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Effects of Li+ transport and intracellular binding on Li+/Mg2+ competition in b...
Fonseca, C. P.; Montezinho, L. P.; Nabais, C.; Tomé, A. R.; Freitas, H.; Geraldes, C. F. G. C.; Castro, M. M. C. A.Li+ transport, intracellular immobilisation and Li+/Mg2+ competition were studied in Li+-loaded bovine chromaffin cells. Li+ influx rate constants, ki, obtained by atomic absorption (AA) spectrophotometry, in control (without and with ouabain) and depolarising (without and with nitrendipine) conditions, showed that L-type voltage-sensitive Ca2+ channels have an important role in Li+ uptake under depolarising co...
Intracellular lithium and cyclic AMP levels are mutually regulated in neuronal ...
Montezinho, L. P.; Duarte, C. B.; Fonseca, C. P.; Glinka, Y.; Layden, B.; Freitas, D. Mota de; Geraldes, C. F. G. C.; Castro, M. M. C. A.In this work, we studied the effect of intracellular 3',5'-cyclic adenosine monophosphate (cAMP) on Li+ transport in SH-SY5Y cells. The cells were stimulated with forskolin, an adenylate cyclase activator, or with the cAMP analogue, dibutyryl-cAMP. It was observed that under forskolin stimulation both the Li+ influx rate constant and the Li+ accumulation in these cells were increased. Dibutyryl-cAMP also increa...
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