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https://www.readbyqxmd.com/read/29689489/evaluation-of-upf-and-antibacterial-activity-of-cotton-fabric-coated-with-colloidal-seaweed-extract-functionalized-silver-nanoparticles
#1
S Rajaboopathi, S Thambidurai
In the present study, green synthesis of silver nanoparticles (AgNPs) functionalized with seaweed (Padina gymnospora) extract was investigated. Thus synthesized AgNPs were coated on cotton fabric by pad try-cure method using citric acid as a cross linking agent. The chemical linkage of colloidal AgNPs onto the cellulosic structure are characterized and confirmed by FTIR, SEM, EDX and AFM analysis. The optical, crystalline and morphological features of the functionalized AgNPs were confirmed by UV-Visible, X-ray diffraction and TEM analysis...
April 18, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29679855/rutin-and-rutin-conjugated-gold-nanoparticles-ameliorate-collagen-induced-arthritis-in-rats-through-inhibition-of-nf-%C3%AE%C2%BAb-and-inos-activation
#2
Anum Gul, Bimal Kunwar, Maryam Mazhar, Shaheen Faizi, Dania Ahmed, Muhammad Raza Shah, Shabana U Simjee
Numerous studies have suggested that nuclear factor-κB (NF-κB) and inducible nitric oxide synthase (iNOS) are important mediators of inflammatory response in human and animal models of arthritis. Besides, oxidative stress markers, nitric oxide (NO) and peroxide (PO) are also major contributors in the pathogenesis of rheumatoid arthritis (RA). Over expression of these inflammatory mediators leads to the extracellular matrix degradation, and excessive cartilage and bone resorption, ultimately leading to the irreversible damage to joints...
April 18, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29679159/notch-1-sirna-and-methotrexate-towards-a-multifunctional-approach-in-rhematoid-arthritis-management-a-nanomedicine-approach
#3
Guang Zhao, Haifei Zhang
PURPOSE: Rheumatoid arthritis (RA) is a chronic inflammatory disease and Notch pathway plays a pivotal role in synoviocytes involved in progression of RA. METHODS: Herein, we have designed a self-assembled polymeric micelles based on polycaprolactone-polyethylene glycol (PCL-PEG) and polyethylenimine-polyethylene glycol (PEI-PEG) was prepared and loaded with methotrexate and Notch-1 siRNA for the effective treatment of rheumatoid arthritis. RESULTS: The MTX/siRNA-loaded polymeric micelles (siM-PM) showed appreciable cellular uptake in Raw264...
April 20, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29670349/fabrication-of-a-triptolide-loaded-and-poly-%C3%AE-glutamic-acid-based-amphiphilic-nanoparticle-for-the-treatment-of-rheumatoid-arthritis
#4
Li Zhang, Junli Chang, Yongjian Zhao, Hao Xu, Tengteng Wang, Qiang Li, Lianping Xing, Jing Huang, Yongjun Wang, Qianqian Liang
Triptolide (TP) exhibits immunosuppressive, cartilage-protective and anti-inflammatory effects in rheumatoid arthritis. However, the toxicity of TP limits its widespread use. To decrease the toxic effects, we developed a novel nano-drug carrier system containing TP using poly-γ-glutamic acid-grafted di-tert-butyl L-aspartate hydrochloride (PAT). PAT had an average diameter of 79±18 nm, a narrow polydispersity index (0.18), a strong zeta potential (-32 mV) and a high drug encapsulation efficiency (EE1 =48...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29608265/facile-synthesis-of-pt-functionalized-meso-macroporous-sno-2-hollow-spheres-through-in-situ-templating-with-sio-2-for-h-2-s-sensors
#5
Peresi Majura Bulemo, Hee-Jin Cho, Dong-Ha Kim, Il-Doo Kim
Whereas single-nozzle electrospraying seems a versatile technique in synthesis of spherical semiconducting metal oxide (SMO) structures, the synthesized structures find limited use in gas-sensing applications due to their thick and dense morphology, which minimizes accessibility of their inner surfaces. Herein, unprecedented spherical SiO2 @SnO2 core-shell structures are synthesized upon calcination of single-nozzle as-electrosprayed spheres (SPs) containing tin (Sn) and silicon (Si) precursors. Subsequent etching of SiO2 in NaOH (pH 12) affords meso/macroporous SnO2 hollow spheres (HSPs) with short diffusion length (31...
April 2, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29518539/intravenous-administration-of-retinoic-acid-loaded-polymeric-nanoparticles-prevents-ischemic-injury-in-the-immature-brain
#6
Marta Machado-Pereira, Tiago Santos, Lino Ferreira, Liliana Bernardino, Raquel Ferreira
Perinatal stroke is often difficult to diagnose and an established treatment has not yet been validated, except for symptomatic measures. Herein, we propose to test the neuroprotective potential of the intravenous injection of retinoic acid-loaded nanoparticles (RA-NP) upon ischemic injury to the immature brain. The role of RA-NP on endothelial cells and organotypic slice cultures exposed to oxygen and glucose deprivation was assessed by evaluating markers pertaining to survival, proliferation, oxidative stress (NO, ROS), neuronal damage (enolase), vascular oxidation (p47phox) and microglia activation (CD68)...
March 5, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29516758/targeted-delivery-of-hyaluronic-acid-coated-solid-lipid-nanoparticles-for-rheumatoid-arthritis-therapy
#7
Meiling Zhou, Jierong Hou, Zhirong Zhong, Na Hao, Yan Lin, Chunhong Li
Rheumatoid arthritis (RA) is a chronic, systemic inflammatory disease. Long-term, high-dose glucocorticoid therapy can be used to treat the disease, but the fact that the drug distributes systemically can give rise to severe adverse effects. Here we develop a targeted system for treating RA in which the glucocorticoid prednisolone (PD) is encapsulated within solid lipid nanoparticles (SLNs) coated with hyaluronic acid (HA), giving rise to HA-SLNs/PD. HA binds to hyaluronic receptor CD44, which is over-expressed on the surface of synovial lymphocytes, macrophages and fibroblasts in inflamed joints in RA...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29495627/rough-titanium-oxide-coating-prepared-by-micro-arc-oxidation-causes-down-regulation-of-htert-expression-molecular-presentation-and-cytokine-secretion-in-tumor-jurkat-t-cells
#8
Igor Khlusov, Larisa Litvinova, Valeria Shupletsova, Olga Khaziakhmatova, Elena Melashchenko, Kristina Yurova, Vladimir Leitsin, Marina Khlusova, Vladimir Pichugin, Yurii Sharkeev
The response of the human Jurkat T cell leukemia-derived cell line (Jurkat T cells) after 24 h of in vitro exposure to a titanium substrate (12 × 12 × 1 mm³) with a bilateral rough ( Ra = 2.2-3.7 μm) titanium oxide coating (rTOC) applied using the micro-arc method in a 20% orthophosphoric acid solution was studied. A 1.5-fold down-regulation of hTERT mRNA expression and decreases in CD3, CD4, CD8, and CD95 presentation and IL-4 and TNFα secretion were observed. Jurkat T cell inactivation was not correlated with the generation of intracellular reactive oxygen species (ROS) and was not mediated by TiO₂ nanoparticles with a diameter of 14 ± 8 nm at doses of 1 mg/L or 10 mg/L...
February 28, 2018: Materials
https://www.readbyqxmd.com/read/29452946/time-responsive-osteogenic-niche-of-stem-cells-a-sequentially-triggered-dual-peptide-loaded-alginate-hybrid-system-for-promoting-cell-activity-and-osteo-differentiation
#9
Zuyuan Luo, Siqi Zhang, Jijia Pan, Rui Shi, Hao Liu, Yalin Lyu, Xiao Han, Yan Li, Yue Yang, Zhixiu Xu, Yi Sui, En Luo, Yuanyuan Zhang, Shicheng Wei
The efficacy of stem cell-based bone tissue engineering has been hampered by cell death and limited fate control. A smart cell culture system with the capability of sequentially delivering multiple factors in specific growth stages, like the mechanism of the natural extracellular matrix modulating tissue formation, is attractive for enhancing cell activity and controlling cell fate. Here, a bone forming peptide-1 (BFP-1)-laden mesoporous silica nanoparticles (pep@MSNs) incorporated adhesion peptide, containing the arginine-glycine-aspartic acid (RGD) domain, modified alginate hydrogel (RA) system (pep@MSNs-RA) was developed to promote the activity and stimulate osteo-differentiation of human mesenchymal stem cells (hMSCs) in sequence...
February 10, 2018: Biomaterials
https://www.readbyqxmd.com/read/29442970/fabrication-and-characterizations-of-ethanol-sensor-based-on-cuo-nanoparticles
#10
Yas Al-Hadeethi, Ahmad Umar, Rajesh Kumar, Saleh H Al-Heniti, Bahaaudin M Raffah
In this paper, we report the synthesis, characterization and ethanol sensing applications of CuO nanoparticles. The CuO nanoparticles were prepared by a facile, low-temperature hydrothermal method and characterized in detail in terms of their structural, morphological, compositional and crystalline properties, through different characterization techniques including X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) attached with energy dispersive spectroscopy (EDS), and Fourier transform infrared (FTIR) spectroscopy...
April 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29438340/encapsulation-of-multiple-microalgal-cells-via-a-combination-of-biomimetic-mineralization-and-lbl-coating
#11
Minjeong Kim, Myoung Gil Choi, Ho Won Ra, Seung Bin Park, Yong-Joo Kim, Kyubock Lee
The encapsulation of living cells is appealing for its various applications to cell-based sensors, bioreactors, biocatalysts, and bioenergy. In this work, we introduce the encapsulation of multiple microalgal cells in hollow polymer shells of rhombohedral shape by the following sequential processes: embedding of microalgae in CaCO₃ crystals; layer-by-layer (LbL) coating of polyelectrolytes; and removal of sacrificial crystals. The microcapsule size was controlled by the alteration of CaCO₃ crystal size, which is dependent on CaCl₂/Na₂CO₃ concentration...
February 13, 2018: Materials
https://www.readbyqxmd.com/read/29381085/gum-acacia-stabilized-silver-nanoparticles-based-nano-cargo-for-enhanced-anti-arthritic-potentials-of-hesperidin-in-adjuvant-induced-arthritic-rats
#12
Komal Rao, Sabahat Aziz, Talat Roome, Anam Razzak, Bushra Sikandar, Khawar Saeed Jamali, Muhammad Imran, Tooba Jabri, Muhammad Raza Shah
Nanomedicines anticipate drug delivery to inflamed tissues in rheumatoid arthritis (RA) with greater efficacy and lesser side effects. This study investigates the anti-arthritic potentials of Hesperidin (HP) loaded in gum acacia (GA) stabilized green silver nanoparticles (AgNPs). Synthesized GA-AgNPs were characterized through UV-vis spectrophotometer, zetasizer and atomic force microscope (AFM). The HP and its loaded NPs were tested for RA in Complete Freund's adjuvant (CFA) induced arthritis model. GA-AgNPs were found in nano-range size with negative charge, spherical shape and loaded increased HP amount...
January 30, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29376442/drug-delivery-targets-and-systems-for-targeted-treatment-of-rheumatoid-arthritis
#13
Xun Feng, Yang Chen
Rheumatoid arthritis (RA) is an immune-mediated inflammatory disease that selectively attacks human joints. The common non-targeted treatment approaches lead to obvious side effect and systemtic complication for RA patients. Therefore, targeted drug delivery for treatment of RA has gained much attetntion in the past few years. In this paper, we reviewed the potential targets (folate receptor, angiogenesis, matrix metalloproteases, selectins, vasoactive intestinal peptide receptor andFc-γ receptor) that could be utilised to facilitate the specific delivery of drugs to the inflammed synovium and also presented different drug delivery systems for targeting RA, including the liposomes, various types of nanoparticles, polymeric micelles and the macromolecular prodrugs...
February 6, 2018: Journal of Drug Targeting
https://www.readbyqxmd.com/read/29361749/affinity-purification-and-comparative-biosensor-analysis-of-citrulline-peptide-specific-antibodies-in-rheumatoid-arthritis
#14
Eszter Szarka, Petra Aradi, Krisztina Huber, Judit Pozsgay, Lili Végh, Anna Magyar, Gergő Gyulai, György Nagy, Bernadette Rojkovich, Éva Kiss, Ferenc Hudecz, Gabriella Sármay
BACKGROUND: In rheumatoid arthritis (RA), anti-citrullinated protein/peptide antibodies (ACPAs) are responsible for disease onset and progression, however, our knowledge is limited on ligand binding affinities of autoantibodies with different citrulline-peptide specificity. METHODS: Citrulline-peptide-specific ACPA IgGs were affinity purified and tested by ELISA. Binding affinities of ACPA IgGs and serum antibodies were compared by surface plasmon resonance (SPR) analysis...
January 22, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29342965/lipid-based-nanoparticles-as-a-potential-delivery-approach-in-the-treatment-of-rheumatoid-arthritis
#15
REVIEW
Shih-Yi Chuang, Chih-Hung Lin, Tse-Hung Huang, Jia-You Fang
Rheumatoid arthritis (RA), a chronic and joint-related autoimmune disease, results in immune dysfunction and destruction of joints and cartilages. Small molecules and biological therapies have been applied in a wide variety of inflammatory disorders, but their utility as a therapeutic agent is limited by poor absorption, rapid metabolism, and serious side effects. To improve these limitations, nanoparticles, which are capable of encapsulating and protecting drugs from degradation before they reach the target site in vivo, may serve as drug delivery systems...
January 15, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29324391/sirna-mediated-c-rel-knockdown-ameliorates-collagen-induced-arthritis-in-mice
#16
Tingting Fan, Fuhua Zhong, Ruiling Liu, Youhai H Chen, Ting Wang, Qingguo Ruan
Previous studies have shown that inflammatory mediators involved in the development of rheumatoid arthritis (RA) are regulated by the Rel/nuclear factor-κB (Rel/NF-κB) transcription factor family. c-Rel, a member of the Rel/NF-κB family that is preferentially expressed by immune cells, is a risk factor for several inflammatory diseases including RA. In the current study, we investigated whether targeting c-Rel can be used to treat collagen-induced arthritis, an animal model for RA. c-Rel specific siRNA (siRel) delivered by nanoparticles was used to knockdown the expression of c-Rel...
March 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29214662/airborne-particulate-concentration-during-laser-hair-removal-a-comparison-between-cold-sapphire-with-aqueous-gel-and-cryogen-skin-cooling
#17
Edward V Ross, Gary S Chuang, Arisa E Ortiz, Scott A Davenport
BACKGROUND: High concentrations of sub-micron nanoparticles have been shown to be released during laser hair removal (LHR) procedures. These emissions pose a potential biohazard to healthcare workers that have prolonged exposure to LHR plume. OBJECTIVE: We sought to demonstrate that cold sapphire skin cooling done in contact mode might suppress plume dispersion during LHR. METHODS: A total of 11 patients were recruited for laser hair removal...
December 7, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29199587/liposome-based-nanomedicine-therapeutics-for-rheumatoid-arthritis
#18
Mahfoozur Rahman, Sarwar Beg, Firoz Anwar, Vikas Kumar, Ruhi Ubale, Richard T Addo, Raisuddin Ali, Sohail Akhter
Rheumatoid arthritis (RA) is a very painful severe autoimmune disease with complex pathology characterized by progressive chronic inflammation, and devastation of the synovium, cartilage, and other joint-associated structures. Significant advances in research in the area of pathophysiology, diagnosis, drug development, and targeted delivery have led to improved RA therapy and better patient compliance. Targeted drug delivery using liposomal nanomedicines significantly alleviate the challenges with conventional anti-RA medications such as off-target effects, short biological half-life, poor bioavailability, high dose-related toxicity, etc...
2017: Critical Reviews in Therapeutic Drug Carrier Systems
https://www.readbyqxmd.com/read/29138531/anti-inflammatory-strategy-for-m2-microglial-polarization-using-retinoic-acid-loaded-nanoparticles
#19
Marta Machado-Pereira, Tiago Santos, Lino Ferreira, Liliana Bernardino, Raquel Ferreira
Inflammatory mechanisms triggered by microglial cells are involved in the pathophysiology of several brain disorders, hindering repair. Herein, we propose the use of retinoic acid-loaded polymeric nanoparticles (RA-NP) as a means to modulate microglia response towards an anti-inflammatory and neuroprotective phenotype (M2). RA-NP were first confirmed to be internalized by N9 microglial cells; nanoparticles did not affect cell survival at concentrations below 100  μ g/mL. Then, immunocytochemical studies were performed to assess the expression of pro- and anti-inflammatory mediators...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29109776/sequential-delivery-of-cyclopeptide-ra-v-and-doxorubicin-for-combination-therapy-on-resistant-tumor-and-in-situ-monitoring-of-cytochrome-c-release
#20
Huachao Chen, Yurong Wang, Yongrong Yao, Shenglin Qiao, Hao Wang, Ninghua Tan
A programmed drug delivery system that can achieve sequential release of multiple therapeutics under different stimulus holds great promise to enhance the treatment efficacy and overcome multi-drug resistance (MDR) in tumor. Herein, multi-organelle-targeted and pH/ cytochrome c (Cyt c) dual-responsive nanoparticles were designed for combination therapy on resistant tumor. In this system (designated DGLipo NPs), doxorubicin (Dox) was intercalated into the DNA duplex containing a Cyt c aptamer, which subsequently loaded in the dendrigraftpoly-L-lysines (DGL) cores of DGLipo NPs, while cyclopeptide RA-V was doped into the pH-sensitive liposomal shells...
2017: Theranostics
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