Dopaminergic neurons in the brain and dopaminergic innervation of the albumen gland in mated and virgin helisoma duryi (mollusca: pulmonata)

Kiehn, Lana; Saleuddin, Saber; Lange, Angela K

doi:10.1186/1472-6793-1-9

Cited by 16 publications

(4 citation statements)

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“…Seven genera, now including Pleurobranchaea , with Aplysia , Biomphalaria , Helix , Helisoma , Lymnaea , and Phestilla , possess substantially larger representations of THli in the PNS relative to the CNS (cf. [9,11,21,25,45,46]). An eighth, Limax , shows a similar pattern of catecholamine fluorescence (likely DA-based; [47]).…”

Section: Discussionmentioning

confidence: 99%

A role for dopamine in the peripheral sensory processing of a gastropod mollusc

et al. 2018

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Histological evidence points to the presence of dopamine (DA) in the cephalic sensory organs of multiple gastropod molluscs, suggesting a possible sensory role for the neurotransmitter. We investigated the sensory function of DA in the nudipleuran Pleurobranchaea californica, in which the central neural correlates of sensation and foraging behavior have been well characterized. Tyrosine hydroxylase-like immunoreactivity (THli), a signature of the dopamine synthetic pathway, was similar to that found in two other opisthobranchs and two pulmonates previously studied: 1) relatively few (<100) THli neuronal somata were observed in the central ganglia, with those observed found in locations similar to those documented in the other snails but varying in number, and 2) the vast majority of THli somata were located in the peripheral nervous system, were associated with ciliated, putative primary sensory cells, and were highly concentrated in chemotactile sensory organs, giving rise to afferent axons projecting to the central nervous system. We extended these findings by observing that applying a selective D2/D3 receptor antagonist to the chemo- and mechanosensory oral veil-tentacle complex of behaving animals significantly delayed feeding behavior in response to an appetitive stimulus. A D1 blocker had no effect. Recordings of the two major cephalic sensory nerves, the tentacle and large oral veil nerves, in a deganglionated head preparation revealed a decrease of stimulus-evoked activity in the former nerve following application of the same D2/D3 antagonist. Broadly, our results implicate DA in sensation and engender speculation regarding the foraging-based decisions the neurotransmitter may serve in the nervous system of Pleurobranchaea and, by extension, other gastropods.

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Section: Discussionmentioning

confidence: 99%

A role for dopamine in the peripheral sensory processing of a gastropod mollusc

et al. 2018

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“…To a critic for attaching deep significance to e 2 /c, we remind that the first decisive step to unify electricity, magnetism and optics was based on a single empirical fact: the near equality of the velocity of propagation of electric and magnetic field disturbances in a dielectric and the velocity of light. As regards to the significance of this problem, we quote Kiehn [3]: "The origin of charge has long been a mystery to physical theory, perhaps even more elusive than the concept of inertial mass", and refer to Weyls speculation on this question [9]. Puzzling aspects of charge in supergravity and brane theories have been recently noted in the literature; a nice discussion is given by Marolf [14].…”

Section: Statement Of the Problemmentioning

confidence: 99%

“…Lorenz. It may also be noted that electromagnetism is a U(1) gauge theory only under certain restrictions [3]. Since the Standard Model (SM) of particle physics is a gauge theory with the gauge group SU(3) X SU(2) X U(1), and there are strong reasons to look beyond SM or seek alternatives [4], the preceding remarks are quite pertinent.…”

Section: Introductionmentioning

confidence: 99%

“…As regards to the significance of this problem, we quote Kiehn [3]: "The origin of charge has long been a mystery to physical theory, perhaps even more elusive than the concept of inertial mass", and refer to Weyls speculation on this question [9]. Puzzling aspects of charge in supergravity and brane theories have been recently noted in the literature; a nice discussion is given by Marolf [14].…”

Section: Introductionmentioning

confidence: 99%

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The Nature of Electronic Charge

Tiwari

2006

Found Phys Lett

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Localization of serotonin in the nervous system of Biomphalaria glabrata, an intermediate host for schistosomiasis

Delgado

Vallejo

2012

J of Comparative Neurology

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The digenetic trematode Schistosoma mansoni that causes the form of schistosomiasis found in the Western Hemisphere requires the freshwater snail Biomphalaria glabrata as its primary intermediate host. It has been proposed that the transition from the free‐living S. mansoni miracidium to parasitic mother sporocyst depends on uptake of biogenic amines, e.g. serotonin, from the snail host. However, little is known about potential sources of serotonin in B. glabrata tissues. This investigation examined the localization of serotonin‐like immunoreactivity (5HTli) in the central nervous system (CNS) and peripheral tissues of B. glabrata. Emphasis was placed on the cephalic and anterior pedal regions that are commonly the sites of S. mansoni miracidium penetration. The anterior foot and body wall were densely innervated by 5HTli fibers but no peripheral immunoreactive neuronal somata were detected. Within the CNS, clusters of 5HTli neurons were observed in the cerebral, pedal, left parietal, and visceral ganglia, suggesting that the peripheral serotonergic fibers originate from the CNS. Double‐labeling experiments (biocytin backfill × serotonin immunoreactivity) of the tentacular nerve and the three major pedal nerves (Pd n. 10, Pd n. 11, and Pd n. 12) disclosed central neurons that project to the cephalopedal periphery. Overall, the central distribution of 5HTli neurons suggests that, as in other gastropods, serotonin regulates the locomotion, reproductive, and feeding systems of Biomphalaria. The projections to the foot and body wall indicate that serotonin may also participate in defensive, nociceptive, or inflammation responses. These observations identify potential sources of host‐derived serotonin in this parasite–host system. J. Comp. Neurol., 520:3236–3255, 2012. © 2012 Wiley Periodicals, Inc.

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Dopaminergic neurons in the brain and dopaminergic innervation of the albumen gland in mated and virgin helisoma duryi (mollusca: pulmonata)

Cited by 16 publications

References 40 publications

A role for dopamine in the peripheral sensory processing of a gastropod mollusc

A role for dopamine in the peripheral sensory processing of a gastropod mollusc

The Nature of Electronic Charge

Localization of serotonin in the nervous system of Biomphalaria glabrata, an intermediate host for schistosomiasis

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