Vol. 45, No. 1 Supplementum, 2001 content next

MORPHOLOGICAL CHANGES IN THE SMALL INTESTINE OF JAPANESE QUAIL CHICKS HATCHED UNDER THE CONDITIONS OF MICROGRAVITATION

Cigánková, V., Lenhardt, Ľ., Zibrín, M., Kočišová, J., Tomajková, E., Komorová, T., Sabo, V.*, Boďa, K.**, Dadasheva, O. A.***, Guryeva, T. S.***

University of Veterinary Medicine
Komenského 73
041 81 Košice
The Slovak Republic		 * Institute of Animal Biochemistry and Genetics SAS
900 28 Ivanka pri Dunaji
The Slovak Republic		 ** Research Institute of Veterinary Medicine
Hlinkova 1/a
040 01 Košice
The Slovak Republic		 *** State Scientific Centre - Institute of Biomedical Problems
76A Khoroshevskoye shosse
Moscow 123007
Russia

Summary

The microscopic and submicroscopic picture of the epithelial lining of the small intestine of Japanese quail chicks, hatched on the orbital space station "MIR", were studied. After their return to the Earth, the animals were 4-5 days old.
In some enterocytes of the duodenum and jejunum, significant morphological changes were found by using the light microscope. In these enterocytes, the changes in the nucleus and cytoplasm were discovered submicroscopically. Cisternae of the endoplasmic reticulum were dilated. Mitochondria had impaired external membranes and mirochondrial cristae. The morphological changes in enterocytes are presumed to arise when there is a decreased food intake.

Key words: Japanese quail chicks; enterocytes; space flight; morphology

References

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Folia Veterinaria / 2001