Photochemistry and Photobiology最新文献_第9页

The public-health significance of far-UVC-induced indoor ozone and its associated secondary chemistry. 远紫外线诱发的室内臭氧及其相关二次化学的公共卫生意义。

IF 2.6 4区生物学

Photochemistry and Photobiology Pub Date : 2024-09-01 Epub Date: 2023-11-30 DOI: 10.1111/php.13892

David J Brenner

{"title":"The public-health significance of far-UVC-induced indoor ozone and its associated secondary chemistry.","authors":"David J Brenner","doi":"10.1111/php.13892","DOIUrl":"10.1111/php.13892","url":null,"abstract":"There has been much recent interest in whole-room far-UVC (wavelength around 222 nm) to markedly and safely reduce overall levels of airborne pathogens in occupied indoor locations. Far-UVC light produces very low levels of ozone-in real-world scenarios induced ozone levels of less than 10 ppb, and much less in moderately or well-ventilated rooms compliant with US far-UVC dose recommendations, and very much less in rooms compliant with international far-UVC dose standards. At these very low ozone levels, there is no epidemiological evidence of increased health risks from any of the very large outdoor ozone studies, whether from ozone alone or from ozone plus associated pollutants. Indoors, at the low ozone concentrations of relevance here, ozone does not react rapidly enough with preexisting airborne volatile organic compounds to compete with even extremely low levels of room ventilation, so significant ozone-induced ultrafine particle production is very unlikely. Direct measurements in real-life room scenarios are consistent with these conclusions. A potential exception is the cleaning material limonene, which has an unusually high ozone interaction cross-section; in the far-UVC context, turning off far-UVC lights during cleaning with limonene products would be reasonable.","PeriodicalId":20133,"journal":{"name":"Photochemistry and Photobiology","volume":" ","pages":"1186-1190"},"PeriodicalIF":2.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138461795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Associations between sun exposure, skin pH, and epidermal permeability in pregnancy: A longitudinal observational study. 孕期日晒、皮肤 pH 值和表皮渗透性之间的关系：一项纵向观察研究。

IF 2.6 4区生物学

Photochemistry and Photobiology Pub Date : 2024-09-01 Epub Date: 2024-02-09 DOI: 10.1111/php.13920

Rachel Stevens, Shelley Gorman, Diana Arabiat, Claus T Christophersen, Debra J Palmer

{"title":"Associations between sun exposure, skin pH, and epidermal permeability in pregnancy: A longitudinal observational study.","authors":"Rachel Stevens, Shelley Gorman, Diana Arabiat, Claus T Christophersen, Debra J Palmer","doi":"10.1111/php.13920","DOIUrl":"10.1111/php.13920","url":null,"abstract":"Little is known about how sun exposure may affect the maternal skin barrier during pregnancy when many hormonal and physiological changes occur. In this longitudinal observational study, 50 pregnant women were recruited at 18-24 weeks' gestation, 25 in summer-autumn, and 25 in winter-spring. At three time points in pregnancy at 18-24, 28-30, and 36-38 weeks' gestation, participants completed a validated sun exposure questionnaire and had skin permeability and surface pH measured on the volar forearm. We identified an association between increased sun exposure and increased skin permeability at 18-24 weeks' gestation (β = 0.85, p = 0.01). Lower transepidermal water loss (decreased skin permeability), mean = 12.1 (SD = 5.1) at 28-30 weeks' gestation was observed, compared to mean = 12.6 (SD = 4.0) at 18-24 weeks' and mean = 13.7 (SD = 8.5) at 36-38 weeks' gestation (n = 27, β = -1.83, p = 0.007). Higher skin pH readings, mean = 5.80 (SD = 0.58) were found at 28-30 weeks' gestation, compared to mean = 5.25 (SD = 0.62) at 18-24 weeks' and mean = 5.47 (SD = 0.57) at 36-38 weeks' gestation (n = 27, β = 0.40, p = 0.004). These gestational fluctuations remained after adjusting for Fitzpatrick skin type, season, and sun exposure. We observed gestational fluctuations in both skin permeability and skin pH, with 28-30 weeks' gestation being a significant point of difference compared to mid- and late-pregnancy periods.","PeriodicalId":20133,"journal":{"name":"Photochemistry and Photobiology","volume":" ","pages":"1519-1526"},"PeriodicalIF":2.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139712845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Protective effect of isoquercitrin on UVB-induced injury in HaCaT cells and mice skin through anti-inflammatory, antioxidant, and regulation of MAPK and JAK2-STAT3 pathways. 异槲皮素通过抗炎、抗氧化以及调节 MAPK 和 JAK2-STAT3 通路，对紫外线诱导的 HaCaT 细胞和小鼠皮肤损伤具有保护作用。

IF 2.6 4区生物学

Photochemistry and Photobiology Pub Date : 2024-09-01 Epub Date: 2024-02-09 DOI: 10.1111/php.13919

Yingyan Li, Yunge Ma, Yike Yao, Guohua Ru, Chong Lan, Liyan Li, Tao Huang

{"title":"Protective effect of isoquercitrin on UVB-induced injury in HaCaT cells and mice skin through anti-inflammatory, antioxidant, and regulation of MAPK and JAK2-STAT3 pathways.","authors":"Yingyan Li, Yunge Ma, Yike Yao, Guohua Ru, Chong Lan, Liyan Li, Tao Huang","doi":"10.1111/php.13919","DOIUrl":"10.1111/php.13919","url":null,"abstract":"Natural products are favored in the study of skin photodamage protection recently. Isoquercetin, namely 3-O-glucoside of quercetin, can be isolated from various plant species. In present research, the protective effect of isoquercitrin on UVB-induced injury in cells and mice skin were investigated. Our study reveals that 400 μM of isoquercitrin exhibits the best viability on UVB-irradiated HaCaT cells, and beneficial effects against oxidative stress UVB-induced in skin tissue by decreasing the levels of reactive oxygen species (ROS) and malondialdehyde (MDA), and simultaneously enhancing the activity of superoxide dismutase (SOD). Additionally, isoquercitrin was identified as an anti-inflammatory agent by reducing the level of COX-2 by Western blot analysis, and inflammatory cytokines such as IL-6, IL-1β, and TNF-α by ELISA, and UVB-induced epidermal thickening evidenced by H&E staining. It also effectively prevented UVB-induced collagen fibers from degradation identified by Masson staining. Isoquercitrin significantly inhibited MAPK pathway by downregulating the levels of AP-1, MMP-1, MMP-3, phospho-p38, phospho-JNK, phospho-ERK, cleaved caspase-9, cleaved caspase-3, and JAK2-STAT3 pathway by western blot analysis. In conclusion, isoquercitrin pretreatment protected mice skin from UVB irradiation-induced injury effectively, and the underlying mechanism may involve MAPK and JAK2-STAT3 signaling pathways.","PeriodicalId":20133,"journal":{"name":"Photochemistry and Photobiology","volume":" ","pages":"1507-1518"},"PeriodicalIF":2.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139712846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photocatalytic fixation and oxygenation of NAD⁺/NADP⁺ and sulfides using solar light: Exploring mechanistic investigations and their impact on synthetic applications. 利用太阳光对 NAD+ /NADP+ 和硫化物进行光催化固定和氧合：探索机理研究及其对合成应用的影响。

IF 2.6 4区生物学

Photochemistry and Photobiology Pub Date : 2024-09-01 Epub Date: 2023-12-06 DOI: 10.1111/php.13890

Ravindra K Shukla, Rajesh K Yadav, Vittal L Gole, Satyam Singh, Navneet Kumar Gupta, Jin-Ook Baeg

{"title":"Photocatalytic fixation and oxygenation of NAD+/NADP+ and sulfides using solar light: Exploring mechanistic investigations and their impact on synthetic applications.","authors":"Ravindra K Shukla, Rajesh K Yadav, Vittal L Gole, Satyam Singh, Navneet Kumar Gupta, Jin-Ook Baeg","doi":"10.1111/php.13890","DOIUrl":"10.1111/php.13890","url":null,"abstract":"Sulfur-doped Eosin-B (SDE-B) photocatalysts were synthesized for the first time utilizing sublimed sulfur (S8) as a dopant in an in situ thermal copolymerization technique. Sulfur doping not only increased Eosin-B (E-B) absorption range for solar radiation but also improved fixation and oxygenation capabilities. The doped sulfur bridges the S-S bond by substituting for the edge bromine of the E-B bond. The improved photocatalytic activity of SDE-B in the fixation and oxygenation of NAD+/NADP+ and sulfides using solar light is attributed to the photo-induced hole of SDE-B's high fixation and oxygenation capacity, as well as an efficient suppression of electron and hole recombination. The powerful light-harvesting bridge system created using SDE-B as a photocatalyst works extremely well, resulting in high NADH/NADPH regeneration (79.58/76.36%) and good sulfoxide yields (98.9%) under solar light. This study focuses on the creation and implementation of a sulfur-doped photocatalyst for direct fine chemical regeneration and organic transformation.","PeriodicalId":20133,"journal":{"name":"Photochemistry and Photobiology","volume":" ","pages":"1235-1246"},"PeriodicalIF":2.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138488275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to "A new method to easily assess bacteriostatic and bactericidal activity of ultraviolet radiation using quantitative image analysis". 更正 "利用定量图像分析轻松评估紫外线辐射抑菌和杀菌活性的新方法"。

IF 2.6 4区生物学

Photochemistry and Photobiology Pub Date : 2024-09-01 Epub Date: 2024-08-28 DOI: 10.1111/php.14013

引用次数: 0

Critical PDT Theory X: The continuing saga of ruthenium. 临界 PDT 理论 X：钌的持续传奇。

IF 2.6 4区生物学

Photochemistry and Photobiology Pub Date : 2024-09-01 Epub Date: 2023-12-11 DOI: 10.1111/php.13899

David Kessel

引用次数: 0

Evaluation of the use of chamomile in isolation and in association with laser photobiomodulation in the healing of rats oral mucosa. 在大鼠口腔黏膜愈合过程中单独使用洋甘菊以及将其与激光光生物调制联合使用的评估。

IF 2.6 4区生物学

Photochemistry and Photobiology Pub Date : 2024-09-01 Epub Date: 2024-01-19 DOI: 10.1111/php.13901

Tila Fortuna, Juliana Borges Dantas, Rejane Conceição Santana, Hortência Resende Della Cella, Elisângela de Jesus Campos, Gabriela Botelho Martins

{"title":"Evaluation of the use of chamomile in isolation and in association with laser photobiomodulation in the healing of rats oral mucosa.","authors":"Tila Fortuna, Juliana Borges Dantas, Rejane Conceição Santana, Hortência Resende Della Cella, Elisângela de Jesus Campos, Gabriela Botelho Martins","doi":"10.1111/php.13901","DOIUrl":"10.1111/php.13901","url":null,"abstract":"Laser photobiomodulation (LPBM) has been shown to be one of the possible modulating agents of inflammation. Similarly, medicinal plants, such as chamomile (Matricaria recutita) are also used with the same purpose. To evaluate tissue repair in the dorsum of the tongue of rats under topical use of chamomile alone and in association with LPBM. Seventy-five male Wistar rats received a standardized wound on the dorsum of the tongue and were allocated into experimental groups: Control (G1), Chamomile Fluid extract (G2), Chamomile Infusion (G3), Laser (G4), Chamomile Infusion + Laser (G5). Euthanasia was done on days 3, 7, and 14 after surgery. Ulcers were evaluated and measured with a caliper. Sections stained with hematoxylin and eosin and Picrosirius Red allowed evaluation of edema, inflammatory infiltrate, cellularity, and re-epithelialization and characterization of total collagen. Histomorphometric analysis of the percentage of total collagen, the distance from the basal layer to the epithelial surface, and the thickness of the stratum corneum were performed. The G2 and G4 groups modulated the exudative and proliferative phases of inflammation, both clinically and histologically. The G3 and G5 groups did not show significant differences in relation to the G1 group in most of the evaluated parameters. Chamomile fluid extract and LPBM alone showed better clinical and histological responses for tissue repair than the association between these therapeutic modalities. There were differences in the parameters of clinical, histological, and histomorphometric patterns between the experimental groups of the present investigation. The LPBM proved to be superior in the performed analysis.","PeriodicalId":20133,"journal":{"name":"Photochemistry and Photobiology","volume":" ","pages":"1431-1445"},"PeriodicalIF":2.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139491929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photophobotaxis in the filamentous cyanobacterium Phormidium lacuna: Mechanisms and implications for photosynthesis-based light direction sensing. 丝状蓝藻 Phormidium lacuna 的亲光性：基于光合作用的光方向感应的机制和影响。

IF 2.6 4区生物学

Photochemistry and Photobiology Pub Date : 2024-09-01 Epub Date: 2024-01-25 DOI: 10.1111/php.13908

Elina Schwabenland, Caroline Janine Jelen, Nora Weber, Tilman Lamparter

{"title":"Photophobotaxis in the filamentous cyanobacterium Phormidium lacuna: Mechanisms and implications for photosynthesis-based light direction sensing.","authors":"Elina Schwabenland, Caroline Janine Jelen, Nora Weber, Tilman Lamparter","doi":"10.1111/php.13908","DOIUrl":"10.1111/php.13908","url":null,"abstract":"Cyanobacterium Phormidium lacuna filaments move from dark to illuminated areas by twitching motility. Time-lapse recordings demonstrated that this photophobotaxis response was based on random movements with movement reversion at the light-dark border. The filaments in the illuminated area form a biofilm attached to the surface. The wild-type and the pixJ and cphA mutants were investigated for photophobotaxis at diverse wavelengths and intensities. CphA is a cyanobacterial phytochrome; PixJ is a biliprotein with a methyl-accepting chemotaxis domain and is regarded as a phototaxis photoreceptor in other species. The cphA mutant exhibited reduced biofilm surface binding. The pixJ mutant was characterized as a negative photophobotaxis regulator and not as a light direction sensor. 3-(3,4-dichlorophenyl)1,1-dimethylurea (DCMU) blocks electron transfer in PS II. At concentrations of 100 and 1000 μM DCMU, photophobotaxis was inhibited to a greater extent than motility, suggesting that PSII has a role in photophobotaxis. We argue that the intracellular concentrations of regular photoreceptors, including CphA or PixJ, are too small for a filament to sense rapid light intensity changes in very weak light. Three arguments, specific inhibition by DCMU, broad spectral sensitivity, and sensitivity against weak light, support photosynthesis pigments for use as photophobotaxis sensors.","PeriodicalId":20133,"journal":{"name":"Photochemistry and Photobiology","volume":" ","pages":"1290-1309"},"PeriodicalIF":2.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139546812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evidence for the involvement of keratinocyte-derived microvesicle particles in the photosensitivity associated with xeroderma pigmentosum type A deficiency. 有证据表明角质细胞衍生的微囊颗粒参与了与 A 型色素性角化症相关的光敏现象。

IF 2.6 4区生物学

Photochemistry and Photobiology Pub Date : 2024-09-01 Epub Date: 2024-01-29 DOI: 10.1111/php.13915

Lea Christian, Pranali Manjrekar, Karen M Henkels, Christine M Rapp, Risha Annamraju, Rushabh P Lohade, Shikshita Singh, M Alexandra Carpenter, Saman Khan, Michael G Kemp, Yanfang Chen, Ravi P Sahu, Jeffrey B Travers

{"title":"Evidence for the involvement of keratinocyte-derived microvesicle particles in the photosensitivity associated with xeroderma pigmentosum type A deficiency.","authors":"Lea Christian, Pranali Manjrekar, Karen M Henkels, Christine M Rapp, Risha Annamraju, Rushabh P Lohade, Shikshita Singh, M Alexandra Carpenter, Saman Khan, Michael G Kemp, Yanfang Chen, Ravi P Sahu, Jeffrey B Travers","doi":"10.1111/php.13915","DOIUrl":"10.1111/php.13915","url":null,"abstract":"Photosensitivity can be due to numerous causes. The photosensitivity associated with deficiency of xeroderma pigmentosum type A (XPA) has been previously shown to be associated with excess levels of the lipid mediator platelet-activating factor (PAF) generated by the keratinocyte. As PAF has been reported to trigger the production of subcellular microvesicle particles (MVP) due to the enzyme acid sphingomyelinase (aSMase), the goal of these studies was to discern if PAF and aSMase could serve as therapeutic targets for the XPA deficiency photosensitivity. HaCaT keratinocytes lacking XPA generated greater levels of MVP in comparison to control cells. Mice deficient in XPA also generated enhanced MVP levels in skin and in plasma in response to UV radiation. Use of a genetic strategy with mice deficient in both XPA and PAF receptors revealed that these mice generated less MVP release as well as decreased skin erythema and cytokine release compared to XPA knockout mice alone. Finally, the aSMase inhibitor imipramine blocked UV-induced MVP release in HaCaT keratinocytes, as well as XPA knockout mice. These studies support the concept that the photosensitivity associated with XPA involves PAF- and aSMase-mediated MVP release and provides a potential pharmacologic target in treating this form of photosensitivity.","PeriodicalId":20133,"journal":{"name":"Photochemistry and Photobiology","volume":" ","pages":"1457-1466"},"PeriodicalIF":2.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11284252/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139575500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simultaneous irradiation of 660 and 808 nm on gingival epithelial cells and fibroblasts induces different patterns of oxidative/antioxidative activities: What is the role of the cell type and irradiation parameters? 660和808 nm同时照射牙龈上皮细胞和成纤维细胞诱导不同模式的氧化/抗氧化活性:细胞类型和照射参数的作用是什么?

IF 2.6 4区生物学

Photochemistry and Photobiology Pub Date : 2024-09-01 Epub Date: 2023-11-27 DOI: 10.1111/php.13886

Anaeliza Figueiredo Dos Santos, Flávia Cristina Rosin Prado, Cristina de Paula Novaes, Ana Carolina de Magalhães, Maria Cristina Zindel Deboni, Luciana Corrêa

{"title":"Simultaneous irradiation of 660 and 808 nm on gingival epithelial cells and fibroblasts induces different patterns of oxidative/antioxidative activities: What is the role of the cell type and irradiation parameters?","authors":"Anaeliza Figueiredo Dos Santos, Flávia Cristina Rosin Prado, Cristina de Paula Novaes, Ana Carolina de Magalhães, Maria Cristina Zindel Deboni, Luciana Corrêa","doi":"10.1111/php.13886","DOIUrl":"10.1111/php.13886","url":null,"abstract":"The aim of this study was to investigate whether simultaneous irradiation at 660 and 808 nm generates different patterns of oxidative/antioxidative activities compared to consecutive irradiation. Primary cultures of gingival keratinocytes and fibroblasts were exposed to a diose laser (660 ± 2 nm and 808 ± 2 nm, 100 mW, 0.09 cm2 spot area) using double irradiation with the two wavelengths (consecutive or simultaneous) for 6, 10, and 20 s. The two irradiation regimens did not increase cell viability in any of the experimental conditions. Lipid peroxidation was increased after consecutive irradiation in epithelial cells, which was not detected after simultaneous irradiation. After 20s of the simultaneous mode, ROS levels increased, but antioxidative balance decreased. In the fibroblasts, the two double irradiations induced ROS reduction, increase in lipid peroxidation, and improvement of antioxidative balance, mainly after the 20 s irradiation time. In conclusion, simultaneous and consecutive irradiation induced distinct oxidative stress modulation in oral epithelial cells and fibroblasts. The imbalance in the oxidative system observed after longer exposures, allied with the absence of a significant increase in the viability of the two cell types, suggests a contraindication for longer simultaneous irradiation in clinical situations that demand cellular stimulation.","PeriodicalId":20133,"journal":{"name":"Photochemistry and Photobiology","volume":" ","pages":"1446-1456"},"PeriodicalIF":2.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138445778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0