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Hossain SMC, Zakaria JB, Ferdows M, Bangalee MZI, Alam MS, Zhao G. Computer simulation-based nanothermal field and tissue damage analysis for cardiac tumor ablation. Med Biol Eng Comput 2024; 62:1549-1567. [PMID: 38308669 DOI: 10.1007/s11517-024-03017-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 01/05/2024] [Indexed: 02/05/2024]
Abstract
Radiofrequency ablation is a nominally invasive technique to eradicate cancerous or non-cancerous cells by heating. However, it is still hampered to acquire a successful cell destruction process due to inappropriate RF intensities that will not entirely obliterate tumorous tissues, causing in treatment failure. In this study, we are acquainted with a nanoassisted RF ablation procedure of cardiac tumor to provide better outcomes for long-term survival rate without any recurrences. A three-dimensional thermo-electric energy model is employed to investigate nanothermal field and ablation efficiency into the left atrium tumor. The cell death model is adopted to quantify the degree of tissue injury while injecting the Fe3O4 nanoparticles concentrations up to 20% into the target tissue. The results reveal that when nanothermal field extents as a function of tissue depth (10 mm) from the electrode tip, the increasing thermal rates were approximately 0.54362%, 3.17039%, and 7.27397% for the particle concentration levels of 7%, 10%, and 15% compared with no-particle case. In the 7% Fe3O4 nanoparticles, 100% fractional damage index is achieved after ablation time of 18 s whereas tissue annihilation approach proceeds longer to complete for no-particle case. The outcomes indicate that injecting nanoparticles may lessen ablation time in surgeries and prevent damage to adjacent healthy tissue.
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Affiliation(s)
- S M C Hossain
- Department of Applied Mathematics, University of Dhaka, Dhaka, 1000, Bangladesh.
- Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, 230027, China.
| | - J B Zakaria
- Department of Applied Mathematics, University of Dhaka, Dhaka, 1000, Bangladesh
| | - M Ferdows
- Department of Applied Mathematics, University of Dhaka, Dhaka, 1000, Bangladesh
| | - M Z I Bangalee
- Department of Applied Mathematics, University of Dhaka, Dhaka, 1000, Bangladesh
| | - M S Alam
- Department of Mathematics, Jagannath University, Dhaka, 1100, Bangladesh
| | - G Zhao
- Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, 230027, China.
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Lim YZ, Wang Y, Urquhart DM, Estee MM, Wluka AE, Heritier S, Cicuttini FM. Metformin for knee osteoarthritis with obesity: study protocol for a randomised, double-blind, placebo-controlled trial. BMJ Open 2023; 13:e079489. [PMID: 38070903 PMCID: PMC10729261 DOI: 10.1136/bmjopen-2023-079489] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
INTRODUCTION Over half of the populations with knee osteoarthritis (OA) have obesity. These individuals have many other shared metabolic risk factors. Metformin is a safe, inexpensive, well-tolerated drug that has pleiotropic effects, including structural protection, anti-inflammatory and analgesic effects in OA, specifically the knee. The aim of this randomised, double-blind, placebo-controlled trial is to determine whether metformin reduces knee pain over 6 months in individuals with symptomatic knee OA who are overweight or obese. METHODS AND ANALYSIS One hundred and two participants with symptomatic knee OA and overweight or obesity will be recruited from the community in Melbourne, Australia, and randomly allocated in a 1:1 ratio to receive either metformin 2 g or identical placebo daily for 6 months. The primary outcome is reduction of knee pain [assessed by 100 mm Visual Analogue Scale (VAS)] at 6 months. The secondary outcomes are OMERACT-OARSI (Outcome Measures in Rheumatology-Osteoarthritis Research Society International) responder criteria [Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain, function and participant's global assessment (VAS)] at 6 months; change in knee pain, stiffness, function using WOMAC at 6 months and quality of life at 6 months. Adverse events will be recorded. The primary analysis will be by intention to treat, including all participants in their randomised groups. ETHICS AND DISSEMINATION Ethics approval has been obtained from the Alfred Hospital Ethics Committee (708/20) and Monash University Human Research Ethics Committee (28498). Written informed consent will be obtained from all the participants. The findings will be disseminated through peer-review publications and conference presentations. TRIAL REGISTRATION NUMBER ACTRN12621000710820 .
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Affiliation(s)
- Yuan Z Lim
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria 3004, Australia
| | - Yuanyuan Wang
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria 3004, Australia
| | - Donna M Urquhart
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria 3004, Australia
| | - Mahnuma Mahfuz Estee
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria 3004, Australia
| | - Anita E Wluka
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria 3004, Australia
| | - Stephane Heritier
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria 3004, Australia
| | - Flavia M Cicuttini
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria 3004, Australia
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Kanak NA, Shahruzzaman M, Islam MS, Takafuji M, Rahman MM, Kabir SF. Fabrication of Electrospun PLA-nHAp Nanocomposite for Sustained Drug Release in Dental and Orthopedic Applications. Materials (Basel) 2023; 16:ma16103691. [PMID: 37241318 DOI: 10.3390/ma16103691] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 05/28/2023]
Abstract
This study describes the fabrication of nanocomposites using electrospinning technique from poly lactic acid (PLA) and nano-hydroxyapatite (n-HAp). The prepared electrospun PLA-nHAP nanocomposite is intended to be used for drug delivery application. A hydrogen bond in between nHAp and PLA was confirmed by Fourier transform infrared (FT-IR) spectroscopy. Degradation study of the prepared electrospun PLA-nHAp nanocomposite was conducted for 30 days both in phosphate buffer solution (PBS) of pH 7.4 and deionized water. The degradation of the nanocomposite occurred faster in PBS in comparison to water. Cytotoxicity analysis was conducted on both Vero cells and BHK-21 cells and the survival percentage of both cells was found to be more than 95%, which indicates that the prepared nanocomposite is non-toxic and biocompatible. Gentamicin was loaded in the nanocomposite via an encapsulation process and the in vitro drug delivery process was investigated in phosphate buffer solution at different pHs. An initial burst release of the drug was observed from the nanocomposite after 1 to 2 weeks for all pH media. After that, a sustained drug release behavior was observed for the nanocomposite for 8 weeks with a release of 80%, 70% and 50% at pHs 5.5, 6.0 and 7.4, respectively. It can be suggested that the electrospun PLA-nHAp nanocomposite can be used as a potential antibacterial drug carrier for sustained drug release in dental and orthopedic sector.
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Affiliation(s)
- Nishat Anzum Kanak
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka 1000, Bangladesh
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Md Shahruzzaman
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka 1000, Bangladesh
| | - Md Sazedul Islam
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka 1000, Bangladesh
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, USA
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto 860-8555, Japan
| | - Mohammed Mizanur Rahman
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka 1000, Bangladesh
| | - Sumaya F Kabir
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka 1000, Bangladesh
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Razu MH, Monir BB, Moniruzzaman M, Sarkar S, Akhter S, Kamal S, Hasan MA, Afroze M, Imam KMSU, Khan M. Performance Evaluation of SARS-CoV-2 Viral Transport Medium Produced by Bangladesh Reference Institute for Chemical Measurements. Diagnostics (Basel) 2023; 13:diagnostics13091622. [PMID: 37175013 PMCID: PMC10177798 DOI: 10.3390/diagnostics13091622] [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: 01/10/2023] [Revised: 01/29/2023] [Accepted: 01/30/2023] [Indexed: 05/15/2023] Open
Abstract
A viral transport medium (VTM) was developed following the Centers for Disease Control and Prevention, USA (US-CDC) standard operating procedure (SOP) DSR-052-05 with necessary improvisation and was used for storing coronavirus disease 2019 (COVID-19) swab specimens. Considering Bangladesh's supply chain and storage conditions, improvisation was essential for extending sample storage time while retaining efficiency. In-house VTM was produced using Hank's balanced salt solution (HBSS) supplemented with 1% bovine serum albumin V (BSA), 0.5 µg /mL of gentamicin sulfate, and 100 µg/mL of fluconazole. The produced VTM composition, quality, sterility, specificity, and efficiency were verified in-house and through an independent contract research organization (CRO). An accelerated stability study projected that under the recommended temperature (4 °C), it would remain stable for four months and preserve samples for over a month. The real-time reverse transcriptase-polymerase chain reaction (rRT-PCR) test detected the targeted N gene and ORF1ab gene from the VTM stored samples. Our VTM is equally as effective as the Sansure Biotech VTM in keeping SARS-CoV-2 RNA specimens detectable in rRT-PCR (100% sensitivity and specificity in random and blinded samples). In conclusion, the BRiCM VTM will make the battle against pandemics easier by effectively collecting and storing nasopharyngeal and oropharyngeal swabs for COVID-19 detection.
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Affiliation(s)
- Mamudul Hasan Razu
- Bangladesh Reference Institute for Chemical Measurements (BRICM), Dr. Qudrat-E-Khuda Road, Dhanmondi, Dhaka 1205, Bangladesh
| | - Bayzid Bin Monir
- National Institute of Laboratory Medicine and Referral Center (NILMRC), Sher-E-Bangla Nagar, Agargoan, Dhaka 1207, Bangladesh
| | - Md Moniruzzaman
- Bangladesh Reference Institute for Chemical Measurements (BRICM), Dr. Qudrat-E-Khuda Road, Dhanmondi, Dhaka 1205, Bangladesh
| | - Sawgotom Sarkar
- Bangladesh Reference Institute for Chemical Measurements (BRICM), Dr. Qudrat-E-Khuda Road, Dhanmondi, Dhaka 1205, Bangladesh
| | - Sonia Akhter
- Bangladesh Reference Institute for Chemical Measurements (BRICM), Dr. Qudrat-E-Khuda Road, Dhanmondi, Dhaka 1205, Bangladesh
| | - Sabiha Kamal
- Bangladesh Reference Institute for Chemical Measurements (BRICM), Dr. Qudrat-E-Khuda Road, Dhanmondi, Dhaka 1205, Bangladesh
| | - Md Abu Hasan
- Bangladesh Reference Institute for Chemical Measurements (BRICM), Dr. Qudrat-E-Khuda Road, Dhanmondi, Dhaka 1205, Bangladesh
| | - Mirola Afroze
- Bangladesh Reference Institute for Chemical Measurements (BRICM), Dr. Qudrat-E-Khuda Road, Dhanmondi, Dhaka 1205, Bangladesh
| | - Khandaker Md Sharif Uddin Imam
- Bangladesh Reference Institute for Chemical Measurements (BRICM), Dr. Qudrat-E-Khuda Road, Dhanmondi, Dhaka 1205, Bangladesh
| | - Mala Khan
- Bangladesh Reference Institute for Chemical Measurements (BRICM), Dr. Qudrat-E-Khuda Road, Dhanmondi, Dhaka 1205, Bangladesh
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Amin USM, Parvez N, Rahman TA, Hasan MR, Das KC, Jahan S, Hasanat MA, Seraj ZI, Salimullah M. CDKAL1 gene rs7756992 A/G and rs7754840 G/C polymorphisms are associated with gestational diabetes mellitus in a sample of Bangladeshi population: implication for future T2DM prophylaxis. Diabetol Metab Syndr 2022; 14:18. [PMID: 35090536 PMCID: PMC8796445 DOI: 10.1186/s13098-021-00782-w] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 12/30/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Association of single nucleotide polymorphisms (SNP) rs7756992 A/G and rs7754840 G/C of cyclin-dependent kinase 5 regulatory subunit-associated protein 1-like 1 (CDKAL1) gene with the susceptibility of gestational diabetes mellitus (GDM) has been studied in a group of Bangladeshi women. METHODS In this case-control study, 212 GDM patients and 256 control subjects were genotyped for rs7756992 and rs7754840 by PCR-RFLP and TaqMan™ allelic discrimination assay method respectively. Genotyping results were confirmed by DNA sequencing and replicated TaqMan™ assay. The odds ratios and their 95% confidence interval were calculated by logistic regression to determine the associations between genotypes and GDM. RESULTS The genotype frequencies of rs7756992-AA/AG/GG in the GDM group and the control group were 37%/48%, 53%/45%, 10%/7% and those of rs7754840-CC/CG/GG were 51%/55%, 40.1%/39.8%, 9%/5% respectively. Under dominant and log additive models rs7756992 was revealed significantly associated with GDM after being adjusted for family history of diabetes (FHD) and gravidity. Conversely, rs7754840 was significantly associated (P = 0.047) with GDM only under the recessive model after the same adjustment. The risk allele frequency of both SNPs was higher in the GDM group but significantly (P = 0.029) increased prevalence was observed in the rs7756992 G allele. When positive FHD and risk alleles of these SNPs were synergistically present in any pregnant woman, the chance of developing GDM was augmented by many folds. The codominant model revealed 2.5 and 2.1 folds increase in odds by AG (rs7756992) and GC (rs7754840) genotypes and 3.7 and 4.5 folds by GG (rs7756992) and CC (rs7754840) genotypes respectively. A significant 2.7 folds (P = 0.038) increase in odds of GDM resulted from the interaction of rs7756992 and family history of diabetes under the dominant model. The cumulative effect of multigravidity and risk alleles of these SNPs increased the odds of GDM more than 1.5 folds in different genotypes. CONCLUSION This study not only revealed a significant association between rs7756992 and rs7754840 with GDM but also provided the possibility as potential markers for foretelling about GDM and type 2 diabetes mellitus in Bangladeshi women.
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Affiliation(s)
- U S Mahzabin Amin
- Molecular Biotechnology Division, National Institute of Biotechnology (NIB), Ganakbari, Ashulia, Savar, Dhaka, 1349, Bangladesh
| | - Nahid Parvez
- Molecular Biotechnology Division, National Institute of Biotechnology (NIB), Ganakbari, Ashulia, Savar, Dhaka, 1349, Bangladesh
| | - Tahia Anan Rahman
- Molecular Biotechnology Division, National Institute of Biotechnology (NIB), Ganakbari, Ashulia, Savar, Dhaka, 1349, Bangladesh
| | - Md Rakibul Hasan
- Department of Endocrinology and Metabolism, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
| | - Keshob Chandra Das
- Molecular Biotechnology Division, National Institute of Biotechnology (NIB), Ganakbari, Ashulia, Savar, Dhaka, 1349, Bangladesh
| | - Sharmin Jahan
- Department of Endocrinology and Metabolism, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
| | - Muhammad Abul Hasanat
- Department of Endocrinology and Metabolism, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
| | - Zeba I Seraj
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | - Md Salimullah
- Molecular Biotechnology Division, National Institute of Biotechnology (NIB), Ganakbari, Ashulia, Savar, Dhaka, 1349, Bangladesh.
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Al Masud MA, Shaikh H, Alam MS, Karim MM, Momin MA, Islam MA, Khan GMA. Green synthesis of silk sericin-embedded silver nanoparticles and their antibacterial application against multidrug-resistant pathogens. J Genet Eng Biotechnol 2021; 19:74. [PMID: 33999298 PMCID: PMC8128943 DOI: 10.1186/s43141-021-00176-5] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 05/04/2021] [Indexed: 11/20/2022]
Abstract
BACKGROUND The green synthesis strategy of metallic nanoparticles (NPs) has become popular due to being environmentally friendly. Stable silver nanoparticles (AgNPs) have been synthesized by natural products such as starch, soy protein, various extract of leaves, barks, and roots functioning both as reducing and stabilizing agents. Likewise, silk sericin (SS) is a globular protein discarded in the silk factory might be used for NP synthesis. In this research, we focus on the green synthesis and stabilization of AgNPs by SS as well as assessment of their antibacterial activities against some drug-resistant pathogen. RESULTS SS was extracted from Bombyx mori silkworm cocoons in an aqueous medium. 17 w/w% of dry sericin powder with respect to the cocoon's weight was obtained by freeze-drying. Furthermore, AgNPs conjugated to sericin, i.e., SS-capped silver nanoparticles (SS-AgNPs) were synthesized by easy, cost-effective, and environment-friendly methods. The synthesized SS-AgNPs were characterized by UV-visible spectroscopy, Fourier-transform infrared-attenuated total reflection (FTIR-ATR) spectroscopy, transmission electron microscopy (TEM), and X-ray diffraction measurement. It has been found from the absorbance of UV-visible spectroscopy that a higher percent of SS-AgNPs was obtained at a higher concentration of silver nitrate solution. FTIR-ATR spectra showed that the carboxylate groups obtained from silk sericin act as a reducing agent for the synthesis of silver nanoparticles, while NH2+ and COO- act as a stabilizer of AgNPs. The X-ray diffractogram of SS-AgNPs was quite different from AgNO3 and sericin due to a change in the crystal structure. The diameter of AgNPs was around 20-70 nm observed using TEM. The synthesized SS-AgNPs exhibited strong antibacterial activity against multidrug-resistant pathogens, Escherichia coli and Pseudomonas aeruginosa. Minimal inhibitory/bactericidal concentrations against E. coli and P. aeruginosa were 20μg/mL. CONCLUSIONS This study encourages the use of Bombyx mori for the ecofriendly synthesis of SS-AgNPs to control multidrug-resistant microorganisms.
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Affiliation(s)
- Md Abdullah Al Masud
- Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia, 7003, Bangladesh
| | - Hamid Shaikh
- Department of Chemical Engineering, King Saud University, Riyadh, Saudi Arabia
| | - Md Shamsul Alam
- Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia, 7003, Bangladesh
| | - M Minnatul Karim
- Department of Biotechnology and Genetic Engineering, Islamic University, Kushtia, 7003, Bangladesh
| | - M Abdul Momin
- Department of Electric and Electronic Engineering, Islamic University, Kushtia, 7003, Bangladesh
| | - M Ariful Islam
- Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia, 7003, Bangladesh
| | - G M Arifuzzaman Khan
- Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia, 7003, Bangladesh.
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Hossain MI, Debnath T, Mollah MYA, Susan MABH, Islam MM. Highly robust, novel aluminum counter cation-based monophosphate tungsten bronze electro-catalysts for oxygen evolution in acidic solution. RSC Adv 2021; 11:10681-10687. [PMID: 35423566 PMCID: PMC8695596 DOI: 10.1039/d1ra00699a] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 02/25/2021] [Indexed: 12/05/2022] Open
Abstract
This study describes the successful synthesis of novel bronze with a low tungsten oxidation state for the efficient electro-catalytic oxidation of water. An extraordinarily robust monophosphate tungsten bronze (MPTB)-modified graphite anode was successfully fabricated for the oxygen evolution reaction (OER) at a thermodynamic potential of 1.23 V in H2SO4 acidic solution. Several Al, Cr and Fe counter-cation-based MPTBs were synthesized by the solution combustion method. Novel Al-based MPTBs calcined at 700 °C in O2 (AlO7) showed almost zero onset overpotential, high current density, high turnover frequency for OER and steady catalysis in repeated use even after 30 weeks. The orthorhombic AlO7 comprising crystallites of 9.89 nm and an indirect band gap (1.89 eV), is an unusually stable MPTB that contains 98% W5+ state stabilized with the Al3+ counter cation. The catalysis decreases as the ratio of W5+ : W6+ in MPTBs decreases and [410] and [601] facets play main roles in the first H2O association and nucleophilic attack of the second H2O molecule on the catalyst surface. Thus, MPTBs can be non-noble metal anode materials for robust acidic H2O electrolyzers.
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Affiliation(s)
- Md Imran Hossain
- Department of Chemistry, Faculty of Science, University of Dhaka Dhaka 1000 Bangladesh
| | - Tapas Debnath
- Department of Theoretical and Computational Chemistry, Faculty of Science, University of Dhaka Dhaka Bangladesh
| | - M Yousuf Ali Mollah
- Department of Chemistry, Faculty of Science, University of Dhaka Dhaka 1000 Bangladesh
| | | | - Md Mominul Islam
- Department of Chemistry, Faculty of Science, University of Dhaka Dhaka 1000 Bangladesh
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Ahammad AJS, Odhikari N, Shah SS, Hasan MM, Islam T, Pal PR, Ahmed Qasem MA, Aziz MA. Porous tal palm carbon nanosheets: preparation, characterization and application for the simultaneous determination of dopamine and uric acid. Nanoscale Adv 2019; 1:613-626. [PMID: 36132238 PMCID: PMC9473265 DOI: 10.1039/c8na00090e] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Accepted: 10/03/2018] [Indexed: 05/15/2023]
Abstract
A novel porous tal palm carbon nanosheet (PTPCN) material was synthesized from the leaves of Borassus flabellifer (tal palm) and used for developing an electrochemical sensor through modifying a glassy carbon electrode (GCE) simply by drop-casting on it a solution of the material for the sensitive simultaneous detection of dopamine (DA) and uric acid (UA), even in the presence of interfering species. The drop-casting solution was prepared by simply dispersing the PTPCNs in ethanol without using any other binding materials (e.g. Nafion). The surface morphologies of the PTPCNs were studied through field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and high resolution TEM (HRTEM). Energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction spectroscopy (XPS) studies revealed the chemical composition of the PTPCNs' surface. Their structural properties were studied using X-ray diffraction (XRD) and Raman spectroscopy. Brunauer-Emmett-Teller (BET) analysis confirmed the surface area and pore volume to be 1094.53 m2 g-1 and 0.74 cm3 g-1, respectively, while Barrett-Joyner-Halenda (BJH) pore-size distribution showed the average pore size to be 22 nm. The sufficiently large surface area and pore-size distribution suggested better electrocatalytic properties compared to the average modifying materials. The modified electrode (PTPCNs/GCE) was characterized through impedimetric and CV techniques in standard potassium ferricyanide solution for evaluating their charge-transfer resistance and electrochemical properties. The limits of detection (S/N = 3) were 0.17 μM and 0.078 μM and the sensitivities were 1.2057 μA μM-1 cm-2 and 2.693 μA μM-1 cm-2 for UA and DA, respectively. The possible interactions that took place between the PTPCNs and the analytes that aided in the enhancement of the electroanalytical performance of the PTPCNs/GCE are discussed based on the experimental findings and established theoretical concepts. The PTPCNs/GCE was successfully employed for analyzing real samples, like dopamine injection and urine.
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Affiliation(s)
- A J Saleh Ahammad
- Department of Chemistry, Jagannath University Dhaka 1100 Bangladesh +880 2 7113713 +880 2 9583794
| | - Noyon Odhikari
- Department of Chemistry, Jagannath University Dhaka 1100 Bangladesh +880 2 7113713 +880 2 9583794
| | - Syed Shaheen Shah
- Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia +966-13-860-7264 +966-13-860-3744
| | - Md Mahedi Hasan
- Department of Chemistry, Jagannath University Dhaka 1100 Bangladesh +880 2 7113713 +880 2 9583794
| | - Tamanna Islam
- Department of Chemistry, Jagannath University Dhaka 1100 Bangladesh +880 2 7113713 +880 2 9583794
| | - Poly Rani Pal
- Department of Chemistry, Jagannath University Dhaka 1100 Bangladesh +880 2 7113713 +880 2 9583794
| | - Mohammed Ameen Ahmed Qasem
- Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia +966-13-860-7264 +966-13-860-3744
| | - Md Abdul Aziz
- Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia +966-13-860-7264 +966-13-860-3744
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Hasibuzzaman MM, Hossain S, Islam MS, Rahman A, Anjum A, Hossain F, Mohanto NC, Karim MR, Hoque MM, Saud ZA, Miyataka H, Himeno S, Hossain K. Association between arsenic exposure and soluble thrombomodulin: A cross sectional study in Bangladesh. PLoS One 2017; 12:e0175154. [PMID: 28399171 PMCID: PMC5388467 DOI: 10.1371/journal.pone.0175154] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 03/21/2017] [Indexed: 11/19/2022] Open
Abstract
Chronic exposure to arsenic is associated with increased morbidity and mortality from cardiovascular disease (CVD); however, plausible biomarker for early prediction and the underlying mechanism of arsenic-related CVD have not yet been clearly understood. Endothelial dysfunction plays a central role in the development of CVD. We hypothesized that endothelial damage or dysfunction is an important aspect and may be an early event of arsenic-related CVD. Soluble thrombomodulin (sTM) in serum is thought to be a specific and stable marker for endothelial damage or dysfunction. This study was designed to evaluate the association between chronic exposure to arsenic and sTM among human subjects in arsenic-endemic and non-endemic rural areas in Bangladesh. A total of 321 study subjects (217 from arsenic-endemic areas and 104 from a non-endemic area) were recruited. Subjects' arsenic exposure levels (i.e., drinking water, hair and nail arsenic concentrations) were measured by Inductively Coupled Plasma Mass Spectroscopy. The subjects' serum sTM levels were quantified by immunoassay kit. The average sTM levels of the subjects in arsenic-endemic and non-endemic areas were 4.58 ± 2.20 and 2.84 ± 1.29 (ng mL-1) respectively, and the difference was significant (p<0.001). Arsenic exposure levels showed a significant (water arsenic: rs = 0.339, p<0.001, hair arsenic: rs = 0.352, p<0.001 and nail arsenic: rs = 0.308, p<0.001) positive associations with sTM levels. Soluble TM levels were higher in the higher exposure gradients if we stratified the subjects into tertile groups (low, medium and high) based on the arsenic concentrations of the subjects' drinking water, hair and nails. Finally, increased levels of sTM were negatively correlated with high density lipoprotein cholesterol (HDL-C), and positively correlated with intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1). Results of this study show that chronic exposure to arsenic has mild to moderate association with sTM levels.
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Affiliation(s)
- M. M. Hasibuzzaman
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | - Shakhawoat Hossain
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | - Md. Shofikul Islam
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, Bangladesh
| | - Atiqur Rahman
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | - Adiba Anjum
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | - Faruk Hossain
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | - Nayan Chandra Mohanto
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | - Md. Rezaul Karim
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, Bangladesh
| | - Md. Mominul Hoque
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | - Zahangir Alam Saud
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | - Hideki Miyataka
- Laboratory of Molecular Nutrition and Toxicology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan
| | - Seiichiro Himeno
- Laboratory of Molecular Nutrition and Toxicology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan
| | - Khaled Hossain
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
- * E-mail:
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