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Luce LED Nuove prospettive in medicina estetica - Sponzilli.it

Luce LED Nuove prospettive in medicina estetica - Sponzilli.it

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Tecnologia<br />

Sorgenti di luce non coerente<br />

La fotobiomodulazione è stata così effettuata:<br />

■■<br />

tecnologia pulsata 800 on e 100 off;<br />

■■<br />

lunghezze d’onda 660 e 850 nm;<br />

■■<br />

tempo di trattamento 3 m<strong>in</strong>uti a 660 nm e 3 m<strong>in</strong>uti a 850 nm;<br />

■■<br />

sedute effettuate 12, con frequenza 2 volte a settimana.<br />

Il risultato è stato verificato <strong>in</strong> term<strong>in</strong>i di pH, elastic<strong>it</strong>à cutanea e <strong>in</strong>dice di soddisfacimento<br />

<strong>in</strong>dividuale a 2 mesi e a 4 mesi. L’elastic<strong>it</strong>à cutanea è migliorata nella media del gruppo esam<strong>in</strong>ato<br />

del 24%, mentre l’<strong>in</strong>dice medio di soddisfacimento per un miglioramento generale dello stato<br />

della cute e riduzione di rughe sottili è risultato 7 <strong>in</strong> una scala da 1 a 10 (figura 1).<br />

Questi risultati ci hanno portato a <strong>in</strong>traprendere un nuovo lavoro che oltre a sfruttare l’effetto di<br />

fotobiomodulazione utilizzi anche la fotoporazione, per cui abbiamo <strong>in</strong>iziato una sperimentazione<br />

fotoporando preparati idrolizzati di fibronect<strong>in</strong>a, sieri proteici ed epigallocatech<strong>in</strong>gallato al f<strong>in</strong>e<br />

di verificare l’effetto comb<strong>in</strong>ato di fotoporazione e fotobiomodulazione. Essendo però questa<br />

sperimentazione ancora all’<strong>in</strong>izio non siamo <strong>in</strong> grado di poter trarre nessuna conclusione anche se<br />

i risultati sembrano estremamente <strong>in</strong>coraggianti.<br />

Trattamento dell’acne<br />

L’effetto della luce <strong>LED</strong> si esplica soprattutto nel dim<strong>in</strong>uire la popolazione batterica e<br />

nell’elim<strong>in</strong>are la flogosi. Il Propionibacterium acnes è il microrganismo prevalente nella pelle e nei<br />

follicoli delle aree ricche <strong>in</strong> ghiandole sebacee; questo batterio produce porfir<strong>in</strong>e endogene la<br />

cui componente pr<strong>in</strong>cipale è la coproporfir<strong>in</strong>a 3. L’esposizione alla lunghezza d’onda del blu e<br />

del violetto aumenta la produzione di questa porfir<strong>in</strong>a attraverso l’assorbimento di fotoni e la<br />

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susface profilometric results. Laser Surg Med 2005; 36: 85-91.<br />

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46 Dermakos • maggio 2012

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