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Search for "permeability" in Full Text gives 179 result(s) in Beilstein Journal of Nanotechnology.

Nanotechnological approaches in the treatment of schistosomiasis: an overview

  • Lucas Carvalho,
  • Michelle Sarcinelli and
  • Beatriz Patrício

Beilstein J. Nanotechnol. 2024, 15, 13–25, doi:10.3762/bjnano.15.2

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  • ]. Praziquantel is a class II compound according to the biopharmaceutical classification system (BCS), so it has low solubility and high permeability in the gastrointestinal tract [6]. This drug is affected by the first-pass effect on the liver, which also impacts its bioavailability [6]. Unfortunately, this
  • permeability through the cellular membrane by making a nanoemulsion of Curcuma longa extract (i.e., the curcumin plant source). The nanoemulsion showed an effect against adults of S. mansoni in vitro (especially males). This is an interesting finding because data from the literature reports that females are
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Published 03 Jan 2024

TEM sample preparation of lithographically patterned permalloy nanostructures on silicon nitride membranes

  • Joshua Williams,
  • Michael I. Faley,
  • Joseph Vimal Vas,
  • Peng-Han Lu and
  • Rafal E. Dunin-Borkowski

Beilstein J. Nanotechnol. 2024, 15, 1–12, doi:10.3762/bjnano.15.1

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  • –iron alloy (80 atom % Ni and 20 atom % Fe) that has a small coercive field (Hc) [17] and low magnetostriction (λs) [18], as well as high permeability and high saturation magnetization (Ms) [19]. TEM offers high spatial resolution for magnetic imaging. TEM-based magnetic imaging techniques such as
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Published 02 Jan 2024

Elasticity, an often-overseen parameter in the development of nanoscale drug delivery systems

  • Agnes-Valencia Weiss and
  • Marc Schneider

Beilstein J. Nanotechnol. 2023, 14, 1149–1156, doi:10.3762/bjnano.14.95

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  • the interaction with mucus in vitro, they demonstrated that the apparent permeability coefficient (Papp value) through porcine intestinal mucus as well as the diffusion determined by particle tracking is significantly higher for softer particles. However, as soon as cells are included in the system
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Published 23 Nov 2023

Curcumin-loaded albumin submicron particles with potential as a cancer therapy: an in vitro study

  • Nittiya Suwannasom,
  • Netsai Sriaksorn,
  • Chutamas Thepmalee,
  • Krissana Khoothiam,
  • Ausanai Prapan,
  • Hans Bäumler and
  • Chonthida Thephinlap

Beilstein J. Nanotechnol. 2023, 14, 1127–1140, doi:10.3762/bjnano.14.93

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  • HSA-MPs reflects the negative charge of the albumin biopolymers [26]. In fact, in the cationic HSA-MPs with negative charges, CUR loading did not alter the zeta potential of CUR-HSA-MPs. Furthermore, particles with negative surface charge exhibit the enhanced permeability and retention (EPR) effect
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Published 21 Nov 2023

Antibody-conjugated nanoparticles for target-specific drug delivery of chemotherapeutics

  • Mamta Kumari,
  • Amitabha Acharya and
  • Praveen Thaggikuppe Krishnamurthy

Beilstein J. Nanotechnol. 2023, 14, 912–926, doi:10.3762/bjnano.14.75

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  • circulation time and serum stability. Also, they enable drug release in a sustained and controlled manner [4]. Targeted delivery of drug-loaded NPs can be achieved either through passive targeting, where drugs accumulate in tumor tissues via the enhanced permeability and retention (EPR) effect, or through
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Published 04 Sep 2023

Nanostructured lipid carriers containing benznidazole: physicochemical, biopharmaceutical and cellular in vitro studies

  • Giuliana Muraca,
  • María Esperanza Ruiz,
  • Rocío C. Gambaro,
  • Sebastián Scioli-Montoto,
  • María Laura Sbaraglini,
  • Gisel Padula,
  • José Sebastián Cisneros,
  • Cecilia Yamil Chain,
  • Vera A. Álvarez,
  • Cristián Huck-Iriart,
  • Guillermo R. Castro,
  • María Belén Piñero,
  • Matias Ildebrando Marchetto,
  • Catalina Alba Soto,
  • Germán A. Islan and
  • Alan Talevi

Beilstein J. Nanotechnol. 2023, 14, 804–818, doi:10.3762/bjnano.14.66

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  • (Benznidazole Evaluation for Interrupting Trypanosomiasis) trial could not prove that the standard treatment with BNZ can prevent disease progression [11]. BNZ has been classified as a class IV drug (low solubility, low permeability) in the Biopharmaceutics Classification System (BCS) [12]. It has an apparent
  • volume of distribution (Vd) of 0.56 L/kg, and reactive products of its metabolism [13]. Such Vd and low permeability values across biological barriers could result in difficulties for BNZ to reach intracellular amastigotes. The encapsulation of BNZ within nanoscale pharmaceutical carriers has been
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Published 28 Jul 2023

Silver nanoparticles loaded on lactose/alginate: in situ synthesis, catalytic degradation, and pH-dependent antibacterial activity

  • Nguyen Thi Thanh Tu,
  • T. Lan-Anh Vo,
  • T. Thu-Trang Ho,
  • Kim-Phuong T. Dang,
  • Van-Dung Le,
  • Phan Nhat Minh,
  • Chi-Hien Dang,
  • Vinh-Thien Tran,
  • Van-Su Dang,
  • Tran Thi Kim Chi,
  • Hieu Vu-Quang,
  • Radek Fajgar,
  • Thi-Lan-Huong Nguyen,
  • Van-Dat Doan and
  • Thanh-Danh Nguyen

Beilstein J. Nanotechnol. 2023, 14, 781–792, doi:10.3762/bjnano.14.64

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  • cytoplasm and cell wall, leading to increased permeability and, eventually, disruption of the bacterial cell wall [26]. This disruption can deactivate respiratory enzymes, resulting in the generation of reactive oxygen species [27] and the inhibition of adenosine triphosphate release [26]. The antibacterial
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Published 04 Jul 2023

Investigations on the optical forces from three mainstream optical resonances in all-dielectric nanostructure arrays

  • Guangdong Wang and
  • Zhanghua Han

Beilstein J. Nanotechnol. 2023, 14, 674–682, doi:10.3762/bjnano.14.53

Graphical Abstract
  • perpendicular to and pointing toward the outside of the surface, and ⟨Tij⟩ is the time-averaged MST [18] defined by where the indices i and j denote x, y, or z components of the electric or magnetic field; εr and μr are the relative permittivity and the relative permeability of the surrounding medium
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Published 02 Jun 2023

ZnO-decorated SiC@C hybrids with strong electromagnetic absorption

  • Liqun Duan,
  • Zhiqian Yang,
  • Yilu Xia,
  • Xiaoqing Dai,
  • Jian’an Wu and
  • Minqian Sun

Beilstein J. Nanotechnol. 2023, 14, 565–573, doi:10.3762/bjnano.14.47

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  • . Their relationship can be expresses as: where εr is the complex permittivity, εr = ε′ − jε″, μr is the complex permeability, μr = μ′ − jμ″, ƒ is the frequency, d is the thickness of the material, and c is the speed of light. The microwave absorption of the SCZ samples strongly depends on the dosage of
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Published 04 May 2023

Plasmonic nanotechnology for photothermal applications – an evaluation

  • A. R. Indhu,
  • L. Keerthana and
  • Gnanaprakash Dharmalingam

Beilstein J. Nanotechnol. 2023, 14, 380–419, doi:10.3762/bjnano.14.33

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  • surrounding medium [63]: PLSPR is the power absorbed by the nanoparticle, ε0 and μ0 are, respectively, the permittivity and permeability of vacuum, nm is the refractive index of the surrounding medium, and is the amplitude of the transverse incident wave of the laser source. Equation 24 can be simplified in
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Published 27 Mar 2023

Overview of mechanism and consequences of endothelial leakiness caused by metal and polymeric nanoparticles

  • Magdalena Lasak and
  • Karol Ciepluch

Beilstein J. Nanotechnol. 2023, 14, 329–338, doi:10.3762/bjnano.14.28

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  • bidirectional vascular permeability, which may contribute to the formation of cancer metastases. In this review we are focusing on the effect of metal and polymeric NPs on mechanism and degree of induction of NanoEL, as well as on the benefits and risks of using NPs that induce endothelial leakiness. Keywords
  • : endothelial leakiness; metal nanoparticles; NanoEL; nanotoxicity; vascular permeability; Review Introduction The vascular barrier is a highly selective boundary between blood and tissues. Its proper functioning is essential to maintaining homeostasis of the whole organism. Formed from mesodermal endothelial
  • extracellular signals and regulate the function of the vascular barrier [3]. The endothelium is also covered by a negatively charged layer of glycocalyx, which has a protective function and is involved in the transport of molecules across the endothelium [11][12]. The degree of endothelial permeability depends
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Published 08 Mar 2023

Recent progress in cancer cell membrane-based nanoparticles for biomedical applications

  • Qixiong Lin,
  • Yueyou Peng,
  • Yanyan Wen,
  • Xiaoqiong Li,
  • Donglian Du,
  • Weibin Dai,
  • Wei Tian and
  • Yanfeng Meng

Beilstein J. Nanotechnol. 2023, 14, 262–279, doi:10.3762/bjnano.14.24

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  • BBB permeability, which restricts the treatment of brain-related diseases [49]. Aggressive metastases to brain tumors are common in various types of tumors, such as melanoma, lung cancer, and breast cancer [27]. These tumor cells are able to cross the BBB and adhere to brain tissue. This process is
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Published 27 Feb 2023

Nanotechnology – a robust tool for fighting the challenges of drug resistance in non-small cell lung cancer

  • Filip Gorachinov,
  • Fatima Mraiche,
  • Diala Alhaj Moustafa,
  • Ola Hishari,
  • Yomna Ismail,
  • Jensa Joseph,
  • Maja Simonoska Crcarevska,
  • Marija Glavas Dodov,
  • Nikola Geskovski and
  • Katerina Goracinova

Beilstein J. Nanotechnol. 2023, 14, 240–261, doi:10.3762/bjnano.14.23

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  • nanosized drug delivery carriers: Mixed-layer and multilayered nanocarriers with bioresponsive and cleavable layers, possessing different functional properties for improving the enhanced permeability and retention (EPR) effect, diffusion in the tumor microenvironment, cellular internalization and
  • entire cardiac output, but successful lung localization of nanocarriers depends upon NP interaction with the endothelial cells. Lung endothelial cells are an important target for drugs and gene delivery as they are involved in processes such as inflammation, vascular permeability, and tumor growth. Also
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Published 22 Feb 2023

Facile preparation of Au- and BODIPY-grafted lipid nanoparticles for synergized photothermal therapy

  • Yuran Wang,
  • Xudong Li,
  • Haijun Chen and
  • Yu Gao

Beilstein J. Nanotechnol. 2022, 13, 1432–1444, doi:10.3762/bjnano.13.118

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  • efficiency (Figure 1). AB-LNPs also showed good stability under physiological conditions and demonstrated laser-responsive release characteristics (Figure 3). BDP grafted on the AB-LNPs could generate greatly enhanced cellular uptake in cancer cells (Figure 4). Due to the enhanced permeability and retention
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Published 02 Dec 2022

Orally administered docetaxel-loaded chitosan-decorated cationic PLGA nanoparticles for intestinal tumors: formulation, comprehensive in vitro characterization, and release kinetics

  • Sedat Ünal,
  • Osman Doğan and
  • Yeşim Aktaş

Beilstein J. Nanotechnol. 2022, 13, 1393–1407, doi:10.3762/bjnano.13.115

Graphical Abstract
  • to be compatible with the Peppas–Sahlin model. Within the scope of in vitro cytotoxicity studies, the drug-loaded NPs showed significantly higher cytotoxicity than a DCX solution on the HT-29 colon cell line, and CS/DCX-PLGA showed the highest cytotoxicity (p < 0.05). According to the permeability
  • studies on the Caco-2 cell line, the CS/DCX-PLGA formulation increased permeability by 383% compared to free DCX (p < 0.05). In the light of all results, CS/DCX-PLGA NPs can offer a promising and innovative approach as an oral anticancer drug-loaded nanoformulation for intestinal tumors. Keywords
  • treatment of colon tumors, to provide higher drug concentration in the tumoral region in the colon, to reduce systemic side effects compared to parenteral administrations, and to alleviate colon cancer. In vitro characterization, permeability studies, in vitro cell culture studies, and comprehensive release
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Published 23 Nov 2022

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

  • Vishal Dutta,
  • Ankush Chauhan,
  • Ritesh Verma,
  • C. Gopalkrishnan and
  • Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109

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Published 11 Nov 2022

Microneedle-based ocular drug delivery systems – recent advances and challenges

  • Piotr Gadziński,
  • Anna Froelich,
  • Monika Wojtyłko,
  • Antoni Białek,
  • Julia Krysztofiak and
  • Tomasz Osmałek

Beilstein J. Nanotechnol. 2022, 13, 1167–1184, doi:10.3762/bjnano.13.98

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  • criteria. A schematic representation of five different MN types used to facilitate transdermal drug delivery. (A) Solid MNs for increasing the permeability of a drug formulation by creating microholes across the skin. (B) Coated MNs for rapid dissolution of the coated drug into the skin. (C) Dissolvable
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Published 24 Oct 2022

Recent advances in green carbon dots (2015–2022): synthesis, metal ion sensing, and biological applications

  • Aisha Kanwal,
  • Naheed Bibi,
  • Sajjad Hyder,
  • Arif Muhammad,
  • Hao Ren,
  • Jiangtao Liu and
  • Zhongli Lei

Beilstein J. Nanotechnol. 2022, 13, 1068–1107, doi:10.3762/bjnano.13.93

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Published 05 Oct 2022

Ideal Kerker scattering by homogeneous spheres: the role of gain or loss

  • Qingdong Yang,
  • Weijin Chen,
  • Yuntian Chen and
  • Wei Liu

Beilstein J. Nanotechnol. 2022, 13, 828–835, doi:10.3762/bjnano.13.73

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  • scattering; Mie particle; Introduction The original Kerker scattering of zero backward scattering was first proposed for homogeneous magnetic spheres with equal electric permittivity and magnetic permeability ε = μ [1]. This proposal had not attracted much attention for a long time, mainly due to the
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Published 24 Aug 2022

Design and characterization of polymeric microneedles containing extracts of Brazilian green propolis

  • Camila Felix Vecchi,
  • Rafaela Said dos Santos,
  • Jéssica Bassi da Silva and
  • Marcos Luciano Bruschi

Beilstein J. Nanotechnol. 2022, 13, 503–516, doi:10.3762/bjnano.13.42

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  • can encapsulate several types of nanocarriers, making it a unique system with different activities [11]. Solid MNs are used for pre-treatment of the skin. They serve only to create micropores, increasing permeability and facilitating the administration of the drug. The drug will be inserted over the
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Published 08 Jun 2022

Ethosomal (−)-epigallocatechin-3-gallate as a novel approach to enhance antioxidant, anti-collagenase and anti-elastase effects

  • Çiğdem Yücel,
  • Gökçe Şeker Karatoprak,
  • Sena Yalçıntaş and
  • Tuğba Eren Böncü

Beilstein J. Nanotechnol. 2022, 13, 491–502, doi:10.3762/bjnano.13.41

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  • cytotoxicity test revealed that the formulations and the EGCG solution at different concentrations were nontoxic. In terms of cell permeability, enzyme inhibition, and antioxidant activity, the ethosomal formulations yielded better results compared to the EGCG solution. It was observed that the formulations
  • these problems and enhance their effectiveness [13][14][15]. Upon application of various topical formulations, lipophilic drugs can easily penetrate into the skin, while hydrophilic drugs, such as EGCG, are limited in terms of penetration. The skin displays selective permeability for the penetration of
  • , selected from different ETHs exhibiting encapsulation efficiencies ranging from 40–64%, showed no significant changes in PS and polydispersity index (PDI) in a three-week stability study at room temperature. They also showed the highest in vitro permeability [33]. In order to increase the effectiveness of
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Published 31 May 2022

Tunable superconducting neurons for networks based on radial basis functions

  • Andrey E. Schegolev,
  • Nikolay V. Klenov,
  • Sergey V. Bakurskiy,
  • Igor I. Soloviev,
  • Mikhail Yu. Kupriyanov,
  • Maxim V. Tereshonok and
  • Anatoli S. Sidorenko

Beilstein J. Nanotechnol. 2022, 13, 444–454, doi:10.3762/bjnano.13.37

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  • [61][62]: where ρS is the resistivity of the superconducting material, μ0 is the vacuum permeability and ℏ is Planck’s constant. For instance, for a homogeneous niobium film, the estimate for the constant λ0 is around 100 nm, while experimentally measured values of the screening length λ at T = 4.2 K
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Published 18 May 2022

Photothermal ablation of murine melanomas by Fe3O4 nanoparticle clusters

  • Xue Wang,
  • Lili Xuan and
  • Ying Pan

Beilstein J. Nanotechnol. 2022, 13, 255–264, doi:10.3762/bjnano.13.20

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  • properties to absorb and locally convert near-infrared (NIR) light into heat [3]. Nanoscale agents tend to accumulate within tumor sites due to the enhanced permeability and retention (EPR) effect. Also, tumor cells are more sensitive to elevated temperatures than normal cells. Thus, PTT specifically ablates
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Published 22 Feb 2022

A comprehensive review on electrospun nanohybrid membranes for wastewater treatment

  • Senuri Kumarage,
  • Imalka Munaweera and
  • Nilwala Kottegoda

Beilstein J. Nanotechnol. 2022, 13, 137–159, doi:10.3762/bjnano.13.10

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  • alone [12]. In addition, ENHs have been utilized in energy applications as well. Zhang et al. developed a graphene oxide (GO)-based nanohybrid Nafion nanofiber as a proton-exchange membrane (PEM) for fuel cells to overcome low proton conductivity, high fuel permeability, and poor stability of
  • fabrication technique. Yet, it has been reported that the interconnected open pore structures and tailorable membrane thickness of electrospun membranes result in superior porosity and permeability compared to nonsolvent-induced phase separation (NIP) and thermally induced phase separation (TIP) membranes [49
  • -workers compared an electrospun PVDF/PMMA MF membrane with a conventionally cast membrane [57]. The electrospun membrane showed higher water permeability and high porosity compared to the cast membrane. Also, the electrospun membrane had a smoother surface, which led to less fouling. Most of the
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Published 31 Jan 2022

Measurement of polarization effects in dual-phase ceria-based oxygen permeation membranes using Kelvin probe force microscopy

  • Kerstin Neuhaus,
  • Christina Schmidt,
  • Liudmila Fischer,
  • Wilhelm Albert Meulenberg,
  • Ke Ran,
  • Joachim Mayer and
  • Stefan Baumann

Beilstein J. Nanotechnol. 2021, 12, 1380–1391, doi:10.3762/bjnano.12.102

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  • spinel or perovskite phase applicable in membrane reactors for partial oxidation reactions. Dual-phase membranes with FeCo2O4, or its iron-rich pendant Fe2CoO4, and Gd-doped ceria as an ion conductor have already been successfully applied as oxygen permeation membranes with high permeability in the
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Published 15 Dec 2021
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