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https://www.readbyqxmd.com/read/29453042/evaluation-of-the-anti-hypertensive-effect-of-tengfu-jiangya-tablet-by-combination-of-uplc-q-exactive-ms-based-metabolomics-and-itraq-based-proteomics-technology
#1
Yanpeng Tian, Feng Jiang, Yunlun Li, Haiqiang Jiang, Yanjun Chu, Lijuan Zhu, Weixing Guo
OBJECTIVE: Tengfu Jiangya tablet (TJT) is a traditional Chinese medicine formulation composed of Uncaria rhynchophylla and Semen raphani. It is a hospital preparation that is widely used in clinics for treating hypertension. A previous metabolomics study reported that TJT exerted a protective effect on hypertension by restoring impaired NO production, ameliorating the inflammatory state, and vascular remodeling. A clinical proteomics study also revealed five key target proteins during TJT intervention...
February 13, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29452594/comparative-immunogenicity-of-preparations-of-yeast-derived-dengue-oral-vaccine-candidate
#2
Jyotiranjan Bal, Nguyen Ngoc Luong, Jisang Park, Ki-Duk Song, Yong-Suk Jang, Dae-Hyuk Kim
BACKGROUND: Dengue is listed as a neglected tropical disease by the Center for Disease Control and Preservation, as there are insufficient integrated surveillance strategies, no effective treatment, and limited licensed vaccines. Consisting of four genetically distinct serotypes, dengue virus (DENV) causes serious life-threatening infections due to its complexity. Antibody-dependent enhancement by pre-existing cross-reactive as well as homotypic antibodies further worsens the clinical symptoms of dengue...
February 16, 2018: Microbial Cell Factories
https://www.readbyqxmd.com/read/29452211/impact-of-change-of-matrix-crystallinity-and-polymorphism-on-ovalbumin-release-from-lipid-based-implants
#3
Luisa Duque, Martin Körber, Roland Bodmeier
The objectives of this study were to prepare lipid-based implants by hot melt extrusion (HME) for the prolonged release of ovalbumin (OVA), and to relate protein release to crystallinity and polymorphic changes of the lipid matrix. Two lipids, glycerol tristearate and hydrogenated palm oil, with different composition and degree of crystallinity were studied. Solid OVA was dispersed within the lipid matrixes and it preserved its stability during extrusion. This was partially attributed to a protective effect of the lipidic matrix...
February 13, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29451876/comparative-genomic-analysis-of-the-multispecies-probiotic-marketed-product-vsl-3
#4
François P Douillard, Diego Mora, Robyn T Eijlander, Michiel Wels, Willem M de Vos
Several probiotic-marketed formulations available for the consumers contain live lactic acid bacteria and/or bifidobacteria. The multispecies product commercialized as VSL#3 has been used for treating various gastro-intestinal disorders. However, like many other products, the bacterial strains present in VSL#3 have only been characterized to a limited extent and their efficacy as well as their predicted mode of action remain unclear, preventing further applications or comparative studies. In this work, the genomes of all eight bacterial strains present in VSL#3 were sequenced and characterized, to advance insights into the possible mode of action of this product and also to serve as a basis for future work and trials...
2018: PloS One
https://www.readbyqxmd.com/read/29450412/clinically-approved-liposomal-nanomedicines-lessons-learned-from-the-biomolecular-corona
#5
Giulio Caracciolo
Nowadays, liposomes are the most successful drug delivery systems with a dozen drug products available in the clinic. Grafting poly-(ethylene glycol) (PEG) onto the liposome surface prevents protein binding thus prolonging blood circulation, while synthetic modification of the terminal PEG molecule with ligands (e.g. monoclonal antibodies and peptides) should promote selective accumulation in the tumor region with respect to healthy tissues. However, despite big efforts, advances have not outgrown the development stage and just a few targeted liposomal drugs are commercially available...
February 16, 2018: Nanoscale
https://www.readbyqxmd.com/read/29448554/conductive-adhesive-based-on-mussel-inspired-graphene-decoration-with-silver-nanoparticles
#6
Marcello Casa, Maria Sarno, Rosalba Liguori, Claudia Cirillo, Alfredo Rubino, Emanuele Bezzeccheri, Johan Liu, Paolo Ciambelli
Decoration with silver nanoparticles was obtained by coating graphene with a polydopamine layer, able to induce spontaneous metallic nanoparticles formation without any specific chemical interfacial modifier, neither using complex instrumentation. The choice of dopamine was inspired by the composition of adhesive proteins in mussels, related to their robust attach to solid surfaces. The synthesis procedure started from graphite and involved eco-friendly compounds, such as Vitamin C and glucose as reducing agent and water as reaction medium...
February 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29446056/hypothesis-structural-heterogeneity-of-the-unfolded-proteins-originating-from-the-coupling-of-the-local-clusters-and-the-long-range-distance-distribution
#7
REVIEW
Satoshi Takahashi, Aya Yoshida, Hiroyuki Oikawa
We propose a hypothesis that explains two apparently contradicting observations for the heterogeneity of the unfolded proteins. First, the line confocal method of the single-molecule Förster resonance energy transfer (sm-FRET) spectroscopy revealed that the unfolded proteins possess broad peaks in the FRET efficiency plot, implying the significant heterogeneity that lasts longer than milliseconds. Second, the fluorescence correlation method demonstrated that the unfolded proteins fluctuate in the time scale shorter than 100 ns...
February 14, 2018: Biophysical Reviews
https://www.readbyqxmd.com/read/29444697/modulation-of-pro-apoptotic-effects-and-mitochondrial-potential-on-b16f10-cells-by-dodac-pho-s-liposomes
#8
Arthur Cássio de Lima Luna, José Roberto de Assis Santos Filho, Henrique Hesse, Salvador Claro Neto, Gilberto Orivaldo Chierice, Durvanei Augusto Maria
OBJECTIVE: We aimed to evaluate the potential of DODAC/PHO-S liposomes on the modulation of the expression of pro-apoptotic proteins, loss of lysosomal integrity and the mitochondrial electrical potential, compared with phosphoethanolamine. RESULTS: The results of this study demonstrate that DODAC/PHO-S liposomes have exhibited broad cytotoxic potential in B16F10 murine melanoma cells, with significantly greater proportions than treatment with PHO-S. The treatment with the DODAC/PHO-S 2...
February 14, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29441625/biodegradable-spheres-protect-traumatically-injured-spinal-cord-by-alleviating-the-glutamate-induced-excitotoxicity
#9
Dongfei Liu, Jian Chen, Tao Jiang, Wei Li, Yao Huang, Xiyi Lu, Zehua Liu, Weixia Zhang, Zheng Zhou, Qirui Ding, Hélder A Santos, Guoyong Yin, Jin Fan
New treatment strategies for spinal cord injury with good therapeutic efficacy are actively pursued. Here, acetalated dextran (AcDX), a biodegradable polymer obtained by modifying vicinal diols of dextran, is demonstrated to protect the traumatically injured spinal cord. To facilitate its administration, AcDX is formulated into microspheres (≈7.2 µm in diameter) by the droplet microfluidic technique. Intrathecally injected AcDX microspheres effectively reduce the traumatic lesion volume and inflammatory response in the injured spinal cord, protect the spinal cord neurons from apoptosis, and ultimately, recover the locomotor function of injured rats...
February 14, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29440894/sustained-release-of-fgf-2-from-a-hybrid-hydrogel-of-heparin-poloxamer-and-decellular-matrix-promotes-the-neuroprotective-effects-of-proteins-after-spinal-injury
#10
He-Lin Xu, Fu-Rong Tian, Jian Xiao, Pian-Pian Chen, Jie Xu, Zi-Liang Fan, Jing-Jing Yang, Cui-Tao Lu, Ying-Zheng Zhao
Introduction: The short lifetime of protein-based therapies has largely limited their therapeutic efficacy in injured nervous post-spinal cord injury (post-SCI). Methods: In this study, an affinity-based hydrogel delivery system provided sustained-release of proteins, thereby extending the efficacy of such therapies. The affinity-based hydrogel was constructed using a novel polymer, heparin-poloxamer (HP), as a temperature-sensitive bulk matrix and decellular spinal cord extracellular matrix (dscECM) as an affinity depot of drug...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29439004/assessing-the-nutrient-intake-of-a-low-carbohydrate-high-fat-lchf-diet-a-hypothetical-case-study-design
#11
Caryn Zinn, Amy Rush, Rebecca Johnson
OBJECTIVE: The low-carbohydrate, high-fat (LCHF) diet is becoming increasingly employed in clinical dietetic practice as a means to manage many health-related conditions. Yet, it continues to remain contentious in nutrition circles due to a belief that the diet is devoid of nutrients and concern around its saturated fat content. This work aimed to assess the micronutrient intake of the LCHF diet under two conditions of saturated fat thresholds. DESIGN: In this descriptive study, two LCHF meal plans were designed for two hypothetical cases representing the average Australian male and female weight-stable adult...
February 8, 2018: BMJ Open
https://www.readbyqxmd.com/read/29438755/the-combined-effect-of-formulation-and-ph-on-properties-of-polyethylene-oxide-composite-fiber-containing-egg-albumen-protein
#12
J E Martín-Alfonso, A A Cuadri, A Greiner
The aim of this work was to elucidate the influence of egg white albumen (EA) protein loaded on the electrospinning of PEO solutions under different concentrations and pHs conditions. Properties of the electrospun fiber mats, such as morphology, thermal properties, and wettability were analyzed. In addition, rheological behavior of the polymer solutions was measured to explain the electrospinnability for fiber formation. The rheological results showed that the addition of EA protein affects the molecular entanglement required to electrospin PEO, being able to incorporate up to 75 wt% EA protein...
February 10, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29437411/curvature-induced-instabilities-of-shells
#13
Matteo Pezzulla, Norbert Stoop, Mark P Steranka, Abdikhalaq J Bade, Douglas P Holmes
Induced by proteins within the cell membrane or by differential growth, heating, or swelling, spontaneous curvatures can drastically affect the morphology of thin bodies and induce mechanical instabilities. Yet, the interaction of spontaneous curvature and geometric frustration in curved shells remains poorly understood. Via a combination of precision experiments on elastomeric spherical shells, simulations, and theory, we show how a spontaneous curvature induces a rotational symmetry-breaking buckling as well as a snapping instability reminiscent of the Venus fly trap closure mechanism...
January 26, 2018: Physical Review Letters
https://www.readbyqxmd.com/read/29435767/heat-stable-sublingual-oxytocin-tablets-as-a-potential-needle-free-approach-for-preventing-postpartum-hemorrhage-in-low-resource-settings
#14
Changcheng Zhu, Marcus Estrada, Jessica White, Manjari Lal
Postpartum hemorrhage is a major cause of mortality and morbidity related to childbirth in developing countries. The recommended treatment includes administration of oxytocin; however, oxytocin is a heat-labile protein, and it must be given as an intramuscular injection by skilled health care providers. To address these challenges, we developed a freeze-dried oxytocin fast-dissolving tablet (FDT) for sublingual (SL) needle-free administration. Using methods developed previously, we produced a robust FDT that maintained oxytocin stability at 40 °C, 75% relative humidity for 12 months...
February 12, 2018: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29435445/detection-of-collapse-and-crystallization-of-saccharide-protein-and-mannitol-formulations-by-optical-fibers-in-lyophilization
#15
Jacqueline Horn, Wolfgang Friess
The collapse temperature (Tc) and the glass transition temperature of freeze-concentrated solutions (Tg') as well as the crystallization behavior of excipients are important physicochemical characteristics which guide the cycle development in freeze-drying. The most frequently used methods to determine these values are differential scanning calorimetry (DSC) and freeze-drying microscopy (FDM). The objective of this study was to evaluate the optical fiber system (OFS) unit as alternative tool for the analysis of Tc, Tg' and crystallization events...
2018: Frontiers in Chemistry
https://www.readbyqxmd.com/read/29433837/effect-of-enzymatic-pre-treatment-of-microalgae-extracts-on-their-anti-tumor-activity
#16
Asma Jabeen, Brandon Reeder, Soleiman Hisaindee, Salman Ashraf, Naeema Al Darmaki, Sinan Battah, Sulaiman Al-Zuhair
BACKGROUND: There is an increasing need to find natural bioactive compounds for pharmaceutical applications, because they have less harmful side effects compared to their chemical alternatives. Microalgae (MA) have been identified as a promising source for these bioactive compounds, and this work aimed to evaluate the anti-proliferative effects of semi-purified protein extracted from MA against several tumor cell lines. METHODS: Tested samples comprised MA cell extracts treated with cellulase and lysozyme, prior to extraction...
December 2017: Biomedical Journal
https://www.readbyqxmd.com/read/29433188/physicochemical-and-microstructural-characterization-of-gum-tragacanth-added-whey-protein-based-films
#17
Bade Tonyali, Sevil Cikrikci, Mecit Halil Oztop
Edible films of gum tragacanth (GT) with whey protein were fabricated to see how the incorporation of GT influenced whey protein based film properties. Whey protein isolate (WPI) was replaced with GT at different ratios as 0.5, 1, 1.5 and 2% of WPI. Optical, mechanical, permeability and microstructural properties, as well as moisture sorption and solubility behavior of films were measured. The findings indicated that combination of WPI and GT in film formulation led to less strength, more flexible, less soluble films with lower permeability to water and with higher opacity...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29433005/cytotoxic-activity-and-structural-features-of-ru-ii-phosphine-amino-acid-complexes
#18
Edjane R Dos Santos, Angelica E Graminha, Mario S Schultz, Isabel Correia, Heloisa S Selistre-de-Araújo, Rodrigo S Corrêa, Javier Ellena, Elisângela de Paula S Lacerda, João Costa Pessoa, Alzir A Batista
Thirteen new ruthenium amino acid complexes were synthesized and characterized. They were obtained by the reaction of α-amino acids (AA) with [RuCl2(P-P)(N-N)], where P-P=1,4-bis(diphenylphosphino)butane (dppb) or 1,3-bis(diphenylphosphino)propane (dppp) and N-N=4,4'-dimethyl-2,2'-bipyridine (4'-Mebipy), 5,5'-dimethyl-2,2'-bipyridine (5'-Mebipy) or 4,4'-Methoxy-2-2'-bipyridine (4'-MeObipy). This afforded a family of complexes formulated as [Ru(AA-H)(P-P)(N-N)]PF6, where AA=glycine (Gly), L-alanine (Ala), L-valine (Val), L-tyrosine (Tyr), L-tryptophan (Trp), L-histidine (His) and L-methionine (Met)...
December 23, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29432824/immune-response-to-antigen-adsorbed-to-aluminum-hydroxide-particles-effects-of-co-adsorption-of-alf-or-alfq-adjuvant-to-the-aluminum-antigen-complex
#19
Zoltan Beck, Oscar B Torres, Gary R Matyas, David E Lanar, Carl R Alving
Aluminum salts have been used as vaccine adjuvants for >50 years, and they are currently present in at least 146 licensed vaccines worldwide. In this study we examined whether adsorption of Army Liposome Formulation (ALF) to an aluminum salt that already has an antigen adsorbed to it might result in improved immune potency of the aluminum-adsorbed antigen. ALF is composed of a family of anionic liposome-based adjuvants, in which the liposomes contain synthetic phospholipids having dimyristoyl fatty acyl groups, cholesterol and monophosphoryl lipid A (MPLA)...
February 9, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29432763/-product-on-stopper-in-a-lyophilized-drug-product-cosmetic-defect-or-a-product-quality-concern
#20
Shyam B Mehta, Shouvik Roy, Han-Chang Cathy Yang
During manufacturing of a lyophilized drug product, operator errors in product handling during loading of product filled vials onto the lyophilizer can lead to a seemingly cosmetic defect which can impact certain critical quality attributes of finished product. In this study, filling of a formulated monoclonal antibody in vials was performed using a peristaltic pump filling unit and subsequently the product was lyophilized. Post lyophilization, upon visual inspection, around 40% of vials had cosmetic defect with residual product around stopper of the vial and were categorized as 'product on stopper' vials while remaining 60% vials with no cosmetic defect were called 'acceptable vials'...
February 9, 2018: Journal of Pharmaceutical Sciences
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