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Nuclear phenotype changes after heat shock in Panstrongylus megistus (Burmeister)
- Source :
- Memórias do Instituto Oswaldo Cruz., Vol 95, Iss 2, Pp 271-277 (2000), Memórias do Instituto Oswaldo Cruz, Volume: 95, Issue: 2, Pages: 271-277, Published: APR 2000
- Publication Year :
- 2000
- Publisher :
- Instituto Oswaldo Cruz, Ministério da Saúde, 2000.
-
Abstract
- The nuclear phenotypes of Malpighian tubule epithelial cells of male nymphs of the blood-sucking insect, Panstrongylus megistus, subjected to short- and long-duration heat shocks at 40ºC were analyzed immediately after the shock and 10 and 30 days later. Normal nuclei with a usual heterochromatic body as well as phenotypes indicative of survival (unravelled heterochromatin, giants) and death (apoptosis, necrosis) responses were observed in control and treated specimens. However, all nuclear phenotypes, except the normal ones, were more frequent in shocked specimens. Similarly altered phenotypes have also been reported in Triatoma infestans following heat shock, although at different frequencies. The frequency of the various nuclear phenotypes observed in this study suggests that the forms of cell survival observed were not sufficient or efficient enough to protect all of the Malpighian tubule cells from the deleterious effects of stress. In agreement with studies on P. megistus survival following heat shock, only long-duration shock produced strongly deleterious effects.
- Subjects :
- Microbiology (medical)
Male
Nymph
Malpighian tubule system
Necrosis
Hot Temperature
Time Factors
lcsh:Arctic medicine. Tropical medicine
Heterochromatin
lcsh:RC955-962
lcsh:QR1-502
Malpighian Tubules
Molting
cell survival
lcsh:Microbiology
necrosis
Triatoma infestans
Pantrongylus megistus
medicine
Animals
nuclear phenotypes
Cell Nucleus
biology
Cell Death
apoptosis
Panstrongylus
biology.organism_classification
Phenotype
heat shock
Cell biology
Tubule
Apoptosis
Shock (circulatory)
Immunology
medicine.symptom
Subjects
Details
- Language :
- English
- ISSN :
- 16788060 and 00740276
- Volume :
- 95
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Memórias do Instituto Oswaldo Cruz.
- Accession number :
- edsair.doi.dedup.....96fc2728e669b00005524fd0d2c2a2ec