Document Detail


Genetic analysis of developmental mechanisms in hydra. VI. Cellular composition of chimera hydra.
MedLine Citation:
PMID:  422669     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The homeostatic mechanisms that maintain constant cellular ratios in hydra tissue were studied using mutant and chimeric hydra strains. Mutants having abnormal cellular compositions are isolated through sexual inbreeding of wild hydra, as described in previous papers of this series. Chimeric hydra are produced by making use of a strain (nf-I) which lacks interstitial cells, nerve cells and nematocytes in its tissue. Reintroduction of interstitial cells from other strains (both normal and mutant) into nf-I leads to creation of chimeric strains having epithelial cell lineages from one strain (nf-I) and interstitial cell lineages from others. Analyses and comparisons of the cellular compositions of all these strains revealed that the numbers of nerve or interstitial cells in the chimeras were very similar to (statistically significantly correlated with) those in their interstitial cell donors. Since chimeras and their interstitial cell donors share the same interstitial cell lineages, this suggests that interstitial cells or their derivatives (nerves and nematocytes) play major roles in determining the nerve and interstitial cell levels in the hydra tissue. It is suggested that some form of homeostatic feedback mechanisms are probably involved in regulating the levels of these cell types.
Authors:
T Sugiyama; T Fujisawa
Related Documents :
10894129 - Preferential destruction of cerebellar purkinje cells by ox7-saporin.
7696589 - Neurotrophin-3 selectively increases cultured purkinje cell survival.
20143249 - Lamellipodia mediate the heterogeneity of central olfactory ensheathing cell interactions.
3802219 - Slow pulsatile movements of schwann cells in vitro: a time-lapse cinemicrographic study.
46879 - Adoptive transfer of experimental allergic encephalomyelitis (eae): prevention of succe...
8339779 - Induction of neuronal morphology in adrenal chromaffin cells cocultured with denervated...
12406659 - Granulocyte responses to experimental injection of live and formalin-killed bacteria in...
21048849 - Acceleration of functional maturation and differentiation of neonatal porcine islet cel...
21048419 - [specific accumulation and antitumor effects of hybrid liposomes on the growth of lung ...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of cell science     Volume:  35     ISSN:  0021-9533     ISO Abbreviation:  J. Cell. Sci.     Publication Date:  1979 Feb 
Date Detail:
Created Date:  1979-05-26     Completed Date:  1979-05-26     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0052457     Medline TA:  J Cell Sci     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1-15     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Cell Count
Chimera
Connective Tissue Cells
Epithelial Cells
Homeostasis
Hydra / cytology,  genetics*,  growth & development
Mutation

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Superoxide dismutase specific activities in cultured human diploid cells of various donor ages.
Next Document:  Electrical control of flagellar activity in impaled bull spermatozoa.