[A study of cefoperazone prostatic tissue levels: difference between the gland and capsule]

Prostatic tissue levels of Cefoperazone (CPZ) were determined in 34 patients with prostatic hypertrophy after the intravenous administration of 1 g of CPZ. Prostatic tissue levels of CPZ decreased slowly with time and the elimination half-life was 125 to 171 minutes. The CPZ concentration in the surgical capsule was higher than that in the gland. As compared with the minimal inhibitory concentrations of CPZ, the prostatic tissue levels were considered high enough for the treatment of post-prostatectomy and bacterial prostatitis. Neither the pathological type of prostatic hypertrophy, that of infiltrations, nor the weight of the removed tissue was correlated to the tissue levels of CPZ.

An autopsy case of Tay-Sachs disease--with special reference to axonal swellings of the central nervous system and freeze-fracture replication studies of the membranous cytoplasmic bodies

The following is a report of the light and electron microscopic findings of the axonal swellings of the central nervous system and the freeze-fracture replication studies of the membranous cytoplasmic bodies in Tay-Sachs disease. The axonal swellings were observed mainly in the subthalamic nucleus, thalamus, globus pallidus, red nucleus, dentate nucleus, inferior olivary nucleus, nucleus gracilis, spinal anterior nucleus and so on. They contained many electron dense bodies and neurofilaments. Typical membranous cytoplasmic bodies were not seen in these axonal swellings. The freeze-fracture replication studies demonstrated that the membranous cytoplasmic bodies were composed of parallel stacks or concentric whorls of lamellae at an interval of 5 to 6 nm, with membrane-associated particles of 8 to 10 nm diameters on their protoplasmic face. It was postulated that the membranous cytoplasmic bodies constituted various compound lipids including the GM2-ganglioside and some proteins.