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Changes in the hypothalamus and ependyma of the third ventricle of the brain in sheep after irradiation and hormone stimulation. 1989

A Staníková, and J Arendarcik, and M Molnárova
Department of Physiology, University of Veterinary Medicine, Kosice.

In the present study the authors focused their attention on the studies of PAS positive mucopolisaccharides in the hypothalamus and ependyma of the third ventricle and on the observation of changes in the volume of cell nuclei of neurons--nucl. supraopticus (NSO), nucl. hypothalamicus ventromedialis (NVM) and nucl. tuberomammillaris (NTM) in sheep after irradiation with 2.46 Gy and hormone stimulation during anestrous. Ageline sponges and serum gonadotropins were used for estrous synchronization and hormone stimulation, respectively. The increased amount of PAS positive substances found in the examined hypothalamic nuclei after irradiation and hormone treatment seem to stimulate the function of the hypothalamic structures. The results of caryometric analysis in spring sheep also confirm this view. Administration of hormones in combination with irradiation results in increased number of ependyma cells and desquamation of the surface layers.

UI MeSH Term Description Entries
D007031 Hypothalamus Ventral part of the DIENCEPHALON extending from the region of the OPTIC CHIASM to the caudal border of the MAMMILLARY BODIES and forming the inferior and lateral walls of the THIRD VENTRICLE. Lamina Terminalis,Preoptico-Hypothalamic Area,Area, Preoptico-Hypothalamic,Areas, Preoptico-Hypothalamic,Preoptico Hypothalamic Area,Preoptico-Hypothalamic Areas
D007620 Karyometry Microscopic study of the spacial distribution pattern of CHROMATIN in CELL NUCLEI and CELL NUCLEOLI. Karyometric Analysis,Karyometric Image Analysis,Analyses, Karyometric,Analyses, Karyometric Image,Analysis, Karyometric,Analysis, Karyometric Image,Image Analyses, Karyometric,Image Analysis, Karyometric,Karyometric Analyses,Karyometric Image Analyses
D002467 Cell Nucleus Within a eukaryotic cell, a membrane-limited body which contains chromosomes and one or more nucleoli (CELL NUCLEOLUS). The nuclear membrane consists of a double unit-type membrane which is perforated by a number of pores; the outermost membrane is continuous with the ENDOPLASMIC RETICULUM. A cell may contain more than one nucleus. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed) Cell Nuclei,Nuclei, Cell,Nucleus, Cell
D004805 Ependyma A thin membrane that lines the CEREBRAL VENTRICLES and the central canal of the SPINAL CORD. Ependymas
D005260 Female Females
D006025 Glycosaminoglycans Heteropolysaccharides which contain an N-acetylated hexosamine in a characteristic repeating disaccharide unit. The repeating structure of each disaccharide involves alternate 1,4- and 1,3-linkages consisting of either N-acetylglucosamine (see ACETYLGLUCOSAMINE) or N-acetylgalactosamine (see ACETYLGALACTOSAMINE). Glycosaminoglycan,Mucopolysaccharides
D006064 Gonadotropins, Equine Gonadotropins secreted by the pituitary or the placenta in horses. This term generally refers to the gonadotropins found in the pregnant mare serum, a rich source of equine CHORIONIC GONADOTROPIN; LUTEINIZING HORMONE; and FOLLICLE STIMULATING HORMONE. Unlike that in humans, the equine LUTEINIZING HORMONE, BETA SUBUNIT is identical to the equine choronic gonadotropin, beta. Equine gonadotropins prepared from pregnant mare serum are used in reproductive studies. Pregnant Mare Serum Gonadotropins,PMS Gonadotropins,PMSG (Gonadotropins),Equine Gonadotropins,Gonadotropins, PMS
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
D012756 Sheep Any of the ruminant mammals with curved horns in the genus Ovis, family Bovidae. They possess lachrymal grooves and interdigital glands, which are absent in GOATS. Ovis,Sheep, Dall,Dall Sheep,Ovis dalli

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