Read by QxMD icon Read

Retina, anterior chamber, iris, ciliary body

Barbara Bogner, Falk Schroedl, Andrea Trost, Alexandra Kaser-Eichberger, Christian Runge, Clemens Strohmaier, Karolina A Motloch, Daniela Bruckner, Cornelia Hauser-Kronberger, Hans Christian Bauer, Herbert A Reitsamer
Aquaporins (AQPs) are important for ocular homeostasis and function. While AQP expression has been investigated in ocular tissues of human, mouse, rat and dog, comprehensive data in rabbits are missing. As rabbits are frequently used model organisms in ophthalmic research, the aim of this study was to analyze mRNA expression and to localize AQPs in the rabbit eye. The results were compared with the data published for other species. In cross sections of New Zealand White rabbit eyes AQP0 to AQP5 were labeled by immunohistology and analyzed by confocal microscopy...
June 2016: Experimental Eye Research
Francisco Assis de Andrade, Savio Henrique Serafini Fiorot, Eliezer Israel Benchimol, Jacqueline Provenzano, Vanessa Jandre Martins, Roger Abramino Levy
The eye is divided anatomically in three layers: an outer or fibrous layer (cornea/sclera), middle or vascular layer (uvea - iris, ciliary body, and choroid) and an inner or sensorineural layer (retina). They compose the several anatomic and functional layers that enable the immune protection of the eye. The first layer involves an intact anatomic border with the blood-ocular barrier and immunosuppressive neuropeptides in the native aqueous humor. The second layer trusts on the capability of the eye to reestablish an immunosuppressive micro-environment by activating latent TGF-β and reestablishing the anterior chamber-associated immune deviation...
March 2016: Autoimmunity Reviews
R Salgüero, V Johnson, D Williams, C Hartley, M Holmes, R Dennis, M Herrtage
Although ultrasound and MRI are the imaging modalities of choice for the investigation of ocular diseases, the eyes are included in routine CT examinations of the head and should be examined as part of the complete evaluation. This report describes the dimensions, volumes and densities of the normal canine globe in CT. Forty-four eyes were studied. The mean axial length of the globe was 2.09 cm and its mean volume was 4.65 cm(3). The mean anteroposterior distance of the anterior chamber was 0.4 cm and of the vitreous chamber was 0...
April 11, 2015: Veterinary Record
Virgilio Galvis, Alejandro Tello, Paul Valarezo, Angélica M Prada
We report a case of a 43-year-old patient with coloboma of the iris, zonule, ciliary body, choroid and retina in the right eye and pigment dispersion syndrome in the left eye. Considering the hypothesis of the pigment dispersion syndrome pathogenesis in which a difference of pressures in the anterior and posterior chambers creates a posterior convexity of the iris leading to reverse pupillary block, iris touch and consequently causing pigment dispersion, we suggest that the presence of an iris coloboma, by equalising the pressures in the two chambers, prevented the onset of syndrome in that eye...
2013: BMJ Case Reports
A Fukushima, H Ueno, H Taguchi, T Sawada, I Miyoshi
An animal model of HTLV-I associated uveitis was created. One rabbit developed bilateral uveitis 3,5 years after being injected with blood from an HTLV-I-infected rabbit. The proviral DNA of HTLV-I was detected by polymerase chain reaction and dot-blot hybridization in the aqueous humor of the anterior chamber and the vitreous body. Histopathological examination revealed marked corneal opacity with neovascularization and infiltration of inflammatory cells, mainly plasma cells, into the iris, ciliary body, and choroid...
1993: Ocular Immunology and Inflammation
Atilla Alpay, Sibel Bektas, Aysegul Alpay, Silay Canturk Ugurbas, Cenk Evren, Suat Hayri Ugurbas
PURPOSE: To investigate the histopathological changes due to administration of Ankaferd Blood Stopper(®) (ABS) into intraocular tissues by an anterior chamber and intravitreal injections. METHODS: Twenty Wistar albino rats were divided into four equal groups. Group 1 was injected 0.01 mL ABS into anterior chamber. Group 2 was injected intravitreal 0.02 mL ABS. Groups 3 and 4, which were used as controls, were injected into the anterior chamber and intravitreal 0...
June 2012: Cutaneous and Ocular Toxicology
Jun-hong Li, Zhe Dong, Ning-li Wang
OBJECTIVE: To determine whether matrix metalloproteinase (MMP) inhibitor can provide therapeutic effects for rabbits posterior capsule opacification in vivo and to observe the side effects of this drug on surrounding intraocular structures. METHODS: Experimental research. New Zealand white rabbits were undertaken phacoemulsification operation. GM6001 at different concentrations (100, 200 and 500 µmol/L) and GM6001 negative control liqueur were infused into the capsule bags of the rabbits at the end of operation and two days after the operation...
April 2011: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
Xue-Qian Guo, Bei Tian, Zhi-Cheng Liu, Wen-Bin Wei, Yong Tao, Shi-Jie Sun, Yu Zhang
BACKGROUND: A satisfied glaucoma model is absent now. The aim of this study was to evaluate the effect of a combination of intracameral injection of silicone oil and electrocoagulation of corneal limbal vessels and episcleral veins in the rats to establish glaucoma model. METHODS: Operation was performed in each of the left eyes of 90 adult male rats. Right eyes were used as controls. Measurement of intraocular pressure (IOP) was performed with an applanation tonometer (Tono-Pen)...
January 2011: Chinese Medical Journal
Sharmila Masli, Jose L Vega
The eye is one of the immune privilege sites of the body that is consequently protected from the detrimental and potentially blinding influences of immunologic inflammation. Within the eye, the anterior chamber has been recognized for its immune privilege property for many years now; however, a similar property detectable in the subretinal space has only recently been appreciated. These ocular sites are not only equipped with specialized mechanisms that barricade local inflammatory responses, but also induce systemic regulatory immune response...
2011: Methods in Molecular Biology
Tomohiko Sasase
The Spontaneously Diabetic Torii (SDT) rat, a nonobese type 2 diabetes model, develops severe diabetic retinopathy as result of chronic severe hyperglycemia. Although existing diabetes animal models also develop ocular complications, severe retinal lesions frequently observed in human diabetes patients such as preretinal neovascularization or retinal detachment are not found. Distinctive features in SDT rat are hypermature cataract, tractional retinal detachment with fibrous proliferation, and massive hemorrhaging in the anterior chamber...
2010: Journal of Ophthalmology
Giselle Foureaux, Mizue Imoto Egami, Carlos Jared, Marta Maria Antoniazzi, Robson Campos Gutierre, Ricardo Luiz Smith
The rudimentary characteristic of the eyes of fossorial animals raises some questions regarding its evolution and functionality. Would these eyes result from atrophy or from stagnated development? How would its visual function work? Anatomical investigations of these organs are the fundamental preamble to answer those questions, which are still little explored by the literature. In this article we have studied anatomical aspects of the eyes of three species of fossorial reptiles, within the suborder Amphisbaena (Amphisbaena alba, Amphisbaena mertensi, Leposternon infraorbitale), as well as a species within the ophidian suborder (Typhlops brongersmianus)...
February 2010: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
Heather M Cathcart, Mark A Fields, Mei Zheng, Brendan Marshall, Sally S Atherton
PURPOSE: After uniocular anterior chamber (AC) inoculation with HSV-1, the anterior segment of the injected eye becomes inflamed and infected; however, virus does not spread from the anterior segment and infect the retina of the injected eye. The purpose of this study was to identify early infiltrating cells and to determine whether infiltrating cells produce interferon (IFN)gamma. METHODS: Euthymic, female, BALB/c mice were injected in one AC with 3 x 10(4) PFU of HSV-1 (KOS) in a volume of 2 microL...
May 2009: Investigative Ophthalmology & Visual Science
Takayo Watanabe, Hiroshi Keino, Yasuhiko Sato, Akihiko Kudo, Hayato Kawakami, Annabelle A Okada
PURPOSE: To investigate whether high mobility group box protein (HMGB)-1, acting as a novel proinflammatory cytokine, is involved in experimental autoimmune uveoretinitis (EAU). METHODS: HMGB-1 concentration was measured in aqueous humor, and serum was obtained from Lewis rats immunized with interphotoreceptor retinoid binding protein (IRBP) peptide (R14) and complete Freund adjuvant (CFA), rats immunized with CFA, and nontreated rats on day 14 after immunization...
May 2009: Investigative Ophthalmology & Visual Science
Suhail Al-Salam, Kais Algawi, Moueid Alashari
We present a 6-year-old child with intraocular and extraocular mass and high intraocular pressure. The tumor mass involved a disorganized anterior segment and extended through the medial cornea and sclera. A preliminary diagnosis of retinoblastoma with extraocular extension was made. An exenteration of the left globe and orbital tissue was performed. Histological examination showed that the lesion, which occupied the posterior chamber, involved the ciliary body, extending into the iris, sclera and cornea, projecting beyond the cornea anteriorly and extending to the retina posteriorly...
October 2008: Neuropathology: Official Journal of the Japanese Society of Neuropathology
Yan Zhang, Paul A Overbeek, Venkatesh Govindarajan
PURPOSE: The purpose of this study was to reassess the role of the lens as an "embryonic organizer" of ocular tissues. METHODS: We ablated the lens in mice by lens-specific expression of an attenuated version of diphtheria toxin A subunit(Tox176) driven by a modified crystallin promoter. Alterations in the differentiation programs of ocular tissues were examined by hematoxylin and eosin staining, in situ hybridization, and immunohistochemistry. RESULTS: Transgenic mice in the family OVE1757 exhibited severe microphakia...
2007: Molecular Vision
Parisa Zamiri, Sunao Sugita, J Wayne Streilein
The immune privilege of the anterior chamber of the eye has been recognized for over 100 years. However, the unique immunological properties of the pigmented epithelial (PE) cells of the eye and the subretinal space (SRS) have only recently been appreciated. The PE cells of the iris, ciliary body, and retina reside in anatomically disparate locations and serve distinctly different functions, yet share interesting immunomodulatory properties that contribute to ocular immune privilege. PE cells in the ciliary body and retina elaborate a variety of soluble factors that either directly or indirectly dampen immune-mediated inflammation; these include transforming growth factor-Beta, somatostatin, thrombospondin and pigment epithelial derived factor (PEDF)...
2007: Chemical Immunology and Allergy
Louisa Wickham, Riaz H Asaria, Robert Alexander, Phil Luthert, David G Charteris
AIMS: To characterise the distribution of silicone oil in ocular tissues in globes enucleated after complicated retinal detachment, and to document the distribution and nature of any associated inflammatory response. METHOD: 9 enucleated globes that had previously undergone retinal detachment surgery with silicone oil and 7 control globes that had undergone enucleation after retinal detachment surgery (n = 2) or ocular trauma (n = 5) were studied. Sections were histologically examined using light microscopy to document the distribution of silicone oil in ocular tissues...
February 2007: British Journal of Ophthalmology
Richard Lindstrom, Terry Kim
BACKGROUND: The efficacy of topical nonsteroidal anti-inflammatory drugs (NSAIDs) for inflammation in the anterior segment, and pain control after cataract surgery, is well established. However, their effectiveness in the posterior segment has not been as well studied. Nepafenac ophthalmic suspension, 0.1% is a new topical NSAID pro-drug that has been approved by the US Food and Drug Administration (FDA) for the treatment of pain and inflammation after cataract surgery. Preclinical data suggest nepafenac may also provide unique efficacy in the posterior segment...
February 2006: Current Medical Research and Opinion
Julie H Tsai, John M Freeman, Chi-Chao Chan, Gary S Schwartz, Elizabeth A Derby, Michael R Petersen, Edward J Holland
PURPOSE: To report the characteristics of a newly recognized clinical entity in congenital aniridia that we have termed aniridic fibrosis syndrome. DESIGN: Interventional case series. METHODS: Retrospective chart review of 155 eyes in 80 patients with congenital aniridia was carried out to identify and characterize eyes that had anterior chamber fibrosis. Histopathologic evaluation was performed in three eyes. RESULTS: Seven eyes in six patients were identified to have aniridic fibrosis syndrome...
December 2005: American Journal of Ophthalmology
Anne V Ohlmann, Andreas Ohlmann, Ulrich Welge-Lüssen, Christian A May
PURPOSE: To investigate the localization of endostatin, a potent angiogenesis inhibitor, and its progenitor collagen XVIII in the human eye. METHODS: Twelve normal human eyes were investigated. Immunohistochemistry of the anterior and posterior eye segment was performed using a polyclonal endostatin and collagen XVIII antibody and a monoclonal collagen XVIII antibody. Specificity of the antibodies was confirmed by Western blot analysis. RESULTS: The antibody against collagen XVIII stained Bowman's membrane, the lens capsule, the trabecular meshwork, and all epithelial and endothelial basal membranes in the anterior and posterior eye segment...
January 2005: Current Eye Research
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"