Regulation of Calcium Influx in Chara

Regulation of Calcium Influx in Chara: Effects of K, pH, Metabolic Inhibition, and Calcium Channel Blockers.

Measurements were made of (45)Ca influx into isolated internodal cells of Chara corallina and also into internodal cells of intact plants. (45)Ca influx was closely related to growth. In rapidly expanding internodal cells, the influx was approximately 1.4 nmol m(-2) s(-1) compared to the influx in mature cells from slow-growing cultures of 0.2 nmol m(-2) s(-1). Isolated internodal cells had inf...

Regulation of Calcium Influx in Drosophila Motorneuron Axon Degeneration

.....................................3 Introduction...............................4 Materials and Methods...........17 Results........................................21 Development of the Ex vivo Assay.............................................................................................................21 Wallerian Degeneration Proceeds Normally in the Ex vivo Assay..........................

A novel calcium-activated protease in Chara corallina

Essential role of calcium influx in the adrenergic regulation of cAMP and cGMP in rat pinealocytes.

The role of Ca2+ in the adrenergic stimulation of pinealocyte cAMP and cGMP was investigated. In this tissue alpha 1-adrenoceptor activation, which by itself is without effect, potentiates beta 1-adrenergic stimulation of cAMP and cGMP 30- to 100-fold. The present results indicate that chelation of extracellular Ca2+ with EGTA or inhibition of Ca2+ influx with inorganic Ca2+ channel blockers (L...

Influx of calcium through L-type calcium channels in early postnatal regulation of chloride transporters in the rat hippocampus.

During the early postnatal period, GABA(B) receptor activation facilitates L-type calcium current in rat hippocampus. One developmental process that L-type current may regulate is the change in expression of the K(+)Cl(-) co-transporter (KCC2) and N(+)K(+)2Cl(-) co-transporter (NKCC1), which are involved in the maturation of the GABAergic system. The present study investigated the connection be...