Adsorption of Glycosidic Surfactants at the Mercury Electrode.

The adsorption of glycosidic surfactants from aqueous electrolyte solutions on a mercury electrode was studied by means of differential capacitive measurements (tensammetric method). The adsorption behavior of the mono- and disaccharidic surfactants studied is discussed in relation to their micellar properties, in particular their respective critical micellar concentration (CMC). With monosaccharidic surfactants, a broad and bell-shaped peak is observed on the tensammetric curves and it suggests the formation of a monolayer called hemimicelle at the mercury electrode.

Syntheses and antimicrobial activities of five-membered ring heterocycles coupled to indole moieties.

Indole-substituted oxazolidinones, oxazolones, pyrrolidinone, imidazolidinone and imidazolones were synthesized. Their inhibitory potencies towards protein kinase C and protein kinase A were determined and their in vitro activities against Streptomyces chartreusis, Streptomyces griseus, Bacillus cereus, Candida albicans and Escherichia coli were examined. The inhibition of Streptomyces sporulation observed for some of them could not be linked to in vitro protein kinase C inhibition.

[Surgical experiences with adrenal tumors (author's transl)].

Between 1957 and 1978 the authors operated 15 patients with an adrenal tumor. This series includes six pheochromocytomas, seven cortical tumors, one adrenal cyst and one neuroblastoma. The specific diagnostic and therapeutic problems encountered in this group of different type tumors are discussed.