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https://www.readbyqxmd.com/read/29148251/the-enzymatic-detoxification-of-the-mycotoxin-deoxynivalenol-identification-of-depa-from-the-don-epimerization-pathway
#1
Jason Carere, Yousef I Hassan, Dion Lepp, Ting Zhou
The biological detoxification of mycotoxins, including deoxynivalenol (DON), represents a very promising approach to address the challenging problem of cereal grain contamination. The recent discovery of Devosia mutans 17-2-E-8 (Devosia spp. 17-2-E-8), a bacterial isolate capable of transforming DON to the non-toxic stereoisomer 3-epi-deoxynivalenol, along with earlier reports of bacterial species capable of oxidizing DON to 3-keto-DON, has generated interest in the possible mechanism and enzyme(s) involved...
November 17, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/29147515/stereochemistry-and-biological-activity-of-chlorinated-lipids-a-study-of-danicalipin-a-and-selected-diastereomers
#2
J Boshkow, S Fischer, A M Bailey, S Wolfrum, E M Carreira
The syntheses of (+)-16-epi- and (+)-11,15-di-epi-danicalipin A (2 and 3) are reported. The conformations of the parent diols 5 and 6 as well as the corresponding disulfates 2 and 3 were determined on the basis of J-based configuration analysis and supported by calculations. The impact of configuration on membrane permeability in Gram-negative bacteria and mammalian cell lines was assessed as well as cytotoxicity. Although diastereomer 2 showed similar behavior to natural (+)-danicalipin A (1), strikingly, the more flexible C11,C15-epimer 3 had no effect on permeability and proved equally or more toxic towards multiple cell lines...
October 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29146106/the-hydrophobic-trap-the-achilles-heel-of-rnd-efflux-pumps
#3
Zachary Aron, Timothy J Opperman
Resistance-nodulation-division (RND) superfamily efflux pumps play a major role in multidrug resistance (MDR) of Gram-negative pathogens by extruding diverse classes of antibiotics from the cell. There has been considerable interest in developing efflux pump inhibitors (EPIs) of RND pumps as adjunctive therapies. The primary challenge in EPI discovery has been the highly hydrophobic, poly-specific substrate binding site of the target. Recent findings have identified the hydrophobic trap, a narrow phenylalanine-lined groove in the substrate-binding site, as the "Achilles heel" of the RND efflux pumps...
November 13, 2017: Research in Microbiology
https://www.readbyqxmd.com/read/29145841/rehabilitation-for-cancer-patients-at-black-lion-hospital-addis-ababa-ethiopia-a-cross-sectional-study
#4
Teshager Worku, Zuriash Mengistu, Agumasie Semahegn, Gezahegn Tesfaye
BACKGROUND: In Ethiopia, there were greater than 2000 adult and 200 pediatric cancer patients annually in 2010, but the estimated number of cancer patients were increasing. Oncologic rehabilitation treatment may result in improved physical and mental impairment. There is a paucity of information about rehabilitation service utilization among cancer patients in Ethiopia. Hence, the purpose of this study was to assess the rehabilitation service for cancer patient and associated factors at Black Lion hospital, Addis Ababa, Ethiopia...
November 16, 2017: BMC Palliative Care
https://www.readbyqxmd.com/read/29145764/plasma-corticosterone-epinephrine-and-norepinephrine-levels-increase-during-administration-of-nitrous-oxide-in-rats
#5
Salwa Al-Noori, Andreas Cimpan, Zoe Maltzer, Karl J Kaiyala, Douglas S Ramsay
Nitrous oxide (N2O) is a gaseous drug with abuse potential. Despite its common clinical use, little is known about whether N2O administration activates the HPA axis and/or the sympathetic adrenomedullary system. The goal of this study was to determine whether 60% N2O alters plasma concentrations of corticosterone (CORT), epinephrine (EPI), and norepinephrine (NE) in male Long-Evans rats. A gas-tight swivel assembly in the lid of a gas administration chamber allowed the remote collection of blood samples from an indwelling jugular vein catheter at four time-points: baseline and at 30, 60, and 120 min during a two-hour administration of 60% N2O...
November 16, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/29143997/epidermal-neural-crest-stem-cell-derived-glia-enhance-neurotrophic-elements-in-an-ex-vivo-model-of-spinal-cord-injury
#6
Sareh Pandamooz, Mohammad Saied Salehi, Mohammad Ismail Zibaii, Abolhassan Ahmadiani, Mohammad Nabiuni, Leila Dargahi
Growing evidence that cell-based therapies can improve recovery outcome in spinal cord injury (SCI) models substantiates their application for treatment of human with SCI. To address the effectiveness of these stem cells, potential candidates should be evaluated in proper SCI platform that allows direct real-time monitoring. In this study, the role of epidermal neural crest stem cells (EPI-NCSCs) was elucidated in an ex vivo model of SCI and valproic acid (VPA) was administered to ameliorate the inhospitable context of injury for grafted EPI-NCSCs...
November 16, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29141638/diffusion-weighted-imaging-of-the-brains-of-dogs-with-idiopathic-epilepsy
#7
Antje Hartmann, Steffen Sager, Klaus Failing, Marion Sparenberg, Martin J Schmidt
BACKGROUND: Idiopathic epilepsy is one of the most common neurological disorders in dogs. Unfortunately, up to 30% of dogs with idiopathic epilepsy show no improvement under antiepileptic drug treatment. Diffusion-weighted imaging is used in human medicine to identify epileptogenic foci in the brain to allow for more invasive treatments such as deep brain stimulation or surgical removal. The aim of this study was to ass the feasibility of interictal diffusion-weighted MRI in dogs and to evaluate the distribution of diffusion in the brains of dogs with idiopathic epilepsy (IE) and to compare these values to previously published values from healthy beagle dogs...
November 15, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29141349/-evaluation-and-application-of-estimation-of-glomerular-filtration-rate-based-on-serum-creatinine-and-cystatin-c-in-renal-function-staging
#8
Z X Shen, Y Liu, M Liu, H Zheng, X J Wu, C Shen
Objective: To evaluate the accordance of chronic kidney disease (CKD) staging between the CKD-EPI2009 equation, the CKD-EPI2012 equation and the modification of diet in renal disease (MDRD) equation and compare the predictive value of common cardiovascular disease. Methods: A total of 11 151 adults from Jurong area, Jiangsu province, were surveyed from September to November in 2015 and their serum creatinine and cystatin C were detected. The glomerular filtration rate (GFR) was estimated by three equations...
November 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/29138408/both-nodal-signalling-and-stochasticity-select-for-prospective-distal-visceral-endoderm-in-mouse-embryos
#9
Katsuyoshi Takaoka, Hiromi Nishimura, Hiroshi Hamada
Anterior-posterior (A-P) polarity of mouse embryos is established by distal visceral endoderm (DVE) at embryonic day (E) 5.5. Lefty1 is expressed first at E3.5 in a subset of epiblast progenitor cells (L1(epi) cells) and then in a subset of primitive endoderm cells (L1(dve) cells) fated to become DVE. Here we studied how prospective DVE cells are selected. Lefty1 expression in L1(epi) and L1(dve) cells depends on Nodal signaling. A cell that experiences the highest level of Nodal signaling begins to express Lefty1 and becomes an L1(epi) cell...
November 14, 2017: Nature Communications
https://www.readbyqxmd.com/read/29137234/the-af4-mll-fusion-transiently-augments-multilineage-hematopoietic-engraftment-but-is-not-sufficient-to-initiate-leukemia-in-cord-blood-cd34-cells
#10
Cristina Prieto, Rolf Marschalek, Alessa Kühn, Adelheid Bursen, Clara Bueno, Pablo Menéndez
The translocation t(4;11)(q21;q23) is the hallmark genetic abnormality associated with infant pro-B acute lymphoblastic leukemia (B-ALL) and has the highest frequency of rearrangement in Mixed-lineage leukemia (MLL) leukemias. Unlike other MLL translocations, MLL-AF4-induced proB-ALL is exceptionally difficult to model in mice/humans. Previous work has investigated the relevance of the reciprocal translocation fusion protein AF4-MLL for t(4;11) leukemia, finding that AF4-MLL is capable of inducing proB-ALL without requirement for MLL-AF4 when expressed in murine hematopoietic stem/progenitor cells (HSPCs)...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137111/effect-of-omega-3-fatty-acid-supplementation-on-plasma-fibroblast-growth-factor-23-levels-in-post-myocardial-infarction-patients-with-chronic-kidney-disease-the-alpha-omega-trial
#11
Martin H de Borst, Leandro C Baia, Ellen K Hoogeveen, Erik J Giltay, Gerjan Navis, Stephan J L Bakker, Johanna M Geleijnse, Daan Kromhout, Sabita S Soedamah-Muthu
Fibroblast growth factor 23 (FGF23) is an independent risk factor for cardiovascular mortality in chronic kidney disease. Omega-3 (n-3) fatty acid consumption has been inversely associated with FGF23 levels and with cardiovascular risk. We examined the effect of marine n-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) and plant-derived alpha-linolenic acid (ALA) on plasma FGF23 levels in post-myocardial infarction patients with chronic kidney disease. In the randomized double-blind Alpha Omega Trial, 4837 patients with a history of myocardial infarction aged 60-80 years (81% men) were randomized to one of four trial margarines supplemented with a targeted additional intake of 400 mg/day EPA and DHA, 2 g/day ALA, EPA-DHA plus ALA, or placebo for 41 months...
November 11, 2017: Nutrients
https://www.readbyqxmd.com/read/29136724/-expert-consensus-for-the-diagnosis-and-treatment-of-patients-with-renal-impairment-of-multiple-myeloma
#12
(no author information available yet)
Renal impairment (RI) is a common complication of multiple myeloma (MM), which is presented as chronic kidney disease (CKD) or acute kidney injury (AKI). The typical pathological feature is cast nephropathy. Presently international system staging (ISS) is used in evaluating MM. Although the classic Durie-Salmon staging system could be still used in clinical practice, it may miss out some patients with renal impairment. For evaluations of RI in MM patients with CKD, it's recommended to assess the estimated glomerular filtration rate (eGFR) by creatinine based formula CKD-epidemiology collaboration (EPI) or modification of diet in renal disease(MDRD) and to stage the renal injuries according to 2013 Kidney Disease Improving Global Outcomes (KDIGO) CKD guidelines...
November 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29135252/neo-clerodane-diterpenoids-from-salvia-polystachya-stimulate-the-expression-of-extracellular-matrix-components-in-human-dermal-fibroblasts
#13
Elihú Bautista, Naytzé Ortiz-Pastrana, Guillermo Pastor-Palacios, Angélica Montoya-Contreras, Rubén A Toscano, Jesús Morales-Jiménez, Luis A Salazar-Olivo, Alfredo Ortega
Eleven neo-clerodane diterpenoids (1-11) including the new analogues 1, 2, and 10, and 3',5,6,7-tetrahydroxy-4'-methoxyflavone (12) were isolated from the aerial parts of Salvia polystachya. Polystachyne G (1) and 15-epi-polystachyne G (2) were isolated as an epimeric mixture, containing a 5-hydroxyfuran-2(5H)-one unit in the side chain at C-12 of the neo-clerodane framework. Polystachyne H (10) contains a 1(10),2-diene moiety and a tertiary C-4 hydroxy group. The structures of these compounds were established by analysis of their NMR spectroscopic and MS spectrometric data...
November 14, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29133974/higher-order-optical-aberrations-and-visual-acuity-in-a-randomized-controlled-trial-comparing-transepithelial-versus-epithelium-off-corneal-crosslinking-for-progressive-keratoconus
#14
Daniel A Godefrooij, Mustapha El Kandoussi, Nienke Soeters, Robert Pl Wisse
Purpose: The purpose of this study was to compare the effects of transepithelial crosslinking (trans-CXL) versus epithelium-off crosslinking (epi-off CXL) for progressive keratoconus with respect to the development of higher order aberrations (HOAs) and their effects on visual acuity. Materials and methods: A total of 61 patients were randomized and examined preoperatively and 1, 3, 6, and 12 months postoperatively in an academic referral center. Total corneal HOAs were compared between the two treatment groups using mixed linear modeling...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29133631/mitochondrial-genetics-and-therapeutic-overview-of-leber-s-hereditary-optic-neuropathy
#15
REVIEW
Agaath Hedina Manickam, Minu Jenifer Michael, Sivasamy Ramasamy
Leber's hereditary optic neuropathy (LHON) is a common inherited mitochondrial disorder that is characterized by the degeneration of the optic nerves, leading to vision loss. The major mutations in the mitochondrial genes ND1, ND4, and ND6 of LHON subjects are found to increase the oxidative stress experienced by the optic nerve cell, thereby leading to nerve cell damage. Accurate treatments are not available and drugs that are commercially available like Idebenone, EPI-743, and Bendavia with their antioxidant role help in reducing the oxidative stress experienced by the cell thereby preventing the progression of the disease...
November 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29132037/flunixin-meglumine-improves-pregnancy-rate-in-embryo-recipient-beef-cows-with-an-excitable-temperament
#16
R K Kasimanickam, J B Hall, C T Estill, J P Kastelic, C Joseph, R L Abdel Aziz, D Nak
Objectives were to determine effects of: 1) handling temperament and administration of flunixin meglumine, an inhibitor of prostaglandin F2a (PGF2a) synthesis, given at the time of embryo transfer, on pregnancy rates in beef cattle embryo transfer recipients; 2) handling temperament and flunixin meglumine on peripheral concentrations of progesterone, cortisol, substance-P, prostaglandin F metabolites (PGFM, (13,14-dihydro-15-keto-PGF2a) and isoprostane 8-epi PGF2a; and 3) flunixin meglumine treatment on proportion of non-pregnant recipient cows returning to estrus within an expected interval...
November 10, 2017: Theriogenology
https://www.readbyqxmd.com/read/29130419/recapitulation-of-native-dermal-tissue-in-a-full-thickness-human-skin-model-using-human-collagens
#17
Arnout Mieremet, Marion Rietveld, Rianne van Dijk, Joke A Bouwstra, Abdoelwaheb El Ghalbzouri
OBJECTIVE: Full thickness skin models are comprised of a three dimensional dermal equivalent based on an animal derived collagen matrix that harbours fibroblasts and an epidermal equivalent formed by keratinocytes. The functionality of both equivalents is influenced by many factors, including extracellular matrix composition and resident cell type. Animal-derived collagens differ in amino acid composition and physico-chemical properties from human collagens. This composition could alter the functionality of the dermal equivalent and epidermal morphogenesis with the barrier formation in full thickness models (FTMs)...
November 12, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29129193/experiences-of-three-states-implementing-the-medicaid-health-home-model-to-address-opioid-use-disorder-case-studies-in-maryland-rhode-island-and-vermont
#18
Lisa Clemans-Cope, Jane B Wishner, Eva H Allen, Nicole Lallemand, Marni Epstein, Brenda C Spillman
PURPOSE: The United States is facing an unprecedented opioid epidemic. The Affordable Care Act (ACA) included several provisions designed to increase care coordination in state Medicaid programs and improve outcomes for those with chronic conditions, including substance use disorders. Three states-Maryland, Rhode Island, and Vermont - adopted the ACA's optional Medicaid health home model for individuals with opioid use disorder. The model coordinates opioid use disorder treatment that features opioid agonist therapy provided at opioid treatment programs (OTPs) and Office-based Opioid Treatment (OBOT) with medical and behavioral health care and other services, including those addressing social determinants of health...
December 2017: Journal of Substance Abuse Treatment
https://www.readbyqxmd.com/read/29128561/infraciliature-of-opisthotrichum-janus-epidinium-ecaudatum-and-ophryoscolex-purkynjei-ciliophora-entodiniomorphida
#19
Akira Ito, Toshihiro Tokiwa
We described the infraciliature of Opisthotrichum janus, Epidinium ecaudatum, and Ophryoscolex purkynjei, belonging to the family Ophryoscolecidae, from pyridinated silver carbonate impregnated specimens. The adoral polybrachykinety is C-shaped in Opi. janus, whereas it is spiral-shaped in Epi. ecaudatum and Oph. purkynjei. The vestibular polybrachykinety is slender and short in Opi. janus, whereas slender and long in Epi. ecaudatum and Oph. purkynjei. The paralabial kineties are composed of several short kineties along the adoral polybrachykinety...
October 20, 2017: European Journal of Protistology
https://www.readbyqxmd.com/read/29126990/a-proanthocyanidin-rich-extract-from-cassia-abbreviata-exhibits-antioxidant-and-hepatoprotective-activities-in-vivo
#20
Mansour Sobeh, Mona F Mahmoud, Mohamed A O Abdelfattah, Haroan Cheng, Assem M El-Shazly, Michael Wink
ETHNOPHARMACOLOGICAL RELEVANCE: Cassia abbreviata is a small to medium sized branched umbrella-shaped deciduous tree. It is widely spread in the tropics, especially in Africa, having a long history in traditional medicine for the treatment of numerous conditions such as headaches, diarrhea, constipation, some skin diseases, malaria, syphilis, pneumonia, stomach troubles, uterine pains, and against gonorrhea. AIM OF THE STUDY: We investigated the phytochemical constituents of a root extract from Cassia abbreviata using HPLC-PDA-ESI-MS/MS...
November 7, 2017: Journal of Ethnopharmacology
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