@article{ScheweSchmaelzlinWalz2008, author = {Schewe, Bettina and Schmaelzlin, Elmar and Walz, Bernd}, title = {Intracellular pH homeostasis and serotonin-induced pH changes in Calliphora salivary glands : the contribution of V-ATPase and carbonic anhydrase}, year = {2008}, language = {en} } @article{WalzBaumannKrachetal.2006, author = {Walz, Bernd and Baumann, Otto and Krach, Christian and Baumann, Arnd and Blenau, Wolfgang}, title = {The aminergic control of cockroach salivary glands}, year = {2006}, abstract = {The acinar salivary glands of cockroaches receive a dual innervation from the subesophageal ganglion and the stomatogastric nervous system. Acinar cells are surrounded by a plexus of dopaminergic and serotonergic varicose fibers. In addition, seroton-ergic terminals lie deep in the extracellulor spaces between acinar cells. Excitation-secretion coupling in cockroach salivary glands is stimulated by both dopamine and serotonin. These monoamines cause increases in the intracellular concentrations of cAMP and Ca2+. Stimulation of the glands by serotonin results in the production of a protein-rich saliva, whereas stimulation by dopamine results in saliva that is protein-free. Thus, two elementary secretary processes, namely electrolyte/water secretion and protein secretion, are triggered by different aminergic transmitters. Because of its simplicity and experimental accessibility, cockroach salivary glands have been used extensively as a model system to study the cellular actions of biogenic amines and to examine the pharmacological properties of biogenic amine receptors. In this review, we summarize current knowledge concerning the aminergic control of cockroach salivary glands and discuss our efforts to characterize Periplaneta biogenic amine receptors molecularly}, language = {en} } @misc{SchmaelzlinWalzKlimantetal.2006, author = {Schm{\"a}lzlin, Elmar and Walz, Bernd and Klimant, Ingo and Schewe, Bettina and L{\"o}hmannsr{\"o}ben, Hans-Gerd}, title = {Monitoring hormone-induced oxygen consumption in the salivary glands of the blowfly, Calliphora vicina, by use of luminescent microbeads}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-12206}, year = {2006}, abstract = {The salivary glands of the blowfly were injected with luminescent oxygen-sensitive microbeads. The changes in oxygen content within individual gland tubules during hormone-induced secretory activity were quantified. The measurements are based on an upgraded phase-modulation technique, where the phase shift of the sensor phosphorescence is determined independently from concentration and background signals. We show that the combination of a lock-in amplifier with a fluorescence microscope results in a convenient setup to measure oxygen concentrations within living animal tissues at the cellular level.}, language = {en} }