Detection of calcium and calmodulin during spermiogenesis of phytophagous bugs (Hemiptera: Pentatomidae)
Biocell
;
25(2): 173-177, Aug. 2001.
Article
in English
| LILACS
| ID: lil-335876
ABSTRACT
The ultrastructural detection of calcium using pyroantimonate, and the immunocytochemical localization of calmodulin using monoclonal antibody were carried out during the spermiogenesis of phytophagous bugs. The presence of calcium was observed on the Golgi apparatus during the initial phases of spermiogenesis. In the other stages the calcium was observed in association with the nucleus and in some regions of acrosome. Indeed, it was detected surrounding the mitochondrial derivatives and specific axonemal microtubules on the tail region. The immunocytochemical detection of calmodulin showed the presence of this protein approximately in the same regions where the calcium was detected, indicating that calcium and calmodulin could work together during spermiogenesis of this phytophagous bugs, suggesting their involvement on the regulation of flagellar beating, nuclear compactation and acrosome formation.
Search on Google
Index:
LILACS (Americas)
Main subject:
Spermatogenesis
/
Spermatozoa
/
Calmodulin
/
Calcium
Type of study:
Diagnostic study
Limits:
Animals
Language:
English
Journal:
Biocell
Journal subject:
Clulas
Year:
2001
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade de Brasília/BR
Similar
MEDLINE
...
LILACS
LIS