Biomaterial Database

[Immunocytochemical characterization of neurosecretory systems producing mesotocin and vasotocin in the brain of several Lacertidae]. 1981

N Bons, and N Pérézi

Using immunofluorescent techniques vasotocin (VT) and mesotocin (MT) neurosecretory systems were identified in the brain of Lacertidae: one european species and of two south-algerian species. In the 3 species MT and VT was shown to be synthetized in specific neurons located in the anterior preoptic area (POA), the supraoptic (SON) and in the paraventricular (PVN) nuclei. The axons originating in SON and PVN were ending either in the external zone of the rostral median eminence (ME) near to the adenohypophysial portal vessels, or in the neural lobe. In Lacerta muralis the neurosecretory axons of the POA terminated in the vicinity of the vascular organ of the lamina terminalis (OVLT), while in the two desertic species several additional fibers extended more rostrally toward the olfactory peduncle (PO). A short exposure to cold (+ 4 degrees C) of some specimens of Lacerta muralis induced a differential response in the dorsal and ventral parts of the NPV, respectively. Whereas the dorsal part remained unchanged, the ventral part, instead appeared then of essentially composed of small neurons void of secretory granules. Cold exposure also led to a marked accumulation of both MT and VT in the internal zone of the ME, and of VT only, in the external ME zone. On the other hand, a conspicuous amount of MT appeared in adenohypophysial cells.

UI	MeSH Term	Description	Entries
D009489	Neurosecretion	The production and release of substances such as NEUROTRANSMITTERS or HORMONES from nerve cells.	Neurosecretions
D010121	Oxytocin	A nonapeptide hormone released from the neurohypophysis (PITUITARY GLAND, POSTERIOR). It differs from VASOPRESSIN by two amino acids at residues 3 and 8. Oxytocin acts on SMOOTH MUSCLE CELLS, such as causing UTERINE CONTRACTIONS and MILK EJECTION.	Ocytocin,Pitocin,Syntocinon
D001923	Brain Chemistry	Changes in the amounts of various chemicals (neurotransmitters, receptors, enzymes, and other metabolites) specific to the area of the central nervous system contained within the head. These are monitored over time, during sensory stimulation, or under different disease states.	Chemistry, Brain,Brain Chemistries,Chemistries, Brain
D003080	Cold Temperature	An absence of warmth or heat or a temperature notably below an accustomed norm.	Cold,Cold Temperatures,Temperature, Cold,Temperatures, Cold
D005455	Fluorescent Antibody Technique	Test for tissue antigen using either a direct method, by conjugation of antibody with fluorescent dye (FLUORESCENT ANTIBODY TECHNIQUE, DIRECT) or an indirect method, by formation of antigen-antibody complex which is then labeled with fluorescein-conjugated anti-immunoglobulin antibody (FLUORESCENT ANTIBODY TECHNIQUE, INDIRECT). The tissue is then examined by fluorescence microscopy.	Antinuclear Antibody Test, Fluorescent,Coon's Technique,Fluorescent Antinuclear Antibody Test,Fluorescent Protein Tracing,Immunofluorescence Technique,Coon's Technic,Fluorescent Antibody Technic,Immunofluorescence,Immunofluorescence Technic,Antibody Technic, Fluorescent,Antibody Technics, Fluorescent,Antibody Technique, Fluorescent,Antibody Techniques, Fluorescent,Coon Technic,Coon Technique,Coons Technic,Coons Technique,Fluorescent Antibody Technics,Fluorescent Antibody Techniques,Fluorescent Protein Tracings,Immunofluorescence Technics,Immunofluorescence Techniques,Protein Tracing, Fluorescent,Protein Tracings, Fluorescent,Technic, Coon's,Technic, Fluorescent Antibody,Technic, Immunofluorescence,Technics, Fluorescent Antibody,Technics, Immunofluorescence,Technique, Coon's,Technique, Fluorescent Antibody,Technique, Immunofluorescence,Techniques, Fluorescent Antibody,Techniques, Immunofluorescence,Tracing, Fluorescent Protein,Tracings, Fluorescent Protein
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
D001717	Birds	Warm-blooded VERTEBRATES possessing FEATHERS and belonging to the class Aves.	Aves,Bird
D013045	Species Specificity	The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.	Species Specificities,Specificities, Species,Specificity, Species
D014668	Vasotocin	A nonapeptide that contains the ring of OXYTOCIN and the side chain of ARG-VASOPRESSIN with the latter determining the specific recognition of hormone receptors. Vasotocin is the non-mammalian vasopressin-like hormone or antidiuretic hormone regulating water and salt metabolism.	3-Isoleucyl Vasopressin,Arginine Oxytocin,Arginine Vasotocin,Argiprestocin,Vasopressin, Isoleucyl,Vasopressin, Non-Mammalian,(8-Arginine)Oxytocin,Argiprestocine,3 Isoleucyl Vasopressin,Isoleucyl Vasopressin,Non-Mammalian Vasopressin,Oxytocin, Arginine,Vasopressin, 3-Isoleucyl,Vasopressin, Non Mammalian,Vasotocin, Arginine