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Light-induced replication of nanobacteria: a preliminary report
Andrei P Sommer1, Harri I Hassinen, E Olavi Kajander
1Department of Biomaterials/ENSOMA Laboratory, Central Institute of Biomedical Engineering, University of Ulm, Ulm, Germany. samoan@gmx.net
Journal of Clinical Laser Medicine & Surgery
|December 10, 2002
Summary
Light exposure, specifically polarized white light, was found to accelerate nanobacteria replication in vitro, suggesting these microorganisms may utilize light for development. Laser irradiation showed no effect on nanobacteria growth.
Area of Science:
- Microbiology
- Astrobiology
- Biomineralization
Background:
- Nanobacteria, 80-1,000 nm spherical particles with a carbonate apatite shell, are found in mammals and linked to biomineralization diseases.
- Their biological status (alive or not) remains unclear, despite being culturable in vitro.
- Nanobacteria-like structures in meteorites and rocks suggest potential ancient terrestrial or extraterrestrial presence.
Purpose of the Study:
- To investigate the biological effects of light on nanobacteria.
- To determine if light influences nanobacteria viability and replication.
Main Methods:
- Irradiation of nanobacteria cultures with polarized white light and laser light.
- Utilizing low, nonthermal energy density levels relevant for therapeutic applications.
- Monitoring culture turbidity as a measure of nanobacteria replication.
Main Results:
- Nanobacteria were confirmed to be alive.
- Polarized white light significantly accelerated nanobacteria replication in a dose-dependent manner.
- Laser irradiation did not demonstrate any significant effect on nanobacteria replication.
Conclusions:
- Nanobacteria may actively harness solar irradiation for development, impacting theories on early life and evolution.
- Findings suggest a role for light in biomineralization processes and photoreceptor evolution.
- The study provides novel insights into nanobacteria biology, with implications for astrobiology and evolutionary science.