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https://www.readbyqxmd.com/read/28429991/effects-of-medium-chain-triglycerides-on-intestinal-morphology-and-energy-metabolism-of-intrauterine-growth-retarded-weanling-piglets
#1
Li-Li Zhang, Hao Zhang, Yue Li, Tian Wang
It has been shown that there is a relationship between intrauterine growth retardation (IUGR) and postnatal intestinal damage involved in energy deficits. Therefore, the present study was conducted to investigate the effect of medium-chain triglycerides (MCT) on the intestinal morphology, intestinal function and energy metabolism of piglets with IUGR. At weaning (21 ± 1.1 d of age), 24 IUGR piglets and 24 normal birth weight (NBW) piglets were selected according to their birth weights (BW) (IUGR: 0.95 ± 0...
June 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/28420095/parenteral-nutrition-and-lipids
#2
REVIEW
Maitreyi Raman, Abdulelah Almutairdi, Leanne Mulesa, Cathy Alberda, Colleen Beattie, Leah Gramlich
Lipids have multiple physiological roles that are biologically vital. Soybean oil lipid emulsions have been the mainstay of parenteral nutrition lipid formulations for decades in North America. Utilizing intravenous lipid emulsions in parenteral nutrition has minimized the dependence on dextrose as a major source of nonprotein calories and prevents the clinical consequences of essential fatty acid deficiency. Emerging literature has indicated that there are benefits to utilizing alternative lipids such as olive/soy-based formulations, and combination lipids such as soy/MCT/olive/fish oil, compared with soybean based lipids, as they have less inflammatory properties, are immune modulating, have higher antioxidant content, decrease risk of cholestasis, and improve clinical outcomes in certain subgroups of patients...
April 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28419250/enhanced-glycolysis-regulated-by-hif-1%C3%AE-via-mct-4-promotes-inflammation-in-arsenite-induced-carcinogenesis
#3
Fei Luo, Zhonglan Zou, Xinlu Liu, Min Ling, Qingling Wang, Qi Wang, Lu Lu, Le Shi, Yonglian Liu, Qizhan Liu, Aihua Zhang
Arsenite is well established as a human carcinogen, but the molecular mechanisms leading to arsenite-induced carcinogenesis are complex and elusive. Accelerated glycolysis, a common process in tumor cells called the Warburg effect, is associated with various biological phenomena. However, the role of glycolysis induced by arsenite is unknown. We have found that, with chronic exposure to arsenite, L-02 cells undergo a metabolic shift to glycolysis. In liver cells exposed to arsenite, hypoxia inducible factor-1α (HIF-1α) and monocarboxylate transporter-4 (MCT-4) are over-expressed...
April 17, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28410199/chronic-intratracheal-application-of-the-soluble-guanylyl-cyclase-stimulator-bay-41-8543-ameliorates-experimental-pulmonary-hypertension
#4
Matthieu Amirjanians, Bakytbek Egemnazarov, Akylbek Sydykov, Baktybek Kojonazarov, Ralf Brandes, Himal Luitel, Kabita Pradhan, Johannes-Peter Stasch, Gorden Redlich, Norbert Weissmann, Friedrich Grimminger, Werner Seeger, Hossein Ghofrani, Ralph Schermuly
Dysfunction of the NO/sGC/cGMP signaling pathway has been implicated in the pathogenesis of pulmonary hypertension (PH). Therefore, agents stimulating cGMP synthesis via sGC are important therapeutic options for treatment of PH patients. An unwanted effect of this novel class of drugs is their systemic hypotensive effect. We tested the hypothesis that aerosolized intra-tracheal delivery of the sGC stimulator BAY41-8543 could diminish its systemic vasodilating effect.Pharmacodynamics and -kinetics of BAY41-8543 after single intra-tracheal delivery was tested in healthy rats...
March 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28401952/correlations-in-the-degeneracy-of-structurally-controllable-topologies-for-networks
#5
Colin Campbell, Steven Aucott, Justin Ruths, Derek Ruths, Katriona Shea, Réka Albert
Many dynamic systems display complex emergent phenomena. By directly controlling a subset of system components (nodes) via external intervention it is possible to indirectly control every other component in the system. When the system is linear or can be approximated sufficiently well by a linear model, methods exist to identify the number and connectivity of a minimum set of external inputs (constituting a so-called minimal control topology, or MCT). In general, many MCTs exist for a given network; here we characterize a broad ensemble of empirical networks in terms of the fraction of nodes and edges that are always, sometimes, or never a part of an MCT...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28400261/involvement-of-astrocytic-cyp1a1-isoform-in-the-metabolism-and-toxicity-of-the-alkaloid-pyrrolizidine-monocrotaline
#6
Ravena P Nascimento, Joana L Oliveira, José Leilton C Carvalho, William A Santos, Thyago Rubens C Pires, Maria José M Batatinha, Ramon S El-Bachá, Victor Diógenes A Silva, Silvia L Costa
Monocrotaline (MCT) and its pyrrole derivative, dehydromonocrotaline (DHMC), interact with molecular targets in cells of the central nervous system. DHMC presents higher toxicity than MCT indicating that its metabolism of MCT is a critical step of this alkaloid toxicity. This study sought to elucidate the metabolism and the toxicity of MCT in C6 astrocyte cell line and primary cultures of rat astrocytes by investigating metabolic enzymatic mechanisms of the cytochrome P450 (CYP) system and conjugation with glutathione...
April 8, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28397686/co-option-of-an-endogenous-retrovirus-envelope-for-host-defense-in-hominid-ancestors
#7
Daniel Blanco-Melo, Robert J Gifford, Paul D Bieniasz
Endogenous retroviral sequences provide a molecular fossil record of ancient infections whose analysis might illuminate mechanisms of viral extinction. A close relative of gammaretroviruses, HERV-T, circulated in primates for ~25 million years (MY) before apparent extinction within the past ~8 MY. Construction of a near-complete catalog of HERV-T fossils in primate genomes allowed us to estimate a ~32 MY old ancestral sequence and reconstruct a functional envelope protein (ancHTenv) that could support infection of a pseudotyped modern gammaretrovirus...
April 11, 2017: ELife
https://www.readbyqxmd.com/read/28397201/analysis-of-the-factors-determining-the-type-of-surgical-procedure-in-mature-cystic-teratomas
#8
Alev Özer, Hakan Kıran
OBJECTIVES: It was aimed to evaluate which factors determine the surgical procedure selected by surgeons for cases with mature cystic teratoma (MCT). MATERIAL AND METHODS: This study included 50 cases with histopathologically proven MCT between January 2011 and August 2016 at a tertiary reference hospital. Data related to demographic and clinical characteristics were retrieved from medical records. Multivariate logistic regression analysis was conducted to evaluate the independent factors determining the type of surgical procedure to be applied...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28394354/oncogenic-mct-1-activation-promotes-yy1-egfr-mnsod-signaling-and-tumor-progression
#9
H-Y Tseng, Y-A Chen, J Jen, P-C Shen, L-M Chen, T-D Lin, Y-C Wang, H-L Hsu
Tumor cells often produce high levels of reactive oxygen species (ROS) and display an increased ROS scavenging system. However, the molecular mechanism that balances antioxidative and oxidative stress in cancer cells is unclear. Here, we determined that oncogenic multiple copies in T-cell malignancy 1 (MCT-1) activity promotes the generation of intracellular ROS and mitochondrial superoxide. Overexpression of MCT-1 suppresses p53 accumulation but elevates the manganese-dependent superoxide dismutase (MnSOD) level via the YY1-EGFR signaling cascade, which protects cells against oxidative damage...
April 10, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28393648/-metacognitive-therapy-and-pharmacotherapy-adapted-to-unaccompanied-refugee-minors
#10
Michael Simons, Britta Pöter
Metacognitive Therapy and Pharmacotherapy - Adapted to Unaccompanied Refugee Minors Unaccompanied refugee minors (URM) present a relatively new challenge for adolescent psychotherapy and psychiatry. The evidence of possible treatment approaches is scarce. This paper presents a pragmatic adaptation of Wells' Metacognitive Therapy (MCT) for this population for the first time. Unlike the established trauma-focused treatment approaches MCT does not aim at prolonged exposure to the trauma narrative. Instead, patients shall learn to leave the distressing thoughts alone and to reduce the perseverating thinking processes (rumination and worrying)...
April 2017: Praxis der Kinderpsychologie und Kinderpsychiatrie
https://www.readbyqxmd.com/read/28392417/pharmacological-inhibition-of-carnitine-palmitoyltransferase-1-restores-mitochondrial-oxidative-phosphorylation-in-human-trifunctional-protein-deficient-fibroblasts
#11
Bruno Lefort, Elodie Gouache, Cécile Acquaviva, Marine Tardieu, Jean François Benoist, Jean-François Dumas, Stéphane Servais, Stéphan Chevalier, Christine Vianey-Saban, François Labartheh
BACKGROUND: Mitochondrial Trifunctional Protein deficiency (TFPD) is a severe genetic disease characterized by altered energy metabolism and accumulation of long-chain (LC) acylcarnitines in blood and tissues. This accumulation could impair the mitochondrial oxidative phosphorylation (OxPhos), contributing to the non-optimal outcome despite conventional diet therapy with medium-chain triglycerides (MCT). METHOD: Acylcarnitine and OxPhos parameters were measured in TFPD-fibroblasts obtained from 8 children and cultured in medium mimicking fasting (LCFA) or conventional treatment (MCT), with or without Etomoxir (ETX) an inhibitor of carnitine palmitoyltransferase 1 (CPT1) activity, and were compared to results obtained with fibroblasts from 5 healthy-control children...
April 6, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28391867/ultrasensitive-immunoassay-for-monocrotaline-using-monoclonal-antibody-produced-by-n-n-carbonyldiimidazole-mediated-hapten-carrier-protein-conjugates
#12
Seiichi Sakamoto, Rika Nagamitsu, Gorawit Yusakul, Tomofumi Miyamoto, Hiroyuki Tanaka, Satoshi Morimoto
Monocrotaline (MCT) is a naturally occurring pyrrolizidine alkaloid mainly produced in plant genus Crotalaria (Fabaceae), in which various toxicities have been reported. Recently, demand of quantitative analysis for determination/detection of MCT has increased because MCT in plants can be transferred to human by food chain, leading to intoxication. In this study, monoclonal antibody (MAb) against MCT (MAb 4B8) was produced by unique one-pot conjugation between hydrolysate of MCT, retronecine (RN) and consecutive lysine residues of bovine-serum albumin (BSA) through N,N'-carbonyldiimidazole (CDI) mediated method...
June 1, 2017: Talanta
https://www.readbyqxmd.com/read/28380849/comparative-studies-of-long-wave-laser-induced-breakdown-spectroscopy-emissions-excited-at-1-064-%C3%A2%C2%B5m-and-eye-safe-1-574-%C3%A2%C2%B5m
#13
Ei E Brown, Clayton S-C Yang, Uwe Hommerich, Feng Jin, Sudhir B Trivedi, Alan C Samuels
In this work, comparative long-wave infrared (LWIR) laser-induced breakdown spectroscopy (LIBS) emission studies of two excitation sources: conventional 1.064 μm and eye-safe laser wavelength at 1.574 μm were performed to analyze several widely-used inorganic energetic materials such as ammonium and potassium compounds as well as the organic liquid chemical warfare agent simulant, dimethyl methylphosphate (DMMP). LWIR LIBS emissions generated by both excitation sources were examined using three different detection systems: a single element liquid nitrogen cooled Mercury Cadmium Telluride (MCT) detector, an MCT linear array detection system with multi-channel preamplifiers + integrators, and an MCT linear array detection system with readout integrated circuit...
April 3, 2017: Optics Express
https://www.readbyqxmd.com/read/28374608/long-wave-infrared-lwir-molecular-laser-induced-breakdown-spectroscopy-libs-emissions-of-thin-solid-explosive-powder-films-deposited-on-aluminum-substrates
#14
Clayton S-C Yang, Feng Jin, Sudhir B Trivedi, Ei E Brown, Uwe Hommerich, Ashish Tripathi, Alan C Samuels
Thin solid films made of high nitro (NO2)/nitrate (NO3) content explosives were deposited on sand-blasted aluminum substrates and then studied using a mercury-cadmium-telluride (MCT) linear array detection system that is capable of rapidly capturing a broad spectrum of atomic and molecular laser-induced breakdown spectroscopy (LIBS) emissions in the long-wave infrared region (LWIR; ∼5.6-10 µm). Despite the similarities of their chemical compositions and structures, thin films of three commonly used explosives (RDX, HMX, and PETN) studied in this work can be rapidly identified in the ambient air by their molecular LIBS emission signatures in the LWIR region...
April 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28373627/effects-of-transplanted-human-cord-blood-mononuclear-cells-on-pulmonary-hypertension-in-immunodeficient-mice-and-their-distribution
#15
Mikio Sugano, Homare Yoshida, Hirotsugu Kurobe, Hiroki Arase, Hajime Kinoshita, Takashi Kitaichi, Noriko Sugasawa, Soichiro Nakayama, Kazuhisa Maeda, Minoru Irahara, Tetsuya Kitagawa
OBJECTIVES: To investigate the effects of human umbilical cord blood-derived mononuclear cell (hUCB-MNC) transplantation on pulmonary hypertension (PH) induced by monocrotaline (MCT) in immunodeficient mice and their distribution. METHODS: MCT was administered to BALB/c Slc-nu/nu mice, and PH was induced in mice 4 weeks later. Fresh hUCB-MNCs harvested from a human donor after her delivery were injected intravenously into those PH mice. The medial thickness of pulmonary arterioles, ratio of right ventricular to septum plus left ventricular weight (RV/S+LV), and ratio of acceleration time to ejection time of pulmonary blood flow waveform (AT/ET) were determined 4 weeks after hUCB-MNC transplantation...
2017: Journal of Medical Investigation: JMI
https://www.readbyqxmd.com/read/28373597/mechanical-adaptability-of-sea-cucumber-cuvierian-tubules-involves-a-mutable-collagenous-tissue
#16
Mélanie Demeuldre, Elise Hennebert, Marie Bonneel, Birgit Lengerer, Séverine Van Dyck, Ruddy Wattiez, Peter Ladurner, Patrick Flammang
Despite their soft body and slow motion, sea cucumbers present a low predation rate, reflecting the presence of efficient defence systems. For instance, members of the family Holothuriidae rely on Cuvierian tubules for their defence. These tubules are normally stored in the posterior coelomic cavity of the animal, but when the sea cucumber is threatened by a potential predator, they are expelled through the cloacal aperture, elongate, become sticky and entangle and immobilize the predator in a matter of seconds...
April 3, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28372158/elucidation-of-stabilizing-oil-in-water-pickering-emulsion-with-different-modified-maize-starch-based-nanoparticles
#17
Fan Ye, Ming Miao, Bo Jiang, Osvaldo H Campanella, Zhengyu Jin, Tao Zhang
The aim of present study was to study the medium-chain triacylglycerol-in-water (O/W) Pickering emulsion stabilized using different modified starch-based nanoparticles (octenylsuccinylation treated soluble starch nanoparticle, OSA-SSNP, and insoluble starch nanoparticle, ISNP). The major factors for affecting the system stability, rheological behaviour and microstructure of the emulsions were also investigated. The parameters of the O/W emulsions stabilized by OSA-SSNP or ISNP were selected as follows: 3.0% of starch nanoparticles concentration, 50% of MCT fraction and 7...
August 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28370831/elevated-preoperative-neutrophil-lymphocyte-ratio-as-a-preoperative-indicator-of-mature-cystic-teratoma-with-malignant-transformation
#18
Yoshiko Nanki, Tatsuyuki Chiyoda, Fumio Kataoka, Hiroyuki Nomura, Naoki Nakadaira, Naomi Iwasa, Shiho Hashimoto, Hirokazu Arima, Nobuyuki Susumu, Daisuke Aoki
AIM: To examine the usefulness of the neutrophil : lymphocyte (N/L) ratio as a cost-effective and simple diagnostic marker of mature cystic teratoma (MCT) with malignant transformation (MT). METHODS: A retrospective chart review was performed between 1998 and 2013 of 12 MCT patients with MT and between 2009 and 2013 of 130 patients with benign MCT. Data were collected on age, tumor size, white blood cell count with differential counts, tumor marker levels, and presenting features...
March 28, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28370673/generation-of-monoclonal-antibodies-against-mitocryptide-2-toward-a-new-strategy-to-investigate-the-biological-roles-of-cryptides
#19
Tatsuya Hattori, Takenori Yamada, Hiroki Morikawa, Takayuki Marutani, Koki Tsutsumi, Kodai Nishino, Toshihiro Shimizu, Yoshisuke Nishi, Yoshiaki Kiso, Hidehito Mukai
We recently identified a novel family of neutrophil-activating peptides including mitocryptide-1 and mitocryptide-2 (MCT-2) that are endogenously produced from various mitochondrial proteins. Among them, MCT-2 is an N-formylated pentadecapeptide derived from mitochondrial cytochrome b and is found to promote neutrophilic migration and phagocytosis efficiently. Signaling mechanisms of neutrophil activation by MCT-2 have been investigated at the cellular level, and MCT-2 has been demonstrated to be an endogenous specific ligand for formyl peptide receptor-2 (also referred to as formyl peptide receptor-like 1)...
March 29, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28368405/connexin-43-channels-are-a-pathway-for-discharging-lactate-from-glycolytic-pancreatic-ductal-adenocarcinoma-cells
#20
T H Dovmark, M Saccomano, A Hulikova, F Alves, P Swietach
Glycolytic cancer cells produce large quantities of lactate that must be removed to sustain metabolism in the absence of oxidative phosphorylation. The only venting mechanism described to do this at an adequate rate is H(+)-coupled lactate efflux on monocarboxylate transporters (MCTs). Outward MCT activity is, however, thermodynamically inhibited by extracellular acidity, a hallmark of solid tumours. This inhibition would feedback unfavourably on metabolism and growth, raising the possibility that other venting mechanisms become important in under-perfused tumours...
April 3, 2017: Oncogene
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