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https://www.readbyqxmd.com/read/28432550/estradiol-mitigates-ischemia-reperfusion-induced-acute-renal-failure-through-nmda-receptor-antagonism-in-rats
#1
Amrit Pal Singh, Nirmal Singh, Preet Mohinder Singh Bedi
In the present study, we investigated possible involvement of N-methyl-D-aspartate receptors (NMDAR) in estradiol mediated protection against ischemia reperfusion (I/R)-induced acute renal failure (ARF) in rats. Bilateral renal ischemia of 40 min followed by reperfusion for 24 h induced ARF in male wistar rats. Quantification of serum creatinine, creatinine clearance (CrCl), blood urea nitrogen (BUN), uric acid, potassium, fractional excretion of sodium (FeNa), and urinary microproteins was done to assess I/R-induced renal damage in rats...
April 21, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28430286/clinical-presentation-and-outcomes-of-patients-with-acute-rheumatic-fever-and-rheumatic-heart-disease-seen-at-a-tertiary-hospital-setting-in-port-elizabeth-south-africa
#2
Zongezile Masonwabe Makrexeni, Lungile Pepeta
BACKGROUND: The incidence of acute rheumatic fever (ARF) and rheumatic heart disease (RHD) has waned in Western countries, however that is not the situation in developing nations. METHODS: Records were reviewed of patients from the Eastern Cape municipal districts who presented to the Paediatric Cardiology Unit with ARF and RHD from January 2008 to August 2015. RESULTS: Total of 56 patients with ARF/RHD was reviewed. The majority of patients (n = 52) presented for the first time with RHD...
April 20, 2017: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/28430047/arf-gaps-and-molecular-motors
#3
Ruibai Luo, Christine E Reed, Jeffrey A Sload, Linda Wordeman, Paul A Randazzo, Pei-Wen Chen
Arf GTPase-activating proteins (Arf GAPs) were first identified as regulators of the small GTP-binding proteins ADP-ribosylation factors (Arfs). The Arf GAPs are a large family of proteins in metazoans, outnumbering the Arfs that they regulate. The members of the Arf GAP family have complex domain structures and some have been implicated in particular cellular functions, such as cell migration, or with particular pathologies, such as tumor invasion and metastasis. The specific effects of Arfs sometimes depend on the Arf GAP involved in their regulation...
April 21, 2017: Small GTPases
https://www.readbyqxmd.com/read/28426630/outer-nuclear-layer-thinning-in-pachychoroid-pigment-epitheliopathy
#4
M Giray Ersoz, Murat Karacorlu, Serra Arf, Mumin Hocaoglu, Isil Sayman Muslubas
PURPOSE: To compare the average thicknesses of central inner retinal layers in eyes with pachychoroid pigment epitheliopathy (PPE), with uncomplicated pachychoroid (UCP), and of healthy subjects. METHODS: Medical records of patients with PPE and UCP were retrospectively reviewed. Twenty-nine eyes with foveal PPE, 30 eyes with UCP, and 29 eyes of healthy subjects were included. Spectral-domain optical coherence tomography with enhanced depth imaging was used for all optical coherence tomography scans...
April 19, 2017: Retina
https://www.readbyqxmd.com/read/28422919/the-lung-rescue-unit-lru-does-a-dedicated-intensive-care-unit-for-veno-venous-extra-corporeal-membrane-oxygenation-vv-ecmo-improve-survival-to-discharge
#5
Jay Menaker, Katelyn Dolly, Raymond Rector, Joseph Kufera, Eugenia E Lee, Ali Tabatabai, Ronald P Rabinowitz, Zachary Kon, Pablo Sanchez, Si Pham, Daniel L Herr, James V O'Connor, Deborah M Stein, Thomas M Scalea
BACKGROUND: The use of veno-venous extra corporeal membrane oxygenation (VV ECMO) for acute respiratory failure/distress syndrome (ARF/ARDS) has increased since 2009. Specialized units for patients requiring VV ECMO are not standard and patients are often cohorted with other critically ill patients. The purpose of this study was to report the outcome of adult patients admitted in 2015 to the LRU, which, to our knowledge, is the first intensive care unit in the United States that has been specifically created to provide care for patients requiring VV ECMO...
April 18, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28421097/development-of-incompletely-fused-carpels-in-maize-ovary-revealed-by-mirna-target-gene-and-phytohormone-analysis
#6
Hongping Li, Ting Peng, Qun Wang, Yufeng Wu, Jianfeng Chang, Moubiao Zhang, Guiliang Tang, Chaohai Li
Although the molecular basis of carpel fusion in maize ovary development remains largely unknown, increasing evidence suggests a critical role of microRNAs (miRNAs). In this study, a combination of miRNA sequencing, degradome and physiological analyses was used to characterize carpel fusion development in maize ovaries showing incompletely (IFC) and completely fused carpels (CFC). A total of 162 known miRNAs distributed across 33 families were identified, of which 20 were differentially expressed. In addition, 53 miRNA candidates were identified, of which 10 were differentially expressed in the IFC and CFC ovaries...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28418604/loss-of-ink4a-arf-gene-enhances-ultraviolet-radiation-induced-cutaneous-tumor-development
#7
Israr Ahmad, Purushotham Guroji, Amanda H DeBrot, Padma P Manapragada, Santosh K Katiyar, Craig A Elmets, Nabiha Yusuf
The CDKN2A locus encodes for tumor suppressor genes p16(INK)(4a) and p14(Arf) which are frequently inactivated in human skin tumors. The purpose of this study was to determine the relationship between loss of INK4a/Arf activity and inflammation in the development of ultraviolet (UV) radiation-induced skin tumors. Panels of INK4a/Arf(-/-) mice and wild type (WT) mice were treated with a single dose of UVB (200 mJ/cm(2) ). For long-term studies, these mice were irradiated with UVB (200 mJ/cm(2) ) three times weekly for 30 weeks...
April 18, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28414797/big1-is-required-for-the-survival-of-deep-layer-neurons-neuronal-polarity-and-the-formation-of-axonal-tracts-between-the-thalamus-and-neocortex-in-developing-brain
#8
Jia-Jie Teoh, Tomohiko Iwano, Masataka Kunii, Nur Atik, Erda Avriyanti, Shin-Ichiro Yoshimura, Kenta Moriwaki, Akihiro Harada
BIG1, an activator protein of the small GTPase, Arf, and encoded by the Arfgef1 gene, is one of candidate genes for epileptic encephalopathy. To know the involvement of BIG1 in epileptic encephalopathy, we analyzed BIG1-deficient mice and found that BIG1 regulates neurite outgrowth and brain development in vitro and in vivo. The loss of BIG1 decreased the size of the neocortex and hippocampus. In BIG1-deficient mice, the neuronal progenitor cells (NPCs) and the interneurons were unaffected. However, Tbr1+ and Ctip2+ deep layer (DL) neurons showed spatial-temporal dependent apoptosis...
2017: PloS One
https://www.readbyqxmd.com/read/28410007/key-roles-of-arf-small-g-proteins-and-biosynthetic-trafficking-for-animal-development
#9
Francisco F Rodrigues, Tony J C Harris
Although biosynthetic trafficking can function constitutively, it also functions specifically for certain developmental processes. These processes require either a large increase to biosynthesis or the biosynthesis and targeted trafficking of specific players. We review the conserved molecular mechanisms that direct biosynthetic trafficking, and discuss how their genetic disruption affects animal development. Specifically, we consider Arf small G proteins, such as Arf1 and Sar1, and their coat effectors, COPI and COPII, and how these proteins promote biosynthetic trafficking for cleavage of the Drosophila embryo, the growth of neuronal dendrites and synapses, extracellular matrix secretion for bone development, lumen development in epithelial tubes, notochord and neural tube development, and ciliogenesis...
April 14, 2017: Small GTPases
https://www.readbyqxmd.com/read/28406729/stabilization-of-the-p53-dna-complex-by-the-nuclear-protein-dmp1%C3%AE
#10
Robert D Kendig, Fumitake Kai, Elizabeth A Fry, Kazushi Inoue
We recently reported the existence of a physical interaction between the Myb-like transcription factor Dmp1 (Dmtf1) and p53 in which Dmp1 antagonized polyubiquitination of p53 by Mdm2 and promoted its nuclear localization. Dmp1 significantly stabilized p53-DNA complexes on promoters that contained p53-consensus sequences, which were either supershifted or disrupted with antibodies to Dmp1. Lysates from mice injected with doxorubicin showed that Dmp1 bound to p21(Cip1), Bbc3, and Thbs1 gene regulatory regions in a p53-dependent fashion...
April 13, 2017: Cancer Investigation
https://www.readbyqxmd.com/read/28394987/-acute-glomerulonephritis-with-hemodialysis-requirement-secondary-to-influenza-a-h1n1pdm09-infection-report-of-two-cases
#11
Diana Aceituno, Alberto Fica, Rodrigo Fasce, Winston Andrade, Carolina Díaz
Acute renal failure (ARF) requiring hemodialysis is not common among patients affected by influenza. We report two unvaccinated adult patients with smoking habit, which were admitted with severe influenza A H1N1pdm09 that evolved with shock and required mechanical ventilation. Both patients developed progressive renal failure with oliguria/anuria, associated with urinary of inflammatory sediment with proteinuria, microhematuria and in one case also with hypocomplementemia, suggesting acute glomerulonephritis...
February 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28394357/loss-of-lzap-inactivates-p53-and-regulates-sensitivity-of-cells-to-dna-damage-in-a-p53-dependent-manner
#12
J J Wamsley, C Gary, A Biktasova, M Hajek, G Bellinger, R Virk, N Issaeva, W G Yarbrough
Chemotherapy and radiation, the two most common cancer therapies, exert their anticancer effects by causing damage to cellular DNA. However, systemic treatment damages DNA not only in cancer, but also in healthy cells, resulting in the progression of serious side effects and limiting efficacy of the treatment. Interestingly, in response to DNA damage, p53 seems to play an opposite role in normal and in the majority of cancer cells-wild-type p53 mediates apoptosis in healthy tissues, attributing to the side effects, whereas mutant p53 often is responsible for acquired cancer resistance to the treatment...
April 10, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28392976/an-automated-reference-frame-selection-arfs-algorithm-for-cone-imaging-with-adaptive-optics-scanning-light-ophthalmoscopy
#13
Alexander E Salmon, Robert F Cooper, Christopher S Langlo, Ahmadreza Baghaie, Alfredo Dubra, Joseph Carroll
PURPOSE: To develop an automated reference frame selection (ARFS) algorithm to replace the subjective approach of manually selecting reference frames for processing adaptive optics scanning light ophthalmoscope (AOSLO) videos of cone photoreceptors. METHODS: Relative distortion was measured within individual frames before conducting image-based motion tracking and sorting of frames into distinct spatial clusters. AOSLO images from nine healthy subjects were processed using ARFS and human-derived reference frames, then aligned to undistorted AO-flood images by nonlinear registration and the registration transformations were compared...
April 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28389568/hepatitis-c-virus-triggers-golgi-fragmentation-and-autophagy-through-the-immunity-related-gtpase-m
#14
Marianne D Hansen, Ingvild B Johnsen, Kim A Stiberg, Tatyana Sherstova, Takaji Wakita, Gabriel Mary Richard, Richard K Kandasamy, Eliane F Meurs, Marit W Anthonsen
Positive-stranded RNA viruses, such as hepatitis C virus (HCV), assemble their viral replication complexes by remodeling host intracellular membranes to a membranous web. The precise composition of these replication complexes and the detailed mechanisms by which they are formed are incompletely understood. Here we show that the human immunity-related GTPase M (IRGM), known to contribute to autophagy, plays a previously unrecognized role in this process. We show that IRGM is localized at the Golgi apparatus and regulates the fragmentation of Golgi membranes in response to HCV infection, leading to colocalization of Golgi vesicles with replicating HCV...
April 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28388616/the-evolution-of-sex-linked-barring-alleles-in-chickens-involves-both-regulatory-and-coding-changes-in-cdkn2a
#15
Doreen Schwochow Thalmann, Henrik Ring, Elisabeth Sundström, Xiaofang Cao, Mårten Larsson, Susanne Kerje, Andrey Höglund, Jesper Fogelholm, Dominic Wright, Per Jemth, Finn Hallböök, Bertrand Bed'Hom, Ben Dorshorst, Michèle Tixier-Boichard, Leif Andersson
Sex-linked barring is a fascinating plumage pattern in chickens recently shown to be associated with two non-coding and two missense mutations affecting the ARF transcript at the CDKN2A tumor suppressor locus. It however remained a mystery whether all four mutations are indeed causative and how they contribute to the barring phenotype. Here, we show that Sex-linked barring is genetically heterogeneous, and that the mutations form three functionally different variant alleles. The B0 allele carries only the two non-coding changes and is associated with the most dilute barring pattern, whereas the B1 and B2 alleles carry both the two non-coding changes and one each of the two missense mutations causing the Sex-linked barring and Sex-linked dilution phenotypes, respectively...
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28386458/reestablishment-of-p53-arf-and-interferon-%C3%AE-pathways-mediated-by-a-novel-adenoviral-vector-potentiates-antiviral-response-and-immunogenic-cell-death
#16
Aline Hunger, Ruan Fv Medrano, Daniela B Zanatta, Paulo R Del Valle, Christian A Merkel, Thiago de Almeida Salles, Daniel G Ferrari, Tatiane K Furuya, Silvina O Bustos, Renata de Freitas Saito, Eugenia Costanzi-Strauss, Bryan E Strauss
No abstract text is available yet for this article.
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28376706/cardiovascular-risk-reduction-is-important-for-improving-patient-and-graft-survival-after-ligation-and-bypass-surgery-for-popliteal-artery-aneurysm
#17
N Dattani, M Ali, A Aber, R Yap Kannan, E C Choke, M J Bown, R D Sayers, R S Davies
OBJECTIVES: To report outcomes following ligation and bypass (LGB) surgery for popliteal artery aneurysm (PAA) and study factors influencing patient and graft survival. MATERIALS AND METHODS: A retrospective review of patients undergoing LGB surgery for PAA between September 1999 and August 2012 at a tertiary referral vascular unit was performed. Primary graft patency (PGP), primary-assisted graft patency (PAGP), and secondary graft patency (SGP) rates were calculated using survival analyses...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28376034/rapid-discontinuation-of-prednisone-in-kidney-transplant-recipients-15-year-outcomes-from-the-university-of-minnesota
#18
Oscar Kenneth Serrano, Raja Kandaswamy, Kristen Gillingham, Srinath Chinnakotla, Ty B Dunn, Erik Finger, William Payne, Hassan Ibrahim, Aleksandra Kukla, Richard Spong, Naim Issa, Timothy L Pruett, Arthur Matas
BACKGROUND: Short- and intermediate-term results have been reported after rapid discontinuation of prednisone (RDP) in kidney transplant recipients. Yet there has been residual concern about late graft failure in the absence of maintenance prednisone. METHODS: From October 1, 1999, through June 1, 2015, we performed a total of 1553 adult 1st and 2nd kidney transplants-1021 with a living donor (LD), 532 with a deceased donor (DD)-under our RDP protocol. We analyzed the 15-year actuarial overall patient survival (PS), graft survival (GS), death-censored graft survival (DCGS), and acute rejection-free survival (ARFS) rates for RDP compared to historical controls on maintenance prednisone...
April 3, 2017: Transplantation
https://www.readbyqxmd.com/read/28371775/acoustic-radiation-force-impulse-arfi-induced-peak-displacements-reflect-degree-of-anisotropy-in-transversely-isotropic-elastic-materials
#19
Md Murad Hossain, Christopher Moore, Caterina Gallippi
In transversely isotropic (TI) materials, mechanical properties (Young's modulus, shear modulus, and Poisson's ratio) are different along versus across the axis of symmetry (AoS). In this work, the feasibility of interrogating such directional mechanical property differences using acoustic radiation force impulse (ARFI) imaging is investigated. We herein test the hypotheses that 1) ARFI-induced peak displacements (PDs) vary with TI material orientations when an asymmetrical ARFI excitation point spread function (PSF) is used, but not when a symmetrical ARFI PSF is employed; and 2) the ratio of PDs induced with the long axis of an asymmetrical ARFI PSF oriented along versus across the material's AoS is related to the degree of anisotropy of the material...
March 31, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28368955/combined-carbohydrate-and-protein-ingestion-during-australian-rules-football-matches-and-training-sessions-does-not-reduce-fatigue-or-accelerate-recovery-throughout-a-week-long-junior-tournament
#20
Nathan A Lee, James W Fell, Nathan W Pitchford, Andrew H Hall, Michael D Leveritt, Cecilia M Kitic
Australian Rules football (ARF) is a physically demanding sport that can induce high levels of fatigue. Fatigue may be intensified during periods where multiple matches are played with limited recovery time. Combined carbohydrate and protein (CHO+PRO) intake during physical activity may provide performance and recovery benefits. The aim of this study was to investigate whether CHO+PRO ingestion during ARF matches and training sessions throughout a tournament would enhance performance or recovery in comparison to CHO-only ingestion...
March 31, 2017: Journal of Strength and Conditioning Research
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