1
|
Jiang T, Chen S, Xu J, Zhang Y, Fu H, Ling Q, Xu Y, Chu X, Wang R, Hu L, Li H, Huang W, Bian L, Zhao P, Wei F. Superporous sponge prepared by secondary network compaction with enhanced permeability and mechanical properties for non-compressible hemostasis in pigs. Nat Commun 2024; 15:5460. [PMID: 38937462 PMCID: PMC11211411 DOI: 10.1038/s41467-024-49578-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 06/12/2024] [Indexed: 06/29/2024] Open
Abstract
Developing superporous hemostatic sponges with simultaneously enhanced permeability and mechanical properties remains challenging but highly desirable to achieve rapid hemostasis for non-compressible hemorrhage. Typical approaches to improve the permeability of hemostatic sponges by increasing porosity sacrifice mechanical properties and yield limited pore interconnectivity, thereby undermining the hemostatic efficacy and subsequent tissue regeneration. Herein, we propose a temperature-assisted secondary network compaction strategy following the phase separation-induced primary compaction to fabricate the superporous chitosan sponge with highly-interconnected porous structure, enhanced blood absorption rate and capacity, and fatigue resistance. The superporous chitosan sponge exhibits rapid shape recovery after absorbing blood and maintains sufficient pressure on wounds to build a robust physical barrier to greatly improve hemostatic efficiency. Furthermore, the superporous chitosan sponge outperforms commercial gauze, gelatin sponges, and chitosan powder by enhancing hemostatic efficiency, cell infiltration, vascular regeneration, and in-situ tissue regeneration in non-compressible organ injury models, respectively. We believe the proposed secondary network compaction strategy provides a simple yet effective method to fabricate superporous hemostatic sponges for diverse clinical applications.
Collapse
Affiliation(s)
- Tianshen Jiang
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Sirong Chen
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Jingwen Xu
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Yuxiao Zhang
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Hao Fu
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Qiangjun Ling
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Yan Xu
- Department of Orthopedic Surgery, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, 518107, China
| | - Xiangyu Chu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ruinan Wang
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Liangcong Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hao Li
- Department of Joint Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Weitong Huang
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Liming Bian
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, 511442, China.
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China.
- Guangdong Provincial Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, 510006, China.
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, China.
| | - Pengchao Zhao
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, 511442, China.
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China.
- Guangdong Provincial Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, 510006, China.
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, China.
| | - Fuxin Wei
- Department of Orthopedic Surgery, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, 518107, China.
- Shenzhen Key Laboratory of Bone Tissue Repair and Translational Research, Shenzhen, 518107, China.
| |
Collapse
|
2
|
Ko M, Jang T, Yoon S, Lee J, Choi JH, Choi JW, Park JA. Synthesis of recyclable and light-weight graphene oxide/chitosan/genipin sponges for the adsorption of diclofenac, triclosan, and microplastics. CHEMOSPHERE 2024; 356:141956. [PMID: 38604514 DOI: 10.1016/j.chemosphere.2024.141956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/16/2024] [Accepted: 04/07/2024] [Indexed: 04/13/2024]
Abstract
Emerging micropollutants, such as pharmaceuticals and microplastics (MPs), have become a pressing water environmental concern. The aim of this study is to synthesize chitosan sponges using graphene oxide (GO) and genipin (GP) for the removal of pharmaceuticals (diclofenac (DCF) and triclosan (TCS)) and MPs, verify their adsorption mechanisms, evaluate the effects of temperature, pH, and salinity on their adsorption capacities, and determine their reusability. The GO5/CS/GP sponge exhibited a macroporous nature (porosity = 95%, density = 32.6 mg/cm3). GO and cross-linker GP enhanced the adsorption of DCF, TCS, and polystyrene (PS) MPs onto the CS sponges. The adsorption of DCF, TCS, and PS MPs involved multiple steps: surface diffusion and pore diffusion of the sponge. The adsorption isotherms demonstrated that Langmuir model was the most fitted well model to explain adsorption of TCS (qm = 7.08 mg/g) and PS MPs (qm = 7.42 mg/g) on GO5/CS/GP sponge, while Freundlich model suited for DCF adsorption (qm = 48.58 mg/g). DCF adsorption was thermodynamically spontaneous and endothermic; however, the adsorption of TCS and PS MPs was exothermic (283-313 K). The optimal pH was 5.5-7 due to the surface charge of the GO5/CS/GP sponge (pHzpc = 5.76) and ionization of DCF, TCS, and PS MPs. As the salinity increased, DCF removal efficiency drastically decreased due to the weakening of electrostatic interactions; however, TCS removal efficiency remained stable because TCS adsorption was mainly caused by hydrophobic and π-π interactions rather than electrostatic interaction. The removal of PS MPs was enhanced by the electrostatic screening effects of high Na+ ions. PS nanoplastics (average size = 26 nm) were removed by the GO5/CS/GP sponge at a rate of 73.0%, which was better than that of PS MPs (41.5%). In addition, the GO5/CS/GP sponge could be recycled over five adsorption-desorption cycles.
Collapse
Affiliation(s)
- Mingi Ko
- Department of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Taesoon Jang
- Department of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Soyeong Yoon
- Department of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Jooyoung Lee
- Department of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Jin-Hyuk Choi
- Department of Integrated Energy and Infra System, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Jae-Woo Choi
- Water Cycle Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea; Division of Energy & Environment Technology, KIST School, Korea University of Science and Technology, Seoul, 02792, Republic of Korea
| | - Jeong-Ann Park
- Department of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea; Department of Integrated Energy and Infra System, Kangwon National University, Chuncheon 24341, Republic of Korea.
| |
Collapse
|
3
|
Lee JS, Cho SH, Choi WJ, Choi YW. Enhancing the color gamut of waveguide displays for augmented reality head-mounted displays through spatially modulated diffraction grating. Sci Rep 2024; 14:8821. [PMID: 38627454 PMCID: PMC11021499 DOI: 10.1038/s41598-024-59231-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 04/08/2024] [Indexed: 04/19/2024] Open
Abstract
Augmented reality (AR) applications require displays with an extended color gamut to facilitate the presentation of increasingly immersive content. The waveguide (WG) display technology, which is typical AR demonstration method, is a critical constraint on the color gamut of AR systems because of the intrinsic properties of the holographic optical elements (HOEs) used in this technology. To overcome this limitation, we introduce a method of spatially modulated diffractive optics that can expand the color gamut of HOE-based WG displays. This approach involves spatial modulation using sub-pixelized HOEs, which enables the diffraction of red, green, and blue rays along identical directions. The proposed structure considers both the characteristics of the HOE and the wavelength sensitivity of the observer to optimize the color gamut. Consequently, an expanded color gamut was achieved. The results of the theoretical and experimental analyses substantiate the effectiveness and practicality of this method in enhancing the color gamut of HOE-based WG displays. Thus, the proposed method can facilitate the implementation of more immersive AR displays.
Collapse
Affiliation(s)
- Jae-Sang Lee
- Department of Intelligent Semiconductor Engineering, Chung-Ang University, Seoul, South Korea
| | - Seong-Hyeon Cho
- Department of Intelligent Semiconductor Engineering, Chung-Ang University, Seoul, South Korea
| | - Woo June Choi
- Department of Intelligent Semiconductor Engineering, Chung-Ang University, Seoul, South Korea.
- Department of Electrical and Electronics Engineering, Chung-Ang University, Seoul, South Korea.
| | - Young-Wan Choi
- Department of Intelligent Semiconductor Engineering, Chung-Ang University, Seoul, South Korea.
- Department of Electrical and Electronics Engineering, Chung-Ang University, Seoul, South Korea.
| |
Collapse
|
4
|
Hani R, Khayat L, Rahman AA, Alaaeddine N. Effect of stem cell secretome in skin rejuvenation: a narrative review. Mol Biol Rep 2023; 50:7745-7758. [PMID: 37452901 DOI: 10.1007/s11033-023-08622-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 06/21/2023] [Indexed: 07/18/2023]
Abstract
PURPOSE Cutaneous aging is an inevitable biological process that develops over time due to cumulative cellular and molecular changes caused by exposure to intrinsic (chronological aging) and extrinsic (photo-aging) factors on the skin. Skin aging is characterized by a decline in the body's capability to sustain senescence, dermal cell apoptosis, and homeostasis. Stem cell secretions (secretome) are defined as the total set of dynamically overlapping paracrine soluble growth factors, cytokines, chemokines, angiogenic factors, extracellular matrix proteins, and antimicrobial peptides known to be responsible for tissue rejuvenation, regeneration, homeostasis, and immunomodulation. METHODS In this review, we summarized the molecular and regulatory mechanism of the secretome in preventing the skin aging process, as well as its capacity in inducing skin rejuvenation. Furthermore, we illustrated secretome efficiency as an anti-aging therapeutic strategy based on in vitro and in vivo published studies. RESULTS In all reviewed publications, the secretome has been proven to be the most effective treatment for aged skin, capable of reversing the aging process through the action of cytokines, growth factors, and collagen, which are its primary components. The reported mechanism of action involves modulating the signaling pathways of aging and replenishing the skin with collagen, fibronectin, and elastin, ultimately resulting in skin renewal and rejuvenation. CONCLUSION In conclusion, compared to available treatments, the secretome shows great promise as an anti-aging therapy.
Collapse
Affiliation(s)
- Rita Hani
- Faculty of Health Sciences, University of Balamand, Beirut, Lebanon
| | | | | | | |
Collapse
|
5
|
Gull N, Arshad F, Naikoo GA, Hassan IU, Pedram MZ, Ahmad A, Aljabali AAA, Mishra V, Satija S, Charbe N, Negi P, Goyal R, Serrano-Aroca Á, Al Zoubi MS, El-Tanani M, Tambuwala MM. Recent Advances in Anticancer Activity of Novel Plant Extracts and Compounds from Curcuma longa in Hepatocellular Carcinoma. J Gastrointest Cancer 2023; 54:368-390. [PMID: 35285010 PMCID: PMC8918363 DOI: 10.1007/s12029-022-00809-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/20/2022] [Indexed: 02/06/2023]
Abstract
PURPOSE Among all forms of cancers, hepatocellular carcinoma (HCC) is the fifth most common cancer worldwide. There are several treatment options for HCC ranging from loco-regional therapy to surgical treatment. Yet, there is high morbidity and mortality. Recent research focus has shifted towards more effective and less toxic cancer treatment options. Curcumin, the active ingredient in the Curcuma longa plant, has gained widespread attention in recent years because of its multifunctional properties as an antioxidant, anti-inflammatory, antimicrobial, and anticancer agent. METHODS A systematic search of PubMed, Embase and Google Scholar was performed for studies reporting incidence of HCC, risk factors associated with cirrhosis and experimental use of curcumin as an anti-cancer agent. RESULTS This review exclusively encompasses the anti-cancer properties of curcumin in HCC globally and it's postulated molecular targets of curcumin when used against liver cancers. CONCLUSIONS This review is concluded by presenting the current challenges and future perspectives of novel plant extracts derived from C. longa and the treatment options against cancers.
Collapse
Affiliation(s)
- Nighat Gull
- School of Sciences, Maulana Azad National Urdu University, 32, Hyderabad, TS, India
| | - Fareeha Arshad
- Department of Biochemistry, Aligarh Muslim University, U.P., India
| | - Gowhar A Naikoo
- Department of Mathematics and Sciences, College of Arts and Applied Sciences, Dhofar University, Salalah, Sultanate of Oman.
| | - Israr Ul Hassan
- College of Engineering, Dhofar University, Salalah, Sultanate of Oman
| | - Mona Zamani Pedram
- Faculty of Mechanical Engineering-Energy Division, K. N. Toosi University of Technology, P.O. Box: 19395-1999, No. 15-19, Pardis St., Mollasadra Ave., Vanak Sq., Tehran, 1999 143344, Iran
| | - Arif Ahmad
- School of Sciences, Maulana Azad National Urdu University, 32, Hyderabad, TS, India
| | - Alaa A A Aljabali
- Department of Pharmaceutics & Pharmaceutical Technology, Yarmouk University, Irbid, 21163, Jordan
| | - Vijay Mishra
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Saurabh Satija
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Nitin Charbe
- Department of Pharmaceutical Sciences, Rangel College of Pharmacy, Texas A&M University, Kingsville, TX, 78363, USA
| | - Poonam Negi
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology & Management Sciences, Solan, 173229, India
| | - Rohit Goyal
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology & Management Sciences, Solan, 173229, India
| | - Ángel Serrano-Aroca
- Biomaterials & Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia, San Vicente Mártir, 46001, Valencia, Spain
| | - Mazhar S Al Zoubi
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid, Jordan
| | - Mohamed El-Tanani
- Pharmacological and Diagnostic Research Centre, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, Jordan
| | - Murtaza M Tambuwala
- School of Pharmacy & Pharmaceutical Sciences, Ulster University, Northern Ireland, Coleraine, BT52 1SA, County Londonderry, UK.
| |
Collapse
|
6
|
Saheed IO, Yusof ENM, Oh WD, Hanafiah MAKM, Suah FBM. Fabrication of chitosan@activated carbon composites in EmimAc for Cd(II) adsorption from aqueous solution: Experimental, optimization and DFT study. Int J Biol Macromol 2023; 242:124798. [PMID: 37178882 DOI: 10.1016/j.ijbiomac.2023.124798] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 04/18/2023] [Accepted: 05/06/2023] [Indexed: 05/15/2023]
Abstract
Adsorption efficiency of a duo-material blend featuring the fabrication of modified chitosan adsorbents (powder (C-emimAc), bead (CB-emimAc) and sponge (CS-emimAc)) for the removal of Cd(II) from aqueous solution was investigated. The chitosan@activated carbon (Ch/AC) blend was developed in a green ionic solvent, 1-ethyl-3-methyl imidazolium acetate (EmimAc) and its characteristics was examined using FTIR, SEM, EDX, BET and TGA. The possible mechanism of interaction between the composites and Cd(II) was also predicted using the density functional theory (DFT) analysis. The interactions of various blend forms (C-emimAc, CB-emimAc and CS-emimAc) with Cd(II) gave better adsorption at pH 6. The composites also present excellent chemical stability in both acidic and basic conditions. The monolayer adsorption capacities obtained (under the condition 20 mg/L [Cd], adsorbent dosage 5 mg, contact time 1 h) for the CB-emimAc (84.75 mg/g) > C-emimAc (72.99 mg/g) > CS-emimAc (55.25 mg/g), as this was supported by their order of increasing BET surface area (CB-emimAc (120.1 m2/g) > C-emimAc (67.4 m2/g) > CS-emimAc (35.3 m2/g)). The feasible adsorption interactions between Cd(II) and Ch/AC occurs through the O-H and N-H groups of the composites, as supported by DFT analysis in which an electrostatic interactions was predicted as the dominant force. The interaction energy (-1309.35 eV) calculated via DFT shows that the Ch/AC with amino (-NH) and hydroxyl (-OH) groups are more effective with four significant electrostatic interactions with the Cd(II) ion. The various form of Ch/AC composites developed in EmimAc possess good adsorption capacity and stability for the adsorption Cd(II).
Collapse
Affiliation(s)
- Ismaila Olalekan Saheed
- Green Analytical Chemistry Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia; Department of Chemistry and Industrial Chemistry, Kwara State University, Malete, P.M.B 1530 Ilorin, Nigeria
| | - Enis Nadia Md Yusof
- Chemistry Section, School of Distance Education, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia
| | - Wen-Da Oh
- Green Analytical Chemistry Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia
| | | | - Faiz Bukhari Mohd Suah
- Green Analytical Chemistry Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia.
| |
Collapse
|
7
|
Caamal-Herrera I, Erreguin-Isaguirre MB, León-Buitimea A, Morones-Ramírez JR. Synthesis and Design of a Synthetic-Living Material Composed of Chitosan, Calendula officinalis Hydroalcoholic Extract, and Yeast with Applications as a Biocatalyst. ACS OMEGA 2023; 8:12716-12729. [PMID: 37065078 PMCID: PMC10099135 DOI: 10.1021/acsomega.2c07847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/15/2023] [Indexed: 06/19/2023]
Abstract
Design and development of materials that couple synthetic and living components allow taking advantage of the complexity of biological systems within a controlled environment. However, their design and fabrication represent a challenge for material scientists since it is necessary to synthesize synthetic materials with highly specialized biocompatible and physicochemical properties. The design of synthetic-living materials (vita materials) requires materials capable of hosting cell ingrowth and maintaining cell viability for extended periods. Vita materials offer various advantages, from simplifying product purification steps to controlling cell metabolic activity and improving the resistance of biological systems to external stress factors, translating into reducing bioprocess costs and diversifying their industrial applications. Here, chitosan sponges, functionalized with Calendula officinalis hydroalcoholic extract, were synthesized using the freeze-drying method; they showed small pore sizes (7.58 μm), high porosity (97.95%), high water absorption (1695%), and thermal stability, which allows the material to withstand sterilization conditions. The sponges allowed integration of 58.34% of viable Saccharomyces cerevisiae cells, and the cell viability was conserved 12 h post-process (57.14%) under storage conditions [refrigerating temperature (4 °C) and without a nutrient supply]. In addition, the synthesized vita materials conserved their biocatalytic activity after 7 days of the integration process, which was evaluated through glucose consumption and ethanol production. The results in this paper describe the synthesis of complex vita materials and demonstrate that biochemically modified chitosan sponges can be used as a platform material to host living and metabolically active yeast with diverse applications as biocatalysts.
Collapse
Affiliation(s)
- Isabel
O. Caamal-Herrera
- School
of Chemistry, Autonomous University of Nuevo
Leon (UANL), San Nicolas de los
Garza, Nuevo Leon 66455, Mexico
- Applied
Microbiology Department, NanoBiotechnology Research Group, Research
Center on Biotechnology and Nanotechnology, School of Chemical Sciences, Autonomous University of Nuevo Leon, PIIT, Km 10 Autopista al Aeropuerto Mariano
Escobedo, Apodaca, Nuevo
Leon 66629, Mexico
| | - Mariana B. Erreguin-Isaguirre
- School
of Chemical Engineering Pharmaceutics, Technological
University of San Juan del Rio, Av. La Palma No. 125, Col. Vista Hermosa, San Juan del Rio, Queretaro 76800, Mexico
| | - Angel León-Buitimea
- School
of Chemistry, Autonomous University of Nuevo
Leon (UANL), San Nicolas de los
Garza, Nuevo Leon 66455, Mexico
- Applied
Microbiology Department, NanoBiotechnology Research Group, Research
Center on Biotechnology and Nanotechnology, School of Chemical Sciences, Autonomous University of Nuevo Leon, PIIT, Km 10 Autopista al Aeropuerto Mariano
Escobedo, Apodaca, Nuevo
Leon 66629, Mexico
| | - José R. Morones-Ramírez
- School
of Chemistry, Autonomous University of Nuevo
Leon (UANL), San Nicolas de los
Garza, Nuevo Leon 66455, Mexico
- Applied
Microbiology Department, NanoBiotechnology Research Group, Research
Center on Biotechnology and Nanotechnology, School of Chemical Sciences, Autonomous University of Nuevo Leon, PIIT, Km 10 Autopista al Aeropuerto Mariano
Escobedo, Apodaca, Nuevo
Leon 66629, Mexico
| |
Collapse
|
8
|
Lauster T, Mauel A, Herrmann K, Veitengruber V, Song Q, Senker J, Retsch M. From Chitosan to Chitin: Bio-Inspired Thin Films for Passive Daytime Radiative Cooling. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2206616. [PMID: 36793085 PMCID: PMC10104647 DOI: 10.1002/advs.202206616] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/05/2023] [Indexed: 06/18/2023]
Abstract
Passive radiative daytime cooling is an emerging technology contributing to carbon-neutral heat management. Optically engineered materials with distinct absorption and emission properties in the solar and mid-infrared range are at the heart of this technology. Owing to their low emissive power of about 100 W m-2 during daytime, substantial areas need to be covered with passive cooling materials or coatings to achieve a sizeable effect on global warming. Consequently, biocompatible materials are urgently needed to develop suitable coatings with no adverse environmental impact. It is shown how chitosan films with different thicknesses can be produced from slightly acidic aqueous solutions. The conversion to their insoluble form chitin in the solid state is demonstrated and the conversion is monitored with infrared (IR) and NMR spectroscopy. In combination with a reflective backing material, the films show below-ambient temperature cooling capabilities with a suitable emissivity in the mid-IR region and low solar absorption of 3.1-6.9%, depending on the film thickness. This work highlights the potential of chitosan and chitin as widely available biocompatible polymers for passive radiative cooling applications.
Collapse
Affiliation(s)
- Tobias Lauster
- Department of ChemistryPhysical Chemistry IUniversity of BayreuthUniversitätsstraße 3095447BayreuthGermany
| | - Anika Mauel
- Department of ChemistryInorganic Chemistry III and Northern Bavarian NMR CenterUniversity of Bayreuth95447Universitätsstraße 30BayreuthGermany
| | - Kai Herrmann
- Department of ChemistryPhysical Chemistry IUniversity of BayreuthUniversitätsstraße 3095447BayreuthGermany
| | - Viktoria Veitengruber
- Department of ChemistryPhysical Chemistry IUniversity of BayreuthUniversitätsstraße 3095447BayreuthGermany
| | - Qimeng Song
- Department of ChemistryPhysical Chemistry IUniversity of BayreuthUniversitätsstraße 3095447BayreuthGermany
| | - Jürgen Senker
- Department of ChemistryInorganic Chemistry III and Northern Bavarian NMR CenterUniversity of Bayreuth95447Universitätsstraße 30BayreuthGermany
| | - Markus Retsch
- Department of ChemistryPhysical Chemistry IBavarian Polymer InstituteBayreuth Center for Colloids and Interfaces and Bavarian Center for Battery Technology (BayBatt)University of BayreuthUniversitätsstraße 3095447BayreuthGermany
| |
Collapse
|
9
|
Ladang A, Rauch F, Delvin E, Cavalier E. Bone Turnover Markers in Children: From Laboratory Challenges to Clinical Interpretation. Calcif Tissue Int 2023; 112:218-232. [PMID: 35243530 DOI: 10.1007/s00223-022-00964-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 02/17/2022] [Indexed: 01/25/2023]
Abstract
Bone turnover markers (BTMs) have been developed many years ago to study, in combination with imaging techniques, bone remodeling in adults. In children and adolescents, bone metabolism differs from adults since it implies both growth and bone remodeling, suggesting an age- and gender-dependent BTM concentration. Therefore, specific studies have evaluated BTMs in not only physiological but also pathological conditions. However, in pediatrics, the use of BTMs in clinical practice is still limited due to these many children-related specificities. This review will discuss about physiological levels of BTMs as well as their modifications under pathological conditions in children and adolescents. A focus is also given on analytical and clinical challenges that restrain BTM usefulness in pediatrics.
Collapse
Affiliation(s)
- Aurélie Ladang
- Clinical Chemistry Department, CHU de Liège, Liège, Belgium.
| | - Frank Rauch
- Shriners Hospital for Children, McGill University, Montreal, Canada
| | - Edgard Delvin
- Centre & Department of Biochemistry, Ste-Justine University Hospital Research, Université de Montréal, Montreal, Canada
| | | |
Collapse
|
10
|
dos Reis GS, Pinto D, Lima ÉC, Knani S, Grimm A, Silva LF, Cadaval TR, Dotto GL. Lanthanum uptake from water using chitosan with different configurations. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
|
11
|
Auad R, Kakaje A, Alourfi Z. Prediabetes in Syria and Its Associated Factors: A Single-Center Cross-Sectional Study. Diabetes Ther 2022; 13:1573-1583. [PMID: 35821495 PMCID: PMC9399325 DOI: 10.1007/s13300-022-01293-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/20/2022] [Indexed: 11/27/2022] Open
Abstract
INTRODUCTION Prediabetes is a major risk factor for diabetes and many chronic complications, particularly cardiovascular disease (CVD). Risk factors vary among races and demographics. This is the first study to assess prediabetes in Syria and its relevant risk factors. METHODS This cross-sectional study was conducted in a primary health clinic in Al-Mouwasat University Hospital, the major Hospital in Damascus, Syria. Interviews, examinations, and blood investigations were carried out by qualified physicians in the clinic. RESULTS This study included 406 participants, of which 363 (89.4%) were females, 43(10.6%) were males, 91 (22.4%) had prediabetes, 108 (26.6%) were overweight, and 231 (56.9%) were obese. Older age, positive family history of diabetes, obesity, abdominal obesity in females, high cholesterol, being married, and CVD were statistically significantly associated with prediabetes (p < 0.05). However, prediabetes was not associated with gender, living in the city or country, cigarette smoking, hypertension, diet, triglycerides, or polycystic ovary syndrome (p > 0.05). However, in the multivariable analysis, only high cholesterol, familial diabetes, and waist diameter had significant association. CONCLUSIONS Prevalence of prediabetes in our study in Syria was higher than what was estimated by previous studies. While many risk factors were similar to other countries in the regions, other risk factors differed. These results were highly reflective of high burden of prediabetes and diabetes, mainly in relatively young females. Further studies are required to tackle this rising issue as it imposes major complications in the long term, and the high financial burden on the health care system.
Collapse
Affiliation(s)
- Rama Auad
- Division of Endocrinology, Department of Internal Medicine, Faculty of Medicine, Damascus University, Damascus, Syria.
- Damascus University, Faculty of Medicine, Damascus, Syria.
| | - Ameer Kakaje
- Damascus University, Faculty of Medicine, Damascus, Syria
| | - Zaynab Alourfi
- Division of Endocrinology, Department of Internal Medicine, Faculty of Medicine, Damascus University, Damascus, Syria
- Damascus University, Faculty of Medicine, Damascus, Syria
- Department of Internal Medicine, Faculty of Medicine, Damascus University, Damascus, Syria
| |
Collapse
|
12
|
Chen ZH, Lee KH, Tseng WH, Su CC, Hsieh KL, Lim CY, Huang SK. Comparison of mini endoscopic combined intrarenal surgery and multitract minimally invasive percutaneous nephrolithotomy specifically for kidney staghorn stones: a single-centre experience. BMC Urol 2022; 22:93. [PMID: 35773639 PMCID: PMC9248084 DOI: 10.1186/s12894-022-01030-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 05/17/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Staghorn stones require surgical treatment to prevent serious complications. Multitract percutaneous nephrolithotomy (PNL) causes great renal parenchymal injury and blood loss. One-stage endoscopic combined intrarenal surgery (ECIRS) entails the combined use of antegrade nephroscope and retrograde flexible ureteroscope to clear the staghorn stone, which may overcome the limitations of multitract PNL. We aimed to compare the perioperative outcomes of mini ECIRS and multitract minimally invasive PNL in staghorn stone management. METHODS This was a retrospective single-center study of patients with staghorn stones who underwent ECIRS (n = 17) or multitract minimally invasive PNL (n = 17) between January 2018 and September 2021. RESULTS There was a significant between-group difference with respect to Guy's stone score. Stone size, stone burden (ECIRS group, 21.41 cm3; multitract minimally invasive PNL group, 20.88 cm3 [P = 0.94]), and degree of hydronephrosis were comparable in the two groups. There was no significant between-group difference with respect to one-step or final stone-free rates. The mean operative time was also not significantly different between the groups (ECIRS group, 140 min; multitract minimally invasive PNL group, 183 min [P = 0.63]). ECIRS was associated with significantly lesser postoperative pain (visual analog scale; ECIRS group: 0; multitract minimally invasive PNL group: 2.7 [P < 0.001]). Hemoglobin loss, postoperative blood transfusion rate, complications, and length of hospital stay were comparable in the two groups. CONCLUSION Both mini ECIRS and multitract minimally invasive PNL were effective and safe for the management of renal staghorn stones with comparable operation time and stone-free rate, and complications. ECIRS was associated with less severe postoperative pain.
Collapse
Affiliation(s)
- Zhi-Hao Chen
- Division of Urology, Department of Surgery, Chi Mei Medical Center, No. 901, Zhonghua Rd. Yongkang Dist., Tainan City, 71004 Taiwan, R.O.C
| | - Kau-Han Lee
- Division of Urology, Department of Surgery, Chi Mei Medical Center, No. 901, Zhonghua Rd. Yongkang Dist., Tainan City, 71004 Taiwan, R.O.C
| | - Wen-Hsin Tseng
- Division of Urology, Department of Surgery, Chi Mei Medical Center, No. 901, Zhonghua Rd. Yongkang Dist., Tainan City, 71004 Taiwan, R.O.C
| | - Chia-Cheng Su
- Division of Urology, Department of Surgery, Chi Mei Medical Center, No. 901, Zhonghua Rd. Yongkang Dist., Tainan City, 71004 Taiwan, R.O.C
| | - Kun-Lin Hsieh
- Division of Urology, Department of Surgery, Chi Mei Medical Center, No. 901, Zhonghua Rd. Yongkang Dist., Tainan City, 71004 Taiwan, R.O.C
| | - Chye-Yang Lim
- Division of Urology, Department of Surgery, Chi Mei Medical Center, No. 901, Zhonghua Rd. Yongkang Dist., Tainan City, 71004 Taiwan, R.O.C
| | - Steven K. Huang
- Division of Urology, Department of Surgery, Chi Mei Medical Center, No. 901, Zhonghua Rd. Yongkang Dist., Tainan City, 71004 Taiwan, R.O.C
| |
Collapse
|
13
|
Monitoring of benthic eukaryotic communities in two tropical coastal lagoons through eDNA metabarcoding: a spatial and temporal approximation. Sci Rep 2022; 12:10089. [PMID: 35710829 PMCID: PMC9203746 DOI: 10.1038/s41598-022-13653-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 05/09/2022] [Indexed: 11/14/2022] Open
Abstract
Tropical coastal lagoons are important ecosystems that support high levels of biodiversity and provide several goods and services. Monitoring of benthic biodiversity and detection of harmful or invasive species is crucial, particularly in relation to seasonal and spatial variation of environmental conditions. In this study, eDNA metabarcoding was used in two tropical coastal lagoons, Chacahua (CH) and Corralero (C) (Southern Mexican Pacific), to describe the benthic biodiversity and its spatial–temporal dynamics. The distribution of benthic diversity within the lagoons showed a very particular pattern evidencing a transition from freshwater to seawater. Although the two lagoon systems are similar in terms of the species composition of metazoans and microeukaryotes, our findings indicate that they are different in taxa richness and structure, resulting in regional partitioning of the diversity with salinity as the driving factor of community composition in CH. Harmful, invasive, non-indigenous species, bioindicators and species of commercial importance were detected, demonstrating the reach of this technique for biodiversity monitoring along with the continued efforts of building species reference libraries.
Collapse
|
14
|
Porous Carbon Boosted Non-Enzymatic Glutamate Detection with Ultra-High Sensitivity in Broad Range Using Cu Ions. NANOMATERIALS 2022; 12:nano12121987. [PMID: 35745326 PMCID: PMC9230436 DOI: 10.3390/nano12121987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/04/2022] [Accepted: 06/06/2022] [Indexed: 12/07/2022]
Abstract
A non-enzymatic electrochemical sensor, based on the electrode of a chitosan-derived carbon foam, has been successfully developed for the detection of glutamate. Attributed to the chelation of Cu ions and glutamate molecules, the glutamate could be detected in an amperometric way by means of the redox reactions of chelation compounds, which outperform the traditional enzymatic sensors. Moreover, due to the large electroactive surface area and effective electron transportation of the porous carbon foam, a remarkable electrochemical sensitivity up to 1.9 × 104 μA/mM∙cm2 and a broad-spectrum detection range from nM to mM scale have been achieved, which is two-orders of magnitude higher and one magnitude broader than the best reported values thus far. Furthermore, our reported glutamate detection system also demonstrates a desirable anti-interference ability as well as a durable stability. The experimental revelations show that the Cu ions chelation-assisted electrochemical sensor with carbon foam electrode has significant potential for an easy fabricating, enzyme-free, broad-spectrum, sensitive, anti-interfering, and stable glutamate-sensing platform.
Collapse
|
15
|
Integrating of metal-organic framework UiO-66-NH2 and cellulose nanofibers mat for high-performance adsorption of dye rose bengal. Front Chem Sci Eng 2022. [DOI: 10.1007/s11705-022-2154-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
16
|
Sridhar A, Ponnuchamy M, Kapoor A, Prabhakar S. Valorization of food waste as adsorbents for toxic dye removal from contaminated waters: A review. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127432. [PMID: 34688000 DOI: 10.1016/j.jhazmat.2021.127432] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/09/2021] [Accepted: 10/02/2021] [Indexed: 05/07/2023]
Abstract
Industrial contaminants such as dyes and intermediates are released into water bodies, making the water unfit for human use. At the same time large amounts of food wastes accumulate near the work places, residential complexes etc. polluting the air due to putrefaction. The need of the hour lies in finding innovative solutions for dye removal from wastewater streams. In this context, the article emphasizes adoption or conversion of food waste materials, an ecological nuisance, as adsorbents for the removal of dyes from wastewaters. Adsorption, being a well-established technique, the review critically examines the specific potential of food waste constituents as dye adsorbents. The efficacy of food waste-based adsorbents is examined, besides addressing the possible adsorption mechanisms and the factors affecting phenomenon such as pH, temperature, contact time, adsorbent dosage, particle size, and ionic strength. Integration of information and communication technology approaches with adsorption isotherms and kinetic models are emphasized to bring out their role in improving overall modeling performance. Additionally, the reusability of adsorbents has been highlighted for effective substrate utilization. The review makes an attempt to stress the valorization of food waste materials to remove dyes from contaminated waters thereby ensuring long-term sustainability.
Collapse
Affiliation(s)
- Adithya Sridhar
- School of Food Science and Nutrition, Faculty of Environment, The University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Muthamilselvi Ponnuchamy
- Department of Chemical Engineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603 203, India
| | - Ashish Kapoor
- Department of Chemical Engineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603 203, India.
| | - Sivaraman Prabhakar
- Department of Chemical Engineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603 203, India
| |
Collapse
|
17
|
Sustainable lotus leaf wax nanocuticles integrated polydimethylsiloxane sorbent for instant removal of oily waste from water. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
18
|
Gao J, Liu JY, Lu PJ, Xiao JY, Gao MD, Li CP, Cui Z, Liu Y. Effects of Evolocumab Added to Moderate-Intensity Statin Therapy in Chinese Patients With Acute Coronary Syndrome: The EMSIACS Trial Study Protocol. Front Physiol 2021; 12:750872. [PMID: 34887772 PMCID: PMC8650150 DOI: 10.3389/fphys.2021.750872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 10/21/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Several studies have demonstrated that using a higher dose of statin can easily induce liver injury and myopathy. Low-density lipoprotein cholesterol (LDL-C) is a well-established modifiable risk factor for cardiovascular disease; however, the large majority of Chinese patients cannot meet the target level of LDL-C recommended by the Chinese expert consensus. Evolocumab has been demonstrated to reduce LDL-C by approximately 60% in many studies. Nevertheless, whether combined evolocumab and moderate-intensity statin is as effective in lowering LDL-C and decreasing incidence of MACE in Chinese patients presenting with the acute phase of acute coronary syndrome (ACS) remains unknown. Therefore, the "Evolocumab added to Moderate-Intensity Statin therapy on LDL-C lowering and cardiovascular adverse events in patients with Acute Coronary Syndrome" (EMSIACS) is conducted. Methods: The EMSIACS is a prospective, randomized, open-label, parallel-group, multicenter study involving analyzing the feasibility and efficacy of evolocumab added to moderate-intensity statin therapy on lowering LDL-C levels in adult Chinese patients hospitalized for acute phase ACS. The sample size calculation is based on the primary outcome, and 500 patients will be planned to recruit. Patients are randomized in evolocumab arm (evolocumab 140mg every 2weeks plus rosuvastatin 10mg/day or atorvastatin 20mg/day) and statin-only arm (rosuvastatin 10mg/day or atorvastatin 20mg/day). The primary outcome is the percentage change in LDL-C in weeks 4 and week 12 after treatment. The secondary outcome is the occurrence of MACE after 12weeks and 1year of treatment. Discussion: If the EMSIACS trial endpoints prove statistically significant, the evolocumab added to moderate-intensity statin therapy will have the potential to effectively lower subjects' LDL-C levels, especially for the Chinese patients with acute phase ACS. However, if the risk of MACE is not significantly different between the two groups, we may extend follow-up time for secondary outcome when the clinical trial is over. Clinical trial registration: The study is registered to ClinicalTrials.gov (NCT04100434), which retrospectively registered on November 24, 2020.
Collapse
Affiliation(s)
- Jing Gao
- Thoracic Clinical College, Tianjin Medical University, Tianjin, China.,Cardiovascular Institute, Tianjin Chest Hospital, Tianjin, China
| | - Jing-Yu Liu
- Department of Cardiology, Tianjin Chest Hospital, Tianjin, China
| | - Peng-Ju Lu
- Department of Cardiology, Tianjin Chest Hospital, Tianjin, China
| | - Jian-Yong Xiao
- Department of Cardiology, Tianjin Chest Hospital, Tianjin, China
| | - Ming-Dong Gao
- Department of Cardiology, Tianjin Chest Hospital, Tianjin, China
| | - Chang-Ping Li
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Zhuang Cui
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Yin Liu
- Thoracic Clinical College, Tianjin Medical University, Tianjin, China.,Department of Cardiology, Tianjin Chest Hospital, Tianjin, China
| |
Collapse
|
19
|
Rajeswari Krishnankutty A, Najeema Sulaiman S, Sadasivan A, Joseph R, Komath M. Porous membranes of quaternized chitosan composited with strontium-based nanobioceramic for periodontal tissue regeneration. J Biomater Appl 2021; 36:1254-1268. [PMID: 34802323 DOI: 10.1177/08853282211050271] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This report demonstrates the development of a degradable quaternary ammonium derivative of chitosan (QC) composited with strontium-containing nanoapatite (SA) for bioactivity. The material was made as porous membrane by solution casting and freeze drying, for guided tissue regeneration (GTR) applications. The micromorphology, tensile strength, suture pull-out strength, degradation (in vitro, in phosphate buffered saline), and cytocompatibility (using human periodontal ligament cells) were tested to investigate the effect of derivatization and SA addition. The porosity of the membranes increased with increasing SA content and so did the tensile strength and the degradation. The suture pull-out strength, however, showed a decrease. The cell culture evaluation endorsed biocompatibility. The composite with 1.5 mg SA per 1 mL QC was found to have optimal qualities for GTR applications.
Collapse
Affiliation(s)
| | | | - Arun Sadasivan
- 75380Sree Mookambika Institute of Dental Sciences, Kanyakumari, India
| | - Roy Joseph
- 29354Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Manoj Komath
- 29354Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| |
Collapse
|
20
|
Yang J, Chen Y, Gao K, Li Y, Wang S, Xie F, Jia X, Song H. Biomimetic superelastic sodium alginate-based sponges with porous sandwich-like architectures. Carbohydr Polym 2021; 272:118527. [PMID: 34420761 DOI: 10.1016/j.carbpol.2021.118527] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/27/2021] [Accepted: 08/01/2021] [Indexed: 01/29/2023]
Abstract
Design and fabrication of structurally optimized three-dimensional porous materials are highly desirable for engineering applications. Herein, through a facile bidirectional freezing technique, we prepared superelastic biomass sponges in air and underwater, which possess biomimetic porous sandwich-like architectures with lamellar layers interconnected by porous microstructures, similar to the structure of rice stems. This distinctive architecture was obtained by incorporating Typha orientalis fibers (TOFs) and graphene oxide (GO) nanosheets into sodium alginate (SA) matrix, in which SA flakes and GO nanosheets were intimately grown along TOFs. The porous sandwich-like microstructure allows stress to be distributed throughout the lamellar to avoid stress concentration and endows SA/TOFs/GO sponge with excellent mechanical compressibility and recoverability. Especially, underwater superelasticity and superoleophobicity of the sponge facilitates removal of water-miscible contaminants or oil/water separation with high efficiency. This novel strategy for the design biomimetic architecture of superelastic biomass sponge can promote its application for protecting environment.
Collapse
Affiliation(s)
- Jin Yang
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China
| | - Yu Chen
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China
| | - Kuidong Gao
- Shandong Province Key Laboratory of Mine Mechanical Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yong Li
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China
| | - Sizhe Wang
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China
| | - Fangwei Xie
- School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Xiaohua Jia
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China.
| | - Haojie Song
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China.
| |
Collapse
|
21
|
Toh-E A, Ohkusu M, Ishiwada N, Watanabe A, Kamei K. Genetic system underlying responses of Cryptococcus neoformans to cadmium. Curr Genet 2021; 68:125-141. [PMID: 34761291 DOI: 10.1007/s00294-021-01222-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 12/01/2022]
Abstract
Cryptococcus neoformans, basidiomycetous pathogenic yeast, is basically an environmental fungus and, therefore, challenged by ever changing environments. In this study, we focused on how C. neoformans responds to stress caused by cadmium that is one of high-risk pollutants. By tracking phenotypes of the resistance or sensitivity to cadmium, we undertook forward and reverse genetic studies to identify genes involved in cadmium metabolism in C. neoformans. We found that the main route of Cd2+ influx is through Mn2+ ion transporter, Smf1, which is an ortholog of Nramp (natural resistance-associated macrophage protein 1) of mouse. We found that serotype A strains are generally more resistant to cadmium than serotype D strains and that cadmium resistance of H99, a representative of serotype A strains, was found to be due to a partial defect in SMF1. We found that calcium channel has a subsidiary role for cadmium uptake. We also showed that Pca1 (P-type-ATPase) functions as an extrusion pump for cadmium. We examined the effects of some metals on cadmium toxicity and suggested (i) that Ca2+ and Zn2+ could exert their protective function against Cd2+ via restoring cadmium-inhibited cellular processes and (ii) that Mg2+ and Mn2+ could have antagonistic roles in an unknown Smf1-independent Cd2+ uptake system. We proposed a model for Cd2+-response of C. neoformans, which will serve as a platform for understanding how this organism copes with the toxic metal.
Collapse
Affiliation(s)
- Akio Toh-E
- Medical Mycology Research Center, Chiba University, 1-8-1 Inohana, Chiba, 260-8673, Japan.
| | - Misako Ohkusu
- Medical Mycology Research Center, Chiba University, 1-8-1 Inohana, Chiba, 260-8673, Japan
| | - Naruhiko Ishiwada
- Medical Mycology Research Center, Chiba University, 1-8-1 Inohana, Chiba, 260-8673, Japan
| | - Akira Watanabe
- Medical Mycology Research Center, Chiba University, 1-8-1 Inohana, Chiba, 260-8673, Japan
| | - Katsuhiko Kamei
- Medical Mycology Research Center, Chiba University, 1-8-1 Inohana, Chiba, 260-8673, Japan
| |
Collapse
|
22
|
Özaslan A, Kayhan G, İşeri E, Ergün MA, Güney E, Perçin FE. Identification of copy number variants in children and adolescents with autism spectrum disorder: a study from Turkey. Mol Biol Rep 2021; 48:7371-7378. [PMID: 34637094 DOI: 10.1007/s11033-021-06745-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 10/01/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Copy number variants (CNVs) play a key role in the etiology of autism spectrum disorder (ASD). Therefore, recent guidelines recommend chromosomal microarrays (CMAs) as first-tier genetic tests. This study's first aim was to determine the clinical usefulness of CMAs in children diagnosed with ASD in a Turkish population. The second aim was to describe the CNVs and clinical phenotypes of children with ASD. METHODS AND RESULTS This was a single-center retrospective cross-sectional study. Data were obtained from the medical records of children with ASD followed at Gazi University Hospital, (Ankara, Turkey). The sample consisted of 47 ASD cases (mean age: 60.34 ± 25.60 months; 82.9% boys). The diagnostic yield of the CMAs was 8.5%. Four pathogenic CNVs were identified: 9p24.3p24.2 deletion, 15q11-q13 duplication, 16p11.2 deletion, and 22q13.3 deletion. Also, four variants were found at 2q36.3, 10p11.21, 15q11.2, and Xp11.22, which were classified as variants of uncertain significance (VUS). CONCLUSIONS The TRAP12 and PARD3 genes in CNVs classified as VUS may be worth investigating for autism. The initial identification of both clinical and biological markers can facilitate monitoring, early intervention, or prevention and advance our understanding of the neurobiology underlying ASD.
Collapse
Affiliation(s)
- Ahmet Özaslan
- Child and Adolescent Psychiatry Department, Gazi University Medical Faculty, Emniyet Mahallesi, Bandırma Caddesi No. 6/1, Yenimahalle, Ankara, Turkey.
| | - Gülsüm Kayhan
- Medical Genetics Department, Gazi University Medical Faculty, Ankara, Turkey
| | - Elvan İşeri
- Child and Adolescent Psychiatry Department, Gazi University Medical Faculty, Emniyet Mahallesi, Bandırma Caddesi No. 6/1, Yenimahalle, Ankara, Turkey
| | - Mehmet Ali Ergün
- Medical Genetics Department, Gazi University Medical Faculty, Ankara, Turkey
| | - Esra Güney
- Child and Adolescent Psychiatry Department, Gazi University Medical Faculty, Emniyet Mahallesi, Bandırma Caddesi No. 6/1, Yenimahalle, Ankara, Turkey
| | - Ferda Emriye Perçin
- Medical Genetics Department, Gazi University Medical Faculty, Ankara, Turkey
| |
Collapse
|
23
|
Eshkol-Yogev I, Kaufman A, Haddad M, Zilberman M. Cell viability of novel composite hydrogels loaded with hydroxyapatite for oral and maxillofacial bone regeneration. Odontology 2021; 110:296-304. [PMID: 34623513 DOI: 10.1007/s10266-021-00662-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 09/29/2021] [Indexed: 11/26/2022]
Abstract
The development of hydrogels for maxillofacial bone regeneration holds vast potential. However, some challenges need to be addressed to further their application in clinical settings. One challenge is optimizing cell viability. To improve mechanical strength, various materials have been investigated; however, incorporation of these materials within the hydrogel network may affect cell viability. The purpose of this study was to evaluate the cell viability of novel gelatin-alginate composite hydrogels loaded with hydroxyapatite (HA) and nano-hydroxyapatite (n-HA) for maxillofacial bone regeneration. Nine different hydrogels were prepared: three loaded with 0.5%, 1%, and 3% w/v HA; three loaded with 0.25%, 0.5%, and 1% w/v n-HA; one not loaded as a control and two HA and n-HA hydrogels with a lower concentration of the EDC crosslinker. Cell viability of human osteoblasts exposed to the hydrogels as affected by the HA type, size, and concentration, as well as to the crosslinker concentration, was investigated. An Alamar Blue assay was used to evaluate cell viability in the presence of hydrogel extracts and in aqueous solutions (without the hydrogel). A qualitative model was developed for explaining cell viability and growth. Higher percentages of cell viability were observed in the hydrogels loaded with hydroxyapatite as compared with the control. The effect of HA-related parameters, i.e., particle size and concentration, was found to increase the cytotoxic effect, as expressed in lower cell viability. The most favorable composites were the n-HA hydrogels. The incorporation of n-HA in the hydrogel to form a composite seems to be a very promising approach for maxillofacial bone regeneration applications.
Collapse
Affiliation(s)
- Inbar Eshkol-Yogev
- Department of Biomedical Engineering, Faculty of Engineering, Tel-Aviv University, Tel-Aviv, Israel.
| | - Anat Kaufman
- Department of Biomedical Engineering, Faculty of Engineering, Tel-Aviv University, Tel-Aviv, Israel
| | - Marwan Haddad
- Head of Orthopedic Department, Holy Family Hospital, Nazareth, Israel
| | - Meital Zilberman
- Department of Biomedical Engineering, Faculty of Engineering, Tel-Aviv University, Tel-Aviv, Israel
- Department of Materials Science and Engineering, Tel-Aviv University, Tel-Aviv, Israel
| |
Collapse
|
24
|
Mokhtari A, Sabzi M, Azimi H. 3D porous bioadsorbents based on chitosan/alginate/cellulose nanofibers as efficient and recyclable adsorbents of anionic dye. Carbohydr Polym 2021; 265:118075. [DOI: 10.1016/j.carbpol.2021.118075] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 12/15/2022]
|
25
|
Huang R, Zhang Q, Yao H, Lu X, Zhou Q, Yan D. Ion-Exchange Resins for Efficient Removal of Colorants in Bis(hydroxyethyl) Terephthalate. ACS OMEGA 2021; 6:12351-12360. [PMID: 34056387 PMCID: PMC8154176 DOI: 10.1021/acsomega.1c01477] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 04/23/2021] [Indexed: 05/05/2023]
Abstract
Bis(hydroxyethyl) terephthalate (BHET) obtained from waste poly(ethylene terephthalate) (PET) glycolysis often have undesirable colors, leading to an increased cost in the decoloration of the product and limiting the industrialization of chemical recycling. In this work, eight types of ion-exchange resins were used for BHET decoloration, and resin D201 showed an outstanding performance not only in the decoloration efficiency but also in the retention rate of the product. Under the optimal conditions, the removal rate of the colorant and the retention efficiency of BHET were over 99% and 95%, respectively. D201 showed outstanding reusability with five successive cycles, and the decolored BHET and its r-PET showed good chromaticity. Furthermore, the investigations of adsorption isotherms, kinetics, and thermodynamics have been conducted, which indicated that the decoloration process was a natural endothermic reaction. Adsorption interactions between the colorant and resin were extensively examined by various characterizations, revealing that electrostatic force, π-π interactions, and hydrogen bonding were the dominant adsorption mechanisms.
Collapse
Affiliation(s)
- Rong Huang
- Beijing
Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory
of Green Process and Engineering, State Key Laboratory of Multiphase
Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School
of Chemical and Engineering, University
of Chinese Academy of Sciences, Beijing 100049, P. R.
China
| | - Qi Zhang
- Beijing
Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory
of Green Process and Engineering, State Key Laboratory of Multiphase
Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School
of Chemical and Engineering, University
of Chinese Academy of Sciences, Beijing 100049, P. R.
China
| | - Haoyu Yao
- Beijing
Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory
of Green Process and Engineering, State Key Laboratory of Multiphase
Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School
of Chemical and Engineering, University
of Chinese Academy of Sciences, Beijing 100049, P. R.
China
| | - Xingmei Lu
- Beijing
Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory
of Green Process and Engineering, State Key Laboratory of Multiphase
Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School
of Chemical and Engineering, University
of Chinese Academy of Sciences, Beijing 100049, P. R.
China
- Sino
Danish College, University of Chinese Academy
of Sciences, Beijing 100049, P. R. China
- Innovation
Academy for Green Manufacture, Chinese Academy
of Sciences, Beijing 100190, P. R. China
- E-mail: . Phone/Fax: +86-010-82544800
| | - Qing Zhou
- Beijing
Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory
of Green Process and Engineering, State Key Laboratory of Multiphase
Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School
of Chemical and Engineering, University
of Chinese Academy of Sciences, Beijing 100049, P. R.
China
- Innovation
Academy for Green Manufacture, Chinese Academy
of Sciences, Beijing 100190, P. R. China
- E-mail: . Phone/Fax: +86-010-82544800
| | - Dongxia Yan
- Beijing
Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory
of Green Process and Engineering, State Key Laboratory of Multiphase
Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| |
Collapse
|
26
|
Saheed IO, Oh WD, Suah FBM. Enhanced adsorption of acid Blue-25 dye onto chitosan/porous carbon composite modified in 1-allyl-3-methyl imidazolium bromide ionic liquid. Int J Biol Macromol 2021; 183:1026-1033. [PMID: 33971228 DOI: 10.1016/j.ijbiomac.2021.05.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 05/03/2021] [Accepted: 05/05/2021] [Indexed: 01/13/2023]
Abstract
In this study, chitosan/porous carbon composite (C-PC) modified in 1-Allyl-3-methyl imidazolium bromide [AMIM][Br] under airtight condition was prepared for the removal of Acid Blue-25 dye (AB-25) from aqueous medium. For comparison of adsorption efficiency of C-PC, chitosan-activated carbon composite (C-AC) was also prepared in 1% acetic acid. The adsorbents were characterised using SEM, EDX, XRD, BET, TGA and FTIR. The micrograph of C-PC revealed cavities and slightly rough surfaces dominated with similar sized and irregular shaped stone-like materials which differ from the precursors' micrograph. BET analysis revealed the domination of mesopores on the C-PC and C-AC surfaces, as the hydroxyl and amino group on C-PC are the main active sites for AB-25 dye uptake. The dye was better adsorbed onto C-PC at pH 2 and C-AC at pH 4. The adsorption capacity obtained for C-PC, C-AC, activated carbon (AC) and chitosan (CH) using Langmuir isotherm model are 3333.33 mg/g, 909.90 mg/g, 909.09 mg/g and 833.33 mg/g, respectively. The experimental data are well described by Langmuir and Fruendlich isotherms for adsorption of the dye onto C-PC, AC and CH. C-AC fitted into Langmuir isotherm only. The kinetics of the adsorption fitted into pseudo-second order indicating the possibility of chemical interactions in the adsorption process.
Collapse
Affiliation(s)
- Ismaila Olalekan Saheed
- Green Analytical Chemistry Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia; Department of Chemical, Geological and Physical Sciences, Kwara State University, Malete, P.M.B 1530, Ilorin, Nigeria
| | - Wen-Da Oh
- Green Analytical Chemistry Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia
| | - Faiz Bukhari Mohd Suah
- Green Analytical Chemistry Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia.
| |
Collapse
|
27
|
Takeshita S, Zhao S, Malfait WJ, Koebel MM. Chemie der Chitosan‐Aerogele: Lenkung der dreidimensionalen Poren für maßgeschneiderte Anwendungen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202003053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Satoru Takeshita
- Building Energy Materials & Components Laboratory Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa) Überlandstrasse 129 CH-8600 Dübendorf Schweiz
- Research Institute for Chemical Process Technology National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1-1-1 Higashi 3058565 Tsukuba Japan
| | - Shanyu Zhao
- Building Energy Materials & Components Laboratory Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa) Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Wim J. Malfait
- Building Energy Materials & Components Laboratory Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa) Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Matthias M. Koebel
- Building Energy Materials & Components Laboratory Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa) Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| |
Collapse
|
28
|
Muneeb M, Henschel A. Eye-color and Type-2 diabetes phenotype prediction from genotype data using deep learning methods. BMC Bioinformatics 2021; 22:198. [PMID: 33874881 PMCID: PMC8056510 DOI: 10.1186/s12859-021-04077-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/03/2021] [Indexed: 01/08/2023] Open
Abstract
Background Genotype–phenotype predictions are of great importance in genetics. These predictions can help to find genetic mutations causing variations in human beings. There are many approaches for finding the association which can be broadly categorized into two classes, statistical techniques, and machine learning. Statistical techniques are good for finding the actual SNPs causing variation where Machine Learning techniques are good where we just want to classify the people into different categories. In this article, we examined the Eye-color and Type-2 diabetes phenotype. The proposed technique is a hybrid approach consisting of some parts from statistical techniques and remaining from Machine learning. Results The main dataset for Eye-color phenotype consists of 806 people. 404 people have Blue-Green eyes where 402 people have Brown eyes. After preprocessing we generated 8 different datasets, containing different numbers of SNPs, using the mutation difference and thresholding at individual SNP. We calculated three types of mutation at each SNP no mutation, partial mutation, and full mutation. After that data is transformed for machine learning algorithms. We used about 9 classifiers, RandomForest, Extreme Gradient boosting, ANN, LSTM, GRU, BILSTM, 1DCNN, ensembles of ANN, and ensembles of LSTM which gave the best accuracy of 0.91, 0.9286, 0.945, 0.94, 0.94, 0.92, 0.95, and 0.96% respectively. Stacked ensembles of LSTM outperformed other algorithms for 1560 SNPs with an overall accuracy of 0.96, AUC = 0.98 for brown eyes, and AUC = 0.97 for Blue-Green eyes. The main dataset for Type-2 diabetes consists of 107 people where 30 people are classified as cases and 74 people as controls. We used different linear threshold to find the optimal number of SNPs for classification. The final model gave an accuracy of 0.97%. Conclusion Genotype–phenotype predictions are very useful especially in forensic. These predictions can help to identify SNP variant association with traits and diseases. Given more datasets, machine learning model predictions can be increased. Moreover, the non-linearity in the Machine learning model and the combination of SNPs Mutations while training the model increases the prediction. We considered binary classification problems but the proposed approach can be extended to multi-class classification.
Collapse
Affiliation(s)
- Muhammad Muneeb
- Department of Electrical Engineering and Computer Science, Center for Biotechnology Khalifa University, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Andreas Henschel
- Department of Electrical Engineering and Computer Science, Center for Biotechnology Khalifa University, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.
| |
Collapse
|
29
|
Wu S, Xing Z, Yuan Y, Bai W, Bao L, Pei L, Zhang H. Porous and hydrophobic graphene-based core-shell sponges for efficient removal of water contaminants. NANOTECHNOLOGY 2021; 32:265706. [PMID: 33735849 DOI: 10.1088/1361-6528/abf001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
Water pollution is a global environmental problem that has attracted great concern, and functional carbon nanomaterials are widely used in water treatment. Here, to optimize the removal performance of both oil/organic matter and dye molecules, we fabricated porous and hydrophobic core-shell sponges by growing graphene on three-dimensional stacked copper nanowires. The interconnected pores between the one-dimensional nanocore-shells construct the porous channels within the sponge, and the multilayered graphene shells equip the sponge with a water contact angle over 120° even under acidic and alkaline environments, which enables fast and efficient cleanup of oil on or under the water. The core-shell sponge can absorb oil or organic solvents with densities 40-90 times its own, and its oil-sorption capacity is much larger than those of other porous materials like activated carbon and loofah. On the other hand, the adsorption behavior of the core-shell sponge to dyes including methyl orange (MO) and malachite green (MG), also common water pollutants, was also measured. Dynamic adsorption of MG under cyclic compression demonstrated a higher adsorption rate than that in the static state, and an acidic environment was favorable for the adsorption of MO molecules. Finally, the adsorption isotherm for MO molecules was analyzed and fitted with the Langmuir model, and the adsorption kinetics were studied in depth as well.
Collapse
Affiliation(s)
- Shiting Wu
- New Energy Materials Research Center, College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Zhihao Xing
- New Energy Materials Research Center, College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Yongjun Yuan
- New Energy Materials Research Center, College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Wangfeng Bai
- New Energy Materials Research Center, College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Liang Bao
- New Energy Materials Research Center, College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Lang Pei
- New Energy Materials Research Center, College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Huaiwei Zhang
- New Energy Materials Research Center, College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| |
Collapse
|
30
|
Nanocomposite sponges for enhancing intestinal residence time following oral administration. J Control Release 2021; 333:579-592. [PMID: 33838210 DOI: 10.1016/j.jconrel.2021.04.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 03/31/2021] [Accepted: 04/05/2021] [Indexed: 01/25/2023]
Abstract
In this work, nanocomposites that combine mucopenetrating and mucoadhesive properties in a single system are proposed as innovative strategy to increase drug residence time in the intestine following oral administration. To this aim, novel mucoadhesive chitosan (CH) sponges loaded with mucopenetrating nanoemulsions (NE) were developed via freeze-casting technique. The NE mucopenetration ability was determined studying the surface affinity and thermodynamic binding of the nanosystem with mucins. The ability of nanoparticles to penetrate across a preformed mucins layer was validated by 3D-time laps Confocal Laser Scanning Microscopy imaging. Microscopy observations (Scanning Electron Microscopy and Optical Microscopy) showed that NE participated in the structure of the sponge affecting its stability and in vitro release kinetics. When incubated with HCT 116 and Caco-2 cell lines, the NE proved to be cytocompatible over a wide concentration range. Finally, the in vivo biodistribution of the nanocomposite was evaluated after oral gavage in healthy mice. The intestinal retention of NE was highly enhanced when loaded in the sponge compared to the NE suspension. Overall, our results demonstrated that the developed nanocomposite sponge is a promising system for sustained drug intestinal delivery.
Collapse
|
31
|
Pineda PS, Flores EB, Herrera JRV, Low WY. Opportunities and Challenges for Improving the Productivity of Swamp Buffaloes in Southeastern Asia. Front Genet 2021; 12:629861. [PMID: 33828581 PMCID: PMC8021093 DOI: 10.3389/fgene.2021.629861] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 02/26/2021] [Indexed: 11/18/2022] Open
Abstract
The swamp buffalo is a domesticated animal commonly found in Southeast Asia. It is a highly valued agricultural animal for smallholders, but the production of this species has unfortunately declined in recent decades due to rising farm mechanization. While swamp buffalo still plays a role in farmland cultivation, this species' purposes has shifted from draft power to meat, milk, and hide production. The current status of swamp buffaloes in Southeast Asia is still understudied compared to its counterparts such as the riverine buffaloes and cattle. This review discusses the background of swamp buffalo, with an emphasis on recent work on this species in Southeast Asia, and associated genetics and genomics work such as cytogenetic studies, phylogeny, domestication and migration, genetic sequences and resources. Recent challenges to realize the potential of this species in the agriculture industry are also discussed. Limited genetic resource for swamp buffalo has called for more genomics work to be done on this species including decoding its genome. As the economy progresses and farm mechanization increases, research and development for swamp buffaloes are focused on enhancing its productivity through understanding the genetics of agriculturally important traits. The use of genomic markers is a powerful tool to efficiently utilize the potential of this animal for food security and animal conservation. Understanding its genetics and retaining and maximizing its adaptability to harsher environments are a strategic move for food security in poorer nations in Southeast Asia in the face of climate change.
Collapse
Affiliation(s)
- Paulene S. Pineda
- Philippine Carabao Center National Headquarters and Genepool, Science City of Muñoz, Philippines
| | - Ester B. Flores
- Philippine Carabao Center National Headquarters and Genepool, Science City of Muñoz, Philippines
| | | | - Wai Yee Low
- The Davies Research Centre, School of Animal and Veterinary Sciences, University of Adelaide, Adelaide, SA, Australia
| |
Collapse
|
32
|
|
33
|
Andretto V, Rosso A, Briançon S, Lollo G. Nanocomposite systems for precise oral delivery of drugs and biologics. Drug Deliv Transl Res 2021; 11:445-470. [PMID: 33534107 DOI: 10.1007/s13346-021-00905-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2021] [Indexed: 12/15/2022]
Abstract
Oral delivery is considered the favoured route of administration for both local and systemic delivery of active molecules. Formulation of drugs in conventional systems and nanoparticles has provided opportunities for targeting the gastrointestinal (GI) tract, increasing drug solubility and bioavailability. Despite the achievements of these delivery approaches, the development of a product with the ability of delivering drug molecules at a specific site and according to patients' needs remains a challenging endeavour. The complexity of the physicochemical properties of colloidal systems, their stability in different regions of the gastrointestinal tract, and interaction with the restrictive biological barriers hampered their success for oral precise medicine. To overcome these issues, nanoparticles have been combined with polymers to create hybrid nanosystems, namely nanocomposites. They offer enormous possibilities of structural and mechanical modifications to both nanoparticles and polymeric matrixes to generate systems with new properties, functions, and applications for oral delivery. In this review, nanocomposites' physicochemical and functional properties intended to target specific regions of the GI tract-oral cavity, stomach, small bowel, and colon-are analysed. In parallel, it is provided an insight in the nanocomposite solutions for oral delivery intended for systemic and local absorption, together with a focus on inflammatory bowel diseases (IBDs). Additional difficulties in managing IBD related to the alteration in the physiology of the intestine are described. Finally, future perspectives and opportunities for advancement in this field are discussed.
Collapse
Affiliation(s)
- Valentina Andretto
- LAGEPP UMR 5007, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, 43 Boulevard du 11 Novembre 1918, 69100, Villeurbanne, France
| | - Annalisa Rosso
- LAGEPP UMR 5007, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, 43 Boulevard du 11 Novembre 1918, 69100, Villeurbanne, France
| | - Stéphanie Briançon
- LAGEPP UMR 5007, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, 43 Boulevard du 11 Novembre 1918, 69100, Villeurbanne, France
| | - Giovanna Lollo
- LAGEPP UMR 5007, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, 43 Boulevard du 11 Novembre 1918, 69100, Villeurbanne, France.
| |
Collapse
|
34
|
The preparation of nano-MIL-101(Fe)@chitosan hybrid sponge and its rapid and efficient adsorption to anionic dyes. Int J Biol Macromol 2020; 165:2684-2692. [DOI: 10.1016/j.ijbiomac.2020.10.073] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 10/09/2020] [Accepted: 10/10/2020] [Indexed: 12/16/2022]
|
35
|
Takeshita S, Zhao S, Malfait WJ, Koebel MM. Chemistry of Chitosan Aerogels: Three‐Dimensional Pore Control for Tailored Applications. Angew Chem Int Ed Engl 2020; 60:9828-9851. [DOI: 10.1002/anie.202003053] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/06/2020] [Indexed: 01/06/2023]
Affiliation(s)
- Satoru Takeshita
- Building Energy Materials & Components Laboratory Swiss Federal Laboratories for Materials Science and Technology (Empa) Überlandstrasse 129 CH-8600 Dübendorf Switzerland
- Research Institute for Chemical Process Technology National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1-1-1 Higashi 3058565 Tsukuba Japan
| | - Shanyu Zhao
- Building Energy Materials & Components Laboratory Swiss Federal Laboratories for Materials Science and Technology (Empa) Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Wim J. Malfait
- Building Energy Materials & Components Laboratory Swiss Federal Laboratories for Materials Science and Technology (Empa) Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Matthias M. Koebel
- Building Energy Materials & Components Laboratory Swiss Federal Laboratories for Materials Science and Technology (Empa) Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| |
Collapse
|
36
|
Dhakshinamoorthy A, Jacob M, Vignesh NS, Varalakshmi P. Pristine and modified chitosan as solid catalysts for catalysis and biodiesel production: A minireview. Int J Biol Macromol 2020; 167:807-833. [PMID: 33144253 DOI: 10.1016/j.ijbiomac.2020.10.216] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/05/2020] [Accepted: 10/27/2020] [Indexed: 12/20/2022]
Abstract
Chitosan is one of the readily available polymers with relatively high abundance, biodegradable and sustainable materials with divergent functional groups that are employed in broad range of applications. Chitosan is widely used in many fields like adsorption, drug carrier for therapeutic activity, environmental remediation, drug formulation and among others. One of the unique features of chitosan is that it can be transformed to other forms like beads, films, flakes, sponges and fibres depending upon the applications. This review is aimed at showing the potential applications of chitosan and its modified solids in organic transformations. The number of existing articles is organized based on the nature of materials and subsequently with the types of reactions. After a brief description on the structural features of chitosan, properties, characterization methods including various analytical/microscopic techniques and some of the best practices to be followed in catalysis are also discussed. The next section of this review describes the catalytic activity of native chitosan without any modifications while the subsequent sections provide the catalytic activity of chitosan derivatives, chitosan covalently modified with metal complexes/salts through linkers and chitosan as support for metal nanoparticles (NPs). These sections discuss number of organic reactions that include Knoevenagel condensation, oxidation, reduction, heterocycles synthesis, cross-coupling reactions and pollutant degradation among others. A separate section provides the catalytic applications of chitosan and its modified forms for the production of fatty acid methyl esters (FAME) through esterification/transesterification reactions. The final section summarizes our views on the future directions of this field in the coming years.
Collapse
Affiliation(s)
| | - Manju Jacob
- Department of Advanced Zoology and Biotechnology, Loyola College, Chennai 600 034, Tamil Nadu, India
| | - Nagamalai Sakthi Vignesh
- Department of Molecular Microbiology, School of Biotechnology, Madurai Kamaraj University, Madurai, Tamil Nadu 625021, India
| | - Perumal Varalakshmi
- Department of Molecular Microbiology, School of Biotechnology, Madurai Kamaraj University, Madurai, Tamil Nadu 625021, India
| |
Collapse
|
37
|
Shi H, Dong C, Yang Y, Han Y, Wang F, Wang C, Men J. Preparation of sulfonate chitosan microspheres and study on its adsorption properties for methylene blue. Int J Biol Macromol 2020; 163:2334-2345. [DOI: 10.1016/j.ijbiomac.2020.09.078] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/08/2020] [Accepted: 09/10/2020] [Indexed: 12/31/2022]
|
38
|
de Lacerda Bukzem A, Dos Santos DM, Leite IS, Inada NM, Campana-Filho SP. Tuning the properties of carboxymethylchitosan-based porous membranes for potential application as wound dressing. Int J Biol Macromol 2020; 166:459-470. [PMID: 33127547 DOI: 10.1016/j.ijbiomac.2020.10.204] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 10/07/2020] [Accepted: 10/24/2020] [Indexed: 12/31/2022]
Abstract
Wound repair is a complex process that calls for strategies to allow a rapid and effective regeneration of injured skin, which has stimulated the research of advanced wound dressings. Herein, highly porous membranes of N,O-carboxymethylchitosan (CMCh), and poly (vinyl alcohol) (PVA) were successfully prepared via a green and facile freeze-drying method of blend solutions containing CMCh/PVA at weight ratio 25/75. Membranes composed only by CMCh were also prepared and genipin was used for crosslinking. Different contents of TiO2 nanoparticles were incorporated to both type of membranes, which were characterized in terms of morphology, porosity (Φ), swelling capacity (S.C.), mechanical properties, susceptibility to lysozyme degradation and in vitro cytotoxicity toward human fibroblast (HDFn) and keratinocytes (HaCaT) cells. Larger apparent pores were observed in the surface of the genipin-crosslinked CMCh membrane, which resulted in higher porosity (Φ ≈ 76%) and swelling capacity (S.C. ≈ 1720%) as compared to CMCh/PVA membrane (Φ ≈ 68%; S.C. ≈ 1660%). The porosity of both types of membranes decreased upon the addition of TiO2 nanoparticles while swelling capacity increased. Due to their high porosity and swelling capacity, adequate mechanical properties, controlled degradability, and cytocompatibility, such carboxymethylchitosan-based membranes are potentially useful as wound dressings.
Collapse
Affiliation(s)
- Andrea de Lacerda Bukzem
- Sao Carlos Institute of Chemistry/University of Sao Paulo, Av. Trabalhador sao-carlense, 400, 13566-590 Sao Carlos, São Paulo, Brazil
| | - Danilo Martins Dos Santos
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, 13560-970 São Carlos, SP, Brazil
| | - Ilaiáli Souza Leite
- Sao Carlos Institute of Physics, University of São Paulo, PO Box 369, 13560-970 São Carlos, São Paulo, Brazil
| | - Natalia Mayumi Inada
- Sao Carlos Institute of Physics, University of São Paulo, PO Box 369, 13560-970 São Carlos, São Paulo, Brazil
| | - Sérgio Paulo Campana-Filho
- Sao Carlos Institute of Chemistry/University of Sao Paulo, Av. Trabalhador sao-carlense, 400, 13566-590 Sao Carlos, São Paulo, Brazil.
| |
Collapse
|
39
|
Aragaw TA, Angerasa FT. Synthesis and characterization of Ethiopian kaolin for the removal of basic yellow (BY 28) dye from aqueous solution as a potential adsorbent. Heliyon 2020; 6:e04975. [PMID: 32995640 PMCID: PMC7505807 DOI: 10.1016/j.heliyon.2020.e04975] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/13/2020] [Accepted: 09/16/2020] [Indexed: 11/05/2022] Open
Abstract
In the present research, the kaolin adsorbents (beneficiated, raw powder, and calcined) were prepared from Ethiopian natural kaolin through mechanical, wet, and thermal processes. The geochemical and surface properties of kaolin adsorbent were characterized using FTIR, SEM/EDS, XRD, and XRF. In the batch experiment, basic operation parameters (initial dye concentrations, pH, temperature, contact time, and adsorbent dosage) were examined. Percentage removal efficiency basic yellow 28 (BY28) dye were recorded as 94.79%, 92.08%, and 87.08% onto beneficiated, raw, and calcined kaolin absorbents, respectively at an initial dye concentration of 20 mg/L, solution pH of 9, the temperature of 30 °C°C , and contact time of 60 min and adsorbent dosage of 1g/100L. The molar ratio of SiO2/Al2O3 was recorded as 2.911 Percent mass composition of Ethiopian kaolin which is higher than the expected pure kaolinite standard which allows us to classify the kaolin clay as a siliceous one. The calculated values of Δ G 0 for beneficiated adsorbent are -1.243, 1.576, and 4.396 kJ/mol at 303.15, 323.15, and 343.15 K, respectively for 20 mg/L of dye concentration and solution pH of 9, suggests that the thermodynamic behavior at lowest temperature is more feasible and spontaneous as compared with the higher temperature one. A similar fashion was calculated for raw and calcined adsorbents. The negative values of ΔHo and ΔS° suggest that the adsorption phenomenon is exothermic and the adsorbate molecules are organized on the solid phase in a more disordered fashion than the liquid phase. The pseudo-first-order and pseudo-second-order models have been used to describe the kinetics in the adsorption processes. The Pseudo-second-order model has been fitted for the BY 28 dye adsorption in the studied concentration range. The adsorption of BY 28 dye for raw and calcined adsorbents follows the Langmuir isotherm and the Freundlich isotherm fitted for the beneficiated adsorbent. The amount of BY28 dye taken up by beneficiated, raw, and calcined kaolin adsorbents was found as 1.896, 1.842, and 1.742 mg/g, respectively at a contact time of 1.0 h, the adsorbent dosage of 1.0 g, initial dye concentration = 20 mg/L and solution pH = 9 at 30 °C. The results found that these raw and prepared local kaolin adsorbents have a capacity as low-cost alternatives for the removal of dyes in industrial wastewater.
Collapse
Affiliation(s)
- Tadele Assefa Aragaw
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Bahir Dar, Ethiopia
| | - Fikiru Temesgen Angerasa
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Bahir Dar, Ethiopia
| |
Collapse
|
40
|
Mruthunjayappa MH, Sharma VT, Dharmalingam K, Sanna Kotrappanavar N, Mondal D. Engineering a Biopolymer-Based Ultrafast Permeable Aerogel Membrane Decorated with Task-Specific Fe-Al Nanocomposites for Robust Water Purification. ACS APPLIED BIO MATERIALS 2020; 3:5233-5243. [PMID: 35021698 DOI: 10.1021/acsabm.0c00630] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The present work demonstrates an innovative strategy for robust water purification using an engineered aerogel membrane fabricated from biopolymers and task-specific Fe-Al-based nanocomposites. The as-prepared ethylenediaminetetraacetate dianhydride cross-linked chitosan- and agarose (7:3 weight ratio)-based aerogel membrane decorated with α-FeOOH- and γ-AlOOH-based nanocomposites was characterized using various analytical tools, which suggested formation of a highly stable network interconnected through covalent and electrostatic interactions. The optimized bionanocomposite-based aerogel (BNC-AG-0.1) membrane showed macroporous and partial unidirectional short-range channels with an ultralow density of 0.021 g·m-2, a high swelling ratio of 1974%, and a remarkable pure water flux of 19,228 L·m-2·h-1 (>6-fold higher flux compared to the reported aerogel membranes). The aerogel membranes were successfully utilized for purification of diverse pollutants such as dyes, emerging pollutants (EPs), arsenate, and fluoride in a continuous flow method under gravitational force. The BNC-AG-0.1 membrane exhibits high rejection (95-98.6%) for both cationic and anionic dyes with a flux rate of 1150-1375 L·m-2·h-1 and a rejection of 89-92% for EPs with a flux rate of 1098-1165 L·m-2·h-1. Moreover, the BNC-AG-0.1 membrane showed a qmax of 102.45 mg·g-1 (at pH 6.5) for As(V) with >93% rejection at a flow rate of 1000 L·m-2·h-1. Furthermore, the aerogel membrane showed an excellent removal efficiency (92%) of arsenic up to the 10th cycle and hence demonstrated as a potential adsorption-based membrane for arsenic-free potable water. On the other hand, the BNC-AG-0.1 membrane showed a qmax of 81.56 mg·g-1 (at pH 6.5) for F- removal with >99% rejection at a flow rate of 250 L·m-2·h-1. When applied for real-water purification, approximately 4734 L of safe drinking water (the F- concentration is less than the WHO permissible limit) per square meter of the aerogel membrane can be obtained with a flux rate of 250 L·m-2·h-1. Overall, the prepared aerogel membrane showed robust removal of a variety of contaminants with ultrafast water permeation and established excellent recyclability.
Collapse
Affiliation(s)
| | - Vibha T Sharma
- Centre for Nano & Material Science, JAIN (Deemed to be University), Jain Global Campus, Bangalore 562112, India
| | - Kalpana Dharmalingam
- Central Electrochemical Research Institute-Madras Unit, CSIR Madras Complex, Taramani, Chennai 600 113, India
| | - Nataraj Sanna Kotrappanavar
- Centre for Nano & Material Science, JAIN (Deemed to be University), Jain Global Campus, Bangalore 562112, India.,IMDEA Water Institute, Parque Científico Tecnológico de la Universidad de Alcalá, Avenida Punto Com, 2, Alcalá de Henares, 28805 Madrid, Spain
| | - Dibyendu Mondal
- Centre for Nano & Material Science, JAIN (Deemed to be University), Jain Global Campus, Bangalore 562112, India
| |
Collapse
|
41
|
Eco-friendly poly(lactic acid) microbeads for cosmetics via melt electrospraying. Int J Biol Macromol 2020; 157:734-742. [DOI: 10.1016/j.ijbiomac.2019.11.240] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 11/25/2019] [Accepted: 11/30/2019] [Indexed: 02/06/2023]
|
42
|
Gauzit Amiel A, Palomino-Durand C, Maton M, Lopez M, Cazaux F, Chai F, Neut C, Foligné B, Martel B, Blanchemain N. Designed sponges based on chitosan and cyclodextrin polymer for a local release of ciprofloxacin in diabetic foot infections. Int J Pharm 2020; 587:119677. [PMID: 32717280 DOI: 10.1016/j.ijpharm.2020.119677] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/17/2020] [Accepted: 07/18/2020] [Indexed: 12/21/2022]
Abstract
Diabetic foot infections are the most common complications requiring hospitalisation of patients with diabetes. They often result in amputation to extremities and are associated with high morbi-mortality rates, especially when bone is infected. Treatment of these complications is based on surgical procedures, nursing care and systemic antibiotic therapy for several weeks, with a significant risk of relapse. Due to low blood flow and damage caused by diabetic foot infection, blood supply is decreased, causing low antibiotic diffusion in the infected site and an increase of possible bacterial resistance, making this type of infection particularly difficult to treat. In this context, the aim of this work was to develop a medical device for local antibiotic release. The device is a lyophilized physical hydrogel, i.e a sponge based on two oppositely charged polyelectrolytes (chitosan and poly(cyclodextrin citrate)). Cyclodextrins, via inclusion complexes, increase drug bioavailability and allow an extended release. Using local release administration increases concentrations in the wound without risk of toxicity to the body and prevents the emergence of resistant bacteria. The hydrogel was characterised by rheology. After freeze-drying, a curing process was implemented. The swelling rate and cell viability were evaluated, and finally, the sponge was impregnated with a ciprofloxacin solution to evaluate its drug release profile and its antibacterial activity.
Collapse
Affiliation(s)
- A Gauzit Amiel
- Univ. Lille, INSERM, CHU Lille, U1008 - Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France
| | - C Palomino-Durand
- Univ. Lille, INSERM, CHU Lille, U1008 - Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France
| | - M Maton
- Univ. Lille, INSERM, CHU Lille, U1008 - Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France
| | - M Lopez
- Univ. Lille, INSERM, CHU Lille, U1008 - Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France
| | - F Cazaux
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France
| | - F Chai
- Univ. Lille, INSERM, CHU Lille, U1008 - Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France
| | - C Neut
- Univ. Lille, INSERM, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France
| | - B Foligné
- Univ. Lille, INSERM, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France
| | - B Martel
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France
| | - N Blanchemain
- Univ. Lille, INSERM, CHU Lille, U1008 - Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France.
| |
Collapse
|
43
|
Smart multi-tasking PDMS Nanocomposite sponges for microbial and oil contamination removal from water. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02109-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
44
|
Synthesis and Characterization of Lyophilized Chitosan-Based Hydrogels Cross-Linked with Benzaldehyde for Controlled Drug Release. J CHEM-NY 2020. [DOI: 10.1155/2020/8747639] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
In this study, chitosan-based hydrogels were produced by incorporating three drugs with a different solubility into a polymer matrix. The lyophilized chitosan salt was prepared using an innovative and less-expensive synthetic process by the freeze-drying technique. Firstly, the three drugs (caffeine, ascorbic acid, and 5-fluorouracil (5-FU)) were selected as model drugs to test the in vitro release behavior of the hydrogel. The drugs were solubilized in chitosan salt, lyophilized, and cross-linked with benzaldehyde involving the formation of a Schiff base with (–C=N-) linkage to produce a physical hydrogel. Subsequently, the physicochemical properties of N-benzyl chitosan and lyophilized chitosan salt were evaluated by Fourier-transform infrared (FTIR) spectra, scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The intrinsic viscosity of the conventional chitosan was determined by the Mark–Houwink–Sakurada equation. Moreover, the kinetics of hydrogel swelling and drug release were studied by the UV-visible method at physiological conditions (pH = 7.4 at 37°C). The results show that lyophilized N-benzyl chitosan had a maximum swelling ratio of 720 ± 2% by immersion in phosphate-buffered saline solutions (PBS) (pH = 7.4 at 37°C). In vitro drug releases were evaluated in PBS, and the obtained results show that the maximum drug release after 24 h was 42% for caffeine, 99% for 5-FU, and 94% for ascorbic acid. Then, to optimize the cumulative release of caffeine, Tween 20 was added and 98% as a release percentage was obtained. The drug-loading results were investigated with the Korsmeyer–Peppas kinetic model and applied to determine the drug release mechanism.
Collapse
|
45
|
Prasannan A, Udomsin J, Tsai HC, Sivakumar M, Hu CC, Wang CF, Hung WS, Lai JY. Special wettable underwater superoleophobic material for effective simultaneous removal of high viscous insoluble oils and soluble dyes from wastewater. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
46
|
Nam HC, Park WH. Aliphatic Polyester-Based Biodegradable Microbeads for Sustainable Cosmetics. ACS Biomater Sci Eng 2020; 6:2440-2449. [PMID: 33455355 DOI: 10.1021/acsbiomaterials.0c00017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Marine pollution stemming from plastic microbeads (MBs) in personal care products has been substantially increased because of their nonbiodegradability and high adsorption capacity against persistent organic pollutants (POPs) in seawater. Moreover, the manufacturing process of MBs has been based on wet processes, such as emulsification, microfluidics, and precipitation. Therefore, a green process for obtaining biodegradable MBs is urgently necessary. Aliphatic polyesters, such as poly(lactic acid) (PLA, radiation-degradable) and poly(ε-caprolactone) (PCL, radiation-cross-linkable), have biodegradability and melt processability. The eco-friendly melt electrospraying process is a simple and cost-effective method for the preparation of MBs without the need for organic reagents. In this study, the PLA and PCL MBs were obtained by adjusting the main processing parameters during the melt electrospraying process. The weight losses of PLA and PCL MBs in aqueous environments occurred faster than those of positive controls, and the thermal transition parameters were decreased with the hydrolytic degradation of MBs. In the POP adsorption test, the biodegradable MBs showed poor adsorption because of their low specific surface area. The results of the cleansing efficiency test indicated that biodegradable MBs have great potential as more sustainable cosmetics to replace nondegradable MBs.
Collapse
Affiliation(s)
- Hyeong Chan Nam
- Department of Organic Materials Engineering, College of Engineering, Chungnam National University, Daejeon 34134, South Korea
| | - Won Ho Park
- Department of Organic Materials Engineering, College of Engineering, Chungnam National University, Daejeon 34134, South Korea
| |
Collapse
|
47
|
Adeogun AI, Osideko OA, Idowu MA, Shappur V, Akinloye OA, Ramesh Babu B. Chitosan supported CoFe2O4 for the removal of anthraquinone dyes: kinetics, equilibrium and thermodynamics studies. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2552-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
|
48
|
Gai S, Zhang J, Fan R, Xing K, Chen W, Zhu K, Zheng X, Wang P, Fang X, Yang Y. Highly Stable Zinc-Based Metal-Organic Frameworks and Corresponding Flexible Composites for Removal and Detection of Antibiotics in Water. ACS APPLIED MATERIALS & INTERFACES 2020; 12:8650-8662. [PMID: 31951369 DOI: 10.1021/acsami.9b19583] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Antibiotic contamination of water bodies is a major environmental concern. Exposure to superfluous antibiotics is an ecological stressor correlated to the development of antibiotic resistance. Thus, it is imperative that effective methods are developed to simultaneously detect and remove such antibiotics so as to avoid inadvertent release. Herein, two flexible three-dimensional (3D) zinc-based metal-organic frameworks (MOFs) {[Zn2(bcob)(OH)(H2O)]·DMA}n (ROD-Zn1) and {[Zn(Hbcob)]·(solvent)}n (ROD-Zn2) (H3bcob = 1,3-bis((4'-carboxylbenzyl)oxy)benzoic acid) with rod second building units (SBUs) are successfully prepared. Their exceptional water and chemical stabilities (toward both acid and base), fast sorption kinetics, and unique framework endow the MOFs with excellent uptake capacity toward various antibiotics in the aqueous environment. The adsorption performance was further optimized by one-pot preparation of MOF-melamine foam (MF) hybrid composites, resulting in a hierarchical microporous-macroporous MOF@MF system (ROD-Zn1@MF and ROD-Zn2@MF), which are readily recyclable after adsorptive capture. The mechanisms of adsorption have been deeply investigated by static and competitive adsorption experiments. In addition, the MOFs exhibit excellent fluorescent properties and quenched by trace amounts of antibiotics in water solution. Therefore, ROD-Zn1 and ROD-Zn2 present a dual-functional performance, being promising candidates for detection and removal of antibiotics.
Collapse
Affiliation(s)
- Shuang Gai
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. of China
| | - Jian Zhang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. of China
| | - Ruiqing Fan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. of China
| | - Kai Xing
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. of China
| | - Wei Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. of China
| | - Ke Zhu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. of China
| | - Xubin Zheng
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. of China
| | - Ping Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. of China
| | - Xikui Fang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. of China
| | - Yulin Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. of China
| |
Collapse
|
49
|
Tseng IH, Liu ZC, Chang PY. Bio-friendly titania-grafted chitosan film with biomimetic surface structure for photocatalytic application. Carbohydr Polym 2020; 230:115584. [DOI: 10.1016/j.carbpol.2019.115584] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 11/05/2019] [Accepted: 11/06/2019] [Indexed: 11/30/2022]
|
50
|
Basu P, Chakraborty J, Ganguli N, Mukherjee K, Acharya K, Satpati B, Khamrui S, Mandal S, Banerjee D, Goswami D, Nambissan PMG, Chatterjee K. Defect-Engineered MoS 2 Nanostructures for Reactive Oxygen Species Generation in the Dark: Antipollutant and Antifungal Performances. ACS APPLIED MATERIALS & INTERFACES 2019; 11:48179-48191. [PMID: 31795638 DOI: 10.1021/acsami.9b12988] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Meticulous surface engineering of layered structures toward new functionalities is a demanding challenge to the scientific community. Here, we introduce defects on varied MoS2 surfaces by suitable doping of nitrogen atoms in a sulfur-rich reaction environment, resulting in stable and scalable phase conversion. The experimental characterizations along with the theoretical calculations within the framework of density functional theory establish the impact of nitrogen doping on stabilization of defects and reconstruction of the 2H to 1T phase. The as-synthesized MoS2 samples exhibit excellent dye removal capacity in the dark, facilitated by a synergistic effect of reactive oxygen species (ROS) generation and adsorption. Positron annihilation spectroscopy and electron paramagnetic resonance studies substantiate the role of defects and associated sulfur vacancies toward ROS generation in the dark. Further, on the basis of its ample ROS generation in the dark and in the light, the commendable antimicrobial activity of the prepared MoS2 samples against fungal pathogen Alternaria alternata has been demonstrated. Thus, the present study opens up a futuristic avenue to develop newer functional materials through defect engineering by suitable dopants toward superior performances in environment issues.
Collapse
Affiliation(s)
- Parbati Basu
- Department of Physics , Vidyasagar University , Midnapore 721102 , India
| | | | - Nirmal Ganguli
- Department of Physics , IISER Bhopal , Bhauri, Bhopal 462066 , India
| | - Khushi Mukherjee
- Molecular And Applied Mycology and Plant Pathology Laboratory, Department of Botany , University of Calcutta , Kolkata 700019 , India
| | - Krishnendu Acharya
- Molecular And Applied Mycology and Plant Pathology Laboratory, Department of Botany , University of Calcutta , Kolkata 700019 , India
| | | | - Sudipta Khamrui
- Department of Physics , IIT Kharagpur , Kharagpur 721302 , India
| | - Suman Mandal
- Department of Physics , IIT Kharagpur , Kharagpur 721302 , India
| | | | - Dipak Goswami
- Department of Physics , IIT Kharagpur , Kharagpur 721302 , India
| | | | - Kuntal Chatterjee
- Department of Physics , Vidyasagar University , Midnapore 721102 , India
| |
Collapse
|