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T Owman

Publications and source records attributed to T Owman.

47 records · Page 3Linked to original sources
PubMed1976

Fluorescence histochemistry and autoradiography of adrenergic nerves in the renal juxtaglomerular complex of mammals and man, with special regard to the efferent arteriole.

The adrenergic innervation of the juxtaglomerular complex was studied in kidneys from mice, rats, guinea-pigs, rabbits, cats, dogs, pigs, monkeys, and humans using fluorescence histochemistry of neuronal noradrenaline and autoradiography of 3H-noradrenaline. The localization of the nerves was established by phase contrast optics or by perfusing the vascular system with India ink. Adrenergic nerve terminals, exhibiting a formaldehyde-induced fluorescence and having the ability to take up and accumulate 3H-noradrenaline, were easily identified when they enclosed the glomerular afferent arteriole. They continued in between and close to the macula densa and lacis cells to supply the glomerular efferent arteriole. The nerves could be seen to accompany this arteriole for a considerable distance until they branched off to the vasa recta in the juxtamedullary region and to adjacent cortical veins. This innervation pattern was found to be a constant feature except in kidneys from guinea-pigs and cats, in which post-glomerular units. The fluorescence in all adrenergic fibres supplying the juxtaglomerular complex disappeared after removal of the aortico-renal ganglion, showing that they belong to a common system of renal sympathetic nerves.

Adult↗
PubMed1976

Roentgenologic aspects of haematuria.

In the roentgenologic investigation of haematuria, urography is the main diagnostic tool, other examinations being only of supplementary value. The main importance of other roentgen examinations is the possibility of excluding certain types of suspected disease as the cause of haematuria, and to demonstrate certain vascular malformations in the kidneys with renal angiography. Urography and cystoscopy should be performed in all patients with haematuria, and the possibility of pathologic conditions in both upper and lower urinary tract must be kept in mind. A large number of overlooked calculi and the finding of unsuspected malignant renal tumors in cases where the urography was performed on an emergency basis, underlines the important fact that "emergency" in these cases only indicates that the patient is an acute distress, not that the examination should be hasty and incomplete, or if so, should be supplemented by a repeat examination under normal conditions.

Aged↗
PubMedDate not supplied

Embolization of the spleen for treatment of splenomegaly and hypersplenism in patients with portal hypertension.

Splenectomy in cases of hypersplenism involves significant risk of serious complications, including infection, hemorrhage, portal systemic thrombosis, and necrosis of the stomach or small bowel. Alternative procedures such as transcatheter embolization have been associated with a high frequency of splenic or subphrenic abscess, preventing clinical use. We used partial splenic embolization under careful antibiotic protection to successfully treat thrombocytopenia in 18 patients, most of whom had hypersplenism and splenomegaly secondary to portal hypertension. Of the 30 embolizations performed, the only serious complications encountered were abscess in two patients (who had almost total infarction) and four cases of splenic vein thrombosis. We investigated the possible effect of splenic embolization on portal venous pressure in three patients and found no pressure change.

Abscess↗