Open AccessTerahertz pulses induce segment renewal via cell proliferation and differentiation overriding the endogenous regeneration program of the earthworm Eisenia andrei
Author(s) -
Mahmoud H. Abufadda,
Anita Erdélyi,
Edit Pollák,
Priyo S. Nugraha,
J. Hebling,
J. A. Fülöp,
László Molńar
Publication year - 2021
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.416158
Subject(s) - eisenia andrei , terahertz radiation , regeneration (biology) , histogenesis , microbiology and biotechnology , biology , earthworm , mitosis , oligochaeta (plant) , cell growth , endogeny , organogenesis , biophysics , optoelectronics , materials science , ecology , immunology , biochemistry , immunohistochemistry , gene
Terahertz (THz) irradiation of excised Eisenia andrei earthworms is shown to cause overriding of the genetically determined, endogenously mediated segment renewing capacity of the model animal. Single-cycle THz pulses of 5 µJ energy, 0.30 THz mean frequency, 293 kV/cm peak electric field, and 1 kHz repetition rate stimulated the cell proliferation (indicated by the high number of mitotic cells) and both histogenesis and organogenesis, producing a significantly higher number of regenerated segments. The most conspicuous alteration in THz-treated animals was the more intense development of the new central nervous system and blood vessels. These results clearly demonstrate that THz pulses are capable to efficiently trigger biological processes and suggest potential applications in medicine.