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Rizk SKA, Gaber A, Hamdy H, Labeeb A, Fouda E, Hosny A, El Derbaly SA. Concurrent genotyping and expression of NLRP3 inflammasome in pityriasis versicolor patient's skin lesions. Arch Dermatol Res 2024; 316:501. [PMID: 39093484 DOI: 10.1007/s00403-024-03221-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 07/05/2024] [Accepted: 07/06/2024] [Indexed: 08/04/2024]
Abstract
The goal of this study is to investigate the impact of the rs35829419 SNP on the serum level of NLRP3, and to assess the relationship between NLRP3 and its SNP and vulnerability to Pityriasis versicolor. Pityriasis versicolor (PV) is one of the most frequent skin conditions linked to skin pigmentation changes. Malassezia plays a key role in the pathogenesis of PV. A case-control study, 50 patients with pityriasis versicolor and 44 healthy controls. Real-time PCR was used to genotype NLRP3 (rs35829419) and ELISA assay of NLRP3 levels in tissue samples. There was a significantly higher median NLPR3 levels in PV patients than controls. A significant predominance of A allele of Q 705 K was in patients than controls. The risk of having the disease in the presence of A allele is nearly 10 times than having C allele. In PV patients, there was a significant relationship between NLPR3 levels and Q 705 K genotypes with higher NLPR3 levels in AA genotype. A potential correlation between PV and the Q705K polymorphism, pointing to evidence of NLRP3 alteration in PV patients. The NLRP3 inflammasome may be an appropriate therapeutic target for Malassezia-associated skin disorders.
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Affiliation(s)
- Sara Kamal AbdelMaksoud Rizk
- Medical Biochemistry and Molecular Biology Department, Faculty of medicine, Menoufia University, Shebin Elkom, Egypt.
| | - Azza Gaber
- Department of Dermatology, Andrology and STDs, Faculty of Medicine, Menoufia University, Shebin Elkom, Egypt
| | - Hadir Hamdy
- Dermatology and Andrology Department in Dekernes General Hospital, Dakahlia Governorate, el dakahleya, Egypt
| | - Azza Labeeb
- Microbiology and immunology Department, Faculty of medicine, Menoufia University, Shebin Elkom, Egypt
| | - Eman Fouda
- Department of Chemistry, Biochemistry Division, Faculty of Science, Menoufia University, Shebin Elkom, Egypt
| | - Ammar Hosny
- Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - Sara A El Derbaly
- Medical Biochemistry and Molecular Biology Department, Faculty of medicine, Menoufia University, Shebin Elkom, Egypt
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Liu MM, Zhao YJ, Boekhout T, Wang QM. Exploring the antibiofilm efficacy of cinnamaldehyde against Malassezia globosa associated pityriasis versicolor. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 130:155542. [PMID: 38823343 DOI: 10.1016/j.phymed.2024.155542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/03/2024] [Accepted: 03/15/2024] [Indexed: 06/03/2024]
Abstract
BACKGROUND Malassezia globosa is a commensal basidiomycetous yeast occurring on the skin that causes pityriasis versicolor (PV) and seborrheic dermatitis, but that has also been implicated in other dermatoses. Cinnamaldehyde (CM) has antibacterial, antioxidant, and anti-inflammatory activities, but the effect of CM on M. globosa-infected PV has not been clarified. PURPOSE The study aimed to investigate the possible antifungal and antibiofilm activities of CM against M. globosa-infected PV in vivo and in vitro. METHODS The broth microdilution method was used to determine the minimum inhibitory concentration (MIC) of CM against M. globosa. The crystal violet staining assay and XTT assay were used to investigate the inhibition of CM on biofilm formation and the eradication of mature biofilms. The visualizations of the biofilm and cell distribution in the biofilm matrix were performed with a scanning electron microscope and confocal laser scanning microscope. The kits of antioxidant kinase were used to determine the activities of oxidative stress markers in M. globosa-stimulated HaCaT cells. Western blot assays were used to evaluate the role of TLR2/NF-κB in vitro. Furthermore, the protective effect of CM was assessed in M. globosa-associated PV mice. The expressions of inflammatory cytokines and apoptosis were screened using ELISA assays. The expressions of interleukin-6 and tumor necrosis factor-α were measured by an immunohistochemistry method in vivo. RESULTS Our results showed that the MIC of CM against planktonic cells of M. globosa was 4 µg/ml and treatment with 20 × MIC CM eradicated mature biofilms of M. globosa. In vitro, after CM treatment the levels of oxidative stress indicators (i.e., superoxide dismutase, catalase, glutathione) significantly increased, while the levels of malondialdehyde decreased. In addition, the expression of TLR2/NF-κB in HaCaT cells was significantly reduced after CM treatment. On the other hand, an in vivo therapeutic effect of CM was assessed against M. globosa-infected mice. The fungal load on the skin decreased after treatment with CM compared to the M. globosa-infected group. In addition, the uninfected animals showed a normal skin structure, whereas, the M. globosa-infected mice showed extensive infiltration of neutrophils in skin tissues that improved after treatment with CM. Meanwhile, the levels of inflammatory and apoptotic factors improved after CM treatment. CONCLUSION Our results showed that CM inhibits the biofilm formation of M. globosa and eradicates mature biofilms of M. globosa. Treatment with CM significantly decreased oxidative stress, apoptosis, and inflammatory markers in the skin tissue and HaCaT cells. Hence, this study suggests that CM is a good candidate therapeutic agent against M. globosa-induced PV infections because of its antifungal, antibiofilm, and anti-inflammatory properties.
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Affiliation(s)
- Miao-Miao Liu
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding 071002, Hebei, China
| | - Yu-Jing Zhao
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding 071002, Hebei, China
| | - Teun Boekhout
- College of Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Qi-Ming Wang
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding 071002, Hebei, China.
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Gu X, Li Z, Su J. Air pollution and skin diseases: A comprehensive evaluation of the associated mechanism. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 278:116429. [PMID: 38718731 DOI: 10.1016/j.ecoenv.2024.116429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/28/2024] [Accepted: 05/03/2024] [Indexed: 05/26/2024]
Abstract
Air pollutants deteriorate the survival environment and endanger human health around the world. A large number of studies have confirmed that air pollution jeopardizes multiple organs, such as the cardiovascular, respiratory, and central nervous systems. Skin is the largest organ and the first barrier that protects us from the outside world. Air pollutants such as particulate matter (PM), polycyclic aromatic hydrocarbons (PAHs), volatile organic compounds (VOCs) will affect the structure and function of the skin and bring about the development of inflammatory skin diseases (atopic dermatitis (AD), psoriasis), skin accessory diseases (acne, alopecia), auto-immune skin diseases (cutaneous lupus erythematosus(CLE) scleroderma), and even skin tumors (melanoma, basal cell carcinoma (BCC), squamous-cell carcinoma (SCC)). Oxidative stress, skin barrier damage, microbiome dysbiosis, and skin inflammation are the pathogenesis of air pollution stimulation. In this review, we summarize the current evidence on the effects of air pollution on skin diseases and possible mechanisms to provide strategies for future research.
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Affiliation(s)
- Xiaoyu Gu
- Department of Dermatology | Hunan Engineering Research Center of Skin Health and Disease | Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha 410008, China; National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Changsha 410008, China; National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha 410008, China; Furong Laboratory, Changsha, Hunan 410008, China
| | - Zhengrui Li
- XiangYa School of Medicine, Central South University, Changsha 410008, China
| | - Juan Su
- Department of Dermatology | Hunan Engineering Research Center of Skin Health and Disease | Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha 410008, China; National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Changsha 410008, China; National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha 410008, China; Furong Laboratory, Changsha, Hunan 410008, China.
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Ali S, Khan N, Tang Y. Epigenetic marks for mitigating abiotic stresses in plants. JOURNAL OF PLANT PHYSIOLOGY 2022; 275:153740. [PMID: 35716656 DOI: 10.1016/j.jplph.2022.153740] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 03/02/2022] [Accepted: 05/29/2022] [Indexed: 06/15/2023]
Abstract
Abiotic stressors are one of the major factors affecting agricultural output. Plants have evolved adaptive systems to respond appropriately to various environmental cues. These responses can be accomplished by modulating or fine-tuning genetic and epigenetic regulatory mechanisms. Understanding the response of plants' molecular features to abiotic stress is a priority in the current period of continued environmental changes. Epigenetic modifications are necessary that control gene expression by changing chromatin status and recruiting various transcription regulators. The present study summarized the current knowledge on epigenetic modifications concerning plant responses to various environmental stressors. The functional relevance of epigenetic marks in regulating stress tolerance has been revealed, and epigenetic changes impact the effector genes. This study looks at the epigenetic mechanisms that govern plant abiotic stress responses, especially DNA methylation, histone methylation/acetylation, chromatin remodeling, and various metabolites. Plant breeders will benefit from a thorough understanding of these processes to create alternative crop improvement approaches. Genome editing with clustered regularly interspaced short palindromic repeat/CRISPR-associated proteins (CRISPR/Cas) provides genetic tools to make agricultural genetic engineering more sustainable and publicly acceptable.
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Affiliation(s)
- Shahid Ali
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, Guangdong Province, China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China.
| | - Naeem Khan
- Department of Agronomy, Institute of Food and Agricultural Sciences, University of Florida, FL, 32611, USA
| | - Yulin Tang
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, Guangdong Province, China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China.
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Georgescu SR, Mitran CI, Mitran MI, Matei C, Popa GL, Erel O, Tampa M. Thiol-Disulfide Homeostasis in Skin Diseases. J Clin Med 2022; 11:jcm11061507. [PMID: 35329832 PMCID: PMC8954849 DOI: 10.3390/jcm11061507] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 12/22/2022] Open
Abstract
Oxidative stress represents the imbalance between oxidants and antioxidants and has been associated with a wide range of diseases. Thiols are the most important compounds in antioxidant defense. There is an equilibrium between thiols and their oxidized forms, disulfides, known as dynamic thiol-disulfide homeostasis (TDH). In 2014, Erel and Neselioglu developed a novel automated assay to measure thiol and disulfide levels. Subsequently, many researchers have used this simple, inexpensive and fast method for evaluating TDH in various disorders. We have reviewed the literature on the role of TDH in skin diseases. We identified 26 studies that evaluated TDH in inflammatory diseases (psoriasis, seborrheic dermatitis, atopic dermatitis, vitiligo, acne vulgaris and rosacea), allergic diseases (acute and chronic urticaria) and infectious diseases (warts, pityriasis rosea and tinea versicolor). The results are heterogeneous, but in most cases indicate changes in TDH that shifted toward disulfides or toward thiols, depending on the extent of oxidative damage.
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Affiliation(s)
- Simona Roxana Georgescu
- Department of Dermatology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania; (S.R.G.); (C.M.); (M.T.)
- Department of Dermatology, ‘Victor Babes’ Clinical Hospital for Infectious Diseases, 030303 Bucharest, Romania
| | - Cristina Iulia Mitran
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania;
| | - Madalina Irina Mitran
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania;
- Correspondence: (M.I.M.); (G.L.P.)
| | - Clara Matei
- Department of Dermatology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania; (S.R.G.); (C.M.); (M.T.)
| | - Gabriela Loredana Popa
- Department of Parasitology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania
- Correspondence: (M.I.M.); (G.L.P.)
| | - Ozcan Erel
- Biochemistry Laboratory, Ankara City Hospital, Ankara 06800, Turkey;
- Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara 06010, Turkey
| | - Mircea Tampa
- Department of Dermatology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania; (S.R.G.); (C.M.); (M.T.)
- Department of Dermatology, ‘Victor Babes’ Clinical Hospital for Infectious Diseases, 030303 Bucharest, Romania
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Trüeb RM. Oxidative stress and its impact on skin, scalp and hair. Int J Cosmet Sci 2021; 43 Suppl 1:S9-S13. [PMID: 34424547 DOI: 10.1111/ics.12736] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 07/08/2021] [Accepted: 07/19/2021] [Indexed: 01/13/2023]
Abstract
Oxidative stress is an unbalanced condition in which the tissues of the body are not sufficiently able to counteract either exogenous or endogenous sources of reactive oxygen species. Oxidative stress is strongly associated with ageing, both local and systemic, as well as a wide range of local health conditions. This review focuses on the oxidative stress data known for skin, scalp and hair. This oxidative stress may be the 'currency' by which an unhealthy scalp leads to deleterious consequences to the hair. The ramifications of this scalp oxidative stress to normal hair elongation, retention and replacement are discussed.
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Affiliation(s)
- Ralph M Trüeb
- Center for Dermatology and Hair Diseases, Wallisellen, Switzerland
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Metin MS, Elmas ÖF, Demirbaş A, Erel Ö, Atasoy M, Türsen Ü, Lotti T. The role of oxidative stress in onychomycosis: Thiol/disulphide homeostasis. Mycoses 2021; 64:947-953. [PMID: 33964024 DOI: 10.1111/myc.13299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/01/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVES Onychomycosis is the general term to define fungal nail infections that arise from dermatophytes, non-dermatophytic moulds and yeasts. Thiol/disulphide homeostasis is a new indicator of oxidative stress. In this study, we aimed to investigate the role of thiol/disulphide balance in the pathogenesis of onychomycosis. METHODS This cross-sectional study included adult patients with onychomycosis who were admitted to the dermatology department and healthy adult volunteers without any dermatologic or systemic condition. The patients and controls were evaluated in terms of native thiol, total thiol, and disulphide levels, and disulphide/native thiol, disulphide/total thiol and native thiol/total thiol ratios. The possible association between these parameters and clinical subtypes of onychomycosis and demographic characteristics was also investigated. RESULTS A total of 52 patients with onychomycosis and 50 healthy subjects were enrolled in the study. The patient group showed lower levels of total thiol, native thiol and native thiol/total thiol ratio, and higher ratios of disulphide/native thiol and disulphide/total thiol. No statistically significant relationship was found between the parameters, clinical subtypes of onychomycosis and demographic characteristics (p > .05). CONCLUSION Patients with onychomycosis showed a shifted thiol/disulphide homeostasis towards oxidative stress with a reduction in thiols and an increase in disulphide/native thiol, and disulphide/total thiol ratios. These findings may indicate the role of oxidative stress in the pathogenesis of onychomycosis.
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Affiliation(s)
- Mahmut Sami Metin
- Department of Dermatology, Adana Kozan State Hospital, Adana, Turkey
| | - Ömer Faruk Elmas
- Department of Dermatology, Kırıkkale University, Kırıkkale, Turkey
| | - Abdullah Demirbaş
- Department of Dermatology, Kütahya Health Science University, Evliya Çelebi Training and Research Hospital, Kütahya, Turkey
| | - Özcan Erel
- Department of Medical Biochemistry, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Mustafa Atasoy
- Department of Dermatology, Health Science University, Kayseri City Hospital, Kayseri, Turkey
| | - Ümit Türsen
- Department of Dermatology, Mersin University, Mersin, Turkey
| | - Torello Lotti
- Department of Dermatology, Guglielmo Marconi University, Rome, Italy
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Tosti A, Schwartz J. Role of Scalp Health in Achieving Optimal Hair Growth and Retention. Int J Cosmet Sci 2021; 43 Suppl 1:S1-S8. [PMID: 33932025 DOI: 10.1111/ics.12708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/21/2021] [Accepted: 04/27/2021] [Indexed: 11/28/2022]
Abstract
We have conducted a thorough review of the literature to assess the evidence for supporting a cause-and-effect linkage between scalp condition and resultant hair condition. Over 20 epidemiological studies have been published covering a wide range of abnormal scalp conditions in which consequent impacts to the hair have been documented. A treatment study was conducted to demonstrate not only that impaired scalp condition led to impaired hair quality but that the impacts to hair are reversible upon normalization of the scalp condition. A proposed explanation involves the impact of scalp oxidative stress, which is part of the etiology of these scalp conditions as well as normal aging, in interfering with the normal keratinization of the pre-emergent hair cuticle. This perturbed cuticle impedes normal fiber anchorage and emerges more brittle and fragile than normal cuticle leading to accelerated physical degradation, mirroring the effects of chronological aging of the hair fiber. The consequences of the rapid cuticle degradation result in hair that is more vulnerable to mechanical insults and compromised overall quality.
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Affiliation(s)
- Antonella Tosti
- Fredric Brandt Endowed Professor, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami, USA
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Guo Q, Liang F, Tian L, Schikowski T, Liu W, Pan X. Ambient air pollution and the hospital outpatient visits for eczema and dermatitis in Beijing: a time-stratified case-crossover analysis. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2019; 21:163-173. [PMID: 30632581 DOI: 10.1039/c8em00494c] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
BACKGROUND Eczema and dermatitis are a group of common skin conditions with multiple risk factors. Evidence of the effects of air pollutants on eczema and dermatitis remains limited. This study aimed to investigate the effects of short-term exposure to air pollution on eczema and dermatitis in Beijing. METHODS A time-stratified case-crossover design was used to assess the associations between short-term changes in air pollution and the hospital outpatient visits for eczema and dermatitis in Beijing. RESULTS A total of 157 595 outpatient visits for eczema and dermatitis were recorded from April 1, 2012 to April 30, 2014. All pollutants showed significant positive associations with the number of outpatient visits for eczema and dermatitis on lag 0 (the current day). Per IQR increase in PM2.5, PM10, NO2 and SO2 was associated with 3.81% (95% CI: 2.92-4.7%), 3.18% (95% CI: 2.39-3.97%), 5.43% (95% CI: 4.43-6.43%) and 5.57% (95% CI: 4.55-6.58%) increases in outpatient visits for eczema and dermatitis on lag 0. Associations of air pollutants with eczema and dermatitis outpatient visits varied with the seasons and were stronger among older people and females. Also, an association of consecutive days' high concentration pollution with increased outpatient visits was observed. CONCLUSIONS Exposure to air pollution increases the exacerbation of eczema and dermatitis and stronger positive associations between air pollutants and outpatient visits for eczema and dermatitis were found among the aged, females and when high concentration air pollution occurs continuously.
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Affiliation(s)
- Qun Guo
- Department of Occupational and Environmental Health, School of Public Health, Peking University, Xueyuan Road 38, Haidian District, Beijing 100191, China.
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The effect of tinea versicolor on thiol/disulphide homeostasis. Postepy Dermatol Alergol 2018; 35:299-303. [PMID: 30008649 PMCID: PMC6041702 DOI: 10.5114/ada.2018.76227] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 07/25/2017] [Indexed: 11/25/2022] Open
Abstract
Introduction Tinea versicolor is a superficial fungal infection caused by Malassezia spp. Malassezia spp. is a member of the normal human skin flora. It becomes a pathogen by transforming from the yeast form to the mycelium form. The oxidant/antioxidant homeostasis may be responsible for this. Thiol/disulphide homeostasis is a new marker indicating oxidative stress. This homeostasis is affected in many illnesses. Aim To investigate the thiol/disulphide homeostasis in patients with tinea versicolor. Material and methods Forty-two patients with tinea versicolor (median age: 36 years, min.–max.: 19–58) and 36 healthy controls (median age: 32 years, min.–max.: 18–60) were included in the trial. The levels of native thiol, disulphide, and total thiol were measured by an automated method in the patient and control groups. Disulphide/total thiol, disulphide/native thiol and native thiol/total thiol rates were calculated as percentage. Results For the patient group and the control group, the native thiol levels were found to be 464.32 ±51.48 mmol/l and 465.18 ±51.32 mmol/l, disulphide levels – 19.80 ±7.08 mmol/l and 21.27 ±8.90 mmol/l, total thiol levels – 503.92 ±53.65 mmol/l and 508.07 ±56.59 mmol/l, respectively. No statistical difference was detected between the two groups. Conclusions Thiol/disulphide homeostasis was not affected in tinea versicolor. According to our findings, oxidative stress seems to have no role in the pathogenesis of tinea versicolor.
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Trüeb RM, Henry JP, Davis MG, Schwartz JR. Scalp Condition Impacts Hair Growth and Retention via Oxidative Stress. Int J Trichology 2018; 10:262-270. [PMID: 30783333 PMCID: PMC6369642 DOI: 10.4103/ijt.ijt_57_18] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Conventionally, the medical focus has been either on hair loss or the condition of the scalp in terms of specific dermatological diseases. Indeed, the proximate structural arrangement of the scalp and hair leads to an interdependent relationship between the two. While protective benefits of the hair to the scalp are obvious, the role of the scalp as an incubatory environment for the preemergent hair fiber has largely been ignored. In fact, there is a wealth of observational data on specific dermatological conditions of the scalp providing evidence for the role of the scalp condition in supporting the production of healthy hair. Oxidative stress, the inability of the body to sufficiently counteract the sources of oxidation, is prevalent in many skin conditions, including normal skin aging. On the scalp, the hair appears to be impacted prior to emergence, and oxidative stress appears to play a role in premature hair loss. The scalp commensal organism, Malassezia, has been recognized to be a source of oxidative damage. Therefore, hair care products, specifically shampoos, with active Malassezia inhibitory agents, such as zinc pyrithione, tend to reduce premature hair loss, besides the known benefits in treating specific dermatologic scalp pathologies, and therefore should represent an integral part of every treatment regimen for hair loss, even in individuals not showing symptoms of scalp pathologies.
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Affiliation(s)
- Ralph M Trüeb
- Center for Dermatology and Hair Diseases, University of Zurich, Wallisellen, Switzerland
| | - Jim P Henry
- The Procter and Gamble Company, Cincinnati, OH, USA
| | - Mike G Davis
- The Procter and Gamble Company, Cincinnati, OH, USA
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Abstract
In contrast to the skin, aging of the hair has seemingly only recently found the attention of dermatological meetings, mainly promoted by the cosmetic industry for marketing purposes. In fact, basic scientists interested in the biology of hair growth and pigmentation have for some time already exposed the hair follicle as a highly accessible model with unique opportunities for the study of age-related effects. As a result, the science of hair aging focuses on two main streams of interest: the esthetic problem of aging hair and its management, in terms of age-related effects on hair color, quantity, and quality; and the biological problem of aging hair, in terms of microscopic, biochemical, and molecular changes underlying the aging process. Ultimately, the aim of hair anti-aging is to delay, lessen, or reverse the effects of aging on hair. According to the complex nature of the aging process, the treatment for lifetime scalp and hair health has to be holistic to include the multitude of contributing factors in a polyhedral and patient-specific manner. It comprises both medical treatments and hair cosmetics. Accordingly, the discovery of pharmacological targets and the development of safe and effective drugs for treatment of hair loss indicate strategies of the drug industry for maintenance of hair growth and quantity, while the hair care industry has become capable of delivering active compounds directed toward meeting the consumer demand for maintenance of hair cosmesis and quality. “Where there's life, there's hope” (Ecclesiastes 9:3-5).
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Affiliation(s)
- Ralph M Trüeb
- Center for Dermatology and Hair Diseases Professor Trüeb, Zurich-Wallisellen, Switzerland
| | - Hudson Dutra Rezende
- Center for Dermatology and Hair Diseases Professor Trüeb, Zurich-Wallisellen, Switzerland
| | - Maria Fernanda Reis Gavazzoni Dias
- Department of Dermatology, Universidade Federal Fluminense, Centro de Ciencias Medicas, Hospital Universitario Antonia Pedro, Niterói-Rio de Janeiro, Brazil
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Balevi A, Üstüner P, Kakşi SA, Özdemir M. Narrow-band UV-B phototherapy: an effective and reliable treatment alternative for extensive and recurrent pityriasis versicolor. J DERMATOL TREAT 2017; 29:252-255. [DOI: 10.1080/09546634.2017.1364690] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ali Balevi
- Dermatology Department, Istanbul Medipol University Medical Faculty, Istanbul, Turkey
| | - Pelin Üstüner
- Dermatology Department, Istanbul Medipol University Medical Faculty, Istanbul, Turkey
| | - Sümeyye A. Kakşi
- Dermatology Department, Istanbul Medipol University Medical Faculty, Istanbul, Turkey
| | - Mustafa Özdemir
- Dermatology Department, Istanbul Medipol University Medical Faculty, Istanbul, Turkey
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Oxidative stress in rats experimentally infected by Sporothrix schenckii. Microb Pathog 2017; 107:1-5. [DOI: 10.1016/j.micpath.2017.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 02/12/2017] [Accepted: 03/05/2017] [Indexed: 12/23/2022]
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Schwartz JR, Henry JP, Kerr KM, Flagler MJ, Page SH, Redman-Furey N. Incubatory environment of the scalp impacts pre-emergent hair to affect post-emergent hair cuticle integrity. J Cosmet Dermatol 2017; 17:105-111. [PMID: 28504468 DOI: 10.1111/jocd.12355] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/10/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To determine whether the oxidative stress transmitted to newly grown hair from an unhealthy scalp has physical consequences to the cuticular condition and function. METHODS A uniquely designed 24-week clinical study included 8 weeks of pretreatment with a cosmetic shampoo and 16 weeks of treatment with either a potentiated zinc pyrithione (ZPT) antidandruff shampoo or a placebo cosmetic shampoo. This clinical design allowed the growth and acquisition of hair samples under conditions of varying but known scalp health as a result of treating a dandruff/seborrheic dermatitis (D/SD) population. Two complementary methods were used to characterize the integrity of the cuticular surface. Hair surface hydrophobicity was assessed by quantifying water wetting force using a Wilhelmy balance method. Surface structure and porosity were assessed using dynamic vapor sorption (DVS) to gravimetrically quantify water sorption. RESULTS Chemical oxidative stress to pre-emergent hair has been shown to have negative consequences to hair surface structure. Compared to a placebo shampoo control, use of a potentiated ZPT shampoo improved scalp health and significantly improved the following attributes associated with healthy hair: hair surface hydrophobicity (surface energy) and cuticular moisture barrier effectiveness (dynamic vapor sorption). CONCLUSIONS Pre-emergent hair can be negatively impacted by the oxidative stress that occurs with an unhealthy scalp, possibly due to metabolic activity of resident microbes. Manifestations of the oxidative stress include altered cuticle surface properties that are responsible for its protective function; these effects are similar in type to those observed by bleaching post-emergent hair. These alterations have the potential to make the hair, once emerged from the scalp, more susceptible to the cumulative physical and chemical insults responsible for hair feel and look, fiber integrity, and overall retention.
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Affiliation(s)
| | | | - Kathy M Kerr
- The Procter & Gamble Company, Cincinnati, OH, USA
| | | | - Steve H Page
- The Procter & Gamble Company, Cincinnati, OH, USA
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