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https://www.readbyqxmd.com/read/28734214/effects-of-damming-on-the-distribution-and-methylation-of-mercury-in-wujiang-river-southwest-china
#1
Lei Zhao, Yanna Guo, Bo Meng, Heng Yao, Xinbin Feng
Newly built reservoirs are regarded as sensitive ecosystem for mercury (Hg) methylation. A comprehensive study was conducted to understand the influence of damming on the distribution and methylation of Hg within a river-reservoir ecosystem in Wujiang River Basin (WRB), Southwest China. Hg species in inflow-outflow rivers of six cascade reservoirs were analyzed each month during 2006. Mean concentrations of total Hg (THg) and methylmercury (MeHg) in river water in WRB were 3.41 ± 1.98 ng L(-1) and 0.15 ± 0...
July 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28732434/effects-of-intraperitoneal-injection-of-allogeneic-bone-marrow-derived-mesenchymal-stem-cells-on-bronchiolitis-obliterans-in-mice-model
#2
Sakine Işık, Nevin Uzuner, Meral Karaman, Özkan Karaman, Müge Kıray, İlknur Kozanoğlu, Hüsnü Alper Bağrıyanık, Zeynep Arıkan-Ayyıldız, Melis Kartal Yandım, Yusuf Baran
Bone marrow-derived mesenchymal stem cells (BMSCs) can ameliorate a variety of lung diseases such as asthma, lung fibrosis, and acute lung injury by its anti-inflammatory and immunmodulatory effects. In this study, we developed a mouse model of bronchiolitis obliterans (BO) and evaluated the effects of the intraperitoneal administration of BMSCs on lung histopathology and cytokine levels. 25 BALB/c mice were divided into four groups; control group (Group I), BO developed and 1x106 BMSCs-injected group (Group II), non-BO, 1x106 BMSCs-injected group (Group III), and BO developed and saline-injected group (Group IV)...
June 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/28732407/a-synergistic-combination-of-nutrient-reclamation-from-manure-and-resultant-hydrochar-upgradation-by-acid-supported-hydrothermal-carbonization
#3
Lichun Dai, Bo Yang, Hong Li, Furong Tan, Nengmin Zhu, Qili Zhu, Mingxiong He, Yi Ran, Guoquan Hu
Cattle manure was hydrothermally carbonized in acid solutions (0-2% HCl), then nutrient concentration in liquid product and physicochemical properties of hydrochar were characterized to investigate the effects of acid addition on hydrochar properties and nutrient recovery from manure. Results showed that hydrothermal carbonization (HTC) in 2% HCl extracted almost 100% and 63.38% of phosphorus and nitrogen, respectively; specifically, >90% of the extracted phosphorus was PO4-P in liquid from HTC with acid addition, and increasing amount of extracted nitrogen was NH4-N with increasing acid addition...
July 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28732385/the-role-of-mirna-and-lncrna-in-gastric-cancer
#4
REVIEW
Ning-Bo Hao, Ya-Fei He, Xiao-Qin Li, Kai Wang, Rui-Ling Wang
Gastric cancer is one of the most common cancers and has the highest mortality rate worldwide. It is worthwhile to explore the mechanism of gastric cancer progression. An increasing number of studies have found that non-coding RNAs including miRNA and lncRNA play important roles in gastric cancer progression. This review summarized the role of ectopic miRNA in gastric cancer proliferation, growth, migration, invasion and apoptosis. Meantime, aberrantly expressed miRNA also received a great deal of attention as potential biomarker for gastric cancer diagnosis and therapy...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28732343/an-ultrasensitive-electrochemical-biosensor-for-polynucleotide-kinase-assay-based-on-gold-nanoparticle-mediated-lambda-exonuclease-cleavage-induced-signal-amplification
#5
Lin Cui, Yueying Li, Mengfei Lu, Bo Tang, Chun-Yang Zhang
Polynucleotide kinase (PNK) plays an essential role in cellular nucleic acid metabolism and the cellular response to DNA damage. However, conventional methods for PNK assay suffer from low sensitivity and involve multiple steps. Herein, we develop a simply electrochemical method for sensitive detection of PNK activity on the basis of Au nanoparticle (AuNP)-mediated lambda exonuclease cleavage-induced signal amplification. We use [Ru(NH3)6](3+) as the electrochemically active indicator and design two DNA strands (i...
July 13, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28732244/thyroglossal-duct-cysts-in-children-sonographic-features-every-radiologist-should-know-and-their-histopathological-correlation
#6
REVIEW
Emilio Inarejos Clemente, Modupe Oyewumi, Evan Probst, Bo-Yee Ngan, Mary-Louise Greer
Distinguishing between thyroglossal duct cysts (TGDC) and dermoid cysts (DC) sonographically can be challenging. We illustrate the three sonographic features in neck masses in children recently identified as being most suggestive of TGDC (septa, irregular wall and solid elements) and their corresponding histopathology. These three variables form a proposed predictive model for TGDC as a guide to surgical intervention. Pediatric radiologists should be familiar with these key imaging features, as compared with other imaging features described in TGDC also illustrated here, which are less discriminating...
July 12, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28732118/pd-1-checkpoint-blockade-in-combination-with-an-mtor-inhibitor-restrains-hepatocellular-carcinoma-growth-induced-by-hepatoma-cell-intrinsic-pd-1
#7
Hui Li, Xiaoqiang Li, Shuang Liu, Lei Guo, Bo Zhang, Jubo Zhang, Qinghai Ye
Inhibitors of PD-1 administered as single agents have resulted in durable tumor regression in advanced cancer patients. However, only a minority of cancer patients respond to anti PD-1 immunotherapy. Here, we show that PD-1 expression in hepatocellular carcinoma (HCC) promotes tumor growth independently of adaptive immunity. Knockdown of PD-1 suppress tumor growth, whereas PD-1 overexpression enhances tumorigenesis in immunodeficient xenografted mice. Mechanistically, PD-1 binds the downstream mTOR effectors eukaryotic initiation factor 4E (eIF4E) and ribosomal protein S6 (S6), thus promoting their phosphorylation...
July 21, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28732070/characterization-of-human-enterovirus71-virus-like-particles-used-for-vaccine-antigens
#8
Dandan Zhao, Bo Sun, Shiyang Sun, Bin Fu, Chuntian Liu, Dawei Liu, Yanfei Chu, Youlei Ma, Lu Bai, Yongge Wu, Yan Zhou, Weiheng Su, Ali Hou, Linjun Cai, Fei Xu, Wei Kong, Chunlai Jiang
Human enterovirus 71 (EV71) is a major causative pathogen of hand, foot and mouth disease (HFMD) and has caused outbreaks with significant mortality among young children in the Asia-Pacific region in recent years. Towards developing a vaccine for this disease, we have expressed and purified EV71 virus-like particles (VLPs), which resemble the authentic virus in appearance, capsid structure and protein sequence, from insect cells (Sf9) using a multistep chromatography process. We demonstrated intracellular localization of the VLPs in host cells by in situ immunogold detection, electron microscopy and immunofluorescence...
2017: PloS One
https://www.readbyqxmd.com/read/28732023/correction-a-chemical-genomic-screen-of-neglected-antibiotics-reveals-illicit-transport-of-kasugamycin-and-blasticidin-s
#9
Anthony L Shiver, Hendrik Osadnik, George Kritikos, Bo Li, Nevan Krogan, Athanasios Typas, Carol A Gross
[This corrects the article DOI: 10.1371/journal.pgen.1006124.].
July 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28731954/laparoscopic-pancreaticoduodenectomy-a-single-team-preliminary-experience
#10
Xiaohui Duan, Bo Jiang, Lixue Zhou, Jianhui Yang, Bingzhang Tian, Huiming Wen, Xianhai Mao
OBJECTIVE: The present study aimed to describe the authors' experience and the perioperative outcome for laparoscopic pancreaticoduodenectomy (LPD). MATERIALS AND METHODS: Perioperative clinical data of 57 consecutive pancreaticoduodenectomy (PD) procedures performed from January 2014 to May 2016 in the Department of Hepatobiliary Surgery, Hunan Provincial People's Hospital were retrospectively analyzed. RESULTS: The median of operative time was 315 minutes (range, 220 to 575 min) and the median of intraoperative estimated blood loss was 200 mL (range, 100 to 550 mL)...
July 20, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28731827/convergence-consilience-and-the-evolution-of-temperate-deciduous-forests
#11
Erika J Edwards, David S Chatelet, Bo-Chang Chen, Jin Yao Ong, Shuichiro Tagane, Hironobu Kanemitsu, Kazuki Tagawa, Kentaro Teramoto, Brian Park, Kuo-Fang Chung, Jer-Ming Hu, Tetsukazu Yahara, Michael J Donoghue
The deciduous habit of northern temperate trees and shrubs provides one of the most obvious examples of convergent evolution, but how did it evolve? Hypotheses based on the fossil record posit that deciduousness evolved first in response to drought or darkness and preadapted certain lineages as cold climates spread. An alternative is that evergreens first established in freezing environments and later evolved the deciduous habit. We monitored phenological patterns of 20 species of Viburnum spanning tropical, lucidophyllous (subtropical montane and warm temperate), and cool temperate Asian forests...
August 2017: American Naturalist
https://www.readbyqxmd.com/read/28731675/sustained-release-of-a-peptide-based-matrix-metalloproteinase-2-inhibitor-to-attenuate-adverse-cardiac-remodeling-and-improve-cardiac-function-following-myocardial-infarction
#12
Zhaobo Fan, Minghuan Fu, Zhaobin Xu, Bo Zhang, Zhihong Li, Haichang Li, Xinyu Zhou, Xuanyou Liu, Yunyan Duan, Pei-Hui Lin, Pu Duann, Xiaoyun Xie, Jianjie Ma, Zhenguo Liu, Jianjun Guan
Following myocardial infarction (MI), degradation of extracellular matrix (ECM) by upregulated matrix metalloproteinases (MMPs) especially MMP-2 decreases tissue mechanical properties, leading to cardiac function deterioration. Attenuation of cardiac ECM degradation at the early stage of MI has the potential to preserve tissue mechanical properties, resulting in cardiac function increase. Yet the strategy for efficiently preventing cardiac ECM degradation remains to be established. Current preclinical approaches have shown limited efficacy due to low drug dosage allocated to the heart tissue, dose-limiting side effects, and cardiac fibrosis...
July 21, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28731595/identification-of-carboxylesterase-genes-associated-with-pyrethroid-resistance-in-the-malaria-vector-anopheles-sinensis-diptera-culicidae
#13
Xue-Mei Wu, Bo-Ying Xu, Feng-Ling Si, Jianyong Li, Zhen-Tian Yan, Zheng-Wen Yan, Xiu He, Bin Chen
BACKGROUND: Carboxylesterases (CCEs) are one of three large detoxification enzyme families. Some CCEs are active on synthetic insecticides with ester structures. Anopheles sinensis is an important malaria vector in eastern Asia. This study identified and characterized the CCE genes in the An. sinensis genome and determined CCE genes associated with pyrethroid resistance using RNA-seq and RT-qPCR, in An. sinensis from Anhui, Chongqing, and Yunnan in China. RESULTS: Fifty-seven putative CCEs were identified and placed into 3 classes, 12 subfamilies and 14 clades through phylogenetics and homology analyses...
July 21, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28731533/improvement-of-d-lactic-acid-production-in-saccharomyces-cerevisiae-under-acidic-conditions-by-evolutionary-and-rational-metabolic-engineering
#14
Seung-Ho Baek, Eunice Y Kwon, Sang-Jeong Bae, Bo-Ram Cho, Seon-Young Kim, Ji-Sook Hahn
Microbial lactic acid (LA) production under acidic fermentation conditions is favorable to reduce the production cost, but circumventing LA toxicity is a major challenge. We generated D-LA-producing Saccharomyces cerevisiae strain JHY5610 by expressing D-lactate dehydrogenase gene (Lm. ldhA) from Leuconostoc mesenteroides, while deleting genes involved in ethanol production (ADH1, ADH2, ADH3, ADH4, and ADH5), glycerol production (GPD1 and GPD2), and degradation of D-LA (DLD1). Adaptive laboratory evolution of JHY5610 led to a strain JHY5710 having higher LA tolerance and D-LA-production capability...
July 21, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28731510/the-association-of-lower-urinary-tract-symptoms-with-incidental-falls-and-fear-of-falling-in-later-life-the-community-health-survey
#15
Kyu Shik Kim, Ji Won Nam, Bo Youl Choi, Hong Sang Moon
AIM: To evaluate the association between lower urinary tract symptoms (LUTS) and incidental falls and fear of falling. METHODS: We used data obtained from the 2011 Korean Community Health Survey (KCHS) conducted between August and October 2011 in South Korea. The survey was carried out to estimate patterns of disease prevalence and morbidity in men >40 years old. The trained interviewers performed face-to-face sociodemographic questionnaires using computer-assisted personal interviewing (CAPI) software, the International Prostate Symptom Score (IPSS), the Quality of Life score (EQ-5D), and a questionnaire about past falls and fear of falling...
July 21, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28731488/contamination-risk-of-synovial-biopsy-cultures-in-total-hip-arthroplasty-a-prospective-review-of-100-cases
#16
Christophe Pattyn, Thomas De Bo, Joris Anthonissen, Philippe Willekens, Geert Claeys, Emmanuel A Audenaert
INTRODUCTION: Cultures of deep synovial biopsies remain an important tool in diagnosing periprosthetic joint infection, a devastating complication following total hip arthroplasty (THA). Recent reports of unexpected positive intraoperative cultures in aseptic revision arthroplasty, however, challenge the validity and interpretation of these cultures. The aim of this study was to evaluate the contamination risk of synovial biopsy cultures collected intraoperatively during primary THA of healthy subjects...
July 19, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28731465/pr-set7-deficiency-limits-uterine-epithelial-population-growth-hampering-postnatal-gland-formation-in-mice
#17
Tongtong Cui, Bo He, Shuangbo Kong, Chan Zhou, Hangxiao Zhang, Zhangli Ni, Haili Bao, Jingtao Qiu, Qiliang Xin, Danny Reinberg, John P Lydon, Jinhua Lu, Haibin Wang
Formation of secretary endometrial glands in the uterus known as adenogenesis is a typical process of branching morphogenesis involving dynamic epithelial growth and differentiation. Unsuccessful adenogenesis often leads to female infertility. However, it remains largely unexplored so far regarding the epigenetic machinery governing normal endometrial gland formation. Here, we demonstrated that PR-Set7, an epigenetic regulator for H4K20me1 modification, was extensively expressed in the postnatal uteri, and its conditional deletion resulted in a complete lack of endometrial glands and infertility in mice...
July 21, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28731423/magnetic-properties-of-monoclinic-lanthanide-metaborates-i-ln-i-bo-sub-2-sub-sub-3-sub-i-ln-i-pr-nd-gd-tb
#18
Paromita Mukherjee, Emma Suard, S E Dutton
The bulk magnetic properties of the lanthanide metaborates, <i>Ln</i>(BO<sub>2</sub>)<sub>3</sub>, <i>Ln</i> = Pr, Nd, Gd, Tb are studied using magnetic susceptibility, heat capacity and isothermal magnetisation measurements. They crystallise in a monoclinic structure containing chains of magnetic <i>Ln</i><sup>3+</sup> and could therefore exhibit features of low-dimensional magnetism and frustration. Pr(BO<sub>2</sub>)<sub>3</sub> is found to have a non-magnetic singlet ground state...
July 21, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28731271/ultrasound-elastography-for-carpal-tunnel-pressure-measurement-a-cadaveric-validation-study
#19
Kazutoshi Kubo, Boran Zhou, Yu-Shiuan Cheng, Tai-Hua Yang, Bo Qiang, Kai-Nan An, Steven L Moran, Peter C Amadio, Xiaoming Zhang, Chunfeng Zhao
Carpal tunnel pressure is a key factor in the etiology of carpal tunnel syndrome. Numerous approaches have been conducted to measure carpal tunnel pressure. However, most techniques are invasive and take time and effort. We have developed an innovative approach to noninvasively assess the tunnel pressure by using the ultrasound surface wave elastography (USWE) technique. In a previous study it was shown that the shear wave speed in a tendon increased linearly with increasing tunnel pressure enclosed the tendon in a simple tendon model...
July 21, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28731226/curcumin-converts-foxp3-regulatory-t-cells-to-t-helper-1-cells-in-patients-with-lung-cancer
#20
JianYong Zou, ChunHua Su, HongHe Luo, YiYan Lei, Bo Zeng, HaoShuai Zhu, ZhenGuang Chen
The regulatory T cells (Treg) play an important role in the tumor tolerance. The methods to regulate the Treg population in cancer-bearing hosts are limited currently. The effect of curcumin on inhibiting cancer has been recognized, but the mechanism remains elusive. This study tests a hypothesis that administration of curcumin down regulates Tregs in lung cancer (LC) patients. In this study, a group of LC patients was treated with curcumin. The peripheral Tregs and T helper (Th) 1 cells were analyzed by flow cytometry...
July 21, 2017: Journal of Cellular Biochemistry
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