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1.
Efficacy of anti-inflammatory moisturizer vs hydrophilic cream in elderly patients with moderate to severe xerosis: A split site, triple-blinded, randomized, controlled trial.
Lueangarun, S, Soktepy, B, Tempark, T
Journal of cosmetic dermatology. 2020;(6):1432-1438
Abstract
BACKGROUND Xerosis is a common problem among the elderly, characterized by dry-scaling erythema, fissuring, or pruritus, which could be treated by anti-inflammatory moisturizers without side effects of steroids. AIMS We aimed to investigate the efficacy of anti-inflammatory moisturizer (MAS062D lotion) vs hydrophilic cream for the improvement of dry and barrier function skin in xerosis patients. METHODS A split site, triple-blinded, randomized, controlled trial was conducted in the elderly with moderate to severe xerosis, who received the 28-day twice daily application of MAS062D lotion and hydrophilic cream on the assigned shins. The evaluations on day 0, 14, and 28 were performed using clinical assessment, skin hydration by corneometer, transepidermal water loss (TEWL), and biometric assessment. RESULTS There were 24 Thai elderly patients, of whom 87.5% were female (mean age = 58.04 years and mean xerosis severity scale (XSS) = 4.83). Both treatments revealed similar statistically significant improvement in XSS (P < .001). Interestingly, MAS062D lotion-treated side remarkably showed improvement of skin hydration compared with hydrophilic-treated side for 26.86 ± 7.94 vs 25.84 ± 5.1, 41.24 ± 6.92 vs 20.96 ± 6.8, 50.49 ± 8.2 vs 21.75 ± 8.29 at baseline, day 14, and 28, respectively (P-value < .001). Moreover, MAS062D lotion significantly yielded greater decrease in TEWL measurement and more erythema improvement than hydrophilic cream (P-value < .001). No serious adverse effects were observed with either treatment. CONCLUSION The MAS062D lotion could potentially be an efficacious treatment for improvement of xerosis in the elderly, which is also safe and refrains from steroid side effects.
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2.
Topical application and oral supplementation of peptides in the improvement of skin viscoelasticity and density.
Maia Campos, PMBG, Melo, MO, Siqueira César, FC
Journal of cosmetic dermatology. 2019;(6):1693-1699
Abstract
BACKGROUND The combination of oral supplementation and topical formulations to the improvement of skin conditions has been proposed as an innovative approach to obtain effective treatments. However, studies comparing the effectiveness of each type of treatments are still in lack. This way, the objective of this work was to evaluate the clinical efficacy of a dermocosmetic formulation with di- and tripeptides, as well the effects of an oral supplementation based on hydrolyzed collagen through biophysical and skin imaging techniques. METHODS Sixty healthy female subjects, aged between 40 and 50 years, were enrolled, being separated in 3 groups: topical formulation, oral supplementation, and oral placebo. The stratum corneum water content, skin viscoelasticity, dermis echogenicity, and skin pores parameters were evaluated. RESULTS The group with the topical formulation showed a significant increase in the stratum corneum water content and skin elasticity after 28-day period and also acted in the dermis echogenicity after 90 days with the formulation with peptides. The oral supplementation acted on skin elasticity and presented a more pronounced effect on dermis echogenicity, reducing skin pores after 90-day period. CONCLUSION The obtained results with oral supplementation and topical application of hydrolyzed proteins were considered complementary in the improvement of general skin conditions, acting in different mechanisms.
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3.
The Efficacy and Safety of 660 nm and 411 to 777 nm Light-Emitting Devices for Treating Wrinkles.
Nam, CH, Park, BC, Kim, MH, Choi, EH, Hong, SP
Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.]. 2017;(3):371-380
Abstract
BACKGROUND Low-level light therapy (LLLT) using light-emitting diodes (LEDs) is considered to be helpful for skin regeneration and anti-inflammation. OBJECTIVE To evaluate the efficacy and safety of 2 types of LLLTs using 660 nm-emitting red LEDs and 411 to 777 nm-emitting white LEDs in the treatment of facial wrinkles. MATERIALS AND METHODS A prospective, randomized, double-blinded, comparative clinical trial involving 52 adult female subjects was performed. The faces of the subjects were irradiated daily with 5.17 J of red or white LEDs for 12 weeks. RESULTS In both groups treated with red and white LEDs, the wrinkle measurement from skin replica improved significantly from baseline at Week 12. The red LED group showed slightly better improvement, but there were no statistical differences. In assessments by blinded dermatologists, no significant differences were observed in both groups. In the global assessment of the subjects, the mean improvement score of the red LED group was higher than that of the white LED group. CONCLUSION Low-level light therapy using 660 nm LEDs or 411 to 777 nm LEDs significantly improved periocular wrinkles. Especially, 660 nm LEDs could be an effective and tolerable treatment option for wrinkles.
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4.
A randomized, double-blind, split-face study comparing the efficacy and tolerability of three retinol-based products vs. three tretinoin-based products in subjects with moderate to severe facial photodamage.
Babcock, M, Mehta, RC, Makino, ET
Journal of drugs in dermatology : JDD. 2015;(1):24-30
Abstract
Retinol, has been shown to improve the appearance of photodamaged skin when applied topically, and is generally considered to be approximately ten times less potent than tretinoin. To assess this theory, three cosmetic formulations containing 0.25%, 0.5%, and 1.0% retinol were developed to correspond to the three commonly prescribed concentrations of tretinoin (0.025%, 0.05%, and 0.1%). A randomized, double-blind, split-face comparison study was conducted to compare the three concentrations retinol (Ret) including 0.25%, 0.5%, and 1.0%, against the respective three strengths of tretinoin (Tret) 0.025%, 0.05%, and 0.1% in subjects with moderate to severe facial photodamage. Subjects were randomized into three groups: Group 1 (Ret 0.25% vs. Tret 0.025%); Group 2 (Ret 0.5% vs. Tret 0.05%); and Group 3 (Ret 1.0% vs. Tret 0.1%). Within each group, subjects were randomized to apply Ret on one half of the face (left or right) and Tret on the other facial side, for a duration of twelve weeks. Clinical evaluations for efficacy and tolerability, as well as standardized digital photographs were conducted at baseline and at weeks 4, 8, and 12. Sixty-five subjects completed the twelve-week study (Group 1: n=24, Group 2: n=20, and Group 3: n=21). At week 12 in all treatment groups, both Ret and Tret produced statistically significant improvements from baseline in all efficacy parameters, including overall photodamage, fine lines/wrinkles, coarse lines/wrinkles, skin tone brightness, mottled pigmentation, and tactile roughness (all P<0.001). There were no significant differences in efficacy between Ret and Tret in these efficacy parameters. Results from this comparison study suggest that this sustained-release retinol complex containing multiple agents for optimal irritation control provides comparable improvements to tretinoin in the appearance of photodamage.
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5.
The Hyaluronic Acid Fillers: Current Understanding of the Tissue Device Interface.
Greene, JJ, Sidle, DM
Facial plastic surgery clinics of North America. 2015;(4):423-32
Abstract
The article is a detailed update regarding cosmetic injectable fillers, specifically focusing on hyaluronic acid fillers. Hyaluronic acid-injectable fillers are used extensively for soft tissue volumizing and contouring. Many different hyaluronic acid-injectable fillers are available on the market and differ in terms of hyaluronic acid concentration, particle size, cross-linking density, requisite needle size, duration, stiffness, hydration, presence of lidocaine, type of cross-linking technology, and cost. Hyaluronic acid is a natural component of many soft tissues, is identical across species minimizing immunogenicity has been linked to wound healing and skin regeneration, and is currently actively being studied for tissue engineering purposes. The biomechanical and biochemical effects of HA on the local microenvironment of the injected site are key to its success as a soft tissue filler. Knowledge of the tissue-device interface will help guide the facial practitioner and lead to optimal outcomes for patients.
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6.
The effectiveness of a standardized rose hip powder, containing seeds and shells of Rosa canina, on cell longevity, skin wrinkles, moisture, and elasticity.
Phetcharat, L, Wongsuphasawat, K, Winther, K
Clinical interventions in aging. 2015;:1849-56
Abstract
OBJECTIVE To evaluate the effects of a rose hip powder (Hyben Vital(®)) made from seeds and shells on cell senescence, skin wrinkling, and aging. METHODS A total of 34 healthy subjects, aged 35-65 years, with wrinkles on the face (crow's-feet) were subjected to a randomized and double-blinded clinical study of the effects of the rose hip powder, as compared to astaxanthin, a well-known remedy against wrinkles. During the 8-week study, half of the participants ingested the standardized rose hip product, while the other half ingested astaxanthin. Objective measurements of facial wrinkles, skin moisture, and elasticity were made by using Visioscan, Corneometer, and Cutometer at the beginning of the study, after 4 weeks, and after 8 weeks. Evaluation of participant satisfaction of both supplements was assessed using questionnaires. In addition, the effect of the rose hip preparation on cell longevity was measured in terms of leakage of hemoglobin through red cell membranes (hemolytic index) in blood samples kept in a blood bank for 5 weeks. Significance of all values was attained with P≤0.05. RESULTS In the double-blinded study, the rose hip group showed statistically significant improvements in crow's-feet wrinkles (P<0.05), skin moisture (P<0.05), and elasticity (P<0.05) after 8 weeks of treatment. A similar improvement was observed for astaxanthin, with P-values 0.05, 0.001, and 0.05. Likewise, both groups expressed equal satisfaction with the results obtained in their self-assessment. The rose hip powder further resulted in increased cell longevity of erythrocyte cells during storage for 5 weeks in a blood bank. CONCLUSION Results suggest that intake of the standardized rose hip powder (Hyben Vital(®)) improves aging-induced skin conditions. The apparent stabilizing effects of the rose hip product on cell membranes of stored erythrocyte cells observed in this study may contribute to improve the cell longevity and obstructing skin aging.
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7.
Supplementating with dietary astaxanthin combined with collagen hydrolysate improves facial elasticity and decreases matrix metalloproteinase-1 and -12 expression: a comparative study with placebo.
Yoon, HS, Cho, HH, Cho, S, Lee, SR, Shin, MH, Chung, JH
Journal of medicinal food. 2014;(7):810-6
Abstract
Photoaging accounts for most age-related changes in skin appearance. It has been suggested that both astaxanthin, a potent antioxidant, and collagen hydrolysate can be used as antiaging modalities in photoaged skin. However, there is no clinical study using astaxanthin combined with collagen hydrolysate. We investigated the effects of using a combination of dietary astaxanthin and collagen hydrolysate supplementation on moderately photoaged skin in humans. A total of 44 healthy subjects were recruited and treated with astaxanthin (2 mg/day) combined with collagen hydrolysate (3 g/day) or placebos, which were identical in appearance and taste to the active supplementation for 12 weeks. The elasticity and hydration properties of facial skin were evaluated using noninvasive objective devices. In addition, we also evaluated the expression of procollagen type I, fibrillin-1, matrix metalloproteinase-1 (MMP-1) and -12, and ultraviolet (UV)-induced DNA damage in artificially UV-irradiated buttock skin before and after treatment. The supplement group showed significant improvements in skin elasticity and transepidermal water loss in photoaged facial skin after 12 weeks compared with the placebo group. In the supplement group, expression of procollagen type I mRNA increased and expression of MMP-1 and -12 mRNA decreased compared with those in the placebo group. In contrast, there was no significant difference in UV-induced DNA damage between groups. These results demonstrate that dietary astaxanthin combined with collagen hydrolysate can improve elasticity and barrier integrity in photoaged human facial skin, and such treatment is well tolerated.
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8.
Acute ascorbate supplementation alone or combined with arginase inhibition augments reflex cutaneous vasodilation in aged human skin.
Holowatz, LA, Thompson, CS, Kenney, WL
American journal of physiology. Heart and circulatory physiology. 2006;(6):H2965-70
Abstract
Full expression of reflex cutaneous vasodilation (VD) is dependent on nitric oxide (NO) and is attenuated in older humans. NO may be decreased by an age-related increase in reactive oxygen species or a decrease in L-arginine availability via upregulated arginase. The purpose of this study was to determine the effect of acute antioxidant supplementation alone and combined with arginase inhibition on reflex VD in aged skin. Eleven young (Y; 22 +/- 1 yr) and 10 older (O; 68 +/- 1 yr) human subjects were instrumented with four intradermal microdialysis (MD) fibers. MD sites were control (Co), NO synthase inhibited (NOS-I), L-ascorbate supplemented (Asc), and Asc + arginase-inhibited (Asc + A-I). After baseline measurements, subjects underwent whole body heating to increase oral temperature (T(or)) by 0.8 degrees C. Red blood cell flux was measured by using laser-Doppler flowmetry, and cutaneous vascular conductance (CVC) was calculated (CVC = flux/mean arterial pressure) and normalized to maximal (CVC(max)). VD during heating was attenuated in O (Y: 37 +/- 3 vs. O: 28 +/- 3% CVC(max); P < 0.05). NOS-I decreased VD in both groups compared with Co (Y: 20 +/- 4; O: 15 +/- 2% CVC(max); P < 0.05 vs. Co within group). Asc and Asc + A-I increased VD beyond Co in O (Asc: 35 +/- 4% CVC(max); Asc + A-I: 41 +/- 3% CVC(max); P < 0.001) but not in Y (Asc: 36 +/- 3% CVC(max); Asc + A-I: 40 +/- 5% CVC(max); P > 0.05). Combined Asc + A-I resulted in a greater increase in VD than Asc alone in O (P = 0.001). Acute Asc supplementation increased reflex VD in aged skin. Asc combined with arginase inhibition resulted in a further increase in VD above Asc alone, effectively restoring CVC to the level of young subjects.
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9.
[Topically applied arginine hydrochloride. Effect on urea content of stratum corneum and skin hydration in atopic eczema and skin aging].
Nenoff, P, Donaubauer, K, Arndt, T, Haustein, UF
Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete. 2004;(1):58-64
Abstract
BACKGROUND AND OBJECTIVE Currently, there are no data on how the topical application of amino acids influences the complex moisture retaining system of the skin in vivo. PATIENTS/METHODS An open study was performed to investigate the effects of topical application of arginine hydrochloride on epidermal stratum corneum urea content, transepidermal water loss, skin hydration, and clinical status of patients with atopic dermatitis and dry elderly skin. RESULTS Treatment of patients with atopic dermatitis with 2.5% arginine hydrochloride ointment over 4 weeks showed a significant increase in urea in the stratum corneum as well as a continuous increase in skin moisture. CONCLUSIONS The urea deficit in the stratum corneum in atopic dermatitis and elderly skin was corrected not by applying the moisturizer urea itself but instead by using arginine - its precursor in the Krebs-Henseleit urea cycle. This topical treatment also improved the clinical symptoms of dry skin.