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https://www.readbyqxmd.com/read/28729031/knockout-of-the-urate-oxidase-gene-provides-a-stable-mouse-model-of-hyperuricemia-associated-with-metabolic-disorders
#1
Jie Lu, Xu Hou, Xuan Yuan, Lingling Cui, Zhen Liu, Xinde Li, Lidan Ma, Xiaoyu Cheng, Ying Xin, Can Wang, Keke Zhang, Xuefeng Wang, Wei Ren, Ruixia Sun, Zhaotong Jia, Zibin Tian, Qing-Sheng Mi, Changgui Li
The urate oxidase (Uox) gene encodes uricase that in the rodent liver degrades uric acid into allantoin, forming an obstacle for establishing stable mouse models of hyperuricemia. The loss of uricase in humans during primate evolution causes their vulnerability to hyperuricemia. Thus, we generated a Uox-knockout mouse model on a pure C57BL/6J background using the transcription activator-like effector nuclease (TALEN) technique. These Uox-knockout mice spontaneously developed hyperuricemia (over 420 μmol/l) with about 40% survival up to 62 weeks...
July 17, 2017: Kidney International
https://www.readbyqxmd.com/read/28714592/optimized-solid-phase-assisted-synthesis-of-oleic-acid-containing-sirna-nanocarriers
#2
Sören Reinhard, Wei Zhang, Ernst Wagner
Cationic lipo-oligomers containing unsaturated oleic acid are potent siRNA carriers based on electrostatic and hydrophobic lipo-polyplex formation and endosomal membrane destabilization. Lipo-oligomers can be produced by solid-phase supported synthesis in sequence-defined form. However, the trifluoroacetic acid (TFA)-mediated removal of acid-labile protecting groups and cleavage from the resin can be accompanied by side products caused by addition of TFA to the double bonds of oleic acid. Under aqueous conditions, these TFA adducts of oleic acid are converted into hydroxystearic acid derivatives...
July 17, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28713958/lipo%C3%A2-prostaglandin-e1-modifies-cognitive-impairment-in-rats-with-vascular-cognitive-impairment-by-promoting-angiogenesis-via-the-vegf-vegfr-pathway
#3
Bohui Liu, Suping Zhang, Xifeng Xiong, Li Ling, Rui He, Muzhen Wang, Wanqing Deng, Zhihe Liu, Yi Li
The pathological mechanism of vascular cognitive impairment (VCI) involves ischemic lesions in the hippocampus. Prostaglandin E1 (PGE1) serves roles in the promotion of vascular endothelial growth factor (VEGF) expression, angiogenesis and enhances blood flow to ischemic regions. However, the effect of PGE1 on cognitive function in VCI rats and the underlying mechanism are unknown. In the current study, learning and memory function in VCI rats treated by lipo‑PGE1 injection was assessed through Morris Water Maze test...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28709223/instability-evolution-of-the-viscous-elliptic-liquid-jet-in-the-rayleigh-regime
#4
Shibo Gu, Lipo Wang, David L S Hung
For jet flow emanating from noncircular orifices, an unbalanced surface tension force leads to capillary instability, which is independent of influence from the ambient air in the Rayleigh regime. In the present article, the dynamic behavior of incompressible elliptical jets in the Rayleigh regime is investigated. Theoretically, with the consideration of the fluid viscosity, the solution of the Cosserat equation consists of a particular solution and a complementary solution. For the complementary solution the wave number of disturbance modes has two complex conjugate roots, which are responsible for the jet breakup...
June 2017: Physical Review. E
https://www.readbyqxmd.com/read/28708863/negative-modulation-of-suppressive-hiv-specific-regulatory-t-cells-by-il-2-adjuvanted-therapeutic-vaccine
#5
Vedran Brezar, Lylia Hani, Mathieu Surenaud, Audrey Hubert, Christine Lacabaratz, Jean-Daniel Lelièvre, Yves Levy, Nabila Seddiki
The potential benefit in using IL-2 in immunotherapy for cancer and autoimmunity has been linked to the modulation of immune responses, which partly relies on a direct effect on Tregs populations. Here, we revisited the role of IL-2 in HIV infection and investigated whether its use as an adjuvant with therapeutic vaccination, impacts on HIV-specific responses. Antiretroviral therapy treated-patients were randomized to receive 4 boosts of vaccination (ALVACHIV/Lipo-6T, weeks 0/4/8/12) followed by 3 cycles of IL-2 (weeks 16/24/32) before treatment interruption (TI) at week40...
July 14, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28694088/enhanced-expression-of-tumour-suppressor-rar-%C3%AE-by-dspc-nano-formulated-lipo-atra-in-the-lung-of-b16f10-cell-implanted-c57bl6-mice-and-in-a549-cells
#6
V M Berlin Grace, Reshma Mahima Reji, Viswanathan Sundaram
AIM: All Trans Retinoic acid (ATRA) is an efficient drug for leukemia, but is not efficient therapy for solid cancers. Hence we have used 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC) and cholesterol lipo-ATRA to investigate its molecular therapeutic effect on lung cancer. The objective was to find whether it could enhance ATRA receptor, RAR-β expression in lung cells as it was lost in majority of cancers including lung cancer. MATERIALS AND METHODS: The study was made in an experimental C57BL/6 mice model developed by tail vein injection of B16F10 cells and in A549 human lung cancer cells...
July 7, 2017: Life Sciences
https://www.readbyqxmd.com/read/28683925/a-further-result-on-consensus-problems-of-second-order-multi-agent-systems-with-directed-graphs-a-moving-mode-and-multiple-delays
#7
Xue Li, Kai Gao, Peng Lin, Lipo Mo
This paper considers a consensus problem of a class of second-order multi-agent systems with a moving mode and multiple delays on directed graphs. Using local information, a distributed algorithm is adopted to make all agents reach a consensus while moving together with a constant velocity in the presence of delays. To study the effects of the coexistence of the moving mode and delays on the consensus convergence, a frequency domain approach is employed through analyzing the relationship between the components of the eigenvector associated with the eigenvalue on imaginary axis...
July 3, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28672000/synthesis-and-evaluation-of-l-arabinose-based-cationic-glycolipids-as-effective-vectors-for-pdna-and-sirna-in-vitro
#8
Bo Li, Wanrong Guo, Fan Zhang, Meiyan Liu, Shang Wang, Zhonghua Liu, Shuanglin Xiang, Youlin Zeng
Glycolipids might become a new type of promising non-viral gene delivery systems because of their low cytotoxicity, structural diversity, controllable aqua- and lipo-solubility, appropriate density and distribution of positive charges, high transfer efficiency and potential targeting function. In this study, four kinds of L-arabinose-based cationic glycolipids (Ara-DiC12MA, Ara-DiC14MA, Ara-DiC16MA and Ara-DiC18MA) containing quaternary ammonium as hydrophilic headgroup and two alkane chains as hydrophobic domain were synthesized and characterized...
2017: PloS One
https://www.readbyqxmd.com/read/28664976/diet-of-the-prehistoric-population-of-rapa-nui-easter-island-chile-shows-environmental-adaptation-and-resilience
#9
Catrine L Jarman, Thomas Larsen, Terry Hunt, Carl Lipo, Reidar Solsvik, Natalie Wallsgrove, Cassie Ka'apu-Lyons, Hilary G Close, Brian N Popp
OBJECTIVES: The Rapa Nui "ecocide" narrative questions whether the prehistoric population caused an avoidable ecological disaster through rapid deforestation and over-exploitation of natural resources. The objective of this study was to characterize prehistoric human diets to shed light on human adaptability and land use in an island environment with limited resources. MATERIALS AND METHODS: Materials for this study included human, faunal, and botanical remains from the archaeological sites Anakena and Ahu Tepeu on Rapa Nui, dating from c...
June 30, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28657441/molecular-modeling-studies-and-anti-tb-activity-of-trisubstituted-indolizine-analogues-molecular-docking-and-dynamic-inputs
#10
Mohammed A Khedr, Melendhran Pillay, Sandeep Chandrashekharappa, Deepak Chopra, Bandar E Aldhubiab, Mahesh Attimarad, Osama Ibrahim Alwassil, Koleka Mlisana, Bharti Odhav, Katharigatta N Venugopala
A series of trisubstituted indolizine analogues has been designed as a result of a fragment based approach to target the inhibition of mycobacterial enoyl-acyl carrier protein reductase. Anti-tuberculosis (TB) screening of the characterized compounds by a resazurin microplate assay method revealed that ethyl group at second position of indolizine nucleus exhibited activity against susceptible and multidrug-resistant strains of Mycobacterium tuberculosis at concentration of 5.5 μg/mL and 11.3 μg/mL, respectively...
June 28, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28654624/reply-the-lipo-body-lift-a-new-circumferential-body-contouring-technique-useful-after-bariatric-surgery
#11
Nicolas Bertheuil, Benoit Chaput, Paul Girard, Raphael Carloni, Eric Watier, Antoine De Runz
No abstract text is available yet for this article.
July 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28649842/lipo-oligomer-nanoformulations-for-targeted-intracellular-protein-delivery
#12
Peng Zhang, Benjamin Steinborn, Ulrich Lächelt, Stefan Zahler, Ernst Wagner
Here, we report novel lipo-oligoaminoamide nanoformulations for targeted intracellular protein delivery. Formulations are generated by first bioreversibly conjugating a sequence-defined amphiphilic lipo-oligomer 728 to the cargo protein via disulfide bonds, followed by formulation of the formed 728-SS-protein conjugate with different helper lipids in various compositions. The triblock oligoaminoamide 728 contains cysteines for reversible covalent protein conjugation and cross-link-stabilization of formed nanoparticles, polyethylene glycol (PEG) for shielding, and providing a hydrophilic domain, eight cationizable succinoyl tetraethylene pentamine (Stp) repeats for endosomal buffering and escape into the cytosol, and a tetra-oleic acid block for hydrophobic stabilization...
July 10, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28644845/lipo-pge1-suppresses-collagen-production-in-human-dermal-fibroblasts-via-the-erk-ets-1-signaling-pathway
#13
Yoolhee Yang, Hee Jung Kim, Kyong-Je Woo, Daeho Cho, Sa Ik Bang
Dysregulation of collagen production contributes to various pathological processes, including tissue fibrosis as well as impaired wound healing. Lipo-prostaglandin E1 (Lipo-PGE1), a lipid microsphere-incorporated prostaglandin E1, is used as a vasodilator for the treatment of peripheral vascular diseases. Lipo-PGE1 was recently shown to enhance human dermal fibroblast (HDF) migration and in vivo wound healing. No published study has characterized the role of Lipo-PGE1 in collagen regulation in HDFs. Here, we investigated the cellular signaling mechanism by which Lipo-PGE1 regulates collagen in HDFs...
2017: PloS One
https://www.readbyqxmd.com/read/28633618/specialized-consultations-in-a-hospital-based-referral-center-for-patients-suspected-of-having-limb-lymphedema-impact-on-diagnosis
#14
Stéphane Vignes, Florence Vidal, Maria Arrault
Lymphedema, a chronic debilitating disease, is not always easily diagnosed. A total of 254 new patients ((217 women, 37 men), median (Q1-Q3) age 61 (46-72) years) were referred for suspected limb lymphedema to an exclusively lymphedema-dedicated department for a first consultation (January - March 2015) were included; among 118 with upper limb involvement, 100 (84.7%) were diagnosed with post-breast cancer therapy and four with primary lymphedemas; among 136 with lower limb involvement, 31 (22.8%) were diagnosed with primary lymphedemas and 35 (25...
June 1, 2017: Vascular Medicine
https://www.readbyqxmd.com/read/28618644/intrinsic-flow-structure-and-multifractality-in-two-dimensional-bacterial-turbulence
#15
Lipo Wang, Yongxiang Huang
The active interaction between the bacteria and fluid generates turbulent structures even at zero Reynolds number. The velocity of such a flow obtained experimentally has been quantitatively investigated based on streamline segment analysis. There is a clear transition at about 16 times the organism body length separating two different scale regimes, which may be attributed to the different influence of the viscous effect. Surprisingly the scaling extracted from the streamline segment indicates the existence of scale similarity even at the zero Reynolds number limit...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28605896/liposome-coated-persistent-luminescence-nanoparticles-as-luminescence-trackable-drug-carrier-for-chemotherapy
#16
Li-Jian Chen, Cheng-Xiong Yang, Xiu-Ping Yan
Near-infrared persistent luminescence nanoparticles (NIR-PLNPs) are promising imaging agents due to deep tissue penetration, high signal-to-noise ratio, and repeatedly charging ability. Here, we report liposome-coated NIR-PLNPs (Lipo-PLNPs) as a novel persistent luminescence imaging guided drug carrier for chemotherapy. The Lipo-PLNP nanocomposite shows the advantages of superior persistent luminescence and high drug loading efficiency and enables autofluorescence-free and long-term tracking of drug delivery carriers with remarkable therapeutic effect...
June 15, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28596839/structure-specific-effects-of-lipidated-oxytocin-analogs-on-intracellular-calcium-levels-parental-behavior-and-oxytocin-concentrations-in-the-plasma-and-cerebrospinal-fluid-in-mice
#17
Stanislav M Cherepanov, Shigeru Yokoyama, Akira Mizuno, Wataru Ichinose, Olga Lopatina, Anna A Shabalova, Alla B Salmina, Yasuhiko Yamamoto, Hiroshi Okamoto, Satoshi Shuto, Haruhiro Higashida
Oxytocin (OT) is a neuroendocrine nonapeptide that plays an important role in social memory and behavior. Nasal administration of OT has been shown to improve trust in healthy humans and social interaction in autistic subjects in some clinical trials. As a central nervous system (CNS) drug, however, OT has two unfavorable characteristics: OT is short-acting and shows poor permeability across the blood-brain barrier, because it exists in charged form in the plasma and has short half-life. To overcome these drawbacks, an analog with long-lasting effects is required...
February 2017: Pharmacology Research & Perspectives
https://www.readbyqxmd.com/read/28585309/a-high-performance-li-o2-battery-with-a-strongly-solvating-hexamethylphosphoramide-electrolyte-and-a-lipon-protected-lithium-anode
#18
Bin Zhou, Limin Guo, Yantao Zhang, Jiawei Wang, Lipo Ma, Wen-Hua Zhang, Zhengwen Fu, Zhangquan Peng
The aprotic Li-O2 battery has attracted a great deal of interest because theoretically it can store more energy than today's Li-ion batteries. However, current Li-O2 batteries suffer from passivation/clogging of the cathode by discharged Li2 O2 , high charging voltage for its subsequent oxidation, and accumulation of side reaction products (particularly Li2 CO3 and LiOH) upon cycling. Here, an advanced Li-O2 battery with a hexamethylphosphoramide (HMPA) electrolyte is reported that can dissolve Li2 O2 , Li2 CO3 , and LiOH up to 0...
June 6, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28575852/increased-transcriptional-and-metabolic-capacity-for-lipid-metabolism-in-the-peripheral-zone-of-the-prostate-may-underpin-its-increased-susceptibility-to-cancer
#19
Omar Al Kadhi, Maria H Traka, Antonietta Melchini, Perla Troncoso-Rey, Wiktor Jurkowski, Marianne Defernez, Purnima Pachori, Robert D Mills, Richard Y Ball, Richard F Mithen
The human prostate gland comprises three distinct anatomical glandular zones, namely the peripheral, central and transitional zones. Although prostate cancer can arise throughout the prostate, it is more frequent in the peripheral zone. In contrast, hyperplasia occurs most frequently in the transitional zone. In this paper, we test the hypothesis that peripheral and transitional zones have distinct metabolic adaptations that may underlie their different inherent predispositions to cancer and hyperplasia. In order to do this, we undertook RNA sequencing and high-throughput metabolic analyses of non-cancerous tissue from the peripheral and transitional zones of patients undergoing prostatectomy...
May 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28558948/ultrasonic-assisted-incorporation-of-nano-encapsulated-omega-3-fatty-acids-to-enhance-the-fatty-acid-profile-of-pork-meat
#20
K Shikha Ojha, Camila A Perussello, Carlos Álvarez García, Joseph P Kerry, Daniel Pando, Brijesh K Tiwari
In this study, ultrasound was employed to enhance the diffusion of microencapsulated fatty acids into pork meat. Nanovesicles of fish oil composed of 42% EPA (eicosapentanoic acid) and 16% DHA (docosahexanoic acid) were prepared using two different commercial Pronanosome preparations (Lipo-N and Lipo-CAT; which yield cationic and non-cationic nanovesicles, respectively). The thin film hydration (TFH) methodology was employed for encapsulation. Pork meat (Musculus semitendinosus) was submerged in the nanovesicles suspension and subjected to ultrasound (US) treatment at 25kHz for either 30 or 60min...
May 5, 2017: Meat Science
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