On synchronizing pH-sensitive subthreshold oscillations of membrane potential in locus coeruleus (LC) neurones
نویسندگان
چکیده
منابع مشابه
Role of intracellular and extracellular pH in the chemosensitive response of rat locus coeruleus neurones.
The chemosensitive response of locus coeruleus (LC) neurones to changes in intracellular pH (pH(i)), extracellular pH (pH(o)) and molecular CO(2) were investigated using neonatal rat brainstem slices. A new technique was developed that involves the use of perforated patch recordings in combination with fluorescence imaging microscopy to simultaneously measure pH(i) and membrane potential (V(m))...
متن کاملTemperature influences neuronal activity and CO2/pH sensitivity of locus coeruleus neurons in the bullfrog, Lithobates catesbeianus.
The locus coeruleus (LC) is a chemoreceptive brain stem region in anuran amphibians and contains neurons sensitive to physiological changes in CO2/pH. The ventilatory and central sensitivity to CO2/pH is proportional to the temperature in amphibians, i.e., sensitivity increases with increasing temperature. We hypothesized that LC neurons from bullfrogs, Lithobates catesbeianus, would increase C...
متن کاملThe role of left and right Locus Coeruleus in formalin test in rats
Introduction: Pain as a complex process in the CNS has been extensively studied by many researchers. It has been found that pain is controlled by certain pathways in the CNS, one of most important of which is the descending noradrenergic system. The pathway begins with Locus Coeruleus (LC) nucleus and ends in the spinal cord. In this study, formalin test was used as a chemical and tonic pain...
متن کاملEffect of sensory deprivation and Locus Coeruleus (LC) electrical stimulation on the response properties of layer IV barrel cortex neurons in male rats
Introduction: Barrel cortex of rodents is responsible for sensory information processing from muzzle whiskers. Locus coeruleus (LC) as the main source of norepinephrine (NE) in the cortex, is effective on the sensory information processing. Methods: Rats were divided to 2 groups. One group underwent sensory deprivation (P4) and the other group served as control and did not undergo sensory d...
متن کاملExcitation of locus coeruleus neurons by vasoactive intestinal peptide: role of a cAMP and protein kinase A.
In accord with previous studies, it was found that vasoactive intestinal peptide (VIP), a powerful activator of adenylate cyclase, and cAMP-active agents (i.e., 8-Br-cAMP, forskolin, and Ro20-1724) increased the firing rate of noradrenergic neurons in the locus coeruleus (LC) by inducing an inward current. The response to VIP was usually more rapid and larger in a subpopulation of LC neurons wi...
متن کامل