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Wang X, Sun Y, Luan C, Yang S, Wang K, Zhang X, Hao R, Zhang W. Effect of hydrogen-rich saline on melanopsin after acute blue light-induced retinal damage in rats. Photochem Photobiol 2024. [PMID: 38634423 DOI: 10.1111/php.13952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 04/19/2024]
Abstract
Excessive exposure to blue light can cause retinal damage. Hydrogen-rich saline (HRS), one of the hydrogen therapies, has been demonstrated to be effective in eye photodamage, but the effect on the expression of melanopsin in intrinsically photosensitive retinal ganglion cells (ipRGCs) is unknown. In this study, we used a rat model of light-induced retinal injury to observe the expression of melanopsin after HRS treatment and to determine the effect of HRS on retinal ganglion cell protection. Adult SD rats were exposed to blue light (48 h) and treated with HRS for 0, 3, 7, and 14 days. Real-time polymerase chain reaction (qRT-PCR) and Western blotting (WB) were performed to find the expression of genes and proteins, respectively. The function of retinal ipRGCs was measured by pattern-evoked electroretinography (pERG). The number and morphological changes of melanopsin-positive ganglion cells in the retina were observed by immunofluorescence (IF). Acute blue light exposure caused a decrease in ipRGC function, decreased expression of melanopsin protein and the melanopsin-positive RGCs, and diminished immunoreactivity in dendrites. However, over time, melanopsin showed a tendency to self-recovery, with an increase in melanopsin protein expression and the number of melanopsin-positive RGCs, with incomplete recovery of function within two weeks. HRS treatment accelerated the recovery process, with a significant increase in melanopsin expression and the number of melanopsin-positive RGCs, and an improvement in the pERG waveform within two weeks.
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Affiliation(s)
- Xiao Wang
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Vision Science, Tianjin, P. R. China
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, P. R. China
| | - Yifan Sun
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Vision Science, Tianjin, P. R. China
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, P. R. China
| | - Changlin Luan
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Vision Science, Tianjin, P. R. China
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, P. R. China
| | - Shiqiao Yang
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Vision Science, Tianjin, P. R. China
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, P. R. China
| | - Kailei Wang
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Vision Science, Tianjin, P. R. China
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, P. R. China
| | - Xiaoran Zhang
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Vision Science, Tianjin, P. R. China
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, P. R. China
| | - Rui Hao
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Vision Science, Tianjin, P. R. China
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, P. R. China
- Nankai University Eye Institute, Nankai University Affiliated Eye Hospital, Nankai University, Tianjin, P. R. China
| | - Wei Zhang
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Vision Science, Tianjin, P. R. China
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, P. R. China
- Nankai University Eye Institute, Nankai University Affiliated Eye Hospital, Nankai University, Tianjin, P. R. China
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Dickey AK, Berkovich J, Leaf RK, Jiang PY, Lopez-Galmiche G, Rebeiz L, Wheeden K, Kochevar I, Savage W, Zhao S, Campisi E, Heo SY, Trueb J, LaRochelle EPM, Rogers J, Banks A, Chang JK. Observational pilot study of multi-wavelength wearable light dosimetry for erythropoietic protoporphyria. Int J Dermatol 2024. [PMID: 38602089 DOI: 10.1111/ijd.17166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/15/2024] [Accepted: 03/19/2024] [Indexed: 04/12/2024]
Abstract
BACKGROUND Erythropoietic protoporphyria (EPP) causes painful light sensitivity, limiting quality of life. Our objective was to develop and validate a wearable light exposure device and correlate measurements with light sensitivity in EPP to predict and prevent symptoms. METHODS A wearable light dosimeter was developed to capture light doses of UVA, blue, and red wavelengths. A prospective observational pilot study was performed in which five EPP patients wore two light dosimeters for 3 weeks, one as a watch, and one as a shirt clip. RESULTS Standard deviation (SD) increases from the mean in the daily blue light dose increased the odds ratio (OR) for symptom risk more than the self-reported outdoor time (OR 2.76 vs. 2.38) or other wavelengths, and a one SD increase from the mean in the daily blue light wristband device dose increased the OR for symptom risk more than the daily blue light shirt clip (OR 2.45 vs. 1.62). The area under the receiver operator curve for the blue light wristband dose was 0.78, suggesting 78% predictive accuracy. CONCLUSION These data demonstrate that wearable blue light dosimetry worn as a wristband is a promising method for measuring light exposure and predicting and preventing symptoms in EPP.
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Affiliation(s)
- Amy K Dickey
- Department of Internal Medicine, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Healthcare Transformation Lab, Massachusetts General Hospital, Boston, MA, USA
| | - Jaime Berkovich
- Wearifi, Inc., Evanston, IL, USA
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
- Northwestern University Department of Materials Science and Engineering, Evanston, IL, USA
| | - Rebecca K Leaf
- Department of Internal Medicine, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Paul Y Jiang
- Department of Internal Medicine, Massachusetts General Hospital, Boston, MA, USA
| | | | - Lina Rebeiz
- Department of Internal Medicine, Massachusetts General Hospital, Boston, MA, USA
| | | | - Irene Kochevar
- Harvard Medical School, Boston, MA, USA
- Department of Dermatology, Massachusetts General Hospital, Boston, MA, USA
| | | | | | | | - Seung Y Heo
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
| | - Jacob Trueb
- Wearifi, Inc., Evanston, IL, USA
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
| | | | - John Rogers
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
- Northwestern University Department of Materials Science and Engineering, Evanston, IL, USA
| | - Anthony Banks
- Wearifi, Inc., Evanston, IL, USA
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
| | - Jan-Kai Chang
- Wearifi, Inc., Evanston, IL, USA
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, USA
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Serrage HJ, O’ Neill CA, Uzunbajakava NE. Illuminating microflora: shedding light on the potential of blue light to modulate the cutaneous microbiome. Front Cell Infect Microbiol 2024; 14:1307374. [PMID: 38660491 PMCID: PMC11039841 DOI: 10.3389/fcimb.2024.1307374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 03/26/2024] [Indexed: 04/26/2024] Open
Abstract
Cutaneous diseases (such as atopic dermatitis, acne, psoriasis, alopecia and chronic wounds) rank as the fourth most prevalent human disease, affecting nearly one-third of the world's population. Skin diseases contribute to significant non-fatal disability globally, impacting individuals, partners, and society at large. Recent evidence suggests that specific microbes colonising our skin and its appendages are often overrepresented in disease. Therefore, manipulating interactions of the microbiome in a non-invasive and safe way presents an attractive approach for management of skin and hair follicle conditions. Due to its proven anti-microbial and anti-inflammatory effects, blue light (380 - 495nm) has received considerable attention as a possible 'magic bullet' for management of skin dysbiosis. As humans, we have evolved under the influence of sun exposure, which comprise a significant portion of blue light. A growing body of evidence indicates that our resident skin microbiome possesses the ability to detect and respond to blue light through expression of chromophores. This can modulate physiological responses, ranging from cytotoxicity to proliferation. In this review we first present evidence of the diverse blue light-sensitive chromophores expressed by members of the skin microbiome. Subsequently, we discuss how blue light may impact the dialog between the host and its skin microbiome in prevalent skin and hair follicle conditions. Finally, we examine the constraints of this non-invasive treatment strategy and outline prospective avenues for further research. Collectively, these findings present a comprehensive body of evidence regarding the potential utility of blue light as a restorative tool for managing prevalent skin conditions. Furthermore, they underscore the critical unmet need for a whole systems approach to comprehend the ramifications of blue light on both host and microbial behaviour.
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Affiliation(s)
- Hannah J. Serrage
- Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Catherine A. O’ Neill
- Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
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Ballae Ganeshrao S, Theruveethi N, Srinivasan K. Knowledge, perception and practice towards blue-blocking lenses among optometrists. Clin Exp Optom 2024; 107:332-340. [PMID: 37257458 DOI: 10.1080/08164622.2023.2215380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 12/22/2022] [Accepted: 05/09/2023] [Indexed: 06/02/2023] Open
Abstract
CLINICAL RELEVANCE There is a lack of clinical guidelines in India for the prescription of blue-blocking lenses. Therefore, the practice trends will depend on practitioners' knowledge, attitude, and perception. BACKGROUND Exposure to blue light with increased use of light-emitting diode (LED) lights and digital devices along with the commercial availability of blue blocking lenses has warranted the need to understand the factors that influence the prescription of blue blocking lenses among eye care practitioners. Hence, we aim to assess knowledge, perception, and practice pattern of blue blocking lenses among Indian optometrists. METHODS This cross-sectional online survey was conducted among Indian Optometrists. The survey was distributed through various social groups of optometrists and state associations. The questionnaire had four main domains with 29 items in total. The four major domains were knowledge, practice, perception and demographic details on education. Descriptive analysis and logistic regression were performed to study the impact of these domains on the prescription of blue block lenses. RESULTS Out of 341 responses, 247 were included for analysis as per study criteria. About 50% (n = 123) of the participants had appropriate knowledge about blue light. Blue-blocking lenses were prescribed always or most of the time by 52% (n = 130) of the participants. The odds of prescribing blue blocking lenses were higher among practitioners who considered blue light as an important factor in causing computer vision syndrome (OR 3.77, 95% CI: 1.33-10.69, P = 0.01) or if they considered there is adequate published evidence (OR 3.95, 95% CI: 1.58-9.87, P = 0.003). CONCLUSIONS The source of evidence for prescribing blue-blocking lenses for our participants was mainly from advertisements rather than from scientific studies. Factors such as awareness, knowledge, education, and nature of practice did not play a significant role in prescribing blue-blocking lenses. This raises the need for evidence-based practice and the development of practice guidelines for prescribing blue-blocking lenses.
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Affiliation(s)
- Shonraj Ballae Ganeshrao
- Department of Optometry, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Nagarajan Theruveethi
- Department of Optometry, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Krithica Srinivasan
- Department of Optometry, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
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5
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Zhang C, Zaki FR, Won J, Boppart SA. A multimodal nonlinear optical microscopy study of the responses of Pseudomonas aeruginosa to blue light and antibiotic treatment. J Biophotonics 2024; 17:e202300384. [PMID: 38010357 PMCID: PMC10961202 DOI: 10.1002/jbio.202300384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 11/29/2023]
Abstract
Pseudomonas aeruginosa (P. aeruginosa) is a multidrug-resistant human pathogen involved in numerous infections. Understanding the response of P. aeruginosa to various treatments is critical to developing new ways for the antimicrobial susceptibly test and more effective treatment methods. Conventional antimicrobial susceptibility tests lack molecular information at the single bacterium level. In this study, we used label-free multimodal nonlinear optical microscopy to identify an autofluorescence signal from pyoverdine, a siderophore of the bacteria, for quantification of P. aeruginosa responses to antibiotics and blue light treatment. We also discovered that the bleaching of the pyoverdine autofluorescence signals is correlated with the inactivation of P. aeruginosa and is perhaps one of the mechanisms involved in the blue light inactivation of P. aeruginosa.
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Affiliation(s)
- Chi Zhang
- Beckman Institute for Advanced Science and Technology
| | | | - Jungeun Won
- Beckman Institute for Advanced Science and Technology
- Department of Bioengineering
| | - Stephen A. Boppart
- Beckman Institute for Advanced Science and Technology
- Department of Bioengineering
- Department of Electrical and Computer Engineering
- Cancer Center at Illinois
- Carle Illinois College of Medicine
- NIH/NIBIB Center for Label-free Imaging and Multiscale Biophotonics (CLIMB), University of Illinois Urbana-Champaign
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Hughes CL, An Y, Maloof JN, Harmer SL. Light quality-dependent roles of REVEILLE proteins in the circadian system. Plant Direct 2024; 8:e573. [PMID: 38481435 PMCID: PMC10936234 DOI: 10.1002/pld3.573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 01/25/2024] [Accepted: 02/10/2024] [Indexed: 03/17/2024]
Abstract
Several closely related Myb-like activator proteins are known to have partially redundant functions within the plant circadian clock, but their specific roles are not well understood. To clarify the function of the REVEILLE 4, REVEILLE 6, and REVEILLE 8 transcriptional activators, we characterized the growth and clock phenotypes of CRISPR-Cas9-generated single, double, and triple rve mutants. We found that these genes act synergistically to regulate flowering time, redundantly to regulate leaf growth, and antagonistically to regulate hypocotyl elongation. We previously reported that increasing intensities of monochromatic blue and red light have opposite effects on the period of triple rve468 mutants. Here, we further examined light quality-specific phenotypes of rve mutants and report that rve468 mutants lack the blue light-specific increase in expression of some circadian clock genes observed in wild type. To investigate the basis of these blue light-specific circadian phenotypes, we examined RVE protein abundances and degradation rates in blue and red light and found no significant differences between these conditions. We next examined genetic interactions between RVE genes and ZEITLUPE and ELONGATED HYPOCOTYL5, two factors with blue light-specific functions in the clock. We found that the RVEs interact additively with both ZEITLUPE and ELONGATED HYPOCOTYL5 to regulate circadian period, which suggests that neither of these factors are required for the blue light-specific differences that we observed. Overall, our results suggest that the RVEs have separable functions in plant growth and circadian regulation and that they are involved in blue light-specific circadian signaling via a novel mechanism.
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Affiliation(s)
- Cassandra L. Hughes
- Department of Plant BiologyUniversity of California, DavisDavisCaliforniaUSA
| | - Yuyan An
- College of Life SciencesShaanxi Normal UniversityXi'anChina
| | - Julin N. Maloof
- Department of Plant BiologyUniversity of California, DavisDavisCaliforniaUSA
| | - Stacey L. Harmer
- Department of Plant BiologyUniversity of California, DavisDavisCaliforniaUSA
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7
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Jiang X, Zhang L, Li Y, Long R, Yang Q, Kang J. Functional Characterization of the MsFKF1 Gene Reveals Its Dual Role in Regulating the Flowering Time and Plant Height in Medicago sativa L. Plants (Basel) 2024; 13:655. [PMID: 38475501 DOI: 10.3390/plants13050655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/21/2024] [Accepted: 01/22/2024] [Indexed: 03/14/2024]
Abstract
Alfalfa (M. sativa), a perennial legume forage, is known for its high yield and good quality. As a long-day plant, it is sensitive to changes in the day length, which affects the flowering time and plant growth, and limits alfalfa yield. Photoperiod-mediated delayed flowering in alfalfa helps to extend the vegetative growth period and increase the yield. We isolated a blue-light phytohormone gene from the alfalfa genome that is an ortholog of soybean FKF1 and named it MsFKF1. Gene expression analyses showed that MsFKF1 responds to blue light and the circadian clock in alfalfa. We found that MsFKF1 regulates the flowering time through the plant circadian clock pathway by inhibiting the transcription of E1 and COL, thus suppressing FLOWERING LOCUS T a1 (FTa1) transcription. In addition, transgenic lines exhibited higher plant height and accumulated more biomass in comparison to wild-type plants. However, the increased fiber (NDF and ADF) and lignin content also led to a reduction in the digestibility of the forage. The key genes related to GA biosynthesis, GA20OX1, increased in the transgenic lines, while GA2OX1 decreased for the inactive GA transformation. These findings offer novel insights on the function of MsFKF1 in the regulation of the flowering time and plant height in cultivated M. sativa. These insights into MsFKF1's roles in alfalfa offer potential strategies for molecular breeding aimed at optimizing flowering time and biomass yield.
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Affiliation(s)
- Xu Jiang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- College of Life Science and Technology, Harbin Normal University, Harbin 150025, China
| | - Lili Zhang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yajing Li
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Ruicai Long
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Qingchuan Yang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- College of Life Science and Technology, Harbin Normal University, Harbin 150025, China
| | - Junmei Kang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
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8
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Kusumoto J, Akashi M, Terashi H, Sakakibara S. Differential Photosensitivity of Fibroblasts Obtained from Normal Skin and Hypertrophic Scar Tissues. Int J Mol Sci 2024; 25:2126. [PMID: 38396801 PMCID: PMC10889571 DOI: 10.3390/ijms25042126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/04/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
It is unclear whether normal human skin tissue or abnormal scarring are photoreceptive. Therefore, this study investigated photosensitivity in normal skin tissue and hypertrophic scars. The expression of opsins, which are photoreceptor proteins, in normal dermal fibroblasts (NDFs) and hypertrophic scar fibroblasts (HSFs) was examined. After exposure to blue light (BL), changes in the expression levels of αSMA and clock-related genes, specifically PER2 and BMAL1, were examined in both fibroblast types. Opsins were expressed in both fibroblast types, with OPN3 exhibiting the highest expression levels. After peripheral circadian rhythm disruption, BL induced rhythm formation in NDFs. In contrast, although HSFs showed changes in clock-related gene expression levels, no distinct rhythm formation was observed. The expression level of αSMA was significantly higher in HSFs and decreased to the same level as that in NDFs upon BL exposure. When OPN3 knocked-down HSFs were exposed to BL, the reduction in αSMA expression was inhibited. This study showed that BL exposure directly triggers peripheral circadian synchronization in NDFs but not in HSFs. OPN3-mediated BL exposure inhibited HSFs. Although the current results did not elucidate the relationship between peripheral circadian rhythms and hypertrophic scars, they show that BL can be applied for the prevention and treatment of hypertrophic scars and keloids.
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Affiliation(s)
- Junya Kusumoto
- Department of Plastic Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (H.T.); (S.S.)
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan;
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan;
| | - Hiroto Terashi
- Department of Plastic Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (H.T.); (S.S.)
| | - Shunsuke Sakakibara
- Department of Plastic Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (H.T.); (S.S.)
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Austin E, Mineroff J, Dana I, Jagdeo J. Blue light aminolevulinic acid photodynamic therapy downregulates cell division and proliferation pathways in cutaneous squamous cell carcinoma. J Biophotonics 2024:e202300369. [PMID: 38332564 DOI: 10.1002/jbio.202300369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/12/2023] [Accepted: 12/28/2023] [Indexed: 02/10/2024]
Abstract
5-Aminolevulinic acid (5-ALA) photodynamic therapy (PDT) is a treatment for actinic keratosis (AK) and has been studied as a treatment for noninvasive cutaneous squamous cell carcinoma (cSCC). PDT induces apoptosis and necrosis in AKs and cSCC. 5-ALA blue light PDT may modulate gene expression and pathways in surviving cells. In this study, differential gene expression and pathway analysis of cSCC and human dermal fibroblasts were compared before and after 5-ALA blue light PDT using RNA sequencing. No genes were differentially expressed after correcting for multiple testing (false discovery rate < 0.05). As a result, transcription factor, gene enrichment, and pathway analysis were performed with genes identified before multiple testing (p < 0.05). Pathways associated with proliferation and carcinogenesis were downregulated. These findings using 5-ALA blue light PDT are similar to previously published studies using methyl-aminolevulinic and red light protocols, indicating that surviving residual cells may undergo changes consistent with a less aggressive cancerous phenotype.
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Affiliation(s)
- Evan Austin
- Department of Dermatology, SUNY Downstate Medical Center, Brooklyn, New York, USA
- Department of Dermatology, VA New York Harbor Healthcare System, Brooklyn, New York, USA
| | - Jessica Mineroff
- Department of Dermatology, SUNY Downstate Medical Center, Brooklyn, New York, USA
- Department of Dermatology, VA New York Harbor Healthcare System, Brooklyn, New York, USA
| | - Isabella Dana
- Department of Dermatology, SUNY Downstate Medical Center, Brooklyn, New York, USA
- Department of Dermatology, VA New York Harbor Healthcare System, Brooklyn, New York, USA
| | - Jared Jagdeo
- Department of Dermatology, SUNY Downstate Medical Center, Brooklyn, New York, USA
- Department of Dermatology, VA New York Harbor Healthcare System, Brooklyn, New York, USA
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Grunwald Y, Yaaran A, Moshelion M. Illuminating plant water dynamics: the role of light in leaf hydraulic regulation. New Phytol 2024; 241:1404-1414. [PMID: 38155452 DOI: 10.1111/nph.19497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 11/25/2023] [Indexed: 12/30/2023]
Abstract
Light intensity and quality influence photosynthesis directly but also have an indirect effect by increasing stomatal apertures and enhancing gas exchange. Consequently, in areas such as the upper canopy, a high water demand for transpiration and temperature regulation is created. This paper explores how light intensity and the natural high Blue-Light (BL) : Red-Light (RL) ratio in these areas, is important for controlling leaf hydraulic conductance (Kleaf ) by BL signal transduction, increasing water permeability in cells surrounding the vascular tissue, in supporting the enormous water demands. Conversely, shaded inner-canopy areas receive less radiation, have lower water and cooling demands, and exhibit reduced Kleaf due to diminished intensity and BL induction. Intriguingly, shaded leaves display higher water-use efficiency (compared with upper-canopy) due to decreased transpiration and cooling requirements while the presence of RL supports photosynthesis.
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Affiliation(s)
- Yael Grunwald
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel
- The Plant & Environmental Sciences Department, Weizmann Institute of Science, Rehovot, 7632706, Israel
| | - Adi Yaaran
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel
| | - Menachem Moshelion
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel
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Lee H, Depuydt S, Shin K, De Saeger J, Han T, Park J. Interactive Effects of Blue Light and Water Turbulence on the Growth of the Green Macroalga Ulva australis (Chlorophyta). Plants (Basel) 2024; 13:266. [PMID: 38256819 PMCID: PMC10820934 DOI: 10.3390/plants13020266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/06/2024] [Accepted: 01/15/2024] [Indexed: 01/24/2024]
Abstract
Macroalgal growth and yield are key to sustainable aquaculture. Although light and water turbulence are two important factors that affect algal productivity, research on their interaction is limited. Therefore, in this study, we investigated the effects of different wavelengths of light and the presence or absence of water turbulence on the growth of the green macroalga Ulva australis. Water turbulence was found to enhance the growth of U. australis irrespective of photosynthetic performance, but only in blue light cultures. The quantum dose of blue light required to induce 50% growth promotion was 1.02 mol m-2, which is comparable to the reported values for cryptochrome-mediated effects in other macroalgae. The combined effect of blue light and water turbulence led to the accumulation of photosynthesis-related proteins that support plastid differentiation and facilitate efficient photosynthesis and growth. Our findings thus highlight the potential of harnessing blue light and water turbulence to maximise macroalgal cultivation for sustainable and profitable algal aquaculture.
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Affiliation(s)
- Hojun Lee
- Bio Environmental Science and Technology (BEST) Lab, Ghent University Global Campus, 119-5, Songdomunhwa-ro, Incheon 21985, Republic of Korea
| | - Stephen Depuydt
- Erasmus Brussels University of Applied Sciences and Arts, Nijverheidskaai 170, 1070 Brussels, Belgium
| | - Kisik Shin
- Water Environmental Engineering Research Division, National Institute of Environmental Research (NIER), 42, Hwangyeong-ro, Incheon 22689, Republic of Korea
| | - Jonas De Saeger
- Bio Environmental Science and Technology (BEST) Lab, Ghent University Global Campus, 119-5, Songdomunhwa-ro, Incheon 21985, Republic of Korea
| | - Taejun Han
- Bio Environmental Science and Technology (BEST) Lab, Ghent University Global Campus, 119-5, Songdomunhwa-ro, Incheon 21985, Republic of Korea
- Department of Animal Sciences and Aquatic Ecology, Ghent University, Coupure Links 653-Block F, B-9000 Gent, Belgium
| | - Jihae Park
- Bio Environmental Science and Technology (BEST) Lab, Ghent University Global Campus, 119-5, Songdomunhwa-ro, Incheon 21985, Republic of Korea
- Department of Animal Sciences and Aquatic Ecology, Ghent University, Coupure Links 653-Block F, B-9000 Gent, Belgium
- Center for Environmental and Energy Research, Ghent University Global Campus, 119-5, Songdomunhwa-ro, Incheon 21985, Republic of Korea
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12
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Minor M, Sabillón L. Effectiveness of Ultra-High Irradiance Blue-Light-Emitting Diodes to Control Salmonella Contamination Adhered to Dry Stainless Steel Surfaces. Microorganisms 2024; 12:103. [PMID: 38257930 PMCID: PMC10819507 DOI: 10.3390/microorganisms12010103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/01/2024] [Accepted: 01/03/2024] [Indexed: 01/24/2024] Open
Abstract
Controlling Salmonella contamination in dry food processing environments represents a significant challenge due to their tolerance to desiccation stress and enhanced thermal resistance. Blue light is emerging as a safer alternative to UV irradiation for surface decontamination. In the present study, the antimicrobial efficacy of ultra-high irradiance (UHI) blue light, generated by light-emitting diodes (LEDs) at wavelengths of 405 nm (841.6 mW/cm2) and 460 nm (614.9 mW/cm2), was evaluated against a five-serovar cocktail of Salmonella enterica dry cells on clean and soiled stainless steel (SS) surfaces. Inoculated coupons were subjected to blue light irradiation treatments at equivalent energy doses ranging from 221 to 1106 J/cm2. Wheat flour was used as a model food soil system. To determine the bactericidal mechanisms of blue light, the intracellular concentration of reactive oxygen species (ROS) in Salmonella cells and the temperature changes on SS surfaces were also measured. The treatment energy dose had a significant effect on Salmonella inactivation levels. On clean SS surfaces, the reduction in Salmonella counts ranged from 0.8 to 7.4 log CFU/cm2, while, on soiled coupons, the inactivation levels varied from 1.2 to 4.2 log CFU/cm2. Blue LED treatments triggered a significant generation of ROS within Salmonella cells, as well as a substantial temperature increase in SS surfaces. However, in the presence of organic matter, the oxidative stress in Salmonella cells declined significantly, and treatments with higher energy doses (>700 J/cm2) were required to uphold the antimicrobial effectiveness observed on clean SS. The mechanism of the bactericidal effect of UHI blue LED treatments is likely to be a combination of photothermal and photochemical effects. These results indicate that LEDs emitting UHI blue light could represent a novel cost- and time-effective alternative for controlling microbial contamination in dry food processing environments.
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Affiliation(s)
- Martha Minor
- Department of Family & Consumer Sciences, New Mexico State University, Las Cruces, NM 88003, USA
| | - Luis Sabillón
- Department of Family & Consumer Sciences, New Mexico State University, Las Cruces, NM 88003, USA
- Center of Excellence in Sustainable Food and Agricultural Systems, New Mexico State University, Las Cruces, NM 88003, USA
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13
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Zhang Y, Sun X, Aphalo PJ, Zhang Y, Cheng R, Li T. Ultraviolet-A1 radiation induced a more favorable light-intercepting leaf-area display than blue light and promoted plant growth. Plant Cell Environ 2024; 47:197-212. [PMID: 37743709 DOI: 10.1111/pce.14727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 08/20/2023] [Accepted: 09/10/2023] [Indexed: 09/26/2023]
Abstract
Plants adjust their morphology in response to light environment by sensing an array of light cues. Though the wavelengths of ultraviolet-A1 radiation (UV-A1, 350-400 nm) are close to blue light (B, 400-500 nm) and share same flavoprotein photoreceptors, it remains poorly understood how plant responses to UV-A1 radiation could differ from those to B. We initially grown tomato plants under monochromatic red light (R, 660 nm) as control, subsequently transferred them to four dichromatic light treatments containing ~20 µmol m-2 s-1 of UV-A1 radiation, peaking at 370 nm (UV-A370 ) or 400 nm (V400 ), or B (450 nm, at ~20 or 1.5 µmol m-2 s-1 ), with same total photon irradiance (~200 μmol m-2 s-1 ). We show that UV-A370 radiation was the most effective in inducing light-intercepting leaf-area display formation, resulting in larger leaf area and more shoot biomass, while it triggered weaker and later transcriptome-wide responses than B. Mechanistically, UV-A370 -promoted leaf-area display response was apparent in less than 12 h and appeared as very weakly related to transcriptome level regulation, which likely depended on the auxin transportation and cell wall acidification. This study revealed wavelength-specific responses within UV-A/blue region challenging usual assumptions that the role of UV-A1 radiation function similarly as blue light in mediating plant processes.
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Affiliation(s)
- Yating Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China
- Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Xuguang Sun
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Pedro J Aphalo
- Organismal and Evolutionary Biology, Viikki Plant Science Centre, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Yuqi Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ruifeng Cheng
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Tao Li
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China
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14
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Winkie MJ, Sakunchotpanit G, Salazar CE, Gunasekera NS, Buzney EA, Nambudiri VE. A focused review of visible light therapies for vitiligo. Photodermatol Photoimmunol Photomed 2024; 40:e12939. [PMID: 38084061 DOI: 10.1111/phpp.12939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/16/2023] [Accepted: 11/28/2023] [Indexed: 01/31/2024]
Abstract
BACKGROUND Vitiligo can be challenging to treat and exhibit an unpredictable clinical course. Phototherapy in the form of visible light can achieve both repigmentation and depigmentation outcomes in vitiligo, with minimal associated adverse events. This review focuses on the mechanistic understandings and clinical outcomes of visible light-based treatments for vitiligo. METHODS Articles were retrieved from PubMed starting from May 1965 until August 2023, yielding 496 unique articles. We conducted title, abstract, and full-text screening to identify articles describing the use of visible light (380-750 nm), either as part of combination therapy or as monotherapy, for repigmentation or depigmentation treatment in vitiligo. RESULTS Twenty-seven articles met inclusion criteria, offering preclinical and clinical data regarding the utilization of helium-neon laser (red light) and blue light-emitting diodes (LEDs) as methods of repigmentation therapy in vitiligo. Preclinical and clinical data on the utilization of Q-switched ruby laser (694 nm) and frequency-doubled (FD) Nd:YAG laser (532 nm) for vitiligo depigmentation therapy were also identified. CONCLUSION While limited by small studies and a lack of standardized administration of phototherapy, the evidence for visible light's effectiveness in managing vitiligo is encouraging. Red light therapy using He-Ne lasers and blue light therapy via LEDs can stimulate repigmentation in patients with vitiligo with minimal adverse events. Q-switched ruby and FD Nd:YAG lasers provide viable, visible light depigmentation options, either alone or with topical agents. With limited clinical data, larger studies are needed to validate the efficacy of visible light therapy in treating vitiligo and to better understand its long-term outcomes.
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Affiliation(s)
- Mitchell J Winkie
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Goranit Sakunchotpanit
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Carlos E Salazar
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Nicole S Gunasekera
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Elizabeth A Buzney
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Vinod E Nambudiri
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
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15
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Buniowska I, Wronski N, Insinska-Rak M, Sikorski M, Wolnicka-Glubisz A. Tetraacetyl riboflavin derivative mediates caspase 3/7 activation via MAPK in A431 cells upon blue light influence. Photochem Photobiol 2024; 100:204-213. [PMID: 37029736 DOI: 10.1111/php.13806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 04/09/2023]
Abstract
An acetylated riboflavin derivative, 3-methyl-tetraacetyl riboflavin (3MeTARF), is a compound with high photostability and photophysical properties similar to riboflavin, including the ability to photogenerate singlet oxygen. In the present study, we compared the effects of irradiation on A431 cancer cells with blue LED light (438 nm) in the presence of 3MeTARF and riboflavin on MAPK phosphorylation, apoptosis, caspase 3/7 activation and PARP cleavage. We observed that photogenerated oxidative stress in this reaction activates MAPK by increasing phosphorylation of p38 and JNK proteins. Preincubation of cells with inhibitors specific for phosphorylation of p38 and JNK proteins (SB203580, SP600125), respectively, results in decreased caspase 3/7 activation and PARP cleavage. We showed that the tetraacetyl derivative more effectively activates MAPK and skin cancer cell death compared to riboflavin. These data, together with results of our previous study, support the hypothesis that 3MeTARF, of riboflavin, might be more useful and desirable as a compound for use in photodynamic oxidation processes, including its therapeutic potential.
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Affiliation(s)
- Izabela Buniowska
- Department of Biophysics and Cancer Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Norbert Wronski
- Department of Biophysics and Cancer Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | | | - Marek Sikorski
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
| | - Agnieszka Wolnicka-Glubisz
- Department of Biophysics and Cancer Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
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16
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Jin S, Zhang W, Zeng W, Zhang Y, Feng J, Wang Y, Luo H, Liu T, Lu H. In vitro differentiation of human amniotic epithelial stem cells into keratinocytes regulated by OPN3. Exp Dermatol 2024; 33:e15007. [PMID: 38284195 DOI: 10.1111/exd.15007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/17/2023] [Accepted: 12/17/2023] [Indexed: 01/30/2024]
Abstract
Human amniotic epithelial stem cells (hAESCs) are regarded as potential alternatives to keratinocytes (KCs) used for skin wound healing. Light is an alternative approach for inducing stem cell differentiation. Opsins (OPNs), a family of light-sensitive, G protein-coupled receptors, play a multitude of light-dependent and light-independent functions in extraocular tissues. However, it remains unclear whether the light sensitivity and function of OPNs are involved in light-induced differentiation of hAESCs to KCs. Herein, we determine the role of OPNs in differentiation of hAESCs into KCs through cell and molecular biology approaches in vitro. It is shown that mRNA expression of OPN3 in the amniotic membrane and hAESCs was higher than the other four primary OPNs by RT-qPCR analysis. Changes in OPN3 gene expression had a significant impact on cell proliferation, stemness and differentiation capability of hAESCs. Furthermore, we found a significant upregulation of OPN3, KRT5 and KRT14 with hAESCs treated at 3 × 33 J/cm2 irradiation from blue-light LED. Taken together, these results suggest that OPN3 acts as a positive regulator of differentiation of hAESCs into KCs. This study provides a novel insight into photosensitive OPNs associated with photobiomodulation(PBM)-induced differentiation in stem cells.
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Affiliation(s)
- Shuqi Jin
- Department of Dermatology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
| | - Wei Zhang
- Department of Dermatology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
| | - Wen Zeng
- Department of Dermatology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
| | - Yulei Zhang
- Department of Dermatology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
| | - Jianglong Feng
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
| | - Yu Wang
- Department of Dermatology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
| | - Huanhuan Luo
- Department of Dermatology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
| | - Ting Liu
- Department of Dermatology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
| | - Hongguang Lu
- Department of Dermatology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
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17
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Zhang Y, Zheng J, Zhan Y, Yu Z, Liu S, Lu X, Li Y, Li Z, Liang X, Li H, Feng Y, Teng W, Li W, Han Y, Zhao X, Li Y. GmPLP1 negatively regulates soybean resistance to high light stress by modulating photosynthetic capacity and reactive oxygen species accumulation in a blue light-dependent manner. Plant Biotechnol J 2023; 21:2625-2640. [PMID: 37594728 PMCID: PMC10651158 DOI: 10.1111/pbi.14158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 07/23/2023] [Accepted: 07/28/2023] [Indexed: 08/19/2023]
Abstract
High light stress is an important factor limiting crop yield. Light receptors play an important role in the response to high light stress, but their mechanisms are still poorly understood. Here, we found that the abundance of GmPLP1, a positive blue light receptor protein, was significantly inhibited by high light stress and mainly responded to high blue light. GmPLP1 RNA-interference soybean lines exhibited higher light energy utilization ability and less light damage and reactive oxygen species (ROS) accumulation in leaves under high light stress, while the phenotype of GmPLP1:GmPLP1-Flag overexpression soybean showed the opposite characteristics. Then, we identified a protein-protein interaction between GmPLP1 and GmVTC2, and the intensity of this interaction was primarily affected by sensing the intensity of blue light. More importantly, overexpression of GmVTC2b improved soybean tolerance to high light stress by enhancing the ROS scavenging capability through increasing the biosynthesis of ascorbic acid. This regulation was significantly enhanced after interfering with a GmPLP1-interference fragment in GmVTC2b-ox soybean leaves, but was weakened when GmPLP1 was transiently overexpressed. These findings demonstrate that GmPLP1 regulates the photosynthetic capacity and ROS accumulation of soybean to adapt to changes in light intensity by sensing blue light. In summary, this study discovered a new mechanism through which GmPLP1 participates in high light stress in soybean, which has great significance for improving soybean yield and the adaptability of soybean to high light.
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Affiliation(s)
- Yanzheng Zhang
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Jiqiang Zheng
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Yuhang Zhan
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Zhenhai Yu
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
- Heilongjiang Green Food Science Research InstituteHarbinChina
| | - Shuhan Liu
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Xiangpeng Lu
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Yue Li
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Zeyang Li
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Xiaoyue Liang
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Haibin Li
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Yuan Feng
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Weili Teng
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Wenbin Li
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Yingpeng Han
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Xue Zhao
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
| | - Yongguang Li
- Key Laboratory of Soybean Biology of Ministry of Education China, Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinChina
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18
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Buhl T, Santibanez Santana M, Forkel S, Kromer C, Seidel J, Möbs C, Pfützner W, Pfeiffer S, Laubach HJ, Boehncke WH, Liebmann J, Born M, Schön MP. Full-body blue light irradiation as treatment for atopic dermatitis: a randomized sham-controlled clinical trial (AD-Blue). J Dtsch Dermatol Ges 2023; 21:1500-1510. [PMID: 37814388 DOI: 10.1111/ddg.15211] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 07/19/2023] [Indexed: 10/11/2023]
Abstract
BACKGROUND Visible blue light (wavelength 400-495 nm) is a promising new treatment option for both psoriasis and atopic dermatitis (AD). Whilst previous clinical trials featured various devices and blue light at a variety of wavelengths, none of these interventions were challenged in objective clinical criteria. PATIENTS AND METHODS Eighty-seven patients diagnosed with AD were enrolled in AD-Blue, an international, prospective, double-blinded, three-armed (415 nm vs. 450 nm vs. sham control), randomized trial designed to investigate the safety and efficacy of prototype full-body blue light devices. RESULTS Full-body irradiation with 450 nm blue light but not 415 nm had a significant impact on itch (Itch-VAS, -1.6 ± 2.3; p = 0.023 vs. sham irradiation). PO-SCORAD values also decreased significantly in response to irradiation at 415 nm (-11.5 ± 18.4; p = 0.028 vs. sham irradiation). None of the other outcome measures (EASI, SCORAD, IGA, DLQI) changed significantly. No safety signals were observed. Evaluation of skin transcriptomes, cytokine levels in serum, and ELISpots from peripheral blood mononuclear cells isolated from a subset of patients revealed moderate decreases in IL-31 in response to irradiation with blue light. CONCLUSIONS Despite its favorable safety profile and moderate reductions in itch and IL-31 levels, full-body blue light irradiation did not lead to an amelioration of any of the objective measures of AD.
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Affiliation(s)
- Timo Buhl
- University Medical Centre Göttingen, Department of Dermatology, Venereology, and Allergology, Göttingen, Germany
- Lower Saxony Institute of Occupational Dermatology, University Medical Centre Göttingen, Göttingen, Germany
| | - Marisol Santibanez Santana
- University Medical Centre Göttingen, Department of Dermatology, Venereology, and Allergology, Göttingen, Germany
| | - Susann Forkel
- University Medical Centre Göttingen, Department of Dermatology, Venereology, and Allergology, Göttingen, Germany
| | - Christian Kromer
- University Medical Centre Göttingen, Department of Dermatology, Venereology, and Allergology, Göttingen, Germany
| | - Julia Seidel
- Clinical and Experimental Allergology, Department of Dermatology and Allergology, Philipps University Marburg, Marburg, Germany
| | - Christian Möbs
- Clinical and Experimental Allergology, Department of Dermatology and Allergology, Philipps University Marburg, Marburg, Germany
| | - Wolfgang Pfützner
- Clinical and Experimental Allergology, Department of Dermatology and Allergology, Philipps University Marburg, Marburg, Germany
| | - Sebastian Pfeiffer
- University Medical Centre Göttingen, Clinical Trials Unit, Göttingen, Germany
| | - Hans-Joachim Laubach
- Division of Dermatology and Venereology, Geneva University Hospitals, Geneva, Switzerland
| | - Wolf-Henning Boehncke
- Division of Dermatology and Venereology, Geneva University Hospitals, Geneva, Switzerland
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - Joerg Liebmann
- Philips Innovation and Strategy, Eindhoven, The Netherlands
| | - Matthias Born
- Philips Innovation and Strategy, Eindhoven, The Netherlands
| | - Michael Peter Schön
- University Medical Centre Göttingen, Department of Dermatology, Venereology, and Allergology, Göttingen, Germany
- Lower Saxony Institute of Occupational Dermatology, University Medical Centre Göttingen, Göttingen, Germany
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19
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Huang J, Zhou F, Zhou H, Zheng X, Huo Z, Yang M, Xu Z, Liu R, Wang L, Wang X. Systematic assessment of transcriptomic and metabolic reprogramming by blue light exposure coupled with aging. PNAS Nexus 2023; 2:pgad390. [PMID: 38059264 PMCID: PMC10697416 DOI: 10.1093/pnasnexus/pgad390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 11/06/2023] [Indexed: 12/08/2023]
Abstract
The prevalent use of light-emitting diodes (LEDs) has caused revolutionary changes in modern life, but the potential hazards to health of blue light are poorly understood. N6-methyladenosine (m6A) is the most prevalent posttranscriptional modification in eukaryotes and can modulate diverse physiological processes by regulating mRNA fate. Here, to understand the effects and molecular mechanisms of daily low-intensity blue light exposure (BLE) and ascertain whether m6A methylation plays a role in BLE-induced phenotypes, we constructed a series of Drosophila models under different durations of daily low-intensity BLE and obtained multiomics profiles. Our results revealed that BLE could induce transcriptomic, m6A epitranscriptomic, and metabolomic reprogramming in Drosophila along with aging process. Importantly, the m6A methylation sites enriched in the 5' untranslated regions (UTRs) of Drosophila transcripts showed strong age specificity and could be altered by BLE. We experimentally validated that aging-related gene Tor and circadian rhythm-related gene per were regulated by 5' UTR-enriched m6A methylation. Overall, our study provides a systematic assessment of m6A RNA methylome reprogramming by BLE and aging in Drosophila model.
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Affiliation(s)
- Jia Huang
- Department of Entomology, South China Agricultural University, Guangzhou 510642, China
| | - Fan Zhou
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Huanchan Zhou
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Xiaoqi Zheng
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Zhengyi Huo
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Meng Yang
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Zihe Xu
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Runzhou Liu
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Luoluo Wang
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Xiaoyun Wang
- Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou 510631, China
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20
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Buhl T, Santibanez Santana M, Forkel S, Kromer C, Seidel J, Möbs C, Pfützner W, Pfeiffer S, Laubach HJ, Boehncke WH, Liebmann J, Born M, Schön MP. Ganzkörper-Blaulichtbestrahlung zur Behandlung der atopischen Dermatitis: eine randomisierte, placebokontrollierte klinische Studie (AD-Blue). J Dtsch Dermatol Ges 2023; 21:1500-1512. [PMID: 38082514 DOI: 10.1111/ddg.15211_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 07/19/2023] [Indexed: 12/18/2023]
Abstract
ZusammenfassungHintergrundSichtbares blaues Licht (Wellenlänge 400–495 nm) ist eine vielversprechende neue Behandlungsoption sowohl für Psoriasis als auch für atopische Dermatitis (AD). In früheren klinischen Studien wurden zwar verschiedene Geräte und blaues Licht mit unterschiedlichen Wellenlängen eingesetzt, aber keine dieser Prozeduren wurde anhand objektiver klinischer Kriterien geprüft.Patienten und Methodik87 Patienten mit AD wurden in die AD‐Blue‐Studie aufgenommen, eine internationale, prospektive, doppelblinde, dreiarmige (415 nm vs. 450 nm vs. Placebo), randomisierte Studie zur Untersuchung der Sicherheit und Wirksamkeit von Prototypen von Ganzkörper‐Blaulicht‐Bestrahlungsgeräten.ErgebnisseDie Ganzkörper‐Bestrahlung mit 450 nm blauem Licht, aber nicht mit 415 nm, hatte einen signifikant positiven Einfluss auf den Juckreiz (Pruritus‐VAS, –1,6 ± 2,3; p = 0,023 gegenüber der Placebobestrahlung). Die PO‐SCORAD‐Werte sanken ebenfalls signifikant als Reaktion auf die Bestrahlung bei 415 nm (–11,5 ± 18,4; p = 0,028 im Vergleich zur Placebobestrahlung). Keines der anderen Ergebnisse (EASI, SCORAD, IGA, DLQI) veränderte sich signifikant. Es wurden keine Sicherheitsprobleme beobachtet. Die Auswertung von Hauttranskriptomdaten, Zytokinspiegeln im Serum und ELISpots aus mononukleären Zellen des peripheren Blutes, die von einer Untergruppe von Patienten isoliert wurden, ergab eine moderate Abnahme von IL‐31 als Reaktion auf die Bestrahlung mit blauem Licht.SchlussfolgerungenTrotz des günstigen Sicherheitsprofils und der mäßigen Verringerung von Pruritus und IL‐31‐Spiegel führte die Ganzkörper‐Blaulichtbestrahlung bei AD zu keiner Verbesserung der objektiven Parameter zu Krankheitsschwere.
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Affiliation(s)
- Timo Buhl
- Universitätsmedizin Göttingen, Klinik für Dermatologie, Venerologie und Allergologie, Göttingen, Deutschland
- Niedersächsisches Institut für Berufsdermatologie, 1Universitätsmedizin Göttingen, Göttingen, Deutschland
| | - Marisol Santibanez Santana
- Universitätsmedizin Göttingen, Klinik für Dermatologie, Venerologie und Allergologie, Göttingen, Deutschland
| | - Susann Forkel
- Universitätsmedizin Göttingen, Klinik für Dermatologie, Venerologie und Allergologie, Göttingen, Deutschland
| | - Christian Kromer
- Universitätsmedizin Göttingen, Klinik für Dermatologie, Venerologie und Allergologie, Göttingen, Deutschland
| | - Julia Seidel
- Klinische und experimentelle Allergologie, Klinik für Dermatologie und Allergologie, Philipps-Universität Marburg, Marburg, Deutschland
| | - Christian Möbs
- Klinische und experimentelle Allergologie, Klinik für Dermatologie und Allergologie, Philipps-Universität Marburg, Marburg, Deutschland
| | - Wolfgang Pfützner
- Klinische und experimentelle Allergologie, Klinik für Dermatologie und Allergologie, Philipps-Universität Marburg, Marburg, Deutschland
| | - Sebastian Pfeiffer
- Universitätsmedizin Göttingen, Abteilung für klinische Studien, Göttingen, Deutschland
| | - Hans-Joachim Laubach
- Abteilung für Dermatologie und Venerologie, Universitätskliniken Genf, Genf, Schweiz
| | - Wolf-Henning Boehncke
- Abteilung für Dermatologie und Venerologie, Universitätskliniken Genf, Genf, Schweiz
- Abteilung für Pathologie und Immunologie, Universität Genf, Genf, Schweiz
| | | | - Matthias Born
- Philips Innovation und Strategie, Eindhoven, Niedelande
| | - Michael Peter Schön
- Universitätsmedizin Göttingen, Klinik für Dermatologie, Venerologie und Allergologie, Göttingen, Deutschland
- Niedersächsisches Institut für Berufsdermatologie, 1Universitätsmedizin Göttingen, Göttingen, Deutschland
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21
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Tóthová Tarová E, Darvay S, Fehér Z, Nagy M, Szencziová I, Dancsa D, Himpán V, Winkler É, Balázs P, Konečná M, Sedlák V, Zahatňanská M, Bernátová R, Poráčová J. Examining the sleeping habits of preschool and elementary school children in Southern Slovakia. Cent Eur J Public Health 2023; 31:S48-S54. [PMID: 38272478 DOI: 10.21101/cejph.a7896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 11/03/2023] [Indexed: 01/27/2024]
Abstract
OBJECTIVES Our research aimed to examine children's sleeping habits from preschool to the end of elementary school age. Developing proper sleeping habits in childhood is essential, as it is decisive for the rest of our lives. METHODS A total of 339 children (160 males and 179 females) took part in the research, of which 145 were preschool-age children (3-7 years old), 72 lower-grade elementary school children (6-11 years old), and 122 upper-grade elementary school children (12-16 years old). The questionnaire was completed in a paper form (elementary school students) and online (kindergarten children). RESULTS The research results show that most of the children spend enough time sleeping following the recommendations. In case of the kindergarten children, the younger ones also sleep in the afternoon on weekends (average of 3.66 years, 28.3%), and the older ones do not sleep in the afternoon either in kindergarten during the week or at home at the weekend (average of 5.22 years, 46.2%). The use of blue light typically increases with age; 39% of the preschoolers, 61% of the 6-11-year-olds, and 67% of the 12-16-year-olds use it before falling asleep. Sleep aids and rituals are used by 87.6% of the preschoolers, 67.4% of the 6-11-year-olds, and 34.4% of the 12-16-year-olds, because significantly more preschoolers find it more difficult to fall asleep than older children. At night, 40% of the preschoolers wake up at least once (due to biological needs - 46.3%), 32% of the 6-11-year-olds wake up at night (due to nightmares - 42.3%), and 41% of the 12-16-year-olds also wake up all night (due to biological needs - 31.9%, and due to noise - 29.8%). CONCLUSION Although the children get enough sleep, significantly more upper-grade school children feel tired in the morning. It is essential to help sleep and eliminate factors that prevent falling asleep to create a healthy circadian rhythm in the life of children.
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Affiliation(s)
- Eva Tóthová Tarová
- Department of Biology, Faculty of Education, J. Selye University, Komarno, Slovak Republic
- Institute for Clinical and Translational Research, Biomedical Research Centre, Slovak Academy of Sciences, Bratislava, Slovak Republic
| | - Sarolta Darvay
- Department of Biology, Faculty of Education, J. Selye University, Komarno, Slovak Republic
| | - Zoltán Fehér
- Department of Mathematics, Faculty of Economics and Informatics, J. Selye University, Komarno, Slovak Republic
| | - Melinda Nagy
- Department of Biology, Faculty of Education, J. Selye University, Komarno, Slovak Republic
| | - Iveta Szencziová
- Department of Biology, Faculty of Education, J. Selye University, Komarno, Slovak Republic
| | - Dániel Dancsa
- Department of Biology, Faculty of Education, J. Selye University, Komarno, Slovak Republic
| | - Veronika Himpán
- Department of Biology, Faculty of Education, J. Selye University, Komarno, Slovak Republic
| | - Éva Winkler
- Department of Biology, Faculty of Education, J. Selye University, Komarno, Slovak Republic
| | - Pavol Balázs
- Department of Biology, Faculty of Education, J. Selye University, Komarno, Slovak Republic
| | - Mária Konečná
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
| | - Vincent Sedlák
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
| | - Mária Zahatňanská
- Institute of Pedagogy, Andragogy and Psychology, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
| | - Renáta Bernátová
- Department of Natural Sciences and Technological Disciplines, Faculty of Education, University of Presov, Presov, Slovak Republic
| | - Janka Poráčová
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
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22
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Leanse LG, dos Anjos C, Kaler KR, Hui J, Boyd JM, Hooper DC, Anderson RR, Dai T. Blue Light Potentiates Antibiotics in Bacteria via Parallel Pathways of Hydroxyl Radical Production and Enhanced Antibiotic Uptake. Adv Sci (Weinh) 2023; 10:e2303731. [PMID: 37946633 PMCID: PMC10754126 DOI: 10.1002/advs.202303731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/13/2023] [Indexed: 11/12/2023]
Abstract
In the age of antimicrobial resistance, the urgency by which novel therapeutic approaches need to be introduced into the clinical pipeline has reached critical levels. Antimicrobial blue light (aBL), as an alternative approach, has demonstrated promise as a stand-alone therapeutic method, albeit with a limited window of antimicrobial activity. Work by others indicates that treatment with antibiotics increases the production of reactive oxygen species (ROS) which may, in part, contribute to the bactericidal effects of antibiotics. These findings suggest that there may be potential for synergistic interactions with aBL, that similarly generates ROS. Therefore, in this study, the mechanism of aBL is investigated, and the potential for aBL to synergistically promote antibiotic activity is similarly evaluated. Furthermore, the translatability of using aBL and chloramphenicol in combination within a mouse model of Acinetobacter baumanii burn infection is assessed. It is concluded that porphyrins and hydroxyl radicals driven by "free iron" are paramount to the effectiveness of aBL; and aBL is effective at promoting multiple antibiotics in different multidrug-resistant bacteria. Moreover, rROS up-regulation, and promoted antibiotic uptake are observed during aBL+antibiotic exposure. Lastly, aBL combined with chloramphenicol appears to be both effective and safe for the treatment of A. baumannii burn infection. In conclusion, aBL may be a useful adjunct therapy to antibiotics to potentiate their action.
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Affiliation(s)
- Leon G. Leanse
- Wellman Center for PhotomedicineMassachusetts General Hospital, Harvard Medical SchoolBostonMA02114USA
- Health and Sports Sciences HubUniversity of Gibraltar, Europa Point CampusGibraltarGX11 1AAGibraltar
| | - Carolina dos Anjos
- Wellman Center for PhotomedicineMassachusetts General Hospital, Harvard Medical SchoolBostonMA02114USA
| | - Kylie Ryan Kaler
- Department of Biochemistry and MicrobiologyRutgers UniversityNew BrunswickNew Jersey08901USA
| | - Jie Hui
- Wellman Center for PhotomedicineMassachusetts General Hospital, Harvard Medical SchoolBostonMA02114USA
| | - Jeffrey M. Boyd
- Department of Biochemistry and MicrobiologyRutgers UniversityNew BrunswickNew Jersey08901USA
| | - David C. Hooper
- Division of Infectious DiseasesMassachusetts General Hospital, Harvard Medical SchoolBostonMA02114USA
| | - R. Rox Anderson
- Wellman Center for PhotomedicineMassachusetts General Hospital, Harvard Medical SchoolBostonMA02114USA
| | - Tianhong Dai
- Wellman Center for PhotomedicineMassachusetts General Hospital, Harvard Medical SchoolBostonMA02114USA
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23
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Montero P, Roger I, Milara J, Cortijo J. Damaging effects of UVA, blue light, and infrared radiation: in vitro assessment on a reconstructed full-thickness human skin. Front Med (Lausanne) 2023; 10:1267409. [PMID: 38105899 PMCID: PMC10722227 DOI: 10.3389/fmed.2023.1267409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 11/07/2023] [Indexed: 12/19/2023] Open
Abstract
Introduction Exposure to solar radiation can cause a range of skin damage, including sunburn, erythema, skin carcinogenesis, the release of reactive oxygen species (ROS), inflammation, DNA damage, and photoaging. Other wavelengths beyond UVB, such as UVA, blue light, and infrared radiation, can also contribute to the harmful effects of solar radiation. Reconstructed full-thickness human skin has the potential to serve as effective predictive in vitro tools for evaluating the effects of solar radiation on the skin. The aim of this work was to evaluate the damaging effects of UVA, blue light, and infrared radiation in a full-thickness skin model in terms of viability, inflammation, photoaging, tissue damage, photocarcinogenesis. Methods Full thickness skin models were purchased from Henkel (Phenion FT; Düsseldorf, Germany), and irradiated with increasing doses of UVA, blue light, or infrared radiation. Different endpoints were analyzed on the tissues: Hematoxylin-eosin staining, inflammation mediators, photoaging-related dermal markers and oxidative stress marker GPX1, evaluated by real-time quantitative PCR, as well as photocarcinogenesis markers by Western Blot. Results and Discussion The results showed differential responses in cytokine release for each light source. In terms of photoaging biomarkers, collagen, metalloproteinases 1 and 9, elastin, and decorin were modulated by UVA and blue light exposure, while not all these markers were affected by infrared radiation. Furthermore, exposure to UVA and blue light induced loss of fibroblasts and modulation of the photocarcinogenesis markers p53 and p21. In conclusion, the presented results suggest that the various wavelengths of solar light have distinct and differential damaging effects on the skin. Understanding the differential effects of UVA, blue light, and infrared radiation can serve as a valuable tool to investigate the efficacy of photoprotective agents in full thickness skin models.
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Affiliation(s)
- Paula Montero
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain
- Faculty of Health Sciences, Universidad Europea de Valencia, Valencia, Spain
- Biomedical Research Networking Centre on Respiratory Diseases (CIBERES), Health Institute Carlos III, Madrid, Spain
| | - Inés Roger
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain
- Faculty of Health Sciences, Universidad Europea de Valencia, Valencia, Spain
- Biomedical Research Networking Centre on Respiratory Diseases (CIBERES), Health Institute Carlos III, Madrid, Spain
| | - Javier Milara
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain
- Biomedical Research Networking Centre on Respiratory Diseases (CIBERES), Health Institute Carlos III, Madrid, Spain
- Pharmacy Unit, University General Hospital Consortium, Valencia, Spain
| | - Julio Cortijo
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain
- Biomedical Research Networking Centre on Respiratory Diseases (CIBERES), Health Institute Carlos III, Madrid, Spain
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24
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Comeau P, Manso A. A Systematic Evaluation of Curcumin Concentrations and Blue Light Parameters towards Antimicrobial Photodynamic Therapy against Cariogenic Microorganisms. Pharmaceutics 2023; 15:2707. [PMID: 38140048 PMCID: PMC10747634 DOI: 10.3390/pharmaceutics15122707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
Dental caries is a highly preventable and costly disease. Unfortunately, the current management strategies are inadequate at reducing the incidence and new minimally invasive strategies are needed. In this study, a systematic evaluation of specific light parameters and aqueous curcumin concentrations for antimicrobial photodynamic therapy (aPDT) was conducted. Aqueous solutions of curcumin were first prepared and evaluated for their light absorbance after applying different ~56 mW/cm2 blue light treatments in a continuous application mode. Next, these same light treatments as well as different application modes were applied to the curcumin solutions and the molar absorptivity coefficient, reactive oxygen species (ROS) release, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) for Streptococcus mutans and the MIC and minimum fungicidal concentration (MFC) for Candida albicans were measured. After up to 1 min of light treatment, the molar absorptivity of curcumin when added to culture media was lower than that for water only; however, at higher energy levels, this difference was not apparent. There was a noted dependence on both ROS type and cariogenic microorganism species on the sensitivity to both blue light treatment and application mode. In conclusion, this study provides new information towards improving the agonistic potential of aPDT associated with curcumin against cariogenic microorganisms.
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Affiliation(s)
- Patricia Comeau
- Department of Oral Health Science, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada;
- Department of Chemical and Materials Engineering, Concordia University, Montreal, QC H3G 2W1, Canada
| | - Adriana Manso
- Department of Oral Health Science, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada;
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25
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Nishiyama T, Tsujinaka H, Ueda T, Ogata N. Alteration in Melanin Content in Retinal Pigment Epithelial Cells upon Hydroquinone Exposure. Int J Mol Sci 2023; 24:16801. [PMID: 38069124 PMCID: PMC10706107 DOI: 10.3390/ijms242316801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 12/18/2023] Open
Abstract
Abnormal pigmentation or depigmentation of the retinal pigment epithelium (RPE) is a precursor to neovascular age-related macular degeneration (nAMD). In this study, we evaluated the effects of hydroquinone (HQ), the most potent reductant in cigarette smoke, on the melanin production in RPE cells. Induced pluripotent stem cell (iPS)-derived RPE and adult retinal pigment epithelial (ARPE-19) cells were cultured with HQ. Real-time reverse transcription polymerase chain reaction revealed that the expression of melanin-related genes decreased due to the addition of HQ for 1 day. Enzyme-linked immunosorbent immunoassay showed that the concentration of melanin significantly decreased due to the addition of HQ for 24 h. A suspension of RPE cells with HQ for 24 h was prepared, and the absorbance was measured. The absorbance decreased particularly under blue light, suggesting that blue light may reach the choroid and cause choroidal inflammation. Additionally, melanin levels significantly decreased due to the addition of HQ for 1 week. After blue light irradiation on the RPE with HQ for 1 week, the vascular endothelial growth factor in the medium was significantly higher in the HQ group than in the control group. HQ-induced changes in melanin production may be responsible for the uneven pigmentation of the RPE, and these changes may cause nAMD.
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Affiliation(s)
| | | | - Tetsuo Ueda
- Department of Ophthalmology, Nara Medical University, Kashihara 634-8521, Japan
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26
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Yang Z, Yang R, Zhu D, Wei D. [Promoting fucoxanthin accumulation in Phaeodactylum tricornutum by multiple nitrogen supplementation and blue light enhancement]. Sheng Wu Gong Cheng Xue Bao 2023; 39:4580-4592. [PMID: 38013185 DOI: 10.13345/j.cjb.230192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
The aim of this study was to promote fucoxanthin accumulation in Phaeodactylum tricornutum by photo-fermentation through optimizing the mode of multiple nitrogen supplementation and blue light enhancement. The results showed that the mixed nitrogen source (tryptone: urea=1:1, N mol/N mol; total nitrogen concentration at 0.02 mol/L) added to the culture system by six times was the best mode in shake flasks. Two-phase culture with light adjustment was then carried out in 5 L photo-fermenter with an enhanced blue light (R: G: B=67.1:16.7:16.3) in the second phase, leading to improved cell density (1.12×108 cells/mL), biomass productivity (330 mg/(d·L)), fucoxanthin content (19.62 mg/g), titer (69.71 mg/L) and productivity (6.97 mg/(d·L)). Compared with one-phase culture under red/blue (R: G: B=70.9:18.3:10.9) light and six-times nitrogen supplementation, the fucoxanthin content was significantly increased by 7.68% (P < 0.05) but the productivity did not change significantly (P > 0.05). Compared with one-phase culture under red/blue (R: G: B=70.9:18.3:10.9) light and one-time nitrogen supplementation, the content and productivity of fucoxanthin were significantly increased by 45.98% and 48.30% (P < 0.05), respectively. This study developed a two-phase culture mode with multiple nitrogen supplementation and blue light enhancement, which effectively promoted the accumulation of fucoxanthin and improved the efficiency of nitrogen source utilization, thus providing a new approach for fucoxanthin accumulation in P. tricornutum by photo-fermentation.
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Affiliation(s)
- Zexiong Yang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
| | - Runqing Yang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
| | - Defei Zhu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
| | - Dong Wei
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
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27
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Lazzarini R, Tartaglione MF, Ciarapica V, Piva F, Giulietti M, Fulgenzi G, Martelli M, Ledda C, Vitale E, Malavolta M, Santarelli L, Bracci M. Keratinocytes Exposed to Blue or Red Light: Proteomic Characterization Showed Cytoplasmic Thioredoxin Reductase 1 and Aldo-Keto Reductase Family 1 Member C3 Triggered Expression. Int J Mol Sci 2023; 24:16189. [PMID: 38003379 PMCID: PMC10671521 DOI: 10.3390/ijms242216189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/06/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023] Open
Abstract
Several cell-signaling mechanisms are activated by visible light radiation in human keratinocytes, but the key regulatory proteins involved in this specific cellular response have not yet been identified. Human keratinocytes (HaCaT cells) were exposed to blue or red light at low or high irradiance for 3 days in cycles of 12 h of light and 12 h of dark. The cell viability, apoptotic rate and cell cycle progression were analyzed in all experimental conditions. The proteomic profile, oxidative stress and mitochondrial morphology were additionally evaluated in the HaCaT cells following exposure to high-irradiance blue or red light. Low-irradiance blue or red light exposure did not show an alteration in the cell viability, cell death or cell cycle progression. High-irradiance blue or red light reduced the cell viability, induced cell death and cell cycle G2/M arrest, increased the reactive oxygen species (ROS) and altered the mitochondrial density and morphology. The proteomic profile revealed a pivotal role of Cytoplasmic thioredoxin reductase 1 (TXNRD1) and Aldo-keto reductase family 1 member C3 (AKR1C3) in the response of the HaCaT cells to high-irradiance blue or red light exposure. Blue or red light exposure affected the viability of keratinocytes, activating a specific oxidative stress response and inducing mitochondrial dysfunction. Our results can help to address the targets for the therapeutic use of light and to develop adequate preventive strategies for skin damage. This in vitro study supports further in vivo investigations of the biological effects of light on human keratinocytes.
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Affiliation(s)
- Raffaella Lazzarini
- Occupational Medicine, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60126 Ancona, Italy; (M.F.T.); (V.C.); (M.M.); (M.B.)
| | - Maria Fiorella Tartaglione
- Occupational Medicine, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60126 Ancona, Italy; (M.F.T.); (V.C.); (M.M.); (M.B.)
| | - Veronica Ciarapica
- Occupational Medicine, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60126 Ancona, Italy; (M.F.T.); (V.C.); (M.M.); (M.B.)
| | - Francesco Piva
- Department of Specialistic Clinical and Odontostomatological Sciences, Polytechnic University of Marche, 60131 Ancona, Italy; (F.P.)
| | - Matteo Giulietti
- Department of Specialistic Clinical and Odontostomatological Sciences, Polytechnic University of Marche, 60131 Ancona, Italy; (F.P.)
| | - Gianluca Fulgenzi
- Department of Clinical and Molecular Sciences Experimental Pathology, Polytechnic University of Marche, 60126 Ancona, Italy;
| | - Margherita Martelli
- Occupational Medicine, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60126 Ancona, Italy; (M.F.T.); (V.C.); (M.M.); (M.B.)
| | - Caterina Ledda
- Section of Occupational Medicine, Department of Clinical and Experimental Medicine, University of Catania, 95124 Catania, Italy;
| | - Ermanno Vitale
- Faculty of Medicine and Surgery, Kore University, 94100 Enna, Italy;
| | - Marco Malavolta
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, Scientific Technological Area, IRCCS INRCA, 60121 Ancona, Italy;
| | - Lory Santarelli
- Occupational Medicine, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60126 Ancona, Italy; (M.F.T.); (V.C.); (M.M.); (M.B.)
| | - Massimo Bracci
- Occupational Medicine, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60126 Ancona, Italy; (M.F.T.); (V.C.); (M.M.); (M.B.)
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28
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Frąszczak B, Kula-Maximenko M, Podsędek A, Sosnowska D, Unegbu KC, Spiżewski T. Morphological and Photosynthetic Parameters of Green and Red Kale Microgreens Cultivated under Different Light Spectra. Plants (Basel) 2023; 12:3800. [PMID: 38005697 PMCID: PMC10674929 DOI: 10.3390/plants12223800] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/22/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023]
Abstract
Microgreens are plants eaten at a very early stage of development, having a very high nutritional value. Among a large group of species, those from the Brassicaceae family, including kale, are very popularly grown as microgreens. Typically, microgreens are grown under controlled conditions under light-emitting diodes (LEDs). However, the effect of light on the quality of grown microgreens varies. The present study aimed to determine the effect of artificial white light with varying proportions of red (R) and blue (B) light on the morphological and photosynthetic parameters of kale microgreens with green and red leaves. The R:B ratios were for white light (W) 0.63, for red-enhanced white light (W + R) 0.75, and for white and blue light (W + B) 0.38 at 230 µmol m-2 s-1 PPFD. The addition of both blue and red light had a positive effect on the content of active compounds in the plants, including flavonoids and carotenoids. Red light had a stronger effect on the seedling area and the dry mass and relative chlorophyll content of red-leaved kale microgreens. Blue light, in turn, had a stronger effect on green kale, including dry mass. The W + B light combination negatively affected the chlorophyll content of both cultivars although the leaves were significantly thicker compared to cultivation under W + R light. In general, the cultivar with red leaves had less sensitivity to the photosynthetic apparatus to the spectrum used. The changes in PSII were much smaller in red kale compared to green kale. Too much red light caused a deterioration in the PSII vitality index in green kale. Red and green kale require an individual spectrum with different proportions of blue and red light at different growth stages to achieve plants with a large leaf area and high nutritional value.
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Affiliation(s)
- Barbara Frąszczak
- Department of Vegetable Crops, Poznań University of Life Sciences, Dąbrowskiego 159, 60-594 Poznań, Poland; (K.C.U.); (T.S.)
| | - Monika Kula-Maximenko
- The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, ul. Niezapominajek 21, 30-239 Kraków, Poland;
| | - Anna Podsędek
- Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 2/22, 90-537 Łódź, Poland; (A.P.); (D.S.)
| | - Dorota Sosnowska
- Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 2/22, 90-537 Łódź, Poland; (A.P.); (D.S.)
| | - Kingsley Chinazor Unegbu
- Department of Vegetable Crops, Poznań University of Life Sciences, Dąbrowskiego 159, 60-594 Poznań, Poland; (K.C.U.); (T.S.)
| | - Tomasz Spiżewski
- Department of Vegetable Crops, Poznań University of Life Sciences, Dąbrowskiego 159, 60-594 Poznań, Poland; (K.C.U.); (T.S.)
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Ricci E, Pittarello M. Blue light photobiomodulation for reactivation of healing in wounds not responding to standard therapy. J Wound Care 2023; 32:695-703. [PMID: 37907354 DOI: 10.12968/jowc.2023.32.11.695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
OBJECTIVE Blue light (410-430nm) has been suggested to be effective in the healing process of hard-to-heal wounds. The aim of this study was to test this hypothesis. METHOD This single-centre observational study assessed the efficacy of photobiomodulation with blue light (120 seconds at a distance of 4cm from the wound bed once a week for four weeks) in activating healing in patients with hard-to-heal skin lesions (mean duration 23.9 months) of the lower limb that had not responded to four weeks of standard treatment. RESULTS A total of 59 patients were assessed. Wounds were divided into groups according to aetiology: hard-to-heal venous wound (30.5%); hard-to-heal arterial and mixed wounds (16.9%); hard-to-heal inflammatory wound (22.0%); other hard-to-heal wounds (13.6%); and acute wound (16.9%). The mean reduction in wound area at the end of the four-week treatment period with blue light compared with baseline was 51.38% (p<0.001) across all wounds. Among subgroups, the best performance was obtained for hard-to-heal venous wounds, achieving a 63.36% (p<0.001) mean reduction in wound size, and acute wounds, achieving a mean reduction of 82.76% (p<0.001). The greatest mean change in wound bed score was seen at the end of the four-week treatment period with blue light, with an increase in the mean score from 8.6 at baseline to 12.8 at week four (77.2%; p<0.001). There was a clear decrease in pain during blue light treatment, achieving a reduction in the average numeric rating scale (NRS) from 4.3 at baseline to 1.8 at week 4 (53.23%; p <0.001). At week 4, the highest proportion of complete healing was seen in acute (100.0%) and venous wounds (83.3%). CONCLUSION Based on these results, photobiomodulation with blue light appears to reactivate the healing process in acute and hard-to-heal wounds that do not respond to standard treatment. Photobiomodulation with blue light treatment is easy to perform and safe, with no reported adverse events or side-effects.
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Affiliation(s)
- Elia Ricci
- Difficult Wound Healing Unit, St. Luca Clinic, Pecetto Torinese (Turin), Italy
| | - Monica Pittarello
- Difficult Wound Healing Unit, St. Luca Clinic, Pecetto Torinese (Turin), Italy
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Diniz LA, Ferreira LDAQ, Ribeiro RDB, de Jesus SLG, Anestino TA, Caldeira ASP, Souto GR, de Avelar GF, Amaral FA, Ferreira MVL, Madeira MFM, Braga FC, Diniz IMA. Exploring the association between a standardized extract of pequi peels (Caryocar brasiliense Cambess) and blue light as a photodynamic therapy for treating superficial wounds. Photochem Photobiol 2023. [PMID: 37909171 DOI: 10.1111/php.13874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/25/2023] [Accepted: 10/13/2023] [Indexed: 11/02/2023]
Abstract
Natural products derived from plants can be used as photosensitizers for antimicrobial photodynamic therapy (aPDT) combining key therapeutic strategies for tissue repair while controlling microorganisms' growth. We investigated a standardized extract of pequi peels (Caryocar brasiliense Cambess) as a brownish natural photosensitizer for aPDT using blue light. Three concentrations of the pequi extract (PE; 10, 30, or 90 μg/mL) were tested solely or associated with blue laser (445 nm, 100 mW, 138 J/cm2 , 6 J, 60 s). In vitro, we quantified reactive oxygen species (ROS), assessed skin keratinocytes (HaCat) viability and migration, and aPDT antimicrobial activity on Streptococcus or Staphylococcus strains. In vivo, we assessed wound closure for the most active concentration disclosed by the in vitro assay (30 μg/mL). Upon aPDT treatments, ROS were significantly increased in cell monolayers regardless of PE concentration. PE at low doses stimulates epithelial cells. Although PE stimulated cellular migration, aPDT was moderately cytotoxic to skin keratinocytes, particularly at the highest concentration. The antimicrobial activity was observed for PE at the lowest concentration (10 μg/mL) and mostly at PE 10 μg/mL and 30 μg/mL when used as aPDT photosensitizers. aPDT with PE 30 μg/mL presents antimicrobial activity without compromising the initial phases of skin repair.
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Affiliation(s)
- Luiza Alves Diniz
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- LASER Biotechnologies, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Luiza de Almeida Queiroz Ferreira
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- LASER Biotechnologies, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Rafaela de Brito Ribeiro
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Sarah Luiza Galvão de Jesus
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Thales Augusto Anestino
- Department of Microbiology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Alisson Samuel Portes Caldeira
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- Vice Directorate of Research, René Rachou Institute-Fiocruz Minas, Belo Horizonte, Brazil
| | - Giovanna Ribeiro Souto
- LASER Biotechnologies, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- Department of Dentistry, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil
| | - Gleide Fernandes de Avelar
- Department of Morphology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Flávio Almeida Amaral
- Department of Biochemistry and Immunology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Fernão Castro Braga
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ivana Márcia Alves Diniz
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- LASER Biotechnologies, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Olszewska MA, Dev Kumar G, Hur M, Diez-Gonzalez F. Inactivation of dried cells and biofilms of Listeria monocytogenes by exposure to blue light at different wavelengths and the influence of surface materials. Appl Environ Microbiol 2023; 89:e0114723. [PMID: 37846990 PMCID: PMC10617584 DOI: 10.1128/aem.01147-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 08/31/2023] [Indexed: 10/18/2023] Open
Abstract
Antimicrobial blue light (aBL) in the 400-470 nm wavelength range has been reported to kill multiple bacteria. This study assessed its potential for mitigating an important foodborne pathogen, Listeria monocytogenes (Lm), focusing on surface decontamination. Three wavelengths were tested, with gallic acid as a photosensitizing agent (Ps), against dried cells obtained from bacterial suspensions, and biofilms on stainless-steel (SS) coupons. Following aBL exposure, standard microbiological analysis of inoculated coupons was conducted to measure viability. Statistical analysis of variance was performed. Confocal laser scanning microscopy was used to observe the biofilm structures. Within 16 h of exposure at 405 nm, viable Lm dried cells and biofilms were reduced by approx. 3 log CFU/cm2 with doses of 2,672 J/cm2. Application of Ps resulted in an additional 1 log CFU/cm2 at 668 J/cm2, but its effect was not consistent. The highest dose (960 J/cm2) at 420 nm reduced viable counts on the biofilms by 1.9 log CFU/cm2. At 460 nm, after 800 J/cm2, biofilm counts were reduced by 1.6 log CFU/cm2. The effect of material composition on Lm viability was also investigated. Irradiation at 405 nm (668 J/cm2) of cells dried on polystyrene resulted in one of the largest viability reductions (4.0 log CFU/cm2), followed by high-density polyethylene (3.5 log CFU/cm2). Increasing the dose to 4,008 J/cm2 from 405 nm (24 h), improved its efficacy only on SS and polyvinyl chloride. Biofilm micrographs displayed a decrease in biofilm biomass due to the removal of biofilm portions from the surface and a shift from live to dead cells suggesting damage to biofilm cell membranes. These results suggest that aBL is a potential intervention to treat Lm contamination on typical material surfaces used in food production.IMPORTANCECurrent cleaning and sanitation programs are often not capable of controlling pathogen biofilms on equipment surfaces, which transmit the bacteria to ready-to-eat foods. The presence of native plant microbiota and organic matter can protect pathogenic bacteria by reducing the efficacy of sanitizers as well as promoting biofilm formation. Post-operation washing and sanitizing of produce contact surfaces might not be adequate in eliminating the presence of pathogens and commensal bacteria. The use of a dynamic and harmless light technology during downtime and close of operation could serve as a useful tool in preventing biofilm formation and persistence. Antimicrobial blue light (aBL) technology has been explored for hospital disinfection with very promising results, but its application to control foodborne pathogens remains relatively limited. The use of aBL could be a complementary strategy to inactivate surfaces in restaurant or supermarket deli settings.
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Affiliation(s)
- Magdalena A. Olszewska
- Center for Food Safety, University of Georgia, Griffin, Georgia, USA
- Department of Industrial and Food Microbiology, The Faculty of Food Science, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | | | - Minji Hur
- Center for Food Safety, University of Georgia, Griffin, Georgia, USA
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Qu GP, Jiang B, Lin C. The dual-action mechanism of Arabidopsis cryptochromes. J Integr Plant Biol 2023. [PMID: 37902426 DOI: 10.1111/jipb.13578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 10/31/2023]
Abstract
Photoreceptor cryptochromes (CRYs) mediate blue-light regulation of plant growth and development. It has been reported that Arabidopsis CRY1and CRY2 function by physically interacting with at least 84 proteins, including transcription factors or co-factors, chromatin regulators, splicing factors, messenger RNA methyltransferases, DNA repair proteins, E3 ubiquitin ligases, protein kinases and so on. Of these 84 proteins, 47 have been reported to exhibit altered binding affinity to CRYs in response to blue light, and 41 have been shown to exhibit condensation to CRY photobodies. The blue light-regulated composition or condensation of CRY complexes results in changes of gene expression and developmental programs. In this mini-review, we analyzed recent studies of the photoregulatory mechanisms of Arabidopsis CRY complexes and proposed the dual mechanisms of action, including the "Lock-and-Key" and the "Liquid-Liquid Phase Separation (LLPS)" mechanisms. The dual CRY action mechanisms explain, at least partially, the structural diversity of CRY-interacting proteins and the functional diversity of the CRY photoreceptors.
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Affiliation(s)
- Gao-Ping Qu
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Bochen Jiang
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Department of Chemistry, Department of Biochemistry and Molecular Biology, Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, 60637, USA
| | - Chentao Lin
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
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Gao J, Dou Y, Wang X, Zhang D, Wei M, Li Y. Transcriptome analysis reveals the mechanism for blue-light-induced biosynthesis of delphinidin derivatives in harvested purple pepper fruit. Front Plant Sci 2023; 14:1289120. [PMID: 37965026 PMCID: PMC10640979 DOI: 10.3389/fpls.2023.1289120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/09/2023] [Indexed: 11/16/2023]
Abstract
Anthocyanins are the main pigments that affect the color and quality of purple-fruited sweet pepper (Capsicum annuum). Our previous study indicated that blue light can induce anthocyanin accumulation in purple pepper. In view of its underlying mechanism that is unclear, here, anthocyanin content was determined, and transcriptome analysis was performed on pepper fruits harvested from different light treatments. As a result, among the identified anthocyanin metabolites, the levels of delphinidin (Dp) glycosides, including Dp-3-O-rhamnoside, Dp-3-O-rutinoside, and Dp-3-O-glucoside, were highly accumulated in blue-light-treated fruit, which are mainly responsible for the appearance color of purple pepper. Correlation between anthocyanin content and transcriptomic analysis indicated a total of 1,619 upregulated genes were found, of which six structural and 12 transcription factor (TF) genes were involved in the anthocyanin biosynthetic pathway. Structural gene, for instance, CaUFGT as well as TFs such as CaMYC2-like and CaERF113, which were highly expressed under blue light and presented similar expression patterns consistent with Dp glycoside accumulation, may be candidate genes for anthocyanin synthesis in response to blue-light signal.
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Affiliation(s)
- Jinhui Gao
- College of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an, Shandong, China
| | - Yuwei Dou
- College of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an, Shandong, China
| | - Xiaotong Wang
- College of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an, Shandong, China
| | - Dalong Zhang
- College of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an, Shandong, China
- Scientific Observing and Experimental Station of Environment Controlled Agricultural Engineering in Huang-Huai-Hai Region, Ministry of Agriculture, Tai’an, Shandong, China
| | - Min Wei
- College of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an, Shandong, China
- Scientific Observing and Experimental Station of Environment Controlled Agricultural Engineering in Huang-Huai-Hai Region, Ministry of Agriculture, Tai’an, Shandong, China
| | - Yan Li
- College of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an, Shandong, China
- Scientific Observing and Experimental Station of Environment Controlled Agricultural Engineering in Huang-Huai-Hai Region, Ministry of Agriculture, Tai’an, Shandong, China
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Bernardy C, Malley J. Impacts of Surface Characteristics and Dew Point on the Blue-Light (BL 405) Inactivation of Viruses. Microorganisms 2023; 11:2638. [PMID: 38004651 PMCID: PMC10673487 DOI: 10.3390/microorganisms11112638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
The increased prevalence of multidrug-resistant organisms (MDROs), healthcare associated infections (HAIs), and the recent COVID-19 pandemic has caused the photoinactivation industry to explore alternative wavelengths. Blue light (BL405) has gained significant interest as it is much less harmful to the skin and eyes than traditional germicidal wavelengths; therefore, in theory, it can be used continuously with human exposure. At present, the viricidal effects of BL405 are largely unknown as the literature predominately addresses bacterial disinfection performed with this wavelength. This work provides novel findings to the industry, reporting on the virucidal effects of BL405 on surfaces. This research utilizes three surfaces: ceramic, PTFE, and stainless steel. The efficacy of BL405 inactivation varied by surface type, which was due to surface characteristics, such as the contact angle, porosity, zeta potential, and reflectivity. Additionally, the effect of the dew point on BL405 inactivation efficacy was determined. This research is the first to study the effects of the dew point on the virucidal effectiveness of BL405 surface inactivation. The effects of the dew point were significant for all surfaces and the control experiments. The high-dew-point conditions (18 °C) yielded higher levels of BL405 inactivation and viral degradation for the experiments and controls, respectively.
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Affiliation(s)
| | - James Malley
- Department of Civil and Environmental Engineering, College of Engineering & Physical Sciences, University of New Hampshire, Durham, NH 03824, USA;
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Neo JRE, Teo CWL, Ung YW, Yap WN. Tocotrienol-Rich Fraction Attenuates Blue Light-Induced Oxidative Stress and Melanogenesis in B16-F1 Melanocytes via Anti-Oxidative and Anti-Tyrosinase Properties. Int J Mol Sci 2023; 24:15373. [PMID: 37895053 PMCID: PMC10607579 DOI: 10.3390/ijms242015373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/14/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
Our skin is constantly exposed to blue light (BL), which is abundant in sunlight and emitted by digital devices. Prolonged exposure to BL can lead to oxidative stress-induced damages and skin hyperpigmentation. For this study, we used a cell line-based model to examine the protective effects of tocotrienol-rich fraction (TRF) on BL-induced oxidative stress and hyperpigmentation in B16-F1 melanocytes. Alpha-tocopherol (αTP) was used as a comparator. Molecular assays such as cell viability assay, flow cytometry, western blotting, fluorescence imaging, melanin and tyrosinase analysis were performed. Our results showed that TRF effectively suppressed the formation of reactive oxygen species and preserved the mitochondrial membrane potential. Additionally, TRF exhibited anti-apoptotic properties by reducing the activation of the p38 mitogen-activated protein kinase molecule and downregulating the expression of cleaved caspase-3. Moreover, TRF modulated tyrosinase activity, resulting in a lowered rate of melanogenesis and reduced melanin production. In contrast, αTP did not exhibit significant protective effects against skin damages and pigmentation in BL-induced B16-F1 cells. Therefore, this study indicates that TRF may offer superior protective effects over αTP against the effects of BL on melanocytes. These findings demonstrate the potential of TRF as a protective natural ingredient that acts against BL-induced skin damages and hyperpigmentation via its anti-oxidative and anti-melanogenic properties.
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Affiliation(s)
- Juvenia Rui En Neo
- Research and Development Department, Davos Life Science, 3 Biopolis Drive, #04-19 Synapse, Singapore 138623, Singapore; (J.R.E.N.)
| | - Cheryl Wei Ling Teo
- Research and Development Department, Davos Life Science, 3 Biopolis Drive, #04-19 Synapse, Singapore 138623, Singapore; (J.R.E.N.)
| | - Yee Wei Ung
- Research and Development Department, KL-Kepong Oleomas (KLK Oleo), Level 8, Menara KLK, No 1, Jalan PJU 7/6, Mutiara Damansara, Petaling Jaya 47810, Malaysia;
| | - Wei Ney Yap
- Research and Development Department, Davos Life Science, 3 Biopolis Drive, #04-19 Synapse, Singapore 138623, Singapore; (J.R.E.N.)
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Wu F, Dang B, Hu L, Zhu S, Liu Z, Cao X, Li Z, Wang C, Lin C. Lycium barbarum polysaccharide inhibits blue-light-induced skin oxidative damage with the involvement of mitophagy. Photochem Photobiol 2023. [PMID: 37814779 DOI: 10.1111/php.13863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/21/2023] [Accepted: 09/24/2023] [Indexed: 10/11/2023]
Abstract
Although blue light can damage the skin to a certain extent, the pathogenesis of its damage remains still unclear. The available evidence suggests that oxidative stress may be the main cause of its damage. Lycium barbarum polysaccharide (LBP) has antioxidative effects in a variety of cells. In this paper, we investigated the protective role of LBP and its mechanism of action related to mitophagy in blue-light-damaged skin cells. The findings indicated that in HaCaT cells and mouse skin, LBP pretreatment was effective in reducing blue-light-induced apoptosis and ameliorating the elevated level of cellular autophagy/mitophagy caused by excessive blue light exposure. The markers reactive oxygen species (ROS), superoxide dismutase (SOD), and malondialdehyde (MDA) were used to assess oxidative stress. LBP could effectively inhibit blue-light-induced oxidative stress. It was also found that blue light exposure caused mitochondrial dysfunction in HaCaT cells, including increased intracellular calcium ion levels and decreased mitochondrial membrane potential. LBP pretreatment significantly relieved mitochondrial dysfunction in HaCaT cells. These findings imply that LBP pretreatment protects skin cells from damage induced by blue light irradiation and that mitophagy may be a significant factor in skin photodamage.
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Affiliation(s)
- Fen Wu
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Bingrong Dang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China
| | - Liming Hu
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Sen Zhu
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Zuohao Liu
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Xinhui Cao
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Zhen Li
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Chunming Wang
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Changjun Lin
- School of Life Sciences, Lanzhou University, Lanzhou, China
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Qiu Z, Wang S, Zhao J, Cui L, Wang X, Cai N, Li H, Ren S, Li T, Shu L. Synthesis and structural characteristics analysis of melanin pigments induced by blue light in Morchella sextelata. Front Microbiol 2023; 14:1276457. [PMID: 37840742 PMCID: PMC10573313 DOI: 10.3389/fmicb.2023.1276457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 09/18/2023] [Indexed: 10/17/2023] Open
Abstract
Morchella sextelata, a highly sought-after edible mushroom worldwide, is evaluated based on its cap color as an essential commercial property indicator. In the present study, the effects of blue light on cap pigmentation in M. sextelata, as well as the synthesis and structural characteristics of melanin pigments within the cap were examined. The results showed that an increase in the proportion of blue light within the lighting environment promoted melanin synthesis and melanization of the cap. Transmission and scanning electron microscopy revealed the localization of melanin within the mycelium and its ultrastructural characteristics. The UV-visible analysis demonstrated that melanin exhibited a maximum absorption peak at 220 nm and possessed high alkaline solubility as well as acid precipitability. The structural characteristics of melanin were analyzed using FTIR, NMR, HPLC, and elemental analysis, which confirmed the presence of eumelanin, pheomelanin, and allomelanin in both brown and black caps. Furthermore, blue light can stimulate the synthesis of both eumelanin and pheomelanin. The obtained results can serve as the foundation for comprehending the mechanism by which light regulates color formation in mushrooms.
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Affiliation(s)
- Zhiheng Qiu
- Modern Protected Horticulture Engineering & Technology Center, College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
| | - Shuang Wang
- Modern Protected Horticulture Engineering & Technology Center, College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
| | - Jiazhi Zhao
- Modern Protected Horticulture Engineering & Technology Center, College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
| | - Lingxiu Cui
- Modern Protected Horticulture Engineering & Technology Center, College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
| | - Xinyi Wang
- Modern Protected Horticulture Engineering & Technology Center, College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
| | - Nuo Cai
- Modern Protected Horticulture Engineering & Technology Center, College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
| | - Hongpeng Li
- Modern Protected Horticulture Engineering & Technology Center, College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
| | - Shuhua Ren
- Modern Protected Horticulture Engineering & Technology Center, College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
| | - Tianlai Li
- Modern Protected Horticulture Engineering & Technology Center, College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
| | - Lili Shu
- Modern Protected Horticulture Engineering & Technology Center, College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
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Chen C, Chen J, Wu G, Li L, Hu Z, Li X. A Blue Light-Responsive Strong Synthetic Promoter Based on Rational Design in Chlamydomonas reinhardtii. Int J Mol Sci 2023; 24:14596. [PMID: 37834043 PMCID: PMC10572394 DOI: 10.3390/ijms241914596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/13/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023] Open
Abstract
Chlamydomonas reinhardtii (C. reinhardtii) is a single-cell green alga that can be easily genetically manipulated. With its favorable characteristics of rapid growth, low cost, non-toxicity, and the ability for post-translational protein modification, C. reinhardtii has emerged as an attractive option for the biosynthesis of various valuable products. To enhance the expression level of exogenous genes and overcome the silencing of foreign genes by C. reinhardtii, synthetic promoters such as the chimeric promoter AR have been constructed and evaluated. In this study, a synthetic promoter GA was constructed by hybridizing core fragments from the natural promoters of the acyl carrier protein gene (ACP2) and the glutamate dehydrogenase gene (GDH2). The GA promoter exhibited a significant increase (7 times) in expressing GUS, over the AR promoter as positive control. The GA promoter also displayed a strong responsiveness to blue light (BL), where the GUS expression was doubled compared to the white light (WL) condition. The ability of the GA promoter was further tested in the expression of another exogenous cadA gene, responsible for catalyzing the decarboxylation of lysine to produce cadaverine. The cadaverine yield driven by the GA promoter was increased by 1-2 times under WL and 2-3 times under BL as compared to the AR promoter. This study obtained, for the first time, a blue light-responsive GDH2 minimal fragment in C. reinhardtii, which delivered a doubling effect under BL when used alone or in hybrid. Together with the strong GA synthetic promoter, this study offered useful tools of synthetic biology to the algal biotechnology field.
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Affiliation(s)
| | | | | | | | - Zhangli Hu
- Guangdong Technology Research Center for Marine Algal Bioengineering, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Xiaozheng Li
- Guangdong Technology Research Center for Marine Algal Bioengineering, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
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Bernardo EL, Sales CRG, Cubas LA, Vath RL, Kromdijk J. A comparison of stomatal conductance responses to blue and red light between C3 and C4 photosynthetic species in three phylogenetically-controlled experiments. Front Plant Sci 2023; 14:1253976. [PMID: 37828928 PMCID: PMC10565490 DOI: 10.3389/fpls.2023.1253976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 09/11/2023] [Indexed: 10/14/2023]
Abstract
Introduction C4 photosynthesis is an adaptation that has independently evolved at least 66 times in angiosperms. C4 plants, unlike their C3 ancestral, have a carbon concentrating mechanism which suppresses photorespiration, often resulting in faster photosynthetic rates, higher yields, and enhanced water use efficiency. Moreover, the presence of C4 photosynthesis greatly alters the relation between CO2 assimilation and stomatal conductance. Previous papers have suggested that the adjustment involves a decrease in stomatal density. Here, we tested if C4 species also have differing stomatal responses to environmental cues, to accommodate the modified CO2 assimilation patterns compared to C3 species. Methods To test this hypothesis, stomatal responses to blue and red-light were analysed in three phylogenetically linked pairs of C3 and C4 species from the Cleomaceae (Gynandropsis and Tarenaya), Flaveria, and Alloteropsis, that use either C3 or C4 photosynthesis. Results The results showed strongly decreased stomatal sensitivity to blue light in C4 dicots, compared to their C3 counterparts, which exhibited significant blue light responses. In contrast, in C3 and C4 subspecies of the monocot A. semialata, the blue light response was observed regardless of photosynthetic type. Further, the quantitative red-light response varied across species, but the presence or absence of a significant stomatal red-light response was not directly associated with differences in photosynthetic pathway. Interestingly, stomatal density and morphology patterns observed across the three comparisons were also not consistent with patterns commonly asserted for C3 and C4 species. Discussion The strongly diminished blue-light sensitivity of stomatal responses in C4 species across two of the comparisons suggests a common C4 feature that may have functional implications. Altogether, the strong prevalence of species-specific effects clearly emphasizes the importance of phylogenetic controls in comparisons between C3 and C4 photosynthetic pathways.
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Affiliation(s)
- Emmanuel L. Bernardo
- Department of Plant Sciences, University of Cambridge, Cambridge, United Kingdom
- Institute of Crop Science, College of Agriculture and Food Science, University of the Philippines Los Baños, College, Los Baños, Laguna, Philippines
| | | | - Lucía Arce Cubas
- Department of Plant Sciences, University of Cambridge, Cambridge, United Kingdom
| | - Richard L. Vath
- Department of Plant Sciences, University of Cambridge, Cambridge, United Kingdom
| | - Johannes Kromdijk
- Department of Plant Sciences, University of Cambridge, Cambridge, United Kingdom
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
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40
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Shi YG, Chen WX, Zheng MZ, Zhao YX, Wang YR, Chu YH, Du ST, Shi ZY, Gu Q, Chen JS. Ultraefficient OG-Mediated Photodynamic Inactivation Mechanism for Ablation of Bacteria and Biofilms in Water Augmented by Potassium Iodide under Blue Light Irradiation. J Agric Food Chem 2023; 71:13672-13687. [PMID: 37671932 DOI: 10.1021/acs.jafc.3c03182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
While photodynamic inactivation (PDI) has emerged as a novel sterilization strategy for drinking water treatment that recently attracted tremendous attention, its efficiency needs to be further improved. In this study, we aimed to clarify the ultraefficient mechanism by which potassium iodide (KI) potentiates octyl gallate (OG)-mediated PDI against bacteria and biofilms in water. When OG (0.15 mM) and bacteria were exposed to blue light (BL, 420 nm, 210 mW/cm2), complete sterilization (>7.5 Log cfu/mL of killing) was achieved by the addition of KI (250 mM) within only 5 min (63.9 J/cm2). In addition, at lower doses of OG (0.1 mM) with KI (100 mM), the biofilm was completely eradicated within 10 min (127.8 J/cm2). The KI-potentiated mechanism involves in situ rapid photogeneration of a multitude of reactive oxygen species, especially hydroxyl radicals (•OH), reactive iodine species, and new photocytocidal substances (quinone) by multiple photochemical pathways, which led to the destruction of cell membranes and membrane proteins, the cleavage of genomic DNA and extracellular DNA within biofilms, and the degradation of QS signaling molecules. This multitarget synergistic strategy provided new insights into the development of an environmentally friendly, safe, and ultraefficient photodynamic drinking water sterilization technology.
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Affiliation(s)
- Yu-Gang Shi
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310035 Zhejiang, China
- Key Laboratory for Food Microbial Technology of Zhejiang Province, Zhejiang Gongshang University, Hangzhou 310035 Zhejiang, China
| | - Wen-Xuan Chen
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310035 Zhejiang, China
| | - Mei-Zhi Zheng
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310035 Zhejiang, China
| | - Yue-Xin Zhao
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310035 Zhejiang, China
| | - Yi-Ran Wang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310035 Zhejiang, China
| | - Yen-Ho Chu
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chiayi 62102 Taiwan, China
| | - Shao-Ting Du
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou 310015, China
| | - Ze-Yu Shi
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou 310015, China
| | - Qing Gu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310035 Zhejiang, China
- Key Laboratory for Food Microbial Technology of Zhejiang Province, Zhejiang Gongshang University, Hangzhou 310035 Zhejiang, China
| | - Jian-She Chen
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310035 Zhejiang, China
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41
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Yuan Y, Huang Q, Darcel C. Blue-Light Driven Iron-Catalyzed Oxy-phosphinylation of Activated Alkenes for β-Ketophosphine Oxide Synthesis. Chemistry 2023:e202302358. [PMID: 37681747 DOI: 10.1002/chem.202302358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/09/2023]
Abstract
We have developed an original blue-light mediated iron-catalyzed oxy-phosphinylation of activated alkenes by secondary phosphine oxides under air at room temperature. Various β-ketophosphine oxides were then obtained in 43-97 % isolated yields. Control experiments revealed that radical process is involved in the mechanism.
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Affiliation(s)
- Yumeng Yuan
- CNRS, ISCR UMR 6226, Univ. Rennes, F 35000, Rennes, France
- College of Chemistry & Materials Science, Fujian Normal University, 350007, Fuzhou, P. R. China
| | - Qiufeng Huang
- College of Chemistry & Materials Science, Fujian Normal University, 350007, Fuzhou, P. R. China
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42
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Tang H, Li X, Liu X, Xu Y, Shen J. Rutin intake mitigates the injury of blue light irradiation by altering aging rates of mortality in Drosophila model. Photochem Photobiol 2023. [PMID: 37665025 DOI: 10.1111/php.13848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/27/2023] [Accepted: 08/11/2023] [Indexed: 09/05/2023]
Abstract
Blue light is known as one of the harmful light pollution that has complex effects on organisms. The massive use of LED lights in cities has greatly increased the frequency of human exposure to blue light, and therefore the hazards of blue light are receiving widespread attention. In our study, Drosophila was used as the model organism to explore the ability of the flavonoid rutin to resist blue light damage under the intensity of 3000 Lux. Siler model analysis was performed. Our results showed sex-specific pattern of rutin as an effective antioxidant. Rutin could help female flies to reduce the initial adult mortality and male flies to slow the increase of adult mortality under blue light irradiation, thus prolonging their average lifespan. Furthermore, after the intake of rutin, the locomotor activity of Drosophila under blue light irradiation was significantly increased, and the total sleep time was significantly decreased. In summary, our results provide preliminary support for exploring the mechanism of rutin against blue light damage.
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Affiliation(s)
- Hao Tang
- College of Artificial Intelligence, Hangzhou Dianzi University, Hangzhou, China
| | - Xiangyu Li
- College of Artificial Intelligence, Hangzhou Dianzi University, Hangzhou, China
| | - Xingyou Liu
- College of Artificial Intelligence, Hangzhou Dianzi University, Hangzhou, China
| | - Yifan Xu
- College of Artificial Intelligence, Hangzhou Dianzi University, Hangzhou, China
| | - Jie Shen
- College of Artificial Intelligence, Hangzhou Dianzi University, Hangzhou, China
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Cohen L, Brodsky MA, Zubair R, Kohli I, Hamzavi IH, Sadeghpour M. Cutaneous interaction with visible light: What do we know? J Am Acad Dermatol 2023; 89:560-568. [PMID: 32289393 DOI: 10.1016/j.jaad.2020.03.115] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 03/25/2020] [Accepted: 03/31/2020] [Indexed: 10/24/2022]
Abstract
Visible light has been used therapeutically in dermatology for years for a variety of cosmetic and medical indications, including skin rejuvenation and the treatment of inflammatory and neoplastic conditions, among others. Until recently, visible light was thought to be relatively inert compared to its spectral neighbors, ultraviolet and infrared radiation. However, recent literature has described the ability of visible light to cause erythema in light skin and pigmentary changes in individuals with darker skin types. Concern surrounding its potentially damaging cutaneous effects has been raised in both the medical community and social media outlets. In this article, we provide an evidenced-based review describing what is currently known about visible light, focusing on its role in dermatologic diseases including disorders of hyperpigmentation such as melasma and postinflammatory hyperpigmentation.
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Affiliation(s)
- Leah Cohen
- Department of Dermatology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | | | - Raheel Zubair
- Department of Dermatology, Henry Ford Hospital, Detroit, Michigan
| | - Indermeet Kohli
- Department of Dermatology, Henry Ford Hospital, Detroit, Michigan
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Guo Y, Gong C, Cao B, Di T, Xu X, Dong J, Zhao K, Gao K, Su N. Blue Light Enhances Health-Promoting Sulforaphane Accumulation in Broccoli (Brassica oleracea var. italica) Sprouts through Inhibiting Salicylic Acid Synthesis. Plants (Basel) 2023; 12:3151. [PMID: 37687397 PMCID: PMC10490093 DOI: 10.3390/plants12173151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/28/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023]
Abstract
As a vegetable with high nutritional value, broccoli (Brassica oleracea var. italica) is rich in vitamins, antioxidants and anti-cancer compounds. Glucosinolates (GLs) are one of the important functional components widely found in cruciferous vegetables, and their hydrolysate sulforaphane (SFN) plays a key function in the anti-cancer process. Herein, we revealed that blue light significantly induced the SFN content in broccoli sprouts, and salicylic acid (SA) was involved in this process. We investigated the molecular mechanisms of SFN accumulation with blue light treatment in broccoli sprouts and the relationship between SFN and SA. The results showed that the SFN accumulation in broccoli sprouts was significantly increased under blue light illumination, and the expression of SFN synthesis-related genes was particularly up-regulated by SA under blue light. Moreover, blue light considerably decreased the SA content compared with white light, and this decrease was more suppressed by paclobutrazol (Pac, an inhibitor of SA synthesis). In addition, the transcript level of SFN synthesis-related genes and the activity of myrosinase (MYR) paralleled the trend of SFN accumulation under blue light treatment. Overall, we concluded that SA participates in the SFN accumulation in broccoli sprouts under blue light.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Nana Su
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; (Y.G.); (C.G.); (B.C.); (T.D.); (X.X.); (J.D.); (K.Z.); (K.G.)
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45
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Jiang H, Qin H, Sun M, Lin S, Yang J, Liu M. Effect of blue light on the cell viability of A549 lung cancer cells and investigations into its possible mechanism. J Biophotonics 2023; 16:e202300047. [PMID: 37265005 DOI: 10.1002/jbio.202300047] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 04/24/2023] [Accepted: 05/16/2023] [Indexed: 06/03/2023]
Abstract
Blue light has attracted extensive attention as a new potential cancer therapy. Recent studies have indicated that blue light has a significant inhibition effect on A459 cells. However, the effect of light parameters on the treatment of A549 cells and the mechanism of how blue light made the effect was still unclear. This study aimed to investigate A549 cells responses to blue light with varying irradiance and dose-dense, and tried to find out the mechanism of the effects blue light made. The results suggested that the responses of A549 cells to blue light with different irradiance and dose-dense were different and the decrease of cell viability reached saturation when the irradiance reached 3 mW/cm2 and the dose-dense reached 3.6 J/cm2 . It was assumed that blue light suppressed PI3K/AKT pathway and promoted the expression of JNK and p53 to affect the proliferation of A549 cells.
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Affiliation(s)
- Hui Jiang
- Academy for Engineering and Technology, Fudan University, Shanghai, China
- Zhongshan Fudan Joint Innovation Center, Zhongshan, China
| | - Haokuan Qin
- Academy for Engineering and Technology, Fudan University, Shanghai, China
| | - Miao Sun
- School of Information Science and Technology, Fudan University, Shanghai, China
| | - Shangfei Lin
- Academy for Engineering and Technology, Fudan University, Shanghai, China
- Zhongshan Fudan Joint Innovation Center, Zhongshan, China
| | - Jiali Yang
- Zhongshan Fudan Joint Innovation Center, Zhongshan, China
- School of Information Science and Technology, Fudan University, Shanghai, China
| | - Muqing Liu
- Academy for Engineering and Technology, Fudan University, Shanghai, China
- Zhongshan Fudan Joint Innovation Center, Zhongshan, China
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Hiramoto K, Kubo S, Tsuji K, Sugiyama D, Hamano H. Induction of Skin Cancer by Long-Term Blue Light Irradiation. Biomedicines 2023; 11:2321. [PMID: 37626816 PMCID: PMC10452187 DOI: 10.3390/biomedicines11082321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/19/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
Presently, people are not only exposed to sunlight but also to a large amount of blue light from personal computers and smartphones. This blue light has various effects on the living body. However, its effect on the induction of skin cancer is unknown. In this study, we investigated the induction of skin cancer by long-term blue light irradiation. Hairless mice were irradiated with blue light (LED; peak emission 479 nm) every day for one year, and a control was irradiated with white light (LED), green light (LED; peak emission 538 nm), and red light (LED; peak emission 629 nm) for one year, respectively. Skin cancer was induced only in the mice exposed to blue light. Long-term blue light irradiation also increased the migration of neutrophils and macrophages involved in carcinogenesis in the skin. In neutrophils, an increased expression of citH3 and PAD4 was observed, suggesting the possibility of NETosis. Conversely, in macrophages, inflammatory macrophages (type 1 macrophages) increased and anti-inflammatory macrophages (type 2 macrophages) decreased due to continuous blue light irradiation. These findings suggest that long-term continuous irradiation with blue light induces neutrophil NETosis and an increase in type 1 macrophages, resulting in skin cancer.
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Affiliation(s)
- Keiichi Hiramoto
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Sayaka Kubo
- Research Department, Daiichi Sankyo Healthcare Co., Ltd., Chuo-ku, Tokyo 140-8170, Japan; (S.K.); (K.T.); (D.S.); (H.H.)
| | - Keiko Tsuji
- Research Department, Daiichi Sankyo Healthcare Co., Ltd., Chuo-ku, Tokyo 140-8170, Japan; (S.K.); (K.T.); (D.S.); (H.H.)
| | - Daijiro Sugiyama
- Research Department, Daiichi Sankyo Healthcare Co., Ltd., Chuo-ku, Tokyo 140-8170, Japan; (S.K.); (K.T.); (D.S.); (H.H.)
| | - Hideo Hamano
- Research Department, Daiichi Sankyo Healthcare Co., Ltd., Chuo-ku, Tokyo 140-8170, Japan; (S.K.); (K.T.); (D.S.); (H.H.)
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Minor M, Sabillón L. Effectiveness of Ultra-High Irradiance Blue Light-Emitting Diodes in Inactivating Escherichia coli O157:H7 on Dry Stainless Steel and Cast-Iron Surfaces. Foods 2023; 12:3072. [PMID: 37628070 PMCID: PMC10453762 DOI: 10.3390/foods12163072] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 08/09/2023] [Accepted: 08/13/2023] [Indexed: 08/27/2023] Open
Abstract
The use of blue light-emitting diodes (LEDs) is emerging as a promising dry decontamination method. In the present study, LEDs emitting ultra-high irradiance (UHI) density at 405 nm (842 mW/cm2) and 460 nm (615 mW/cm2) were used to deliver high-intensity photoinactivation treatments ranging from 221 to 1107 J/cm2. The efficacy of these treatments to inactivate E. coli O157:H7 dry cells was evaluated on clean and soiled stainless steel and cast-iron surfaces. On clean metal surfaces, the 405 and 460 nm LED treatment with a 221 J/cm2 dose resulted in E. coli reductions ranging from 2.0 to 4.1 log CFU/cm2. Increasing the treatment energy dose to 665 J/cm2 caused further significant reductions (>8 log CFU/cm2) in the E. coli population. LED treatments triggered a significant production of intracellular reactive oxygen species (ROS) in E. coli cells, as well as a significant temperature increase on metal surfaces. In the presence of organic matter, intracellular ROS generation in E. coli cells dropped significantly, and treatments with higher energy doses (>700 J/cm2) were required to uphold antimicrobial effectiveness. The mechanism of the bactericidal effect of UHI blue LED treatments is likely to be a combination of photothermal and photochemical effects. This study showed that LEDs emitting monochromatic blue light at UHI levels may serve as a viable and time-effective method for surface decontamination in dry food processing environments.
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Affiliation(s)
- Martha Minor
- Department of Family & Consumer Sciences, New Mexico State University, Las Cruces, NM 88003, USA;
| | - Luis Sabillón
- Department of Family & Consumer Sciences, New Mexico State University, Las Cruces, NM 88003, USA;
- Center of Excellence in Sustainable Food and Agricultural Systems, New Mexico State University, Las Cruces, NM 88003, USA
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Song Y, Liu W, Wang Z, He S, Jia W, Shen Y, Sun Y, Xu Y, Wang H, Shang W. Effect of Different Monochromatic LEDs on the Environmental Adaptability of Spathiphyllum floribundum and Chrysanthemum morifolium. Plants (Basel) 2023; 12:2964. [PMID: 37631175 PMCID: PMC10459178 DOI: 10.3390/plants12162964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/13/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023]
Abstract
Light-emitting diodes (LEDs) can be programmed to provide specialized light sources and spectra for plant growth. UV-A (397.6 nm), blue (460.6 nm), green (520.7 nm), and red (661.9 nm) LED light sources were used to study the effects of different monochromatic lights on the growth, antioxidant system, and photosynthetic characteristics of Spathiphyllum floribundum 'Tian Jiao' (a shade-loving species) and Chrysanthemum morifolium 'Huang Xiu Qiu' (a sun-loving species). This research revealed that green and blue light could enhance the morphological indicators, Chl a/b, photosynthetic electron transfer chain performance, and photosystem activity of S. floribundum, blue and red light could enhance the solution protein, Chl a, and photosynthetic electron transfer chain performance of C. morifolium, red and UV-A light viewed the highest SOD and CAT activities of S. floribundum (275.56 U·min·g-1; 148.33 U·min·g-1) and C. morifolium (587.03 U·min·g-1; 98.33 U·min·g-1), respectively. Blue and green light were more suitable for the growth and development of the shade-loving plant S. floribundum, while red and blue light were more suitable for the sun-loving plant C. morifolium. UV-A light could be used for their stress research. The research revealed the different adaptation mechanism of different plants to light environmental conditions.
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Affiliation(s)
- Yinglong Song
- Zhengzhou Key Laboratory for Research and Development of Regional Plants, College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou 450002, China; (Y.S.); (W.L.); (Z.W.); (Y.S.); (Y.S.); (Y.X.); (H.W.)
| | - Weichao Liu
- Zhengzhou Key Laboratory for Research and Development of Regional Plants, College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou 450002, China; (Y.S.); (W.L.); (Z.W.); (Y.S.); (Y.S.); (Y.X.); (H.W.)
| | - Zheng Wang
- Zhengzhou Key Laboratory for Research and Development of Regional Plants, College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou 450002, China; (Y.S.); (W.L.); (Z.W.); (Y.S.); (Y.S.); (Y.X.); (H.W.)
| | - Songlin He
- Zhengzhou Key Laboratory for Research and Development of Regional Plants, College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou 450002, China; (Y.S.); (W.L.); (Z.W.); (Y.S.); (Y.S.); (Y.X.); (H.W.)
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang 453003, China;
| | - Wenqing Jia
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang 453003, China;
| | - Yuxiao Shen
- Zhengzhou Key Laboratory for Research and Development of Regional Plants, College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou 450002, China; (Y.S.); (W.L.); (Z.W.); (Y.S.); (Y.S.); (Y.X.); (H.W.)
| | - Yuke Sun
- Zhengzhou Key Laboratory for Research and Development of Regional Plants, College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou 450002, China; (Y.S.); (W.L.); (Z.W.); (Y.S.); (Y.S.); (Y.X.); (H.W.)
| | - Yufeng Xu
- Zhengzhou Key Laboratory for Research and Development of Regional Plants, College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou 450002, China; (Y.S.); (W.L.); (Z.W.); (Y.S.); (Y.S.); (Y.X.); (H.W.)
| | - Hongwei Wang
- Zhengzhou Key Laboratory for Research and Development of Regional Plants, College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou 450002, China; (Y.S.); (W.L.); (Z.W.); (Y.S.); (Y.S.); (Y.X.); (H.W.)
| | - Wenqian Shang
- Zhengzhou Key Laboratory for Research and Development of Regional Plants, College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou 450002, China; (Y.S.); (W.L.); (Z.W.); (Y.S.); (Y.S.); (Y.X.); (H.W.)
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Grant LK, Crosthwaite PC, Mayer MD, Wang W, Stickgold R, St. Hilaire MA, Lockley SW, Rahman SA. Supplementation of ambient lighting with a task lamp improves daytime alertness and cognitive performance in sleep-restricted individuals. Sleep 2023; 46:zsad096. [PMID: 37026184 PMCID: PMC10424162 DOI: 10.1093/sleep/zsad096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 02/27/2023] [Indexed: 04/08/2023] Open
Abstract
STUDY OBJECTIVES We examined the impact of adding a single-high-melanopic-illuminance task lamp in an otherwise low-melanopic-illuminance environment on alertness, neurobehavioral performance, learning, and mood during an 8-h simulated workday. METHODS Sixteen healthy young adults [mean(±SD) age = 24.2 ± 2.9, 8F] participated in a 3-day inpatient study with two 8-h simulated workdays and were randomized to either ambient fluorescent room light (~30 melanopic EDI lux, 50 lux), or room light supplemented with a light emitting diode task lamp (~250 melanopic EDI lux, 210 lux) in a cross-over design. Alertness, mood, and cognitive performance were assessed throughout the light exposure and compared between conditions using linear mixed models. RESULTS The primary outcome measure of percentage correct responses on the addition task was significantly improved relative to baseline in the supplemented condition (3.15% ± 1.18%), compared to the ambient conditions (0.93% ± 1.1%; FDR-adj q = 0.005). Additionally, reaction time and attentional failures on the psychomotor vigilance tasks were significantly improved with exposure to supplemented compared to ambient lighting (all, FDR-adj q ≤ 0.030). Furthermore, subjective measures of sleepiness, alertness, happiness, health, mood, and motivation were also significantly better in the supplemented, compared to ambient conditions (all, FDR-adj q ≤ 0.036). There was no difference in mood disturbance, affect, declarative memory, or motor learning between the conditions (all, FDR-adj q ≥ 0.308). CONCLUSIONS Our results show that supplementing ambient lighting with a high-melanopic-illuminance task lamp can improve daytime alertness and cognition. Therefore, high-melanopic-illuminance task lighting may be effective when incorporated into existing suboptimal lighting environments. CLINICAL TRIALS NCT04745312. Effect of Lighting Supplementation on Daytime Cognition. https://clinicaltrials.gov/ct2/show/NCT04745312.
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Affiliation(s)
- Leilah K Grant
- Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women’s Hospital, Boston, MA, USA
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
| | - Phoebe C Crosthwaite
- Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women’s Hospital, Boston, MA, USA
| | - Matthew D Mayer
- Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women’s Hospital, Boston, MA, USA
| | - Wei Wang
- Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women’s Hospital, Boston, MA, USA
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
| | - Robert Stickgold
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
- Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA, USA
- Department of Psychiatry, Harvard Medical School, Boston, MA, USA
| | - Melissa A St. Hilaire
- Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women’s Hospital, Boston, MA, USA
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
| | - Steven W Lockley
- Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women’s Hospital, Boston, MA, USA
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
| | - Shadab A Rahman
- Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women’s Hospital, Boston, MA, USA
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
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Wang W, Gao L, Zhao T, Chen J, Chen T, Lin W. Arabidopsis NF-YC7 Interacts with CRY2 and PIF4/5 to Repress Blue Light-Inhibited Hypocotyl Elongation. Int J Mol Sci 2023; 24:12444. [PMID: 37569819 PMCID: PMC10419918 DOI: 10.3390/ijms241512444] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/07/2023] [Accepted: 06/20/2023] [Indexed: 08/13/2023] Open
Abstract
Light is an important environmental factor. Plants adapt to their light environment by developing the optimal phenotypes. Light-mediated hypocotyl growth is an ideal phenotype for studying how plants respond to light. Thus far, many signaling components in light-mediated hypocotyl growth have been reported. Here, we focused on identifying the transcription factors (TFs) involved in blue light-mediated hypocotyl growth. We analyzed the blue-light-mediated hypocotyl lengths of Arabidopsis TF-overexpressing lines and identified three NF-YC proteins, NF-YC7, NF-YC5, and NF-YC8 (NF-YCs being the short name), as the negative regulators in blue light-inhibited hypocotyl elongation. NF-YC-overexpressing lines developed longer hypocotyls than those of the wild type under blue light, while the deficient mutants nf-yc5nf-yc7 and nf-yc7nf-yc8 failed to exhibit hypocotyl elongation under blue light. NF-YCs physically interacted with CRY2 (cryptochrome 2) and PIF4/5 (phytochrome interacting factor 4 or 5), while the NF-YCs-PIF4/5 interactions were repressed by CRY2. Moreover, the overexpression of CRY2 or deficiency of PIF4/5 repressed NF-YC7-induced hypocotyl elongation under blue light. Further investigation revealed that NF-YC7 may increase CRY2 degradation and regulate PIF4/5 activities under blue light. Taken together, this study will provide new insight into the mechanism of how blue light inhibits hypocotyl elongation.
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Affiliation(s)
- Wei Wang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- College of Life Sciences, Ningde Normal University, Ningde 352100, China
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lin Gao
- Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Tianliang Zhao
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jiamei Chen
- Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ting Chen
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wenxiong Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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