Re-evaluation of hydrostatic pressure treatment for malignant bladder lesions

Regulation of Epithelial Cell Functions by the Osmolality and Hydrostatic Pressure Gradients: A Possible Role of the Tight Junction as a Sensor

Epithelia act as a barrier to the external environment. The extracellular environment constantly changes, and the epithelia are required to regulate their function in accordance with the changes in the environment. It has been reported that a difference of the environment between the apical and basal sides of epithelia such as osmolality and hydrostatic pressure affects various epithelial functions including transepithelial transport, cytoskeleton, and cell proliferation. In this paper, we review the regulation of epithelial functions by the gradients of osmolality and hydrostatic pressure. We also examine the significance of this regulation in pathological conditions especially focusing on the role of the hydrostatic pressure gradient in the pathogenesis of carcinomas. Furthermore, we discuss the mechanism by which epithelia sense the osmotic and hydrostatic pressure gradients and the possible role of the tight junction as a sensor of the extracellular environment to regulate epithelial functions.

The Helmstein bladder distension treatment for tumours and severe bleeding

The Helmstein bladder distension treatment was applied to 26 patients, who received a total of 70 treatments (52 for bladder tumour and 18 for severe bleeding; in 7 cases for both tumour and bleeding). In the T2 tumours total necrosis occurred in 27% of the cases, partial necrosis in 50% and no necrosis in 23%. Of the patients with total necrosis 64% had recurrences within 12 months. In the T3-T4 tumours only 33% had a temporary slight reduction of the tumour mass. In patients with severe bleeding from the bladder, haematuria ceased within 1 to 5 days after the treatment in 12 out of 18 cases. Bleeding, however, recurred after an average of 3 months. It is concluded that the treatment is useful in selected cases with multiple tumours of the bladder, and the method is effective in controlling severe bleeding from the bladder.

Huge bladder carcinoma successfully treated with hydrostatic pressure technique. A case report

A 64-year-old man presented with acute urinary retention and anasarca due to noninvasive multiple papillary transitional cell carcinoma filling the whole bladder cavity and obstructing both ureters. He was treated with hydrostatic pressure distension. A dramatic response occurred, with complete disappearance of the tumour within one month of the treatment.