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https://www.readbyqxmd.com/read/28731207/polyclonal-and-monoclonal-antibodies-for-treating-acute-rejection-episodes-in-kidney-transplant-recipients
#1
REVIEW
Angela C Webster, Sunny Wu, Krishna Tallapragada, Min Young Park, Jeremy R Chapman, Sue J Carr
BACKGROUND: Registry data shows that the incidence of acute rejection has been steadily falling. Approximately 10% to 35% of kidney recipients will undergo treatment for at least one episode of acute rejection within the first post-transplant year. Treatment options include pulsed steroid therapy, the use of an antibody preparation, the alteration of background immunosuppression, or combinations of these options. Over recent years, new treatment strategies have evolved, and in many parts of the world there has been an increase in use of tacrolimus and mycophenolate and a reduction in the use of cyclosporin and azathioprine use as baseline immunosuppression to prevent acute rejection...
July 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28721091/comparison-of-single-injection-ultrasound-guided-approach-versus-multilevel-landmark-based-approach-for-thoracic-paravertebral-blockade-for-breast-tumor-resection-a-retrospective-analysis-at-a-tertiary-care-teaching-institution
#2
Jagroop Singh Saran, Amie L Hoefnagel, Kristin A Skinner, Changyong Feng, Daryl Irving Smith
BACKGROUND: The role of thoracic paravertebral blockade (TPVB) in decreasing opioid requirements in breast cancer surgery is well documented, and there is mounting evidence that this may improve survival and reduce the rate of malignancy recurrence following cancer-related mastectomy. We compared the two techniques currently in use at our institution, the anatomic landmark-guided (ALG) multilevel versus an ultrasound-guided (USG) single injection, to determine an optimal technique. METHODS: We retrospectively reviewed records of patients who received TPVB from January 2013 to December 2014...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28720077/hemolytic-uremic-syndrome-as-the-presenting-manifestation-of-wt1-mutation-and-denys-drash-syndrome-a-case-report
#3
Joseph L Alge, Scott E Wenderfer, John Hicks, Mir Reza Bekheirnia, Deborah A Schady, Jamey S Kain, Michael C Braun
BACKGROUND: Hemolytic uremic syndrome (HUS) can occur as a primary process due to mutations in complement genes or secondary to another underlying disease. HUS sometimes occurs in the setting of glomerular diseases, and it has been described in association with Denys-Drash syndrome (DDS), which is characterized by the triad of abnormal genitourinary development; a pathognomonic glomerulopathy, diffuse mesangial sclerosis; and the development of Wilms tumor. CASE PRESENTATION: We report the case of a 46, XX female infant who presented with HUS and biopsy-proven thrombotic microangiopathy...
July 18, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28714139/simple-radical-polymerization-of-poly-alginate-graft-n-isopropylacrylamide-injectable-thermoresponsive-hydrogel-with-the-potential-for-localized-and-sustained-delivery-of-stem-cells-and-bioactive-molecules
#4
Sreekanth Pentlavalli, Philip Chambers, Binulal N Sathy, Michelle O'Doherty, Marine Chalanqui, Daniel J Kelly, Tammy Haut-Donahue, Helen O McCarthy, Nicholas J Dunne
In this study, thermoresponsive copolymers that are fully injectable, biocompatible, and biodegradable and are synthesized via graft copolymerization of poly(N-isopropylacrylamide) onto alginate using a free-radical reaction are presented. This new synthesis method does not involve multisteps or associated toxicity issues, and has the potential to reduce scale-up difficulties. Chemical and physical analyses verify the resultant graft copolymer structure. The lower critical solution temperature, which is a characteristic of sol-gel transition, is observed at 32 °C...
July 17, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28711612/exemestane-loaded-alginate-nanoparticles-for-cancer-treatment-formulation-and-in-vitro-evaluation
#5
Jayapal John Joseph, Dhanaraj Sangeetha
Alginate, a biopolymer is most useful for anticancer drug delivery, because of it is biocompatible, nontoxic, biodegradable and exploiting ligand-receptor interaction. Breast cancer is spreading very fast due to the changing food habits and environmental causes. Exemestane (EXE) an oral chemotherapeutic drug was used to treat breast cancer, while loading EXE in alginate nanoparticles, the side effects which was faced during administration are expected to be reduced and control the release of exemestane. Thus, in the present study, an anticancer drug EXE was loaded into the Alginate nanoparticles (ALG-NPs) through simple controlled gelation method and evaluated in vitro to study the performance of ALG-NPs in delivering the anticancer drug EXE...
July 12, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28711017/alginate-gelatin-scaffolds-incorporated-with-silibinin-loaded-chitosan-nanoparticles-for-bone-formation-in-vitro
#6
R S Leena, M Vairamani, N Selvamurugan
Silibinin is a plant derived flavonolignan known for its multiple biological properties, but its role in the promotion of bone formation has not yet been well studied. Moreover, the delivery of Silibinin is hindered by its complex hydrophobic nature, which limits its bioavailability. Hence, in this study, we fabricated a drug delivery system using chitosan nanoparticles loaded with Silibinin at different concentrations (20μM, 50μM, and 100μM). They were then incorporated into scaffolds containing Alginate and Gelatin (Alg/Gel) for the sustained and prolonged release of Silibinin...
July 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28710680/development-of-a-novel-tool-to-assess-the-impact-of-itching-in-pediatric-cholestasis
#7
Binita M Kamath, Linda Abetz-Webb, Ciara Kennedy, Bonnie Hepburn, Martha Gauthier, Nathan Johnson, Sharon Medendorp, Alejandro Dorenbaum, Lora Todorova, Benjamin L Shneider
OBJECTIVES: The aim was to develop a clinical outcome assessment (COA) for itching in children with cholestatic pruritus. METHODS: This prospective study aimed to enroll patients aged 4-30 years with Alagille syndrome (ALGS) or progressive familial intrahepatic cholestasis type 1 and caregivers of patients aged 5 months to 14 years. Eligible patients experienced itching during ≥3 of the 7 days before enrollment and had not undergone liver transplant or surgical interruption of the enterohepatic circulation...
July 14, 2017: Patient
https://www.readbyqxmd.com/read/28704904/development-of-a-spirulina-extract-alginate-imbedded-pcl-nanofibrous-cosmetic-patch
#8
Seon Yeong Byeon, Myung Kwon Cho, Kyou Hee Shim, Hye Jin Kim, Hyeon Gi Song, Hwa Sung Shin
Cosmetic patches have recently been developed as skin products for personal care due to rapid advances in the technology of delivery of active ingredients, moisture and adhesiveness to skin. Alginate and Spirulina are typical marine resources used in cosmetic products. This research involved the development of a Spirulina extract-impregnated alginate nanofiber cosmetic patch supported by a polycaprolactone (PCL) nanofiber cover (Spi/Alg-PCL NF patch). In addition to the ability of alginate to affect moisture and adhesiveness to skin, the impregnation of Spirulina extract strengthened those abilities as well as its own bioactive effectiveness...
July 14, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28698077/examination-of-in-vitro-and-in-vivo-biocompatibility-of-alginate-hyaluronic-acid-microbeads-as-a-promising-method-in-cell-delivery-for-kidney-regeneration
#9
Jhaleh Amirian, Tran Thi Tuong Van, Sang-Ho Bae, Hae-Il Jung, Hwan-Jun Choi, Hyun-Deuk Cho, Byong-Taek Lee
In this study, alginate (ALG) and alginate-hyaluronic acid (ALG-HA) injectable microbeads, with the purpose of delivering stem cells for tissue engineering, were prepared by a spraying method into a CaCl2 solution that shows high porosity for the exchange of nutrition and waste. In addition, the size distribution and surface morphology was investigated using optical and scanning electron microscopy, respectively. The chemical structural properties of the ALG-HA microbeads were examined by Fourier transform infrared spectroscopy...
July 8, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28693954/nano-encapsulation-of-chicken-immunoglobulin-igy-in-sodium-alginate-nanoparticles-in%C3%A2-vitro-characterization
#10
Mostafa Bakhshi, Firouz Ebrahimi, Shahram Nazarian, Jamil Zargan, Faeze Behzadi, Dawood Sadeghi Gariz
Controlled delivery of therapeutic agents by alginate nanoparticles became an attractive issue in the gastric organ. Some therapeutic agents such as proteins could not tolerate in severe condition in the gastrointestinal tract. In the present study, four concentrations of a specific IgY as a prophylactic agent against E. coli O157: H7 was entrapped in 0.2% w/v sodium alginate nanoparticles by ionic gelation method. Depending on the IgY concentration entrapment efficacy was 28.31-99.84%. The physicochemical and structural characteristics of free and IgY-loaded Alg NPs revealed that the individual particles exhibited a spherical shape with a diameter of 45-85 nm, and a negatively charged surface with a zeta potential value of 26-36 mV...
July 7, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28687387/hybrid-hydrogels-with-high-strength-and-biocompatibility-for-bone-regeneration
#11
Yongjiang Zheng, Keqing Huang, Xinru You, Bingxue Huang, Jun Wu, Zhipeng Gu
The development of hydrogels for bone regeneration has highlighted the challenge that load-bearing hydrogels need to be biocompatible while achieving high strength. Several approaches have been reported to improve the toughness of hydrogels, but achieving high toughness and biocompatibility simultaneously remains a challenge. Here we report a polyacrylic acid/alginate/demineralized bone matrix (PAA/Alg/DBM) hybrid double network hydrogel, which was synthesized by a two-step sequential polymerization with embedded DBM, possessing both high strength and biocompatibility...
July 4, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28666497/paroxysmal-nocturnal-haemoglobinuria-type-iii-presenting-as-portal-and-mesenteric-vein-thrombosis-in-a-young-girl
#12
Shahzad Sarwar, Monazza Chaudhry, Natasha Ali
Paroxysmal nocturnal haemoglobinuria (PNH) is a rare, acquired, life-threatening haematological disorder. It is characterised by complement induced haemolytic anaemia, thrombosis and impaired bone marrow function. Thrombosis most commonly occurs in the hepatic, portal, superior mesenteric and cerebral veins. A22-year female, previously diagnosed with severe aplastic anaemia treated with anti-lymphocyte globulin (ALG) and cyclosporine, had become transfusion independent for more than 10 years. She presented with abdominal pain and vomiting, initially diagnosed with portal and superior mesenteric vein thrombosis...
November 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28645918/phosphorylation-of-argonaute-proteins-affects-mrna-binding-and-is-essential-for-microrna-guided-gene-silencing-in%C3%A2-vivo
#13
Miguel Quévillon Huberdeau, Daniela M Zeitler, Judith Hauptmann, Astrid Bruckmann, Lucile Fressigné, Johannes Danner, Sandra Piquet, Nicholas Strieder, Julia C Engelmann, Guillaume Jannot, Rainer Deutzmann, Martin J Simard, Gunter Meister
Argonaute proteins associate with microRNAs and are key components of gene silencing pathways. With such a pivotal role, these proteins represent ideal targets for regulatory post-translational modifications. Using quantitative mass spectrometry, we find that a C-terminal serine/threonine cluster is phosphorylated at five different residues in human and Caenorhabditis elegans In human, hyper-phosphorylation does not affect microRNA binding, localization, or cleavage activity of Ago2. However, mRNA binding is strongly affected...
July 14, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28645154/alg-5-is-a-mirna-associated-argonaute-required-for-proper-developmental-timing-in-the-caenorhabditis-elegans-germline
#14
Kristen C Brown, Joshua M Svendsen, Rachel M Tucci, Brooke E Montgomery, Taiowa A Montgomery
Caenorhabditis elegans contains 25 Argonautes, of which, ALG-1 and ALG-2 are known to primarily interact with miRNAs. ALG-5 belongs to the AGO subfamily of Argonautes that includes ALG-1 and ALG-2, but its role in small RNA pathways is unknown. We analyzed by high-throughput sequencing the small RNAs associated with ALG-5, ALG-1 and ALG-2, as well as changes in mRNA expression in alg-5, alg-1 and alg-2 mutants. We show that ALG-5 defines a distinct branch of the miRNA pathway affecting the expression of genes involved in immunity, defense, and development...
June 22, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28639348/cell-specificity-of-magnetic-cell-seeding-approach-to-hydrogel-colonization
#15
Raminder Singh, Anna Wieser, Supachai Reakasame, Rainer Detsch, Barbara Dietel, Christoph Alexiou, Aldo R Boccaccini, Iwona Cicha
Tissue-engineered scaffolds require an effective colonization with cells. Superparamagnetic iron oxide nanoparticles (SPIONs) can enhance cell adhesion to matrices by magnetic cell seeding. We investigated the possibility of improving cell attachment and growth on different alginate-based hydrogels using fibroblasts and endothelial cells loaded with SPIONs. Hydrogels containing pure alginate (Alg), alginate dialdehyde crosslinked with gelatin (ADA-G) and Alg blended with G or silk fibroin (SF) were prepared...
June 22, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28639052/gentamicin-loaded-polysaccharide-membranes-for-prevention-and-treatment-of-post-operative-wound-infections-in-the-skeletal-system
#16
Urszula Cibor, Małgorzata Krok-Borkowicz, Monika Brzychczy-Włoch, Łucja Rumian, Krzysztof Pietryga, Dominika Kulig, Wojciech Chrzanowski, Elżbieta Pamuła
PURPOSE: To develop polysaccharide-based membranes that allow controlled and localized delivery of gentamicin for the treatment of post-operative bone infections. METHODS: Membranes made of gellan gum (GUM), sodium alginate (ALG), GUM and ALG crosslinked with calcium ions (GUM + Ca and ALG + Ca, respectively) as well as reference collagen (COL) were produced by freeze-drying. Mechanical properties, drug release, antimicrobial activity and cytocompatibility of the membranes were assessed...
June 21, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28629068/a-novel-alginate-encapsulated-system-to-study-biological-response-to-critical-sized-wear-particles-of-uhmwpe-loaded-with-alendronate-sodium
#17
Yumei Liu, Feng Shi, Lin Bo, Wei Zhi, Jie Weng, Shuxin Qu
The aim of this study was to develop a novel alginate-encapsulated system (Alg beads) to investigate the cell response to critical-sized wear particles of ultra-high molecular weight polyethylene loaded with alendronate sodium (UHMWPE-ALN), one of the most effective drugs to treat bone resorption in clinic. The extrusion method was used to prepare Alg beads encapsulating rat calvarial osteoblasts (RCOs) and critical-sized UHMWPE-ALN wear particles with spherical morphology and uniform size. The morphology, permeability and stability of Alg beads were characterized...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28629006/a-colon-targeted-drug-delivery-system-based-on-alginate-modificated-graphene-oxide-for-colorectal-liver-metastasis
#18
Bin Zhang, Yayuan Yan, Qiujuan Shen, Dong Ma, Langhuan Huang, Xiang Cai, Shaozao Tan
A major problem associated with colon cancer is liver metastasis. A colon-targeted drug delivery system is one way to address this problem after the resection of colorectal cancer. However, traditional drug delivery systems face many challenges, such as an inability to control the release rate, inaccurate targeting, susceptibility to the microenvironment and poor stability. Here, we report the development of a graphene oxide (GO)-based, sodium alginate (ALG) functionalized colon-targeting drug delivery system, that is loaded with 5-fluorouracil (5-FU) as the anti-cancer drug (denoted as GO-ALG/5-FU)...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28627052/influence-of-different-protein-sources-in-the-broiler-diet-on-the-presence-of-campylobacter-spp-in-excreta-and-caecal-content
#19
C F Visscher, A Abd El-Wahab, M F E Ahmed, J Hankel, V Taube, J Kamphues
The aim of the present study was to examine possible effects of a different protein supply on the presence of Campylobacter in excreta and caecal content of broiler chickens. Therefore, 220 one-day-old chickens were fed five different diets in the experimental period (day 8 onwards). In the control group (CON; n = 3 boxes), a soya bean-based industrially produced complete diet containing 5-10% whole wheat and coccidiostats was fed, whereas in the remaining groups, four own-made complete diets with four protein sources and combinations (4 × 2 boxes; soya bean meal-based diet = SBM; rapeseed meal-containing diet = RSM; haemoglobin meal-containing diet = HGP; algae-containing diet = ALG) were offered...
June 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28612279/prevalence-and-clinical-outcomes-of-hepatitis-b-virus-infection-in-patients-with-aplastic-anemia
#20
Pan Zhao, Qing Gao, Qiulian He, Jing Tan
The association of HBV infection with other hematopoietic diseases has been discussed previously. However, the clinical significance and clinical outcomes of HBV infection in AA patients have not been clarified. In this study, we sought to investigate the prevalence and related events of HBV in patients with AA who received immunosuppressive therapy. We retrospectively analyzed 245 patients with acquired AA. The HBsAg positivity rate was 14.69% in this group of AA patients. No significant difference was observed in the severity of AA patients with HBV infection and in those without (P = 0...
June 13, 2017: International Journal of Hematology
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