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https://www.readbyqxmd.com/read/28629978/dual-roles-of-tpgs-based-microemulsion-for-tacrolimus-enhancing-the-percutaneous-delivery-and-anti-psoriatic-efficacy
#1
Tao WanJingtong Pan, Yueming Long, Kaiyue Yu, Yixuan Wang, Wenhui Pan, Wenyi Ruan, Mengyao Qin, Chuanbin Wu, Yuehong Xu
In this study, we demonstrate for the first time the dual roles of Tocopheryl Polyethylene Glycol 1000 Succinate (TPGS) based microemulsion (ME) for tacrolimus (TAC) to enhance TAC percutaneous delivery and anti-psoriatic efficacy. The ME formulation was developed and optimized based on pseudo-ternary phase diagrams combined with in vitro permeation. The result of Fourier transform infrared spectroscopy (FTIR) demonstrated that TAC was completely solubilized in the TPGS-ME. In vitro permeation studies showed that TPGS-ME enhanced TAC permeation through and into the skin, and the enhanced deposition of TAC in the normal or psoriatic skin was further confirmed in vivo...
June 16, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28629073/in-vitro-and-in-vivo-anti-inflammatory-properties-of-green-synthesized-silver-nanoparticles-using-viburnum-opulus-l-fruits-extract
#2
Bianca Moldovan, Luminita David, Adriana Vulcu, Liliana Olenic, Maria Perde-Schrepler, Eva Fischer-Fodor, Ioana Baldea, Simona Clichici, Gabriela Adriana Filip
A green, rapid and cost effective method for the bio-synthesis of silver nanoparticles (AgNPs), using polyphenols present in European cranberry bush fruit extracts was developed. The obtained AgNPs were characterized by ultra-violet visible spectroscopy (UV-VIS), Fourier transform - infrared spectroscopy (FT-IR), transmission electron microscopy (TEM) and X-ray diffraction patterns (XRD). The average size of the spherical AgNPs was found to be 25nm. The anti-inflammatory effect of the biomaterials was investigated, both in vitro (on HaCaT cell line, exposed to UVB radiation) and in vivo (on acute inflammation model in Wistar rats)...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28629001/biomimetic-electrospun-scaffolds-from-main-extracellular-matrix-components-for-skin-tissue-engineering-application-the-role-of-chondroitin-sulfate-and-sulfated-hyaluronan
#3
Sirsendu Bhowmick, Sandra Rother, Heike Zimmermann, Poh S Lee, Stephanie Moeller, Matthias Schnabelrauch, Veena Koul, Rainer Jordan, Vera Hintze, Dieter Scharnweber
Incorporation of bioactive components like glycosaminoglycans (GAGs) into tissue engineering scaffolds, is a promising approach towards developing new generation functional biomaterial. Here, we have designed electrospun nanofibrous scaffolds made of gelatin and different concentrations of chemically sulfated or non-sulfated hyaluronan (sHA or HA) and chondroitin sulfate (CS). Evenly distributed fiber morphology was observed with no differences between varying concentrations and types of GAGs. In vitro release kinetics revealed that GAGs release is driven by diffusion...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28628134/-effects-of-silver-nanoparticle-on-hemichannel-activation-and-anti-proliferation-in-hacat-cells
#4
D Yang, J H Xu, F R Deng, X B Guo
OBJECTIVE: To investigate the effect of silver nanoparticles (AgNPs) on hemichannel activity in human skin keratinocytes (HaCaT) and to explore the role of hemichannel in AgNP-induced anti-proliferative effect on HaCaT cells. METHODS: HaCaT cells were exposed to 0, 0.1, 0.2, 1.0, 5.0, 10.0, 15.0 and 20.0 μg/cm(2) of AgNPs for 24 h and cell viability was assessed by propidium iodide (PI) staining with flow cytometry. Hemichannel activity was examined by ethidium bromide (EB) uptake experiments in cells exposed to AgNPs with and without hemichannel inhibitor carbenoxolone (CBX)...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28627609/microrna-149-contributes-to-scarless-wound-healing-by-attenuating-inflammatory-response
#5
Hongxin Lang, Feng Zhao, Tao Zhang, Xiaoyu Liu, Zhe Wang, Rui Wang, Ping Shi, Xining Pang
A fibrotic or pathological scar is an undesired consequence of skin wound healing and may trigger a series of problems. An attenuated inflammatory response is a significant characteristic of fetal skin wound healing, which can contribute to the scarless healing of fetal skin. According to deep sequencing data, microRNA‑149 (miR‑149) expression was increased in mid-gestational compared with that in late‑gestational fetal skin keratinocytes. It was demonstrated that overexpression of miR‑149 in HaCaT cells can downregulate the expression of pro‑inflammatory cytokines interleukin (IL)‑1α, IL‑1β, and IL‑6 at basal levels and in inflammatory conditions...
June 15, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28627593/suppressive-effect-of-an-aqueous-extract-of-diospyros-kaki-calyx-on-dust-mite-extract-2-4-dinitrochlorobenzene-induced-atopic-dermatitis-like-skin-lesions
#6
Ju-Hee Yu, Meiling Jin, Young-Ae Choi, Na-Hee Jeong, Jeong-Sook Park, Tae-Yong Shin, Sang-Hyun Kim
Atopic dermatitis (AD) is a common chronic inflammatory skin disease, affecting 10-20% of individuals worldwide. Therefore, the discovery of drugs for treating AD is an attractive subject and important to human health. Diospyros kaki and Diospyros kaki (D. kaki) folium exert beneficial effects on allergic inflammation. However, the effect of D. kaki calyx on AD remains elusive. The present study evaluated the effects of an aqueous extract of D. kaki calyx (AEDKC) on AD-like skin lesions using mouse and keratinocyte models...
June 12, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28621502/amniotic-membrane-stimulates-cell-migration-by-modulating-transforming-growth-factor-%C3%AE-signaling
#7
Catalina Ruiz-Cañada, Ángel Bernabé-García, Sergio Liarte, Carmen Luisa Insausti, Diego Angosto, José María Moraleda, Gregorio Castellanos, Francisco José Nicolás
Keratinocyte migration is a mandatory aspect of wound-healing. We have previously shown that Amniotic Membrane (AM) applied to chronic wounds assists healing through a process resulting in overexpression of c-Jun at the wound's leading edge. Also, we have demonstrated that amniotic membrane modifies the genetic program induced by TGF-ß in chronic wounds. In this paper, we used a scratch assay of Mv1Lu and HaCaT cells to examine the influence of AM application on the underlying signaling during scratch closure...
June 16, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28618944/demethoxycurcumin-in-combination-with-ultraviolet-radiation-b-induces-apoptosis-through-the-mitochondrial-pathway-and-caspase-activation-in-a431-and-hacat-cells
#8
Yong Xin, Qian Huang, Pei Zhang, Wen Wen Guo, Long Zhen Zhang, Guan Jiang
Photodynamic therapy is widely used in the clinical treatment of tumors, especially skin cancers. It has been reported that the photosensitizer curcumin, in combination with ultraviolet radiation B, induces HaCaT cell apoptosis, and this effect may be due to the activation of caspase pathways. In this study, we examined the photodynamic effects of demethoxycurcumin, a more stable analogue of curcumin, to determine whether it could induce apoptosis in skin cancer cells. We investigated the effects of a combination of ultraviolet radiation B and demethoxycurcumin on apoptotic cell death in A431 and HaCaT cells and determined the molecular mechanism of action...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28617990/cell-specific-diversity-in-the-expression-and-organization-of-cytoplasmic-plaque-proteins-of-apical-junctions
#9
Ekaterina Vasileva, Sophie Sluysmans, Marie-Luce Bochaton-Piallat, Sandra Citi
Tight and adherens junctions play critical roles in the barrier, adhesion, and signaling functions of epithelial and endothelial cells. How the molecular organization of these junctions is tuned to the widely diverse physiological requirements of each tissue type is not well understood. Here, we address this question by examining the expression, localization, and interactions of major cytoplasmic plaque proteins of tight and adherens junctions in different cultured epithelial and endothelial cell lines. Immunoblotting and immunofluorescence analyses show that the expression profiles of cingulin, paracingulin, ZO-1, ZO-2, ZO-3, PLEKHA7, afadin, PDZD11, p120-catenin, and α-catenin, as well as the transmembrane junctional proteins occludin, E-cadherin, and VE-cadherin, are significantly diverse when comparing kidney cells (MDCK, mCCD), keratinocytes (HaCaT), lung carcinoma (A427, A549), and endothelium-derived cells (bEnd...
June 15, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28613371/effect-of-shenqin-biochemical-extract-on-hypoxia-inducible-factor-1%C3%AE-expression-in-ultraviolet-b-irradiated-hacat-cells
#10
X Chen, J Bai, Y Li, X-G Li, G-F Lv, H-Ch Zhang
Hypoxia-inducible factor-1α (HIF-1α) is considered the main transcriptional regulator of the hypoxia-specific cellular and developmental response. This study was performed to investigate the effect of Shenqin biochemical extract (SQBE) on HIF-1α expression in ultraviolet B (UVB)-irradiated HaCaT cells and the possible action mechanisms of SQBE against UVB-induced skin cancer. HaCaT cells in logarithmic growth phase were seeded in Dulbecco's modified Eagle's medium with 10% fetal bovine serum, and conventionally cultured at 37°C with 5% CO2...
May 31, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28610718/echinacea-purpurea-derived-alkylamides-exhibit-potent-anti-inflammatory-effects-and-alleviate-clinical-symptoms-of-atopic-eczema
#11
Attila Oláh, Judit Szabó-Papp, Michael Soeberdt, Ulrich Knie, Stephan Dähnhardt-Pfeiffer, Christoph Abels, Tamás Bíró
BACKGROUND: Atopic eczema (AE) is a chronic inflammatory and pruritic skin disease. There is still an unmet need for topical anti-inflammatory and anti-pruritic substances exhibiting an excellent safety profile. The endocannabinoid system is known to regulate various aspects of cutaneous barrier and immune functions, thus targeting it may be a valid approach for alleviating the symptoms of AE. OBJECTIVE: To assess the putative efficacy of Echinacea purpurea-derived alkylamides (Ec...
May 27, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28608226/blocking-rhoa-rock-inhibits-the-pathogenesis-of-pemphigus-vulgaris-by-suppressing-oxidative-stress-and-apoptosis-through-tak1-nod2-mediated-nf-%C3%AE%C2%BAb-pathway
#12
Junqin Liang, Xuewen Zeng, Yilinuer Halifu, Wenjing Chen, Fengxia Hu, Peng Wang, Huan Zhang, Xiaojing Kang
Oxidative stress and apoptosis play critical roles in pemphigus vulgaris (PV). The main aim of the present study was to investigate the effects of RhoA/ROCK signaling on UVB-induced oxidative damage, and to delineate the molecular mechanisms involved in the UVB-mediated inflammatory and apoptotic response. In HaCaT cells, we observed that blockage of RhoA/ROCK signaling with the inhibitor CT04 or Y27632 greatly inhibited the UVB-mediated increase in intracellular reactive oxygen species (ROS). Additionally, inhibition of RhoA/ROCK signaling reduced UVB-induced apoptosis, as exemplified by a reduction in DNA fragmentation, and also elevated anti-apoptotic Bcl-2 protein, concomitant with reduced levels of pro-apoptotic protein Bax, caspase-3 cleavage and decreased PARP-1 protein...
June 12, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28603419/in-situ-preparation-of-water-soluble-ginsenoside-rh2-entrapped-bovine-serum-albumin-nanoparticles-in-vitro-cytocompatibility-studies
#13
Priyanka Singh, Yeon Ju Kim, Hina Singh, Sungeun Ahn, Verónica Castro-Aceituno, Deok Chun Yang
The present study investigates a simple and convenient one-step procedure for the preparation of bovine serum albumin (BSA)-Rh2 nanoparticles (NPs) at room temperature. In this work, ginsenoside Rh2 was entrapped within the BSA protein to form BSA-Rh2 NPs to enhance the aqueous solubility, stability, and therapeutic efficacy of Rh2. The physiochemical characterization by high-performance liquid chromatography, nuclear magnetic resonance, Fourier transform infrared spectroscopy, field emission transmission electron microscopy, dynamic light scattering, and thermogravimetric analysis confirmed that the prepared BSA-Rh2 NPs were spherical, highly monodispersed, and stable in aqueous systems...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28602757/achillea-asiatica-extract-and-its-active-compounds-induce-cutaneous-wound-healing
#14
Banzragch Dorjsembe, Hee Ju Lee, Myungsuk Kim, Batsuren Dulamjav, Tunsag Jigjid, Chu Won Nho
ETHNOPHARMACOLOGICAL RELEVANCE: Achillea asiatica Serg. is a perennial herb belonging to the Asteraceae family that has long been traditionally used to treat acute intestinal and stomach inflammation, persistent fever, ulcers, wounds, and rheumatism. AIM OF THE STUDY: We investigated the effect of A. asiatica extract (AAE) on cutaneous wound healing. MATERIALS AND METHODS: To assess the effect of AAE on wounds, an incisional Sprague-Dawley (SD) rat model was topically treated with AAE for 2 weeks...
June 8, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28601597/in-vitro-studies-on-cytotoxicity-of-delaminated-ti3c2-mxene
#15
A M Jastrzębska, A Szuplewska, T Wojciechowski, M Chudy, W Ziemkowska, L Chlubny, A Rozmysłowska, A Olszyna
MXenes are a novel family of 2D materials, the biological activity of which has been largely unexplored. The present study, for the first time, shows some aspects of the in vitro toxicity of 2D sheets of Ti3C2 MXene. The Ti3AlC2 MAX phase was used in an expansion and delamination process to obtain Ti3C2 material in the form of 2D sheets. The obtained 2D material was characterized using SEM, TEM, DLS, XPS, and zeta potential. The biological activity of the MXene was determined on two normal (MRC-5 and HaCaT) and two cancerous (A549 and A375) cell lines...
June 6, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28601354/studies-on-wound-healing-potential-of-polyherbal-formulation-using-in%C3%A2-vitro-and-in%C3%A2-vivo-assays
#16
Yogesh P Talekar, Kishori G Apte, Shubhangi V Paygude, Prasad R Tondare, Pradeep B Parab
BACKGROUND: The use of herbal plant extracts in wound healing is known through decades, but it is necessary to provide scientific data through reverse pharmacology. OBJECTIVE: The aim of the present study is to find the mechanism behind the healing of wounds using in vitro and in vivo assays. METHODS AND MATERIAL: The study was designed to determine proliferation and mobilization of fibroblast and keratinocytes at the site of injury, angiogenesis at the site of healing and reduction in oxidative stress while healing...
June 7, 2017: Journal of Ayurveda and Integrative Medicine
https://www.readbyqxmd.com/read/28598304/antibacterial-activity-of-diacetylcurcumin-against-staphylococcus-aureus-results-in-decreased-biofilm-and-cellular-adhesion
#17
Janaina de Cássia Orlandi Sardi, Carlos Roberto Polaquini, Irlan Almeida Freires, Livia Câmara de Carvalho Galvão, Josy Goldoni Lazarini, Guilherme Silva Torrezan, Luis Octávio Regasini, Pedro Luiz Rosalen
PURPOSE: Staphylococcus aureus infections have contributed to the global healthcare burden, particularly with regard to hospital-acquired meticillin-resistant S. aureus (MRSA) infections. METHODOLOGY: This study describes the antibacterial activity of diacetylcurcumin (DAC) against meticillin-susceptible S. aureus/MRSA biofilm formation, survival, metabolic activity and structure; its ability to prevent bacterial adhesion to human cells; and toxicity in Galleria mellonella larvae...
June 9, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28598022/skin-resistance-to-uvb-induced-oxidative-stress-and-hyperpigmentation-by-the-topical-use-of-lactobacillus-helveticus-ns8-fermented-milk-supernatant
#18
Jingjing Rong, Chuang Shan, Shuzhan Liu, Houfeng Zheng, Chen Liu, Ming Liu, Feng Jin, Li Wang
AIMS: Here, we investigated the preventive properties of the supernatant of Lactobacillus helveticus NS8-fermented milk (NS8-FS) against UV light-induced skin oxidative damage and hyperpigmentation. METHODS AND RESULTS: NS8-FS exhibited significant radical scavenging activity in tests with ABST(+) and DPPH scavenging methods, and as well strongly inhibited 3-morpholinosydnonimine (Sin-1) induced ROS generation in HaCat keratinocytes. Unexpectedly, NS8-FS was found to inhibit melanin production in B16F10 melanoma cells, and to exhibit inhibitory effects both to the enzymatic activity of tyrosinase and the expression of proteins required for melanin synthesis...
June 9, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28597545/cimifugin-suppresses-allergic-inflammation-by-reducing-epithelial-derived-initiative-key-factors-via-regulating-tight-junctions
#19
Xiaoyu Wang, Xiaoyan Jiang, Xi Yu, Hailiang Liu, Yu Tao, Guorong Jiang, Min Hong
Cimifugin is a bioactive component of Saposhnikovia divaricata, a Chinese herb for treating allergy. Our previous studies demonstrated that cimifugin inhibited allergic inflammation efficiently. This study aims to determine the mechanism of cimifugin on epithelial cells in allergic inflammation. Mice were sensitized and challenged with FITC to establish type 2 atopic dermatitis (AD) model. The initial stage of AD model, in which mice were just sensitized with FITC, was established in vivo and immortalized human epidermal (HaCaT) cells were utilized in vitro...
June 9, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28595984/cell-cycle-pathway-dysregulation-in-human-keratinocytes-during-chronic-exposure-to-low-arsenite
#20
Laila Al-Eryani, Sabine Waigel, Venkatakrishna Jala, Samantha F Jenkins, J Christopher States
BACKGROUND: Arsenic is naturally prevalent in the earth's crust and widely distributed in air and water. Chronic low arsenic exposure is associated with several cancers in vivo, including skin cancer, and with transformation in vitro of cell lines including immortalized human keratinocytes (HaCaT). Arsenic also is associated with cell cycle dysregulation at different exposure levels in multiple cell lines. In this work, we analyzed gene expression in HaCaT cells to gain an understanding of gene expression changes contributing to transformation at an early time point...
June 11, 2017: Toxicology and Applied Pharmacology
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