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in vivo hemolysis

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https://www.readbyqxmd.com/read/29240631/in-vivo-5-day-animal-studies-of-a-compact-wearable-pumping-artificial-lung
#1
Shalv P Madhani, Brian J Frankowski, Sang-Ho Ye, Greg W Burgreen, William R Wagner, Robert Kormos, Jonathan D'Cunha, William J Federspiel
Recent studies show improved outcomes in ambulated lung failure patients. Ambulation still remains a challenge in these patients. This necessitates development of more compact and less cumbersome respiratory support specifically designed to be wearable. The Paracorporeal Ambulatory Assist Lung (PAAL) is being designed for providing ambulatory support in lung failure patients during bridge to transplant or recovery. We previously published in vitro and acute in vivo results of the PAAL. This study further evaluates the PAAL for 5 days...
December 11, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29235395/adjuvant-activity-of-ethanol-extract-of-hippophae-rhamnoides-leaves-with-inactivated-rabies-virus-antigen
#2
D Singh, B Jayashankar, K P Mishra, H Tanwar, S N Madhusudana, A Y Belludi, R Tulsawani, S B Singh, L Ganju
CONTEXT: Hippophae rhamnoides L. (Elaeagnaceae), commonly known as seabuckthorn (SBT), is known for its medicinal and nutritional properties. OBJECTIVE: Evaluation of in vivo adjuvant activity of SBT leaf extract (SBTE) with inactivated rabies virus antigen (Rb). MATERIALS AND METHODS: Swiss albino mice were immunized with aqueous-alcoholic SBTE (100 mg/kg body weight) or algel (aluminium hydroxide gel) with or without Rb (5% v/v). After priming, booster was administered on day 14...
December 2018: Pharmaceutical Biology
https://www.readbyqxmd.com/read/29219172/roles-of-lipocalin-2-and-adiponectin-in-iron-overload-cardiomyopathy
#3
REVIEW
Natthaphat Siri-Angkul, Siriporn C Chattipakorn, Nipon Chattipakorn
Thalassemia is among the most common genetic diseases worldwide. Ineffective erythropoiesis, chronic hemolysis, and regular blood transfusion in thalassemia patients lead to increased iron burden. Iron overload cardiomyopathy is the most severe co-morbidity and most common cause of mortality in thalassemia patients. Although its associated mechanisms are still not completely understood, cellular iron mishandling, chronic inflammation, and oxidative stress appear to be the key processes involved. In order to acquire a more comprehensive insight of the impact of cardiac iron overload, these alterations need to be intensively investigated...
December 8, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29208274/hemostatic-porous-sponges-of-cross-linked-hyaluronic-acid-cationized-dextran-by-one-self-foaming-process
#4
Jia-Ying Liu, Yang Li, Yang Hu, Gang Cheng, Enyi Ye, Chuanan Shen, Fu-Jian Xu
Effective hemostatic materials are very important for treating trauma cases. Natural polysaccharides have been particularly appealing in the development of new hemostatic materials due to their unique functions in human bodies. In this work, different polysaccharide-based hemostatic porous sponges (SHDP or SHDQ) of cross-linked hyaluronic acid (HA)/cationized dextran were readily prepared by the self-foaming process of HA and poly((2-dimethyl amino)-ethyl methacrylate)-grafted dextran (Dex-PDM) or partially-quaternized Dex-PDM in the presence of sodium trimetaphosphate crosslinkers...
February 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29205354/podocytes-are-new-cellular-targets-of-hemoglobin-mediated-renal-damage
#5
Alfonso Rubio-Navarro, Maria Dolores Sanchez-Niño, Melania Guerrero-Hue, Cristina García-Caballero, Eduardo Gutiérrez, Claudia Yuste, Ángel Sevillano, Manuel Praga, Javier Egea, Elena Román, Pablo Cannata, Rosa Ortega, Isabel Cortegano, Belén de Andrés, María Luisa Gaspar, Susana Cadenas, Alberto Ortiz, Jesús Egido, Juan Antonio Moreno
Recurrent and massive intravascular hemolysis induces proteinuria, glomerulosclerosis and progressive impairment of renal function, suggesting podocyte injury. However, the effects of hemoglobin (Hb) on podocytes remain unexplored. Our results show that cultured human podocytes or podocytes isolated from murine glomeruli bound and endocytosed Hb through the megalin-cubilin receptor system, thus resulting in increased intracellular Hb catabolism, oxidative stress, activation of the intrinsic apoptosis pathway and altered podocyte morphology, with decreased expressionof the slit diaphragm proteins nephrin and synaptopodin...
December 4, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/29183569/development-of-a-fibrinolysis-assay-for-canine-plasma
#6
U Jeffery, M B Brooks, D N LeVine
Unbalanced coagulation and fibrinolysis leads to hemorrhage or thrombosis. Thromboelastography has been used to characterize hypo- and hyper-fibrinolysis in dogs, however the technique requires specialized instrumentation and proprietary reagents that limit its availability. The aim of this study was to develop a simple microplate method for assessment of fibrinolysis in canine plasma. Plasma from healthy dogs was mixed in a microwell plate with tissue factor, calcium, phospholipid and tissue plasminogen activator...
November 2017: Veterinary Journal
https://www.readbyqxmd.com/read/29170111/tat-modified-self-assembled-cationic-peptide-nanoparticles-as-an-efficient-antibacterial-agent
#7
Bi He, Shiyi Ma, Guifu Peng, Daohang He
The increasing emergence of drug resistant pathogenic bacteria poses a great challenge to clinical therapy and a threat to public health. Cationic peptides have received great attention for their unique antibacterial mechanism and ability to combat drug-resistant bacteria. In this study, we designed a TAT-modified cationic peptide PA-28 which self-assembled into nanoparticles of about 150nm. These nanoparticles showed strong antimicrobial activities against both gram-positive and gram-negative bacteria, including drug-resistant bacteria...
November 20, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29169118/characterization-of-a-microbial-polysaccharide-based-bioflocculant-and-its-anti-inflammatory-and-pro-coagulant-activity
#8
Chunying Zhong, Gang Cao, Kuan Rong, Zhengwu Xia, Ting Peng, Honggao Chen, Jiangang Zhou
We describe a novel bioflocculant, MBF-15, which is an exopolysaccharide extracted from the alkaliphilic bacterium Paenibacillus jamilae. The biophysical characteristics of MBF-15 were determined using Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. MBF-15 was also evaluated for its biocompatibility by examining its inflammatory, coagulant, and hemostatic properties in vitro and in vivo. Pretreatment of peripheral blood mononuclear cells with MBF-15 inhibited lipopolysaccharide-stimulated expression of inducible nitric oxide synthase, production of nitric oxide, and secretion of pro-inflammatory cytokines, including tumor necrosis factor-α and interleukin-6...
November 16, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29122736/enhanced-antimalalarial-activity-of-a-prolonged-release-in-situ-gel-of-arteether-lumefantrine-in-a-murine-model
#9
Shilpa Dawre, Sulabha Pathak, Shobhona Sharma, Padma V Devarajan
The World Health Organization (WHO) recommends artemisinin-based combination therapy (ACT) for treatment of falciparum malaria. Arteether (ART), an artemisinin derivative, is effective against Plasmodium falciparum, but it is available only as painful oily intramuscular (i.m.) injections. We formulated lyotropic liquid crystalline preconcentrates of ART and Lumefantrine (LUM) ACT with and without biodegradable polymer for antimalarial therapy. Following i.m. injection, both formed intact gels in situ due to rapid transition into liquid crystalline phase (LCP) which was confirmed by small angle neutron scattering (SANS), x-ray diffraction (XRD), polarization optical microscopy (POM) and rheological changes...
November 6, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29116801/effects-of-surface-charge-of-hyperbranched-polymers-on-cytotoxicity-dynamic-cellular-uptake-and-localization-hemotoxicity-and-pharmacokinetics-in-mice
#10
Liyu Chen, Joshua D Simpson, Adrian V Fuchs, Barbara E Rolfe, Kristofer J Thurecht
Nanoscaled polymeric materials are increasingly being investigated as pharmaceutical products, drug/gene delivery vectors, or health-monitoring devices. Surface charge is one of the dominant parameters that regulates nanomaterial behavior in vivo. In this paper, we demonstrated how control over chemical synthesis allowed manipulation of nanoparticle surface charge, which in turn greatly influenced the in vivo behavior. Three methacrylate/methacrylamide-based monomers were used to synthesize well-defined hyperbranched polymers (HBP) by reversible addition-fragmentation chain transfer (RAFT) polymerization...
November 8, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29116741/high-performance-plga-magnetic-microspheres-prepared-by-rotating-membrane-emulsification-for-transcatheter-arterial-embolization-and-magnetic-ablation-in-vx2-liver-tumors
#11
Yi-Jun Liang, Hui Yu, Guodong Feng, Linlin Zhuang, Wei Xi, Ming Ma, Jun Chen, Ning Gu, Yu Zhang
Interventional embolization is a popular minimally invasive vascular therapeutic technique and has been widely applied for hepatocellular carcinoma (HCC) therapy. However, harmful effects caused by transcatheter arterial chemoembolization (TACE) and radioembolization, such as the toxicity of chemotherapy or excessive radiation damage, are serious disadvantages and significantly reduce the therapeutic efficacy. Here, a synergistic therapeutic strategy combined transcatheter arterial embolization and magnetic ablation (TAEMA) by using PLGA-magnetic microspheres (MMs) has been successfully applied to orthotopic VX2 liver tumors of rabbits...
November 8, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29102849/study-of-rabbit-erythrocytes-membrane-solubilization-by-sucrose-monomyristate-using-laurdan-and-phasor-analysis
#12
German Günther, Vanesa Herlax, M Pilar Lillo, Catalina Sandoval-Altamirano, Libnny N Belmar, Susana A Sánchez
The study of surfactant and bio membranes interaction is particularly complex due to the diversity in lipid composition and the presence of proteins in natural membranes. Even more difficult is the study of this interaction in vivo since cellular damage may complicate the interpretation of the results, therefore for most of the studies in this field either artificial or model systems are used. One of the model system most used to study biomembranes are erythrocytes due to their relatively simple structure (they lack nuclei and organelles having only the plasma membrane), their convenient experimental manipulation and availability...
November 1, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29072715/sequential-growth-of-caf2-yb-er-caf2-gd-nanoparticles-for-efficient-magnetic-resonance-angiography-and-tumor-diagnosis
#13
Kun Liu, Xu Yan, Yun-Jun Xu, Liang Dong, Li-Na Hao, Yong-Hong Song, Fei Li, Yang Su, Ya-Dong Wu, Hai-Sheng Qian, Wei Tao, Xian-Zhu Yang, Wei Zhou, Yang Lu
It is a significant challenge to develop nanoscale magnetic resonance imaging (MRI) contrast agents with high performance of relaxation. In this work, Gd(3+)-doped CaF2-based core-shell nanoparticles (CaF2:Yb,Er@CaF2:Gd) of sub-10 nm size were controllably synthesized by a facile sequential growth method. The as-prepared hydrophilic CaF2:Yb,Er@CaF2:Gd nanoparticles modified using PEG-PAA di-block copolymer benefited from the presence of Gd only in the outer CaF2 layer of the nanoparticles, which exhibited r1 as high as 21...
October 26, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/29071179/novel-hyaluronic-acid-conjugates-for-dual-nuclear-imaging-and-therapy-in-cd44-expressing-tumors-in-mice-in-vivo
#14
Ravindra Dhar Dubey, Rebecca Klippstein, Julie Tzu-Wen Wang, Naomi Hodgins, Kuo-Ching Mei, Jane Sosabowski, Robert C Hider, Vincenzo Abbate, Prem N Gupta, Khuloud T Al-Jamal
Hyaluronic acid, a natural CD44 receptor ligand, has attracted attention in the past years as a macromolecular delivery of anticancer agents to cancer. At the same time, the clinical applications of Gemcitabine (Gem) have been hindered by its short biological half-life, high dose and development of drug resistance. This work reports the synthesis of a hyaluronic acid (HA) conjugate for nuclear imaging, and in vivo Gem delivery to CD44-expressing solid tumors in mice. HA was individually conjugated, via amide coupling, to Gem (HA-Gem), 4'-(aminomethyl)fluorescein hydrochloride (HA-4'-AMF) or tris(hydroxypyridinone) amine (HA-THP) for cancer therapy, in vitro tracking or single photon emission computed tomography/computed tomography (SPECT/CT) imaging, respectively...
2017: Nanotheranostics
https://www.readbyqxmd.com/read/29051099/hyperglycemia-induced-reactive-species-trigger-structural-changes-in-human-serum-albumin-of-type-1-diabetic-subjects
#15
Zarina Arif, Km Neelofar, Mir Yasir Arfat, Asif Zaman, Akhlas Tarannum, Iffat Parveen, Shafeeque Ahmad, Md Adnan Khan, Asim Badar, Shireen Naaz Islam
Chronic oxidative stress fuels pathogenesis of a large set of diseases. Oxidative stress is the cause and consequence of numerous diseases including type 1 diabetes mellitus (T1DM), in which there is selective destruction of insulin producing pancreatic β-cells. Studies have documented that hyperglycemia produces profound stress. In vivo production of numerous reactive oxygen, nitrogen, chlorine species and lipid/sugar oxidation products are result of persistent hyperglycemia. Post-translational modifications by reactive species may create new antigenic epitopes and play a role in the development of autoimmune response...
October 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29043829/postpartum-acute-hemolytic-transfusion-reactions-associated-with-anti-lea-in-two-pregnancies-complicated-by-preeclampsia
#16
Marcia Marchese
Lewis blood group antibodies, which are mostly naturally occurring and considered clinically insignificant, have rarely been documented as a cause of acute hemolytic transfusion reactions (AHTRs). This report presents two cases of AHTRs caused by anti-Lea occurring in postpartum black females (one group B, one group AB) whose pregnancies were complicated by preeclampsia. Neither anti-Lea was detected by automated solid-phase red cell adherence technology in pre-transfusion testing. Therefore, red blood cell units, compatible by electronic crossmatch, were issued and transfused...
September 2017: Immunohematology
https://www.readbyqxmd.com/read/29020107/diacetylenic-lipids-in-the-design-of-stable-lipopolymers-able-to-complex-and-protect-plasmid-dna
#17
C Facundo Temprana, M Jimena Prieto, Daniela E Igartúa, A Lis Femia, M Silvia Amor, Silvia Del Valle Alonso
Different viral and non-viral vectors have been designed to allow the delivery of nucleic acids in gene therapy. In general, non-viral vectors have been associated with increased safety for in vivo use; however, issues regarding their efficacy, toxicity and stability continue to drive further research. Thus, the aim of this study was to evaluate the potential use of the polymerizable diacetylenic lipid 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphocholine (DC8,9PC) as a strategy to formulate stable cationic lipopolymers in the delivery and protection of plasmid DNA...
2017: PloS One
https://www.readbyqxmd.com/read/28990203/drug-induced-immune-hemolytic-anemia-associated-with-anti-vancomycin-complicated-by-a-paraben-antibody
#18
Thomas J Gniadek, Patricia A Arndt, Regina M Leger, Daniel Zydowicz, Edward Y Cheng, Nicole D Zantek
BACKGROUND: Drug-induced immune hemolytic anemia (DIIHA) is rare, but potentially life-threatening. A high index of clinical suspicion is required for diagnosis, since the number of medications known to induce DIIHA continues to expand. Additionally, in vitro antibody reactivity against reagent additives has been reported, which may complicate test interpretation. CASE REPORT: A 61-year-old group A, D+ woman with a history of negative antibody detection tests developed hemolytic anemia on Postoperative Day 7 after repeat incision and drainage of a chronically infected right knee prosthesis...
October 8, 2017: Transfusion
https://www.readbyqxmd.com/read/28986321/an-optimized-two-vial-formulation-lipid-nanoemulsion-of-paclitaxel-for-targeted-delivery-to-tumor
#19
Lina Chen, Bingchen Chen, Li Deng, Baoan Gao, Yuansheng Zhang, Chan Wu, Nong Yu, Qinqin Zhou, Jianzhong Yao, Jianming Chen
The discovery of new intravenous drug delivery carrier for water-insoluble drug is a challenging task. In this paper, novel two-vial formulation of paclitaxel (PTX)-loaded lipid nanoemulsions (TPLEs) with particle sizes of 110nm (TPLE-1), 220nm (TPLE-2) and 380nm (TPLE-3), which were formed by mixing a PEG400 solution of PTX and 10% (w/w) blank lipid emulsions (BLEs) with different particle size prior to use, were developed and comparatively evaluated for their pharmaceutics, pharmacokinetics, biodistribution, in vitro and in vivo anticancer efficiency...
October 3, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28976179/trio-act-of-boronolectin-with-antibiotic-metal-complexed-macromolecules-toward-broad-spectrum-antimicrobial-efficacy
#20
Peng Yang, Marpe Bam, Parasmani Pageni, Tianyu Zhu, Yung Pin Chen, Mitzi Nagarkatti, Alan W Decho, Chuanbing Tang
Bacterial infections, particularly by Gram-negative pathogens, have become a serious threat to global healthcare due to the diminishing effectiveness of existing antibiotics. We report a nontraditional therapy to combine three components in one macromolecular system, in which boronic acid adheres to peptidoglycan or lipopolysaccharide via boron-polyol based boronolectin chemistry, cationic metal polymer frameworks interact with negatively charged cell membranes, and β-lactam antibiotics are reinstated with enhanced vitality to attack bacteria via evading the detrimental enzyme-catalyzed hydrolysis...
November 10, 2017: ACS Infectious Diseases
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