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Ocular Surface

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https://www.readbyqxmd.com/read/28602948/emerging-strategies-for-antimicrobial-drug-delivery-to-the-ocular-surface-implications-for-infectious-keratitis
#1
REVIEW
Ajay Sharma, Jonathan Taniguchi
Infectious keratitis is a medical emergency that can cause severe visual morbidity if not treated promptly. Depending upon the causative microorganism, effective management of infectious keratitis requires frequent application of antibacterial, antifungal, or antiviral eye drops, which may have low bioavailability, undesirable side effects, and poor patient compliance. Ocular formulations of antimicrobials that can increase corneal permeation and provide extended presence on ocular surface are being developed...
June 7, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28576753/the-function-of-regulatory-t-cells-at-the-ocular-surface-review
#2
REVIEW
William Foulsham, Anna Marmalidou, Afsaneh Amouzegar, Giulia Coco, Yihe Chen, Reza Dana
Regulatory T cells (Tregs) are critical modulators of immune homeostasis. Tregs maintain peripheral tolerance to self-antigens, thereby preventing autoimmune disease. Furthermore, Tregs suppress excessive immune responses deleterious to the host. Recent research has deepened our understanding of how Tregs function at the ocular surface. This manuscript describes the classification, the immunosuppressive mechanisms, and the phenotypic plasticity of Tregs. We review the contribution of Tregs to ocular surface autoimmune disease, as well as the function of Tregs in allergy and infection at the ocular surface...
May 30, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28572031/environmental-impact-on-ocular-surface-disorders-possible-epigenetic-mechanism-modulation-and-potential-biomarkers-a-review
#3
REVIEW
Anna Busanello, Daniela Santucci, Stefano Bonini, Alessandra Micera
Throughout life, external and the internal environments interact in normal development and tissue homeostasis as well as in onset of disease. Epigenetic modifications occur in response to environmental changes and play a fundamental role in controlling gene expression without modification of the DNA base sequence. Aging, inflammation, drugs, infections and ultraviolet exposure may have profound effects on epigenetic modifications and trigger susceptibility to diseases. Increasing evidence has demonstrated that epigenetic mechanisms play a key role in regulating the physiopathology of the ocular surface...
May 29, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28528957/proteasomes-in-corneal-epithelial-cells-and-cultured-autologous-oral-mucosal-epithelial-cell-sheet-caomecs-graft-used-for-the-ocular-surface-regeneration
#4
Fawzia Bardag-Gorce, Richard Hoft, Imara Meepe, Julio Garcia, Kumar Tiger, Andrew Wood, Amanda Laporte, Derek Pan, Andrew Makalinao, Robert Niihara, Joan Oliva, Arjie Florentino, Amber M Gorce, Jeremy Stark, Daileen Cortez, Samuel W French, Yutaka Niihara
PURPOSE: This study focuses on characterizing proteasomes in corneal epithelial cells (CEC) and in cultured autologous oral mucosal epithelial cell sheets (CAOMECS) used to regenerate the ocular surface. METHODS: Limbal stem cell deficiency (LSCD) was surgically induced in rabbit corneas. CAOMECS was engineered and grafted onto corneas with LSCD to regenerate the ocular surface. RESULTS: LSCD caused an increase in inflammatory cells in the ocular surface, an increase in the formation of immunoproteasomes (IPR), and a decrease in the formation of constitutive proteasome (CPR)...
May 18, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28483646/micrornas-in-ocular-surface-and-dry-eye-diseases-good-bad-and-healing-situations
#5
REVIEW
Diane Meyre Rassi, Cintia S De Paiva, Lara Cristina Dias, Carolina Maria Módulo, Leidiane Adriano, Marina Zilio Fantucci, Eduardo Melani Rocha
Since the first description of microRNAs (miRNAs) in the nineties of last century, more than 60 papers have described the role of miRNAs on the ocular surface and lacrimal gland. MicroRNAs (miRNAs) have been implicated in several physiological events and also as mediators of diseases. They inhibit the gene expression by blocking the messenger RNA. Diseases as Sjögren Syndrome (SS), ocular surface neoplasias and infections are known to increase or reduce the expression of specific miRNAs. These miRNAs play key activities in modulating inflammation, delaying or enhancing wound healing, cell differentiation metabolism, and survival...
May 5, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28442381/ocular-surface-alkali-injury-damages-meibomian-glands-in-mice
#6
Shin Mizoguchi, Hiroki Iwanishi, Masahide Kokado, Takayoshi Sumioka, Geraint J Parfitt, Yilu Xie, Reiko Arita, Rika Shirakawa, Osamu Yamanaka, Yuka Okada, James V Jester, Shizuya Saika
PURPOSE: To examine effects of alkali injury of the ocular surface on meibomian gland pathology in mice. METHODS: Three μL of 1 N NaOH were applied under general anesthesia to the right eye of 10-week-old BALB/c (n = 54) mice to produce a total ocular surface alkali burn. The meibomian gland morphology was examined at days 1, 2, 5, 10, and 20 by stereomicroscopy and non-contact infrared meibography. Mice were then sacrificed and eyelids processed for histology with hematoxylin-eosin and immunohistochemistry for ELOVL4, PPARγ, myeloperoxidase (a neutrophil marker) and F4/80 macrophage antigen, as well as TUNEL staining...
April 22, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28442380/incidence-and-risk-factors-of-symptomatic-dry-eye-disease-in-asian-malays-from-the-singapore-malay-eye-study
#7
Ryan E K Man, Anuradha R Veerappan, Shu-Pei Tan, Eva K Fenwick, Charumathi Sabanayagam, Jacqueline Chua, Yuan-Yuh Leong, Tien Yin Wong, Ecosse L Lamoureux, Ching-Yu Cheng, Louis Tong
PURPOSE: To evaluate the incidence of symptomatic dry eye disease (SDED) and associated risk factors in a well-characterized cohort of ethnic Malays in Singapore. METHODS: We included 1682 participants (mean age [SD]: 57 [10]years; 55.4% female) without SDED from the Singapore Malay Eye Study (SiMES), a population-based longitudinal study with baseline examination (SiMES-1) conducted between 2004 and 2006, and follow-up examination (SiMES-2) conducted between 2010 and 2013...
April 22, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28433820/effects-of-punctal-occlusion-on-global-tear-proteins-in-patients-with-dry-eye
#8
Louis Tong, Lei Zhou, Roger Beuerman, Susan Simonyi, David A Hollander, Michael E Stern
PURPOSE: To investigate effects of punctal occlusion on global tear protein levels in patients with dry eye. METHODS: In this prospective, longitudinal, single-center study, nonabsorbable punctal plugs were inserted bilaterally into the lower punctum of 30 patients with moderate dry eye. Dry eye symptoms, fluorescein corneal staining, Schirmer I test, tear film break-up time, and safety were assessed in the more severe eye. Tear proteins at weeks 1 and 3 were quantified by iTRAQ relative to baseline preocclusion levels...
April 19, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28042094/bulbar-conjunctival-microvascular-responses-in-dry-eye
#9
Wan Chen, Hatim Ismail M Batawi, Jimmy R Alava, Anat Galor, Jin Yuan, Constantine D Sarantopoulos, Allison L McClellan, William J Feuer, Roy C Levitt, Jianhua Wang
PURPOSE: Conjunctival microvascular responses may be a surrogate metric of efferent neural pathway function innervating the ocular surface as changes in blood flow occur within seconds after a stimulus. As somatosensory dysfunction may partially underlie dry eye (DE), in this study we evaluate whether bulbar conjunctival microvascular alterations correlate with various aspects of DE. METHODS: Fifty-six DE patients were prospectively recruited from a Veterans Affairs ophthalmology clinic over an 11-month period...
April 2017: Ocular Surface
https://www.readbyqxmd.com/read/28363586/increase-in-tear-film-lipid-layer-thickness-after-instillation-of-3-diquafosol-ophthalmic-solution-in-healthy-human-eyes
#10
Shima Fukuoka, Reiko Arita
PURPOSE: To evaluate the effect of 3% diquafosol ophthalmic solution on tear film lipid layer thickness (LLT) in normal human eyes by tear interferometry. METHODS: Forty-seven healthy men (mean age of 42.4 years) randomly received one drop of artificial tears in one eye and one drop of 3% diquafosol ophthalmic solution in the other. LLT of each eye was quantified by tear interferometry before and 15, 30, and 60 min after instillation. Ocular symptoms were assessed before and 30 min after instillation...
March 28, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28347855/role-of-high-resolution-optical-coherence-tomography-in-diagnosing-ocular-surface-squamous-neoplasia-with-coexisting-ocular-surface-diseases
#11
Marwan Atallah, Madhura Joag, Anat Galor, Guillermo Amescua, Afshan Nanji, Jianhua Wang, Victor L Perez, Sander Dubovy, Carol L Karp
PURPOSE: Coexistence of an ocular surface disease can mask the typical features of ocular surface squamous neoplasia (OSSN). The purpose of this study was to evaluate high resolution optical coherence tomography (HR-OCT) as an adjunct in the detection and differentiation of OSSN within coexisting ocular surface pathologies. METHODS: Retrospective study of 16 patients with ocular surface disease and lesions suspicious for OSSN that were evaluated with HR-OCT. HR-OCT images of the lesions were taken to look for evidence of OSSN...
March 24, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28342814/tear-cytokine-profile-of-glaucoma-patients-treated-with-preservative-free-or-preserved-latanoprost
#12
Jose M Martinez-de-la-Casa, Francisco Perez-Bartolome, Elena Urcelay, Jose L Santiago, Javier Moreno-Montañes, Pedro Arriola-Villalobos, Jose M Benitez-Del-Castillo, Julian Garcia-Feijoo
PURPOSE: To determine variations in cytokine levels of glaucoma patients treated either with preservative-free latanoprost or preserved latanoprost, relative to healthy individuals. METHODS: Tear samples were collected from 39 healthy subjects, 20 glaucoma patients treated with preserved latanoprost, and 20 patients treated with preservative-free latanoprost. A set of 27 inflammatory cytokines was analyzed in each group, including interleukin (IL)-1β, IL-1ra, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL9, IL-10, IL-12 (p70), IL-13, IL-15, IL-17, eotaxin, fibroblast growth factor (FGF) basic, granulocyte colony stimulating factor (G-CSF), granulocyte monocyte colony stimulating factor (GM-CSF), interferon (IFN)-γ, interferon gamma-induced protein (IP)-10, monocyte chemo attractant protein (MCP)-1MCAF, macrophage inflammatory protein (MIP)-1α, MIP-1β, platelet-derived growth factor (PDGF)-BB, regulated on activation, normal T cell expressed and secreted (RANTES), tumor necrosis factor (TNF)-α and vascular endothelial growth factor (VEGF)...
March 22, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28284825/meibomian-gland-morphogenesis-requires-developmental-eyelid-closure-and-lid-fusion
#13
Jingjing Wang, Mindy Call, Maureen Mongan, Winston Whei-Yang Kao, Ying Xia
BACKGROUND AND PURPOSE: Meibomian glands (MGs) play an important role in the maintenance of ocular surface health, but the mechanisms of their development are still poorly understood. The MGs arise from the epithelium at the junction of eyelid fusion, raising the possibility that defective eyelid fusion disturbs the formation of MGs. METHODS: We examined, histologically and functionally, the development of MGs in mice with either normal or defective eyelid fusion, displaying eye-closed at birth (ECB) or eye-open at birth (EOB) phenotypes, respectively...
March 8, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28279746/a-link-between-tear-breakup-and-symptoms-of-ocular-irritation
#14
Jun Zhang, Carolyn G Begley, Ping Situ, Trefford Simpson, Haixia Liu
PURPOSE: We used the presence or absence of a soft contact lens (CL) as a barrier to test the hypothesis that tear breakup (TBU) presents a direct noxious stimulus to the ocular surface. METHODS: Ten subjects kept one eye open as long as possible, termed sustained tear exposure (STARE), for 10 consecutive trials while discomfort was monitored with and without a CL in place. The area of TBU was quantified in each frame. Discomfort was measured during and after each STARE trial and symptoms of ocular irritation were assessed before and after all testing...
March 6, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28179131/rasch-analysis-of-three-dry-eye-questionnaires-and-correlates-with-objective-clinical-tests
#15
Colm McAlinden, Rongrong Gao, Qinmei Wang, Senmiao Zhu, Jing Yang, Ayong Yu, Anthony J Bron, Jinhai Huang
PURPOSE: To assess the psychometric properties of Chinese versions of the Ocular Comfort Index (OCI), Ocular Surface Disease Index (OSDI) and McMonnies questionnaires. Further, to assess the correlation between questionnaire scores and objective dry eye disease (DED) clinical tests. METHODS: Translated versions of the OCI, OSDI and McMonnies questionnaires were completed in a random order by 238 participants with DED. Objective clinical tests included visual acuity (VA), fluorescein tear film break-up time (TBUT), corneal fluorescein staining, Schirmer I testing and meibomian gland grading...
February 4, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28167204/changes-in-corneal-sub-basal-nerve-morphology-and-sensitivity-during-orthokeratology-recovery-of-change
#16
Edward Lum, Blanka Golebiowski, Helen A Swarbrick
PURPOSE: To investigate the recovery of changes in corneal nerve morphology and sensitivity in orthokeratology (OK) following lens wear discontinuation, over a 3-month period. METHODS: Sixteen myopic subjects who wore OK lenses during sleep for 3 months discontinued lens wear for 3 months. Corneal nerve morphology and sensitivity were assessed 3 h after waking on the right eye only at the pre-lens wear baseline and after lens wear discontinuation. Corneal nerve fiber density (NFD) and global nerve fiber orientation (GNFO) were assessed by sampling a 1 mm(2) area of the sub-basal nerve plexus at the corneal apex and temporal mid-periphery using in vivo confocal microscopy...
February 3, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28137653/tidbits
#17
EDITORIAL
J Daniel Nelson
No abstract text is available yet for this article.
January 27, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28137652/chemistry-matters
#18
LETTER
Gary D Novack
No abstract text is available yet for this article.
January 27, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28132878/emerging-strategies-for-the-diagnosis-and-treatment-of-meibomian-gland-dysfunction-proceedings-of-the-ocean-group-meeting
#19
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/28131677/a-randomized-clinical-trial-to-evaluate-the-usefulness-of-amniotic-membrane-transplantation-in-bacterial-keratitis-healing
#20
Seyed Ali Tabatabaei, Mohammad Soleimani, Mahmoud Jabbarvand Behrouz, Ali Torkashvand, Pasha Anvari, Mehdi Yaseri
PURPOSE: To determine whether early amniotic membrane transplantation improves the outcomes among patients with bacterial keratitis. PATIENTS AND METHODS: In this prospective randomized clinical trial 49 eyes from 49 patients with bacterial keratitis received routine antibiotic therapy followed by double-layer amniotic membrane transplantation during 2-5 days after start up of the medications and the second group of 50 eyes from 50 patients only received routine antibacterial therapy...
January 25, 2017: Ocular Surface
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