Evidence for the co-expression of oxytocin and vasopressin messenger ribonucleic acids in magnocellular neurosecretory cells: simultaneous demonstration of two neurohypophysin messenger ribonucleic acids by hybridization histochemistry.
A novel enzyme-labelled oligonucleotide probe specific for oxytocin messenger ribonucleic acid (mRNA) and a radiolabelled oligonucleotide probe specific for vasopressin mRNA were used together to visualize both oxytocin and vasopressin mRNA's in hypothalamus sections from salt loaded (2% saline) rats. The results demonstrate that the majority of magnocellular neurons contain only oxytocin or vasopressin mRNA, however a small number of neurons, 1% to 2%, contained both oxytocin and vasopressin transcripts.
Kiyama
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MRC Group, AFRC Institute of Animal Physiology and Genetics Research, Babraham, Cambridge CB2 4AT, UK.
Emson
P C
PC