Purpose: To assess the endothelial toxicity and the microbiological efficacy of voriconazole (100 microg/mL) as an antimicrobial additive to Optisol GS.
Methods: A total of 533 donor rims were studied. One half of each donor rim was placed in standard Optisol GS and the other half rim in Optisol GS fortified with voriconazole (100 microg/mL). All rims were refrigerated for 24 hours at 3 degrees C and placed in thioglycolate broth and incubated at 37 degrees C for 7 days. A pair of donor buttons not used in transplantation was stored for 2 days in each solution and examined for endothelial changes with electron microscopy (EM). A second pair of cornea buttons was examined for toxicity by endothelial staining with 0.3% trypan blue and 0.2% alizarin red.
Results: Seven of 533 corneal rim cultures were positive for fungal organisms in the Optisol GS group. No rims were positive for fungal growth in the voriconazole-fortified Optisol GS medium. The difference was statistically significant (P = 0.015; Fisher exact test). There was no difference in the cellular morphology of the button stored in voriconazole fortified Optisol GS compared with Optisol GS using EM. In the bioassay, the percentage of nonviable cells in the voriconazole-fortified medium compared with the control medium was nonsignificant (P < 0.05, Student t test).
Conclusions: Voriconazole seems to be safe as a fortifying agent for cornea storage medium. It significantly reduces the rate of positive fungal rim cultures and shows no signs of endothelial cytotoxicity as viewed by EM and by a bioassay of trypan blue and alizarin red.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/ICO.0b013e31802d82e8 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Prevalence and Antimicrobial Susceptibility of Wound Pathogens in a Tertiary Care Hospital in Kashmir: A Cross-sectional Study.
Infect Chemother
December 2024
Department of Microbiology, Government Medical College, Srinagar, J&K, India.
Background: Wound infections significantly impact morbidity, mortality, and healthcare costs globally. The Kashmir Valley's unique geographical and climatic conditions, coupled with resource constraints and antibiotic misuse, complicate managing these infections effectively. This study aimed to identify predominant bacterial pathogens in wound infections at a tertiary care hospital in Kashmir, determine their antibiotic susceptibility profiles, and estimate the prevalence of multidrug-resistant (MDR) strains.
View Article and Find Full Text PDFRespiratory Outcomes and Aspergillus Serology Following Elexacaftor/Tezacaftor/Ivacaftor Therapy in People with Cystic Fibrosis and a History of Aspergillus fumigatus Infection.
Lung
January 2025
Mother and Child Department, Cystic Fibrosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
Purpose: The study evaluated the effects of elexacaftor/tezacaftor/ivacaftor (ETI) therapy in people with cystic fibrosis (pwCF) and a clinical history of Aspergillus fumigatus (AF) infection.
Methods: This prospective cohort study included pwCF who initiated ETI therapy and had received antifungal treatment in the preceding five years due to allergic bronchopulmonary aspergillosis (ABPA group) or other AF-related clinical manifestations (AF group). A control group of pwCF with no prior respiratory cultures positive for AF was also included.
The identification of a SARs-CoV2 S2 protein derived peptide with super-antigen-like stimulatory properties on T-cells.
Commun Biol
January 2025
Department of Medicine, Universite de Montreal, Montreal, QC, Canada.
Severe COVID-19 can trigger a cytokine storm, leading to acute respiratory distress syndrome (ARDS) with similarities to superantigen-induced toxic shock syndrome. An outstanding question is whether SARS-CoV-2 protein sequences can directly induce inflammatory responses. In this study, we identify a region in the SARS-CoV-2 S2 spike protein with sequence homology to bacterial super-antigens (termed P3).
View Article and Find Full Text PDFMethionine-driven methylation modification overcomes plasmid-mediated high-level tigecycline resistance.
Nat Commun
January 2025
Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.
Tigecycline is a last-resort antibiotic to treat complicated infections caused by multidrug-resistant pathogens, while the emergence of plasmid-mediated tet(X) family severely compromises its clinical efficacy. Novel antimicrobial strategies not limited to new antibiotics in pharmaceutical pipeline are urgently needed. Herein, we reveal the metabolic disparities between tet(X)-negative and -positive E.
View Article and Find Full Text PDFSupporting wild bee development with a bacterial symbiont.
J Appl Microbiol
January 2025
Department of Biology, York University, Toronto, Ontario, Canada M3J 1P3.
Aims: Wild bees foster diverse microbiota that may determine survival success of developing larvae. Here, we compare survivorship and microbial communities of Ceratina calcarata small carpenter bees reared from eggs across three treatments: maternally collected control provisions with diverse microbiota, sterile provisions, and probiotic provisions supplemented with a beneficial symbiont, Apilactobacillus kunkeei.
Methods And Results: Survival probability and adult masses differed across treatments, with the probiotic treatment resulting in highest survivorship and masses.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!