1
|
Nasirzadeh N, Monazam Esmaeelpour M, Naseri N, Omari Shekaftik S. Improving ultraviolet protection properties of cotton textiles using Zinc oxide (ZnO) nanomaterials: an approach for controlling occupational and environmental exposures. Int J Environ Health Res 2024; 34:2067-2087. [PMID: 37173286 DOI: 10.1080/09603123.2023.2211529] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023]
Abstract
Ultraviolet (UV) radiation exposure is one of the most important risk factor among workers. it may stimulate health outcomes such as multiple skin injuries and blinding eye diseases. So, UV protection is mainly important for people who expose to it. Modification of cotton textiles by nanomaterials is a new approach to overcome this problem. So, the aim of this study is to review studies conducted on using ZnO nanoparticles for improving ultraviolet protection of cotton textiles. The search strategy was provided by cochrane guideline. 45 studies were regarded as appropriate. The results show that UPF for textiles has improved by coated ZnO. However, UPF was depended on the physicochemical characteristics of ZnO and textiles such as yarn structure, effect of woven fabric construction, fabric porosity, and impurity of textiles and laundering conditions. Also, plasma technology has improved UPF, it is recommended that more studies be done to achieve better results.
Collapse
Affiliation(s)
- Nafiseh Nasirzadeh
- Occupational Health Engineering, School of Public Health, Department of Occupational Health Engineering, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Monazam Esmaeelpour
- Occupational Health Engineering, School of Public Health, Department of Occupational Health Engineering, Tehran University of Medical Sciences, Tehran, Iran
| | - Neda Naseri
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Soqrat Omari Shekaftik
- Occupational Health Engineering, School of Public Health, Department of Occupational Health Engineering, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
2
|
Lockyer S, Spiro A, Berry S, He J, Loth S, Martinez-Inchausti A, Mellor D, Raats M, Sokolović M, Vijaykumar S, Stanner S. How do we differentiate not demonise - Is there a role for healthier processed foods in an age of food insecurity? Proceedings of a roundtable event. NUTR BULL 2023; 48:278-295. [PMID: 37164357 DOI: 10.1111/nbu.12617] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/27/2023] [Accepted: 04/05/2023] [Indexed: 05/12/2023]
Abstract
The 'ultra-processed food' (UPF) concept, with classification of foods by 'level of processing' rather than nutrient profiles, and its relationship with health outcomes, is currently a topic of debate among academics and increasingly referred to in the media. The British Nutrition Foundation convened a virtual roundtable on 6th July 2022 to gather views on the use of the term (and current definitions of) UPF for public health messaging, seeking to establish areas of consensus and disagreement and identify topics for further research. A small group of invited expert stakeholders attended, including representatives from academia, policy, behavioural science, communications, health, food science, retail and consumer interests. Participants' discussions clustered into cogent themes which included: problems with the use of definitions for UPF, the lack of causal evidence and defined mechanisms linking processing per se with poor health outcomes, and advice that may result in consumer confusion. There was agreement that many foods classified as UPF are high in fat, sugars and/or salt and public health messages should continue to focus on reducing these in the diet since it is unclear whether reported associations between high intakes of UPF and poor health reflect poorer dietary patterns (defined by nutrient intakes), and nutrient-health relationships are well established. Examples of misalignment were also highlighted (i.e. some foods are classified as UPF yet recommended in food-based dietary guidelines [featuring in healthy dietary patterns]). This raises challenges for consumer communication around UPF. Concern was also expressed about potential unintended consequences, particularly for vulnerable groups, where advice to avoid UPF could create stigma and guilt due to lack of time or facilities to prepare and cook meals from scratch. It could also impact on nutrient intakes, as some foods classified as UPF represent more affordable sources of important nutrients (e.g. packaged wholemeal bread). Discordance between the concept of UPF and current strategies to improve public health, such as reformulation, was also discussed. The group concluded that the use of the concept of UPF in UK policy (e.g. dietary guidelines) would be unhelpful at present. Overall, participants felt that it was more important to focus on providing practical advice around selection of healthier processed foods and making healthier foods more accessible rather than promoting the avoidance of UPF. The latter may act to demonise all foods classified as UPF by current definitions, including some affordable nutrient-dense foods.
Collapse
Affiliation(s)
| | | | | | - Jibin He
- Teesside University, Middlesbrough, UK
| | | | | | - Duane Mellor
- Aston Medical School, Aston University, Birmingham, UK
| | | | | | | | | |
Collapse
|
3
|
Woods N, Gilliland J, Seabrook JA. Applicability of the Socioecological Model for Understanding and Reducing Consumption of Ultra-Processed Foods in Canada. CAN J DIET PRACT RES 2023; 84:38-42. [PMID: 36413422 DOI: 10.3148/cjdpr-2022-027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Ultra-processed foods (UPFs) have become a major contributor to the diets of Canadians, with a recent report from Statistics Canada suggesting Canadians are consuming almost one-half of their calories from UPFs. Research has linked UPF consumption with increased risk for chronic diseases such as cardiovascular disease and type 2 diabetes, among others. This paper sought to investigate the popularity of UPFs, particularly among children and teens, utilizing the socioecological model as a framework to illustrate how influences at multiple levels (i.e., public policy, organizational, community, interpersonal, and individual) have played a role in the proliferation of UPFs. Evidence from previous studies is used to identify how factors at different levels may influence UPF consumption and discuss potential strategies for reducing UPF consumption. To meaningfully reduce UPF consumption among Canadians, all levels should be considered, with the goal of creating a healthier Canadian population.
Collapse
Affiliation(s)
- Nicolas Woods
- School of Health Studies, The University of Western Ontario, London, ON.,Department of Epidemiology & Biostatistics, The University of Western Ontario, London, ON.,Human Environments Analysis Laboratory, The University of Western Ontario, London, ON
| | - Jason Gilliland
- School of Health Studies, The University of Western Ontario, London, ON.,Department of Epidemiology & Biostatistics, The University of Western Ontario, London, ON.,Human Environments Analysis Laboratory, The University of Western Ontario, London, ON.,Children's Health Research Institute, London, ON.,Lawson Health Research Institute, London, ON.,Department of Paediatrics, The University of Western Ontario, London, ON.,Department of Geography and Environment, The University of Western Ontario, London, ON
| | - Jamie A Seabrook
- Department of Epidemiology & Biostatistics, The University of Western Ontario, London, ON.,Human Environments Analysis Laboratory, The University of Western Ontario, London, ON.,Children's Health Research Institute, London, ON.,Lawson Health Research Institute, London, ON.,Department of Paediatrics, The University of Western Ontario, London, ON.,School of Food and Nutritional Sciences, Brescia University College, London, ON
| |
Collapse
|
4
|
Grifoni D, Betti G, Bogi A, Bramanti L, Chiarugi A, Gozzini B, Morabito M, Picciolo F, Sabatini F, Miligi L. Protective Measures From Solar Ultraviolet Radiation for Beach Lifeguards in Tuscany (Italy): Shade and Clothing Strategies. Saf Health Work 2022; 13:421-428. [PMID: 36579014 PMCID: PMC9772484 DOI: 10.1016/j.shaw.2022.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/25/2022] [Accepted: 08/29/2022] [Indexed: 12/31/2022] Open
Abstract
Background The exposure to solar ultraviolet radiation is a significant risk factor generally underestimated by outdoor workers and employers. Several studies have pointed out that occupational solar exposure increased eye and skin diseases with a considerable impact on the lives and productivity of affected workers.The main purpose of this study was to evaluate the effectiveness against ultraviolet radiation of some measures recently undertaken for the protection of lifeguards in a coastal area of Tuscany. Methods Different shading structures (gazebos and beach umbrella) were tested during a sunny summer's day on a sandy beach by means of two radiometers; the UV protection offered by some T-shirts used by lifeguards was also tested in the laboratory with a spectrophotometer. Results The analysed shading structures strongly reduced the ultraviolet radiation by up to 90%, however a not always negligible diffuse radiation is also present in the shade, requiring further protective measures (T-shirt, sunglasses, sunscreen, etc.); the tested T-shirts showed a very good-excellent protection according to the Australian/New Zealand standard. Conclusion Results obtained in this study suggest how the adoption and dissemination of good practices, including those tested, could be particularly effective as a primary prevention for lifeguards who are subjected to very high levels of radiation for long periods.
Collapse
Affiliation(s)
- Daniele Grifoni
- CNR-IBE - Institute of Bioeconomy - National Research Council, Sesto Fiorentino, Italy,LaMMA Consortium, Sesto Fiorentino, Italy,Corresponding author. Institute of Bioeconomy - National Research Council, Via Madonna del Piano, 10, 50019, Sesto Fiorentino, Italy.
| | - Giulio Betti
- CNR-IBE - Institute of Bioeconomy - National Research Council, Sesto Fiorentino, Italy,LaMMA Consortium, Sesto Fiorentino, Italy
| | - Andrea Bogi
- Physical Agents Sector, Regional Public Health Laboratory, Siena, Italy
| | - Lucia Bramanti
- AUSL North West Tuscany, Hygiene and Health at Work Unit, Prevention Department, Versilia, Italy
| | - Alessandra Chiarugi
- Screening and Secondary Prevention Unit, Institut for Cancer Research, Prevention and Clinical Network (ISPRO), Florence, Italy
| | - Bernardo Gozzini
- CNR-IBE - Institute of Bioeconomy - National Research Council, Sesto Fiorentino, Italy,LaMMA Consortium, Sesto Fiorentino, Italy
| | - Marco Morabito
- CNR-IBE - Institute of Bioeconomy - National Research Council, Sesto Fiorentino, Italy
| | | | - Francesco Sabatini
- CNR-IBE - Institute of Bioeconomy - National Research Council, Sesto Fiorentino, Italy
| | - Lucia Miligi
- Environmental and Occupational Epidemiology Branch - Cancer Risk Factors and Lifestyle Epidemiology Unit, Institute for Cancer Research, Prevention and Clinical Network (ISPRO), Florence, Italy
| |
Collapse
|
5
|
Doyon VC, Khosravi-Hafshejani T, Richer V. An Added Benefit of Masks During the COVID-19 Pandemic: Ultraviolet Protection. J Cutan Med Surg 2022; 26:63-70. [PMID: 34320873 PMCID: PMC8750141 DOI: 10.1177/12034754211034478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 05/23/2021] [Accepted: 06/30/2021] [Indexed: 11/29/2022]
Abstract
The widespread use of masks during the COVID-19 pandemic presents a new avenue for protecting the lower half of the face from the harms of sun exposure. The increased social acceptability of masks, which may persist post-pandemic, has the potential to impact prevention of photosensitive disorders, photoaging, and skin cancer. The authors sought to review clinically relevant information on the ultraviolet (UV) shielding properties of masks. This synthesis of current research will help physicians counsel patients on optimal mask choices, from both dermatological and public health viewpoints. The variables impacting the UV protection of masks were reviewed, including fabric type, construction, porosity, and color. Other factors related to wear and use such as moisture, stretch, laundering, and sanitization are discussed in the context of the pandemic. Black, tightly woven, triple-layered polyester cloth masks were determined to be optimal for UV protection. The most protective choice against both SARS-CoV-2 and UV radiation is a medical mask worn underneath the aforementioned cloth mask. In order to preserve the filtration capacity of the fabric, masks should be changed once they have become moist. Washing cotton masks before first use in laundry detergents containing brightening agents increases their UV protection. Overall, cloth masks for the public that are safest against SARS-CoV-2 are generally also the most protective against UV damage. People should be encouraged to procure a high-quality mask to simultaneously help reduce the spread of SARS-CoV-2 and shield against sun exposure. Further investigation is needed on the UV-protective properties of medical masks.
Collapse
Affiliation(s)
- Valerie C. Doyon
- Faculty of Medicine, University of British Columbia, Vancouver,
BC, Canada
| | | | - Vincent Richer
- Department of Dermatology and Skin Science, University of
British Columbia, Vancouver, BC, Canada
- Pacific Derm, Vancouver, BC, Canada
| |
Collapse
|
6
|
Koozekonan AG, Esmaeilpour MRM, Kalantary S, Karimi A, Azam K, Golbabaei F. Fabrication and characterization of TiO 2 and MWCNT coated electrospinning nanofibers for UV protection properties. MethodsX 2021; 8:101354. [PMID: 34430255 PMCID: PMC8374361 DOI: 10.1016/j.mex.2021.101354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 03/27/2021] [Accepted: 04/11/2021] [Indexed: 12/04/2022] Open
Abstract
This paper aimed to fabricate UV protective nanofibers by the use of specific nanoparticles. The DMF/TiO2 (Titanium dioxide), DMF/MWCNT (Multi-Walled Carbon Nano Tubes), and DMF/MWCNT+TiO2 (MWCNT: TiO2 mass ratio= 1:1) solutions were transferred into a syringe with a stainless steel needle with gauge 21. The electrospinning process was performed for 3 h at the optimized conditions. The surface morphology of nanofibers was characterized by field emission scanning electron microscopy (FESEM). Fourier transform infrared spectroscopy (FTIR) was utilized to characterize functional groups of oxidized MWCNTs and investigate the successful load of nanoparticles at the fiber surface. The UV protection property of nanofibers was investigated by measuring UV rays' transmittance through the composite web. The data of Spectroscopy was used to compute the UV protection factor (UPF). (1) The effect of CNT,TiO2, and CNT+TiO2 nanoparticles on ultraviolet protection property was analyzed separately and simultaneously. (2) The different concentrations of nanoparticles, including 1,5,10, & 15 wt%, were used to fabricate UV protective nanocomposites. (3) The electrospinning condition was optimized as a 15 cm distance between the needle tip and collector, 20 KV voltage, 250 RPM drum rotation, and 1.2 ml/h feeding rate to access the best nanofibers.
Collapse
Affiliation(s)
- Aysa Ghasemi Koozekonan
- Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Saba Kalantary
- Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Karimi
- Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Kamal Azam
- Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Farideh Golbabaei
- Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
7
|
Ghanavatkar CW, Mishra VR, Sekar N. Benzothiazole-pyridone and benzothiazole-pyrazole clubbed emissive azo dyes and dyeing application on polyester fabric: UPF, biological, photophysical and fastness properties with correlative computational assessments. Spectrochim Acta A Mol Biomol Spectrosc 2020; 230:118064. [PMID: 31955124 DOI: 10.1016/j.saa.2020.118064] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 08/30/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
Positional isomers of benzothiazole-pyridone and benzothiazole-pyrazole containing disperse azo dyes are reported. These heterocyclic azo dyes are decorated with 'separate ESIPT core' and show emission in seven solvents of different polarity. After application on polyester fabric, "very good to excellent" light and washing fastness properties were observed. Thermal stability of 'dyed fabric' was analysed by sublimation fastness test- and found 'very good to excellent' ratings at 210 °C. Ultraviolet Protection Factor (UPF) analysis of four 'dyed fabric' indicates the blocking 96-97% of UV radiation. Dyes were found effective on gram positive and negative bacteria by agar diffusion method and all the 'dyed fabrics' also showed more than 92% or 94% reduction of S. aureus or K. pneumoniae respectively by 'AATCC 100' method. Structures of the dyes were optimized using Density Functional Theory (DFT) to deduce stable tautomeric form. Calculated HOMO-LUMO gap is then compared with antibacterial activities. Electrophilicity index and lightfastness property were also compared and found to have very good correlation.
Collapse
Affiliation(s)
- Chaitannya W Ghanavatkar
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400 019, Maharashtra, India
| | - Virendra R Mishra
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400 019, Maharashtra, India
| | - Nagaiyan Sekar
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400 019, Maharashtra, India.
| |
Collapse
|
8
|
Mishra VR, Ghanavatkar CW, Sekar N. UV protective heterocyclic disperse azo dyes: Spectral properties, dyeing, potent antibacterial activity on dyed fabric and comparative computational study. Spectrochim Acta A Mol Biomol Spectrosc 2019; 223:117353. [PMID: 31306957 DOI: 10.1016/j.saa.2019.117353] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 04/12/2019] [Revised: 06/28/2019] [Accepted: 07/07/2019] [Indexed: 06/10/2023]
Abstract
Disperse azo dyes are synthesized and characterized by 1H NMR, 13C NMR, LC-MS, Elemental analysis, UV-visible, and fluorescence spectroscopy methods. The azo dyes show absorption maxima in the range of 460-493 nm. Dye with benzothiazole moiety i.e. VM7a and VM8a show a bathochromic shift in absorption maxima of 90 and 26 nm respectively in a polar aprotic solvent (i.e. DMF, DMSO). The dyes show deep red emission in a polar aprotic solvent (i.e. DMF, DMSO) with a Stokes shift of 62 to 180 nm. The dyes are applied on polyester fabric and the dyed fabric exhibit excellent to a good wash and sublimation fastness property. They show a very good UPF rating and almost blocking 95 to 98% of harmful UV radiation. Antibacterial activity of dyed polyester fabric is assessed qualitatively and quantitatively by using AATCC 147 and 100 test method respectively. The dyed fabrics exhibit excellent antibacterial activities against S.aureus (Gram-positive) and K. pneumoniae (Gram-negative). DFT method was used to identify the stable conformer. HOMO-LUMO gap and global reactivity descriptors were calculated using DFT method and correlated with antibacterial activities and light fastness properties respectively.
Collapse
Affiliation(s)
- Virendra R Mishra
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400 019, Maharashtra, India
| | - Chaitannya W Ghanavatkar
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400 019, Maharashtra, India
| | - Nagaiyan Sekar
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400 019, Maharashtra, India.
| |
Collapse
|
9
|
Chen Y, Li X, Gan X, Qi J, Che B, Tai M, Gao S, Zhao W, Xu N, Hu Z. Fucoidan from Undaria pinnatifida Ameliorates Epidermal Barrier Disruption via Keratinocyte Differentiation and CaSR Level Regulation. Mar Drugs 2019; 17:E660. [PMID: 31771286 PMCID: PMC6950751 DOI: 10.3390/md17120660] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 11/22/2019] [Indexed: 02/06/2023] Open
Abstract
The epidermal barrier acts as a line of defense against external agents as well as helps to maintain body homeostasis. The calcium concentration gradient across the epidermal barrier is closely related to the proliferation and differentiation of keratinocytes (KCs), and the regulation of these two processes is the key to the repair of epidermal barrier disruption. In the present study, we found that fucoidan from Undaria pinnatifida (UPF) could promote the repair of epidermal barrier disruption in mice. The mechanistic study demonstrated that UPF could promote HaCaT cell differentiation under low calcium condition by up-regulating the expression of calcium-sensing receptor (CaSR), which could then lead to the activation of the Catenin/PLCγ1 pathway. Further, UPF could increase the expression of CaSR through activate the ERK and p38 pathway. These findings reveal the molecular mechanism of UPF in the repair of the epidermal barrier and provide a basis for the development of UPF into an agent for the repair of epidermal barrier repair.
Collapse
Affiliation(s)
- Yu Chen
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China; (Y.C.); (J.Q.)
| | - Xuenan Li
- Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China; (X.L.); (S.G.); (W.Z.)
| | - Xiaoshuang Gan
- Infinitus (China) Company Ltd, Guangzhou 510000, China; (X.G.); (B.C.); (M.T.)
| | - Junmei Qi
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China; (Y.C.); (J.Q.)
| | - Biao Che
- Infinitus (China) Company Ltd, Guangzhou 510000, China; (X.G.); (B.C.); (M.T.)
| | - Meiling Tai
- Infinitus (China) Company Ltd, Guangzhou 510000, China; (X.G.); (B.C.); (M.T.)
| | - Shuang Gao
- Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China; (X.L.); (S.G.); (W.Z.)
| | - Wengang Zhao
- Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China; (X.L.); (S.G.); (W.Z.)
| | - Nuo Xu
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China; (Y.C.); (J.Q.)
| | - Zhenlin Hu
- Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China; (X.L.); (S.G.); (W.Z.)
| |
Collapse
|
10
|
Ohtani M, Wachter A. NMD-Based Gene Regulation-A Strategy for Fitness Enhancement in Plants? Plant Cell Physiol 2019; 60:1953-1960. [PMID: 31111919 DOI: 10.1093/pcp/pcz090] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 04/22/2019] [Indexed: 05/20/2023]
Abstract
Post-transcriptional RNA quality control is a vital issue for all eukaryotes to secure accurate gene expression, both on a qualitative and quantitative level. Among the different mechanisms, nonsense-mediated mRNA decay (NMD) is an essential surveillance system that triggers degradation of both aberrant and physiological transcripts. By targeting a substantial fraction of all transcripts for degradation, including many alternative splicing variants, NMD has a major impact on shaping transcriptomes. Recent progress on the transcriptome-wide profiling and physiological analyses of NMD-deficient plant mutants revealed crucial roles for NMD in gene regulation and environmental responses. In this review, we will briefly summarize our current knowledge of the recognition and degradation of NMD targets, followed by an account of NMD's regulation and physiological functions. We will specifically discuss plant-specific aspects of RNA quality control and its functional contribution to the fitness and environmental responses of plants.
Collapse
Affiliation(s)
- Misato Ohtani
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Andreas Wachter
- Institute for Molecular Physiology (imP), University of Mainz, Johannes von M�ller-Weg 6, Mainz, Germany
| |
Collapse
|
11
|
Chiam NC, Fujimura T, Sano R, Akiyoshi N, Hiroyama R, Watanabe Y, Motose H, Demura T, Ohtani M. Nonsense-Mediated mRNA Decay Deficiency Affects the Auxin Response and Shoot Regeneration in Arabidopsis. Plant Cell Physiol 2019; 60:2000-2014. [PMID: 31386149 DOI: 10.1093/pcp/pcz154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 11/29/2018] [Accepted: 07/21/2019] [Indexed: 06/10/2023]
Abstract
Plants generally possess a strong ability to regenerate organs; for example, in tissue culture, shoots can regenerate from callus, a clump of actively proliferating, undifferentiated cells. Processing of pre-mRNA and ribosomal RNAs is important for callus formation and shoot regeneration. However, our knowledge of the roles of RNA quality control via the nonsense-mediated mRNA decay (NMD) pathway in shoot regeneration is limited. Here, we examined the shoot regeneration phenotypes of the low-beta-amylase1 (lba1)/upstream frame shift1-1 (upf1-1) and upf3-1 mutants, in which the core NMD components UPF1 and UPF3 are defective. These mutants formed callus from hypocotyl explants normally, but this callus behaved abnormally during shoot regeneration: the mutant callus generated numerous adventitious root structures instead of adventitious shoots in an auxin-dependent manner. Quantitative RT-PCR and microarray analyses showed that the upf mutations had widespread effects during culture on shoot-induction medium. In particular, the expression patterns of early auxin response genes, including those encoding AUXIN/INDOLE ACETIC ACID (AUX/IAA) family members, were significantly affected in the upf mutants. Also, the upregulation of shoot apical meristem-related transcription factor genes, such as CUP-SHAPED COTYLEDON1 (CUC1) and CUC2, was inhibited in the mutants. Taken together, these results indicate that NMD-mediated transcriptomic regulation modulates the auxin response in plants and thus plays crucial roles in the early stages of shoot regeneration.
Collapse
Affiliation(s)
- Nyet-Cheng Chiam
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Tomoyo Fujimura
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Ryosuke Sano
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Nobuhiro Akiyoshi
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Ryoko Hiroyama
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Yuichiro Watanabe
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Hiroyasu Motose
- Department of Biological Science, Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Taku Demura
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Misato Ohtani
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| |
Collapse
|
12
|
Downs NJ, Butler HJ, Baldwin L, Parisi AV, Amar A, Vanos J, Harrison S. A site-specific standard for comparing dynamic solar ultraviolet protection characteristics of established tree canopies. MethodsX 2019; 6:1683-1693. [PMID: 31406685 PMCID: PMC6682329 DOI: 10.1016/j.mex.2019.07.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 07/12/2019] [Indexed: 11/29/2022] Open
Abstract
A standardised procedure for making fair and comparable assessments of the ultraviolet protection of an established tree canopy that takes into account canopy movement and the changing position of the sun is presented for use by government, planning, and environmental health authorities. The technique utilises video image capture and replaces the need for measurement by ultraviolet radiometers for surveying shade quality characteristics of trees growing in public parks, playgrounds and urban settings. The technique improves upon tree shade assessments that may be based upon single measurements of the ultraviolet irradiance observed from a fixed point of view. The presented technique demonstrates how intelligent shade audits can be conducted without the need for specialist equipment, enabling the calculation of the Shade Protection Index (SPI) and Ultraviolet Protection Factor (UPF) for any discreet time interval and over a full calendar year. Tree shade UPF measurements are presented using video capture analysis of moving canopies A standard method for making accurate assessments of tree shade has been developed Tree shade comparisons are made without the need for specialist equipment
Collapse
Affiliation(s)
- N J Downs
- Centre for Applied Climate Sciences, University of Southern Queensland, Toowoomba, Australia
| | - H J Butler
- Centre for Applied Climate Sciences, University of Southern Queensland, Toowoomba, Australia
| | - L Baldwin
- Queensland University of Technology, Faculty of Health, Brisbane, Australia
| | - A V Parisi
- Centre for Applied Climate Sciences, University of Southern Queensland, Toowoomba, Australia
| | - A Amar
- School of Agricultural, Computational and Environmental Sciences, University of Southern Queensland, Toowoomba, Australia
| | - J Vanos
- Arizona State University, School of Sustainability, Tempe, AZ, United States
| | - S Harrison
- School of Agricultural, Computational and Environmental Sciences, University of Southern Queensland, Toowoomba, Australia
| |
Collapse
|
13
|
Noman MT, Wiener J, Saskova J, Ashraf MA, Vikova M, Jamshaid H, Kejzlar P. In-situ development of highly photocatalytic multifunctional nanocomposites by ultrasonic acoustic method. Ultrason Sonochem 2018; 40:41-56. [PMID: 28946440 DOI: 10.1016/j.ultsonch.2017.06.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 06/02/2017] [Accepted: 06/26/2017] [Indexed: 06/07/2023]
Abstract
Cotton-titania nanocomposites with multifunctional properties were synthesized through ultrasonic acoustic method (UAM). Ultrasonic irradiations were used as a potential tool to develop cotton-titania (CT) nanocomposites at low temperature in the presence of titanium tetrachloride and isopropanol. The synthesized samples were characterized by XRD, SEM, EDX and ICP-OES methods. Functional properties i.e. Ultraviolet protection factor (UPF), self-cleaning, washing durability, antimicrobial and tensile strength of the CT nanocomposites were evaluated by different methods. Central composite design and response surface methodology were employed to evaluate the effects of selected variables on responses. The results confirm the simultaneous formation and incorporation of anatase TiO2 with average crystallite size of 4nm on cotton fabric with excellent photocatalytic properties. The sustained self-cleaning efficiency of CT nanocomposites even after 30 home launderings indicates their excellent washing durability. Significant effects were obtained during statistical analysis for selected variables on the formation and incorporation of TiO2 nanoparticles (NPs) on cotton and photocatalytic properties of the CT nanocomposites.
Collapse
Affiliation(s)
- Muhammad Tayyab Noman
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Czech Republic.
| | - Jakub Wiener
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Czech Republic
| | - Jana Saskova
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Czech Republic
| | - Muhammad Azeem Ashraf
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Czech Republic; Department of Fibre and Textile Technology, University of Agriculture, Faisalabad, Pakistan
| | - Martina Vikova
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Czech Republic
| | - Hafsa Jamshaid
- Department of Fabric Manufacturing, National Textile University, Faisalabad, Pakistan
| | - Pavel Kejzlar
- Department of Material Science, Faculty of Mechanical Engineering, Technical University of Liberec, Czech Republic
| |
Collapse
|
14
|
Emam HE, Abdelhameed RM. Anti-UV Radiation Textiles Designed by Embracing with Nano-MIL (Ti, In)-Metal Organic Framework. ACS Appl Mater Interfaces 2017; 9:28034-28045. [PMID: 28745870 DOI: 10.1021/acsami.7b07357] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Protective textiles against harmful solar radiation are quite important materials for outdoor workers to secure their skin from several diseases. Current report focuses on production of anti-ultraviolet radiation (UVR) textiles by incorporation of nano-metal-organic frameworks (n-MOFs). Two different MIL-MOFs, namely, MIL-68(In)-NH2 and MIL-125(Ti)-NH2, were immediately formed inside natural textiles (cotton and silk) matrix in nano size using quite simple and one-pot process. The formation of n-MIL-MOFs inside textiles were confirmed by using electron microscope and X-ray diffraction. Different size and morphology were seen depending on textile type reflecting the textiles' chemical composition role in the nature of prepared MIL-MOFs. For MIL-68(In)-NH2, particles with size distribution of 70.6-44.5 nm in cotton and 81.3-52.2 nm in silk were detected, while crystalline disc of MIL-125(Ti)-NH2 was clearly seen inside textiles. The natural textiles exhibited full UVR blocking after modification, and the UV protection factor (UPF) was linearly proportional with MIL-MOFs and metal contents. Whatever metal type, direct incorporation of MIL-MOF contents greater than or equal to 10.4 g/kg was sufficient to attain excellent UV blocking property. Although 38.5-41.0% of MIL-MOFs was lost during five washings, the washed samples showed very good blocking rate (UPF = 26.7-36.2) supporting good laundering durability.
Collapse
Affiliation(s)
- Hossam E Emam
- Department of Pretreatment and Finishing of Cellulosic Fibers, Textile Research Division and ‡Applied Organic Chemistry Department, Chemical Industries Research Division, National Research Centre , Scopus affiliation Idaho 60014618, 33 EL Buhouth Street, Dokki, Giza 12622, Egypt
| | - Reda M Abdelhameed
- Department of Pretreatment and Finishing of Cellulosic Fibers, Textile Research Division and ‡Applied Organic Chemistry Department, Chemical Industries Research Division, National Research Centre , Scopus affiliation Idaho 60014618, 33 EL Buhouth Street, Dokki, Giza 12622, Egypt
| |
Collapse
|
15
|
Abstract
Nonsense-mediated mRNA Decay (NMD) is a eukaryotic quality-control mechanism that governs the stability of both aberrant and normal transcripts. Although plant and mammalian NMD share great similarity, they differ in certain mechanistic and regulatory aspects. Whereas SMG6 (from Caenorhabditis elegans 'suppressor with morphogenetic effect on genitalia')-catalyzed endonucleolytic cleavage is a prominent step in mammalian NMD, plant NMD targets are degraded by an SMG7-induced exonucleolytic pathway. Both mammalian and plant NMD are downregulated by stress, thereby enhancing the expression of defense response genes. However, the target genes and processes affected differ. Several plant and mammalian NMD factors are regulated by negative feedback-loops. However, while the loop regulating UPF3 (up-frameshift 3) expression in not vital for mammalian NMD, the sensitivity of UPF3 to NMD is crucial for the overall regulation of plant NMD.
Collapse
Affiliation(s)
- Orit Shaul
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel.
| |
Collapse
|