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https://www.readbyqxmd.com/read/28222169/decellularized-wharton-s-jelly-from-human-umbilical-cord-as-a-novel-3d-scaffolding-material-for-tissue-engineering-applications
#1
Sushma Jadalannagari, Gabriel Converse, Christopher McFall, Eric Buse, Michael Filla, Maria T Villar, Antonio Artigues, Adam J Mellot, Jinxi Wang, Michael S Detamore, Richard A Hopkins, Omar S Aljitawi
In tissue engineering, an ideal scaffold attracts and supports cells thus providing them with the necessary mechanical support and architecture as they reconstruct new tissue in vitro and in vivo. This manuscript details a novel matrix derived from decellularized Wharton's jelly (WJ) obtained from human umbilical cord for use as a scaffold for tissue engineering application. This decellularized Wharton's jelly matrix (DWJM) contained 0.66 ± 0.12 μg/mg sulfated glycosaminoglycans (GAGs), and was abundant in hyaluronic acid, and completely devoid of cells...
2017: PloS One
https://www.readbyqxmd.com/read/28221164/positive-and-negative-cues-for-modulating-neurite-dynamics-and-receptor-expression
#2
Melissa Wrobel, Harini Gayathari Sundararaghavan
Many current peripheral nerve repair strategies focus on delivering positive, growth promoting cues (e.g. extracellular matrix, ECM) while eliminating negative, growth inhibiting cues (e.g. chondroitin sulfate proteoglycans, CSPGs) at the injury site. We hypothesized that recapitulating the positive and negative cues of the peripheral nerve injury microenvironment would improve regeneration. First, we tested the effects of a characteristic CSPG, Chondroitin Sulfate A (CSA) on neurite dynamics of dissociated chick embryo dorsal root ganglion (DRG) neurons using time lapse video microscopy...
February 21, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28221040/magnetic-fullerene-dna-hyaluronic-acid-nanovehicles-with-magnetism-reduction-dual-responsive-triggered-release
#3
Ling Wang, Yitong Wang, Jingcheng Hao, Shuli Dong
We create the dual-responsive nanovehicle that can effectively combine and abundantly utilize magnetic and glutathione (GSH)-reductive triggers to control the drug delivery and achieve more intelligent and powerful targeting. In the nanovehicles, paramagnetic fullerene (C60@CTAF) was prepared via one-step modification of fullerene with magnetic surfactant CTAF by hydrophobic interaction for the first time. The perfect conjugation of C60 and CTAF increased the solubility or dispersity of fullerenes and qualify CTAF with more powerful assembly capability with DNA...
February 21, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28218781/study-on-the-effects-of-blueberry-treatment-on-histone-acetylation-modification-of-ccl4-induced-liver-disease-in-rats
#4
W Zhan, X Liao, T Tian, L Yu, X Liu, B Li, J Liu, B Han, R J Xie, Q H Ji, Q Yang
The objective of this study was to investigate the effects of blueberry treatment on histone acetylation modification of carbon tetrachloride (CCl4)-induced liver disease in rats. Laboratory rats were randomly divided into control, hepatic fibrosis, blueberry treatment, blueberry intervention, and natural recovery groups. Rats in the model groups were treated with CCl4 administered subcutaneously at 4- and 8-week intervals, and then executed. Both the 4- and 8-week treatment groups were treated with blueberry juice for 8 weeks, and then executed after 12 and 16 weeks, respectively...
February 16, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28218494/influence-of-oxygen-levels-on-chondrogenesis-of-porcine-mesenchymal-stem-cells-cultured-in-polycaprolactone-scaffolds
#5
Joaquin Rodenas-Rochina, Daniel J Kelly, Jose Luis Gómez Ribelles, Myriam Lebourg
Chondrogenesis of Mesenchymal stem cells (MSCs) is known to be regulated by a number of environmental factors, including local oxygen levels. The hypothesis of this study is that the response of MSCs to hypoxia is dependent on the physical and chemical characteristics of the substrate used. The objective of this study was to explore how different modifications to polycaprolactone (PCL) scaffolds influenced the response of MSCs to hypoxia. PCL, PCL-hyaluronic acid (HA) and PCL-Bioglass® (BG) scaffolds were seeded with MSCs derived from bone marrow and cultured for 35 days under normoxic or low oxygen conditions, and the resulting biochemical properties of the MSC laden construct were assessed...
February 20, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28216300/boronic-acid-tethered-amphiphilic-hyaluronic-acid-derivative-based-nanoassemblies-for-tumor-targeting-and-penetration
#6
Jae Young Jeong, Eun-Hye Hong, Song Yi Lee, Jae-Young Lee, Jae-Hyoung Song, Seung-Hak Ko, Jae-Seong Shim, Sunghwa Choe, Dae-Duk Kim, Hyun-Jeong Ko, Hyun-Jong Cho
(3-Aminomethylphenyl)boronic acid (AMPB)-installed hyaluronic acid-ceramide (HACE)-based nanoparticles (NPs), including manassantin B (MB), were fabricated for tumor-targeted delivery. The amine group of AMPB was conjugated to the carboxylic acid group of hyaluronic acid (HA) via amide bond formation, and synthesis was confirmed by spectroscopic methods. HACE-AMPB/MB NPs with a 239-nm mean diameter, narrow size distribution, negative zeta potential, and > 90% drug encapsulation efficiency were fabricated...
February 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28215089/structure-and-property-changes-in-self-assembled-lubricin-layers-induced-by-calcium-ion-interactions
#7
George W Greene, Rajiv Thapa, Stephen Andrew Holt, Xiaoen Wang, Christopher J Garvey, Rico F Tabor
Lubricin is a "mucin-like" glycoprotein found in synovial fluids and coating the cartilage surfaces of articular joints which is now generally accepted as one of the body's primary boundary lubricants and anti-adhesive agents. Lubricin's superior lubrication and anti-adhesion are believed to derive from its unique interfacial properties by which lubricin molecules adhere to surfaces (and biomolecules, including hyaluronic acid and collagen) through discrete interactions localized to its two terminal end-domains...
February 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28214837/efficacy-of-glucosamine-sulphate-in-skin-ageing-results-from-an-ex-vivo-anti-ageing-model-and-a-clinical-trial
#8
Audrey Gueniche, Isabelle Castiel-Higounenc
BACKGROUND: Glucosamine sulphate (GS) is essential in the biosynthesis of glycolipids, glycoproteins, glycosaminoglycans (GAGs), hyaluronate, and proteoglycans. Connective tissues primarily contain collagen and proteoglycans and play an important role in skin ageing. OBJECTIVE: The objectives were to assess ex vivo the impact of GS on skin ageing parameters and in vivo the effect of GS on the skin physiology of mature healthy volunteers after oral intake. METHODS: The impact of GS on skin ageing was assessed ex vivo via different immunohistochemical assays and histology and via a clinical study using biopsies...
February 18, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28213097/self-assembled-tumor-targeting-hyaluronic-acid-nanoparticles-for-photothermal-ablation-in-orthotopic-bladder-cancer
#9
Tingsheng Lin, Ahu Yuan, Xiaozhi Zhao, Huibo Lian, Junlong Zhuang, Wei Chen, Qing Zhang, Guangxiang Liu, Shiwei Zhang, Wei Chen, Wenmin Cao, Chengwei Zhang, Jinhui Wu, Yiqiao Hu, Hongqian Guo
: Bladder cancer is one of the most frequent malignancies in the urinary system. Radical cystectomy is inevitable when bladder cancer progresses to a muscle-invasive disease. However, cystectomy still causes a high risk of death and a low quality of life (such as ureter-abdomen ostomy, uroclepsia for ileal-colon neobladder). Therefore, more effective treatments as well as bladder preservation are needed. We developed self-assembled tumor-targeting hyaluronic acid-IR-780 nanoparticles for photothermal ablation in over-expressing CD44 (the receptor for HA) bladder cancer, which show high tumor selectivity, high treatment efficacy, good bioavailability, and excellent biocompatibility...
February 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28212584/hyaluronic-acid-serum-albumin-conjugate-based-nanoparticles-for-targeted-cancer-therapy
#10
Ravit Edelman, Yehuda G Assaraf, Inna Levitzky, Tal Shahar, Yoav D Livney
Multiple carcinomas including breast, ovarian, colon, lung and stomach cancer, overexpress the hyaluronic acid (HA) receptor, CD44. Overexpression of CD44 contributes to key cancer processes including tumor invasion, metastasis, recurrence, and chemoresistance. Herein, we devised novel targeted nanoparticles (NPs) for delivery of anticancer chemotherapeutics, comprised of self-assembling Maillard reaction-based conjugates of HA and bovine serum albumin (BSA). HA served as the hydrophilic block, and as the ligand for actively targeting cancer cells overexpressing CD44...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28210914/comparison-of-histopathological-characteristics-of-polyacrylate-polyalcohol-copolymer-with-dextranomer-hyaluronic-acid-after-injection-beneath-the-bladder-mucosa-layer-a-rabbit-model
#11
Abdol-Mohammad Kajbafzadeh, Shabnam Sabetkish, Reza Khorramirouz, Nastaran Sabetkish
OBJECTIVES: To compare short- and long-term local tissue reaction of polyacrylate polyalcohol copolymer (PPC) with dextranomer/hyaluronic acid (DHA) in rabbits. METHODS: Eight healthy New Zealand rabbits were randomly divided into two groups. In group I (control group), DHA was injected just beneath the mucosal layer of the bladder wall, while PPC was injected in group II. Subcutaneous injection of both bulking agents was also performed in nude mice. Histological evaluations with leukocyte common antibody (LCA), CD68, CD31, and CD34 were conducted on biopsies 1 and 6 months postoperatively...
February 16, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28210379/two-crosslinking-technologies-for-superficial-reticular-dermis-injection-a-comparative-ultrasound-and-histologic-study
#12
Patrick Micheels, Stéphanie Besse, Didier Sarazin
Background: Few hyaluronic acid fillers have been developed for superficial injection. Objective: To compare the diffusion and integration properties of cohesive polydensified matrix and Vycross® technology hyaluronic acid fillers with lidocaine following injection into the superficial reticular dermis. Methods and materials: Two subjects received two injections each of cohesive polydensified matrix and Vycross® hyaluronic acid (0.2mL/site) in the superficial reticular dermis of the buttock under ultrasound control...
January 2017: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/28209276/the-aahks-clinical-research-award-what-are-the-costs-of-knee-osteoarthritis-in-the-year-prior-to-total-knee-arthroplasty
#13
Nicholas A Bedard, Spencer B Dowdle, Christopher A Anthony, David E DeMik, Michael A McHugh, Kevin J Bozic, John J Callaghan
BACKGROUND: Despite American Academy of Orthopaedic Surgeons Clinical Practice Guidelines (CPGs) related to the non-arthroplasty management of osteoarthritis (OA) of the knee, non-recommended treatments remain in common use. We sought to determine the costs associated with non-arthroplasty management of knee OA in the year prior to total knee arthroplasty (TKA) and stratify them by CPG recommendation status. METHODS: The Humana database was reviewed from 2007 to 2015 for primary TKA patients...
January 18, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28208014/improved-antitumor-efficacy-of-hyaluronic-acid-complexed-paclitaxel-nanoemulsions-in-treating-non-small-cell-lung-cancer
#14
Joo-Eun Kim, Young-Joon Park
Paclitaxel (PTX) is a effectively chemotherapeutic agent which is extensively able to treat the non-small cell lung, pancreatic, breast and other cancers. But it is a practically insoluble drug with water solubility less than 1 µg/mL, which restricts its therapeutic application. To overcome the problem, hyaluronic acid-complexed paclitaxel nanoemulsions (HPNs) were prepared by ionic complexation of paclitaxel (PTX) nanoemulsions and hyaluronic acid (HA) to specifically target non-small cell lung cancer. HPNs were composed of DL-α-tocopheryl acetate, soybean oil, polysorbate 80, ferric chloride, and HA and fabricated by high-pressure homogenization...
February 17, 2017: Biomolecules & Therapeutics
https://www.readbyqxmd.com/read/28207824/evaluation-of-surgical-anti-adhesion-products-to-reduce-postsurgical-intra-abdominal-adhesion-formation-in-a-rat-model
#15
Long-Xiang Lin, Fang Yuan, Hui-Hui Zhang, Ni-Na Liao, Jing-Wan Luo, Yu-Long Sun
BACKGROUND: Adhesions frequently occur after abdominal surgery. Many anti-adhesion products have been used in clinic. However, the evidences are short for surgeons to reasonably choose the suitable anti-adhesion produces in clinical practice. This study provided such evidence by comparing the efficiency of five products to prevent abdominal adhesion formation in a rat model. METHODS: Fifty-six Sprague-Dawley rats were randomly divided into seven groups: sham-operation group, adhesion group, and five product groups (n = 8)...
2017: PloS One
https://www.readbyqxmd.com/read/28207787/hyaluronic-acid-synthesis-is-required-for-zebrafish-tail-fin-regeneration
#16
Xiaohu Ouyang, Nicholas J Panetta, Maya D Talbott, Alexander Y Payumo, Caroline Halluin, Michael T Longaker, James K Chen
Using genome-wide transcriptional profiling and whole-mount expression analyses of zebrafish larvae, we have identified hyaluronan synthase 3 (has3) as an upregulated gene during caudal fin regeneration. has3 expression is induced in the wound epithelium within hours after tail amputation, and its onset and maintenance requires fibroblast growth factor, phosphoinositide 3-kinase, and transforming growth factor-ß signaling. Inhibition of hyaluronic acid (HA) synthesis by the small molecule 4-methylumbelliferone (4-MU) impairs tail regeneration in zebrafish larvae by preventing injury-induced cell proliferation...
2017: PloS One
https://www.readbyqxmd.com/read/28203492/safety-and-effectiveness-of-juv%C3%A3-derm-ultra-plus-injectable-gel-in-correcting-severe-nasolabial-folds-in-chinese-subjects
#17
Dong Li, Yun Xie, Qin Li, Jiaming Sun, Ping Jiang, Yi Jia, Diane K Murphy, Qingfeng Li
BACKGROUND: Hyaluronic acid dermal fillers are effective in correcting severe nasolabial folds (NLFs) in non-Asian populations. We assessed safety and effectiveness of Juvéderm Ultra Plus in a Chinese population. METHODS: This double-blind study randomized Chinese subjects with severe NLFs to Juvéderm Ultra Plus (24 mg/mL) in 1 NLF and Restylane injectable gel (20 mg/mL) in the other NLF. NLFs were evaluated using the validated 5-point photonumeric Allergan NLF Severity Scale (0 is "no wrinkle" and 4 is "very deep wrinkle")...
January 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28199887/killing-colon-cancer-cells-through-pcd-pathways-by-a-novel-hyaluronic-acid-modified-shell-core-nanoparticle-loaded-with-rip3-in-combination-with-chloroquine
#18
Xueyan Hou, Chengli Yang, Lijing Zhang, Tingting Hu, Dan Sun, Hua Cao, Fan Yang, Gang Guo, Changyang Gong, Xiaoning Zhang, Aiping Tong, Rui Li, Yu Zheng
Due to extensive apoptosis defects and multidrug resistance, there is great interest regarding non-apoptotic programmed cell death (PCD) pathways, such as lysosomal-mediated programmed cell death (LM-PCD), necroptosis and autophagy. Because there is an intricate effector network among these PCD pathways, it is expected that they may act synergistically in cancer therapy. In this study, chloroquine (CQ) was found to significantly upregulate receptor-interacting protein kinase 3 (RIP3) expression, and RIP3 were involved in CQ-related autophagy...
January 2, 2017: Biomaterials
https://www.readbyqxmd.com/read/28197326/efficacy-of-carboxymethylcellulose-and-hyaluronate-in-dry-eye-disease-a-systematic-review-and-meta-analysis
#19
Jae Kyeong Song, Kiheon Lee, Hwa Yeon Park, Joon Young Hyon, Seung-Won Oh, Woo Kyung Bae, Jong-Soo Han, Se Young Jung, Yoo Jin Um, Ga-Hye Lee, Ji Hye Yang
BACKGROUND: The efficacy of two artificial tears, carboxymethylcellulose (CMC) and hyaluronate (HA), was compared in the treatment of patients with dry eye disease. METHODS: We conducted a systematic review and meta-analysis on randomized controlled trials in the PubMed, Embase, Cochrane Library, and ClinicalTrials.gov databases. The efficacy was compared in terms of the mean change from baseline in tear break-up time. The meta-analysis was conducted using both random and fixed effect models...
January 2017: Korean Journal of Family Medicine
https://www.readbyqxmd.com/read/28197017/characterization-and-therapeutic-application-of-canine-adipose-mesenchymal-stem-cells-to-treat-elbow-osteoarthritis
#20
Éva Kriston-Pál, Ágnes Czibula, Zoltán Gyuris, Gyula Balka, Antal Seregi, Farkas Sükösd, Miklós Süth, Endre Kiss-Tóth, Lajos Haracska, Ferenc Uher, Éva Monostori
Visceral adipose tissue (AT) obtained from surgical waste during routine ovariectomies was used as a source for isolating canine mesenchymal stem cells (MSCs). As determined by cytofluorimetry, passage 2 cells expressed MSC markers CD44 and CD90 and were negative for lineage-specific markers CD34 and CD45. The cells differentiated toward osteogenic, adipogenic, and chondrogenic directions. With therapeutic aims, 30 dogs (39 joints) suffering from elbow dysplasia (ED) and osteoarthritis (OA) were intra-articularly transplanted with allogeneic MSCs suspended in 0...
January 2017: Canadian Journal of Veterinary Research, Revue Canadienne de Recherche Vétérinaire
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