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Park SS, Farwa U, Kim HD, Kim YS, Lee BT. Bone formation by Irisin-Poly vinyl alchol modified bioglass ceramic beads in the rabbit model. J Mater Sci Mater Med 2024; 35:23. [PMID: 38526676 DOI: 10.1007/s10856-024-06788-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 03/01/2024] [Indexed: 03/27/2024]
Abstract
In the aging society, slow bone regeneration poses a serious hindrance to the quality of life. To deal with this problem, in this study, we have combined irisin with the bioglass regular beads to enhance the bone regeneration process. For this purpose, highly porous bioglass was obtained as spherical beads by using sodium alginate. The bioglass was evaluated by various analytical techniques such as SEM, EDS, XRD, and pore size distribution. The results depicted that porous bioglass was prepared correctly and SEM analysis showed a highly porous bioglass was formulated. On this bioglass, irisin was loaded with the assistance of polyvinyl alcohol (PVA) in three concentrations (50 ng/ml, 100 ng/ml, and 150 ng/ml per 1 g of bioglass). SEM analysis showed that pores are covered with PVA. The irisin release profile showed a sustained release over the time period of 7 days. In vitro, biocompatibility evaluation by the MC3T3E1 cells showed that prepared bioglass and irisin loaded bioglass (BGI50, BGI100, and BG150) are highly biocompatible. Alizarin Red staining analysis showed that after 2 weeks BGI50 samples showed highest calcium nodule formation. In vivo in the rabbit femur model was conducted for 1 and 2 months. BGI150 samples showed highest BV/TV ratio of 37.1 after 2 months. The histological data showed new bone formation surrounding the beads and with beads loaded with irisin. Immunohistochemistry using markers OPN, RUNX, COL, and ALP supported the osteogenic properties of the irisin-loaded bioglass beads. The results indicated that irisin-loaded bioglass displayed remarkable bone regeneration.
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Affiliation(s)
- Seong-Su Park
- Department of regenerative medicine, College of Medicine, Soonchunhyang University Cheonan, Cheonan, Republic of Korea
| | - Ume Farwa
- Institute of tissue regeneration, Soonchunhyang University Cheonan, Cheonan, Republic of Korea
| | - Hai-Doo Kim
- Institute of tissue regeneration, Soonchunhyang University Cheonan, Cheonan, Republic of Korea
| | - Yong-Sik Kim
- Institute of tissue regeneration, Soonchunhyang University Cheonan, Cheonan, Republic of Korea
- Department of Microbiology, College of Medicine, Soonchunhyang University Cheonan, Cheonan, Republic of Korea
| | - Byong-Taek Lee
- Department of regenerative medicine, College of Medicine, Soonchunhyang University Cheonan, Cheonan, Republic of Korea.
- Institute of tissue regeneration, Soonchunhyang University Cheonan, Cheonan, Republic of Korea.
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Arin A, Rahaman MS, Farwa U, Gwon J, Bae SH, Kim YK, Lee BT. An agarose-based TOCN-ECM bilayer lyophilized-hydrogel with hemostatic and regenerative properties for post-operative adhesion management. Int J Biol Macromol 2024; 262:130094. [PMID: 38350583 DOI: 10.1016/j.ijbiomac.2024.130094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/31/2024] [Accepted: 02/08/2024] [Indexed: 02/15/2024]
Abstract
This study used a unique approach by developing a bilayer system that can simultaneously accomplish non-adhesion, hemostatic, and tissue regenerative properties. In this system, agarose was used as a carrier material, with an agarose-TEMPO-oxidized cellulose nanofiber (TOCN), (AT) layer acting as a non-adhesion layer and an Agarose-Extracellular matrix, (AE) layer acting as a tissue regenerative layer. Thrombin was loaded on the AE layer as an initiator of the healing process, by hemostasis. AT 1:4 showed 79.3 % and AE 1:4 showed 84.66 % cell viability initially confirming the biocompatible nature of the layers. The AE layer showed cell attachment and proliferation on its surface whereas on the AT layer, cells are visible but no attachment was observed. Furthermore, in vivo analysis was conducted. The non-adhesive layer was grafted between the cecum and peritoneal wall which showed that (AT 1:4) displayed remarkable non-adhesion properties as compared to a commercial product and the non-treated group. Hemostasis and tissue regeneration ability were evaluated using rat liver models. The bleeding time of AE 1:4TH was recorded as 160 s and the blood loss was 5.6 g. The results showed that (AE 1:4) displayed effective regeneration ability in the liver model after two weeks.
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Affiliation(s)
- Asuva Arin
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, -31151, Republic of Korea
| | - Md Sohanur Rahaman
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, -31151, Republic of Korea
| | - Ume Farwa
- Institute of Tissue Regeneration, Soonchunhyang University, Cheonan 31151, Republic of Korea
| | - Jaegyoung Gwon
- Division of Environmental Material Engineering, Department of Forest Products, Korea Forest Research Institute, Seoul, South Korea
| | - Sang Ho Bae
- Institute of Tissue Regeneration, Soonchunhyang University, Cheonan 31151, Republic of Korea; Department of Surgery, Soonchunhyang University Cheonan Hospital, Cheonan, South Korea
| | - Yung Kil Kim
- Department of Surgery, Soonchunhyang University Cheonan Hospital, Cheonan, South Korea
| | - Byong-Taek Lee
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, -31151, Republic of Korea; Institute of Tissue Regeneration, Soonchunhyang University, Cheonan 31151, Republic of Korea.
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Park SS, Farwa U, Hossain M, Im S, Lee BT. Evaluation of Gelatin/Hyaluronic Acid-Generated Bridging in a 3D-Printed Titanium Cage for Bone Regeneration. J Funct Biomater 2023; 14:562. [PMID: 38132816 PMCID: PMC10743693 DOI: 10.3390/jfb14120562] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 12/23/2023] Open
Abstract
3D-printed titanium (Ti) cages present an attractive alternative for addressing issues related to osteoporosis-induced fractures, accidental fractures, and spinal fusion surgery due to disc herniation. These Ti-based bone implants possess superior strength compared to other metals, allowing for versatile applications in orthopedic scenarios. However, when used as standalone solutions, certain considerations may arise, such as interaction with soft tissues. Therefore, to overcome these issues, the combination with hydrogel has been considered. In this study, to impart Ti with regenerative abilities a 3D-printed Ti cage was loaded with gelatin and hyaluronic acid (G-H) to improve the cell attachment ability of the Ti-based bone implants. The void spaces within the mesh structure of the 3D Ti cage were filled with G-H, creating a network of micro-sized pores. The filled G-H acted as the bridge for the cells to migrate toward the large inner pores of the 3D Ti cage. Due to the microporous surface and slow release of gelatin and hyaluronic acid, the biocompatibility of the coated Ti cage was increased with an elevation in osteoconduction as depicted by the up-regulation of bone-related gene expressions. The in vivo implantation in the rabbit femur model showed enhanced bone regeneration due to the coated G-H on the Ti cage compared to the pristine hollow Ti cage. The G-H filled the large holes of the 3D Ti cage that acted as a bridge for the cells to travel inside the implant and aided in the fast regeneration of bone.
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Affiliation(s)
- Seong-Su Park
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University Cheonan, Cheonan 31151, Republic of Korea;
| | - Ume Farwa
- Institute of Tissue Regeneration, Soonchunhyang University Cheonan, Cheonan 31151, Republic of Korea; (U.F.); (S.I.)
| | - Mosharraf Hossain
- Department of Neurosurgery, Soonchunhyang University, Bucheon Hospital, Bucheon 14584, Republic of Korea;
| | - Soobin Im
- Institute of Tissue Regeneration, Soonchunhyang University Cheonan, Cheonan 31151, Republic of Korea; (U.F.); (S.I.)
- Department of Neurosurgery, Soonchunhyang University, Bucheon Hospital, Bucheon 14584, Republic of Korea;
| | - Byong-Taek Lee
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University Cheonan, Cheonan 31151, Republic of Korea;
- Institute of Tissue Regeneration, Soonchunhyang University Cheonan, Cheonan 31151, Republic of Korea; (U.F.); (S.I.)
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Farwa U, Lee HY, Lim H, Park I, Park S, Moon BG, Lee BT. Poly(l-lactide)/polycaprolactone based multifunctional coating to deliver paclitaxel/VEGF and control the degradation rate of magnesium alloy stent. Int J Biol Macromol 2023; 250:126218. [PMID: 37572804 DOI: 10.1016/j.ijbiomac.2023.126218] [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: 04/26/2023] [Revised: 06/26/2023] [Accepted: 08/05/2023] [Indexed: 08/14/2023]
Abstract
Despite significant advancements made in cardiovascular stents, restenosis, thrombosis, biocompatibility, and clinical complications remain a matter of concern. Herein, we report a biodegradable Mg alloy stent with a dual effect of the drug (Paclitaxel) and growth factor (VEGF) release. To mitigate the fast degradation of Mg alloy, inorganic and organic coatings were formed on the alloy surface. The optimized hierarchal sequence of the coating was the first layer consisting of magnesium fluoride, followed by poly(l-lactide) and hydroxyapatite coating, and finally sealed by a polycaprolactone layer (MgC). PLLA and HAp were used to increase the adhesion strength and biocompatibility of the coating. Paclitaxel and VEGF were loaded in the final PCL layer (Mg-C/PTX-VEGF). As compared to bare Mg alloy (28 % weight loss), our MgC system showed (3.1 % weight loss) successful decrease in the degradation rate. Further, the in vitro biocompatibility illustrated the highly biocompatible nature of our drug and growth factor-loaded system. The in vivo results displayed that the drug loading decreased the inflammation and neointimal hyperplasia as indicated by the α-SMA and CD-68 antibody staining. The growth factor helped in the endothelialization which was established by the FLKI and ICAM antibody staining of the tissue.
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Affiliation(s)
- Ume Farwa
- Institute of Tissue Regeneration, Soonchunhyang University Cheonan, Republic of Korea
| | - Hyun-Yong Lee
- Department of Surgery, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Hansung Lim
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University Cheonan, Republic of Korea
| | - Ihho Park
- Materials Testing & Reliability Division, Korea Institute of Materials Science (KIMS), Changwon, Republic of Korea
| | - Sangho Park
- Cardiology Department, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Byoung-Gi Moon
- Department of Magnesium, Advanced Metals Division, Korea Institute of Material Science (KIMS), Changwon, Republic of Korea
| | - Byong-Taek Lee
- Institute of Tissue Regeneration, Soonchunhyang University Cheonan, Republic of Korea; Department of Regenerative Medicine, College of Medicine, Soonchunhyang University Cheonan, Republic of Korea.
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Ali M, Farwa U, Park SS, Kim YS, Lee BT. Physico-biological and in vivo evaluation of irisin loaded 45S5 porous bioglass granules for bone regeneration. Biomater Adv 2023; 147:213326. [PMID: 36758281 DOI: 10.1016/j.bioadv.2023.213326] [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: 12/02/2022] [Revised: 01/18/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023]
Abstract
In this study, we investigated the physico-biological and in-vivo evaluation of irisin loaded 45S5 bioglass bone graft for enhancing osteoblastic differentiation and bone regeneration in rat femur head defect model. Highly porous structure was obtained in the bioglass by burn-out process with varying the concentration of poly (methyl methacrylate) (PMMA) spheres. 10 % polyvinyl alcohol (PVA) was used as a binder for the sustain releasing of irisin on porous bioglass. Different concentrations of irisin were loaded on the selected bioglass samples and these were further evaluated for the biocompatibility and osteoblastic differentiation properties. The in vitro results demonstrated not only its biocompatibility but also that it stimulated pre-osteoblast differentiation. The in vivo data showed new bone formation as well as expression of osteogenic proteins like alkaline phosphatase (ALP), Runt-related transcription factor 2 (Runx-2), osteopontin (OPN), and collagen-1 (Col-1). Our results support the use of irisin loaded bioglass for the use of early bone regeneration.
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Affiliation(s)
- Maqsood Ali
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, South Korea
| | - Ume Farwa
- Institute of Tissue Regeneration, Soonchunhyang University, Cheonan, South Korea
| | - Seong-Su Park
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, South Korea
| | - Yong-Sik Kim
- Institute of Tissue Regeneration, Soonchunhyang University, Cheonan, South Korea; Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, South Korea
| | - Byong-Taek Lee
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, South Korea; Institute of Tissue Regeneration, Soonchunhyang University, Cheonan, South Korea.
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Ashraf MU, Farwa U, Siddiqa M, Sarfraz A, Azeem N, Sarfraz Z. Has the Landscape of Immunotherapy for Prostate Cancer Changed? A Systematic Review and Post Hoc Analysis. Am J Mens Health 2023; 17:15579883231165140. [PMID: 37002863 PMCID: PMC10069001 DOI: 10.1177/15579883231165140] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
Prostate cancer (PCa) is the second leading cause of cancer-causing death in the United States. As the most common malignancy in men, it is pertinent to explore whether novel immunotherapies may improve the quality of life and overall survival (OS) of patient populations. This systematic review and post hoc analysis curates a patient-by-patient pool of evidence adhering to PRISMA Statement 2020 guidelines. In total, 24 patients were analyzed for treatment history and associated variables including prostate-specific antigen (PSA) levels at diagnosis and post-treatment, Gleason score, secondary tumor locations, success/failure of therapy, and post-immunotherapy outcomes including OS. In total, 10 types of immunotherapies were identified with Pembrolizumab (among 8 patients) followed by IMM-101 (among 6 patients) being the most commonly administered. The mean OS for all patients was 27.8 months (24 patients) with the relatively highest mean OS reported with IMM-101 (56 months) followed by tumor-infiltrating lymphocytes (30 months). This research article provides critical insights into the evolving landscape of immunotherapies being tested for PCa and addresses gaps in oncological research to advance the understanding of PCa.
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Affiliation(s)
| | - Ume Farwa
- University Medical and Dental College, Faisalabad, Pakistan
| | - Maryam Siddiqa
- University Medical and Dental College, Faisalabad, Pakistan
| | | | - Nishwa Azeem
- Schwarzman College, Tsinghua University, Beijing, China
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Van TTT, Makkar P, Farwa U, Lee BT. Development of a novel polycaprolactone based composite membrane for periodontal regeneration using spin coating technique. J Biomater Sci Polym Ed 2022; 33:783-800. [PMID: 34931600 DOI: 10.1080/09205063.2021.2020414] [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] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Guided bone regeneration (GBR) is known to prevent the development of soft tissue on the defect sites as well as support the new bone formation on the other end. In the present study, we developed a multilayer biodegradable membrane for GBR applications. The multilayer membrane is primarily composed of β-tricalcium phosphate (TCP), polycaprolactone (PCL), and hyaluronic acid (HA), prepared by the spin-coating method. The triple layer system has PCL-TCP composite layer on top, a PCL layer in the middle, and PCL-HA as the bottom layer. The characterization of the PCL-TCP/PCL/PCL-HA by various techniques such as SEM, EDS, XRD, and FT-IR supported the uniform formation of the triple layers with an overall thickness of ∼ 72 µm. Multilayer composite membrane showed excellent physical parameters; neutral pH, high hydrophilicity, high swelling rate, low degradation rate, and high apatite formation after immersion in simulated body fluid (SBF) for 14 days. The multilayer membrane also exhibited biocompatibility which is evident by MTT assay and confocal images. The results suggested that the multilayer composite membrane has the potential for GBR applications.
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Affiliation(s)
- Tran Thi Tuong Van
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Preeti Makkar
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Ume Farwa
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Byong-Taek Lee
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea.,Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
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Farwa U, Jung SH, Ryu JY, Pait M, Singh N, Cho S, Lee MH, Lee J. Selective formation of dinuclear and heptanuclear Zn(II), Ni(II), and Co(II) metal clusters from a simple dialdehyde. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115491] [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: 11/24/2022]
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Mehboob MY, Hussain R, Irshad Z, Farwa U, Adnan M, Muhammad S. Designing and Encapsulation of Inorganic Al12N12 Nanoclusters with Be, Mg, and Ca Metals for Efficient Hydrogen Adsorption: A Step Forward Towards Hydrogen Storage Materials. J Comput Biophys Chem 2021. [DOI: 10.1142/s2737416521500411] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Nanoclusters such as [Formula: see text][Formula: see text] have received increased attention due to their diverse applications in the fields of optoelectronics and energy storage. In this paper, we have investigated a series of alkaline earth metal (AEM)-encapsulated [Formula: see text][Formula: see text] nanoclusters for hydrogen adsorption. Thermodynamic adsorption parameters, optical and nonlinear optical properties were investigated using density functional theory (DFT) at the B3LYP/6-31G(d,p) level of theory. Encapsulation of AEMs (Be, Mg and Ca) is an effective strategy to improve the NLO reaction and thermodynamic and adsorption properties of [Formula: see text][Formula: see text] nanoclusters. The adsorption energies ranging from [Formula: see text]26.57[Formula: see text]kJ/mol to [Formula: see text]213.33[Formula: see text]kJ/mol for the three guests (Be, Mg and Ca) capsulated [Formula: see text][Formula: see text] nanoclusters are observed. The adsorption energy is affected by the size of the nanocage. Therefore, Ca- and Mg-encapsulated cages show higher values of adsorption energy. Overall, an increase in adsorption energy ([Formula: see text][Formula: see text]kJ/mol to [Formula: see text]91.06[Formula: see text]kJ/mol) is observed for (Be, Mg and Ca) encapsulated [Formula: see text][Formula: see text] nanoclusters compared to untreated [Formula: see text][Formula: see text] and H2-[Formula: see text][Formula: see text] cages. Moreover, adsorption of hydrogen on AEMs encapsulated in [Formula: see text][Formula: see text] leads to a decrease in the HOMO-LUMO energy gap with an enhancement of linear and nonlinear hyperpolarizability. All hydrogen-adsorbed AEMs [Formula: see text][Formula: see text] nanocages exhibit large [Formula: see text] and [Formula: see text] values, suggesting that these systems are potential candidates for optical materials. Various geometrical parameters such as frontier molecular orbitals (FMOs), partial density of states, global quantum descriptor of reactivity, natural bond orbital testing and molecular electrostatic strength analyses were performed to investigate the thermodynamic stability of all the studied systems. The results obtained confirmed that the designed systems are suitable for hydrogen storage. Therefore, we recommend that these systems be investigated for their hydrogen storage and optical properties.
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Affiliation(s)
| | - Riaz Hussain
- Department of Chemistry, University of Okara, Okara 56300, Pakistan
| | - Zobia Irshad
- Graduate School, Department of Chemistry, Chosun University, 501-759, Republic of Korea
| | - Ume Farwa
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Muhammad Adnan
- Graduate School, Department of Chemistry, Chosun University, 501-759, Republic of Korea
| | - Shabbir Muhammad
- Department of Physics, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
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Farwa U, Pait M, Ryu JY, Byun YM, Lee SG, Jeong SH, Singh O, Singh N, Park HR, Lee J. Multinuclear nickel(II) complexes with chiral schiff base ligand. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119798] [Citation(s) in RCA: 2] [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: 11/17/2022]
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Wi EH, Ryu JY, Lee SG, Farwa U, Pait M, Lee S, Cho S, Lee J. Selective Self-Assembly of a Rectangular Ruthenium Supramolecule from an Unsymmetrical Bridging Unit. Inorg Chem 2019; 58:11493-11499. [DOI: 10.1021/acs.inorgchem.9b01288] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eun Hye Wi
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ji Yeon Ryu
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Seul Gi Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ume Farwa
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Moumita Pait
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sung Cho
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
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Hwang S, Byun YM, Ryu JY, Farwa U, Begum H, Lee J, Lee S, Park HR, Lee J. Potassium coordination polymer complex containing tetrazolyl ligand. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Jahangir M, Farwa U, Mazhar F, Malik A, Ahmad E. Metal II complexes of ethambutol as good enzyme inhibitor and promising antioxidant. Pak J Pharm Sci 2016; 29:1601-1608. [PMID: 27731818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ethambutoldihydrogenchloride (EMB) with chemical formula C10H24N2O2.2HCl is ethane-1,2-diamine in which one hydrogen attached to each of the nitrogen is substituted by a 1-hydroxybutan-2-yl group (S,S-configuration). It is an FDA approved drug and has been used for treatment of tuberculosis since 1960's. Prolong use of EMB has a side effect of visual impairment and in literature it is related with the depletion of Zn metal from the body. As it is a good chelating agent, many metal II complexes have been synthesized with anti-tubercular activity. The purpose of this work was to synthesize metal II complexes of EMB and to evaluate their antioxidant activity along with enzyme inhibition activity (acetylcholine esterase and protease). The metals used for complex formation were Co, Zn, Fe, Cu and Ni. IR spectral data and physical parameters supported the complex formation. The obtained results showed the synthesized complexes as notable antioxidants and enzyme inhibitors.
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Affiliation(s)
| | - Ume Farwa
- Department of Chemistry, GC University, Lahore, Pakistan
| | - Farhana Mazhar
- Department of Chemistry, GC University, Lahore, Pakistan
| | - Afza Malik
- Department of Chemistry, GC University, Lahore, Pakistan
| | - Ejaz Ahmad
- Department of Chemistry, GC University, Lahore, Pakistan
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Amjad A, Mirza IA, Abbasi SA, Farwa U, Malik N, Zia F. Modified Hodge test: A simple and effective test for detection of carbapenemase production. Iran J Microbiol 2011; 3:189-93. [PMID: 22530087 PMCID: PMC3330182] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND AND OBJECTIVES Resistance among bacterial isolates is the leading cause of increased mortality and morbidity worldwide. Carbapenems once thought to be effective are becoming ineffective mostly due to the emergence of carbapenemase. This study was designed to determine in vitro efficacy of Modified Hodge test for detection of carbapenemase production in Gram negative rods. MATERIAL AND METHODS The study was done in the Department of Microbiology, Armed Forces Institute of Pathology Rawalpindi Pakistan from January 2010 to December 2010. A total of 200 Gram negative rods from different clinical samples were taken. Those isolates which showed intermediate or susceptible zones i.e 16mm-21mm on disc diffusion were included in the study. These isolates were then subjected to Modified Hodge test. RESULT Out of 200 isolates, 138 (69%) were positive for carbapenemase production by Modified Hodge test. Out of 138 MHT positive organisms, the frequency of E. coli was 38%, followed by Pseudomonas aeruginosa (30%), Klebsiella pneumoniae (17%), Acinetobacter baumannii (12%), Citrobacter diversus (2%) and Enterobacter agglomerans (1.4%). CONCLUSION Modified Hodge test is a simple test which can be performed in the routine lab for detection of carbapenemases in isolates showing intermediate or sensitive zone diameter on disc diffusion.
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Affiliation(s)
- A Amjad
- Corresponding author: Dr. Alina Amjad Address: Department of Microbiology, Armed Forces Institute of Pathology, Rawalpindi Pakistan. Tel: +333-5191282. E-mail:
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