“…On the other hand, Muting [1956] (whose results and conclusions have, however, been criticized by Sfotter [1956] and Kühne & Schultz [1957]) found that prolonged treatment with carbutamide caused a slight decrease of the total serum proteins and a more marked one of serum albumin, as well as a slight increase of serum globulin; he suggested that these changes might possibly be due to early liver damage. Most authors agree that prolonged therapy with hypoglycaemic agents has no toxic effect on the liver parenchyma [Knick, Ruckes & Emrich, 1958;Fister, 1959]. Several investigators have observed no change in the level of serum proteins in diabetics after prolonged treatment with tolbutamide [Steigerwald, Schöffling, Pfeiffer & Meyer, 1957;Mohnike, Ulrich, Bibergeil & Czyzyk, 1957;Stich & Ehrhart, 1957].…”