Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P01185 (vasopressin)
 23,126 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The rostral parts of the cephalic neural plate and neural crest of mice, stage Theiler 12, were prepared and cultured. At that stage of development they exclusively consist of proliferative ventricular cells, which do not yet display vimentin and neurofilament immunoreactivity. 3H-thymidine autoradiography showed that the progenitor cells of neurons became postmitotic as soon as they were taken into culture. The neurofilament protein (kD 68) was immunocytochemically demonstrable from day 2 in culture, while immunoreactivity to vimentin was never observed. The neurons, prematurely developed from the neuroepithelium of stage Theiler 12-embryos, were identified by their histological and immunocytochemical properties. They gave distinct patterns of immunoreactivity to neuropeptides and anti-serotonin antibodies. Anti-serotonin and anti-somatostatin antibodies reacted from the 3rd day of culture. Antibodies against ACTH, luliberin, substance P and vasopressin gave positive reactions at day 7. Two classes of neurons, the serotonin and the large substance P-immunoreactive ones, were recognized by both immunoreactivity and morphology. The serotonin immunoreactive neurons usually were of a multipolar shape and had a long, varicose axon that was heavily stained, particularly at its distal third. The perikarya appeared in limited areas of the cultured tissue. They grew in the vicinity of each other, but never in densely packed aggregates. The large neurons, reacting heavily with antibodies against substance P and faintly with all the other neuropeptide antibodies applied, were up to 50 micron in diameter and usually occurred in 20-40 cells per preparation of half a neural plate. The results suggest that at least some classes of neurons can develop from the cultured neural plates of stage Th12.
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PMID:Ventricular cells from the mouse neural plate, stage Theiler 12, transform into different neuronal cell classes in vitro. 244 39

Pituicytoma is a rare, poorly characterized tumor of the sella and suprasellar region that is distinct morphologically from other local tumors and is thought to be derived from neurohypophyseal pituicytes. Clinical data, neuroimaging studies, and microsections were reviewed from nine such low-grade gliomas. Immunostains for glial, neuronal, and proliferation markers were performed on all nine tumors and six control neurohypophyses. Three tumors were studied ultrastructurally. Six men and three women, age 30 to 83 years (mean, 48 years), presented with visual symptoms, headache, or hypopituitarism. Magnetic resonance images showed solid, discrete, contrast-enhancing masses, four within the sella and five in the suprasellar space. The tumors consisted of sheets and/or fascicles of plump spindle cells with slightly fibrillar cytoplasm and slightly pleomorphic, oval-to-elongate nuclei with pinpoint nucleoli. Extracellular mucin was prominent in one tumor. Rosenthal fibers, granular bodies, and Herring bodies (granular axonal dilatations characteristic of the normal neurohypophysis) were lacking. Mitoses were rare or absent. MIB-1 labeling indices were low (0.5-2%). Tumor cells were strongly reactive for vimentin and S-100 protein, variably positive for glial fibrillary acidic protein, and nonreactive for synaptophysin and neurofilament protein. Cytoplasm varied in electron density and contained intermediate filaments. Neither meningothelial nor ependymal features were noted. Two tumors recurred at 20 and 26 months after subtotal resection, but none of the six completely resected tumors have done so. Pituicytomas are discrete, largely noninfiltrative low-grade gliomas of the sellar region that occur in adults. Their histologic appearance is distinct from pilocytic and ordinary, infiltrative astrocytomas. The distinction between pituicytoma and normal neurohypophysis is aided by the latter's content of axons, Herring bodies, and perivascular anucleate zones rich in axonal terminations. Although curable by total excision, subtotal resection can be associated with recurrence.
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PMID:Pituicytoma: a distinctive low-grade glioma of the neurohypophysis. 1071 49

The cyto- and chemoarchitecture of the human paraventricular hypothalamic nucleus (Pa) was studied with the aid of three-dimensional computer reconstruction. The adult human Pa is a vertically elongated structure that abuts the wall of the third ventricle (3V) medially and is indented dorsolaterally by the descending fornix. Chemoarchitecture revealed the following five subnuclei in the human Pa. The most prominent of these is the magnocellular subnucleus (PaM) occupying the ventrolateral quadrant of the Pa and comprised of a concentration of large arginin-vasopressin (AVP)- and acetylcholinesterase (AChE)-positive cells, and small calbindin (Cb)-positive neurons. Rostrally, the PaM is succeeded by the small anterior parvicellular subnucleus (PaAP), which contains small AChE-, AVP- and tyrosin hydroxylase (TH)-positive cells. Dorsal to the PaM is found the dorsal subnucleus (PaD), containing large spindle-shaped TH-, oxytocin (OXY)-, and AChE-positive cells, as well as a population of small Cb-positive neurons. Abutting the wall of the 3V and medial to PaM and PaD is the parvicellular subnucleus (PaP). The PaP contains small cells immunoreactive for corticotropin-releasing factor (CRF), neuromedin K receptor (NK3), and nonphosphorylated neurofilament protein (SMI32). The posterior subnucleus (PaPo) is situated posterior to the descending column of the fornix; it replaces all above-mentioned subdivisions caudally, and is a chemoarchitectonic amalgam that includes dispersed large AChE-, OXY-, AVP- and TH-positive cells, as well as small NK3-, CRF-, SMI32- and Cb-immunoreactive neurons. The present findings suggest that the human PaM and PaD are homologues to the magnocellular subnuclei of the rat Pa, whereas the human PaP and PaPo correspond to the rat medial parvicellular and posterior subnuclei, respectively.
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PMID:Organization of the human paraventricular hypothalamic nucleus. 1086 60

Vasopressin and oxytocin mRNAs, which are normally translated in the perikarya of magnocellular neurons, have recently been demonstrated to be also present in axons and nerve terminals which are located in the posterior pituitary. The physiological significance of this observation has not yet been resolved. In order to gain further insight into the function and plasticity of the peptidergic neuron the question was addressed whether axonal localization is a unique feature of the above-mentioned transcripts. Biochemical evidence is presented that magnocellular axons and nerve terminals also contain mRNA species encoding a member of the neurofilament protein family and the prodynorphin precursor. These data imply that axons may harbour a variety of additional protein-encoding transcripts. Furthermore, it is shown that in the mutant (Brattleboro) rat, which lacks detectable levels of vasopressin but which still transcribes the corresponding gene, axonal vasopressin but not oxytocin mRNA contents are dramatically reduced. Most likely, vasopressin transcripts are absent from the nerve terminals as a consequence of the impaired precursor biosynthesis in the cytoplasm of the mutant rat.
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PMID:Diversity of mRNAs in the Axonal Compartment of Peptidergic Neurons in the Rat. 1210 10

We have studied the organization of the hypothalamus in an Australian diprotodontid metatherian mammal, the wallaby ( Macropus eugenii), using cytoarchitectural, histochemical and immunohistochemical techniques. Coronal sections of adult brains were processed for Nissl staining, histochemical reactivity (cytochrome oxidase, nicotinamide adenine dinucleotide phosphate diaphorase and acetylcholinesterase) and immunohistochemistry (antibodies to tyrosine hydroxylase, calbindin, calretinin, non-phosphorylated neurofilament protein, oxytocin and vasopressin). The distribution of immunoreactive neurons for these substances was mapped with the aid of a computer-linked microscope. In general, the wallaby hypothalamus showed a similar nuclear organization to that seen in rodents. The paraventricular nucleus could be divided into several subdivisions based on the different cellular parcellation, similar to that described in rodents. The ventromedial hypothalamic nucleus had cell-sparse dorsomedial and cell-dense ventrolateral subdivisions as seen in eutheria, suggesting a similar functional compartmentalization in all theria. The positions of tyrosine hydroxylase-positive neurons in the wallaby hypothalamus were also similar to those in eutheria. Oxytocin and vasopressinergic neurons were found in all the same major nuclear groups as seen in eutheria, although a nucleus circularis could not be identified. The general similarities between wallaby and eutherian hypothalamus indicate that the basic chemo- and cytoarchitectural features of the hypothalamus are common to eutheria and metatheria and validate the use of the wallaby as a mammalian model of wide applicability in investigations of hypothalamic functional development.
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PMID:Cyto- and chemoarchitecture of the hypothalamus of a wallaby ( Macropus eugenii) with special emphasis on oxytocin and vasopressinergic neurons. 1451 76