---
abstract: 'Ingestion of placenta has previously been shown to enhance opiate-mediated analgesia (measured as tail-flick latency) induced either by morphine injection or by footshock. The present study was designed to test whether placenta ingestion would enhance the partly opiate-mediated analgesia produced by vaginal/cervical stimulation. Nulliparous Sprague-Dawley rats were tested for analgesia, using tail-flick latency, during and after vaginal/cervical stimulation; the tests for vaginal/cervical stimulation-induced analgesia were administered both before and after the rats ate placenta or ground beef. Placenta ingestion, but not beef ingestion. significantly heightened vaginal/cervical stimulation-induced analgesia. A subsequent morphine injection provided evidence that, as in a previous report, placenta ingestion, but not beef ingestion, enhanced morphine-induced analgesia.'
altloc: []
chapter: ~
commentary: ~
commref: ~
confdates: ~
conference: ~
confloc: ~
contact_email: ~
creators_id:
  - kristal@buffalo.edu
  - athompso@RIA.Buffalo.EDU
  - ~
  - ~
creators_name:
  - family: Kristal
    given: Mark B.
    honourific: Dr.
    lineage: ''
  - family: Thompson
    given: Alexis C.
    honourific: ''
    lineage: ''
  - family: Heller
    given: Steve B.
    honourific: ''
    lineage: ''
  - family: Komisaruk
    given: Barry R.
    honourific: Dr.
    lineage: ''
date: 1986
date_type: published
datestamp: 2008-11-02 09:59:45
department: ~
dir: disk0/00/00/62/54
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editors_id: []
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eprint_status: archive
eprintid: 6254
fileinfo: /style/images/fileicons/application_pdf.png;/6254/1/VSIA.pdf
full_text_status: public
importid: ~
institution: ~
isbn: ~
ispublished: pub
issn: ~
item_issues_comment: []
item_issues_count: 0
item_issues_description: []
item_issues_id: []
item_issues_reported_by: []
item_issues_resolved_by: []
item_issues_status: []
item_issues_timestamp: []
item_issues_type: []
keywords: "Placenta, Pain, Opiates, Vaginal stimulation-produced analgesia, Tail-flick test, Afterbirth,\r\nAnalgesia, Parturition, Placentophagia, VSPA, Vaginal/cervical stimulation, POEF"
lastmod: 2011-03-11 08:57:13
latitude: ~
longitude: ~
metadata_visibility: show
note: ~
number: 6
pagerange: 1017-1020
pubdom: TRUE
publication: Physiology & Behavior
publisher: Pergamon Press
refereed: TRUE
referencetext: ~
relation_type: []
relation_uri: []
reportno: ~
rev_number: 26
series: ~
source: ~
status_changed: 2008-11-02 09:59:45
subjects:
  - bio-behav
  - psy-bio
  - physio-psy
  - behav-neuro-sci
succeeds: ~
suggestions: ~
sword_depositor: ~
sword_slug: ~
thesistype: ~
title: "Placenta Ingestion Enhances Analgesia\r\nProduced by Vaginal/Cervical\r\nStimulation in Rats"
type: journalp
userid: 88
volume: 36
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