcription polymerase chain reaction was found to be 7.5%. However, the highest prevalence of ocular conjunctivitis associated with SARS-CoV-2 was 32%. Thus, SARS-CoV-2 can evidently infect the eye, as revealed in the conjunctival secretions of COVID-19 patients. Conclusion The available data reflect the influence of the ocular structure on SARS-CoV-2. The analysis showed that ocular manifestation is an indication for SARS-CoV-2, particularly conjunctivitis. Moreover, there is no evidence that the ocular structure can be an additional path of transmission for SARS-CoV-2, however, it warrants further investigation.
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Affiliation(s)
- Ahmed Almazroa
- Department of Imaging Research, King Abdullah International Medical Research Center, Riyadh, 11481, Saudi Arabia.,King Saud bin Abdulaziz University for Health Sciences, 14611, Riyadh, Saudi Arabia
| | - Suhailah Alamri
- Department of Imaging Research, King Abdullah International Medical Research Center, Riyadh, 11481, Saudi Arabia.,King Saud bin Abdulaziz University for Health Sciences, 14611, Riyadh, Saudi Arabia
| | - Balsam Alabdulkader
- Department of Optometry and Vision Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, 12372, Saudi Arabia
| | - Hanan Alkozi
- Department of Imaging Research, King Abdullah International Medical Research Center, Riyadh, 11481, Saudi Arabia.,King Saud bin Abdulaziz University for Health Sciences, 14611, Riyadh, Saudi Arabia
| | - Altaf Khan
- Department of Biostatistics and Bioinformatics, King Abdullah International Medical Research center, Riyadh, 11481, Saudi Arabia.,King Saud bin Abdulaziz University for Health Sciences, 14611, Riyadh, Saudi Arabia
| | - Walead Alghamdi
- Optometry Department, College of Applied Medical Sciences, Qassim University, Qassim, 51452, Saudi Arabia.,School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2033, Australia
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Edorh NA, El Maftouhi A, Djerada Z, Arndt C, Denoyer A. New model to better diagnose dry eye disease integrating OCT corneal epithelial mapping. Br J Ophthalmol 2021; 106:1488-1495. [PMID: 34031042 DOI: 10.1136/bjophthalmol-2021-318826] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/29/2021] [Accepted: 05/03/2021] [Indexed: 11/04/2022]
Abstract
PURPOSE To optimise the objective diagnosis of dry eye disease (DED), the capabilities of wide corneal epithelial mapping using optical coherence tomography (OCT) were studied and subsequently integrated into a new scoring method. METHODS Fifty-nine patients (118 eyes) with DED and 55 control subjects (110 eyes) were included. All patients underwent a complete ocular surface evaluation. Corneal epithelial thickness was collected using OCT for seven zones. DED and the control group were compared using a t-test, and univariate receiver operating characteristic (ROC) curves were calculated to define the diagnostic ability of OCT epithelial mapping. Multivariate analyses were performed using artificial intelligence (random forest) and logistic regression approaches to define the best way to integrate OCT mapping in the diagnosis of DED. Then, a final multivariable model for diagnosing DED was validated through a bootstrapping method. RESULTS The DED group had significant epithelial thinning compared with the controls, regardless of location. Superior intermediate epithelial thickness was the best marker for diagnosing DED using OCT (binormal estimated area under ROC: 0.87; best cut-off value: 50 µm thickness). The difference between the inferior and superior peripheral zones was the best marker for grading the severity of DED (analysis of variance, p=0.009). A multivariate approach identified other significant covariables which were integrated into a multivariate model to improve the sensitivity (86.4%) and specificity (91.7%) of this innovative diagnostic method. CONCLUSION Including OCT corneal epithelial mapping in a new diagnostic tool for DED could allow optimisation of the screening and staging of the disease in current practice as well as for clinical research purposes.
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Affiliation(s)
- Norah A Edorh
- Department of Ophthalmology, CHU Reims, Reims, France
| | - Adil El Maftouhi
- Department 3, National Hospital Centre for Ophthalmology Quinze-Vingts, Paris, France
| | | | - Carl Arndt
- Department of Ophthalmology, CHU Reims, Reims, France.,Reims Champagne-Ardenne University, Reims, France
| | - Alexandre Denoyer
- Department of Ophthalmology, CHU Reims, Reims, France .,Reims Champagne-Ardenne University, Reims, France
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Raga-Cervera J, Bolarin JM, Millan JM, Garcia-Medina JJ, Pedrola L, Abellán-Abenza J, Valero-Vello M, Sanz-González SM, O’Connor JE, Galarreta-Mira D, Bendala-Tufanisco E, Mayordomo-Febrer A, Pinazo-Durán MD, Zanón-Moreno V. miRNAs and Genes Involved in the Interplay between Ocular Hypertension and Primary Open-Angle Glaucoma. Oxidative Stress, Inflammation, and Apoptosis Networks. J Clin Med 2021; 10:jcm10112227. [PMID: 34063878 PMCID: PMC8196557 DOI: 10.3390/jcm10112227] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/10/2021] [Accepted: 05/17/2021] [Indexed: 02/06/2023] Open
Abstract
Glaucoma has no cure and is a sight-threatening neurodegenerative disease affecting more than 100 million people worldwide, with primary open angle glaucoma (POAG) being the most globally prevalent glaucoma clinical type. Regulation of gene expression and gene networks, and its multifactorial pathways involved in glaucoma disease are landmarks for ophthalmic research. MicroRNAs (miRNAs/miRs) are small endogenous non-coding, single-stranded RNA molecules (18–22 nucleotides) that regulate gene expression. An analytical, observational, case-control study was performed in 42 patients of both sexes, aged 50 to 80 years, which were classified according to: (1) suffering from ocular hypertension (OHT) but no glaucomatous neurodegeneration (ND) such as the OHT group, or (2) have been diagnosed of POAG such as the POAG group. Participants were interviewed for obtaining sociodemographic and personal/familial records, clinically examined, and their tear samples were collected and frozen at 80 °C until processing for molecular-genetic assays. Tear RNA extraction, libraries construction, and next generation sequencing were performed. Here, we demonstrated, for the first time, the differential expression profiling of eight miRNAs when comparing tears from the OHT versus the POAG groups: the miR-26b-5p, miR-152-3p, miR-30e-5p, miR-125b-2-5p, miR-224-5p, miR-151a-3p, miR-1307-3p, and the miR-27a-3p. Gene information was set up from the DIANA-TarBase v7, DIANA-microT-CDS, and TargetScan v7.1 databases. To build a network of metabolic pathways, only genes appearing in at least four of the following databases: DisGeNet, GeneDistiller, MalaCards, OMIM PCAN, UniProt, and GO were considered. We propose miRNAs and their target genes/signaling pathways as candidates for a better understanding of the molecular-genetic bases of glaucoma and, in this way, to gain knowledge to achieve optimal diagnosis strategies for properly identifying HTO at higher risk of glaucoma ND. Further research is needed to validate these miRNAs to discern the potential role as biomarkers involved in oxidative stress, immune response, and apoptosis for the diagnosis and/or prognosis of OHT and the prevention of glaucoma ND.
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Affiliation(s)
| | - Jose M. Bolarin
- Technological Centre of Information and Communication Technologies (CENTIC), 30100 Murcia, Spain; (J.M.B.); (J.A.-A.)
| | - Jose M. Millan
- Sequencing Service at the University and Polytechnic Hospital La Fe, 46026 Valencia, Spain; (J.M.M.); (L.P.)
| | - Jose J. Garcia-Medina
- Ophthalmic Research Unit “Santiago Grisolía”/FISABIO, 46017 Valencia, Spain; (J.J.G.-M.); (M.V.-V.); (M.D.P.-D.); (V.Z.-M.)
- Department of Ophthalmology, General University Hospital “Morales Meseguer”, 30007 Murcia, Spain
- Department of Ophthalmology and Optometry, University of Murcia, 30120 Murcia, Spain
- Spanish Net of Ophthalmic Research OFTARED RD16/0008/0022, Institute of Health Carlos III, 28029 Madrid, Spain; (E.B.-T.); (A.M.-F.)
| | - Laia Pedrola
- Sequencing Service at the University and Polytechnic Hospital La Fe, 46026 Valencia, Spain; (J.M.M.); (L.P.)
| | - Javier Abellán-Abenza
- Technological Centre of Information and Communication Technologies (CENTIC), 30100 Murcia, Spain; (J.M.B.); (J.A.-A.)
| | - Mar Valero-Vello
- Ophthalmic Research Unit “Santiago Grisolía”/FISABIO, 46017 Valencia, Spain; (J.J.G.-M.); (M.V.-V.); (M.D.P.-D.); (V.Z.-M.)
| | - Silvia M. Sanz-González
- Ophthalmic Research Unit “Santiago Grisolía”/FISABIO, 46017 Valencia, Spain; (J.J.G.-M.); (M.V.-V.); (M.D.P.-D.); (V.Z.-M.)
- Spanish Net of Ophthalmic Research OFTARED RD16/0008/0022, Institute of Health Carlos III, 28029 Madrid, Spain; (E.B.-T.); (A.M.-F.)
- Cellular and Molecular Ophthalmobiology Group, Department of Surgery, Faculty of Medicine and Odontology, University of Valencia, 46010 Valencia, Spain
- Correspondence:
| | - José E. O’Connor
- Laboratory of Cytomics, Joint Research Unit Principe Felipe Research Center and University of Valencia, 46010 Valencia, Spain;
| | | | - Elena Bendala-Tufanisco
- Spanish Net of Ophthalmic Research OFTARED RD16/0008/0022, Institute of Health Carlos III, 28029 Madrid, Spain; (E.B.-T.); (A.M.-F.)
- Mixed Research Unit for Visual Health and Veterinary Ophthalmology CEU/FISABIO, 46020 Valencia, Spain
- Physiology Department, Faculty of Health Sciences, CEU University, Alfara del Patriarca, 46115 Valencia, Spain
| | - Aloma Mayordomo-Febrer
- Spanish Net of Ophthalmic Research OFTARED RD16/0008/0022, Institute of Health Carlos III, 28029 Madrid, Spain; (E.B.-T.); (A.M.-F.)
- Mixed Research Unit for Visual Health and Veterinary Ophthalmology CEU/FISABIO, 46020 Valencia, Spain
- Animal Medicine and Surgery Department, Veterinary Medicine Faculty, CEU University, Alfara del Patriarca, 46115 Valencia, Spain
| | - Maria D. Pinazo-Durán
- Ophthalmic Research Unit “Santiago Grisolía”/FISABIO, 46017 Valencia, Spain; (J.J.G.-M.); (M.V.-V.); (M.D.P.-D.); (V.Z.-M.)
- Spanish Net of Ophthalmic Research OFTARED RD16/0008/0022, Institute of Health Carlos III, 28029 Madrid, Spain; (E.B.-T.); (A.M.-F.)
- Cellular and Molecular Ophthalmobiology Group, Department of Surgery, Faculty of Medicine and Odontology, University of Valencia, 46010 Valencia, Spain
| | - Vicente Zanón-Moreno
- Ophthalmic Research Unit “Santiago Grisolía”/FISABIO, 46017 Valencia, Spain; (J.J.G.-M.); (M.V.-V.); (M.D.P.-D.); (V.Z.-M.)
- Spanish Net of Ophthalmic Research OFTARED RD16/0008/0022, Institute of Health Carlos III, 28029 Madrid, Spain; (E.B.-T.); (A.M.-F.)
- Faculty of Health Sciences, Valencian International University, 46002 Valencia, Spain
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Gunduz A, Firat M, Turkoglu G. Comparison of the simultaneous conjunctiva and oropharynx-nasopharynx swab results in patients applying to the SARS-CoV-2 outpatient clinic for the first time. J Med Virol 2021; 93:4516-4522. [PMID: 33783859 PMCID: PMC8250913 DOI: 10.1002/jmv.26981] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 03/02/2021] [Accepted: 03/23/2021] [Indexed: 12/26/2022]
Abstract
The aim is to comparatively evaluate the results of simultaneous conjunctiva and oropharynx–nasopharynx (ONP) swabs in patients who had presented to the outpatient department with a suspicion of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2). An ONP sample was obtained following bilateral conjunctiva swabs in 85 subjects with a contact history or symptoms but unknown SARS‐CoV‐2 status and with no ocular symptoms or findings. The results were evaluated according to the patient's symptoms and how the swab was taken. The conjunctiva swab was positive in 29 (34.1%) cases and the ONP swab in 20 (23.5%) cases. Both methods produced positive results in 11 (14.1%) cases. The mean cycle threshold (Ct) value was 30.15 ± 3.41 in symptomatic cases and 33.62 ± 1.76 in asymptomatic cases (p = .008). The mean Ct value was 24.37 ± 3.48 when only the ONP swab was positive and 31.22 ± 1.99 when only the conjunctiva swab was positive. In cases that were positive by both methods, the mean Ct value was 25.21 ± 4.94 for the ONP swab and 30.29 ± 5.05 for the conjunctiva swab. We found higher SARS‐CoV‐2 detection rates with the conjunctiva swab than the ONP swab in cases with unknown SARS‐CoV‐2 status in the early period. In addition, the conjunctival viral load seemed to be higher in symptomatic cases than in asymptomatic cases. We, therefore, believe a conjunctiva swab could be an alternative method to detect SARS‐CoV‐2 at the time of the first presentation to the outpatient department.
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Affiliation(s)
- Ayten Gunduz
- Department of Medical Microbology, Faculty of Medicine, Malatya Turgut Ozal University, Malatya, Turkey
| | - Murat Firat
- Department of Ophthalmology, Elbistan State Hospital, Elbistan, Turkey
| | - Gamze Turkoglu
- Department of Medical Microbology, Faculty of Medicine, Malatya Turgut Ozal University, Malatya, Turkey.,Department of Medical Microbology, Malatya Training and Research Hospital, Malatya, Turkey
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Muyldermans A, Bjerke M, Demuyser T, De Geyter D, Wybo I, Soetens O, Weets I, Kuijpers R, Allard SD, Piérard D, Raus PPM. SARS-CoV-2 RNA and antibodies in tear fluid. BMJ Open Ophthalmol 2021; 6:e000733. [PMID: 34192156 PMCID: PMC8098291 DOI: 10.1136/bmjophth-2021-000733] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/15/2021] [Accepted: 04/21/2021] [Indexed: 12/18/2022] Open
Abstract
Background/aims SARS-CoV-2 is highly contagious. More evidence concerning extrapulmonary transmission routes such as the eyes is urgently needed. Although the humoral immune response is important in the viral containment, the local response in tears has not yet been studied. The aim of our study was twofold: to assess the prevalence of both SARS-CoV-2 RNA and antibodies in tear fluid. Methods In a first series, nasopharyngeal sampling and tear sampling by Schirmer test strips were performed in 26 acutely ill patients with COVID-19 to assess the presence of SARS-CoV-2 RNA by reverse transcription PCR. In a second series, IgG and IgA responses to SARS-CoV-2 spike protein in serum and tear fluid of convalescent individuals (n=22) were compared with control individuals (n=15) by ELISA. Results SARS-CoV-2 RNA was detected in tears of 7/26 (26.9%) patients with COVID-19. None of them had ocular symptoms. Convalescent individuals displayed a significant higher ratio of IgG (p<0.0001) and IgA (p=0.0068) in tears compared with control individuals. A sensitivity of 77.3% and specificity of 93.3% was observed for IgG, and 59.1% and 100% for IgA. Conclusions Our results demonstrate the presence of SARS-CoV-2 RNA and a local IgG and IgA immune response in tear fluid. These data confirm the possibility of SARS-CoV-2 transmission through tear fluid and the importance of the eye as a first defence against SARS-CoV-2, indicating the potential of tears as a non-invasive surrogate for serum in monitoring the host immune response.
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Affiliation(s)
- Astrid Muyldermans
- Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Maria Bjerke
- Laboratory of Neurochemistry, Department of Clinical Biology and Center for Neurosciences, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Thomas Demuyser
- Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Deborah De Geyter
- Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Ingrid Wybo
- Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Oriane Soetens
- Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Ilse Weets
- Laboratory of Neurochemistry, Department of Clinical Biology and Center for Neurosciences, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Robert Kuijpers
- Department of Ophthalmology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Sabine D Allard
- Department of Internal Medicine and Infectious Diseases, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Denis Piérard
- Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Peter P M Raus
- Department of Ophthalmology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
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79
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Ma JYW, Sze YH, Bian JF, Lam TC. Critical role of mass spectrometry proteomics in tear biomarker discovery for multifactorial ocular diseases (Review). Int J Mol Med 2021; 47:83. [PMID: 33760148 PMCID: PMC7992922 DOI: 10.3892/ijmm.2021.4916] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 01/14/2021] [Indexed: 12/14/2022] Open
Abstract
The tear film is a layer of body fluid that maintains the homeostasis of the ocular surface. The superior accessibility of tears and the presence of a high concentration of functional proteins make tears a potential medium for the discovery of non-invasive biomarkers in ocular diseases. Recent advances in mass spectrometry (MS) have enabled determination of an in-depth proteome profile, improved sensitivity, faster acquisition speed, proven variety of acquisition methods, and identification of disease biomarkers previously lacking in the field of ophthalmology. The use of MS allows efficient discovery of tear proteins, generation of reproducible results, and, more importantly, determines changes of protein quantity and post-translation modifications in microliter samples. The present review compared techniques for tear collection, sample preparation, and acquisition applied for the discovery of tear protein markers in normal subjects and multifactorial conditions, including dry eye syndrome, diabetic retinopathy, thyroid eye disease and primary open-angle glaucoma, which require an early diagnosis for treatment. It also summarized the contribution of MS to early discovery by means of disease-related protein markers in tear fluid and the potential for transformation of the tear MS-based proteome to antibody-based assay for future clinical application.
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Affiliation(s)
- Jessica Yuen Wuen Ma
- Laboratory of Experimental Optometry, Centre for Myopia Research, School of Optometry, The Hong Kong Polytechnic University, Kowloon, Hong Kong, SAR, P.R. China
| | - Ying Hon Sze
- Laboratory of Experimental Optometry, Centre for Myopia Research, School of Optometry, The Hong Kong Polytechnic University, Kowloon, Hong Kong, SAR, P.R. China
| | - Jing Fang Bian
- Laboratory of Experimental Optometry, Centre for Myopia Research, School of Optometry, The Hong Kong Polytechnic University, Kowloon, Hong Kong, SAR, P.R. China
| | - Thomas Chuen Lam
- Laboratory of Experimental Optometry, Centre for Myopia Research, School of Optometry, The Hong Kong Polytechnic University, Kowloon, Hong Kong, SAR, P.R. China
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80
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Armstrong L, Collin J, Mostafa I, Queen R, Figueiredo FC, Lako M. In the eye of the storm: SARS-CoV-2 infection and replication at the ocular surface? Stem Cells Transl Med 2021; 10:976-986. [PMID: 33710758 PMCID: PMC8235146 DOI: 10.1002/sctm.20-0543] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/26/2021] [Accepted: 01/30/2021] [Indexed: 01/08/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) first emerged in December 2019 and spread quickly causing the coronavirus disease 2019 (COVID‐19) pandemic. Recent single cell RNA‐Seq analyses have shown the presence of SARS‐CoV‐2 entry factors in the human corneal, limbal, and conjunctival superficial epithelium, leading to suggestions that the human ocular surface may serve as an additional entry gateway and infection hub for SARS‐CoV‐2. In this article, we review the ocular clinical presentations of COVID‐19 and the features of the ocular surface that may underline the overall low ocular SARS‐CoV‐2 infection. We critically evaluate the studies performed in nonhuman primates, ex vivo organ culture ocular models, stem cell derived eye organoids and the differences in infection efficiency observed in different parts of human ocular surface epithelium. Finally, we highlight the additional work that needs to be carried out to understand the immune response of the ocular surface to SARS‐CoV‐2 infection, which can be translated into prophylactic treatments that may be applied to other organ systems.
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Affiliation(s)
- Lyle Armstrong
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle, UK
| | - Joseph Collin
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle, UK
| | - Islam Mostafa
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle, UK
| | - Rachel Queen
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle, UK
| | - Francisco C Figueiredo
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle, UK.,Department of Ophthalmology, Royal Victoria Infirmary and Newcastle University, Newcastle, UK
| | - Majlinda Lako
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle, UK
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81
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Su JZ, Wang Z, Liu XJ, Lv L, Yu GY. Use of saliva flow rate measurement in minor salivary glands autotransplantation for treatment of severe dry eye disease. Br J Ophthalmol 2021; 106:902-907. [PMID: 33674426 PMCID: PMC9234421 DOI: 10.1136/bjophthalmol-2020-317552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 11/21/2020] [Accepted: 01/23/2021] [Indexed: 11/04/2022]
Abstract
AIMS To use minor salivary glands' flow rate (MSGFR) measurement in minor salivary glands (MSGs) autotransplantation for the treatment of severe dry eye disease (DED). METHODS MSGs autotransplantations were performed in 18 eyes (17 patients) with severe DED. MSGFR were measured before operation. The upper or lower lip with higher MSGFR was selected as the donor site. Buccal mucosa was the back-up in cases labial MSGs showing markedly decreased MSGFRs. Two pieces of salivary lobules with the covering mucosa were harvested and transplanted to the recipient beds prepared in both upper and lower lids. RESULTS The donor sites included lower lip in 12 eyes, upper lip in 5 eyes and buccal mucosa in 1 eye. Postoperative follow-up confirmed viable grafts in all cases. The overall subjective relief rate of DED symptoms was 58.8%, with Schirmer test values increasing from 0 mm to 4 mm (p<0.05). The mean preoperative MSGFR was 1.7 (range: 0.9-3.3) µL/min/cm2. ROC analysis indicated an outstanding discrimination power for preoperative MSGFR to predicate postoperative relief of DED symptoms (area under the curve (AUC)=0.948, p<0.01). The maximum sensitivity (100%) and specificity (72.7%) were reached at a cut-off of 1.785 µL/min/cm2. Patients with preoperative MSGFR >1.785 µL/min/cm2 showed greater improvement of Schirmer test values after surgery than those with MSGFR ≤1.785 µL/min/cm2 (p<0.05). CONCLUSION MSGs transplantation proved to be useful for treating severe DED. The amount of postoperative lubrication and the treatment effect were positively correlated with preoperative MSGFR. MSGFR measurement and donor-site selection should be critical steps before the operation.
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Affiliation(s)
- Jia-Zeng Su
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Zhen Wang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China.,Department of Stomatology, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, China
| | - Xiao-Jing Liu
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Lan Lv
- Department of Ophthalmology, Affiliated Beijing Tong Ren Hospital, Capital University of Medical Science, Beijing, China
| | - Guang-Yan Yu
- Department of Oral and Maxillofacial Surgery, Peking University School of Stomatology, Beijing, China
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82
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Pauk SV, Petriček I, Tomić M, Bulum T, Jandroković S, Kalauz M, Masnec S, Jukić T. Manual interferometric device for routine non-invasive tear film break-up time assessment. Semin Ophthalmol 2021; 36:94-102. [PMID: 33641610 DOI: 10.1080/08820538.2021.1884272] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Purpose: To determine the feasibility of non-invasive tear break-up time (NIBUT) assessment using the Handheld tear lipid layer thickness assessment instrument and compare it with the standard tear break-up time (TBUT) test and other dry eye tests.Subjects and methods: 108 subjects were enrolled, 56 with and 52 without dry eye symptoms. Schein questionnaire was used to determine the severity of dry eye symptoms. Ocular signs were assessed by NIBUT, TBUT, lipid layer thickness (LLT), lid-parallel conjunctival folds (LIPCOF), conjunctival hyperemia, and corneal staining.Results: Median NIBUT and TBUT, and other clinical test values significantly differed among the dry eye symptoms group and control group. NIBUT yielded the most significant difference between the groups (NIBUT: 7 sec vs. 17.5 sec, p < .001, Z = 5.94; TBUT: 5 sec vs. 10 sec, p < .001, Z = 4.38; LLT: p = .007; LIPCOF: p < .001, conjunctival hyperemia: p < .047, corneal staining: p < .010). Spearman's test showed a significant correlation between NIBUT and TBUT (p < .001), NIBUT and LLT (p = .001), NIBUT and LIPCOF (p = .019), NIBUT and conjunctival hyperemia (p = .002), and NIBUT and corneal staining (p = .012) in the dry eye symptoms group. NIBUT did not significantly differ among the three measurements in both groups of patients (p = .061, p = .096), while TBUT values did in the control group (p < .001). Short NIBUT values were the main predictors and indicators of dry eye complaints (AOR = 0.87, p < .001), superior to TBUT (AOR = 0.88, p = .008) and other tests even after adjustment for age and gender.Conclusion: NIBUT measured by Handheld instrument is a simple, accessible, practical, and, most of all, reproducible and objective method that might allow NIBUT assessment on a regular basis.
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Affiliation(s)
- Sania Vidas Pauk
- Department of Ophthalmology, Zagreb University Hospital Center, Zagreb, Croatia
| | - Igor Petriček
- Department of Ophthalmology, Zagreb University Hospital Center, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Martina Tomić
- Vuk Vrhovac University Clinic for Diabetes, Endocrinology and Metabolic Diseases, Merkur University Hospital, Zagreb, Croatia
| | - Tomislav Bulum
- School of Medicine, University of Zagreb, Zagreb, Croatia.,Vuk Vrhovac University Clinic for Diabetes, Endocrinology and Metabolic Diseases, Merkur University Hospital, Zagreb, Croatia
| | - Sonja Jandroković
- Department of Ophthalmology, Zagreb University Hospital Center, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Miro Kalauz
- Department of Ophthalmology, Zagreb University Hospital Center, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Sanja Masnec
- Department of Ophthalmology, Zagreb University Hospital Center, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Tomislav Jukić
- Department of Ophthalmology, Zagreb University Hospital Center, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
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Moreira VM, Mascarenhas P, Machado V, Botelho J, Mendes JJ, Taveira N, Almeida MG. Diagnosis of SARS-Cov-2 Infection by RT-PCR Using Specimens Other Than Naso- and Oropharyngeal Swabs: A Systematic Review and Meta-Analysis. Diagnostics (Basel) 2021; 11:diagnostics11020363. [PMID: 33670020 PMCID: PMC7926389 DOI: 10.3390/diagnostics11020363] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/16/2021] [Accepted: 02/19/2021] [Indexed: 02/07/2023] Open
Abstract
The rapid and accurate testing of SARS-CoV-2 infection is still crucial to mitigate, and eventually halt, the spread of this disease. Currently, nasopharyngeal swab (NPS) and oropharyngeal swab (OPS) are the recommended standard sampling techniques, yet, these have some limitations such as the complexity of collection. Hence, several other types of specimens that are easier to obtain are being tested as alternatives to nasal/throat swabs in nucleic acid assays for SARS-CoV-2 detection. This study aims to critically appraise and compare the clinical performance of RT-PCR tests using oral saliva, deep-throat saliva/posterior oropharyngeal saliva (DTS/POS), sputum, urine, feces, and tears/conjunctival swab (CS) against standard specimens (NPS, OPS, or a combination of both). In this systematic review and meta-analysis, five databases (PubMed, Scopus, Web of Science, ClinicalTrial.gov and NIPH Clinical Trial) were searched up to the 30th of December, 2020. Case-control and cohort studies on the detection of SARS-CoV-2 were included. The methodological quality was assessed using the Quality Assessment of Diagnostic Accuracy Studies 2 (QUADAS 2). We identified 1560 entries, 33 of which (1.1%) met all required criteria and were included for the quantitative data analysis. Saliva presented the higher accuracy, 92.1% (95% CI: 70.0-98.3), with an estimated sensitivity of 83.9% (95% CI: 77.4-88.8) and specificity of 96.4% (95% CI: 89.5-98.8). DTS/POS samples had an overall accuracy of 79.7% (95% CI: 43.3-95.3), with an estimated sensitivity of 90.1% (95% CI: 83.3-96.9) and specificity of 63.1% (95% CI: 36.8-89.3). The remaining index specimens could not be adequately assessed given the lack of studies available. Our meta-analysis shows that saliva samples from the oral region provide a high sensitivity and specificity; therefore, these appear to be the best candidates for alternative specimens to NPS/OPS in SARS-CoV-2 detection, with suitable protocols for swab-free sample collection to be determined and validated in the future. The distinction between oral and extra-oral salivary samples will be crucial, since DTS/POS samples may induce a higher rate of false positives. Urine, feces, tears/CS and sputum seem unreliable for diagnosis. Saliva testing may increase testing capacity, ultimately promoting the implementation of truly deployable COVID-19 tests, which could either work at the point-of-care (e.g. hospitals, clinics) or at outbreak control spots (e.g., schools, airports, and nursing homes).
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Affiliation(s)
- Vânia M. Moreira
- Área Departamental de Engenharia Química, Instituto Superior de Engenharia de Lisboa, Rua Conselheiro Emídio Navarro 1, 1959-007 Lisboa, Portugal;
| | - Paulo Mascarenhas
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz–Cooperativa de Ensino Superior CRL, Campus Universitário, Quinta da Granja, 2829-511 Caparica, Portugal; (P.M.); (V.M.); (J.B.); (J.J.M.); (N.T.)
- Evidence-Based Hub, CiiEM, Egas Moniz–Cooperativa de Ensino Superior CRL, Campus Universitário, Quinta da Granja, 2829-511 Caparica, Portugal
| | - Vanessa Machado
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz–Cooperativa de Ensino Superior CRL, Campus Universitário, Quinta da Granja, 2829-511 Caparica, Portugal; (P.M.); (V.M.); (J.B.); (J.J.M.); (N.T.)
- Evidence-Based Hub, CiiEM, Egas Moniz–Cooperativa de Ensino Superior CRL, Campus Universitário, Quinta da Granja, 2829-511 Caparica, Portugal
| | - João Botelho
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz–Cooperativa de Ensino Superior CRL, Campus Universitário, Quinta da Granja, 2829-511 Caparica, Portugal; (P.M.); (V.M.); (J.B.); (J.J.M.); (N.T.)
- Evidence-Based Hub, CiiEM, Egas Moniz–Cooperativa de Ensino Superior CRL, Campus Universitário, Quinta da Granja, 2829-511 Caparica, Portugal
| | - José João Mendes
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz–Cooperativa de Ensino Superior CRL, Campus Universitário, Quinta da Granja, 2829-511 Caparica, Portugal; (P.M.); (V.M.); (J.B.); (J.J.M.); (N.T.)
- Evidence-Based Hub, CiiEM, Egas Moniz–Cooperativa de Ensino Superior CRL, Campus Universitário, Quinta da Granja, 2829-511 Caparica, Portugal
| | - Nuno Taveira
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz–Cooperativa de Ensino Superior CRL, Campus Universitário, Quinta da Granja, 2829-511 Caparica, Portugal; (P.M.); (V.M.); (J.B.); (J.J.M.); (N.T.)
- Research Institute for Medicines, Faculty of Pharmacy, University of Lisbon, 1649-003 Lisbon, Portugal
| | - M. Gabriela Almeida
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz–Cooperativa de Ensino Superior CRL, Campus Universitário, Quinta da Granja, 2829-511 Caparica, Portugal; (P.M.); (V.M.); (J.B.); (J.J.M.); (N.T.)
- UCIBIO, REQUIMTE, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Monte de Caparica, Portugal
- Correspondence: ; Tel.: +(351)-212-964-800
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Yamanishi R, Okada N, Shimizu E, Fujishima H. Elevated levels of prostaglandin E 2 in the tears of patients with severe allergic conjunctivitis and primary cultured conjunctival cells are suppressed by ketotifen and dexamethasone. BMJ Open Ophthalmol 2021; 6:e000571. [PMID: 33553650 PMCID: PMC7839870 DOI: 10.1136/bmjophth-2020-000571] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 12/06/2020] [Accepted: 12/10/2020] [Indexed: 12/14/2022] Open
Abstract
Objective We examined the production of prostaglandin E2 (PGE2), which is the key prostaglandin involved in inflammatory disorders of the ocular surface. Tears and conjunctival fibroblasts were evaluated in order to assess allergic inflammation and the effect of specific drugs. Methods and analysis PGE2 was measured in tears from both patients and normal volunteers. Primary cultures of human conjunctival fibroblasts were incubated with interleukin (IL)-4 and tumour necrosis factor (TNF)-α with or without ketotifen fumarate or dexamethasone. The culture supernatants were removed 24 hours after exposure and the concentrations of PGE2 were quantified by ELISA. Results Significantly higher levels of PGE2 were observed in the tears of patients with severe allergic conjunctivitis than in those with post-surgical inflammation (p=0.02), and this production was reduced by eye drops. Stimulation with IL-4 and TNF-α induced the generation of PGE2 in supernatants of conjunctival fibroblasts, and this production was significantly downregulated by ketotifen fumarate or steroids. Conclusion PGE2 may participate in the pathogenesis of severe ocular allergic disease, and both ketotifen fumarate and steroid reduce the production of PGE2.
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Affiliation(s)
- Ryutaro Yamanishi
- Department of Ophthalmology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Naoko Okada
- Department of Pharmaceutical Sciences, Nihon Pharmaceutical University, Kita adachi-gun, Saitama, Japan
| | - Eisuke Shimizu
- Department of Ophthalmology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hiroshi Fujishima
- Department of Ophthalmology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan.,Ophthalmology, Tsurumi University Dental Hospital, Yokohama, Kanagawa, Japan
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85
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Zhuo H, Pan L, Xu Y, Li J. Functional, Magnetic Resonance Imaging, and Second-Look Arthroscopic Outcomes After Pullout Repair for Avulsion Tears of the Posterior Lateral Meniscus Root. Am J Sports Med 2021; 49:450-458. [PMID: 33382344 DOI: 10.1177/0363546520976635] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Little data exist in the literature regarding second-look arthroscopic outcomes after pullout repair for avulsion tears of the posterior lateral meniscus root. PURPOSE To (1) assess the functional, magnetic resonance imaging (MRI), and second-look arthroscopic outcomes after pullout repair for avulsion tears of the posterior lateral meniscus root; (2) determine which demographic and clinical factors influenced healing of the repaired posterior lateral meniscus root; and (3) compare outcomes between different meniscal healing status groups. STUDY DESIGN Case series; Level of evidence, 4. METHODS A total of 31 patients underwent pullout repair for avulsion tears of the posterior lateral meniscus root and had a minimum 2-year follow-up. Functional outcomes were assessed using patient-reported scores (Lysholm, Tegner, and International Knee Documentation Committee [IKDC] scores). Lateral meniscal extrusion, cartilage degeneration of the lateral compartment, and healing of the repaired posterior lateral meniscus root were assessed via MRI. The healing status was also assessed using second-look arthroscopic surgery, and the patients were divided into different healing status groups. RESULTS The postoperative patient-reported scores improved significantly compared with the preoperative values (P = .001). Lateral meniscal extrusion was reduced significantly from 3.37 ± 0.82 mm preoperatively to 0.63 ± 0.80 mm at final follow-up (P = .001). The grade of cartilage degeneration of the lateral compartment progressed from 0.69 ± 0.67 preoperatively to 0.95 ± 0.83 at final follow-up (P = .213). MRI scans showed complete healing in 28 patients (90.3%) and partial healing in 3 patients (9.7%). Second-look arthroscopic surgery showed stable healing in 18 of 23 patients (78.3%) and lax healing in 5 of 23 patients (21.7%). Patients with stable healing had significantly higher Lysholm and IKDC scores, more reduction of meniscal extrusion, and less progression of cartilage degeneration than did patients with lax healing (P < .05). Concomitant anterior cruciate ligament reconstruction was found to significantly positively influence healing of the repaired posterior lateral meniscus root (P = .047). CONCLUSION Pullout repair for avulsion tears of the posterior lateral meniscus root yielded significantly improved patient-reported scores, reduced meniscal extrusion, and a satisfactory healing rate at final follow-up. Patients with stable healing had significantly better functional and MRI outcomes than did patients with lax healing.
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Affiliation(s)
- Hongwu Zhuo
- Rehabilitation Hospital affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou, China.,Fujian Key Laboratory of Rehabilitation Technology, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Ling Pan
- Rehabilitation Hospital affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou, China.,Fujian Key Laboratory of Rehabilitation Technology, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Yangkai Xu
- Fujian Key Laboratory of Rehabilitation Technology, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Jian Li
- Rehabilitation Hospital affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou, China.,Fujian Key Laboratory of Rehabilitation Technology, Fujian University of Traditional Chinese Medicine, Fuzhou, China
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86
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Yan Y, Zeng B, Zhang Z, Hu C, Yan M, Li B, Zhang X, Chen X. Detection of SARS-CoV-2 in Simultaneously Collected Tear and Throat Swab Samples from the Patients with 2019- new SARS-CoV-2 Infection Disease: A Single Center Cross-sectional Study. Ophthalmic Epidemiol 2021; 28:369-375. [PMID: 33491542 DOI: 10.1080/09286586.2021.1875011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Objecive: This study aimed to evaluate whether Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) can be detected in the tears in the eyes of Coronavirus Disease 2019 (COVID-2019) infected patients and compare the detection consistency of two simultaneously collected samples, from the tears and throat swabs.Methods: A total of 35 COVID-2019 patients were included in this cross-sectional case series study. Throat samples from all enrolled patients were collected with sampling swab, and simultaneously, tear samples were collected with sampling swab from 9 patients (No.1-9) and with Schirmer's strip from the remaining patients (No.10-35) (bilateral eyes for all patients). Sample collecting and testing were performed in three separate time points: first from patients No.1-9, second from patients No.10-29, and third from patients No. 30-35. Reverse-transcriptase-polymerase-chain-reaction (RT-PCR) assay was performed.Results: Among enrolled patients, 29 (No.1-29) had mild or moderate clinical symptoms and 6 (No.30-35) had severe symptoms. The mean time interval from the sample collection day to diagnosis confirmation day was 9.71 ± 6.50 days (ranged from 3 to 29 days). None of the patients had conjunctivitis. Nineteen out of 35 (54.3%) throat samples presented positive Rt-PCR results. Three (no.13,21,31) out of 35 (8.6%) tear samples presented positive RT-PCR results. Two (no.21, 31) of these three patients were throat swab positive and one (No. 13) was negative. The consistency analysis indicated that tears and throat samples showed poor consistency (Kappa = -0.009, P = .9).The cycle threshold value (Ct-value) of tear samples collected by sampling swab was significantly higher than that by Schirmer's strip (t = 2.288, P = .03).Conclusion: In spite of the low SARS-CoV-2 positive detection rate of tear samples from COVID-2019 patients, we cannot fully rule out the transmission by ocular surface. Whether tear testing can be used as an aid in judging of SARS-CoV-2 infection need further investigation.
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Affiliation(s)
- Ying Yan
- Department of Ophthalmology, Central Theater General Hospital, Wuhan, China
| | - Bo Zeng
- Department of Ophthalmology, Central Theater General Hospital, Wuhan, China
| | - Zhang Zhang
- Laboratory of Vaccine and Antibody Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Cheng Hu
- Department of Ophthalmology, Central Theater General Hospital, Wuhan, China
| | - Ming Yan
- Department of Ophthalmology, Central Theater General Hospital, Wuhan, China
| | - Bixi Li
- Department of Anesthesiology, Central Theater General Hospital, Wuhan, China
| | - Xiaopeng Zhang
- Laboratory of Vaccine and Antibody Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Xiao Chen
- Department of Ophthalmology, Central Theater General Hospital, Wuhan, China
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87
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Ramasubramanian A, Ahmed SF, Borchman D. Changes in meibum composition following plaque bachytherapy for choroidal melanoma. BMJ Open Ophthalmol 2020; 5:e000614. [PMID: 33294624 PMCID: PMC7689590 DOI: 10.1136/bmjophth-2020-000614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/27/2020] [Accepted: 11/12/2020] [Indexed: 11/03/2022] Open
Abstract
Objectives Dry eye is common when external beam radiation is used for the treatment of choroidal melanoma (CM). As meibum structure and composition have been related to dry eye, we determined if plaque bachytherapy for CM alters meibum composition. Design 1H-NMR spectroscopy was used to measure the lipid composition of meibum. Setting The University of Louisville, Kentucky, USA. Participants All 13 participants had CM and one participant had iris melanoma. Main outcome measures Cholesteryl ester (CE) to wax ester (WE) ratio, amount of meibum esters (ME) and meibum lipid saturation were measured. Results ME decreased by 80%±18% (±99% CI) in 11 eyes that were treated compared with the contralateral untreated eye. ME increased by 181% in two eyes that were treated compared with the contralateral untreated eye. The mole % CE/WE for meibum was significantly (p<0.0001) 67% lower in eyes that were irradiated compared with control eyes from donors without CM and were not treated. Plaque brachytherapy induced the de-esterification of CE. The intensity of the meibum cis double bond resonances did not change significantly (p>0.05). Conclusion Eyes that had plaque brachytherapy had a lower amount of expressible meibum and a lower CE/WE ratio compared with meibum from the contralateral eye that received no treatment and eyes that did not have uveal melanoma. Both the quality and quantity of meibum should be considered in designing a therapy for dry eye after plaque brachytherapy.
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Affiliation(s)
| | - Simra Fatima Ahmed
- Department of Ophthtalmology, University of Louisville School of Medicine, Louisville, Kentucky, USA
| | - Douglas Borchman
- Department of Ophthtalmology, University of Louisville School of Medicine, Louisville, Kentucky, USA
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88
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Georgiev GA, Gh MS, Romano J, Dias Teixeira KL, Struble C, Ryan DS, Sia RK, Kitt JP, Harris JM, Hsu KL, Libby A, Odrich MG, Suárez T, McKown RL, Laurie GW. Lacritin proteoforms prevent tear film collapse and maintain epithelial homeostasis. J Biol Chem 2020; 296:100070. [PMID: 33187980 PMCID: PMC7948570 DOI: 10.1074/jbc.ra120.015833] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 11/10/2020] [Accepted: 11/13/2020] [Indexed: 12/14/2022] Open
Abstract
Lipids in complex, protein-enriched films at air/liquid interfaces reduce surface tension. In the absence of this benefit, the light refracting and immunoprotective tear film on eyes would collapse. Premature collapse, coupled with chronic inflammation compromising visual acuity, is a hallmark of dry eye disease affecting 7 to 10% of individuals worldwide. Although collapse seems independent of mutation (unlike newborn lung alveoli), selective proteome and possible lipidome changes have been noted. These include elevated tissue transglutaminase and consequent inactivation through C-terminal cross-linking of the tear mitogen lacritin, leading to significant loss of lacritin monomer. Lacritin monomer restores homeostasis via autophagy and mitochondrial fusion and promotes basal tearing. Here, we discover that lacritin monomer C-terminal processing, inclusive of cysteine, serine, and metalloproteinase activity, generates cationic amphipathic α-helical proteoforms. Such proteoforms (using synthetic peptide surrogates) act like alveolar surfactant proteins to rapidly bind and stabilize the tear lipid layer. Immunodepletion of C- but not N-terminal proteoforms nor intact lacritin, from normal human tears promotes loss of stability akin to human dry eye tears. Stability of these and dry eye tears is rescuable with C- but not N-terminal proteoforms. Repeated topical application in rabbits reveals a proteoform turnover time of 7 to 33 h with gradual loss from human tear lipid that retains bioactivity without further processing. Thus, the processed C-terminus of lacritin that is deficient or absent in dry eye tears appears to play a key role in preventing tear film collapse and as a natural slow release mechanism that restores epithelial homeostasis.
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Affiliation(s)
- Georgi A Georgiev
- Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | | | - Jeff Romano
- Department of Cell Biology, University of Virginia, Charlottesville, Virginia, USA
| | | | - Craig Struble
- Drug Metabolism, Covance Laboratories Inc, Madison, Wisconsin, USA
| | - Denise S Ryan
- Warfighter Refractive Eye Surgery Program and Research Center at Fort Belvoir, Fort Belvoir, Virginia, USA
| | - Rose K Sia
- Warfighter Refractive Eye Surgery Program and Research Center at Fort Belvoir, Fort Belvoir, Virginia, USA
| | - Jay P Kitt
- Department of Chemistry, University of Utah, Salt Lake City, Utah, USA
| | - Joel M Harris
- Department of Chemistry, University of Utah, Salt Lake City, Utah, USA
| | - Ku-Lung Hsu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia, USA
| | - Adam Libby
- Department of Chemistry, University of Virginia, Charlottesville, Virginia, USA
| | - Marc G Odrich
- Department of Ophthalmology, University of Virginia, Charlottesville, Virginia, USA
| | - Tatiana Suárez
- Department of Research, Development and Innovation, FAES FARMA, Bizkaia, Spain
| | - Robert L McKown
- Department of Integrated Science and Technology, James Madison University, Harrisonburg, Virginia, USA
| | - Gordon W Laurie
- Department of Cell Biology, University of Virginia, Charlottesville, Virginia, USA; Department of Ophthalmology, University of Virginia, Charlottesville, Virginia, USA; Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA.
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89
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Falk M, Psotta C, Cirovic S, Shleev S. Non-Invasive Electrochemical Biosensors Operating in Human Physiological Fluids. Sensors (Basel) 2020; 20:E6352. [PMID: 33171750 PMCID: PMC7664326 DOI: 10.3390/s20216352] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 11/03/2020] [Accepted: 11/04/2020] [Indexed: 12/14/2022]
Abstract
Non-invasive healthcare technologies are an important part of research and development nowadays due to the low cost and convenience offered to both healthcare receivers and providers. This work overviews the recent advances in the field of non-invasive electrochemical biosensors operating in secreted human physiological fluids, viz. tears, sweat, saliva, and urine. Described electrochemical devices are based on different electrochemical techniques, viz. amperometry, coulometry, cyclic voltammetry, and impedance spectroscopy. Challenges that confront researchers in this exciting area and key requirements for biodevices are discussed. It is concluded that the field of non-invasive sensing of biomarkers in bodily fluid is highly convoluted. Nonetheless, if the drawbacks are appropriately addressed, and the pitfalls are adroitly circumvented, the approach will most certainly disrupt current clinical and self-monitoring practices.
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Affiliation(s)
- Magnus Falk
- Department of Biomedical Science, Faculty of Health and Society, and Biofilms—Research Center for Biointerfaces, Malmö University, 20506 Malmö, Sweden; (M.F.); (C.P.); (S.C.)
| | - Carolin Psotta
- Department of Biomedical Science, Faculty of Health and Society, and Biofilms—Research Center for Biointerfaces, Malmö University, 20506 Malmö, Sweden; (M.F.); (C.P.); (S.C.)
- Aptusens AB, 293 94 Kyrkhult, Sweden
| | - Stefan Cirovic
- Department of Biomedical Science, Faculty of Health and Society, and Biofilms—Research Center for Biointerfaces, Malmö University, 20506 Malmö, Sweden; (M.F.); (C.P.); (S.C.)
| | - Sergey Shleev
- Department of Biomedical Science, Faculty of Health and Society, and Biofilms—Research Center for Biointerfaces, Malmö University, 20506 Malmö, Sweden; (M.F.); (C.P.); (S.C.)
- Aptusens AB, 293 94 Kyrkhult, Sweden
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90
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Magliulo G, Pace A, Plateroti R, Plateroti AM, Cascella R, Solito C, Rossetti V, Iannella G. Laryngopharyngeal reflux disease in adult patients: tears and pepsin. J BIOL REG HOMEOS AG 2020; 34:715-720. [PMID: 32536115 DOI: 10.23812/19-437-l-26] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- G Magliulo
- Sense Organs Department, Sapienza University of Rome
| | - A Pace
- Sense Organs Department, Sapienza University of Rome
| | - R Plateroti
- Sense Organs Department, Sapienza University of Rome
| | - A M Plateroti
- Sense Organs Department, Sapienza University of Rome
| | - R Cascella
- Laboratory of Genomic Medicine UILDM, IRCCS Santa Lucia Foundation, Rome, Italy.,Department of Chemical Pharmaceutical and Biomolecular Technologies, Catholic University "Our Lady of Good Counsel" Laprakë, RrugaDritanHoxha, Tirana, Albania
| | - C Solito
- Sense Organs Department, Sapienza University of Rome
| | - V Rossetti
- Sense Organs Department, Sapienza University of Rome
| | - G Iannella
- Sense Organs Department, Sapienza University of Rome
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91
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Kaya H, Çalışkan A, Okul M, Sarı T, Akbudak İH. Detection of SARS-CoV-2 in the tears and conjunctival secretions of Coronavirus disease 2019 patients. J Infect Dev Ctries 2020; 14:977-981. [PMID: 33031084 DOI: 10.3855/jidc.13224] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/30/2020] [Indexed: 10/31/2022] Open
Abstract
INTRODUCTION Current studies suggest that tears and conjunctival secretions may be an important transmission route in coronavirus disease 2019 (COVID-19). The study aims to evaluate the presence of severe acute respiratory syndrome Coronavirus-2 (SARS-CoV-2) virus in tears and conjunctival secretion of patients with COVID-19. METHODOLOGY A prospective interventional case series study was performed, and 32 patients with COVID-19 were selected at the Pamukkale University Hospital from 15 to 22 May 2020. The tear and conjunctival samples were collected by a conjunctival swab. Each specimen was sent to the laboratory for reverse transcription-polymerase chain reaction (RT-PCR) analyses. To avoid cross-infection, gloves and personal protective equipment were changed after collecting each sample. RESULTS 32 patients (18 male, 14 female) with Covid-19 were included in this cross-sectional study. The average age of the patients was 52.81 ± 16.76 years. By the time of the first collection of conjunctival-tear samples, the mean time of the onset of complaints was 6.84 ± 6.81 (1-35) days. Tear-conjunctival samples from 5 patients (16%) without conjunctivitis yielded positive PCR results, 3 of whom had positive and 2 negative nasopharyngeal PCR results. CONCLUSIONS Five of 32 patients (16 %) without conjunctivitis or any eye symptoms had viral RNA in their tear-conjunctival samples. The possibility of transmission via tears and conjunctival secretions should be recognized even in the absence of conjunctivitis or other ocular manifestations.
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Affiliation(s)
- Hüseyin Kaya
- Ophthalmology Department, Pamukkale University, Denizli, Turkey.
| | - Ahmet Çalışkan
- Department of Medical Microbiology, Pamukkale University, Denizli, Turkey.
| | - Mehmet Okul
- Department of Medical Microbiology, Pamukkale University, Denizli, Turkey.
| | - Tuğba Sarı
- Department of Infectious Diseases and Clinical Microbiology, Pamukkale University, Denizli, Turkey.
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92
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Lande K, Gupta J, Ranjan R, Kiran M, Torres Solis LF, Solís Herrera A, Aliev G, Karnati R. Exosomes: Insights from Retinoblastoma and Other Eye Cancers. Int J Mol Sci 2020; 21:E7055. [PMID: 32992741 DOI: 10.3390/ijms21197055] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 02/07/2023] Open
Abstract
Exosomes, considered as cell debris or garbage bags, have been later characterized as nanometer-sized extracellular double-membrane lipid bilayer bio-vesicles secreted by the fusion of vesicular bodies with the plasma membrane. The constituents and the rate of exosomes formation differ in different pathophysiological conditions. Exosomes are also observed and studied in different parts of the eye, like the retina, cornea, aqueous, and vitreous humor. Tear fluid consists of exosomes that are shown to regulate various cellular processes. The role of exosomes in eye cancers, especially retinoblastoma (RB), is not well explored, although few studies point towards their presence. Retinoblastoma is an intraocular tumor that constitutes 3% of cases of cancer in children. Diagnosis of RB may require invasive procedures, which might lead to the spread of the disease to other parts. Due to this reason, better ways of diagnosis are being explored. Studies on the exosomes in RB tumors and serum might help designing better diagnostic approaches for RB. In this article, we reviewed studies on exosomes in the eye, with a special emphasis on RB. We also reviewed miRNAs expressed in RB tumor, serum, and cell lines and analyzed the targets of these miRNAs from the proteins identified in the RB tumor exosomes. hsa-miR-494 and hsa-miR-9, upregulated and downregulated, respectively in RB, have the maximum number of targets. Although oppositely regulated, they share the same targets in the proteins identified in RB tumor exosomes. Overall this review provides the up-to-date progress in the area of eye exosome research, with an emphasis on RB.
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93
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Longstaffe R, Dickerson P, Thigpen CA, Shanley E, Kissenberth MJ, Folk J, Pill SG. Both open and endoscopic gluteal tendon repairs lead to functional improvement with similar failure rates: a systematic review. J ISAKOS 2020; 6:28-34. [PMID: 33833043 DOI: 10.1136/jisakos-2020-000474] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/12/2020] [Accepted: 07/29/2020] [Indexed: 11/03/2022]
Abstract
IMPORTANCE Operative treatment of gluteal tendon tears is becomingly increasingly more common with varying surgical techniques and rehabilitation protocols. OBJECTIVE To perform a systematic review of gluteal tendon repair as it relates to tear characteristics, rehabilitation protocols, patient-reported outcomes, satisfaction, resolution of gait deviation and complication rates. EVIDENCE REVIEW A comprehensive literature search of PubMed and Embase/MEDLINE was used to identify all literature pertaining to gluteal tendon repair. A total of 389 articles were identified. FINDINGS A total of 22 studies (611 hips) were included in this review. The majority of tears were noted to be partial thickness (77.9% vs 22.1%). Both arthroscopic and open repair demonstrated improvements in functional outcomes. Within studies documenting gait deviation, 54% were noted to have gait deviation preoperatively, of which approximately 70% had resolution following repair. On average, abduction strength increased almost one whole grade (0.84) following repair. Overall complication rate was found to be 5.2% (20 of 388 hips). Endoscopic repair demonstrated a decreased complication rate compared with open (0.7% vs 7.8%). Retear rate was found to be 3.8%, with open repair having a slightly increased rate compared with endoscopic repair (3.4% vs 4.1%). CONCLUSIONS AND RELEVANCE The majority of tears tend to be partial thickness with involvement of gluteus medius in almost all cases and concomitant involvement of gluteus minimus in close to half of cases. Both endoscopic and open gluteal tendon repairs resulted in improvements in outcomes and functional improvement. Retear rates were similar between the two repair techniques, while endoscopic repair demonstrated a lower complication rate. LEVEL OF EVIDENCE Level IV, systematic review.
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Affiliation(s)
- Robert Longstaffe
- University of Manitoba Department of Surgery, Section Orthopaedics, Pan Am Clinic, Winnipeg, Manitoba, Canada
| | - Patrick Dickerson
- Prisma Health Steadman Hawkins Clinic of the Carolinas, Greenville, South Carolina, USA
| | - Charles A Thigpen
- Prisma Health Steadman Hawkins Clinic of the Carolinas, Greenville, South Carolina, USA.,ATI Physical Therapy, Greenville, South Carolina, USA
| | - Ellen Shanley
- Prisma Health Steadman Hawkins Clinic of the Carolinas, Greenville, South Carolina, USA.,ATI Physical Therapy, Greenville, South Carolina, USA
| | - Michael J Kissenberth
- Prisma Health Steadman Hawkins Clinic of the Carolinas, Greenville, South Carolina, USA
| | - Jason Folk
- Prisma Health Steadman Hawkins Clinic of the Carolinas, Greenville, South Carolina, USA
| | - Stephan G Pill
- Prisma Health Steadman Hawkins Clinic of the Carolinas, Greenville, South Carolina, USA
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94
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Mahmoud H, Ammar H, El Rashidy A, Ali AH, Hefny HM, Mounir A. Assessment of Coronavirus in the Conjunctival Tears and Secretions in Patients with SARS-CoV-2 Infection in Sohag Province, Egypt. Clin Ophthalmol 2020; 14:2701-2708. [PMID: 32982162 PMCID: PMC7508560 DOI: 10.2147/opth.s270006] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 08/31/2020] [Indexed: 01/01/2023] Open
Abstract
Purpose To assess SARS-CoV-2 virus in conjunctival tears and secretions of positive confirmed COVID-19 patients. Methods A case series study that included 28 positive COVID-19 patients confirmed with nasopharyngeal swab in the period 18-28 May 2020 at Sohag Tropical Medicine Hospital. Tears and conjunctival secretions of these confirmed positive cases were collected with disposable sampling swabs at interval of 3 days after admission due to respiratory symptoms. They were examined for the presence of SARS-CoV-2 by reverse transcription-polymerase chain reaction (RT-PCR) assay. Results Thirteen (46.43%) patients were stable, 4 (14.28%) patients suffered from dyspnea, 3 (10.72%) patients suffered from high fever, 5 (17.85%) patients suffered from cough, and 3 (10.72%) patients were on mechanical ventilation. Ten (35.71%) patients suffered from conjunctivitis. Tear and conjunctival swabs were positive in 8 (28.57%) patients, while other patients' swabs were negative (71.43%). Out of 10 patients with conjunctival manifestations, 3 patients had SARS-CoV-2 in their conjunctiva using (RT-PCR) test. Out of the 18 patients with no conjunctival manifestations, 5 patients had positive SARS-CoV-2 in their conjunctiva using (RT-PCR) test. Conclusion The SARS-CoV-2 virus could be found in tears and conjunctival secretions in SARS-CoV-2 patients with or without conjunctivitis.
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Affiliation(s)
- Hany Mahmoud
- Sohag Faculty of Medicine, Ophthalmology Department, Sohag University, Sohag, Egypt
| | - Hatem Ammar
- Sohag Faculty of Medicine, Ophthalmology Department, Sohag University, Sohag, Egypt
| | - Amr El Rashidy
- Tropical Medicine, Sohag Tropical Medicine Hospital, Sohag, Egypt
| | - Amal H Ali
- Microbiology and Immunology, Department of Microbiology, Aswan University, Aswan, Egypt
| | - Hesham M Hefny
- Clinical Pathology Department, Sohag University, Sohag, Egypt
| | - Amr Mounir
- Sohag Faculty of Medicine, Ophthalmology Department, Sohag University, Sohag, Egypt
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95
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La Distia Nora R, Putera I, Khalisha DF, Septiana I, Ridwan AS, Sitompul R. Are eyes the windows to COVID-19? Systematic review and meta-analysis. BMJ Open Ophthalmol 2020; 5:e000563. [PMID: 34192152 PMCID: PMC7476422 DOI: 10.1136/bmjophth-2020-000563] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/10/2020] [Accepted: 08/29/2020] [Indexed: 01/08/2023] Open
Abstract
Objective To review and critically appraise the ocular manifestation and the presence of SARS-CoV-2 through PCR positivity from ocular samples in COVID-19-related patients. Moreover, to evaluate the time and severity association of ocular manifestation to systemic disease of COVID-19. Methods and analysis A systematic literature search from PubMed, ScienceDirect and Google Scholar databases was performed using standardised Preferred Reporting Items for Systematic Reviews and Meta-Analyses guideline. Selected keywords were related to COVID-19, ocular manifestation and PCR testing of SARS-CoV-2. Studies were assessed for their validity, and the data were extracted by two independent reviewers. Observational, case series and case report studies were included if they met the selection criteria. Meta-analysis was performed to estimate the pooled prevalence of ocular manifestations and PCR positivity from tears. Results Thirty-one articles were qualitatively reviewed, and 14 studies were included in the meta-analysis. The pooled prevalence of ocular manifestation among COVID-19-related patients was 0.05 (95% CI 0.02% to 0.08). The overall PCR from tears samples positivity rate from COVID-19-related patients presenting with ocular manifestation was 0.38 (95% CI 0.14% to 0.65). Ocular manifestation could precede systemic manifestation in about 0.28 (95% CI 0.05% to 0.58) of COVID-19-related patients with ocular manifestations. Besides, ocular manifestation was not associated with a severe form of COVID-19. Conclusion Although the overall number of ocular manifestation and SARS-CoV-2 PCR positivity rate from ocular samples was very low, around a quarter of COVID-19-related patients with ocular manifestation presented their ocular manifestation earlier than the systemic manifestation regardless of the severity. Interestingly, SARS-CoV-2 PCR was positive from one-third of ocular samples, which could potentially be the source of infection to the respiratory tract and the environment, although the infectivity is yet to be determined.
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Affiliation(s)
- Rina La Distia Nora
- Department of Ophthalmology, Faculty of Medicine, Universitas Indonesia - Cipto Mangunkusumo Kirana Eye Hospital, Jakarta, Indonesia.,Department of Immunology, Erasmus Medical Center, Rotterdam, Netherlands
| | - Ikhwanuliman Putera
- Department of Ophthalmology, Faculty of Medicine, Universitas Indonesia - Cipto Mangunkusumo Kirana Eye Hospital, Jakarta, Indonesia
| | - Dhiya Farah Khalisha
- Department of Ophthalmology, Faculty of Medicine, Universitas Indonesia - Cipto Mangunkusumo Kirana Eye Hospital, Jakarta, Indonesia
| | - Indah Septiana
- Department of Ophthalmology, Faculty of Medicine, Universitas Indonesia - Cipto Mangunkusumo Kirana Eye Hospital, Jakarta, Indonesia
| | - Asri Salima Ridwan
- Department of Ophthalmology, Faculty of Medicine, Universitas Indonesia - Cipto Mangunkusumo Kirana Eye Hospital, Jakarta, Indonesia
| | - Ratna Sitompul
- Department of Ophthalmology, Faculty of Medicine, Universitas Indonesia - Cipto Mangunkusumo Kirana Eye Hospital, Jakarta, Indonesia
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96
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Picó A, Espert R, Gadea M. How Our Gaze Reacts to Another Person's Tears? Experimental Insights Into Eye Tracking Technology. Front Psychol 2020; 11:2134. [PMID: 32982872 PMCID: PMC7492655 DOI: 10.3389/fpsyg.2020.02134] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 07/30/2020] [Indexed: 02/03/2023] Open
Abstract
Crying is an ubiquitous human behavior through which an emotion is expressed on the face together with visible tears and constitutes a slippery riddle for researchers. To provide an answer to the question "How our gaze reacts to another person's tears?," we made use of eye tracking technology to study a series of visual stimuli. By presenting an illustrative example through an experimental setting specifically designed to study the "tearing effect," the present work aims to offer methodological insight on how to use eye-tracking technology to study non-verbal cues. A sample of 30 healthy young women with normal visual acuity performed a within-subjects task in which they evaluated images of real faces with and without tears while their eye movements were tracked. Tears were found to be a magnet for visual attention in the task of facial attribution, facilitating a greater perception of emotional intensity. Moreover, the inspection pattern changed qualitatively and quantitatively, with our participants becoming fully focused on the tears when they were visible. The mere presence of a single tear running down a cheek was associated with an increased emotional inference and greater perception of sincerity. Using normalized and validated tools (Reading the Eyes in the Mind Test and the SALAMANCA screening test for personality disorders), we measured the influence of certain characteristics of the participants on their performance of the experimental task. On the one hand, a higher level of cognitive empathy helped to classify tearful faces with higher emotional intensity and tearless faces with less emotional intensity. On the other hand, we observed that less sincerity was attributed to the tearful faces as the SALAMANCA test scores rose in clusters A (strange and extravagant) and B (immature and emotionally unstable) of our sample. The present findings highlight the advantages of using eye tracking technology to study non-verbal cues and draw attention to methodological issues that should be taken into account. Further exploration of the relationship between empathy and tear perception could be a fruitful avenue of future research using eye tracking.
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Affiliation(s)
- Alfonso Picó
- Department of Psychobiology, Faculty of Psychology, Universitat de València, Valencia, Spain
| | - Raul Espert
- Department of Psychobiology, Faculty of Psychology, Universitat de València, Valencia, Spain
| | - Marien Gadea
- Department of Psychobiology, Faculty of Psychology, Universitat de València, Valencia, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM)-Mental Health, Madrid, Spain
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97
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Zickfeld JH, Arriaga P, Santos SV, Schubert TW, Seibt B. Tears of joy, aesthetic chills and heartwarming feelings: Physiological correlates of Kama Muta. Psychophysiology 2020; 57:e13662. [PMID: 32786039 DOI: 10.1111/psyp.13662] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 07/09/2020] [Accepted: 07/13/2020] [Indexed: 10/23/2022]
Abstract
Situations involving increased closeness or exceptional kindness are often labeled as moving or touching and individuals often report bodily symptoms, including tears, goosebumps, and warmth in the body. Recently, the kama muta framework has been proposed as a cross-cultural conceptualization of these experiences. Prior research on kama muta has mostly relied on subjective reports. Thus, our main goal of the present project was to examine the pattern of physiological responses to kama muta inducing videos and compare it to the patterns for the similar, though distinct emotions of sadness and awe. One hundred forty-four Portuguese and Norwegian participants were individually exposed to all three emotion conditions. Several psychophysiological indexes of the autonomic nervous system were collected continuously during exposure, including cardiovascular, respiratory, and electrodermal activity, facial EMG, skin temperature, as well as piloerection and lachrymation using cameras. Overall, the results partly replicated previous findings on being moved experiences and self-report studies. Strong self-reported experiences of kama muta were associated with increased phasic skin conductance, skin temperature, piloerection, and zygomaticus activity, while they were associated with reduced heart rate, respiration rate, and tonic skin conductance. The physiological profile of kama muta was successfully distinguished from sadness and awe, partly corroborating self-report evidence. We obtained no clear evidence of a kama muta association with the occurrence of lachrymation or heart rate variability. Our findings provide a systematic overview of psychophysiological response to experiences of kama muta, and help to inform future research on this emotion and positive emotions in general.
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Affiliation(s)
- Janis H Zickfeld
- Department of Psychology, University of Oslo, Oslo, Norway.,Mannheimer Zentrum für Europäische Sozialforschung, University of Mannheim, Mannheim, Germany
| | - Patrícia Arriaga
- Departamento de Psicologia Social e das Organizações (ECSH), ISCTE-Instituto Universitário de Lisboa, CIS-IUL, Lisbon, Portugal
| | - Sara Vilar Santos
- Departamento de Psicologia Social e das Organizações (ECSH), ISCTE-Instituto Universitário de Lisboa, CIS-IUL, Lisbon, Portugal
| | - Thomas W Schubert
- Department of Psychology, University of Oslo, Oslo, Norway.,Departamento de Psicologia Social e das Organizações (ECSH), ISCTE-Instituto Universitário de Lisboa, CIS-IUL, Lisbon, Portugal
| | - Beate Seibt
- Department of Psychology, University of Oslo, Oslo, Norway.,Departamento de Psicologia Social e das Organizações (ECSH), ISCTE-Instituto Universitário de Lisboa, CIS-IUL, Lisbon, Portugal
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Schussler O, Lila N, Grau J, Ruel M, Lecarpentier Y, Carpentier A. Possible Link Between the ABO Blood Group of Bioprosthesis Recipients and Specific Types of Structural Degeneration. J Am Heart Assoc 2020; 9:e015909. [PMID: 32698708 PMCID: PMC7792238 DOI: 10.1161/jaha.119.015909] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Background Pigs/bovines share common antigens with humans: α-Gal, present in all pigs/bovines close to the human B-antigen; and AH-histo-blood-group antigen, identical to human AH-antigen and present only in some animals. We investigate the possible impact of patients' ABO blood group on bioprosthesis structural valve degeneration (SVD) through calcification/pannus/tears/perforations for patients ≤60 years at implantation. Methods and Results This was a single-center study (Paris, France) that included all degenerative bioprostheses explanted between 1985 and 1998, mostly porcine bioprostheses (Carpentier-Edwards second/third porcine bioprostheses) and some bovine bioprostheses. For the period 1998 to 2014, only porcine bioprostheses with longevity ≥13 years were included (total follow-up ≥29 years). Except for blood groups, important predictive factors for SVD were prospectively collected (age at implantation/longevity/number/site/sex/SVD types) and analyzed using logistic regression. All variables were available for 500 explanted porcine bioprostheses. By multivariate analyses, the A group was associated with an increased risk of: tears (odds ratio[OR], 1.61; P=0.026); pannus (OR, 1.5; P=0.054), pannus with tears (OR, 1.73; P=0.037), and tendency for lower risk of: calcifications (OR, 0.63; P=0.087) or isolated calcification (OR, 0.67; P=0.17). A-antigen was associated with lower risk of perforations (OR 0.56; P=0.087). B-group patients had an increased risk of: perforations (OR, 1.73; P=0.043); having a pannus that was calcified (OR, 3.0, P=0.025). B-antigen was associated with a propensity for calcifications in general (OR, 1.34; P=0.25). Conclusions Patient's ABO blood group is associated with specific SVD types. We hypothesize that carbohydrate antigens, which may or may not be common to patient and animal bioprosthetic tissue, will determine a patient's specific immunoreactivity with respect to xenograft tissue and thus bioprosthesis outcome in terms of SVD.
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Affiliation(s)
- Olivier Schussler
- Deparments of Cardiovascular Surgery and Cardiovascular Research Laboratory Geneva University Hospitals and Faculty of Medicine Geneva Switzerland.,Service de Chirurgie Thoracique Hôpitaux Universitaire de StrasbourgParis University Paris France
| | - Nermine Lila
- Biosurgical Research Lab (Carpentier Foundation) APHPGeorges PompidouEuropean Georges Pompidou Hospital Paris France
| | - Juan Grau
- Department of Epidemiology Ottawa Heart InstituteUniversity of Ottawa Ontario Canada
| | - Marc Ruel
- Department of Epidemiology Ottawa Heart InstituteUniversity of Ottawa Ontario Canada
| | - Yves Lecarpentier
- Centre de Recherche Clinique Grand Hôpital de l'Est Francilien (GHEF) Meaux France
| | - Alain Carpentier
- Biosurgical Research Lab (Carpentier Foundation) APHPGeorges PompidouEuropean Georges Pompidou Hospital Paris France.,Division of Cardiac Surgery and Research Laboratory European HospitalEuropean Georges Pompidou Hospital Paris France
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99
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Cennamo G, Montorio D, Morra VB, Criscuolo C, Lanzillo R, Salvatore E, Camerlingo C, Lisitskiy M, Delfino I, Portaccio M, Lepore M. Surface-enhanced Raman spectroscopy of tears: toward a diagnostic tool for neurodegenerative disease identification. J Biomed Opt 2020; 25:1-12. [PMID: 32767890 PMCID: PMC7406892 DOI: 10.1117/1.jbo.25.8.087002] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 07/23/2020] [Indexed: 05/31/2023]
Abstract
SIGNIFICANCE A noninvasive method based on surface-enhanced Raman spectroscopy (SERS) of tears was proposed as a support for diagnosing neurodegenerative pathologies, including different forms of dementia and Alzheimer's disease (AD). In this field, timely and reliable discrimination and diagnosis are critical aspects for choosing a valid medical therapy, and new methods are highly required. AIM The aim is to evince spectral differences in SERS response of human tears from AD affected, mild cognitive impaired (MCI), and healthy control (Ctr) subjects. APPROACH Human tears were characterized by SERS coupled with multivariate data analysis. Thirty-one informed subjects (Ctr, MCI, and AD) were considered. RESULTS Average SERS spectra from Ctr, MCI, and AD subjects evidenced differences related to lactoferrin and lysozyme protein components. Quantitative changes were also observed by determining the intensity ratio between selected bands. We also constructed a classification model that discriminated among AD, MCI, and Ctr subjects. The model was built using the scores obtained by performing principal component analysis on specific spectral regions (i-PCA). CONCLUSIONS The results are very encouraging with interesting perspectives for medical applications as support of clinical diagnosis and discrimination of AD from other forms of dementia.
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Affiliation(s)
- Gilda Cennamo
- Universitá “Federico II” di Napoli, Dipartimento di Sanitá Pubblica, Napoli, Italy
| | - Daniela Montorio
- Universitá “Federico II” di Napoli, Dipartimento di Neuroscienze e Sci. Riproduttive e Odontostomatologiche, Napoli, Italy
| | - Vincenzo Brescia Morra
- Universitá “Federico II” di Napoli, Dipartimento di Neuroscienze e Sci. Riproduttive e Odontostomatologiche, Napoli, Italy
| | - Chiara Criscuolo
- Universitá “Federico II” di Napoli, Dipartimento di Neuroscienze e Sci. Riproduttive e Odontostomatologiche, Napoli, Italy
| | - Roberta Lanzillo
- Universitá “Federico II” di Napoli, Dipartimento di Neuroscienze e Sci. Riproduttive e Odontostomatologiche, Napoli, Italy
| | - Elena Salvatore
- Universitá “Federico II” di Napoli, Dipartimento di Neuroscienze e Sci. Riproduttive e Odontostomatologiche, Napoli, Italy
| | - Carlo Camerlingo
- CNR-SPIN, Ist. Superconduttori, Materiali Innovativi e Dispositivi, Consiglio Nazionale delle Ricerche, Pozzuoli, Italy
| | - Mikhail Lisitskiy
- CNR-SPIN, Ist. Superconduttori, Materiali Innovativi e Dispositivi, Consiglio Nazionale delle Ricerche, Pozzuoli, Italy
| | - Ines Delfino
- Universitá della Tuscia, Dipartimento di Scienze Ecologiche e Biologiche, Viterbo, Italy
| | - Marianna Portaccio
- Universitá della Campania “L. Vanvitelli,” Dipartimento di Medicina Sperimentale, Napoli, Italy
| | - Maria Lepore
- Universitá della Campania “L. Vanvitelli,” Dipartimento di Medicina Sperimentale, Napoli, Italy
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100
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Neil J, Kessal K, Merabet L, Kobal A, Bouhadiba S, Poilane C, Riancho L, Bury T, Baudouin C, Brignole-Baudouin F. IgE Ratio in Tears: A Predictive Tool of Ocular Allergic Inflammation. Ocul Immunol Inflamm 2020; 28:775-785. [PMID: 31411517 DOI: 10.1080/09273948.2019.1629462] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
PURPOSE To demonstrate the tear IgE (measured/exuded) ratio (R) as a useful biological marker of ocular allergy in order to distinguish severe from less severe inflammatory status. METHODS Tear samples and sera from 78 ocular allergy patients and 19 control subjects were analyzed. Total IgE and albumin were measured for calculating the tear IgE-R defining two subgroups (SG) of samples: R ≥ 4-SG and R < 4-SG. Eosinophil cationic protein, Th1 and Th2 cytokines (IFN-γ, IL-4, -5, -6, -8 and -10) and protein electrophoretic profiles were also investigated in tears. RESULTS The R < 4-SG compared to the R ≥ 4-SG shows higher levels of tear albumin, eosinophil cationic protein, and Th1 and Th2 cytokines. Moreover, each subgroup presents a specific protein profile. CONCLUSION This study showed that an IgE-R lower than four must be carefully interpreted as a warning sign of a severe inflammatory context and should be also associated with an exploration of immunological profile.
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Affiliation(s)
- J Neil
- Medical Laboratory department, Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DGOS CIC 1423 , Paris, France
| | - K Kessal
- Department of Ophthalmology III, Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DHOS CIC 1423 , Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision , Paris, France
| | - L Merabet
- Medical Laboratory department, Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DGOS CIC 1423 , Paris, France
| | - A Kobal
- Medical Laboratory department, Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DGOS CIC 1423 , Paris, France
| | - S Bouhadiba
- Medical Laboratory department, Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DGOS CIC 1423 , Paris, France
| | - C Poilane
- Medical Laboratory department, Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DGOS CIC 1423 , Paris, France
| | - L Riancho
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision , Paris, France
| | - T Bury
- Department of Ophthalmology III, Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DHOS CIC 1423 , Paris, France
| | - C Baudouin
- Department of Ophthalmology III, Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DHOS CIC 1423 , Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision , Paris, France.,Department of Ophthalmology, Ambrroise paré Hospital, APHP, Boulogne-Billancourt, University of Versailles Saint-Quentin en Yvelines , Versailles, France
| | - F Brignole-Baudouin
- Medical Laboratory department, Quinze-Vingts National Ophthalmology Hospital, DHU Sight Restore, INSERM-DGOS CIC 1423 , Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision , Paris, France.,Faculté de Pharmacie de Paris, Université de Paris, Paris, France
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