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1.
Arq. bras. oftalmol ; Arq. bras. oftalmol;88(2): e2023, 2025. graf
Article in English | LILACS-Express | LILACS | ID: biblio-1574012

ABSTRACT

ABSTRACT Aging and face sagging have many causes, and various techniques are used for treatment, including noninvasive procedures, such as focused ultrasound, which uses the principle of collagen regeneration by coagulative necrosis of the dermis layers using radiofrequency, but this procedure has complications. We reported a case of a 54-year-old female patient who complained of poor visual acuity in her right eye three days after a focused ultrasound facial aesthetic procedure, with the best visual acuity of 20/60. Biomicroscopy of the right eye revealed an acute cataract with three points of fibrosis extending from the posterior to the anterior capsule. The patient underwent phacoemulsification surgery with visual rehabilitation and improved vision of 20/20. We hypothesized that the occurrence of acute cataract was related to the inappropriate use of focused ultrasound.

3.
Lasers Med Sci ; 39(1): 230, 2024 Sep 02.
Article in English | MEDLINE | ID: mdl-39222167

ABSTRACT

The aim of the present study was to evaluate the photothermal effects of a subdermal high-power diode laser at a wavelength (λ) of 1470 nm in the skin of rats. Twenty male Wistar rats were used, divided into 2 groups: placebo laser (PL) and active laser (AL). A high-power diode laser equipment was applied to 5 subdermal vectors on the animal's back region. The results demonstrated that active laser animals showed a better arrangement of collagen fiber bands, an increase in the thickness of the dermis and the number of vessels. Furthermore, animals treated with active laser showed an increased immunoexpression of TGF-ß and VEGF compared to the placebo. The present work demonstrated that the subdermal high-power diode laser increases the vascularization and the expression of factors that enhance skin regeneration and may be promising resource in the esthetic and dermatology clinical treatment of skin rejuvenation.


Subject(s)
Lasers, Semiconductor , Rats, Wistar , Skin , Animals , Male , Rats , Lasers, Semiconductor/therapeutic use , Skin/radiation effects , Skin/metabolism , Vascular Endothelial Growth Factor A/metabolism , Transforming Growth Factor beta/metabolism , Rejuvenation , Models, Animal
4.
Aesthetic Plast Surg ; 48(17): 3206-3215, 2024 Sep.
Article in English | MEDLINE | ID: mdl-38714538

ABSTRACT

BACKGROUND: The facial aging process entails alterations in the volume, shape, and texture of all skin layers over time. Calcium hydroxyapatite (CaHA) is a well-established safe skin filler with unique properties to resolve some skin alterations by stimulating neocollagenesis. The vectoral-lift (V-lift) technique targets the global repositioning of facial structures by addressing distinct anatomical injection planes. It includes deep facial augmentation with Radiesse PlusTM to retain ligament restructuring and superficial subcutaneous enhancement with diluted Radiesse DuoTM. Herein, we present cases that illustrate the use of this approach. METHODS: This pilot study enrolled 36 participants (33 women and three men; ages 37-68 years) in a Brazilian clinical setting, and all patients underwent a single treatment. Photographs were taken at rest, in frontal and oblique views, before injection, and 90 days after treatment. RESULTS: Treatment resulted in elevation of the upper and middle face, notable improvements in the infraorbital hollow, and adjustment of the mean facial volume. CONCLUSIONS: The V-lift technique is a three-dimensional pan-facial treatment that relies on ligament support and face vectoring to obtain a lifting effect and facial contour restoration. It encompasses deep facial augmentation involving the use of Radiesse PlusTM for restructuring and retaining ligaments and Radiesse DuoTM for superficial subcutaneous enhancement. This approach targets a global repositioning of the facial structures by addressing distinct anatomical injection planes. It achieves a repositioning of the overall facial anatomy without requiring a substantial volumetric expansion. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .


Subject(s)
Dermal Fillers , Durapatite , Rejuvenation , Skin Aging , Humans , Middle Aged , Female , Adult , Durapatite/administration & dosage , Male , Aged , Pilot Projects , Skin Aging/drug effects , Dermal Fillers/administration & dosage , Rhytidoplasty/methods , Esthetics , Treatment Outcome , Cohort Studies , Patient Satisfaction/statistics & numerical data
5.
Rev. bras. cir. plást ; 39(1): 1-8, jan.mar.2024. ilus
Article in English, Portuguese | LILACS-Express | LILACS | ID: biblio-1552822

ABSTRACT

Introdução: Os estudos de anatomia em cadáveres permitiram um melhor entendimento das estruturas da face e, consequentemente, mais segurança ao explorar os planos profundos da região facial. Uma boa técnica deve ser segura, reprodutível e respeitar os pontos anatômicos. O objetivo deste trabalho é desmistificar a técnica de deep plane facelifting por meio da dissecção de cadáveres e exposição das estruturas faciais. Método: A reprodução da técnica de "deep plane facelifting" foi realizada em 14 hemifaces de 7 peças de cadáveres frescos no Instituto de Treinamento de Cadáver em Curitiba no ano de 2021. A técnica cirúrgica foi realizada conforme nossa prática clínica e reproduzida no cadáver. Após o procedimento, as estruturas anatômicas faciais foram dissecadas para correlacionar seu posicionamento junto aos espaços anatômicos da face. Foram avaliados os posicionamentos dos ligamentos da face, vascularização e os ramos do nervo facial. Resultados: Foram identificados os espaços anatômicos relevantes à técnica de deep plane facelifting, como os espaços massetéricos inferior e superior, espaço pré-zigomático, espaço bucal e espaço cervical. Os ramos do nervo facial foram identificados no plano subSMAS e correlacionados com os espaços e planos anatômicos. Conclusão: A técnica de deep plane facelift pode ser reproduzida com segurança desde que sejam respeitados dois parâmetros. O primeiro é a entrada correta nos espaços a fim de respeitar a anatomia. O segundo é o uso de descoladores rombos para dissecção nos planos profundos da face a fim de evitar lesão nervosa dos ramos do nervo facial.


Introduction: Anatomy studies on cadavers have allowed a better understanding of the structures of the face and, consequently, greater safety when exploring the deep planes of the facial region. A good technique must be safe, reproducible, and respect anatomical points. The objective of this work is to demystify the deep plane facelifting technique through the dissection of cadavers and exposure of facial structures. Method: The reproduction of the "deep plane facelifting" technique was performed on 14 hemifaces of 7 pieces of fresh cadavers at the Instituto de Treinamento de Cadáver (Cadaver Training Institute) in Curitiba in 2021. The surgical technique was performed according to our clinical practice and reproduced on the cadaver. After the procedure, the facial anatomical structures were dissected to correlate their positioning with the anatomical spaces of the face. The positioning of the facial ligaments, vascularization, and branches of the facial nerve were evaluated. Results: The anatomical spaces relevant to the deep plane facelifting technique were identified, such as the inferior and superior masseteric spaces, prezygomatic space, buccal space, and cervical space. The facial nerve branches were identified in the sub-SMAS plane and correlated with the anatomical spaces and planes. Conclusion: The deep plane facelift technique can be reproduced safely as long as two parameters are respected. The first is the correct entry into spaces to respect the anatomy. The second is the use of blunt detachers for dissection in the deep planes of the face to avoid nerve damage to the branches of the facial nerve.

6.
Front Med (Lausanne) ; 11: 1353605, 2024.
Article in English | MEDLINE | ID: mdl-38410749

ABSTRACT

Ultrasonography (US) has emerged as a pivotal tool in Dermatology since its inaugural use in 1979. Its evolution encompasses technological advancements, higher frequencies, and diverse applications in clinical, surgical, and research aspects. The discussion centers on its crucial role in assessing skin aging through various parameters such as skin thickness, subepidermal low echogenicity band (SLEB) characterization, and echogenicity assessment. This analysis can help guide interventions in a more personalized manner for each patient and assess the effectiveness of cosmetics and procedures. Despite its widespread utility, challenges persist, including discrepancies in research outcomes, operator dependence, inability to detect minute lesions, and measurement variations throughout the day. Combining US with complementary methodologies is advocated for a better understanding of skin aging in vivo. The cost-effectiveness and non-invasiveness of the US emphasize its promising future in dermatology, but ongoing research remains imperative to enhance its accuracy and expand its applications.

7.
Acta cir. bras ; Acta cir. bras;39: e396824, 2024. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1573639

ABSTRACT

Purpose: To evaluate the influence of patients' serum vitamin D levels on muscle strength characteristics and whether it impacts the durability of botulinum toxin (BT) treatment. Methods: The muscle strength of the frontal and corrugator muscles was evaluated before and after the application of TB with pre- and post-application control measurements, and at weeks 2, 5 and 12. The effect of vitamin D on muscle strength and its interaction with BT were investigated in 20 patients. The muscle contraction force was measured by surface electromyography. Results: The results revealed statistically significant differences between the frontal measurement groups at weeks 2 and 5, as well as for the corrugator in the same weeks and at week 12. Regarding vitamin D, significant differences were observed only in the initial group with vitamin D > 30 ng/mL compared to < 30 ng/mL for the frontal muscles. Patients with higher levels of vitamin D had higher average muscle strength compared to those with lower levels in all evaluations. Conclusions: It was observed that vitamin D influences muscle strength and the necessary dosage of BT.


Subject(s)
Vitamin D , Botulinum Toxins , Skin Aging , Electromyography , Muscle Strength
8.
Clin Cosmet Investig Dermatol ; 16: 3441-3453, 2023.
Article in English | MEDLINE | ID: mdl-38050477

ABSTRACT

Background: Aesthetic treatment directed at improving facial emotional messages and social attributes may maximize patient satisfaction with treatment results. The MD Codes™ is an approach to facial aesthetic treatment that accounts for emotional messages and social attributes while minimizing variability in patient assessment, injection technique, injection sites, and treatment outcomes. Objective: To assess the impact of the MD Codes systematic treatment approach on emotional and social attributes and natural appearance after facial aesthetic treatment with hyaluronic acid (HA) fillers. Methods: A retrospective analysis was performed in patients treated with 12 mL of HA fillers (Juvéderm® Vycross™ products) per patient using the MD Codes. Study injectors, experienced clinician observers, clinical staff, laypeople, and patients evaluated impact of treatment on emotional and social attributes and natural appearance based on pre- and post-treatment photographs of patients. Results: Twelve patients and 49 external observers, from 12 countries, evaluated the images. More than 90% of patients named "eye bags" as the facial area most in need of aesthetic treatment; >55% of external observers identified "cheeks." The top 3 facial emotional attributes noted by all evaluators after treatment were, in order, "less tired", "less saggy", and "younger." All patients reported a visible and positive change in emotional attributes except for "less sad." After 9 months, most patients reported looking "less tired" (n=11/12), "less saggy" (n=8/12), and "less sad" (n=6/12). At months 6 and 9, all patients rated their appearance as natural looking. At least 90% of external observers considered the frontal view results natural for all but 1 patient. Patients reported improved positive social attributes (eg, "looking friendlier") and improvements in well-being after treatment. No serious side effects were reported. Conclusion: Implementing the MD Codes for facial aesthetic treatment may improve facial emotional attributes as well as enhance social attributes and well-being, with natural-looking results.

9.
Rev. Enferm. UERJ (Online) ; 31: e69466, jan. -dez. 2023.
Article in English, Portuguese | LILACS, BDENF - Nursing | ID: biblio-1443866

ABSTRACT

Objetivo: refletir acerca das possíveis interlocuções entre o cuidado de enfermagem e a corporeidade no tocante ao envelhecimento cutâneo à luz de Merleau-Ponty. Conteúdo: estudo teórico-reflexivo fundamentado na fenomenologia de Merleau-Ponty, com ênfase na obra Fenomenologia da Percepção e ao cuidado de enfermagem acerca de pessoas idosas que vivenciam o envelhecimento cutâneo. Organiza-se o exposto pelas categorias "O fenômeno da corporeidade na pessoa idosa à luz de Merleau-Ponty" e "Interlocuções entre Merleau-Ponty e o cuidado de enfermagem sobre o processo de envelhecimento cutâneo". Considerações finais: ao conceber as interlocuções, compreende-se que a objetivação do corpo vislumbra a intencionalidade de retorno ao corpo físico jovial e ao considerar o autoconhecimento, valorização do seu corpo e a vivência da corporeidade é possível uma melhor compreensão de si e do outro por meio da intersubjetividade que contribui com o desvelar de modificações no próprio ser(AU)


Objective: to reflect on the possible interlocutions between nursing care and corporeality regarding skin aging in the light of Merleau-Ponty. Content: theoretical-reflective study based on Merleau-Ponty's phenomenology, with emphasis on the work Phenomenology of Perception and nursing care about elderly people who experience skin aging. The above is organized into the categories "The phenomenon of embodiment in the elderly in the light of Merleau-Ponty" and "Interlocutions between Merleau-Ponty and nursing care on the skin aging process". Final considerations: when conceiving the interlocutions, it is understood that the objectification of the body envisions the intentionality of returning to the jovial physical body and when considering self-knowledge, appreciation of your body and the experience of corporeity, a better understanding of yourself and the other is possible through intersubjectivity that contributes to the unveiling of changes in the being itself(AU)


Objetivo: reflexionar sobre las posibles interlocuciones entre el cuidado de enfermería y la corporeidad en relación con el envejecimiento de la piel a la luz de Merleau-Ponty. Contenido: estudio teórico-reflexivo fundamentado en la fenomenología de Merleau-Ponty, con énfasis en la obra Fenomenología de la percepción y del cuidado de enfermería acerca de las personas mayores que experimentan el envejecimiento de la piel. Se organiza el estudio en las categorías "El fenómeno de la corporeidad en el anciano a la luz de Merleau-Ponty" e "Interlocuciones entre Merleau-Ponty y el cuidado de enfermería en el proceso de envejecimiento de la piel". Consideraciones finales: al concebir las interlocuciones se entiende que la objetivación del cuerpo vislumbra la intencionalidad de volver al cuerpo físico jovial y al considerar el autoconocimiento, la apreciación de su cuerpo y la experiencia de la corporeidad, una mejor comprensión de ti mismo y el otro a través de la intersubjetividad que contribuye al desvelamiento de cambios en el propio ser es posible(AU)


Subject(s)
Humans , Male , Female , Aged , Body Image/psychology , Skin Aging , Health of the Elderly , Nursing Care , Philosophy, Nursing
10.
J Cosmet Dermatol ; 22(12): 3459-3469, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37950417

ABSTRACT

BACKGROUND: Skin aging is a gradual cumulative process that may be accelerated by various exposome factors. AIMS: To investigate associations between exposome factors and facial skin aging in 11 locations in Argentina. PATIENTS/METHODS: An observational, cross-sectional study with assessments by exposome questionnaire, Glogau photoaging classification from I to IV, AI-based algorithm analysis of 7 skin aging signs, and SCINEXA score. RESULTS: Of 1346 participants, most were women (82%), aged 31-50 years (62%), of skin phototype III (52%), and living in urban areas (94%). The Glogau skin age was higher than the chronological age for 28% of overall participants, 36% of men, and 45% of participants from Ciudad de Buenos Aires versus 12% from Jujuy (p < 0.001). Being male (OR = 1.59; 95% CI 1.18-2.13), exposed to agrochemicals (OR = 1.59: 95% CI 1.01-2.51), of lower socioeconomic levels (OR = 2.06; 95% CI 1.32-3.21) and doing outdoor physical activity (OR = 1.33; 95% CI 1.00-1.76) increased the risk for premature aging. Odds decreased with high daily intake of water (OR = 0.76; 95% CI 0.59-0.97), daily dermocosmetic use (moisturizers [OR = 0.72; 95% CI 0.55-0.94], cleansers [OR = 0.53; CI 95% 0.42-0.67], retinoids [OR = 0.61; 95% CI 0.39-0.95]), and antiaging treatments (OR = 0.74; 95% CI 0.57-0.97). CONCLUSIONS: Some exposome factors increased the risk for premature skin aging (physical outdoor activity, exposure to agrochemicals), while others were protective factors (high water intake, antiaging treatments, use of dermocosmetics). Locations with higher pollution levels had more premature skin aging.


Subject(s)
Exposome , Skin Aging , Humans , Male , Female , Cross-Sectional Studies , Argentina/epidemiology , Agrochemicals
11.
Int J Mol Sci ; 24(17)2023 Aug 30.
Article in English | MEDLINE | ID: mdl-37686226

ABSTRACT

Food bioactive peptides are well recognized for their health benefits such as antimicrobial, antioxidant, and antihypertensive benefits, among others. Their drug-like behavior has led to their potential use in targeting skin-related aging factors like the inhibition of enzymes related with the skin-aging process. In this study, canary seed peptides (CSP) after simulated gastrointestinal digestion (<3 kDa) were fractioned by RP-HPLC and their enzyme-inhibition activity towards elastase and tyrosinase was evaluated in vitro. CSP inhibited elastase (IC50 = 6.2 mg/mL) and tyrosinase (IC50 = 6.1 mg/mL), while the hydrophobic fraction-VI (0.2 mg/mL) showed the highest inhibition towards elastase (93%) and tyrosinase (67%). The peptide fraction with the highest inhibition was further characterized by a multilevel in silico workflow, including physicochemical descriptor calculations, antioxidant activity predictions, and molecular dynamics-ensemble docking towards elastase and tyrosinase. To gain insights into the skin permeation process during molecular dynamics simulations, based on their docking scores, five peptides (GGWH, VPPH, EGLEPNHRVE, FLPH, and RPVNKYTPPQ) were identified to have favorable intermolecular interactions, such as hydrogen bonding of polar residues (W, H, and K) to lipid polar groups and 2-3 Å van der Waals close contact of hydrophobic aliphatic residues (P, V, and L). These interactions can play a critical role for the passive insertion of peptides into stratum corneum model skin-membranes, suggesting a promising application of CSP for skin-aging treatments.


Subject(s)
Monophenol Monooxygenase , Phalaris , Molecular Dynamics Simulation , Pancreatic Elastase , Seeds , Antioxidants/pharmacology
12.
Curr Drug Targets ; 24(10): 797-815, 2023.
Article in English | MEDLINE | ID: mdl-37469150

ABSTRACT

BACKGROUND: Skin aging is a natural process resulting from intrinsic (hormonal and genetic) and extrinsic (environmental) factors. Photoaging occurs due to prolonged exposure of the skin to ultraviolet radiation, accounting for 80% of facial aging. INTRODUCTION: Characteristics of aging skin include reduced elasticity, the appearance of fine wrinkles, uneven tone, and dryness. Clinical signs of photoaging involve the presence of deeper wrinkles, rough texture, dyschromia and a greater loss of elasticity compared to chronological aging. METHODS: This work reported several scientific articles that used computational techniques, such as molecular docking, molecular dynamics and quantitative structure-activity relationship (QSAR) to identify natural products and their derivatives against skin aging and photoaging. RESULTS: The in silico analyses carried out by the researchers predicted the binding affinity and interactions of the natural products with the targets matrix metalloproteinase-1, matrix metalloproteinase- 3, matrix metalloproteinase-9 and tyrosinase. Furthermore, some studies have reported the stability of the protein-ligand complex and the physicochemical properties of the studied compounds. Finally, this research proposes promising molecules against the targets. CONCLUSION: Thus, studies like this one are relevant to guide new research related to skin aging and photoaging.


Subject(s)
Skin Aging , Humans , Ultraviolet Rays/adverse effects , Molecular Docking Simulation , Skin/metabolism , Aging
13.
Toxicol In Vitro ; 91: 105637, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37394047

ABSTRACT

Rotenone (Ro), causes superoxide imbalance by inhibiting complex I of the mitochondrial electron transport chain, being able to serve as a model for functional skin aging by inducing cytofunctional changes in dermal fibroblasts prior to proliferative senescence. To test this hypothesis, we conducted an initial protocol to select a concentration of Ro (0.5, 1, 1.5, 2, 2.5, and 3 µM) that would induce the highest levels of the aging marker beta-galactosidase (ß-gal) in human dermal HFF-1 fibroblasts after 72 h of culture, as well as a moderate increase in apoptosis and partial G1 arrestment. We evaluated whether the selected concentration (1 µM) differentially modulated oxidative and cytofunctional markers of fibroblasts. Ro 1.0 µM increased ß-gal levels and apoptosis frequency, decreased the frequency of S/G2 cells, induced higher levels of oxidative markers, and presented a genotoxic effect. Fibroblasts exposed to Ro showed lower mitochondrial activity, extracellular collagen deposition, and fewer fibroblast cytoplasmic connections than controls. Ro triggered overexpression of the gene associated with aging (MMP-1), downregulation genes of collagen production (COL1A, FGF-2), and cellular growth/regeneration (FGF-7). The 1 µM concentration of Ro could serve as an experimental model for functional aging fibroblasts prior to replicative senescence. It could be used to identify causal aging mechanisms and strategies to delay skin aging events.


Subject(s)
Cellular Senescence , Rotenone , Humans , Rotenone/pharmacology , Aging , Fibroblasts , Collagen , Cells, Cultured
14.
An. bras. dermatol ; An. bras. dermatol;98(3): 324-330, May-June 2023. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1439195

ABSTRACT

Abstract Backgroud Homocitrulline (Hcit), is involved in the pathological processes of some diseases. However, the role and function of Hcit (CBL) in human skin remains largely obscure. Objective To investigate the correlation of the level of Hcit in seborrheic keratosis, skin aging, and its clinical significance. Methods Immunohistochemistry was used to analyze the level of Hcit in skin lesions of seborrheic keratosis (SK), unaffected skin (distant 0.5 centimeters from SK lesion), and normal skin of healthy subjects in the control group. ELISA test was used to detect the serum level of CBL in SK patients and healthy subjects of different ages. Results Hcit was mainly localized in the nucleus of epidermal cells. In healthy control skin, the expression of Hcit increased with age and showed a positive correlation with age (the correlation coefficient was 0.806, p = 0.0002). The expressional level of Hcit in SK lesions was higher than that in healthy control skin (Z = −3.703, p = 0.0002). The serum level of CBL in healthy subjects and in SK patients increased with age (the correlation coefficient were 0.5763, p = 0.0032; 0.682, p = 0.004. respectively). The serum level of CBL in SK patients was higher than that in healthy subjects (Z = −2.19, p = 0.030). Study limitations The small serum sample size in the study. Conclusion The high expressional level of Hcit is correlated with seborrheic keratosis and skin aging. HCit may be one of the potential biomarkers of skin aging.

15.
Rev. bras. cir. plást ; 38(2): 1-6, abr.jun.2023. ilus
Article in English, Portuguese | LILACS-Express | LILACS | ID: biblio-1443466

ABSTRACT

Skin quality deteriorates with age for various reasons, including hormone deficiencies. In women, the decline in estrogen levels during menopause plays an important role in skin degeneration, with consequent atrophy, collagen reduction, loss of elasticity, and impaired wound healing. Research has demonstrated the beneficial effects of topical phytoestrogen in preventing and repairing skin aging, with localized action and without side effects. The objective of this study was to review the relevant literature, demonstrating that this can be a safe and effective alternative for treating the skin of perimenopausal women.


A qualidade da pele deteriora-se com a idade por vários motivos, incluindo as deficiências hormonais. Nas mulheres, o declínio dos níveis de estrógeno, durante a menopausa, tem papel importante na degeneração cutânea, com consequente atrofia, redução do colágeno, perda de elasticidade e deficiência da cicatrização de feridas. Pesquisas têm demonstrado efeitos benéficos do fitoestrogênio tópico na prevenção e reparação do envelhecimento cutâneo, com ação localizada e sem efeitos colaterais. O objetivo deste estudo foi revisar a literatura pertinente ao assunto, demonstrando que esta pode ser uma alternativa segura e eficaz para o tratamento da pele de mulheres na perimenopausa.

16.
Adv Food Nutr Res ; 104: 205-228, 2023.
Article in English | MEDLINE | ID: mdl-37236732

ABSTRACT

Food derived bioactive peptides are small protein fragments (2-20 amino acids long) that can exhibit health benefits, beyond basic nutrition. For example, food bioactive peptides can act as physiological modulators with hormone or drug-like activities including anti-inflammatory, antimicrobial, antioxidant, and the ability to inhibit enzymes related to chronic disease metabolism. Recently, bioactive peptides have been studied for their potential role as nutricosmetics. For example, bioactive peptides can impart skin-aging protection toward extrinsic (i.e., environmental and sun UV-ray damage) and intrinsic (i.e., natural cell or chronological aging) factors. Specifically, bioactive peptides have demonstrated antioxidant and antimicrobial activates toward reactive oxygen species (ROS) and pathogenic bacteria associated with skin diseases, respectively. The anti-inflammatory properties of bioactive peptides using in vivo models has also been reported, where peptides have shown to decreased the expression of IL-6, TNF-α, IL-1ß, interferon-γ (INF-γ), and interleukin-17 (IL-17) in mice models. This chapter will discuss the main factors that trigger skin-aging processes, as well as provide examples of in vitro, in vivo, and in silico applications of bioactive peptides in relation to nutricosmetic applications.


Subject(s)
Anti-Infective Agents , Skin Aging , Animals , Mice , Antioxidants/pharmacology , Peptides/pharmacology , Peptides/chemistry , Anti-Infective Agents/chemistry , Anti-Infective Agents/pharmacology , Anti-Inflammatory Agents/pharmacology , Anti-Inflammatory Agents/chemistry
17.
Molecules ; 28(8)2023 Apr 12.
Article in English | MEDLINE | ID: mdl-37110634

ABSTRACT

Skin aging represents a health and aesthetic problem that could result in infections and skin diseases. Bioactive peptides can potentially be used in skin aging regulation. Chickpea (Cicer arietinum L.) selenoproteins were obtained from germination with 2 mg Na2SeO3/100 g of seeds for 2 days. Alcalase, pepsin, and trypsin were used as hydrolyzers, and a membrane < 10 kDa was used to fractionate the hydrolysate. Se content, antioxidant capacity, elastase and collagen inhibition, functional stability, and preventative capacity were analyzed. Significant increases in Se content were found in germinated chickpea flour and protein related to the control. An increase of 38% in protein was observed in the selenized flour related to the control. A band (600-550 cm-1) observed in the selenized hydrolysates suggested the insertion of Se into the protein. Hydrolysates from pepsin and trypsin had the highest antioxidant potential. Se enhanced the stability of total protein and protein hydrolysates through time and increased their antioxidant capacity. Hydrolysates > 10 kDa had higher elastase and collagenase inhibition than the total protein and hydrolysates < 10 kDa. Protein hydrolysates < 10 kDa 6 h before UVA radiation had the highest inhibition of collagen degradation. Selenized protein hydrolysates showed promising antioxidant effects that could be related to skin anti-aging effects.


Subject(s)
Antioxidants , Cicer , Antioxidants/pharmacology , Antioxidants/metabolism , Cicer/chemistry , Protein Hydrolysates/chemistry , Pepsin A/metabolism , Trypsin/metabolism , Pancreatic Elastase/metabolism
18.
Gac Med Mex ; 159(1): 49-54, 2023.
Article in English | MEDLINE | ID: mdl-36930556

ABSTRACT

INTRODUCTION: Dermatoporosis is a chronic cutaneous fragility syndrome, characterized by skin atrophy, purpura and pseudo-cicatrices. OBJECTIVE: To determine factors associated with dermatoporosis in a sample of subjects aged ≥ 60 years. METHODS: Observational, cross-sectional, descriptive, analytical study of subjects aged ≥ 60 years who underwent history taking, physical examination and application of a self-administered dermatoporosis diagnostic questionnaire. To determine the associated factors, a multivariate logistic regression analysis was used. RESULTS: In 315 evaluated subjects, the prevalence of dermatoporosis was 29%; 70% were females. Associated risk factors were age > 75 years (p = 0.001), prolonged sun exposure (p = 0.002), use of anticoagulants/antiplatelet medications (p = 0.004), oral steroids (p = 0.03) and chronic kidney disease (p = 0.03), as well as maternal age > 40 years at last pregnancy (p = 0.02), breastfeeding for > 7 months per pregnancy and > 18 cumulative months (p = 0.01). Age < 20 years at first pregnancy and menopause after 45 years were related to dermatoporosis absence. The correlation between self-assessment and clinical diagnosis was considerably high (0.95, p < 0.001). CONCLUSIONS: The risk factors associated with dermatoporosis were similar to those previously reported.


INTRODUCCIÓN: La dermatoporosis es un síndrome crónico de fragilidad cutánea, caracterizado por atrofia, púrpura y pseudocicatrices en piel. OBJETIVO: Determinar los factores asociados a dermatoporosis en una muestra de sujetos ≥ 60 años. MÉTODOS: Estudio observacional, transversal, descriptivo y analítico de sujetos ≥ 60 años a quienes se realizó historia clínica, exploración física y aplicación de un autocuestionario diagnóstico de dermatoporosis. Para determinar los factores asociados se realizó análisis de regresión logística multivariado. RESULTADOS: En 315 sujetos, la prevalencia de dermatoporosis fue de 29 %; 70 % fue del sexo femenino. Los factores asociados fueron edad > 75 años (p = 0.001), exposición solar prolongada (p = 0.002), ingesta de anticoagulantes/antiplaquetarios (p = 0.004), esteroides orales (p = 0.03) y enfermedad renal crónica (p = 0.03); así como, edad materna > 40 años en el último parto (p = 0.02), lactancia > 7 meses por embarazo y lactancia acumulada > 18 meses (p = 0.01). Se relacionaron con su ausencia, edad < 20 años en el primer embarazo y menopausia después de los 45 años. La correlación entre la autovaloración y el diagnóstico clínico fue muy alta (0.95, p < 0.001). ­. CONCLUSIONES: Los factores de riesgo asociados a dermatoporosis fueron similares a los previamente reportados.


Subject(s)
Skin Aging , Skin Diseases , Aged , Female , Humans , Male , Cross-Sectional Studies , Mexico/epidemiology , Risk Factors , Skin , Skin Diseases/diagnosis , Skin Diseases/epidemiology
19.
Photobiomodul Photomed Laser Surg ; 41(2): 48-56, 2023 Feb.
Article in English | MEDLINE | ID: mdl-36780572

ABSTRACT

Objective: This study aimed to evaluate red and amber light-emitting diode protocols for facial rejuvenation at the same light dose. Background: The demand for minimally invasive cosmetic procedures to address skin aging has grown throughout the world. In vitro red and amber photobiomodulation (PBM) has been shown to improve collagen synthesis. Meanwhile, red PBM has already been studied in clinical trials; however, a comparison of the use of different wavelengths at the same light dose to reduce periocular wrinkles has not yet been performed. Methods: This split-face, randomized clinical trial recruited 137 women (40-65 years old) presenting with skin phototypes II-IV and Glogau photoaging scale types II-IV. The individuals received 10 sessions for 4 weeks of red (660 nm) and amber (590 nm) PBM (3.8 J/cm2), one at each side of the face. The outcomes, measured before and after the treatments, were the periocular wrinkle volume measured by VisioFace® RD equipment; hydration measured by the Corneometer CM 825; skin elasticity measured by the Cutometer Dual MPA 580; and quality of life determined by adapted versions of validated questionnaires [Melasma Quality of Life Scale-Brazilian Portuguese (MelasQoL-BP) and Skindex-29]. Results: There was a significant reduction in wrinkle volume after red (31.6%) and amber (29.9%) PBM. None of the treatments improved skin hydration and viscoelasticity. Both questionnaires showed improvements in participants' quality of life. Conclusions: PBM, both at red and amber wavelengths, is an effective tool for rejuvenation, producing a 30% wrinkle volume reduction. The technique has strong potential in patients with diabetes or those presenting with keloids, conditions for which highly inflammatory rejuvenating procedures are not indicated. Clinical trial registration number: REBEC-6YFCBM.


Subject(s)
Skin Aging , Humans , Female , Adult , Middle Aged , Aged , Treatment Outcome , Quality of Life , Amber , Prospective Studies
20.
Gac. méd. Méx ; Gac. méd. Méx;159(1): 50-55, ene.-feb. 2023. tab, graf
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1448265

ABSTRACT

Resumen Introducción: La dermatoporosis es un síndrome crónico de fragilidad cutánea, caracterizado por atrofia, púrpura y pseudocicatrices en piel. Objetivo: Determinar los factores asociados a dermatoporosis en una muestra de sujetos ≥ 60 años. Métodos: Estudio observacional, transversal, descriptivo y analítico de sujetos ≥ 60 años a quienes se realizó historia clínica, exploración física y aplicación de un autocuestionario diagnóstico de dermatoporosis. Para determinar los factores asociados se realizó análisis de regresión logística multivariado. Resultados: En 315 sujetos, la prevalencia de dermatoporosis fue de 29 %; 70 % fue del sexo femenino. Los factores asociados fueron edad > 75 años (p = 0.001), exposición solar prolongada (p = 0.002), ingesta de anticoagulantes/antiplaquetarios (p = 0.004), esteroides orales (p = 0.03) y enfermedad renal crónica (p = 0.03); así como, edad materna > 40 años en el último parto (p = 0.02), lactancia > 7 meses por embarazo y lactancia acumulada > 18 meses (p = 0.01). Se relacionaron con su ausencia, edad < 20 años en el primer embarazo y menopausia después de los 45 años. La correlación entre la autovaloración y el diagnóstico clínico fue muy alta (0.95, p < 0.001). Conclusiones: Los factores de riesgo asociados a dermatoporosis fueron similares a los previamente reportados.


Abstract Introduction: Dermatoporosis is a chronic cutaneous fragility syndrome, characterized by skin atrophy, purpura and pseudo-cicatrices. Objective: To determine factors associated with dermatoporosis in a sample of subjects aged ≥ 60 years. Methods: Observational, cross-sectional, descriptive, analytical study of subjects aged ≥ 60 years who underwent history taking, physical examination and application of a self-administered dermatoporosis diagnostic questionnaire. To determine the associated factors, a multivariate logistic regression analysis was used. Results: In 315 evaluated subjects, the prevalence of dermatoporosis was 29%; 70% were females. Associated risk factors were age > 75 years (p = 0.001), prolonged sun exposure (p = 0.002), use of anticoagulants/antiplatelet medications (p = 0.004), oral steroids (p = 0.03) and chronic kidney disease (p = 0.03); as well maternal age > 40 years at last pregnancy (p = 0.02), breastfeeding for > 7 months per pregnancy and > 18 cumulative months (p = 0.01). Age < 20 years at first pregnancy and menopause after 45 years were related to dermatoporosis absence. The correlation between self-assessment and clinical diagnosis was considerably high (0.95, p < 0.001). Conclusions: The risk factors associated with dermatoporosis were similar to those previously reported.

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