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Fungal keratitis

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https://www.readbyqxmd.com/read/29781928/interface-fungal-keratitis-after-descemet-stripping-automated-endothelial-keratoplasty-a-review-of-the-literature-with-a-focus-on-outcomes
#1
Elizabeth McElnea, Billy Power, Conor Murphy
PURPOSE: To examine the management and associated outcomes of reported cases of interface fungal infection after Descemet stripping automated endothelial keratoplasty (EK). METHODS: A literature review identified reports of interface fungal infection after Descemet stripping automated EK. Data retrieved from the same included patient demographics, surgical procedure undertaken, donor rim culture result, clinical course, and outcome. A review of the relevant literature was also conducted...
May 16, 2018: Cornea
https://www.readbyqxmd.com/read/29779647/in-vitro-susceptibility-and-multilocus-sequence-typing-of-fusarium-isolates-causing-keratitis
#2
P Dallé da Rosa, A Nunes, R Borges, B Batista, A Meneghello Fuentefria, L Z Goldani
Fungal keratitis is recognized as a significant cause of ocular morbidity and blindness especially in developing countries. In this study, we aimed to present the molecular identification and susceptibility of Fusarium isolates causing fungal keratitis in a university hospital in southern Brazil. The samples were identified using the second largest subunit of the RNA polymerase gene (RPB2) and the translation elongation factor 1-alpha (TEF1), while the antifungal susceptibility was tested by the broth microdilution method according to the Clinical and Laboratory Standards Institute (CLSI) methodology...
May 17, 2018: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/29758184/therapeutic-penetrating-keratoplasty-button-cultures-in-the-mycotic-ulcer-treatment-trial-ii-a-randomized-trial-comparing-oral-voriconazole-vs-placebo
#3
Julie Cho, N Venkatesh Prajna, Prajna Lalitha, Revathi Rajaraman, Tiruvengada Krishnan, Yijie Brittany Lin, Kathryn J Ray, Thomas M Lietman, Jennifer Rose-Nussbaumer
OBJECTIVE: To compare oral voriconazole versus placebo in addition to topical antifungals in the treatment of filamentous fungal keratitis. DESIGN: Non-prespecified, secondary case-control analysis from a multicenter, double-masked, randomized placebo-controlled clinical trial STUDY PARTICIPANTS: Patients with smear-positive filamentous fungal ulcers and visual acuity of 20/400 or worse who eventuated to therapeutic penetrating keratoplasty (TPK). INTERVENTION: Study participants were randomized to oral voriconazole versus oral placebo; all received topical antifungal drops...
May 11, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29757853/multiplex-polymerase-chain-reaction-assay-for-screening-of-mycotoxin-genes-from-ocular-isolates-of-fusarium-species
#4
Orapin Anutarapongpan, Jorge Maestre-Mesa, Eduardo C Alfonso, Terrence P OʼBrien, Darlene Miller
PURPOSE: To identify mycotoxin genes among clinical ocular isolates of Fusarium species and to correlate these with clinical outcomes of Fusarium keratitis. METHODS: Fifty-four clinical isolates of Fusarium were retrieved from the Bascom Palmer Eye Institute Ocular Microbiology Laboratory data bank. Multiplex polymerase chain reactions were run to confirm the identification of Fusarium species [internal transcribed spacer sequence, translation elongation factor 1-α (TEF) and β-tubulin] and to detect the presence of genes encoding production of fumonisin B mycotoxins (FUM1 and FUM8) and trichothecene mycotoxins (deoxynivalenol and nivalenol)...
May 1, 2018: Cornea
https://www.readbyqxmd.com/read/29742560/two-cases-of-chronic-candidiasis-in-keratitis-ichthyosis-deafness-syndrome
#5
Diana Bartenstein, Hye Jin Chung, Sadaf Hussain
Keratitis-ichthyosis-deafness (KID) syndrome is a rare genodermatosis that typically results from mutations of the GJB2 gene or, less commonly, the GJB6 gene. Patients with KID syndrome are at higher risk of malignancy and infections. Here, we present 2 patients with KID syndrome who developed verrucous plaques. Given that patients with KID syndrome are at high risk of developing squamous cell carcinoma, biopsies were performed. Both cases revealed histologic findings of marked papillomatous epidermal hyperplasia with numerous fungal spores and pseudohyphae in the stratum corneum...
May 3, 2018: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/29739628/collagen-cross-linked-therapeutic-grafts-in-fungal-keratitis
#6
Jeewan S Titiyal, Anjana Karunakaran, Manpreet Kaur, Anubha Rathi, Tushar Agarwal, Namrata Sharma
No abstract text is available yet for this article.
May 5, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29735846/fungal-keratitis-caused-by-laetisaria-arvalis
#7
Lakshey Dudeja, Lakshmipriya Jeganathan, N Venkatesh Prajna, Lalitha Prajna
A 53-year-old female presented with keratitis (right eye) after fall of insect 10 days back. The ulcer worsened in spite of aggressive treatment with topical natamycin (5%) and amphotericin-B (0.15%) eye drops and finally perforated. Iris tissue sealed the perforation site, and ulcer healed with formation of adherent leucoma. This case represents first reported case of keratitis caused by Laetisaria arvalis and stresses on aggressive course of keratitis caused by this fungus. Importance of DNA sequencing in identification of unidentified fungal species is also highlighted...
January 2018: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29730068/biofilm-testing-of-microbiota-an-essential-step-during-corneal-scrap-examination-in-egyptian-acanthamoebic-keratitis-cases
#8
Marwa A Hasby Saad, Haidy S M Khalil
PURPOSE: To detect co-infections in the culture-proven acanthamoebic keratitis (AK) cases, and to test the capability of biofilm formation in the isolated microbiota. The clinical findings, habit of wearing contact lens and in-vitro antibiotic resistance were analyzed further according to the biofilm formation capability. METHODS: After clinical examination, corneal scraps and swabs were taken from 240 clinically suspected AK cases, for Acanthamoeba and microbiological cultures...
May 3, 2018: Parasitology International
https://www.readbyqxmd.com/read/29715322/clinical-analysis-of-fungal-keratitis-in-patients-with-and-without-diabetes
#9
Jing Dan, Qingjun Zhou, Hualei Zhai, Jun Cheng, Lei Wan, Cheng Ge, Lixin Xie
We compared the clinical characteristics, treatments, and prognoses of fungal keratitis in patients with and without diabetes. Patients diagnosed with fungal keratitis at Shandong Eye Institute between January 2010 and December 2016 were retrospectively reviewed and classified as diabetic and nondiabetic groups. One-hundred-and-eleven patients (111 eyes) with diabetes and 740 patients (740 eyes) without diabetes were included. The diabetic patients showed significantly older (p< 0.05) and lower male:female ratio (p<0...
2018: PloS One
https://www.readbyqxmd.com/read/29705891/keratomycosis-due-to-tintelnotia-destructans-refractory-to-common-therapy-treated-successfully-with-systemic-and-local-terbinafine-in-combination-with-polyhexamethylene-biguanide
#10
Wolfgang J Behrens-Baumann, Wolfram Hofmüller, Ina Tammer, Kathrin Tintelnot
PURPOSE: To report on a wearer of rigid gas-permeable contact lenses with a keratomycosis due to Tintelnotia-a new genus of Phaeosphaeriaceae-treated with terbinafine and polyhexamethylene biguanide. METHODS: Chart review of a patient with fungal keratitis treated additionally with systemic and topical terbinafine 0.25% after symptoms increased under conventional antimycotic therapy with voriconazole. Antifungal susceptibility had been tested in vitro. RESULTS: After starting an additional treatment with systemic and topical terbinafine, the severe corneal infection was sufficiently resolved...
April 28, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29698725/formulation-development-optimization-and-in-vitro-in-vivo-characterization-of-natamycin-loaded-pegylated-nano-lipid-carriers-for-ocular-applications
#11
Akash Patil, Prit Lakhani, Pranjal Taskar, Kai-Wei Wu, Corinne Sweeney, Bharathi Avula, Yan-Hong Wang, Ikhlas A Khan, Soumyajit Majumdar
Current study aimed at formulating and optimizing natamycin (NT) loaded PEGylated NLCs (NT-PEG-NLCs) using Box-Behnken Design and investigating their potential in ocular applications. Response surface methodology (RSM) computations and plots for optimization were performed using Design Expert® software, to obtain optimum values for response variables based on the criteria of desirability. Optimized NT-PEG-NLCs had predicted values for the dependent variables not significantly different from the experimental values...
April 23, 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29681463/-fungal-keratitis-a-5-year-monocentric-retrospective-study-on-reunion-island
#12
G Hoarau, M Albrieux, T Martin-Phipps, K Zitte-Zehler, L Borry, J Peytral, D Garcia-Hermoso, S Picot
OBJECTIVES: Fungal keratitis is rare in France, but could be a severe sight-threatening condition. Here, we aimed to describe the epidemiology of fungal keratitis in Réunion Island. METHODS: In a retrospective study, we analyzed 13 culture-proven keratitis episodes, occurred between January 2013 and July 2017 in the ophthalmology ward of a University Hospital, Saint-Pierre. Twelve isolates were genotyped and antifungal susceptibility testing was performed. RESULTS: Corneal abrasion caused by vegetable matter was the main predisposing factor...
April 19, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29675368/mincle-in-the-innate-immune-response-of-mice-fungal-keratitis
#13
Guo-Rong Yu, Jing Lin, Jie Zhang, Cheng-Ye Che, Xu-Dong Peng, Cui Li, Li-Ting Hu, Guo-Qiang Zhu, Kun He, Gui-Qiu Zhao
AIM: To investigate how macrophage inducible C-type lectin (Mincle) influences inflammation in mice fungal keratitis induced by Aspergillus fumigatus ( A. fumigatus ). METHODS: C57BL/6 mice were infected with A. fumigatus after pretreated with Mincle agonist TDB or Mincle neutralizing antibody (MincleAb), taking DMSO or IgG as control group respectively. The cornea lesions were monitored with slit-lamp microscope and evaluated by clinical score. Mincle expression was assessed using reverse transcription-ploymerase chain reaction (RT-PCR) and immunostaining...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29673332/expression-of-cytokines-in-aqueous-humor-from-fungal-keratitis-patients
#14
Yingnan Zhang, Qingfeng Liang, Yang Liu, Zhiqiang Pan, Christophe Baudouin, Antoine Labbé, Qingxian Lu
BACKGROUND: Although a series of reports on corneal fungal infection have been published, studies on pathogenic mechanisms and inflammation-associated cytokines remain limited. In this study, aqueous humor samples from fungal keratitis patients were collected to examine cytokine patterns and cellular profile for the pathogenesis of fungal keratitis. METHODS: The aqueous humor samples were collected from ten patients with advanced stage fungal keratitis. Eight aqueous humor samples from patients with keratoconus or corneal dystrophy were taken as control...
April 19, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29670766/corneal-debridement-combined-with-intrastromal-voriconazole-for-recalcitrant-fungal-keratitis
#15
Yajie Sun, Zhuo Sun, Yukai Chen, Guohua Deng
Background: To analyze the therapeutic effects of corneal debridement combined with intrastromal voriconazole in recalcitrant fungal keratitis. Methods: This is a retrospective study. Fourteen patients with recalcitrant fungal keratitis were treated by corneal debridement combined with intrastromal voriconazole (50  μ g/0.1 ml). This paper reviews and analyzes the patients' basic state, surgical intervention, medicinal treatment, and outcomes. Results: The mean sizes of infiltration and ulcer were (5...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29658325/fabrication-of-a-drug-delivery-system-that-enhances-antifungal-drug-corneal-penetration
#16
Jingguo Li, Zhanrong Li, Zhen Liang, Lei Han, Huayang Feng, Siyu He, Junjie Zhang
Fungal keratitis (FK) remains a severe eye disease, and effective therapies are limited by drug shortages and critical ocular barriers. Despite the high antifungal potency and broad spectrum of econazole, its strong irritant and insolubility in water hinder its ocular application. We designed and fabricated a new drug delivery system based on a polymeric vector for the ocular antifungal application of econazole. This novel system integrates the advantages of its constituent units and exhibits superior comprehensive performance...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29657977/expert-practice-patterns-and-opinions-on-corneal-cross-linking-for-infectious-keratitis
#17
Yen C Hsia, Caitlin A Moe, Thomas M Lietman, Jeremy D Keenan, Jennifer Rose-Nussbaumer
Objective: To assess the current opinion and practice patterns from cornea experts regarding the benefit of corneal cross-linking (CXL) for infectious keratitis (IK). Methods and analysis: An international survey was distributed to corneal specialists via an internet survey. The survey data collected were analysed with descriptive statistics. Results: A survey was sent to 190 recipients, and 29 (15%) respondents completed the survey with an average of 7 years' experience using CXL...
2018: BMJ Open Ophthalmology
https://www.readbyqxmd.com/read/29625485/atovaquone-impairs-growth-of-aspergillus-and-fusarium-keratitis-isolates-by-modulating-mitochondrial-function-and-zinc-homeostasis
#18
Heather L Clark, Martin S Minns, Yan Sun, Tristan de Jesus, Mahmoud G Ghannoum, Eric Pearlman
Purpose: Aspergillus and Fusarium molds cause blinding corneal infections as a consequence of ocular trauma and in association with contact lens wear. As these fungi require zinc for fungal growth, we examined the effect of atovaquone, a ubiquinone analog that disrupts zinc homeostasis, on fungal growth in vitro and in vivo. Methods: In vitro: Aspergillus and Fusarium germinating conidia were incubated overnight with atovaquone, and hyphal growth was measured by fluorimetry...
March 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29580152/epidemiology-risk-factors-and-clinical-outcomes-in-severe-microbial-keratitis-in-south-india
#19
Jaya Devi Chidambaram, Namperumalsamy Venkatesh Prajna, Palepu Srikanthi, Shruti Lanjewar, Manisha Shah, Shanmugam Elakkiya, Prajna Lalitha, Matthew J Burton
PURPOSE: Here, we report risk factors associated with outcome in severe bacterial keratitis (BK), fungal keratitis (FK), and Acanthamoeba keratitis (AK) in India. METHODS: Prospective observational cohort study conducted in Aravind Eye Hospital, India. Adults presenting with severe microbial keratitis (MK) were enrolled (size ≥3 mm) and followed to 21 days post-enrolment. Ulcer clinical features were recorded at presentation. Outcomes by final visit were classified as good (completely healed or reduced infiltrate size) or poor (enlarged infiltrate size, perforated, or surgery performed)...
March 26, 2018: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29564417/fungal-keratitis-caused-by-rare-organisms
#20
Seyed Ali Tabatabaei, Mehdi Tabatabaei, Mohammad Soleimani, Zahra Fallah Tafti
Purpose: To report two rare cases of filamentous fungal keratitis. Methods: Two non-consecutive patients presented with suspicious fungal keratitis. After performing the smear and culture, medical therapy was started for them. They underwent slit photography and in vivo confocal microscopy (IVCM) in their follow-up visits. Results: The patients were 33-year-old and 56-year-old farmer men. They both mentioned a history of ocular trauma by plants...
March 2018: Journal of Current Ophthalmology
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