[Projecting from the superior olivary complex to the inner ear in the cat: a retrograde fluorescent labelling study]. 2009

Jing-Jia Li, and Ping-An Wu, and Xiao-Li Zhang, and Yue-Hong Chen, and Xin-Ming Yang
Department of Otorhinolaryngology Head and Neck Surgery, Institute of Otology, Xiangya Second Hospital, Central South University, Changsha 410011, China.

OBJECTIVE To investigate the distribution and projective feature of cat olivocochlear neurons. METHODS Eleven adult cats were divided into two groups randomly. The experimental group of eight cats was injected of 1% cholera toxin B (CTB) to the left cochlea, while injected of 5% fluoro gold (FG) to the right cochlea. The control group of three cats was injected of saline to bilateral cochlea. After a survival time of 7 days, serial frozen sections were cut in the cat brainstem. All the sections were processed by immunofluorescent procedure for CTB and FG, and the labeled olivocochlear neurons were observed by fluorescent microscope. RESULTS In the experimental group, the mean total of olivocochlear neurons labeled by CTB and FG was 3210 +/- 168, including lateral olivocochlear neurons (LOC, 2298 +/- 120) and medial olivocochlear neurons (MOC, 913 +/- 64). The labeled neurons were divided into three different types according to their feature of projection: neurons which only projected to the ipsilateral cochlea, neurons which only projected to the contralateral cochlea, and double-labeled neurons which projected both to the ipsilateral and contralateral cochlea, but the double-labeled neurons comprised 3.9% and 15.1% in the LOC and MOC system respectively. No labeled neurons were found in the control group. CONCLUSIONS There are three types of neurons in the cat olivocochlear system. The neurons which projected to the bilateral cochlea may distribute both in the LOC and MOC system.

UI MeSH Term Description Entries
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
D009847 Olivary Nucleus A brainstem nuclear complex. in the hindbrain, also referred to as the olivary body. The olivary nuclear complex is a part of the MEDULLA OBLONGATA and the PONTINE TEGMENTUM. It is involved with motor control and is a major source of sensory input to the CEREBELLUM. Basal Nucleus, Olivary,Nucleus Basalis, Olivary,Olivary Body,Olivary Complex,Olivary Nuclei,Complex, Olivary,Nucleus, Olivary,Nucleus, Olivary Basal,Olivary Basal Nucleus,Olivary Bodies
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
D005456 Fluorescent Dyes Chemicals that emit light after excitation by light. The wave length of the emitted light is usually longer than that of the incident light. Fluorochromes are substances that cause fluorescence in other substances, i.e., dyes used to mark or label other compounds with fluorescent tags. Flourescent Agent,Fluorescent Dye,Fluorescent Probe,Fluorescent Probes,Fluorochrome,Fluorochromes,Fluorogenic Substrates,Fluorescence Agents,Fluorescent Agents,Fluorogenic Substrate,Agents, Fluorescence,Agents, Fluorescent,Dyes, Fluorescent,Probes, Fluorescent,Substrates, Fluorogenic
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
D001306 Auditory Pathways NEURAL PATHWAYS and connections within the CENTRAL NERVOUS SYSTEM, beginning at the hair cells of the ORGAN OF CORTI, continuing along the eighth cranial nerve, and terminating at the AUDITORY CORTEX. Auditory Pathway,Pathway, Auditory,Pathways, Auditory
D015415 Biomarkers Measurable and quantifiable biological parameters (e.g., specific enzyme concentration, specific hormone concentration, specific gene phenotype distribution in a population, presence of biological substances) which serve as indices for health- and physiology-related assessments, such as disease risk, psychiatric disorders, ENVIRONMENTAL EXPOSURE and its effects, disease diagnosis; METABOLIC PROCESSES; SUBSTANCE ABUSE; PREGNANCY; cell line development; EPIDEMIOLOGIC STUDIES; etc. Biochemical Markers,Biological Markers,Biomarker,Clinical Markers,Immunologic Markers,Laboratory Markers,Markers, Biochemical,Markers, Biological,Markers, Clinical,Markers, Immunologic,Markers, Laboratory,Markers, Serum,Markers, Surrogate,Markers, Viral,Serum Markers,Surrogate Markers,Viral Markers,Biochemical Marker,Biologic Marker,Biologic Markers,Clinical Marker,Immune Marker,Immune Markers,Immunologic Marker,Laboratory Marker,Marker, Biochemical,Marker, Biological,Marker, Clinical,Marker, Immunologic,Marker, Laboratory,Marker, Serum,Marker, Surrogate,Serum Marker,Surrogate End Point,Surrogate End Points,Surrogate Endpoint,Surrogate Endpoints,Surrogate Marker,Viral Marker,Biological Marker,End Point, Surrogate,End Points, Surrogate,Endpoint, Surrogate,Endpoints, Surrogate,Marker, Biologic,Marker, Immune,Marker, Viral,Markers, Biologic,Markers, Immune
D017626 Cochlear Nucleus The brain stem nucleus that receives the central input from the cochlear nerve. The cochlear nucleus is located lateral and dorsolateral to the inferior cerebellar peduncles and is functionally divided into dorsal and ventral parts. It is tonotopically organized, performs the first stage of central auditory processing, and projects (directly or indirectly) to higher auditory areas including the superior olivary nuclei, the medial geniculi, the inferior colliculi, and the auditory cortex. Cochlear Nuclei,Nuclei, Cochlear,Nucleus, Cochlear

Related Publications

Jing-Jia Li, and Ping-An Wu, and Xiao-Li Zhang, and Yue-Hong Chen, and Xin-Ming Yang
September 1980, Nippon Ganka Gakkai zasshi,
Jing-Jia Li, and Ping-An Wu, and Xiao-Li Zhang, and Yue-Hong Chen, and Xin-Ming Yang
May 1987, The Journal of comparative neurology,
Jing-Jia Li, and Ping-An Wu, and Xiao-Li Zhang, and Yue-Hong Chen, and Xin-Ming Yang
September 1964, Journal of neurophysiology,
Jing-Jia Li, and Ping-An Wu, and Xiao-Li Zhang, and Yue-Hong Chen, and Xin-Ming Yang
January 1993, Histology and histopathology,
Jing-Jia Li, and Ping-An Wu, and Xiao-Li Zhang, and Yue-Hong Chen, and Xin-Ming Yang
November 2000, Microscopy research and technique,
Jing-Jia Li, and Ping-An Wu, and Xiao-Li Zhang, and Yue-Hong Chen, and Xin-Ming Yang
June 1968, The Japanese journal of physiology,
Jing-Jia Li, and Ping-An Wu, and Xiao-Li Zhang, and Yue-Hong Chen, and Xin-Ming Yang
January 1998, ORL; journal for oto-rhino-laryngology and its related specialties,
Jing-Jia Li, and Ping-An Wu, and Xiao-Li Zhang, and Yue-Hong Chen, and Xin-Ming Yang
May 1978, Experimental brain research,
Jing-Jia Li, and Ping-An Wu, and Xiao-Li Zhang, and Yue-Hong Chen, and Xin-Ming Yang
January 1983, Experimental brain research,
Jing-Jia Li, and Ping-An Wu, and Xiao-Li Zhang, and Yue-Hong Chen, and Xin-Ming Yang
August 1999, Hearing research,
Copied contents to your clipboard!