Maturation of the hypothalamo-neurohypophysial system. I. Localization of neurophysin, oxytocin and vasopressin in the hypothalamus and neural lobe of the developing rat brain.

Choy VJ, Watkins WB

Cell and tissue research1 Mar 1979Cited by 56 (Europe PMC)

PMID436149DOI10.1007/bf00233923PepBankPUB-00436149

Publisher page PubMedAsk about this study

Summary

The text of this summary is not shown here, because the article license does not allow reuse. Read it at the source (opens in a new tab)

Text rights: Publisher copyright. Results still quote short attributed sentences.

Results from this study3

No result from this study comes from a test of the peptide.

Natural levels measured3

These results measure the body's own peptide. Nobody was given the peptide. They are not evidence about taking it. They are left out of key results, evidence counts and charts.

01LabEndogenous levelEx vivo tissueOther
In immunoperoxidase-stained pituitary sections from fetal and neonatal rats, endogenous oxytocin was not detected until 1--2 days after birth.
In plain wordsIn lab tests of rat tissue, the body's own oxytocin was not detected in the pituitary until 1--2 days after birth.
Peptide
Oxytocin
Outcome
Not applicableOxytocin detection in the pituitary
Study
ratn: not reported in source
developing hypothalamo-neurohypophysial system
Outcome group
Endogenous peptide levels · Endocrine and hormones
Source sentences
Summary
Oxytocin was not detected in the pituitary until 1--2 days after birth, in the hypothalamus after 4 days, and in the median eminence after 8 days.
1 context sentence(design, population, supporting numbers)
Summary · context
Sections of the hypothalamus, median eminence and pituitary from fetal and neonatal rats were examined with the immunoperoxidase staining technique and light microscopy. Purified antisera raised against vasopressin and oxytocin, and antisera cross-reactive with rat neurophysin were used to localize…
This result measures the body's own Oxytocin. Nobody was given the peptide. It is not evidence about taking it.
Report a problemFND-0043614901
02LabEndogenous levelEx vivo tissueOther
In immunoperoxidase-stained hypothalamic sections from fetal and neonatal rats, endogenous oxytocin was not detected until after 4 days.
In plain wordsIn lab tests of rat tissue, the body's own oxytocin was not detected in the hypothalamus until after 4 days.
Peptide
Oxytocin
Outcome
Not applicableOxytocin detection in the hypothalamus
Study
ratn: not reported in source
developing hypothalamo-neurohypophysial system
Outcome group
Endogenous peptide levels · Endocrine and hormones
Source sentences
Summary
Oxytocin was not detected in the pituitary until 1--2 days after birth, in the hypothalamus after 4 days, and in the median eminence after 8 days.
1 context sentence(design, population, supporting numbers)
Summary · context
Sections of the hypothalamus, median eminence and pituitary from fetal and neonatal rats were examined with the immunoperoxidase staining technique and light microscopy. Purified antisera raised against vasopressin and oxytocin, and antisera cross-reactive with rat neurophysin were used to localize…
This result measures the body's own Oxytocin. Nobody was given the peptide. It is not evidence about taking it.
Report a problemFND-0043614902
03LabEndogenous levelEx vivo tissueOther
In immunoperoxidase-stained median eminence sections from fetal and neonatal rats, endogenous oxytocin was not detected until after 8 days.
In plain wordsIn lab tests of rat tissue, the body's own oxytocin was not detected in the median eminence until after 8 days.
Peptide
Oxytocin
Outcome
Not applicableOxytocin detection in the median eminence
Study
ratn: not reported in source
developing hypothalamo-neurohypophysial system
Outcome group
Endogenous peptide levels · Endocrine and hormones
Source sentences
Summary
Oxytocin was not detected in the pituitary until 1--2 days after birth, in the hypothalamus after 4 days, and in the median eminence after 8 days.
1 context sentence(design, population, supporting numbers)
Summary · context
Sections of the hypothalamus, median eminence and pituitary from fetal and neonatal rats were examined with the immunoperoxidase staining technique and light microscopy. Purified antisera raised against vasopressin and oxytocin, and antisera cross-reactive with rat neurophysin were used to localize…
This result measures the body's own Oxytocin. Nobody was given the peptide. It is not evidence about taking it.
Report a problemFND-0043614903

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

Version history

PepBank keeps every version of the data on this study. Status changes from Retraction Watch, Europe PMC and Crossref are listed with their source.

Version 2Current
12 Oct 2026, 11:11 UTC
Study results updated
Version 1
9 Oct 2026, 02:53 UTC
First added · source update from Europe PMC

Subjects

Terms as the source lists them.

Publication types

MeSH terms

PepBank is a research reference. Talk to a doctor before you use any peptide.