[Characteristics of osmotic sensitivity of cells of the supraoptic nucleus of the rat hypothalamus]. 1984

E A Lutsik, and M P Chernysheva

The supraoptic neurons were differentiated into different types by means of antidromic stimulation of the hypothalamo-hypophyseal tract and their responses to i. v. administration of 1 M NaCl solution. I. v. administration of hypertonic NaCl solution induced the activation response in all the neurons. The neurons responding with a single spike to the tract stimulation, reacted only to administration of 1 M NaCl. The neurons responding orthodromically with a high-frequency burst as well as the neurons with no responses to the tract stimulation, revealed reactions of activation similar in time characteristics in administration of both the physiological and the hypertonic solutions. Besides, these neurons were responsive to stimulation of the ipsilateral femoral nerve as well. Possible role of these types of neurons in the functional organization of the rat hypothalamus' supraoptic nucleus, is discussed.

UI MeSH Term Description Entries
D007275 Injections, Intravenous Injections made into a vein for therapeutic or experimental purposes. Intravenous Injections,Injection, Intravenous,Intravenous Injection
D009474 Neurons The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM. Nerve Cells,Cell, Nerve,Cells, Nerve,Nerve Cell,Neuron
D009994 Osmolar Concentration The concentration of osmotically active particles in solution expressed in terms of osmoles of solute per liter of solution. Osmolality is expressed in terms of osmoles of solute per kilogram of solvent. Ionic Strength,Osmolality,Osmolarity,Concentration, Osmolar,Concentrations, Osmolar,Ionic Strengths,Osmolalities,Osmolar Concentrations,Osmolarities,Strength, Ionic,Strengths, Ionic
D009997 Osmotic Pressure The pressure required to prevent the passage of solvent through a semipermeable membrane that separates a pure solvent from a solution of the solvent and solute or that separates different concentrations of a solution. It is proportional to the osmolality of the solution. Osmotic Shock,Hypertonic Shock,Hypertonic Stress,Hypotonic Shock,Hypotonic Stress,Osmotic Stress,Hypertonic Shocks,Hypertonic Stresses,Hypotonic Shocks,Hypotonic Stresses,Osmotic Pressures,Osmotic Shocks,Osmotic Stresses,Pressure, Osmotic,Pressures, Osmotic,Shock, Hypertonic,Shock, Hypotonic,Shock, Osmotic,Shocks, Hypertonic,Shocks, Hypotonic,Shocks, Osmotic,Stress, Hypertonic,Stress, Hypotonic,Stress, Osmotic,Stresses, Hypertonic,Stresses, Hypotonic,Stresses, Osmotic
D011919 Rats, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding. August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012462 Saline Solution, Hypertonic Hypertonic sodium chloride solution. A solution having an osmotic pressure greater than that of physiologic salt solution (0.9 g NaCl in 100 ml purified water). Hypertonic Saline Solution,Hypertonic Solution, Saline,Sodium Chloride Solution, Hypertonic,Hypertonic Saline Solutions,Hypertonic Solutions, Saline,Saline Solutions, Hypertonic,Sodium Chloride Solutions, Hypertonic,Saline Hypertonic Solution,Saline Hypertonic Solutions,Solution, Hypertonic Saline,Solution, Saline Hypertonic,Solutions, Hypertonic Saline,Solutions, Saline Hypertonic
D012965 Sodium Chloride A ubiquitous sodium salt that is commonly used to season food. Sodium Chloride, (22)Na,Sodium Chloride, (24)NaCl
D013495 Supraoptic Nucleus Hypothalamic nucleus overlying the beginning of the OPTIC TRACT. Accessory Supraoptic Group,Nucleus Supraopticus,Supraoptic Nucleus of Hypothalamus,Accessory Supraoptic Groups,Group, Accessory Supraoptic,Groups, Accessory Supraoptic,Hypothalamus Supraoptic Nucleus,Nucleus, Supraoptic,Supraoptic Group, Accessory,Supraoptic Groups, Accessory,Supraopticus, Nucleus

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