A light microscopy study of pulps from traumatized permanent incisors with reduced pulpal lumen.

The pulps from 20 traumatized permanent maxillary incisors treated endodontically because progressive hard-tissue formation diminished the pulpal lumen, were studied with light microscopy. The tissue changes were characterized by a varied increase in collagen content. A marked increase in collagen content was associated with a marked decrease in number of cells.

An intestinal receptor for heme.

Porcine upper small intestine took up radioactive heme in vitro. The binder was localised to the brush borders, was solubilized with Triton X-100 and bound heme with high affinity. The binding was inhibited with non-radioactive heme but not with FeSO4, and control experiments indicated that it was not any of the known heme binders or aggregated heme.

Clinical experience with therapeutic arteriovenous fistulae.

Brescia-Cimino arterio-venous fistulae have been used as blood access for intermittent hemodialysis in 67 patients between 1972-74. The mean age of 32 men and 35 women was 48. Thirty-five patients were dialyzed through an external arterio-venous shunt for as long as 7 years before they received a fistula.

Quinton-Scribner arteriovenous shunts for hemodialysis. A review of 6.5 years' experience.

Quinton-Scribner shunts have been used as a reliable access to the blood-stream in 56 patients treated with intermittent hemodialysis in the years 1965-71. The mean age of 29 men and 27 women was 39 years. Two hundred and thirty-two cannulae showed a mean survival time of 11.

Two families with Alport's syndrome.

Alport's syndrome is a hereditary disease striking cochlea, eye and kidney. The diseased women usually have a nonlethal degree of the kidney disease, but the prognosis for the men is worse. They often die from renal failure before the age of 35.