Results 41 to 50 of about 2,542 (193)

The Microbiome of the Meibum and Ocular Surface in Healthy Subjects

open access: yesInvestigative Opthalmology & Visual Science, 2020
The purpose of this study was to investigate the microbiome in the meibum, conjunctival sac, and eyelid skin in young and elderly healthy subjects, and analyze the effect that age, sex, and region have on microbiome composition.This study involved 36 healthy subjects (young-age subjects: 9 men/9 women, age range: 20-35 years; elderly age subjects: 9 ...
Suzuki, Tomo   +4 more
openaire   +2 more sources

Role of meibum and tear phospholipids in the evaporative water loss associated with dry eye. [PDF]

open access: yes, 2021
It is generally believed that the tear film lipid surface film inhibits the rate of evaporation (Revap) of the underlying tear aqueous. It is also generally believed that changes in the composition of the tear film lipid layer is responsible for an ...
Sledge, Samiyyah M
core   +1 more source

Comprehensive shotgun lipidomics of human meibomian gland secretions using MS/MSall with successive switching between acquisition polarity modes

open access: yesJournal of Lipid Research, 2018
The lipid composition of human meibomian gland secretions (meibum) has been analyzed using both targeted and untargeted mass spectrometric approaches, each of which has its advantages and disadvantages.
Jianzhong Chen, Kelly K. Nichols
doaj   +1 more source

On the Presence and Role of Polar Lipids in Meibum [PDF]

open access: yesInvestigative Opthalmology & Visual Science, 2010
I read with interest the paper by Chen et al.1 published online on July 29, 2010. The paper is concerned with shotgun (or direct-infusion) lipidomic analysis of normal human meibum by means of electrospray ionization mass spectrometry. I noticed with pleasure that Chen et al., along with providing new and important information on the meibomian lipidome,
openaire   +2 more sources

Lipidomic analysis of human tear fluid reveals structure-specific lipid alterations in dry eye syndrome1[S]

open access: yesJournal of Lipid Research, 2014
As current diagnostic markers for dry eye syndrome (DES) are lacking in both sensitivity and specificity, a pressing concern exists to develop activity markers that closely align with the principal axes of disease progression.
Sin Man Lam   +9 more
doaj   +1 more source

Lipid conformational order and the etiology of cataract and dry eye

open access: yesJournal of Lipid Research, 2021
Lens and tear film lipids are as unique as the systems they reside in. The major lipid of the human lens is dihydrosphingomylein, found in quantity only in the lens.
Douglas Borchman
doaj   +1 more source

Lipid polarity gradient formed by ω-hydroxy lipids in tear film prevents dry eye disease

open access: yeseLife, 2020
Meibum lipids form a lipid layer on the outermost side of the tear film and function to prevent water evaporation and reduce surface tension. (O-Acyl)-ω-hydroxy fatty acids (OAHFAs), a subclass of these lipids, are thought to be involved in connecting ...
Masatoshi Miyamoto   +3 more
doaj   +1 more source

Relationships between ocular surface sphingomyelinases, Meibum and Tear Sphingolipids, and clinical parameters of meibomian gland dysfunction

open access: yes, 2022
Sphingolipids (SPL) are a class of lipid molecules that play important functional and structural roles in our body and are a component of meibum. Sphingomyelinases (SMases) are key enzymes in sphingolipid metabolism that hydrolyze sphingomyelin (SM) and ...
Mondal, Koushik   +9 more
core   +1 more source

Changes in Meibum Lipid Composition With Ocular Demodex Infestation

open access: yesTranslational Vision Science & Technology, 2021
The purpose of this study was to understand the impact of Demodex infection in the lipid component of meibum in patients.The meibum samples were collected from four groups of subjects: (1) Demodex-negative with non-MGD (D-M-; n = 10); (2) Demodex-positive with non-MGD (D+M-; n = 10); (3) Demodex-negative with MGD (D-M+; n = 10); and (4) Demodex ...
Gao, Hui   +5 more
openaire   +2 more sources

Correction: The Combined Impact of Intense Pulsed Light Combined and 3% Diquafosol Ophthalmic Solution on Evaporative Dry Eye: A Randomized Control Study [PDF]

open access: yes, 2023
In the sentence beginning “Meibomian gland function and secretion quality:…” in this article, the values “…five meibomian glands in the middle parts of the eyelid were assessed using a scale of 0 to 3 for each gland (0 represented clear meibum; 1 ...
Qin, Guanghao   +35 more
core   +1 more source

Home - About - Disclaimer - Privacy