Electrical Activity of Identified Neurons in the Central Nervous System of a Mollusk Lymnaea stagnalis under Acute Hyperglycemia

2021 ◽  
Vol 57 (6) ◽  
pp. 1257-1266
Author(s):  
A. V. Sidorov ◽  
V. N. Shadenko
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Electrical Activity ◽  
Lymnaea Stagnalis ◽  
Identified Neurons ◽  
Acute Hyperglycemia ◽  
The Central Nervous System

Effects of Certain Indole Amines on Electrical Activity of the Nervous System

1956 ◽  
Vol 185 (3) ◽  
pp. 601-606 ◽  
Author(s):  
Alan G. Slocombe ◽  
Hudson Hoagland ◽  
Lillian S. Tozian
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Electrical Activity ◽  
Lysergic Acid ◽  
Subcortical Structures ◽  
Albino Rat ◽  
Site Of Action ◽  
The Central Nervous System ◽  
Recovery From Anesthesia ◽  
The Brain

Lysergic acid diethylamide (LSD), 5-hydroxytryptamine, and adrenochrome were shown to have properties similar to epinephrine in their effects on the spontaneous electrical activity in the brain of the albino rat. The effects of these drugs were shown to be determined by the type of anesthetic used. In Pentothal-anesthetized animals, profound reduction of the electrical activity in both frequency and amplitude was found in response to these drugs, while in ether-anesthetized animals there was no significant effect. There was a tendency for LSD to increase electrical activity when injected following recovery from anesthesia. The significance of this differential response is discussed with respect to structures in the central nervous system primarily affected by ether and Pentothal, and it is suggested that the site of action of these compounds is in Pentothal-sensitive nonspecific pathways. The site of the depressive action of these drugs with Pentothal is further defined by the fact that both cortical and subcortical structures were equally affected, while respiratory and cardio-regulatory centers were not significantly depressed. This implicates one of the lower nonspecific centers with widespread cortical and subcortical projections.

scholarly journals Primary structure and origin of schistosomin, an anti-gonadotropic neuropeptide of the pond snail Lymnaea stagnalis

1991 ◽  
Vol 279 (3) ◽  
pp. 837-842 ◽  
Author(s):  
P L Hordijk ◽  
H D F H Schallig ◽  
R H M Ebberink ◽  
M de Jong-Brink ◽  
J Joosse
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Primary Structure ◽  
Lymnaea Stagnalis ◽  
Sequence Similarity ◽  
Infected Snail ◽  
Chain Molecule ◽  
Pond Snail ◽  
Single Chain ◽  
The Central Nervous System

In the pond snail Lymnaea stagnalis infected with the schistosome parasite Trichobilharzia ocellata, a peptide called schistosomin is released from the central nervous system, which counteracts the bioactivity of a number of gonadotropic hormones. This leads to inhibition of the reproductive activities of the infected snail. In order to determine the structure of schistosomin, the neuropeptide was purified from the central nervous system using gel-permeation chromatography and reverse-phase h.p.l.c. The complete primary structure of the peptide was determined by N-terminal sequencing and peptide mapping. Schistosomin is a single-chain molecule of 79 amino acids with a molecular mass of 8738 Da. The peptide contains eight cysteine residues which may give rise to four intramolecular disulphide bridges that fold the peptide into a stable globular structure. A database search did not reveal any known peptides that show significant sequence similarity to schistosomin. By means of immunocytochemistry, the peptide was shown to be localized in the growth-controlling neurosecretory light green cells, which are located in the cerebral ganglia of the central nervous system of Lymnaea. In addition to schistosomin, these neurons are known to produce various insulin-related peptides.

Localization of dopamine and its relation to the growth hormone producing cells in the central nervous system of the snail Lymnaea stagnalis

1991 ◽  
Vol 85 (1) ◽  
pp. 1-9 ◽  
Author(s):  
T. R. Werkman ◽  
J. van Minnen ◽  
P. Voorn ◽  
H. W. M. Steinbusch ◽  
B. H. C. Westerink ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Growth Hormone ◽  
Nervous System ◽  
Lymnaea Stagnalis ◽  
The Central Nervous System

STUDIES ON THE ANATOMY OF LYMNAEA HUMILIS SAY

1957 ◽  
Vol 35 (6) ◽  
pp. 751-768 ◽  
Author(s):  
Bruce M. McCraw
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Male Copulatory Organ ◽  
Vas Deferens ◽  
Lymnaea Stagnalis ◽  
Copulatory Organ ◽  
Accessory Structure ◽  
Internal Organs ◽  
Distinct Entity ◽  
The Central Nervous System

The topographic anatomy of Lymnaea humilis is described, giving the relative positions of the various internal organs. A description of the anatomy of the cephalic hemocoele is also given. Like Lymnaea stagnalis the central nervous system of L. humilis consists of the paired cerebral, buccal, pedal, pleural, and parietal ganglia and the unpaired abdominal ganglion. The nerves arising from the central nervous system are described and particular attention was devoted to the nerves arising from the pedal ganglia and innervating the foot; fourteen new nerves are named or described. The reproductive system of L. humilis is divided into: (a) the ovotestis and its duct, (b) the female system, and (c) the male system. In reproductively active snails, the female system is the largest of the three portions, and consists of the uterus, oothecal gland, vagina, and seminal receptacle. An accessory structure, the albumen gland, is very large in L. humilis. The male system consists of the upper and lower prostate, vas deferens, and male copulatory organ. The connections between the hermaphrodite duct and the male and female systems show considerable structural consolidation compared to these connections in L. stagnalis. The muciparous gland is not a distinct entity in L. humilis.

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