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https://www.readbyqxmd.com/read/28110038/enhancement-of-magnetofection-efficiency-using-chitosan-coated-superparamagnetic-iron-oxide-nanoparticles-and-calf-thymus-dna
#1
Z Sohrabijam, M Saeidifar, A Zamanian
Superparamagnetic iron oxide nanoparticles (MNPs) were prepared and coated with chitosan (CS). The chitosan-magnetic iron oxide nanoparticles (CS-MNPs) were characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), vibrating sample magnetometry (VSM), and the morphology of the particles was studied by transmission electron microscopy (TEM). Our findings show that the magnetic particles were monodisperse (10nm mean diameter) and exhibited superparamagnetic behavior. The interaction between the particles and calf-thymus DNA (DNA) in physiological buffer was studied with UV-vis, fluorescence and circular dichroism spectroscopy and zeta potential...
January 17, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28109001/polygonum-multiflorum-radix-extract-protects-human-foreskin-melanocytes-from-oxidative-stress-in-vitro-and-potentiates-hair-follicle-pigmentation-ex-vivo
#2
Peggy Sextius, Richard Betts, Ishak Benkhalifa, Stéphane Commo, Joan Eilstein, Marco Massironi, Ping Wang, Jean-Francois Michelet, Jie Qiu, Xuezhu Tan, Severine Jeulin
OBJECTIVE: To examine the ability of an extract from traditional Chinese medicine, Polygonum multiflorum Radix, to protect melanocyte viability from oxidative stress, a key mechanism in the initiation and progression of hair greying. METHODS: To assess the antioxidant capacity of Polygonum multiflorum Radix extract, primary human foreskin melanocytes were treated with a commercially available Polygonum multiflorum Radix extract added to culture medium and exposed to hydrogen peroxide (H2 O2 ), using intracellular reactive oxygen species concentrations and glutathione/protein ratios as endpoints...
January 20, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28107750/effect-of-clinically-approved-hdac-inhibitors-on-plasmodium-leishmania-and-schistosoma-parasite-growth
#3
Ming Jang Chua, Megan S J Arnold, Weijun Xu, Julien Lancelot, Suzanne Lamotte, Gerald F Späth, Eric Prina, Raymond J Pierce, David P Fairlie, Tina S Skinner-Adams, Katherine T Andrews
Malaria, schistosomiasis and leishmaniases are among the most prevalent tropical parasitic diseases and each requires new innovative treatments. Targeting essential parasite pathways, such as those that regulate gene expression and cell cycle progression, is a key strategy for discovering new drug leads. In this study, four clinically approved anti-cancer drugs (Vorinostat, Belinostat, Panobinostat and Romidepsin) that target histone/lysine deacetylase enzymes were examined for in vitro activity against Plasmodium knowlesi, Schistosoma mansoni, Leishmania amazonensis and L...
December 23, 2016: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/28106913/efficacy-of-50%C3%A2-hz-electromagnetic-fields-on-human-epidermal-stem-cell-transplantation-seeded-in-collagen-sponge-scaffolds-for-wound-healing-in-a-murine-model
#4
Wen-Fang Bai, Wei-Cheng Xu, Hong-Xiang Zhu, Hong Huang, Bo Wu, Ming-Sheng Zhang
To explore the possible efficacy of electromagnetic fields (EMF) for skin tissue engineering, effects of EMF exposure on epidermal stem cells (ESC) seeded in collagen sponge scaffolds for wound healing in a murine model were investigated. The wound models of a full-thickness defect established with 36 7 ∼ 8-week-old nude mice were randomly divided into three groups: a control group, an ESC-only group, and an ESC with EMF exposure group (frequency of 50 Hz, magnetic induction of 5 mT, 60 min per day for 20 days)...
January 20, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28106541/cell-membrane-and-intracellular-expression-of-toll-like-receptor-9-tlr9-in-colorectal-cancer-and-breast-cancer-cell-lines
#5
Shadab Shahriari, Somayeh Rezaeifard, Hamid Reza Moghimi, Mohammad Reza Khorramizadeh, Zahra Faghih
BACKGROUND: Toll-like receptor 9 (TLR9) is a DNA receptor of innate immune system which plays a pivotal role in inflammatory response. Recent evidence reveals over-expression and functionality of TLR9 in a wide variety of cancer cells and its contribution to tumor cell proliferation and survival. OBJECTIVE: In this study, we assessed the aberrant cell surface expression of TLR9 in cancer using cell-lines model. METHODS: Three breast cancer cell-lines (MDA-MB-231, MCF7 and SKBR3) and five colorectal adenocarcinoma cell-lines (HT29, HT29/219, SW480, SW48 and SW1116) in addition to one primary foreskin isolated fibroblast cell were analyzed for cell surface and intracellular expression of TLR9 by flow cytometry method...
January 13, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28103575/piwil2-transfected-human-fibroblasts-are-cancer-stem-cell-like-and-genetically-unstable
#6
Deying Zhang, Xin Wu, Xing Liu, Chunhong Cai, Guangping Zeng, Jan Rohozinski, Yuanyuan Zhang, Guanghui Wei, Dawei He
Uncontrolled cell proliferation and inhibition of apoptosis are considered to be vital for cancer initiation, maintenance, infiltration, metastasis and recurrence after anti-cancer therapy. Here we report the generation of a novel cell line by reprogramming child foreskin fibroblast with the full length apoptosis inhibitor gene PIWIL2. The fibroblasts transfected with PIWIL2 expressed the stem cell markers OCT-4, NANOG, SOX-2, KLF-4 and C-MYC; endoderm marker AFP and GATA6; mesoderm markers ACTA2 and BRACHYURY; and ectoderm markers NESTIN and TUBB3...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28088311/prevalence-of-preoperative-penile-abnormalities-among-voluntary-male-medical-circumcision-patients-in-swaziland
#7
Anthony R Oddo, Elizabeth Ruedrich, Christopher Zust, Lindsey Marugg, Echo VanderWal, Harry VanderWal, Rebekah Sartori, Ronald Markert, Mary C McCarthy
BACKGROUND: Circumcision has been found to be an effective strategy for lowering the transmission of HIV in Africa. The Luke Commission, a mobile hospital outreach program, has used this information to decrease the rate of HIV in Swaziland by performing voluntary male medical circumcisions throughout the country. During many of these circumcisions, genital medical conditions and penile abnormalities are simultaneously discovered and corrected. PURPOSE: The goal of our study was to evaluate the prevalence of penile abnormalities discovered and treated during voluntary male medical circumcisions performed by The Luke Commission (TLC) throughout rural Swaziland...
January 3, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28086811/study-of-the-microrna-expression-profile-of-foreskin-derived-mesenchymal-stromal-cells-following-inflammation-priming
#8
Hussein Fayyad-Kazan, Mohammad Fayyad-Kazan, Bassam Badran, Dominique Bron, Laurence Lagneaux, Mehdi Najar
BACKGROUND: Due to their self-renewal capacity, multi-lineage potential, and immunomodulatory properties, mesenchymal stromal cells (MSCs) are an attractive tool for different therapeutic strategies. Foreskin (FSK), considered as a biological waste material, has already been shown to be a valuable source of MSCs. Besides their typical fibroblast like morphology and International Society for cellular Therapy compliant phenotype, foreskin-MSCs (FSK-MSCs) are clonogenic, and highly proliferative cells with multi-lineage and strong immunomodulatory capacities...
January 13, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28078807/traumatized-muscle-derived-multipotent-progenitor-cells-recruit-endothelial-cells-through-vascular-endothelial-growth-factor-a-action
#9
Heidi R H Supanc, Shannon Gorman, Rocky S Tuan
Traumatized muscle, such as that debrided from blast injury sites, is considered a promising and convenient tissue source for multipotent progenitor cells (MPCs), a population of adult mesenchymal stem cell (MSC)-like cells. The present study aimed to assess the regenerative therapeutic potential of human traumatized muscle-derived MPCs, e.g., for injury repair in the blast-traumatized extremity, by comparing their pro-angiogenic potential in vitro and capillary recruitment activity in vivo to those of MSCs isolated from human bone marrow, a widely-used tissue source...
January 12, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28051050/our-experience-of-proximal-hypospadias-repair-using-the-cloutier-bracka-technique-at-the-gynaeco-obstetric-and-paediatric-hospital-yaounde-cameroon
#10
Mouafo Tambo Faustin Felicien, A S Nwaha Makon, C Kamadjou, G Fossi, C Le Coultre, O G Andze, M A Sosso, P Y Mure
BACKGROUND: In parts of Africa, routine circumcision is practised and sometimes even on children with hypospadias. The lack of preputial foreskin renders urethroplasty more difficult and often requires to use of a mucosal graft as described by Bracka. OBJECTIVE: The authors describe their experience of hypospadias repair using Bracka's technique. MATERIALS AND METHODS: Over a period of 5 years, 100 cases of proximal hypospadias were operated in our institution...
October 2016: African Journal of Paediatric Surgery: AJPS
https://www.readbyqxmd.com/read/28049151/modulation-of-microrna-mrna-target-pairs-by-human-papillomavirus-16-oncoproteins
#11
Mallory E Harden, Nripesh Prasad, Anthony Griffiths, Karl Munger
: The E6 and E7 proteins are the major oncogenic drivers encoded by high-risk human papillomaviruses (HPVs). While many aspects of the transforming activities of these proteins have been extensively studied, there are fewer studies that have investigated how HPV E6/E7 expression affects the expression of cellular noncoding RNAs. The goal of our study was to investigate HPV16 E6/E7 modulation of cellular microRNA (miR) levels and to determine the potential consequences for cellular gene expression...
January 3, 2017: MBio
https://www.readbyqxmd.com/read/28038682/comparison-of-a-teratogenic-transcriptome-based-predictive-test-based-on-human-embryonic-versus-inducible-pluripotent-stem-cells
#12
Vaibhav Shinde, Sureshkumar Perumal Srinivasan, Margit Henry, Tamara Rotshteyn, Jürgen Hescheler, Jörg Rahnenführer, Marianna Grinberg, Johannes Meisig, Nils Blüthgen, Tanja Waldmann, Marcel Leist, Jan Georg Hengstler, Agapios Sachinidis
BACKGROUND: Human embryonic stem cells (hESCs) partially recapitulate early embryonic three germ layer development, allowing testing of potential teratogenic hazards. Because use of hESCs is ethically debated, we investigated the potential for human induced pluripotent stem cells (hiPSCs) to replace hESCs in such tests. METHODS: Three cell lines, comprising hiPSCs (foreskin and IMR90) and hESCs (H9) were differentiated for 14 days. Their transcriptome profiles were obtained on day 0 and day 14 and analyzed by comprehensive bioinformatics tools...
December 30, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28034763/using-neonatal-skin-to-study-the-developmental-programming-of-aging
#13
Leryn J Reynolds, Brett J Dickens, Benjamin B Green, Carmen J Marsit, Kevin J Pearson
Numerous studies have examined how both negative and positive maternal exposures (environmental contaminants, nutrition, exercise, etc.) impact offspring risk for age-associated diseases such as obesity, type 2 diabetes, hypertension, and others. The purpose of this study was to introduce the foreskin as a novel model to examine developmental programming in human neonates, particularly in regard to adipogenesis and insulin receptor signaling, major contributors to age-associated diseases such as obesity and diabetes...
December 27, 2016: Experimental Gerontology
https://www.readbyqxmd.com/read/28034554/biological-characters-of-human-dermal-fibroblasts-derived-from-foreskin-of-male-infertile-patients
#14
Fang Fang, Ke Ni, Yiting Cai, Zhen Ye, Jin Shang, Shiliang Shen, Chengliang Xiong
Dermal fibroblasts play a vital role in maintaining skin function. They not only synthesize and secrete extracellular matrix molecules, but also produce a complex mixture of bioactive factors, which both contribute to immune regulation and wound healing. Fibroblasts isolated from skin tissue exhibit wide range of potentials, especially in regenerative medicine. The use of fibroblast cultures for medical purposes requires standardization of cell preparations. To achieve this, we isolated and characterized dermal fibroblasts from human foreskin with a standardized method...
December 8, 2016: Tissue & Cell
https://www.readbyqxmd.com/read/28032018/a-multi-target-small-molecule-for-targeted-transcriptional-activation-of-therapeutically-significant-nervous-system-genes
#15
Yulei Wei, Ganesh N Pandian, Tingting Zou, Junichi Taniguchi, Shinsuke Sato, Gengo Kashiwazaki, Thangavel Vaijayanthi, Takuya Hidaka, Toshikazu Bando, Hiroshi Sugiyama
An integrated multi-target small molecule capable of altering dynamic epigenetic and transcription programs associated with the brain and nervous system has versatile applications in the regulation of therapeutic and cell-fate genes. Recently, we have been constructing targeted epigenetic ON switches by integrating sequence-specific DNA binding pyrrole-imidazole polyamides with a potent histone deacetylase inhibitor SAHA. Here, we identified a DNA-based epigenetic ON switch termed SAHA-L as the first-ever multi-target small molecule capable of inducing transcription programs associated with the human neural system and brain synapses networks in BJ human foreskin fibroblasts and 201B7-iPS cells...
December 2016: ChemistryOpen
https://www.readbyqxmd.com/read/28003434/gene-cloning-recombinant-expression-purification-and-characterization-of-l-methionine-decarboxylase-from-streptomyces-sp-590
#16
Masaya Hayashi, Akane Okada, Kumiko Yamamoto, Tomomi Okugochi, Chika Kusaka, Daizou Kudou, Michiko Nemoto, Junko Inagaki, Yuu Hirose, Toshihide Okajima, Takashi Tamura, Kenji Soda, Kenji Inagaki
l-Methionine decarboxylase (MetDC) from Streptomyces sp. 590 depends on pyridoxal 5'-phosphate and catalyzes the non-oxidative decarboxylation of l-methionine to produce 3-methylthiopropylamine and carbon dioxide. MetDC gene (mdc) was determined to consist of 1,674 bp encoding 557 amino acids, and the amino acid sequence is similar to that of l-histidine decarboxylases and l-valine decarboxylases from Streptomyces sp. strains. The mdc gene was cloned and recombinant MetDC was heterologously expressed by Escherichia coli The purification of recombinant MetDC was carried out by DEAE-Toyopearl and Ni-NTA agarose column chromatography...
December 21, 2016: Journal of Biochemistry
https://www.readbyqxmd.com/read/28003351/human-microrna-responses-predict-cytomegalovirus-replication-following-solid-organ-transplantation
#17
Sang Hoon Han, D Kumar, V H Ferreira, A Egli, H H Hirsch, M Weisser, C Garzoni, C van Delden, P Y Bochud, O Manuel, P Meylan, K Boggian, S Husain, N J Mueller, A Humar
BACKGROUND: Homo sapiens mature microRNA-200b-3p and -200c-3p are predicted to bind to 3' UTR of mRNA encoding human cytomegalovirus (HCMV) immediate early protein 2 (IE2). We hypothesized that expression of these microRNAs pre-transplant could predict HCMV replication after solid organ transplantation (SOT). METHODS: 272 SOT recipients were HCMV-seropositive pre-transplant and were managed using pre-emptive therapy. Pre-transplant PBMCs were stimulated with HCMV followed by collection of RNA one day post-stimulation...
December 21, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27984119/comparative-study-on-toxicity-of-extracellularly-biosynthesized-and-laboratory-synthesized-cdte-quantum-dots
#18
Marketa Kominkova, Vedran Milosavljevic, Petr Vitek, Hana Polanska, Kristyna Cihalova, Simona Dostalova, Veronika Hynstova, Roman Guran, Pavel Kopel, Lukas Richtera, Michal Masarik, Martin Brtnicky, Jindrich Kynicky, Ondrej Zitka, Vojtech Adam
Nanobiosynthesis belongs to the most recent methods for synthesis of nanoparticles. This type of synthesis provides many advantages including the uniformity in particle shape and size. The biosynthesis has also a significant advantage regarding chemical properties of the obtained particles. In this study, we characterized the basic properties and composition of quantum dots (QDs), obtained by the extracellular biosynthesis by Escherichia coli. Furthermore, the toxicity of the biosynthesized QDs was compared to QDs prepared by microwave synthesis...
January 10, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/27979585/the-differential-expression-of-protease-activated-receptors-contributes-to-functional-differences-between-dark-and-fair-keratinocytes
#19
Meilang Xue, Haiyan Lin, Ruilong Zhao, Hai Po Helena Liang, Christopher Jackson
BACKGROUND: Dark skin has different properties in comparison to fair skin. Melanocytes have been shown to partly contribute to these differences, however, the involvement of keratinocytes from dark or fair skin is not well demonstrated. OBJECTIVES: This study investigated the proliferation and barrier function of dark keratinocytes (DK) and fair keratinocytes (FK), and the role of protease activated receptor (PAR)1 and PAR2. METHODS: DK and FK were isolated from human neonatal foreskins...
December 5, 2016: Journal of Dermatological Science
https://www.readbyqxmd.com/read/27933957/synthesis-and-antiviral-evaluation-of-octadecyloxyethyl-benzyl-9-2-phosphonomethoxy-ethyl-guanine-ode-bn-pmeg-a-potent-inhibitor-of-transient-hpv-dna-amplification
#20
James R Beadle, Nadejda Valiaeva, Guang Yang, Jei-Hwa Yu, Thomas R Broker, Kathy A Aldern, Emma A Harden, Kathy A Keith, Mark N Prichard, Tracy Hartman, Robert W Buckheit, Louise T Chow, Karl Y Hostetler
Human papillomavirus (HPV) high-risk genotypes such as HPV-16 and HPV-18 cause the majority of anogenital tract carcinomas, including cervical cancer, the second most common malignancy in women worldwide. Currently there are no approved antiviral agents that reduce or eliminate HPV and reverse virus-associated pathology. We synthesized and evaluated several alkoxyalkyl acyclic nucleoside phosphonate diesters and identified octadecyloxyethyl benzyl 9-[(2-phosphonomethoxy)ethyl]guanine (ODE-Bn-PMEG) as an active compound which strongly inhibited transient amplification of HPV-11, -16, and -18 origin-containing plasmid DNA in transfected cells at concentrations well below its cytotoxic concentrations...
December 8, 2016: Journal of Medicinal Chemistry
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