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Mehmood S, Akhtar N, Arshad M, Azhar U, Ullah S, Waris TS, Jabbar F, Hasan A, Iqbal F, Chaudhry AA, Rehman IU, Yar M. A novel methodology for stabilization of silver nanoparticles on cotton, nylon and cotton/nylon fabrics using chitosan and triethyl orthoformate for enhanced and elongated antibacterial performance. Int J Biol Macromol 2024; 267:129256. [PMID: 38493823 DOI: 10.1016/j.ijbiomac.2024.129256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 01/03/2024] [Indexed: 03/19/2024]
Abstract
In the present study, the commercially available three different fabrics cotton, nylon and cotton/nylon were modified by chitosan and silver nanoparticles using a crosslinker triethyl orthoformate (TEOF). Resulted cotton‑silver (Ag-Cs-Cot), nylon‑silver (Ag-Cs-Nyl) and cotton-nylon silver (Ag-Cs-Cot-Nyl) fabrics showed significant anti-bacterial activity even after 50 washing cycles. Silver nanoparticles were prepared by reducing silver nitrate through sodium borohydride at 0 °C. In FTIR spectra the peak at near 1650 cm-1 confirmed that TEOF mediated attachment of chitosan with fabrics (due to C=N) and the stretching of secondary amine near the 3375 cm-1 indicated the silver attachment to the amine group of the chitosan. In Scanning Electron Microscope (SEM) images smooth surfaces of fabrics without any damage by modification process were observed. The antibacterial activity was Analyzed by agar diffusion and broth dilution assays against Escherichia coli and Staphylococcus aureus bacterial strains and results showed 90% bacterial inhibition against E. coli and 89% bacterial inhibition against S. aureus. For testing the antibacterial durability, the modified fabrics were washed with non-ionic detergent (10g/l) for 15 minutes under aggressive stirring (100 rpm) at room temperature. The modified fabrics retained antibacterial activity over the 50 washing cycles. Finally, the commercial potential of cotton-silver fabric was evaluated by stitching it with the socks of football players and interestingly results showed that the modified fabric on the socks showed more than 90% bacterial inhibition as compared to the plain fabric after 70 minutes of playing activity.
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Affiliation(s)
- Sadia Mehmood
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Naeem Akhtar
- Institute of Chemical Sciences, Bahauddin Zakariya University (BZU), Multan 60800, Pakistan
| | - Muhammad Arshad
- Institute of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Usaid Azhar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Saleem Ullah
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Tayyba Sher Waris
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Faiza Jabbar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; Biomedical Research Center, Qatar University, Doha 2713, Qatar
| | - Farasat Iqbal
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Ihtesham Ur Rehman
- School of Medicine, University of Central Lancashire, Preston, Lancashire PR1 2HE, United Kingdom of Great Britain and Northern Ireleand
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan.
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Waris TS, Shah STA, Mehmood A, Mushtaq A, Zehra M, Zulfiqar S, Andleeb A, Jabbar F, Anjum MA, Anwar Chaudhry A, Rehman IU, Yar M. Chitosan-sodium percarbonate-based hydrogels with sustained oxygen release potential stimulated angiogenesis and accelerated wound healing. J Biomed Mater Res B Appl Biomater 2024; 112:e35344. [PMID: 37942693 DOI: 10.1002/jbm.b.35344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 09/28/2023] [Accepted: 10/14/2023] [Indexed: 11/10/2023]
Abstract
The prolonged hypoxic conditions hinder chronic wounds from healing and lead to severe conditions such as delayed re-epithelialization and enhanced risk of infection. Multifunctional wound dressings are highly required to address the challenges of chronic wounds. Herein, we report polyurethane-coated sodium per carbonate-loaded chitosan hydrogel (CSPUO2 ) as a multifunctional dressing. The hydrogels (Control, CSPU, and CSPUO2 ) were prepared by freeze gelation method and the developed hydrogels showed high porosity, good absorption capacity, and adequate biodegradability. The release of oxygen from the CSPUO2 hydrogel was confirmed by the increase in pH and a sustained oxygen release was observed over the period of 21 days, due to polyurethane (CSPU) coating. The CSPUO2 hydrogel exhibited around 2-fold increased angiogenic potential in CAM assay when compared with Control and CSPU dressing. CSPUO2 also showed good level of antibacterial efficacy against E. coli and S. aureus. In a full-thickness rat wound model, CSPUO2 hydrogel considerably accelerated wound healing with exceptional re-epithelialization granulation tissue formation less inflammatory cells and improved skin architecture highlighting the tremendous therapeutic potential of this hydrogel when compared with control and CSPU to treat chronic diabetic and burn wounds.
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Affiliation(s)
- Tayyba Sher Waris
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | | | - Azra Mehmood
- Centre for Excellence in Molecular Biology, University of the Punjab, Quaid-i-Azam Campus, Lahore, Pakistan
| | - Afaq Mushtaq
- Centre for Excellence in Molecular Biology, University of the Punjab, Quaid-i-Azam Campus, Lahore, Pakistan
| | - Mubashra Zehra
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | - Saima Zulfiqar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | - Anisa Andleeb
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | - Faiza Jabbar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | - Muhammad Awais Anjum
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | - Ihtesham Ur Rehman
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
- School of Medicine, University of Central Lancashire, Preston, UK
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
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Bukhari A, Yar M, Zahra F, Nazir A, Iqbal M, Shah SAA, Yasir M, Al-Mijalli SH, Ahmad N. A novel formulation of triethyl orthoformate mediated durable, smart and antibacterial chitosan cross-linked cellulose fabrics. Int J Biol Macromol 2023; 253:126813. [PMID: 37690650 DOI: 10.1016/j.ijbiomac.2023.126813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 08/29/2023] [Accepted: 09/07/2023] [Indexed: 09/12/2023]
Abstract
Antibacterial, durable and smart cotton fabrics was developed using chitosan-based formulation. The cellulose was covalently cross-linked with chitosan using TEOF. The antibacterial activity of prepared smart fabrics and CS was studied against S. aureus and E. coli strains. The FTIR, SEM and XRD were employed to confirm the linkage of CS molecules with cellulose in cotton fabrics. The CS of 160 KDa extracted from shrimp shell showed the optimum antibacterial activity. The prominent asymmetric, symmetric alkyl CH peaks of CS were shifted to 2930 and 2845 (cm-1), respectively. Moreover, the shifted peaks at 1590 and 1400 (cm-1) indicate the CO stretching and NH2 bending bands of CS, respectively. This confirm the existence of new imine functional group that was generated after cross-linking of NH2 groups of CS. The SEM results showed more uniform morphology of TEOF cross-linked fabrics versus CS coated fabrics, which revealed a promising microbial growth inhibition activity. The TEOF as a cross-linker has been unveiled, showcasing the effectiveness of this innovative crosslinking approach. The fabric treated with cross-linked CS exhibited remarkable antibacterial properties that endured even after undergoing 30 washing cycles. These antibacterial textiles possess substantial commercial potential across a diverse range of industries.
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Affiliation(s)
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Fatima Zahra
- Department of Chemistry, The University of Lahore, Lahore, Pakistan
| | - Arif Nazir
- Department of Chemistry, The University of Lahore, Lahore, Pakistan.
| | - Munawar Iqbal
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
| | | | - Muhammad Yasir
- Department of Chemistry, The University of Lahore, Lahore, Pakistan
| | - Samiah H Al-Mijalli
- Department of Biology, College of Sciences, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Naveed Ahmad
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
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Sarfaraz S, Yar M, Hussain A, Lakhani A, Gulzar A, Ans M, Rashid U, Hussain M, Muhammad S, Bayach I, Sheikh NS, Ayub K. Metallofullerenes as Robust Single-Atom Catalysts for Adsorption and Dissociation of Hydrogen Molecules: A Density Functional Study. ACS Omega 2023; 8:36493-36505. [PMID: 37810689 PMCID: PMC10552115 DOI: 10.1021/acsomega.3c05477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 08/31/2023] [Indexed: 10/10/2023]
Abstract
Hydrogen is currently considered as the best alternative for traditional fuels due to its sustainable and ecofriendly nature. Additionally, hydrogen dissociation is a critical step in almost all hydrogenation reactions, which is crucial in industrial chemical production. A cost-effective and efficient catalyst with favorable activity for this step is highly desirable. Herein, transition-metal-doped fullerene (TM@C60) complexes are designed and investigated as single-atom catalysts for the hydrogen splitting process. Interaction energy analysis (Eint) is also carried out to demonstrate the stability of designed TM@C60 metallofullerenes, which reveals that all the designed complexes have higher thermodynamic stability. Furthermore, among all the studied metallofullerenes, the best catalytic efficiency for hydrogen dissociation is seen for the Sc@C60 catalyst Ea = 0.13 eV followed by the V@C60 catalyst Ea = 0.19 eV. The hydrogen activation and dissociation processes over TM@C60 metallofullerenes is further elaborated by analyzing charge transfer via the natural bond orbital and electron density difference analyses. Additionally, quantum theory of atoms in molecule analysis is carried out to investigate the nature of interatomic interactions between hydrogen molecules and TMs@C60 metallofullerenes. Overall, results of the current study declare that the Sc@C60 catalyst can act as a low cost, highly efficient, and noble metal-free single-atom catalyst to efficiently catalyze hydrogen dissociation reaction.
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Affiliation(s)
- Sehrish Sarfaraz
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Muhammad Yar
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Ajaz Hussain
- Institute
of Chemical Sciences, Bahauddin Zakariya
University, Multan 60800, Pakistan
| | - Ahmed Lakhani
- Department
of Biomedical and Health Sciences, Calumet
College of St. Joseph, 2400, New York Avenue, Whiting, Indiana 46394, United States
| | - Adnan Gulzar
- Center
of Theoretical Chemistry, Ruhr-Universitat
Bochum, Bochum 44780, Germany
| | - Muhammad Ans
- Department
of Chemistry, University of Agriculture
Faisalabad, Faisalabad 38000, Pakistan
| | - Umer Rashid
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Masroor Hussain
- Department
of Data Science, Ghulam Ishaq Khan Institute
of Engineering Sciences and Technology, Topi 23460, KPK, Pakistan
| | - Shabbir Muhammad
- Department
of Physics, College of Science, King Khalid
University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Imene Bayach
- Department
of Chemistry, College of Science, King Faisal
University, Al-Ahsa 31982, Saudi Arabia
| | - Nadeem S. Sheikh
- Chemical
Sciences, Faculty of Science, Universiti
Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Khurshid Ayub
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
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Samreen HS, Hussain A, Yar M, Alshammari MB, Ayub K, Adeel M, Tariq M, Lateef M, Bakht MA, Rasool F. Photophysical and biological aspects of α, β-unsaturated ketones: Experimental and in silico approach. J Biochem Mol Toxicol 2023; 37:e23433. [PMID: 37394811 DOI: 10.1002/jbt.23433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 04/04/2023] [Accepted: 06/12/2023] [Indexed: 07/04/2023]
Abstract
In this work, four fluorinated α, β-unsaturated ketones named as 3-(3-bromophenyl)-1-(3-(trifluoromethyl)phenyl)prop-2-en-1-one (1), 3-(4-methoxyphenyl)-1-(3-(trifluoromethyl)phenyl) prop-2-en-1-one (2), 3-(3-bromo-5-chloro-2-hydroxyphenyl)-1-(3-(trifluoromethyl)phenyl) prop-2-en-1-one (3) and 3-(2-hydroxy-5-methylphenyl)-1-(3-(trifluoromethyl)phenyl)prop-2-en-1-one (4) were synthesized by Claisen-Schmidt reaction. The synthesized molecules were then characterized through ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared (FTIR), 1 H-NMR, 13 C-NMR, and mass spectrometry. The antioxidant potential, Urease inhibition, and interaction of compounds 1-4 with Salmon sperm DNA were experimentally explored and supported by molecular docking studies. The synthesized compounds strongly interact with SS-DNA through intercalative mode. It was noticed that compound 1 served as potent Urease inhibitor while compound 4 as better antioxidant among synthesized compounds. Moreover, frontier molecular orbitals, nonlinear optical (NLO) properties, natural bond orbitals, molecular electrostatic potential, natural population analysis, and photophysical properties of synthesized compounds were accomplished through density functional theory and time-dependent density functional theory. The band gap of all the compounds have been worked out using Taucs method. In addition to that, a precise comparative account of UV and IR data obtained from theoretical and experimental findings showed good agreement between theoretical and experimental data. The findings of our studies reflected that compounds 1-4 possess better NLO properties than Urea standard and the band gap data also reflected their prospective use towards optoelectronic materials. The better NLO behavior of compounds was attributed to the noncentrosymmetric structure of synthesized compounds.
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Affiliation(s)
- Hafiza Saba Samreen
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Ajaz Hussain
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Yar
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Mohammed Battah Alshammari
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdul Aziz university, Al-Kharj, Saudi Arabia
| | - Khurshid Ayub
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Muhammad Adeel
- Institute of Chemical Sciences, Gomal University, Dera Ismaeel Khan, Pakistan
| | - Muhammad Tariq
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Mehreen Lateef
- Multidisciplinary Research Laboratories, Bahria University Medical and Dental College, Karachi, Pakistan
| | - Mohammed Afroz Bakht
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdul Aziz university, Al-Kharj, Saudi Arabia
| | - Faiz Rasool
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
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Abid S, Zulfiqar S, Anjum MA, Bullock AJ, MacNeil S, Yar M. An alginate-Based tube gel delivering 2-deoxy-D-ribose for stimulation of wound healing. J Biomater Appl 2023:8853282231191218. [PMID: 37477618 DOI: 10.1177/08853282231191218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
Developing multifunctional wound dressings capable of inducing rapid angiogenesis and with antibacterial activity would be attractive for diabetic and superficial wound healing. Hydrogels delivered from tubes have several desirable features -they are easy to apply, keep the wound moist, reduce the entry of microorganisms and avoid the need for painful dressing removal. Previously we reported that 2 deoxy-D-ribose (2dDR) delivered from a variety of dressings is capable of promoting wound healing by stimulating angiogenesis. Alginate hydrogels are an ideal vehicle to deliver a bioactive agent capable of promoting wound healing. In this study we developed and evaluated a tube hydrogel capable of delivering 2dDR with the aim of achieving a stable, convenient to administer and biologically effective wound treatment. Further, we included the stabilizer 2-phenoxy ethanol which provided antimicrobial activity. We synthesized hydrogels by the Green method, using simple mixing of sodium alginate, propylene glycol, 2-phenoxy ethanol and 2dDR in water. FTIR (Fourier transformation infrared spectroscopy) analysis confirmed an absence of undesirable chemical changes in the gel components, and SEM images of the freeze-dried gels showed porous structures. When 2dDR alginate gel (2dDR-SA hydrogel) was placed in PBS at 37°C, almost 92% of 2dDR was released within 7 days. When tested on cultured cells, 2dDR-SA hydrogels did not inhibit metabolic activity or proliferation, achieving up to 90 and 98% of control respectively over 7 days. 2dDR-SA hydrogel also showed anti-bacterial activity against E. coli, Pseudomonas aeruginosa, Staphylococcus aureus, and MRSA which was attributable to the stabilizer 2-phenoxy ethanol in the hydrogel. Stimulation of angiogenesis in the chorioallantoic membrane assay by 2dDR-SA hydrogel was found to be significant compared to the blank-SA. Wound healing potential was studied in full-thickness wounds in rats where acceleration of wound healing was seen. H&E staining of the wound tissue showed an enhanced number of blood vessels and re-epithelization, and a reduced number of inflammatory cells in 2dDR-SA treated animals compared to blank-hydrogels while Masson's trichrome staining showed increased collagen deposition. In summary we describe a convenient to apply hydrogel which has promise for use in a range of superficial skin wounds including applications in chronic wound care.
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Affiliation(s)
- Safina Abid
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Saima Zulfiqar
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Muhammad A Anjum
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Anthony J Bullock
- Kroto Research Institute, Department of Material Science and Engineering, University of Sheffield, Broad Lane, S3 7HQ Sheffield, United Kingdom
| | - Sheila MacNeil
- Kroto Research Institute, Department of Material Science and Engineering, University of Sheffield, Broad Lane, S3 7HQ Sheffield, United Kingdom
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
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Zahid Nasim S, Sarfaraz S, Jan F, Yar M, Ur Rehaman A. Computational insights of excited state intramolecular proton transfer (ESIPT) based fluorescent detection and imaging of γ-glutamytranspeptidase activity. Spectrochim Acta A Mol Biomol Spectrosc 2023; 299:122814. [PMID: 37201329 DOI: 10.1016/j.saa.2023.122814] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/15/2023] [Accepted: 04/29/2023] [Indexed: 05/20/2023]
Abstract
γ-Glutamytranspeptidase (GGT) is an important tumor biomarker that widely appears in the tumor cells. Therefore, accurate imaging and detection of GGT activity in live cells, serum and pathological cells grasp great importance for the diagnosis, management, and treatment of cancer. Herein, 2-(2-hydroxyl-phenyl)-6-chloro-4-(3H)-quinazolinone (HPQ) is considered as the fluorophore probe for the detection of GGT activity, which is known for the typical mechanism of excited-state intramolecular proton transfer (ESIPT). All the simulations adopted to evaluate the sensing mechanism were carried out via DFT and TDDFT calculations at CAM-B3LYP/TZVP level of theory. The emission properties of HPQ and HPQ-TD are thoroughly studied to understand the photoinduced electron transfer (PET) and excited state intramolecular proton transfer (ESIPT) process. The results reveal that the fluorescence quenching of HPQ (enol form) is assigned to the PET process, whereas the large Stokes shift in fluorescence emission of HPQ (keto form) is related with ESIPT mechanism. The obtained results are further cross validated by frontier molecular orbital (FMO) analysis, geometric analysis, and potential energy curve (PEC) scanning. Our calculations provide powerful evidence for the ESIPT based sensing mechanism of HPQ (keto-enol form) for GGT activity.
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Affiliation(s)
- Sayed Zahid Nasim
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Sehrish Sarfaraz
- Department of Chemistry, COMSATS University, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Faheem Jan
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China; School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, Liaoning, China.
| | - Muhammad Yar
- Department of Chemistry, COMSATS University, Abbottabad Campus, Abbottabad 22060, Pakistan.
| | - Attiq Ur Rehaman
- Department of Chemistry, COMSATS University, Abbottabad Campus, Abbottabad 22060, Pakistan
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Sarfaraz S, Yar M, Sheikh NS, Bayach I, Ayub K. Transition Metal-Doped C 20 Fullerene-Based Single-Atom Catalysts with High Catalytic Activity for Hydrogen Dissociation Reaction. ACS Omega 2023; 8:14077-14088. [PMID: 37091387 PMCID: PMC10116631 DOI: 10.1021/acsomega.3c00721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 03/30/2023] [Indexed: 05/03/2023]
Abstract
Hydrogen dissociation is a key step in almost all hydrogenation reactions; therefore, an efficient and cost-effective catalyst with a favorable band structure for this step is highly desirable. In the current work, transition metal-based C20 (M@C20) complexes are designed and evaluated as single-atom catalysts (SACs) for hydrogen dissociation reaction (HDR). Interaction energy (E int) analysis reveals that all the M@C20 complexes are thermodynamically stable, whereas the highest stability is observed for the Ni@C20 complex (E int = -6.14 eV). Moreover, the best catalytic performance for H2 dissociation reaction is computed for the Zn@C20 catalyst (E ads = 0.53 eV) followed by Ti@C20 (E ads = 0.65 eV) and Sc@C20 (E ads = 0.76 eV) among all considered catalysts. QTAIM analyses reveal covalent or shared shell interactions in H2* + M@C20 systems, which promote the process of H2 dissociation over M@C20 complexes. NBO and EDD analyses declare that transfer of charge from the metal atom to the antibonding orbital of H2 causes dissociation of the H-H bond. Overall outcomes of this study reveal that the Zn@C20 catalyst can act as a highly efficient, low-cost, abundant, and precious metal-free SAC to effectively catalyze HDR.
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Affiliation(s)
- Sehrish Sarfaraz
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, KPK, Abbottabad 22060, Pakistan
| | - Muhammad Yar
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, KPK, Abbottabad 22060, Pakistan
| | - Nadeem S. Sheikh
- Chemical
Sciences, Faculty of Science, Universiti
Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Imene Bayach
- Department
of Chemistry, College of Science, King Faisal
University, Al-Ahsa 31982, Saudi Arabia
| | - Khurshid Ayub
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, KPK, Abbottabad 22060, Pakistan
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Iqbal M, Hussain A, Naz A, Hussain R, Yar M, Ayub K, Shah Gilani MRH, Imran M, Assiri MA. Tailoring the solar cell efficiency of Y-series based non-fullerene acceptors through end cap modification. Spectrochim Acta A Mol Biomol Spectrosc 2023; 291:122322. [PMID: 36652802 DOI: 10.1016/j.saa.2023.122322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/30/2022] [Accepted: 01/02/2023] [Indexed: 06/17/2023]
Abstract
Y-series-based non-fullerene acceptors (NFAs) have achieved significant deliberation by chemists and physicists because the promising optical and photochemical properties associated with high-performance OSCs can be further tuned through end-capped modification. In this work, such modifications of Y-series benzothiadiazole-based NFAs were accomplished theoretically to propose new acceptors for photovoltaic cells (PVCs). The recently synthesized Y-series non-fullerene acceptor m-BTP-PhC6 was taken as a reference acceptor. We designed five new acceptors (BTP1-BTP5) through the structural modification at both ends of acceptor groups and evaluated their performance by applying DFT and TD-DFT. The newly engineered molecules exhibited a narrower bandgap (Eg) than the reference (R) resulting in better intramolecular charge transfer (ICT). Further, the designed acceptors expressed the maximum absorption in the region of 600-800 nm revealing a redshift in their absorption spectrum. Low excitation energy and low exciton binding energy were noted for designed acceptors confirming them as better candidates for high PCE of solar cells. Low reorganizational energy for the mobility of holes and electrons was also observed for the designed molecules, indicating improved charge transfer properties. The newly tailored acceptor BTP4 was found to be the promising candidate among all acceptors because of lower bandgap, lower exciton binding energy, reorganizational energy, and redshift of the absorption spectrum. The complex analysis of BTP4 with donor polymer PTB7-Th and PM6 was executed at the same DFT level. Furthermore, FMOs studies showed relatively rich electron density in the acceptor groups of LUMO as compared to the reference molecule. The overall theoretical results of this study showed that the designed acceptors played a productive and effective role in uplifting the efficiency of fullerene-free energy devices.
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Affiliation(s)
- Muniba Iqbal
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Ajaz Hussain
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan.
| | - Asma Naz
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Riaz Hussain
- Department of Chemistry, University of Education, DG Khan Campus, Pakistan
| | - Muhammad Yar
- Department of Chemistry, COMSATS University, Abbottabad, Pakistan.
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University, Abbottabad, Pakistan
| | - M Rehan H Shah Gilani
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Muhammad Imran
- Department of Chemistry, Faculty of Science, King Khalid University, P.O.Box 9004, Abha 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O.Box 9004, Abha 61514, Saudi Arabia
| | - Mohammed A Assiri
- Department of Chemistry, Faculty of Science, King Khalid University, P.O.Box 9004, Abha 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O.Box 9004, Abha 61514, Saudi Arabia
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10
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Hammud HH, Yar M, Bayach I, Ayub K. Covalent Triazine Framework C 6N 6 as an Electrochemical Sensor for Hydrogen-Containing Industrial Pollutants. A DFT Study. Nanomaterials (Basel) 2023; 13:1121. [PMID: 36986015 PMCID: PMC10053058 DOI: 10.3390/nano13061121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/07/2023] [Accepted: 03/15/2023] [Indexed: 06/18/2023]
Abstract
Industrial pollutants pose a serious threat to ecosystems. Hence, there is a need to search for new efficient sensor materials for the detection of pollutants. In the current study, we explored the electrochemical sensing potential of a C6N6 sheet for H-containing industrial pollutants (HCN, H2S, NH3 and PH3) through DFT simulations. The adsorption of industrial pollutants over C6N6 occurs through physisorption, with adsorption energies ranging from -9.36 kcal/mol to -16.46 kcal/mol. The non-covalent interactions of analyte@C6N6 complexes are quantified by symmetry adapted perturbation theory (SAPT0), quantum theory of atoms in molecules (QTAIM) and non-covalent interaction (NCI) analyses. SAPT0 analyses show that electrostatic and dispersion forces play a dominant role in the stabilization of analytes over C6N6 sheets. Similarly, NCI and QTAIM analyses also verified the results of SAPT0 and interaction energy analyses. The electronic properties of analyte@C6N6 complexes are investigated by electron density difference (EDD), natural bond orbital analyses (NBO) and frontier molecular orbital analyses (FMO). Charge is transferred from the C6N6 sheet to HCN, H2S, NH3 and PH3. The highest exchange of charge is noted for H2S (-0.026 e-). The results of FMO analyses show that the interaction of all analytes results in changes in the EH-L gap of the C6N6 sheet. However, the highest decrease in the EH-L gap (2.58 eV) is observed for the NH3@C6N6 complex among all studied analyte@C6N6 complexes. The orbital density pattern shows that the HOMO density is completely concentrated on NH3, while the LUMO density is centred on the C6N6 surface. Such a type of electronic transition results in a significant change in the EH-L gap. Thus, it is concluded that C6N6 is highly selective towards NH3 compared to the other studied analytes.
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Affiliation(s)
- Hassan H. Hammud
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Muhammad Yar
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, KPK, Islamabad 22060, Pakistan
| | - Imene Bayach
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, KPK, Islamabad 22060, Pakistan
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11
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Arshad Y, Asghar M, Yar M, Bibi T, Ayub K. Transition Metal Doped Boron Nitride Nanocages as High Performance Nonlinear Optical Materials: A DFT Study. J Inorg Organomet Polym Mater 2023. [DOI: 10.1007/s10904-023-02546-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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12
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Khan A, Andleeb A, Azam M, Tehseen S, Mehmood A, Yar M. Aloe vera and ofloxacin incorporated chitosan hydrogels show antibacterial activity, stimulate angiogenesis and accelerate wound healing in full thickness rat model. J Biomed Mater Res B Appl Biomater 2023; 111:331-342. [PMID: 36053925 DOI: 10.1002/jbm.b.35153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 07/18/2022] [Accepted: 08/17/2022] [Indexed: 12/15/2022]
Abstract
Burns are potentially fatal and physically debilitating injuries, causing psychological and physical scars and result in chronic disabilities. A well vascularized wound bed is required to achieve complete and scar free wound closure. For many centuries, a variety of herbal plants have been used for wound healing, among these aloe vera (AV) has been found to be very effective in wound healing. Secondly, the main reason for delayed wound healing is bacterial infections. Ofloxacin (OX) has been reported as an active antibacterial drug for topical infections and it is effective against both positive and negative bacterial strains. In current research three different concentrations of OX (0.5, 2.5, and 5 mg) were loaded into chitosan (CS)/AV based hydrogels prepared by freeze gelation. The surface morphology of prepared CS/AV based OX loaded hydrogels were evaluated by scanning electron microscopy (SEM). In drug release analysis, 0.5 mg OX loaded hydrogel showed a sustained drug release behavior over 3 days period. An effective dose dependent antibacterial activity was exhibited by OX loaded hydrogels. Alamar Blue cells viability assay revealed that 0.5 mg OX hydrogel (CA 0.5 OX) showed comparatively better 3 T3 fibroblast cells proliferation as compared to CA 2.5 OX (2.5 mg OX) and CA 5 OX hydrogel (5 mg OX). Moreover, all OX loaded hydrogels showed good angiogenic activity in CAM bioassay while higher angiogenic potential was observed from CA 0.5 OX containing comparatively lower concentration of OX. These OX incorporated CS/AV based hydrogels are promising wound dressings for future clinical use.
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Affiliation(s)
- Ahmad Khan
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Anisa Andleeb
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Maryam Azam
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Saimoon Tehseen
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Azra Mehmood
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
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13
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Al-Faiyz YSS, Sarfaraz S, Yar M, Munsif S, Khan AA, Amin B, Sheikh NS, Ayub K. Efficient Detection of Nerve Agents through Carbon Nitride Quantum Dots: A DFT Approach. Nanomaterials (Basel) 2023; 13:251. [PMID: 36678006 PMCID: PMC9864457 DOI: 10.3390/nano13020251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 12/29/2022] [Accepted: 01/01/2023] [Indexed: 06/17/2023]
Abstract
V-series nerve agents are very lethal to health and cause the inactivation of acetylcholinesterase which leads to neuromuscular paralysis and, finally, death. Therefore, rapid detection and elimination of V-series nerve agents are very important. Herein, we have carried out a theoretical investigation of carbon nitride quantum dots (C2N) as an electrochemical sensor for the detection of V-series nerve agents, including VX, VS, VE, VG, and VM. Adsorption of V-series nerve agents on C2N quantum dots is explored at M05-2X/6-31++G(d,p) level of theory. The level of theory chosen is quite adequate in systems describing non-bonding interactions. The adsorption behavior of nerve agents is characterized by interaction energy, non-covalent interaction (NCI), Bader's quantum theory of atoms in molecules (QTAIM), frontier molecular orbital (FMO), electron density difference (EDD), and charge transfer analysis. The computed adsorption energies of the studied complexes are in the range of -12.93 to -17.81 kcal/mol, which indicates the nerve agents are physiosorbed onto C2N surface through non-covalent interactions. The non-covalent interactions between V-series and C2N are confirmed through NCI and QTAIM analysis. EDD analysis is carried out to understand electron density shifting, which is further validated by natural bond orbital (NBO) analysis. FMO analysis is used to estimate the changes in energy gap of C2N on complexation through HOMO-LUMO energies. These findings suggest that C2N surface is highly selective toward VX, and it might be a promising candidate for the detection of V-series nerve agents.
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Affiliation(s)
- Yasair S. S. Al-Faiyz
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Sehrish Sarfaraz
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Muhammad Yar
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Sajida Munsif
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Adnan Ali Khan
- Centre for Computational Materials Science, University of Malakand, Chakdara 18800, Pakistan
- Department of Chemistry, University of Malakand, Chakdara 18800, Pakistan
| | - Bin Amin
- Department of Physics, Abbottabad University of Science & Technology, Abbottabad 22010, Pakistan
| | - Nadeem S. Sheikh
- Chemical Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
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14
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Rasool F, Hussain A, Shamim Rizvi T, Yar M, Ayub K, Khalid M, Al-Harrasi A, Lateef M, Iqbal S. Combined experimental and computational approach toward biological, physicochemical and quantum chemical aspects of substituted 1-[5-Phenyl-3-(2-trifluoromethyl-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone. Results in Chemistry 2023. [DOI: 10.1016/j.rechem.2023.100772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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15
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Shah AB, Sarfaraz S, Yar M, Sheikh NS, Hammud HH, Ayub K. Remarkable Single Atom Catalyst of Transition Metal (Fe, Co & Ni) Doped on C 2N Surface for Hydrogen Dissociation Reaction. Nanomaterials (Basel) 2022; 13:nano13010029. [PMID: 36615939 PMCID: PMC9823351 DOI: 10.3390/nano13010029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/12/2022] [Accepted: 12/16/2022] [Indexed: 05/19/2023]
Abstract
Currently, hydrogen is recognized as the best alternative for fossil fuels because of its sustainable nature and environmentally friendly processing. In this study, hydrogen dissociation reaction is studied theoretically on the transition metal doped carbon nitride (C2N) surface through single atom catalysis. Each TMs@C2N complex is evaluated to obtain the most stable spin state for catalytic reaction. In addition, electronic properties (natural bond orbital NBO & frontier molecular orbital FMO) of the most stable spin state complex are further explored. During dissociation, hydrogen is primarily adsorbed on metal doped C2N surface and then dissociated heterolytically between metal and nitrogen atom of C2N surface. Results revealed that theFe@C2N surface is the most suitable catalyst for H2 dissociation reaction with activation barrier of 0.36 eV compared with Ni@C2N (0.40 eV) and Co@C2N (0.45 eV) complexes. The activation barrier for H2 dissociation reaction is quite low in case of Fe@C2N surface, which is comparatively better than already reported noble metal catalysts.
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Affiliation(s)
- Ahmed Bilal Shah
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Sehrish Sarfaraz
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Muhammad Yar
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Nadeem S. Sheikh
- Chemical Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei
| | - Hassan H. Hammud
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Correspondence: (H.H.H.); (K.A.)
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
- Correspondence: (H.H.H.); (K.A.)
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16
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Zubairi W, Tehseen S, Nasir M, Anwar Chaudhry A, Ur Rehman I, Yar M. A study of the comparative effect of cerium oxide and cerium peroxide on stimulation of angiogenesis: Design and synthesis of pro-angiogenic chitosan/collagen hydrogels. J Biomed Mater Res B Appl Biomater 2022; 110:2751-2762. [PMID: 35796648 DOI: 10.1002/jbm.b.35126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 06/16/2022] [Accepted: 06/25/2022] [Indexed: 12/15/2022]
Abstract
Poor angiogenesis at injury site is a major problem in chronic wounds, which could lead to limbs amputation in adverse cases. To overcome this issue, several efforts have made in literature and by our group as well to develop pro-angiogenic agents. For this purpose, metal oxides due to their oxidative potential have been studied and found very attractive agents. Cerium oxides are proven to be non-toxic and their biological studies have already proved their importance in preventing chronic inflammation, and neurological diseases among several others by modulating the intracellular reactive oxygen species. In current study, we report the synthesis and neovascularization activity of cerium oxide and cerium peroxide nanoparticles when loaded into chitosan and collagen hydrogel. The hydrogels were characterized by FTIR, SEM and XRD. The pro-angiogenic behavior of these hydrogels was studied by in-vivo CAM assay. It was found that cerium peroxide loaded material showed significantly increase in angiogenesis as compared to cerium oxide loaded materials. It was demonstrated that cerium peroxide hydrogels enhanced the angiogenic capability in CAM assay as compared to cerium oxide and hence holds good potential for chronic ulcer and burn wounds healing.
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Affiliation(s)
- Waliya Zubairi
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan.,Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | | | - Muhammad Nasir
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Ihtesham Ur Rehman
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan.,Engineering Department, Faculty of Science and Technology, Lancaster University, Lancaster, UK
| | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
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17
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Alkhalifah MA, Yar M, Bayach I, Sheikh NS, Ayub K. Covalent Organic Framework (C 6N 6) as a Drug Delivery Platform for Fluorouracil to Treat Cancerous Cells: A DFT Study. Materials (Basel) 2022; 15:7425. [PMID: 36363017 PMCID: PMC9654209 DOI: 10.3390/ma15217425] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Continuous studies are being carried out to explore new methods and carrier surfaces for target drug delivery. Herein, we report the covalent triazine framework C6N6 as a drug delivery carrier for fluorouracil (FU) and nitrosourea (NU) anti-cancer drugs. FU and NU are physiosorbed on C6N6 with adsorption energies of -28.14 kcal/mol and -27.54 kcal/mol, respectively. The outcomes of the non-covalent index (NCI) and quantum theory of atoms in molecules (QTAIM) analyses reveal that the FU@C6N6 and NU@C6N6 complexes were stabilized through van der Waals interactions. Natural bond order (NBO) and electron density difference (EDD) analyses show an appreciable charge transfer from the drug and carrier. The FU@C6N6 complex had a higher charge transfer (-0.16 e-) compared to the NU@C6N6 complex (-0.02 e-). Frontier molecular orbital (FMO) analysis reveals that the adsorption of FU on C6N6 caused a more pronounced decrease in the HOMO-LUMO gap (EH-L) compared to that of NU. The results of the FMO analysis are consistent with the NBO and EDD analyses. The drug release mechanism was studied through dipole moments and pH effects. The highest decrease in adsorption energy was observed for the FU@C6N6 complex in an acidic medium, which indicates that FU can easily be off-loaded from the carrier (C6N6) to a target site because the cancerous cells have a low pH compared to a normal cell. Thus, it may be concluded that C6N6 possesses the therapeutic potential to act as a nanocarrier for FU to treat cancer. Furthermore, the current study will also provide motivation to the scientific community to explore new surfaces for drug delivery applications.
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Affiliation(s)
- Mohammed A. Alkhalifah
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Muhammad Yar
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, KPK, Pakistan
| | - Imene Bayach
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Nadeem S. Sheikh
- Chemical Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, KPK, Pakistan
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18
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Shahzadi L, Ramzan A, Anjum A, Jabbar F, Khan AF, Manzoor F, Shahzad SA, Chaudhry AA, Rehman IU, Yar M. An efficient new method for electrospinning chitosan and heparin for the preparation of pro‐angiogenic nanofibrous membranes for wound healing applications. J Appl Polym Sci 2022. [DOI: 10.1002/app.53212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lubna Shahzadi
- Interdisciplinary Research Center in Biomedical Materials COMSATS University Islamabad, Lahore Campus Lahore Pakistan
| | - Amna Ramzan
- Centre of Excellence in Molecular Biology (CEMB) University of the Punjab Lahore Pakistan
| | - Awais Anjum
- Interdisciplinary Research Center in Biomedical Materials COMSATS University Islamabad, Lahore Campus Lahore Pakistan
| | - Faiza Jabbar
- Interdisciplinary Research Center in Biomedical Materials COMSATS University Islamabad, Lahore Campus Lahore Pakistan
| | - Ather Farooq Khan
- Interdisciplinary Research Center in Biomedical Materials COMSATS University Islamabad, Lahore Campus Lahore Pakistan
| | - Faisal Manzoor
- Interdisciplinary Research Center in Biomedical Materials COMSATS University Islamabad, Lahore Campus Lahore Pakistan
| | - Sohail Anjum Shahzad
- Department of Chemistry COMSATS University Islamabad, Abbottabad Campus Abbottabad Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Center in Biomedical Materials COMSATS University Islamabad, Lahore Campus Lahore Pakistan
| | | | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials COMSATS University Islamabad, Lahore Campus Lahore Pakistan
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19
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Mkrtchyan S, Jakubczyk M, Lanka S, Yar M, Mahmood T, Ayub K, Sillanpää M, Thomas CM, Iaroshenko VO. Mechanochemical Ni‐Catalysed Arylation of
ortho
‐Hydroxyarylenaminones: Synthesis of Isoflavones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- S. Mkrtchyan
- Department of Chemistry, Faculty of Natural Sciences Matej Bel University Tajovkého 40 97401 Banska Bystrica Slovakia)
| | - M. Jakubczyk
- Institute of Bioorganic Chemistry Polish Academy of Sciences Noskowskiego 12/14 61-704 Poznań Poland
| | - S. Lanka
- Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology Zeromskiego 116 90-924 Lodz Poland
| | - M. Yar
- Department of Chemistry COMSATS University Abbottabad Campus Abbottabad KPK 22060 Pakistan
| | - T. Mahmood
- Department of Chemistry COMSATS University Abbottabad Campus Abbottabad KPK 22060 Pakistan
| | - K. Ayub
- Department of Chemistry COMSATS University Abbottabad Campus Abbottabad KPK 22060 Pakistan
| | - M. Sillanpää
- Chemistry Department, College of Science King Saud University Riyadh Saudi Arabia
| | - C. M. Thomas
- Department of Chemistry, Faculty of Natural Sciences Matej Bel University Tajovkého 40 97401 Banska Bystrica Slovakia)
| | - V. O. Iaroshenko
- Department of Chemistry, Faculty of Natural Sciences Matej Bel University Tajovkého 40 97401 Banska Bystrica Slovakia)
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20
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Nawaz A, Zaman Safi S, Sikandar S, Zeeshan R, Zulfiqar S, Mehmood N, Alobaid HM, Rehman F, Imran M, Tariq M, Ali A, Emran TB, Yar M. Heparin-Loaded Alginate Hydrogels: Characterization and Molecular Mechanisms of Their Angiogenic and Anti-Microbial Potential. Materials (Basel) 2022; 15:ma15196683. [PMID: 36234025 PMCID: PMC9573464 DOI: 10.3390/ma15196683] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/14/2022] [Accepted: 09/20/2022] [Indexed: 05/06/2023]
Abstract
Background: Chronic wounds continue to be a global concern that demands substantial resources from the healthcare system. The process of cutaneous wound healing is complex, involving inflammation, blood clotting, angiogenesis, migration and remodeling. In the present study, commercially available alginate wound dressings were loaded with heparin. The purpose of the study was to enhance the angiogenic potential of alginate wound dressings and analyze the antibacterial activity, biocompatibility and other relevant properties. We also aimed to conduct some molecular and gene expression studies to elaborate on the mechanisms through which heparin induces angiogenesis. Methods: The physical properties of the hydrogels were evaluated by Fourier transform infrared spectroscopy (FTIR). Swelling ability was measured by soaking hydrogels in the Phosphate buffer at 37 °C, and cell studies were conducted to evaluate the cytotoxicity and biocompatibility of hydrogels in NIH3T3 (fibroblasts). Real-time PCR was conducted to check the molecular mechanisms of heparin/alginate-induced angiogenesis. The physical properties of the hydrogels were evaluated by Fourier transform infrared spectroscopy (FTIR). Results: FTIR confirmed the formation of heparin-loaded alginate wound dressing and the compatibility of both heparin and alginate. Among all, 10 µg/mL concentration of heparin showed the best antibacterial activity against E. coli. The swelling was considerably increased up to 1500% within 1 h. Alamar Blue assay revealed no cytotoxic effect on NIH3T3. Heparin showed good anti-microbial properties and inhibited the growth of E. coli in zones with a diameter of 18 mm. The expression analysis suggested that heparin probably exerts its pro-angiogenetic effect through VEGF and cPGE. Conclusions: We report that heparin-loaded alginate dressings are not cytotoxic and offer increased angiogenic and anti-bacterial potential. The angiogenesis is apparently taken through the VEGF pathway.
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Affiliation(s)
- Ayesha Nawaz
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
- Department of Biology, Lahore Garrison University, Lahore 54810, Pakistan
| | - Sher Zaman Safi
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
- Faculty of Medicine, Bioscience and Nursing, MAHSA University, Jenjarom 42610, Selangor, Malaysia
- Correspondence:
| | - Shomaila Sikandar
- Department of Biology, Lahore Garrison University, Lahore 54810, Pakistan
| | - Rabia Zeeshan
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
| | - Saima Zulfiqar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
| | - Nadia Mehmood
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
| | - Hussah M. Alobaid
- Department of Zoology, College of Science, King Saud University, Riyadh 11362, Saudi Arabia
| | - Fozia Rehman
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
| | - Muhammad Imran
- Biochemistry Section, Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan
| | - Muhammad Tariq
- Department of Medical Laboratory Technology, University College of Duba, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Abid Ali
- Department of Zoology, Abdul Wali Khan University, Mardan 23200, Pakistan
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
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21
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Mkrtchyan S, Jakubczyk M, Lanka S, Yar M, Mahmood T, Ayub K, Sillanpää M, Thomas. C, Iaroshenko V. Mechanochemical Ni‐catalysed arylation of ortho‐hydroxyarylenaminones: Synthesis of isoflavones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Satenik Mkrtchyan
- Laboratory of Homogeneous Catalysis and Molecular Design at Center of Molecular and Macromolecular Studies, Polish Academy of Sciences. POLAND
| | - Michał Jakubczyk
- Institute of Bioorganic Chemistry Polish Academy of Sciences POLAND
| | | | | | | | | | - Mika Sillanpää
- f. Department of Biological and Chemical Engineering, Aarhus University, Nørrebrogade 44, Aarhus C (Denmark). DENMARK
| | | | - Viktor Iaroshenko
- Laboratory of Homogeneous Catalysis and Molecular Design at Center of Molecular and Macromolecular Studies in Lodz POLAND
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22
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Bibi S, Sarfaraz S, Yar M, Iqbal Zaman M, Niaz A, Khan A, Ali Hashmi M, Ayub K. Structure and electronic characterization of pristine and functionalized single wall carbon nanotube interacting with sulfide ion: A density functional theory approach. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Fayyaz F, Yar M, Gulzar A, Ayub K. First principles calculations of the adsorption of fluorouracil and nitrosourea on CTF-0; organic frameworks as drug delivery systems for cancer treatment. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118941] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Kocak FZ, Yar M, Rehman IU. Hydroxyapatite-Integrated, Heparin- and Glycerol-Functionalized Chitosan-Based Injectable Hydrogels with Improved Mechanical and Proangiogenic Performance. Int J Mol Sci 2022; 23:ijms23105370. [PMID: 35628172 PMCID: PMC9140455 DOI: 10.3390/ijms23105370] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/07/2022] [Accepted: 05/09/2022] [Indexed: 02/04/2023] Open
Abstract
The investigation of natural bioactive injectable composites to induce angiogenesis during bone regeneration has been a part of recent minimally invasive regenerative medicine strategies. Our previous study involved the development of in situ-forming injectable composite hydrogels (Chitosan/Hydroxyapatite/Heparin) for bone regeneration. These hydrogels offered facile rheology, injectability, and gelation at 37 °C, as well as promising pro-angiogenic abilities. In the current study, these hydrogels were modified using glycerol as an additive and a pre-sterile production strategy to enhance their mechanical strength. These modifications allowed a further pH increment during neutralisation with maintained solution homogeneity. The synergetic effect of the pH increment and further hydrogen bonding due to the added glycerol improved the strength of the hydrogels substantially. SEM analyses showed highly cross-linked hydrogels (from high-pH solutions) with a hierarchical interlocking pore morphology. Hydrogel solutions showed more elastic flow properties and incipient gelation times decreased to just 2 to 3 min at 37 °C. Toluidine blue assay and SEM analyses showed that heparin formed a coating at the top layer of the hydrogels which contributed anionic bioactive surface features. The chick chorioallantoic membrane (CAM) assay confirmed significant enhancement of angiogenesis with chitosan-matrixed hydrogels comprising hydroxyapatite and small quantities of heparin (33 µg/mL) compared to basic chitosan hydrogels.
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Affiliation(s)
- Fatma Z. Kocak
- Engineering-Architecture Faculty, Metallurgy and Material Engineering, Nevsehir Haci Bektas Veli University, Nevsehir 50300, Turkey;
- Engineering Department, Lancaster University, Lancaster LA1 4YW, UK
| | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan;
| | - Ihtesham U. Rehman
- Engineering-Architecture Faculty, Metallurgy and Material Engineering, Nevsehir Haci Bektas Veli University, Nevsehir 50300, Turkey;
- Correspondence:
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Sarfaraz S, Yar M, Ali Khan A, Ahmad R, Ayub K. DFT investigation of adsorption of nitro-explosives over C2N surface: Highly selective towards trinitro benzene. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118652] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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Rasool F, Hussain A, Ayub K, Tariq M, Mahmood K, Yousuf S, Yar M, Khalid M, Samreen HS, Lateef M, Malik A. Experimental and Theoretical investigations on (E)-3-(4-ethoxyphenyl)-1-(2-(trifluoromethyl)phenyl)prop‑2-en-1-one and (E)-3-(naphthalen-2-yl)-1-(2-(trifluoromethyl) phenyl)prop‑2-en-1-one: DNA binding, Urease inhibition and Promising NLO response. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132194] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Shahzadi L, Jamal A, Hajivand P, Mahmood N, Chaudhry A, Rehman I, Yar M. Synthesis and wound healing performance of new
water‐soluble
chitosan derivatives. J Appl Polym Sci 2022. [DOI: 10.1002/app.51770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lubna Shahzadi
- Interdisciplinary Research Center in Biomedical Materials COMSATS University Islamabad Lahore Campus Pakistan
| | - Arshad Jamal
- Department of Biology University of Hail Hail Saudi Arabia
| | - Pegah Hajivand
- Faculty of Materials Science and Engineering Changzhou University Changzhou Jiangsu China
| | - Nasir Mahmood
- Department of Allied Health Sciences and Chemical Pathology University of Health Sciences Lahore Pakistan
| | - Aqif Chaudhry
- Interdisciplinary Research Center in Biomedical Materials COMSATS University Islamabad Lahore Campus Pakistan
| | | | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials COMSATS University Islamabad Lahore Campus Pakistan
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Waris TS, Shah STA, Mehmood A, Iqbal Z, Zehra M, Chaudhry AA, Rehman IU, Yar M. Design and development of thyroxine/heparin releasing affordable cotton dressings to treat chronic wounds. J Tissue Eng Regen Med 2022; 16:460-471. [PMID: 35246945 DOI: 10.1002/term.3295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 02/06/2022] [Accepted: 02/17/2022] [Indexed: 11/09/2022]
Abstract
This research on a thyroxine/heparin-based cotton wound dressing tests angiogenic and wound healing ability of thyroxine/heparin in a chick chorionic allantoic membrane bioassay and in skin wounds in healthy rats. Commercially available cotton dressings were simply loaded with thyroxine/heparin solutions and coated with wax. Prior to undertaking the animal study, we assessed in vitro release of thyroxine/heparin from coated and uncoated cotton dressings. Both showed more than 85% release of drug over 14 days, though the lesser release was observed in wax-coated thyroxine/heparin dressing as compared to uncoated thyroxine/heparin dressing. Testing of angiogenesis through CAM assay proved good angiogenic potential of heparin and thyroxin, but the thyroxine found more angiogenic than heparin. In animal study, full-thickness skin wounds of 20 mm diameter showed good healing in both heparin and thyroxine-treated groups. But the most striking result was seen in the thyroxine-treated group where thyroxine showed significant difference with heparin-treated group and completely healed the wounds in 23 days. Thus, the study suggest that thyroxine possesses greater angiogenic and wound healing potential than heparin, and the use of thyroxine/heparin-loaded wax-coated cotton dressing could be a cost-effective option for the management of chronic wounds.
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Affiliation(s)
- Tayyba Sher Waris
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | | | - Azra Mehmood
- Centre for Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Zohaib Iqbal
- Centre for Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Mubashra Zehra
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | - Ihtesham Ur Rehman
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan.,Engineering Department, Lancaster University, Lancaster, UK
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
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Gul I, Yar M, Ahmed A, Hashmi MA, Ayub K. Permeability of boron- and nitrogen-doped graphene nanoflakes for protium/deuterium ions. RSC Adv 2022; 12:3883-3891. [PMID: 35425466 PMCID: PMC8981073 DOI: 10.1039/d1ra09398c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 01/08/2022] [Indexed: 11/21/2022] Open
Abstract
Two-dimensional (2D) monolayer nanomaterials are the thinnest possible membranes with interesting selective permeation characteristics. Among two-dimensional materials, graphenes and hexagonal boron nitride (h-BN) are the most promising membrane materials, which can even allow the separation of proton isotopes. The current work aims at understanding the higher reported permeability of h-BN by sequential doping of B and N atoms in graphene nanoflakes. The kinetic barriers were calculated with two different models of graphenes; coronene and dodecabenzocoronene via zero-point energy calculations at the transition state for proton permeability. The lower barriers for h-BN are mainly due to boron atoms. The trends of kinetic barriers are B < BN < N-doped graphenes. The permeation selectivity of graphene models increases with doping. Our studies suggest that boron-doped graphene models show an energy barrier of 0.04 eV for the permeation of proton, much lower than that of the model graphene and h-BN sheet, while nitrogen-doped graphenes have a very high energy barrier up to 7.44 eV for permeation. Therefore, boron-doped graphene models are suitable candidates for proton permeation. Moreover, the presence of carbon atoms in the periphery of BN sheets has significant negative effects on the permeation of proton isotopes, an unexplored dimension of the remote neighboring effect in 2-D materials. This study illustrates the need for permeation study through other hetero-2D surfaces, where interesting hidden chemistry is still unexplored. Two-dimensional (2D) monolayer nanomaterials are the thinnest possible membranes with interesting selective permeation characteristics.![]()
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Affiliation(s)
- Iram Gul
- Department of Chemistry, COMSATS University, Abbottabad Campus Abbottabad KPK Pakistan 22060 +92-992-383441 +92-992-383591-6
| | - Muhammad Yar
- Department of Chemistry, COMSATS University, Abbottabad Campus Abbottabad KPK Pakistan 22060 +92-992-383441 +92-992-383591-6
| | - Arsalan Ahmed
- Department of Chemistry, COMSATS University, Abbottabad Campus Abbottabad KPK Pakistan 22060 +92-992-383441 +92-992-383591-6
| | - Muhammad Ali Hashmi
- Department of Chemistry, Division of Science & Technology, University of Education 54770 Lahore Pakistan
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University, Abbottabad Campus Abbottabad KPK Pakistan 22060 +92-992-383441 +92-992-383591-6
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30
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Sarfaraz S, Yar M, Ans M, Gilani MA, Ludwig R, Hashmi MA, Hussain M, Muhammad S, Ayub K. Computational investigation of a covalent triazine framework (CTF-0) as an efficient electrochemical sensor. RSC Adv 2022; 12:3909-3923. [PMID: 35425404 PMCID: PMC8981076 DOI: 10.1039/d1ra08738j] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/15/2022] [Indexed: 12/12/2022] Open
Abstract
In the current study, a covalent triazine framework (CTF-0) was evaluated as an electrochemical sensor against industrial pollutants i.e., O3, NO, SO2, SO3, and CO2. The deep understanding of analytes@CTF-0 complexation was acquired by interaction energy, NCI, QTAIM, SAPT0, EDD, NBO and FMO analyses. The outcome of interaction energy analyses clearly indicates that all the analytes are physiosorbed onto the CTF-0 surface. NCI and QTAIM analysis were employed to understand the nature of the non-covalent interactions. Furthermore, SAPT0 analysis revealed that dispersion has the highest contribution towards total SAPT0 energy. In NBO analysis, the highest charge transfer is obtained in the case of SO3@CTF-0 (−0.167 e−) whereas the lowest charge transfer is observed in CO2@CTF-0. The results of NBO charge transfer are also verified through EDD analysis. FMO analysis revealed that the highest reduction in the HOMO–LUMO energy gap is observed in the case of O3 (5.03 eV) adsorption onto the CTF-0 surface, which indicates the sensitivity of CTF-0 for O3 analytes. We strongly believe that these results might be productive for experimentalists to tailor a highly sensitive electrochemical sensor using covalent triazine-based frameworks (CTFs). In the current study, a covalent triazine framework (CTF-0) was evaluated as an electrochemical sensor against industrial pollutants i.e., O3, NO, SO2, SO3, and CO2.![]()
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Affiliation(s)
- Sehrish Sarfaraz
- Department of Chemistry, COMSATS University, Abbottabad Campus, KPK, Pakistan, 22060
| | - Muhammad Yar
- Department of Chemistry, COMSATS University, Abbottabad Campus, KPK, Pakistan, 22060
| | - Muhammad Ans
- Department of Chemistry, University of Agriculture Faisalabad, 38000, Faisalabad, Pakistan
| | - Mazhar Amjad Gilani
- Department of Chemistry, COMSATS University Islamabad, Lahore Campus, 54600, Pakistan
| | - Ralf Ludwig
- Universität Rostock, Institut für Chemie, Abteilung für Physikalische Chemie, Dr.-Lorenz-Weg 1, 18059 Rostock, Germany
- Leibniz-Institut für Katalyse an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Muhammad Ali Hashmi
- Department of Chemistry, Division of Science & Technology, University of Education, 54770 Lahore, Pakistan
| | - Masroor Hussain
- Department of Data Science, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, KPK, Pakistan
| | - Shabbir Muhammad
- Department of Chemistry, College of Science, King Khalid University, P. O. Box 9004, Abha, 61413, Saudi Arabia
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University, Abbottabad Campus, KPK, Pakistan, 22060
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31
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Aleem AR, Shahzadi L, Nasir M, Hajivand P, Alvi F, Akhtar A, Zehra M, Mehmood A, Yar M. Developing sulfur-doped titanium oxide nanoparticles loaded chitosan/cellulose-based proangiogenic dressings for chronic ulcer and burn wounds healing. J Biomed Mater Res B Appl Biomater 2021; 110:1069-1081. [PMID: 34843162 DOI: 10.1002/jbm.b.34981] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 09/01/2021] [Accepted: 09/22/2021] [Indexed: 12/20/2022]
Abstract
Development of biomaterials supporting angiogenesis are highly desired in medical applications. In current work, chitosan and cellulose were cross-linked by using triethyl orthoformate and loaded with sulfur-doped titanium oxide nanoparticles. A readily available and inexpensive titanium oxide was added as a potential proangiogenic agent based on our group findings and other reports on metal oxide nanoparticles activity to stimulate angiogenesis. A simple freeze gelation method led to the development of flexible, foldable, and porous membranes. To investigate the chemical characteristics of the synthesized membranes, Fourier-transform infrared spectroscopy was used. Scanning electron microscopy equipped with energy-dispersive X-ray microanalysis was employed for surface morphological investigations. The cross-linked membranes showed higher degree of swelling capacity compared to the same material with titania-loaded nanoparticles in vitro. The synthesized materials showed higher degree of degradation in H2 O2 as compared to phosphate-buffered saline and lysozyme. Chorioallantoic membrane assay was done to investigate the angiogenic potential. Titanium oxide nanoparticles loaded membranes (CLHTS-5 wt%) exhibited the best degree of angiogenesis in comparison to the other tested materials. In CLHTS-5 wt% experimental group, a good level of attachment and ingrowth of several blood vessels was observed. Interestingly, the same tested group (CLHTS-5 wt%) had shown the increasing trend of cellular metabolic rate of the seeded cells from Day 0 to Day 7 in vitro. These findings were further confirmed by the decline in lactate dehydrogenase enzyme release which was monitored until 72 h, indicating the promising ability of this biomaterial in wound healing applications.
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Affiliation(s)
- Abdur R Aleem
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan.,Department of Physics, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan.,Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, Qingdao University, Qingdao, China
| | - Lubna Shahzadi
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Muhammad Nasir
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Pegah Hajivand
- Faculty of Materials Science and Engineering, Changzhou University, Changzhou, Jiangsu, China
| | - Farah Alvi
- Department of Physics, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Amna Akhtar
- Department of Chemical Engineering, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Mubashra Zehra
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan.,National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Azra Mehmood
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
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32
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Zubairi W, Zehra M, Mehmood A, Iqbal F, Badar R, Hasan A, Yar M. Evaluation of angiogenic potential of heparin and thyroxine releasing wound dressings. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1960335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Waliya Zubairi
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
- Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Mubashra Zehra
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Azra Mehmood
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Farasat Iqbal
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Rida Badar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha, Qatar
- Biomedical Research Center, Qatar University, Doha, Qatar
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
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33
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Dikici S, Yar M, Bullock AJ, Shepherd J, Roman S, MacNeil S. Developing Wound Dressings Using 2-deoxy- D-Ribose to Induce Angiogenesis as a Backdoor Route for Stimulating the Production of Vascular Endothelial Growth Factor. Int J Mol Sci 2021; 22:ijms222111437. [PMID: 34768868 PMCID: PMC8583821 DOI: 10.3390/ijms222111437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 12/13/2022] Open
Abstract
2-deoxy-D-Ribose (2dDR) was first identified in 1930 in the structure of DNA and discovered as a degradation product of it later when the enzyme thymidine phosphorylase breaks down thymidine into thymine. In 2017, our research group explored the development of wound dressings based on the delivery of this sugar to induce angiogenesis in chronic wounds. In this review, we will survey the small volume of conflicting literature on this and related sugars, some of which are reported to be anti-angiogenic. We review the evidence of 2dDR having the ability to stimulate a range of pro-angiogenic activities in vitro and in a chick pro-angiogenic bioassay and to stimulate new blood vessel formation and wound healing in normal and diabetic rat models. The biological actions of 2dDR were found to be 80 to 100% as effective as VEGF in addition to upregulating the production of VEGF. We then demonstrated the uptake and delivery of the sugar from a range of experimental and commercial dressings. In conclusion, its pro-angiogenic properties combined with its improved stability on storage compared to VEGF, its low cost, and ease of incorporation into a range of established wound dressings make 2dDR an attractive alternative to VEGF for wound dressing development.
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Affiliation(s)
- Serkan Dikici
- Department of Bioengineering, Izmir Institute of Technology, 35430 Izmir, Turkey
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK; (A.J.B.); (S.R.)
- Correspondence: (S.D.); (S.M.)
| | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan;
| | - Anthony J. Bullock
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK; (A.J.B.); (S.R.)
| | - Joanna Shepherd
- School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, UK;
| | - Sabiniano Roman
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK; (A.J.B.); (S.R.)
| | - Sheila MacNeil
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK; (A.J.B.); (S.R.)
- Correspondence: (S.D.); (S.M.)
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Mkrtchyan S, Jakubczyk M, Lanka S, Yar M, Ayub K, Shkoor M, Pittelkow M, Iaroshenko VO. Mechanochemical Transformation of CF
3
Group: Synthesis of Amides and Schiff Bases. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Satenik Mkrtchyan
- Laboratory of Homogeneous Catalysis and Molecular Design at the Center of Molecular and Macromolecular Studies Polish Academy of Sciences Sienkiewicza 112 PL-90-363 Łodź Poland
| | - Michał Jakubczyk
- Laboratory of Homogeneous Catalysis and Molecular Design at the Center of Molecular and Macromolecular Studies Polish Academy of Sciences Sienkiewicza 112 PL-90-363 Łodź Poland
- Institute of Bioorganic Chemistry Polish Academy of Sciences Noskowskiego 12/14 61-704 Poznań Poland
| | - Suneel Lanka
- Laboratory of Homogeneous Catalysis and Molecular Design at the Center of Molecular and Macromolecular Studies Polish Academy of Sciences Sienkiewicza 112 PL-90-363 Łodź Poland
- Lodz University of Technology Żeromskiego str. 116 90-924 Lodz Poland
| | - Muhammad Yar
- COMSATS University Department of Chemistry Abbottabad Campus Abbottabad, KPK 22060 Pakistan
| | - Khurshid Ayub
- COMSATS University Department of Chemistry Abbottabad Campus Abbottabad, KPK 22060 Pakistan
| | - Mohanad Shkoor
- Department of Chemistry and Earth Sciences Qatar University P.O. Box 2713 Doha Qatar
| | - Michael Pittelkow
- University of Copenhagen Department of Chemistry Universitetsparken 5 2100 Copenhagen Denmark
| | - Viktor O. Iaroshenko
- Laboratory of Homogeneous Catalysis and Molecular Design at the Center of Molecular and Macromolecular Studies Polish Academy of Sciences Sienkiewicza 112 PL-90-363 Łodź Poland
- Department of Chemistry University of Helsinki A.I. Virtasen aukio 1 00014 Helsinki Finland
- Department of Chemistry, Faculty of Natural Sciences Matej Bel University Tajovkého 40 97401 Banska Bystrica Slovakia
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35
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Abid MA, Hussain S, Intisar A, Rizwan M, Ain Q, Mutahir Z, Yar M, Aamir A, Qureshi AK, Jamil M. Synthesis, characterization, hydrolytic degradation, mathematical modeling and antibacterial activity of poly[bis((methoxyethoxy)ethoxy)phosphazene] (MEEP). Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03625-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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36
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Tariq M, Khan R, Hussain A, Batool A, Rasool F, Yar M, Ayub K, Sirajuddin M, Ullah F, Ali S, Akhtar A, Kausar S, Altaf AA. Synthesis, characterization, antimicrobial, cytotoxic, DNA-interaction, molecular docking and DFT studies of novel di- and tri-organotin(IV) carboxylates using 3-(3-nitrophenyl)2-methylpropenoic acid. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1964019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Muhammad Tariq
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Rabbia Khan
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Ajaz Hussain
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Atia Batool
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Faiz Rasool
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Yar
- Department of Chemistry, COMSATS University Abbottabad, Pakistan
| | - Kurshid Ayub
- Department of Chemistry, COMSATS University Abbottabad, Pakistan
| | - Muhammad Sirajuddin
- Department of Chemistry, University of Science and Technology, Bannu, Pakistan
| | - Faizan Ullah
- Department of Botany, University of Science and Technology Bannu Pakistan
| | - Saqib Ali
- Department of Chemistry, Quaid-e-Azam University, Islamabad, Pakistan
| | - Arusa Akhtar
- Department of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat, Pakistan
| | - Samia Kausar
- Department of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat, Pakistan
| | - Ataf Ali Altaf
- Department of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat, Pakistan
- Department of Chemistry, University of Okara, Okara, Pakistan
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37
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Rasool F, Khalid M, Yar M, Ayub K, Tariq M, Hussain A, Lateef M, Kashif M, Iqbal S. Facile synthesis, DNA binding, Urease inhibition, anti-oxidant, molecular docking and DFT studies of 3-(3-Bromo-phenyl)-1-(2-trifluoromethyl-phenyl)-propenone and 3-(3-Bromo-5 chloro-phenyl)-1-(2-trifluoromethyl-phenyl)-propenone. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116302] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Chaughtai Z, Hashmi MA, Yar M, Ayub K. Electronic structure of polypyrrole composited with a low percentage of graphene nanofiller. Phys Chem Chem Phys 2021; 23:8557-8570. [PMID: 33876018 DOI: 10.1039/d0cp03258a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The low concentration of graphene (<5%) in graphene/polypyrrole composites makes it quite challenging to devise a theoretical model for these composites. Thus, herein, we present theoretical calculations to determine the geometric electronic and optical properties of graphene/polypyrrole composites. Ribbon and sheet models of various sizes were considered for graphene. Oligopyrrole of various lengths was deposited in the graphene model in different orientations including π-stacking, tilted and vertical orientations. Theoretical calculations at the M062X/def2-SVP level revealed that π-stacking is the preferred orientation. To model a lower concentration of graphene, sandwich complexes of oligopyrrole were considered with graphene nanoribbons. Interaction energies revealed that sandwich complexes possessed superior additivity. The NCI analysis established that weak van der Waals interactions existed in all composites. Moreover, the HOMO-LUMO gap decreases as the concentration of graphene increases. Thus, the computed optical band gap of the C58H24-based composite is about 1.7 eV, which is consistent with the reported experimental value (2.1-1.81 eV). The computed band gap further decreases to ∼1.6 eV when the proportion of graphene increases to C64H26. Thus, our results for the graphene nanoribbon-based polypyrrole composites are in good agreement with experimental results. The UV/visible spectra revealed that as the concentration of graphene increases, a red shift is observed for all the configurations, which is consistent with experimental results.
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Affiliation(s)
- Zulqarnain Chaughtai
- Department of Chemistry, COMSATS University, Abbottabad Campus, KPK, 22060, Pakistan.
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Akhtar A, Andleeb A, Waris TS, Bazzar M, Moradi AR, Awan NR, Yar M. Neurodegenerative diseases and effective drug delivery: A review of challenges and novel therapeutics. J Control Release 2020; 330:1152-1167. [PMID: 33197487 DOI: 10.1016/j.jconrel.2020.11.021] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 11/11/2020] [Accepted: 11/11/2020] [Indexed: 12/17/2022]
Abstract
The central nervous system (CNS) encompasses the brain and spinal cord and is considered the processing center and the most vital part of human body. The central nervous system (CNS) barriers are crucial interfaces between the CNS and the periphery. Among all these biological barriers, the blood-brain barrier (BBB) strongly impede hurdle for drug transport to brain. It is a semi-permeable diffusion barrier against the noxious chemicals and harmful substances present in the blood stream and regulates the nutrients delivery to the brain for its proper functioning. Neurological diseases owing to the existence of the BBB and the blood-spinal cord barrier have been terrible and threatening challenges all over the world and can rarely be directly mediated. In fact, drug delivery to brain remained a challenge in the treatment of neurodegenerative (ND) disorders, for these different approaches have been proposed. Nano-fabricated smart drug delivery systems and implantable drug loaded biomaterials for brain repair are among some of these latest approaches. In current review, modern approaches developed to deal with the challenges associated with transporting drugs to the CNS are included. Recent studies on neural drug discovery and injectable hydrogels provide a potential new treatment option for neurological disorders. Moreover, induced pluripotent stem cells used to model ND diseases are discussed to evaluate drug efficacy. These protocols and recent developments will enable discovery of more effective drug delivery systems for brain.
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Affiliation(s)
- Amna Akhtar
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan; Department of Chemical Engineering, COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
| | - Anisa Andleeb
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
| | - Tayyba Sher Waris
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
| | - Masoomeh Bazzar
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom
| | - Ali-Reza Moradi
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran; School of Nano Science, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran 19395, Iran
| | - Nasir Raza Awan
- Department of Neurosciences, Sharif Medical and Dental College, Lahore, Pakistan; Spinacure, 63-A Block E1, Gulberg III, Lahore, Pakistan
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan.
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Farooqi BA, Yar M, Ashraf A, Farooq U, Ayub K. Polyaniline emeraldine salt as selective electrochemical sensor for HBr over HCl: a systematic density functional theory study through oligomer approach. J Mol Model 2020; 26:332. [DOI: 10.1007/s00894-020-04590-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 10/26/2020] [Indexed: 10/23/2022]
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Shahzadi L, Bashir M, Tehseen S, Zehra M, Mehmood A, Chaudhry AA, Rehman IU, Yar M. Thyroxine impregnated chitosan-based dressings stimulate angiogenesis and support fast wounds healing in rats: Potential clinical candidates. Int J Biol Macromol 2020; 160:296-306. [DOI: 10.1016/j.ijbiomac.2020.05.127] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 05/14/2020] [Accepted: 05/16/2020] [Indexed: 10/24/2022]
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Farooqi BA, Yar M, Ashraf A, Farooq U, Ayub K. Graphene-polyaniline composite as superior electrochemical sensor for detection of cyano explosives. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109981] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Bari A, Khan ZA, Shahzad SA, Raza Naqvi SA, Khan SA, Amjad H, Iqbal A, Yar M. Design and syntheses of 7-nitro-2-aryl-4 H-benzo[ d][1,3]oxazin-4-ones as potent anticancer and antioxidant agents. J Mol Struct 2020; 1214:128252. [PMID: 32292211 PMCID: PMC7153534 DOI: 10.1016/j.molstruc.2020.128252] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/10/2020] [Accepted: 04/11/2020] [Indexed: 12/19/2022]
Abstract
A group of new nitro substituted benzoxazinones (3a-k) were synthesized from easily available 4-nitroanthranilic acid. All the synthesized compounds were characterized by FT-IR, 1H NMR, 13C NMR, mass spectrometry and elemental analysis. Anti-proliferative and pro-apoptotic potential of all the synthesized compounds (3a-k) was evaluated by MTT and Hoechst 33258 staining assay respectively whereas their antioxidant properties were determined via DPPH free radical scavenging assay. The most active compounds (3a, 3c and 3k) showed significant cytotoxic potential against HeLa cells with an inhibition of cell viability that ranged between 28.54 and 44.67% (P < 0.001). Albeit statistically different, the anti-proliferative effect of 3c was in close match with that of the reference drug doxorubicin. Likewise, the test compounds showed profound pro-apoptotic potential with an apoptotic index that ranged between 52.86 and 75.61%. Besides, the docking studies revealed a higher efficiency for compounds (3a and 3h) owing to their better affinity and inhibition constant (Ki = 4.397 and 3.713 nmol) respectively. The antioxidant potential of synthesized benzoxazinones (3a-k) was in close agreement with the experimental anticancer results with a percent inhibition from 34.45 to 85.93% as compared to standard (90.56%).
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Affiliation(s)
- Ayesha Bari
- Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan
| | - Zulfiqar Ali Khan
- Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan
- Corresponding author. Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan.
| | - Sohail Anjum Shahzad
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan
- Corresponding author. Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan.
| | - Syed Ali Raza Naqvi
- Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan
| | - Shakeel Ahmad Khan
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, China
| | - Hira Amjad
- Department of Chemistry, Government College University, Lahore, 54000, Pakistan
| | - Ahsan Iqbal
- Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan
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Zehra M, Mehmood A, Yar M, Shahzadi L, Riazuddin S. Development of NSAID-loaded nano-composite scaffolds for skin tissue engineering applications. J Biomed Mater Res B Appl Biomater 2020; 108:3064-3075. [PMID: 32619310 DOI: 10.1002/jbm.b.34634] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 04/10/2020] [Accepted: 04/29/2020] [Indexed: 12/12/2022]
Abstract
Scar free healing together with pain management is one of the major considerations in full thickness wound healing. Extensive wounds take longer to heal without any clinical intervention and, hence, need natural or artificial extracellular matrix support for quick skin regeneration. To address these issues, medicated 3D porous biomimetic scaffolds were developed with a unique combination of biopolymers, that is, chitosan, sodium alginate, and elastin, supplemented with a non-steroidal anti-inflammatory drug (NSAID). Scaffolds were physically characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), swelling ratio analysis, and degradation studies. Findings of the performed analyses proved that these skin substitutes suitable for skin tissue engineering applications attributable to their nano-microporous structures (pore size in range of 0.085-256 μm) allowing cell infiltration and high-water absorption capacity for management of wound exudates. Optimal dose of the loaded ibuprofen was estimated by evaluating effect of variable concentrations of ibuprofen (control, ILM-10, ILM-15, and ILM-20) on adipose tissue-derived mesenchymal stem cells (ASCs) proliferation rate. Out of all experimental groups, ILM-20 constructs were found to accelerate the proliferation rate of seeded ASCs confirming their non-cytotoxic characteristics as well potential to be used for translational scaffold-based therapies.
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Affiliation(s)
- Mubashra Zehra
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan.,Wake Forest Institute of Regenerative Medicine, Winston-Salem, North Carolina, USA
| | - Azra Mehmood
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Lubna Shahzadi
- Interdisciplinary Research Center in Biomedical Materials, COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Sheikh Riazuddin
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan.,Jinnah Burn and Reconstructive Surgery Centre, Lahore, Pakistan
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Dikici S, Bullock AJ, Yar M, Claeyssens F, MacNeil S. 2-deoxy-d-ribose (2dDR) upregulates vascular endothelial growth factor (VEGF) and stimulates angiogenesis. Microvasc Res 2020; 131:104035. [PMID: 32593538 DOI: 10.1016/j.mvr.2020.104035] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Delayed neovascularisation of tissue-engineered (TE) complex constructs is a major challenge that causes their failure post-implantation. Although significant progress has been made in the field of angiogenesis, ensuring rapid neovascularisation still remains a challenge. The use of pro-angiogenic agents is an effective approach to promote angiogenesis, and vascular endothelial growth factor (VEGF) has been widely studied both at the biological and molecular levels and is recognised as a key stimulator of angiogenesis. However, the exogenous use of VEGF in an uncontrolled manner has been shown to result in leaky, permeable and haemorrhagic vessels. Thus, researchers have been actively seeking alternative agents to upregulate VEGF production rather than exogenous use of VEGF in TE systems. We have previously revealed the potential of 2-deoxy-d-ribose (2dDR) as an alternative pro-angiogenic agent to induce angiogenesis and accelerates wound healing. However, to date, there is not any clear evidence on whether 2dDR influences the angiogenic cascade that involves VEGF. METHODS In this study, we explored the angiogenic properties of 2dDR either by its direct application to human aortic endothelial cells (HAECs) or when released from commercially available alginate dressings and demonstrated that when 2dDR promotes angiogenesis, it also increases the VEGF production of HAECs. RESULTS The VEGF quantification results suggested that VEGF production by HAECs was increased with 2dDR treatment but not with other sugars, including 2-deoxy-l-ribose (2dLR) and d-glucose (DG). The stability studies demonstrated that approximately 40-50% of the 2dDR had disappeared in the media over 14 days, either in the presence or absence of HAECs, and the reduction was higher when cells were present. The concentration of VEGF in the media also fell after day 4 associated with the reduction in 2dDR. CONCLUSION This study suggests that 2dDR (but not other sugars tested in this study) stimulates angiogenesis by increasing the production of VEGF. We conclude 2dDR appears to be a practical and effective indirect route to upregulating VEGF for several days, leading to increased angiogenesis.
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Affiliation(s)
- Serkan Dikici
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield, UK
| | - Anthony J Bullock
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield, UK
| | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
| | - Frederik Claeyssens
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield, UK
| | - Sheila MacNeil
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield, UK.
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Andleeb A, Dikici S, Waris TS, Bashir MM, Akhter S, Chaudhry AA, MacNeil S, Yar M. Developing affordable and accessible pro-angiogenic wound dressings; incorporation of 2 deoxy D-ribose (2dDR) into cotton fibres and wax-coated cotton fibres. J Tissue Eng Regen Med 2020; 14:973-988. [PMID: 32473079 DOI: 10.1002/term.3072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/13/2020] [Accepted: 05/28/2020] [Indexed: 12/13/2022]
Abstract
The absorption capacity of cotton dressings is a critical factor in their widespread use where they help absorb wound exudate. Cotton wax dressings, in contrast, are used for wounds where care is taken to avoid adhesion of dressings to sensitive wounds such as burn injuries. Accordingly, we explored the loading of 2-deoxy-D-ribose (2dDR), a small sugar, which stimulates angiogenesis and wound healing in normal and diabetic rats, into both types of dressings and measured the release of it over several days. The results showed that approximately 90% of 2dDR was released between 3 and 5 days when loaded into cotton dressings. For wax-coated cotton dressings, several methods of loading of 2dDR were explored. A strategy similar to the commercial wax coating methodology was found the best protocol which provided a sustained release over 5 days. Cytotoxicity analysis of 2dDR loaded cotton dressing showed that the dressing stimulated metabolic activity of fibroblasts over 7 days confirming the non-toxic nature of this sugar-loaded dressings. The results of the chick chorioallantoic membrane (CAM) assay demonstrated a strong angiogenic response to both 2dDR loaded cotton dressing and to 2dDR loaded cotton wax dressings. Both dressings were found to increase the number of newly formed blood vessels significantly when observed macroscopically and histologically. We conclude this study offers a simple approach to developing affordable wound dressings as both have the potential to be evaluated as pro-active dressings to stimulate wound healing in wounds where management of exudate or prevention of adherence to the wounds are clinical requirements.
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Affiliation(s)
- Anisa Andleeb
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Serkan Dikici
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield, UK
| | - Tayyaba Sher Waris
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Muhammad Mustehsan Bashir
- Department of Plastic, Reconstructive surgery and Burn Unit, King Edward Medical University Lahore, Pakistan
| | - Shahid Akhter
- Cotton Craft Pvt Ltd Plot 407, 408 Sunder Industrial Estate, Lahore, Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Sheila MacNeil
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield, UK
| | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
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Affiliation(s)
- Ayesha Bari
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Ahsan Iqbal
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Zulfiqar Ali Khan
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Sohail Anjum Shahzad
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
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Zehra M, Zubairi W, Hasan A, Butt H, Ramzan A, Azam M, Mehmood A, Falahati M, Chaudhry AA, Rehman IU, Yar M. Oxygen Generating Polymeric Nano Fibers That Stimulate Angiogenesis and Show Efficient Wound Healing in a Diabetic Wound Model. Int J Nanomedicine 2020; 15:3511-3522. [PMID: 32547010 PMCID: PMC7244241 DOI: 10.2147/ijn.s248911] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 04/29/2020] [Indexed: 12/13/2022] Open
Abstract
Introduction Diabetic wounds are challenging to treat due to a wide range of pathophysiological changes. Hypoxia is one of the predominant contributing factors of poor vascularization and chronicity in diabetic wounds. This study was designed to develop polycaprolactone (PCL)-based oxygen-releasing electrospun wound dressings and evaluate their efficacy for improved full thickness wound healing in diabetic rats. Methods PCL-based oxygen releasing wound dressings were made using electrospinning technology. The developed dressings were characterized in terms of physical as well as biological properties both in vitro and in vivo. E-spun nanofibrous dressings were physically characterized with scanning electron microscopy, Fourier-transform infrared spectroscopy, and Energy-dispersive X-ray spectroscopy. To study the likely impact of the fabricated wound dressings in hypoxic conditions, HIF-1α expression analysis was carried out both at gene and protein levels. Wound dressings were further evaluated for their healing potential for extensive wounds in diabetic rat models. Results The experimental results showed that the developed dressings were capable of continuously generating oxygen for up to 10 days. Cell studies further confirmed pronounced expression of HIF-1α at gene and protein levels in cells seeded on PCL-sodium percarbonate (SPC) and PCL scaffolds compared with the cells cultured on a tissue culture plate. Chorioallantoic membrane assay revealed the supportive role of oxygen releasing dressings on angiogenesis compared to the control group. Histological assessment of the regenerated skin tissues proved that full thickness wounds covered with SPC loaded PCL dressings had a comparatively better vascularized and compact extracellular matrix with completely covered thick epithelium. Discussion The developed oxygen generating polymeric nanofibrous wound dressings could potentially be used as an envisioned approach for the efficient recovery of chronic diabetic wounds.
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Affiliation(s)
- Mubashra Zehra
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore 53700, Pakistan
| | - Waliya Zubairi
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha 2713, Qatar.,Biomedical Research Center, Qatar University, Doha 2713, Qatar
| | - Hira Butt
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore 53700, Pakistan
| | - Amna Ramzan
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore 53700, Pakistan
| | - Maryam Azam
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Azra Mehmood
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore 53700, Pakistan
| | - Mojtaba Falahati
- Department of Nanotechnology, Faculty of Advanced Sciences and Technology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Ihtesham Ur Rehman
- Engineering Department, Faculty of Science and Technology, Lancaster University, Lancaster LA1 4YW, UK
| | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
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Shahzad SA, Sarfraz A, Yar M, Khan ZA, Naqvi SAR, Naz S, Khan NA, Farooq U, Batool R, Ali M. Synthesis, evaluation of thymidine phosphorylase and angiogenic inhibitory potential of ciprofloxacin analogues: Repositioning of ciprofloxacin from antibiotic to future anticancer drugs. Bioorg Chem 2020; 100:103876. [PMID: 32388426 DOI: 10.1016/j.bioorg.2020.103876] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/07/2020] [Accepted: 04/21/2020] [Indexed: 02/07/2023]
Abstract
Over expression of thymidine phosphorylase (TP) in various human tumors compared to normal healthy tissue is associated with progression of cancer and proliferation. The 2-deoxy-d-ribose is the final product of thymidine phosphorylase (TP) catalyzed reaction. Both TP and 2-deoxy-d-ribose are known to promote unwanted angiogenesis in cancerous cells. Discovery of potent inhibitors of thymidine phosphorylase (TP) can offer appropriate approach in cancer treatment. A series of ciprofloxacin 2, 3a-3c, 4a-4d, 5a-5b, 6 and 7 has been synthesized and characterized using spectroscopic techniques. Afterwards, inhibitory potential of synthesized ciprofloxacin 2, 3a-3c, 4a-4d, 5a-5b, 6 and 7 against thymidine phosphorylase enzyme was assessed. Out of these twelve analogs of ciprofloxacin nine analogues 3a-3c, 4a-4c, 5a-5b and 6 showed good inhibitory activity against thymidine phosphorylase. Inhibitory activity as presented by their IC50 values was found in the range of 39.71 ± 1.13 to 161.89 ± 0.95 μM. The 7-deazaxanthine was used as a standard inhibitor with IC50 = 37.82 ± 0.93 μM. Furthermore, the chick chorionic allantoic membrane (CAM) assay was used to investigate anti-angiogenic activity of the most active ciprofloxacin-based inhibitor 3b. To enlighten the important binding interactions of ciprofloxacin derivatives with target enzyme, the structure activity relationship and molecular docking studies of chosen ciprofloxacin analogues was discussed. Docking studies revealed key π-π stacking, π-cation and hydrogen bonding interactions of ciprofloxacin analogues with active site residues of thymidine phosphorylase enzyme.
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Affiliation(s)
- Sohail Anjum Shahzad
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan.
| | - Ayesha Sarfraz
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan.
| | - Zulfiqar Ali Khan
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Syed Ali Raza Naqvi
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Sadia Naz
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan; Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Nazeer Ahmad Khan
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan.
| | - Razia Batool
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Muhammad Ali
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa 611, Oman
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