Laser light propagation in adipose tissue and laser effects on adipose cell membranes

Efraín Solarte; Aldo Rebolledo; Oscar Gutierrez; William Criollo; Rodrigo Neira; José Arroyave; Hugo Ramírez

doi:10.1117/12.667088

2 February 2006 Laser light propagation in adipose tissue and laser effects on adipose cell membranes

Efraín Solarte, Aldo Rebolledo, Oscar Gutierrez, William Criollo, Rodrigo Neira, José Arroyave, Hugo Ramírez

Proceedings Volume 6026, ICO20: Biomedical Optics; 602605 (2006) https://doi.org/10.1117/12.667088
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

Recently Neira et al. have presented a new liposuction technique that demonstrated the movement of fat from inside to outside of the cell, using a low-level laser device during a liposuction procedure with Ultrawet solution. The clinical observations, allowed this new surgical development, started a set of physical, histological and pharmacological studies aimed to determine the mechanisms involved in the observed fat mobilization concomitant to external laser application in liposuction procedures. Scanning and Transmission Electron Microscopy, studies show that the cellular arrangement of normal adipose tissue changes when laser light from a diode laser: 10 mW, 635 nm is applied. Laser exposures longer than 6 minutes cause the total destruction of the adipocyte panicles. Detailed observation of the adipose cells show that by short irradiation times (less than four minutes) the cell membrane exhibits dark zones, that collapse by longer laser exposures. Optical measurements show that effective penetration length depends on the laser intensity. Moreover, the light scattering is enhanced by diffraction and subsequent interference effects, and the tumescent solution produces a clearing of the tissue optical medium. Finally, isolate adipose cell observation show that fat release from adipocytes is a concomitant effect between the tumescent solution (adrenaline) and laser light, revealing a synergism which conduces to the aperture, and maybe the disruption, of the cell membrane. All these studies were consistent with a laser induced cellular process, which causes fat release from inside the adipocytes into the intercellular space, besides a strong modification of the cellular membranes.

Citation Download Citation

Efraín Solarte, Aldo Rebolledo, Oscar Gutierrez, William Criollo, Rodrigo Neira, José Arroyave, and Hugo Ramírez "Laser light propagation in adipose tissue and laser effects on adipose cell membranes", Proc. SPIE 6026, ICO20: Biomedical Optics, 602605 (2 February 2006); https://doi.org/10.1117/12.667088

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KEYWORDS

Signal attenuation

Laser tissue interaction

Light scattering

Scanning electron microscopy

Semiconductor lasers

Transmittance

Tissues

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