The elimination half-time and renal clearance of lithium was measured in 12 schizophrenic patients. Minimum plasma lithium concentrations during alternate dosage intervals in 5 patients increased rapidly during the first 2 to 3 days of treatment and reached a steady state level after 5 to 6 days. After the establishment of the remaining 7 patients on lithium the decline in plasma lithium concentration when treatment was stopped was monoexponential. Elimination half-times ranged from 19.3 to 41.3 hours (mean +/- SD = 28.9 +/- 7.9h) and were significantly correlated with renal creatinine clearance (p less than 0.01). Renal lithium clearances ranged from 13.5 to 36.8 ml/min (mean +/- SD = 24.4 +/- 8.0 ml/min) and the apparent volumes of distribution ranged from 0.39 to 1.39 L/kg (mean +/- SD = 0.79 +/- 0.34 L/kg). There was no evidence that the elimination parameters of lithium in schizophrenic patients were significantly different from those in healthy individuals or manic-depressive patients.

Adult↗

PubMedDate not supplied

Conjunctival cryptosporidiosis in a duck.

Cryptosporidial conjunctivitis was detected histologically in one of 17 eight-week-old ducks during an investigation into the cause of conjunctivitis. Another 80 ducks were examined histologically for cryptosporidial conjunctivitis over the next few months. No further cases were detected. Because only one infected bird was detected, it was concluded that the cryptosporidial infection was an incidental finding rather than a primary infection.

Animals↗

PubMedDate not supplied

Respiratory cryptosporidiosis in a peacock chick.

Respiratory cryptosporidiosis was diagnosed in a 2-week-old peacock chick, whose symptoms were a gurgling respiration, coughing and sneezing, and a serous oculonasal discharge. Light microscopy detected cryptosporidial-like organisms attached to the surface of conjunctival, nasal-sinus, and tracheal-epithelial cells, and electron microscopy demonstrated stages typical of cryptosporidial trophozoites, schizonts, and oocysts. About 30 other in-contact peacock chicks also developed the same clinical symptoms, and all died despite treatment with oxytetracycline HCl at 200 ppm in the drinking water.

Animals↗