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https://www.readbyqxmd.com/read/28642718/irinotecan-induced-gastrointestinal-dysfunction-is-associated-with-enteric-neuropathy-but-increased-numbers-of-cholinergic-myenteric-neurons
#1
Rachel M McQuade, Vanesa Stojanovska, Elizabeth L Donald, Ahmed A Rahman, Dean G Campelj, Raquel Abalo, Emma Rybalka, Joel C Bornstein, Kulmira Nurgali
Gastrointestinal dysfunction is a common side-effect of chemotherapy leading to dose reductions and treatment delays. These side-effects may persist up to 10 years post-treatment. A topoisomerase I inhibitor, irinotecan (IRI), commonly used for the treatment of colorectal cancer, is associated with severe acute and delayed-onset diarrhea. The long-term effects of IRI may be due to damage to enteric neurons innervating the gastrointestinal tract and controlling its functions. Balb/c mice received intraperitoneal injections of IRI (30 mg/kg(-1)) 3 times a week for 14 days, sham-treated mice received sterile water (vehicle) injections...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28630379/the-association-between-telomere-length-and-mortality-in-bangladesh
#2
Samantha G Dean, Chenan Zhang, Jianjun Gao, Shantanu Roy, Justin Shinkle, Mekala Sabarinathan, Maria Argos, Lin Tong, Alauddin Ahmed, Md Tariqul Islam, Tariqul Islam, Muhammad Rakibuz-Zaman, Golam Sarwar, Hasan Shahriar, Mahfuzar Rahman, Md Yunus, Joseph H Graziano, Lin S Chen, Farzana Jasmine, Muhammad G Kibriya, Habibul Ahsan, Brandon L Pierce
Telomeres are tandem repeat sequences at the end of chromosomes that bind proteins to protect chromosome ends. Telomeres shorten with age, and shorter leukocyte telomere length (TL) has been associated with overall mortality in numerous studies. However, this association has not been tested in populations outside of Europe and the U.S. We assessed the association between TL and subsequent mortality using data on 744 mortality cases and 761 age-/sex-matched controls sampled from >27,000 participants from three longitudinal Bangladeshi cohorts: Health Effects of Arsenic Longitudinal Study (HEALS), HEALS Expansion (HEALS-E), and Bangladesh Vitamin E and Selenium Trial (BEST)...
June 15, 2017: Aging
https://www.readbyqxmd.com/read/28619691/a-mouse-model-of-antepartum-stillbirth
#3
Anum Rahman, Lindsay S Cahill, Yu-Qing Zhou, Johnathan Hoggarth, Monique Y Rennie, Mike Seed, Christopher K Macgowan, John C Kingdom, S Lee Adamson, John G Sled
BACKGROUND: Many stillbirths of normally-formed fetuses in the third trimester could be prevented via delivery if reliable means to anticipate this outcome existed. However, since the etiology of these stillbirths is often unexplained and, although the underlying mechanism is presumed to be hypoxia from "placental insufficiency", the placentas often appear normal on histopathologic examination. Gestational age is a risk factor for antepartum stillbirth, with a rapid rise in stillbirth rates after 40 weeks gestation...
June 12, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28599865/estrogen-receptor-%C3%AE-activation-enhances-its-cell-surface-localization-and-improves-myocardial-redox-status-in-ovariectomized-rats
#4
Rebecca J Steagall, Fanrong Yao, Saame Raza Shaikh, Abdel A Abdel-Rahman
AIMS: Little is known about the role of subcellular trafficking of estrogen receptor (ER) subtypes in the acute estrogen (E2)-mediated alleviation of oxidative stress. We tested the hypothesis that ERα migration to the cardiac myocyte membrane mediates the acute E2-dependent improvement of cellular redox status. MAIN METHODS: Myocardial distribution of subcellular ERα, ERβ and G-protein coupled estrogen receptor (GPER) was determined in proestrus sham-operated (SO) and in ovariectomized (OVX) rats, acutely treated with E2 (1μg/kg) or a selective ERα (PPT), ERβ (DPN) or GPER (G1) agonist (10μg/kg), by immunofluorescence and Western blot...
June 6, 2017: Life Sciences
https://www.readbyqxmd.com/read/28590468/the-influence-of-cation-ordering-oxygen-vacancy-distribution-and-proton-siting-on-observed-properties-in-ceramic-electrolytes-the-case-of-scandium-substituted-barium-titanate
#5
Nico Torino, Paul F Henry, Christopher S Knee, Tor Svendsen Bjørheim, Seikh M H Rahman, Emma Suard, Carlotta Giacobbe, Sten G Eriksson
The origin of the 2-order of magnitude difference in the proton conductivity of the hydrated forms of hexagonal and cubic oxygen deficient BaScxTi1-xO3-δ (x = 0.2 and x = 0.7) was probed using a combination of neutron diffraction and density functional theory techniques to support published X-ray diffraction, conductivity, thermogravimetric and differential scanning calorimetry studies. Cation ordering is found in the 6H structure type (space group P63/mmc) adopted by BaSc0.2Ti0.8O3-δ with scandium preferentially substituting in the vertex sharing octahedra (2a crystallographic site) and avoiding the face-sharing octahedra (4f site)...
June 7, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28589497/frequency-of-dendritic-cells-and-their-expression-of-costimulatory-molecules-in-children-with-autism-spectrum-disorders
#6
Khaled Saad, Asmaa M Zahran, Khalid I Elsayh, Ahmed A Abdel-Rahman, Abdulrahman A Al-Atram, Almontaser Hussein, Yasmin G El-Gendy
The aim of our study was to evaluate the frequencies of myeloid dendritic cells (mDCs) and plasmacytoid dendritic cells (pDCs) in children with ASD. Subjects were 32 children with ASD and 30 healthy children as controls. The numbers of mDCs and pDCs and the expression of CD86 and CD80 on the entire DCs were detected by flow cytometry. ASD children had significantly higher percentages of mDCs and pDCs when compared to controls. We found significant inverse relationships between serum 25-hydroxyvitamin D levels and the frequencies of mDCs and pDCs in autistic children...
June 7, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28587626/evaluation-of-a-novel-antibody-to-define-histone-3-3-g34r-mutant-brain-tumours
#7
Farhana Haque, Pascale Varlet, Julien Puntonet, Lisa Storer, Aikaterini Bountali, Ruman Rahman, Jacques Grill, Angel M Carcaboso, Chris Jones, Robert Layfield, Richard G Grundy
Missense somatic mutations affecting histone H3.1 and H3.3 proteins are now accepted as the hallmark of paediatric diffuse intrinsic pontine gliomas (DIPG), non-brain stem paediatric high grade gliomas (pHGG) as well as a subset of adult glioblastoma multiforme (GBM). Different mutations give rise to one of three amino acid substitutions at two critical positions within the histone tails, K27M, G34R/V. Several studies have highlighted gene expression and epigenetic changes associated with histone H3 mutations; however their precise roles in tumourigenesis remain incompletely understood...
June 6, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28584515/circumareolar-incision-subdermal-tunneling-dissection-for-excision-of-multiple-breast-fibroadenomata
#8
S O Agodirin, G A Rahman, S A Olatoke, H J Akande
Excision of multiple fibroadenomas (MF) in separate breast quadrants presents difficulties of number and location of incision(s) and extent of tissue dissection and may be associated with more complications and poorer cosmetic outcome. This is a report of excision of MF in multiple quadrants of the breast using a modification of subcutaneous dissection technique dubbed the circumareolar incision and subdermal tunneling (CAST) dissection. After exposure of the superficial fascia with circumareolar incision, subdermal cone-wise dissection was made to allow mobilization of the segment bearing the lump(s)...
January 2017: Nigerian Journal of Surgery: Official Publication of the Nigerian Surgical Research Society
https://www.readbyqxmd.com/read/28575375/association-of-c-reactive-protein-with-bacterial-and-respiratory-syncytial-virus-associated-pneumonia-among-children-aged-5-years-in-the-perch-study
#9
Melissa M Higdon, Tham Le, Katherine L O'Brien, David R Murdoch, Christine Prosperi, Henry C Baggett, W Abdullah Brooks, Daniel R Feikin, Laura L Hammitt, Stephen R C Howie, Karen L Kotloff, Orin S Levine, J Anthony G Scott, Donald M Thea, Juliet O Awori, Vicky L Baillie, Stephanie Cascio, Somchai Chuananon, Andrea N DeLuca, Amanda J Driscoll, Bernard E Ebruke, Hubert P Endtz, Anek Kaewpan, Geoff Kahn, Angela Karani, Ruth A Karron, David P Moore, Daniel E Park, Mohammed Ziaur Rahman, Rasheed Salaudeen, Phil Seidenberg, Somwe Wa Somwe, Mamadou Sylla, Milagritos D Tapia, Scott L Zeger, Maria Deloria Knoll, Shabir A Madhi
Background.: Lack of a gold standard for identifying bacterial and viral etiologies of pneumonia has limited evaluation of C-reactive protein (CRP) for identifying bacterial pneumonia. We evaluated the sensitivity and specificity of CRP for identifying bacterial vs respiratory syncytial virus (RSV) pneumonia in the Pneumonia Etiology Research for Child Health (PERCH) multicenter case-control study. Methods.: We measured serum CRP levels in cases with World Health Organization-defined severe or very severe pneumonia and a subset of community controls...
June 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28575358/standardization-of-laboratory-methods-for-the-perch-study
#10
Amanda J Driscoll, Ruth A Karron, Susan C Morpeth, Niranjan Bhat, Orin S Levine, Henry C Baggett, W Abdullah Brooks, Daniel R Feikin, Laura L Hammitt, Stephen R C Howie, Maria Deloria Knoll, Karen L Kotloff, Shabir A Madhi, J Anthony G Scott, Donald M Thea, Peter V Adrian, Dilruba Ahmed, Muntasir Alam, Trevor P Anderson, Martin Antonio, Vicky L Baillie, Michel Dione, Hubert P Endtz, Caroline Gitahi, Angela Karani, Geoffrey Kwenda, Abdoul Aziz Maiga, Jessica McClellan, Joanne L Mitchell, Palesa Morailane, Daisy Mugo, John Mwaba, James Mwansa, Salim Mwarumba, Sammy Nyongesa, Sandra Panchalingam, Mustafizur Rahman, Pongpun Sawatwong, Boubou Tamboura, Aliou Toure, Toni Whistler, Katherine L O'Brien, David R Murdoch
The Pneumonia Etiology Research for Child Health study was conducted across 7 diverse research sites and relied on standardized clinical and laboratory methods for the accurate and meaningful interpretation of pneumonia etiology data. Blood, respiratory specimens, and urine were collected from children aged 1-59 months hospitalized with severe or very severe pneumonia and community controls of the same age without severe pneumonia and were tested with an extensive array of laboratory diagnostic tests. A standardized testing algorithm and standard operating procedures were applied across all study sites...
June 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28573468/time-dependent-pharmacokinetics-of-pembrolizumab-in-patients-with-solid-tumor-and-its-correlation-with-best-overall-response
#11
Hongshan Li, Jingyu Yu, Chao Liu, Jiang Liu, Sriram Subramaniam, Hong Zhao, Gideon M Blumenthal, David C Turner, Claire Li, Malidi Ahamadi, Rik de Greef, Manash Chatterjee, Anna G Kondic, Julie A Stone, Brian P Booth, Patricia Keegan, Atiqur Rahman, Yaning Wang
Pembrolizumab is a monoclonal antibody that targets the programmed death-1 receptor to induce immune-mediated clearance (CL) of tumor cells. Originally approved by the US Food and Drug Administration in 2014 for treating patients with unresectable or metastatic melanoma, pembrolizumab is now also used to treat patients with non-small-cell lung cancer, classical Hodgkin lymphoma, head and neck cancer, and urothelial cancer. This paper describes the recently identified feature of pembrolizumab pharmacokinetics, the time-dependent or time-varying CL...
June 1, 2017: Journal of Pharmacokinetics and Pharmacodynamics
https://www.readbyqxmd.com/read/28572707/thermostable-phycocyanin-from-the-red-microalga-cyanidioschyzon-merolae-a-new-natural-blue-food-colorant
#12
D Y Rahman, F D Sarian, A van Wijk, M Martinez-Garcia, M J E C van der Maarel
The demand for natural food colorants is growing as consumers question the use of artificial colorants more and more. The phycobiliprotein C-phycocyanin of Arthospira platensis is used as a natural blue colorant in certain food products. The thermoacidophilic red microalga Cyanidioschyzon merolae might provide an alternative source of phycocyanin. Cyanidioschyzon merolae belongs to the order Cyanidiophyceae of the phylum Rhodophyta. Its natural habitat are sulfuric hot springs and geysers found near volcanic areas in, e...
2017: Journal of Applied Phycology
https://www.readbyqxmd.com/read/28545973/evolutionary-and-ecological-forces-influencing-population-diversification-in-bornean-montane-passerines
#13
Vivien L Chua, Brian Tilston Smith, Ryan C Burner, Mustafa Abdul Rahman, Maklarin Lakim, Dewi M Prawiradilaga, Robert G Moyle, Frederick H Sheldon
The mountains of Borneo are well known for their high endemicity and historical role in preserving Southeast Asian rainforest biodiversity, but the diversification of populations inhabiting these mountains is poorly studied. Here we examine the genetic structure of 12 Bornean montane passerines by comparing complete mtDNA ND2 gene sequences of populations spanning the island. Maximum likelihood and Bayesian phylogenetic trees and haplotype networks are examined for common patterns that might signal important historical events or boundaries to dispersal...
May 22, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28542477/mycobacterium-tuberculosis-arrests-host-cycle-at-the-g1-s-transition-to-establish-long-term-infection
#14
Bridgette M Cumming, Md Aejazur Rahman, Dirk A Lamprecht, Kyle H Rohde, Vikram Saini, John H Adamson, David G Russell, Adrie J C Steyn
Signals modulating the production of Mycobacterium tuberculosis (Mtb) virulence factors essential for establishing long-term persistent infection are unknown. The WhiB3 redox regulator is known to regulate the production of Mtb virulence factors, however the mechanisms of this modulation are unknown. To advance our understanding of the mechanisms involved in WhiB3 regulation, we performed Mtb in vitro, intraphagosomal and infected host expression analyses. Our Mtb expression analyses in conjunction with extracellular flux analyses demonstrated that WhiB3 maintains bioenergetic homeostasis in response to available carbon sources found in vivo to establish Mtb infection...
May 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28537254/large-scale-meta-analysis-characterizes-genetic-architecture-for-common-psoriasis-associated-variants
#15
Lam C Tsoi, Philip E Stuart, Chao Tian, Johann E Gudjonsson, Sayantan Das, Matthew Zawistowski, Eva Ellinghaus, Jonathan N Barker, Vinod Chandran, Nick Dand, Kristina Callis Duffin, Charlotta Enerbäck, Tõnu Esko, Andre Franke, Dafna D Gladman, Per Hoffmann, Külli Kingo, Sulev Kõks, Gerald G Krueger, Henry W Lim, Andres Metspalu, Ulrich Mrowietz, Sören Mucha, Proton Rahman, Andre Reis, Trilokraj Tejasvi, Richard Trembath, John J Voorhees, Stephan Weidinger, Michael Weichenthal, Xiaoquan Wen, Nicholas Eriksson, Hyun M Kang, David A Hinds, Rajan P Nair, Gonçalo R Abecasis, James T Elder
Psoriasis is a complex disease of skin with a prevalence of about 2%. We conducted the largest meta-analysis of genome-wide association studies (GWAS) for psoriasis to date, including data from eight different Caucasian cohorts, with a combined effective sample size >39,000 individuals. We identified 16 additional psoriasis susceptibility loci achieving genome-wide significance, increasing the number of identified loci to 63 for European-origin individuals. Functional analysis highlighted the roles of interferon signalling and the NFκB cascade, and we showed that the psoriasis signals are enriched in regulatory elements from different T cells (CD8(+) T-cells and CD4(+) T-cells including TH0, TH1 and TH17)...
May 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28536776/development-of-improved-dosing-regimens-for-mycophenolate-mofetil-based-on-population-pharmacokinetic-analyses-in-adults-with-lupus-nephritis
#16
Azrin N Abd Rahman, Susan E Tett, Halim A Abdul Gafor, Brett C McWhinney, Christine E Staatz
BACKGROUND AND OBJECTIVE: Mycophenolic acid (MPA) provides effective treatment for lupus nephritis patients. Owing to its large pharmacokinetic variability, it is questionable whether standard fixed dose therapy can achieve optimal MPA exposure. The aim of this study was to develop a population pharmacokinetic model of MPA and its metabolite, 7-O-MPA-β-glucuronide (MPAG), to identify important covariate influences and better predict patient dosing requirements. METHODS: MPA and MPAG concentration-time profiles were collected from 25 patients receiving mycophenolate mofetil (MMF) with or without cyclosporine (CsA) co-therapy...
May 23, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28533979/a-genome-wide-assessment-of-stages-of-elevational-parapatry-in-bornean-passerine-birds-reveals-no-introgression-implications-for-processes-and-patterns-of-speciation
#17
Robert G Moyle, Joseph D Manthey, Peter A Hosner, Mustafa Rahman, Maklarin Lakim, Frederick H Sheldon
Topographically complex regions often contain the close juxtaposition of closely related species along elevational gradients. The evolutionary causes of these elevational replacements, and thus the origin and maintenance of a large portion of species diversity along elevational gradients, are usually unclear because ecological differentiation along a gradient or secondary contact following allopatric diversification can produce the same pattern. We used reduced representation genomic sequencing to assess genetic relationships and gene flow between three parapatric pairs of closely related songbird taxa (Arachnothera spiderhunters, Chloropsis leafbirds, and Enicurus forktails) along an elevational gradient in Borneo...
2017: PeerJ
https://www.readbyqxmd.com/read/28532085/mesoporous-nano-bioglass-designed-for-the-release-of-imatinib-and-in-vitro-inhibitory-effects-on-cancer-cells
#18
Muhammad Shoaib, Aamer Saeed, Muhammad Saif Ur Rahman, Muhammad Moazzam Naseer
For treating bone cancer, controlled drug delivery is an important strategy. Bioactive scaffolds are widely used biomaterials due to their usefulness in localized drug delivery. The aim of this study was to develop mesoporous bioglass (MBG) with improved bioactivity and controllable drug delivery rate. By using pluronic 123 (P123) as a template, a facile sol-gel route was employed for the synthesis of MBG nanoparticles (NPs). The composition of the prepared sample was estimated by using energy dispersive X-ray spectroscopy (EDX)...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28527863/over-production-of-fermentable-sugar-for-bioethanol-production-from-carbohydrate-rich-malaysian-food-waste-via-sequential-acid-enzymatic-hydrolysis-pretreatment
#19
Halimatun Saadiah Hafid, Abdul Rahman Nor 'Aini, Mohd Noriznan Mokhtar, Ahmad Tarmezee Talib, Azhari Samsu Baharuddin, Md Shah Umi Kalsom
In Malaysia, the amount of food waste produced is estimated at approximately 70% of total municipal solid waste generated and characterised by high amount of carbohydrate polymers such as starch, cellulose, and sugars. Considering the beneficial organic fraction contained, its utilization as an alternative substrate specifically for bioethanol production has receiving more attention. However, the sustainable production of bioethanol from food waste is linked to the efficient pretreatment needed for higher production of fermentable sugar prior to fermentation...
May 17, 2017: Waste Management
https://www.readbyqxmd.com/read/28525654/molecular-detection-by-analysis-of-the-16s-rrna-gene-of-fecal-coliform-bacteria-from-the-two-korean-apodemus-species-apodemus-agrarius-and-a-peninsulae
#20
M M Rahman, K B Yoon, S J Lim, M G Jeon, H J Kim, H Y Kim, J Y Cho, H M Chae, Y C Park
Wild mouse feces can disseminate zoonotic microorganisms throughout a farm, which is a great threat to human health and can lead to economic loss through contaminated agricultural produce. To assess the microbial communities, especially fecal coliform bacteria, we used two methods. First, we isolated bacterial colonies onto the common media LB (lactose broth) agar, TSA (tryptic soy agar), and MRS (de Man, Rogosa, and Sharpe) agar, and then randomly select colonies from each plate and stocked them to the mother plate for genomic DNA isolation...
May 18, 2017: Genetics and Molecular Research: GMR
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