Bilateral, Simultaneous, Acute Angle Closure Glaucoma in Pseudophakia Induced by Chlorthalidone.

UNLABELLED: Purpose. To report two persons with acute, bilateral, and simultaneous angle closure glaucoma in pseudophakia secondary to uveal effusions induced by administration of chlorthalidone. Methods. CASE REPORTS: Results. Bilateral shallow anterior chambers and high intraocular pressure with decline in visual acuity were reported in two patients within days of intake of chlorthalidone for systemic hypertension. Gonioscopy confirmed appositional angle closure while choroidal detachment and ciliochoroidal detachment were revealed on ultrasonographic studies. Discontinuing chlorthalidone and institution of aqueous suppressants to reduce IOP and cycloplegics reversed angle closure and glaucoma. Conclusions. Reports of angle closure glaucoma in pseudophakic eyes induced by idiosyncratic reaction to chlorthalidone confirms that osmotic changes in the crystalline lens has no role in the pathogenesis of drug induced glaucoma and reaffirms that glaucoma is secondary to ciliochoroidal detachment and ciliary body rotation and edema.

Preliminary study on radioimmunodiagnosis of experimental tumor models using technetium-99m-labeled anti-C-erbB-2 monoclonal antibody.

AIMS AND BACKGROUND: One of the great challenges of oncology is to improve methods for early tumor detection. Diagnosis of premalignant lesions and early stage primary tumors is crucial for the success of cancer therapy and increased survival rates. Growth factor receptors localized to the cell membrane play a vital role in cancer. Monoclonal antibodies labeled with radioisotopes have been used extensively for radioimmunodiagnosis and radioimmunotherapy of various malignancies. A preliminary study on immunoscintigraphy was carried out on animal tumor models using 99mTc-labeled monoclonal antibody CIBCgp185 generated against the CerbB-2 oncoprotein with a view to develop technologies for in vivo radioimmunodetection and localization of human breast cancer. METHODS: Mammary tumor xenografts induced using BT474 cells, a breast carcinoma cell line showing overexpression of C-erbB-2, were used for immunoscintigraphic studies. RESULTS: Scintigrams showed high radiolabel uptake by the tumor tissue of the mice belonging to the experimental group, whereas in control animals no radiolabel uptake was visualized. Biodistribution studies correlated well with scintiscans. CONCLUSIONS: The results indicate the potential application of this monoclonal antibody for in vivo diagnosis of occult malignancies of tumors with overexpression of C-erbB-2.