[Mycoplasma infections of the kidneys]

From the urine cultures of 1238 patients with renal or suspicious for renal disease mycoplasmas were isolated in 119 (9.6%). In 75 patients the mycoplasmas were typified. In 56 patients M. hominis and in 24 patients Ur. urealyticum were isolated. In 52 patients there were data for pyelonephritis, in 46 patients there was no renal infection. In 21 patents there were mycoplasmas and arterial hypertension without sufficient data for pyelonephritis. In the group of patients with pyelonephritis and arterial hypertension the infection with M. hominis, which is considered pathogenic for the kidneys, prevailed. In 23 patients a mixed flora was isolated and in 19 of them there was pyelonephritis. In 33 patients (27.7%) there were data for pyelonephritis and an independent Mycoplasma infection. Cases with Mycoplasma hominis prevailed. It is isolated in 16 out of 20 typified strains. All isolated mycoplasmas showed high sensitivity to tetracycline and gentamycin. 51 patients were treated by antibiotics. 35 patients were treated with methacycline, 33 of them successfully. 10 patients were treated with other antibiotics. The tetracyclines are recommended for the treatment of Mycoplasma infections.