Biomaterial Database

[Effects of acetyl-DL-leucine on the recovery of the locomotor equilibrium and spontaneous discharge of lateral vestibular nucleus neurons in unilateral vestibular neurectomized cats]. 1997

J Sun

Department of Physiology and Biophysics, College of Life Sciences, Peking University, Beijing.

The effects of acetyl-DL-leucine (AL) treatment (28 mg/kg.day, p.o.) on the vestibular compensation were studied over period of 6 weeks in unilateral vestibular neurectomized cats. This investigation was performed by measuring the recovery time of locomotor equilibrium in the rotating beam test and recording the unitary extracellular activity of single neurons of lateral vestibular nucleus (LVN) in totally awake cats. The results showed that AL treatment strongly accelerated the recovery of locomotor equilibrium and significantly inhibited the recovery of resting spontaneous firing rate within the deafferented LVN neurons (n = 506) but improved the sensitivity and recovery of relative amount and proportion of neurons (n = 454) in response to head roll tilts in frontal plane. The neurophysiological mechanisms of AL role in the vestibular compensation were discussed.

UI	MeSH Term	Description	Entries
D007930	Leucine	An essential branched-chain amino acid important for hemoglobin formation.	L-Leucine,Leucine, L-Isomer,L-Isomer Leucine,Leucine, L Isomer
D009043	Motor Activity	Body movements of a human or an animal as a behavioral phenomenon.	Activities, Motor,Activity, Motor,Motor Activities
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
D002415	Cats	The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801)	Felis catus,Felis domesticus,Domestic Cats,Felis domestica,Felis sylvestris catus,Cat,Cat, Domestic,Cats, Domestic,Domestic Cat
D004594	Electrophysiology	The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.
D004856	Postural Balance	A POSTURE in which an ideal body mass distribution is achieved. Postural balance provides the body carriage stability and conditions for normal functions in stationary position or in movement, such as sitting, standing, or walking.	Postural Control,Posture Balance,Posture Control,Posture Equilibrium,Balance, Postural,Musculoskeletal Equilibrium,Postural Equilibrium,Balance, Posture,Control, Postural,Control, Posture,Equilibrium, Musculoskeletal,Equilibrium, Postural,Equilibrium, Posture,Postural Controls,Posture Balances,Posture Controls,Posture Equilibriums
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
D012249	Rhombencephalon	The posterior of the three primitive cerebral vesicles of an embryonic brain. It consists of myelencephalon, metencephalon, and isthmus rhombencephali from which develop the major BRAIN STEM components, such as MEDULLA OBLONGATA from the myelencephalon, CEREBELLUM and PONS from the metencephalon, with the expanded cavity forming the FOURTH VENTRICLE.	Hindbrain,Hind Brain,Brain, Hind,Brains, Hind,Hind Brains,Hindbrains,Rhombencephalons
D012678	Sensation Disorders	Disorders of the special senses (i.e., VISION; HEARING; TASTE; and SMELL) or somatosensory system (i.e., afferent components of the PERIPHERAL NERVOUS SYSTEM).	Sensory Disorders,Special Senses Disorders,Sensation Disorder,Senses Disorder, Special,Senses Disorders, Special,Sensory Disorder,Special Senses Disorder
D014725	Vestibular Nerve	The vestibular part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). The vestibular nerve fibers arise from neurons of Scarpa's ganglion and project peripherally to vestibular hair cells and centrally to the VESTIBULAR NUCLEI of the BRAIN STEM. These fibers mediate the sense of balance and head position.	Scarpa's Ganglion,Ganglion, Scarpa's,Nerve, Vestibular,Nerves, Vestibular,Scarpa Ganglion,Scarpas Ganglion,Vestibular Nerves