Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 30 (1974), S. 11-24 
    ISSN: 1432-0533
    Keywords: Ataxia ; Rabbit ; Degeneration ; Cochlear Nuclei ; Electron Microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This hereditary animal ataxia is selective in its sites of involvement within the nervous system, which include principally the central cerebellar, vestibular and cochlear nuclei. Ultrastructural detail has been described for central cerebellar and vestibular nuclei. Herein the cochlear complex of 18 rabbits with this ataxic condition (ax/ax from the strain AX of the Jackson Laboratory) have been examined. The gene is a lethal one, but the animals were used before they became moribund and between 7 and 57 days after the onset of symptoms. By light microscopy nine cell types (Osen, 1969a, b; 1970) have been identified in the cochlear nuclei of the cat. That distribution can also be identified in electron micrographs of rabbit cochlear nuclei, providing there is a singular opportunity to compare cellular vulnerabilities within the ataxic condition, and establish the principal features of associated neuropil alterations. The cochlear nuclei, cerebellar cortex and central nuclei, and the vestibular nuclei, arise from the ependyma of the rhombic lip of the fourth ventricle, making them close allies in their genetic origins. Pathological alterations were evident in scattered neurons from all nuclear sources by 7–15 days following symptom onset. At 15 days the number of altered neurons evident in electronmicrographs had increased markedly, cells becoming involved at a more rapid pace than those already affected could be removed. Much glycogen is evident from 7 days onwards in both neuropil and neurons. It occurs in considerable amounts in astrocytic processes and less abundantly in endbulbs and somata. By 20 to 25 days spongioform changes in neuropil are prominent, and thereafter the extracellular spaces coalesce to produce a lacunar appearance showing little glycogen. It would appear, therefore, that all neuron types, the endbulbs, and the astrocytic processes are markedly involved simultaneously in the spongioform transformation which features this type of ataxia. Involvement of cochlear nuclei only differs in pathological detail from that found at the other involved sites, and the differences seen relate principally to the architectonics of the nuclei, including size and density of the packing of contained elements.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 20 (1970), S. 214-221 
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei Kaninchen aus drei verschiedenen Stämmen wurden im Blut von 16 Kaninchen, denen 60 Tage lang 0,5 g Cholesterin verabreicht worden war, die Serumwerte für Cholesterin und β-Lipoproteine und die Leukozyten- und Basophilenzahlen gegenüber denjenigen bei 18 Kontrolltieren erhöht gefunden. Sowohl die behandelten als auch die unbehandelten Kaninchen eines hochgradig inzüchtigen holländischen Stammes zeigten durchschnittlich dreimal so hohe Basophilenzahlen wie die Tiere aus zwei teilweise inzüchtigen neuseeländischen Stämmen. Unter den behandelten Kaninchen zeigte die holländische Gruppe eine signifikant hohe positive Korrelation zwischen Basophilenzahlen und β-Lipoproteinwerten; ihr mittlerer β-Lipoproteinwert war 2,5 bis 4,3mal so groß wie die Mittelwerte der anderen Stämme und fast achtmal so groß wie derjenige der eigenen Kontrolltiere. Histologische Schnittpräparate der Aorta von 18 behandelten Kaninchen zeigten, daß der holländische Stamm eine signifikant größere Zahl von basophilen Zellen im Gewebe der Aorta aufwies als die anderen. Weiterhin zeigten sie, daß keines der holländischen Kaninchen eine Atherosklerose entwickelt hatte, was dagegen bei 9 der 14 anderen Tiere der Fall war. Andrerseits stellte man mit einer Ausnahme bei allen 11 holländischen Kaninchen einschließlich von 7 Kontrolltieren eine Mediasklerose fest, die nur bei 2 der 14 anderen Tiere beobachtet wurde. Es wurde entdeckt, daß die Verteilung der basophilen Zellen im Gewebe der Kaninchenwerte derjenigen der Mastzellen in menschlichen Aorten verblüffend ähnelt.
    Notes: Summary In rabbits of three different strains, more cholesterol, β-lipoprotein, white cells, and basophils were found in the blood of 16 rabbits fed 0.5 g of cholesterol daily for 60 days than in the blood of 18 controls. Both treated and untreated rabbits of a highly inbred Dutch strain averaged about three times as many basophils as the animals in two partially inbred New Zealand strains. Among treated rabbits, the Dutch group showed a significant positive correlation between basophils and β-lipoprotein and its β-lipoprotein mean was 2.5 to 4.3 times as large as the other strains' means and nearly eight times that of its own controls. Aortic sections from 18 treated rabbits showed that the Dutch strain had significantly more basophils in aortic tissue than the others; also, that no Dutch rabbit had developed atherosclerosis, but nine of the 14 others had. However, all but one of 11 Dutch rabbits, including seven controls, were found to have medial sclerosis, which was observed in only two of the 14 other animals. The distribution of basophils in rabbit aortic tissue was discovered to be strikingly similar to that of mast cells in human aortas.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Behavior genetics 13 (1983), S. 205-211 
    ISSN: 1573-3297
    Keywords: audiogenic seizures (AGS) ; delta-9-tetrahydrocannabinol (THC) ; delta-9-THC-seizure susceptible rabbits ; ACEP/J rabbits ; Uaz:NZW-thc rabbits ; behavioral convulsions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Sound stimulation causes audiogenic seizures (AGS) in ACEP/J, but not Uaz:NZW-thc, rabbits. Delta-9-tetrahydrocannabinol (THC) causes behavioral seizures in the latter, but not in the former, rabbits. Also, delta-9-THC blocks AGS in ACEP/J rabbits. These results support the concept that the genes conferring seizure susceptibility to these two rabbit populations are different.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Biochemical genetics 21 (1983), S. 511-526 
    ISSN: 1573-4927
    Keywords: linkage group VIII in rabbits ; rabbit prt gene ; electrophoretic variants ; rabbit genetics ; rabbit serum protein polymorphisms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The prt gene which is linked to the rabbit immunoglobulin κ-light chain gene, ab, has two phenotypes, PRT+ and PRT−. These phenotypes can be distinguished only when serum proteins from different rabbits are separated by polyacrylamide gel electrophoresis. The serum protein profiles for PRT+ rabbits show a band that is located on the anodal side of transferrin. This band is missing in the serum profiles of PRT− rabbits. However, the PRT protein is present in these rabbits. An antiserum which reacts with PRT from PRT+ rabbits detects two electrophoretic variants of PRT which are located in areas of the polyacrylamide gel obscured by other serum proteins. These results and other suggest that the prt gene has three alleles, the prt a allele encoding the protein found in PRT+ rabbits and the prt b and prt c alleles encoding the two electrophoretic variants found in PRT− rabbits.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...