[Prognosis of bleeding recurrence after endoscopic sclerotherapy of esophageal varices].

Objective: To improve prediction of recurrent bleeding after endoscopic sclerotherapy of esophageal varices.

Material And Methods: A prospective, observational, case-control study was performed. Immediate and long-term results of endoscopic sclerotherapy of esophageal varices were studied in 91 patients for the period from 2002 to 2016.

[SUBTOTAL COLECTOMY WITH MESORECTUMECTOMY IN SURGICAL TREATMENT OF A HIRSCHSPRUNG'S DISEASE IN ADULTS].

Hirschsprung's disease (HD) in adults constitutes a rare cause of chronic constipation. Surgical intervention constitutes the only one radical method of treatment of HD. The investigation objective was to improve the functional results of treatment of HD in adults, using a new surgical approach elaboration.

The influence of temperature on photodynamic cell killing in vitro with 5-aminolevulinic acid.

Cell survival was investigated after exposing cells in vitro to different temperatures before or after photodynamic therapy with 5-aminolevulinic acid. The photodynamic process was found to be temperature dependent. Cells exposed for 1h to 41 degrees C before light exposure or to 7 degrees C after light exposure showed decreased survival.

Influence of human serum albumin on photodegradation of folic acid in solution.

It has been proposed that photodegradation of folates may be the reason for the pigmentation of races living under high fluence rates of ultraviolet radiation. The photodegradation of folic acid (FA) induced by ultraviolet-A (UV-A) radiation, in solution and in the presence of human serum albumin (HSA), was studied with absorption and fluorescence spectroscopy. FA photodegradation, with formation of p-aminobenzoyl-l-glutamic acid, 6-formylpterin and pterin-6-carboxylic acid, was found to follow an exponential trend.