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https://www.readbyqxmd.com/read/27903763/enzyme-activation-through-the-utilization-of-intrinsic-dianion-binding-energy
#1
REVIEW
T L Amyes, M M Malabanan, X Zhai, A C Reyes, J P Richard
We consider 'the proposition that the intrinsic binding energy that results from the noncovalent interaction of a specific substrate with the active site of the enzyme is considerably larger than is generally believed. An important part of this binding energy may be utilized to provide the driving force for catalysis, so that the observed binding energy represents only what is left over after this utilization' [Jencks,W.P. (1975) Adv. Enzymol. Relat. Areas. Mol. Biol., 43: , 219-410]. The large ~12 kcal/mol intrinsic substrate phosphodianion binding energy for reactions catalyzed by triosephosphate isomerase (TIM), orotidine 5'-monophosphate decarboxylase and glycerol-3-phosphate dehydrogenase is divided into 4-6 kcal/mol binding energy that is expressed on the formation of the Michaelis complex in anchoring substrates to the respective enzyme, and 6-8 kcal/mol binding energy that is specifically expressed at the transition state in activating the respective enzymes for catalysis...
November 29, 2016: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/27896895/five-year-efficacy-and-safety-of-tenofovir-based-salvage-therapy-for-patients-with-chronic-hepatitis-b-who-previously-failed-lam-adv-therapy
#2
Lucy Lim, Alexander Thompson, Scott Patterson, Jacob George, Simone Strasser, Alice Lee, William Sievert, Amanda Nicoll, Paul Desmond, Stuart Roberts, Kaye Marion, Scott Bowden, Stephen Locarnini, Peter Angus
BACKGROUND: Multidrug resistant HBV continues to be an important clinical problem. The TDF-109 study demonstrated that TDF±LAM is effective salvage therapy through 96 weeks for LAM resistant patients who previously failed ADV add-on or switch therapy. We evaluated the 5 year efficacy and safety outcomes in patients receiving long-term TDF±LAM in the TDF-109 study. METHODS: 59 patients completed the first phase of the TDF-109 study and 54/59 were rolled over into a long-term prospective open-label study of TDF±LAM 300mg daily...
November 29, 2016: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/27895788/effects-of-microrna-21-on-the-biological-functions-of-t-cell-acute-lymphoblastic-lymphoma-leukemia
#3
Cunzhen Shi, Xudong Zhang, Xin Li, Lei Zhang, Ling Li, Zhenchang Sun, Xiaorui Fu, Jingjing Wu, Yu Chang, Wencai Li, Qingjiang Chen, Mingzhi Zhang
Previous studies have demonstrated that microRNA-21 (miR-21) is an oncogene and is significantly upregulated in tumor tissue. However, its association with T-cell acute lymphoblastic lymphoma/leukemia (T-ALL) remains poorly understood. The aim of the present study was to investigate the effects of miR-21 on T-ALL cells by constructing Jurkat cells infected with recombinant adenovirus adv-miR-21 or adv-anti-miR-21. In addition, the target gene of miR-21 was identified by reverse transcription-quantitative polymerase chain reaction and western blotting...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27894993/new-adenoviruses-from-new-primate-hosts-growing-diversity-reveals-taxonomic-weak-points
#4
Eva Dadáková, Tomáš Chrudimský, Kristýna Brožová, David Modrý, Vladimír Celer, Kristýna Hrazdilová
The knowledge of the closest human relatives of human adenoviruses (AdVs) such as adenoviruses found in nonhuman primates is still limited, despite the growing importance of adenoviruses in vaccine development, gene and cancer therapy. We examined 153 stool samples of 17 non-human primate species and detected adenoviral DNA sequences of DNA polymerase (DPOL) gene in 54 samples (35%), originating from 12 out of 17 primate species. We further sequenced 15 hexon gene fragments and based on the phylogenetic analysis we propose two new provisional species SAdV-H and SAdV-I...
November 25, 2016: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/27894861/development-of-a-competitive-double-antibody-lateral-flow-assay-for-the-detection-of-antibodies-specific-to-glycoprotein-b-of-aujeszky-s-disease-virus-in-swine-sera
#5
V V Vrublevskaya, V N Afanasyev, A A Grinevich, Yu Y Skarga, P P Gladyshev, S A Ibragimova, D V Krylsky, O S Morenkov
Three lateral flow assays (LFAs) for the detection of antibodies against glycoprotein B (gB) of Aujeszky's disease virus (ADV) in swine sera: a competitive double antibody sandwich LFA without a preincubation step (CDAS-gB-LFA), a CDAS-gB-LFA with a preincubation step (pCDAS-gB-LFA), and a competitive direct gB-LFA have been developed and were compared with each other and with a gB-ELISA. The assays are based on monoclonal antibodies to immunodominant epitopes of ADV gB. The pCDAS-gB-LFA proved to be the most specific and sensitive assay to detect antibodies directed to ADV gB...
November 25, 2016: Journal of Virological Methods
https://www.readbyqxmd.com/read/27886426/retraction-statement-high-volumetric-performance-aligned-nano-porous-microwave-exfoliated-graphite-oxide-based-electrochemical-capacitors-and-aligned-nano-porous-microwave-exfoliated-graphite-oxide-ionic-actuators-with-high-strain-and-elastic-energy-density
#6
(no author information available yet)
These articles first published on 15 August 2013 and 21 August 2013 on the Wiley Online Library have been retracted at the request of the Research Integrity Officer (RIO) of The Pennsylvania State University, in agreement with the corresponding authors, the journal's Editor-in-Chief, and Wiley-VCH Verlag GmbH & Co. KGaA, because portions of the reported results cannot be considered reliable or reproducible. Following an investigation by the RIO of The Pennsylvania State University, it was found that the data in Figure 2a,b and Figure S1a,b (Supporting Information) of the article with DOI: 10...
November 2016: Advanced Materials
https://www.readbyqxmd.com/read/27883373/clinical-impact-of-mixed-respiratory-viral-infection-in-children-with-adenoviral-infection
#7
Hyun Jun Lee, Young Eun Seo, Seung Beom Han, Dae Chul Jeong, Jin Han Kang
BACKGROUND: Although adenovirus (ADV) infection occurs steadily all year round in Korea and the identification of respiratory viral coinfections has been increasing following the introduction of multiplex real-time polymerase chain reaction tests, the clinical impact of viral coinfection in children with ADV infection has rarely been reported. MATERIALS AND METHODS: Medical records of children diagnosed with ADV infection were retrospectively reviewed. The enrolled children were divided into two groups based on the identified respiratory viruses: ADV group and coinfection group...
November 21, 2016: Infection & Chemotherapy
https://www.readbyqxmd.com/read/27880997/efficacy-of-switching-from-adefovir-to-tenofovir-in-chronic-hepatitis-b-patients-who-exhibit-suboptimal-responses-to-adefovir-based-combination-rescue-therapy-due-to-resistance-to-nucleoside-analogues-satis-study
#8
Hye Won Lee, Jun Yong Park, Beom Kyung Kim, Moon Young Kim, Jung Il Lee, Young Suk Kim, Ki Tae Yoon, Kwang-Hyub Han, Sang Hoon Ahn
Background/Aims: It remains to be determined whether switching from adefovir (ADV) to tenofovir (TDF) provides better virological outcomes in patients exhibiting suboptimal responses to ADV plus nucleoside analogue (ADV+NA) therapy for NA-resistant chronic hepatitis B (CHB). Methods: In this prospective trial, patients who showed partial responses (defined as serum hepatitis B virus [HBV] DNA >60 IU/mL) to ADV+NA therapy for NA resistance were randomly allocated to receive TDF plus NA (TDF+NA group, n=16) or to continue their current therapy (ADV+NA group, n=16)...
November 25, 2016: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/27877054/adefovir-dipivoxil-is-less-expensive-than-lamivudine-and-associated-with-similar-prognosis-in-patients-with-hepatitis-b-virus-related-hepatocellular-carcinoma-after-radical-resection
#9
Jian-Hong Zhong, Yang Ke, Shao-Liang Zhu, Lin Wang, Cheng-Piao Luo, Wen-Feng Gong, Xue-Mei You, Liang Ma, Bang-De Xiang, Le-Qun Li
AIM: Lamivudine (LAM) and adefovir dipivoxil (ADV) are widely used in patients with hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC), but few studies have directly compared their therapeutic efficacy and treatment cost. This study aims to compare LAM with ADV head-to-head in these patients. METHODS: We retrospectively analyzed 201 patients with HBV-related HCC who underwent radical resection and subsequently received LAM (n=155) or ADV (n=46). The two groups were compared in terms of HBV-DNA levels, liver function, antiviral resistance, recurrence-free, and overall survival, as well as antiviral medication costs...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27876193/effect-of-adenovirus-mediated-tgf-%C3%AE-1-gene-transfer-on-the-function-of-rabbit-articular-chondrocytes
#10
Yuan Tang, Jun Xiao, Yeyang Wang, Ming Li, Zhanjun Shi
BACKGROUND: Articular chondrocytes are important in maintaining normal cartilage tissue and preventing articular degeneration. Exogenous genes have previously been transduced into articular cells using adenoviral vectors to contribute to the maintenance of cell function. This study aimed to transfer the transforming growth factor-β1 gene (TGF-β1) into rabbit articular chondrocytes by adenovirus infection to elucidate its effects on cell function. METHODS: Rabbit chondrocytes were isolated and cultured both as monolayers and three-dimensional culture systems...
November 18, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27862721/efficacy-and-safety-of-tenofovir-disoproxil-fumarate-rescue-therapy-for-chronic-hepatitis-b-patients-who-failed-other-nucleos-t-ide-analogues
#11
Hiromitsu Kumada, Kazuhiko Koike, Kazuaki Suyama, Hiroshi Ito, Hiroshi Itoh, Wataru Sugiura
OBJECTIVE: Acquisition of nucleos(t)ide analogue (NA) inhibitors resistance is critical in successful chronic hepatitis B treatment. As the pattern of tenofovir disoproxil fumarate (TDF) resistance mutations differs from that of other antiviral drugs, we sought to clarify the salvaging potential of TDF in HBV patients who are poor responders or resistant to other NAs. MATERIALS AND METHOD: A prospective, multi-center, one-arm, open-label study was conducted from December 2011 to October 2014...
November 15, 2016: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/27858892/circulating-kidney-injury-molecule-1-is-a-novel-diagnostic-biomarker-for-renal-dysfunction-during-long-term-adefovir-therapy-in-chronic-hepatitis-b
#12
Ziyue Li, Chuan Shen, Yadong Wang, Wei Wang, Qian Zhao, Zhenzhong Liu, Yang Wang, Caiyan Zhao
The aim of this study was to evaluate serum kidney injury molecule-1 (KIM-1) as a new diagnostic marker of renal dysfunction in chronic hepatitis B (CHB) patients receiving long-term adefovir dipivoxil (ADV) treatment.We retrospectively enrolled 85 patients treated with ADV and 85 patients treated with entecavir (ETV) monotherapy, for at least 6 months. The 2 groups were matched for baseline age (± 5 years), sex, and estimated glomerular filtration rate (eGFR). Serum creatinine, cystatin C, and KIM-1 concentrations were measured, and eGFR was calculated using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) creatinine-cystatin C equation, at baseline and last follow-up...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27858173/a-first-report-of-non-invasive-adenovirus-detection-in-wild-assamese-macaques-in-thailand
#13
Manakorn Sukmak, Worawidh Wajjwalku, Julia Ostner, Oliver Schülke
Several simian adenoviruses (AdVs) have been detected and isolated in various species of non-human primates with the goals of monitoring the health of wildlife and investigating their potential for zoonotic disease transmission. Here, we provide evidence of AdV infection in wild Assamese macaques (Macaca assamensis assamensis) at Phu Khieo Wildlife Sanctuary, Thailand, based on polymerase chain reaction of non-invasively collected fecal samples. Eight out of 110 fecal samples (7.3%), or five out of 87 monkeys (5...
November 17, 2016: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/27856696/the-neurospora-transcription-factor-adv-1-transduces-light-signals-and-temporal-information-to-control-rhythmic-expression-of-genes-involved-in-cell-fusion
#14
Rigzin Dekhang, Cheng Wu, Kristina M Smith, Teresa M Lamb, Matthew Peterson, Erin L Bredeweg, Oneida Ibarra, Jillian M Emerson, Nirmala Karunarathna, Anna Lyubetskaya, Elham Azizi, Jennifer M Hurely, Jay C Dunlap, James E Galagan, Michael Freitag, Matthew S Sachs, Deborah Bell-Pedersen
Light and the circadian clock have a profound effect on the biology of organisms through the regulation of large sets of genes. Towards understanding how light and the circadian clock regulate gene expression, we used genome-wide approaches to identify the direct and indirect targets of the light-responsive and clock-controlled transcription factor ADV-1 in Neurospora crassa A large proportion of ADV-1 targets were found to be light and/or clock-controlled, and enriched for genes involved in development, metabolism, cell growth, and cell fusion...
November 16, 2016: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/27852673/progress-in-quantitative-viral-load-testing-variability-and-impact-of-the-who-quantitative-international-standards
#15
R T Hayden, Y Sun, L Tang, G W Procop, D R Hillyard, B A Pinsky, S A Young, A M Caliendo
It has been hoped that recent availability of WHO quantitative standards would improve inter-laboratory agreement for viral load testing; however, insufficient data are available to evaluate whether this has been the case. Results from 554 laboratories participating in proficiency testing surveys for quantitative CMV, EBV, BKV, ADV and HHV6 PCR testing were evaluated to determine result variability overall, and then stratified by assay manufacturer. The impact of calibration to IU/mL (CMV and EBV) on variability was also determined...
November 16, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27845387/adenoviral-vectors-encoding-crispr-cas9-multiplexes-rescue-dystrophin-synthesis-in-unselected-populations-of-dmd-muscle-cells
#16
Ignazio Maggio, Jin Liu, Josephine M Janssen, Xiaoyu Chen, Manuel A F V Gonçalves
Mutations disrupting the reading frame of the ~2.4 Mb dystrophin-encoding DMD gene cause a fatal X-linked muscle-wasting disorder called Duchenne muscular dystrophy (DMD). Genome editing based on paired RNA-guided nucleases (RGNs) from CRISPR/Cas9 systems has been proposed for permanently repairing faulty DMD loci. However, such multiplexing strategies require the development and testing of delivery systems capable of introducing the various gene editing tools into target cells. Here, we investigated the suitability of adenoviral vectors (AdVs) for multiplexed DMD editing by packaging in single vector particles expression units encoding the Streptococcus pyogenes Cas9 nuclease and sequence-specific gRNA pairs...
November 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27836803/concurrent-anti-vascular-therapy-and-chemotherapy-in-solid-tumors-using-drug-loaded-acoustic-nanodroplet-vaporization
#17
Yi-Ju Ho, Chih-Kuang Yeh
: Drug-loaded nanodroplets (NDs) can be converted into gas bubbles through ultrasound (US) stimulation, termed acoustic droplet vaporization (ADV), which provides a potential strategy to simultaneously induce vascular disruption and release drugs for combined physical anti-vascular therapy and chemotherapy. Doxorubicin-loaded NDs (DOX-NDs) with a mean size of 214 nm containing 2.48 mg DOX/mL were used in this study. High-speed images displayed bubble formation and cell debris, demonstrating the reduction in cell viability after ADV...
November 8, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27834426/two-dimensional-binary-mixtures-of-patchy-particles-and-spherical-colloids
#18
Edyta Słyk, Wojciech Rżysko, Paweł Bryk
Using Monte Carlo simulation we study two dimensional mixtures of patchy and spherically symmetric particles. Such mixtures can be synthesized experimentally by covering colloids with appropriate types of DNA strands [L. Feng, et al., Adv. Mater., 2013, 25, 2779]. We focus on finding out the ordered structures that can be formed in such systems. The type of ordered phase strongly depends on the valency, size and binding energy of the patchy particles. If the patch size is small enough, i.e. it allows only one spherically symmetric particle to be bound, the ordered structure follows either a hexagonal or a tetragonal pattern depending on the valency of the patchy particles...
November 11, 2016: Soft Matter
https://www.readbyqxmd.com/read/27832435/using-adv-for-suspended-sediment-concentration-and-settling-velocity-measurements-in-large-shallow-lakes
#19
XiaoMeng Gao, Yiping Li, Chunyan Tang, Kumud Acharya, Wei Du, Jianwei Wang, Liancong Luo, Huiyun Li, Shujun Dai, Zhongbo Yu, Jalil Abdul, Wenfei Yu, Shuangshuang Zhang, Robert Bofah-Buoh, Mercy Jepkirui, Xuchuan Lu, Baozhu Pan
Sediment resuspension plays an important role to provide nutrient release for algal growth in large shallow lakes. The settling velocity (w s ) is the key parameter for understanding the suspended sediment transport. In this paper, acoustic Doppler velocimeter (ADV) and optical backscatter sensor (OBS) instruments were used to measure in situ velocities and suspended sediment concentration (SSC) simultaneously without affecting the ambient turbulence in the bottom layer of Lake Taihu. The results showed that (1) ADV echo intensity (EI) could be transferred into SSC successfully by using a simple logarithmic relationship with a strong correlation of 0...
November 10, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27822262/a-cost-utility-and-cost-effectiveness-analysis-of-different-oral-antiviral-medications-in-patients-with-hbeag-negative-chronic-hepatitis-b-in-iran-an-economic-microsimulation-decision-model
#20
Khosro Keshavarz, Abbas Kebriaeezadeh, Seyed Moayed Alavian, Ali Akbari Sari, Mohsen Rezaei Hemami, Farhad Lotfi, Amir Hashemi Meshkini, Mehdi Javanbakht, Maryam Keshvari, Shekoufeh Nikfar
BACKGROUND: Although hepatitis B infection is the major cause of chronic liver disease in Iran, no studies have employed economic evaluations of the medications used to treat Iranian patients with chronic hepatitis B (CHB). Therefore, the cost-effectiveness of the different treatment options for this disease in Iran is unknown. OBJECTIVES: The aim of this study was to compare the cost utility and cost-effectiveness of medication strategies tailored to local conditions in patients with HB e antigen (HBeAg)-negative CHB infection in Iran...
September 2016: Hepatitis Monthly
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