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https://www.readbyqxmd.com/read/28316194/-prevalence-and-treatment-effects-of-demodex-species-in-eyelash-follicles-in-patients-with-meibomian-gland-dysfunction
#1
D Chen, R Li, X W Liu, Y Li
Objective: To investigate the prevalence and treatment effects of Demodex species in eyelash follicles in patients with meibomian gland dysfunction (MGD). Methods: The MGD patients (MGD group) and normal subjects (control group) were collected from the Ophthalmology Clinic in PUMCH from July 2015 to December 2015. The symptom score of MGD patients was recorded. Eyelash sampling, Demodex counting, tear film break-up time (BUT), cornea fluorescein staining (Fl) and Schirmer test Ia (S Ⅰ aT) were measured for both groups...
March 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28315383/genetic-equidistance-at-nucleotide-level
#2
Dejian Yuan, Shi Huang
The genetic equidistance phenomenon shows complex taxa to be all approximately equidistant to a less complex species in amino acid percentage identity. The overlooked mystery was re-interpreted by the maximum genetic diversity hypothesis (MGD). Here, we studied 14 proteomes and their coding DNA sequences (CDS) to see if the equidistance phenomenon also holds at the CDS level. We found that the outgroup taxon was equidistant to the two more complex taxa species. When two sister taxa were compared to human as the outgroup, the more complex taxon was closer to human, confirming species complexity to be the primary determinant of MGD...
March 14, 2017: Genomics
https://www.readbyqxmd.com/read/28295626/mechanical-meibomian-gland-squeezing-combined-with-eyelid-scrubs-and-warm-compresses-for-the-treatment-of-meibomian-gland-dysfunction
#3
Hun Lee, Minseo Kim, Si Yoon Park, Eung Kweon Kim, Kyoung Yul Seo, Tae-Im Kim
BACKGROUND: The aim was to investigate the efficacy of mechanical meibomian gland squeezing combined with eyelid scrubs and warm compresses in participants with moderate and severe meibomian gland dysfunction (MGD). METHODS: In this prospective, uncontrolled, open label, intervention study, 32 eyes of 32 participants with moderate and severe MGD were treated with mechanical squeezing of meibomian glands in combination with eyelid scrubs and warm compresses. We evaluated tear film break-up time (TBUT), corneal and conjunctival fluorescein staining scores, biomicroscopic examination of lid margins and meibomian glands, Ocular Surface Disease Index (OSDI) questionnaire and tear film lipid layer thickness determined via an interferometer before initiating treatment and after one month of treatment...
March 12, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28295395/monte-carlo-calculation-of-conversion-coefficients-for-dose-estimation-in-mammography-based-on-a-3d-detailed-breast-model
#4
Wenjing Wang, Rui Qiu, Li Ren, Huan Liu, Zhen Wu, Chunyan Li, Junli Li, Yantao Niu
PURPOSE: At present, the Chinese specification for testing of quality control in X-ray mammography is based on a simple breast model, and does not consider the glandular tissue distribution in the breast. In order to more precisely estimate the mean glandular dose (MGD) in mammography for Chinese women, a three-dimensional (3D) detailed breast model based on realistic structures in the breast and Chinese female breast parameters was built and applied in this study. METHODS: To characterize the Chinese female breast, Chinese female breast parameters including breast size, compressed breast thickness (CBT), and glandular content were investigated in this study...
March 14, 2017: Medical Physics
https://www.readbyqxmd.com/read/28282067/evaluation-of-dry-eye-and-meibomian-gland-dysfunction-with-meibography-in-vitiligo
#5
M Palamar, P Kiyat, I Ertam, A Yagci
PurposeTo evaluate the dry eye and meibomian gland dysfunction (MGD) of vitiligo patients with meibography.MethodsTwenty eyes of 20 vitiligo patients (Group 1) and 20 eyes of 20 healthy individuals (Group 2) were enrolled. All subjects had undergone a comprehensive ophthalmic examination including corneal and conjunctival fluorescein staining (Oxford scale scoring), tear film break-up time (T-BUT), Schirmer 1 test, Ocular Surface Disease Index (OSDI) score assessment, and upper and lower eyelid meibography using infrared captures of a biomicroscope (Topcon, SL-D701, IJssel, The Netherlands)...
March 10, 2017: Eye
https://www.readbyqxmd.com/read/28257381/effect-of-sleep-position-on-the-ocular-surface
#6
David Alevi, Henry D Perry, Alexander Wedel, Eric Rosenberg, Limor Alevi, Eric D Donnenfeld
PURPOSE: Dry eye disease is a multifactorial disease with numerous well-documented risk factors. However, to date, sleep position has not been associated with this condition. After observing patients in our practice, we believe that the sleep position in some cases may significantly affect dry eye and meibomian gland dysfunction (MGD). METHODS: This is a single-centered, cross-sectional, noninterventional, institutional review board-approved, single-masked, nonrandomized study of 100 patients whose complaints were related to dry eye disease and a control group of 25 age-matched asymptomatic patients...
March 1, 2017: Cornea
https://www.readbyqxmd.com/read/28256362/effect-of-pulsed-laser-light-in-patients-with-dry-eye-syndrome
#7
S Guilloto Caballero, J L García Madrona, E Colmenero Reina
OBJECTIVES: The objective of this study was to determine the clinical benefits of pulsed light therapy for the treatment of Dry Eye Syndrome (DES) due to the decrease in aqueous tear production (aqueous deficient DES) and/or excessive tear evaporation (evaporative DES) due to Meibomian Gland Dysfunction (MGD). METHODS: A study was conducted on 72 eyes corresponding to 36 patients with DES. Out of these 72 eyes, 60 underwent refractive surgery (48 with femtosecond laser, 6 were operated with a mechanical microkeratome, and 6 with refractive photo-keratectomy[RPK], 6 treated with phacoemulsification, and 6 with no previous surgical treatment...
February 28, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28241316/clinic-based-study-on-meibomian-gland-dysfunction-in-japan
#8
Shiro Amano, Kenji Inoue
Purpose: To estimate the prevalence of meibomian gland dysfunction (MGD) in the Japanese population. Methods: We undertook a clinical study on the prevalence of MGD in Japan using the same diagnostic criteria as a previous population-based study conducted in Spanish Caucasians. The participants were consecutive patients scheduled for cataract surgery at Inouye Eye Hospital. All participants were aged 50 years or older. Patients completed a symptoms questionnaire and underwent a comprehensive slit-lamp examination...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28219733/meibocyte-differentiation-and-renewal-insights-into-novel-mechanisms-of-meibomian-gland-dysfunction-mgd
#9
REVIEW
Ho Sik Hwang, Geraint J Parfitt, Donald J Brown, James V Jester
This paper reviews our current understanding of age-related meibomian gland dysfunction (MGD) and the role of the nuclear receptor, peroxisome proliferator-activated receptor gamma (PPARγ), in the regulation of meibomian gland function, meibocyte differentiation and lipid synthesis. The studies suggest that PPARγ is a master regulator of meibocyte differentiation and function, whose expression and nuclear signaling coupled with meibocyte renewal is altered during aging, potentially leading to atrophy of the meibomian gland as seen in clinical MGD...
February 17, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28214227/automated-breast-density-computation-in-digital-mammography-and-digital-breast-tomosynthesis-influence-on-mean-glandular-dose-and-birads-density-categorization
#10
Maria Castillo-García, Margarita Chevalier, Julia Garayoa, Alejandro Rodriguez-Ruiz, Diego García-Pinto, Julio Valverde
RATIONALE AND OBJECTIVES: The study aimed to compare the breast density estimates from two algorithms on full-field digital mammography (FFDM) and digital breast tomosynthesis (DBT) and to analyze the clinical implications. MATERIALS AND METHODS: We selected 561 FFDM and DBT examinations from patients without breast pathologies. Two versions of a commercial software (Quantra 2D and Quantra 3D) calculated the volumetric breast density automatically in FFDM and DBT, respectively...
February 14, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28153022/radiation-dose-affected-by-mammographic-composition-and-breast-size-first-application-of-a-radiation-dose-management-system-for-full-field-digital-mammography-in-korean-women
#11
Ji Eun Baek, Bong Joo Kang, Sung Hun Kim, Hyun Sil Lee
BACKGROUND: Relative to Western women, Korean women show several differences in breast-related characteristics, including higher rates of dense breasts and small breasts. We investigated how mammographic composition and breast size affect the glandular dose during full-field digital mammography (FFDM) in Korean women using a radiation dose management system. METHODS: From June 1 to June 30, 2015, 2120 FFDM images from 560 patients were acquired and mammographic breast composition and breast size were assessed...
February 2, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28149788/prevalence-of-ocular-demodicosis-among-patients-at-tertiary-care-center-bangkok-thailand
#12
Ngamjit Kasetsuwan, Kitchaporn Kositphipat, Mathu Busayarat, Pawanrat Threekhan, Kanok Preativatanyou, Atchara Phumee, Padet Siriyasatien
AIM: To determine the prevalence of ocular demodicosis by both microscopic examination and molecular detection among patients at King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok. METHODS: One hundred individuals were enrolled in the study and were divided into five age groups. The meibomian gland dysfunction (MGD) score and qualities of cylindrical dandruff (CD) were also determined. Demodex mite infestations of eyelash samples were screened by both microscopic examination and semi-nested polymerase chain reaction (PCR)...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28132878/emerging-strategies-for-the-diagnosis-and-treatment-of-meibomian-gland-dysfunction-proceedings-of-the-ocean-group-meeting
#13
Gerd Geerling, Christophe Baudouin, Pasquale Aragona, Maurizio Rolando, Kostas G Boboridis, José M Benítez-Del-Castillo, Yonca A Akova, Jesús Merayo-Lloves, Marc Labetoulle, Martin Steinhoff, Elisabeth M Messmer
Meibomian gland dysfunction (MGD) is a common and chronic disorder that has a significant adverse impact on patients' quality of life. It is a leading cause of evaporative dry eye disease (DED), as meibomian glands play an important role in providing lipids to the tear film, which helps to retard the evaporation of tears from the ocular surface. MGD is also often present in conjunction with primary aqueous-deficient DED. Obstructive MGD, the most commonly observed type of MGD, is the main ocus of this article...
January 26, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28116482/is-unilateral-neck-surgery-feasible-in-patients-with-sporadic-primary-hyperparathyroidism-and-double-negative-localisation
#14
D M Scott-Coombes, J Rees, G Jones, M J Stechman
INTRODUCTION: Ultrasound and Tc99mMIBI scans are used to localise parathyroid tumours in sporadic primary hyperparathyroidism (pHPT). Intra-operative PTH (ioPTH) assay facilitates unilateral neck exploration (UNE). When both ultrasound and MIBI are negative, it is our policy to explore the left side of the neck and only proceed to bilateral neck exploration (BNE) when either a tumour is not found or when ioPTH does not fall to >50% of the highest pre-excision value. The aim of this study was to investigate the outcome of our approach to 'double negative' patients...
January 23, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28099212/dysfunctional-tear-syndrome-dry-eye-disease-and-associated-tear-film-disorders-new-strategies-for-diagnosis-and-treatment
#15
REVIEW
Mark S Milner, Kenneth A Beckman, Jodi I Luchs, Quentin B Allen, Richard M Awdeh, John Berdahl, Thomas S Boland, Carlos Buznego, Joseph P Gira, Damien F Goldberg, David Goldman, Raj K Goyal, Mitchell A Jackson, James Katz, Terry Kim, Parag A Majmudar, Ranjan P Malhotra, Marguerite B McDonald, Rajesh K Rajpal, Tal Raviv, Sheri Rowen, Neda Shamie, Jonathan D Solomon, Karl Stonecipher, Shachar Tauber, William Trattler, Keith A Walter, George O Waring, Robert J Weinstock, William F Wiley, Elizabeth Yeu
Dysfunctional tear syndrome (DTS) is a common and complex condition affecting the ocular surface. The health and normal functioning of the ocular surface is dependent on a stable and sufficient tear film. Clinician awareness of conditions affecting the ocular surface has increased in recent years because of expanded research and the publication of diagnosis and treatment guidelines pertaining to disorders resulting in DTS, including the Delphi panel treatment recommendations for DTS (2006), the International Dry Eye Workshop (DEWS) (2007), the Meibomian Gland Dysfunction (MGD) Workshop (2011), and the updated Preferred Practice Pattern guidelines from the American Academy of Ophthalmology pertaining to dry eye and blepharitis (2013)...
January 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28093340/bacteriological-profile-of-ocular-surface-flora-in-meibomian-gland-dysfunction
#16
Shao Dan Zhang, Jing Na He, Tong Tong Niu, Chiu Yeung Chan, Chun Yang Ren, Shan Shan Liu, Yang Qu, Kam Lung Chong, Hai Lin Wang, Jun Tao, Chi Pui Pang
PURPOSE: To compare the bacteriological profile of meibomian gland secretion and conjunctival cul-de-sac in subjects with and without meibomian gland dysfunction (MGD). METHODS: This hospital-based study enrolled 201 eyes from 201 MGD patients and 84 eyes from 84 age- and gender-matched controls. Samples from the conjunctivae and meibomian gland secretion were obtained. Both aerobic and anaerobic cultures were performed. Differences in the culture-positivity and bacterial strains between two groups were compared...
January 13, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28075335/towards-standardization-of-x-ray-beam-filters-in-digital-mammography-and-digital-breast-tomosynthesis-monte-carlo-simulations-and-analytical-modelling
#17
Suman Shrestha, Srinivasan Vedantham, Andrew Karellas
In digital breast tomosynthesis and digital mammography, the x-ray beam filter material and thickness vary between systems. Replacing K-edge filters with Al was investigated with the intent to reduce exposure duration and to simplify system design. Tungsten target x-ray spectra were simulated with K-edge filters (50 µm Rh; 50 µm Ag) and Al filters of varying thickness. Monte Carlo simulations were conducted to quantify the x-ray scatter from various filters alone, scatter-to-primary ratio (SPR) with compressed breasts, and to determine the radiation dose to the breast...
March 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28064087/modelling-the-link-amongst-fine-pore-diffuser-fouling-oxygen-transfer-efficiency-and-aeration-energy-intensity
#18
Manel Garrido-Baserba, Reza Sobhani, Pitiporn Asvapathanagul, Graham W McCarthy, Betty H Olson, Victory Odize, Ahmed Al-Omari, Sudhir Murthy, Andrea Nifong, Johnnie Godwin, Charles B Bott, Michael K Stenstrom, Andrew R Shaw, Diego Rosso
This research systematically studied the behavior of aeration diffuser efficiency over time, and its relation to the energy usage per diffuser. Twelve diffusers were selected for a one year fouling study. Comprehensive aeration efficiency projections were carried out in two WRRFs with different influent rates, and the influence of operating conditions on aeration diffusers' performance was demonstrated. This study showed that the initial energy use, during the first year of operation, of those aeration diffusers located in high rate systems (with solids retention time - SRT-less than 2 days) increased more than 20% in comparison to the conventional systems (2 > SRT)...
December 19, 2016: Water Research
https://www.readbyqxmd.com/read/28060066/assessment-of-the-tear-meniscus-by-strip-meniscometry-and-keratograph-in-patients-with-dry-eye-disease-according-to-the-presence-of-meibomian-gland-dysfunction
#19
Kang Won Lee, Jung Yong Kim, Hee Seung Chin, Kyoung Yul Seo, Tae-Im Kim, Ji Won Jung
PURPOSE: We aimed to compare the tear meniscus measurements using strip meniscometry (SM) and Keratograph5M (K5M) between 3 subtypes of dry eye disease patient groups, classified according to the presence of meibomian gland dysfunction (MGD), and normal subjects. METHODS: We enrolled 145 eyes from 145 subjects and measured the tear meniscus using SM and K5M, tear film breakup time, ocular surface staining, and ocular surface disease index; the Schirmer test; and examined lid margins and meibomian glands...
February 2017: Cornea
https://www.readbyqxmd.com/read/28060064/automated-measurement-of-tear-film-dynamics-and-lipid-layer-thickness-for-assessment-of-non-sj%C3%A3-gren-dry-eye-syndrome-with-meibomian-gland-dysfunction
#20
Yong Woo Ji, Jeihoon Lee, Hun Lee, Kyoung Yul Seo, Eung Kweon Kim, Tae-Im Kim
PURPOSE: To investigate automated values from an advanced corneal topographer with a built-in real keratometer, color camera, and ocular surface interferometer for the evaluation of non-Sjögren dry eye syndrome (NSDES) with meibomian gland dysfunction (MGD). METHODS: Sixty-four patients (64 eyes) diagnosed with NSDES with MGD were enrolled. All eyes were evaluated using the Ocular Surface Disease Index (OSDI), fluorescence staining score, tear film breakup time (TBUT), Schirmer test, and MGD grade...
February 2017: Cornea
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