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https://www.readbyqxmd.com/read/29775804/in-silico-study-of-the-active-site-of-helicobacter-pylori-urease-and-its-inhibition-by-hydroxamic-acids
#1
Richa Arora, Upasana Issar, Rita Kakkar
Hydroxamic acids have emerged as the most promising candidates from among the different classes of inhibitors of urease. In order to understand the mechanism of their action, we have studied in detail using quantum mechanics the active site of Helicobacter pylori urease complexed with acetohydroxamic acid. A diverse library of ligands having the hydroxamate moiety has been prepared and docked into the active site of urease using the QM/MM methodology. It is found that hydroxamic acids with hydrophobic groups attached to them are more potent inhibitors of urease because they can easily penetrate the hydrophobic environment surrounding the active site...
May 1, 2018: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/29775675/associations-between-angiotensinogen-m235t-polymorphisms-and-the-risk-of-diabetic-nephropathy-a-meta-analysis
#2
Bo Zhou, Min Wen, Ling Mi, Cu-Jiao Hu, Yi Zhang, Jian-Tar Wang, Lei Tang
AIMS: The aim of the present study was to clarify the potential relationship of angiotensinogen (AGT) M235T polymorphism and diabetic nephropathy (DN) risk. METHODS: Comprehensive electronic search in Pubmed, Web of Science, EBSCO, Embase, the Cochrane Library and China National Knowledge Infrastructure (CNKI) to find original articles about the association between AGT M235T polymorphism and DN risk published before 27 September 2017. Literature quality assessment was performed with the Newcastle-Ottawa Scale...
May 15, 2018: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29775639/surgical-management-of-lower-urinary-tract-symptoms-attributed-to-benign-prostatic-hyperplasia-aua-guideline
#3
Harris E Foster, Michael J Barry, Philipp Dahm, Manhar C Gandhi, Steven A Kaplan, Tobias S Kohler, Lori B Lerner, Deborah J Lightner, J Kellogg Parsons, Claus G Roehrborn, Charles Welliver, Timothy J Wilt, Kevin T McVary
Purpose; Male lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH) is common in men and can have negative effects on quality of life (QOL). It is the hope that this Guideline becomes a reference on the effective evidence-based surgical management of LUTS/BPH. MATERIALS/METHODS: The evidence team searched Ovid MEDLINE, the Cochrane Library, and the Agency for Healthcare Research and Quality (AHRQ) database to identify studies indexed between January 2007 and September 2017...
May 15, 2018: Journal of Urology
https://www.readbyqxmd.com/read/29775561/isolation-and-characterization-of-a-novel-anti-salbutamol-chicken-scfv-for-human-doping-urinalysis
#4
Warren Lee, Syed A Ali, Leow Chiuan Yee, Tan Soo Choon, Leow Chiuan Herng
Anti-salbutamol antibodies remain as important tools for the detection of salbutamol abuse in athletic doping. This study evaluated the feasibility and efficiency of the chicken (Gallus gallus domesticus) as an immunization host to generate anti-salbutamol scFv antibodies by phage display. A phage display antibody library was constructed from a single chicken immunized against salbutamol-KLH conjugate. After a stringent biopanning strategy, a novel scFv clone which was inhibited by free salbutamol recorded the highest affinity...
May 15, 2018: Analytical Biochemistry
https://www.readbyqxmd.com/read/29775389/systematic-review-of-the-impact-of-cancer-survivorship-care-plans-on-health-outcomes-and-health-care-delivery
#5
Paul B Jacobsen, Antonio P DeRosa, Tara O Henderson, Deborah K Mayer, Chaya S Moskowitz, Electra D Paskett, Julia H Rowland
Purpose Numerous organizations recommend that patients with cancer receive a survivorship care plan (SCP) comprising a treatment summary and follow-up care plans. Among current barriers to implementation are providers' concerns about the strength of evidence that SCPs improve outcomes. This systematic review evaluates whether delivery of SCPs has a positive impact on health outcomes and health care delivery for cancer survivors. Methods Randomized and nonrandomized studies evaluating patient-reported outcomes, health care use, and disease outcomes after delivery of SCPs were identified by searching MEDLINE, Embase, PsycINFO, Cumulative Index to Nursing and Allied Health Literature, and Cochrane Library...
May 18, 2018: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29774941/-meta-analysis-of-gastric-stump-cancer-after-gastrectomy-for-gastric-cancer
#6
Yongbai Li, Zhidong Gao, Xuesong Zhao, Bo Wang, Yingjiang Ye, Shan Wang, Kewei Jiang
OBJECTIVE: To study the clinicopathological features and prognosis of gastric stump cancer (GSC) following subtotal gastrectomy for gastric cancer, to compare the clinicopathologic differences between narrow GSC and generalized GSC, and to compare the prognosis between GSC and primary proximal gastric cancer (PPGC) after radical resection. METHODS: Literatures of GSC-associated clinical study were searched by computer from the Cochrane Library, Medline, PubMed, CNKI, Wanfang and VIP databases, and the retrieval period was from the establishment of database to December 31, 2017...
May 25, 2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29774657/cheminformatics-in-drug-discovery-an-industrial-perspective
#7
REVIEW
Hongming Chen, Thierry Kogej, Ola Engkvist
Cheminformatics has established itself as a core discipline within large scale drug discovery operations. It would be impossible to handle the amount of data generated today in a small molecule drug discovery project without persons skilled in cheminformatics. In addition, due to increased emphasis on "Big Data", machine learning and artificial intelligence, not only in the society in general, but also in drug discovery, it is expected that the cheminformatics field will be even more important in the future...
May 18, 2018: Molecular Informatics
https://www.readbyqxmd.com/read/29774590/heritage-of-stanislaw-ciechanowski-1869-1945-discoverer-of-pathogenesis-of-prostatic-hyperplasia-passionis-insignia-signis-fulgent-mirificis
#8
Andrzej Wincewicz, Piotr Woltanowski, Stanisław Sulkowski
BACKGROUND: Prostatic enlargement was first correctly recognized as a prostatic hyperplasia by professor of anatomic pathology, Stanisław Ciechanowski (1869-1945) in Cracow on contrary to Parisian urologist Jean Casimir Félix Guyon's concepts of progressing atherosclerosis as a morphological cause of prostatic overgrowth and mechanical insufficiency of lower urinary tract. METHODS: Primary resources were analyzed about Stanisław Ciechanowski mainly from depositories of the Section of Special Collection, Stanisław Konopka Main Medical Library Warsaw and Polish bibliograhy of Estreichers at Jagiellonian University...
May 18, 2018: Prostate
https://www.readbyqxmd.com/read/29773680/macrophage-migration-inhibitory-factor-794-catt-microsatellite-polymorphism-and-risk-of-tuberculosis-a-meta-analysis
#9
Mingbiao Ma, Lvyan Tao, Aihua Liu, Zhang Liang, Jiaru Yang, Yun Peng, Xiting Dai, Ruolan Bai, Zhenhua Ji, Miaomiao Jian, Fukai Bao
Tuberculosis (TB) is a chronic infectious disease that has been threatening public health for many years. Several studies have shown the relationship between the macrophage migration inhibitory factor-794CATT ( MIF-794CATT ) microsatellite polymorphism and susceptibility of tuberculosis ( TB ). However, the results remain inconclusive. Therefore, we aim to find out the impact of MIF-794 CATT microsatellite polymorphism on risk of TB by a comprehensive meta-analysis. We conducted a systematic study search in PubMed,Embase, the Cochrane Library, and the China National Knowledge Infrastructure ( CNKI ) up to October, 2017...
May 17, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29773647/altered-sterol-metabolism-in-budding-yeast-affects-mitochondrial-iron-sulfur-fe-s-cluster-synthesis
#10
Diane M Ward, Opal S Chen, Liangtao Li, Jerry Kaplan, Shah Alam Bhuiyan, Selvamuthu K Natarajan, Martin Bard, James E Cox
Ergosterol synthesis is essential for cellular growth and viability of the budding yeast Saccharomyces cerevisiae, and intracellular sterol distribution and homeostasis are therefore highly regulated in this species. Erg25 is an iron-containing C4-methyl sterol oxidase that contributes to the conversion of 4,4-dimethylzymosterol to zymosterol, a precursor of ergosterol. The ERG29 gene encodes an endoplasmic reticulum (ER)-associated protein, and here we identified a role for Erg29 in the methyl sterol oxidase step of ergosterol synthesis...
May 17, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29773451/total-hip-arthroplasty-for-posttraumatic-osteoarthritis-following-acetabular-fracture-a-systematic-review-of-characteristics-outcomes-and-complications
#11
Robert D Stibolt, Harshadkumar A Patel, Samuel R Huntley, Eva J Lehtonen, Ashish B Shah, Sameer M Naranje
PURPOSE: Posttraumatic arthritis (PTA) may develop years after acetabular fracture, hindering joint function and causing significant chronic musculoskeletal pain. Given the delayed onset of PTA, few studies have assessed outcomes of delayed total hip arthroplasty (THA) in acetabular fracture patients. This study systematically reviewed the literature for outcomes of THA in patients with PTA and prior acetabular fracture. METHODS: Pubmed, EMBASE, SCOPUS, and Cochrane library were searched for articles containing the keywords "acetabular", "fracture", "arthroplasty", and "post traumatic arthritis" published between 1995 and August 2017...
April 26, 2018: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/29773211/treating-obstructive-sleep-apnea-with-continuous-positive-airway-pressure-reduces-risk-of-recurrent-atrial-fibrillation-after-catheter-ablation-a-meta-analysis
#12
REVIEW
Feilong Deng, Ali Raza, Jun Guo
INTRODUCTION: Recent studies have suggested that there is a strong relationship between obstructive sleep apnea (OSA) and atrial fibrillation (AF). However, they have not identified whether treating OSA with continuous positive airway pressure (CPAP) might reduce rates of recurrent AF. OBJECTIVE: To investigate the recurrent risk of AF after catheter ablation among patients with OSA who did receive or did nor receive CPAP therapy. METHODS: A systematic review of PubMed, Embase, Medline, Cochrane library, China National Knowledge Infrastructure (CNKI) and Wan-fang databases was conducted to obtain relevant cohort studies and randomized controlled trials (RCTs)...
June 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29773150/anxiety-depression-and-health-related-quality-of-life-in-heterozygous-familial-hypercholesterolemia-a-systematic-review-and-meta-analysis
#13
Leo E Akioyamen, Jacques Genest, Shubham D Shan, Happy Inibhunu, Anna Chu, Jack V Tu
BACKGROUND: Heterozygous familial hypercholesterolemia (FH) is a common genetic disease predisposing affected individuals to a high risk of cardiovascular disease. Yet, considerable uncertainty exists regarding its impact on psychosocial wellbeing. OBJECTIVES: We performed a systematic review and meta-analysis of the association between FH and symptoms of anxiety and depression, and health-related quality of life (HRQL). METHODS: We searched MEDLINE, EMBASE, Global Health, the Cochrane Library, PsycINFO, and PubMed for peer-reviewed literature published in English between January 1, 1990 and January 1, 2018...
June 2018: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/29773063/conversion-of-protein-active-regions-into-peptidomimetic-therapeutic-leads-using-backbone-cyclization-and-cycloscan-how-to-do-it-yourself
#14
Samuel J S Rubin, Yftah Tal-Gan, Chaim Gilon, Nir Qvit
Protein-protein interactions (PPIs) are particularly important for controlling both physiologic and pathologic biological processes but are difficult to target due to their large and/or shallow interaction surfaces unsuitable for small molecules. Linear peptides found in nature interact with some PPIs, and protein active regions can be used to design synthetic peptide compounds for inhibition of PPIs. However, linear peptides are limited therapeutically by poor metabolic and conformational stability, which can compromise their bioactivity and half-life...
May 17, 2018: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/29772862/-effect-of-surgical-intervention-time-on-the-recovery-of-nerve-function-in-acute-spinal-cord-injury-a-meta-analysis
#15
Wen-Tao Zhao, Guang-Dong Chen, Dong-Chang Xia, Pan-Pan Li
OBJECTIVE: To evaluate the efficacy and safety of different operation time for acute spinal cord injury(SCI) based on systematic review. METHODS: PubMed database, EMBASE database, Cochrane Library, ISI Web of knowledge, CBM database, VIP database, CNKI database and Wanfang database were searched from their start year up to February 2017 for relevant randomized clinical trials on the treatment of acute spinal cord injury with different intervention times. RESULTS: Four randomized clinical trials of total 156 cases were included...
April 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29772720/molecular-diversity-by-olefin-cross-metathesis-on-solid-support-generation-of-libraries-of-biologically-promising-%C3%AE-lactam-derivatives
#16
Luciana Méndez, Andrés A Poeylaut-Palena, Ernesto G Mata
The application of the reagent-based diversification strategy for generation of libraries of biologically promising β-lactam derivatives is described. Key features are the versatility of the linker used and the cross-metathesis functionalization at the cleavage step. From an immobilized primary library, diversity was expanded by applying different cleavage conditions, leading to a series of cholesterol absorption inhibitor analogues together with interesting hybrid compounds through incorporation of a chalcone moiety...
May 16, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29772600/an-accurate-bacterial-dna-quantification-assay-for-hts-library-preparation-of-human-biological-samples
#17
Sarah Seashols-Williams, Raquel Green, Denise Wohlfahrt, Angela Brand, Antonio Limjuco Tan-Torres, Francy Nogales, J Paul Brooks, Baneshwar Singh
Sequencing and classification of microbial taxa within forensically relevant biological fluids has the potential for applications in the forensic science and biomedical fields. The quantity of bacterial DNA from human samples is currently estimated based on quantity of total DNA isolated. This method can miscalculate bacterial DNA quantity due to the mixed nature of the sample, and consequently library preparation is often unreliable. We developed an assay that can accurately and specifically quantify bacterial DNA within a mixed sample for reliable 16S ribosomal DNA (16S rDNA) library preparation and high throughput sequencing (HTS)...
May 17, 2018: Electrophoresis
https://www.readbyqxmd.com/read/29772584/survival-after-aortic-valve-replacement-with-bovine-or-porcine-valve-prostheses-a-systematic-review-and-meta-analysis
#18
Natalie Glaser, Veronica Jackson, Anders Franco-Cereceda, Ulrik Sartipy
BACKGROUND:  Bovine and porcine bioprostheses are commonly used for surgical aortic valve replacement. It is unknown if the long-term survival differs between the two valve types.We performed a systematic review and meta-analysis to compare survival in patients who underwent aortic valve replacement and received a bovine or a porcine prosthesis. METHODS:  We performed a systematic search of Medline, Embase, Web of Science, and the Cochrane Library. Cohort studies that compared survival between patients who underwent aortic valve replacement and received either a bovine or a porcine bioprosthesis and that reported overall long-term survival with hazard ratio (HR) and 95% confidence interval (CI) were included...
May 17, 2018: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/29772305/jatrophane-diterpenoids-from-euphorbia-helioscopia-and-their-lipid-lowering-activities
#19
Jun Li, Hui-Hui Li, Wen-Qiong Wang, Wei-Bin Song, Yi-Ping Wang, Li-Jiang Xuan
The phytochemical study of Euphorbia helioscopia led to the isolation of 33 jatrophane diterpenoids (1-33), of which six (1-6) were new. This small jatrophane library was established to screen for potential lipid modulators. LDL-Uptake screening assay demonstrated that most of them improved LDL-Uptake rate in HepG2 cells, with compounds 16, 21 and 26 exhibiting more outstanding effects. Further exploration found that these three compounds could increase LDLR protein level in HepG2 cells dose-dependently. SAR studies suggested that substituted patterns of C-9, steric hindrance between C-14 and C-15, and the long conjugated fragment from C-5 to the carbonyl (C-9) were essential for the activity...
May 14, 2018: Fitoterapia
https://www.readbyqxmd.com/read/29772275/5c-id-increased-resolution-chromosome-conformation-capture-carbon-copy-with-in-situ-3c-and-double-alternating-primer-design
#20
Ji Hun Kim, Katelyn R Titus, Wanfeng Gong, Jonathan A Beagan, Zhendong Cao, Jennifer E Phillips-Cremins
Mammalian genomes are folded in a hierarchy of compartments, topologically associating domains (TADs), subTADs, and looping interactions. Currently, there is a great need to evaluate the link between chromatin topology and genome function across many biological conditions and genetic perturbations. Hi-C can generate genome-wide maps of looping interactions but is intractable for high-throughput comparison of loops across multiple conditions due to the enormous number of reads (>6 Billion) required per library...
May 14, 2018: Methods: a Companion to Methods in Enzymology
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