Table 1 Physiological effects of terahertz radiation on neurons in vitro

From: Recent advances and research progress on microsystems and bioeffects of terahertz neuromodulation

Object

Methods

Parameters

Effects

Reference

ND7–23 cells

Examining GSH and Hsp70 levels before and after differentiation

0.14 THz, 24–62 mW/cm2, 10 min to 24 h

No stress response and no detectable adverse reactions

37

Sensory ganglia of chicken embryos

Evaluating explant neurite growth intensity

0.05–2 THz, exposure time 3 min.

Area index increased by 24% at a power density of 0.5 μW/cm2

38

Mouse ganglion retinal cells

Detecting the apoptosis of cells after terahertz exposure

0.1–3.5 THz, 5, 10, 20, 30 and 40 min

A certain inhibitory effect on the increase in apoptosis

39

NGF treated PC12 cells

Measurement of intracellular and extracellular DA and DOPAC content and DAT expression

0.06 THz, 5 mW/cm2, 24 h exposure

No evidence of nonthermal effects observed on dopamine metabolism

40

RPE cells, HCE cells and Müller cells

Assessing gene expression profile of cells

0.7 THz, 0.3 mW/cm2, 6 h

Obvious cellular gene expression differences between irradiated cells and control cells

41

Mouse primary cortical neurons and oligodendrocytes

Patch-clamp recording, TUNEL assay and gene and protein expression assessment

3.1 THz, 70 mW/cm2

Increased expression of synaptic proteins and genes

42

Rat glial cells

Assessing the changes in mitochondrial membrane potential

0.12–0.18 THz, 3.2 mW/cm2

The nonthermal effect of terahertz radiation caused cell apoptosis

43