Enhanced susceptibility of mouse embryos heterozygous for oligosyndactyly (Os/+) to mitomycin C-induced skeletal abnormalities

Teratology ◽  
1987 ◽  
Vol 35 (2) ◽  
pp. 261-265 ◽  
Author(s):  
Patricia A. Moreno ◽  
Charles J. Epstein
Development ◽  
1981 ◽  
Vol 64 (1) ◽  
pp. 133-147
Author(s):  
P. P. L. Tam ◽  
M. H. L. Snow

Primitive-streak-stage mouse embryos were treated with Mitomycin C injected intraperitoneally into pregnant females at 6·75–7·0 days post coitum. The newborn mice developed poorly and mortality was high during the suckling period. Many weaned survivors showed impaired fertility and poor breeding performance. Histological examination revealed a paucity of germ cells in the adult gonads. The deficiency was mainly caused by a severe reduction of the primordial germ cell population in early embryonic life, which was not fully compensated for during the compensatory growth phase of the Mitomycin C-treated embryo. Also contributing to such impaired fertility were retarded migration of the primordial germ cells into the genital ridges, poor development of the foetal gonad and secondary loss of the germ cells during gametogenesis in males.


Development ◽  
1983 ◽  
Vol 73 (1) ◽  
pp. 135-149
Author(s):  
B. C. Gregg ◽  
M. H. L. Snow

Primitive-streak and early-organogenesis-stage mouse embryos were treated with Mitomycin C (MMC) by intraperitoneal injection of pregnant females. Skeletal preparations of newborn pups were made and the axial skeleton examined. The treated animals showed a high incidence of:- (1) changedvertebral numers, (2) malformation of the vertebral column, (3) changed rib numbers and (4) rib abnormalities. These skeletal disturbances tend to be located more posteriorly with later MMC treatment. There is regional variation in the susceptibility of vertebrae to abnormal development. Extra elements may occur in any region of the spinal column and several unique combinations of numbers are reported. The possible origin of these abnormalities and their similarity to some human syndromes is discussed. It is suggested that they may be the consequence of altered growth profiles in interacting tissues during the restorative growth following MMC treatment.


1974 ◽  
Vol 25 (2) ◽  
pp. 93-100 ◽  
Author(s):  
Margret Bartsch-Sandhoff

Author(s):  
К.Л. Плигина ◽  
А.К. Жанатаев ◽  
Е.А. Анисина ◽  
Н.О. Даугель-Дауге ◽  
А.Д. Дурнев

Разработана методология оценки первичных повреждений ДНК в одно- и двухклеточных зародышах мышей методом ДНК-комет. Применимость разработанной методологии для оценки генотоксичности в зародышевых клетках in vivo и in vitro подтверждена в экспериментах с модельными генотоксикантами метилметансульфонатом, диоксидином, этопозидом и митомицином С. A methodology for evaluating DNA damage in one - and two-cell mouse embryos using the comet assay has been developed. The applicability of the developed methodology for assessing genotoxicity in vivo and in vitro was confirmed in experiments with model genotoxicants - methyl methanesulfonate, dioxidine, etoposide and mitomycin C.


Author(s):  
D. G. Chase ◽  
W. Winters ◽  
L. Piko

Although the outlines of human adenovirus entry and uncoating in HeLa cells has been clarified in recent electron microscope studies, several details remain unclear or controversial. Furthermore, morphological features of early interactions of human adenovirus with non-permissive mouse cells have not been extensively documented. In the course of studies on the effects of human adenoviruses type 5 (AD-5) and type 12 on cultured preimplantation mouse embryos we have examined virus attachment, entry and uncoating. Here we present the ultrastructural findings for AD-5.AD-5 was grown in HeLa cells and purified by successive velocity gradient and equilibrium density gradient centrifugations in CsCl. After dialysis against PBS, virus was sedimented and resuspended in embryo culture medium. Embryos were placed in culture at the 2-cell stage in Brinster's medium.


Author(s):  
Linda C. Hassinger ◽  
James E. Crandall

We have begun to look directly at small numbers of afferent axons to early generated neurons that form the preplate in the developing mouse cortex. The carbocyanine dye Dil (1’1, dioctadecyl-3,3,3’3’-tetramethyl-indocarbocyanine) has proved especially useful for this goal. DiI labels axons and their terminals with greater sensitivity and without some of the disadvantages of axon filling with HRP. The increased sensitivity provided by labeling embryonic axons with DiI has given us new insights into the development of cortical afferents. For instance, we reported originally that afferents from the thalamus were present below the cortex as early as embryonic day 15 (E15) based on HRP injections into mouse embryos. By using DiI placements into the thalamus in aldehyde-fixed brains, we now know that thalamic fibers reach the cortex 24 hrs earlier.


Author(s):  
Thomas T.F. Huang ◽  
Patricia G. Calarco

The stage specific appearance of a retravirus, termed the Intracisternal A particle (IAP) is a normal feature of early preimplantation development. To date, all feral and laboratory strains of Mus musculus and even Asian species such as Mus cervicolor and Mus pahari express the particles during the 2-8 cell stages. IAP form by budding into the endoplasmic reticulum and appear singly or as groups of donut-shaped particles within the cisternae (fig. 1). IAP are also produced in large numbers in several neoplastic cells such as certain plasmacytomas and rhabdomyosarcomas. The role of IAP, either in normal development or in neoplastic behavior, is unknown.


2007 ◽  
Vol 177 (4S) ◽  
pp. 519-519
Author(s):  
Ofer Nativ ◽  
Renzo Colombo ◽  
Dov Engelstein ◽  
Ofer N. Gofrit ◽  
Thomas Akkad ◽  
...  

2006 ◽  
Vol 175 (4S) ◽  
pp. 268-269 ◽  
Author(s):  
Jessie L. Au ◽  
Robert A. Badalament ◽  
M. Guillaume Wientjes ◽  
Donn C. Young ◽  
Tong Shen ◽  
...  

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