1
|
Pedraza Barrera CA, Fuentes JL. Photoprotective and antigenotoxic properties of Cutibacterium acnes ecotypes native to terrestrial subsurface habitats. FEMS Microbiol Lett 2023; 370:fnad108. [PMID: 37822017 DOI: 10.1093/femsle/fnad108] [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: 06/19/2023] [Revised: 09/30/2023] [Accepted: 10/10/2023] [Indexed: 10/13/2023] Open
Abstract
Actinobacteria are known to produce a variety of secondary metabolites with skin-protective properties. This study aimed to investigate the photoprotective and antigenotoxic properties against UVB of extracts obtained from Cutibacterium acnes strains. Bacterial growth was measured spectrophotometrically and the constant maximum growth rate (μ) value to each strain, were calculated. In vitro photoprotection efficacy was evaluated using in vitro indices such as sun protection factor (SPFespectrophotometric) and critical wavelength (λc). UVB-antigenotoxicity was also evaluated using the SOS Chromotest. Correlation analysis was used to examine the relationship between SPFespectrophotometric and extract concentration and the %GI estimates. Among the studied strains, one showed low (6.0 ≤ SPFespectrophotometric ≤ 14.9) and eight showed media (15.0 ≤ SPFespectrophotometric ≤ 29.9) UVB photoprotection efficacy. All of them resulted in broad-spectrum (UVA-UVB) photoprotection (λc > 370 nm). In total, two C. acnes ecotypes with different growth rates were evidenced, but the protective metabolites in the extracts were produced without the influence of growth rate. Photoprotective efficacy depended on the extract concentration and was correlated with antigenotoxicity. We demonstrated that C. acnes extracts can be used as sunscreen ingredients that reduce UVB-induced genotoxicity.
Collapse
Affiliation(s)
- Carlos Adolfo Pedraza Barrera
- Laboratorio de Microbiología y Mutagénesis Ambiental (LMMA), Grupo de Investigación en Microbiología y Genética (COL0083849), Escuela de Biología, Facultad de Ciencias, Universidad Industrial de Santander (UIS) Calle 9na y carrera 27, Bucaramanga Santander, Colombia
| | - Jorge Luis Fuentes
- Laboratorio de Microbiología y Mutagénesis Ambiental (LMMA), Grupo de Investigación en Microbiología y Genética (COL0083849), Escuela de Biología, Facultad de Ciencias, Universidad Industrial de Santander (UIS) Calle 9na y carrera 27, Bucaramanga Santander, Colombia
| |
Collapse
|
2
|
Zhernov YV, Simanduyev MY, Zaostrovtseva OK, Semeniako EE, Kolykhalova KI, Fadeeva IA, Kashutina MI, Vysochanskaya SO, Belova EV, Shcherbakov DV, Sukhov VA, Sidorova EA, Mitrokhin OV. Molecular Mechanisms of Scombroid Food Poisoning. Int J Mol Sci 2023; 24:ijms24010809. [PMID: 36614252 PMCID: PMC9821622 DOI: 10.3390/ijms24010809] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 12/01/2022] [Accepted: 12/22/2022] [Indexed: 01/05/2023] Open
Abstract
Scombroid food poisoning (SFP) is a foodborne disease that develops after consumption of fresh fish and, rarely, seafood that has fine organoleptic characteristics but contains a large amount of exogenous histamine. SFP, like other food pseudo-allergic reactions (FPA), is a disorder that is clinically identical to allergic reactions type I, but there are many differences in their pathogenesis. To date, SFP has been widespread throughout the world and is an urgent problem, although exact epidemiological data on incidence varies greatly. The need to distinguish SFP from true IgE-associated allergy to fish and seafood is one of the most difficult examples of the differential diagnosis of allergic conditions. The most important difference is the absence of an IgE response in SFP. The pathogenesis of SFP includes a complex system of interactions between the body and chemical triggers such as exogenous histamine, other biogenic amines, cis-urocanic acid, salicylates, and other histamine liberators. Because of the wide range of molecular pathways involved in this process, it is critical to understand their differences. This may help predict and prevent poor outcomes in patients and contribute to the development of adequate hygienic rules and regulations for seafood product safety. Despite the vast and lengthy history of research on SFP mechanisms, there are still many blank spots in our understanding of this condition. The goals of this review are to differentiate various molecular mechanisms of SFP and describe methods of hygienic regulation of some biogenic amines that influence the concentration of histamine in the human body and play an important role in the mechanism of SFP.
Collapse
Affiliation(s)
- Yury V. Zhernov
- Department of General Hygiene, F. Erismann Institute of Public Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
- Center of Life Sciences, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia
- Center for Medical Anthropology, N.N. Miklukho-Maclay Institute of Ethnology and Anthropology, Russian Academy of Sciences, 119017 Moscow, Russia
- Department of Medical and Biological Disciplines, Reaviz Medical University, 107564 Moscow, Russia
- Correspondence: ; Tel.: +7-(915)-1552000
| | - Mark Y. Simanduyev
- The Baku Branch, I.M. Sechenov First Moscow State Medical University (Sechenov University), Baku AZ1141, Azerbaijan
| | - Olga K. Zaostrovtseva
- Department of General Hygiene, F. Erismann Institute of Public Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia
| | - Ekaterina E. Semeniako
- Department of General Hygiene, F. Erismann Institute of Public Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia
| | - Kseniia I. Kolykhalova
- Department of General Hygiene, F. Erismann Institute of Public Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia
| | - Inna A. Fadeeva
- Department of Foreign Language, Faculty of World Economy, Diplomatic Academy of the Russian Foreign Ministry, 119034 Moscow, Russia
- Department of Public Administration in Foreign Policy, Diplomatic Academy of the Russian Foreign Ministry, 119034 Moscow, Russia
| | - Maria I. Kashutina
- Loginov Moscow Clinical Scientific and Practical Center, 111123 Moscow, Russia
- Department of Public Health Promotion, National Research Centre for Therapy and Preventive Medicine, 101990 Moscow, Russia
- Department of Therapy, Clinical Pharmacology and Emergency Medicine, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
| | - Sonya O. Vysochanskaya
- Department of General Hygiene, F. Erismann Institute of Public Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia
| | - Elena V. Belova
- Department of General Hygiene, F. Erismann Institute of Public Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia
| | - Denis V. Shcherbakov
- Department of General Hygiene, F. Erismann Institute of Public Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia
| | - Vitaly A. Sukhov
- Department of General Hygiene, F. Erismann Institute of Public Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia
| | - Ekaterina A. Sidorova
- Department of General Hygiene, F. Erismann Institute of Public Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia
| | - Oleg V. Mitrokhin
- Department of General Hygiene, F. Erismann Institute of Public Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia
| |
Collapse
|
3
|
Chen H, Zhao Q, Zhong Q, Duan C, Krutmann J, Wang J, Xia J. Skin Microbiome, Metabolome and Skin Phenome, from the Perspectives of Skin as an Ecosystem. PHENOMICS (CHAM, SWITZERLAND) 2022; 2:363-382. [PMID: 36939800 PMCID: PMC9712873 DOI: 10.1007/s43657-022-00073-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/06/2022] [Accepted: 08/11/2022] [Indexed: 11/07/2022]
Abstract
Skin is a complex ecosystem colonized by millions of microorganisms, including bacteria, fungi, and viruses. Skin microbiota is believed to exert critical functions in maintaining host skin health. Profiling the structure of skin microbial community is the first step to overview the ecosystem. However, the community composition is highly individualized and extremely complex. To explore the fundamental factors driving the complexity of the ecosystem, namely the selection pressures, we review the present studies on skin microbiome from the perspectives of ecology. This review summarizes the following: (1) the composition of substances/nutrients in the cutaneous ecological environment that are derived from the host and the environment, highlighting their proposed function on skin microbiota; (2) the features of dominant skin commensals to occupy ecological niches, through self-adaptation and microbe-microbe interactions; (3) how skin microbes, by their structures or bioactive molecules, reshape host skin phenotypes, including skin immunity, maintenance of skin physiology such as pH and hydration, ultraviolet (UV) protection, odor production, and wound healing. This review aims to re-examine the host-microbe interactions from the ecological perspectives and hopefully to give new inspiration to this field.
Collapse
Affiliation(s)
- Huizhen Chen
- grid.8547.e0000 0001 0125 2443Human Phenome Institute, School of Life Sciences, Fudan University, Shanghai, 200438 China
| | - Qi Zhao
- grid.27255.370000 0004 1761 1174Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, 250012 China
- grid.435557.50000 0004 0518 6318IUF-Leibniz Research Institute for Environmental Medicine, Düsseldorf, D-40225 Germany
| | - Qian Zhong
- grid.8547.e0000 0001 0125 2443Human Phenome Institute, School of Life Sciences, Fudan University, Shanghai, 200438 China
| | - Cheng Duan
- grid.8547.e0000 0001 0125 2443Greater Bay Area Institute of Precision Medicine (Guangzhou), School of Life Sciences, Fudan University, Guangzhou, 511458 China
| | - Jean Krutmann
- grid.435557.50000 0004 0518 6318IUF-Leibniz Research Institute for Environmental Medicine, Düsseldorf, D-40225 Germany
| | - Jiucun Wang
- grid.8547.e0000 0001 0125 2443Human Phenome Institute, School of Life Sciences, Fudan University, Shanghai, 200438 China
- grid.506261.60000 0001 0706 7839Research Unit of Dissecting the Population Genetics and Developing New Technologies for Treatment and Prevention of Skin Phenotypes and Dermatological Diseases (2019RU058), Chinese Academy of Medical Sciences, Shanghai, 200438 China
| | - Jingjing Xia
- grid.8547.e0000 0001 0125 2443Greater Bay Area Institute of Precision Medicine (Guangzhou), School of Life Sciences, Fudan University, Guangzhou, 511458 China
| |
Collapse
|
4
|
Herrala M, Turunen S, Hanhineva K, Lehtonen M, Mikkonen JJW, Seitsalo H, Lappalainen R, Tjäderhane L, Niemelä RK, Salo T, Myllymaa S, Kullaa AM, Kärkkäinen O. Low-Dose Doxycycline Treatment Normalizes Levels of Some Salivary Metabolites Associated with Oral Microbiota in Patients with Primary Sjögren's Syndrome. Metabolites 2021; 11:metabo11090595. [PMID: 34564411 PMCID: PMC8470364 DOI: 10.3390/metabo11090595] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/26/2021] [Accepted: 08/28/2021] [Indexed: 12/14/2022] Open
Abstract
Saliva is a complex oral fluid, and plays a major role in oral health. Primary Sjögren’s syndrome (pSS), as an autoimmune disease that typically causes hyposalivation. In the present study, salivary metabolites were studied from stimulated saliva samples (n = 15) of female patients with pSS in a group treated with low-dose doxycycline (LDD), saliva samples (n = 10) of non-treated female patients with pSS, and saliva samples (n = 14) of healthy age-matched females as controls. Saliva samples were analyzed with liquid chromatography mass spectrometry (LC-MS) based on the non-targeted metabolomics method. The saliva metabolite profile differed between pSS patients and the healthy control (HC). In the pSS patients, the LDD treatment normalized saliva levels of several metabolites, including tyrosine glutamine dipeptide, phenylalanine isoleucine dipeptide, valine leucine dipeptide, phenylalanine, pantothenic acid (vitamin B5), urocanic acid, and salivary lipid cholesteryl palmitic acid (CE 16:0), to levels seen in the saliva samples of the HC. In conclusion, the data showed that pSS is associated with an altered saliva metabolite profile compared to the HC and that the LLD treatment normalized levels of several metabolites associated with dysbiosis of oral microbiota in pSS patients. The role of the saliva metabolome in pSS pathology needs to be further studied to clarify if saliva metabolite levels can be used to predict or monitor the progress and treatment of pSS.
Collapse
Affiliation(s)
- Maria Herrala
- Research Group of Oral Health Sciences, Faculty of Medicine, Oulu University Hospital, University of Oulu, 90220 Oulu, Finland;
- Institute of Dentistry, Faculty of Health Sciences, University of Eastern Finland, 70211 Kuopio, Finland;
- Medical Research Center Oulu, Oulu University Hospital, University of Oulu, 90014 Oulu, Finland;
- Correspondence: ; Fax: +358-8-537-5560
| | - Soile Turunen
- School of Pharmacy, University of Eastern Finland, 70210 Kuopio, Finland; (S.T.); (M.L.); (O.K.)
| | - Kati Hanhineva
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70211 Kuopio, Finland;
- Department of Life Technologies, Food Chemistry and Food Development Unit, University of Turku, 20014 Turku, Finland
| | - Marko Lehtonen
- School of Pharmacy, University of Eastern Finland, 70210 Kuopio, Finland; (S.T.); (M.L.); (O.K.)
| | - Jopi J. W. Mikkonen
- Institute of Dentistry, Faculty of Health Sciences, University of Eastern Finland, 70211 Kuopio, Finland;
- Department of Applied Physics, University of Eastern Finland, 70211 Kuopio, Finland; (R.L.); (S.M.)
| | | | - Reijo Lappalainen
- Department of Applied Physics, University of Eastern Finland, 70211 Kuopio, Finland; (R.L.); (S.M.)
| | - Leo Tjäderhane
- Medical Research Center Oulu, Oulu University Hospital, University of Oulu, 90014 Oulu, Finland;
- Department of Oral and Maxillofacial Diseases, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland;
| | - Raija K. Niemelä
- Department of Rheumatology, Oulu University Hospital, 90220 Oulu, Finland;
| | - Tuula Salo
- Department of Oral and Maxillofacial Diseases, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland;
- Translational Immunology Research Program (TRIMM), University of Helsinki, 00014 Helsinki, Finland
- Department of Pathology, Faculty of Medicine, University of Helsinki, Helsinki University Hospital, 00014 Helsinki, Finland
- Cancer and Translational Medicine Research Unit, University of Oulu, 90014 Oulu, Finland
| | - Sami Myllymaa
- Department of Applied Physics, University of Eastern Finland, 70211 Kuopio, Finland; (R.L.); (S.M.)
- Diagnostic Imaging Center, Kuopio University Hospital, 70029 Kuopio, Finland
| | - Arja M. Kullaa
- Research Group of Oral Health Sciences, Faculty of Medicine, Oulu University Hospital, University of Oulu, 90220 Oulu, Finland;
- Institute of Dentistry, Faculty of Health Sciences, University of Eastern Finland, 70211 Kuopio, Finland;
- Educational Dental Clinic, Kuopio University Hospital, 90220 Kuopio, Finland
| | - Olli Kärkkäinen
- School of Pharmacy, University of Eastern Finland, 70210 Kuopio, Finland; (S.T.); (M.L.); (O.K.)
| |
Collapse
|
5
|
Souak D, Barreau M, Courtois A, André V, Duclairoir Poc C, Feuilloley MGJ, Gault M. Challenging Cosmetic Innovation: The Skin Microbiota and Probiotics Protect the Skin from UV-Induced Damage. Microorganisms 2021; 9:microorganisms9050936. [PMID: 33925587 PMCID: PMC8145394 DOI: 10.3390/microorganisms9050936] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/22/2021] [Accepted: 04/23/2021] [Indexed: 12/17/2022] Open
Abstract
Many studies performed in the last decade have focused on the cutaneous microbiota. It has been shown that this microbiota plays a key role in skin homeostasis. Considered as “a second barrier” to the environment, it is very important to know how it reacts to exogenous aggressions. The cosmetics industry has a started to use this microbiota as a source of natural ingredients, particularly ones that confer photoprotection against ultraviolet (UV) rays. Interestingly, it has been demonstrated that bacterial molecules can block UV rays or reverse their harmful effects. Oral probiotics containing living microorganisms have also shown promising results in restoring skin homeostasis and reversing the negative effects of UV rays. Microbial-based active sunscreen compounds have huge potential for use as next-generation photoprotection products.
Collapse
Affiliation(s)
- Djouhar Souak
- BASF Beauty Care Solutions France SAS, 69007 Lyon, France; (D.S.); (A.C.); (V.A.)
- LMSM EA4312, Laboratoire de Microbiologie Signaux et Microenvironnement, Université de Rouen Normandie, 27000 Evreux, France;
| | - Magalie Barreau
- LMSM EA4312, Laboratoire de Microbiologie Signaux et Microenvironnement, Université de Rouen Normandie, 27000 Evreux, France;
| | - Aurélie Courtois
- BASF Beauty Care Solutions France SAS, 69007 Lyon, France; (D.S.); (A.C.); (V.A.)
| | - Valérie André
- BASF Beauty Care Solutions France SAS, 69007 Lyon, France; (D.S.); (A.C.); (V.A.)
| | - Cécile Duclairoir Poc
- LMSM EA4312, Laboratoire de Microbiologie Signaux et Microenvironnement, Université de Rouen Normandie, 27000 Evreux, France;
- Correspondence: (C.D.P.); (M.G.J.F.); (M.G.)
| | - Marc G. J. Feuilloley
- LMSM EA4312, Laboratoire de Microbiologie Signaux et Microenvironnement, Université de Rouen Normandie, 27000 Evreux, France;
- Correspondence: (C.D.P.); (M.G.J.F.); (M.G.)
| | - Manon Gault
- BASF Beauty Care Solutions France SAS, 69007 Lyon, France; (D.S.); (A.C.); (V.A.)
- Correspondence: (C.D.P.); (M.G.J.F.); (M.G.)
| |
Collapse
|
6
|
Vieyra-Garcia PA, Wolf P. A deep dive into UV-based phototherapy: Mechanisms of action and emerging molecular targets in inflammation and cancer. Pharmacol Ther 2020; 222:107784. [PMID: 33316286 DOI: 10.1016/j.pharmthera.2020.107784] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 11/25/2020] [Indexed: 02/07/2023]
Abstract
UV-based phototherapy (including psoralen plus UVA (PUVA), UVB and UVA1) has a long, successful history in the management of numerous cutaneous disorders. Photoresponsive diseases are etiologically diverse, but most involve disturbances in local (and occasionally systemic) inflammatory cells and/or abnormalities in keratinocytes that trigger inflammation. UV-based phototherapy works by regulating the inflammatory component and inducing apoptosis of pathogenic cells. This results in a fascinating and complex network of simultaneous events-immediate transcriptional changes in keratinocytes, immune cells, and pigment cells; the emergence of apoptotic bodies; and the trafficking of antigen-presenting cells in skin-that quickly transform the microenvironment of UV-exposed skin. Molecular elements in this system of UV recognition and response include chromophores, metabolic byproducts, innate immune receptors, neurotransmitters and mediators such as chemokines and cytokines, antimicrobial peptides, and platelet activating factor (PAF) and PAF-like molecules that simultaneously shape the immunomodulatory effects of UV and their interplay with the microbiota of the skin and beyond. Phototherapy's key effects-proapoptotic, immunomodulatory, antipruritic, antifibrotic, propigmentary, and pro-prebiotic-promote clinical improvement in various skin diseases such as psoriasis, atopic dermatitis (AD), graft-versus-host disease (GvHD), vitiligo, scleroderma, and cutaneous T-cell lymphoma (CTCL) as well as prevention of polymorphic light eruption (PLE). As understanding of phototherapy improves, new therapies (UV- and non-UV-based) are being developed that will modify regulatory T-cells (Treg), interact with (resident) memory T-cells and /or utilize agonists and antagonists as well as antibodies targeting soluble molecules such as cytokines and chemokines, transcription factors, and a variety of membrane-associated receptors.
Collapse
Affiliation(s)
- Pablo A Vieyra-Garcia
- Department of Dermatology, Medical University of Graz, Auenbruggerplatz 8, Graz A-8036, Austria.
| | - Peter Wolf
- Department of Dermatology, Medical University of Graz, Auenbruggerplatz 8, Graz A-8036, Austria.
| |
Collapse
|
7
|
Nath S, Kumari N, Bandyopadhyay D, Sinha N, Majumder PP, Mitra R, Mukherjee S. Dysbiotic Lesional Microbiome With Filaggrin Missense Variants Associate With Atopic Dermatitis in India. Front Cell Infect Microbiol 2020; 10:570423. [PMID: 33282748 PMCID: PMC7705349 DOI: 10.3389/fcimb.2020.570423] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 09/22/2020] [Indexed: 12/26/2022] Open
Abstract
Background: Atopic Dermatitis (AD) has been associated with the loss of function (LoF) mutations in Filaggrin (FLG) gene and increase in relative abundance of specific microbes in the lesional skin, predominantly in Caucasians. Our study aims to determine, in Indian AD patients, (a) the prevalence of FLG LoF and missense mutations, and (b) the nature and extent of dysbiosis and altered microbial pathways with and without mutations in FLG. AD patients (n = 34) and healthy controls (n = 54) were recruited from India in this study and shotgun sequencing was carried out in a subset of samples with adequate microbiome DNA concentration. Host DNA from the same subset of samples was subjected to FLG coding region sequencing and host-microbiome association was estimated. Results: The prevalence of FLG LoFs that are associated with AD globally were significantly lesser in our cases and controls (8.6%, 0%) than those reported in Europeans (27%, 2.6%). Staphylococcus aureus was present only on AD skin [abundance in Pediatric AD: 32.86%; Adult AD: 22.17%], but not on healthy skin on which Staphylococcus hominis (Adult controls: 16.43%, Adult AD: 0.20%; p = 0.002), Cutibacterium acnes (Adult controls:10.84%, Adult AD: 0.90%; p = 0.02), and Malassezia globosa (Adult controls: 8.89%, Adult AD: 0.005%; p = 0.001) were significantly more abundant. Microbial pathways mostly associated with skin barrier permeability, ammonia production and inflammation (Arginine and Proline metabolism, Histidine Metabolism and Staphylococcus aureus infection) were significantly enriched on AD skin metagenome. These pathways are also reported to impair antimicrobial peptide activity. Among AD patients with missense single nucleotide polymorphisms harboring "potentially damaging" alleles in FLG gene, damaging allele dosage was significantly (p < 0.02) positively correlated with relative abundance of phylum_Proteobacteria up to order_Pseudomonadales and negatively correlated with phylum_Firmicutes up to species_Staphylococcus aureus. Conclusion: Our study has provided evidence that host DNA profile is significantly associated with microbiome composition in the development of AD. Species and strain level analysis showed that the microbial pathways enriched in AD cases were mostly found in MRSA strains. These evidences can be harnessed to control AD by modulating the microbiome using a personalized strategy. Our findings on the association of FLG genotypes with the microbiome dysbiosis may pave the way for a personalized strategy to provide a more effective control of AD.
Collapse
Affiliation(s)
- Shankha Nath
- National Institute of Biomedical Genomics, Kalyani, India
| | - Naina Kumari
- National Institute of Biomedical Genomics, Kalyani, India
| | | | - Neloy Sinha
- College of Medicine and JNM Hospital, Kalyani, India
| | - Partha P Majumder
- National Institute of Biomedical Genomics, Kalyani, India.,Indian Statistical Institute, Kolkata, India
| | | | | |
Collapse
|
8
|
Ou J, Bao T, Ernst P, Si Y, Prabhu SD, Wu H, Zhang J(J, Zhou L, Yang ST, Liu X(M. Intracellular metabolism analysis of Clostridium cellulovorans via modeling integrating proteomics, metabolomics and fermentation. Process Biochem 2020. [DOI: 10.1016/j.procbio.2019.10.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
9
|
Acinetobacter as a potentially important producer of urocanic acid in chub mackerel, a histidine metabolite of emerging health concern. Eur Food Res Technol 2019. [DOI: 10.1007/s00217-018-3217-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
10
|
Patra V, Laoubi L, Nicolas JF, Vocanson M, Wolf P. A Perspective on the Interplay of Ultraviolet-Radiation, Skin Microbiome and Skin Resident Memory TCRαβ+ Cells. Front Med (Lausanne) 2018; 5:166. [PMID: 29900173 PMCID: PMC5988872 DOI: 10.3389/fmed.2018.00166] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 05/11/2018] [Indexed: 12/21/2022] Open
Abstract
The human skin is known to be inhabited by diverse microbes, including bacteria, fungi, viruses, archaea, and mites. This microbiome exerts a protective role against infections by promoting immune development and inhibiting pathogenic microbes to colonize skin. One of the factors having an intense effect on the skin and its resident microbes is ultraviolet-radiation (UV-R). UV-R can promote or inhibit the growth of microbes on the skin and modulate the immune system which can be either favorable or harmful. Among potential UV-R targets, skin resident memory T cells (TRM) stand as well positioned immune cells at the forefront within the skin. Both CD4+ or CD8+ αβ TRM cells residing permanently in peripheral tissues have been shown to play prominent roles in providing accelerated and long-lived specific immunity, tissue homeostasis, wound repair. Nevertheless, their response upon UV-R exposure or signals from microbiome are poorly understood compared to resident TCRγδ cells. Skin TRM survive for long periods of time and are exposed to innumerable antigens during lifetime. The interplay of TRM with skin residing microbes may be crucial in pathophysiology of various diseases including psoriasis, atopic dermatitis and polymorphic light eruption. In this article, we share our perspective about how UV-R may directly shape the persistence, phenotype, specificity, and function of skin TRM; and moreover, whether UV-R alters barrier function, leading to microbial-specific skin TRM, disrupting the healthy balance between skin microbiome and skin immune cells, and resulting in chronic inflammation and diseased skin.
Collapse
Affiliation(s)
- VijayKumar Patra
- Centre International de Recherche en Infectiologie, Institut National de la Santé et de la Recherche Médicale, U1111, Université Claude Bernard Lyon 1, Centre National de la Recherche Scientifique, UMR5308, Ecole Normale Supérieure de Lyon, Université de Lyon, Lyon, France.,Center for Medical Research, Medical University of Graz, Graz, Austria.,Research Unit for Photodermatology, Department of Dermatology, Medical University of Graz, Graz, Austria
| | - Léo Laoubi
- Centre International de Recherche en Infectiologie, Institut National de la Santé et de la Recherche Médicale, U1111, Université Claude Bernard Lyon 1, Centre National de la Recherche Scientifique, UMR5308, Ecole Normale Supérieure de Lyon, Université de Lyon, Lyon, France
| | - Jean-François Nicolas
- Centre International de Recherche en Infectiologie, Institut National de la Santé et de la Recherche Médicale, U1111, Université Claude Bernard Lyon 1, Centre National de la Recherche Scientifique, UMR5308, Ecole Normale Supérieure de Lyon, Université de Lyon, Lyon, France.,Allergy and Clinical Immunology Department, Lyon Sud University Hospital, Pierre-Bénite, France
| | - Marc Vocanson
- Centre International de Recherche en Infectiologie, Institut National de la Santé et de la Recherche Médicale, U1111, Université Claude Bernard Lyon 1, Centre National de la Recherche Scientifique, UMR5308, Ecole Normale Supérieure de Lyon, Université de Lyon, Lyon, France
| | - Peter Wolf
- Research Unit for Photodermatology, Department of Dermatology, Medical University of Graz, Graz, Austria
| |
Collapse
|
11
|
Nakatsuji T, Chen TH, Butcher AM, Trzoss LL, Nam SJ, Shirakawa KT, Zhou W, Oh J, Otto M, Fenical W, Gallo RL. A commensal strain of Staphylococcus epidermidis protects against skin neoplasia. SCIENCE ADVANCES 2018; 4:eaao4502. [PMID: 29507878 PMCID: PMC5834004 DOI: 10.1126/sciadv.aao4502] [Citation(s) in RCA: 156] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 01/24/2018] [Indexed: 05/04/2023]
Abstract
We report the discovery that strains of Staphylococcus epidermidis produce 6-N-hydroxyaminopurine (6-HAP), a molecule that inhibits DNA polymerase activity. In culture, 6-HAP selectively inhibited proliferation of tumor lines but did not inhibit primary keratinocytes. Resistance to 6-HAP was associated with the expression of mitochondrial amidoxime reducing components, enzymes that were not observed in cells sensitive to this compound. Intravenous injection of 6-HAP in mice suppressed the growth of B16F10 melanoma without evidence of systemic toxicity. Colonization of mice with an S. epidermidis strain producing 6-HAP reduced the incidence of ultraviolet-induced tumors compared to mice colonized by a control strain that did not produce 6-HAP. S. epidermidis strains producing 6-HAP were found in the metagenome from multiple healthy human subjects, suggesting that the microbiome of some individuals may confer protection against skin cancer. These findings show a new role for skin commensal bacteria in host defense.
Collapse
Affiliation(s)
- Teruaki Nakatsuji
- Department of Dermatology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Tiffany H. Chen
- Department of Dermatology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Anna M. Butcher
- Department of Dermatology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Lynnie L. Trzoss
- Scripps Institute of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA
| | - Sang-Jip Nam
- Scripps Institute of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA
| | - Karina T. Shirakawa
- Department of Dermatology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Wei Zhou
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Julia Oh
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Michael Otto
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - William Fenical
- Scripps Institute of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA
| | - Richard L. Gallo
- Department of Dermatology, University of California, San Diego, La Jolla, CA 92093, USA
| |
Collapse
|
12
|
Increased cis-to-trans urocanic acid ratio in the skin of chronic spontaneous urticaria patients. Sci Rep 2017; 7:1318. [PMID: 28465560 PMCID: PMC5431012 DOI: 10.1038/s41598-017-01487-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 03/30/2017] [Indexed: 02/03/2023] Open
Abstract
Increased filaggrin expression was found to be correlated with severity scores in chronic spontaneous urticaria (CSU); however, the role of filaggrin breakdown products (FBPs) in CSU has not been studied. We collected stratum corneum (SC) specimens from the volar forearms of 10 CSU patients, 10 AD patients, and 10 healthy normal controls (NCs) and measured contents of FBPs (pyrrolidone carboxylic acid [PCA] and urocanic acid [UCA]) using UPLC-MS/MS, transepidermal water loss (TEWL) and epidermal pH. Compared to NCs, cis-UCA level was increased in CSU lesions (P < 0.05) and decreased in AD lesions (P < 0.01). The cis-to-trans-UCA ratio in SC specimens from CSU patients was significantly greater than those from AD and NC subjects. AD lesions had lower FBP and PCA contents compared to NC skin (both P < 0.001), and higher TEWL and pH compared to CSU lesions. Moreover, cis-UCA, but not trans-UCA, enhanced the IgE-mediated basophil activation, as well as IgE- and calcium-mediated degranulation of LAD-2 cells, in a dose-dependent manner. These findings suggest that increased cis-to-trans UCA ratio in the epidermis is a distinct feature of CSU, which could enhance mast cell degranulation. Modulation of cis-UCA may be a potential target for skin diseases associated with IgE-mediated mast cell degranulation.
Collapse
|
13
|
Ezzat MA, Zare D, Karim R, Ghazali HM. Trans- and cis-urocanic acid, biogenic amine and amino acid contents in ikan pekasam (fermented fish) produced from Javanese carp (Puntius gonionotus) and black tilapia (Oreochromis mossambicus). Food Chem 2014; 172:893-9. [PMID: 25442635 DOI: 10.1016/j.foodchem.2014.09.158] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 09/09/2014] [Accepted: 09/28/2014] [Indexed: 11/28/2022]
Abstract
Ikan pekasam is a fermented fish product produced in Malaysia and is usually made from freshwater fish with ground roasted uncooked rice as the main source of carbohydrate. In this study, the amino acid, biogenic amine, and trans- and cis-urocanic acid (UCA) contents of fifteen commercial samples of Ikan pekasam made from Javanese carp and black tilapia, that had undergone either natural or acid-assisted fermentation, were quantified. The latter includes either tamarind (Tamarindus indica) pulp or dried slices of Garcinia atroviridis fruit in the fermentation process. Results showed that there are no significant differences in most of the biogenic amines including histamine, while there are significant differences in total UCA content, and trans- and cis-UCA contents between the two samples. Differences in the amino acid contents were largely fish-dependent.
Collapse
Affiliation(s)
- M A Ezzat
- Faculty Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - D Zare
- Faculty Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - R Karim
- Faculty Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - H M Ghazali
- Faculty Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| |
Collapse
|
14
|
Zhang XX, Ritchie SR, Rainey PB. Urocanate as a potential signaling molecule for bacterial recognition of eukaryotic hosts. Cell Mol Life Sci 2014; 71:541-7. [PMID: 24305948 PMCID: PMC11113655 DOI: 10.1007/s00018-013-1527-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 10/29/2013] [Accepted: 11/18/2013] [Indexed: 12/24/2022]
Abstract
Host recognition is the crucial first step in infectious disease pathogenesis. Recognition allows pathogenic bacteria to identify suitable niches and deploy appropriate phenotypes for successful colonization and immune evasion. However, the mechanisms underlying host recognition remain largely unknown. Mounting evidence suggests that urocanate-an intermediate of the histidine degradation pathway-accumulates in tissues, such as skin, and acts as a molecule that promotes bacterial infection via molecular interaction with the bacterial regulatory protein HutC. In Gram-negative bacteria, HutC has long been known as a transcriptional repressor of hut genes for the utilization of histidine (and urocanate) as sources of carbon and nitrogen. Recent work on the opportunistic human pathogen Pseudomonas aeruginosa and zoonotic pathogen Brucella abortus shows that urocanate, in conjunction with HutC, plays a significant role in the global control of cellular metabolism, cell motility, and expression of virulence factors. We suggest that in addition to being a valuable source of carbon and nitrogen, urocanate may be central to the elicitation of bacterial pathogenesis.
Collapse
Affiliation(s)
- Xue-Xian Zhang
- Institute of Natural and Mathematical Sciences, Massey University at Albany, Auckland, 0745, New Zealand,
| | | | | |
Collapse
|
15
|
Zhang XX, Chang H, Tran SL, Gauntlett JC, Cook GM, Rainey PB. Variation in transport explains polymorphism of histidine and urocanate utilization in a natural Pseudomonas population. Environ Microbiol 2012; 14:1941-51. [PMID: 22225938 DOI: 10.1111/j.1462-2920.2011.02692.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Phenotypic variation is a fundamental requirement for evolution by natural selection. While evidence of phenotypic variation in natural populations abounds, its genetic basis is rarely understood. Here we report variation in the ability of plant-colonizing Pseudomonas to utilize histidine, and its derivative, urocanate, as sole sources of carbon and nitrogen. From a population of 164 phyllosphere-colonizing Pseudomonas strains, 77% were able to utilize both histidine and urocanate (His(+) , Uro(+) ) as growth substrates, whereas the remainder could utilize histidine, but not urocanate (His(+) , Uro(-) ), or vice versa (His(-) , Uro(+) ). An in silico analysis of the hut locus, which determines capacity to utilize both histidine and urocanate, from genome-sequenced Pseudomonas strains, showed significant variation in the number of putative transporters. To identify transporter genes specific for histidine and urocanate, we focused on a single genotype of Pseudomonas fluorescens, strain SBW25, which is capable of utilizing both substrates. Site-directed mutagenesis, combined with [(3) H]histidine transport assays, shows that hutT(u) encodes a urocanate-specific transporter; hutT(h) encodes the major high-affinity histidine transporter; and hutXWV encodes an ABC-type transporter that plays a minor role in histidine uptake. Introduction of cloned copies of hutT(h) and hutT(u) from SBW25 into strains incapable of utilizing either histidine, or urocanate, complemented the defect, demonstrating a lack of functional transporters in these strains. Taken together our data show that variation in transport systems, and not in metabolic genes, explains a naturally occurring phenotypic polymorphism.
Collapse
Affiliation(s)
- Xue-Xian Zhang
- NZ Institute for Advanced Study, Massey University, Auckland 0745, New Zealand.
| | | | | | | | | | | |
Collapse
|
16
|
Nartop D, Sarı N. Novel Poly(Styrene) Attached Schiff Bases for Uptake Mn(II) and Ni(II) Ions and as Antimicrobial Agent against Micrococcus luteus. J Inorg Organomet Polym Mater 2011. [DOI: 10.1007/s10904-011-9634-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
17
|
Berrué F, McCulloch MWB, Kerr RG. Marine diterpene glycosides. Bioorg Med Chem 2011; 19:6702-19. [PMID: 21783368 DOI: 10.1016/j.bmc.2011.06.083] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 06/16/2011] [Accepted: 06/28/2011] [Indexed: 10/18/2022]
Abstract
Marine diterpene glycosides (MDGs) respresent a small but highly significant group of the much larger class of marine diterpenes. The three well-studied examples of MDGs are eleutherobins, pseudopterosins and fuscosides, all of which exhibit extremely promising biological activity. The eleutherobins are potent anti-mitotic agents, and the pseudopterosins and fuscosides are potent anti-inflammatory agents. This review discusses the structures and biological activities of these compounds, as well as their biosynthesis and synthesis.
Collapse
Affiliation(s)
- Fabrice Berrué
- Department of Chemistry, University of Prince Edward Island, Charlottetown, PEI, Canada
| | | | | |
Collapse
|
18
|
Visscher MO, Utturkar R, Pickens WL, LaRuffa AA, Robinson M, Wickett RR, Narendran V, Hoath SB. Neonatal skin maturation--vernix caseosa and free amino acids. Pediatr Dermatol 2011; 28:122-32. [PMID: 21504444 DOI: 10.1111/j.1525-1470.2011.01309.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Neonatal skin hydration decreases rapidly postnatally and then increases, indicating adaptive changes in stratum corneum water handling properties. Transition from high to low humidity at birth may initiate filaggrin proteolysis to free amino acids. Neonatal skin with vernix caseosa retained is more hydrated than skin with vernix removed. This study examines the potential roles of free amino acids and vernix in postnatal adaptation of infant stratum corneum in vivo. Specifically, the ontogeny of free amino acid generation in neonatal stratum corneum and the role of vernix caseosa in postnatal adaptation were examined using high performance liquid chromatography. Free amino acids were quantified for infant skin samples collected at (i) birth and 1 month and (ii) birth and 24 hours after vernix caseosa retention or removal and compared to neonatal foreskin, vernix caseosa, and adult stratum corneum using t-tests, analysis of variance, or univariate procedures. Free amino acids were extremely low at birth, significantly higher 1 month later but lower than in adults. Vernix caseosa retention led to significantly higher free amino acids 24 hours after birth compared to infants with vernix caseosa removed, and it paralleled the higher stratum corneum hydration of vernix caseosa-retained skin. Vernix caseosa contained free amino acids, with glutamic acid and histidine levels higher than in infants. Free amino acids in vernix caseosa-retained skin appear to originate from vernix caseosa. Free amino acids were lower in neonatal foreskin than adult forearm stratum corneum. Arginine was higher than citrulline at birth, but levels were comparable in older infants. The free amino acid increase at 1 month may be initiated by the humidity transition at birth and supports results in animals. The findings have implications for infant skin care practices.
Collapse
Affiliation(s)
- Marty O Visscher
- The Skin Sciences Institute, Division of Neonatology and Pulmonary Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229, USA.
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Visscher M, Robinson M, Wickett R. Stratum corneum free amino acids following barrier perturbation and repair. Int J Cosmet Sci 2011; 33:80-9. [DOI: 10.1111/j.1468-2494.2010.00592.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
20
|
Amputee skin condition: occlusion, stratum corneum hydration and free amino acid levels. Arch Dermatol Res 2010; 303:117-24. [PMID: 21161543 DOI: 10.1007/s00403-010-1111-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Revised: 11/22/2010] [Accepted: 11/29/2010] [Indexed: 10/18/2022]
Abstract
Patients with a prosthetic limb report negative skin effects, including irritation, rash and chafing, which can lead to infection, discomfort and reduced wear time to significantly impact normal activities. The aims were to examine the epidermal integrity (transepidermal water loss, TEWL), stratum corneum (SC) hydration [moisture accumulation rate (MAT)], friction and biomechanical properties in active below the knee amputees and to determine the effects of an inert sock liner on skin condition. The liner reduced hydration, TEWL and friction and increased elasticity versus the amputee's conventional skin care methods. Residual limb TEWL was increased and MAT was reduced versus the contralateral normal skin. In a second study, we hypothesized that complete occlusion would decrease free amino acids (FAA) and quantified them by high performance liquid chromatography in an adult volar forearm model. Occlusion with a water vapor impermeable wet dressing led to increased TEWL, erythema and dryness and reduced MAT versus normal skin, comparable to the results in the amputees. The FAA levels were significantly reduced for the occluded sites. The results suggest that residual limb occlusion in amputees may block the formation of FAA in the upper SC. Therapies based on replacement of water binding FAAs, may alleviate the consequences of long-term occlusion.
Collapse
|
21
|
Gibbs NK, Tye J, Norval M. Recent advances in urocanic acid photochemistry, photobiology and photoimmunology. Photochem Photobiol Sci 2008; 7:655-67. [PMID: 18528548 DOI: 10.1039/b717398a] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Urocanic acid (UCA), produced in the upper layers of mammalian skin, is a major absorber of ultraviolet radiation (UVR). Originally thought to be a 'natural sunscreen', studies conducted a quarter of a century ago proposed that UCA may be a chromophore for the immunosuppression that follows exposure to UVR. With its intriguing photochemistry, its role in immunosuppression and skin cancer development, and skin barrier function, UCA continues to be the subject of intense research effort. This review summarises the photochemical, photobiological and photoimmunological findings regarding UCA, published since 1998.
Collapse
Affiliation(s)
- Neil K Gibbs
- Dermatological Sciences, University of Manchester Medical School, Stopford Building, Oxford Road, Manchester, UK M13 9PT.
| | | | | |
Collapse
|
22
|
Norval M. Effects of solar radiation on the human immune system. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2001; 63:28-40. [PMID: 11684449 DOI: 10.1016/s1011-1344(01)00200-7] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
On UV irradiation of the skin, a complex cascade of immunological changes results, initiated by cutaneous chromophores and ending in suppression of some local and systemic immune responses. In this review, the stages in this process are outlined first, concentrating on the roles of DNA and urocanic acid as photoreceptors. Evidence indicating UV-induced immunomodulation of delayed hypersensitivity and resistance to infectious diseases in human subjects follows. Aspects of genetic susceptibility to the immunosuppressive effects of UV exposure and extrapolation of the data obtained in animal models to the human situation are included. Finally uncertain and unknown factors relating to the impact of UV on the human immune system are discussed.
Collapse
Affiliation(s)
- M Norval
- Department of Medical Microbiology, University of Edinburgh Medical School, Teviot Place, Edinburgh EH8 9AG, Scotland, UK.
| |
Collapse
|
23
|
Tateda N, Matsuhisa K, Hasebe K, Miura T. Simultaneous determination of urocanic acid isomers and histidine in human stratum corneum by high-performance liquid chromatography. ANAL SCI 2001; 17:775-8. [PMID: 11707950 DOI: 10.2116/analsci.17.775] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- N Tateda
- Asahikawa National College of Technology, Shunkodai, 2-2, Asahikawa 071-8142, Japan
| | | | | | | |
Collapse
|
24
|
Effects of solar radiation on the human immune system. COMPREHENSIVE SERIES IN PHOTOSCIENCES 2001. [DOI: 10.1016/s1568-461x(01)80040-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|