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https://www.readbyqxmd.com/read/28902011/meibomian-gland-dysfunction-associated-with-periocular-radiotherapy
#1
Young Jun Woo, JaeSang Ko, Yong Woo Ji, Tae-Im Kim, Jin Sook Yoon
PURPOSE: To investigate the influence of periocular radiotherapy on meibomian glands. METHODS: We evaluated 28 patients (40 eyes) who received radiotherapy (RT group) for conjunctival or orbital lymphoma and 30 age-matched control subjects (60 eyes). Subjects underwent slit-lamp examination of the eyelids, Schirmer test, meibography, and evaluation of tear film breakup time (TBUT), Ocular Surface Disease Index (OSDI) scores, meibomian glands evaluation (meiboscore, meibum expressibility, and lid margin abnormality scores), and tear film lipid layer thickness using an ocular surface interferometer...
September 8, 2017: Cornea
https://www.readbyqxmd.com/read/28889077/a-method-for-quantifying-recurrent-patterns-of-local-wavefront-direction-during-atrial-fibrillation
#2
James P Hummel, Alex Baher, Ben Buck, Manuel Fanarjian, Charles L Webber, Joseph G Akar
INTRODUCTION: Spiral wave reentry is a potential mechanism of atrial fibrillation (AF), but is difficult to differentiate clinically from multiple wavelet breakup using standard bipolar recordings. We developed a new methodology using bipolar recordings to estimate the direction of local activation wavefronts during AF by calculating the electrogram conformation (Egm-C). We subsequently used recurrence quantification analysis (RQA) of Egm-C to differentiate regions of spiral wave reentry from wavelet breakup...
September 1, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28872518/tear-osmolarity-and-correlation-with-ocular-surface-parameters-in-patients-with-dry-eye
#3
Priya M Mathews, Sezen Karakus, Devika Agrawal, Holly B Hindman, Pradeep Y Ramulu, Esen K Akpek
PURPOSE: To analyze the distribution of tear film osmolarity in patients with dry eye and its association with other ocular surface parameters. METHODS: Tear osmolarity and other quantitative dry eye parameters were obtained from patients with 1) clinically significant dry eye (significant symptoms and ocular surface staining, n = 131), 2) symptoms-only dry eye (significant symptoms but no significant ocular surface staining, n = 52), and 3) controls (no significant symptoms or staining, n = 42)...
August 31, 2017: Cornea
https://www.readbyqxmd.com/read/28869379/droplet-formation-by-confined-liquid-threads-inside-microchannels
#4
Cees J M van Rijn, Willem G N van Heugten
A confined liquid thread can form monodisperse droplets near the exit of a microchannel, provided the continuous phase is able to enter the microchannel. A general model that accurately predicts the droplet size including the breakup position inside the microchannel is presented and is verified with experimental observations; breakup occurs as long as the capillary number (Ca) of the liquid thread is below a critical capillary number (Cacr); for cylindrical microchannels, it is derived that Cacr = 1/16. Below Cacr, the formed droplets at the exit of the microchannel have a diameter approximately two times the diameter of the liquid thread; around and above Cacr, the liquid thread remains stable and the formed droplets grow infinitely large...
September 12, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28863983/the-utility-of-measuring-tear-film-break-up-time-for-prescribing-contact-lenses
#5
Maryam Mousavi, Danilo A Jesus, Izabela K Garaszczuk, Dorota H Szczesna-Iskander, D Robert Iskander
PURPOSE: To evaluate the clinical value of non-invasive keratograph tear film breakup time (NIKBUT) in the assessment of pre-corneal and pre-lens tear film quality for prescribing contact lenses (CLs). METHODS: Forty-six subjects aged 25.5±4.3 (mean±standard deviation) years were recruited. Visual acuity (VA), anterior eye health checks and NIKBUT were evaluated. On the following day, subjects were fitted with a daily Silicon Hydrogel (SiHy) CL in one eye and a Hydrogel (Hy) CL in the other...
August 29, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28860908/meibography-for-eyes-with-posterior-blepharitis
#6
Abdulrahman AlDarrab, Mohammed Alrajeh, Adel H Alsuhaibani
PURPOSE: To study the effect of posterior blepharitis on meibomian glands using infrared meibography and to correlate the results with tear film parameters. METHODS: This is a prospective cohort study. The study included eyes from two groups: 86 eyes of healthy volunteers' eyes and 72 eyes with posterior blepharitis. Participants were examined, and diagnosis of posterior blepharitis was achieved clinically based on signs of posterior blepharitis. Clinical assessment of dryness was performed including slit lamp examination looking for signs of posterior blepharitis, tear breakup time (TBUT), superficial punctate keratopathy (SPK), Schirmer II test (with anesthesia) and meibum score...
July 2017: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28846481/effectiveness-of-combined-tear-film-therapy-in-patients-with-evaporative-dry-eye-with-short-tear-film-breakup-time
#7
Yung Hui Kim, Yeon Soo Kang, Hyo Seok Lee, Won Choi, In Cheon You, Kyung Chul Yoon
PURPOSE: The aim of this study was to evaluate the effectiveness of combined tear film therapy targeted to aqueous, mucin, and lipid layers in patients with refractory evaporative dry eye (EDE) with short tear film breakup time (TBUT). METHODS: The patients who had EDE with short TBUT and severe symptoms refractory to artificial tears were treated with hyaluronic acid (HA) 0.15% and diquafosol tetrasodium (DQS) 3% (Group 1), HA and carbomer-based lipid-containing eyedrops (Liposic EDO Gel, LPO) (Group 2), or HA, DQS, and LPO (Group 3)...
August 28, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28846429/droplet-bouncing-and-breakup-during-impact-on-a-microgrooved-surface
#8
Laxman K Malla, Nagesh D Patil, Rajneesh Bhardwaj, Adrian Neild
We experimentally investigate the impact dynamics of a microliter water droplet on a hydrophobic microgrooved surface. The surface is fabricated using photolithography, and high-speed visualization is employed to record the time-varying droplet shapes in the transverse and longitudinal directions. The effect of the pitch of the grooved surface and Weber number on the droplet dynamics and impact outcome are studied. At low pitch and Weber number, the maximum droplet spreading is found to be greater in the longitudinal direction than the transverse direction to the grooves...
September 12, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28831305/changes-in-ocular-surface-characteristics-after-switching-from-benzalkonium-chloride-preserved-latanoprost-to-preservative-free-tafluprost-or-benzalkonium-chloride-preserved-tafluprost
#9
Naoto Tokuda, Yasushi Kitaoka, Akiko Matsuzawa, Ayaka Tsukamoto, Kana Sase, Shinsuke Sakae, Hitoshi Takagi
PURPOSE: The aim of the present study was to examine the effects of switching from Latanoprost ophthalmic solution containing a preservative to preservative-free Tafluprost ophthalmic solution or Tafluprost containing a preservative on ocular surfaces. MATERIALS AND METHODS: Forty patients (40 eyes) with glaucoma (mean age: 62.0 ± 10.9 years) using Latanoprost with preservative for six months or longer were assigned either to a Tafluprost-containing-preservative group (20 eyes) or preservative-free-Tafluprost group (20 eyes)...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28827703/atomization-characteristics-and-instabilities-in-the-combustion-of-multi-component-fuel-droplets-with-high-volatility-differential
#10
D Chaitanya Kumar Rao, Srinibas Karmakar, Saptarshi Basu
We delineate and examine the successive stages of ligament-mediated atomization of burning multi-component fuel droplets. Time-resolved high-speed imaging experiments are performed with fuel blends (butanol/Jet A-1 and ethanol/Jet A-1) comprising wide volatility differential, which undergo distinct modes of secondary atomization. Upon the breakup of vapor bubble, depending on the aspect ratio, ligaments grow and break into well-defined (size) droplets for each mode of atomization. The breakup modes either induce mild/intense oscillations on the droplet or completely disintegrate the droplet (micro-explosion)...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28827614/sodium-hyaluronate-in-the-treatment-of-dry-eye-syndrome-a-systematic-review-and-meta-analysis
#11
Bryan Chin Hou Ang, James Jie Sng, Priscilla Xin Hui Wang, Hla Myint Htoon, Louis Hak Tien Tong
This systematic review and meta-analysis compares sodium hyaluronate (HY) with non-HY based artificial tears in the treatment of dry eye syndrome. A literature search for clinical trials comparing HY against non-HY preparations was conducted across PubMed, Cochrane Central Register of Controlled Trials and Scopus databases from inception up to May 2016. Majority of the 18 studies selected for review showed superiority of HY in improving ocular staining and symptoms. Randomized controlled trials (RCTs) examining Schirmer's I (SH) and tear breakup time (TBUT) underwent further meta-analyses with calculation of pooled standardized mean differences (SMDs) with 95% confidence intervals (CIs)...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28822851/-why-are-we-not-doing-more-for-them-genocide-prevention-lessons-from-the-kindertransport
#12
J Angel, D P Evans
OBJECTIVES: Genocide remains one of the most widespread forms of preventable mortality and morbidity for children today. Despite the creation of multiple human rights treaties, genocide has not been eliminated and its effects disproportionally impact children. The Kindertransport was a series of rescue efforts that brought thousands of refugee children to the United Kingdom from Nazi Germany between 1938 and 1940. This qualitative study asks what public health professionals can learn from the prevention efforts of the Kindertransport by examining the experiences and reflections of individuals rescued as children...
August 17, 2017: Public Health
https://www.readbyqxmd.com/read/28822686/the-role-of-human-monoacylglycerol-lipase-hmagl-binding-pocket-in-breakup-of-unsaturated-phospholipid-membranes
#13
Ioannis Karageorgos, Vitalii I Silin, Nikolai Zvonok, John Marino, David R Janero, Alexandros Makriyannis
Human monoacylglycerol lipase (hMAGL) plays a key role in homeostatic tuning of the endocannabinoid signaling system and supports aggressive tumorogenesis, making this enzyme a promising therapeutic target. hMAGL features a membrane-associated lid domain that regulates entry of endocannabinoid lipid substrates into the hydrophobic channel accessing the active site, likely from the membrane bilayer. The present work applied simultaneous surface plasmon resonance and electrochemical impedance spectroscopy measurements to show that, in absence of the substrate, hMAGL can remove phospholipid molecules from the membrane and, thereby, disintegrate pre-formed, intact, tethered phospholipid bilayer membrane mimetics (tBLMs) composed of unsaturated phosphatidylcholines...
August 17, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28822028/effect-of-diquafosol-tetrasodium-3-on-the-conjunctival-surface-and-clinical-findings-after-cataract-surgery-in-patients-with-dry-eye
#14
Lian Cui, Ying Li, Hyo Seok Lee, Jee Myung Yang, Won Choi, Kyung Chul Yoon
PURPOSE: To investigate the effects of diquafosol tetrasodium (DT) 3% on conjunctival impression cytologic findings in addition to clinical symptoms and signs after cataract surgery in patients with preexisting dry eye disease (DED). METHODS: Ninety-four eyes of 94 patients with DED who underwent uneventful cataract surgery were included. In total, 50 patients were treated with DT 3% (group A), while 44 patients were treated with sodium hyaluronate 0.1% (group B) postoperatively, along with topical antibiotics and steroids...
August 18, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28811619/comparative-mitogenomic-analysis-of-aposthonia-borneensis-and-aposthonia-japonica-embioptera-oligotomidae-reveals-divergent-evolution-of-webspinners
#15
Zhi-Teng Chen, Liang Lü, Ming-Xing Lu, Yu-Zhou Du
In this study, we report the complete mitochondrial genome (mitogenome, mtDNA) of Aposthonia borneensis and compare it with another sequenced webspinner, Aposthonia japonica. The A. borneensis mitogenome is smaller than A. japonica, but the size of each gene and the A + T content of protein-coding genes (PCGs) are almost identical in the two mitogenomes. Among the PCGs, atp6 shows the highest evolutionary rate and cox1 the lowest. The mtDNA map in A. borneensis is similar to Drosophila yakuba, but distinctly different from A...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28804665/management-of-traumatic-cataract-with-posterior-capsular-rupture-a-case-report-and-in-vitro-model-study
#16
Wenjuan Wan, Ke Hu, Yan Ji, Can Li
PURPOSE: To investigate the optimal strategy for surgical management of traumatic cataract with posterior capsular rupture. METHODS: We describe four cases of traumatic cataract with posterior capsular rupture and an in vitro model built to evaluate the optimal infusion pressure during surgery. RESULTS: All patients underwent cataract surgery. By using an anterior chamber maintainer to elevate infusion pressure, we safely performed cataract extraction without phacoemulsification...
2017: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/28790802/the-signs-of-ocular-surface-disorders-after-switching-from-latanoprost-to-tafluprost-timolol-fixed-combination-a-prospective-study
#17
Hideaki Okumichi, Yoshiaki Kiuchi, Tetsuya Baba, Takashi Kanamoto, Tomoko Naito, Shunsuke Nakakura, Hitoshi Tabuchi, Hiroki Nii, Chie Sueoka, Yosuke Sugimoto
PURPOSE: To evaluate the ocular-surface safety of a 0.001% benzalkonium chloride-containing tafluprost/timolol fixed combination (TTFC) in patients with primary open-angle glaucoma (POAG) or ocular hypertension who have inadequate intraocular pressure (IOP) control with latanoprost monotherapy. METHODS: This study is a multicenter, prospective, single-arm, open-label clinical study. Patients with POAG or ocular hypertension who have inadequate IOP control with latanoprost monotherapy were considered eligible...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28790800/clinical-utility-of-cyclosporine-csa-ophthalmic-emulsion-0-05-for-symptomatic-relief-in-people-with-chronic-dry-eye-a-review-of-the-literature
#18
REVIEW
Michelle K Rhee, Francis S Mah
To review the literature on the efficacy of cyclosporine (CsA) ophthalmic emulsion 0.05% on symptomatic relief in chronic dry eye disease. There is consistent evidence of objective improvements in chronic dry eye disease (Schirmer score, corneal and interpalpebral dye staining, and tear breakup time) with CsA, but variable results with symptomatic improvement, possibly due to patient tolerance of CsA, similar comforting effect with artificial tears and CsA vehicle, and the inherent subjective nature of symptom monitoring and analysis...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28771505/a-mechanistic-individual-based-model-of-microbial-communities
#19
Pahala Gedara Jayathilake, Prashant Gupta, Bowen Li, Curtis Madsen, Oluwole Oyebamiji, Rebeca González-Cabaleiro, Steve Rushton, Ben Bridgens, David Swailes, Ben Allen, A Stephen McGough, Paolo Zuliani, Irina Dana Ofiteru, Darren Wilkinson, Jinju Chen, Tom Curtis
Accurate predictive modelling of the growth of microbial communities requires the credible representation of the interactions of biological, chemical and mechanical processes. However, although biological and chemical processes are represented in a number of Individual-based Models (IbMs) the interaction of growth and mechanics is limited. Conversely, there are mechanically sophisticated IbMs with only elementary biology and chemistry. This study focuses on addressing these limitations by developing a flexible IbM that can robustly combine the biological, chemical and physical processes that dictate the emergent properties of a wide range of bacterial communities...
2017: PloS One
https://www.readbyqxmd.com/read/28771380/antioxidant-and-osmoprotecting-activity-of-taurine-in-dry-eye-models
#20
Claudio Bucolo, Annamaria Fidilio, Chiara Bianca Maria Platania, Federica Geraci, Francesca Lazzara, Filippo Drago
PURPOSE: To assess the protective effects of ophthalmic formulations based on taurine (TAU) and sodium hyaluronate (SH) in ocular surface. METHODS: Rabbit corneal epithelial cells [Statens Seruminstitut Rabbit Cornea (SIRC)] were subjected to oxidative stress (1 mM H2O2) and treated with the following formulations: 0.2% SH, 0.4% SH, 0.4% SH +0.5% TAU. Reactive oxygen species (ROS) were evaluated by commercial kit. Dry eye was induced by atropine sulfate and topical treatment was carried out with the following formulations: 0...
August 3, 2017: Journal of Ocular Pharmacology and Therapeutics
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