Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0022568 (keratitis)
 5,133 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Forty four patients with virus conjunctivitis, keratitis, uveitis and retinitis were treated by acyclovir in tablets--5 times a day 400 mg.; the results were satisfactory. The drug was well tolerated and it could be used also in patients who showed hypersensitivity for acyclovir after ++intra-conjunctival application in the form of ointment.
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PMID:[Oral acyclovir treatment of viral eye infections]. 145 71

Many studies have described the presence of circulating antibodies against corneal components in patients with corneal disease or uveitis, and in patients with skin or systemic disease with or without ocular involvement. The role of such antibodies in the underlying immunopathological process remains obscure. Here we describe the induction of autoantibodies against the rat cornea. Our attempts to induce corneal autoantibodies by various forms of keratitis and corneal trauma failed. However, circulating corneal autoantibodies could be detected by Western blotting after immunization of BN rats and Lewis rats with bovine corneal protein 54 (BCP 54). Rats immunized with rat corneal extracts (RaCE) or human serum albumin (HSA) as (auto) antigen did not develop corneal autoantibodies. During the study period (greater than 4 months), it was observed that the presence of circulating corneal autoantibodies did not elicit corneal inflammation. Severe keratitis did develop when BCP 54-immunized rats were challenged intracorneally with BCP 54, but the clinical signs were not significantly different from HSA-immunized rats after an intracorneal HSA challenge. Injection of corneal autoantibodies into the corneal stroma did not provoke keratitis. To the best of our knowledge this is the first study demonstrating corneal autoantibodies in rats without actual manipulation of the eye. This model may provide further insights in the role and significance of corneal autoantibodies in disease.
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PMID:Induction of autoantibodies to rat corneal protein 54. 156 95

Platelet-activating factor (PAF) is a membrane-derived lipid mediator involved in inflammatory responses. In the present study, the effect of a new, synthetic PAF antagonist, BN 50726, on ocular-blood barrier breakdown was investigated in a model of anterior uveitis produced by injection of 5 microL 0.1% endotoxin into the midstroma of rabbit corneas. Severe keratitis and anterior uveitis were induced in 3-4 days. BN 50726 was applied once subconjunctivally and then topically four times daily for 5 days in a blind-designed experiment. Vascular permeability was measured each day with an automated fluorophotometer after injection of fluorescein-conjugated dextran. BN 50726 significantly decreased ocular vascular permeability up to the fifth day of treatment. In another series of animals, slit-lamp observation showed significant reduction in iris erythema and epithelial damage with BN 50726 treatment. These results show that the PAF antagonist reduces early and late responses in uveitis. The possibility that PAF interacts with other inflammatory mediators to affect breakdown of the blood-aqueous barrier is discussed.
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PMID:Prolonged effect of a new platelet-activating factor antagonist on ocular vascular permeability in an endotoxin model of uveitis. 170 99

We reviewed 45 eyes with active or inactive herpetic keratitis that underwent penetrating keratoplasty. In Group I, 15 eyes underwent penetrating keratoplasty without prior optical iridectomy. In Group II, 15 eyes underwent penetrating keratoplasty after prior optical iridectomy. In Group III, 15 eyes underwent penetrating keratoplasty with pupilloplasty after prior optical iridectomy. Graft clarity of 3+ or more was obtained after one year in 67%, 33%, and 60% of eyes in Groups I, II, and III, respectively. Visual outcome of 6/24 or better was found in 53% of all eyes during the one-year follow-up. The occurrence of cataract both pre- and postoperatively could have been a result of prolonged use of corticosteroids and/or uveitis. Although there were several variables apart from preoperative vascularization and cataract, prior optical iridectomy was identified as a risk factor with regard to post-operative complications, final visual acuity, and graft clarity.
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PMID:Prognosis of keratoplasty in viral keratitis. 177 68

The pathogenesis of peripheral corneal lesions of immune aetiology, like Mooren's ulcer and catarrhal infiltrates, has been related to the formation or deposition of immune compkexes. The present investigation was undertaken to study the mechanisms involved in the elimination of immune precipitates from the cornea. Immune precipitates were induced by injecting human serum albumin (HSA) and rabbit anti-HSA serum into opposite sites of the rat corneal stroma. This resulted in a line-shaped opacity in the stroma, which remained visible by slit-lamp for 7 days, and disappeared without clinical signs of keratitis and uveitis. At the ultrastructural level, the immune precipitates were clearly visible. Keratocytes in the vicinity of the immune precipitates appeared activated, as suggested by their less flattened appearance and well-developed rough endoplasmic reticulum. The arrangement of the collagen fibrils was not affected. Cells with a macrophage-like morphology were also present and contained electron-dense material, closely resembling the precipitate, suggesting phagocytosis. Separate corneas were injected with latex beads, which is known to induce migration of Langerhans cells into the cornea. Immunohistochemical analysis revealed that both latex beads and immune precipitates induced migration of macrophages (ED1+) into the rat corneal stroma. However, differences were observed with regard to the expression of MHC class II antigens by these ED1+ cells and the presence of complement deposits in the corneal stroma. ED1+ cells in corneas injected with latex beads were all MHC class II positive (OX4+), whereas most of the ED1+ cells at the site of the immune precipitates were negative (OX4-).(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Elimination of immune precipitates from the rat corneal stroma: a histological study. 193 83

The optimal management of herpes simplex stromal keratitis and uveitis is controversial. Thirty-two patients with presumptive herpetic anterior uveitis without active corneal inflammation received 3% acyclovir ophthalmic ointment five times daily and acyclovir 200mg orally five times a day. Eight of 18 patients (44.4%) who had received corticosteroids deteriorated over the first five days of therapy; one of 14 patients (7.1%) without previous corticosteroid use worsened during this time (P less than .05). The mean healing time was similar in these two groups. These results suggest that antiviral therapy may be first-line treatment in patients with herpetic keratouveitis who have not received corticosteroids.
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PMID:Acyclovir in herpetic anterior uveitis. 201 71

Epstein-Barr virus (EBV) is a ubiquitous DNA virus of the herpesvirus genus with a high prevalence rate for antibody (about 90%) in the adult population. It is the most common causative agent of infectious mononucleosis syndrome. During recent years an increasing number of ocular disease entities have been reported to be linked to EBV infection. These entities include oculoglandular syndrome, conjunctivitis, dry eye, keratitis, uveitis, choroiditis, retinitis, papillitis and ophthalmoplegia. While EBV-specific serologic tests can now document recent and past primary infection with EBV and also identify patients manifesting atypical immunologic reactions to EBV, the lack of an animal model, the absence of clear-cut response to therapy and the paucity of documentation by culture render the pathogenesis uncertain or the association questionable in many of these cases.
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PMID:Ocular disease associated with Epstein-Barr virus infection. 217 61

A prospective double blind study was carried out to evaluate the role of soluble antigen fluorescent antibody (SAFA) test to detect ocular Tuberculosis. The study material comprised 39 patients with suspected ocular tuberculosis suffering from interstitial keratitis, sclero keratitis, granulomatous uveitis, phlyctenular keratoconjunctivitis, Eales disease and central serous retinopathy. The cases of proven ocular tuberculosis showed up as 70 percent strong reactors and 30 percent weak reactors to SAFA while none had a negative response to SAFA. Of these cases skin hypersensitivity reaction was positive only in 40 percent of the cases. The control group revealed a strong SAFA reaction in only 4 percent of cases with a weak reaction in 44 percent of cases. It thus appears that SAFA test can provide a useful addition to the routine tests in diagnosing tuberculosis.
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PMID:SAFA test as an aid to the diagnosis of ocular tuberculosis. 220 25

Clinical picture and course of eye involvement were studied in 254 patients with Reiter's disease. Altogether 130 patients suffered from conjunctivitis of varying severity, 23 from keratitis, 21 from episcleritis, 20 from uveitis, 2 from detachment of the retina, and 5 from secondary glaucoma. Chlamydia were detected in one third of conjunctivitis patients in scrapings off the conjunctiva. The eyes may be accidentally infected by agents from the urogenital organs if the patient does not observe the hygienic rules. Uveitis developed as a rule after a prolonged course of Reiter's disease. They were resistant to antichlamydial therapy because of autoimmune factors that underlay the condition pathogenesis. Deposits of immune complexes on antigens of ocular vascular coating were detected with the use of monospecific antiglobulin sera in 7 of 10 patients with active uveitis symptoms. The risk of Reiter's disease development in HLA B27 carriers is 27.17 times higher than the mean incidence of this disease in the population. HLA A9 and B40 antigen combinations occurred 7 times more often in uveitis patients than in reference subjects, A1 and B27 combinations were 4-5 times more incident.
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PMID:[Ophthalmological aspects of Reiter's disease]. 223 33

The authors implanted intraocular lenses (IOL) in 780 eyes and considered complications of this surgery, dividing the complications into intraoperative and postoperative, the latter early and late. The most frequent intraoperative complications were: hyphema, vitreous injury, pupil deformation with an IOL in the anterior chamber (AC), and hyphema and corneal lesions with an IOL in the posterior chamber (PC). Among the early postoperative complications of an IOL in the AC the authors noticed striate keratopathy and uveal flare and postoperative transitory ocular hypertension and striate keratitis with an IOL in the PC. Moreover, in late postoperative complications in AC implantation they observed: cystoid macular edema, bullous keratitis, retinal detachment, late uveitis, opacification of posterior capsule, eccentric displacement of the IOL, and less frequently, cystoid macular edema in PC implantations. The authors prefer IOL implantation in the PC after extracapsular cataract extraction, since this surgery causes less problems in the cornea, vitreous, and retina.
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PMID:Intraocular lens complications. 224 19


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