Ungewöhnlicher Fall von Struvit-Urolithiasis bei einem Hund

Abstract

A dog was referred for nutrition consultation after surgical removal of struvite uroliths from the bladder. Inspection of the dog's current ration revealed a pronounced vitamin-A deficiency together with a marked deficiency of protein, phosphorus and magnesium. Therefore, a supersaturation of the urine with ammonium, magnesium and phosphate, the three constituents of struvite, as a cause of struvite calculi formation appears rather unlikely. Vitamin-A deficiency can promote urinary infections and consequently struvite stone formation because of the lack of the protective effect of vitamin A on the epithelia of the urinary tract. Not only common causes for struvite urolith formation, including urinary supersaturation with stone-forming constituents and urinary tract infection, but also less common causes, including vitamin-A deficiency, which was the presumed trigger in the present case study, have to be taken into consideration. Dietetic measures appear to be a useful tool in such cases to prevent uroliths from reoccurring.

Infección del tracto urinario por Citrobacter koseri (C. diversus) en un perro con nefrolitiasis

“…Urolitíase pode ser definida como a presença de concreções em qualquer dos órgãos componentes do sistema urinário, com localizações diversas, acometendo desde a pelve renal até a uretra (Calabrò et al, 2011;Osborne et al, 2009). Predisposição familiar ou racial, defeitos congênitos, lesões adquiridas e alimentação inadequada são fatores predisponentes à formação de litíases no trato urinário (TU) (Hunprasit et al, 2017;Mack & Kienzle, 2017). Fármacos como corticosteróides, antibióticos, quimioterápicos e modificadores do pH urinário também favorecem a produção de concreções no TU (Osborne et al, 2009).…”