keyword
MENU ▼
Read by QxMD icon Read
search

Pterygia

keyword
https://www.readbyqxmd.com/read/29317263/keratinocyte-specific-ablation-of-ripk4-allows-epidermal-cornification-but-impairs-skin-barrier-formation
#1
Corinne Urwyler-Rösselet, Giel Tanghe, Kirsten Leurs, Barbara Gilbert, Riet De Rycke, Michiel De Bruyne, Saskia Lippens, Sonja Bartunkova, Philippe De Groote, Carine Niessen, Marek Haftek, Peter Vandenabeele, Wim Declercq
In humans, RIPK4 mutations can lead to the autosomal recessive Bartsocas-Papas and popliteal pterygium syndromes, which are characterized by severe skin defects, pterygia as well as clefting. We show here that the epithelial fusions observed in RIPK4 full KO mice are E-cadherin dependent, as keratinocyte-specific deletion of E-cadherin in RIPK4 full KO mice rescued the tail-to-body fusion and fusion of oral epithelia. To elucidate RIPK4 function in epidermal differentiation and development we generated epidermis-specific RIPK4 knockout mice (RIPK4EKO)...
January 6, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29285278/relationship-between-expression-of-cyclooxygenase-2-and-neovascularization-in-human-pterygia
#2
Dongwei Liu, Chang Peng, Zhengxuan Jiang, Liming Tao
In present study, we are to test the relationship between cyclooxygenase 2 (COX-2) and angiogenesis in pterygium tissues from a group of Chinese patients. Here forty-five primary pterygium tissues and twenty-three normal bulbar conjunctival tissues were obtained during ophthalmologic surgeries. The primary pterygium samples were treated for the immunohistochemical evaluation of COX-2, CD31 and vascular endothelial growth factor (VEGF) antibodies for different tissues. In order to evaluate the relationship between COX-2 and neovascularization, a statistical analysis was performed using the SPSS 13...
December 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/29274205/arthrogryposis-and-pterygia-as-lethal-end-manifestations-of-genetically-defined-congenital-myopathies
#3
Atif A Ahmed, Priya Skaria, Nicole P Safina, Isabelle Thiffault, Alex Kats, Eugenio Taboada, Sultan Habeebu, Carol Saunders
Arthrogryposis multiplex congenita affects approximately 1 in 3,000 individuals of different ethnic backgrounds and displays an equal incidence in males and females. The underlying mechanism for congenital contracture of the joints is decreased fetal movement during intrauterine development. This disorder is associated with over 400 medical conditions and 350 known genes that display considerable variability in phenotypic expression. In this report, four fetal or perinatal autopsy cases of arthrogryposis were studied by gross morphology, microscopic histopathologic examination, and whole genome sequencing of postmortem DNA...
December 23, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29178448/expanding-the-clinical-spectrum-of-phenotypes-caused-by-pathogenic-variants-in-plod2
#4
Gabriela Ferraz Leal, Gen Nishimura, Ulrika Voss, Débora Romeo Bertola, Eva Åström, Johan Svensson, Guilherme Lopes Yamamoto, Anna Hammarsjö, Eva Horemuzova, Nikos Papadiogannakis, Erik Iwarsson, Giedre Grigelioniene, Emma Tham
Osteogenesis imperfecta (OI) is a strikingly heterogeneous group of disorders with a broad range of phenotypic variations. It is also one of the differential diagnoses in bent bone dysplasias along with campomelic dysplasia and thanatophoric dysplasia and can usually be distinguished by decreased bone mineralization and bone fractures. Bent bone dyplasias also include syndromes such as kyphomelic dysplasia [MIM:211350] and mesomelic dysplasia Kozlowski-Reardon [MIM249710], both of which have been under debate regarding whether or not they are a real entity or simply a phenotypic manifestation of another dysplasia including OI...
November 27, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29164949/local-pro-inflammatory-cytokine-and-nitric-oxide-responses-are-elevated-in-patients-with-pterygium
#5
S Zidi, F Bediar-Boulaneb, H Belguendouz, M Belkhelfa, O Medjeber, O Laouar, C Henchiri, C Touil-Boukoffa
Pterygium is a common ocular surface disease observed in humans. Chronic ultraviolet (UV) exposure is extensively recognized as an aetiological factor in the pathogenesis of this disease. This hypothesis is sustained by epidemiological and histopathological data in relation to UV injured skin. Although some findings have indicated that genetic factors, anti-apoptotic and immunological mechanisms are involved in the pathogenesis of pterygium, the mechanism by which it develops remains poorly understood. In this study, we analysed the in vivo production of IL-17A, IL-6, IL-10 and nitric oxide (NO) in the tears and sera from Algerian patients...
November 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/29124395/non-invasive-detection-of-hpv-dna-in-exfoliative-samples-from-ophthalmic-pterygium-a-feasibility-study
#6
Αikaterini K Chalkia, Stavros Derdas, Georgios Bontzos, George Sourvinos, Εfstathios T Detorakis
PURPOSE: The evaluation of a non-invasive detection method for human papilloma virus (HPV) in ophthalmic pterygia. METHODS: Cotton swab samples and corresponding tissue specimens were collected from 21 ophthalmic pterygia of 21 patients. HPV detection and typing were performed by real-time PCR. Discrepancies in HPV detection between swab and tissue samples as well as clinical correlations of findings were examined. RESULTS: HPV DNA was detected in 9 (42...
November 9, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29080063/validity-of-a-new-comprehensive-pterygia-grading-scale-for-use-in-clinical-research-and-clinical-trial
#7
Ping Huang, Jianyan Huang, Tudor Tepelus, Jyotsna Maram, Srinivas Sadda, Olivia L Lee
PURPOSE: To determine the reliability and agreement of a new comprehensive pterygium grading scale for use in clinical research and clinical trials. METHODS: Thirty eyes with pterygia were enrolled in this study. Primary gaze position and lateral gaze position images were taken of each eye with a modified single-lens reflex camera system. Our grading scale includes five parameters: two hyperemia parameters of pterygia on two different gaze position images and three size parameters, quantifying length, width, and area of the cornea encroachment of pterygium, using ImageJ software...
October 27, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28969169/sutureless-glue-less-conjunctival-autograft-versus-conjunctival-autograft-with-sutures-for-primary-advanced-pterygia-an-interventional-pilot-study
#8
Tanie Natung, Avonuo Keditsu, Wakaru Shullai, Prasanta Kumar Goswami
INTRODUCTION: Conjunctival Autograft (CAG) in pterygium surgery can be attached by sutures or fibrin glue or autologous in situ blood coagulum. Recurrence rate and other parameters related to pterygium surgery between CAG with sutures and autologous in situ blood coagulum have not been compared uniformly in advanced pterygia alone. AIM: To compare and evaluate the outcome of sutureless, glue-less CAG with autologous in situ blood coagulum versus CAG with sutures for primary, advanced pterygium...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28938377/long-term-stability-of-keratometry-scheimpflug-derived-true-net-power-and-total-corneal-refractive-power-after-primary-pterygium-excision
#9
Ka Wai Kam, Timothy A Kuan, Michael W Belin, Alvin L Young
PURPOSE: To evaluate long-term changes in mean keratometry, astigmatism, true net power (TNP), and total corneal refractive power (TCRP) of corneas after primary pterygium excision. METHODS: This is a prospective observational series conducted at a tertiary teaching hospital eye center in Hong Kong. A total of 31 eyes of 31 patients with primary pterygium excision were included. Patients with recurrent or double-headed pterygia or a history of corneal scars from previous trauma, infection, or surgery were excluded...
September 21, 2017: Cornea
https://www.readbyqxmd.com/read/28922327/releasable-single-suture-for-primary-pterygium-excision-with-a-conjunctival-autograft
#10
Gautam Singh Parmar, Sachin Arya, Ashok Kumar Meena, Bhushan Ghodke, Elesh Jain, Budhendra Jain
PURPOSE: To evaluate the efficacy of a releasable single suture for pterygium excision with a conjunctival autograft (CAG). METHODS: Retrospective case series at a tertiary eye care center in central India was conducted. Medical records of 150 patients, who underwent primary pterygium excision with a CAG secured by a single releasable 10-0 nylon suture in the last year were reviewed. The surgical duration was noted. The suture was released on the first postoperative day under topical anesthesia...
November 2017: Cornea
https://www.readbyqxmd.com/read/28873177/hypoxia-inducible-factor-dependent-expression-of-angiopoietin-like-4-by-conjunctival-epithelial-cells-promotes-the-angiogenic-phenotype-of-pterygia
#11
Qianli Meng, Yaowu Qin, Monika Deshpande, Fabiana Kashiwabuchi, Murilo Rodrigues, Qiaozhi Lu, Hui Ren, Jennifer H Elisseeff, Gregg L Semenza, Silvia V Montaner, Akrit Sodhi
Purpose: Disappointing results from clinical studies assessing the efficacy of therapies targeting vascular endothelial growth factor (VEGF) for the treatment of pterygia suggest that other angiogenic mediators may also play a role in its development. We therefore explore the relative contribution of VEGF, hypoxia-inducible factor (HIF)-1α (the transcription factor that regulates VEGF expression in ocular neovascular disease), and a second HIF-regulated mediator, angiopoietin-like 4 (ANGPTL4), to the angiogenic phenotype of pterygia...
September 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28844049/pterygia-are-indicators-of-an-increased-risk-of-developing-cutaneous-melanomas
#12
Julie M Crewe, Tim Threlfall, Antony Clark, Paul G Sanfilippo, David A Mackey
AIM: To investigate whether pterygium is an indicator of an increased risk of cutaneous melanoma (CM). METHODS: A matched-cohort study, using linked health administrative data sets to identify all hospital-treated pterygium in Western Australia (WA) between 1979 and 2014. We identified pterygium cases from hospital diagnosis and/or procedure International Classification of Diseases 9th revision (ICD-9) and 10th revision (ICD-10) codes and matched cases by age, sex and residential postcode to WA Electoral Roll controls with no known history of pterygium...
August 26, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28820791/teleophthalmic-approach-for-detection-of-corneal-diseases-accuracy-and-reliability
#13
Maria A Woodward, David C Musch, Christopher T Hood, Jonathan B Greene, Leslie M Niziol, V Swetha E Jeganathan, Paul P Lee
PURPOSE: Corneal and anterior segment diseases cause most of the urgent visits to eye care professionals. We evaluated the diagnostic accuracy of detecting corneal diseases using external photographs from 2 portable cameras for telemedicine purposes. METHODS: This is a prospective study of adults with a clinical diagnosis of corneal pathology including corneal abrasions, ulcers, scars, and pterygia. A cornea specialist provided the gold standard diagnosis by slit-lamp examination...
October 2017: Cornea
https://www.readbyqxmd.com/read/28803935/tnf-%C3%AE-upregulates-hif-1%C3%AE-expression-in-pterygium-fibroblasts-and-enhances-their-susceptibility-to-vegf-independent-of-hypoxia
#14
Kyoung Woo Kim, Soo Jin Lee, Jae Chan Kim
The clinical manifestations of pterygium are characterized by rapid growth and postoperative recurrences. We had previously proposed that hypoxia-inducible factor (HIF)-1α recruits progenitor cells during the development and progression of pterygia. Recently, it was reported that various stimuli, including inflammation, could activate HIF-1α even under normoxic conditions. The ocular surface directly faces external environments, and is thus frequently exposed to inflammatory insults. First, we examined the gene expression of HIF-1α, its downstream molecule, vascular endothelial growth factor (VEGF)-A, and VEGF receptor (VEGFR)-2 in corneal and conjunctival cells compared with cultured human umbilical vein endothelial cells...
November 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28634544/efficacy-of-subconjunctival-bevacizumab-injections-before-and-after-surgical-excision-in-preventing-pterygium-recurrence
#15
Raffaele Nuzzi, Federico Tridico
PURPOSE: To evaluate the efficacy of subconjunctival bevacizumab injections, before and after surgical excision with bare sclera technique, in preventing postoperative pterygium recurrence. MATERIAL AND METHODS: 83 eyes of 83 patients affected with primary pterygia underwent surgical excision. 42 eyes received two subconjunctival bevacizumab injections, at the dosage of 2.5 mg/0.1 ml, one week prior surgery and one week after intervention. Recurrence rate was evaluated among the two groups...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28614154/regression-of-inflamed-pterygia-by-frequent-high-dose-intralesional-ziv-aflibercept
#16
Ahmad M Mansour
PURPOSE: Intralesional single low-dose vascular endothelial growth factor antagonists have traditionally failed in causing regression of pterygia. The current pilot study investigates the role of high-dose repeated intralesional ziv-aflibercept in causing regression of inflamed or recurring pterygia. METHODS: This prospective study from January 2015 to April 2017 consisted of using high dose of ziv-aflibercept between 0.1 mL (2.5 mg) and 0.3 mL (7.5 mg), depending on the pterygium size and the degree of inflammation...
June 13, 2017: Cornea
https://www.readbyqxmd.com/read/28489720/expression-of-peroxiredoxin-2-and-vascular-endothelial-growth-factor-receptor-2-in-pterygium
#17
Yuchuan Wang, Jinyong Lin, Luxia Chen, Liming Wang, Peng Hao, Ruifang Han, Ming Ying, Xuan Li
PURPOSE: The expression of peroxiredoxin 2 and vascular endothelial growth factor receptor 2 (VEGFR2) was detected in pterygium to investigate whether they are involved in the pathogenesis or recurrence of pterygium and to evaluate the association between peroxiredoxin 2 and VEGFR2 in pterygium. METHODS: Ten normal bulbar conjunctivae, 35 primary pterygia, and 35 recurrent pterygia were obtained. Formalin-fixed, paraffin-wax-embedded tissues were analyzed by immunohistochemistry with peroxiredoxin 2 and VEGFR2 antibodies...
July 2017: Cornea
https://www.readbyqxmd.com/read/28410726/surgical-techniques-and-adjuvants-for-the-management-of-primary-and-recurrent-pterygia
#18
REVIEW
John A Hovanesian, Christopher E Starr, David T Vroman, Francis S Mah, Jose A P Gomes, Marjan Farid, Neda Shamie, Richard S Davidson, Thomas John, Edward J Holland, Terry Kim
The removal and rate of recurrence of pterygium have been discussed for years. The disorder is highly associated with environmental factors, and recurrence rates can be unacceptably high and cannot be successfully predicted. New techniques and graft preparations and postoperative management strategies are helping to reduce the recurrence rates and provide an ocular surface that is near ideal for future cataract or refractive surgery. This review discusses the advantages and disadvantages of various treatment strategies...
March 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28410547/endocan-overexpression-in-pterygium
#19
Raşit Kiliç, Ali Kurt, Murat Tad, Sedat Taşdemir
PURPOSE: The aim of this study was to evaluate the possible role of endocan in the pathogenesis of pterygium. METHODS: The study was conducted on 33 patients with primary pterygium and 20 control subjects with normal bulbar conjunctiva. Patients with pterygium were graded into 3 groups as atrophic, fleshy, and intermediate, according to the Tan classification. Primary nasal pterygia and normal bulbar conjunctivas were surgically removed. Endocan expression was immunohistochemically investigated...
June 2017: Cornea
https://www.readbyqxmd.com/read/28368995/proposal-for-a-novel-severity-grading-system-for-pterygia-based-on-corneal-topographic-data
#20
Kazunori Miyata, Keiichiro Minami, Atsushi Otani, Tadatoshi Tokunaga, Shouta Tokuda, Shiro Amano
PURPOSE: To propose a grading system of pterygium severity based on corneal higher-order irregularity (HOI) and to evaluate postoperative changes in corneal irregularity of the graded pterygia. METHODS: In 268 eyes of 226 patients undergoing excision surgery of primary nasal pterygium, Placido corneal topography images were taken before and until 6 months after surgery. The best-corrected visual acuity (BCVA) and pterygium size with respect to the corneal diameter were also measured...
July 2017: Cornea
keyword
keyword
25212
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"