Search results for: Naznin Sultana

Items from 1 to 20 out of 22 results

article

A novel knowledge-derived data potentizing method revealed unique liver cancer-associated genetic variants

Naznin Sultana, Mijanur Rahman, Sanat Myti, Jikrul Islam, more

Human Genomics > 2019 > 13 > 1 > 1-10

Background Next-generation sequencing (NGS) has been advancing the progress of detection of disease-associated genetic variants and genome-wide profiling of expressed sequences over the past decade. NGS enables the analyses of multiple regions of a genome in a single reaction format and has been shown to be a cost-effective and efficient tool for root-cause analysis of disease and optimization of...

article

Comparison of biophysical properties characterized for microtissues cultured using microencapsulation and liquid crystal based 3D cell culture techniques

Chin Fhong Soon, Kian Sek Tee, Soon Chuan Wong, Nafarizal Nayan, more

Cytotechnology > 2018 > 70 > 1 > 13-29

Growing three dimensional (3D) cells is an emerging research in tissue engineering. Biophysical properties of the 3D cells regulate the cells growth, drug diffusion dynamics and gene expressions. Scaffold based or scaffoldless techniques for 3D cell cultures are rarely being compared in terms of the physical features of the microtissues produced. The biophysical properties of the microtissues cultured...

article

Characterization, drug loading and antibacterial activity of nanohydroxyapatite/polycaprolactone (nHA/PCL) electrospun membrane

Mohd Izzat Hassan, Naznin Sultana

00003 Biotech > 2017 > 7 > 4 > 1-9

Considering the important factor of bioactive nanohydoxyapatite (nHA) to enhance osteoconductivity or bone-bonding capacity, nHA was incorporated into an electrospun polycaprolactone (PCL) membrane using electrospinning techniques. The viscosity of the PCL and nHA/PCL with different concentrations of nHA was measured and the morphology of the electrospun membranes was compared using a field emission...

article

In vitro cytotoxicity and antibacterial activity of silver-coated electrospun polycaprolactone/gelatine nanofibrous scaffolds

Mim Mim Lim, Naznin Sultana

00003 Biotech > 2016 > 6 > 2 > 1-10

The development of nano-sized scaffolds with antibacterial properties that mimic the architecture of tissue is one of the challenges in tissue engineering. In this study, polycaprolactone (PCL) and PCL/gelatine (Ge) (70:30) nanofibrous scaffolds were fabricated using a less toxic and common solvent, formic acid and an electrospinning technique. Nanofibrous scaffolds were coated with silver (Ag) in...

article

Conductive PEDOT:PSS coated polylactide (PLA) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) electrospun membranes: Fabrication and characterization

Hui Chung Chang, Tao Sun, Naznin Sultana, Mim Mim Lim, more

Materials Science and Engineering: C > 2016 > 61 > C > 396-410

In the current study, electrospinning technique was used to fabricate composite membranes by blending of a synthetic polymer, polylactic acid (PLA) and a natural polymer, poly(3-hydroxybutyrate-co-3-hydroxyvalerate), PHBV. Conductive membranes were prepared by dipping PLA/PHBV electrospun membranes into poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) (PEDOT:PSS) solution, which is a biocompatible...

article

Characterization of the zebrafish cx36.7 gene promoter: Its regulation of cardiac-specific expression and skeletal muscle-specific repression

Hisako Miyagi, Kakon Nag, Naznin Sultana, Keijiro Munakata, more

Gene > 2016 > 577 > 2 > 265-274

Zebrafish connexin 36.7 (cx36.7/ecx) has been identified as a key molecule in the early stages of heart development in this species. A defect in cx36.7 causes severe heart malformation due to the downregulation of nkx2.5 expression, a result which resembles congenital heart disease in humans. It has been shown that cx36.7 is expressed specifically in early developing heart cardiomyocytes. However,...

article

Cellulose acetate electrospun nanofibrous membrane: fabrication, characterization, drug loading and antibacterial properties

Naznin Sultana, Anisah Zainal

Bulletin of Materials Science > 2016 > 39 > 2 > 337-343

Cellulose-based materials are one of the most commonly used materials for biomedical applications, which normally applied as carriers for pharmaceuticals and drug-releasing scaffolds. In this study, cellulose acetate (CA) was used to fabricate the nanofibrous membrane using the electrospinning technique. CA solutions at different concentrations were prepared by dissolving the polymer in a mixture...

article

Disclosure and help seeking behavior of women exposed to physical spousal violence in Dhaka slums

Kausar Parvin, Naznin Sultana, Ruchira Tabassum Naved

BMC Public Health > 2016 > 16 > 1 > 1-8

Background Despite high prevalence of intimate partner violence (IPV) and its adverse social and health consequences, the rate of help seeking for IPV is generally low. Although the level of IPV is much higher in urban slums of Bangladesh, the level and nature of help seeking of the victims are unknown. This paper aims to address this gap in the literature. Methods Using a cross-sectional survey...

chapter

Poly(Caprolactone)/chitosan-based scaffold using freeze drying technique for bone tissue engineering application

Lor Huai Chong, Nadira Zamal Zarith, Naznin Sultana

2015 10th Asian Control Conference (ASCC) > 1 - 4

2015 10th Asian Control Conference (ASCC)

Highly porous 3Dimensional (3D) scaffold becomes a promising alternative approach for bone repairing. The aim of this research was to fabricate Polycaprolactone (PCL) blended with chitosan 3D-porous scaffold with improved hydrophilic behavior for bone tissue engineering applications. An effective technique, freeze drying technique was chosen to produce the sponge-like porous 3D scaffolds of 10%w/v...

chapter

Electrospun Polycaprolactone (PCL) and PCL/ nano-hydroxyapatite (PCL/nHA)-based nanofibers for bone tissue engineering application

Lor Huai Chong, Mohd Izzat Hassan, Naznin Sultana

2015 10th Asian Control Conference (ASCC) > 1 - 4

2015 10th Asian Control Conference (ASCC)

Ceramic/polymer composite scaffolds have been widely investigated for repairing and regeneration of damaged bone tissues. In this report, the electrospinning technique was chosen to fabricate two different kinds of fibrous scaffolds which were Polycaprolactone (PCL) and PCL/nano-hydroxyapatite (PCL/nHA). Several characterizations such as morphologies of fibers, average diameter and water uptake property...

article

Ligand-induced internalization, recycling, and resensitization of adrenomedullin receptors depend not on CLR or RAMP alone but on the receptor complex as a whole

Kakon Nag, Naznin Sultana, Akira Kato, Anna Dranik, more

General and Comparative Endocrinology > 2015 > 212 > Complete > 156-162

Adrenomedullins (AM) is a multifaceted distinct subfamily of peptides that belongs to the calcitonin gene-related peptide (CGRP) superfamily. These peptides exert their functional activities via associations of calcitonin receptor-like receptors (CLRs) and receptor activity-modifying proteins (RAMPs) RAMP2 and RAMP3. Recent studies established that RAMPs and CLRs can modify biochemical properties...

chapter

Effects of parameters on the fabrication of poly(caprolactone) electrospun membrane using electrospinning technique

Mim Mim Lim, Naznin Sultana

2014 IEEE Conference on Biomedical Engineering and Sciences (IECBES) > 251 - 255

2014 IEEE Conference on Biomedical Engineering and Sciences (IECBES)

Due to the ability to fabricate fibrous scaffolds with micro and nano-scale properties, electrospinning technique has received much interest. Poly(caprolactone) (PCL) fibrous scaffolds with micro and nano-scale fibers and surface-porous fibers have not been explicitly investigated. In this study, the results of modulating the factors on processing route on fibrous scaffold morphology were investigated...

chapter

Drug loading, drug release and in vitro degradation of poly(caprolactone) electrospun fibers

Mim Mim Lim, Naznin Sultana

2014 IEEE Conference on Biomedical Engineering and Sciences (IECBES) > 356 - 359

2014 IEEE Conference on Biomedical Engineering and Sciences (IECBES)

In this study, model drug of Fluorescein Isothiocyanate-Dextran (FD70S) was incorporated into poly(caprolactone) (PCL) electrospun fibers. Drug loading was successful and drug release was measured by using microplate reader. The result showed FD70S was successfully released from PCL electrospun fibers. In order to investigate the biodegradable ability of PCL electrospun fibers, in vitro degradation...

article

An integrated biorefinery initiative in producing dissolving pulp from agricultural wastes

M. Sarwar Jahan, Naznin Sultana, Mostafizur Rahman, A. Quaiyyum

Biomass Conversion and Biorefinery > 2013 > 3 > 3 > 179-185

Considering the environmental impact and fluctuating price of fossil fuels, interest is growing in the alternatives sources. As a result, the lignocellulosic materials are becoming more popular for the production of chemicals and energy, in addition to pulp in the frame of biorefinery concept to provide a sustainable, environmentally friendly, and reliable resource. In order to assess agricultural...

chapter

Production of hydroxyapatite(HA) nanoparticle and HA/PCL tissue engineering scaffolds for bone tissue engineering

Mohd Izzat Hassan, Masturah Mokhtar, Naznin Sultana, Tareef Hayat Khan

2012 IEEE-EMBS Conference on Biomedical Engineering and Sciences > 239 - 242

2012 IEEE EMBS Conference on Biomedical Engineering and Sciences (IECBES 2012)

Hydroxyapatite (HA) is biological apatite has close similarity of composition with human bone and teeth. Thus, it has been used in biomedical application in orthopedic and dentistry. The wet slurry of HA was successfully produced by mixing an acetone solution of calcium nitrate 4-hydrate with an aqueous solution of ammonium phosphate and ammonium carbonate with control pH of 11. The nano-emulsion...

chapter

Analytical modeling of the SOI four-gate transistor using conformal mapping

Farhana Sharmin Snigdha, Mehedy Hasan Bappy, Naznin Sultana, Shaeera Rabbanee Shuvra, more

2012 7th International Conference on Electrical and Computer Engineering > 806 - 809

2012 7th International Conference on Electrical & Computer Engineering (ICECE)

Conformal mapping technique is used to model potential distribution of SOI four gate transistor in sub threshold region. The modeling is based on the solution of Laplace's equation. Potential variation between the lateral junction- gates is assumed to be parabolic. The potential variation between the MOS gates and junction gates are also studied for different structural parameters.

article

Calcitonin receptor-like receptor (CLR) influences posttranslational events of receptor activity-modifying proteins (RAMPs)

Kakon Nag, Naznin Sultana, Shigehisa Hirose

Biochemical and Biophysical Research Communications > 2012 > 418 > 4 > 824-829

Adrenomedullins (AM) form a multifunctional subfamily of the calcitonin gene-related peptide (CGRP) superfamily, the members of which exert their physiological roles through a 1:1 combination of calcitonin receptor-like receptors (CLRs) and receptor activity-modifying proteins (RAMPs). It has been shown that RAMPs can modify the biochemical properties of CLRs; for example, RAMP escorts CLR to the...

chapter

Production and characterization of tissue engineering scaffolds based on polyhydroxybutyrate-co-hydroxyvalerate polymers

Naznin Sultana

2012 International Conference on Biomedical Engineering (ICoBE) > 129 - 132

2012 International Conference on Biomedical Engineering (ICoBE)

In the engineering of various tissues, the scaffold material and architecture of the scaffold can affect cell seeding and tissue growth both in vitro and in vivo. This paper reports the production of three-dimensional, highly porous tissue engineering scaffolds based on Poly (hydroxybutyrate-co-hydroxyvalerate) (PHBV) biopolymers. Polyhydroxybutyrate-co-hydroxyvalerate (PHBV) is a biocompatible and...

article

Fabrication of HA/PHBV composite scaffolds through the emulsion freezing/freeze-drying process and characterisation of the scaffolds

Naznin Sultana, Min Wang

Journal of Materials Science: Materials in Medicine > 2008 > 19 > 7 > 2555-2561

Biodegradable polymer-based scaffolds containing osteoconductive hydroxyapatite (HA) particles can be very useful for bone tissue engineering. In this investigation, HA nanoparticles were incorporated in poly(hydroxybutyrate-co-valerate) (PHBV) polymer to fabricate osteoconductive composite scaffolds. PHBV and HA/PHBV scaffolds were made using an emulsion freezing/freeze-drying technique. The scaffolds...

article

Headless splice variant acting as dominant negative calcitonin receptor

Kakon Nag, Naznin Sultana, Akira Kato, Shigehisa Hirose

Biochemical and Biophysical Research Communications > 2007 > 362 > 4 > 1037-1043

Calcitonin receptor (CTR) is a member of class B G protein-coupled receptor (GPCR) superfamily. We have recently identified the CTR gene and its two transcriptional isoforms, mfCTR and mfCTRΔN, in mefugu (mf) (Takifugu obscurus). Here we characterized the mfCTRΔN that lacks hormone-binding extracellular N-terminal domain. Strong expression in the liver and weak but broad tissue distribution of its...

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Search results for: Naznin Sultana

A novel knowledge-derived data potentizing method revealed unique liver cancer-associated genetic variants

Comparison of biophysical properties characterized for microtissues cultured using microencapsulation and liquid crystal based 3D cell culture techniques

Characterization, drug loading and antibacterial activity of nanohydroxyapatite/polycaprolactone (nHA/PCL) electrospun membrane

In vitro cytotoxicity and antibacterial activity of silver-coated electrospun polycaprolactone/gelatine nanofibrous scaffolds

Conductive PEDOT:PSS coated polylactide (PLA) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) electrospun membranes: Fabrication and characterization

Characterization of the zebrafish cx36.7 gene promoter: Its regulation of cardiac-specific expression and skeletal muscle-specific repression

Cellulose acetate electrospun nanofibrous membrane: fabrication, characterization, drug loading and antibacterial properties

Disclosure and help seeking behavior of women exposed to physical spousal violence in Dhaka slums

Poly(Caprolactone)/chitosan-based scaffold using freeze drying technique for bone tissue engineering application

Electrospun Polycaprolactone (PCL) and PCL/ nano-hydroxyapatite (PCL/nHA)-based nanofibers for bone tissue engineering application

Ligand-induced internalization, recycling, and resensitization of adrenomedullin receptors depend not on CLR or RAMP alone but on the receptor complex as a whole

Effects of parameters on the fabrication of poly(caprolactone) electrospun membrane using electrospinning technique

Drug loading, drug release and in vitro degradation of poly(caprolactone) electrospun fibers

An integrated biorefinery initiative in producing dissolving pulp from agricultural wastes

Production of hydroxyapatite(HA) nanoparticle and HA/PCL tissue engineering scaffolds for bone tissue engineering

Analytical modeling of the SOI four-gate transistor using conformal mapping

Calcitonin receptor-like receptor (CLR) influences posttranslational events of receptor activity-modifying proteins (RAMPs)

Production and characterization of tissue engineering scaffolds based on polyhydroxybutyrate-co-hydroxyvalerate polymers

Fabrication of HA/PHBV composite scaffolds through the emulsion freezing/freeze-drying process and characterisation of the scaffolds

Headless splice variant acting as dominant negative calcitonin receptor

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