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Biomedical subjects

C S Bouchard

Publications and source records attributed to C S Bouchard.

25 records · Page 2Linked to original sources
PubMed1990

Update on topical cyclosporin A. Background, immunology, and pharmacology.

Systemic cyclosporin A (CsA) is currently being used for immunosuppression in solid organ transplantation. Its unique mechanism of action and low myelotoxicity have vastly improved the prognosis for patient survival. A reversible and irreversible nephrotoxicity has complicated its use. CsA works via the inhibition of both lymphokine release and subsequent activation of cytotoxic T cells. The corneal allograft model presents several unique features that make it amenable to local immunosuppressant therapy. Following topical application, CsA corneal levels have been obtained above the experimentally determined levels necessary for local immunosuppression. CsA represents one of a new class of specific, potent immunomodulators, which may improve the prognosis for patients at high risk for allograft rejection.

Administration, Topical↗
PubMed1989

Topical cyclosporine in high-risk corneal transplants.

Cyclosporine (cyclosporin A, CsA) is a selective T-cell immunosuppressant that works primarily through inhibition of both antigen presentation and lymphokine production. It has dramatically improved the prognosis for solid organ transplantation. Significant nephrotoxicity has been associated with its systemic use. Topical CsA 2% was used in 11 high-risk corneal transplant patients (8 men; 3 women; average age, 44 years). Ten (91%) of 11 corneas remained clear at an average follow-up of 16 months (range, 6-24 months). All patients had transient epithelial keratitis. Systemic whole blood levels of CsA measured by high-performance liquid chromatography (HPLC) ranged from 14 to 64 ng/ml. All previous reports on the use of topical CsA in high-risk corneal transplant patients have not detected systemic CsA levels.

Administration, Topical↗
PubMedDate not supplied

Dehiscence of radial keratotomy wounds without globe rupture following explosion injury.

PURPOSE: To report a case of explosive trauma to a patient with a history of radial keratotomy (RK), which resulted in multiple wound dehiscences but not globe rupture. METHODS: A 29-year-old male underwent radial keratotomy 1 year before he sustained facial trauma from a gasoline tank explosion. Corneal abrasions were treated with copious irrigation, topical antibiotics, corticosteroids, and scopolamine. He did not have a ruptured globe in either eye. RESULTS: The incision sites from radial keratotomy had evidence of anterior dehiscence in both eyes. One month following the injury, the patient had corrected visual acuity of 20/20-1 in the right eye and 20/25+1 in the left eye. At that time, the RK wounds were well healed with minimal irregularity over the incision sites. CONCLUSION: This case demonstrates the excellent recovery of visual acuity in a patient with a partial thickness traumatic wound rupture 12 months following radial keratotomy.

Adult↗
PubMedDate not supplied

Corneal infiltrates associated with disposable extended wear soft contact lenses: a report of nine cases.

We report nine cases of corneal infiltrates and/or ulceration in patients using disposable extended wear contact lenses. None of the nine patients had worn the lenses more than the recommended 7 days. Cultures were performed on six of the patients; all cultures were negative. One of the six cultured patients had been treated with topical antibiotics prior to culture. All responded promptly to cessation of lens wear and topical antibiotic therapy. Although all of the infiltrates/ulcers were paracentral, none of the patients sustained any permanent visual loss.

Adult↗