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Gao K, He Z, Xiong J, Chen Q, Lai B, Liu F, Chen P, Chen M, Luo W, Huang J, Ding W, Wang H, Pu Y, Zheng L, Jiao Y, Zhang M, Tang Z, Yue Q, Yang D, Yan T. Population structure and adaptability analysis of Schizothorax o'connori based on whole-genome resequencing. BMC Genomics 2024; 25:145. [PMID: 38321406 PMCID: PMC10845765 DOI: 10.1186/s12864-024-09975-9] [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: 07/16/2023] [Accepted: 01/04/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND Schizothorax o'connori is an endemic fish distributed in the upper and lower reaches of the Yarlung Zangbo River in China. It has experienced a fourth round of whole gene replication events and is a good model for exploring the genetic differentiation and environmental adaptability of fish in the Qinghai-Tibet Plateau. The uplift of the Qinghai-Tibet Plateau has led to changes in the river system, thereby affecting gene exchange and population differentiation between fish populations. With the release of fish whole genome data, whole genome resequencing has been widely used in genetic evolutionary analysis and screening of selected genes in fish, which can better elucidate the genetic basis and molecular environmental adaptation mechanisms of fish. Therefore, our purpose of this study was to understand the population structure and adaptive characteristics of S. o'connori using the whole-genome resequencing method. RESULTS The results showed that 23,602,746 SNPs were identified from seven populations, mostly distributed on chromosomes 2 and 23. There was no significant genetic differentiation between the populations, and the genetic diversity was relatively low. However, the Zangga population could be separated from the Bomi, Linzhi, and Milin populations in the cluster analysis. Based on historical dynamics analysis of the population, the size of the ancestral population of S. o'connori was affected by the late accelerated uplift of the Qinghai Tibet Plateau and the Fourth Glacial Age. The selected sites were mostly enriched in pathways related to DNA repair and energy metabolism. CONCLUSION Overall, the whole-genome resequencing analysis provides valuable insights into the population structure and adaptive characteristics of S. o'connori. There was no obvious genetic differentiation at the genome level between the S. o'connori populations upstream and downstream of the Yarlung Zangbo River. The current distribution pattern and genetic diversity are influenced by the late accelerated uplift of the Qinghai Tibet Plateau and the Fourth Ice Age. The selected sites of S. o'connori are enriched in the energy metabolism and DNA repair pathways to adapt to the low temperature and strong ultraviolet radiation environment at high altitude.
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Affiliation(s)
- Kuo Gao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Zhi He
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Jinxin Xiong
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Qiqi Chen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Bolin Lai
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Fei Liu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Ping Chen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Mingqiang Chen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Wenjie Luo
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Junjie Huang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Wenxiang Ding
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Haochen Wang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Yong Pu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Li Zheng
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Yuanyuan Jiao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Mingwang Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Ziting Tang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Qingsong Yue
- Huadian Tibet Hydropower Development Co.,Ltd, Dagu Hydropower Station, Sangri, 856200, Shannan, China
| | - Deying Yang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China.
| | - Taiming Yan
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China.
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202
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Gopalan T, Muhamad MR, Wai Hoe VC, Hassandarvish P. N95 respirator hybrid decontamination method using Ultraviolet Germicidal Irradiation (UVGI) coupled with Microwave-Generated Steam (MGS). PLoS One 2024; 19:e0296871. [PMID: 38319932 PMCID: PMC10846690 DOI: 10.1371/journal.pone.0296871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 12/20/2023] [Indexed: 02/08/2024] Open
Abstract
The Coronavirus Disease 2019 (COVID-19) pandemic has induced a critical supply of personal protective equipment (PPE) especially N95 respirators. Utilizing respirator decontamination procedures to reduce the pathogen load of a contaminated N95 respirator can be a viable solution for reuse purposes. In this study, the efficiency of a novel hybrid respirator decontamination method of ultraviolet germicidal irradiation (UVGI) which utilizes ultraviolet-C (UV-C) rays coupled with microwave-generated steam (MGS) against feline coronavirus (FCoV) was evaluated. The contaminated 3M 1860 respirator pieces were treated with three treatments (UVGI-only, MGS-only, and Hybrid-UVGI + MGS) with variable time. The virucidal activity was evaluated using the TCID50 method. The comparison of decontamination efficiency of the treatments indicated that the hybrid method achieved at least a pathogen log reduction of 4 logs, faster than MGS and UVGI. These data recommend that the proposed hybrid decontamination system is more effective comparatively in achieving pathogen log reduction of 4 logs.
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Affiliation(s)
- Thirumaaran Gopalan
- Department of Mechanical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Mohd Ridha Muhamad
- Department of Mechanical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur, Malaysia
- Centre of Advanced Manufacturing and Material Processing (AMMP Centre), Universiti Malaya, Kuala Lumpur, Malaysia
| | - Victor Chee Wai Hoe
- Centre for Epidemiology and Evidence-Based Practice, Department of Social and Preventive Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Pouya Hassandarvish
- Tropical Infectious Diseases Research & Education Centre, Universiti Malaya, Kuala Lumpur, Malaysia
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203
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Larnac E, Montoni A, Haydont V, Marrot L, Rochette PJ. Lipid Peroxidation as the Mechanism Underlying Polycyclic Aromatic Hydrocarbons and Sunlight Synergistic Toxicity in Dermal Fibroblasts. Int J Mol Sci 2024; 25:1905. [PMID: 38339182 PMCID: PMC10856043 DOI: 10.3390/ijms25031905] [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: 01/07/2024] [Revised: 01/30/2024] [Accepted: 02/01/2024] [Indexed: 02/12/2024] Open
Abstract
Light and atmospheric pollution are both independently implicated in cancer induction and premature aging. Evidence has been growing more recently on the toxic synergy between light and pollutants. Polycyclic aromatic hydrocarbons (PAHs) originate from the incomplete combustion of organic matter. Some PAHs, such as the Benzo[a]pyrene (BaP), absorb ultraviolet A (UVA) wavelengths and can act as exogenous chromophores, leading to synergistic toxicity through DNA damage and cytotoxicity concomitant to ROS formation. In this study, we shed light on the mechanism underlying the toxic synergy between PAHs and UVA. Using dermal fibroblasts co-exposed to UVA and BaP, we have demonstrated that the photosensitization reaction causes mortality, which is most likely caused by ROS accumulation. We have shown that these ROS are concentrated in the lipids, which causes an important induction of lipid peroxidation and malondialdehyde, by-products of lipid peroxidation. We have also shown the accumulation of bulky DNA damage, most likely generated by these by-products of lipid peroxidation. To our knowledge, this study represents the first one depicting the molecular effects of photo-pollution on dermal skin.
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Affiliation(s)
- Eloïse Larnac
- Centre de Recherche du CHU de Québec, Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement, Québec, QC G1S 4L8, Canada; (E.L.); (A.M.)
- Centre de Recherche en Organogénèse Expérimentale, Université Laval/LOEX, Québec, QC G1V 0A6, Canada
| | - Alicia Montoni
- Centre de Recherche du CHU de Québec, Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement, Québec, QC G1S 4L8, Canada; (E.L.); (A.M.)
- Centre de Recherche en Organogénèse Expérimentale, Université Laval/LOEX, Québec, QC G1V 0A6, Canada
| | - Valérie Haydont
- Advanced Research, L’OREAL Research & Innovation, 93600 Aulnay-Sous-Bois, France; (V.H.); (L.M.)
| | - Laurent Marrot
- Advanced Research, L’OREAL Research & Innovation, 93600 Aulnay-Sous-Bois, France; (V.H.); (L.M.)
| | - Patrick J. Rochette
- Centre de Recherche du CHU de Québec, Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement, Québec, QC G1S 4L8, Canada; (E.L.); (A.M.)
- Centre de Recherche en Organogénèse Expérimentale, Université Laval/LOEX, Québec, QC G1V 0A6, Canada
- Département d’Ophtalmologie et ORL-Chirurgie Cervico-Faciale, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
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204
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Sun J, Rene ER, Tao D, Lu Y, Jin Q, Lam JCH, Leung KMY, He Y. Degradation of organic UV filters in the water environment: A concise review on the mechanism, toxicity, and technologies. J Hazard Mater 2024; 463:132822. [PMID: 37898090 DOI: 10.1016/j.jhazmat.2023.132822] [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: 04/18/2023] [Revised: 08/15/2023] [Accepted: 10/19/2023] [Indexed: 10/30/2023]
Abstract
Organic ultraviolet filters (OUVFs) have been used globally for the past 20 years. Given that OUVFs can be quickly released from sunscreens applied on human skins, they have been frequently detected in aquatic environments and organisms. Some byproducts of OUVFs might be more recalcitrant and toxic than their parent compounds. To further assess the toxicity and potential risk of OUVFs' byproducts, it is necessary to determine the fate of OUVFs and identify their transformation products. This review summarizes and analyzes pertinent literature and reports in the field of OUVFs research. These published research works majorly focus on the degradation mechanisms of OUVFs in aquatic environments, their intermediates/byproducts, and chlorination reaction. Photodegradation (direct photolysis, self-sensitive photolysis and indirect photolysis) and biodegradation are the main transformation pathways of OUVFs through natural degradation. To remove residual OUVFs' pollutants from aqueous environments, novel physicochemical and biological approaches have been developed in recent years. Advanced oxidation, ultrasound, and bio-based technologies have been proven to eliminate OUVFs from wastewaters. In addition, the disinfection mechanism and the byproducts (DBPs) of various OUVFs in swimming pools are discussed in this review. Besides, knowledge gaps and future research directions in this field of study are also mentioned.
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Affiliation(s)
- Jiaji Sun
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), 511458 Guangzhou, China
| | - Eldon R Rene
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, P. O. Box 3015, 2611AX Delft, the Netherlands
| | - Danyang Tao
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Yichun Lu
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), 511458 Guangzhou, China
| | - Qianqian Jin
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Jason Chun-Ho Lam
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), 511458 Guangzhou, China
| | - Kenneth M Y Leung
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Yuhe He
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), 511458 Guangzhou, China.
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205
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Chung KB, Lee YI, Kim YJ, Do HA, Suk J, Jung I, Kim DY, Lee JH. Quantitative Analysis of Hair Luster in a Novel Ultraviolet-Irradiated Mouse Model. Int J Mol Sci 2024; 25:1885. [PMID: 38339167 PMCID: PMC10855743 DOI: 10.3390/ijms25031885] [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: 12/19/2023] [Revised: 01/30/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024] Open
Abstract
Hair luster is a key attribute of healthy hair and a crucial aspect of cosmetic appeal, reflecting the overall health and vitality of hair. Despite its significance, the advancement of therapeutic strategies for hair luster enhancement have been limited due to the absence of an effective experimental model. This study aimed to establish a novel animal model to assess hair gloss, employing ultraviolet (UV) irradiation on C57BL/6 mice. Specifically, UVB irradiation was meticulously applied to the shaved skin of these mice, simulating conditions that typically lead to hair luster loss in humans. The regrowth and characteristics of the hair were evaluated using a dual approach: an Investigator's Global Assessment (IGA) scale for subjective assessment and an image-based pixel-count method for objective quantification. These methods provided a comprehensive understanding of the changes in hair quality post-irradiation. To explore the potential reversibility of hair luster changes, oral minoxidil was administered, a treatment known for its effects on hair growth and texture. Further, to gain insights into the underlying biological mechanisms, bulk RNA transcriptomic analysis of skin tissue was conducted. This analysis revealed significant alterations in the expression of keratin-associated protein (KRTAP) genes, suggesting modifications in hair keratin crosslinking due to UV exposure. These changes are crucial in understanding the molecular dynamics affecting hair luster. The development of this new mouse model is a significant advancement in hair care research. It not only facilitates the evaluation of hair luster in a controlled setting but also opens avenues for the research and development of innovative therapeutic strategies. This model holds promise for the formulation of more effective hair care products and treatments, potentially revolutionizing the approach towards managing and enhancing hair luster.
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Affiliation(s)
- Kyung Bae Chung
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; (K.B.C.); (Y.I.L.)
- Scar Laser and Plastic Surgery Center, Yonsei Cancer Hospital, Seoul 03722, Republic of Korea
| | - Young In Lee
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; (K.B.C.); (Y.I.L.)
- Scar Laser and Plastic Surgery Center, Yonsei Cancer Hospital, Seoul 03722, Republic of Korea
| | - Yoo Jin Kim
- Global Medical Research Center Co., Ltd., Seoul 06526, Republic of Korea; (Y.J.K.); (H.A.D.); (J.S.); (I.J.)
| | - Hyeon Ah Do
- Global Medical Research Center Co., Ltd., Seoul 06526, Republic of Korea; (Y.J.K.); (H.A.D.); (J.S.); (I.J.)
| | - Jangmi Suk
- Global Medical Research Center Co., Ltd., Seoul 06526, Republic of Korea; (Y.J.K.); (H.A.D.); (J.S.); (I.J.)
| | - Inhee Jung
- Global Medical Research Center Co., Ltd., Seoul 06526, Republic of Korea; (Y.J.K.); (H.A.D.); (J.S.); (I.J.)
| | - Do-Young Kim
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; (K.B.C.); (Y.I.L.)
| | - Ju Hee Lee
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; (K.B.C.); (Y.I.L.)
- Scar Laser and Plastic Surgery Center, Yonsei Cancer Hospital, Seoul 03722, Republic of Korea
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206
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Bratu DV, Zolya MA, Moraru SA. RoboCoV Cleaner: An Indoor Autonomous UV-C Disinfection Robot with Advanced Dual-Safety Systems. Sensors (Basel) 2024; 24:974. [PMID: 38339691 DOI: 10.3390/s24030974] [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: 01/05/2024] [Revised: 01/21/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024]
Abstract
In the face of today's ever-evolving global health landscape and ambient assisted living (AAL), marked by the persistent emergence of novel viruses and diseases that impact vulnerable categories and individual safety, the need for innovative disinfection solutions has surged to unprecedented levels. In pursuit of advancing the field of autonomous UV-C disinfection robotics, we conducted two comprehensive state-of-the-art analyses: the first one in the literature and the second one in existing commercial disinfection robots to identify current challenges. Of all of the challenges, we consider the most outstanding ones to be safeguarding humans and animals and understanding the surroundings while operating the disinfection process challenges that we will address in this article. While UV-C lamps have demonstrated their effectiveness in sterilizing air and surfaces, the field of autonomous UV-C disinfection robotics represents a critical domain that requires advancement, particularly in safeguarding the wellbeing of humans and animals during operation. Operating UV-C disinfection robots in close proximity to humans or animals introduces inherent risks, and existing disinfection robots often fall short in incorporating advanced safety systems. In response to these challenges, we propose the RoboCoV Cleaner-an indoor autonomous UV-C disinfection robot equipped with an advanced dual and redundant safety system. This novel approach incorporates multiple passive infrared (PIR) sensors and AI object detection on a 360-degree camera. Under our test, the dual-redundant system reached more than 90% when detecting humans with high accuracy using the AI system 99% up to 30 m away in a university hallway (different light conditions) combined with the PIR system (with lower accuracy). The PIR system was proved to be a redundant system for uninterrupted operation during communication challenges, ensuring continuous sensor information collection with a swift response time of 50 ms (image processing within 200 ms). It empowers the robot to detect and react to human presence, even under challenging conditions, such as when individuals wear masks, in complete darkness, under UV light, or in environments with blurred visual conditions. In our test, the detection system performed outstandingly well with up to 99% detection rate of humans. Beyond safety features, the RoboCoV Cleaner can identify objects in its surroundings. This capability empowers the robot to discern objects affected by UV-C light, enabling it to apply specialized rules for targeted disinfection. The proposed system exhibits a wide range of capabilities beyond its core purpose of disinfection, making it suitable for healthcare facilities, universities, conference venues, and hospitals. Its implementation has the ability to improve significantly human safety and protect people. By showcasing the RoboCoV Cleaner's safety-first approach and adaptability, we aim to set a new benchmark for UV-C disinfection robots, promoting clean and secure environments while protecting vulnerable people, even in challenging scenarios.
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Affiliation(s)
- Dragoș-Vasile Bratu
- Department of Automatics and Information Technology, Transilvania University of Brasov, 500036 Brașov, Romania
| | - Maria-Alexandra Zolya
- Department of Automatics and Information Technology, Transilvania University of Brasov, 500036 Brașov, Romania
| | - Sorin-Aurel Moraru
- Department of Automatics and Information Technology, Transilvania University of Brasov, 500036 Brașov, Romania
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207
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Hasan M, Reyer H, Oster M, Trakooljul N, Ponsuksilli S, Magowan E, Fischer DC, Wimmers K. Exposure to artificial ultraviolet-B light mediates alterations on the hepatic transcriptome and vitamin D metabolism in pigs. J Steroid Biochem Mol Biol 2024; 236:106428. [PMID: 37984748 DOI: 10.1016/j.jsbmb.2023.106428] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/28/2023] [Accepted: 11/17/2023] [Indexed: 11/22/2023]
Abstract
In the currently prevailing pig husbandry systems, the vitamin D status is almost exclusively dependent on dietary supply. Additional endogenous vitamin D production after exposure to ultraviolet-B (UVB) light might allow the animals to utilize minerals in a more efficient manner, as well as enable the production of functional vitamin D-enriched meat for human consumption. In this study, growing pigs (n = 16) were subjected to a control group or to a daily narrowband UVB exposure of 1 standard erythema dose (SED) for a period of 9 weeks until slaughter at a body weight of 105 kg. Transcriptomic profiling of liver with emphasis on the associated effects on vitamin D metabolism due to UVB exposure were evaluated via RNA sequencing. Serum was analyzed for vitamin D status and health parameters such as minerals and biochemical markers. The serum concentration of calcidiol, but not calcitriol, was significantly elevated in response to UVB exposure after 17 days on trial. No effects of UVB exposure were observed on growth performance and blood test results. At slaughter, the RNA sequencing analyses following daily UVB exposure revealed 703 differentially expressed genes (DEGs) in liver tissue (adjusted p-value < 0.01). Results showed that molecular pathways for vitamin D synthesis (CYP2R1) rather than cholesterol synthesis (DHCR7) were preferentially initiated in liver. Gene enrichment (p < 0.05) was observed for reduced cholesterol/steroid biosynthesis, SNARE interactions in vesicular transport, and CDC42 signaling. Taken together, dietary vitamin D supply can be complemented via endogenous production after UVB exposure in pig husbandry, which could be considered in the development of functional foods.
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Affiliation(s)
- Maruf Hasan
- Research Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Henry Reyer
- Research Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Michael Oster
- Research Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Nares Trakooljul
- Research Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | | | - Elizabeth Magowan
- Agri-Food and Biosciences Institute, Large Park, Hillsborough, Co Down, BT26 6DR, United Kingdom
| | - Dagmar-Christiane Fischer
- Department of Pediatrics, Rostock University Medical Center, Ernst-Heydemann-Str. 8, 18057 Rostock, Germany
| | - Klaus Wimmers
- Research Institute for Farm Animal Biology (FBN), Dummerstorf, Germany; Faculty of Agricultural and Environmental Sciences, University Rostock, Rostock, Germany.
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208
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Chełminiak-Dudkiewicz D, Smolarkiewicz-Wyczachowski A, Ziegler-Borowska M, Kaczmarek H. Photochemical stability of chitosan films doped with cannabis oil. J Photochem Photobiol B 2024; 251:112850. [PMID: 38277961 DOI: 10.1016/j.jphotobiol.2024.112850] [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: 11/11/2023] [Revised: 01/03/2024] [Accepted: 01/22/2024] [Indexed: 01/28/2024]
Abstract
The effect of UV radiation from three different sources on chitosan (CS) films containing the addition of 10% by weight of cannabis oil was investigated. Cannabis oil (CBD) alone exposed to UV is unstable, but its photostability significantly increases in the chitosan matrix. The course of photochemical reactions, studied by FTIR spectroscopy, is slow and inefficient in chitosan with CBD, even under high-energy UV sources. The research also included chitosan films with CBD cross-linked with dialdehyde starch (DAS). Using AFM microscopy and contact angle measurements, the morphology and surface properties of prepared chitosan films with CBD were investigated, respectively. It was found that CBD embedded in CS is characterized by the best photostability under the influence of an LED emitting long-wave radiation. Using a monochromatic and polychromatic UV lamp (HPK and UV-C) emitting high-energy radiation, gradual degradation accompanied by oxidation was observed, both in the CS chains and in the CBD additive. Additionally, changes in surface properties are observed during UV irradiation. It was concluded that CS protects CBD against photodegradation, and a further improvement in photochemical stability is achieved after system cross-linking with DAS.
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Affiliation(s)
| | | | - Marta Ziegler-Borowska
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
| | - Halina Kaczmarek
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
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209
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Zheng Y, Xiao Z, Lin Y, Fang Z, Liu D, Lin Z, Zhang Q, Chen P, Zhang Z, Xv L, Lv W, Liu G. Degradation of sulfonamide antibiotic via UV/MgO 2 system: kinetic, application, and mechanism. Environ Sci Pollut Res Int 2024; 31:14239-14253. [PMID: 38273083 DOI: 10.1007/s11356-024-32079-6] [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: 05/11/2023] [Accepted: 01/15/2024] [Indexed: 01/27/2024]
Abstract
In response to antibiotic residues in the water, a novel advanced oxidation technology based on MgO2 was used to remediate sulfamethazine (SMTZ) pollution in aquatic environments. Upon appropriate regulation, the remarkable removal efficiency of SMTZ was observed in a UV/MgO2 system, and the pseudo-first-order reaction constant reached 0.4074 min-1. In addition, the better performance of the UV/MgO2 system in a weak acid environment was discovered. During the removal of SMTZ, the pathways of SMTZ degradation were deduced, including nitration, ring opening, and group loss. In the mineralization exploration, the further removal of residual products of SMTZ by the UV/MgO2 system was visually demonstrated. The qualitative and quantitative researches as well as the roles of reactive species were valuated, which revealed the important role of ·O2-. Common co-existing substances in actual wastewater such as NO3- HA, Cl-, Fe2+, Co2+, and Mn2+ can slightly inhibit the degradation of SMTZ in the UV/MgO2 system. Finally, the capacity of efficient degradation of SMTZ in actual wastewater by the UV/MgO2 system was proved. The results indicated that the innovative UV/MgO2 system was of great practical application prospect in antibiotic residue wastewater remediation.
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Affiliation(s)
- Yixun Zheng
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Zhenjun Xiao
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yijie Lin
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Zheng Fang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Deyang Liu
- School of Foreign Languages, Guangdong University of Technology, Guangzhou, 510006, China
| | - Zifeng Lin
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Qianxin Zhang
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Ping Chen
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Zhenheng Zhang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Lu Xv
- School of Art & Design, Guangdong University of Technology, Guangzhou, 510006, China
| | - Wenying Lv
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Guoguang Liu
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
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Rufyikiri AS, Martinez R, Addo PW, Wu BS, Yousefi M, Malo D, Orsat V, Vidal SM, Fritz JH, MacPherson S, Lefsrud M. Germicidal efficacy of continuous and pulsed ultraviolet-C radiation on pathogen models and SARS-CoV-2. Photochem Photobiol Sci 2024; 23:339-354. [PMID: 38308169 DOI: 10.1007/s43630-023-00521-2] [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: 07/14/2023] [Accepted: 12/12/2023] [Indexed: 02/04/2024]
Abstract
Ultraviolet radiation's germicidal efficacy depends on several parameters, including wavelength, radiant exposure, microbial physiology, biological matrices, and surfaces. In this work, several ultraviolet radiation sources (a low-pressure mercury lamp, a KrCl excimer, and four UV LEDs) emitting continuous or pulsed irradiation were compared. The greatest log reductions in E. coli cells and B. subtilis endospores were 4.1 ± 0.2 (18 mJ cm-2) and 4.5 ± 0.1 (42 mJ cm-2) with continuous 222 nm, respectively. The highest MS2 log reduction observed was 2.7 ± 0.1 (277 nm at 3809 mJ cm-2). Log reductions of SARS-CoV-2 with continuous 222 nm and 277 nm were ≥ 3.4 ± 0.7, with 13.3 mJ cm-2 and 60 mJ cm-2, respectively. There was no statistical difference between continuous and pulsed irradiation (0.83-16.7% [222 nm and 277 nm] or 0.83-20% [280 nm] duty rates) on E. coli inactivation. Pulsed 260 nm radiation (0.5% duty rate) at 260 nm yielded significantly greater log reduction for both bacteria than continuous 260 nm radiation. There was no statistical difference in SARS-CoV-2 inactivation between continuous and pulsed 222 nm UV-C radiation and pulsed 277 nm radiation demonstrated greater germicidal efficacy than continuous 277 nm radiation. Greater radiant exposure for all radiation sources was required to inactivate MS2 bacteriophage. Findings demonstrate that pulsed irradiation could be more useful than continuous UV radiation in human-occupied spaces, but threshold limit values should be respected. Pathogen-specific sensitivities, experimental setup, and quantification methods for determining germicidal efficacy remain important factors when optimizing ultraviolet radiation for surface decontamination or other applications.
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Affiliation(s)
- Anne Sophie Rufyikiri
- Department of Bioresource Engineering, Macdonald Campus, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Rebecca Martinez
- Department of Bioresource Engineering, Macdonald Campus, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Philip W Addo
- Department of Bioresource Engineering, Macdonald Campus, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Bo-Sen Wu
- Department of Bioresource Engineering, Macdonald Campus, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Mitra Yousefi
- Dahdaleh Institute of Genomic Medicine and McGill University Research Centre on Complex Traits, Life Sciences Complex, McGill University, 3649 Promenade Sir William Osler, Montreal, QC, H3G 0B1, Canada
| | - Danielle Malo
- Dahdaleh Institute of Genomic Medicine and McGill University Research Centre on Complex Traits, Life Sciences Complex, McGill University, 3649 Promenade Sir William Osler, Montreal, QC, H3G 0B1, Canada
- Department of Medicine, McGill University, 3649 Promenade Sir William Osler, Montreal, QC, H3G 0B1, Canada
- Department of Human Genetics, McGill University, 3649 Promenade Sir William Osler, Montreal, QC, H3G 0B1, Canada
| | - Valérie Orsat
- Department of Bioresource Engineering, Macdonald Campus, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Silvia M Vidal
- Dahdaleh Institute of Genomic Medicine and McGill University Research Centre on Complex Traits, Life Sciences Complex, McGill University, 3649 Promenade Sir William Osler, Montreal, QC, H3G 0B1, Canada
- Department of Human Genetics, McGill University, 3649 Promenade Sir William Osler, Montreal, QC, H3G 0B1, Canada
- Department of Microbiology and Immunology, McGill University, 3775 Rue University, Montreal, QC, H3A 2B4, Canada
| | - Jörg H Fritz
- Dahdaleh Institute of Genomic Medicine and McGill University Research Centre on Complex Traits, Life Sciences Complex, McGill University, 3649 Promenade Sir William Osler, Montreal, QC, H3G 0B1, Canada
- Department of Microbiology and Immunology, McGill University, 3775 Rue University, Montreal, QC, H3A 2B4, Canada
| | - Sarah MacPherson
- Department of Bioresource Engineering, Macdonald Campus, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Mark Lefsrud
- Department of Bioresource Engineering, Macdonald Campus, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC, H9X 3V9, Canada.
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211
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Singh AP, Gupta A, Singh PR, Jaiswal J, Sinha RP. Synergistic effects of salt and ultraviolet radiation on the rice-field cyanobacterium Nostochopsis lobatus HKAR-21. Photochem Photobiol Sci 2024; 23:285-302. [PMID: 38143251 DOI: 10.1007/s43630-023-00517-y] [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: 07/10/2023] [Accepted: 11/23/2023] [Indexed: 12/26/2023]
Abstract
Environmental variation has a significant impact on how organisms, including cyanobacteria, respond physiologically and biochemically. Salinity and ultraviolet radiation (UVR)-induced variations in the photopigments of the rice-field cyanobacterium Nostochopsis lobatus HKAR-21 and its photosynthetic performance was studied. We observed that excessive energy dissipation after UVR is mostly caused by Non-Photochemical Quenching (NPQ), whereas photochemical quenching is important for preventing photoinhibition. These findings suggest that ROS production may play an important role in the UVR-induced injury. To reduce ROS-induced oxidative stress, Nostochopsis lobatus HKAR-21 induces the effective antioxidant systems, which includes different antioxidant compounds like carotenoids and enzymes such as superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX). The study indicates that Nostochopsis lobatus HKAR-21 exposed to photosynthetically active radiation + UV-A + UV-B (PAB) and PAB + NaCl (PABN) had significantly reduced photosynthetic efficiency. Furthermore, maximum ROS was detected in PAB exposed cyanobacterial cells. The induction of lipid peroxidation (LPO) has been investigated to evaluate the impact of UVR on the cyanobacterial membrane in addition to enzymatic defensive systems. The maximal LPO level was found in PABN treated cells. Based on the findings of this research, it was concluded that salinity and UVR had collegial effects on the major macromolecular components of the rice-field cyanobacterium Nostochopsis lobatus HKAR-21.
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Affiliation(s)
- Ashish P Singh
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Amit Gupta
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Prashant R Singh
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Jyoti Jaiswal
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Rajeshwar P Sinha
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
- University Center for Research & Development (UCRD), Chandigarh University, Chandigarh, India.
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212
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Sarkhoshkalat M, Nasab MA, Yari MR, Tabatabaee SS, Ghavami V, Joulaei F, Sarkhosh M. Assessment of UV radiation effects on airborne mucormycetes and bacterial populations in a hospital environment. Sci Rep 2024; 14:2708. [PMID: 38302627 PMCID: PMC10834397 DOI: 10.1038/s41598-024-53100-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 01/27/2024] [Indexed: 02/03/2024] Open
Abstract
Infections, such as mucormycosis, often result from inhaling sporangiospore present in the environment. Surprisingly, the extent of airborne Mucormycetes sporangiospore concentrations remains inadequately explored. This study aimed to assess the influence of UV radiation on microbial populations and Mucormycetes spore levels within a hospital environment in northern Iran. A comprehensive dataset comprising 298 air samples collected from both indoor and outdoor settings was compiled. The culture was conducted using Blood Agar and Dichloran Rose Bengal Chloramphenicol (DRBC) culture media, with Chloramphenicol included for fungal agents and Blood Agar for bacterial. Before UV treatment, the average count of Mucormycetes ranged from 0 to 26.4 ± 25.28 CFU m-3, fungal agents from 2.24 ± 3.22 to 117.24 ± 27.6 CFU m-3, and bacterial agents from 29.03 ± 9.9 to 359.37 ± 68.50 CFU m-3. Following UV irradiation, the averages were as follows: Mucormycetes ranged from 0 to 7.85 ± 6.8 CFU m-3, fungal agents from 16.58 ± 4.79 to 154.98 ± 28.35 CFU m-3, and bacterial agents from 0.38 ± 0.65 to 43.92 ± 6.50 CFU m-3. This study, notably marks the pioneering use of UV light to mitigate Mucormycetes spore counts and bacterial agents in northeastern Iran, contributing to the advancement of environmental health and safety practices in hospital settings.
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Affiliation(s)
| | - Mahdi Ahmadi Nasab
- Student Research Committee, Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Reza Yari
- Student Research Committee, Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Saeed Tabatabaee
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
- Department of Management Sciences and Health Economics, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Vahid Ghavami
- Department of Biostatistics, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Joulaei
- Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Sarkhosh
- Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran.
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213
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Watson TPG, Tong M, Bailie J, Ekanayake K, Bailie RS. Relationship between climate change and skin cancer and implications for prevention and management: a scoping review. Public Health 2024; 227:243-249. [PMID: 38262229 DOI: 10.1016/j.puhe.2023.12.003] [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: 09/01/2023] [Revised: 11/04/2023] [Accepted: 12/02/2023] [Indexed: 01/25/2024]
Abstract
OBJECTIVES This study aimed to explore the published research on the relationship between climate change and skin cancer and the implications for prevention, management and further research. STUDY DESIGN Scoping review. METHODS This scoping review following JBI methodology reviewed English articles identified in searches of MEDLINE, Embase, CINAHL, Web of Science and Scopus on 14 April 2023. The screening of articles was completed by two independent reviewers. Data were extracted by a single reviewer and checked by another. A causal pathway diagram was iteratively developed throughout the review and was used to categorise the findings. RESULTS The search identified 1376 papers, of which 45 were included in the final review. Nine papers reported primary research, and 36 papers were reviews, perspectives, commentaries, editorials, or essays. The papers examined climate change influencing behaviours related to ultraviolet exposure (30 papers), ambient temperature (21 papers) and air pollution (five papers) as possible risk factors; occupational, rural, and contextual factors affecting skin cancer (11 papers); and prevention and access to health care in the context of climate change (seven papers). Most papers were published in journals in subject areas other than health. CONCLUSIONS This review identified ultraviolet radiation, occupation, rising temperature, individual behaviour and air pollution as possible influences on skin cancer rates. Furthermore, it highlights the complexity and uncertainties in the relationship between climate change and skin cancer and the need for further research on this relationship, including primary epidemiological research and reviews that follow recognised review guidelines and include assessment of health services and social determinants in the causal pathways of this relationship.
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Affiliation(s)
- T P G Watson
- Sydney Medical School, The University of Sydney, Camperdown, New South Wales, 2050, Australia; University Centre for Rural Health, The University of Sydney, Lismore, New South Wales, 2480, Australia
| | - M Tong
- National Centre for Epidemiology and Population Health, The Australian National University, Canberra, Australian Capital Territory, 2601, Australia
| | - J Bailie
- University Centre for Rural Health, The University of Sydney, Lismore, New South Wales, 2480, Australia; School of Public Health, The University of Sydney, Camperdown, New South Wales, 2050, Australia
| | - K Ekanayake
- University of Sydney Library, The University of Sydney, Camperdown, New South Wales, 2050, Australia
| | - R S Bailie
- School of Public Health, The University of Sydney, Camperdown, New South Wales, 2050, Australia.
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214
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Akhtar S, Smedowski A, Khan AA, Debasi H, Mofty H, Samivel R, Almubrad T. Glycosaminoglycans and collagen fibril distribution at various depths of the corneal stroma of normal and CXL treated rats. Exp Eye Res 2024; 239:109780. [PMID: 38176513 DOI: 10.1016/j.exer.2024.109780] [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: 10/13/2023] [Revised: 11/21/2023] [Accepted: 01/01/2024] [Indexed: 01/06/2024]
Abstract
Corneal collagen cross-linking (CXL) is widely used to treat keratoconus and ecstatic corneal disorders. The present studies were carried out to investigate the distribution of glycosaminoglycans (GAGs) and collagen fibril (CF) at different depths of the normal and CXL treated corneal stroma of four week old rats 7 days after standard CXL application. Ten Wistar rats' corneas were used for the study. The epithelium of the cornea from the left eye of each rat was removed and treated with standard CXL application using riboflavin and Ultraviolet-A (UVA) (3 mW/cm2 for 30 min). The cornea from the right eye was used as the control cornea. The cornea was removed from the eye and processed for transmission electron microscopy. A bottom mounted Quemesa camera was used to capture digital images and these images were analysed using iTEM software. In the control cornea, the GAGs area size was not significantly different in the anterior, middle, and posterior stroma. In the CXL treated rats the GAGs area size gradually increased from the anterior to the posterior stroma whereas the spacing between the GAGs gradually decreased. There were very large GAGs present in the posterior stroma of the CXL treated rats. When comparing the control and CXL cornea, the GAGs area in the CXL cornea was significantly higher and inter-GAGs-spacing was smaller than in the control cornea. In the control cornea, the collagen fibrils diameter was higher in the anterior stroma and lowest in the posterior stroma. In the CXL treated cornea, the CF diameter and the interfibrillar spacing gradually decreased from the anterior to the posterior stroma. On comparison between the control and the CXL treated cornea, the interfibrillar spacing was significantly smaller in the CXL treated cornea than the control cornea in the anterior, middle, and posterior stroma but there was no difference in the diameter. The CXL treatment significantly increased the GAGs area and decreased the inter-GAGs-spacing, and inter-CF-spacing. This could be due to the gradual decline in the availability of riboflavin, UVA, and oxygen in the middle and posterior stroma. Further studies are required to investigate the role of keratan sulphate and chondroitin sulphate by using monoclonal antibodies with immunogold technique.
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Affiliation(s)
- Saeed Akhtar
- College of Applied Medical Sciences, Inaya Medical College, Riyadh, Saudi Arabia; Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
| | - Adrian Smedowski
- Department of Ophthalmology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland; Department of Ophthalmology, Professor K. Gibinski University Clinical Center, Medical University of Silesia, Katowice, Poland; GlaucoTech Co, Katowice, Poland
| | - Adnan Ali Khan
- Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Hind Debasi
- Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia; Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Hanan Mofty
- Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia; Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ramachandran Samivel
- Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Turki Almubrad
- Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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215
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Chen S, Sheng X, Zhao Z, Cui F. Chemical-free vacuum ultraviolet irradiation as ultrafiltration membrane pretreatment technique: Performance, mechanisms and DBPs formation. J Environ Manage 2024; 351:119785. [PMID: 38081086 DOI: 10.1016/j.jenvman.2023.119785] [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: 07/09/2023] [Revised: 11/28/2023] [Accepted: 12/03/2023] [Indexed: 01/14/2024]
Abstract
Membrane fouling induced by natural organic matter (NOM) has seriously affected the further extensive application of ultrafiltration (UF). Herein, a simple, green and robust vacuum ultraviolet (VUV) technology was adopted as pretreatment before UF and ultraviolet (UV) technology was used for comparison. The results showed that control effect of VUV pretreatment on membrane fouling was better than that of UV pretreatment, as evidenced by the increase of normalized flux from 0.27 to 0.38 and 0.73 after 30 min UV or VUV pretreatment, respectively. This is related to the fact that VUV pretreatment exhibited stronger NOM degradation ability than UV pretreatment owing to the formation of HO•. The steady-state concentration of HO• was calculated as 3.04 × 10-13 M and the cumulative exposure of HO• reached 5.52 × 10-10 M s after 30 min of VUV irradiation. And the second-order rate constant between NOM and HO• was determined as 1.36 × 104 L mg-1 s-1. Furthermore, fluorescence EEM could be applied to predict membrane fouling induced by humic-enriched water. Standard blocking and cake filtration were major fouling mechanisms. Moreover, extension of UV pretreatment time increased the disinfection by-products (DBPs) formation, the DBPs concentration was enhanced from 322.36 to 1187.80 μg/L after 210 min pretreatment. However, VUV pretreatment for 150 min reduced DBPs content to 282.57 μg/L, and DBPs content continued to decrease with the extension of pretreatment time, revealing that VUV pretreatment achieved effective control of DBPs. The variation trend of cytotoxicity and health risk of DBPs was similar to that of DBPs concentration. In summary, VUV pretreatment exhibited excellent effect on membrane fouling alleviation, NOM degradation and DBPs control under a certain pretreatment time.
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Affiliation(s)
- Shengnan Chen
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, PR China
| | - Xin Sheng
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, PR China
| | - Zhiwei Zhao
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, PR China.
| | - Fuyi Cui
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, PR China
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216
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Tanaka K, Ozawa R, Takabayashi J, Ochiai M, Hayakawa Y. Booklice Liposcelis bostrychophila are efficiently attracted by the combination of 2,3,5,6-tetramethylpyrazine and ultraviolet light. Pest Manag Sci 2024; 80:426-432. [PMID: 37714819 DOI: 10.1002/ps.7773] [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: 06/21/2023] [Revised: 09/09/2023] [Accepted: 09/13/2023] [Indexed: 09/17/2023]
Abstract
BACKGROUND Booklice Liposcelis bostrychophila are frequently found almost everywhere, including private houses and cleanrooms of factories and institutes. They often cause serious hygienic as well as agricultural problems, but a useful trap has not been developed so far. Therefore, an effective way to monitor and capture booklice is required. RESULTS We here identified a new attractant, 2,3,5,6-tetramethylpyrazine (TMP), which efficiently captured booklice in combination with UV light. When booklice placed at both right and left edges of an assay tray were exposed to light stimulus from the center, test insects gathered at the center. The attraction was stronger with shorter wavelengths than longer ones: 365-nm ultraviolet (UV) light showed the strongest attraction of four tested light wavelengths. We found that cocoa powder attracted booklice weakly but significantly under total darkness. Furthermore, the cocoa smell was confirmed to enhance the attraction to light at all tested wavelengths irrespective of the difference between two brands of cocoa powders. Gas chromatography-mass spectrometry indicated that both cocoa products contain TMP as a major odor compound. Exposure of booklice to TMP significantly enhanced the attraction to UV light: the combined use with TMP almost doubled the attraction compared to the light only. By contrast, TMP homologs, pyrazine and dimethylpyrazines, showed strong repellent activities under UV light exposure. CONCLUSION TMP enhanced the UV light attraction for booklice while pyrazine and dimethylpyrazines diminished it. Use of these attractant and repellent pyrazine derivatives together with UV light would enable us to develop a practical new way to monitor and capture booklice. © 2023 Society of Chemical Industry.
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Affiliation(s)
| | - Rika Ozawa
- Center for Ecological Research, Kyoto University, Otsu, Japan
| | | | - Masanori Ochiai
- Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan
| | - Yoichi Hayakawa
- Fuji Environmental Services, Inc., Shizuoka, Japan
- Department of Applied Biological Sciences, Saga University, Saga, Japan
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217
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Ataee E, Shirkhoda M, Nahvijou A, Shahmoradi L, Ramezanghorbani N. Determining the Content of a Melanoma Prevention and Care Mobile Application for Melanoma Patients: A Survey Study. Asian Pac J Cancer Prev 2024; 25:409-418. [PMID: 38415525 DOI: 10.31557/apjcp.2024.25.2.409] [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: 04/11/2023] [Indexed: 02/29/2024] Open
Abstract
OBJECTS Skin cancer is one of the most common cancers and melanoma is the deadliest type of skin cancer. Since the Mobile based health interventions have significant effects in the management of diseases. This study aimed to determining the content of melanoma prevention and care application. METHODS This is a descriptive study that was conducted in three stages. at first, in order to identify the features of the application, search was conducted based on PubMed, Google Scholar ، Scopus databases. In the second step, in order to determine the content of information, articles and guidelines related to melanoma were searched. In the third stage, in order to ensure the validity of researcher-made questionnaire, a survey was conducted by 51 experts based on targeted sampling. The collected data were analyzed. RESULTS demographic and clinical information and melanoma prevention training was common in 14 reviewed applications; The possibility of sending reminders for patients was less considered. Most of the articles have paid attention to the data elements: age, gender, history of sunburn, skin color and history of cancer, exposure to ultraviolet rays, how to care for the skin. The content of the melanoma prevention and care application consists of three general sections: 1- Demographic, clinical information and melanoma risk factors; 2- Educational needs; 3- Features and capabilities of the application for prevention and care were formed. The results of the expert survey showed that 81% of the section1, 80% of the section2, and 91% of the section3 were approved. CONCLUSIONS Mobile applications has an effective role in disease management and accelerating the provision of health services and reducing the costs of providing services. Melanoma prevention and care application can be an aid in patient education and ultimately better disease management in the field of prevention and care during the current crisis.
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Affiliation(s)
- Elham Ataee
- Department of Health Information Management, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Shirkhoda
- Department of General Oncology, Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran
| | - Azin Nahvijou
- Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran
| | - Leila Shahmoradi
- Department of Health Information Management, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Nahid Ramezanghorbani
- Department of Development and Coordination Scientific Information and Publications, Deputy of Research and Technology, Ministry of Health and Medical Education, Tehran, Iran
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Rodrigues RB, de Oliveira MM, Garcia FP, Ueda-Nakamura T, de Oliveira Silva S, Nakamura CV. Dithiothreitol reduces oxidative stress and necrosis caused by ultraviolet A radiation in L929 fibroblasts. Photochem Photobiol Sci 2024; 23:271-284. [PMID: 38305951 DOI: 10.1007/s43630-023-00516-z] [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: 07/03/2023] [Accepted: 11/23/2023] [Indexed: 02/03/2024]
Abstract
Ultraviolet A (UVA) radiation, present in sunlight, can induce cell redox imbalance leading to cellular damage and even cell death, compromising skin health. Here, we evaluated the in vitro antioxidant and photochemoprotective effect of dithiothreitol (DTT). DTT neutralized the free radicals 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS·+), 2,2-diphenyl-1-picrylhydrazyl (DPPH·), and superoxide anion (O2·-) in in vitro assays, as well as the ferric ion (Fe3+) in the ferric reducing antioxidant power (FRAP) assay. We also evaluated the effect of DTT pre-treatment in L929 dermal fibroblasts and DTT (50 and 100 µM) led to greater cell viability following UVA-irradiation compared to cells that were untreated. Furthermore, the pre-treatment of cells with DTT prevented the increase of intracellular reactive oxygen species (ROS) production, including hydrogen peroxide (H2O2), lipid peroxidation, and DNA condensation, as well as the decrease in mitochondrial membrane potential (Δψm), that occurred following irradiation in untreated cells. The endogenous antioxidant system of cells was also improved in irradiated cells that were DTT pre-treated compared to the untreated cells, as the activity of the superoxide dismutase (SOD) and catalase (CAT) enzymes remained as high as non-irradiated cells, while the activity levels were depleted in the untreated irradiated cells. Furthermore, DTT reduced necrosis in UVA-irradiated fibroblasts. Together, these results showed that DTT may have promising use in the prevention of skin photoaging and photodamage induced by UVA, as it provided photochemoprotection against the harmful effects of this radiation, reducing oxidative stress and cell death, due mainly to its antioxidant capacity.
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Affiliation(s)
- Renata Bufollo Rodrigues
- Biological Sciences Post-graduation Program, Maringá State University, Av. Colombo, n. 5790, Zona 7, Maringá, Paraná, CEP 87020-900, Brazil
| | | | - Francielle Pelegrin Garcia
- Biological Sciences Post-graduation Program, Maringá State University, Av. Colombo, n. 5790, Zona 7, Maringá, Paraná, CEP 87020-900, Brazil
| | - Tânia Ueda-Nakamura
- Pharmaceutical Sciences Post-graduation Program, Maringá State University, Maringá, Brazil
| | | | - Celso Vataru Nakamura
- Biological Sciences Post-graduation Program, Maringá State University, Av. Colombo, n. 5790, Zona 7, Maringá, Paraná, CEP 87020-900, Brazil.
- Pharmaceutical Sciences Post-graduation Program, Maringá State University, Maringá, Brazil.
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AlFawaz YF. Antibacterial efficacy of NanoCare, Fullerene (C60) activated by UV light, and Morinda Oleifera against S.Mutans and bond integrity of composite resin to caries affected dentin. Photodiagnosis Photodyn Ther 2024; 45:103926. [PMID: 38065228 DOI: 10.1016/j.pdpdt.2023.103926] [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: 11/23/2023] [Revised: 11/29/2023] [Accepted: 12/06/2023] [Indexed: 12/29/2023]
Abstract
AIM Assessment of the impact of contemporary disinfection techniques Moringa Oleifera (M. Oleifera), NanoCare Plus Silver Gold® (Nanocare), and Fullerene (C60) on survival rates of S.Mutans and shear bond strength (SBS) of composite to the carious affected dentin (CAD) MATERIAL AND METHODS: Sixty mandibular molars having caries progression till the middle 1/3rd of the dentin were disinfected. The CAD surface of twenty samples was inoculated with S.mutans. Based on different disinfection regimens samples were arbitrarily assigned to four groups (n:15) Group 1: 2 % CHX, Group 2:NanoCare, Group 3:Fullerene (C60), and Group 4 (M. Oleifera. This was followed by calculating the survival rate of S.mutans. Ten samples from each group were then restored with composite restoration and thermocycled. Assessment of SBS and failure mode was performed using a universal testing machine and stereomicroscope at 40X magnification. Statistical significance among groups was assessed using analysis of variance (ANOVA) and Tukey's test at a significance level of p = 0.05 RESULTS: Group 2 samples treated with NanoCare exhibited the lowest survival rate (0.39 ± 0.02 CFU/ml) of S.Mutans. However, Group 1 (CHX) samples exhibited the highest survival count (0.51±0.10 CFU/ml). Furthermore, the highest composite to CAD bond was observed in Group 3 Fullerene(C60) (18.44±0.25 MPa) samples and the lowest SBS was observed in Group 1 (CHX) (12.48±1.69 MPa) CONCLUSION: Fullerene(C60) and Moringa Oleifera extract hold promise as potential substitutes for chlorhexidine (CHX) in clinical applications, offering the potential for improved S.Mutans elimination and enhanced bond strength to CAD surface.
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Affiliation(s)
- Yasser F AlFawaz
- Department of Restorative Dental Sciences, College of Dentistry, King Saud University, 60169, Riyadh 11545, Saudi Arabia.
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Fatima N, Yaqoob S, Rana S, Hameed A, Mirza MR, Jabeen A. In vitro photoprotective potential of aryl-sandwiched (thio)semicarbazones against UVA mediated cellular and DNA damage. J Photochem Photobiol B 2024; 251:112841. [PMID: 38194816 DOI: 10.1016/j.jphotobiol.2024.112841] [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: 08/16/2023] [Revised: 12/01/2023] [Accepted: 01/03/2024] [Indexed: 01/11/2024]
Abstract
The most prevalent solar ultraviolet radiation is ultraviolet-A (UVA) radiation. It is the inducer of reactive oxygen species (ROS), a potent mediator of inflammation and photocarcinogenesis. Regular application of sunscreens containing UVA filters is an effective preventive measure in mitigating the risk associated with the formation of dermal carcinoma. Therefore, the development of new photoprotective agents is of great need. The current work examined the in vitro photoprotection of the aryl-linked (thio)semicarbazone derivatives against UVA-mediated DNA damage, inflammation, reactive nitrogen species (RNS), and ROS. Except for the inflammatory cytokine assay, which was carried out on the human monocytic leukemia (THP-1) cell line, all tests were conducted on the human dermal fibroblast (BJ) cell line. In comparison to benzophenone (reference compound), the compound (2Z, 2'Z)-2,2'-(1,3-Phenylenebis (methanylylidene)) bis (hydrazine-1-carbothioamide) (DD-21) demonstrated considerable protection against UVA-induced damage. Compared to the UVA-irradiated control, DD-21 significantly decreased the levels of nitric oxide (NO) and ROS (p < 0.001). In the presence of DD-21, the release of UVA-induced pro-inflammatory cytokines, tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β), was also significantly reduced (p < 0.05). Moreover, it was observed that DD-21 protected the cells from UVA-mediated DNA strand breaks and also inhibited the formation of cyclobutane pyrimidine dimers (CPDs) upon comparison to the UVA-exposed control cells (p < 0.001). In conclusion, the findings of this study revealed that DD-21 exhibits remarkable photoprotective properties, thus demonstrating its potential as a candidate UVA filter.
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Affiliation(s)
- Noor Fatima
- Molecular Biology and Human Genetics Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi 75270, Pakistan
| | - Sana Yaqoob
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Sobia Rana
- Molecular Biology and Human Genetics Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi 75270, Pakistan.
| | - Abdul Hameed
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan; Department of Chemistry, University of Sahiwal, Sahiwal, Pakistan
| | - Munazza Raza Mirza
- Molecular Biology and Human Genetics Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi 75270, Pakistan
| | - Almas Jabeen
- Molecular Biology and Human Genetics Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi 75270, Pakistan
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Wang K, Liu K, Dai L, Si C. Bioinspired multiscale cellulose/lignin-silver composite films with robust mechanical, antioxidant and antibacterial properties for ultraviolet shielding. Int J Biol Macromol 2024; 258:129046. [PMID: 38154714 DOI: 10.1016/j.ijbiomac.2023.129046] [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: 09/28/2023] [Revised: 12/19/2023] [Accepted: 12/23/2023] [Indexed: 12/30/2023]
Abstract
Constructing a high-performance ultraviolet shielding film is an effective way for addressing the growing problem of ultraviolet radiation. However, it is still a great challenge to achieve a combination of multifunctional, excellent mechanical properties and low cost. Here, inspired by the multiscale structure of biomaterials and features of lignin, a multifunctional composite film (CNF/CMF/Lig-Ag) is constructed via a facile vacuum-filtration method by introducing micron-sized cellulose fibers (CMF) and lignin-silver nanoparticles (Lig-Ag NPs) into the cellulose nanofibers (CNF) film network. In this composite film, the microfibers interweave with nanofibers to form a multiscale three-dimensional network, which ensures satisfactory mechanical properties of the composite film. Meanwhile, the Lig-Ag NPs are employed as a multifunctional filler to enhance the composite film's antioxidant, antibacterial and ultraviolet shielding abilities. As a result, the prepared CNF/CMF/Lig-Ag composite film demonstrates excellent mechanical properties (with tensile strength of 133.8 MPa and fracture strain of 7.4 %), good biocompatibility, high thermal stability, potent antioxidant and antibacterial properties. More importantly, such composite film achieves a high ultraviolet shielding rate of 98.2 % for ultraviolet radiation A (UVA) and 99.4 % for ultraviolet radiation B (UVB), respectively. Therefore, the prepared CNF/CMF/Lig-Ag composite film shows great potential in application of ultraviolet protection.
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Affiliation(s)
- Kuien Wang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; Department of Military Sick and Wounded Administration, No 983 Hospital of Chinese People's Liberation Army, Tianjin 300457, China
| | - Kefeng Liu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Lin Dai
- Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Chuanling Si
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
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Wang VA, Leung M, Liu M, Modest AM, Hacker MR, Gupta M, Zilli Vieira CL, Weisskopf MG, Schwartz J, Coull BA, Papatheodorou S, Koutrakis P. Association between gestational exposure to solar activity and pregnancy loss using live births from a Massachusetts-based medical center. Environ Res 2024; 242:117742. [PMID: 38007077 PMCID: PMC10843533 DOI: 10.1016/j.envres.2023.117742] [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: 07/18/2023] [Revised: 11/16/2023] [Accepted: 11/18/2023] [Indexed: 11/27/2023]
Abstract
BACKGROUND Solar activity has been linked to biological mechanisms important to pregnancy, including folate and melatonin levels and inflammatory markers. Thus, we aimed to investigate the association between gestational solar activity and pregnancy loss. METHODS Our study included 71,963 singleton births conceived in 2002-2016 and delivered at an academic medical center in Eastern Massachusetts. We studied several solar activity metrics, including sunspot number, Kp index, and ultraviolet radiation, with data from the NASA Goddard Space Flight Center and European Centre for Medium-Range Weather Forecasts. We used a novel time series analytic approach to investigate associations between each metric from conception through 24 weeks of gestation and the number of live birth-identified conceptions (LBICs) -the total number of conceptions in each week that result in a live birth. This approach fits distributed lag models to data on LBICs, adjusted for time trends, and allows us to infer associations between pregnancy exposure and pregnancy loss. RESULTS Overall, the association between solar activity during pregnancy and pregnancy loss varied by exposure metric. For sunspot number, we found that an interquartile range increase in sunspot number (78·7 sunspots) in all of the first 24 weeks of pregnancy was associated with 14·0 (95% CI: 6·5, 21·3) more pregnancy losses out of the average 92 LBICs in a week, and exposure in weeks ten through thirteen was identified as a critical window. Although not statistically significant, higher exposure to Kp index and to UV radiation across all 24 weeks of pregnancy was associated with more and less pregnancy losses, respectively. CONCLUSION While exposure to certain metrics of solar activity (i.e., sunspot number) throughout the first 24 weeks of pregnancy may be associated with pregnancy losses, exposure to other metrics were not. Solar activity is a complex phenomenon, and more studies are needed to clarify underlying pathways.
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Affiliation(s)
- Veronica A Wang
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Michael Leung
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Man Liu
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Anna M Modest
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Michele R Hacker
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Megha Gupta
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Carolina L Zilli Vieira
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Marc G Weisskopf
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Joel Schwartz
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Brent A Coull
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | | | - Petros Koutrakis
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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223
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Eregie SB, Sanusi IA, Kana GEB, Olaniran AO. Effect of ultra-violet light radiation on Scenedesmus vacuolatus growth kinetics, metabolic performance, and preliminary biodegradation study. Biodegradation 2024; 35:71-86. [PMID: 37052742 PMCID: PMC10774200 DOI: 10.1007/s10532-023-10029-2] [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: 10/13/2022] [Accepted: 03/24/2023] [Indexed: 04/14/2023]
Abstract
This study presents the effect of ultra-violet (UV) light radiation on the process kinetics, metabolic performance, and biodegradation capability of Scenedesmus vacuolatus. The impact of the UV radiation on S. vacuolatus morphology, chlorophyll, carotenoid, carbohydrates, proteins, lipid accumulation, growth rate, substrate affinity and substrate versatility were evaluated. Thereafter, a preliminary biodegradative potential of UV-exposed S. vacuolatus on spent coolant waste (SCW) was carried out based on dehydrogenase activity (DHA) and total petroleum hydrocarbon degradation (TPH). Pronounced structural changes were observed in S. vacuolatus exposed to UV radiation for 24 h compared to the 2, 4, 6, 12 and 48 h UV exposure. Exposure of S. vacuolatus to UV radiation improved cellular chlorophyll (chla = 1.89-fold, chlb = 2.02-fold), carotenoid (1.24-fold), carbohydrates (4.62-fold), proteins (1.44-fold) and lipid accumulations (1.40-fold). In addition, the 24 h UV exposed S. vacuolatus showed a significant increase in substrate affinity (1/Ks) (0.959), specific growth rate (µ) (0.024 h-1) and biomass accumulation (0.513 g/L) by 1.50, 2 and 1.9-fold respectively. Moreover, enhanced DHA (55%) and TPH (100%) degradation efficiency were observed in UV-exposed S. vacuolatus. These findings provided major insights into the use of UV radiation to enhance S. vacuolatus biodegradative performance towards sustainable green environment negating the use of expensive chemicals and other unfriendly environmental practices.
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Affiliation(s)
- Stella B Eregie
- School of Life Sciences, University of KwaZulu-Natal, Private Bag, X01, Scottsville 3209, Pietermaritzburg, South Africa.
| | - Isaac A Sanusi
- School of Life Sciences, University of KwaZulu-Natal, Private Bag, X01, Scottsville 3209, Pietermaritzburg, South Africa
- Fort Hare Institute of Technology, University of Fort Hare, Private Bag X1314, Alice, 5700, South Africa
| | - Gueguim E B Kana
- School of Life Sciences, University of KwaZulu-Natal, Private Bag, X01, Scottsville 3209, Pietermaritzburg, South Africa
| | - Ademola O Olaniran
- School of Life Sciences, University of KwaZulu-Natal, Westville Campus, Private Bag X54001, Pietermaritzburg, South Africa
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224
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Tanaka M, Yase J, Kanto T, Osakabe M. Combined nighttime ultraviolet B irradiation and phytoseiid mite application provide optimal control of the spider mite Tetranychus urticae on greenhouse strawberry plants. Pest Manag Sci 2024; 80:698-707. [PMID: 37759371 DOI: 10.1002/ps.7798] [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: 06/30/2023] [Revised: 09/11/2023] [Accepted: 09/28/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND Tetranychus urticae is a hard-to-control pest of greenhouse strawberry production. Nighttime ultraviolet B (UV-B) radiation using light reflection sheets (LRS) has been applied as a physical method to control T. urticae through direct ovicidal effects (the UV method). However, because strawberry leaves grow more densely, UV-B radiation fails to reach the lower leaf surfaces inhabited by spider mites; therefore, a complementary method is required. We propose the supplemental application of phytoseiid mites in greenhouse strawberry production. We evaluated the control effects of UV-B irradiation, phytoseiid mite application and their combined use. The effects of UV-B irradiation on the degree of overlap relative to the independent distributions (ω) between predators and prey were also analyzed. RESULTS The UV method alone maintained low T. urticae density levels from November to February; however, mite populations increased from March onward. Phytoseiid mite application in January and February without UV-B irradiation resulted in a temporary increase in spider mites in March and/or April. By contrast, combined application of the UV method and phytoseiid mites had a greater control effect during the strawberry growing season. The ω values were higher for the UV method compared with no UV-B irradiation, suggesting that UV-B irradiation increased phytoseiid mite foraging rates. CONCLUSION The release of phytoseiid mites compensated for the shortcomings of the UV method, and UV-B irradiation promoted predation by phytoseiid mites by increasing the behavioral numerical response. Consequently, combined application of UV-B irradiation and phytoseiid mites is optimal for T. urticae control in greenhouse strawberry production. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Masaya Tanaka
- Plant Protection Department, Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Hyogo, Japan
| | - Junya Yase
- Plant Protection Department, Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Hyogo, Japan
| | - Takeshi Kanto
- Plant Protection Department, Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Hyogo, Japan
| | - Masahiro Osakabe
- Laboratory of Ecological Information, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
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225
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Osipyan GA, Khraistin H, Jourieh M. Collagen cross-linking beyond corneal ectasia: A comprehensive review. Indian J Ophthalmol 2024; 72:S191-S202. [PMID: 38271415 DOI: 10.4103/ijo.ijo_1507_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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 11/19/2023] [Indexed: 01/27/2024] Open
Abstract
The history of corneal cross-linking (CXL) dates back to 2003 when some German scientists investigated possible treatments to harden the corneal structure to increase its resistance in ectatic corneal diseases. Nowadays, CXL is considered the most effective therapy in ectatic corneal diseases due to its proven efficacy in hardening the cornea, thus halting the development of the disease. Since 2003, CXL applications have dramatically expanded and have been implemented in several other areas such as infectious keratitis, corneal edema, and before performing keratoplasty for various purposes. Moreover, several irradiation patterns are being studied to correct refractive errors, taking into account the corneal refractive changes that occur after the procedure. Currently, scleral cross-linking is also being investigated as a potential therapy in cases of progressive myopia and glaucoma. In this article, we provide a comprehensive overview of the available applications of cross-linking in nonectatic ocular conditions and highlight the possible future indications of this procedure.
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Affiliation(s)
- Grigory A Osipyan
- Department of Corneal Pathology, Krasnov Research Institute of Eye Diseases, Moscow, Russia
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Niu Z, Curto M, Le Gall M, Demeyer E, Asselman J, Janssen CR, Dhakal HN, Davies P, Catarino AI, Everaert G. Accelerated fragmentation of two thermoplastics (polylactic acid and polypropylene) into microplastics after UV radiation and seawater immersion. Ecotoxicol Environ Saf 2024; 271:115981. [PMID: 38242046 DOI: 10.1016/j.ecoenv.2024.115981] [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: 09/22/2023] [Revised: 12/19/2023] [Accepted: 01/12/2024] [Indexed: 01/21/2024]
Abstract
To better understand the fate and assess the ingestible fraction of microplastics (by aquatic organisms), it is essential to quantify and characterize of their released from larger items under environmental realistic conditions. However, the current information on the fragmentation and size-based characteristics of released microplastics, for example from bio-based thermoplastics, is largely unknown. The goal of our work was to assess the fragmentation and release of microplastics, under ultraviolet (UV) radiation and in seawater, from polylactic acid (PLA) items, a bio-based polymer, and from polypropylene (PP) items, a petroleum-based polymer. To do so, we exposed pristine items of PLA and PP, immersed in filtered natural seawater, to accelerated UV radiation for 57 and 76 days, simulating 18 and 24 months of mean natural solar irradiance in Europe. Our results indicated that 76-day UV radiation induced the fragmentation of parent plastic items and the microplastics (50 - 5000 µm) formation from both PP and PLA items. The PP samples (48 ± 26 microplastics / cm2) released up to nine times more microplastics than PLA samples (5 ± 2 microplastics / cm2) after a 76-day UV exposure, implying that the PLA tested items had a lower fragmentation rate than PP. The particles' length of released microplastics was parameterized using a power law exponent (α), to assess their size distribution. The obtained α values were 3.04 ± 0.11 and 2.54 ± 0.06 (-) for 76-day UV weathered PP and PLA, respectively, meaning that PLA microplastics had a larger sized microplastics fraction than PP particles. With respect to their two-dimensional shape, PLA microplastics also had lower width-to-length ratio (0.51 ± 0.17) and greater fiber-shaped fractions (16%) than PP microplastics (0.57 ± 0.17% and 11%, respectively). Overall, the bio-based PLA items under study were more resistant to fragmentation and release of microplastics than the petroleum-based PP tested items, and the parameterized characteristics of released microplastics were polymer-dependent. Our work indicates that even though bio-based plastics may have a slower release of fragmented particles under UV radiation compared to conventional polymer types, they still have the potential to act as a source of microplastics in the marine environment, with particles being available to biota within ingestible size fractions, if not removed before major fragmentation processes.
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Affiliation(s)
- Zhiyue Niu
- Flanders Marine Institute (VLIZ), InnovOcean Campus, Jacobsenstraat 1, 8400 Oostende, Belgium; Blue Growth Research Lab, Ghent University, Bluebridge Building, Ostend Science Park 1, 8400 Ostend, Belgium.
| | - Marco Curto
- Advanced Polymers and Composites (APC) Research Group, School of mechanical and Design Engineering, University of Portsmouth, Portsmouth PO1 3DJ, UK
| | - Maelenn Le Gall
- Marine Structures Laboratory, IFREMER, Centre de Bretagne, 29280, France
| | - Elke Demeyer
- Functional Thermoplastic Textiles, Centexbel, Industriepark Zwijnaarde 70, 9052 Gent, Belgium
| | - Jana Asselman
- Blue Growth Research Lab, Ghent University, Bluebridge Building, Ostend Science Park 1, 8400 Ostend, Belgium
| | - Colin R Janssen
- Blue Growth Research Lab, Ghent University, Bluebridge Building, Ostend Science Park 1, 8400 Ostend, Belgium
| | - Hom Nath Dhakal
- Advanced Polymers and Composites (APC) Research Group, School of mechanical and Design Engineering, University of Portsmouth, Portsmouth PO1 3DJ, UK
| | - Peter Davies
- Marine Structures Laboratory, IFREMER, Centre de Bretagne, 29280, France
| | - Ana Isabel Catarino
- Flanders Marine Institute (VLIZ), InnovOcean Campus, Jacobsenstraat 1, 8400 Oostende, Belgium
| | - Gert Everaert
- Flanders Marine Institute (VLIZ), InnovOcean Campus, Jacobsenstraat 1, 8400 Oostende, Belgium
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227
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Bolomey AC, Cadnum JL, Jencson AL, Donskey CJ. Evaluation of a mobile disinfection cabinet using ultraviolet-C light and aerosolized hydrogen peroxide for disinfection of medical equipment. Infect Control Hosp Epidemiol 2024; 45:257-259. [PMID: 37767689 DOI: 10.1017/ice.2023.211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
In laboratory testing, a mobile enclosed disinfection cabinet using ultraviolet-C light and aerosolized hydrogen peroxide was effective for disinfection of hard and soft surfaces. The addition of aerosolized hydrogen peroxide to ultraviolet-C light resulted in improved disinfection of soft surfaces and Clostridioides difficile spores.
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Affiliation(s)
- Austin C Bolomey
- Research Service, Louis Stokes Cleveland Veterans' Affairs (VA) Medical Center, ClevelandOhio
| | - Jennifer L Cadnum
- Research Service, Louis Stokes Cleveland Veterans' Affairs (VA) Medical Center, ClevelandOhio
| | - Annette L Jencson
- Research Service, Louis Stokes Cleveland Veterans' Affairs (VA) Medical Center, ClevelandOhio
| | - Curtis J Donskey
- Geriatric Research, Education, and Clinical Center, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio
- Case Western Reserve University School of Medicine, Cleveland, Ohio
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Liu T, Zhu S, Yang Y, Qin W, Wang Z, Zhao Z, Liu T, Wang X, Duan T, Liu Y, Liu Y, Xia Q, Zhang H, Li N. Oroxylin A ameliorates ultraviolet radiation-induced premature skin aging by regulating oxidative stress via the Sirt1 pathway. Biomed Pharmacother 2024; 171:116110. [PMID: 38198955 DOI: 10.1016/j.biopha.2023.116110] [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: 09/29/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
Skin is susceptible to premature aging in response to ultraviolet (UV) radiation-induced oxidative stress, which can ultimately result in aberrant aging or age-related disorders. Accordingly, strategies that can be adopted to mitigate oxidative stress may contribute to protecting skin from induced aging-related damage, thereby offering promising approaches for the treatment of skin diseases and disorders. In this regard, oroxylin A (OA), a natural flavonoid isolated from certain plants used in traditional Chinese medicine, is considered to have notable antioxidant, anti-inflammatory, and anti-apoptotic properties, and is often used to treat certain inflammatory diseases. To date, however, there has been comparatively little research on the effects of OA with respect skin aging. In this study, we utilized UV radiation-induced mouse and cellular models of aging to assess the efficacy of OA in protecting against skin aging. Subsequently, to elucidate the potential mechanisms underlying the protective effect of OA on skin aging, we performed molecular docking analysis to investigate the involvement of the anti-aging gene Sirt1, which was further confirmed on the basis of Sirt1 gene silencing. We accordingly demonstrated that by promoting an increase in the expression of Sirt1, OA can contribute to suppressing UV-induced skin photo-aging in cells/mice by reducing oxidative stress. Furthermore, we established that by activating Sirt1, OA can also promote the dissociation of Nrf2 from Keap1 and its subsequent nuclear translocation. Collectively, our findings in this study reveal OA to be an effective natural compound that can be administered to delay the aging of skin triggered by UV, both in vivo and in vitro, by binding to Sirt1 to promote the deacetylation and nuclear translocation of Nrf2, thereby contributing to a reduction in oxidative stress. These findings may this provide a therapeutic target for the prevention of skin aging or aging-induced skin diseases.
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Affiliation(s)
- Tao Liu
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China; Laboratory of Pharmacology of TCM Formulae Co-Constructed by the Province-Ministry, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China; National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional chinese Medicine, Tianjin, PR China
| | - Shan Zhu
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China; Laboratory of Pharmacology of TCM Formulae Co-Constructed by the Province-Ministry, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China; National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional chinese Medicine, Tianjin, PR China
| | - Yi Yang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China; Laboratory of Pharmacology of TCM Formulae Co-Constructed by the Province-Ministry, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China; National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional chinese Medicine, Tianjin, PR China
| | - Wenxiao Qin
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China; Laboratory of Pharmacology of TCM Formulae Co-Constructed by the Province-Ministry, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China; National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional chinese Medicine, Tianjin, PR China
| | - Zijing Wang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China; Laboratory of Pharmacology of TCM Formulae Co-Constructed by the Province-Ministry, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China; National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional chinese Medicine, Tianjin, PR China
| | - Zhiyue Zhao
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China; Laboratory of Pharmacology of TCM Formulae Co-Constructed by the Province-Ministry, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China; National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional chinese Medicine, Tianjin, PR China
| | - Tao Liu
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China; Laboratory of Pharmacology of TCM Formulae Co-Constructed by the Province-Ministry, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China; National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional chinese Medicine, Tianjin, PR China
| | - Xiang Wang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China; Laboratory of Pharmacology of TCM Formulae Co-Constructed by the Province-Ministry, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China; National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional chinese Medicine, Tianjin, PR China
| | - Tian Duan
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China; Laboratory of Pharmacology of TCM Formulae Co-Constructed by the Province-Ministry, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China; National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional chinese Medicine, Tianjin, PR China
| | - Yang Liu
- Chinese medical college,Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Yan Liu
- Tianjin Polytechnic University, Tianjin, PR China
| | - Qingmei Xia
- Chinese medical college,Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Han Zhang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China; Laboratory of Pharmacology of TCM Formulae Co-Constructed by the Province-Ministry, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China; National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional chinese Medicine, Tianjin, PR China.
| | - Nan Li
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China; Laboratory of Pharmacology of TCM Formulae Co-Constructed by the Province-Ministry, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China; National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional chinese Medicine, Tianjin, PR China; Engineering research center of Modern chinese Medicine Discovery and Preparation Technique, Ministry of education, Tianjin University of Traditional chinese Medicine, Tianjin, PR China.
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229
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Li P, Koziel JA, Paris RV, Macedo N, Zimmerman JJ, Wrzesinski D, Sobotka E, Balderas M, Walz WB, Liu D, Yedilbayev B, Ramirez BC, Jenks WS. Indoor air quality improvement with filtration and UV-C on mitigation of particulate matter and airborne bacteria: Monitoring and modeling. J Environ Manage 2024; 351:119764. [PMID: 38100867 DOI: 10.1016/j.jenvman.2023.119764] [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: 03/04/2023] [Revised: 11/28/2023] [Accepted: 12/03/2023] [Indexed: 12/17/2023]
Abstract
Indoor air, especially with suspended particulate matter (PM), can be a carrier of airborne infectious pathogens. Without sufficient ventilation, airborne infectious diseases can be transmitted from one person to another. Indoor air quality (IAQ) significantly impacts people's daily lives as people spend 90% of their time indoors. An industrial-grade air cleaner prototype (filtration + ultraviolet light) was previously upgraded to clean indoor air to improve IAQ on two metrics: particulate matter (PM) and viable airborne bacteria. Previous experiments were conducted to test its removal efficiency on PM and airborne bacteria between the inlet and treated air. However, the longer-term improvement on IAQ would be more informative. Therefore, this research focused on quantifying longer-term improvement in a testing environment (poultry facility) loaded with high and variable PM and airborne bacteria concentrations. A 25-day experiment was conducted to treat indoor air using an air cleaner prototype with intermittent ON and OFF days in which PM and viable airborne bacteria were measured to quantify the treatment effect. The results showed an average of 55% reduction of total suspended particulate (TSP) concentration between OFF days (110 μg/m3) and ON days (49 μg/m3). An average of 47% reduction of total airborne viable bacteria concentrations was achieved between OFF days (∼3200 CFU/m3) and ON days (∼2000 CFU/m3). A cross-validation (CV) model was established to predict PM concentrations with five input variables, including the status of the air cleaner, time (h), ambient temperature, indoor relative humidity, and day of the week to help simulate the air-cleaning effect of this prototype. The model can approximately predict the air quality trend, and future improvements may be made to improve its accuracy.
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Affiliation(s)
- Peiyang Li
- Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, USA
| | - Jacek A Koziel
- Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, USA; Livestock Nutrient Management Research Unit, USDA-ARS Conservation & Production Research Laboratory, Bushland, TX, USA.
| | | | - Nubia Macedo
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | - Jeffrey J Zimmerman
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | - Danielle Wrzesinski
- Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, USA
| | - Erin Sobotka
- Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, USA
| | - Mateo Balderas
- Department of Mechanical Engineering, Iowa State University, Ames, IA, USA
| | - William B Walz
- Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, USA
| | - Dongjie Liu
- Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
| | - Bauyrzhan Yedilbayev
- Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, USA; Department of Geography and Environmental Sciences, al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Brett C Ramirez
- Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, USA
| | - William S Jenks
- Department of Chemistry, Iowa State University, Ames, IA, USA
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230
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Cao R, Tan L, Wan Q, Wu G, Wang J, Lin Y, Huang T, Wen G. The improved resistance of germinated spores to ultraviolet irradiation: Comparison with chlorine. Chemosphere 2024; 349:140929. [PMID: 38092169 DOI: 10.1016/j.chemosphere.2023.140929] [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: 09/19/2023] [Revised: 12/07/2023] [Accepted: 12/07/2023] [Indexed: 12/19/2023]
Abstract
Fungi outbreaks in water will include a series of processes, including spore aggregation, germination, biofilm, and finally present in a mixed state in the aquatic environment. More attention is paid to the control of dispersed fungal spores, however, there was little knowledge of the control of germinated spores. This study investigated the inactivation kinetics and mechanism of ultraviolet (UV) treatment for fungal spores with different germination percentages compared with dormant spores. The results indicated that the inactivation rate constants (k) of spores with 5%-45% germination were 0.0278-0.0299 cm2/mJ for Aspergillus niger and 0.0588-0.0647 cm2/mJ for Penicillium polonicum, which were lower than those of dormant spores. It suggested that germinated spores were more tolerant to UV irradiation than dormant spores, and it may be due to the defensive barrier (upregulated pigments) and some reductive substance (upregulated enoyl reductase) by absorbing UV or reacting with reactive oxygen species according to transcriptome analysis. Compared to dormant spores, the k-UV of germinated spores decreased by 18.17%-26.56% for Aspergillus niger, which was less than k-chlorine (62.33%-69.74%). A slighter decrease in k-UV showed UV irradiation can efficiently control fungi contamination, especially when dormant spores and germinated spores coexisted in actual water systems. This study indicates that more attention should be paid to germinated spores.
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Affiliation(s)
- Ruihua Cao
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Lili Tan
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Qiqi Wan
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Gehui Wu
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Jingyi Wang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Yingzi Lin
- School of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun 130118, PR China
| | - Tinglin Huang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Gang Wen
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China.
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231
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Zhang J, Li J, Tang W, Liu X, Yang C, Ma J. Highly efficient reduction of bromate by vacuum UV/sulfite system. Chemosphere 2024; 349:140875. [PMID: 38065260 DOI: 10.1016/j.chemosphere.2023.140875] [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: 08/24/2023] [Revised: 11/03/2023] [Accepted: 11/30/2023] [Indexed: 01/10/2024]
Abstract
Bromate (BrO3-), a worldwide regulated by-product after ozone disinfection, is often detected in bromide-containing water, and has a strict limit of 10 μg L-1 in potable water. BrO3- degradation by advanced reduction processes (ARPs) has gained much attention because of efficient removal and easy integration with ultraviolet disinfection (UV at 254 nm). In the vacuum UV (VUV, 185/254 nm)/sulfite system, the elimination kinetics of BrO3- increased by 9-fold and 15-fold comparing with VUV alone and UV/sulfite system. This study further demonstrated the hydrated electron (eaq-) works as the dominant species in BrO3- degradation in alkaline solution, while in the acidic solution the H• became a secondary reactive species besides eaq-. Hence, the influences of pH, sulfite concentration, dissolved gas and water matrix on effectiveness of degradation kinetics of BrO3- was explored in details. With increasing pH, the proportion of SO32- species increased and even became the major ones, which also correlated well with the kobs (min-1) of BrO3- degradation. The stability of eaq- also climbs with increasing pH, while that of H• drops significantly. Higher sulfite dosage favored a more rapid degradation of BrO3-. The presence of dissolved oxygen inhibited BrO3- removal due to the scavenging effect of O2 toward eaq- and transformed VUV/sulfite-based ARP to an advanced oxidation process (AOP), which was ineffective for BrO3- removal. BrO3- removal was inhibited to varying degrees after anions (e.g., bicarbonate (HCO3-), chloride (Cl-), nitrate (NO3-)) and humic acid (HA) being added.
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Affiliation(s)
- Jing Zhang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China.
| | - Junjie Li
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, PR China
| | - Weijie Tang
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, PR China
| | - Xin Liu
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, PR China
| | - Chun Yang
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, PR China.
| | - Jun Ma
- School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
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232
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Pimentel A, Linden KG. Optimizing radical yield from free chlorine with tailored UV light emitting diode emission spectra. Water Res 2024; 249:120923. [PMID: 38064784 DOI: 10.1016/j.watres.2023.120923] [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: 07/12/2023] [Revised: 09/29/2023] [Accepted: 11/23/2023] [Indexed: 01/03/2024]
Abstract
Novel UV sources, which do not contain mercury, provide the opportunity for enhancement of current oxidation technologies through spectral optimization, minimizing inefficiencies that currently limit conventional technology. Wastewater reuse is the primary full-scale application of UV advanced oxidation processes (AOPs) in practice but any background absorbance and the low molar absorption by conventional radical promoters (hydrogen peroxide) have historically limited their system efficiency, resulting in the underutilization of photons in a reactor. This bench-scale research evaluated use of longer wavelength UV light emitting diodes (265, 280, and 300 nm) matched with free chlorine to optimize the utilization of photons for advanced oxidation. Free chlorine possesses large absorption bands in the 280 to 300 nm range in basic pH waters which are common in carbon-based reuse and was used to experimentally verify quantum yields of hydroxyl radical generation across the UV LED peak emission wavelengths. pH- and wavelength-dependent fluence-based rate constants were experimentally derived using Nitrobenzene and Benzoic acid as probe compounds and evaluated to determine the contribution of the hydroxyl and chlorine radical. Reclaimed water taken from various advanced treatment steps was treated with this UV LED AOP to investigate how background absorbance affects radical generation and contaminant transformation kinetics. In addition, alternative performance metrics to evaluate hydroxyl radical production at different incident fluence rates and different rates of photon absorption at unique wavelengths across varying background UV absorbance levels were assessed.
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Affiliation(s)
- Anthony Pimentel
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, 4001 Discovery Dr, Boulder, CO 80303, USA
| | - Karl G Linden
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, 4001 Discovery Dr, Boulder, CO 80303, USA.
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233
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Ridella F, Marcet I, Gutiérrez G, Rendueles M, Díaz M. Characterization of Pickering emulsions stabilized by delipidated egg yolk granular protein nanoparticles crosslinked with ultraviolet radiation. Food Chem 2024; 433:137330. [PMID: 37660604 DOI: 10.1016/j.foodchem.2023.137330] [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: 10/27/2022] [Revised: 06/08/2023] [Accepted: 08/28/2023] [Indexed: 09/05/2023]
Abstract
In this study, delipidated egg yolk proteins were used for the first time to prepare nanoparticles by the self-assembling method at pH 8.0, then treated with UV-C as a crosslinking agent, and their stability tested at pH 7.0, which is a more convenient pH for food applications. According to the results obtained, non-irradiated nanoparticles had a size of 431.8 ± 75.7 nm at pH 7.0, but the 10 min UV-C irradiated nanoparticles had an average size of 139.7 ± 5.9 nm. These nanoparticles also showed a high resistance to destabilization by SDS, urea or DTT and noticeable antioxidant and ferrous chelating activities. Pickering emulsions prepared at the nanoparticle concentration of 1 % (w/w) showed the smallest average droplet size and the lowest Turbiscan stability index value after 80 days of storage. All in all, these results have important implications for the utilisation of these proteins as a conventional Pickering emulsifying agent.
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Affiliation(s)
- Florencia Ridella
- Department of Chemical and Environmental Engineering, University of Oviedo, C/ Julián Clavería 8, 33006 Oviedo, Spain
| | - Ismael Marcet
- Department of Chemical and Environmental Engineering, University of Oviedo, C/ Julián Clavería 8, 33006 Oviedo, Spain
| | - Gemma Gutiérrez
- Department of Chemical and Environmental Engineering, University of Oviedo, C/ Julián Clavería 8, 33006 Oviedo, Spain
| | - Manuel Rendueles
- Department of Chemical and Environmental Engineering, University of Oviedo, C/ Julián Clavería 8, 33006 Oviedo, Spain.
| | - Mario Díaz
- Department of Chemical and Environmental Engineering, University of Oviedo, C/ Julián Clavería 8, 33006 Oviedo, Spain
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234
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Hasegawa M, Arai E, Ito S, Wakamatsu K. UV-induced feather color change reflects its porphyrin content. Naturwissenschaften 2024; 111:6. [PMID: 38300300 DOI: 10.1007/s00114-024-01890-z] [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: 08/18/2023] [Revised: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 02/02/2024]
Abstract
Pigmentary coloration is widespread in animals. Its evolutionary and ecological features are often attributed to the property of predominant pigments; therefore, most research has focused on predominant pigments such as carotenoids in carotenoid-based coloration. However, coloration results from predominant pigments and many other minority pigments, and the importance of the latter is overlooked. Here, we focused on porphyrin, an "uncommon" pigment found in bird feathers, and investigated its importance in the context of feather color changes in the barn swallow Hirundo rustica. We found that the "pheomelanin-based coloration" of the barn swallow faded after the irradiation of UV light, and this effect was particularly strong in the feathers of young swallows (nestlings and fledglings, here). We also found that it is not the predominant pigment, pheomelanin, but protoporphyrin IX pigment that showed the same pattern of depigmentation after the irradiation of UV light, particularly in the feathers of young swallows. In fact, the abovementioned age-dependent feather color change was statistically explained by the amount of porphyrin in the feathers. The current study demonstrates that a minority pigment, porphyrin, explains within-season dynamic color change, an ecological feature of feather coloration. The porphyrin-mediated rapid color change would benefit young birds, in which feather coloration affects the parental food allocation during a few weeks before independence, but not later. Future studies should not ignore these minor but essential pigments and their evolutionary and ecological functions.
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Affiliation(s)
- Masaru Hasegawa
- Department of Environmental Science, Ishikawa Prefectural University, Nonoichi, Ishikawa, 921-8836, Japan.
| | - Emi Arai
- Research Institute for Humanity and Nature, 457-4 Motoyama, Kamigamo, Kita-ku, Kyoto, 603-8047, Japan
| | - Shosuke Ito
- Institute for Melanin Chemistry, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Kazumasa Wakamatsu
- Institute for Melanin Chemistry, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
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235
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ALMatrafi TA, Mohammedsaleh ZM, Moawadh MS, Bassfar Z, Jalal MM, Badahdah FA, Alghamdi YS, Almasoudi HH, Hakami MA, Binshaya AS, Almohaimeed HM, Soliman MH. Identification of potential biomarkers for melanoma cancer (black tumor) using bioinformatics strategy: a study based on GEO and SRA datasets. J Appl Genet 2024; 65:83-93. [PMID: 37875608 DOI: 10.1007/s13353-023-00794-4] [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: 09/10/2023] [Revised: 10/03/2023] [Accepted: 10/04/2023] [Indexed: 10/26/2023]
Abstract
Melanoma, a highly invasive type of skin cancer that penetrates the entire dermis layer, is associated with increased mortality rates. Excessive exposure of the skin to sunlight, specifically ultraviolet radiation, is the underlying cause of this malignant condition. The appearance of unique skin moles represents a visible clue, referred to as the "ugly duckling" sign, indicating the presence of melanoma and its association with cellular DNA damage. This research aims to explore potential biomarkers derived from microarray data, employing bioinformatics techniques and methodologies, for a thorough investigation of melanoma skin cancer. The microarray dataset for melanoma skin cancer was obtained from the GEO database, and thorough data analysis and quality control measures were performed to identify differentially expressed genes (DEGs). The top 14 highly expressed DEGs were identified, and their gene information and protein sequences were retrieved from the NCBI gene and protein database. These proteins were further analyzed for domain identification and network analysis. Gene expression analysis was conducted to visualize the upregulated and downregulated genes. Additionally, gene metabolite network analysis was carried out to understand the interactions between highly interconnected genes and regulatory transcripts. Molecular docking was employed to investigate the ligand-binding sites and visualize the three-dimensional structure of proteins. Our research unveiled a collection of genes with varying expression levels, some elevated and others reduced, which could function as promising biomarkers closely linked to the development and advancement of melanoma skin cancer. Through molecular docking analysis of the GINS2 protein, we identified two natural compounds (PubChem-156021169 and PubChem-60700) with potential as inhibitors against melanoma. This research has implications for early detection, treatment, and understanding the molecular basis of melanoma.
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Affiliation(s)
| | - Zuhair M Mohammedsaleh
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, University of Tabuk, 71491, Tabuk, Saudi Arabia
| | - Mamdoh S Moawadh
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, University of Tabuk, 71491, Tabuk, Saudi Arabia
| | - Zaid Bassfar
- Faculty of Computing and Information Technology, University of Tabuk, Tabuk, Saudi Arabia
| | - Mohammed M Jalal
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, University of Tabuk, 71491, Tabuk, Saudi Arabia
| | - Fatima Ahmed Badahdah
- Surgical Department, Prince Sultan Military Medical City, PSMMC, Riyadh, Saudi Arabia
| | - Youssef S Alghamdi
- Department of Biology, Turabah University College, Taif University, 21995, Taif, Saudi Arabia
| | - Hassan Hussain Almasoudi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Najran University, Najran, Saudi Arabia
| | - Mohammed Ageeli Hakami
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Al-Quwayiyah, Shaqra University, Riyadh, Saudi Arabia
| | - Abdulkarim S Binshaya
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, 11942, AlKharj, Saudi Arabia
| | - Hailah M Almohaimeed
- Department of Basic Science, College of Medicine, Princess Nourah bint Abdulrahman, University, P.O. Box 84428, 11671, Riyadh, Saudi Arabia
| | - Mona H Soliman
- Botany and Microbiology Department, Faculty of Science, Cairo University, Giza, 12613, Egypt.
- Biology Department, Faculty of Science, Taibah University, Al-Sharm, Yanbu El-Bahr, Yanbu, 46429, Saudi Arabia.
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236
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Lee SJ, Lee D, Park SA, Park JJ, Park WH. Hyaluronic acid/polyphenol sunscreens with broad-spectrum UV protection properties from tannic acid and quercetin. Int J Biol Macromol 2024; 257:128585. [PMID: 38056734 DOI: 10.1016/j.ijbiomac.2023.128585] [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: 07/24/2023] [Revised: 11/21/2023] [Accepted: 12/01/2023] [Indexed: 12/08/2023]
Abstract
Currently, commercial sunscreens cause a number of biotoxicity and environmental issues, making it imperative to develop biocompatible alternatives. In this study, we aimed to develop an alternative sunscreen from two ecofriendly and biocompatible natural polyphenolic compounds, tannic acid (TA) and quercetin (Que). The sunscreen was prepared through a simple process using an oil-in-water emulsion as the medium and hyaluronic acid (HA) as the base polymer to improve biocompatibility. The HA/TA/Que. sunscreen prepared in this study exhibits 0 % transmittance in the UVB region and <15 % transmittance in the UVA region, resulting in excellent sun-protection properties (SPF 30). Remarkably, the as-prepared HA/TA/Que. sunscreen has a suitable viscosity and similar UV protection properties to those of commercial sunscreens. The HA/TA/Que. sunscreen also exhibits 90.4 % antioxidant activity against 2,2-diphenyl-1-picrylhydrazyl, demonstrating an ability to effectively capture reactive oxygen species that directly affect the skin. In addition, the cell viability was >90 % at a concentration of 50 μg/mL after 7 days, indicating excellent cytocompatibility. Owing to its various advantageous features, the HA/TA/Que. sunscreen with excellent sun protection properties and multiple functionalities is expected to resolve many environmental and biological issues caused by commercial sunscreens.
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Affiliation(s)
- Su Jin Lee
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea
| | - Dongjin Lee
- Department of Nature-Inspired Nanoconvergence Systems, Korea Institute of Machinery and Materials, Daejeon 34103, South Korea
| | - Su A Park
- Department of Nature-Inspired Nanoconvergence Systems, Korea Institute of Machinery and Materials, Daejeon 34103, South Korea
| | - Jeong Jin Park
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea
| | - Won Ho Park
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea.
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237
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Lotfalinezhad E, Taheri A, Razavi SE, Sanei SJ. Preparation and assessment of alginate-microencapsulated Trichoderma harzianum for controlling Sclerotinia sclerotiorum and Rhizoctonia solani on tomato. Int J Biol Macromol 2024; 259:129278. [PMID: 38211905 DOI: 10.1016/j.ijbiomac.2024.129278] [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: 08/27/2023] [Revised: 12/09/2023] [Accepted: 01/04/2024] [Indexed: 01/13/2024]
Abstract
This study aimed to develop microencapsulation technology using alginate to improve the viability and performance of Trichoderma harzianum. The method of ionic gelation was used to prepare the microparticles, and the efficiency of encapsulation was estimated to be 99%. The average size of the prepared microspheres was 2600 μm (wet) and 1000 μm (dry). Scanning electron microscopy revealed that the microspheres were approximately spherical. Fourier transform infrared spectrophotometer analysis indicated an interaction between T. harzianum and the microspheres. The results of temperature resistance and light stability against ultraviolet radiation emphasized the positive impact of microencapsulation in improving the viability and resistance of T. harzianum compared to the non-microencapsulated state. The disease percentage of Rhizoctonia solani and Sclerotinia sclerotiorum in plants treated with microencapsulated T. harzianum microcapsules was 8.88 % and 20 % respectively, but in the control group was 73.33 % (p ≤ 0.05).
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Affiliation(s)
- Elahe Lotfalinezhad
- Department of Plant Protection, Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
| | - Abdolhossein Taheri
- Department of Plant Protection, Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
| | - Seyed Esmaeil Razavi
- Department of Plant Protection, Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
| | - Seyed Javad Sanei
- Department of Plant Protection, Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
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238
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Shan Z, Huang J, Huang Y, Zhou Y, Li Y. Copper ions reinforced flexible carboxymethylcellulose/polyethyleneimine composite films with enhanced mechanical properties, UV-shielding performance, thermal stability, solvent resistance, and antibacterial activity. Int J Biol Macromol 2024; 259:129281. [PMID: 38216017 DOI: 10.1016/j.ijbiomac.2024.129281] [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: 10/28/2023] [Revised: 01/03/2024] [Accepted: 01/04/2024] [Indexed: 01/14/2024]
Abstract
A composite film (CMC/PEI) consisting of anionic carboxymethylcellulose (CMC) and cationic polyethyleneimine (PEI) can be easily produced through the solution casting method using self-assembly based on electrostatic interaction and hydrogen bonding. Subsequently, the resulting CMC/PEI polyelectrolyte composite film with a network structure was crosslinked with divalent Cu2+ ions through ionic and coordination bonds, resulting in a strengthened Cu(II)@CMC/PEI film. The composite film was characterized based on its structural, surface, thermal, UV protection, antibacterial, and degradation aspects. The results demonstrated this film has impressive mechanical properties, remarkable solvent resistance, good antibacterial properties, and excellent UV-shielding performance by completely blocking ultraviolet light with wavelengths below 360 nm. These properties can be attributed to the presence of Cu2+ ions and PEI in the film. This work is valuable for the development of novel UV-shielding materials and should contribute to the design of carboxymethylcellulose composite films with desirable properties and exceptional performance.
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Affiliation(s)
- Zhihao Shan
- Department of Chemistry, College of Chemistry and Materials Science, Panyu Campus, Jinan University, Guangzhou 511443, China
| | - Jiayi Huang
- Department of Chemistry, College of Chemistry and Materials Science, Panyu Campus, Jinan University, Guangzhou 511443, China
| | - Yuling Huang
- Department of Chemistry, College of Chemistry and Materials Science, Panyu Campus, Jinan University, Guangzhou 511443, China
| | - Yuping Zhou
- Department of Chemistry, College of Chemistry and Materials Science, Panyu Campus, Jinan University, Guangzhou 511443, China
| | - Yiqun Li
- Department of Chemistry, College of Chemistry and Materials Science, Panyu Campus, Jinan University, Guangzhou 511443, China.
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239
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Chen L, Zhu J, Song J, Yang J, Niu Y, Zhao D. Catalytic degradation of rhodamine B by titanium dioxide doped polydopamine photoresponsive composites. Int J Biol Macromol 2024; 259:129405. [PMID: 38219944 DOI: 10.1016/j.ijbiomac.2024.129405] [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: 10/31/2023] [Revised: 01/02/2024] [Accepted: 01/09/2024] [Indexed: 01/16/2024]
Abstract
Titanium dioxide-based materials treat wastewater contaminated by organic pollutants. However, the wide band gap and the ease of agglomeration limit its photocatalytic activity. PDA/PEI@TiO2@P-HSM composites were synthesized using PDA/PEI as an interfacial bonding modifier via polymerization reaction. Phase and chemical bonding analysis confirmed the modifiedTiO2 coated P-HSM, which can effectively reduce the band gap and control the agglomeration of titanium dioxide, i.e., suitable to degrade RhB. Under UV irradiation, PDA/PEI @TiO2@P-HSM can remove RhB up to 90 % in 100 min. The photocatalytic degradation process conforms to the Langmuir-Hinshelwood quasi-primary equation. The composite exhibited excellent stability and recycling i.e., a high removal effect, with a removal rate of up to 60 % after seven cycles of reaction.
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Affiliation(s)
- Lijun Chen
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China
| | - Junfeng Zhu
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China.
| | - Jie Song
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China.
| | - Jing Yang
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China
| | - Yuhua Niu
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China
| | - Dong Zhao
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China
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240
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Yu L, Xu SY, Luo XC, Ying SH, Feng MG. High photoreactivation activities of Rad2 and Rad14 in recovering insecticidal Beauveria bassiana from solar UV damage. J Photochem Photobiol B 2024; 251:112849. [PMID: 38277960 DOI: 10.1016/j.jphotobiol.2024.112849] [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: 11/02/2023] [Revised: 12/28/2023] [Accepted: 01/21/2024] [Indexed: 01/28/2024]
Abstract
Anti-ultraviolet (UV) roles of Rad2 and Rad14 depend on nucleotide excision repair (NER) of UV-induced DNA lesions in budding yeast but remain unexplored yet in filamentous fungi. Here, nucleus-specific Rad2 and Rad14 orthologs are shown to recover Beauveria bassiana, a main source of wide-spectrum mycoinsecticides, from solar UV damage through photorepair-depending photoreactivation. As a photorepair index, photoreactivation (germination) rates of lethal UVB dose-irradiated conidia via a 3- or 5-h light plus 9- or 7-h dark incubation at 25 °C were drastically reduced in the Δrad2 and Δrad14 mutants versus a wild-type strain. As an NER index, nighttime-mimicking 12-h dark reactivation rates of low UVB dose-impaired conidia decreased sharply compared to the corresponding photoreactivation rates in the presence or absence of either ortholog, indicating that its extant NER activity was limited to recovering light UVB damage in the field. The high photoreactivation activity of either Rad2 or Rad14 was derived from its tight link to a large protein complex formed by photolyase regulators and other anti-UV proteins through multiple protein-protein interactions revealed by yeast two-hybrid assays. Therefore, Rad2 and Rad14 recover B. bassiana from solar UV damage through photoreactiovation in vivo that depends primarily on photorepair, although they contribute little to the fungal lifecycle-related phenotypes. These findings unveil a novel scenario distinguished from the NER-depending anti-UV roles of Rad2 and Rad14 in the model yeast and broaden a biological basis crucial for rational application of fungal insecticides to improve pest control efficacy via feasible recovery of solar UV damage.
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Affiliation(s)
- Lei Yu
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Si-Yuan Xu
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xin-Cheng Luo
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Sheng-Hua Ying
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Ming-Guang Feng
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China.
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241
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Abdi R, Cao W, Zogheib A, Pukazhendhi KMK, Espinal-Ruiz M, Gammage S, Warriner K, Joye IJ. Surface disinfection of wheat kernels using gas phase hydroxyl-radical processes: Effect on germination characteristics, microbial load, and functional properties. J Food Sci 2024; 89:1154-1166. [PMID: 38161277 DOI: 10.1111/1750-3841.16883] [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: 08/05/2023] [Revised: 11/17/2023] [Accepted: 11/28/2023] [Indexed: 01/03/2024]
Abstract
Wheat kernels harbor a diverse microflora that can negatively affect the suitability of the grains for further processing. To reduce surface microflora, a kernel disinfection method is required that does not affect grain functionality. Three different versions of gas phase hydroxyl-radical processes were compared with the common method for grain disinfection, that is, a bleach treatment. The gas phase hydroxyl-radicals are generated by the UV-C mediated degradation of hydrogen peroxide and/or ozone in a near water-free process. It was found that treating kernels with a bleach solution could reduce total aerobic count (TAC) and fungal count to below the level of enumeration. In comparison, the gas phase hydroxyl-radical treatment, that is, H2 O2 -UV-ozone treatment, could support a 1.3 log count reduction (LCR) in TAC and a 1.1 LCR in fungal count. The microbial load reduction for the wholemeal samples was less pronounced as endophytic microorganisms were less affected by all treatments, hinting at a limited penetration depth of the treatments. Despite reducing the microbial load on the kernel surface through the bleach and H2 O2 -UV-ozone treatments, none of these treatments resulted in a reduced microbial count on grains that underwent sprouting after the treatments. No negative effect on germination power or development of the seedling was observed for any of the treatments. The gluten aggregation behavior and xylanase activity of the wholemeal also remained unchanged after the gas phase hydroxyl-radical treatments. Our findings suggest that UV-H2 O2 -ozone treatment shows promise for dry-kernel disinfection, but further optimization of the processing parameters is required.
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Affiliation(s)
- Reihaneh Abdi
- Department of Food Science, University of Guelph, Guelph, Ontario, Canada
| | - Wei Cao
- Department of Food Science, University of Guelph, Guelph, Ontario, Canada
- School of Engineering, University of Guelph, Guelph, Ontario, Canada
| | - Ali Zogheib
- Department of Food Science, University of Guelph, Guelph, Ontario, Canada
| | | | - Mauricio Espinal-Ruiz
- Department of Food Science, University of Guelph, Guelph, Ontario, Canada
- Escuela de Química, Facultad de Ciencias, Universidad Industrial de Santander, Bucaramanga, Colombia
| | - Sarah Gammage
- Department of Food Science, University of Guelph, Guelph, Ontario, Canada
| | - Keith Warriner
- Department of Food Science, University of Guelph, Guelph, Ontario, Canada
| | - Iris J Joye
- Department of Food Science, University of Guelph, Guelph, Ontario, Canada
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242
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Son HS, Nugent L, Wang J, Varadaraj V, Smith K, Bower KS, Mgboji G, Soiberman US, Srikumaran D. Factors Associated With Receipt of Crosslinking for Keratoconus. Cornea 2024; 43:214-220. [PMID: 37506367 PMCID: PMC10818004 DOI: 10.1097/ico.0000000000003353] [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: 01/26/2023] [Accepted: 06/11/2023] [Indexed: 07/30/2023]
Abstract
PURPOSE The aim of this study was to identify factors associated with receipt of standard fluence epithelium-off crosslinking (CXL) for keratoconus (KCN). METHODS This retrospective, cross-sectional study reviewed electronic health records of treatment-naive patients with KCN seen at the Wilmer Eye Institute between January 2017 and September 2020. Tomographic data were derived from Pentacam (Oculus, Wetzlar, Germany) devices. Multivariable population-average model using generalized estimating equations adjusting for age, sex, race, national area deprivation index, vision correction method, and disease severity was used to identify factors associated with receipt of CXL. RESULTS From 583 patients with KCN, 97 (16.6%) underwent CXL for KCN. Patients who received CXL in at least 1 eye were significantly younger (mean 24.0 ± 7.8 years) than patients who had never undergone CXL (33.4 ± 9.3 years) ( P < 0.001). In multivariable analysis, Black patients had 63% lower odds of receiving CXL for KCN (OR: 0.37, 95% CI, 0.18-0.79) versus White patients, and older age was protective against receipt of CXL (OR: 0.89 per 1-year increase, 95% CI, 0.86-0.93). Comparison of characteristics by race demonstrated that Black patients presented with significantly worse vision, higher keratometric indices (K1, K2, and Kmax), and thinner corneal pachymetry at baseline versus White or Asian patients. CONCLUSIONS In this clinical cohort of patients with KCN from a tertiary referral center, Black patients were less likely to receive CXL presumably because of more advanced disease at presentation. Earlier active population screening may be indicated to identify and treat these patients before they become ineligible for treatment and develop irreversible vision loss. Such strategies may improve health equity in KCN management.
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Affiliation(s)
- Hyeck-Soo Son
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, MD, USA
- Department of Ophthalmology, University of Heidelberg, Heidelberg, Baden-Wuerttemberg, Germany
| | - Liam Nugent
- Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Jiangxia Wang
- Department of Biostatistics, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Varshini Varadaraj
- Johns Hopkins Disability Health Research Center, Johns Hopkins School of Nursing, Baltimore, MD, USA
| | - Kerry Smith
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Kraig S. Bower
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Glory Mgboji
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Uri S. Soiberman
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Divya Srikumaran
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, MD, USA
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243
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Skripkin E, Podurets A, Kolokolov D, Emelyanova M, Cherezova P, Navolotskaya D, Ermakov S, Shishov A, Bulatov A, Bobrysheva N, Osmolowsky M, Voznesenskiy M, Osmolovskaya O. Fast and ecofriendly triple sulfonamides mixture utilization using UV irradiation and spherical SnO 2 nanoparticles with controllable parameters and antibacterial activity. Chemosphere 2024; 349:140981. [PMID: 38114025 DOI: 10.1016/j.chemosphere.2023.140981] [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: 08/21/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/21/2023]
Abstract
One of the solutions for the growing problem of water purification is photocatalytic degradation of the pollutants. Semiconductor nanoparticles are widely under study as a promising photocatalyst for this purpose. However, there is still lack of understanding of the relation between properties of nanoparticles, in their turn related with synthesis conditions, and photocatalytic efficiency, as well as of the other factors influencing the process. For the first time, a possibility to regulate photocatalytic activity of SnO2 nanoparticles under UV light via regulation of structural parameters is shown. A method for obtaining spherical nanoparticles with different parameters was developed. Obtained nanoparticles were fully characterized. Special attention was paid to the study of oxygen vacancies. With the help of quantum computational methods, it was shown, that the concentration of vacancies is around 1 per 32 tin atoms. Obtained data on oxygen vacancies were further used for the evaluation of pollutant-nanoparticle surface interaction to get closer to the calculations of real systems. On the example of methylene blue, it was shown that the greater is the amount of oxygen vacancies and the lower the amount of defects, the higher photocatalytic activity. The obtained dependence is confirmed by the fact that the photoresponse increases with a decrease of amount of defects in the sample. Degradation kinetics of sulfonamides mixture was studied, and its dependence on active complex formation was shown based on the quantum chemical calculation data. Degradation of antibiotics in water from Neva River reached more than 95% in 35 min, which indicates that developed photocatalyst efficiency is not affected by pollutants contained in open water in the centre of the metropolis. It was shown, that the use of nanoparticles allows to speed up the process of bacteria destruction under UV light, which indicates the antibacterial activity of obtained nanoparticles.
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Affiliation(s)
- Evgenii Skripkin
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Anastasiia Podurets
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia.
| | - Daniil Kolokolov
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Maria Emelyanova
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Polina Cherezova
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Daria Navolotskaya
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Sergey Ermakov
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Andrey Shishov
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Andrey Bulatov
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Natalia Bobrysheva
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Mikhail Osmolowsky
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Mikhail Voznesenskiy
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Olga Osmolovskaya
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
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244
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Speeckaert R, van Geel N. Ultraviolet photography in vitiligo using a smartphone camera attachment for checking sunscreen coverage. J Am Acad Dermatol 2024; 90:e73-e74. [PMID: 37871803 DOI: 10.1016/j.jaad.2023.10.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/28/2023] [Accepted: 10/03/2023] [Indexed: 10/25/2023]
Affiliation(s)
| | - Nanja van Geel
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium
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245
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Mala VR, Albert KJ, Princy A, Kennedy SMM. Emission enhancement in the luminescence performance of warm red light-emitting LiSrVO 4 :Pr 3+ phosphors. LUMINESCENCE 2024; 39:e4686. [PMID: 38359905 DOI: 10.1002/bio.4686] [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: 10/06/2023] [Revised: 01/12/2024] [Accepted: 01/14/2024] [Indexed: 02/17/2024]
Abstract
Warm red-emitting praseodymium-doped LiSrVO4 phosphors were synthesized via solid-state reaction. The phase formation was verified using an X-ray diffraction study and the morphology was investigated using a scanning electron microscope study. The LiSrVO4 :Pr3+ phosphors emitted red light when exposed to ultraviolet light, indicating their possibility for use in warm white light-emitting diodes (WLEDs). Furthermore, the effect of charge compensators on the luminescence characteristics was addressed. The decay time was investigated using time-resolved photoluminescence. Furthermore, thermal quenching was analyzed through temperature-dependent photoluminescence spectra. Their sensitivity was calculated using temperature-dependent decay time analysis. The colour purity of the emitted light could be measured by photometric analysis. This comprehensive investigation provides a thorough understanding of the luminescence properties of phosphors for WLED applications.
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Affiliation(s)
- V Rathina Mala
- Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Rajiv Gandhi Salai, Kalavakkam-603110, Chennai, Tamil Nadu, India
| | - Kavia J Albert
- Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Rajiv Gandhi Salai, Kalavakkam-603110, Chennai, Tamil Nadu, India
| | - A Princy
- Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Rajiv Gandhi Salai, Kalavakkam-603110, Chennai, Tamil Nadu, India
| | - S Masilla Moses Kennedy
- Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Rajiv Gandhi Salai, Kalavakkam-603110, Chennai, Tamil Nadu, India
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246
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Schuetz R, Claypool J, Sfriso R, Vollhardt JH. Sunscreens can preserve human skin microbiome upon erythemal UV exposure. Int J Cosmet Sci 2024; 46:71-84. [PMID: 37664974 DOI: 10.1111/ics.12910] [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: 04/05/2023] [Revised: 08/09/2023] [Accepted: 08/23/2023] [Indexed: 09/05/2023]
Abstract
OBJECTIVE Ultraviolet radiation (UVR) is a known environmental key factor for premature skin ageing. Only few scientific evidence is available to support the effects of UVR on the skin microbiome. This in vivo pilot study aimed to evaluate the impact on the skin microbiome upon erythemal UV exposure and the protection of UV-exposed skin microbiome by UV filters. METHODS Ten female volunteers were treated with an sun protection factor (SPF) 20 sunscreen and placebo formulation (without UV filters) on their upper middle backs and irradiated with an erythemal dose (2 MED) by a solar simulator. Skin swabbing samples from four zones (i.e., unexposed, exposed, sunscreen- and placebo-treated on exposed skin) were collected for the microbiome analysis before and 2 h after UV exposure, respectively, and processed via shallow 16S rRNA Amplicon and Shotgun metagenomic sequencing. An in vitro UV method was developed to confirm the protection of isolated bacterial strains by single UV filters and combinations. RESULTS Alpha diversity was impacted by significant inter-individual differences and by treatment rather than by irradiation. Cutibacterium acnes was found to be the most abundant and a confounding factor for diversity. On a species level, Lactobacillus crispatus was negatively associated with UVR and placebo treatment, whereas there was a positive association with sunscreen treatment. The sunscreen treatment also favoured an interaction network with central Micrococcus genus. The in vitro results showed that both single UV filters and combinations had specific effects on the survival rates of L. crispatus, C. acnes, and Staphylococcus epidermidis. CONCLUSION We identified potential microorganisms and bacterial interactions that were associated with an SPF 20 sunscreen treatment. The specific protection of L. crispatus as a key player in the UV-exposed skin microbiome and reduction of C. acnes population by UV filters might lead to new cosmetic concepts for photoprotection.
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Affiliation(s)
- Rolf Schuetz
- Personal Care and Aroma, DSM Nutritional Products Ltd, Kaiseraugst, Switzerland
| | - Joshua Claypool
- Biodata and Translation, DSM Nutritional Products, Lexington, Massachusetts, USA
| | - Riccardo Sfriso
- Personal Care and Aroma, DSM Nutritional Products Ltd, Kaiseraugst, Switzerland
| | - Juergen H Vollhardt
- Personal Care and Aroma, DSM Nutritional Products Ltd, Kaiseraugst, Switzerland
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Howaldt A, Zhang W, Deng S, Becker M, Hou Y, Clahsen T, Bock F, Cursiefen C. Corneal crosslinking ameliorates the extent of corneal oedema in subsequent acute keratoconus in an ex vivo model. Acta Ophthalmol 2024; 102:e134-e137. [PMID: 37259477 DOI: 10.1111/aos.15712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/25/2023] [Accepted: 05/05/2023] [Indexed: 06/02/2023]
Affiliation(s)
- Antonia Howaldt
- Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Wei Zhang
- Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Shuya Deng
- Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Martina Becker
- Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Yanhong Hou
- Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Thomas Clahsen
- Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Felix Bock
- Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Claus Cursiefen
- Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
- CECAD, Cluster of Excellence, University of Cologne, Cologne, Germany
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248
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Tufail A, Al-Rifai J, Price WE, van de Merwe JP, Leusch FDL, Hai FI. Elucidating the performance of UV-based photochemical processes for the removal of trace organic contaminants: Degradation and toxicity evaluation. Chemosphere 2024; 350:140978. [PMID: 38135125 DOI: 10.1016/j.chemosphere.2023.140978] [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: 07/05/2023] [Revised: 12/10/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023]
Abstract
In this study, the performance of standalone ultraviolet (UV) photolysis and UV-based advanced oxidation processes (AOPs), namely, UV/hydrogen peroxide, UV/chlorine, UV/persulphate, and UV/permonosulphate, were investigated for the degradation of 31 trace organic contaminants (TrOCs). Under the tested conditions, standalone UV photolysis did not achieve effective removal of TrOCs. To improve the degradation efficiency of UV photolysis, four different oxidants were added individually to the test solution. The effect of these oxidants in the absence of UV irradiation was also explored and only chlorine showed promising degradation of some contaminants. During the chlorination of 31 investigated TrOCs, only six demonstrated greater than 50% degradation. The combined UV-based AOPs demonstrated much improved degradation (ranging from 65 to 100%) depending on TrOC-structure and oxidant concentration. The UV/hydrogen peroxide process showed similar degradation of TrOCs, irrespective of the functional groups (i.e., electron withdrawing groups, EWGs and electron donating groups, EDGs) present in their structures. Conversely, the UV/sulphate and UV/chlorine based processes achieved better degradation of the TrOCs with EDGs in their structures. TrOCs degradation improved up to 40% when oxidants concentrations were increased from 0.1 to 1 mM, and further increasing the concentration to 2 mM did not improve degradation. Toxicity evaluation using bioluminescence test (BLT assay) demonstrated that except for UV/hydrogen peroxide, all UV-based AOPs increased the toxicity of the treated effluent, indicating generation of toxic by-products. This study elucidates the performance of four different UV-based AOPs for the removal of commonly detected diverse TrOCs for the first time.
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Affiliation(s)
- Arbab Tufail
- Strategic Water Infrastructure Laboratory, School of Civil, Mining, Environmental and Architectural Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Jawad Al-Rifai
- Strategic Water Infrastructure Laboratory, School of Civil, Mining, Environmental and Architectural Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - William E Price
- Strategic Water Infrastructure Laboratory, School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Jason P van de Merwe
- Australian Rivers Institute and School of Environment and Science, Griffith University, Gold Coast, QLD, 4222, Australia
| | - Frederic D L Leusch
- Australian Rivers Institute and School of Environment and Science, Griffith University, Gold Coast, QLD, 4222, Australia
| | - Faisal I Hai
- Strategic Water Infrastructure Laboratory, School of Civil, Mining, Environmental and Architectural Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia.
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249
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Enokihara GH, Loures CCA, Izário Filho HJ, Alcântara MAK, Siqueira AF, Da Rós PCM, Napoleão DAS, Aguiar LGD. Kinetic modelling of total organic carbon degradation in dairy wastewater. Environ Technol 2024; 45:880-887. [PMID: 36170183 DOI: 10.1080/09593330.2022.2130103] [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: 05/28/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
Several treatment strategies have been proposed to minimize the environmental impact of dairy wastewaters. However, their complex and variable composition makes it difficult to predict the degradation kinetics of organic compounds. In this study, we used a mathematical approach to describe the kinetics of total organic carbon degradation in real dairy wastewater by photo-Fenton oxidation. The reactions were conducted under different ultraviolet light intensities, pH, temperature and Fenton reagent concentrations, obtaining a maximum TOC removal of 90.84%. The kinetic model was developed based on well-established photo-Fenton reactions. The present approach considers that account that small and large molecules of unknown contaminants are present in the effluent, and the smaller molecules are consumed first. The specific degradation rate (kd) was considered as an exponential function of total organic carbon conversion, comprising this effect of molecular size distribution on the treatment process. Fitting of experimental data to model predictions provided mean R2 values of 0.843-0.953.
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Affiliation(s)
- Gisella Harue Enokihara
- Department of Chemical Engineering, Engineering School of Lorena, University of São Paulo, Lorena, Brazil
| | | | - Helcio José Izário Filho
- Department of Chemical Engineering, Engineering School of Lorena, University of São Paulo, Lorena, Brazil
| | | | - Adriano Francisco Siqueira
- Department of Basic and Environmental Sciences, Engineering School of Lorena, University of São Paulo, Lorena, Brazil
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250
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Bichet MC, Gardette M, Das Neves B, Challant J, Erbs A, Roman V, Robin M, La Carbona S, Gantzer C, Boudaud N, Bertrand I. A new understanding of somatic coliphages belonging to the Microviridae family in urban wastewater. Water Res 2024; 249:120916. [PMID: 38043350 DOI: 10.1016/j.watres.2023.120916] [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: 09/06/2023] [Revised: 11/08/2023] [Accepted: 11/22/2023] [Indexed: 12/05/2023]
Abstract
Somatic coliphages (SC) and F-specific RNA coliphages (FRNAPH) have been included in regulations or guidelines by several developed countries as a way of monitoring water safety and the microbiological quality of shellfish harvesting waters. SC are highly diverse in their morphology, size and genome. The Microviridae family contains three genera of phages (Alphatrevirus, Gequatrovirus, and Sinsheimervirus), all having a capsid of similar morphology (icosahedral) and size (25-30 nm in diameter) to that of common pathogenic enteric viruses. Three PCR assays specific for each genus of Microviridae were designed to study these phages in raw and treated wastewater (WW) in order to gain knowledge about the diversity and prevalence of Microviridae among SC, as well as their inactivation and removal during WW treatments. Among the four wastewater treatment plants (WWTPs) monitored here, two WWTPs applied disinfection by UV light as tertiary treatment. First, we noticed that Microviridae represented 10 to 30 % of infectious SC in both raw and treated WW. Microviridae appeared to behave in the same way as all SC during these WW treatments. As expected, the highest inactivation, at least 4 log10, was achieved for infectious Microviridae and SC in both WWTPs using UV disinfection. PCR assays showed that the highest removal of Microviridae reached about 4 log10, but the phage removal can vary greatly between WWTPs using similar treatments. This work forms the basis for a broader evaluation of Microviridae as a viral indicator of water treatment efficiency and WW reuse.
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Affiliation(s)
- Marion C Bichet
- Food Safety Department, ACTALIA, Saint-Lô F-50000, France; Université de Lorraine, CNRS, LCPME, F-54000 Nancy, France
| | - Marion Gardette
- Food Safety Department, ACTALIA, Saint-Lô F-50000, France; Université de Lorraine, CNRS, LCPME, F-54000 Nancy, France
| | | | - Julie Challant
- Université de Lorraine, CNRS, LCPME, F-54000 Nancy, France
| | - Anaïs Erbs
- Food Safety Department, ACTALIA, Saint-Lô F-50000, France; Université de Lorraine, CNRS, LCPME, F-54000 Nancy, France
| | - Véronica Roman
- Université de Lorraine, CNRS, LCPME, F-54000 Nancy, France
| | - Maëlle Robin
- Food Safety Department, ACTALIA, Saint-Lô F-50000, France
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