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Clinical keratitis

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https://www.readbyqxmd.com/read/28226245/subconjunctival-injectable-dendrimer-dexamethasone-gel-for-the-treatment-of-corneal-inflammation
#1
Uri Soiberman, Siva P Kambhampati, Tony Wu, Manoj K Mishra, Yumin Oh, Rishi Sharma, Jiangxia Wang, Abdul Elah Al Towerki, Samuel Yiu, Walter J Stark, Rangaramanujam M Kannan
Corneal inflammation is often encountered as a key pathological event in many corneal diseases. Current treatments involve topical corticosteroids which require frequent instillations due to rapid tear turnover, causing side-effects such as corneal toxicity and elevated intraocular pressure (IOP). Hence, new interventions that can reduce side effects, dosing frequency, and increase patient compliance can be highly beneficial. In this study, we explore a subconjunctival injectable gel based on G4-PAMAM dendrimer and hyaluronic acid, cross-linked using thiol-ene click chemistry, incorporated with dendrimer dexamethasone (D-Dex) conjugates as a potential strategy for sustained delivery and enhanced bioavailability of corticosteroids...
February 16, 2017: Biomaterials
https://www.readbyqxmd.com/read/28212157/current-approaches-to-myopia-control
#2
Seo Wei Leo
PURPOSE OF REVIEW: Myopia is a global problem, being particularly prevalent in the urban areas of east and southeast Asia. In addition to the direct economic and social burdens, associated ocular complications may lead to substantial vision loss. With prevalence of myopia above 80% and high myopia over 20%, it is crucial to control myopia. The aim of this review to is provide an update on the interventions to slow the onset of myopia and retard its progression. RECENT FINDINGS: The epidemic of myopia is characterized by increasingly early onset, combined with high myopia progression rates...
February 15, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28208900/fuchs-heterochromic-iridocylitis-clinical-characteristics-and-outcome-of-cataract-extraction-with-intra-ocular-lens-implantation-in-a-kashmiri-population-a-hospital-based-study
#3
Wasim Rashid, Imtiyaz Lone, Adil Majid Mir, Aamir Rashid, Mehreen Latif
INTRODUCTION: Fuchs Heterochromic Iridocylitis (FHI) is a rare form of uveitis which is frequently complicated by cataract and glaucoma, but it does not show typical features of uveitis like pain, redness and posterior synechia. AIM: To study the clinical characteristics and outcome of cataract extraction with Intra Ocular Lens (IOL) implantation in patients with FHI. MATERIALS AND METHODS: The present prospective study was carried out in the Postgraduate Department of Ophthalmology, Sher-i-Kashmir Institute of Medical Sciences (SKIMS), Bemina from March 2012 to January 2015...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28187442/the-association-between-nuclear-receptors-and-ocular-diseases
#4
REVIEW
Ke Liu, Chang Zou, Bo Qin
Nuclear hormone receptors (NRs) are one of the most abundant transcription factors in the human cells. They regulate expression of genes via interactions with corresponding ligands, co-activators, and co-repressors. These molecular pathways play important roles in the development, cell differentiation, and physiologic and metabolic processes. Increasingly, targeting nuclear receptors is becoming a promising strategy for new drug development. The aim of this review is to discuss the association between nuclear receptors and eye development, and expand their role in various ocular diseases such as keratitis, cataract, glaucoma, uveitis, retinopathy, and ophthalmic tumors...
February 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28176902/herpes-simplex-keratitis-challenges-in-diagnosis-and-clinical-management
#5
REVIEW
Tayaba N Azher, Xiao-Tang Yin, Deena Tajfirouz, Andrew Jw Huang, Patrick M Stuart
Herpes simplex virus is responsible for numerous ocular diseases, the most common of which is herpetic stromal keratitis. This is a recurrent infection of the cornea that typically begins with a subclinical infection of the cornea that establishes a latent infection of sensory ganglia, most often the trigeminal ganglia. Recurring infections occur when the virus is reactivated from latency and travels back to the cornea, where it restimulates an inflammatory response. This inflammatory response can lead to decreased corneal sensation, scarring, and blindness...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28151861/shifting-trends-in-microbial-keratitis-following-penetrating-keratoplasty-in-taiwan
#6
Hung-Chi Chen, Chia-Yi Lee, Hung-Yu Lin, David Hui-Kang Ma, Phil Yeong-Fong Chen, Ching-Hsi Hsiao, Hsin-Chiung Lin, Lung-Kun Yeh, Hsin-Yuan Tan
To investigate the clinical and microbiological profiles from microbial keratitis following penetrating keratoplasty (PKP) in a tertiary referral center in Taiwan, the medical records of 648 consecutive patients (648 eyes) undergoing PKP between January 2003 and December 2007 were retrospectively reviewed. Patients who subsequently sustained microbial keratitis were enrolled and analyzed for potential risk factors, clinical manifestations, microbiological profiles, complications, graft survival, and final visual outcome...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28151748/applications-of-antisense-oligonucleotides-for-the-treatment-of-inherited-retinal-diseases
#7
Rob W J Collin, Alejandro Garanto
PURPOSE OF REVIEW: Over the last years, antisense oligonucleotides (AONs) have gained attention as a therapeutic tool for the treatment of ocular diseases such as cytomegalovirus retinitis, keratitis-induced corneal neovascularization, and inherited retinal diseases (IRDs). In this review, we summarize the recent key findings, and describe the challenges and opportunities that lie ahead to translate AON-based therapies to the clinic, in particular for IRDs. RECENT FINDINGS: The efficacy of AONs to restore splice defects and cellular phenotypes associated with a common mutation in CEP290 was demonstrated in patient-derived optic cups and in a transgenic mouse model, respectively...
February 1, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28149778/epidemiological-clinical-and-laboratory-findings-of-infectious-keratitis-at-mansoura-ophthalmic-center-egypt
#8
Amani E Badawi, Dalia Moemen, Nora L El-Tantawy
AIM: To analyze the epidemiological, clinical and laboratory findings of infectious keratitis. METHODS: A retrospective study on cases of infective keratitis, attended our institution from Mar. 2013 to Feb. 2015, was done at Mansoura Ophthalmic Center, Egypt. Corneal scrapings were performed and processed for direct microscopy and culture in appropriate media using standard laboratory protocols. RESULTS: Out of 245 patients enrolled for study, 247 corneal scrapings were obtained...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28147401/necrotising-scleritis-and-peripheral-ulcerative-keratitis-associated-with-rheumatoid-arthritis-treated-with-rituximab
#9
S Hardy, K Hashemi, M Catanese, M Candil, P Zufferey, E Gabison, Y Guex-Crosier
Background Rheumatoid arthritis is a chronic and common inflammatory autoimmune disease. This primarily involves the synovia of the joints, but can cause many extra-articular manifestations as well, including peripheral ulcerative keratitis (PUK) and necrotising scleritis. These are often a threat to vision; they significantly compromise not only the eye's structural integrity but are also important for prognosis and need urgent management. History and signs Three cases of peripheral ulcerative keratitis associated with rheumatoid arthritis were recorded in the electronic databank of the Jules Gonin Uveitis Clinic, two with necrotising scleritis and peripheral ulcerative keratitis and one with only peripheral ulcerative keratitis...
February 1, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28146363/keratitis-in-dry-eye-disease-and-topical-ciclosporin-a
#10
Andrea Leonardi, Bruno Flamion, Christophe Baudouin
Tear film alterations in dry eye disease (DED) include reduced tear volume and an increase in inflammatory cytokines. Instability and reduced tear production initiate a vicious cycle where hyperosmolarity, ocular inflammation, and apoptosis may induce damage of the ocular surface including keratitis. Topical cyclosporine (CsA) has been used for the treatment of moderate-to-severe DED; however, previous studies failed to demonstrate its benefits by the European Agency standards. A new formulation of CsA 0.1% has been recently approved in the EU to treat severe keratitis in DED patients...
February 1, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28140621/effects-of-lactoferrin-on-the-viability-and-the-encystment-of-acanthamoeba-trophozoites
#11
Shinichi Tomita, Chie Suzuki, Hitomi Wada, Miya Nomachi, Masaki Imayasu, Kaoru Araki-Sasaki
Lactoferrin (LF) is an iron-binding basic glycoprotein that has an antimicrobial effect against certain microbes. The purpose of this study is to evaluate the amoebicidal effect of bovine milk LF (bLF) against Acanthamoeba clinical-isolate trophozoites, which cause severe keratitis. Most of the risk factor for Acanthamoeba keratitis is from wearing soft contact lenses (SCLs). Acanthamoeba trophozoites were incubated in bovine LF (bLF) solution, and the ratios of viability and encystment were determined with microscopic analysis of cyst formation...
February 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28139372/in%C3%A2-vitro-ocular-metabolism-and-bioactivation-of-ketoconazole-in-rat-rabbit-and-human
#12
Amanda L Cirello, Jennifer L Dumouchel, Mithat Gunduz, Christine E Dunne, Upendra A Argikar
Oral ketoconazole is clinically administered for treatment of severe cases for fungal keratitis. Pharmacodynamics and efficacy of oral and topical (ocular) ketoconazole have been explored in rabbit. However, metabolism of ketoconazole in the eye in any species is not well explored in any preclinical species or human. An understanding of ocular drug metabolism in the eye is crucial for ocular therapeutics to facilitate the risk assessment and development of potential drug candidates for the clinic. We aimed to investigate the metabolism of ketoconazole in rat, rabbit and human ocular S9 fractions...
November 19, 2016: Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28137823/topical-tacrolimus-solution-in-autoimmune-polyglandular-syndrome-1-associated-keratitis
#13
Samir S Shoughy, Khalid F Tabbara
PURPOSE: To evaluate the efficacy of topical tacrloimus eye drops in the treatment of keratitis associated with autoimmune polyglandular syndrome (APS)-1. METHODS: This is a retrospective review of 10 patients with APS-1. The patients were treated with topical tacrolimus 0.01% solution at The Eye Center, between 1 March 2012 and 30 April 2016. The outcome measures included improvement in visual acuity, photophobia and keratitis following treatment. Clinical assessment was carried out before, during and on the last visit following initiation of therapy...
January 30, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28131677/a-randomized-clinical-trial-to-evaluate-the-usefulness-of-amniotic-membrane-transplantation-in-bacterial-keratitis-healing
#14
Seyed Ali Tabatabaei, Mohammad Soleimani, Mahmoud Jabbarvand Behrouz, Ali Torkashvand, Pasha Anvari, Mehdi Yaseri
PURPOSE: To determine whether early amniotic membrane transplantation improves the outcomes among patients with bacterial keratitis. PATIENTS AND METHODS: In this prospective randomized clinical trial 49 eyes from 49 patients with bacterial keratitis received routine antibiotic therapy followed by double-layer amniotic membrane transplantation during 2-5 days after start up of the medications and the second group of 50 eyes from 50 patients only received routine antibacterial therapy...
January 25, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28129300/multimodal-assessment-of-corneal-thinning-using-optical-coherence-tomography-scheimpflug-imaging-pachymetry-and-slit-lamp-examination
#15
Julius T Oatts, Jeremy D Keenan, Tova Mannis, Tom M Lietman, Jennifer Rose-Nussbaumer
PURPOSE: To assess the relationship between corneal thinning measured by clinician-graded slit-lamp examination compared with ultrasound pachymetry (USP), anterior segment optical coherence tomography (AS-OCT), and the Pentacam. METHODS: Patients with corneal thinning underwent USP, AS-OCT, Pentacam measurements and standardized clinical grading by 2 cornea specialists estimating thinning on slit-lamp examination. Reproducibility of each testing modality was assessed using the intraclass correlation coefficient...
January 26, 2017: Cornea
https://www.readbyqxmd.com/read/28127443/the-unusual-association-of-inverse-retinitis-pigmentosa-and-fuchs-heterochromic-iridocyclitis
#16
Gian Franco Díez-Cattini, David Arturo Ancona-Lezama, Carlos Valdés-Lara, Virgilio Morales-Cantón
BACKGROUND: Classic retinitis pigmentosa (RP) and other syndromic variants have previously been associated to Fuchs' heterochromic iridocyclitis (FHI). Common immunogenic and inflammatory pathways have been proposed to explain the higher incidence of this uveitic phenomenon in patients with retinal dystrophies without definitive answers. Infrequent variants of RP such as inverse RP have not been previously reported in association with FHI. We believe that finding the way these entities connect can shed some light into their complex pathogenesis and help find ways to foresee and prevent the appearance of complications such as cataract and macular edema...
2017: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/28125988/inhibitory-effect-of-a-novel-peptide-h-rn-on-keratitis-induced-by-lps-or-poly-i-c-in-vitro-and-in-vivo-via-suppressing-nf-%C3%AE%C2%BAb-and-mapk-activation
#17
Shaopin Zhu, Xun Xu, Lili Wang, Li Su, Qing Gu, Fang Wei, Kun Liu
BACKGROUND: Keratitis is a common cause of blindness. Current anti-inflammatory drugs used in keratitis have profound side effects. Small peptides derived from endogenous proteins potentially display both desired efficiency and safety. We identified an 11-amino-acid peptide, H-RN, from hepatocyte growth factor (HGF), an endogenous protein with anti-inflammatory properties. We evaluated the effects of H-RN in keratitis in vitro and in vivo. METHODS: In vitro, corneal fibroblasts were stimulated with LPS or poly(I:C), surrogates for bacteria and viruses...
January 26, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28099282/risk-factors-for-acanthamoeba-keratitis-a-multistate-case-control-study-2008-2011
#18
Allison C Brown, Jonathan Ross, Daniel B Jones, Sarah A Collier, Tracy L Ayers, Robert M Hoekstra, Bryon Backensen, Sharon L Roy, Michael J Beach, Jonathan S Yoder
OBJECTIVE: To identify modifiable risk factors contributing to Acanthamoeba keratitis (AK) infection. METHODS: A case-control investigation was conducted. Case patients were soft contact lens wearers with laboratory-confirmed AK. Control were soft contact lens wearers ≥12 years of age, with no history of AK. Case patients were recruited from 14 ophthalmology referral centers and a clinical laboratory. Control were matched on state of residence and type of primary eye care provider (ophthalmologist or optometrist)...
January 17, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28087293/first-itraconazole-resistant-aspergillus-fumigatus-clinical-isolate-harbouring-a-g54e-substitution-in-cyp51ap-in-south-america
#19
Florencia Leonardelli, Laura Theill, María Elena Nardin, Daiana Macedo, Catiana Dudiuk, Emilce Mendez, Soledad Gamarra, Guillermo Garcia-Effron
BACKGROUND: A 27-year-old male rural worker was admitted with a fungal keratitis due to an injury involving plant detritus. MATERIALS AND METHODS: Specimens were collected for microscopy examination and culture. The isolate was identified by morphological and molecular criteria. Susceptibility testing was performed using CLSI methods. CYP51A gene was PCR amplified and sequenced. RESULTS: An Aspergillus fumigatus strain resistant to itraconazole (MIC>8μg/ml) was isolated...
January 10, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28080168/corneal-melt-after-boston-keratoprosthesis-clinical-presentation-management-outcomes-and-risk-factor-analysis
#20
Soumaya Bouhout, Marie-Claude Robert, Sousans Deli, Mona Harissi-Dagher
PURPOSE: To determine the presentation, risk factors, and outcomes of keratolysis after Boston type I keratoprosthesis (B-KPro). METHODS: Retrospective chart review. RESULTS: A total of 16 (14%) of the 110 eyes (96 patients) which underwent B-KPro implantation developed keratolysis at an average 20 ± 11 months. Retroprosthetic membrane (RPM), infectious keratitis, and corneal dellen were identified in 31%, 25%, and 13% of corneal melts, respectively...
January 12, 2017: Ocular Immunology and Inflammation
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