Publications by authors named "Amir Mohsenin"

Background And Objective: To describe the presentation and the authors' evolving management strategy for intraocular dissemination of uveal melanoma cells following radiotherapy during the past decade.

Patients And Methods: Patients with uveal melanoma who developed intraocular dissemination of pigmented cells following radiotherapy. Histopathology was available in two cases.

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In the mouse retina, more than 30 retinal ganglion cell (RGC) subtypes have been classified based on a combined metric of morphological and functional characteristics. RGCs arise from a common pool of retinal progenitor cells during embryonic stages and differentiate into mature subtypes in adult retinas. However, the cellular and molecular mechanisms controlling formation and maturation of such remarkable cellular diversity remain unknown.

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Purpose: To apply a previously published scleral fixation technique to secure one-piece acrylic intraocular lenses (IOLs) to the sclera.

Methods: Retrospective, consecutive, noncomparative case series.

Results: All patients (16 eyes of 15 patients) who underwent scleral fixation of 1-piece acrylic IOLs using the loop method from 2014 to 2016 were included.

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To determine if receiving a prescheduled appointment is associated with an increased likelihood of complying with follow-up eye care among individuals identified as at risk for glaucoma during community-based glaucoma screening in an urban underserved population. This study sampled 362 individuals aged ≥30 years without known glaucoma from low-income, predominantly black/Hispanic neighborhoods in New Haven, Connecticut presenting to one of twelve community-based glaucoma screening events from May 2010 to October 2012. A quasi-experimental design systematically assigned 63 individuals identified as at risk for glaucoma into either intervention or control group with a 1:2 ratio.

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Purpose: Endothelial dysfunction and vascular disease are common in obstructive sleep apnea (OSA). We sought to examine the retinal vascular manifestations of OSA.

Methods: Nine consecutive patients with OSA underwent ophthalmic examination regardless of any ocular complaints.

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This report describes a unique case of coexisting necrobiotic xanthogranuloma and chronic lymphocytic leukemia in a patient presenting with scleritis and uveitis. A 53-year-old Caucasian man diagnosed with anterior uveitis and scleritis for the prior year was referred to our uveitis clinic for further evaluation. Prior uveitis/scleritis workup performed by the referring ophthalmologist was negative.

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Inflammation of the eye is often times seen in association with systemic inflammatory diseases. Understanding the various forms of ocular involvement in these conditions is important as untreated ophthalmic involvement can lead to severe vision loss. In addition to providing a basic framework for diagnosis and treatment, this review will highlight the ocular manifestations of the following systemic inflammatory conditions: rheumatoid arthritis, systemic lupus erythematosus, Wegener's granulomatosis, Sjögren's syndrome, polyarteritisnodosa, primary antiphospholipid syndrome, Behçet's syndrome, Kawasaki disease, Cogan's syndrome and relapsing polychondritis.

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Adenosine is a signaling nucleoside that is generated in response to cellular injury and orchestrates the balance between tissue protection and the progression to pathological tissue remodeling. Adenosine deaminase (ADA)-deficient mice develop progressive airway inflammation and remodeling in association with adenosine elevations, suggesting that adenosine can promote features of chronic lung disease. Furthermore, pharmacological studies in ADA-deficient mice demonstrate that A(2B)R antagonism can attenuate features of chronic lung disease, implicating this receptor in the progression of chronic lung disease.

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Adenosine is a signaling molecule produced during conditions that cause cellular stress or damage. This signaling pathway is implicated in the regulation of pulmonary disorders through the selective engagement of adenosine receptors. The goal of this study was to examine the involvement of the A(3) adenosine receptor (A(3)R) in a bleomycin model of pulmonary inflammation and fibrosis.

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Adenosine is generated at sites of tissue injury where it serves to regulate inflammation and damage. Adenosine signaling has been implicated in the regulation of pulmonary inflammation and damage in diseases such as asthma and chronic obstructive pulmonary disease; however, the contribution of specific adenosine receptors to key immunoregulatory processes in these diseases is still unclear. Mice deficient in the purine catabolic enzyme adenosine deaminase (ADA) develop pulmonary inflammation and mucous metaplasia in association with adenosine elevations making them a useful model for assessing the contribution of specific adenosine receptors to adenosine-mediated pulmonary disease.

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Angiogenesis is a feature of chronic lung diseases such as asthma and pulmonary fibrosis; however, the pathways controlling pathological angiogenesis during lung disease are not completely understood. Adenosine is a signaling molecule that has been implicated in the exacerbation of chronic lung disease and in the regulation of angiogenesis; however, the relationship between these factors has not been investigated. The current study utilized adenosine deaminase (ADA)-deficient mice to determine whether chronic elevations in adenosine in vivo result in pulmonary angiogenesis.

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Adenosine has been implicated in the pathogenesis of chronic lung diseases such as asthma and chronic obstructive pulmonary disease. In vitro studies suggest that activation of the A2B adenosine receptor (A2BAR) results in proinflammatory and profibrotic effects relevant to the progression of lung diseases; however, in vivo data supporting these observations are lacking. Adenosine deaminase-deficient (ADA-deficient) mice develop pulmonary inflammation and injury that are dependent on increased lung adenosine levels.

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Purpose Of Review: The chronic lung diseases, asthma and chronic obstructive pulmonary disease, are pulmonary disorders in which persistent inflammation and alterations in lung structure contribute to a progressive loss of lung function. Although the exact type of inflammation and damage in each disease is distinct, they share the common feature that they are chronic in nature. Despite efforts, little is known about the cellular and molecular mechanisms that drive the chronicity of these two diseases.

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Adenosine, a signaling nucleoside, exhibits tissue-protective and tissue-destructive effects. Adenosine levels in tissues are controlled in part by the enzyme adenosine deaminase (ADA). ADA-deficient mice accumulate adenosine levels in multiple tissues, including the lung, where adenosine contributes to the development of pulmonary inflammation and chronic airway remodeling.

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In lung injury and progressive lung diseases, the multifunctional cytokine transforming growth factor-beta1 (TGF-beta1) modulates inflammatory responses and wound repair. Heme oxygenase-1 (HO-1) is a stress-inducible protein that has been demonstrated to confer cytoprotection against oxidative injury and provide a vital function in maintaining tissue homeostasis. Here we report that TGF-beta1 is a potent inducer of HO-1 and examined the signaling pathway by which TGF-beta1 regulates HO-1 expression in human lung epithelial cells (A549).

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