Identification by RT-PCR and immunolocalization of arginine vasopressin in rat pancreas.
Diabetes Metab
; 25(6): 498-501, 1999 Dec.
Article
in En
| MEDLINE
| ID: mdl-10633874
ABSTRACT
Arginine vasopressin (AVP), a hormone of the hypothalamic pituitary axis, has been described in several peripheral tissues, including pancreas. To demonstrate the ectopic synthesis of AVP at the pancreatic level, we explored the expression of the AVP-neurophysin-II (AVP-NP-II) precursor gene by reverse-transcriptase polymerase chain reaction (RT-PCR) and sequencing and attempted to localise the peptide by immunocytochemistry in normal rat pancreas. Primers designed at the 3' and 5' ends of the AVP-NP-II gene, RT-PCR, and automatic sequencing of PCR products from rat pancreas revealed transcripts of the predicted size with an identical sequence to those from the hypothalamus. In addition, AVP antiserum revealed immunoreactive material of perivascular localisation. These data provide the first direct evidence for the presence of AVP transcripts in rat pancreatic tissue, whereas concurrent immunodetection of this hormone offers further support for the potential role of ectopic AVP in local regulation of the secretory activity of the pancreas.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pancreas
/
Transcription, Genetic
/
Arginine Vasopressin
Type of study:
Diagnostic_studies
Limits:
Animals
Language:
En
Journal:
Diabetes Metab
Journal subject:
ENDOCRINOLOGIA
/
METABOLISMO
Year:
1999
Type:
Article
Affiliation country:
France