Related Experiment Videos
Action of metronidazole on Entamoeba histolytica: an ultrastructural study
A Agrawal1, S C Maitra, A Arya
1Central Drug Research Institute, Lucknow.
Abstract:
Metronidazole (19 micrograms/ml) caused progressive increase in vacuolization in Entamoeba histolytica cells with disintegration of its plasma membrane leading to almost complete disappearance of the latter within 3 hours. The drug also induced formation of helical ribosomal aggregates in the cytoplasm and disappearance of button like structures inside the nucleus.
Insights
Metronidazole treatment progressively damages Entamoeba histolytica, causing cell vacuolization and plasma membrane disintegration within 3 hours. The drug also disrupts cytoplasmic ribosomes and nuclear structures in these parasitic cells.
Area of Science:
- Cell Biology
- Parasitology
- Pharmacology
Background:
- Entamoeba histolytica is a protozoan parasite responsible for amoebiasis.
- Metronidazole is a common antibiotic and antiprotozoal medication.
Purpose of the Study:
- To investigate the ultrastructural effects of metronidazole on Entamoeba histolytica cells.
Main Methods:
- Exposure of Entamoeba histolytica to metronidazole at a concentration of 19 micrograms/ml.
- Microscopic observation of cellular changes over a 3-hour period.
Main Results:
- Progressive vacuolization and plasma membrane disintegration in treated cells.
- Induction of helical ribosomal aggregates in the cytoplasm.
- Disappearance of nuclear button-like structures.
Conclusions:
- Metronidazole induces significant and rapid cellular damage in Entamoeba histolytica.
- The drug's mechanism involves disruption of key cellular components including membranes and ribosomes.