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https://www.readbyqxmd.com/read/29782191/lipid-protein-and-microrna-composition-within-mesenchymal-stem-cell-derived-exosomes
#1
Hao Deng, Chun Sun, Yingxin Sun, Huhu Li, Lin Yang, Danbin Wu, Qing Gao, Xijuan Jiang
Mesenchymal stem cells (MSCs) were regarded as one of the most promising type of seed cells in tissue engineering due to its easy accessibility and multipotent feature of being able to differentiate into adipocyte, osteoblast, cardiomyocytes, and neurons. For years, MSCs have been applied in treating cardiovascular disease, reconstructing kidney injury, and remodeling immune system with remarkable achievements. Basic researches revealed that its clinic effects are not only due to their pluripotent ability but also through their paracrine function that they synthesize and secrete a broad spectrum of growth factors and cytokines...
May 21, 2018: Cellular Reprogramming
https://www.readbyqxmd.com/read/29778741/changes-in-lipid-protein-and-carbohydrate-metabolism-in-spodoptera-exigua-larvae-associated-with-infection-by-heliothis-virescens-ascovirus-3h
#2
Zi-Qi Li, Huan Yu, Guo-Hua Huang
Spodoptera exigua (Lepidoptera: Noctuidae) larvae were used to analyze the regulation of lipid, protein and carbohydrate metabolism in host larvae infected with the Heliothis virescens ascovirus 3h (HvAV-3h). Using histological sections, significant pathological changes were found in the fat bodies of infected larvae from 24 h to 72 h post-infection (hpi). The lipid and protein contents of the infected larvae were significantly higher than those of the uninfected larvae, while the carbohydrate content of the infected larvae was significantly lower than that of the mock-infected larvae...
May 17, 2018: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29778711/atr-ir-study-of-skin-components-lipids-proteins-and-water-part-ii-near-infrared-radiation-effect
#3
S Olsztyńska-Janus, Z Kiełbowicz, M A Czarnecki
Near infrared (NIR) radiation has been widely used in medicine and biomedical engineering. In spite of numerous studies the molecular mechanism of NIR radiation on biological systems has not been established as yet. The objective of this work was examination of the effect of NIR irradiation on the skin components. Modifications of lipid organization after NIR exposure vs. temperature (from 20 to 90 °C) have been investigated using Attenuated Total Reflectance Infrared (ATR-IR) spectroscopy. This work is a continuation of our previous studies on the temperature effect on skin components [1]...
May 11, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29771134/effects-of-the-incorporation-of-cantaloupe-pulp-in-yogurt-physicochemical-phytochemical-and-rheological-properties
#4
F Kermiche, L Boulekbache-Makhlouf, M Félix, L Harkat-Madouri, H Remini, K Madani, A Romero
The therapeutic effects of cantaloupe are of great interest for the development of functional foods such as yogurt. In this study a new dairy product has been formulated by enriching natural yogurt with fruit cantaloupe (yogurt with cantaloupe puree, yogurt with dry cantaloupe and yogurt with dry cantaloupe and cantaloupe puree). Thus, composition (moisture, ash, lipids, proteins), including amino acid contents, lactic flora as well as rheological (viscoelasticity, viscosity) property of cantaloupe yogurt and natural yogurt is assessed...
January 1, 2018: Food Science and Technology International, Ciencia y Tecnología de Los Alimentos Internacional
https://www.readbyqxmd.com/read/29764582/-research-advances-in-the-role-of-aptamers-in-the-diagnosis-and-targeted-therapy-of-pediatric-cancer
#5
Yi-Bin Zhang, Yan-Peng Wang, Jing Liu
Aptamers are single-stranded DNA or RNA which are isolated from synthesized random oligonucleotide library in vitro via systematic evolution of ligands by exponential enrichment (SELEX) and can bind to metal ions, small molecules, carbohydrates, lipids, proteins, and others targets with high affinity and specificity. Aptamers have the advantages of simple preparation, good thermal stability, and low immunogenicity and have great potential in the medical fields such as molecular imaging, biosensing, early diagnosis of diseases, and targeted therapy...
May 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29753114/directional-k-channel-insertion-in-a-single-phospholipid-bilayer-neutron-reflectometry-and-electrophysiology-in-the-joint-exploration-of-a-model-membrane-functional-platform
#6
V Rondelli, E Del Favero, P Brocca, G Fragneto, M Trapp, L Mauri, M G Ciampa, G Romani, C J Braun, L Winterstein, I Schroeder, G Thiel, A Moroni, L Cantu'
We investigated the insertion of small potassium (K+ ) channel proteins (KcvMA-1D and KcvNTS ) into model membranes and the lipid-protein structural interference, combining neutron reflectometry and electrophysiology. Neutron reflectometry experiments showed how the transverse structure and mechanical properties of the bilayer were modified, upon insertion of the proteins in single model-membranes, either supported on solid substrate or floating. Parallel electrophysiology experiments were performed on the same channels reconstituted in free-standing planar lipid bilayers, of both typical composition and matched to the neutron reflectometry experiment, assessing their electrical features...
May 9, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29745132/monitoring-metabolic-reactions-in-staphylococcus-epidermidis-exposed-to-silicon-nitride-using-in-situ-time-lapse-raman-spectroscopy
#7
Francesco Boschetto, Tetsuya Adachi, Satoshi Horiguchi, Danny Fainozzi, Fulvio Parmigiani, Elia Marin, Wenliang Zhu, Bryan McEntire, Toshiro Yamamoto, Narisato Kanamura, Osam Mazda, Eriko Ohgitani, Giuseppe Pezzotti
Staphylococcus epidermidis (S. epidermidis) is one of the leading nosocomial pathogens, particularly associated with periprosthetic infections of biomedical implants. Silicon nitride (Si3N4), a nonoxide biomaterial widely used in spinal implants, has shown bacteriostatic effects against both gram-positive and gram-negative bacteria; however, the physicochemical interactions between Si3N4 and bacteria yet remain conspicuously unexplored. In situ time-lapse Raman spectroscopic experiments were conducted by exposing S...
May 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29740241/study-on-impact-of-habitat-degradation-on-proximate-composition-and-amino-acid-profile-of-indian-major-carps-from-different-habitats
#8
Bilal Hussain, Tayyaba Sultana, Salma Sultana, Z Ahmed, Shahid Mahboob
This investigation is aimed to study an impact of habitat degradation on proximate composition and amino acid (AAs) profile of Catla catla, Labeo rohita and Cirrhinus mrigala collected from polluted, non-polluted area (upstream) and a commercial fish farm. The amino acid profile was estimated by the amino acid analyzer. C. catla collected from the polluted environment had highest lipid, protein and ash contents (12.04 ± 0.01, 13.45 ± 0.01 and 0.93 ± 0.03%, respectively). The high protein content (14...
May 2018: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/29738690/recombinant-production-reconstruction-in-lipid-protein-nanodiscs-and-electron-microscopy-of-full-length-%C3%AE-subunit-of-human-potassium-channel-kv7-1
#9
Z O Shenkarev, M G Karlova, D S Kulbatskii, M P Kirpichnikov, E N Lyukmanova, O S Sokolova
Voltage-gated potassium channel Kv7.1 plays an important role in the excitability of cardiac muscle. The α-subunit of Kv7.1 (KCNQ1) is the main structural element of this channel. Tetramerization of KCNQ1 in the membrane results in formation of an ion channel, which comprises a pore and four voltage-sensing domains. Mutations in the human KCNQ1 gene are one of the major causes of inherited arrhythmias, long QT syndrome in particular. The construct encoding full-length human KCNQ1 protein was synthesized in this work, and an expression system in the Pichia pastoris yeast cells was developed...
May 2018: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/29732092/impact-of-the-lipid-bilayer-on-energy-transfer-kinetics-in-the-photosynthetic-protein-lh2
#10
John I Ogren, Ashley L Tong, Samuel C Gordon, Aurélia Chenu, Yue Lu, Robert E Blankenship, Jianshu Cao, Gabriela S Schlau-Cohen
Photosynthetic purple bacteria convert solar energy to chemical energy with near unity quantum efficiency. The light-harvesting process begins with absorption of solar energy by an antenna protein called Light-Harvesting Complex 2 (LH2). Energy is subsequently transferred within LH2 and then through a network of additional light-harvesting proteins to a central location, termed the reaction center, where charge separation occurs. The energy transfer dynamics of LH2 are highly sensitive to intermolecular distances and relative organizations...
March 28, 2018: Chemical Science
https://www.readbyqxmd.com/read/29728792/carbohydrate-reserves-and-seed-development-an-overview
#11
REVIEW
Manuel Aguirre, Edward Kiegle, Giulia Leo, Ignacio Ezquer
Seeds are one of the most important food sources, providing humans and animals with essential nutrients. These nutrients include carbohydrates, lipids, proteins, vitamins and minerals. Carbohydrates are one of the main energy sources for both plant and animal cells and play a fundamental role in seed development, human nutrition and the food industry. Many studies have focused on the molecular pathways that control carbohydrate flow during seed development in monocot and dicot species. For this reason, an overview of seed biodiversity focused on the multiple metabolic and physiological mechanisms that govern seed carbohydrate storage function in the plant kingdom is required...
May 4, 2018: Plant Reproduction
https://www.readbyqxmd.com/read/29723283/tilapia-waste-flour-as-a-natural-nutritional-replacer-for-bread-a-consumer-perspective
#12
Maria Lúcia G Monteiro, Eliane T Mársico, Manoel S Soares Junior, Rosires Deliza, Denize C R de Oliveira, Carlos A Conte-Junior
Six bread formulations with different levels of tilapia-waste flour (BTF0%, BTF2.5%, BTF5%, BTF10%, BTF15%, and BTF20%) were analyzed for nutritional composition and sensory characterization. Tilapia-waste flour (TF) increased (P < 0.05) the lipid, protein and ash contents, and decreased (P < 0.05) the levels of carbohydrates and total dietary fiber. BTF0%, BTF2.5% and BTF5% received the highest (P < 0.05) scores for acceptance and preference. Despite this apparent consumer preference for low or no levels, TF can be added to bread at levels below 12...
2018: PloS One
https://www.readbyqxmd.com/read/29713940/effects-of-reactive-oxygen-species-and-interplay-of-antioxidants-during-physical-exercise-in-skeletal-muscles
#13
REVIEW
Anand Thirupathi, Ricardo A Pinho
A large number of researches have led to a substantial growth of knowledge about exercise and oxidative stress. Initial investigations reported that physical exercise generates free radical-mediated damages to cells; however, in recent years, studies have shown that regular exercise can upregulate endogenous antioxidants and reduce oxidative damage. Yet, strenuous exercise perturbs the antioxidant system by increasing the reactive oxygen species (ROS) content. These alterations in the cellular environment seem to occur in an exercise type-dependent manner...
May 1, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29713834/the-phenotypic-effects-of-exosomes-secreted-from-distinct-cellular-sources-a-comparative-study-based-on-mirna-composition
#14
Scott Ferguson, Sera Kim, Christine Lee, Michael Deci, Juliane Nguyen
Exosomes are nano-sized vesicles composed of lipids, proteins, and nucleic acids. Their molecular landscape is diverse, and exosomes derived from different cell types have distinct biological activities. Since exosomes are now being utilized as delivery vehicles for exogenous therapeutic cargoes, their intrinsic properties and biological effects must be understood. We performed miRNA profiling and found substantial differences in the miRNA landscape of prostate cancer (PC3) and human embryonic kidney (HEK) 293 exosomes with little correlation in abundance of common miRNAs (R2  = 0...
April 30, 2018: AAPS Journal
https://www.readbyqxmd.com/read/29709172/simultaneous-analysis-of-seven-biomarkers-of-oxidative-damage-to-lipids-proteins-and-dna-in-urine
#15
Maria Martinez, Kurunthachalam Kannan
The determination of oxidative stress biomarkers (OSBs) is useful for the assessment of health status and progress of diseases in humans. Whereas previous methods for the determination of OSBs in urine were focused on a single marker, in this study, we present a method for the simultaneous determination of biomarkers of oxidative damage to lipids, proteins, and DNA. Dinitrophenylhydrazine (DNPH) derivatization followed by solid phase extraction (SPE) and high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) allowed the determination of 8-hydroxy-2'-deoxyguanosine (8-OHdG), o-o'-dityrosine (diY), malondialdehyde (MDA), and four isoprostane F2α isomers: 8-iso-prostaglandinF2α (8-PGF2α), 11β-prostaglandinF2α (11-PGF2α), 15-R-prostaglandinF2α (15-PGF2α), and 8-iso,15(R)-prostaglandinF2α (8,15-PGF2α) in urine...
April 30, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29704577/food-drug-interaction-anabolic-steroids-aggravate-hepatic-lipotoxicity-and-nonalcoholic-fatty-liver-disease-induced-by-trans-fatty-acids
#16
Jamili D B Santos, Andrea A S Mendonça, Rafaela C Sousa, Thaiany G S Silva, Solange M Bigonha, Eliziária C Santos, Reggiani V Gonçalves, Romulo D Novaes
Remains unknown if dietary lipids and anabolic steroids (AS) can interact to modify energy metabolism, hepatic structure and function. We investigated the impact of AS on gene expression, lipid profile, redox status and the development of nonalcoholic fatty liver disease (NAFLD) in mice treated with a diet rich in trans fatty acids. Seventy-two C57BL/6 mice were equally randomized into six groups and treated with a standard diet (SD) or high-fat diet (HFD) alone or combined with testosterone cypionate (10 or 20 mg/kg) for 12 weeks...
April 25, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29702662/fenoxycarb-exposure-disrupted-the-reproductive-success-of-the-amphipod-gammarus-fossarum-with-limited-effects-on-the-lipid-profile
#17
Hélène Arambourou, Inmaculada Fuertes, Emmanuelle Vulliet, Gaëlle Daniele, Patrice Noury, Nicolas Delorme, Khedidja Abbaci, Carlos Barata
Insect growth regulator insecticides mimic the action of hormones on the growth and development of insect pests. However, they can affect the development of non-target arthropods. In the present study, we tested the effects of the growth regulator insecticide fenoxycarb on several endpoints in the freshwater crustacean Gammarus fossarum (Amphipoda). Females carrying embryos in their open brood pouch were exposed to 50 μg L-1 fenoxycarb throughout the entire oogenesis (i.e. 21 days). After exposure, newborn individuals from exposed embryos were removed from the maternal open brood pouch for lipidomic analysis, while males were added to assess the reproductive success...
2018: PloS One
https://www.readbyqxmd.com/read/29700110/homo-and-hetero-oligomerization-of-hydrophobic-pulmonary-surfactant-proteins-sp-b-and-sp-c-in-surfactant-phospholipid-membranes
#18
Elisa J Cabré, Marta Martínez-Calle, Manuel Prieto, Alexander Fedorov, Bárbara Olmeda, Luís M S Loura, Jesús Pérez-Gil
Pulmonary surfactant is a lipid/protein mixture that reduces surface tension at the respiratory air-water interface in lungs. Among its non-lipidic components are pulmonary surfactant-associated proteins B and C (SP-B and SP-C, respectively). These highly hydrophobic proteins are required for normal pulmonary surfactant function, and while past literature works have suggested possible SP-B/SP-C interactions and a reciprocal modulation effect, no direct evidence has been yet identified. In this work, we report an extensive fluorescence spectroscopy study of both intramolecular and intermolecular SP-B and SP-C interactions, using a combination of quenching and FRET steady-state and time-resolved methodologies...
April 26, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29694497/nutritional-evaluation-of-non-conventional-vegetables-in-brazil
#19
Luis Felipe Lima E Silva, Douglas C DE Souza, Luciane V Resende, Rita DE Cássia M R Nassur, Carolina Q Samartini, Wilson M Gonçalves
The objective of this study was to characterize the nutritional compounds of interest present in vegetables known as non-conventional, in Brazil. The following evaluations were carried out: antioxidant activity, phenolic compounds, vitamin C, calories, carbohydrates, humidity, lipids, proteins, fiber, acidity and quantification of minerals (P, K, Ca, Mg, S, Cu, Fe, Mn, Zn and B). The species studied were Amaranthus hybridus L., Amaranthus viridis L., Basella alba L., Eryngium campestre L., Hibiscus sabdariffa L...
April 23, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29692653/hptlc-profiling-of-eleutherosides-mechanism-of-antioxidative-action-of-eleutheroside-e1-the-pampa-test-with-lc-ms-detection-and-the-structure-activity-relationship
#20
Daniel Załuski, Rafał Kuźniewski, Zbigniew Janeczko
Human body is constantly generating free radicals, which causes oxidative stress. Despite naturally occurring antioxidant systems in human body, free radicals cause lipid, proteins and DNA oxidation. New antioxidants are still urgent as well as their mechanisms of action should be explained. In this study, we investigated the mechanism by which eleutherosides B, E and E1 may act as antioxidants, identified eleutherosides in Eleutherococcus lasiogyne and Eleutherococcus giraldii , and explained in vitro the absorption of eleutheroside E1 based on passive transport...
March 2018: Saudi Journal of Biological Sciences
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