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Search Results (1,359)

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Keywords = skin metabolism

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24 pages, 30723 KiB  
Article
Camellia japonica Flower Extract and the Active Constituent Hyperoside Repair DNA Damage Through FUNDC1-Mediated Mitophagy Pathway for Skin Anti-Aging
by Hongqi Gao, Jiahui Shi, Guangtao Li, Zhifang Lai, Yan Liu, Chanling Yuan and Wenjie Mei
Antioxidants 2025, 14(8), 968; https://doi.org/10.3390/antiox14080968 (registering DOI) - 6 Aug 2025
Abstract
Skin aging is closely related to mitochondrial dysfunction and cell cycle abnormalities, and developing intervention strategies targeting mitochondrial quality control is an important direction for anti-aging research. In this study, we investigated the anti-aging mechanism of Camellia japonica flower (CJF) extract and its [...] Read more.
Skin aging is closely related to mitochondrial dysfunction and cell cycle abnormalities, and developing intervention strategies targeting mitochondrial quality control is an important direction for anti-aging research. In this study, we investigated the anti-aging mechanism of Camellia japonica flower (CJF) extract and its active ingredient hyperoside based on a doxorubicin (DOX)-induced endogenous senescence model in human skin fibroblasts (HSFs). LC-MS proteomics analysis revealed that CJF extract and hyperoside specifically activated the FUNDC1-mediated mitochondrial autophagy pathway, significantly ameliorated the DOX-induced decrease in mitochondrial membrane potential and the accumulation of reactive oxygen species (ROS), and alleviated the cellular S-phase blockade and reversed the high expression of senescence-associated β-galactosidase (SA-β-gal). Further studies showed that the two cleared damaged mitochondria by enhancing mitochondrial autophagy and restoring cellular energy metabolism homeostasis while promoting type III collagen and elastin synthesis and repairing the expression of Claudin 1 related to skin barrier function. For the first time, the present study reveals the molecular mechanism of CJF extract in delaying skin aging by regulating the FUNDC1-dependent mitochondrial autophagy pathway, which provides a theoretical basis and a candidate strategy for developing novel anti-aging agents targeting mitochondrial quality control. Full article
(This article belongs to the Section Extraction and Industrial Applications of Antioxidants)
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13 pages, 1194 KiB  
Review
Kiwifruit Peelability (Actinidia spp.): A Review
by Beibei Qi, Peng Li, Jiewei Li, Manrong Zha and Faming Wang
Horticulturae 2025, 11(8), 927; https://doi.org/10.3390/horticulturae11080927 (registering DOI) - 6 Aug 2025
Abstract
Kiwifruit (Actinidia spp.) is a globally important economic fruit with high nutritional value. Fruit peelability, defined as the mechanical ease of separating the peel from the fruit flesh, is a critical quality trait influencing consumer experience and market competitiveness and has emerged [...] Read more.
Kiwifruit (Actinidia spp.) is a globally important economic fruit with high nutritional value. Fruit peelability, defined as the mechanical ease of separating the peel from the fruit flesh, is a critical quality trait influencing consumer experience and market competitiveness and has emerged as a critical breeding target in fruit crop improvement programs. The present review systematically synthesized existing studies on kiwifruit peelability, and focused on its evolutionary trajectory, genotypic divergence, quantitative evaluation, possible underlying mechanisms, and artificial manipulation strategies. Kiwifruit peelability research has advanced from early exploratory studies in New Zealand (2010s) to systematic investigations in China (2020s), with milestones including the development of evaluation metrics and the identification of genetic resources. Genotypic variation exists among kiwifruit genera. Several Actinidia eriantha accessions and the novel Actinidia longicarpa cultivar ‘Guifei’ exhibit superior peelability, whereas most commercial Actinidia chinensis and Actinidia deliciosa cultivars exhibit poor peelability. Quantitative evaluation highlights the need for standardized metrics, with “skin-flesh adhesion force” and “peel toughness” proposed as robust, instrument-quantifiable indicators to minimize operational variability. Mechanistically, peelability is speculated to be governed by cell wall polysaccharide metabolism and phytohormone signaling networks. Pectin degradation and differential distribution during fruit development form critical “peeling zones”, whereas ethylene, abscisic acid, and indoleacetic acid may regulate cell wall remodeling and softening, collectively influencing skin-flesh adhesion. Owing to the scarcity of easy-to-peel kiwifruit cultivars, artificial manipulation methods, including manual peeling benchmarking, lye treatment, and thermal peeling, can be employed to further optimize kiwifruit peelability. Currently, shortcomings include incomplete genotype-phenotype characterization, limited availability of easy-peeling germplasms, and a fragmented understanding of the underlying mechanisms. Future research should focus on methodological innovation, germplasm development, and the elucidation of relevant mechanisms. Full article
(This article belongs to the Section Fruit Production Systems)
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21 pages, 2139 KiB  
Review
New Perspectives on Nutraceutical Insulin Sensitizing Agents in the Treatment of Psoriasis and Other Dermatological Diseases
by Pietro Morrone, Francesca Caroppo, Alberto De Pedrini, Alessandro Colletti and Germano Baj
Int. J. Mol. Sci. 2025, 26(15), 7538; https://doi.org/10.3390/ijms26157538 - 4 Aug 2025
Viewed by 140
Abstract
Insulin resistance (IR) plays a pivotal role in the pathogenesis of several dermatological diseases, including psoriasis, acne, acanthosis nigricans, and hidradenitis suppurativa (HS). These conditions are characterized by chronic inflammation, oxidative stress, and metabolic dysfunction, which are exacerbated by IR. This narrative review [...] Read more.
Insulin resistance (IR) plays a pivotal role in the pathogenesis of several dermatological diseases, including psoriasis, acne, acanthosis nigricans, and hidradenitis suppurativa (HS). These conditions are characterized by chronic inflammation, oxidative stress, and metabolic dysfunction, which are exacerbated by IR. This narrative review examines the emerging role of nutraceutical insulin-sensitizing agents (ISAs), including myo-inositol, alpha-lipoic acid, vitamin D, vitamin C, and folic acid, in managing IR-related dermatological disorders. A comprehensive literature search was conducted across Cochrane Library and MEDLINE (1965–May 2025), focusing on clinical trials involving nutraceutical ISAs in dermatological conditions associated with IR. Only human studies published in English were included. Evidence from randomized controlled trials (RCTs) and observational studies suggests that ISAs improve glycemic control, reduce oxidative stress, and modulate inflammatory pathways in IR-related dermatoses. Notably, myo-inositol combined with magnesium and folic acid has demonstrated significant reductions in acne severity, hirsutism, and quality-of-life impairments in women with polycystic ovary syndrome. Similar benefits have been observed in psoriasis and HS, though data remain limited. Nutraceutical ISAs offer a promising adjunctive approach for the management of IR-associated dermatological diseases, potentially addressing both metabolic dysfunction and skin inflammation. However, robust RCTs with long-term follow-up are needed to confirm these preliminary findings and to establish optimal treatment regimens. Full article
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16 pages, 1702 KiB  
Article
Mobile and Wireless Autofluorescence Detection Systems and Their Application for Skin Tissues
by Yizhen Wang, Yuyang Zhang, Yunfei Li and Fuhong Cai
Biosensors 2025, 15(8), 501; https://doi.org/10.3390/bios15080501 - 3 Aug 2025
Viewed by 149
Abstract
Skin autofluorescence (SAF) detection technology represents a noninvasive, convenient, and cost-effective optical detection approach. It can be employed for the differentiation of various diseases, including metabolic diseases and dermatitis, as well as for monitoring the treatment efficacy. Distinct from diffuse reflection signals, the [...] Read more.
Skin autofluorescence (SAF) detection technology represents a noninvasive, convenient, and cost-effective optical detection approach. It can be employed for the differentiation of various diseases, including metabolic diseases and dermatitis, as well as for monitoring the treatment efficacy. Distinct from diffuse reflection signals, the autofluorescence signals of biological tissues are relatively weak, making them challenging to be captured by photoelectric sensors. Moreover, the absorption and scattering properties of biological tissues lead to a substantial attenuation of the autofluorescence of biological tissues, thereby worsening the signal-to-noise ratio. This has also imposed limitations on the development and application of compact-sized autofluorescence detection systems. In this study, a compact LED light source and a CMOS sensor were utilized as the excitation and detection devices for skin tissue autofluorescence, respectively, to construct a mobile and wireless skin tissue autofluorescence detection system. This system can achieve the detection of skin tissue autofluorescence with a high signal-to-noise ratio under the drive of a simple power supply and a single-chip microcontroller. The detection time is less than 0.1 s. To enhance the stability of the system, a pressure sensor was incorporated. This pressure sensor can monitor the pressure exerted by the skin on the detection system during the testing process, thereby improving the accuracy of the detection signal. The developed system features a compact structure, user-friendliness, and a favorable signal-to-noise ratio of the detection signal, holding significant application potential in future assessments of skin aging and the risk of diabetic complications. Full article
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33 pages, 8604 KiB  
Article
Sulforaphane-Rich Broccoli Sprout Extract Promotes Hair Regrowth in an Androgenetic Alopecia Mouse Model via Enhanced Dihydrotestosterone Metabolism
by Laxman Subedi, Duc Dat Le, Eunbin Kim, Susmita Phuyal, Arjun Dhwoj Bamjan, Vinhquang Truong, Nam Ah Kim, Jung-Hyun Shim, Jong Bae Seo, Suk-Jung Oh, Mina Lee and Jin Woo Park
Int. J. Mol. Sci. 2025, 26(15), 7467; https://doi.org/10.3390/ijms26157467 - 1 Aug 2025
Viewed by 382
Abstract
Androgenetic alopecia (AGA) is a common progressive hair loss disorder driven by elevated dihydrotestosterone (DHT) levels, leading to follicular miniaturization. This study investigated sulforaphane-rich broccoli sprout extract (BSE) as a potential oral therapy for AGA. BSE exhibited dose-dependent proliferative and migratory effects on [...] Read more.
Androgenetic alopecia (AGA) is a common progressive hair loss disorder driven by elevated dihydrotestosterone (DHT) levels, leading to follicular miniaturization. This study investigated sulforaphane-rich broccoli sprout extract (BSE) as a potential oral therapy for AGA. BSE exhibited dose-dependent proliferative and migratory effects on keratinocytes, dermal fibroblasts, and dermal papilla cells, showing greater in vitro activity than sulforaphane (SFN) and minoxidil under the tested conditions, while maintaining low cytotoxicity. In a testosterone-induced AGA mouse model, oral BSE significantly accelerated hair regrowth, with 20 mg/kg achieving 99% recovery by day 15, alongside increased follicle length, density, and hair weight. Mechanistically, BSE upregulated hepatic and dermal DHT-metabolizing enzymes (Akr1c21, Dhrs9) and activated Wnt/β-catenin signaling in the skin, suggesting dual actions via androgen metabolism modulation and follicular regeneration. Pharmacokinetic analysis revealed prolonged SFN plasma exposure following BSE administration, and in silico docking showed strong binding affinities of key BSE constituents to Akr1c2 and β-catenin. No systemic toxicity was observed in liver histology. These findings indicate that BSE may serve as a safe, effective, and multitargeted natural therapy for AGA. Further clinical studies are needed to validate its efficacy in human populations. Full article
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15 pages, 2737 KiB  
Article
Thermogenic Activation of Adipose Tissue by Caffeine During Strenuous Exercising and Recovery: A Double-Blind Crossover Study
by Dany Alexis Sobarzo Soto, Diego Ignácio Valenzuela Pérez, Mateus Rossow de Souza, Milena Leite Garcia Reis, Naiara Ribeiro Almeida, Bianca Miarka, Esteban Aedo-Muñoz, Armin Isael Alvarado Oyarzo, Manuel Sillero-Quintana, Andreia Cristiane Carrenho Queiroz and Ciro José Brito
Metabolites 2025, 15(8), 517; https://doi.org/10.3390/metabo15080517 - 1 Aug 2025
Viewed by 267
Abstract
Background/Objectives: To investigate acute caffeine (CAF: 375 mg, ≈4.8 mg/kg body mass) effects on energy expenditure (EE) and substrate kinetics during high-intensity interval exercise in individuals with high (HBAT) versus low (LBAT) brown adipose tissue activity using time-trend polynomial modeling. Methods: This [...] Read more.
Background/Objectives: To investigate acute caffeine (CAF: 375 mg, ≈4.8 mg/kg body mass) effects on energy expenditure (EE) and substrate kinetics during high-intensity interval exercise in individuals with high (HBAT) versus low (LBAT) brown adipose tissue activity using time-trend polynomial modeling. Methods: This is a randomized, double-blind crossover study in which 35 highly-trained males [HBAT-CAF, HBAT-PLA (Placebo), LBAT-CAF, LBAT-PLA] performed 30-min treadmill HIIE. Infrared thermography (IRT) assessed BAT activity by measuring supraclavicular skin temperature (SST). Breath-by-breath ergospirometry measured EE (kcal/min) and carbohydrate (CHO), lipid (LIP), and protein (PTN) oxidation. We applied second- and third-order polynomial regression models to depict the temporal trajectories of metabolic responses. Results: HBAT groups showed 25% higher sustained EE versus LBAT (p < 0.001), amplified by CAF. CHO oxidation exhibited biphasic kinetics: HBAT had 40% higher initial rates (0.75 ± 0.05 vs. 0.45 ± 0.04 g/min; p < 0.001) with accelerated decline (k = −0.21 vs. −0.15/min; p = 0.01). LIP oxidation peaked later in LBAT (40 vs. 20 min in HBAT), with CAF increasing oxidation by 18% in LBAT (p = 0.01). HBAT-CAF uniquely showed transient PTN catabolism (peak: 0.045 g/min at 10 min; k = −0.0033/min; p < 0.001). Conclusions: BAT status determines EE magnitude and substrate-specific kinetic patterns, while CAF exerts divergent modulation, potentiating early glycogenolysis in HBAT and lipolysis in LBAT. The HBAT-CAF synergy triggers acute proteolysis, revealing BAT-mediated metabolic switching. Full article
(This article belongs to the Special Issue Energy Metabolism in Brown Adipose Tissue)
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19 pages, 1159 KiB  
Article
Multifactorial Refractory Acne in Women: Insights from a Case Series Involving Hormonal-, Metabolic-, and Corticosteroid-Related Triggers
by Alexa Florina Bungau, Ruxandra Cristina Marin, Delia Mirela Tit, Gabriela Bungau, Ada Radu, Daciana Elena Branisteanu and Laura Maria Endres
Life 2025, 15(8), 1196; https://doi.org/10.3390/life15081196 - 28 Jul 2025
Viewed by 451
Abstract
Acne vulgaris is a multifactorial inflammatory skin disorder that significantly impairs quality of life and may signal underlying systemic dysfunction, particularly in adult women with treatment-resistant or atypical presentations. This case series presents three clinically and etiologically distinct examples of persistent acne in [...] Read more.
Acne vulgaris is a multifactorial inflammatory skin disorder that significantly impairs quality of life and may signal underlying systemic dysfunction, particularly in adult women with treatment-resistant or atypical presentations. This case series presents three clinically and etiologically distinct examples of persistent acne in female patients, each associated with different contributing factors: long-term topical corticosteroid misuse, polycystic ovary syndrome (PCOS), and metabolic syndrome with autoimmune thyroiditis. All cases underwent comprehensive dermatologic evaluation, endocrine/metabolic assessments, and personalized therapeutic interventions, ranging from corticosteroid withdrawal and barrier repair to hormonal modulation and insulin-sensitizing therapy. Clinical progression was monitored for up to six months, revealing favorable responses in all cases, with substantial lesion clearance and improved skin quality. These real-world cases highlight the importance of an integrative, interdisciplinary diagnostic approach in refractory acne and support the need for individualized, long-term management strategies tailored to underlying systemic contributors. Full article
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17 pages, 451 KiB  
Article
Primary and Recurrent Erysipelas—Epidemiological Patterns in a Single-Centre Retrospective Analysis
by Marta Matych, Agata Ciosek, Karol Miler, Marcin Noweta, Karolina Brzezińska, Małgorzata Sarzała, Joanna Narbutt and Aleksandra Lesiak
J. Clin. Med. 2025, 14(15), 5299; https://doi.org/10.3390/jcm14155299 - 27 Jul 2025
Viewed by 387
Abstract
Background/Objectives: Erysipelas is an acute bacterial skin infection, particularly affecting the lower limbs, with a tendency to recur. Despite its clinical importance, data on demographic and epidemiological risk factors, as well as factors influencing hospitalization, remain limited. This study aimed to analyze the [...] Read more.
Background/Objectives: Erysipelas is an acute bacterial skin infection, particularly affecting the lower limbs, with a tendency to recur. Despite its clinical importance, data on demographic and epidemiological risk factors, as well as factors influencing hospitalization, remain limited. This study aimed to analyze the epidemiological and clinical characteristics of patients hospitalized with primary and recurrent erysipelas, focusing on risk factors contributing to disease onset, recurrence, and prolonged hospitalization. Methods: A retrospective single-center analysis was conducted on 239 patients hospitalized for erysipelas at the Department of Dermatology, Pediatric Dermatology, and Oncology at the Medical University of Lodz. Data collected included demographics, lesion location, laboratory markers, comorbidities, and hospitalization outcomes. Statistical analyses were performed to assess associations between risk factors, disease recurrence, and hospitalization duration. Results: The majority of erysipelas cases (85.4%) involved the lower limbs, with a higher prevalence in men. Upper extremities were mostly affected in women, especially those who had undergone breast cancer surgery. Recurrent erysipelas accounted for 75.7% of cases. Most patients (89.1%) had at least one comorbidity, with hypertension, diabetes type 2 (DM2), and obesity being the most common. Higher white blood cell (WBC) count, obesity, atrial fibrillation (AF), and the need for enoxaparin administration were independently associated with prolonged hospitalization. Dyslipidemia was significantly associated with erysipelas recurrence (p < 0.05). Conclusions: Both primary and recurrent erysipelas are associated with specific risk factors. Recurrent erysipelas may be linked to components of metabolic syndrome, particularly obesity and dyslipidemia, which emerged as a significant risk factor in this study. Hospitalization length may be prolonged by inflammation markers (WBC and CRP) and comorbidities such as AF, obesity, or the need for enoxaparin in patients with elevated thrombosis risk. Further multicenter studies with larger cohorts are needed to assess the impact of demographics, biomarkers, metabolic disorders, and treatment strategies on erysipelas recurrence and outcomes. Awareness of these risk factors is essential for effective prevention, management, and recurrence reduction. Full article
(This article belongs to the Special Issue Clinical Epidemiology of Skin Diseases: 3rd Edition)
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13 pages, 543 KiB  
Article
Subclinical Hypothyroidism in Moderate-to-Severe Psoriasis: A Cross-Sectional Study of Prevalence and Clinical Implications
by Ricardo Ruiz-Villaverde, Marta Cebolla-Verdugo, Carlos Llamas-Segura, Pedro José Ezomo-Gervilla, Jose Molina-Espinosa and Jose Carlos Ruiz-Carrascosa
Diseases 2025, 13(8), 237; https://doi.org/10.3390/diseases13080237 - 25 Jul 2025
Viewed by 218
Abstract
Background: Psoriasis is a chronic inflammatory skin disease linked to systemic comorbidities, including metabolic, cardiovascular, and autoimmune disorders. Thyroid dysfunction, particularly hypothyroidism, has been observed in patients with moderate-to-severe psoriasis, suggesting possible shared inflammatory pathways. Objectives: This study aims to explore [...] Read more.
Background: Psoriasis is a chronic inflammatory skin disease linked to systemic comorbidities, including metabolic, cardiovascular, and autoimmune disorders. Thyroid dysfunction, particularly hypothyroidism, has been observed in patients with moderate-to-severe psoriasis, suggesting possible shared inflammatory pathways. Objectives: This study aims to explore the relationship between psoriasis and thyroid dysfunction in adults with moderate-to-severe psoriasis undergoing biologic therapy to determine whether psoriasis predisposes individuals to thyroid disorders and to identify demographic or clinical factors influencing this association. Materials and Methods: A cross-sectional study included adult patients with moderate-to-severe psoriasis receiving biologic therapy, recruited from the Psoriasis Unit at the Dermatology Department of Hospital Universitario San Cecilio in Granada, Spain, from 2017 to 2023. Patients with mild psoriasis or those treated with conventional systemic therapies were excluded. The data collected included demographics and clinical characteristics, such as age, sex, BMI (body mass index), and psoriasis severity (psoriasis severity was evaluated using the Psoriasis Area Severity Index (PASI), body surface area (BSA) involvement, Investigator’s Global Assessment (IGA), pruritus severity using the Numerical Rating Scale (NRS), and impact on quality of life through the Dermatology Life Quality Index (DLQI)). Thyroid dysfunction, including hypothyroidism and subclinical hypothyroidism, was assessed based on records from the Endocrinology Department. Results: Thyroid dysfunction was found in 4.2% of patients, all classified as hypothyroidism, primarily subclinical. The affected patients were generally older, with a mean age of 57.4 years. No significant differences in psoriasis severity (PASI, BSA) or treatment response were observed between patients with and without thyroid dysfunction. Conclusion: Our findings suggest hypothyroidism is the main thyroid dysfunction in psoriatic patients, independent of psoriasis severity. The lack of impact on psoriasis severity suggests hypothyroidism may be an independent comorbidity, warranting further research into shared inflammatory mechanisms. Full article
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26 pages, 764 KiB  
Review
The Role of Oxidative Stress in Skin Disorders Associated with Alcohol Dependency and Antioxidant Therapies
by Joanna Wróblewska, Anna Długosz, Damian Czarnecki, Wioletta Tomaszewicz, Błażej Błaszak, Joanna Szulc and Weronika Wróblewska
Molecules 2025, 30(15), 3111; https://doi.org/10.3390/molecules30153111 - 25 Jul 2025
Viewed by 510
Abstract
Alcohol dependency is a complex and chronic condition that negatively impacts multiple organ systems, including the skin. A key pathological factor in this process is oxidative stress, leading to progressive cellular damage, chronic inflammation, and accelerated cutaneous aging. Alcohol metabolism generates reactive oxygen [...] Read more.
Alcohol dependency is a complex and chronic condition that negatively impacts multiple organ systems, including the skin. A key pathological factor in this process is oxidative stress, leading to progressive cellular damage, chronic inflammation, and accelerated cutaneous aging. Alcohol metabolism generates reactive oxygen species (ROS), which overwhelm endogenous antioxidant defenses and contribute to a range of skin alterations, including nonspecific changes such as xerosis, erythema, and wrinkle formation, as well as inflammatory and neoplastic skin disorders. Additionally, alcohol-induced alterations of the skin microbiome may further exacerbate skin barrier dysfunction and inflammatory responses. This review explores the biochemical mechanisms and skin microbiome alterations linking alcohol-induced oxidative stress to skin damage and disease. Furthermore, it evaluates the therapeutic potential of antioxidant-based interventions, both natural and synthetic. Antioxidants may offer protective and regenerative effects by scavenging free radicals, modulating inflammatory responses, and enhancing skin barrier function. The paper aims to provide a comprehensive overview of the molecular and microbial interplay between alcohol, oxidative stress, and skin health, while identifying future directions for targeted antioxidant therapy in individuals with alcohol dependency. Full article
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16 pages, 764 KiB  
Review
Biotin Supplementation—The Cause of Hypersensitivity and Significant Interference in Allergy Diagnostics
by Kinga Lis
Nutrients 2025, 17(15), 2423; https://doi.org/10.3390/nu17152423 - 24 Jul 2025
Viewed by 412
Abstract
Biotin (vitamin B7) is a common, naturally occurring water-soluble vitamin. It belongs to the broad group of B vitamins. It is a common ingredient in dietary supplements, cosmetics, medicines, and parapharmaceutical preparations administered orally or applied topically (to the skin, hair, nails). The [...] Read more.
Biotin (vitamin B7) is a common, naturally occurring water-soluble vitamin. It belongs to the broad group of B vitamins. It is a common ingredient in dietary supplements, cosmetics, medicines, and parapharmaceutical preparations administered orally or applied topically (to the skin, hair, nails). The problem of the relationship between vitamin B supplementation and sensitivity seems to be multi-threaded. There is little literature data that would confirm that oral vitamin B supplementation or local exposure to biotin is a significant sensitizing factor. Moreover, it seems that allergy to vitamin B7 is very rare. It is possible, however, that the relationship between biotin and hypersensitivity is not limited to its direct action, but results from its essential metabolic function. Vitamin B7, as a cofactor of five carboxylases, affects the main pathways of cellular metabolism. Both deficiency and excess of biotin can result in metabolic disorders, which can have a significant impact on the homeostasis of the entire organism, including the efficient functioning of the immune system. Dysregulation of immune systems leads to its dysfunctional functioning, which can also lead to sensitization to various environmental antigens (allergens). Biotin is also used as an element of some methodological models in immunochemical tests (in vitro diagnostics), including methods used to measure the concentration of immunoglobulin E (IgE), both total (tIgE) and allergen-specific (sIgE). For this reason, vitamin B7 supplementation can be a significant interfering factor in some immunochemical tests, which can lead to false laboratory test results, both false positive and false negative, depending on the test format. This situation can have a direct impact on the quality and effectiveness of diagnostics in various clinical situations, including allergy diagnostics. This review focuses on the role of biotin in allergic reactions, both as a causative factor (allergen/hapten), a factor predisposing to the development of sensitization to various allergens, and an interfering factor in immunochemical methods used in laboratory diagnosis of hypersensitivity reactions and how it can be prevented. Full article
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15 pages, 1666 KiB  
Article
Serum Metabolomic Profiling Reveals Differences Between Systemic Sclerosis Patients with Polyneuropathy
by Kristine Ivanova, Theresa Schiemer, Annija Vaska, Nataļja Kurjāne, Viktorija Kenina and Kristaps Klavins
Int. J. Mol. Sci. 2025, 26(15), 7133; https://doi.org/10.3390/ijms26157133 - 24 Jul 2025
Viewed by 222
Abstract
Metabolome studies have already been carried out in patients with systemic sclerosis (SSc). However, polyneuropathy (PNP) as a complication of SSc has been overlooked in these studies. To the best of our knowledge, this is the first study to examine metabolic changes in [...] Read more.
Metabolome studies have already been carried out in patients with systemic sclerosis (SSc). However, polyneuropathy (PNP) as a complication of SSc has been overlooked in these studies. To the best of our knowledge, this is the first study to examine metabolic changes in SSc patients with PNP. Patients with SSc (n = 62) and a healthy control group (HC) (n = 72) were recruited from two Latvian hospitals. Blood plasma samples were collected and analyzed using an LC-MS-based targeted metabolomics workflow. Our plasma sample cohort consisted of 62 patients with SSc, 42% of whom had PNP. Differences between SSc patients and the HC group with fold changes > 2 were observed for aspartic acid, glutamic acid, valine, and citrulline, all of which were reduced. In contrast to the SSc to HC discrimination, no metabolites had a high fold change; only minor changes were observed using FC > 1.3. We identified elevated concentrations of kynurenine, asparagine, and alanine. Changes in metabolite regulation in patients with SSc, compared to controls, are not identical to those observed in SSc patients with PNP, with elevated concentrations of kynurenine and alanine specific to the SSc subgroup. SSc patients with PNP should probably be considered a distinct population with important metabolomic features. Full article
(This article belongs to the Section Molecular Pathology, Diagnostics, and Therapeutics)
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15 pages, 1669 KiB  
Article
Prospective Evaluation of a Thermogenic Topical Cream-Gel Containing Caffeine, Genistein, and Botanical Extracts for the Treatment of Moderate to Severe Cellulite
by Vittoria Giulia Bianchi, Matteo Riccardo Di Nicola, Anna Cerullo, Giovanni Paolino and Santo Raffaele Mercuri
Cosmetics 2025, 12(4), 155; https://doi.org/10.3390/cosmetics12040155 - 21 Jul 2025
Viewed by 842
Abstract
Cellulite, characterised by cutaneous dimpling, surface irregularities, and dermal atrophy skin texture, affects up to 90% of post-pubertal females. It is a multifactorial condition involving anatomical, hormonal, and metabolic components, primarily affecting the thighs and buttocks. Despite numerous available therapies, there remains a [...] Read more.
Cellulite, characterised by cutaneous dimpling, surface irregularities, and dermal atrophy skin texture, affects up to 90% of post-pubertal females. It is a multifactorial condition involving anatomical, hormonal, and metabolic components, primarily affecting the thighs and buttocks. Despite numerous available therapies, there remains a high demand for effective, non-invasive, and well-tolerated treatment options. This single-centre, in vivo, prospective study evaluated the efficacy of a non-pharmacological, thermogenic topical cream-gel combined with manual massage in women with symmetrical grade II or III cellulite (Nürnberger–Müller scale). A total of 56 female participants (aged 18–55 years) were enrolled and instructed to apply the product twice daily for eight weeks to the thighs and buttocks. Efficacy was assessed using instrumental skin profilometry (ANTERA® 3D CS imaging system), dermatological clinical grading, and patient self-assessment questionnaires. Quantitative analysis showed a mean reduction of 23.5% in skin indentation volume (p < 0.01) and a mean decrease of 1.1 points on the cellulite severity scale by week 8. Patient-reported outcomes revealed 85.7% satisfaction with visible results and 91% satisfaction with product texture and ease of application. Dermatological evaluation confirmed no clinically significant adverse reactions, and only 3.5% of participants reported mild and transient skin sensitivity. These findings suggest that this topical cream-gel formulation, when used in conjunction with manual massage, represents a well-tolerated and non-invasive option for the cosmetic improvement of moderate to severe cellulite. Full article
(This article belongs to the Section Cosmetic Dermatology)
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33 pages, 3091 KiB  
Review
Lipidome Complexity in Physiological and Pathological Skin Pigmentation
by Emanuela Bastonini, Daniela Kovacs, Vittoria Maresca, Monica Ottaviani, Anna Di Nardo, Enrica Flori, Giorgia Cardinali and Stefania Briganti
Int. J. Mol. Sci. 2025, 26(14), 6785; https://doi.org/10.3390/ijms26146785 - 15 Jul 2025
Viewed by 356
Abstract
Skin pigmentation results from complex cellular interactions and is influenced by genetic, environmental, and metabolic factors. Emerging evidence highlights the multiple pathways by which lipids regulate melanogenesis and points to lipid metabolism and signaling as key players in this process. Lipidomics is a [...] Read more.
Skin pigmentation results from complex cellular interactions and is influenced by genetic, environmental, and metabolic factors. Emerging evidence highlights the multiple pathways by which lipids regulate melanogenesis and points to lipid metabolism and signaling as key players in this process. Lipidomics is a high-throughput omics approach that enables detailed characterization of lipid profiles, thus representing a valid tool for evaluating skin lipid functional role in both physiological melanogenesis and pigmentary disorders. The use of lipidomics to gain a deeper comprehension of the role of lipids in skin pigmentation is still an evolving field, but it has allowed the identification of significant lipid dysregulation in several pigmentary pathologies. This review summarizes the current knowledge on the involvement of lipids in skin pigmentation, focusing on lipid profile alterations described in hyper- and hypopigmentary disorders such as post-inflammatory hyperpigmentation, melasma, solar lentigo, and vitiligo. Lipidomic profiling reveals disease-specific alterations supporting the pivotal role of lipid signaling in the physiopathological mechanisms of melanogenesis. These findings provide insights into disease pathogenesis and show promise for the discovery of biomarkers and innovative therapeutic strategies for pigmentary disorders. Full article
(This article belongs to the Special Issue Pigment Cells: From Biology to Medicine)
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18 pages, 2995 KiB  
Article
Improving the Surface Color and Delaying Softening of Peach by Minimizing the Harmful Effects of Ethylene in the Package
by Hongsheng Zhou, Siyu Ma, Jing Zhao, Ying Gao, Wen Huang, Yingtong Zhang, Jun Ling, Qian Zhou and Pengxia Li
Foods 2025, 14(14), 2472; https://doi.org/10.3390/foods14142472 - 15 Jul 2025
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Abstract
Peach is a typical ethylene-sensitive fruit, and low levels of ethylene can accelerate softening during storage. In this study, we used an ethylene absorbent (EA) and 1-methylcyclopropene (1-MCP) to minimize the detrimental impact of ethylene on the quality of peaches in modified atmosphere [...] Read more.
Peach is a typical ethylene-sensitive fruit, and low levels of ethylene can accelerate softening during storage. In this study, we used an ethylene absorbent (EA) and 1-methylcyclopropene (1-MCP) to minimize the detrimental impact of ethylene on the quality of peaches in modified atmosphere packaging (MAP), and analyzed fruit firmness, color change, anthocyanin content, and the expression patterns of cell wall metabolism-related genes and anthocyanin synthesis-related genes during storage. The results showed that ethylene in the MAP package decreased the firmness and total anthocyanin content of the peaches, while MAP combined with EA (MAP+EA) treatment effectively maintained the firmness of the peaches and counteracted the inhibition of anthocyanin accumulation in the peach skin by ethylene. In addition, the peaches treated with MAP+EA exhibited higher a* values, lower weight loss, and lower activities of cell-wall-modifying enzymes. Meanwhile, MAP+EA treatment also significantly increased the expression of color-related genes such as flavonoid 3′-hydroxylase gene (F3′H), dihydroflavonol 4-reductase (DFR), anthocyanidin synthase (ANS), and UDP-flavonoid 3-O-glucosyltransferase (UFGT). Furthermore, a good synergistic effect was observed between 1-MCP and EA in delaying softening and promoting coloring of peach fruit in the MAP package. The combination of 1-MCP and EA treatment may have the potential to alleviate softening and improve the color and quality of post-harvest fruit during storage. Full article
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