Sayer Ji
Founder of GreenMedInfo.com

Subscribe to our informative Newsletter & get two FREE E-Books

Our newsletter serves 500,000 with essential news, research & healthy tips, daily.

Depression: 21st Century Solutions + The Dark Side of Wheat

Abstract Title:

Relation of cholesterol-stimulated Staphylococcus aureus growth to chronic blepharitis.

Abstract Source:

Invest Ophthalmol Vis Sci. 1993 Jun;34(7):2291-6. PMID: 8505210

Abstract Author(s):

W E Shine, R Silvany, J P McCulley

Article Affiliation:

Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas.

Abstract:

PURPOSE: Many types of chronic blepharitis have been believed to be primarily microbial in origin; however, it was proposed that differences and changes in lipid composition of meibomian secretion may be the initiating factor in some of these. It was recently reported that there are two subgroups of normals, those whose meibomian secretions contain high levels of cholesterol esters and those whose secretions contain very low levels of these esters. Thus, these subgroups of normals were defined on the basis of detailed lipid analyses of meibomian secretions from individuals showing no clinical signs of chronic blepharitis. All secretions from patients in the various disease groups contain high levels of these esters. Based on previous observations that in some chronic blepharitis disease groups certain Staphylococcus species were capable of hydrolyzing cholesterol esters, the authors tested the hypothesis that the resulting cholesterol might affect growth of Staphylococcus aureus. METHODS: Staphylococcus aureus growth stimulation in Mueller-Hinton broth by cholesterol was determined by colony forming units. Growth stimulation by cholesterol and other additives was also determined by the optical density 650 nm method. Statistical analyses included analysis of variance and the Student's t test. RESULTS: Cholesterol stimulated Staphylococcus aureus growth was significant during the first 24 hr period (20% increase at 25 microM cholesterol, P<0.02), and for the total 48 hr period (40% increase at 400 microM cholesterol, P<0.005) when compared to the respective control. Growth stimulation, determined by OD at 650 nm, in the presence of cholesterol was significantly greater (P<0.02) than that in the presence of either sitosterol or cholestanol when the sterol concentration was 190 microM. CONCLUSION: These results suggest that the presence and hydrolysis of cholesterol esters of meibomian secretions may contribute to the proliferation of Staphylococcus spp, especially Staphylococcus aureus, observed in some chronic blepharitis disease groups.

Study Type : Human Study

Print Options


Key Research Topics

Sayer Ji
Founder of GreenMedInfo.com

Subscribe to our informative Newsletter & get two FREE E-Books

Our newsletter serves 500,000 with essential news, research & healthy tips, daily.

Depression: 21st Century Solutions + The Dark Side of Wheat

This website is for information purposes only. By providing the information contained herein we are not diagnosing, treating, curing, mitigating, or preventing any type of disease or medical condition. Before beginning any type of natural, integrative or conventional treatment regimen, it is advisable to seek the advice of a licensed healthcare professional.

© Copyright 2008-2019 GreenMedInfo.com, Journal Articles copyright of original owners, MeSH copyright NLM.