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Synergistic Effects of Photo-Irradiation and Curcumin-Chitosan

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Synergistic Effects of Photo-Irradiation and Curcumin-Chitosan ( synergistic-effects-photo-irradiation-and-curcumin-chitosan )

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In accord, our previous work demonstrated that empty CS/Alg NPs at 0.1 to 0.5% (v/v) were not cytotoxic to HaCaT cells (Gomez et al., unpublished data), while higher concentrations of CS/Alg NPs at 1.0% (v/v) were mildly toxic to the cells [28]. Furthermore, the data established the non-destructive potential of photo-irradiation from the blue LED device fabricated in this study, where the exposure Molecules 2019, 24, 1388 7 of 14 of normal HaCaT cells to the blue light (425 nm) at 20 mW/cm2 for 5 min (equivalent to a light dose of about 10 J/cm2) did not result in any significant cytotoxic effects. This observation is consistent with taopthrevrieosupsecsttiuvdeyunthtraetatredportTedNFth-αa-tstLimEDulairtreaddHiaatiCoanTwceitlhls,4a1n2dtsoo4D2M6SnOmabnldueCSli/gAhtlgwNaPsstaotx0ic.5t%o 2 (kve/rva)tihnaovceytneossoinglnyifiactahnigthcyetroltiogxhitcditoysteosH(3a3C–a1T00cJe/lclsmo)r[i9n]h.ibitionoftheTNF-α-inducedproliferation. (A) (B) Figure 2. Induction of psoriasis-like proliferation of HaCaT cells by TNF-α and inhibition of the Figure 2. Induction of psoriasis-like proliferation of HaCaT cells by TNF-α and inhibition of the TNF- TNF-α-induced cell proliferation after treatment with (A) curcumin in DMSO and (B) Cur-CS/Alg α-induced cell proliferation after treatment with (A) curcumin in DMSO and (B)2Cur-CS/Alg NPs at NPs at 0.05 μg/mL and 0.1 μg/mL with and without photo-irradiation (10 J/cm ). Controls for free 0.05 μg/mL and 0.1 μg/mL with and without photo-irradiation (10 J/cm2). Controls for free curcumin curcumin and Cur-CS/Alg NPs were DMSO and CS/Alg NPs, respectively. Data are presented as the and Cur-CS/Alg NPs were DMSO and CS/Alg NPs, respectively. Data are presented as the mean (± mean (± SD) relative number of viable cells compared to the untreated control group (100%), and are SD) relative number of viable cells compared to the untreated control group (100%), and are derived derived from four replications. * p < 0.05 indicates significant differences from the untreated normal ## from four replications. * p < 0.05 indicates significant differences from the untreated normal cells, p cells, p < 0.05 indicates significant difference from the TNF-α-induced cells treated with the control < 0.05 indicates significant difference from the TNF-α-induced cells treated with the control (DMSO (DMSO or empty CS/Alg NPs). or empty CS/Alg NPs). In accord, our previous work demonstrated that empty CS/Alg NPs at 0.1 to 0.5% (v/v) were not cytotoInxiocrtdoeHratoCasiTmcuellaste(Gaocmoenzdiettioanl.,oufnhpyupbelirsphreodlifdeartat)i,vwehkielreahtingohceyrtceosnsciemnitlrartitoonsthoaftCoSb/sAerlvgeNdPins apts1o.r0i%asi(sv,/Hv)awCaeTrecmelilsdlwyetorexitcretoatehdecweiltlsh[T28N].FF-αurftohrer2m4ohre.,TthedinadtauecstitoanbliwshitehdTthNeFn-oαns-dueccstersuscfutilvlye potential of photo-irradiation from the blue LED device fabricated in this study, where the exposure of normal HaCaT cells to the blue light (425 nm) at 20 mW/cm2 for 5 min (equivalent to a light dose of about 10 J/cm2) did not result in any significant cytotoxic effects. This observation is consistent

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