Persistent Link:
http://hdl.handle.net/10150/277034
Title:
Early embryos of dams of heat stress
Author:
Johnsen, Suzanne Louise, 1960-
Issue Date:
1989
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Increased environmental heat causes early embryonic death before implantation. This study was designed to examine tissues of dams exposed to environmental temperatures of 36°C and to examine 72 hour old embryos from these dams. Results showed adult mice exposed to heat stress had significant changes in liver morphology with hepatocyte swelling and vacuolization of the cytoplasm, organelles in the hepatocytes were displaced next to the cell membrane. After 48 hours of recovery from heat stress, liver morphology appeared normal. Embryos from heat stressed dams had delayed development indicated by increased 2alpha helical cellular inclusions. Embryos responded differently to different fixation techniques indicated permeability changes in either the zona pellucida or cellular membranes. Litter size or pup survivability from heat stressed dams allowed to recover indicated changes seen at this point were reversible
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Heat -- Physiological effect.; Fetus -- Growth.; Fetal death.; Mice as laboratory animals.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Animal Physiology
Degree Grantor:
University of Arizona
Advisor:
Shively, James N.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleEarly embryos of dams of heat stressen_US
dc.creatorJohnsen, Suzanne Louise, 1960-en_US
dc.contributor.authorJohnsen, Suzanne Louise, 1960-en_US
dc.date.issued1989en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractIncreased environmental heat causes early embryonic death before implantation. This study was designed to examine tissues of dams exposed to environmental temperatures of 36°C and to examine 72 hour old embryos from these dams. Results showed adult mice exposed to heat stress had significant changes in liver morphology with hepatocyte swelling and vacuolization of the cytoplasm, organelles in the hepatocytes were displaced next to the cell membrane. After 48 hours of recovery from heat stress, liver morphology appeared normal. Embryos from heat stressed dams had delayed development indicated by increased 2alpha helical cellular inclusions. Embryos responded differently to different fixation techniques indicated permeability changes in either the zona pellucida or cellular membranes. Litter size or pup survivability from heat stressed dams allowed to recover indicated changes seen at this point were reversibleen_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectHeat -- Physiological effect.en_US
dc.subjectFetus -- Growth.en_US
dc.subjectFetal death.en_US
dc.subjectMice as laboratory animals.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineAnimal Physiologyen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorShively, James N.en_US
dc.identifier.proquest1337430en_US
dc.identifier.oclc22540128en_US
dc.identifier.bibrecord.b17452594en_US
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