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P nuclear spin singlet lifetimes in a system with switchable magnetic inequivalence: experiment and simulation.

Phys Chem Chem Phys 2021 Sep 15;23(35):19465-19471. Epub 2021 Sep 15.

Department of Chemistry, New York University, New York, NY, USA.

P NMR spectroscopy and the study of nuclear spin singlet relaxation phenomena are of interest in particular due to the importance of phosphorus-containing compounds in physiology. We report the generation and measurement of relaxation of P singlet order in a chemically equivalent but magnetically inequivalent case. Nuclear magnetic resonance singlet state lifetimes of P pairs have heretofore not been reported. Read More

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September 2021

Temporal pulse quality of a Yb:YAG burst-mode laser post-compressed in a multi-pass cell.

Opt Lett 2021 Sep;46(18):4686-4689

Nonlinear pulse post-compression represents an efficient method for ultrashort, high-quality laser pulse production. The temporal pulse quality is, however, limited by amplitude and phase modulations intrinsic to post-compression. We here characterize in frequency and time domain with high dynamic range individual post-compressed pulses within laser bursts comprising 100-kHz-rate pulse trains. Read More

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September 2021

Conversion of LP modes to vortex modes in a gradually twisted highly birefringent optical fiber.

Opt Lett 2021 Sep;46(18):4446-4449

We experimentally demonstrate the possibility of quasi-adiabatic conversion of modes to vortex modes in a twisted highly birefringent fiber with a gradually increasing twist rate. Based on the value of the effective indices, the modes are selectively converted to right- and left-handed circularly polarized vortex modes with a total angular momentum of ±2 and to quasi-/ modes with a total angular momentum of 0. Since the proposed conversion method has a purely topological origin, it is broadband in nature, in contrast to the methods based on resonant effects. Read More

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September 2021

Efficient Conversion of Glycerol to Ethanol by an Engineered Strain.

Appl Environ Microbiol 2021 Sep 15:AEM0026821. Epub 2021 Sep 15.

Research Institute for Sustainable Humanosphere, Kyoto University, Japan.

Glycerol is an eco-friendly solvent that enhances plant biomass decomposition via glycerolysis in many pretreatment methods. Nonetheless, inefficient conversion of glycerol to ethanol by natural limits its use in these processes. Here, we have developed an efficient glycerol-converting yeast strain by genetically modifying the oxidation of cytosolic nicotinamide adenine dinucleotide (NADH) by an O-dependent dynamic shuttle and abolishing both glycerol phosphorylation and biosynthesis in D452-2 strain, as well as vigorous expression of whole genes in the DHA-pathway ( glycerol facilitator, glycerol dehydrogenase, endogenous dihydroxyacetone kinase, and triosephosphate isomerase). Read More

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September 2021

Medial closure supracondylar femoral osteotomy: an effective solution for long-term treatment of arthritic valgus knee?

J Orthop Traumatol 2021 Sep 15;22(1):35. Epub 2021 Sep 15.

ASST Centro Specialistico Ortopedico Traumatologico Gaetano Pini-CTO, Università Degli Studi Di Milano, P.zza A. Ferrari 1, 20122, Milan, Italy.

Purpose: The aim of this work was to retrospectively analyze the clinical, subjective, and radiological results of medial closing-wedge distal femur osteotomy (MCW-DFO) for the treatment of osteoarthritis (OA) in valgus knee at medium- to long-term follow-up.

Materials And Methods: A total of 57 patients (62 knees) treated with MCW-DFO between 1984 and 2018 were included in the study. Patient age at the time of the surgery ranged between 28 and 61 years (average: 48 years). Read More

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September 2021

Australian experience with robot-assisted Roux-en-Y gastric bypass with comparison to a conventional laparoscopic series.

Surg Endosc 2021 Sep 15. Epub 2021 Sep 15.

Department of General Surgery, Epworth Richmond, 89 Bridge Road, Richmond, VA, 3121, USA.

Background: Robotic surgery is a novel approach to abdominal surgery. In Australia, the uptake of robotic assistance for bariatric surgery has been relatively slow compared to many other countries. The aim of this study is to report the first high volume experience of robotic-assisted Roux-en-Y gastric bypass surgery in Australia (RRYGB) and compare outcomes with a similar laparoscopic group (LRYGB). Read More

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September 2021

Experimental and theoretical studies on glucose conversion in ethanol solution to 5-ethoxymethylfurfural and ethyl levulinate catalyzed by a Brønsted acid.

Phys Chem Chem Phys 2021 Sep 15;23(35):19729-19739. Epub 2021 Sep 15.

College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China.

The fundamental understanding of glucose conversion to 5-ethoxymethylfurfural (EMF) and ethyl levulinate (EL) (value-added chemicals from biomass) in ethanol solution catalyzed by a Brønsted acid is limited at present. Consequently, here, the reaction pathways and mechanism of glucose conversion to EMF and EL catalyzed by a Brønsted acid were studied, using an experimental method and quantum chemical calculations at the B3LYP/6-31G(D) and B2PLYPD3/Def2TZVP level under a polarized continuum model (PCM-SMD). By further verification through GC/MS tests, the mechanism and reaction pathways of glucose conversion in ethanol solution catalyzed by a Brønsted acid were revealed, showing that glucose is catalyzed by proton and ethanol, and ethanol plays a bridging role in the process of proton transfer. Read More

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September 2021

Totally laparoscopic right hemicolectomy with up-down approach. A single institution experience.

Ann Ital Chir 2021 ;92:365-371

Aim: Many laparoscopic techniques have been described for the treatment of right colon cancer. The purpose of this study is to communicate our experience in the totally laparoscopic treatment of right colon cancer and to report our short-term results in order to confirm the feasibility and safeness of this demanding procedure.

Material Of Study: From November 2017 to April 2020, we performed 384 surgical operations for colorectal cancers, of these 81 have involved tumors of the right colon in urgent and elective conditions. Read More

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January 2021

In-situ catalytic upgrading of bio-oil from rapid pyrolysis of biomass over hollow HZSM-5 with mesoporous shell.

Bioresour Technol 2021 Sep 2;341:125874. Epub 2021 Sep 2.

Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan; Energy Conversion Engineering Laboratory, Institute of Regional Innovation, Hirosaki University, 2-1-3, Matsubara, Aomori 030-0813, Japan. Electronic address:

To solve the issue of narrow micropores in traditional protonic type Zeolite Socony Mobil-5 (HZSM-5) catalysts in the restricting of large-molecular reactants/products diffusion, hollow HZSM-5 with a mesoporous shell was prepared using a hydrothermal method combined with a tetrapropylammonium hydroxide (TPAOH) treatment process. Applying for in-situ catalyst upgrading of bio-oil from rapid pyrolysis of biomass, the obtained most efficient catalyst of Hollow(30)-TP resulted in aromatic hydrocarbon yields in the range of 78.49-78. Read More

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September 2021

Metabolism perturbation Causedby the overexpression of carbon monoxide dehydrogenase/Acetyl-CoA synthase gene complex accelerated gas to acetate conversion rate ofEubacterium limosumKIST612.

Bioresour Technol 2021 Sep 4;341:125879. Epub 2021 Sep 4.

School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea. Electronic address:

Microbial conversion of carbon monoxide (CO) to acetate is a promising upcycling strategy for carbon sequestration. Herein, we demonstrate that CO conversion and acetate production rates of Eubacterium limosum KIST612 strain can be improved by in silico prediction and in vivo assessment. The mimicked CO metabolic model of KIST612 predicted that overexpressing the CO dehydrogenase (CODH) increases CO conversion and acetate production rates. Read More

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September 2021

Cobalt nanoparticle supported on layered double hydroxide: Effect of nanoparticle size on catalytic hydrogen production by NaBH hydrolysis.

Environ Pollut 2021 Aug 24;290:117990. Epub 2021 Aug 24.

Division of Applied Chemistry, Graduate School of Engineering, Sojo University, 4-22-1 Ikeda, Nishi-ku, Kumamoto, 860-0082, Japan.

Catalytic hydrolysis of sodium borohydride (NaBH) is a promising method to provide clean hydrogen (H) energy for portable devices. Therefore, designing a non-noble metal catalyst that performs well in this hydrolysis is essential. Cobalt-nanoparticles (Co-NPs) supported on magnesium-aluminium layered double hydroxide (LDH) with various mean diameter were synthesized by changing concentration of cobalt-citrate anion (Co-citrate) precursor used for ion exchange with the LDH host. Read More

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Column tests for evaluation of the enzymatic biodegradation capacity of hydrocarbons (C-C) contaminated soil.

Environ Pollut 2021 Aug 17;290:117986. Epub 2021 Aug 17.

TechnoRem Inc., 4701, rue Louis-B.-Mayer, Laval, Québec, H7P 6G5, Canada.

Though many studies pertaining to soil bioremediation have been performed to study the microbial kinetics in shake flasks, the process efficiency in column tests is seldom. In the present study, soil columns tests were carried out to study the biodegradation of soil contaminated with a high concentration of diesel (≈19.5 g/kg) petroleum hydrocarbons expressed as C-C. Read More

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Molten Salt Electrochemical Modulation of Iron-Carbon-Nitrogen for Lithium-Sulfur Batteries.

Angew Chem Int Ed Engl 2021 Sep 14. Epub 2021 Sep 14.

Wuhan University, College of Chemistry and Molecular Sciences, CHINA.

Sulfur hosts with rationally designed chemistry to confine and convert lithium polysulfides are of prime importance for high-performance lithium-sulfur batteries. A molten salt electrochemical modulation of iron-carbon-nitrogen is herein demonstrated as formation of hollow nitrogen-doped carbon with grafted Fe3C nanoparticles ([email protected]@Fe3C), which is rationalized as an excellent sulfur host for lithium-sulfur batteries. Fe3C over nitrogen-doped carbon contributes to enhanced adsorption and catalytic conversion of lithium polysulfides. Read More

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September 2021

Deep learning-augmented radioluminescence imaging for radiotherapy dose verification.

Med Phys 2021 Sep 15. Epub 2021 Sep 15.

Department of Radiation Oncology, Stanford University, Stanford, CA, 94305, USA.

Purpose: We developed a novel dose verification method using a camera-based radioluminescence imaging system (CRIS) combined with a deep learning-based signal processing technique.

Methods: The CRIS consists of a cylindrical chamber coated with scintillator material on the inner surface of the cylinder, coupled with a hemispherical mirror and a digital camera at the two ends. After training, the deep learning model is used for image-to-dose conversion to provide absolute dose prediction at multiple depths of a specific water phantom from a single CRIS image under the assumption of a good consistency between the TPS setting and actual beam energy. Read More

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September 2021

Non-thermal Resection Device for Ablation of Barrett's Esophagus - a Feasibility and Safety Study.

Endoscopy 2021 Sep 14. Epub 2021 Sep 14.

Gastroenterology and Hepatology, Erasmus MC, Rotterdam, Netherlands.

Background and study aims Several techniques exist for the eradication of Barrett's esophagus (BE); however, all have limitations regarding successful conversion to squamous epithelium and a complication profile. We aimed to assess the feasibility and safety of a new non-thermal device, the EndoRotor, for the eradication of BE as a first-line ablation technique. Patients and methods Patients with BE were prospectively included in 2 tertiary referral centers in The Netherlands. Read More

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September 2021

Towards sustainable biodiesel production by solar intensification of waste cooking oil and engine parameter assessment studies.

Sci Total Environ 2021 Sep 9;804:150236. Epub 2021 Sep 9.

Department of Mechanical Engineering, GMR Institute of Technology, Rajam, Srikakulam, Andhra Pradesh 532 127, India. Electronic address:

Renewable energy sources for harnessing biofuels are the viable solution to substitute fossil fuels and reduce production cost. In this study, waste cooking oil was converted into biodiesel via a customized solar reactor. The solar reactor was customized using copper tubes and black surface to trap solar energy for conversion of waste cooking oil into biodiesel. Read More

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September 2021

Research on the co-pyrolysis of coal gangue and coffee industry residue based on machine language: Interaction, kinetics, and thermodynamics.

Sci Total Environ 2021 Sep 9;804:150217. Epub 2021 Sep 9.

Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Jinzhai Road, Hefei 230026, China. Electronic address:

Co-pyrolysis technology of urban solid waste and biomass has broad application prospects in alleviating energy crisis and environmental pollution. In this study, thermogravimetric-Fourier transform infrared spectroscopy (TG-FTIR) was used to study the co-pyrolysis characteristics of coal gangue (CG) and coffee industry residue (CIR). CG and CIR were uniformly mixed according to the mass ratios of 1: 0, 7:3, 5:5, 3:7, and 0:1. Read More

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September 2021

Cross-Calibration of Bone Mineral Densities and Body Composition between GE Lunar Prodigy and Osteosys Primus.

J Bone Metab 2021 Aug 31;28(3):215-221. Epub 2021 Aug 31.

Department of Orthopaedic Surgery, Gyeongsang National University Hospital, Gyeongsang National University, Jinju, Korea.

Background: The aim of this study was to investigate the correlation between bone mineral density (BMD) and body composition measured by the Osteosys Primus® and the GE Lunar Prodigy® and to calculate the conversion rate between the 2 devices.

Methods: The 40 subjects were men and women in aged 20 to 29 years old. All participants were scanned twice on both the Osteosys Primus (OsteoSys) and the GE Lunar Prodigy (GE Healthcare) DXA systems using the manufacturers' standard scanning and positioning protocols. Read More

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Copper and Zirconium Codoped O3-Type Sodium Iron and Manganese Oxide as the Cobalt/Nickel-Free High-Capacity and Air-Stable Cathode for Sodium-Ion Batteries.

ACS Appl Mater Interfaces 2021 Sep 14. Epub 2021 Sep 14.

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China.

Considering the abundance of iron and manganese within the Earth's crust, the cathode O3-NaFeMnO has shown great potential for large-scale energy storage. Following the strategy of introducing specific heteroelements to optimize the structural stability for energy storage, the work has obtained an O3-type NaFeMnCuZrO that exhibits enhanced electrochemical performance and air stability. It displays an initial reversible capacity of 147. Read More

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September 2021

Efficient Polysulfide Trapping and Conversion on N-Doped CoTe via Enhanced Dual-Anchoring Effect.

Small 2021 Sep 14:e2102962. Epub 2021 Sep 14.

State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China.

Polysulfide shuttling and sluggish sulfur redox kinetics hinder the cyclability and rate capability of lithium-sulfur (Li-S) batteries. The intrinsic redox kinetics of sulfur cathodes strongly depends on the interaction between catalysts and sulfur species. Herein, N-doped CoTe is proposed as an effective dual-anchoring electrocatalyst, which can simultaneously bind Li and S atoms in lithium polysulfides via ionic Te-Li/N-Li bonding and coordinate covalent Co-S bonding. Read More

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September 2021

Immobilization of Sucrose Isomerase from Erwinia sp. with Graphene Oxide and Its Application in Synthesizing Isomaltulose.

Appl Biochem Biotechnol 2021 Sep 14. Epub 2021 Sep 14.

The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, China.

Sucrose isomerase (SIase) is a key enzyme used for the production of isomaltulose from sucrose. In this study, an SIase gene from Erwinia sp. Ejp617 (ErSIase) was heterologously expressed in Escherichia coli BL21(DE3), and the recombinant ErSIase was served as biocatalyst combined with the graphene oxide (GO) as carrier for ErSIase immobilization. Read More

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September 2021

High-Density Fat Grafting Assisted Stromal Vascular Fraction Gel in Facial Deformities.

J Craniofac Surg 2021 Sep 14. Epub 2021 Sep 14.

Department of Dermatology, Hospital of Weifang People Institute of Plastic Surgery, Weifang Medical University, Shandong, China.

Abstract: Autologous fat grafting is commonly used for soft tissue augmentation and reconstruction, this technique is limited by a high rate of graft absorption. The stromal vascular fraction gel (SVF-gel) grafting for facial volume augmentation can exert a positive effect on skin rejuvenation, but its major limitation is the low rate of conversion of Coleman fat. The purpose of our study was to investigate a novel surgery using performing high-density fat in combination with SVF-gel in the treatment of hemifacial atrophy, or Romberg diseases. Read More

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September 2021

Pediatric Weight Management Through mHealth Compared to Face-to-Face Care: Cost Analysis of a Randomized Control Trial.

JMIR Mhealth Uhealth 2021 Sep 14;9(9):e31621. Epub 2021 Sep 14.

Obesity Research and Care Group, Division of Population Health Sciences, School of Physiotherapy, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland.

Background: Mobile health (mHealth) may improve pediatric weight management capacity and the geographical reach of services, and overcome barriers to attending physical appointments using ubiquitous devices such as smartphones and tablets. This field remains an emerging research area with some evidence of its effectiveness; however, there is a scarcity of literature describing economic evaluations of mHealth interventions.

Objective: We aimed to assess the economic viability of using an mHealth approach as an alternative to standard multidisciplinary care by evaluating the direct costs incurred within treatment arms during a noninferiority randomized controlled trial (RCT). Read More

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September 2021

Revealing Ionic Signal Enhancement with Probe Grafting Density on the Outer Surface of Nanochannels.

Anal Chem 2021 Sep 14. Epub 2021 Sep 14.

State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China.

Probe-modified nanopores/nanochannels are one of the most advanced sensors because the probes interact strongly with ions and targets in nanoconfinement and create a sensitive and selective ionic signal. Recently, ionic signals have been demonstrated to be sensitive to the probe-target interaction on the outer surface of nanopores/nanochannels, which can offer more open space for target recognition and signal conversion than nanoconfined cavities. To enhance the ionic signal, we investigated the effect of grafting density, a critical parameter of the sensing interface, of the probe on the outer surface of nanochannels on the change rate of the ionic signal before and after target recognition (β). Read More

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September 2021

Imidazole substituted Zinc(II) phthalocyanines for co-catalyst-free photoelectrochemical and photocatalytic hydrogen evolution: influence of the anchoring group.

Chem Commun (Camb) 2021 Sep 14;57(73):9196-9199. Epub 2021 Sep 14.

Department of Natural and Mathematical Sciences, Faculty of Engineering, Tarsus University, 33480, Mersin, Turkey.

Novel zinc phthalocyanine derivatives, ZnPc-1 and ZnPc-2, consisting of one and four imidazole units, respectively, have been synthesized and utilized as panchromatic photosensitizers for photocatalytic and photoelectrochemical H evolution. The effect of the imidazole-anchoring group on the photocatalytic H production has been compared with ZnPc-3, which possesses a carboxylic acid unit as the anchoring group. ZnPc-1/TiO shows the best photoactivity with the highest H evolution rate of 0. Read More

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September 2021

Characterization of N-Terminal Glutamate Cyclization in Monoclonal Antibody and Bispecific Antibody Using Charge Heterogeneity Assays and Hydrophobic Interaction Chromatography.

J Pharm Sci 2021 Sep 10. Epub 2021 Sep 10.

Analytical Sciences, Biopharmaceutical Development, Biopharmaceuticals R&D, AstraZeneca, One Medimmune Way, Gaithersburg, MD 20878.

N-terminal glutamate (E) cyclization to form pyroglutamate (pE) generates charge heterogeneities for mAbs and proteins. Thus far, pE formation rate in lyophilized formulation as compared to in liquid formulation has not been reported. Impact of pE on antibody biological activity has only been predicted or assessed using stressed samples that may contain other confounding degradations besides pE. Read More

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September 2021

Photocatalytic oxidation of NO on reduction type semiconductor photocatalysts: effect of metallic Bi on CdS nanorods.

Chem Commun (Camb) 2021 Sep 13. Epub 2021 Sep 13.

Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, Hubei Province 430074, China.

We report the first visible light photocatalytic oxidation of NO on CdS nanorods (CdS-NRs), one of the typical reduction type semiconductor photocatalysts. The NO removal rate in a continuous reactor sharply increases from 44% to 58% after deposition of Bi nanoplates on CdS-NRs. The LSPR effect of metallic Bi causes the dramatic production of superoxide radicals (˙O) and singlet oxygen (O) that are responsible for the oxidation of NO. Read More

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September 2021

Improved Production of Xylanase in and Its Application in Xylose Production From Xylan.

Front Bioeng Biotechnol 2021 27;9:690702. Epub 2021 Aug 27.

State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China.

Xylanases with high specific activity has been focused with great interest as a useful enzyme in biomass utilization. The production of recombinant GH11 xylanase (MYCTH_56237) from has been improved through N-terminal signal peptide engineering in . The production of newly recombinant xylanase (termed Mtxyn11C) was improved from 442. Read More

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Seroprevalence of Cytomegalovirus and Associated Factors Among Preconception Women: A Cross-Sectional Nationwide Study in China.

Front Public Health 2021 25;9:631411. Epub 2021 Aug 25.

Women's Health and Perinatology Research Group, Department of Clinical Medicine, UiT - The Arctic University of Norway, Tromsø, Norway.

Cytomegalovirus seroconversion during pregnancy is common and has a substantial risk of congenital infection with longterm sequale. Screening during pregnancy or vaccination have not been shown to be effective for eliminating congenital infections. Preconception screening policy has not been evaluated adequately in a large scale. Read More

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September 2021

Overexpression of Phosphoribosyl Pyrophosphate Synthase Enhances Resistance of to Ionizing Radiation.

Front Plant Sci 2021 26;12:719846. Epub 2021 Aug 26.

Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, South Korea.

The enzyme phosphoribosyl pyrophosphate synthase (PRPS) catalyzes the conversion of ribose 5-phosphate into phosphoribosyl diphosphate; the latter is a precursor of purine and pyrimidine nucleotides. Here, we investigated the function of PRPS from the single-celled green alga in its response to DNA damage from gamma radiation or the alkylating agent LiCl. transcripts were upregulated in cells treated with these agents. Read More

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